JP2002256116A - Film for wrapping - Google Patents
Film for wrappingInfo
- Publication number
- JP2002256116A JP2002256116A JP2001058444A JP2001058444A JP2002256116A JP 2002256116 A JP2002256116 A JP 2002256116A JP 2001058444 A JP2001058444 A JP 2001058444A JP 2001058444 A JP2001058444 A JP 2001058444A JP 2002256116 A JP2002256116 A JP 2002256116A
- Authority
- JP
- Japan
- Prior art keywords
- film
- packaging
- silica
- particle size
- present
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Landscapes
- Wrappers (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、包装用フィルム、
特に、ポリオレフィン系樹脂に充填剤として特定の球状
シリカを配合した包装用フィルムに関するものである。TECHNICAL FIELD The present invention relates to a packaging film,
In particular, the present invention relates to a packaging film in which a specific spherical silica is blended as a filler with a polyolefin resin.
【０００２】[0002]
【従来の技術】従来、ポリオレフィン系樹脂にゼオライ
ト、シリカなどの無機フィラーを配合して耐ブロッキン
グ性、滑り性を改良したポリオレフィン系フィルムが知
られている。2. Description of the Related Art Conventionally, there has been known a polyolefin-based film in which an inorganic filler such as zeolite or silica is blended with a polyolefin-based resin to improve blocking resistance and slipperiness.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の包装用フィ
ルムでは、ポリオレフィン系樹脂にゼオライトを配合す
る場合、耐ブロッキング性を向上しようとするとフィラ
ーを多く添加する必要があり、フィルムの生産性は著し
く悪化する。また、ポリオレフィン系樹脂にシリカを配
合する場合は、平均粒径０．５〜７μｍのものを配合す
ることが知られており、透明性、耐ブロッキング性、滑
り性のよいフィルムが得られるが、シリカのタイプによ
ってはフィルムの生産性が悪いという問題があった。In the conventional packaging film described above, when zeolite is blended with the polyolefin resin, it is necessary to add a large amount of filler in order to improve the blocking resistance, and the productivity of the film is remarkable. Getting worse. In addition, when silica is blended with the polyolefin resin, it is known to blend a silica having an average particle size of 0.5 to 7 μm, and a film having good transparency, blocking resistance, and slipperiness can be obtained. There was a problem that the productivity of the film was poor depending on the type of silica.
【０００４】本発明は、上記従来の包装用フィルムの有
する問題点を解決し、フィルム生産性が優れ、かつ、耐
ブロッキング性、滑り性、透明性に優れた包装用フィル
ムを提供することを目的とする。An object of the present invention is to solve the above-mentioned problems of the conventional packaging film and to provide a packaging film having excellent film productivity and excellent blocking resistance, slipperiness and transparency. And
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明の包装用フィルムは、ポリオレフィン系樹脂
１００重量部に、見掛け比重１．１５ｇ／ｃｍ3以上、
平均粒径７．５〜１３μｍの球状シリカを０．５〜１．
５重量部配合した組成物からなることを特徴とする。Means for Solving the Problems To achieve the above object, a packaging film of the present invention is prepared by adding an apparent specific gravity of 1.15 g / cm 3 or more to 100 parts by weight of a polyolefin resin.
Spherical silica having an average particle size of 7.5 to 13 μm is used for 0.5 to 1.
It is characterized by comprising a composition in which 5 parts by weight are blended.
【０００６】上記の構成からなる本発明の包装用フィル
ムは、フィルム生産性が優れ、かつ、耐ブロッキング
性、滑り性、透明性に優れている。[0006] The packaging film of the present invention having the above-mentioned structure has excellent film productivity and excellent blocking resistance, slipperiness and transparency.
【０００７】[0007]
【発明の実施の形態】以下、本発明の包装用フィルムの
実施の形態を説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the packaging film of the present invention will be described.
【０００８】本発明の包装用フィルムにおいて用いるポ
リオレフィン系樹脂としては、ポリエチレン、ポリプロ
ピレン、ポリブテン、ポリ−４−メチルペンテン−１な
どの単独共重合体、エチレン・プロピレン共重合体、エ
チレン・ブテン共重合体、エチレン・プロピレン・ブテ
ン共重合体、プロピレン・エチレン共重合体などの共重
合体あるいはこれらの混合物を挙げることができるが、
なかでも、ポリエチレン、特に、線状低密度ポリエチレ
ン又は低密度ポリエチレンを用いることが好ましい。The polyolefin resins used in the packaging film of the present invention include homopolymers such as polyethylene, polypropylene, polybutene and poly-4-methylpentene-1, ethylene-propylene copolymer, and ethylene-butene copolymer. Coalesce, ethylene-propylene-butene copolymer, copolymers such as propylene-ethylene copolymer or mixtures thereof,
Especially, it is preferable to use polyethylene, especially linear low density polyethylene or low density polyethylene.
【０００９】本発明で用いるのに好ましい線状低密度ポ
リエチレンとしては、線状ポリエチレンであって、エチ
レンと、好ましくは０．２〜２０モル％、より好ましく
は１〜１０モル％の炭素数３〜１０のα−オレフィンの
少なくとも１種とを液相法又は気相法で共重合させたも
のを挙げることができる。上記α−オレフィンの具体例
としては、プロピレン、ブテン−１、ペンテン−１、ヘ
キセン−１、オクテン−１、ノネン−１、デセン−１、
４−メチルペンテン−１、４−メチルヘキセン−１、
４，４−ジメチルペンテン−１などが挙げられる。ま
た、密度は通常０．９１〜０．９６程度であって、メル
トフローレート（以下ＭＦＲと略称する）は通常１〜１
５ｇ／１０分、好ましくは４．０〜８．０ｇ／１０分程
度である。また、融点は８５〜１３５℃程度であるのが
通常である。The preferred linear low-density polyethylene for use in the present invention is linear polyethylene, which contains ethylene, preferably 0.2 to 20 mol%, more preferably 1 to 10 mol%, having 3 carbon atoms. Those obtained by copolymerizing at least one kind of α-olefin of 10 to 10 with a liquid phase method or a gas phase method can be mentioned. Specific examples of the α-olefin include propylene, butene-1, pentene-1, hexene-1, octene-1, nonene-1, decene-1,
4-methylpentene-1, 4-methylhexene-1,
4,4-dimethylpentene-1 and the like. The density is usually about 0.91 to 0.96, and the melt flow rate (hereinafter abbreviated as MFR) is usually 1 to 1
It is about 5 g / 10 minutes, preferably about 4.0 to 8.0 g / 10 minutes. The melting point is usually about 85 to 135 ° C.
【００１０】また、上記線状低密度ポリエチレンの好ま
しいＭＦＲの範囲は、１〜１５ｇ／１０分（ＪＩＳ Ｋ
７２１０に準じた２３０℃での値）、特に好ましくは４
〜８ｇ／１０分であり、また、低密度ポリエチレンの、
好ましいＭＦＲの範囲は０．３〜５．０ｇ／１０分であ
る。これらのポリエチレンは、例えば、減圧処理などで
脱臭処理したものを用いるのが好ましい。The preferred range of the MFR of the linear low-density polyethylene is 1 to 15 g / 10 min (JIS K
Value at 230 ° C. according to 7210), particularly preferably 4
８8 g / 10 min, and of low density polyethylene,
A preferred MFR range is 0.3-5.0 g / 10 min. It is preferable to use those polyethylenes which have been deodorized by, for example, a vacuum treatment.
【００１１】また、本発明で用いるのに好ましい低密度
ポリエチレンは密度が通常０．９１〜０．９３程度のポ
リエチレンであって、例えばエチレンを１８０〜２００
℃の高温、１０００〜２０００気圧の高圧でラジカル重
合させて得ることができ、通常、側鎖が多く、結晶性は
低い。The low-density polyethylene preferred for use in the present invention is a polyethylene having a density of usually about 0.91 to 0.93.
It can be obtained by radical polymerization at a high temperature of 1000C and a high pressure of 1000 to 2000 atmospheres, and usually has many side chains and low crystallinity.
【００１２】また、本発明に配合する球状シリカは、見
掛け比重１．１５ｇ／ｃｍ3以上かつ平均粒径７．５〜
１３μｍのものを用いる。見掛け比重が１．１５ｇ／ｃ
ｍ3未満であると、得られたフィルムの透明性が低いば
かりでなく、フィルムの生産性も低いものとなる。ま
た、球状シリカの平均粒径が７．５μｍ未満のものは耐
ブロッキング性を充分保持することができず、また、フ
ィルムの滑り性も低くなる。また、平均粒径が１３μｍ
より大きい場合は耐ブロッキング性には優れるが、透明
性が悪くなるため好ましくない。また、上記球状シリカ
の配合量は、通常、ポリオレフィン系樹脂１００重量部
当たり０．５〜１．５重量部、好ましくは０．８〜１．
２重量部である。その量が０．５重量部未満ではフィル
ムの耐ブロッキング性が充分でなく、１．５重量部を超
えるとフィルムの透明性が悪化するという問題を生ず
る。The spherical silica used in the present invention has an apparent specific gravity of 1.15 g / cm 3 or more and an average particle size of 7.5 to 7.5.
The thing of 13 micrometers is used. Apparent specific gravity is 1.15 g / c
When it is less than m 3 , not only the transparency of the obtained film is low, but also the productivity of the film is low. When the average particle diameter of the spherical silica is less than 7.5 μm, the blocking resistance cannot be sufficiently maintained, and the slipperiness of the film becomes low. In addition, the average particle size is 13 μm
When it is larger, the blocking resistance is excellent, but the transparency deteriorates, which is not preferable. The amount of the spherical silica is usually 0.5 to 1.5 parts by weight, preferably 0.8 to 1 part by weight per 100 parts by weight of the polyolefin resin.
2 parts by weight. If the amount is less than 0.5 parts by weight, the blocking resistance of the film is not sufficient, and if it exceeds 1.5 parts by weight, there arises a problem that the transparency of the film deteriorates.
【００１３】なお、球状シリカの粒度分布は狭いほど、
フィルムの透明性が良くなり好ましい。粒度分布はレー
ザー回折散乱法にて、単位μｍで表されるが、その分布
が２．０μｍ〜２０．０μｍの範囲であるのが好まし
い。The narrower the particle size distribution of the spherical silica is,
This is preferable because the transparency of the film is improved. The particle size distribution is expressed in units of μm by a laser diffraction scattering method, and the distribution is preferably in the range of 2.0 μm to 20.0 μm.
【００１４】また、比表面積が大きいものはシリカの空
洞部分が多く形が球状でないことを表している。この観
点からは、比表面積は簡易表面積測定法にて、単位ｍ2
／ｇで表されるが、その値が０．７０〜０．９５の範囲
であるのが好ましい。比表面積が１．０を超えるものは
フィルムの生産性を悪化させる。A sample having a large specific surface area indicates that the hollow portion of silica is large and the shape is not spherical. From this point of view, the specific surface area is determined by the simple surface area measurement method in units of m 2.
/ G, preferably in the range of 0.70 to 0.95. When the specific surface area exceeds 1.0, the productivity of the film is deteriorated.
【００１５】ポリオレフィン系樹脂に本発明において用
いる球状シリカを配合する方法は、任意であって特に限
定するものではないが、ヘンシェルミキサーやバンバリ
ーミキサーなどを用いて混練した後、ペレット化する方
法が好ましい。The method of blending the spherical silica used in the present invention with the polyolefin resin is optional and not particularly limited, but a method of kneading using a Henschel mixer or a Banbury mixer and then pelletizing is preferred. .
【００１６】なお、上記フィルムには熱安定剤、アンチ
ブロッキング剤、スリップ剤を配合するのがフィシュア
イ防止、滑り性の付与という観点から好ましい。It is preferable that a heat stabilizer, an anti-blocking agent and a slip agent are added to the film from the viewpoints of preventing fish eyes and imparting lubricity.
【００１７】本発明の包装用フィルムの層構成として
は、ポリオレフィン系樹脂に特定の球状シリカを配合し
たフィルム単層でもよいが、上記フィルムを少なくとも
一層に有する積層フィルムにすることで、さらに他の特
性を付与できるという点で好ましい。The layer structure of the packaging film of the present invention may be a single layer film in which a specific spherical silica is blended with a polyolefin-based resin. This is preferable in that properties can be imparted.
【００１８】本発明の包装用フィルムを製造するには、
例えば、Ｔダイを用いるＴダイ成形法、円形ダイを用い
るインフレーション成形法が採用できる。また、必要に
より共押出し成形法を用いる。Ｔダイ成形を行う場合に
は、ドラフト率を１〜１０％、樹脂温度を１５０〜３０
０℃に設定して冷却ドラム上に押出すことが好ましい。
厚みは、包装用フィルムとして、通常５〜１５０μｍ、
より一般的には１５〜８０μｍの範囲である。包装用フ
ィルムの厚みは、１５０μｍを越えると、フレキシブル
性の不足が問題となり、５μｍ未満であると実用強度が
低く、包装物の破袋という問題が生じる。To produce the packaging film of the present invention,
For example, a T-die molding method using a T-die and an inflation molding method using a circular die can be adopted. If necessary, a co-extrusion molding method is used. When performing T-die molding, the draft rate is 1 to 10% and the resin temperature is 150 to 30.
It is preferred to extrude onto a cooling drum set at 0 ° C.
The thickness is usually 5 to 150 μm as a packaging film,
More generally, it is in the range of 15 to 80 μm. If the thickness of the packaging film exceeds 150 μm, insufficient flexibility will be a problem, and if it is less than 5 μm, the practical strength will be low, and the package will break.
【００１９】本発明の包装用フィルムは無延伸フィルム
として単体で用いる他、他のフィルム層と積層して積層
包装材料としての表層に積層して用いることができるの
で、この場合、ヒートシール性、滑り性、耐ブロッキン
グ性、ラミネート性、ガスバリア性、耐衝撃性、表面保
護性、機械的性質などに優れていることも好ましい。従
って、本発明の包装用フィルムは単体構成としてもよい
が、上記各性質を異なる層に分担させて積層包装材料と
して積層構造で構成することも好ましい。The packaging film of the present invention can be used alone as a non-stretched film, or can be laminated on another film layer and laminated on the surface layer as a laminated packaging material. It is also preferable that they have excellent slipperiness, blocking resistance, laminating properties, gas barrier properties, impact resistance, surface protection properties, mechanical properties, and the like. Therefore, the packaging film of the present invention may have a single structure, but it is also preferable that the above-mentioned properties are shared by different layers and that the laminated film is formed in a laminated structure as a laminated packaging material.
【００２０】本発明の包装用フィルムを他のフィルムと
積層して積層包装材料を製造するために、他のフィルム
層に積層する場合の層構成は特に限定されないが、本発
明のフィルムはシーラントフィルムとして適しているの
で、本発明のフィルムに次のような基材層を積層した積
層包装材料であるのが好ましい。When the packaging film of the present invention is laminated with another film to produce a laminated packaging material by laminating the packaging film of the present invention with another film, the layer constitution is not particularly limited. It is preferable to use a laminated packaging material in which the following base material layer is laminated on the film of the present invention.
【００２１】基材層としては、熱可塑性樹脂からなるフ
ィルム又は金属蒸着フィルム、金属箔などを挙げること
ができる。熱可塑性樹脂としてはポリプロピレン、ポリ
ブテンなどのポリオレフィン系樹脂、ポリエチレンテレ
フタレート、ポリエチレン−２，６−ナフタレート、ポ
リブチレンテレフタレートやそれらの共重合体などに代
表されるポリエステル系樹脂、ポリオキシメチレンに代
表されるポリエーテル系樹脂、ナイロン６、ナイロン６
６、ポリメタキシレンアジパミドなどに代表されるポリ
アミド系樹脂、ポリスチレン、ポリ（メタ）アクリル酸
エステル、ポリアクリロニトリル、ポリ酢酸ビニルやそ
れらの共重合体に代表されるビニル系樹脂、ポリカーボ
ネート系樹脂などやセロファン、アセテートなどに代表
されるセルロース系樹脂、さらにはポリイミド、ポリエ
ーテルイミド、ポリフェニレンスルフィド、ポリエーテ
ルスルフォン、ポリスルフォン、ポリエーテルケトン、
ポリエーテルケトンケトン、フッ素含有重合体その他の
多くの樹脂の単体、共重合体、混合体、複合体などがあ
り、フィルムとして未延伸あるいは一軸又は直行する二
軸方向に延伸された配向フィルムなどを挙げることがで
きる。Examples of the substrate layer include a film made of a thermoplastic resin, a metal-deposited film, and a metal foil. Examples of the thermoplastic resin include polyolefin resins such as polypropylene and polybutene, polyester resins represented by polyethylene terephthalate, polyethylene-2,6-naphthalate, polybutylene terephthalate and copolymers thereof, and polyoxymethylene. Polyether resin, nylon 6, nylon 6
6. Polyamide-based resin represented by polymeta-xylene adipamide, polystyrene, poly (meth) acrylate, polyacrylonitrile, vinyl-based resin represented by polyvinyl acetate and copolymers thereof, and polycarbonate-based resin And cellophane, cellulosic resin represented by acetate, etc., furthermore, polyimide, polyetherimide, polyphenylene sulfide, polyether sulfone, polysulfone, polyether ketone,
Polyether ketone ketone, fluorine-containing polymer and many other resins alone, copolymers, mixtures, composites, and the like, there are unstretched or uniaxially or biaxially oriented oriented film as a film Can be mentioned.
【００２２】なかでも、本発明の趣旨からは、基材層に
は耐熱寸法変化や機械的強度、さらには成形性や経済性
などの面から二軸延伸されたポリプロピレン、ポリエス
テル、ポリアミドなどのフィルムである場合が好適であ
る。Above all, for the purpose of the present invention, a biaxially stretched film of polypropylene, polyester, polyamide, or the like is formed on the base material layer in view of heat resistance dimensional change, mechanical strength, moldability, economy and the like. Is preferred.
【００２３】基材層の厚みは特に限定はされないが、通
常は１〜２５０μｍであり、積層包装材料としては３〜
５０μｍである場合が特に好ましい。この基材層は、単
体であっても複合された多層フィルムであってもよく、
多層フィルムにおける複合方法や層数などは任意であ
る。Although the thickness of the base material layer is not particularly limited, it is usually 1 to 250 μm, and the thickness of the laminated packaging material is 3 to 250 μm.
It is particularly preferred that the thickness is 50 μm. This substrate layer may be a single or a composite multilayer film,
The compounding method and the number of layers in the multilayer film are arbitrary.
【００２４】本発明の包装用フィルムは、フィルム生産
性が優れ、かつ、耐ブロッキング性、滑り性、透明性に
優れた包装用フィルムであることから、包装用フィルム
及び積層包装材料として広く用いることができる。例え
ば、食品包装材料として味噌、漬物、惣菜、ベビーフー
ド、佃煮、こんにゃく、ちくわ、蒲鉾、水産加工品、ミ
ートボール、ハンバーグ、ジンギスカン、ハム、ソーセ
ージ、その他の畜肉加工品、茶、コーヒー、紅茶、鰹
節、とろろ昆布、ポテトチップス、バターピーナッツな
どの油菓子、米菓、ビスケット、クッキー、ケーキ、饅
頭、カステラ、チーズ、バター、切り餅、スープ、ソー
ス、ラーメン、わさびなど、あるいは練り歯磨きなどの
包装に幅広く用いられ、さらにはペットフード、農薬、
肥料、輸液パック、あるいは半導体や精密材料包装な
ど、医療、電子、化学、機械などの産業用材料包装にも
広く活用することができる。また、積層包装材料の使用
形態にも特に制限がなく、袋、フタ材、カップ、チュー
ブ、スタンディングパウチなどとして広く実用化でき
る。Since the packaging film of the present invention is a packaging film having excellent film productivity and excellent blocking resistance, sliding properties and transparency, it is widely used as a packaging film and a laminated packaging material. Can be. For example, food packaging materials such as miso, pickles, side dishes, baby food, tsukudani, konjac, chikuwa, kamaboko, fishery products, meatballs, hamburgers, genghis khan, ham, sausage, other processed meat products, tea, coffee, tea, For packaging of oil confectionery such as bonito, tororo kelp, potato chips, butter peanuts, rice confectionery, biscuits, cookies, cakes, buns, castella, cheese, butter, cut rice cakes, soups, sauces, ramen, wasabi, and toothpaste Widely used, even pet food, pesticides,
It can be widely used for packaging of industrial materials such as fertilizers, infusion packs, semiconductors, precision materials, and other medical, electronic, chemical, and mechanical products. There is no particular limitation on the form of use of the laminated packaging material, and it can be widely used as bags, lid materials, cups, tubes, standing pouches, and the like.
【００２５】[0025]
【実施例】以下、実施例を挙げて、本発明の内容及び効
果を具体的に説明する。なお、本発明は、その要旨を逸
脱しない限り以下の実施例に限定されるものではない。
また、下記実施例で採用した各種の特性値の測定はは次
の方法によって行った。The contents and effects of the present invention will be specifically described below with reference to examples. It should be noted that the present invention is not limited to the following embodiments unless departing from the gist thereof.
The measurement of various characteristic values employed in the following examples was performed by the following method.
【００２６】（１）見掛け比重 試料５ｇを秤り、２００ｍＬのメスシリンダーに入れ、
静置後の容量を測定した。(1) Apparent specific gravity 5 g of a sample was weighed and placed in a 200 mL measuring cylinder.
The volume after standing was measured.
【００２７】（２）平均粒径 試料を分散し、レーザー回折散乱法粒度分布測定器にて
測定した。(2) Average Particle Size The sample was dispersed and measured with a laser diffraction scattering particle size distribution analyzer.
【００２８】（３）比表面積 試料０．１０〜０．１５ｇを簡易迅速表面積測定装置に
て測定した。(3) Specific surface area A sample of 0.10 to 0.15 g was measured by a simple and quick surface area measuring device.
【００２９】（４）粒度分布 試料を分散し、レーザー回折散乱法粒度分布測定器にて
測定した。(4) Particle Size Distribution The sample was dispersed and measured with a laser diffraction scattering particle size distribution analyzer.
【００３０】（５）フィルム生産性 溶融押出機中で１５０メッシュフィルターを用いてのフ
ィルム連続生産において、２４ｈｒ以上製膜異常をおこ
さなかったものを○、２４ｈｒ未満に製膜異常があった
ものを×とした。(5) Film productivity In continuous production of a film using a 150-mesh filter in a melt extruder, a film having no film formation abnormality for 24 hours or more was evaluated as ○. X.
【００３１】（６）耐ブロッキング性 ＡＳＴＭ−Ｄ−１８９３−６７に準拠して測定した。(6) Blocking resistance Measured according to ASTM-D-1893-67.
【００３２】（７）滑り性 ＪＩＳ−Ｋ−７１２５に準拠して測定した。(7) Slip property Measured according to JIS-K-7125.
【００３３】（８）透明性 ＪＩＳ−Ｋ−７１０５に準拠して測定した。(8) Transparency Measured according to JIS-K-7105.
【００３４】（実施例１）ポリエチレン（線状低密度ポ
リエチレン：ＬＬＤＰＥ、密度０．９２３ｇ／ｃｍ3、
メルトインデックス４．０ｇ／１０分）１００重量部に
球状シリカ（見掛け比重１．１５ｇ／ｃｍ3、平均粒径
９．６、比表面積０．８８ｍ2／ｇ）１．０重量部を混
合した組成物を溶融し、押出機でＴダイから冷却ロール
上に押出し、厚さ３０μｍの包装用フィルムを得た。上
記フィルムはフィルム生産性が優れ、かつ、耐ブロッキ
ング性、滑り性、透明性に優れていた。特性値を表１に
示す。Example 1 Polyethylene (linear low density polyethylene: LLDPE, density 0.923 g / cm 3 ,
A composition in which 100 parts by weight of a melt index (4.0 g / 10 minutes) and 1.0 part by weight of spherical silica (apparent specific gravity 1.15 g / cm 3 , average particle size 9.6, specific surface area 0.88 m 2 / g) are mixed. The product was melted and extruded from a T-die on a cooling roll by an extruder to obtain a packaging film having a thickness of 30 μm. The film was excellent in film productivity, and excellent in blocking resistance, slipperiness, and transparency. Table 1 shows the characteristic values.
【００３５】（比較例１）実施例１において、用いるシ
リカを見掛け比重０．９４ｇ／ｃｍ3、平均粒径４．０
の球状シリカに変更した他は同様にして包装用フィルム
（厚さ３０μｍ）を得た。上記フィルムはフィルム生産
性は良好なものの、耐ブロッキング性、滑り性が不良で
あった。なお、透明性は良好であった。フィルム特性値
を表１に示す。Comparative Example 1 The silica used in Example 1 had an apparent specific gravity of 0.94 g / cm 3 and an average particle size of 4.0.
A packaging film (thickness: 30 μm) was obtained in the same manner except that spherical silica was used. The film had good film productivity, but poor blocking resistance and slipperiness. The transparency was good. Table 1 shows the film characteristic values.
【００３６】（比較例２）実施例１において、用いるシ
リカを見掛け比重０．０８ｇ／ｃｍ3、平均粒径９．
０、比表面積３００ｍ2／ｇの不定形シリカに変更した
他は同様にして包装用フィルム（厚さ３０μｍ）を得
た。上記フィルムのフィルム生産性は悪かったが、一部
得られたフィルムは、耐ブロッキング性、滑り性は良好
であった。ただし、透明性は不足であった。フィルム特
性値を表１に示す。Comparative Example 2 The silica used in Example 1 had an apparent specific gravity of 0.08 g / cm 3 and an average particle size of 9.
0, and a packaging film (thickness: 30 μm) was obtained in the same manner except that amorphous silica having a specific surface area of 300 m 2 / g was used. Although the film productivity of the above film was poor, the partially obtained film had good blocking resistance and slipperiness. However, transparency was insufficient. Table 1 shows the film characteristic values.
【００３７】（比較例３）実施例１において、用いるシ
リカを見掛け比重０．１１ｇ／ｃｍ3、平均粒径１０．
０、比表面積５２０ｍ2／ｇの不定形シリカに変更した
他は同様にして包装用フィルム（厚さ３０μｍ）を得
た。上記フィルムはフィルム生産性が悪かったが、耐ブ
ロッキング性、滑り性は良好であった。ただし、透明性
は不足であった。フィルム特性値を表１に示す。Comparative Example 3 In Example 1, the silica used had an apparent specific gravity of 0.11 g / cm 3 and an average particle diameter of 10.
0, and a packaging film (thickness: 30 μm) was obtained in the same manner except that amorphous silica having a specific surface area of 520 m 2 / g was used. The film had poor film productivity, but had good blocking resistance and slipperiness. However, transparency was insufficient. Table 1 shows the film characteristic values.
【００３８】[0038]
【表１】 [Table 1]
【００３９】図１に示すように、本発明フィルムで用い
る球状シリカはその粒径及び見掛け比重とも大きいもの
である。図中ａは実施例１のシリカ、ｂは比較例１のシ
リカ、ｃは比較例２のシリカ、ｄは比較例３のシリカを
示す。As shown in FIG. 1, the spherical silica used in the film of the present invention has a large particle size and apparent specific gravity. In the figure, a indicates the silica of Example 1, b indicates the silica of Comparative Example 1, c indicates the silica of Comparative Example 2, and d indicates the silica of Comparative Example 3.
【００４０】[0040]
【発明の効果】本発明の包装用フィルムによれば、フィ
ルム生産性が優れ、かつ、耐ブロッキング性、滑り性、
透明性に優れている。According to the packaging film of the present invention, film productivity is excellent, and blocking resistance, slipperiness,
Excellent transparency.
【図１】実施例１及び比較例１〜３で用いたシリカの粒
径と見掛け比重との関係を示す図。FIG. 1 is a graph showing the relationship between the particle size of silica used in Example 1 and Comparative Examples 1 to 3 and apparent specific gravity.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3E086 AB01 BA02 BA15 BB55 BB90 CA01 CA15 CA29 CA31 CA32 4F071 AA14 AA18 AB26 AD06 AE22 AH04 BC01 4J002 BB001 BB031 BB051 BB121 BB151 BB171 DJ016 FA086 FD016 GG02 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E086 AB01 BA02 BA15 BB55 BB90 CA01 CA15 CA29 CA31 CA32 4F071 AA14 AA18 AB26 AD06 AE22 AH04 BC01 4J002 BB001 BB031 BB051 BB121 BB151 BB171 DJ016 FA086 FD016 GG02
Claims (1)
見掛け比重１．１５ｇ／ｃｍ3以上、平均粒径７．５〜
１３μｍの球状シリカを０．５〜１．５重量部配合した
組成物からなることを特徴とする包装用フィルム。1. 100 parts by weight of a polyolefin resin,
Apparent specific gravity 1.15 g / cm 3 or more, average particle size 7.5 to 7.5
A packaging film comprising a composition containing 0.5 to 1.5 parts by weight of 13 μm spherical silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001058444A JP5259897B2 (en) | 2001-03-02 | 2001-03-02 | Packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001058444A JP5259897B2 (en) | 2001-03-02 | 2001-03-02 | Packaging film |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011133375A Division JP2011231330A (en) | 2011-06-15 | 2011-06-15 | Packaging film and laminated packaging material using the packaging film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002256116A true JP2002256116A (en) | 2002-09-11 |
| JP5259897B2 JP5259897B2 (en) | 2013-08-07 |
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ID=18918166
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001058444A Expired - Fee Related JP5259897B2 (en) | 2001-03-02 | 2001-03-02 | Packaging film |
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Cited By (5)
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|---|---|---|---|---|
| WO2014175313A1 (en) | 2013-04-26 | 2014-10-30 | 東洋紡株式会社 | Polyester film for sealant use, laminate, and packaging bag |
| CN107531923A (en) * | 2015-04-30 | 2018-01-02 | 株式会社吴羽 | Vinylidene chloride resin film |
| KR20180124882A (en) | 2016-03-18 | 2018-11-21 | 도요보 가부시키가이샤 | Polyester film, laminate, and packaging body |
| US11298927B2 (en) | 2016-07-27 | 2022-04-12 | Toyobo Co., Ltd. | White polyester film, laminate, and packaging bag |
| WO2022102316A1 (en) | 2020-11-16 | 2022-05-19 | 三菱ケミカル株式会社 | Polyester-based sealant film |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011231330A (en) * | 2011-06-15 | 2011-11-17 | Toyobo Co Ltd | Packaging film and laminated packaging material using the packaging film |
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| WO2022102316A1 (en) | 2020-11-16 | 2022-05-19 | 三菱ケミカル株式会社 | Polyester-based sealant film |
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