TW201903008A - film - Google Patents

film Download PDF

Info

Publication number
TW201903008A
TW201903008A TW107115911A TW107115911A TW201903008A TW 201903008 A TW201903008 A TW 201903008A TW 107115911 A TW107115911 A TW 107115911A TW 107115911 A TW107115911 A TW 107115911A TW 201903008 A TW201903008 A TW 201903008A
Authority
TW
Taiwan
Prior art keywords
film
weight
component
less
sealing layer
Prior art date
Application number
TW107115911A
Other languages
Chinese (zh)
Inventor
劉琛
矢野貴明
人
Original Assignee
日商住友化學股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日商住友化學股份有限公司 filed Critical 日商住友化學股份有限公司
Publication of TW201903008A publication Critical patent/TW201903008A/en

Links

Classifications

    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
    • C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L45/00—Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L65/00—Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Compositions of derivatives of such polymers

Landscapes

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

Abstract

A film comprising a base layer and a sealing layer and having a thickness of 20-150 [mu]m, the base layer being one surface layer of the film and the sealing layer being the other surface layer. The sealing layer comprises a resin composition and has a thickness of 5-100 [mu]m. The surface of the sealing layer which is a film surface has a crystallization index of 0.680-0.900. When the film-surface sealing layer is kept in contact with an adherend (X) and the film is heat-sealed to the adherend (X) under the conditions of a temperature of 160 DEG C, a time of 1 second, a sealing-bar width of 10 mm, and a pressure of 450 kPa, then some of the resin composition of the sealing layer oozes from the heat-seal part to the non-heat-seal part and solidifies to form a solidified part, the ratio of the thickness of the solidified part to the thickness of the sealing layer in the non-heat-seal part being 1.80-2.20. Adherend (X): an adherend having a thickness of 350-550 [mu]m and comprising an impact-resistant polystyrene that has a melt flow rate of 3.0-4.0 g/10 min and a Vicat softening temperature of 95-100 DEG C.

Description

薄膜film

本發明係關於薄膜及包含該薄膜之蓋。The present invention relates to a film and a cover including the film.

專利文獻1中，記載一種層合樹脂薄膜，其係具有由乙烯系共聚物與結晶化度不同之二種類乙烯-α-烯烴共聚物所構成之密封層，該乙烯系共聚物係藉由使由充氣成型薄膜成型法成形之乙烯與乙烯基烷基酯共聚合所獲得。 [先前技術文獻] [專利文獻]Patent Document 1 describes a laminated resin film having a sealing layer composed of an ethylene-based copolymer and two types of ethylene-α-olefin copolymers having different degrees of crystallinity. The ethylene-based copolymer is made by using It is obtained by copolymerizing ethylene and vinyl alkyl ester formed by inflatable film forming method. [Prior Art Literature] [Patent Literature]

[專利文獻1] 日本特開平6-212036號公報[Patent Document 1] Japanese Unexamined Patent Publication No. 6-212036

[發明之概要] [發明所欲解決之課題][Summary of the invention] [Problems to be solved by the invention]

本發明係抑制為了使薄膜表面之密封層間互相接觸而重疊時之薄膜之黏連，並提供一種在將薄膜表面之密封層於聚丙烯黏附體及聚苯乙烯黏附體上熱密封後具備密封性及易開封性之薄膜，及蓋。 [解決課題之方法]The present invention suppresses film adhesion when the sealing layers on the surface of the film are overlapped in order to make the sealing layers on the film surface contact each other, and provides a sealing property after heat sealing the sealing layer of the film on a polypropylene adherent and a polystyrene adherent And easy-opening film and lid. [Method to solve the problem]

本發明係提供下述[1]~[8]。 　　[1] 一種薄膜，其係包含基材層及密封層，且厚度為20μm以上、150μm以下之薄膜，且係薄膜之一表面層為基材層，另一表面層為密封層之薄膜，其中，密封層係包含樹脂組成物，且厚度為5μm以上、100μm以下，藉由多重反射ATR-IR法測定之薄膜表面之密封層之表面之結晶化指數[D730/D720]為0.680以上、0.900以下，於使薄膜表面之密封層與下述黏附體(X)接觸之狀態，將薄膜於下述於黏附體(X)上，以溫度160℃、時間1秒、密封桿幅度10mm、壓力450kPa之條件進行熱密封時，密封層之樹脂組成物由熱密封部向非熱密封部溶出並固化所形成之部分之厚度與非熱密封部之密封層之厚度之比為1.80以上、2.20以下。 　　黏附體(X)：由熔體流動速率為3.0g/10分鐘以上、4.0g/10分鐘以下，且菲卡軟化溫度為95℃以上、100℃以下之耐衝撃性聚苯乙烯所構成之厚度為350μm以上、550μm以下之黏附體 　　[2] 如[1]中所記載之薄膜，其中，[D730/D720]為0.680以上、0.750以下。 　　[3] 如[1]或[2]中所記載之薄膜，其中，將薄膜於黏附體(X)上，以溫度160℃、時間1秒、密封桿幅度10mm、壓力450kPa之條件熱密封時，密封層之樹脂組成物由熱密封部向非熱密封部溶出並固化所形成之部分之厚度與非熱密封部之密封層之厚度之比為1.85以上、2.20以下。 　　[4] 一種樹脂組成物，其係含有下述成分(A)、(B)及(C)之樹脂組成物，其中，相對於成分(A)、(B)及(C)之合計量100重量%， 　　樹脂組成物中之全聚合物中所含之以不飽和酯為基礎之單體單元之含量及成分(C)之含量係各自為3重量%以上、10重量%以下，2重量%以上、10重量%以下， 　　成分(A)：密度為850kg/m3 以上、940kg/m3 以下之乙烯聚合物 　　成分(B)：含以乙烯為基礎之單體單元及以不飽和酯為基礎之單體單元之乙烯-不飽和酯共聚物 　　成分(C)：脂環族飽和烴樹脂。 　　[5] 如[4]中記載之樹脂組成物，其中，依據 JIS K7210於溫度190℃、荷重21.18N之條件下所測定之成分(A)之熔體流動速率為3g/10分鐘以下。 　　[6] 如[4]或[5]中記載之樹脂組成物，其係進一步含有防黏連劑。 　　[7] 一種薄膜，其係含有包含[4]~[6]中之任一項所記載之樹脂組成物之層。 　　[8] 一種薄膜，其係含有包含[4]~[6]中之任一項所記載之樹脂組成物之層，及包含乙烯系聚合物之層之薄膜，其中， 　　薄膜所具有之2個表面層之中，至少一表面層係由[4]~[6]中記載之樹脂組成物所構成之層。 　　[9] 一種薄膜，其係含有包含[4]~[6]中之任一項所記載之樹脂組成物之層及不含乙烯系聚合物之層之薄膜，其中， 　　薄膜所具有之2個表面層之中，至少一表面層係包含[4]~[6]中記載之樹脂組成物之層。 　　[10] 一種蓋，其係包含[1]~[3]及[7]~[9]中之任一項所記載之薄膜。 [發明效果]The present invention provides the following [1] to [8]. [1] A thin film comprising a base material layer and a sealing layer and having a thickness of 20 μm or more and 150 μm or less. One surface layer of the film is a base material layer and the other surface layer is a sealing layer film. The sealing layer contains a resin composition and has a thickness of 5 μm to 100 μm. The crystallization index [D730 / D720] of the surface of the sealing layer of the film surface measured by the multiple reflection ATR-IR method is 0.680 or more and 0.900 or less. In a state where the sealing layer on the surface of the film is in contact with the adherend (X) described below, the film is placed on the adherend (X) described below at a temperature of 160 ° C. for 1 second, a width of the sealing rod of 10 mm, and a pressure of 450 kPa When heat sealing is performed under conditions, the ratio of the thickness of the resin composition of the sealing layer to the portion formed by eluting and curing from the heat-sealed portion to the non-heat-sealed portion and the thickness of the seal layer of the non-heat-sealed portion is 1.80 or more and 2.20 or less. Adhesion (X): Thickness of impact-resistant polystyrene with a melt flow rate of 3.0 g / 10 minutes or more and 4.0 g / 10 minutes or less and a Ficca softening temperature of 95 ° C or more and 100 ° C or less Adhesives of 350 μm or more and 550 μm or less [2] The film described in [1], in which [D730 / D720] is 0.680 or more and 0.750 or less. [3] The film described in [1] or [2], wherein the film is heat-sealed on the adherend (X) under the conditions of a temperature of 160 ° C., a time of 1 second, a width of a sealing rod of 10 mm, and a pressure of 450 kPa The ratio of the thickness of the resin composition of the sealing layer from the heat-sealed portion to the non-heat-sealed portion and solidified to the thickness of the non-heat-sealed portion of the sealing layer is 1.85 to 2.20. [4] A resin composition which is a resin composition containing the following components (A), (B), and (C), wherein the total amount of the components (A), (B), and (C) is 100 % By weight, the content of the unsaturated ester-based monomer unit and the content of the component (C) contained in the all polymer in the resin composition are each 3% by weight or more, 10% by weight or less, and 2% by weight Above, 10% by weight, component (A): ethylene polymer component (B) with a density of 850 kg / m 3 or more and 940 kg / m 3 or less: containing ethylene-based monomer units and unsaturated esters as the basis The ethylene-unsaturated ester copolymer component (C) of the monomer unit: an alicyclic saturated hydrocarbon resin. [5] The resin composition as described in [4], wherein the melt flow rate of the component (A) measured in accordance with JIS K7210 at a temperature of 190 ° C and a load of 21.18 N is 3 g / 10 minutes or less. [6] The resin composition according to [4] or [5], further comprising an anti-blocking agent. [7] A film comprising a layer containing the resin composition according to any one of [4] to [6]. [8] A film comprising a layer including the resin composition according to any one of [4] to [6], and a layer including an ethylene-based polymer, wherein the film has two Among the surface layers, at least one surface layer is a layer composed of the resin composition described in [4] to [6]. [9] A film comprising a layer containing the resin composition according to any one of [4] to [6] and a layer containing no vinyl polymer, wherein two of the films have Among the surface layers, at least one surface layer is a layer containing the resin composition described in [4] to [6]. [10] A cover comprising the film according to any one of [1] to [3] and [7] to [9]. [Inventive effect]

根據本發明，可抑制為了使薄膜表面之密封層間互相接觸而重疊之薄膜間之黏連，並可提供將薄膜表面之密封層熱密封於聚丙烯黏附體及聚苯乙烯黏附體後，具有密封性及易開封性之易開封薄膜及蓋。According to the present invention, it is possible to suppress the adhesion between the films that are overlapped so that the sealing layers on the film surface are in contact with each other, and it is possible to provide a seal after sealing the sealing layer on the film surface to the polypropylene adherent and the polystyrene adherent. And easy-opening film and lid.

於本說明書中，密度係進行JIS K6760-1995中記載之退火後，根據JIS K7112-1980中所規定之方法，以A法所測定之值。於本說明書中，熔體流動速率(以下，亦記載為MFR)係依據JIS K7210以溫度190℃、荷重21.18N之條件進行測定之值。In this specification, the density is the value measured by the A method after the annealing described in JIS K6760-1995, and according to the method prescribed in JIS K7112-1980. In this specification, the melt flow rate (hereinafter also referred to as MFR) is a value measured under the conditions of a temperature of 190 ° C and a load of 21.18N in accordance with JIS K7210.

本發明之薄膜係包含基材層與密封層之薄膜。本發明之薄膜係易開封薄膜。The film of the present invention is a film including a substrate layer and a sealing layer. The film of the present invention is an easy-opening film.

薄膜表面之密封層之表面之結晶化指數(以下，亦記載為[D730/D720])，係藉由以下之方法測定。 　　藉由多重反射ATR-IR法測定薄膜表面之密封層之紅外線吸收光譜。於經測定之紅外線吸收光譜之725cm-1 以上、735cm-1 以下之範圍中，將自基線起高度最大之峰值之高度作為D730。於經測定之紅外線吸收光譜之715cm-1 以上、未滿725cm-1 之範圍中，將自基線起高度最大之峰值之高度作為D720。藉由將D730除以D720，可求得薄膜表面之密封層表面之結晶化指數。 　　於715cm-1 以上、未滿725cm-1 之區域中，高度為最大之峰值，係源自密封層中所包含之樹脂組成物之結晶成分及非晶成分之峰值。於725cm-1 以上、735cm-1 以下之區域中，高度為最大之峰值，係源自密封層中所包含之樹脂組成物之結晶成分之峰值。 　　由於D730/D720之值越小，薄膜表面之密封層中所包含之樹脂組成物之非晶成分越多，因薄膜表面之密封層發黏，故為了使薄膜表面之密封層間互相接觸而將其重疊之際，很容易會發生薄膜表面之密封層間之黏連。The crystallization index of the surface of the sealing layer on the film surface (hereinafter, also referred to as [D730 / D720]) was measured by the following method. The infrared absorption spectrum of the sealing layer on the surface of the film was measured by the multiple reflection ATR-IR method. In the range of 725 cm -1 to 735 cm -1 of the measured infrared absorption spectrum, the height of the peak having the highest height from the baseline was taken as D730. In the range of 715 cm -1 or more and less than 725 cm -1 of the measured infrared absorption spectrum, the height of the peak having the highest height from the baseline was taken as D720. By dividing D730 by D720, the crystallization index of the surface of the sealing layer on the film surface can be obtained. In a region of 715 cm -1 or more and less than 725 cm -1 , the peak value of the maximum height is a peak value derived from the crystalline component and the amorphous component of the resin composition contained in the sealing layer. In a region of 725 cm -1 or more and 735 cm -1 or less, a peak having a maximum height is a peak derived from a crystal component of a resin composition included in the sealing layer. Since the smaller the value of D730 / D720, the more the amorphous component of the resin composition contained in the sealing layer on the film surface, the sealing layer on the film surface is sticky, so in order to make the sealing layers on the film surface contact each other, When overlapping, adhesion between the sealing layers on the film surface is likely to occur.

D730/D720之值係0.690以上為佳，0.700以上為較佳。D730/D720之值未滿0.680時，很容易產生密封層間之黏連。 　　D730/D720之值係0.850以下為佳，0.800以下為較佳。D730/D720之值超過0.900時，經熱密封之薄膜之密閉性有低下的可能性。 　　D730/D720之值係0.690以上、0.850以下為佳，0.700以上、0.800以下為較佳。The value of D730 / D720 is preferably 0.690 or more, and more preferably 0.700 or more. When the value of D730 / D720 is less than 0.680, it is easy to produce adhesion between sealing layers. The value of D730 / D720 is preferably 0.850 or less, and more preferably 0.800 or less. When the value of D730 / D720 exceeds 0.900, the tightness of the heat-sealed film may be reduced. The value of D730 / D720 is preferably 0.690 or more and 0.850 or less, and more preferably 0.700 or more and 0.800 or less.

「聚積(Poly-Ball)」係指將薄膜與黏附體進行熱密封之際，密封層之樹脂組成物由熱密封部不斷地向非熱密封部溶出，藉由於熱密封部附近固化而形成之部位，其係比非熱密封部之密封層之厚度更大的部位。「聚積」之厚度越厚，熱密封強度則變得越高。"Poly-Ball" means that when the film and the adherend are heat-sealed, the resin composition of the sealing layer continuously dissolves from the heat-sealed portion to the non-heat-sealed portion, and is formed by curing near the heat-sealed portion. The portion is a portion having a larger thickness than the sealing layer of the non-heat-sealed portion. The thicker the "accumulation", the higher the heat seal strength.

於使薄膜表面之密封層與下述黏附體(X)接觸之狀態，將薄膜於黏附體(X)上以溫度160℃、時間1秒、密封桿幅度10mm、壓力450kPa之條件，進行熱密封，並獲得樣品。將所獲得之樣品以冷凍切片機，平行於熱密封寬度，於薄膜之厚度方向切斷，並獲得試驗片。將所獲得之試驗片之切斷面作為觀察面。藉由將觀察面以位相差顯微鏡進行測定以獲得圖像。使用所獲得之圖像來測定聚積之厚度(以下，亦稱為T1 )，及，非熱密封部之密封層之厚度(以下，亦稱為T0 )。 　　黏附體(X)：由熔體流動速率為3.0g/10分鐘以上、4.0g/10分鐘以下，且菲卡軟化溫度為95℃以上、100℃以下之耐衝撃性聚苯乙烯所構成之厚度為350μm以上、550μm以下之黏附體。 　　於本說明書中所謂「耐衝撃性聚苯乙烯」，係夏比衝撃強度為9~13kJ/m2 之耐衝撃性聚苯乙烯。夏比衝撃強度係依循JIS K7111進行測定。In a state where the sealing layer on the surface of the film is in contact with the following adherend (X), the film is heat-sealed on the adherend (X) at a temperature of 160 ° C, a time of 1 second, a width of the sealing rod of 10 mm, and a pressure of 450 kPa. And obtain samples. The obtained sample was cut with a freezing microtome parallel to the heat-sealing width in the thickness direction of the film, and a test piece was obtained. The cut surface of the obtained test piece was used as an observation surface. An image was obtained by measuring the observation surface with a phase-contrast microscope. The obtained image was used to measure the accumulated thickness (hereinafter, also referred to as T 1 ) and the thickness of the sealing layer (hereinafter, also referred to as T 0 ) of the non-heat-sealed portion. Adhesion (X): Thickness of impact-resistant polystyrene with a melt flow rate of 3.0 g / 10 minutes or more and 4.0 g / 10 minutes or less and a Ficca softening temperature of 95 ° C or more and 100 ° C or less It is an adherend of 350 μm or more and 550 μm or less. The "impact-resistant polystyrene" referred to in this specification is a high-impact polystyrene having a Charpy impact strength of 9 to 13 kJ / m 2 . Charpy impact strength is measured in accordance with JIS K7111.

所謂非熱密封部，係指薄膜表面之密封層與黏附體(X)未黏著在一起之部分。T0 為非熱密封部之薄膜表面之密封層之厚度。 　　T1 係藉由以下之方法求得。 　　(1)將密封層與黏附體之黏著部的端點作為P1 。 　　(2)求得密封層與黏附體以外之層之邊界線的切線L與P1 間的最短距離。 　　(3)藉由(2)所求得之距離之中，距離最短，且比非熱密封部之密封層之厚度更大者作為T1 。The so-called non-heat-sealed portion refers to a portion where the sealing layer on the film surface and the adherend (X) are not adhered together. T 0 is the thickness of the sealing layer on the film surface of the non-heat-sealed portion. T 1 is obtained by the following method. (1) Let P 1 be the end point of the adhesion portion between the sealing layer and the adherend. (2) Find the shortest distance between the tangent line L and P 1 of the boundary line between the sealing layer and the layer other than the adherend. (3) Among the distances obtained in (2), the shortest distance is greater than the thickness of the sealing layer of the non-heat-sealed portion as T 1 .

聚積之厚度與非熱密封部之密封層之厚度之比(以下，亦記載為T1 /T0 )，係1.83以上、2.20以下為佳，1.85以上、2.18以下為較佳。 　　T1 /T0 未滿1.80時，熱密封時之薄膜之密封性降低。The ratio of the accumulated thickness to the thickness of the sealing layer of the non-heat-sealed portion (hereinafter also referred to as T 1 / T 0 ) is preferably 1.83 or more and 2.20 or less, more preferably 1.85 or more and 2.18 or less. When T 1 / T 0 is less than 1.80, the sealing property of the film during heat sealing is reduced.

薄膜之厚度係25μm以上、120μm以下為佳，30μm以上、100μm以下為較佳。薄膜之厚度係使用冷凍切片機於薄膜之厚度方向薄切，藉由將所獲得之試驗片之斷面以光學顯微鏡觀察來測定。The thickness of the film is preferably 25 μm or more and 120 μm or less, and more preferably 30 μm or more and 100 μm or less. The thickness of the film was thinly cut in the thickness direction of the film using a freezing microtome, and the cross section of the obtained test piece was measured by observation with an optical microscope.

(密封層) 　　薄膜之密封層係，例如，含有含成分(A)、(B)及(C)之樹脂組成物。 　　成分(A)：密度為850kg/m3 以上、940kg/m3 以下之乙烯聚合物 　　成分(B)：含以乙烯為基礎之單體單元及以不飽和酯為基礎之單體單元之乙烯-不飽和酯共聚物 　　成分(C)：脂環族飽和烴樹脂 　　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)、(B)及(C)之含量之合計係70重量%以上為佳，80重量%以上為較佳，90重量%以上為更佳，95重量%以上為特佳。(Sealing layer) The sealing layer of the film contains, for example, a resin composition containing the components (A), (B), and (C). Ingredient (A): ethylene polymer with a density of 850 kg / m 3 or more and 940 kg / m 3 or less (B): ethylene containing monomer units based on ethylene and monomer units based on unsaturated esters- Unsaturated ester copolymer component (C): 100% by weight of the total weight of the alicyclic saturated hydrocarbon resin relative to the resin component contained in the resin composition, and the total content of the components (A), (B), and (C) It is preferably 70% by weight or more, more preferably 80% by weight or more, more preferably 90% by weight or more, and particularly preferably 95% by weight or more.

＜成分(A)＞ 　　成分(A)之密度，係較佳為880~930kg/m3 ，更佳為910~928kg/m3 。 　　成分(A)係實質上不含有以不飽和酯為基礎之單體單元。成分(A)中之以不飽和酯為基礎之單體單元之含量係以未滿5重量%為佳，未滿2重量%為較佳。成分(A)係實質上不含有以脂環族飽和烴為基礎之單體單元。成分(A)中之以脂環族飽和烴為基礎之單體單元之含量係以5重量%以下為佳，未滿2重量%以下係較佳。<Component (A)> The density of the component (A) is preferably 880 to 930 kg / m 3 , and more preferably 910 to 928 kg / m 3 . The component (A) contains substantially no monomer unit based on an unsaturated ester. The content of the unsaturated ester-based monomer unit in the component (A) is preferably less than 5% by weight, and more preferably less than 2% by weight. Component (A) is substantially free of a monomer unit based on an alicyclic saturated hydrocarbon. The content of the monomer unit based on the alicyclic saturated hydrocarbon in the component (A) is preferably 5% by weight or less, and preferably less than 2% by weight.

成分(A)之MFR，係較佳為0.1~30g/10分鐘，更佳為0.2~15g/10分鐘，更佳為0.3~3g/10分鐘。The MFR of the component (A) is preferably 0.1 to 30 g / 10 minutes, more preferably 0.2 to 15 g / 10 minutes, and even more preferably 0.3 to 3 g / 10 minutes.

作為成分(A)，可舉出密度為850kg/m3 以上、940kg/m3 以下之高壓法低密度聚乙烯(以下，亦記載為「成分(A-1)」)，及密度為850kg/m3 以上、940kg/m3 以下之乙烯-α-烯烴共聚物(以下，亦記載為「成分(A-2)」)。 　　樹脂組成物係可僅含有1種成分(A)，亦可含有2種以上。樹脂組成物係可僅含有1種成分(A-2)，亦可含有2種以上。樹脂組成物中可僅含有成分(A-1)，亦可僅含有成分(A-2)，亦可同時含有成分(A-1)及成分(A-2)。Examples of the component (A) include a high-pressure process low-density polyethylene having a density of 850 kg / m 3 or more and 940 kg / m 3 or less (hereinafter, also referred to as "component (A-1)") and a density of 850 kg / An ethylene-α-olefin copolymer (hereinafter, also referred to as "component (A-2)") of m 3 or more and 940 kg / m 3 or less. The resin composition may contain only one component (A), or may contain two or more components. The resin composition may contain only one component (A-2) or two or more components. The resin composition may contain only the component (A-1), only the component (A-2), or both the component (A-1) and the component (A-2).

所謂高壓法低密度聚乙烯，係指藉由高壓自由基聚合法所製造之乙烯聚合物。作為高壓法低密度聚乙烯之製造方法，可舉出於耐壓聚合反應器中，將氧或有機過酸化物作為聚合起始劑，於1000~2500氣壓之壓力下，以溫度150~300℃之條件，將乙烯連續性地聚合之方法。The so-called high-pressure low-density polyethylene refers to an ethylene polymer produced by a high-pressure radical polymerization method. As a method for producing a high-pressure low-density polyethylene, an oxygen or organic peracid compound can be used as a polymerization initiator in a pressure-resistant polymerization reactor at a pressure of 1000 to 2500 at a temperature of 150 to 300 ° C. As a condition, a method of continuously polymerizing ethylene.

成分(A-1)之MFR，係較佳為0.1~30g/10分鐘，更佳為0.2~15g/10分鐘，更佳為0.3~3g/10分鐘。The MFR of the component (A-1) is preferably 0.1 to 30 g / 10 minutes, more preferably 0.2 to 15 g / 10 minutes, and even more preferably 0.3 to 3 g / 10 minutes.

成分(A-1)之密度，係較佳為910~930 kg/m3 ，更佳為915~928kg/m3 ，更佳為920~925kg/m3 。Component (A-1) the density, based preferably 910 ~ 930 kg / m 3, more preferably 915 ~ 928kg / m 3, more preferably 920 ~ 925kg / m 3.

成分(A-2)係含以乙烯為基礎之單體單元及碳原子數3以上之以α-烯烴為基礎之單體單元之共聚物。成分(A-2)較佳係含有以乙烯為基礎之單體單元，及以由碳原子數4~20之α-烯烴所選出之至少1種之單體為基礎之單體單元之共聚物。The component (A-2) is a copolymer containing an ethylene-based monomer unit and an α-olefin-based monomer unit having 3 or more carbon atoms. The component (A-2) is preferably a copolymer containing monomer units based on ethylene and monomer units based on at least one monomer selected from α-olefins having 4 to 20 carbon atoms. .

作為α-烯烴，可舉出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-烯烴係較佳為碳原子數4~8之α-烯烴，從入手的容易度來看，更佳為1-丁烯、1-己烯、4-甲基-1-戊烯、1-辛烯。 　　成分(A-2)係可僅含有1種以α-烯烴為基礎之單體單元，亦可含有2種以上。Examples of the α-olefin include 1-butene, 1-pentene, 1-hexene, 3-methyl-1-butene, 3,3-dimethyl-1-butene, and 4-methyl -1-pentene, 1-octene. The α-olefin is preferably an α-olefin having 4 to 8 carbon atoms. From the viewpoint of ease of introduction, 1-butene, 1-hexene, 4-methyl-1-pentene, 1 -Octene. The hydrazone component (A-2) may contain only one kind of monomer unit based on an α-olefin, or may contain two or more kinds.

成分(A-2)亦可含有以乙烯及α-烯烴之單體為基礎之單體單元。作為乙烯及α-烯烴以外之單體，可舉出丁二烯或異戊二烯等之共軛二烯、1,4-戊二烯等之非共軛二烯、丙烯酸，及甲基丙烯酸。The component (A-2) may contain a monomer unit based on a monomer of ethylene and an α-olefin. Examples of monomers other than ethylene and α-olefins include conjugated dienes such as butadiene and isoprene, non-conjugated dienes such as 1,4-pentadiene, acrylic acid, and methacrylic acid. .

成分(A-2)中之以乙烯為基礎之單體單元之含量，係相對於成分(A-2)的總重量100重量%，較佳為80~97重量%。以α-烯烴為基礎之單體單元之含量係相對於成分(A-2)的總重量100重量%，較佳為3~20重量%。The content of the ethylene-based monomer unit in the component (A-2) is 100% by weight relative to the total weight of the component (A-2), and preferably 80 to 97% by weight. The content of the α-olefin-based monomer unit is 100% by weight with respect to the total weight of the component (A-2), and preferably 3 to 20% by weight.

作為成分(A-2)，可舉出乙烯-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、及乙烯-1-己烯-1-辛烯共聚物，較佳為乙烯-1-己烯共聚物、乙烯-1-丁烯-1-己烯共聚物。Examples of the component (A-2) include an ethylene-1-butene copolymer, an ethylene-1-hexene copolymer, an ethylene-4-methyl-1-pentene copolymer, and an ethylene-1-octene copolymer. Compounds, ethylene-1-butene-1-hexene copolymer, ethylene-1-butene-4-methyl-1-pentene copolymer, ethylene-1-butene-1-octene copolymer, and The ethylene-1-hexene-1-octene copolymer is preferably an ethylene-1-hexene copolymer or an ethylene-1-butene-1-hexene copolymer.

成分(A-2)之MFR，係較佳為0.1~30g/10分鐘，更佳為0.2~15g/10分鐘，更佳為0.3~3g/10分鐘。The MFR of the component (A-2) is preferably 0.1 to 30 g / 10 minutes, more preferably 0.2 to 15 g / 10 minutes, and even more preferably 0.3 to 3 g / 10 minutes.

成分(A-2)之密度，係較佳為880~930 kg/m3 ，更佳為910~925kg/m3 。The density of the component (A-2) is preferably 880 to 930 kg / m 3 , and more preferably 910 to 925 kg / m 3 .

作為成分(A-2)之聚合方法，可舉出塊狀聚合、溶液聚合、漿體聚合、氣相聚合，及高壓離子聚合法。所謂塊狀聚合，係指於聚合溫度下，將液狀之烯烴作為介質進行聚合之方法。所謂溶液聚合或漿體聚合，係指於丙烷、丁烷、異丁烷、戊烷、己烷、庚烷、辛烷等之非活性烴溶媒中進行聚合之方法。所謂氣相聚合，係指將氣體狀態之單體作為介質，於該介質中將氣體狀態之單體聚合之方法。此等之聚合方法，可為分批式及連續式中之任一種，又，亦可為於單一之聚合槽中進行之單段式及於複數聚合反應槽以直列連結之聚合裝置中進行之多段式中之任一種。聚合步驟中之聚合溫度、聚合壓力、單體濃度、觸媒投入量、聚合時間等之聚合條件，可適當地決定。Examples of the polymerization method of the component (A-2) include a bulk polymerization, a solution polymerization, a slurry polymerization, a gas phase polymerization, and a high-pressure ion polymerization method. The so-called bulk polymerization refers to a method of polymerizing a liquid olefin as a medium at a polymerization temperature. The so-called solution polymerization or slurry polymerization refers to a method of polymerization in an inactive hydrocarbon solvent such as propane, butane, isobutane, pentane, hexane, heptane, octane, and the like. The so-called gas phase polymerization refers to a method in which a monomer in a gas state is used as a medium, and a monomer in a gas state is polymerized in the medium. These polymerization methods may be any of batch type and continuous type, and also may be performed in a single stage in a single polymerization tank and in a polymerization apparatus in which a plurality of polymerization reaction tanks are connected in series. Either of the polysegments. Polymerization conditions such as polymerization temperature, polymerization pressure, monomer concentration, catalyst input amount, and polymerization time in the polymerization step can be appropriately determined.

作為成分(A-2)之製造中所使用之觸媒，係可舉出齊格勒-納塔觸媒或單點觸媒。Examples of the catalyst used in the production of the component (A-2) include Ziegler-Natta catalysts and single-point catalysts.

作為成分(A-2)之製造方法，係可舉出日本特開平4-11604、日本特開2006-233207、日本特開 2007-269997、日本特開2009-161779、日本特開 2009-256661中所記載之製造方法。As a method for producing the component (A-2), Japanese Patent Application Laid-Open No. 4-11604, Japanese Patent Application No. 2006-233207, Japanese Patent Application No. 2007-269997, Japanese Patent Application No. 2009-161779, and Japanese Patent Application No. 2009-256661 can be mentioned. The manufacturing method described.

作為成分(A-2)，可舉出SUMIKATHENE(註冊商標)EP、SUMIKATHENE (註冊商標)E、Excellen(註冊商標)GMH、Excellen(註冊商標)FX(皆為住友化學股份公司製)、EVOLUE(註冊商標)、Tafmer(註冊商標)(Prime Polymer Co., Ltd.製)、Harmorex(註冊商標)、Kernel(註冊商標)(日本聚乙烯股份公司製)、Enable(註冊商標)、Exceed(註冊商標)(皆為ExxonMobil Chemical製)、ELITE (註冊商標)、AFFINITY(註冊商標)(The DOW Chemical Company製)。Examples of the component (A-2) include SUMIKATHENE (registered trademark) EP, SUMIKATHENE (registered trademark) E, Excellen (registered trademark) GMH, Excellen (registered trademark) FX (all manufactured by Sumitomo Chemical Co., Ltd.), and EVOLUE ( (Registered trademark), Tafmer (registered trademark) (made by Prime Polymer Co., Ltd.), Harmorex (registered trademark), Kernel (registered trademark) (made by Japan Polyethylene Corporation), Enable (registered trademark), Exceed (registered trademark) ) (All manufactured by ExxonMobil Chemical), ELITE (registered trademark), AFFINITY (registered trademark) (made by The DOW Chemical Company).

＜成分(B)＞ 　　作為以不飽和酯為基礎之單體單元，可舉出以α,β-不飽和羧酸烷基酯為基礎之單體單元、以羧酸乙烯酯為基礎之單體單元。 　　成分(B)係實質上不含有以脂環族飽和烴為基礎之單體單元。成分(B)中之以脂環族飽和烴為基礎之單體單元之含量係5重量%以下為佳，3重量%以下為較佳。 　　樹脂組成物可僅含有1種成分(B)，亦可含有2種以上。<Component (B)> As the monomer unit based on an unsaturated ester, a monomer unit based on an α, β-unsaturated carboxylic acid alkyl ester and a monomer based on a vinyl carboxylate may be mentioned. unit. The hydrazone component (B) does not substantially contain a monomer unit based on an alicyclic saturated hydrocarbon. The content of the alicyclic saturated hydrocarbon-based monomer unit in the component (B) is preferably 5% by weight or less, and more preferably 3% by weight or less. The resin composition may contain only one component (B), or may contain two or more components.

作為α,β-不飽和羧酸烷基酯，可舉出丙烯酸甲酯、乙基丙烯酸酯、丁基丙烯酸酯、甲基丙烯酸甲酯、乙基甲基丙烯酸酯、及丁基甲基丙烯酸酯。 　　作為羧酸乙烯酯，可舉出乙酸乙烯酯、丙酸乙烯酯、丁酸乙烯酯、及安息香酸乙烯酯。 　　以不飽和酯為基礎之單體單元，係較佳為、丙烯酸甲酯為基礎之單體單元、乙基丙烯酸酯為基礎之單體單元、丁基丙烯酸酯為基礎之單體單元、甲基丙烯酸甲酯為基礎之單體單元、及乙酸乙烯酯為基礎之單體單元。Examples of the α, β-unsaturated carboxylic acid alkyl ester include methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, and butyl methacrylate. Examples of vinyl carboxylate include vinyl acetate, vinyl propionate, vinyl butyrate, and vinyl benzoate. Monomer units based on unsaturated esters are preferably monomer units based on methyl acrylate, monomer units based on ethyl acrylate, monomer units based on butyl acrylate, methyl Methyl acrylate-based monomer units and vinyl acetate-based monomer units.

作為成分(B)，係可舉出乙烯-丙烯酸甲酯共聚物、乙烯-乙基丙烯酸酯共聚物、乙烯-丁基丙烯酸酯共聚物、乙烯-甲基丙烯酸甲酯共聚物、乙烯-乙基甲基丙烯酸酯共聚物、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、及乙烯-安息香酸乙烯酯共聚物，較佳為乙烯-丙烯酸甲酯共聚物、乙烯-乙基丙烯酸酯共聚物、乙烯-丁基丙烯酸酯共聚物、乙烯-甲基丙烯酸甲酯共聚物、乙烯-乙酸乙烯酯共聚物，更佳為乙烯-乙酸乙烯酯共聚物。Examples of the component (B) include ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-methyl methacrylate copolymer, and ethylene-ethyl Methacrylate copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl propionate copolymer, ethylene-vinyl butyrate copolymer, and ethylene-vinyl benzoate copolymer, preferably ethylene-methacrylate Ester copolymer, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-vinyl acetate copolymer, more preferably ethylene-vinyl acetate copolymer .

成分(B)之單體單元的一部分亦可藉由水解等進行改質。作為經改質之乙烯-不飽和酯共聚物的例子，係可舉出皂化乙烯-乙酸乙烯酯共聚物。A part of the monomer unit of the component (B) may be modified by hydrolysis or the like. Examples of the modified ethylene-unsaturated ester copolymer include a saponified ethylene-vinyl acetate copolymer.

成分(B)之MFR，係較佳為0.01~50g/10分鐘，更佳為0.1~20g/分鐘，更佳為1.5~10g/10分鐘。The MFR of the component (B) is preferably 0.01 to 50 g / 10 minutes, more preferably 0.1 to 20 g / minutes, and even more preferably 1.5 to 10 g / 10 minutes.

成分(B)所含之以不飽和酯為基礎之單體單元之含量之上限，係相對將成分(B)所含之以乙烯為基礎之單體單元與以不飽和酯為基礎之單體單元之合計重量作為100重量%，較佳為50重量%，更佳為40重量%，更佳為30重量%。成分(B)所含之以不飽和酯為基礎之單體單元之含量(重量%)之下限，係較佳為5重量%，更佳為10重量%，更佳為15重量%。成分(B)所含之以不飽和酯為基礎之單體單元之含量(重量%)係5重量%以上、未滿50重量%，10重量%以上、40重量%以下為較佳，15重量%以上、30重量%以下更佳。The upper limit of the content of the unsaturated ester-based monomer unit contained in the component (B) is a relative comparison between the ethylene-based monomer unit and the unsaturated ester-based monomer contained in the component (B) The total weight of the units is 100% by weight, preferably 50% by weight, more preferably 40% by weight, and even more preferably 30% by weight. The lower limit of the content (% by weight) of the unsaturated ester-based monomer units contained in the component (B) is preferably 5% by weight, more preferably 10% by weight, and even more preferably 15% by weight. The content (% by weight) of the unsaturated ester-based monomer units contained in the component (B) is 5 wt% or more and less than 50 wt%, 10 wt% or more and 40 wt% or less is preferred, and 15 wt% It is more preferably at least 30% by weight.

作為成分(B)之製造方法，係可舉出使乙烯及不飽和酯於自由基產生劑的存在下，於50~400MPa、100~300℃以適當的溶媒或鏈轉移劑的存在或不存在下共聚合之高壓自由基聚合法。藉由高壓自由基聚合的聚合條件，可控制成分(B)的平均分子量、成分(B)中的不飽和酯之含量等。As a method for producing component (B), the presence or absence of ethylene and an unsaturated ester in the presence of a radical generator at 50 to 400 MPa and 100 to 300 ° C. with an appropriate solvent or a chain transfer agent may be mentioned. Copolymerization by high pressure radical polymerization. The polymerization conditions of the high-pressure radical polymerization can control the average molecular weight of the component (B), the content of the unsaturated ester in the component (B), and the like.

作為成分(B)的例子，可舉出EVERTATE(註冊商標)、SUMITATE(註冊商標)、Acryft(註冊商標)(皆為住友化學股份公司製)、EVAFLEX(註冊商標)、NUCREL (註冊商標)、Elvaloy(註冊商標)AC(Du Pont-Mitsui Polychemicals Co., Ltd.製)、NOVATEC(註冊商標)EVA(日本聚乙烯股份公司製)、ULTRATHENE(註冊商標)、Mersen(註冊商標)H(TOSOH CORPORATION製)、UBE聚乙烯(EVA)(Ube-Maruzen Polyethlene Co,Ltd.)、Elvax(註冊商標)、APPEEL(註冊商標)(DU PONT DE NEMOURS AND COMPANY製)。Examples of the component (B) include EVTATE (registered trademark), SUMITATE (registered trademark), Acryft (registered trademark) (all manufactured by Sumitomo Chemical Co., Ltd.), EVAFLEX (registered trademark), NUCREL (registered trademark), Elvaloy (registered trademark) AC (manufactured by Du Pont-Mitsui Polychemicals Co., Ltd.), NOVATEC (registered trademark) EVA (manufactured by Japan Polyethylene Corporation), ULTRATHENE (registered trademark), Mersen (registered trademark) H (TOSOH CORPORATION (Manufactured), UBE polyethylene (EVA) (Ube-Maruzen Polyethlene Co, Ltd.), Elvax (registered trademark), APPEEL (registered trademark) (manufactured by DU PONT DE NEMOURS AND COMPANY).

＜成分(C)＞ 　　成分(C)係亦可含有脂環族飽和烴以外之單體為基礎之單體單元。作為脂環族飽和烴以外之單體，可舉出芳香族烴、脂環族不飽和烴。相對於成分(C)所含有之單體單元之總數100%，以脂環族飽和烴為基礎之單體單元數較佳為70%以上，更佳係〇%以上。 　　作為成分(C)，係可舉出將包含碳原子數4~10之烴之石油餾分進行環化2量化後使其聚合所獲得之樹脂、使環戊二烯等之環狀二烯化合物聚合後所獲得之樹脂的氫化物、將芳香族烴樹脂或脂肪族烴・芳香族烴共聚合樹脂進行核內氫化後之樹脂。成分(C)係可藉由將製造乙烯或丙烯等之際副生成之分解油餾分中之碳原子數4~10之烴之聚合物進行部分或完全氫化而獲得。前述樹脂組成物中可僅含有1種成分(C)，亦可含有2種以上。<Component (C)> The component (C) may contain a monomer unit based on a monomer other than an alicyclic saturated hydrocarbon. Examples of the monomer other than the alicyclic saturated hydrocarbon include aromatic hydrocarbons and alicyclic unsaturated hydrocarbons. The number of monomer units based on the alicyclic saturated hydrocarbon is preferably 70% or more, more preferably 0% or more, with respect to 100% of the total number of monomer units contained in the component (C). Examples of the component (C) include a resin obtained by cyclizing a petroleum fraction containing hydrocarbons having 4 to 10 carbon atoms and quantifying and polymerizing the cyclic diene compound such as cyclopentadiene. A hydrogenated product of the resin obtained afterwards, or a resin obtained by subjecting an aromatic hydrocarbon resin or an aliphatic hydrocarbon / aromatic hydrocarbon copolymer resin to hydrogenation in the core. The component (C) can be obtained by partially or completely hydrogenating a polymer having 4 to 10 carbon atoms in a decomposed oil fraction produced as a by-product during the production of ethylene or propylene. The resin composition may contain only one component (C), or may contain two or more components.

成分(C)之重量平均分子量，係較佳為800~ 1900，更佳為1000~1800。The weight average molecular weight of the component (C) is preferably 800 to 1900, and more preferably 1,000 to 1800.

成分(C)之菲卡軟化點，係較佳為110℃以上，更佳為130℃以上。成分(C)之菲卡軟化點，係可藉由環球法求得。The Ficca softening point of the component (C) is preferably 110 ° C or higher, and more preferably 130 ° C or higher. The Ficca softening point of the component (C) can be obtained by the ring and ball method.

相對於成分(A)、(B)及(C)之合計量100重量%，成分(C)之含量為2重量%以上、10重量%以下。樹脂組成物中之全聚合物中所含之成分(C)之含量，係較佳為2.5重量%以上、9重量%以下，更佳為3重量%以上、8重量%以下。The content of the component (C) is 2% by weight or more and 10% by weight or less based on 100% by weight of the total amount of the components (A), (B), and (C). The content of the component (C) contained in the entire polymer in the resin composition is preferably 2.5% by weight or more and 9% by weight or less, and more preferably 3% by weight or more and 8% by weight or less.

相對於成分(A)、成分(B)及成分(C)之合計量100重量%， 　　樹脂組成物中之全聚合物中所含之以不飽和酯為基礎之單體單元之含量為3重量%以上、10重量%以下，較佳為4重量%以上，更佳為8重量%以下，亦可為4重量%以上、8重量%以下。藉由調整成分(A)、(B)及(C)之含量、或成分(B)中所含之以不飽和酯為基礎之單體單元之含量，可控制樹脂組成物中之全聚合物中所含之以不飽和酯為基礎之單體單元之含量。 　　藉由使樹脂組成物中之全聚合物中所含之以不飽和酯為基礎之單體單元之含量為3重量%以上、10重量%以下，並使成分(C)之含量相對於成分(A)、(B)及(C)之合計量100重量%為2重量%以上、10重量%以下，可使D730/D720為0.680以上0.900以下，且T1/T0為1.80以上、2.20以下。The content of the monomer unit based on the unsaturated ester contained in the total polymer of the fluorene resin composition is 3% by weight based on 100% by weight of the total amount of the component (A), the component (B), and the component (C). % Or more and 10% by weight or less, preferably 4% or more by weight, more preferably 8% by weight or less, or 4% by weight or more and 8% by weight or less. By adjusting the content of the components (A), (B), and (C), or the content of the unsaturated ester-based monomer units contained in the component (B), the entire polymer in the resin composition can be controlled The content of monomer units based on unsaturated esters contained in it. By setting the content of the unsaturated ester-based monomer units in the all polymer in the resin composition to be 3% by weight or more and 10% by weight or less, the content of the component (C) relative to the component ( The total amount of 100% by weight of A), (B), and (C) is 2% by weight or more and 10% by weight or less, D730 / D720 can be 0.680 or more and 0.900 or less, and T1 / T0 can be 1.80 or more and 2.20 or less.

相對於樹脂組成物中所含有之成分(A)、(B)及成分(C)之合計量100重量%，成分(A)之含量為較佳為50重量%以上、90重量%以下，更佳為65重量%以上、85重量%以下。 　　相對於樹脂組成物中所含有之成分(A)、(B)及(C)之合計量100重量%，成分(B)之含量較佳為10重量%以上、50重量%以下，更佳為15重量%以上、30重量%以下。 　　相對於樹脂組成物之全量100重量%，成分(A)、(B)及(C)之合計量係90重量%以上為佳，〇〇重量%以上為較佳。 　　相對於樹脂組成物中之全聚合物之合計量100重量%，成分(A)、(B)及(C)之合計量較佳係95重量%以上，更佳為98重量%以上，再更佳為100重量%。The content of the component (A) is preferably 50% by weight or more and 90% by weight or less, based on 100% by weight of the total amount of the components (A), (B) and (C) contained in the resin composition It is preferably 65% by weight or more and 85% by weight or less. The content of the component (B) is preferably 10% by weight or more and 50% by weight or less, more preferably 100% by weight based on the total amount of the components (A), (B), and (C) contained in the resin composition. 15% by weight or more and 30% by weight or less. The total amount of the components (A), (B), and (C) is preferably 90% by weight or more, and more preferably 0.00% by weight or more with respect to 100% by weight of the total amount of the resin composition. The total amount of components (A), (B), and (C) is preferably 95% by weight or more, more preferably 98% by weight or more, based on 100% by weight of the total polymer in the resin composition. It is preferably 100% by weight.

樹脂組成物中，依需要亦可添加添加劑。作為添加劑，可舉出防黏連劑、抗氧化劑、潤滑劑、抗靜電劑、及加工性改良材。Additives may be added to the resin composition as needed. Examples of the additives include an antiblocking agent, an antioxidant, a lubricant, an antistatic agent, and a processability-improving material.

作為防黏連劑，係可舉出二氧化矽、矽藻土、碳酸鈣、滑石、甲基丙烯酸甲酯聚合物、及鋁矽酸鹽。防黏連劑之添加量係相對於成分(A)與成分(B)之合計量100重量份，較佳為0.1~5重量份，更佳為0.3~3重量份。Examples of the anti-blocking agent include silica, diatomaceous earth, calcium carbonate, talc, methyl methacrylate polymer, and aluminosilicate. The addition amount of the anti-blocking agent is 100 parts by weight with respect to the total amount of the component (A) and the component (B), preferably 0.1 to 5 parts by weight, and more preferably 0.3 to 3 parts by weight.

防黏連劑較佳係折射率為1.48以上、1.55以下，體積基準之粒度分布之累積分率50%之粒子徑(D50)為6μm以上、15μm以下，以下述式(1)所求得之重量變化率E為未滿5重量%之微粒子(以下，亦記載為成分(D))。 　　E=100(G-F)/F　(1) (式(1)中，E為重量變化率(重量%)。F係將微粒子於減壓下，以溫度110℃，使其乾燥至每1小時之重量減少率成為0.1重量%以下為止之後之微粒子重量(g)。G係將進行過前述F測定之微粒子，於常壓下，於相對濕度75%及溫度40℃保存24小時後之微粒子重量(g))。 　　前述樹脂組成物係可僅含有1種，亦可含有2種以上之成分(D)。The anti-blocking agent preferably has a refractive index of 1.48 or more and 1.55 or less, a particle size distribution (D50) with a cumulative fraction of 50% of the volume-based particle size distribution of 6 μm or more and 15 μm or less. The weight change rate E is fine particles (hereinafter, also referred to as component (D)) of less than 5% by weight. E = 100 (GF) / F (1) (In the formula (1), E is the weight change rate (% by weight). F means that the fine particles are dried under reduced pressure at a temperature of 110 ° C. to one hour The weight (g) of the fine particles after the weight reduction rate is 0.1% by weight or less. G is the weight of fine particles after the F measurement has been performed under normal pressure at a relative humidity of 75% and a temperature of 40 ° C for 24 hours ( g)). The resin composition may contain only one kind, or may contain two or more kinds of the component (D).

成分(D)之折射率係更佳為1.49以上、1.52以下。折射率係藉由臨界角法來測定。The refractive index of the component (D) is more preferably 1.49 or more and 1.52 or less. The refractive index is measured by the critical angle method.

成分(D)之體積基準之粒度分布之累積分率50%之粒子徑(D50)，更佳為6μm以上、9μm以下，再更佳為6μm以上、8μm以下。成分(D)之體積基準之粒度分布，係藉由雷射繞射・散射法來測定。The particle diameter (D50) of the cumulative fraction of the particle size distribution of the component (D) based on 50% is more preferably 6 μm or more and 9 μm or less, and even more preferably 6 μm or more and 8 μm or less. The volume-based particle size distribution of the component (D) is measured by a laser diffraction / scattering method.

成分(D)之體積基準之粒度分布之累積分率90%之粒子徑(D90)，由提高所獲得之薄膜之透明性之觀點來看，較佳為9μm以上。 　　成分(D)之D90，係由使所獲得之密封層間之黏連顯著減少之觀點來看，較佳為18μm以下，更佳為16μm以下，更佳為15μm以下，特佳為14μm以下。From the viewpoint of improving the transparency of the obtained film, the particle diameter (D90) of the cumulative fraction of the particle size distribution based on the volume basis of the component (D) of 90% is preferably 9 μm or more. D90 of the hafnium component (D) is preferably 18 μm or less, more preferably 16 μm or less, even more preferably 15 μm or less, and particularly preferably 14 μm or less, from the viewpoint of significantly reducing the adhesion between the obtained sealing layers.

成分(D)較佳係由甲基丙烯酸甲酯聚合物微粒子、鈉鈣鋁矽酸鹽微粒子、鈉鋁矽酸鹽微粒子、燒結高嶺土微粒子、燒結矽藻土微粒子，及，燒結二氧化矽微粒子所構成之群組中所選出之至少一種微粒子，更佳係由甲基丙烯酸甲酯聚合物微粒子、鈉鈣鋁矽酸鹽微粒子、鈉鋁矽酸鹽微粒子所構成之群組中所選出之至少一種微粒子，由提高薄膜之透明性之觀點來看，更佳為鈉鈣鋁矽酸鹽微粒子。Ingredient (D) is preferably composed of methyl methacrylate polymer particles, sodium calcium aluminosilicate particles, sodium aluminosilicate particles, sintered kaolin particles, sintered diatomite particles, and sintered silica particles. At least one kind of particles selected from the group consisting of at least one kind selected from the group consisting of methyl methacrylate polymer particles, sodium calcium aluminosilicate particles, sodium aluminosilicate particles From the viewpoint of improving the transparency of the film, the fine particles are more preferably soda-lime-aluminosilicate fine particles.

樹脂組成物中之成分(D)之含量，係由含有該樹脂組成物之薄膜之透明性、外觀之觀點來看，較佳為30,000ppm以下，更佳為27,000ppm以下，更佳為20,000ppm以下，特佳為17,000ppm以下。又，由防止密封層間之黏連之觀點來看，較佳為3,000ppm以上，更佳為5,000ppm以上，更佳為10,000ppm以上，特佳為15,000ppm以上，較佳為3,000ppm以上、30,000ppm以下，更佳為5,000ppm以上、27,000ppm以下，更佳為10,000ppm以上、20,000ppm以下，特佳為15,000ppm以上、17,000ppm以下。The content of the component (D) in the resin composition is preferably 30,000 ppm or less, more preferably 27,000 ppm or less, and more preferably 20,000 ppm from the viewpoint of transparency and appearance of the film containing the resin composition. Below, particularly preferred is 17,000 ppm or less. From the viewpoint of preventing adhesion between the sealing layers, it is preferably 3,000 ppm or more, more preferably 5,000 ppm or more, even more preferably 10,000 ppm or more, particularly preferably 15,000 ppm or more, preferably 3,000 ppm or more, and 30,000. ppm or less, more preferably 5,000 ppm or more and 27,000 ppm or less, more preferably 10,000 ppm or more and 20,000 ppm or less, and particularly preferably 15,000 ppm or more and 17,000 ppm or less.

作為抗氧化劑，係可舉出2,6-二-t-丁基-p-甲酚(BHT)、四[亞甲基-3-(3,5-二-t-丁基-4-羥基苯基)丙酸酯]甲烷(Ciba Specialty Chemicals公司製、商品名：IRGANOX 1010)或n-十八烷基-3-(4’-羥基-3,5’-二-t-丁基苯基)丙酸酯(Ciba Specialty Chemicals公司製、商品名：IRGANOX 1076)等之酚系穩定劑；雙(2,4-二-t-丁基苯基)季戊四醇二亞磷酸酯或三(2,4-二-t-丁基苯基)亞磷酸酯等之亞磷酸酯系穩定劑；及6-[3-(3-t-丁基-4-羥基-5-甲基苯基)丙氧基]-2,4,8,10-四-t-丁基二苯並[d,f][1,3,2]二磷環庚烷(住友化學股份公司製、商品名：Sumilizer GP)等之酚-亞磷酸酯二官能系穩定劑。抗氧化劑之添加量係相對於成分(A)與成分(B)之合計量100重量份，較佳為0.001~1重量份，更佳為0.01~0.1重量份。Examples of the antioxidant include 2,6-di-t-butyl-p-cresol (BHT) and tetrakis [methylene-3- (3,5-di-t-butyl-4-hydroxyl] Phenyl) propionate] methane (Ciba Specialty Chemicals, trade name: IRGANOX 1010) or n-octadecyl-3- (4'-hydroxy-3,5'-di-t-butylphenyl ) Phenolic stabilizers such as propionate (Ciba Specialty Chemicals, trade name: IRGANOX 1076); bis (2,4-di-t-butylphenyl) pentaerythritol diphosphite or tris (2,4 -Di-t-butylphenyl) phosphite-based stabilizers; and 6- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propoxy ] -2,4,8,10-tetra-t-butyldibenzo [d, f] [1,3,2] diphosphocycloheptane (manufactured by Sumitomo Chemical Co., Ltd., trade name: Sumilizer GP), etc. Phenol-phosphite difunctional stabilizer. The added amount of the antioxidant is 100 parts by weight based on the total amount of the component (A) and the component (B), preferably 0.001 to 1 part by weight, and more preferably 0.01 to 0.1 part by weight.

作為潤滑劑，係可舉出芥酸醯胺、高級脂肪酸醯胺、高級脂肪酸酯。潤滑劑之添加量係相對於成分(A)與成分(B)之合計量100重量份，較佳為0.01~1重量份，更佳為0.03~0.5重量份。 　　作為抗靜電劑，係可舉出碳原子數8~22之脂肪酸之甘油酯、山梨糖醇酐酸酯及聚乙烯甘油酯。抗靜電劑之添加量係相對於組成物中之成分(A)與成分(B)之合計量100重量份，較佳為0.01~1重量份，更佳為0.1~0.5重量份。 　　作為加工性改良劑，可舉出硬脂酸鈣等之脂肪酸金屬鹽。加工性改良劑之添加量係相對於成分(A)與成分(B)之合計量100重量份，較佳為0.01~1重量份，更佳為0.1~0.5重量份。Examples of the lubricant include erucamide, higher fatty acid, and higher fatty acid esters. The added amount of the lubricant is 100 parts by weight based on the total amount of the component (A) and the component (B), preferably 0.01 to 1 part by weight, and more preferably 0.03 to 0.5 part by weight. As the antistatic agent, glycerides, sorbitan esters, and polyvinyl glycerides of fatty acids having 8 to 22 carbon atoms are mentioned. The added amount of the antistatic agent is 100 parts by weight with respect to the total amount of the component (A) and the component (B) in the composition, preferably 0.01 to 1 part by weight, and more preferably 0.1 to 0.5 part by weight. Examples of the processability improver include fatty acid metal salts such as calcium stearate. The addition amount of the processability improver is 100 parts by weight based on the total amount of the component (A) and the component (B), preferably 0.01 to 1 part by weight, and more preferably 0.1 to 0.5 part by weight.

添加劑係可在將樹脂組成物中所含之成分(A)、成分(B)及成分(C)預先混合後再添加，亦可添加於成分(A)、成分(B)中之任一者，或亦可各別添加於各成分中，亦可作為混合於成分(A)、成分(B)中之任一者之母料來使用。The additive may be added after mixing the component (A), the component (B), and the component (C) contained in the resin composition in advance, or may be added to any of the component (A) and the component (B) Alternatively, it may be added to each component individually, and it may be used as a master batch mixed with any one of the component (A) and the component (B).

樹脂組成物之製造方法可舉出公知的混合方法。作為公知的混合方法，可舉出將各聚合物乾燥混合之方法、熔融混合之方法。作為乾燥混合之方法，可舉出亨舍爾混合機、轉鼓混合機等之使用各種混合器之方法。作為熔融混合之方法，可舉出單軸擠壓機、雙軸擠壓機、班布里混合機、加熱輥等之各種使用混合機之方法。Examples of the method for producing the resin composition include known mixing methods. Examples of known mixing methods include a method of dry-mixing each polymer and a method of melt-mixing. Examples of the method of dry mixing include a method using various mixers such as a Henschel mixer, a drum mixer, and the like. As a method of melt mixing, various methods using a mixer, such as a uniaxial extruder, a biaxial extruder, a Banbury mixer, a heating roll, etc. are mentioned.

薄膜係包含基材層及密封層，薄膜之一表面為基材層，另一表面為密封層。薄膜係亦可具有基材層及密封層以外的層。 　　薄膜係可藉由將僅由密封層所構成之單層薄膜，或，具有密封層與基材層及密封層以外的層之多層薄膜，於基材上層合之層壓法來製造。作為層壓法，可舉出乾式層壓法、濕式層壓法、三明治層壓法。The film includes a substrate layer and a sealing layer. One surface of the film is a substrate layer and the other surface is a sealing layer. The film system may have layers other than the base material layer and the sealing layer. Films can be produced by laminating a single-layer film consisting of only a sealing layer, or a multilayer film having a sealing layer and a substrate layer and layers other than the sealing layer, laminated on the substrate. Examples of the lamination method include a dry lamination method, a wet lamination method, and a sandwich lamination method.

僅由密封層所構成之單層薄膜及具有密封層與基材層及密封層以外的層之多層薄膜，係可藉由充氣成型薄膜成形法來製造。 　　所謂基材層及密封層以外的層，係可舉出包含乙烯系聚合物之層。作為乙烯系聚合物，可舉出高壓法低密度聚乙烯及乙烯-α-烯烴共聚物。 　　具有密封層與基材層及密封層以外的層之多層薄膜，亦可為具有密封層及包含乙烯系聚合物之層，且多層薄膜之表面之至少一方為密封層之多層薄膜(α)。多層薄膜(α)係可藉由將成為密封層之樹脂組成物與乙烯系聚合物共擠出，並利用充氣成型薄膜成形來製造。The single-layer film consisting only of the sealing layer and the multilayer film having the sealing layer and the base material layer and layers other than the sealing layer can be manufactured by an air-molding film forming method. The layers other than the base material layer and the sealing layer include layers containing an ethylene-based polymer. Examples of the ethylene-based polymer include a high-pressure method low-density polyethylene and an ethylene-α-olefin copolymer.多层 A multilayer film having a sealing layer and a base material layer and a layer other than the sealing layer may also be a multilayer film (α) having a sealing layer and a layer containing a vinyl-based polymer, and at least one of the surfaces of the multilayer film is a sealing layer. The multilayer film (α) can be produced by co-extruding a resin composition that serves as a sealing layer and an ethylene-based polymer, and molding the film with an inflatable film.

薄膜之密封層之厚度為5μm以上100μm以下，10μm以上80μm以下為佳，15μm以上50μm以下為較佳。薄膜之密封層之厚度係使用冷凍切片機於薄膜之厚度方向薄切，藉由將所獲得之試驗片之斷面以光學顯微鏡觀察來測定。The thickness of the sealing layer of the film is 5 μm to 100 μm, 10 μm to 80 μm is preferred, and 15 μm to 50 μm is more preferred. The thickness of the sealing layer of the film was thinly cut in the thickness direction of the film using a cryostat, and the cross-section of the obtained test piece was measured with an optical microscope.

作為基材，可舉出玻璃紙、紙、板紙、織物、鋁箔、尼龍6或尼龍66等之聚醯胺樹脂、聚對苯二甲酸乙二醇酯或聚對苯二甲酸丁二醇酯等之聚酯樹脂、或包含延伸聚丙烯之層。Examples of the substrate include cellophane, paper, board, fabric, aluminum foil, polyamide resin such as nylon 6 or nylon 66, polyethylene terephthalate, or polybutylene terephthalate. Polyester resin, or a layer containing stretched polypropylene.

薄膜係可使用作為各種容器之蓋。作為容器之材料係可舉出丙烯均聚物、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、聚苯乙烯。薄膜係可用於果凍、布丁、優格、豆腐、方便麵、麵條類等各種之食品類、醫藥品類、化妝品類及工業製品之包裝容器之蓋。The film can be used as a cover for various containers. Examples of the material of the container include propylene homopolymer, propylene random copolymer, high-density polyethylene, ethylene-α-olefin copolymer, high-pressure low-density polyethylene, and polystyrene. Films can be used as lids for packaging containers of various foods, pharmaceuticals, cosmetics and industrial products such as jelly, pudding, yogurt, tofu, instant noodles, noodles and so on.

作為可用於作為容器之材料之丙烯均聚物，可舉出住友Noblen(註冊商標)之homograde(住友化學股份公司製)、PrimePolypro之homograde(Prime Polymer Co., Ltd.製)。作為可用於作為容器之材料之丙烯無規共聚物，係可舉出住友Noblen(註冊商標)之Random grade(住友化學股份公司製)、PrimePolypro之Random grade(Prime Polymer Co., Ltd.製)。作為可用於作為容器之材料之高密度聚乙烯，可舉出NOVATEC(註冊商標)HD(日本聚乙烯股份公司製)、HI-ZEX(註冊商標)、EVOLUE(註冊商標)H(皆為Prime Polymer Co., Ltd.製)。作為可用於作為容器之材料之聚苯乙烯，係可舉出積水成型工業股份公司製之PS Plate(HIPS製)。Examples of the propylene homopolymer that can be used as a container material include homograde (manufactured by Sumitomo Chemical Co., Ltd.) of Sumitomo Noblen (registered trademark) and homograde (manufactured by Prime Polymer Co., Ltd.) of PrimePolypro. Examples of the propylene random copolymer that can be used as a container material include Random grade (manufactured by Sumitomo Chemical Co., Ltd.) of Sumitomo Noblen (registered trademark) and Random grade (manufactured by Prime Polymer Co., Ltd.) of PrimePolypro. Examples of the high-density polyethylene that can be used as a container material include NOVATEC (registered trademark) HD (manufactured by Japan Polyethylene Corporation), HI-ZEX (registered trademark), and EVOLUE (registered trademark) H (all are Prime Polymer) Co., Ltd.). Examples of polystyrene that can be used as a container material include PS Plate (manufactured by HIPS) manufactured by Sekisui Molding Industry Co., Ltd.

藉由使包含薄膜之蓋之密封層與容器本體之凸緣部接合，而蓋與容器本體之凸緣部重疊，並施加熱及壓力進行熱密封，而可製作密封容器。 　　包含薄膜之蓋，係由兼具密封性與易開封性之觀點來看，熱密封強度較佳係各自為10~25N/mm。 [實施例]A sealed container can be manufactured by joining a sealing layer of a lid including a film to a flange portion of the container body, and overlapping the lid with the flange portion of the container body, and applying heat and pressure to perform heat sealing. (2) The cover containing a film is preferably 10 to 25 N / mm in terms of heat seal strength from the standpoint of having both sealability and ease of opening. [Example]

(1)原料樹脂，及，添加劑 成分(A) 　　PE1：茂金屬觸媒直鏈狀低密度聚乙烯 SUMIKATHENE EP GT140(住友化學股份公司製、乙烯-1-丁烯-1-己烯共聚物、MFR 0.9g/10分鐘、密度 918kg/m3 、Mw/Mn=8.6、Ea=69.3kJ/mol) 　　PE2：茂金屬觸媒直鏈狀低密度聚乙烯 SUMIKATHENE E FV201(住友化學股份公司製、乙烯/1-己烯共聚物、MFR 2.3g/10分鐘、密度 916kg/m3 、Mw/Mn =5.8、Ea=35.8kJ/mol) 成分(B) 　　OE1：SUMITATE KA-30(住友化學股份公司製、乙烯-乙酸乙烯酯共聚物、乙酸乙烯酯為基礎之單體單元之含量 28重量%、MFR 7.0g/10分鐘) 　　OE2：Acryft WK307(住友化學股份公司製、乙烯-甲基丙烯酸甲酯共聚物、甲基丙烯酸甲酯為基礎之單體單元之含量 25重量%、MFR 7.0g/10分鐘) 成分(C) 　　TA1：Alcon P-140(荒川化學工業股份公司製、環球法軟化點=140℃) 　　TA2：Kraton G1657(Kraton Corporation製、苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物SEBS、MFR(230℃)8g/10分鐘、苯乙烯單體之含量 13wt%) 其他 　　AO：抗氧化劑 Sumilizer GP(住友化學股份公司製) 　　SA：潤滑劑 芥酸醯胺 　　AB：防黏連劑 Minbloc SC6(Sibelco製、二氧化矽、折射率 1.51)(1) Raw resin and additive component (A) PE1: metallocene catalyst linear low-density polyethylene SUMIKATHENE EP GT140 (manufactured by Sumitomo Chemical Co., Ltd., ethylene-1-butene-1-hexene copolymer, MFR 0.9g / 10 minutes, density 918kg / m 3 , Mw / Mn = 8.6, Ea = 69.3kJ / mol) PE2: metallocene catalyst linear low-density polyethylene SUMIKATHENE E FV201 (manufactured by Sumitomo Chemical Co., Ltd., ethylene / 1-hexene copolymer, MFR 2.3g / 10 minutes, density 916kg / m 3 , Mw / Mn = 5.8, Ea = 35.8kJ / mol) Ingredient (B) OE1: SUMITATE KA-30 (made by Sumitomo Chemical Co., Ltd.) , Ethylene-vinyl acetate copolymer, vinyl acetate-based monomer unit content 28% by weight, MFR 7.0g / 10 minutes) OE2: Acryft WK307 (manufactured by Sumitomo Chemical Co., Ltd., ethylene-methyl methacrylate copolymerization Content, 25% by weight of monomer units based on methyl methacrylate, MFR 7.0g / 10 minutes) Component (C) TA1: Alcon P-140 (made by Arakawa Chemical Industry Co., Ltd., softening point of Universal Globe Method = 140 ° C) TA2: Kraton G1657 (manufactured by Kraton Corporation, styrene-ethylene / butene-styrene block copolymer SEBS, MFR (230 ° C) 8g / 1 0 minutes, content of styrene monomer: 13wt%) Other AO: Antioxidant Sumilizer GP (manufactured by Sumitomo Chemical Co., Ltd.) SA: Lubricant erucamide AB: Anti-blocking agent Minbloc SC6 (Sibelco, silicon dioxide, Refractive index 1.51)

(2)熱密封強度 　　將所製作之層合薄膜之密封層與下述之各黏附體接觸而重疊，以下述密封條件，使用熱封口機(TESTER SANGYO Co,. Ltd.製)進行熱密封，獲得樣品。將所獲得之樣品於23℃經過24小時以上之狀態調整後，於密封寬度方向之直角方向，切出具有密封寬度10mm、密封長度15mm之密封部之試驗片。接著，將所獲得之試驗片之密封部藉由拉伸試驗機，以300mm/分鐘之速度進行180°剝離，並測定每寬度15mm之熱密封強度。採用所獲得之熱密封強度之最大值。熱密封強度若為10~25N/15mm，薄膜則具備密封性與易開封性。 熱密封條件 　　密封溫度：160℃ 　　密封時間：1秒 　　密封桿幅度：10mm 　　密封壓力：450kPa 黏附體 　　黏附體1：聚丙烯薄片(PP) 　　(Noblen(註冊商標)H501之薄片 0.44mm厚度) 　　黏附體2：耐衝撃性聚苯乙烯薄片(HIPS) 　　(日本塑膠工業股份公司製、MFR 3.4g/10分鐘、菲卡軟化點96℃、PS薄片0.5mm厚度、夏比衝撃強度 11kJ/m2 )(2) Heat-sealing strength: The sealing layer of the produced laminated film is brought into contact with each of the following adherends and overlapped, and heat-sealed using a heat sealer (manufactured by TESTER SANGYO Co ,. Ltd.) under the following sealing conditions. Obtain a sample. After the obtained sample was adjusted at 23 ° C for more than 24 hours, a test piece having a sealing portion having a sealing width of 10 mm and a sealing length of 15 mm was cut out in a right-angle direction of the sealing width direction. Next, the sealed portion of the obtained test piece was peeled 180 ° at a speed of 300 mm / minute by a tensile tester, and the heat seal strength per width of 15 mm was measured. The maximum value of the obtained heat seal strength is used. If the heat-sealing strength is 10 to 25 N / 15 mm, the film will have sealing properties and easy opening properties. Heat sealing conditions Sealing temperature: 160 ° C Sealing time: 1 second Sealing rod width: 10mm Sealing pressure: 450kPa Adhesive body Adhesive body 1: Polypropylene sheet (PP) (Noblen (registered trademark) H501 sheet 0.44mm thickness) Adhesive body 2 : Impact-resistant polystyrene sheet (HIPS) (manufactured by Nippon Plastic Industry Co., Ltd., MFR 3.4g / 10 minutes, Ficca softening point 96 ° C, PS sheet 0.5mm thickness, Charpy impact strength 11kJ / m 2 )

(3)霧度 　　根據ASTM1003，測定藉由後述之方法成形之充氣成型薄膜(厚度60μm)之霧度(單位：%)。霧度越小，則透明性越佳。(3) Haze The haze (unit:%) of an air-molded film (thickness: 60 μm) formed by a method described later is measured in accordance with ASTM1003. The smaller the haze, the better the transparency.

(4)內部霧度 　　將藉由後述之方法成形之充氣成型薄膜(厚度60μm)，浸漬於放入有鄰苯二甲酸二甲酯之透明比色管中，並於經過浸漬之狀態下測定薄膜之內部霧度(單位：%)。內部霧度越小，則透明性越佳。(4) Inner haze An air-molded film (thickness 60 μm) formed by the method described below is immersed in a transparent colorimetric tube with dimethyl phthalate, and the film is measured under the state of immersion The internal haze (unit:%). The smaller the internal haze, the better the transparency.

(5)上下黏連(上下BL、單位：N/m2 ) 　　將藉由後述之方法成形之充氣成型薄膜(厚度60μm)切成10cm×10cm，以使充氣成型薄膜成形時之管內側間為密著之方式重合，並於調整為40℃之烤箱中，於400g/cm2 之荷重下，靜置7日。靜置後，使用Mackenzie黏連測試器(島津製作所製)，測定以剝離荷重速度20g/分鐘於垂直方向使其剝離之必要的荷重量。此值越小，則抗黏連性越佳。(5) Adhesion up and down (upper and lower BL, unit: N / m 2 ) The inflatable molding film (thickness 60 μm) formed by the method described below is cut into 10cm × 10cm, so that the inside of the tube when the inflatable molding film is formed is They were superimposed in a close manner, and left in an oven adjusted to 40 ° C under a load of 400 g / cm 2 for 7 days. After being left to stand, a Mackenzie adhesion tester (manufactured by Shimadzu Corporation) was used to measure a load necessary for peeling at a peel load speed of 20 g / min in a vertical direction. The smaller this value, the better the blocking resistance.

(6)熔體流動速率(MFR、單位：g/10分鐘) 　　於溫度190℃、荷重21.18N之條件下，藉由JIS K7210-1995所規定之A法測定MFR。(6) Melt flow rate (MFR, unit: g / 10 minutes) M Under the conditions of a temperature of 190 ° C and a load of 21.18N, the MFR is measured by the A method specified in JIS K7210-1995.

(7)夏比衝撃強度 　　夏比衝撃強度係根據JIS K7111來測定。(7) Charpy impact strength Charpy impact strength is measured in accordance with JIS K7111.

(8)乙酸乙烯酯為基礎之單體單元之含量 　　乙酸乙烯酯為基礎之單體單元之含量係依循 JIS K7192進行測定。(8) Content of vinyl acetate-based monomer units The content of vinyl acetate-based monomer units is measured in accordance with JIS K7192.

(9)母料之製造 　　將成分(A)與添加劑以表1中記載之比率，藉由班布里混練機以160℃溶融混練後，藉由造粒機進行團粒化，製造添加劑母料。(9) Manufacture of masterbatch The ingredients (A) and additives were melt-kneaded at 160 ° C with a Banbury mixer at a ratio shown in Table 1, and then granulated by a granulator to produce an additive masterbatch.

(10)表面結晶化指數 　　以後述之裝置及測定流程，藉由衰減式全反射法[Attenuated Total Reflection(ATR)法]進行紅外分光光譜測定。 　　・裝置：傅立葉交換紅外分光光度計 FT/IR-480、多重反射測定裝置 ATR-500M(皆為日本分光製)、稜鏡 KRS-5/45°(三洋科學製) 　　・量測模式：Abs 　　・分解能：4cm-1 、 　　・累積次數：32次、 　　・ATR-IR測定流程：使薄膜表面之密封層與KRS-5稜鏡之上表面與下表面接觸，獲得紅外線吸收光譜。 　　將所獲得之紅外線吸收光譜之吸光度Abs作為縱軸，以760~674cm-1 作為基線。於所獲得之紅外線吸收光譜之725cm-1 以上、735cm-1 以下之範圍中，將自基線起高度最大之峰值作為D730。於所獲得之紅外線吸收光譜之715 cm-1 以上、未滿725cm-1 之範圍中，將自基線起高度最大之峰值作為D730。藉由下述式求得表面結晶化指數。 　　・表面結晶化指數=D730/D720(10) An apparatus and a measurement process for the surface crystallization index described later, the infrared spectroscopic spectrum was measured by an attenuation total reflection method (Attenuated Total Reflection (ATR) method).・ Apparatus: Fourier exchange infrared spectrophotometer FT / IR-480, multiple reflection measuring device ATR-500M (both are made by Japan Spectroscopy), 稜鏡 KRS-5 / 45 ° (made by Sanyo Scientific) ・ Measurement mode: Abs ・Decomposition energy: 4cm -1 · Accumulation times: 32 times · ATR-IR measurement process: The sealing layer on the surface of the film is brought into contact with the upper and lower surfaces of KRS-5 稜鏡 to obtain an infrared absorption spectrum. The absorbance Abs of the obtained infrared absorption spectrum is taken as the vertical axis, and 760-674 cm -1 is taken as the baseline. In the range of 725 cm -1 to 735 cm -1 of the obtained infrared absorption spectrum, the peak having the highest height from the baseline was taken as D730. In the infrared absorption spectrum of the obtained of more than 715 cm -1, 725cm -1 of less than the range, the maximum height from baseline of the peak as D730. The surface crystallization index was obtained by the following formula.・ Surface crystallization index = D730 / D720

(11)位相差顯微鏡觀察 　　於使薄膜表面之密封層與黏附體2接觸之狀態下，將薄膜於黏附體2上，以溫度160℃、時間1秒、密封桿幅度10mm、壓力450kPa之條件進行熱密封，並獲得樣品。將所獲得之樣品使用冷凍切片機(LEICA公司製)，平行於熱密封寬度，於薄膜之厚度方向切斷，獲得厚度6μm之試驗片。將所獲得之試驗片之切斷面作為觀察面。使鄰苯二甲酸二甲酯附著於載玻片上，於其上以使斷面在上方的方式放置所獲得之試驗片。將觀察面藉由NIKON MICROPHOT FXA(Nikon Corporation製)之位相差顯微鏡進行測定，獲得圖像。使用所獲得之圖像測定T0 及T1 。 　　測定非熱密封部之薄膜表面之密封層之厚度。 　　T1 係藉由以下之方法求得。 　　(1)將密封層與黏附體2之黏著部的端點作為P1 。 　　(2)求得密封層與黏附體2以外之層之邊界線的切線L與P1 間的最短距離。 　　(3)藉由(2)所求得之距離之中，距離最短，且比非熱密封部之密封層之厚度更大者作為T1 。 　　T0 係藉由使用冷凍切片機於薄膜之厚度方向薄切，並將所獲得之試驗片之斷面以光學顯微鏡觀察來測定。(11) Observation with a phase-contrast microscope under the condition that the sealing layer on the surface of the film is in contact with the adherend 2, the film is placed on the adherend 2 under the conditions of a temperature of 160 ° C, a time of 1 second, a width of the sealing rod of 10 mm, and a pressure of 450 kPa Heat seal and obtain a sample. The obtained sample was cut in the thickness direction of the film in parallel to the heat-sealing width using a freezing microtome (manufactured by LEICA) to obtain a test piece having a thickness of 6 μm. The cut surface of the obtained test piece was used as an observation surface. Dimethyl phthalate was attached to a glass slide, and the obtained test piece was placed on it so that the cross section was upward. The observation surface was measured with a phase contrast microscope of NIKON MICROPHOT FXA (manufactured by Nikon Corporation) to obtain an image. Using the obtained images, T 0 and T 1 were measured. The thickness of the sealing layer on the film surface of the non-heat-sealed portion was measured. T 1 is obtained by the following method. (1) Let P 1 be the endpoint of the adhesion portion between the sealing layer and the adherend 2. (2) The shortest distance between the tangent line L and P 1 of the boundary line between the sealing layer and the layer other than the adherend 2 is obtained. (3) Among the distances obtained in (2), the shortest distance is greater than the thickness of the sealing layer of the non-heat-sealed portion as T 1 . T 0 is measured by thinly cutting in the thickness direction of the film using a cryostat, and observing a cross section of the obtained test piece with an optical microscope.

(12)菲卡軟化點 　　以荷重50N之條件，藉由JIS K7206所規定之方法測定菲卡軟化點。(12) Ficca softening point The Ficca softening point is measured by a method specified in JIS K7206 under a load of 50N.

(實施例1) [共擠出充氣成型薄膜成形] 　　藉由共擠出充氣成型成型法，以使外層、中間層、內層依序層合之方式，製造充氣成型薄膜。作為外層用樹脂組成物及中間層用樹脂組成物，使用由乙烯聚合物 SUMIKATHENE (註冊商標)E FV202(住友化學股份公司製、乙烯-1-己烯共聚物、MFR 2.0g/10分鐘、密度925 kg/m3 )80重量%、乙烯聚合物 SUMIKATHENE(註冊商標)F200(住友化學股份公司製、高壓法低密度聚乙烯、MFR 2.0g/10分鐘、密度924kg/m3 )20重量%所構成之樹脂組成物。作為內層用樹脂組成物，使用含有如表2所示之摻合量之PE1、OE1、TA1及、MB1之樹脂組成物。 　　共擠出充氣成型成型法係使用PLACO Co.,Ltd.製之三層充氣成型薄膜加工機，以衝模溫度170℃、總擠出量30kg/小時、吹塑比2.0、牽引速度9.5m/分鐘進行加工，製造出厚度構成比依外層/中間層/內層之順序為20μm/20μm/ 20μm，總厚度60μm之共擠出充氣成型薄膜。於所獲得之充氣成型薄膜管之外層表面，以使濕潤張力成為45dyn/cm之方式進行電暈放電處理。所獲得之充氣成型薄膜之物性顯示於表3。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為5重量%。 [層合薄膜成形] 　　使用康井精機(股)製之塗布機，將脂肪族酯系塗覆劑「Takelac A-310」與「Takenate A-3」(皆為三井武田化學股份公司製)依以下的摻合比混合後之溶液塗布於厚度12μm、寬度500mm之聚酯薄膜(東洋紡(股)製、商品名「E5102」)上。於所獲得之聚酯薄膜，使其與藉由上述實施例所獲得之薄膜之電暈處理面壓接後，以40℃之烤箱加熱48小時，獲得層合薄膜。 　　Takelac/Takenate/乙酸乙基=12/1/32(重量比) 　　使用層合薄膜，測定熱密封強度。結果顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。(Example 1) [Co-Extrusion Inflatable Film Forming] An air-molding film was produced by co-extrusion inflation molding method in which an outer layer, an intermediate layer, and an inner layer were sequentially laminated. As the resin composition for the outer layer and the resin composition for the intermediate layer, an ethylene polymer SUMIKATHENE (registered trademark) E FV202 (manufactured by Sumitomo Chemical Co., Ltd., ethylene-1-hexene copolymer, MFR 2.0 g / 10 minutes, density 925 kg / m 3 ) 80% by weight, ethylene polymer SUMIKATHENE (registered trademark) F200 (manufactured by Sumitomo Chemical Co., Ltd., high-pressure low-density polyethylene, MFR 2.0g / 10 minutes, density 924kg / m 3 ) 20% by weight Resin composition. As the resin composition for the inner layer, a resin composition containing PE1, OE1, TA1, and MB1 in the amounts shown in Table 2 was used. The co-extrusion inflation molding method uses a three-layer inflatable film processing machine made by PLACO Co., Ltd., with a die temperature of 170 ° C, a total extrusion capacity of 30 kg / hour, a blow molding ratio of 2.0, and a traction speed of 9.5 m / minute. It is processed to produce a co-extruded inflatable film having a thickness composition ratio of 20 μm / 20 μm / 20 μm in the order of outer layer / intermediate layer / inner layer and a total thickness of 60 μm. A corona discharge treatment was performed on the surface of the outer layer of the obtained inflatable molded film tube so that the wetting tension became 45 dyn / cm. The physical properties of the obtained inflatable molded film are shown in Table 3. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflated film is 5% by weight. [Laminated film forming] Using a coating machine made by Yasui Seiki Co., Ltd., the aliphatic ester-based coating agents "Takelac A-310" and "Takenate A-3" (both manufactured by Mitsui Takeda Chemical Co., Ltd.) were used. The solution after mixing at the following blending ratio was applied to a polyester film (manufactured by Toyobo Co., Ltd., trade name "E5102") having a thickness of 12 μm and a width of 500 mm. After the obtained polyester film was crimped to the corona-treated surface of the film obtained in the above example, it was heated in an oven at 40 ° C. for 48 hours to obtain a laminated film. Takelac / Takenate / ethyl acetate = 12/1/32 (weight ratio) The laminated film was used to measure the heat seal strength. The results are shown in Table 3. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4.

(實施例2) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為9.5重量%。(Example 2) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable molded film was 9.5% by weight.

(實施例3) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為9重量%。(Example 3) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable molded film was 9% by weight.

(實施例4) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為3.4重量%。(Example 4) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4. The content of the vinyl acetate-based monomer unit contained in the inner layer of the inflatable molded film was 3.4% by weight.

(實施例5) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為8.4重量%。(Example 5) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4. The content of the vinyl acetate-based monomer unit contained in the inner layer of the inflatable molded film was 8.4% by weight.

(實施例6) 　　除了將PE2、OE1、TA1及MB2以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為9.5重量%。(Example 6) 充气 Except that PE2, OE1, TA1, and MB2 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable molded film was 9.5% by weight.

(實施例7) 　　除了將PE1、OE2、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。充氣成型薄膜之內層中所含之甲基丙烯酸甲酯為基礎之單體單元之含量為3.8重量%。(Example 7) Except that PE1, OE2, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The content of the methyl methacrylate-based monomer unit contained in the inner layer of the inflatable molded film was 3.8% by weight.

(比較例1) 　　除了將PE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。充氣成型薄膜之內層中所含之以不飽和酯為基礎之單體單元之含量為0重量%。(Comparative Example 1) 充气 Except that PE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4. The content of the unsaturated ester-based monomer units contained in the inner layer of the inflatable film is 0% by weight.

(比較例2) 　　除了將PE1、OE1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為10重量%。(Comparative Example 2) 充气 Except that PE1, OE1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable molded film was 10% by weight.

(比較例3) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為13重量%。(Comparative Example 3) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable molded film was 13% by weight.

(比較例4) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為12重量%。(Comparative Example 4) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable molded film was 12% by weight.

(比較例5) 　　除了將PE1、OE1、TA2及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為11重量%。(Comparative Example 5) 充气 Except that PE1, OE1, TA2, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable film was 11% by weight.

(比較例6) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為2.8重量%。(Comparative Example 6) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable molded film was 2.8% by weight.

(比較例7) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為2.8重量%。(Comparative Example 7) 充气 Except that PE1, OE1, TA1, and MB1 were blended in the amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable molded film was 2.8% by weight.

(比較例8) 　　PE1、OE1、及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為3.4重量%。(Comparative Example 8) Except that PE1, OE1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The content of the vinyl acetate-based monomer unit contained in the inner layer of the inflatable molded film was 3.4% by weight.

(比較例9) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之D730/D720及T1/T0顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為9.8重量%。(Comparative Example 9) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The D730 / D720 and T1 / T0 of the laminated film are shown in Table 4. The content of the vinyl acetate-based monomer unit contained in the inner layer of the inflatable molded film was 9.8% by weight.

(比較例10) 　　除了將PE1、OE1、TA1及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之密封層表面結晶化指數顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為11.8重量%。(Comparative Example 10) 充气 Except that PE1, OE1, TA1, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The surface crystallization index of the sealing layer of the laminated film is shown in Table 4. The content of the vinyl acetate-based monomer units contained in the inner layer of the inflatable film was 11.8% by weight.

(比較例11) 　　PE1、OE1、TA2及MB1以表2所示之摻合量摻合以外，藉由與實施例1同樣的方式獲得充氣成型薄膜及多層薄膜。充氣成型薄膜，及，層合薄膜之物性顯示於表3。層合薄膜之密封層表面結晶化指數顯示於表4。充氣成型薄膜之內層中所含之乙酸乙烯酯為基礎之單體單元之含量為4.8重量%。(Comparative Example 11) Except that PE1, OE1, TA2, and MB1 were blended at the blending amounts shown in Table 2, an air-molded film and a multilayer film were obtained in the same manner as in Example 1. Table 3 shows the physical properties of the inflatable film and the laminated film. The surface crystallization index of the sealing layer of the laminated film is shown in Table 4. The content of the vinyl acetate-based monomer unit contained in the inner layer of the inflatable molded film was 4.8% by weight.

本專利申請係主張日本國專利申請第 2017-094501號(申請日2017年5月11日)之優先權者，藉由於此作為參考而將該等之全部納入本說明書中。This patent application claims priority from Japanese Patent Application No. 2017-094501 (filed on May 11, 2017), which is incorporated herein by reference in its entirety.

Claims (4)

一種薄膜，其係包含基材層及密封層，且厚度為20μm以上、150μm以下之薄膜， 　　且係薄膜之一表面層為基材層，另一表面層為密封層之薄膜， 　　其中，密封層係包含樹脂組成物，且厚度為5μm以上100μm以下， 　　藉由多重反射ATR-IR法測定之薄膜表面之密封層之表面之結晶化指數[D730/D720]為0.680以上、0.900以下， 　　於使薄膜表面之密封層與下述黏附體(X)接觸之狀態，將薄膜於下述於黏附體(X)上，以溫度160℃、時間1秒、密封桿幅度10mm、壓力450kPa之條件進行熱密封時，密封層之樹脂組成物由熱密封部向非熱密封部溶出並固化所形成之部分之厚度與非熱密封部之密封層之厚度之比為1.80以上、2.20以下， 　　黏附體(X)：由熔體流動速率為3.0g/10分鐘以上、4.0g/10分鐘以下，且菲卡軟化溫度為95℃以上、100℃以下之耐衝撃性聚苯乙烯所構成之厚度為350μm以上、550μm以下之黏附體。A film comprising a substrate layer and a sealing layer and having a thickness of 20 μm or more and 150 μm or less, and wherein one surface layer of the film is a substrate layer and the other surface layer is a sealing layer film, wherein the sealing layer It contains a resin composition and has a thickness of 5 μm or more and 100 μm or less. The crystallization index [D730 / D720] of the surface of the sealing layer of the film surface measured by the multiple reflection ATR-IR method is 0.680 or more and 0.900 or less. In a state where the sealing layer on the surface is in contact with the following adherend (X), the film is heat-sealed on the adherend (X) described below at a temperature of 160 ° C, a time of 1 second, a width of the sealing rod of 10 mm, and a pressure of 450 kPa. At this time, the ratio of the thickness of the resin composition of the sealing layer to the non-heat-sealed portion and solidified from the heat-sealed portion to the non-heat-sealed portion is 1.80 or more and 2.20 or less. Adhesion (X) : Thickness of impact-resistant polystyrene with a melt flow rate of 3.0 g / 10 minutes or more and 4.0 g / 10 minutes or less, and a Ficca softening temperature of 95 ° C to 100 ° C It is an adherend of 350 μm or more and 550 μm or less. 如請求項1記載之薄膜，其中，[D730/D720]為0.680以上、0.750以下。The film according to claim 1, wherein [D730 / D720] is 0.680 or more and 0.750 or less. 如請求項1或2記載之薄膜，其中，於黏附體(X)上，以溫度160℃、時間1秒、密封桿幅度10mm、壓力450kPa之條件進行熱密封時，密封層之樹脂組成物由熱密封部向非熱密封部溶出並固化所形成之部分之厚度與非熱密封部之密封層之厚度之比為1.85以上、2.20以下。If the film according to claim 1 or 2 is heat-sealed on the adherend (X) under the conditions of a temperature of 160 ° C., a time of 1 second, a width of the sealing rod of 10 mm, and a pressure of 450 kPa, the resin composition of the sealing layer is composed of The ratio of the thickness of the portion formed by the heat-sealed portion eluted to the non-heat-sealed portion and solidified to the thickness of the sealing layer of the non-heat-sealed portion is 1.85 or more and 2.20 or less. 一種蓋，其係包含請求項1~3中之任一項所記載之薄膜。A cover comprising the film described in any one of claims 1 to 3.
TW107115911A 2017-05-11 2018-05-10 film TW201903008A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017094501 2017-05-11
JP2017-094501 2017-05-11

Publications (1)

Publication Number Publication Date
TW201903008A true TW201903008A (en) 2019-01-16

Family

ID=64105154

Family Applications (1)

Application Number Title Priority Date Filing Date
TW107115911A TW201903008A (en) 2017-05-11 2018-05-10 film

Country Status (4)

Country Link
JP (1) JPWO2018207824A1 (en)
CN (1) CN110603290A (en)
TW (1) TW201903008A (en)
WO (1) WO2018207824A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8613162D0 (en) * 1986-05-30 1986-07-02 Exxon Chemical Patents Inc Sealable films
JP3409870B2 (en) * 1993-01-19 2003-05-26 三菱化学株式会社 Resin film
JP3386213B2 (en) * 1994-01-17 2003-03-17 三井・デュポンポリケミカル株式会社 Resin composition and laminate thereof
JP2002226642A (en) * 2001-02-01 2002-08-14 Tohcello Co Ltd Thermoplastic resin composition and sealing material using the same
CN100532443C (en) * 2004-01-08 2009-08-26 纳幕尔杜邦公司 Composition comprising ethylene copolymers and polyolefin
US7892391B2 (en) * 2004-01-29 2011-02-22 E. I. Du Pont De Nemours And Company Compositions of ethylene/vinyl acetate copolymers for heat-sealable easy opening packaging
US20060014022A1 (en) * 2004-07-15 2006-01-19 Kendig Terrance D Composition comprising ethylene copolymer and polyolefin
JP2014076543A (en) * 2012-10-06 2014-05-01 Mitsubishi Plastics Inc Film for stretch packaging
ES2768850T3 (en) * 2015-01-23 2020-06-23 Bostik Inc Low activation melt hot melt adhesive based on metallocene polyolefin
CN109790334B (en) * 2016-09-30 2021-09-24 住友化学株式会社 Film

Also Published As

Publication number Publication date
JPWO2018207824A1 (en) 2020-03-12
WO2018207824A1 (en) 2018-11-15
CN110603290A (en) 2019-12-20

Similar Documents

Publication Publication Date Title
RU2520209C2 (en) Films based on cross-linked polymers and articles made therefrom
CN113954475A (en) Multilayer films, methods of manufacture thereof, and articles comprising the same
WO2012115848A1 (en) Methods of improving polyethylene stretch films
TW201538324A (en) Polyolefin-based unstretched multilayer film
US20120217682A1 (en) Methods of Improving the Physical Properties of Polyolefin Films
JP2001162737A (en) Multi-layer film for packaging
CN111356737A (en) Polyethylene resin composition for lamination, laminate, and method for producing laminate
ES2922183T3 (en) Methods of preparation of a peelable sealing layer
JP2012087164A (en) Surface protective film
JP4588490B2 (en) Resin composition and stretched film obtained therefrom
TW201903008A (en) film
JP6908048B2 (en) the film
CN113166344B (en) Hydrogenated copolymer composition, adhesive material composition, and adhesive film
JP2021133590A (en) Easily openable film and package
EP3778232A1 (en) Laminate film, packaging material, and packaging body
JP2021095162A (en) Easily openable film and packaging body
JP2016107497A (en) Film, method for producing stretched film and packaging material using the film
JP2013071409A (en) Laminated film
JP2021138808A (en) Thermal adhesive film
JPH10315403A (en) Laminated resin film
JP2003251761A (en) Film for stretchable label
US20240026143A1 (en) Compositions, multilayer films formed from such compositions, and articles
JP2002317080A (en) Resin composition having heat-sealing property
CN117062871A (en) Olefin polymer composition and film
JP2018199295A (en) Successively biaxially oriented film, and manufacturing method for successively biaxially oriented film