TWI734839B - film - Google Patents

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TWI734839B
TWI734839B TW106133340A TW106133340A TWI734839B TW I734839 B TWI734839 B TW I734839B TW 106133340 A TW106133340 A TW 106133340A TW 106133340 A TW106133340 A TW 106133340A TW I734839 B TWI734839 B TW I734839B
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film
less
weight
component
resin layer
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TW106133340A
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TW201827224A (en
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越智子
劉琛
矢野貴明
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日商住友化學股份有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Wrappers (AREA)

Abstract

一種薄膜，其係包含基材層與樹脂層者，且 　　係一表面層為基材層，另一表面層為包含樹脂組成物之樹脂層的薄膜， 　　將薄膜切出直徑1cm之圓形時，薄膜之基材層為外側，樹脂層為內側使薄膜彎曲時，沿著與對於彎曲之薄膜曲面，曲率成為零之直線成垂直之薄膜上之直線，切斷薄膜時， 　　樹脂層剖面中之亮部相的單位界面長為15.0μm-1 以上， 　　樹脂層剖面中之暗部相的單位界面長為12.5μm-1 以上， 　　將薄膜以溫度160℃、時間1秒、密封棒寬度10mm、壓力450kPa之條件，對於由熔點為157℃以上159℃以下且熔融流動速率為2.5g/10分鐘以上且4.0g/10分鐘以下之聚丙烯所成之厚度為400μm以上且500μm以下的被黏著體進行熱密封時之剝離能為60mJ以上，且 　　樹脂層厚度為5μm以上且100μm以下，薄膜厚度為20μm以上150μm以下。A film comprising a substrate layer and a resin layer, and one surface layer is a substrate layer, and the other surface layer is a resin layer containing a resin composition. When the film is cut into a circle with a diameter of 1 cm, The base layer of the film is on the outside, and the resin layer is on the inside. When the film is bent, it follows a straight line that is perpendicular to the curved surface of the film and the curvature becomes zero. When the film is cut, the resin layer is bright in the cross section. unit length of the interphase portion 15.0μm -1 or more, the dark portion of the resin layer per unit cross section of the interphase length 12.5μm -1 or more, at a film temperature 160 ℃, 1 second, a seal bar width of 10mm, a pressure of 450kPa Conditions: heat-sealing the adherend with a thickness of 400 μm or more and 500 μm or less made of polypropylene with a melting point of 157°C or more and 159°C or less and a melt flow rate of 2.5 g/10 min or more and 4.0 g/10 min or less The peeling energy at this time is 60mJ or more, the resin layer thickness is 5μm or more and 100μm or less, and the film thickness is 20μm or more and 150μm or less.

Description

薄膜film

本發明有關薄膜及包含該薄膜之蓋者。 The present invention relates to a film and a cover containing the film.

專利文獻1中記載藉由吹塑薄膜成形而成形之由含有乙烯-α-烯烴共聚物與乙烯-乙酸乙烯酯共聚物與黏著賦予劑之樹脂組成物所成之密封層的多層薄膜。 Patent Document 1 describes a multilayer film formed by blown film molding and formed by a sealing layer formed of a resin composition containing an ethylene-α-olefin copolymer, an ethylene-vinyl acetate copolymer, and an adhesive imparting agent.

[先前技術文獻] [Prior Technical Literature] [專利文獻] [Patent Literature]

[專利文獻1]日本特開平10-147672號公報 [Patent Document 1] Japanese Patent Laid-Open No. 10-147672

本發明在於提供抑制於吹塑薄膜成形時之熔融膜發泡及管狀薄膜之內面彼此之黏連，且透明性亦優異，具備熱密封至樹脂製被黏著體時之密封性及易開封性之易開封薄膜。 The present invention is to provide for suppressing the foaming of the molten film during the molding of the blown film and the adhesion between the inner surface of the tubular film, and the transparency is also excellent, and it has sealing properties and easy opening properties when heat-sealed to a resin adherend. The easy-opening film.

本發明提供下述[1]~[7]。 The present invention provides the following [1] to [7].

[1]一種薄膜，其係包含基材層與樹脂層者，且係一表面層為基材層，另一表面層為包含樹脂組成物之樹脂層的薄膜，將薄膜切出直徑1cm之圓形時，薄膜之基材層為外側，樹脂層為內側使薄膜彎曲時，沿著與對於彎曲之薄膜曲面，曲率成為零之直線成垂直之薄膜上之直線，切斷薄膜時，樹脂層剖面中之亮部相的單位界面長為15.0μm-1以上，樹脂層剖面中之暗部相的單位界面長為12.5μm-1以上，將薄膜以溫度160℃、時間1秒、密封棒寬度10mm、壓力450kPa之條件，對於由熔點為157℃以上159℃以下且熔融流動速率為2.5g/10分鐘以上且4.0g/10分鐘以下之聚丙烯所成之厚度為400μm以上且500μm以下的被黏著體進行熱密封時之剝離能為60mJ以上，且樹脂層厚度為5μm以上且100μm以下，薄膜厚度為20μm以上150μm以下。 [1] A film comprising a substrate layer and a resin layer, one surface layer is a substrate layer, and the other surface layer is a resin layer containing a resin composition. The film is cut into a circle with a diameter of 1 cm When the film is shaped, the base layer of the film is on the outside, and the resin layer is on the inside. When the film is bent, follow a straight line perpendicular to the curved surface of the film and the straight line where the curvature becomes zero. When the film is cut, the resin layer is cross-sectioned. The unit interface length of the bright part phase is 15.0μm -1 or more, and the unit interface length of the dark part phase in the resin layer section is 12.5μm -1 or more. Under the condition of pressure of 450kPa, for the adherend with a thickness of 400μm or more and 500μm or less made of polypropylene with a melting point of 157°C or more and 159°C or less and a melt flow rate of 2.5g/10 minutes or more and 4.0g/10 minutes or less The peeling energy during heat sealing is 60 mJ or more, the resin layer thickness is 5 μm or more and 100 μm or less, and the film thickness is 20 μm or more and 150 μm or less.

[2]一種易開封薄膜用樹脂組成物，其含有下述成分(a)、下述成分(b)及下述成分(c)之樹脂組成物，相對於成分(a)與成分(b)之合計量100重量%，樹脂組成物中之全部聚合物含有之基於不飽和酯的單體單位含量為11重量%以上18重量%以下，成分(a)：由下述成分(a-1)及下述成分(a-2)所成之群選擇之至少一種乙烯-α-烯烴共聚物 　　成分(a-1)：含有基於乙烯之單體單位及選自碳數4~20之α-烯烴之至少一種的基於α-烯烴之單體單位，流動之活性化能為10kJ/mol以上且未達50kJ/mol，分子量分佈為2~5的乙烯-α-烯烴共聚物 　　成分(a-2)：含有基於乙烯之單體單位及選自碳數4~20之α-烯烴之至少一種的基於α-烯烴之單體單位，流動之活性化能為50kJ/mol以上90kJ/mol以下，分子量分佈為5~15的乙烯-α-烯烴共聚物 　　成分(b)：含有基於乙烯之單體單位及基於不飽和酯之單體單位之乙烯-不飽和酯共聚物， 　　成分(c)：平均折射率為1.48以上1.55以下，且體積基準之粒度分佈之累計分率中之50%徑(D50)為6μm以上15μm以下，且由下述式(1)求出之重量變化率未達5重量%之微粒子， 　　E=((G-F)/F)×100 (1) 　　(式(1)中，F係將該微粒子於未達0.03MPa之減壓下，於溫度110℃，乾燥至每1小時之重量減少率成為0.1重量%以下後之微粒子重量(g)，G係進行前述F之測定之微粒子在常壓下、相對濕度75%及溫度40℃保持24小時後之微粒子重量(g))。 　　[3] 如[2]之易開封薄膜用樹脂組成物，其中成分(c)係自甲基丙烯酸甲酯聚合物微粒子、鋁酸矽酸鈉鈣微粒子、鋁酸矽酸鈉微粒子、燒成高嶺土微粒子、燒成矽藻土微粒子及燒成氧化矽微粒子所成之群中選擇之至少一種微粒子。 　　[4] 一種薄膜，其包含如[2]或[3]之樹脂組成物。 　　[5] 一種薄膜，其係包含含有如[2]或[3]之樹脂組成物之層與含有乙烯系聚合物之層的薄膜， 　　薄膜具有之2層表面層中，至少一表面層係含有如[2]或[3]之樹脂組成物之層。 　　[6] 一種薄膜，其係包含含有如[2]或[3]之樹脂組成物之層與不含乙烯系聚合物之層的薄膜， 　　薄膜具有之2層表面層中，至少一表面層係含有如[2]或[3]之樹脂組成物之層。 　　[7] 一種蓋，其包含如[1]及[4]~[6]中任一項之薄膜。 [2] A resin composition for easy-opening films, which contains the following component (a), the following component (b), and the following component (c), relative to the component (a) and the component (b) The total amount is 100% by weight, and the content of monomer units based on unsaturated esters contained in all polymers in the resin composition is 11% by weight or more and 18% by weight or less. Component (a): consists of the following components (a-1) And at least one ethylene-α-olefin copolymer component (a-1) selected from the group consisting of the following component (a-2): containing monomer units based on ethylene and α-olefins with 4 to 20 carbon atoms At least one monomer unit based on α-olefin, flow activation energy of 10kJ/mol or more and less than 50kJ/mol, and molecular weight distribution of ethylene-α-olefin copolymer component (a-2) : Contains monomer units based on ethylene and at least one α-olefin based monomer unit selected from α-olefins with 4 to 20 carbon atoms. The flow activation energy is 50kJ/mol or more and 90kJ/mol or less, molecular weight distribution 5-15 ethylene-α-olefin copolymer component (b): ethylene-unsaturated ester copolymer containing ethylene-based monomer units and unsaturated ester-based monomer units, 　　component (c): average refractive index It is 1.48 or more and 1.55 or less, and the 50% diameter (D50) of the cumulative fraction of the volume-based particle size distribution is 6 μm or more and 15 μm or less, and the weight change rate calculated by the following formula (1) is less than 5 wt% Microparticles, 　　E=((GF)/F)×100 (1) 　　(In formula (1), F means that the microparticles are dried under a reduced pressure of less than 0.03MPa at a temperature of 110°C to a weight per hour The weight (g) of the particles after the reduction rate becomes 0.1% by weight or less. G is the weight (g) of the particles measured by the above F under normal pressure, 75% relative humidity and 40°C for 24 hours). [3] The resin composition for easy-opening films as in [2], in which component (c) is selected from methyl methacrylate polymer microparticles, sodium calcium aluminate silicate microparticles, sodium aluminate silicate microparticles, and fired kaolin At least one kind of fine particles selected from the group consisting of fine particles, fine particles of fired diatomaceous earth, and fine particles of fired silica.　　[4] A film comprising a resin composition such as [2] or [3]. [5] A film comprising a layer containing a resin composition such as [2] or [3] and a layer containing an ethylene-based polymer. Among the two surface layers of the 　　 film, at least one of the surface layers contains Such as [2] or [3] of the resin composition layer. [6] A film comprising a layer containing a resin composition such as [2] or [3] and a layer not containing an ethylene-based polymer. Among the two surface layers of the 　　 film, at least one surface layer is A layer containing a resin composition such as [2] or [3].　　[7] A cover comprising a film as in any one of [1] and [4]~[6].

依據本發明，可提供抑制於吹塑薄膜成形時之熔融膜發泡及管狀薄膜之內面彼此之黏連，且透明性亦優異，具備將該樹組成物所成之薄片層熱密封至各種被黏著體時之密封性及易開封性之易剝離薄膜。According to the present invention, it is possible to provide suppression of the foaming of the molten film and the adhesion of the inner surface of the tubular film during blown film forming, and the transparency is also excellent. An easy-to-peel film with sealing and easy-opening properties when being adhered.

[0007] 以下，針對本發明一實施形態詳細說明。 　　本發明之薄膜係包含基材層與樹脂層之薄膜。本發明之薄膜係易開封薄膜(以下有時記載為易剝離薄膜)。 　　將該薄膜切出直徑1cm之圓形時，以基材層為外側，樹脂層為內側使薄膜彎曲時，沿著與對於該曲面，曲率成為零之直線成垂直之薄膜上之直線，切斷薄膜時，樹脂層剖面中之亮部相的單位界面長為15.0μm-1以上，樹脂層剖面中之暗部相的單位界面長為12.5μm-1以上，將前述薄膜以溫度160℃、時間1秒、密封棒寬度10mm、壓力450kPa之條件，對於由熔點為157℃以上159℃以下且於溫度230℃及荷重21.18N下之熔融流動速率為2.5g/10分鐘以上且4.0g/10分鐘以下之聚丙烯所成之厚度為400μm以上且500μm以下的被黏著體進行密封時之剝離能為60mJ以上，且前述樹脂層厚度為5μm以上且100μm以下，前述薄膜合計厚度為20μm以上150μm以下。 [0007] Hereinafter, an embodiment of the present invention will be described in detail. The film of the present invention is a film including a substrate layer and a resin layer. The film of the present invention is an easy-opening film (hereinafter sometimes referred to as an easy-release film). When cutting the film into a circle with a diameter of 1 cm, use the base layer as the outer side and the resin layer as the inner side to bend the film, and cut along the line perpendicular to the straight line where the curvature becomes zero for the curved surface. When filming, the unit interface length of the bright phase in the cross section of the resin layer is 15.0 μm -1 or more, and the unit interface length of the dark phase in the resin layer cross section is 12.5 μm -1 or more. Second, the sealing rod width is 10mm, and the pressure is 450kPa. For the melt flow rate from a melting point of 157°C to 159°C, a temperature of 230°C and a load of 21.18N, a melt flow rate of 2.5g/10 minutes or more and 4.0g/10 minutes or less When an adherend with a thickness of 400 μm or more and 500 μm or less is sealed with polypropylene, the peeling energy is 60 mJ or more, the thickness of the resin layer is 5 μm or more and 100 μm or less, and the total thickness of the film is 20 μm or more and 150 μm or less.

一般，基材層與樹脂層層合而成之薄膜，以基材層為外側，樹脂層為內側彎曲時，對於該薄膜之曲面曲率成為零之直線與TD方向(transverse direction，橫斷方向)平行，與TD方向垂直之該層合薄膜上之直線與MD方向(machine direction，薄膜擠出方向)平行。 Generally, a film formed by laminating a substrate layer and a resin layer has the substrate layer as the outer side and the resin layer is bent on the inner side, the straight line and the TD direction (transverse direction) where the curvature of the curved surface of the film becomes zero. Parallel, the straight line on the laminated film perpendicular to the TD direction is parallel to the MD direction (machine direction, film extrusion direction).

該彎曲係於藉由吹塑薄膜成形之具有殘留應變之樹脂薄膜，與基材層層合後，因該應變之緩和而使樹脂薄膜收縮所產生。 The bending is caused by a resin film with residual strain formed by a blown film, and after being laminated with a base material layer, the resin film shrinks due to the relaxation of the strain.

樹脂層剖面中之亮部相的單位界面長及暗部相的單位界面長係藉由以下方法算出。使用四氧化釕(RuO4)對薄膜之樹脂層進行染色。經染色之樹脂層剖面以透過型電子顯微鏡(TEM)測定，獲得TEM圖像。所得圖像之臨限值為130以上之部分成為白色，臨限值未達130之部 分成為黑色進行二值化處理。二值化處理後之圖像中，白色部分成為亮部相，黑色部分成為暗部相。二值化處理後之圖像中，圖像中之全部亮部相之周圍長的和除以圖像全體之面積的和所得之值設為亮部相的單位界面長，圖像中之全部暗部相之周圍長的和除以圖像全體之面積的和所得之值設為暗部相的單位界面長。 The unit interface length of the light part phase and the unit interface length of the dark part phase in the cross section of the resin layer are calculated by the following method. Use ruthenium tetroxide (RuO 4 ) to dye the resin layer of the film. The cross section of the dyed resin layer was measured with a transmission electron microscope (TEM) to obtain a TEM image. The portion of the obtained image whose threshold value is 130 or more becomes white, and the portion whose threshold value is less than 130 becomes black and undergoes binarization processing. In the image after the binarization process, the white part becomes the bright part phase, and the black part becomes the dark part phase. In the image after the binarization process, the sum of the surrounding lengths of all the bright parts in the image divided by the sum of the area of the entire image is set as the unit interface length of the bright parts, all of the image The value obtained by dividing the sum of the surrounding length of the dark phase by the sum of the entire area of the image is set as the unit interface length of the dark phase.

亮部相的單位界面長為15.0μm-1以上，較好為17.0μm-1以上，更好為20.0μm-1以上，較好為35.0μm-1以下，更好為33.0μm-1以下，又更好為30.0μm-1以下。作為亮部相的單位界面長較好為15.0μm-1以上35.0μm-1以下，更好為17.0μm-1以上33.0μm-1以下，又更好為20.0μm-1以上30.0μm-1以下。亮部相的單位界面長未達15.0μm-1時，熱密封時之薄膜密封性變低。 Phase bright portion interface unit length 15.0μm -1 or more, preferably 17.0μm -1 or more, more preferably 20.0μm -1 or more, preferably 35.0μm -1 or less, more preferably 33.0μm -1 or less, It is more preferably 30.0 μm -1 or less. As the interface unit is preferably long phase bright portion is more than 15.0 m -1 -1 35.0, more preferably 17.0 or more 33.0μm -1 -1 or less, and more preferably more than 20.0 m -1 -1 30.0μm . When the unit interface length of the bright phase is less than 15.0 μm -1 , the film sealing performance at the time of heat sealing becomes low.

作為暗部相的單位界面長為12.5μm-1以上，較好為13.0μm-1以上，較好為35.0μm-1以下，更好為33.0μm-1以下，又更好為30.0μm-1以下。作為暗部相的單位界面長較好為12.5μm-1以上35.0μm-1以下，更好為13.0μm-1以上33.0μm-1以下，又更好為13.3μm-1以上30.0μm-1以下。暗部相的單位界面長未達12.5μm-1時，透明性易降低，容易引起管狀薄膜之內面彼此之黏連。 As a dark portion with an interface unit length 12.5μm -1 or more, more preferably 13.0μm -1, preferably 35.0μm -1 or less, more preferably 33.0μm -1 or less, and more preferably less 30.0μm -1 . As dark portion of phase interface unit length is preferably 12.5μm -1 35.0μm -1 or more, more preferably at least 33.0μm -1 13.0μm -1 or less, and more preferably 13.3μm -1 less than 30.0μm -1. When the unit interface length of the dark phase is less than 12.5μm -1 , the transparency is likely to decrease, and it is easy to cause the inner surfaces of the tubular film to stick to each other.

將薄膜密封於被黏著體時之剝離能，係以作用於剝離點之應力與剝離距離的乘積而算出之值，已知該值越高密封性越高。樹脂薄膜之製膜時於樹脂薄膜產生發泡時，或樹脂薄膜之表面凹凸較大時，由於會損及樹脂薄膜表面之平滑性，故阻礙薄膜對被黏著體之密著，作用於剝離點之應力成為不均一性，剝離能變低。The peeling energy when the film is sealed to the adherend is a value calculated by the product of the stress acting on the peeling point and the peeling distance. It is known that the higher the value, the higher the sealing performance. When the resin film is formed when the resin film is foamed or the surface of the resin film is large, the smoothness of the resin film surface will be impaired, and the film will be prevented from adhering to the adherend and act on the peeling point. The stress becomes non-uniform, and the peeling energy becomes lower.

[0014] 本發明之易剝離薄膜以溫度160℃、時間1秒、密封棒寬度10mm、壓力450kPa之條件，對於由熔點為157℃以上159℃以下且於溫度230℃及荷重21.18N下之熔融流動速率為2.5g/10分鐘以上且4.0g/10分鐘以下之聚丙烯所成之厚度為400μm以上且500μm以下的被黏著體進行密封時之剝離能為60mJ以上，較好為80mJ以上，更好為100mJ以上，又更好為120mJ以上。剝離能未達60mJ時，吹塑薄膜成形時易引起熔融膜發泡。 　　且，基於易開封性之觀點，剝離能若過高則欠佳。基於易開封性之觀點，本發明之易剝離薄膜之前述剝離能較好為300mJ以下，更好為280mJ以下，又更好為250mJ以下。 　　本發明之易剝離薄膜之前述剝離能較好為60mJ以上300mJ以下，更好為80mJ以上280mJ以下，又更好為120mJ以上250mJ以下。 　　[0015] 薄膜厚度為20μm以上150μm以下，較好為25μm以上120μm以下，更好為30μm以上100μm以下。薄膜厚度係使用低溫切片機(Cryomicrotome)於薄膜厚度方向薄切，以光學顯微鏡觀察所得試驗片之剖面而測定。 　　[0016] (樹脂層) 　　樹脂層剖面中之亮部相係藉由例如相對於聚合物(I)中之單體單位的合計重量100重量%，含有極性基之單體單位含量為1重量%以下的聚合物(I)所形成。樹脂層剖面中之暗部相係藉由例如相對於聚合物(II)中之單體單位的合計重量100重量%，含有極性基之單體單位含量為5重量%以上的包含源自含有極性基之單體的單體單位的聚合物(II)所形成。 　　相對於聚合物(I)中之單體單位的合計重量100重量%，聚合物(I)之含有極性基之單體單位含量為1重量%以下，較好為0.5重量%以下，更好為0.1重量%以下。 　　相對於聚合物(II)中之單體單位的合計重量100重量%，聚合物(II)之含有極性基之單體含量為5重量%以上，較好為7重量%以上，更好為9重量%以上。 　　作為聚合物(I)舉例為例如乙烯均聚物、乙烯-α-烯烴共聚物、丙烯均聚物、丙烯-α-烯烴共聚物。作為聚合物(II)，舉例為例如乙烯-不飽和酯共聚物、乙烯-乙烯醇共聚物、乙烯-不飽和酯-乙烯醇共聚物。 　　[0017] 本發明之薄膜之樹脂層含有例如以下樹脂組成物。 　　樹脂組成物含有乙烯-α-烯烴共聚物(以下有時記載為成分(a))、乙烯-不飽和酯共聚物(以下有時記載為成分(b))、及平均折射率為1.48以上1.55以下，體積基準的粒度分佈之累積分率中之50%徑(D50)為6μm以上15μm以下，且由下述式(1)求出之重量變化率未達5重量%之微粒子(以下有實際記載為成分(c))。相對於樹脂組成物中所含之樹脂成分的總重量100重量%，成分(a)與成分(b)之含量合計較好為70重量%以上，更好為80重量%以上，又更好為90重量%以上，特佳為95重量%以上。 　　[0018] (乙烯-α-烯烴共聚物(成分(a)) 　　樹脂組成物所含之成分(a)係選自下述所成之群中之至少一種乙烯-α-烯烴共聚物， 　　含有基於乙烯之單體單位及選自碳原子數4~20之α-烯烴之至少一種的基於α-烯烴之單體單位，流動之活性化能為10kJ/mol以上且未達50kJ/mol，分子量分佈為2~5的乙烯-α-烯烴共聚物(以下有時記載為成分(a-1))及 　　含有基於乙烯之單體單位及選自碳原子數4~20之α-烯烴之至少一種的基於α-烯烴之單體單位，流動之活性化能為50kJ/mol以上90kJ/mol以下，分子量分佈為5~15的乙烯-α-烯烴共聚物(以下有時記載為成分(a-2))。 　　前述樹脂組成物可僅含有成分(a-1)作為成分(a)，亦可僅含有成分(a-2)，亦可含有成分(a-1)及成分(a-2)兩者。 　　[0019] 成分(a-1)係含有基於乙烯之單體單位及選自碳原子數4~20之α-烯烴之至少一種的基於α-烯烴之單體單位，流動之活性化能為10kJ/mol以上且未達50kJ/mol，分子量分佈為2~5的乙烯-α-烯烴共聚物。前述樹脂組成物可僅含1種成分(a-1)，亦可含2種以上。 　　成分(a-1)可僅含1種基於α-烯烴之單體單位，亦可含2種以上。成分(a-1)亦可含有基於乙烯、α-烯烴及不飽和酯以外之其他單體之單體單位。 　　作為α-烯烴舉例為例如1-丁烯、1-戊烯、1-己烯、3-甲基-1-丁烯、3,3-二甲基-1-丁烯、4-甲基-1-戊烯、1-辛烯。α-烯烴較好為碳原子數4~8之α-烯烴，基於取得容易性，更好為1-丁烯、1-己烯、4-甲基-1-戊烯、1-辛烯。 　　作為成分(a-1)舉例為例如乙烯-1-丁烯共聚物、乙烯-1-己烯共聚物、乙烯-4-甲基-1-戊烯共聚物、乙烯-1-辛烯共聚物、乙烯-1-丁烯-1-己烯共聚物、乙烯-1-丁烯-4-甲基-1-戊烯共聚物、乙烯-1-丁烯-1-辛烯共聚物、乙烯-1-己烯-1-辛烯共聚物，較好為乙烯-1-己烯共聚物、乙烯-4-甲基-1-戊烯共聚物、乙烯-1-辛烯共聚物、乙烯-1-丁烯-1-己烯共聚物。 　　[0020] 成分(a-1)之流動之活性化能(以下有時記載為「Ea」)為10kJ/mol以上且未達50kJ/mol，較好為20kJ/mol以上且未達40kJ/mol，更好為為30kJ/mol以上且未達40kJ/mol。 　　該流動之活性化能，於製造方法中，例如可藉由提高聚合溫度而增大。 　　[0021] 流動之活性化能(Ea)係基於溫度-時間重疊原理，自作成顯示於190℃之熔融複黏度(單位：Pa‧sec)的角頻率(單位：rad/sec)依存性之主曲線時之位移因子(aT )藉由阿倫尼烏斯(Arrhenius)方程式算出之值。Ea係藉由以下方法求出之值。將130℃、150℃、170℃及190℃之各溫度(T，單位：℃)中之乙烯-α-烯烴共聚物之熔融複黏度-角頻率曲線，基於溫度-時間重疊原理，求出於各溫度(T)之熔融複黏度-角頻率曲線與190℃之乙烯系共聚物之熔融複黏度-角頻率曲線重疊時所得之各溫度(T)下的位移因子(aT )。由各溫度(T)及各溫度(T)下之位移因子(aT )，藉由最小自乘法算出[In(aT )]與[1/(T+273.16)]之一次近似式(下述(I)式)，由一次近似式的斜率m與下述式(II)，求出Ea。

Figure 02_image001
aT ：位移因子 　　　Ea：流動之活性化能(單位：kJ/mol) 　　　T：溫度(單位：℃) 　　上述計算亦可使用市售的計算軟體。作為該計算軟體舉例為例如Rheometrics公司製Rhios V.4.4.4等。 　　又，位移因子(aT )係各溫度(T)下之熔融複黏度-角頻率之兩對數曲線於log(Y)=-log(X)軸方向移動(但Y軸為熔融複黏度，X軸為角頻率)，與190℃之熔融複黏度-角頻率曲線重疊時之移動量。該重疊中，各溫度(T)下之熔融複黏度-角頻率之兩對數曲線，於每各曲線，角頻率以aT 倍，熔融複黏度以1/aT 倍移動。且自130℃、150℃、170℃及190℃之4點的值以最小自乘法求出(I)式時之相關係數通常為0.99以上。 　　[0022] 熔融複黏度-角頻率曲線之測定係使用黏彈性測定裝置(例如Rheometrics公司製Rheometrics Mechanical Spectrometer RMS-800等)，通常以幾何學：平行板，板直徑：25mm，板間隔：1.5~2mm，應力：5%，角頻率：0.1~100rad/秒之條件進行。又，測定係在氮氣環境下進行。測定試料中較好預先適量摻合抗氧化劑(例如1000ppm)。 　　[0023] 成分(a-1)之分子量分佈為2~5。分子量分佈係重量平均分子量(Mw)對於數平均分子量(Mn)之比。數平均分子量(Mn)及重量平均分子量(Mw)係藉由凝膠滲透層析(GPC)法求得。GPC測定係於下述條件下進行。基於ISO16014-1之記載，規定層析圖上之基準線。 (測定條件) 　　裝置：HLC-8121GPC/HT(TOSOH股份有限公司製) 　　GPC管柱：TOSOH TSKgel GMH6-HT，7.8mm I.D. ×300mm (TOSOH股份有限公司製) 3根 　　移動相：於鄰二氯苯(和光純藥工業股份有限公司，特級)中添加0.1重量/體積BHT而使用 　　流速：1mL/分鐘 　　管柱烘箱溫度：140℃ 　　檢測：示差折射率檢測器(RID) 　　RID cell溫度：140℃ 　　試料溶液注入量：300μL 　　試料溶液濃度：1mg/mL 　　GPC管柱校正用標準物質：TOSOH製標準聚苯乙烯分別以下表之重量於室溫溶解於5mL鄰二氯苯(與移動相相同組成)而調製。
Figure 02_image003
[0024] 以荷重21.18N、溫度190℃之條件藉由JIS K 7210-1995規定之A法測定之成分(a-1)之熔融流動速率(MFR)較好為0.1~30g/10分鐘，更好為0.2~20g/10分鐘，又更好為0.3~10g/10分鐘。 　　[0025] 依據JIS K7112-1980中之A法規定之方法測定之成分(a-1)之密度較好為850~940kg/m3 ，更好為880~ 930kg/m3 ，又更好為915~925 kg/m3 。 　　[0026] 依據ASTM D1822-68測定之成分(a-1)之拉伸衝擊強度，若成分(a-1)之密度為850kg/m3 以上且未達910kg/m3 ，則較好為2500kJ/m2 以上且未達3500kJ/m2 ，若成分(a-1)之密度為910kg/m3 以上且未達920 kg/m3 ，則較好為1800kJ/m2 以上且未達3000kJ/m2 ，若成分(a-1)之密度為920kg/m3 以上且未達930kg/m3 ，則較好為1500kJ/m2 以上且未達2000kJ/m2 ，若成分(a-1)之密度為930kg/m3 以上且未達940kg/m3 ，則較好為1000kJ/m2 以上且未達1500kJ/m2 。 　　[0027] 作為成分(a-1)之聚合方法舉例為例如塊狀聚合、溶液聚合、漿料聚合、氣相聚合或高壓離子聚合法。所謂塊狀聚合係於聚合溫度下以液狀烯烴作為介質進行聚合之方法。所謂溶液聚合或漿料聚合係於丙烷、丁烷、異丁烷、戊烷、己烷、庚烷、辛烷等之惰性烴溶劑中進行聚合之方法。且所謂氣相聚合係以氣體狀態之單體作為介質，於該介質中使氣體狀態之單體聚合之方法。該等聚合方法可為批式或連續式之任一者，且可為以單一聚合槽進行之單段式或以複數聚合反應槽串聯連接之聚合裝置進行之多段式之任一者均可。又，聚合步驟中之聚合溫度、聚合壓力、單體濃度、觸媒投入量、聚合時間等之各種條件只要適當決定即可。 　　[0028] 作為成分(a-1)之製造所用之觸媒舉例為單部位觸媒。作為單部位觸媒較好為茂金屬觸媒。 　　[0029] 作為茂金屬觸媒，舉例為例如如下之(1)~(4)的觸媒等。 　　(1)由含有具有環戊二烯型骨架之基的過渡金屬化合物的成分與含有鋁氧烷化合物之成分所成之觸媒 　　(2)由含有前述過渡金屬化合物之成分與含有三苯基甲基硼酸酯、苯銨硼酸酯等之離子性化合物的成分所成之觸媒 　　(3)由含有前述過渡金屬化合物之成分、含有前述離子性化合物之成分與含有有機鋁化合物所成之觸媒 　　(4)將(1)~(3)中任一者所記載之各成分擔持或含浸於SiO2 、Al2 O3 等之無機粒子狀載體或乙烯、苯乙烯等之烯烴聚合物等之粒子狀聚合物載體所得之觸媒。 　　[0030] 作為成分(a-1)之製造方法，舉例為日本特開平4-11604、日本特開2006-233207中記載之製造方法。 　　[0031] 作為成分(a-1)舉例為例如Sumikathene(註冊商標) E、Ekuseren(註冊商標) FX(均為住友化學股份有限公司製)、Evolue(註冊商標)、Tafmer(註冊商標) (Prime Polymer股份有限公司製)、HarmorexTM 、KernelTM (日本聚乙烯股份有限公司製)、EnableTM 、ExceedTM (均為ExxonMobile Chemical製)、ELITETM 、AFFINITYTM (The DOW Chemical Company製)。 　　[0032] 成分(a-2)係含有基於乙烯之單體單位及選自碳原子數4~20之α-烯烴之至少一種的基於α-烯烴之單體單位，流動之活性化能為50kJ/mol以上90kJ/mol以下，分子量分佈為5~15的乙烯-α-烯烴共聚物。前述樹脂組成物可僅含1種成分(a-2)，亦可含2種以上。 　　成分(a-2)可僅含1種基於α-烯烴之單體單位，亦可含2種以上。成分(a-2)亦可含基於乙烯、α-烯烴及不飽和酯以外之其他單體的單體單位。 　　作為α-烯烴舉例為例如1-丁烯、1-戊烯、1-己烯、3-甲基-1-丁烯、3,3-二甲基-1-丁烯、4-甲基-1-戊烯、1-辛烯。α-烯烴較好為碳原子數4~8之α-烯烴，基於取得容易性，更好為1-丁烯、1-己烯、4-甲基-1-戊烯、1-辛烯。 　　作為成分(a-2)舉例為例如乙烯-1-丁烯共聚物、乙烯-1-己烯共聚物、乙烯-4-甲基-1-戊烯共聚物、乙烯-1-辛烯共聚物、乙烯-1-丁烯-1-己烯共聚物、乙烯-1-丁烯-4-甲基-1-戊烯共聚物、乙烯-1-丁烯-1-辛烯共聚物、乙烯-1-己烯-1-辛烯共聚物，較好為乙烯-1-己烯共聚物、乙烯-1-丁烯-1-己烯共聚物。 　　[0033] 成分(a-2)之流動之活性化能為50kJ/mol以上且90kJ/mol以下，較好為55kJ/mol以上80kJ/mol以下，更好為為60kJ/mol以上70kJ/mol以下。 　　[0034] 成分(a-2)之分子量分佈為5~15，較好為6~13，更好為7~11。 　　[0035] 以荷重21.18N、溫度190℃之條件藉由JIS K 7210-1995規定之A法測定之成分(a-2)之熔融流動速率(MFR)較好為0.1~30g/10分鐘，更好為0.2~20g/10分鐘，又更好為0.3~10g/10分鐘。 　　[0036] 成分(a-2)之密度較好為850~940kg/cm3 ，更好為880~930kg/cm3 ，又更好為910~925 kg/cm3 。密度係依據JIS K7112-1980規定之A法測定。 　　[0037] 作為成分(a-2)之製造方法，舉例為日本特開2007-269997、日本特開2009-161779、日本特開2009-256661中記載之製造方法。 　　[0038] (乙烯-不飽和酯共聚物(成分(b))) 　　成分(b)係包含基於乙烯之單體單位及基於不飽和酯之單體單位的共聚物。 　　作為基於不飽和酯之單體單位舉例為例如基於α,β-不飽和羧酸烷酯之單體單位、基於羧酸乙烯酯之單體單位。 　　樹脂組成物可僅含1種成分(b)，亦可含2種以上。 　　[0039] 作為α,β-不飽和羧酸烷酯舉例為例如丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯、甲基丙烯酸甲酯、甲基丙烯酸乙酯、甲基丙烯酸丁酯。 　　作為羧酸乙烯酯舉例為例如乙酸乙烯酯、丙酸乙烯酯、丁酸乙烯酯、苯甲酸乙烯酯。 　　基於不飽和酯之單體單位較好為基於丙烯酸甲酯之單體單位、基於丙烯酸乙酯之單體單位、基於丙烯酸丁酯之單體單位、基於甲基丙烯酸甲酯之單體單位、基於乙酸乙烯酯之單體單位。 　　[0040] 作為成分(b)舉例為乙烯-丙烯酸甲酯共聚物、乙烯-丙烯酸乙酯共聚物、乙烯-丙烯酸丁酯共聚物、乙烯-甲基丙烯酸甲酯共聚物、乙烯-甲基丙烯酸乙酯共聚物、乙烯-乙酸乙烯酯共聚物、乙烯-丙酸乙烯酯共聚物、乙烯-丁酸乙烯酯共聚物、乙烯-苯甲酸乙烯酯共聚物，較好為乙烯-丙烯酸甲酯共聚物、乙烯-丙烯酸乙酯共聚物、乙烯-丙烯酸丁酯共聚物、乙烯-甲基丙烯酸甲酯共聚物、乙烯-乙酸乙烯酯共聚物，更好為乙烯-乙酸乙烯酯共聚物。 　　[0041] 成分(b)亦可單體單位的一部分藉由水解等而改質。經改質之乙烯-不飽和酯共聚物之例舉例為皂化乙烯乙酸乙烯酯共聚物。 　　[0042] 以荷重21.18N、溫度190℃之條件藉由JIS K 7210-1995規定之A法測定。成分(b)之MFR較好為0.01~ 50g/10分鐘，更好為0.1~20g/10分鐘，又更好為1.5~10g/10分鐘。 　　[0043] 成分(b)所含之基於不飽和酯之單體單位含量，相對於成分(b)所含之基於乙烯之單體單位與基於不飽和酯之單體單位含量之合計重量100重量%，較好未達50重量%，更好為40重量%以下，又更好為30重量%以下。成分(b)所含之基於不飽和酯之單體單位含量，相對於成分(b)所含之基於乙烯之單體單位與基於不飽和酯之單體單位含量之合計重量100重量%，較好為5重量%以上，更好為10重量%以上，又更好為15重量%以上。成分(b)所含之基於不飽和酯之單體單位含量，相對於成分(b)所含之基於乙烯之單體單位與基於不飽和酯之單體單位含量之合計重量100重量%，較好為5重量%以上且未達50重量%，更好為10重量%以上40重量%以下，又更好為15重量%以上30重量%以下。 　　[0044] 成分(b)之製造方法舉例為例如使乙烯與不飽和酯在自由基產生劑存在下，於50~400MPa、100~300℃下，於適當溶劑或鏈轉移劑存在下或不存在下共聚合之高壓自由基聚合法。藉由調整高壓自由基聚合之聚合條件，可控制成分(b)之平均分子量、成分(b)之輔單體含量等。 　　[0045] 作為成分(b)舉例為例如Evatate(註冊商標)、Sumitate(註冊商標)、Acryft(註冊商標) (均為住友化學股份有限公司製)、Evaflex(註冊商標)、Nucrel(註冊商標)、Elvaloy(註冊商標) AC(三井杜邦聚化學品股份有限公司製)、Novatec(註冊商標) EVA(日本聚乙烯股份有限公司製)、Ultrasen(註冊商標)、Melsen(註冊商標)H(TOSOH股份有限公司製)、UBE聚乙烯(EVA)(宇部丸善聚乙烯股份有限公司)、Elvax(註冊商標)、APPEEL (註冊商標)(DU PONT DE NEMOURS AND COMPANY製)。 　　[0046] 樹脂組成物中，相對於成分(a)與前述成分(b)之合計量100重量%，該樹脂組成物中之全部聚合物中所含之基於不飽和酯之單體單位之含量為11重量%以上18重量%以下。該樹脂組成物中之全部聚合物中所含之基於不飽和酯之單體單位之含量較好為12重量%以上，更好為13重量%以上，較好18重量%以下，更好16重量%以下，又更好15重量%以下，特佳為14重量%以下。該樹脂組成物中之全部聚合物中所含之基於不飽和酯之單體單位之含量較好為12重量%以上16重量%以下，更好為12重量%以上15重量%以下，特佳為13重量%以上14重量%以下。 　　樹脂組成物係以該樹脂組成物中之全部聚合物中所含之基於不飽和酯之單體單位之含量成為前述範圍之方式，調整該樹脂組成物中之成分(a)與成分(b)之含量、成分(b)中所含之基於不飽和酯之單體單位之含量。 　　[0047] 藉由調整該樹脂組成物中之全部聚合物中所含有之成分(b)或基於不飽和酯之單體單位之含量，可控制薄膜之樹脂層剖面中之暗部相的單位界面長。 　　藉由使樹脂組成物中之全部聚合物中所含之基於不飽和酯之單體單位之含量為11重量%以上18重量%以下，可使薄膜之樹脂層剖面中之暗部相的單位界面長成為15.0μm-1 以上。 　　[0048] 相對於樹脂組成物中含有之成分(a)與成分(b)之合計量100重量%，成分(a)之含量較好為30重量%以上70重量%以下，更好為40重量%以上60重量%以下。 　　藉由調整該樹脂組成物中之成分(a)之含量，可控制薄膜之樹脂層剖面中之亮部相的單位界面長。 　　藉由使相對於樹脂組成物中含有之成分(a)與成分(b)之合計量100重量%，成分(a)之含量較好為30重量%以上70重量%以下，可使薄膜之樹脂層剖面中之亮部相的單位界面長成為15.0μm-1 以上。 　　[0049] (微粒子(成分(c))) 　　樹脂組成物所含之微粒子(以下有時記載為成分(c))係平均折射率為1.48以上1.55以下，且體積基準之粒度分佈之累計分率中之50%徑(D50)為6μm以上15μm以下，且由下述式(1)求出之重量變化率E未達5重量%之微粒子， 　　E=((G-F)/F)×100 (1) 　　(式(1)中，E係重量變化率(重量%)，F係將該微粒子於未達0.03MPa之減壓下，於溫度110℃，乾燥至每1小時之重量減少率成為0.1重量%以下後之微粒子重量(g)，G係進行前述F之測定之微粒子在常壓下、相對濕度75%及溫度40℃保持24小時後之微粒子重量(g))。 　　前述樹脂組成物可僅含1種成分(c)，亦可含2種以上。 　　[0050] 成分(c)之平均折射率為1.48以上1.55以下，較好為1.49以上1.52以下。折射率係藉由最小偏角法或臨界角法測定。 　　[0051] 成分(c)之體積基準之粒度分佈之累計分率中之50%徑(D50)為6μm以上15μm以下，較好為6μm以上9μm以下，更好為6μm以上8μm以下。本說明書中，成分(c)之體積基準之粒度分佈係藉雷射繞射‧散射法測定。 　　[0052] 基於提高所得薄膜之透明性之觀點，成分(c)之體積基準之粒度分佈之累計分率中之90%徑(D90)較好為9μm以上，更好為10μm以上。基於所得薄膜之黏連變少之觀點，成分(c)之D90較好為18μm以下，更好為16μm以下，又更好為15μm以下，特佳為14μm以下。 　　[0053] 成分(c)較好為自甲基丙烯酸甲酯聚合物微粒子、鋁酸矽酸鈉鈣微粒子、鋁酸矽酸鈉微粒子、燒成高嶺土微粒子、燒成矽藻土微粒子及燒成氧化矽微粒子所成之群中選擇之至少一種微粒子，更好為自甲基丙烯酸甲酯聚合物微粒子、鋁酸矽酸鈉鈣微粒子、鋁酸矽酸鈉微粒子所成之群中選擇之至少一種微粒子，基於提高薄膜透明性之觀點，更好為鋁酸矽酸鈉鈣微粒子。 　　[0054] 基於含該樹脂組成物之薄膜之透明性、外觀之觀點，樹脂組成物中之成分(c)之含量較好為30000ppm以下，更好為27000ppm以下，又更好為20000ppm以下，特佳為17000ppm以下。又，基於防止薄膜黏連之觀點，成分(c)之含量較好為3000ppm以上，更好為5000ppm以上，又更好為10000ppm以上，特佳為15000ppm以上。 　　[0055] 藉由調整成分(c)之平均折射率及重量變化率，可控制於將薄膜以溫度160℃、時間1秒、密封棒寬度10mm、壓力450kPa之條件，對於由熔點為157℃以上159℃以下且熔融流動速率為2.5g/10分鐘以上且4.0g/10分鐘以下之聚丙烯所成之厚度為400μm以上且500μm以下的被黏著體進行熱密封時之剝離能。 　　藉由使用平均折射率為1.48以上1.55以下之成分(c)，可將薄膜之前述剝離能設為60mJ以上。 　　[0056] 樹脂組成物亦可含有黏著性賦予樹脂。相對於樹脂組成物所含之樹脂成分之總重量100重量%，黏著性賦予樹脂之含量較好為1重量%以上20重量%以下。 　　作為黏著性賦予樹脂舉例為例如脂肪族系烴樹脂、脂環族系烴樹脂、芳香族系烴樹脂、聚萜烯系樹脂、松脂類、苯乙烯系樹脂、香豆素‧茚樹脂。 　　作為脂肪族系烴樹脂舉例為例如使包含1-丁烯、異丁烯、丁二烯、1,3-戊二烯、異戊二烯等之碳原子數4~5之單或二烯烴之至少一種以上之餾分聚合而得之樹脂。 　　作為脂環族系烴樹脂舉例為例如使經消耗之C4~C5餾分中之二烯成分環化二聚化後聚合所得之樹脂、使環戊二烯等之環狀單體聚合之樹脂、使芳香族系烴樹脂經核內氫化之樹脂。 　　作為芳香族系烴樹脂舉例為例如使含有乙烯基甲苯、茚、α-甲基苯乙烯等之C8~C10之乙烯基芳香族烴之至少一種以上的餾分聚合而得之樹脂，或使該等餾分與上述脂肪族烴餾分共聚合而得之樹脂。 　　作為聚萜烯系樹脂舉例為例如α-蒎烯聚合物、β-蒎烯聚合物、二戊烯聚合物、萜烯-酚共聚物、α-蒎烯-酚共聚物、該等之氫化物。 　　作為松脂類舉例為例如脂松香(gum rosin)、木松香、妥爾油等之松脂及其改質物，作為改質物舉例為施以氫化、不均化、二聚化、酯化等之改質者。 　　作為苯乙烯系樹脂舉例為例如含有一種以上基於純度高的苯乙烯、乙烯基甲苯、α-甲基苯乙烯、異丙基甲苯等之苯乙烯系單體之單體單位之分子量低的樹脂狀聚合物。 　　[0057] 樹脂組成物亦可根據需要含有抗氧化劑、滑劑、抗靜電劑、加工性改良劑、抗黏連劑等之添加劑。 　　作為抗氧化劑舉例為例如2,6-二-第三丁基-對-甲酚(BHT)、肆[亞甲基-3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯]甲烷(汽巴特用化學品公司製，商品名：IRGANOX 1010)或正-十八烷基-3-(4’-羥基-3,5’-二-第三丁基苯基)丙酸酯(汽巴特用化學品公司製，商品名：IRGANOX 1076)等之酚系安定劑、雙(2,4-二-第三丁基苯基)季戊四醇二磷酸酯或三(2,4-二-第三丁基苯基)磷酸酯等之磷酸酯系安定劑、6-[3-(3-第三丁基-4-羥基-5-甲基苯基)丙氧基]-2,4,8,10-四-第三丁基二苯并[d,f][1,3,2]二氧雜磷雜環庚烷(住友化學股份有限公司製，商品名：SUMILIZER GP)等之酚磷酸酯二官能系安定劑等。抗氧化劑之添加量，相對於組成物中之成分(a)與成分(b)之合計量100重量份，較好為0.001~1重量份，更好為0.01~0.1重量份。 　　[0058] 作為滑劑舉例為例如芥酸醯胺、高級脂肪酸醯胺、高級脂肪酸酯等。滑劑之添加量，相對於組成物中之成分(a)與成分(b)之合計量100重量份，較好為0.01~1重量份，更好為0.05~0.5重量份。 　　作為抗靜電劑舉例為例如碳原子數8~22之脂肪酸甘油酯、山梨糖醇酐酸酯、聚乙二醇酯等。抗靜電劑之添加量，相對於組成物中之成分(a)與成分(b)之合計量100重量份，較好為0.01~1重量份，更好0.1~0.5重量份。 　　作為加工性改良劑舉例為例如硬脂酸鈣等之脂肪酸金屬鹽。加工性改良劑之添加量，相對於組成物中之成分(a)與成分(b)之合計量100重量份，較好為0.01~1重量份，更好0.1~0.5重量份。 　　作為抗黏連劑舉例為例如氧化矽、結晶質或非晶質之鋁酸矽酸鹽、黏土、滑石、矽藻土、長石、高嶺土、沸石、高嶺石、矽灰石、絹雲母、交聯丙烯酸系樹脂、交聯聚乙烯系樹脂、交聯聚苯乙烯系樹脂、交聯聚矽氧系樹脂、聚醯胺系樹脂、聚酯系樹脂等。抗黏連劑之添加量，相對於組成物中之成分(a)與成分(b)之合計量100重量份，較好為0.1~5重量份，更好0.3~3重量份。 　　[0059] 成分(c)及各種添加劑可於樹脂組成物中所含之成分(a)與成分(b)預先摻合後添加，亦可添加於成分(a)、成分(b)之任一者，或亦可添加於各者，亦可作為摻合於成分(a)、成分(b)之任一者之母批料使用。 　　[0060] 樹脂組成物之製造方法舉例為習知摻合方法。作為習知摻合方法舉例為例如使各聚合物及微粒子乾摻合之方法，熔融摻合之方法。作為乾摻合之方法舉例為使用亨歇爾混合機、滾筒混合機等之各種摻合機之方法。作為熔融混練之方法舉例為使用單軸押出機、雙軸押出機、班伯里混合機、熱輥等之各種混合機之方法。 　　[0061] 易剝離薄膜之一實施態樣包含基材層與含前述樹脂組成物之樹脂層，易剝離薄膜之一表面為基材層，另一表面為樹脂層。該易剝離薄膜亦可含有組成與基材層及含前述樹脂組成物之層不同的層。 　　[0062] 作為基材層舉例為由例如賽璐吩、紙、紙板、織物、鋁箔、尼龍6或尼龍66等之聚醯胺樹脂、聚對苯二甲酸乙二酯或聚對苯二甲酸丁二酯等之聚酯樹脂、延伸聚丙烯等所成之層。 　　藉由製膜，可獲得包含含前述樹脂組成物之樹脂層的樹脂薄膜。樹脂薄膜可為僅由含前述樹脂組成物之層所成的單層樹脂薄膜，亦可為具有含前述樹脂組成物之層與組成與該層不同之層的多層樹脂薄膜。僅由含樹脂組成物之層所成的單層樹脂薄膜可藉由吹塑薄膜成形法製造。 　　[0063] 所謂組成與含前述樹脂組成物之層不同之層舉例為例如含乙烯系聚合物之層。作為前述乙烯系聚合物舉例為例如高壓法低密度聚乙烯、乙烯-α-烯烴共聚物。 　　可獲得具有含前述樹脂組成物之層與含乙烯系聚合物之層，且含前述樹脂組成物之層為至少一表面層的樹脂薄膜。 　　具有含前述樹脂組成物之層與含乙烯系聚合物之層，且含前述樹脂組成物之層為至少一表面層的樹脂薄膜可使樹脂組成物與乙烯系聚合物共擠出，藉由吹塑薄膜成形而製造。 　　[0064] 易剝離薄膜亦可為具有含前述樹脂組成物之層與含與乙烯系聚合物不同的聚合物之基材層，且含前述樹脂組成物之層為至少一表面層的易剝離薄膜。 　　易剝離薄膜亦可為具有含前述樹脂組成物之層、含乙烯系聚合物之層與含與乙烯系聚合物不同的聚合物之基材層，且含前述樹脂組成物之層為至少一表面層的易剝離薄膜。 　　[0065] 薄膜之樹脂層厚度為5μm以上100μm以下，較好為10μm以上80μm以下，更好為15μm以上50μm以下。薄膜之樹脂層厚度係使用低溫切片機於薄膜厚度方向薄切，以光學顯微鏡觀察所得試驗片之剖面而測定。 　　[0066] 作為基材層舉例為由例如賽璐吩、紙、紙板、織物、鋁箔、尼龍6或尼龍66等之聚醯胺樹脂、聚對苯二甲酸乙二酯或聚對苯二甲酸丁二酯等之聚酯樹脂、延伸聚丙烯等所成之層。 　　[0067] 上述易剝離薄膜為具有含與乙烯系聚合物不同聚合物之基材層的易剝離薄膜時，作為該易剝離薄膜之製造方法，舉例為例如將僅由含樹脂組成物之層所成的單層薄膜，或具有含樹脂組成物之層與含乙烯系聚合物之層的多層薄膜層合於上述基材之層合法。作為層合法，舉例有乾層合法、濕層合法、夾層層合法。 　　[0068] 前述易剝離薄膜可作為對於各種容器的蓋使用。作為容器的材料舉例為例如丙烯均聚物、丙烯無規共聚物、高密度聚乙烯、乙烯-α-烯烴共聚物、高壓法低密度聚乙烯、聚酯(PET)、聚氯乙烯(PVC)、聚苯乙烯(PS)、聚碳酸酯(PC)。本發明之易開封薄膜可使用作為果凍、布丁、優格、豆腐、速食麵、麵條類等之各種食品類、醫藥品類、化妝品類及工業製品的包裝容器的蓋。 　　[0069] 作為使用作為容器的材料之丙烯均聚物舉例為例如住友Nobrene(註冊商標)之均聚物等級(住友化學股份有限公司製)、Prime Polypro(註冊商標)之均聚物等級(Prime Polymer股份有限公司製)。作為使用作為容器的材料之丙烯無規共聚物舉例為例如住友Nobrene(註冊商標)之無規等級(住友化學股份有限公司製)、Prime Polypro(註冊商標)之無規等級(Prime Polymer股份有限公司製)。作為使用作為容器的材料之高密度聚乙烯舉例為例如NovatecTM HD(日本聚乙烯股份有限公司製)、HI-ZEX(註冊商標)、Evolue(註冊商標) H(均為Prime Polymer股份有限公司製)。作為使用作為容器的材料之聚酯舉例為例如Unipet(註冊商標)(UNIPET股份有限公司製)、非晶性聚酯(APET)薄片(例如Novaclear：三菱化學股份有限公司製、FR、FR-1、FS：均為帝人股份有限公司製等)。作為使用作為容器的材料之聚氯乙烯舉例為例如Viniparu(SANVIC股份有限公司製)等之軟質聚氯乙烯(SPVC)薄片、Esuviron(註冊商標)薄片(積水成型工業股份有限公司製)等之硬質聚氯乙烯(HPVC)薄片)。作為使用作為容器的材料之聚苯乙烯舉例為例如積水成型工業股份有限公司製之PS平板(HIPS製)。作為使用作為容器的材料之聚碳酸酯舉例為例如Panlite(註冊商標)(帝人股份有限公司製)、Yupilon(註冊商標)、Novalex(註冊商標)、Zanter(註冊商標)(三菱工程塑膠股份有限公司製)。 　　[0070] 以將由前述易剝離薄膜所成之蓋之含前述樹脂組成物所成之層與容器本體之凸緣部接觸之方式，使蓋與容器本體之凸緣部重疊，藉由施加熱及壓力而熱密封，可製作密封容器。 　　由具有基材層及含樹脂組成物之層的易剝離薄膜之蓋，對由各種材料所成之容器予以熱密封時之熱密封強度，基於成為不會因輸送中之衝擊等使密封部剝落而使內容物漏出之密封性之觀點，分別較好為5N/15mm以上，基於由成人的手可容易開封之易剝離性之觀點，分別較好為20N/15mm以下。 　　基於兼具密封性與易剝離性之觀點，含前述易剝離薄膜之蓋之熱密封強度較好為5~20N/15mm。 　　[0071] [實施例] 　　以下，依據實施例及比較例詳細說明本發明，但本發明並非限定於該等實施例。 　　[0072] (1)原料樹脂及添加劑 　　實施例中記載之乙烯-α-烯烴共聚物、乙烯-不飽和酯共聚物、黏著性賦予樹脂及添加劑係使用下述者。 　　[0073] 成分(a) 　　LL1：茂金屬觸媒直鏈狀低密度聚乙烯Sumikathene (註冊商標) EP GT140 　　(住友化學股份有限公司製，乙烯-1-丁烯-1-己烯共聚物，溫度190℃及荷重21.18N下之MFR：0.9g/10分鐘，密度：918kg/m3 ，Mw/Mn=8.6，Ea=69.3kJ/mol) 　　LL2：茂金屬觸媒直鏈狀低密度聚乙烯Sumikathene (註冊商標) E FV201 　　(住友化學股份有限公司製，乙烯-1-己烯共聚物，溫度190℃及荷重21.18N下之MFR 2.3g/10分鐘，密度916kg/m3 ，Mw/Mn=3.6，Ea=35.8kJ/mol) 成分(b) 　　OE1：Sumitate KA-30(住友化學股份有限公司製，乙烯-乙酸乙烯酯共聚物，基於乙酸乙烯酯之單體單位含量28重量%，溫度190℃及荷重21.18N下之MFR 7.0g/10分鐘) 　　黏著性賦予樹脂 　　TA1：荒川化學工業股份有限公司製ALCON(註冊商標) P-140(脂環族飽和烴樹脂，環球法軟化點=140℃，Mw=1920 g/mol) 　　TA2：Kraton Corporation製Clayton(註冊商標) G1653 (苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物SEBS，溫度230℃及荷重21.18N下之MFR 25g/10分鐘，苯乙烯含量30wt%) 成分(c) 　　C1：MA1010(日本觸媒股份有限公司製，聚甲基丙烯酸甲酯交聯體微粒子) 　　平均折射率1.51 　　C2：Shilton JC-70(水澤化學工業股份有限公司製，鋁酸矽酸鈉鈣‧水合物微粒子，平均折射率：1.50) 　　C3：AMT-100R(水澤化學工業股份有限公司製，鋁酸矽酸鈉微粒子，平均折射率：1.50) 　　C4：Gasil AB905(PQ Corporation股份有限公司製，氧化矽微粒子，平均折射率：1.44) 　　C5：Minbloc SC6(Sibelco Japan股份有限公司製，燒成氧化矽微粒子，平均折射率：1.51) 抗氧化劑 　　AO：Sumilizer GP(住友化學股份有限公司製) 滑劑 　　SA：脂肪酸醯胺E(花王化學股份有限公司製) 　　[0074] (2)熱密封強度 　　以使所製作之多層薄膜之樹脂組成物層與下述各被黏著體接觸之方式重疊，藉下述密封條件，使用熱密封機(TESTER產業公司製)進行熱密封，獲得樣品。所得樣品於23℃放置24小時以上後，於對於密封寬度方向直角方向切出具有密封部之試驗片(密封寬度×密封長度=10mm×15mm)。其次，將所得試驗片之密封部藉由拉伸試驗機，以300mm/分鐘之速度180°剝離，測定每寬15mm之熱密封強度。採用所得熱密封強度之最大值。熱密封強度若為5~20N/15mm，則具備密封性與易剝離性。 　　[0075] ＜密封條件＞ 　　密封溫度：160℃ 　　密封時間：1秒 　　密封寬度：10mm 　　密封壓力：450kPa 被黏著體： 　　被黏著體1：聚丙烯薄片(PP) 　　(Nobrene H501之薄片 厚0.44mm，熔點為157℃以上159℃以下，溫度230℃及荷重21.18N下之熔融流動速率為2.5g/10分鐘以上4.0g/10分鐘以下) 　　被黏著體2：耐衝擊性聚苯乙烯薄片(HIPS) 　　(日本塑膠工業股份有限公司製 PS薄片 厚0.5mm) 　　被黏著體3：硬質聚氯乙烯薄片(HPVC) 　　(積水成型工業股份有限公司製Environ薄片A-100 厚0.2mm) 　　被黏著體4：非晶性聚對苯二甲酸乙二酯薄膜(APET) 　　(OJK股份有限公司製 PET26 厚0.2mm) 　　[0076] (3)濁度 　　依據ASTM1003，測定藉由後述方法成形之吹塑薄膜(厚30μm)之濁度(單位：%)。濁度越小，透明性越優異。 　　[0077] (4)內部濁度 　　將藉由後述方法成形之吹塑薄膜(厚30μm)浸漬於放入有鄰苯二甲酸二甲酯之透明胞中，測定於浸漬狀態之薄膜之內部濁度(單位：%)。內部濁度越小，透明性越優異。 　　[0078] (5)成分(c)之重量變化率測定 　　將放入有成分(c)之100ml旋蓋瓶放入真空乾燥機中，於未達0.03MPa之減壓下，於溫度110℃乾燥3小時。乾燥後，自乾燥機取出成分(c)，迅速進行重量測定。乾燥3小時後之成分(c)的重量設為F(g)。又，自乾燥2小時後之成分(c)的重量與前述F求出之每1小時之重量減少率於任一成分(c)中均為0.1重量%以下。 　　乾燥3小時後之成分(c)放入設定於相對濕度75%、溫度40℃之條件的恆溫恆濕槽中，靜置24小時。隨後，自恆溫恆濕槽取出成分(c)，迅速進行重量測定。恆溫恆濕槽保持後之成分(c)的重量設為G(g)。各成分(c)的F、G及藉由下述式(1)求出之重量變化率E(重量%)示於表1。 　　E=100(G-F)/F (1) 　　[0079] (6)成分(c)之體積基準之粒度分佈之累計分率中之50%徑(中值徑，D50)及成分(c)之體積基準之粒度分佈之累計分率中之90%徑(D90) 　　對於將成分(c)放入六偏磷酸鈉溶液中，以均質機分散10分鐘之試料，使用MICROTRAC粒度分析計(日機裝股份有限公司製「MT-3300EXII」)照射雷射光獲得繞射散射光之強度分佈。自所得強度分佈求出體積基準之粒度分佈，算出該粒度分佈之累計分率中之50%徑(中值徑，D50)及90%徑(D90)。但，關於C1，將聚氧乙烯(20)分散於山梨糖醇酐單月桂酸酯溶液中進行測定，各成分(c)之D50及D90值示於表1。 　　[0080]
Figure 02_image005
[0081] (7)上下黏連(上下BL，單位：N/m2 ) 　　將藉由後述方法成形之吹塑薄膜(厚30μm)切成10cm×10cm，以使吹塑薄膜成形時之管內側彼此密著之方式重疊，於調整為40℃之烘箱中，以400g/cm2 之荷重下進行7天狀態調整。狀態調整後，使用McKenzie黏連試驗機(島津製作所製)，測定以剝離荷重速度20g/分鐘於垂直方向剝離所需之荷重量。該值越小，耐黏連性越優異。 　　[0082] (8)母批料之製造 　　以表2記載之比率將LL1或LL2與添加劑以班伯里混練機於160℃熔融混練後，藉由造粒機顆粒化，製造添加劑母批料。 　　[0083]
Figure 02_image007
[0084] (9)乙烯系共聚物之熔融流動速率(MFR，單位：g/10分鐘) 　　以荷重21.18N、溫度190℃之條件藉由JIS K 7210-1995規定之A法測定熔融流動速率。 　　[0085] (10)聚丙烯之熔融流動速率(MFR，單位：g/10分鐘) 　　以荷重21.18N、溫度230℃之條件藉由JIS K 7210-1995規定之A法測定熔融流動速率。 　　[0086] (11)分子量分佈(Mw/Mn) 　　使用凝膠滲透層析(GPC)法，藉由下述條件(1)~(8)，測定重量平均分子量(Mw)與數平均分子量(Mn)，求出Mw/Mn。基於ISO16014-1之記載，規定層析圖上之基準線。 (測定條件) 　　裝置：HLC-8121GPC/HT(TOSOH股份有限公司製) 　　GPC管柱：TOSOH TSKgel GMH6-HT，7.8mm I.D. ×300mm (TOSOH股份有限公司製) 3根 　　移動相：於鄰二氯苯(和光純藥工業股份有限公司，特級)中添加0.1w/V BHT而使用 　　流速：1mL/分鐘 　　管柱烘箱溫度：140℃ 　　檢測：示差折射率檢測器(RID) 　　RID單元胞溫度：140℃ 　　試料溶液注入量：300μL 　　試料溶液濃度：1mg/mL 　　GPC管柱校正用標準物質：TOSOH製標準聚苯乙烯分別以下表之重量於室溫溶解於5mL鄰二氯苯(與移動相相同組成)而調製。
Figure 02_image009
[0087] (12)基於乙酸乙烯酯之單體單位含量 　　依據JIS K7192測定基於乙酸乙烯酯之單體單位含量。 　　[0088] (13)TEM觀察 　　藉由後述方法成形之薄膜切取為直徑1cm之圓形。切取之薄膜以基材層為外側，以樹脂層為內側彎曲後，沿著與對於彎曲面，曲率成為零之直線成垂直之該薄膜上之直線(MD方向)，以寬50μm切出薄膜，作成切片。所得切片包埋於樹脂中，將包埋之切片沿著薄膜之MD方向以低溫切片機切斷。所得試料於RuO4 中於60℃進行1.5小時染色後，水洗、風乾。隨後，藉由低溫切片機自所得之切片切出超薄切片，獲得觀察用切片。將平行於MD方向之剖面作為觀察面。 　　所得觀察用切片之MD剖面之樹脂層以TEM(日本電子股份有限公司製JEM-2100F)以倍率30000倍(6.8μm×8.8μm，且長軸取為與MD方向±25°)進行測定，獲得TEM圖像。 　　[0089] (14)單位界面長(單位：/μm) 　　對所得TEM圖像，為了去除雜訊而實施平滑化處理，為了去除週期背景而實施陰影修正。所得TEM圖像之臨限值為130以上之部分成為白色，臨限值未達130之部分成為黑色進行二值化處理。二值化處理後之圖像中，白色部分成為亮部相，黑色部分成為暗部相。圖像解析係使用圖像解析軟體(旭化成工程公司製A像君)。藉由以下之式，求出亮部相之單位界面長及暗部相之單位界面長。 　　亮部相之單位界面長(μm-1 )=圖像中全部亮部像之周圍長合計(μm)/圖像全體面積(μm2 ) 　　黑部相之單位界面長(μm-1 )=圖像中全部暗部像之周圍長合計(μm)/圖像全體面積(μm2 ) 　　[0090] (15)剝離能(對PP)(單位：mJ) 　　對於聚丙烯測定上述(2)熱密封強度時，測定剝離距離(mm)及剝離應力(N)。其次，將水平方向之x軸設為剝離距離(mm)，垂直方向之y軸取為剝離應力(N)，使x軸於y軸為0N之點與y軸交叉，y軸於x軸為剝離距離為0mm之點與x軸交叉，測定剝離應力-剝離距離曲線。 　　使用所得剝離應力-剝離距離曲線，自以通過剝離應力-剝離距離曲線之終點(剝離結束時之點)與y軸平行之直線與x軸及剝離應力-剝離距離曲線所包圍之部分的面積求出剝離能(單位：mJ)。 　　[0091] (16)聚丙烯之熔點(單位：℃) 　　使用示差掃描熱量計(TA Instruments公司製Q100)以如下條件測定示差掃描熱量測定曲線，自第2次升溫時之示差掃描熱量測定曲線求出熔點及剝離轉移點。 ＜測定條件＞ 　　升溫(第1次)：自20℃升溫至230℃後，於230℃保持5分鐘。 　　降溫：第1次升溫操作後，立即以5℃/分鐘自230℃降溫至40℃後，於40℃保持5分鐘。 　　升溫(第2次)：降溫操作後，立即以5℃/分鐘自40℃升溫至230℃後。 　　[0092] (17)吹塑薄膜之發泡確認 　　使目視觀察藉由後述方法成形之吹塑薄膜，確認有無發泡。 　　[0093] (實施例1) [吹塑薄膜成形] 　　將LL1、OE1及各種添加劑母批料以表4之摻合組成利用滾筒混合機混合。所得混合物使用PLACO公司製50mmφ擠出機與模嘴125mmφ、模唇開度2.0mm之吹塑成形機，於150、擠出量25kg/hr、吹出比2.0、薄膜厚30μm之條件成形為薄膜。對所得薄膜之吹塑薄膜管單面，以成為濡濕張力45dyn/cm之方式進行電暈放電處理。吹塑薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 [多層薄膜成形] 　　使用康井精機(股)製塗佈機，將乙酸乙酯及脂肪酸酯系塗佈劑的Takelac(註冊商標)A-3210與Takenate(註冊商標)A-3(均為三井化學股份有限公司製)以如下摻合比混合後之液體，塗佈於聚酯薄膜(東洋紡(股)製，商品名「E5102」，厚15μm，寬500mm)上。隨後使所得聚酯薄膜與上述所得之薄膜的電暈處理面壓著後，以40℃之烘箱加熱48小時，獲得多層薄膜。 　　Takelac(註冊商標)A-3210/Takenate(註冊商標)A-3/乙酸乙酯=12/1/32(重量比) 　　使用該多層薄膜測定熱剝離強度。結果示於表5。 　　[0094] (實施例2) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0095] (實施例3) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0096] (實施例4) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0097] (實施例5) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0098] (實施例6) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。多層薄膜之單位界面長及剝離能示於表3。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0099] (實施例7) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0100] (實施例8) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0101] (實施例9) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0102] (實施例10) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0103] (實施例11) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。多層薄膜之單位界面長及剝離能示於表3。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為11重量%。 　　[0104] (實施例12) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。多層薄膜之單位界面長及剝離能示於表3。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為17重量%。 　　[0105] (實施例13) 　　除了將LL2、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。多層薄膜之單位界面長及剝離能示於表3。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0106] (實施例14) 　　除了將LL2、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0107] (實施例15) 　　除了將LL2、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0108] (實施例16) 　　除了將LL1、OE1、TA1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為14重量%。 　　[0109] (實施例17) 　　除了將LL1、OE1、TA2及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為11重量%。 　　[0110] (比較例1) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為20重量%。 　　[0111] (比較例2) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為8重量%。 　　[0112] (比較例3) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。多層薄膜之單位界面長及剝離能示於表3。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0113] (比較例4) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為14重量%。 　　[0114] (比較例5) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為13重量%。 　　[0115] (比較例6) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為11重量%。 　　[0116] (比較例7) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。多層薄膜之單位界面長及剝離能示於表3。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為20重量%。 　　[0117] (比較例8) 　　除了將LL1、OE1及各種添加劑母批料設為表4所示之摻合組成以外，與實施例1同樣獲得吹塑薄膜及多層薄膜。多層薄膜之單位界面長及剝離能示於表3。吹塑薄膜及多層薄膜之物性示於表5。吹塑薄膜所含之基於乙酸乙烯酯之單體單位含量為8重量%。 　　[0118]
Figure 02_image011
Figure 02_image013
(表4中記載之各成分摻合量單位為重量%)。 　　[0119]
Figure 02_image015
[0120] 本專利申請案係基於日本國專利申請第2016-193001號(申請日2016年9月30日)主張優先權者，本文藉由參考，其全文併入本說明書中。[0014] The easy-peelable film of the present invention is fused at a temperature of 160°C, a time of 1 second, a sealing rod width of 10mm, and a pressure of 450kPa. The peeling energy of an adherend with a thickness of 400 μm or more and 500 μm or less made of polypropylene with a flow rate of 2.5 g/10 min or more and 4.0 g/10 min or less when sealing is 60 mJ or more, preferably 80 mJ or more, more It is preferably 100 mJ or more, and more preferably 120 mJ or more. When the peeling energy is less than 60mJ, it is easy to cause foaming of the molten film during blown film forming. In addition, from the viewpoint of easy-opening property, if the peel performance is too high, it is not good. From the viewpoint of easy-opening property, the aforementioned peelability of the easy-peelable film of the present invention is preferably 300 mJ or less, more preferably 280 mJ or less, and still more preferably 250 mJ or less. The aforementioned peelability of the easily peelable film of the present invention is preferably from 60 mJ to 300 mJ, more preferably from 80 mJ to 280 mJ, and still more preferably from 120 mJ to 250 mJ. [0015] The film thickness is 20 μm or more and 150 μm or less, preferably 25 μm or more and 120 μm or less, more preferably 30 μm or more and 100 μm or less. The thickness of the film was measured by thin-cutting in the thickness direction of the film using a cryomicrotome, and observing the cross section of the obtained test piece with an optical microscope. [0016] (Resin layer) The bright part phase in the cross section of the resin layer is determined by, for example, 100% by weight relative to the total weight of the monomer units in the polymer (1), and the content of the monomer unit containing the polar group is 1% by weight. The following polymer (I) is formed. The dark part phase in the cross section of the resin layer is derived from the inclusion of polar group-containing monomer units with a polar group-containing monomer unit content of 5% by weight or more relative to 100% by weight of the total weight of the monomer units in the polymer (II). The monomer unit of the monomer is formed by the polymer (II). The content of the polar group-containing monomer unit of the polymer (I) is 1% by weight or less, preferably 0.5% by weight or less, more preferably 100% by weight of the total weight of the monomer units in the polymer (I) 0.1% by weight or less. The polar group-containing monomer content of the polymer (II) is 5% by weight or more, preferably 7% by weight or more, more preferably 9% by weight relative to 100% by weight of the total weight of monomer units in the polymer (II) More than weight%. Examples of the polymer (I) include ethylene homopolymer, ethylene-α-olefin copolymer, propylene homopolymer, and propylene-α-olefin copolymer. As the polymer (II), for example, an ethylene-unsaturated ester copolymer, an ethylene-vinyl alcohol copolymer, and an ethylene-unsaturated ester-vinyl alcohol copolymer are exemplified. [0017] The resin layer of the film of the present invention contains, for example, the following resin composition. The resin composition contains an ethylene-α-olefin copolymer (hereinafter sometimes referred to as component (a)), an ethylene-unsaturated ester copolymer (hereinafter sometimes referred to as component (b)), and an average refractive index of 1.48 or more and 1.55 Hereinafter, the 50% diameter (D50) of the cumulative fraction of the volume-based particle size distribution is 6 μm or more and 15 μm or less, and the weight change rate calculated by the following formula (1) is less than 5 wt%. Described as ingredient (c)). With respect to 100% by weight of the total weight of the resin components contained in the resin composition, the total content of component (a) and component (b) is preferably 70% by weight or more, more preferably 80% by weight or more, and still more preferably 90% by weight or more, particularly preferably 95% by weight or more. [0018] (Ethylene-α-olefin copolymer (component (a)) The component (a) contained in the resin composition is at least one ethylene-α-olefin copolymer selected from the group consisting of Ethylene monomer units and α-olefin-based monomer units selected from at least one of α-olefins with 4 to 20 carbon atoms. The flow activation energy is 10kJ/mol or more and less than 50kJ/mol, molecular weight distribution It is an ethylene-α-olefin copolymer of 2 to 5 (hereinafter sometimes referred to as component (a-1)) and at least one containing monomer units based on ethylene and selected from α-olefins with 4 to 20 carbon atoms An ethylene-α-olefin copolymer with a flow activation energy of 50kJ/mol or more and 90kJ/mol or less and a molecular weight distribution of 5-15 based on the monomer unit of α-olefin (hereinafter sometimes referred to as component (a-2) ). The aforementioned resin composition may contain only component (a-1) as component (a), may contain only component (a-2), or may contain both component (a-1) and component (a-2) [0019] Component (a-1) contains ethylene-based monomer units and at least one α-olefin-based monomer unit selected from the group consisting of α-olefins with 4 to 20 carbon atoms, and the flow activation energy is An ethylene-α-olefin copolymer of 10kJ/mol or more and less than 50kJ/mol, with a molecular weight distribution of 2 to 5. The aforementioned resin composition may contain only one component (a-1) or two or more. (a-1) It may contain only one monomer unit based on α-olefin, or two or more. Component (a-1) may also contain monomers based on ethylene, α-olefin, and unsaturated esters. The monomer unit. Examples of α-olefins include 1-butene, 1-pentene, 1-hexene, 3-methyl-1-butene, 3,3-dimethyl-1-butene, 4-methyl-1-pentene, 1-octene. The α-olefin is preferably an α-olefin with 4 to 8 carbon atoms, and is more preferably 1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene. Examples of component (a-1) include ethylene-1-butene copolymer, ethylene-1-hexene copolymer, and ethylene-4-methyl- 1-pentene copolymer, ethylene-1-octene copolymer, ethylene-1-butene-1-hexene copolymer, ethylene-1-butene-4-methyl-1-pentene copolymer, ethylene -1-butene-1-octene copolymer, ethylene-1-hexene-1-octene copolymer, preferably ethylene-1-hexene copolymer, ethylene-4-methyl-1-pentene Copolymer, ethylene-1-octene copolymer, ethylene-1-butene-1-hexene copolymer. [0020] Component (a-1) flow activation energy (hereinafter sometimes referred to as "Ea" ) Is 10 kJ/mol or more and less than 50 kJ/mol, preferably 20 kJ/mol or more and less than 40 kJ/mol, more preferably 30 kJ/mol or more and less than 40 kJ/mol. The activation energy of the flow can be increased by increasing the polymerization temperature in the manufacturing method, for example. [0021] The activation energy (Ea) of flow is based on the principle of temperature-time overlap, which is self-made to show the dependence of the angular frequency (unit: rad/sec) on the melting complex viscosity (unit: Pa‧sec) at 190°C The displacement factor (a T ) of the curve is calculated by the Arrhenius equation. Ea is the value obtained by the following method. The melting reviscosity-angular frequency curve of the ethylene-α-olefin copolymer at each temperature (T, unit: ℃) of 130℃, 150℃, 170℃ and 190℃, based on the principle of temperature-time overlap, find out The displacement factor (a T ) at each temperature (T) obtained when the melting complex viscosity-angular frequency curve at each temperature (T) overlaps the melting complex viscosity-angular frequency curve of the ethylene-based copolymer at 190°C. From the displacement factor (a T ) at each temperature (T) and each temperature (T), the first approximation formula of [In(a T )] and [1/(T+273.16)] (below In the formula (I)), Ea is obtained from the slope m of the linear approximation formula and the following formula (II).
Figure 02_image001
a T : Displacement factor Ea: Flow activation energy (unit: kJ/mol) T: Temperature (unit: °C) The above calculation can also use commercially available calculation software. As an example of this calculation software, Rhios V.4.4.4 manufactured by Rheometrics Corporation, etc. are mentioned, for example. Moreover, the displacement factor (a T ) is the two logarithmic curves of the melting complex viscosity-angular frequency at each temperature (T) moving in the direction of the log(Y)=-log(X) axis (but the Y axis is the melting complex viscosity, X The axis is the angular frequency), and the amount of movement when it overlaps with the 190°C melting reviscosity-angular frequency curve. In this overlap, the melting complex viscosity-angular frequency two logarithmic curves at each temperature (T), in each curve, the angular frequency is a T times, and the melting complex viscosity is moved by 1/a T times. In addition, the correlation coefficient of formula (I) is usually 0.99 or more when the equation (I) is calculated from the values of the four points of 130°C, 150°C, 170°C, and 190°C by the method of least self-multiplication. [0022] The melting complex viscosity-angular frequency curve is measured by using a viscoelastic measuring device (for example, Rheometrics Mechanical Spectrometer RMS-800 manufactured by Rheometrics, etc.), usually with geometry: parallel plates, plate diameter: 25mm, plate spacing: 1.5~ 2mm, stress: 5%, angular frequency: 0.1~100rad/sec. In addition, the measurement was performed in a nitrogen atmosphere. It is preferable to blend an appropriate amount of antioxidant (for example, 1000 ppm) in the measurement sample in advance. [0023] The molecular weight distribution of component (a-1) is 2-5. The molecular weight distribution is the ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn). The number average molecular weight (Mn) and weight average molecular weight (Mw) are obtained by the gel permeation chromatography (GPC) method. The GPC measurement was performed under the following conditions. Based on the record of ISO16014-1, the reference line on the chromatogram is specified. (Measurement conditions) Device: HLC-8121GPC/HT (manufactured by TOSOH Co., Ltd.) GPC column: TOSOH TSKgel GMH6-HT, 7.8mm ID×300mm (manufactured by TOSOH Co., Ltd.) 3 mobile phases: o-dichlorobenzene (Wako Pure Chemical Industry Co., Ltd., special grade) Add 0.1 weight/volume BHT and use flow rate: 1mL/min. Column oven temperature: 140℃ Detection: Differential refractive index detector (RID) RID cell temperature: 140℃ Sample solution Injection volume: 300μL Concentration of sample solution: 1mg/mL GPC column calibration standard material: TOSOH standard polystyrene is prepared by dissolving 5mL o-dichlorobenzene (the same composition as the mobile phase) at room temperature with the weight in the table below.
Figure 02_image003
[0024] The melt flow rate (MFR) of the component (a-1) measured by the method A specified in JIS K 7210-1995 under the conditions of a load of 21.18N and a temperature of 190°C is preferably 0.1 to 30 g/10 minutes, and more It is preferably 0.2 to 20 g/10 minutes, and more preferably 0.3 to 10 g/10 minutes. [0025] The density of component (a-1) measured according to the method stipulated in Method A in JIS K7112-1980 is preferably 850 to 940 kg/m 3 , more preferably 880 to 930 kg/m 3 , still more preferably 915 ~925 kg/m 3 . [0026] The tensile impact strength of component (a-1) measured in accordance with ASTM D1822-68, if the density of component (a-1) is 850 kg/m 3 or more and less than 910 kg/m 3 , it is preferably 2500 kJ /m 2 or more and less than 3500kJ/m 2 , if the density of component (a-1) is 910kg/m 3 or more and less than 920 kg/m 3 , it is preferably 1800kJ/m 2 or more and less than 3000kJ/ m 2 , if the density of the component (a-1) is 920 kg/m 3 or more and less than 930 kg/m 3 , it is preferably 1500 kJ/m 2 or more and less than 2000 kJ/m 2 , if the component (a-1) The density is 930 kg/m 3 or more and less than 940 kg/m 3 , preferably 1,000 kJ/m 2 or more and less than 1500 kJ/m 2 . [0027] As the polymerization method of the component (a-1), for example, bulk polymerization, solution polymerization, slurry polymerization, gas phase polymerization, or high-pressure ion polymerization method is exemplified. The so-called bulk polymerization is a method in which liquid olefin is used as a medium for polymerization at the polymerization temperature. The so-called solution polymerization or slurry polymerization is a method of polymerization in an inert hydrocarbon solvent such as propane, butane, isobutane, pentane, hexane, heptane, and octane. The so-called gas phase polymerization is a method in which gaseous monomers are used as the medium to polymerize the gaseous monomers in the medium. These polymerization methods may be either batch type or continuous type, and may be either a single-stage type performed by a single polymerization tank or a multi-stage type performed by a polymerization device connected in series with a plurality of polymerization reaction tanks. In addition, various conditions such as polymerization temperature, polymerization pressure, monomer concentration, catalyst input amount, and polymerization time in the polymerization step may be appropriately determined. [0028] As a catalyst used in the manufacture of the component (a-1), a single-site catalyst is exemplified. The single-site catalyst is preferably a metallocene catalyst. [0029] As the metallocene catalyst, for example, the following catalysts (1) to (4), etc. are exemplified. (1) A catalyst composed of a component containing a transition metal compound having a cyclopentadiene type skeleton and a component containing an aluminoxane compound (2) A catalyst composed of a component containing the aforementioned transition metal compound and a triphenylmethane A catalyst composed of components of ionic compounds such as base borate and aniline borate. The medium (4) supports or impregnates the components described in any one of (1) to (3) in inorganic particulate carriers such as SiO 2 , Al 2 O 3 or olefin polymers such as ethylene and styrene, etc. The catalyst obtained from the particulate polymer carrier. [0030] As a manufacturing method of the component (a-1), for example, the manufacturing method described in Japanese Patent Application Laid-Open No. 4-11604 and Japanese Patent Application Laid-Open No. 2006-233207. [0031] As the component (a-1), for example, Sumikathene (registered trademark) E, Ekuseren (registered trademark) FX (all manufactured by Sumitomo Chemical Co., Ltd.), Evolue (registered trademark), Tafmer (registered trademark) (Prime Polymer Co., Ltd.), Harmorex TM , Kernel TM (manufactured by Nippon Polyethylene Co., Ltd.), Enable TM , Exceed TM (all manufactured by Exxon Mobile Chemical), ELITE TM , AFFINITY TM (manufactured by The DOW Chemical Company). [0032] Component (a-2) contains monomer units based on ethylene and at least one α-olefin based monomer unit selected from α-olefins having 4 to 20 carbon atoms, and has a fluid activation energy of 50kJ An ethylene-α-olefin copolymer with a molecular weight distribution of 5-15 and with a molecular weight distribution of 5-15 per mol or more and 90kJ/mol or less. The aforementioned resin composition may contain only one type of component (a-2), or may contain two or more types. Component (a-2) may contain only one monomer unit based on α-olefin, or may contain two or more kinds. Component (a-2) may also contain monomer units based on monomers other than ethylene, α-olefin, and unsaturated ester. Examples of α-olefins include 1-butene, 1-pentene, 1-hexene, 3-methyl-1-butene, 3,3-dimethyl-1-butene, 4-methyl- 1-pentene, 1-octene. The α-olefin is preferably an α-olefin having 4 to 8 carbon atoms, and is more preferably 1-butene, 1-hexene, 4-methyl-1-pentene, and 1-octene based on the ease of availability. Examples of component (a-2) include ethylene-1-butene copolymer, ethylene-1-hexene copolymer, ethylene-4-methyl-1-pentene copolymer, and ethylene-1-octene copolymer. , Ethylene-1-butene-1-hexene copolymer, ethylene-1-butene-4-methyl-1-pentene copolymer, ethylene-1-butene-1-octene copolymer, ethylene- The 1-hexene-1-octene copolymer is preferably an ethylene-1-hexene copolymer or an ethylene-1-butene-1-hexene copolymer. [0033] The activation energy of the flow of the component (a-2) is 50 kJ/mol or more and 90 kJ/mol or less, preferably 55 kJ/mol or more and 80 kJ/mol or less, more preferably 60 kJ/mol or more and 70 kJ/mol or less . [0034] The molecular weight distribution of the component (a-2) is 5-15, preferably 6-13, more preferably 7-11. [0035] The melt flow rate (MFR) of the component (a-2) measured by the method A specified in JIS K 7210-1995 under the conditions of a load of 21.18N and a temperature of 190°C is preferably 0.1 to 30 g/10 minutes, more It is preferably 0.2 to 20 g/10 minutes, and more preferably 0.3 to 10 g/10 minutes. [0036] The density of the component (a-2) is preferably 850 to 940 kg/cm 3 , more preferably 880 to 930 kg/cm 3 , and still more preferably 910 to 925 kg/cm 3 . The density is measured in accordance with the A method specified in JIS K7112-1980. [0037] As a manufacturing method of the component (a-2), there are exemplified the manufacturing methods described in Japanese Patent Application Publication No. 2007-269997, Japanese Patent Application Publication No. 2009-161779, and Japanese Patent Application Publication No. 2009-256661. [0038] (Ethylene-Unsaturated Ester Copolymer (Component (b))) Component (b) is a copolymer containing ethylene-based monomer units and unsaturated ester-based monomer units. Examples of monomer units based on unsaturated esters are, for example, monomer units based on α,β-unsaturated carboxylic acid alkyl esters, and monomer units based on vinyl carboxylate. The resin composition may contain only one type of component (b), or may contain two or more types. [0039] Examples of α,β-unsaturated carboxylic acid alkyl esters include methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, and butyl methacrylate. Examples of vinyl carboxylates include vinyl acetate, vinyl propionate, vinyl butyrate, and vinyl benzoate. The unsaturated ester-based monomer units are preferably methyl acrylate-based monomer units, ethyl acrylate-based monomer units, butyl acrylate-based monomer units, methyl methacrylate-based monomer units, and methyl methacrylate-based monomer units. The monomer unit of vinyl acetate. [0040] Examples of component (b) include ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-methyl methacrylate copolymer, and ethylene-ethyl methacrylate copolymer. Ester copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl propionate copolymer, ethylene-vinyl butyrate copolymer, ethylene-vinyl benzoate copolymer, preferably ethylene-methyl acrylate copolymer, Ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-vinyl acetate copolymer, more preferably ethylene-vinyl acetate copolymer. [0041] The component (b) may be modified by hydrolysis or the like in part of the monomer unit. An example of the modified ethylene-unsaturated ester copolymer is saponified ethylene vinyl acetate copolymer. [0042] Measured by method A specified in JIS K 7210-1995 under the conditions of a load of 21.18N and a temperature of 190°C. The MFR of the component (b) is preferably from 0.01 to 50 g/10 minutes, more preferably from 0.1 to 20 g/10 minutes, and still more preferably from 1.5 to 10 g/10 minutes. [0043] The content of the unsaturated ester-based monomer unit contained in the component (b) is 100 weight relative to the total weight of the ethylene-based monomer unit and the unsaturated ester-based monomer unit content contained in the component (b) % Is preferably less than 50% by weight, more preferably 40% by weight or less, still more preferably 30% by weight or less. The content of the unsaturated ester-based monomer unit contained in the component (b) is 100% by weight relative to the total weight of the ethylene-based monomer unit and the unsaturated ester-based monomer unit content contained in the component (b) It is preferably 5% by weight or more, more preferably 10% by weight or more, and still more preferably 15% by weight or more. The content of the unsaturated ester-based monomer unit contained in the component (b) is 100% by weight relative to the total weight of the ethylene-based monomer unit and the unsaturated ester-based monomer unit content contained in the component (b) It is preferably 5% by weight or more and less than 50% by weight, more preferably 10% by weight or more and 40% by weight or less, and still more preferably 15% by weight or more and 30% by weight or less. [0044] An example of a method for producing component (b) is to make ethylene and unsaturated ester in the presence of a radical generator, at 50 to 400 MPa, 100 to 300° C., in the presence or absence of a suitable solvent or chain transfer agent. High-pressure free radical polymerization of the next copolymerization. By adjusting the polymerization conditions of high-pressure radical polymerization, the average molecular weight of component (b) and the content of auxiliary monomers of component (b) can be controlled. [0045] Examples of component (b) include Evatate (registered trademark), Sumitate (registered trademark), Acryft (registered trademark) (all manufactured by Sumitomo Chemical Co., Ltd.), Evaflex (registered trademark), and Nucrel (registered trademark) , Elvaloy (registered trademark) AC (manufactured by Mitsui DuPont Poly Chemicals Co., Ltd.), Novatec (registered trademark) EVA (manufactured by Japan Polyethylene Co., Ltd.), Ultrasen (registered trademark), Melsen (registered trademark) H (TOSOH shares) Co., Ltd.), UBE polyethylene (EVA) (Ube Maruzen Polyethylene Co., Ltd.), Elvax (registered trademark), APPEEL (registered trademark) (manufactured by DU PONT DE NEMOURS AND COMPANY). [0046] In the resin composition, relative to 100% by weight of the total amount of the component (a) and the aforementioned component (b), the content of the unsaturated ester-based monomer unit contained in all polymers in the resin composition It is 11% by weight or more and 18% by weight or less. The content of unsaturated ester-based monomer units contained in all polymers in the resin composition is preferably 12% by weight or more, more preferably 13% by weight or more, preferably 18% by weight or less, more preferably 16% by weight % Or less, more preferably 15% by weight or less, particularly preferably 14% by weight or less. The content of the unsaturated ester-based monomer unit contained in all polymers in the resin composition is preferably from 12% by weight to 16% by weight, more preferably from 12% by weight to 15% by weight, particularly preferably 13% by weight or more and 14% by weight or less. The resin composition adjusts the component (a) and component (b) in the resin composition such that the content of the unsaturated ester-based monomer unit contained in all polymers in the resin composition falls within the aforementioned range The content and the content of monomer units based on unsaturated esters contained in ingredient (b). [0047] By adjusting the content of component (b) contained in all polymers in the resin composition or monomer units based on unsaturated esters, the unit interface length of the dark phase in the cross-section of the resin layer of the film can be controlled. . By making the content of monomer units based on unsaturated esters contained in all polymers in the resin composition from 11% by weight to 18% by weight, the unit interface of the dark phase in the cross-section of the resin layer of the film can be long It becomes 15.0 μm -1 or more. [0048] With respect to 100% by weight of the total amount of component (a) and component (b) contained in the resin composition, the content of component (a) is preferably 30% by weight or more and 70% by weight or less, more preferably 40% by weight % Above 60% by weight. By adjusting the content of the component (a) in the resin composition, the unit interface length of the bright phase in the cross section of the resin layer of the film can be controlled. By making the total amount of component (a) and component (b) contained in the resin composition 100% by weight, and the content of component (a) is preferably 30% by weight to 70% by weight, the resin of the film can be made The unit interface length of the bright phase in the layer section is 15.0 μm -1 or more. [0049] (Fine particles (component (c))) The fine particles contained in the resin composition (hereinafter sometimes referred to as component (c)) have an average refractive index of 1.48 or more and 1.55 or less, and the cumulative fraction of the particle size distribution on a volume basis The 50% diameter (D50) of the particles is 6μm or more and 15μm or less, and the weight change rate E calculated by the following formula (1) is less than 5% by weight, E=((GF)/F)×100 (1 ) (In formula (1), E is the weight change rate (wt%), and F is the microparticles under reduced pressure of less than 0.03MPa and dried at a temperature of 110°C until the weight loss rate per hour becomes 0.1 weight The weight (g) of the particles below %, G is the weight (g) of the particles measured in the aforementioned F under normal pressure, relative humidity of 75% and temperature of 40°C for 24 hours). The aforementioned resin composition may contain only one type of component (c), or may contain two or more types. [0050] The average refractive index of the component (c) is 1.48 or more and 1.55 or less, preferably 1.49 or more and 1.52 or less. The refractive index is measured by the minimum deflection angle method or the critical angle method. [0051] The 50% diameter (D50) of the cumulative fraction of the volume-based particle size distribution of the component (c) is 6 μm or more and 15 μm or less, preferably 6 μm or more and 9 μm or less, more preferably 6 μm or more and 8 μm or less. In this manual, the volume-based particle size distribution of component (c) is measured by the laser diffraction and scattering method. [0052] From the viewpoint of improving the transparency of the obtained film, the 90% diameter (D90) in the cumulative fraction of the volume-based particle size distribution of the component (c) is preferably 9 μm or more, more preferably 10 μm or more. From the viewpoint that the blocking of the resulting film is reduced, D90 of the component (c) is preferably 18 μm or less, more preferably 16 μm or less, still more preferably 15 μm or less, particularly preferably 14 μm or less. [0053] Component (c) is preferably selected from methyl methacrylate polymer particles, sodium calcium aluminate silicate particles, sodium aluminate silicate particles, calcined kaolin particles, calcined diatomaceous earth particles, and calcined oxidation At least one kind of fine particles selected from the group consisting of silicon fine particles, more preferably at least one kind of fine particles selected from the group consisting of methyl methacrylate polymer fine particles, sodium calcium aluminate silicate fine particles, and sodium aluminate silicate fine particles From the viewpoint of improving the transparency of the film, it is better to use sodium aluminate calcium silicate particles. [0054] From the viewpoint of the transparency and appearance of the film containing the resin composition, the content of the component (c) in the resin composition is preferably 30,000 ppm or less, more preferably 27,000 ppm or less, and still more preferably 20,000 ppm or less. Preferably, it is 17000 ppm or less. Furthermore, from the viewpoint of preventing film blocking, the content of the component (c) is preferably at least 3000 ppm, more preferably at least 5000 ppm, still more preferably at least 10000 ppm, particularly preferably at least 15000 ppm. [0055] By adjusting the average refractive index and weight change rate of component (c), the film can be controlled under the conditions of a temperature of 160°C, a time of 1 second, a sealing rod width of 10mm, and a pressure of 450kPa. The peeling performance of the adherend with a thickness of 400 μm or more and 500 μm or less made of polypropylene with a melt flow rate of 2.5 g/10 min or more and 4.0 g/10 min or less at a temperature of 159°C or more. By using the component (c) having an average refractive index of 1.48 or more and 1.55 or less, the aforementioned peeling energy of the film can be set to 60 mJ or more. [0056] The resin composition may also contain an adhesiveness-imparting resin. The content of the adhesiveness-imparting resin is preferably from 1% by weight to 20% by weight relative to 100% by weight of the total weight of the resin components contained in the resin composition. Examples of adhesiveness-imparting resins include aliphatic hydrocarbon resins, alicyclic hydrocarbon resins, aromatic hydrocarbon resins, polyterpene resins, rosins, styrene resins, and coumarin-indene resins. Examples of aliphatic hydrocarbon resins include, for example, at least one of mono- or diolefins having 4 to 5 carbon atoms such as 1-butene, isobutene, butadiene, 1,3-pentadiene, isoprene, etc. Resin obtained by polymerization of the above fractions. Examples of alicyclic hydrocarbon resins include, for example, resins obtained by cyclizing and dimerizing the diene components in the consumed C4 to C5 fraction, resins obtained by polymerizing cyclic monomers such as cyclopentadiene, and Aromatic hydrocarbon resin is a resin in which the core is hydrogenated. Examples of aromatic hydrocarbon resins include, for example, resins obtained by polymerizing at least one fraction of C8 to C10 vinyl aromatic hydrocarbons such as vinyl toluene, indene, α-methylstyrene, or the like, or A resin obtained by copolymerizing the fraction and the above-mentioned aliphatic hydrocarbon fraction. Examples of polyterpene-based resins include α-pinene polymers, β-pinene polymers, dipentene polymers, terpene-phenol copolymers, α-pinene-phenol copolymers, and hydrogenated products thereof. . Examples of rosins include gum rosin (gum rosin), wood rosin, tall oil, and other rosins and their modified products. Examples of modified products include hydrogenation, heterogeneity, dimerization, esterification, etc. By. Examples of styrenic resins include, for example, resins with a low molecular weight containing more than one monomer unit based on styrene monomers such as high-purity styrene, vinyl toluene, α-methylstyrene, isopropyl toluene, etc. polymer. [0057] The resin composition may also contain additives such as antioxidants, slip agents, antistatic agents, processability improvers, and anti-blocking agents as needed. Examples of antioxidants include, for example, 2,6-di-tertiary butyl-p-cresol (BHT), four (methylene-3-(3,5-di-tertiary butyl-4-hydroxyphenyl) ) Propionate] methane (manufactured by Cibar Special Chemicals Co., Ltd., trade name: IRGANOX 1010) or n-octadecyl-3-(4'-hydroxy-3,5'-di-tert-butylphenyl) ) Propionate (manufactured by Cibar Special Chemicals Company, trade name: IRGANOX 1076) and other phenolic stabilizers, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphate or tris(2, Phosphate stabilizers such as 4-di-tert-butylphenyl) phosphate, 6-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propoxy]- 2,4,8,10-Tetra-tert-butyldibenzo[d,f][1,3,2]dioxaphosphorine (manufactured by Sumitomo Chemical Co., Ltd., trade name: SUMILIZER GP ) And other phenolic phosphate difunctional stabilizers, etc. The amount of the antioxidant added is preferably 0.001 to 1 part by weight, more preferably 0.01 to 0.1 part by weight with respect to 100 parts by weight of the total amount of component (a) and component (b) in the composition. [0058] Examples of slip agents include erucamide, higher fatty acid amide, higher fatty acid ester, and the like. The addition amount of the slip agent is preferably 0.01 to 1 part by weight, more preferably 0.05 to 0.5 part by weight relative to 100 parts by weight of the total amount of component (a) and component (b) in the composition. Examples of antistatic agents include, for example, fatty acid glycerides having 8 to 22 carbon atoms, sorbitan acid esters, and polyethylene glycol esters. The addition amount of the antistatic agent is preferably 0.01 to 1 part by weight, more preferably 0.1 to 0.5 part by weight relative to 100 parts by weight of the total amount of component (a) and component (b) in the composition. Examples of processability improvers include fatty acid metal salts such as calcium stearate. The addition amount of the processability improver is preferably 0.01 to 1 part by weight, more preferably 0.1 to 0.5 part by weight relative to 100 parts by weight of the total amount of the component (a) and the component (b) in the composition. Examples of anti-blocking agents include, for example, silica, crystalline or amorphous aluminate silicate, clay, talc, diatomaceous earth, feldspar, kaolin, zeolite, kaolinite, wollastonite, sericite, cross-linked Acrylic resin, crosslinked polyethylene resin, crosslinked polystyrene resin, crosslinked polysiloxane resin, polyamide resin, polyester resin, etc. The addition amount of the anti-blocking agent is preferably 0.1 to 5 parts by weight, more preferably 0.3 to 3 parts by weight relative to 100 parts by weight of the total amount of component (a) and component (b) in the composition. [0059] Component (c) and various additives may be added after pre-blending component (a) and component (b) contained in the resin composition, or may be added to either component (a) or component (b) It can also be added to each, and can also be used as a master batch blended with either component (a) or component (b). [0060] An example of a manufacturing method of the resin composition is a conventional blending method. As a conventional blending method, for example, a method of dry blending each polymer and fine particles, and a method of melt blending are exemplified. As a method of dry blending, for example, a method using various blending machines such as Henschel mixer and drum mixer. Examples of the method of melt kneading include a method of using various mixers such as a single-shaft extruder, a double-shaft extruder, a Banbury mixer, and a hot roll. [0061] One embodiment of the easily peelable film includes a substrate layer and a resin layer containing the aforementioned resin composition. One surface of the easily peelable film is the substrate layer, and the other surface is the resin layer. The easily peelable film may contain a layer having a composition different from that of the substrate layer and the layer containing the aforementioned resin composition. [0062] Examples of the substrate layer include polyamide resins such as cellophane, paper, cardboard, fabric, aluminum foil, nylon 6 or nylon 66, polyethylene terephthalate, or polybutylene terephthalate. A layer made of polyester resins such as diesters, stretched polypropylene, etc. By forming a film, a resin film including a resin layer containing the aforementioned resin composition can be obtained. The resin film may be a single-layer resin film composed only of a layer containing the aforementioned resin composition, or a multilayer resin film having a layer containing the aforementioned resin composition and a layer having a composition different from the layer. A single-layer resin film composed of only a layer containing a resin composition can be produced by a blown film forming method. [0063] The so-called layer having a composition different from the layer containing the aforementioned resin composition is, for example, a layer containing an ethylene-based polymer. Examples of the aforementioned ethylene-based polymer include, for example, high-pressure process low-density polyethylene and ethylene-α-olefin copolymer. It is possible to obtain a resin film having a layer containing the aforementioned resin composition and a layer containing an ethylene-based polymer, and the layer containing the aforementioned resin composition is at least one surface layer. A resin film having a layer containing the aforementioned resin composition and a layer containing an ethylene-based polymer, and the layer containing the aforementioned resin composition as at least one surface layer can co-extrude the resin composition and the ethylene-based polymer by blowing Manufactured by forming plastic film. [0064] The easily peelable film may also be an easily peelable film having a layer containing the aforementioned resin composition and a substrate layer containing a polymer different from the ethylene-based polymer, and the layer containing the aforementioned resin composition is at least one surface layer . The easily peelable film may also have a layer containing the aforementioned resin composition, a layer containing an ethylene-based polymer, and a substrate layer containing a polymer different from the ethylene-based polymer, and the layer containing the aforementioned resin composition has at least one surface Layer of easy-to-peel film. [0065] The thickness of the resin layer of the film is 5 μm or more and 100 μm or less, preferably 10 μm or more and 80 μm or less, more preferably 15 μm or more and 50 μm or less. The thickness of the resin layer of the film is measured by thin-cutting in the thickness direction of the film using a cryomicrotome, and observing the cross-section of the obtained test piece with an optical microscope. [0066] Examples of the substrate layer include polyamide resins such as cellophane, paper, cardboard, fabric, aluminum foil, nylon 6 or nylon 66, polyethylene terephthalate, or polybutylene terephthalate. A layer made of polyester resins such as diesters, stretched polypropylene, etc. [0067] When the above-mentioned easily peelable film is an easily peelable film having a base layer containing a polymer different from an ethylene-based polymer, as an example of a method for producing the easily peelable film, for example, a layer made of only a resin composition is used. A single-layer film or a multilayer film having a layer containing a resin composition and a layer containing an ethylene-based polymer is laminated on the above-mentioned substrate. As the layer method, for example, there are dry layer method, wet layer method, and sandwich layer method. [0068] The aforementioned easily peelable film can be used as a lid for various containers. Examples of materials for the container are, for example, propylene homopolymer, propylene random copolymer, high-density polyethylene, ethylene-α-olefin copolymer, high-pressure process low-density polyethylene, polyester (PET), polyvinyl chloride (PVC) , Polystyrene (PS), Polycarbonate (PC). The easy-opening film of the present invention can be used as a lid for packaging containers for various foods, pharmaceuticals, cosmetics, and industrial products such as jelly, pudding, yogurt, tofu, instant noodles, noodles, and the like. [0069] As the propylene homopolymer used as the material of the container, for example, the homopolymer grade of Sumitomo Nobrene (registered trademark) (manufactured by Sumitomo Chemical Co., Ltd.) and the homopolymer grade of Prime Polypro (registered trademark) (Prime Polymer Co., Ltd.). Examples of propylene random copolymers used as the material of the container are random grades of Sumitomo Nobrene (registered trademark) (manufactured by Sumitomo Chemical Co., Ltd.) and random grades of Prime Polypro (registered trademark) (Prime Polymer Co., Ltd.) system). Examples of high-density polyethylene used as the material of the container are, for example, Novatec TM HD (manufactured by Japan Polyethylene Co., Ltd.), HI-ZEX (registered trademark), Evolue (registered trademark) H (all are manufactured by Prime Polymer Co., Ltd.) ). Examples of polyester used as the material of the container include Unipet (registered trademark) (manufactured by UNIPET Co., Ltd.), amorphous polyester (APET) sheet (for example, Novaclear: manufactured by Mitsubishi Chemical Co., Ltd., FR, FR-1 , FS: Both are made by Teijin Co., Ltd.). Examples of polyvinyl chloride used as the material of the container are, for example, soft polyvinyl chloride (SPVC) sheets such as Viniparu (manufactured by SANVIC Co., Ltd.), Esuviron (registered trademark) sheets (manufactured by Sekisui Molding Co., Ltd.), etc. Polyvinyl chloride (HPVC) sheet). An example of polystyrene used as the material of the container is, for example, a PS plate (manufactured by HIPS) manufactured by Sekisui Molding Co., Ltd. Examples of polycarbonate used as the material of the container are, for example, Panlite (registered trademark) (manufactured by Teijin Co., Ltd.), Yupilon (registered trademark), Novalex (registered trademark), and Zanter (registered trademark) (Mitsubishi Engineering Plastics Co., Ltd.) system). [0070] The lid made of the easily peelable film and the layer of the resin composition containing the aforementioned resin composition are brought into contact with the flange portion of the container body so that the lid and the flange portion of the container body are overlapped, by applying heat and Pressure and heat sealing can be made into sealed containers. The heat-sealing strength of the cover with the easy-peelable film with the base layer and the layer containing the resin composition, when heat-sealing containers made of various materials, is based on the fact that the sealing part will not peel off due to impact during transportation, etc. From the viewpoint of the sealability for leakage of the contents, each is preferably 5N/15mm or more, and from the viewpoint of easy peelability that can be easily opened by an adult's hand, each is preferably 20N/15mm or less. From the viewpoint of having both sealability and easy peelability, the heat sealing strength of the cover containing the aforementioned easy peeling film is preferably 5-20N/15mm. [Examples] Hereinafter, the present invention will be described in detail based on examples and comparative examples, but the present invention is not limited to these examples. [0072] (1) Raw material resins and additives The ethylene-α-olefin copolymers, ethylene-unsaturated ester copolymers, adhesiveness-imparting resins, and additives described in Examples are those described below. [0073] Component (a) LL1: Metallocene catalyst linear low-density polyethylene Sumikathene (registered trademark) EP GT140 (manufactured by Sumitomo Chemical Co., Ltd., ethylene-1-butene-1-hexene copolymer, temperature MFR at 190℃ and a load of 21.18N: 0.9g/10 minutes, density: 918kg/m 3 , Mw/Mn=8.6, Ea=69.3kJ/mol) LL2: Metallocene catalyst linear low-density polyethylene Sumikathene (Registered trademark) E FV201 (manufactured by Sumitomo Chemical Co., Ltd., ethylene-1-hexene copolymer, MFR 2.3g/10 minutes at a temperature of 190℃ and a load of 21.18N, density 916kg/m 3 , Mw/Mn=3.6 , Ea=35.8kJ/mol) Ingredient (b) OE1: Sumitate KA-30 (manufactured by Sumitomo Chemical Co., Ltd., ethylene-vinyl acetate copolymer, based on vinyl acetate monomer unit content 28% by weight, temperature 190℃ And MFR 7.0g/10 minutes under a load of 21.18N) Adhesiveness-imparting resin TA1: ALCON (registered trademark) P-140 (alicyclic saturated hydrocarbon resin, ring and ball softening point = 140°C, manufactured by Arakawa Chemical Industry Co., Ltd.) Mw=1920 g/mol) TA2: Kraton Corporation’s Clayton (registered trademark) G1653 (styrene-ethylene/butylene-styrene block copolymer SEBS, MFR 25g/10 minutes at 230℃ and 21.18N, Styrene content 30wt%) Component (c) C1: MA1010 (manufactured by Nippon Shokubai Co., Ltd., polymethyl methacrylate cross-linked particles) Average refractive index 1.51 C2: Shilton JC-70 (Mizusawa Chemical Industry Co., Ltd. Made, calcium sodium aluminate silicate ‧ hydrate particles, average refractive index: 1.50) C3: AMT-100R (manufactured by Mizusawa Chemical Industry Co., Ltd., sodium aluminate silicate particles, average refractive index: 1.50) C4: Gasil AB905 (Manufactured by PQ Corporation Co., Ltd., silica particles, average refractive index: 1.44) C5: Minbloc SC6 (manufactured by Sibelco Japan Co., Ltd., fired silica particles, average refractive index: 1.51) Antioxidant AO: Sumilizer GP (Sumilizer GP) Lubricant SA: Fatty acid amide E (manufactured by Kao Chemical Co., Ltd.) The contact method overlaps, using the heat A sealing machine (manufactured by TESTER Sangyo Co., Ltd.) was heat-sealed to obtain a sample. After the obtained sample was left at 23° C. for more than 24 hours, a test piece having a sealed portion (sealed width×seal length=10mm×15mm) was cut out in a direction at right angles to the seal width direction. Next, the sealing part of the obtained test piece was peeled off at a speed of 300 mm/min at a speed of 180° by a tensile testing machine, and the heat sealing strength per 15 mm in width was measured. Use the maximum value of the heat seal strength obtained. If the heat-sealing strength is 5-20N/15mm, it has sealing properties and easy peeling properties. [0075] <Sealing conditions> Sealing temperature: 160°C Sealing time: 1 second Sealing width: 10mm Sealing pressure: 450kPa Adhered body: Adhered body 1: Polypropylene sheet (PP) (Nobrene H501 has a sheet thickness of 0.44mm, melting point 157°C or more and 159°C or less, the melt flow rate at a temperature of 230°C and a load of 21.18N is 2.5g/10 minutes or more and 4.0g/10 minutes or less) Adherent 2: Impact-resistant polystyrene sheet (HIPS) ( Nippon Plastics Industry Co., Ltd. PS sheet thickness 0.5mm) Adhered body 3: Rigid polyvinyl chloride sheet (HPVC) (Sekisui Molding Co., Ltd. Environ sheet A-100 thickness 0.2mm) Adhered body 4: Amorphous Polyethylene terephthalate film (APET) (PET26 made by OJK Co., Ltd., thickness 0.2mm) [0076] (3) Haze is measured in accordance with ASTM 1003, and the turbidity of a blown film (thickness 30 μm) formed by the method described below is measured Turbidity (unit: %). The smaller the haze, the better the transparency. [0077] (4) Internal turbidity A blown film (thickness 30 μm) formed by the method described below was immersed in a transparent cell containing dimethyl phthalate, and the internal turbidity of the film in the immersed state was measured (unit:%). The smaller the internal haze, the better the transparency. [0078] (5) Determination of the weight change rate of component (c) Put the 100ml screw cap bottle containing component (c) in a vacuum dryer, and dry at 110°C under reduced pressure of less than 0.03MPa 3 hours. After drying, the component (c) was taken out from the dryer, and the weight measurement was quickly performed. The weight of the component (c) after drying for 3 hours is referred to as F (g). In addition, the weight loss per hour calculated from the weight of the component (c) after drying for 2 hours and the weight reduction rate per hour calculated from the aforementioned F are both 0.1% by weight or less in any component (c). After drying for 3 hours, the component (c) is placed in a constant temperature and humidity tank set at a relative humidity of 75% and a temperature of 40°C, and left to stand for 24 hours. Subsequently, the component (c) was taken out from the constant temperature and humidity tank, and the weight measurement was quickly performed. The weight of the component (c) after being held in the constant temperature and humidity tank is referred to as G (g). The F and G of each component (c) and the weight change rate E (% by weight) calculated by the following formula (1) are shown in Table 1. E=100(GF)/F (1) [0079] (6) 50% diameter (median diameter, D50) and volume of component (c) in the cumulative fraction of the particle size distribution based on the volume of component (c) The 90% diameter (D90) in the cumulative fraction of the benchmark particle size distribution. For the sample that puts the component (c) into the sodium hexametaphosphate solution and disperses it for 10 minutes with a homogenizer, use the MICROTRAC particle size analyzer (Nikki Seiki Co., Ltd.) Co., Ltd. "MT-3300EXII") irradiate laser light to obtain the intensity distribution of diffracted scattered light. The volume-based particle size distribution is obtained from the obtained intensity distribution, and the 50% diameter (median diameter, D50) and 90% diameter (D90) of the cumulative fraction of the particle size distribution are calculated. However, regarding C1, polyoxyethylene (20) was dispersed in a sorbitan monolaurate solution and measured. The D50 and D90 values of each component (c) are shown in Table 1. [0080]
Figure 02_image005
[0081] (7) Up and down adhesion (up and down BL, unit: N/m 2 ) The blown film (thickness 30μm) formed by the method described below is cut into 10cm×10cm to make the inside of the tube when the blown film is formed The manners of being closely adhered to each other are overlapped, and the state is adjusted in an oven adjusted to 40°C under a load of 400g/cm 2 for 7 days. After the condition was adjusted, a McKenzie adhesion tester (manufactured by Shimadzu Corporation) was used to measure the load required for peeling in the vertical direction at a peeling load speed of 20 g/min. The smaller the value, the better the blocking resistance. [0082] (8) Production of master batches LL1 or LL2 and additives were melt-kneaded with a Banbury kneader at 160° C. in the ratio described in Table 2, and then granulated by a granulator to produce additive master batches. [0083]
Figure 02_image007
[0084] (9) Melt flow rate of ethylene copolymer (MFR, unit: g/10 minutes) The melt flow rate was measured by the A method specified in JIS K 7210-1995 under the conditions of a load of 21.18N and a temperature of 190°C. [0085] (10) Melt flow rate of polypropylene (MFR, unit: g/10 minutes) The melt flow rate was measured by the A method specified in JIS K 7210-1995 under the conditions of a load of 21.18N and a temperature of 230°C. [0086] (11) Molecular weight distribution (Mw/Mn) Using gel permeation chromatography (GPC), the weight average molecular weight (Mw) and number average molecular weight (Mn) were measured under the following conditions (1) to (8). ) To find Mw/Mn. Based on the record of ISO16014-1, the reference line on the chromatogram is specified. (Measurement conditions) Device: HLC-8121GPC/HT (manufactured by TOSOH Co., Ltd.) GPC column: TOSOH TSKgel GMH6-HT, 7.8mm ID×300mm (manufactured by TOSOH Co., Ltd.) 3 mobile phases: o-dichlorobenzene (Wako Pure Chemical Industries Co., Ltd., special grade) Add 0.1w/V BHT and use flow rate: 1mL/min Column oven temperature: 140℃ Detection: Differential refractive index detector (RID) RID cell temperature: 140℃ Sample Solution injection volume: 300μL Concentration of sample solution: 1mg/mL GPC column calibration standard material: TOSOH standard polystyrene prepared by dissolving in 5mL o-dichlorobenzene (the same composition as the mobile phase) at room temperature with the weights in the table below .
Figure 02_image009
[0087] (12) The content of vinyl acetate-based monomer units is measured in accordance with JIS K7192. [0088] (13) TEM observation The film formed by the method described below is cut into a circle with a diameter of 1 cm. The cut film takes the base material layer as the outer side and the resin layer as the inner side. After bending, the film is cut along the line (MD direction) perpendicular to the line where the curvature becomes zero for the curved surface. Make into slices. The obtained slices are embedded in resin, and the embedded slices are cut with a cryomicrotome along the MD direction of the film. The obtained sample was dyed in RuO 4 at 60°C for 1.5 hours, then washed with water and air-dried. Subsequently, ultra-thin sections were cut from the obtained sections by a cryomicrotome to obtain sections for observation. Take the section parallel to the MD direction as the observation surface. The resin layer of the MD cross section of the obtained observation section was measured by TEM (JEM-2100F manufactured by JEOL Co., Ltd.) at a magnification of 30,000 times (6.8μm×8.8μm, and the long axis was taken to be ±25° from the MD direction) to obtain TEM image. [0089] (14) Unit interface length (unit: /μm) The obtained TEM image is subjected to smoothing processing to remove noise, and shading correction to remove periodic background. The portion of the obtained TEM image whose threshold value is 130 or more becomes white, and the portion whose threshold value is less than 130 becomes black and is binarized. In the image after the binarization process, the white part becomes the bright part phase, and the black part becomes the dark part phase. The image analysis system uses image analysis software (A-Sang-kun manufactured by Asahi Kasei Engineering Co., Ltd.). Calculate the unit interface length of the bright phase and the unit interface length of the dark phase by using the following formula. The unit interface length of the bright part phase (μm -1 ) = the total peripheral length of all the bright part images in the image (μm) / the overall area of the image (μm 2 ) the unit interface length of the black part phase (μm -1 ) = figure The total peripheral length of all the dark parts of the image (μm)/the entire area of the image (μm 2 ) [0090] (15) Peeling energy (to PP) (unit: mJ) When measuring the above (2) heat seal strength for polypropylene , Measure the peeling distance (mm) and peeling stress (N). Secondly, set the x-axis in the horizontal direction as the peeling distance (mm), and the y-axis in the vertical direction as the peeling stress (N). The point where the peeling distance is 0 mm crosses the x-axis, and the peeling stress-peeling distance curve is measured. Using the obtained peeling stress-peeling distance curve, find from the area of the part enclosed by the x-axis and the x-axis and the peeling stress-peeling distance curve through the end point of the peeling stress-peeling distance curve (the point at the end of the peeling) The peeling energy (unit: mJ). [0091] (16) Melting point of polypropylene (unit: °C) The differential scanning calorimetry curve was measured using a differential scanning calorimeter (Q100 manufactured by TA Instruments) under the following conditions, and it was obtained from the differential scanning calorimetry curve at the second heating time The melting point and peeling transfer point are determined. <Measurement conditions> Heating up (1st time): After heating up from 20°C to 230°C, hold at 230°C for 5 minutes. Cooling down: After the first heating operation, immediately after cooling down from 230°C to 40°C at 5°C/min, keep it at 40°C for 5 minutes. Temperature increase (second time): Immediately after the temperature decrease operation, the temperature was increased from 40°C to 230°C at 5°C/min. [0092] (17) Confirmation of foaming of blown film The blown film formed by the method described below was visually observed to confirm whether there is foaming. [0093] (Example 1) [Blowed film forming] LL1, OE1 and various additive master batches were mixed with the blending composition of Table 4 using a roller mixer. The obtained mixture was formed into a film using a 50mmφ extruder manufactured by PLACO Corporation, a blow molding machine with a die mouth of 125 mmφ, and a die lip opening of 2.0 mm under the conditions of 150, an extrusion rate of 25 kg/hr, a blowing ratio of 2.0, and a film thickness of 30 μm. One side of the blown film tube of the obtained film was subjected to corona discharge treatment so that the wet tension was 45 dyn/cm. The physical properties of the blown film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [Multilayer film forming] Using a coating machine manufactured by Yasui Seiki Co., Ltd., the ethyl acetate and fatty acid ester coating agent Takelac (registered trademark) A-3210 and Takenate (registered trademark) A-3 (both are Mitsui Chemicals Co., Ltd.) The mixed liquid was applied to a polyester film (manufactured by Toyobo Co., Ltd., trade name "E5102", thickness 15 μm, width 500 mm) at the following blending ratio. Subsequently, the obtained polyester film was pressed against the corona-treated surface of the film obtained above, and then heated in an oven at 40° C. for 48 hours to obtain a multilayer film. Takelac (registered trademark) A-3210/Takenate (registered trademark) A-3/ethyl acetate=12/1/32 (weight ratio) This multilayer film was used to measure the thermal peel strength. The results are shown in Table 5. [0094] (Example 2) Except that LL1, OE1 and various additive master batches were set to the blending composition shown in Table 4, a blown film and a multilayer film were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0095] (Example 3) Except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4, blown films and multilayer films were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0096] (Example 4) Except that LL1, OE1 and various additive master batches were set to the blending composition shown in Table 4, blown films and multilayer films were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0097] (Example 5) Except that LL1, OE1 and various additive master batches were set to the blending composition shown in Table 4, blown films and multilayer films were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0098] (Example 6) Except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4, blown films and multilayer films were obtained in the same manner as in Example 1. The unit interface length and peeling energy of the multilayer film are shown in Table 3. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0099] (Example 7) Except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4, blown films and multilayer films were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0100] (Example 8) Except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4, blown films and multilayer films were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. (Example 9) Except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4, a blown film and a multilayer film were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. (Example 10) Except that LL1, OE1 and various additive master batches were set to the blending composition shown in Table 4, blown films and multilayer films were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0103] (Example 11) Except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4, a blown film and a multilayer film were obtained in the same manner as in Example 1. The unit interface length and peeling energy of the multilayer film are shown in Table 3. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 11% by weight. (Example 12) Except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4, blown films and multilayer films were obtained in the same manner as in Example 1. The unit interface length and peeling energy of the multilayer film are shown in Table 3. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 17% by weight. (Example 13) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL2, OE1, and various additive master batches were set to the blending composition shown in Table 4. The unit interface length and peeling energy of the multilayer film are shown in Table 3. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0106] (Example 14) Except that LL2, OE1 and various additive master batches were set to the blending composition shown in Table 4, a blown film and a multilayer film were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0107] (Example 15) Except that LL2, OE1, and various additive master batches were set to the blending composition shown in Table 4, a blown film and a multilayer film were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. (Example 16) Except that LL1, OE1, TA1, and various additive master batches were set to the blending composition shown in Table 4, a blown film and a multilayer film were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 14% by weight. (Example 17) Except that LL1, OE1, TA2, and various additive master batches were set to the blending composition shown in Table 4, a blown film and a multilayer film were obtained in the same manner as in Example 1. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 11% by weight. [0110] (Comparative Example 1) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film is 20% by weight. [0111] (Comparative Example 2) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 8% by weight. (Comparative Example 3) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4. The unit interface length and peeling energy of the multilayer film are shown in Table 3. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. [0113] (Comparative Example 4) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 14% by weight. [0114] (Comparative Example 5) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 13% by weight. (Comparative Example 6) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film was 11% by weight. [0116] (Comparative Example 7) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4. The unit interface length and peeling energy of the multilayer film are shown in Table 3. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film is 20% by weight. [0117] (Comparative Example 8) A blown film and a multilayer film were obtained in the same manner as in Example 1, except that LL1, OE1, and various additive master batches were set to the blending composition shown in Table 4. The unit interface length and peeling energy of the multilayer film are shown in Table 3. The physical properties of blown film and multilayer film are shown in Table 5. The content of monomer units based on vinyl acetate contained in the blown film is 8% by weight. [0118]
Figure 02_image011
Figure 02_image013
(The unit of blending amount of each component described in Table 4 is% by weight). [0119]
Figure 02_image015
[0120] This patent application is based on Japanese Patent Application No. 2016-193001 (application date September 30, 2016) claiming priority, which is incorporated herein by reference in its entirety.

Claims (2)

一種薄膜，其係包含基材層與樹脂層者，且係一表面層為基材層，另一表面層為包含樹脂組成物之樹脂層的薄膜，將薄膜切出直徑1cm之圓形時，薄膜之基材層為外側，樹脂層為內側使薄膜彎曲時，沿著與對於彎曲之薄膜曲面，曲率成為零之直線成垂直之薄膜上之直線，切斷薄膜時，樹脂層剖面中之亮部相的單位界面長為15.0μm-1以上，樹脂層剖面中之暗部相的單位界面長為12.5μm-1以上，前述樹脂層剖面中之亮部相的單位界面長及暗部相的單位界面長係藉由以下方法算出，將薄膜以溫度160℃、時間1秒、密封棒寬度10mm、壓力450kPa之條件，對於由熔點為157℃以上159℃以下且熔融流動速率為2.5g/10分鐘以上且4.0g/10分鐘以下之聚丙烯所成之厚度為400μm以上且500μm以下的被黏著體進行熱密封時之剝離能為60mJ以上，且樹脂層厚度為5μm以上且100μm以下，薄膜厚度為20μm以上150μm以下，(樹脂層剖面中之亮部相的單位界面長及暗部相的單位界面長之算出方法) 使用四氧化釕(RuO4)對薄膜之樹脂層進行染色，經染色之樹脂層剖面以透過型電子顯微鏡(TEM)測定，獲得TEM圖像，所得圖像之臨限值(Threshold)為130以上之部分成為白色，臨限值未達130之部分成為黑色進行二值化處理，二值化處理後之圖像中，白色部分成為亮部相，黑色部分成為暗部相，二值化處理後之圖像中，圖像中之全部亮部相之周圍長的和除以圖像全體之面積的和所得之值設為亮部相的單位界面長，圖像中之全部暗部相之周圍長的和除以圖像全體之面積的和所得之值設為暗部相的單位界面長。 A film comprising a substrate layer and a resin layer, and one surface layer is a substrate layer, and the other surface layer is a resin layer containing a resin composition. When the film is cut into a circle with a diameter of 1 cm, The base layer of the film is on the outside, and the resin layer is on the inside. When the film is bent, it follows a straight line perpendicular to the curved surface of the film, where the curvature becomes zero. When the film is cut, the cross section of the resin layer is bright. unit length of the interphase portion 15.0μm -1 or more, the dark portion of the resin layer per unit cross section of the phase interface 12.5μm -1 or more in length, the unit length of the interface portion and a dark portion of the light in the cross section of the resin layer relative phase interface unit The length is calculated by the following method. The film is set at a temperature of 160°C, a time of 1 second, a sealing rod width of 10mm, and a pressure of 450kPa. The melting point is 157°C or more and 159°C or less and the melt flow rate is 2.5g/10 minutes or more. And the thickness of the adherend with a thickness of 400 μm or more and 500 μm or less made of polypropylene of 4.0 g/10 min or less has a peel energy of 60 mJ or more when heat-sealed, and the thickness of the resin layer is 5 μm or more and 100 μm or less, and the film thickness is 20 μm Above 150μm, (calculation method of the unit interface length of the bright phase and the unit interface length of the dark phase in the resin layer section) The resin layer of the film is dyed with ruthenium tetroxide (RuO 4 ), and the section of the dyed resin layer Measured with a transmission electron microscope (TEM) to obtain a TEM image. The part of the obtained image where the threshold value (Threshold) is above 130 becomes white, and the part where the threshold value is less than 130 becomes black for binarization. 2. In the image after the quantization process, the white part becomes the light part phase and the black part becomes the dark part phase. In the image after the binarization process, the sum of the surrounding lengths of all the bright parts in the image is divided by the whole image The value obtained by the sum of the areas is set as the unit interface length of the bright phase, and the sum of the surrounding lengths of all the dark phases in the image divided by the sum of the entire area of the image is set as the unit interface length of the dark phase. 一種蓋，其包含如請求項1之薄膜。 A cover comprising the film as claimed in claim 1.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10147672A (en) * 1996-11-19 1998-06-02 Du Pont Mitsui Polychem Co Ltd Ethylene copolymer composition and easily unsealable seal material using the same
TW200504140A (en) * 2003-05-26 2005-02-01 Mitsui Du Pont Polychemical Olefin polymer compositions and easy-peelable sealants made by using the same
CN1914098A (en) * 2004-01-29 2007-02-14 纳幕尔杜邦公司 Compositions of ethylene/vinyl acetate copolymers for heat-sealable easy opening packaging

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58120654A (en) * 1982-01-13 1983-07-18 Mitsui Petrochem Ind Ltd Ethylene-alpha-olefin copolymer composition
DE69504743T3 (en) * 1994-04-25 2003-12-24 Mitsubishi Chem Corp Resin composition for extrusion molding
JP3279987B2 (en) * 1994-04-25 2002-04-30 三菱化学株式会社 Laminate film
JP4447707B2 (en) * 1999-11-09 2010-04-07 東セロ株式会社 the film
JP4326775B2 (en) * 2002-10-11 2009-09-09 三井・デュポンポリケミカル株式会社 Ethylene copolymer composition and easy-open sealing material using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10147672A (en) * 1996-11-19 1998-06-02 Du Pont Mitsui Polychem Co Ltd Ethylene copolymer composition and easily unsealable seal material using the same
TW200504140A (en) * 2003-05-26 2005-02-01 Mitsui Du Pont Polychemical Olefin polymer compositions and easy-peelable sealants made by using the same
CN1914098A (en) * 2004-01-29 2007-02-14 纳幕尔杜邦公司 Compositions of ethylene/vinyl acetate copolymers for heat-sealable easy opening packaging

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