JPH0278525A - Easily tearable film, its manufacture and laminated film and packaging laminated film, for which same is used - Google Patents
Easily tearable film, its manufacture and laminated film and packaging laminated film, for which same is usedInfo
- Publication number
- JPH0278525A JPH0278525A JP23157788A JP23157788A JPH0278525A JP H0278525 A JPH0278525 A JP H0278525A JP 23157788 A JP23157788 A JP 23157788A JP 23157788 A JP23157788 A JP 23157788A JP H0278525 A JPH0278525 A JP H0278525A
- Authority
- JP
- Japan
- Prior art keywords
- film
- easily tearable
- stretching
- laminated
- films
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000004806 packaging method and process Methods 0.000 title abstract description 16
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 12
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 12
- 239000004711 α-olefin Substances 0.000 claims abstract description 11
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 8
- 229920006254 polymer film Polymers 0.000 claims abstract description 5
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 4
- 229920000298 Cellophane Polymers 0.000 claims abstract description 3
- 229920006280 packaging film Polymers 0.000 claims description 2
- 239000012785 packaging film Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 12
- 238000010030 laminating Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 238000004512 die casting Methods 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 abstract 2
- 238000005098 hot rolling Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 238000003475 lamination Methods 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000005025 cast polypropylene Substances 0.000 description 5
- 235000013305 food Nutrition 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000005001 laminate film Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 241000238366 Cephalopoda Species 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 235000015067 sauces Nutrition 0.000 description 2
- 239000002453 shampoo Substances 0.000 description 2
- BLDFSDCBQJUWFG-UHFFFAOYSA-N 2-(methylamino)-1,2-diphenylethanol Chemical compound C=1C=CC=CC=1C(NC)C(O)C1=CC=CC=C1 BLDFSDCBQJUWFG-UHFFFAOYSA-N 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 244000056139 Brassica cretica Species 0.000 description 1
- 235000003351 Brassica cretica Nutrition 0.000 description 1
- 235000003343 Brassica rupestris Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004278 EU approved seasoning Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 240000005499 Sasa Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- QKSKPIVNLNLAAV-UHFFFAOYSA-N bis(2-chloroethyl) sulfide Chemical compound ClCCSCCCl QKSKPIVNLNLAAV-UHFFFAOYSA-N 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 229920006262 high density polyethylene film Polymers 0.000 description 1
- 235000008960 ketchup Nutrition 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 235000010746 mayonnaise Nutrition 0.000 description 1
- 239000008268 mayonnaise Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000010460 mustard Nutrition 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229940040359 salonpas Drugs 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 235000011888 snacks Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000013555 soy sauce Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 238000009461 vacuum packaging Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、引き裂きが容易な易裂性フィルムに関し、例
えば食品、薬品等の包装袋のシール基材フィルムとして
使用することができる。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an easily tearable film, which can be used as a seal base film for packaging bags for foods, medicines, etc., for example.
［従来の技術］
通常実施されるプラスチックフィルム又はシートの延伸
方法は、１軸延伸と２軸延伸とに大別される。[Prior Art] Ordinarily used methods for stretching plastic films or sheets are broadly classified into uniaxial stretching and biaxial stretching.
ｌ軸延伸では、延伸方向（ＭＤ）へ結晶配向及び非晶配
向が生じ、分子鎖が延伸方向に規則的に配列する結果、
延伸されたフィルムに延伸方向への易裂性が生じる。但
し、明確な易裂性を与えるためには高度の配向（分子鎖
の延伸方向への高度な配列）を与えることが必要であり
、通常５倍以上の１軸延伸が施される。In l-axis stretching, crystal orientation and amorphous orientation occur in the stretching direction (MD), and as a result of molecular chains being regularly arranged in the stretching direction,
The stretched film becomes easily tearable in the stretching direction. However, in order to provide clear tearability, it is necessary to provide a high degree of orientation (a high degree of alignment of the molecular chains in the stretching direction), and uniaxial stretching of 5 times or more is usually performed.
２軸延伸では、分子鎖が各々の延伸方向（ＭＤ及びＴＤ
）に配列するため、引裂き易くはなるが、引裂き方向を
１方向に限定できないため、さまざまな方向への引裂き
伝播が生じて、真っ直ぐな引裂きラインが得られず、フ
ィルムに易裂性を付与する延伸方法としては実用上不適
当である。In biaxial stretching, the molecular chains are aligned in each stretching direction (MD and TD).
), which makes it easier to tear, but since the tear direction cannot be limited to one direction, the tear propagates in various directions, making it impossible to obtain a straight tear line, making the film easy to tear. This is not suitable for practical use as a stretching method.
従って、従来１軸延伸を利用して、易裂性を有する、例
えば高密度ポリエチレン（ＨＤＰＥ）製１軸延伸フィル
ムが製作され、食品、薬品等の包装袋のラミネート用基
材フィルムとして利用されている。Therefore, conventionally, uniaxially stretched films made of, for example, high-density polyethylene (HDPE), which are easily tearable, have been produced using uniaxial stretching and used as base films for laminating packaging bags for foods, medicines, etc. There is.
（発明が解決しようとする課題コ
従来の易裂性１軸延伸フイルムの場合、易裂性を発現さ
せるために通常５倍以上の高度のｌ軸延伸を施している
ため、ヒートシール性が極めて悪くなり、ラミネートフ
ィルム（積層フィルム）のシール基材フィルムとして使
用することが困難であった。そこで、良好なヒートシー
ル性を得るために、裏基材層の上に易裂性フィルム層を
中間層として配し、この上にシール層を配した３層構造
より成るラミネートフィルムが使用されている。(Problem to be solved by the invention) In the case of conventional easily tearable uniaxially stretched films, the heat sealing properties are extremely poor because they are usually subjected to 5 times or more higher l-axis stretching in order to develop easy tearability. This made it difficult to use it as a sealing base film for laminated films.Therefore, in order to obtain good heat sealing properties, an easily tearable film layer was placed between the backing base layer and the sealing base film. A laminate film is used, which has a three-layer structure, which is arranged as a layer and on top of which is a sealing layer.
しかし、このようなラミネートフィルムによれば、裏基
材層と中間層とのラミネート工程及び更にこれとシール
層とのラミネート工程の２回のラミネート工程が必要と
なり、コスト高を招いていた。However, such a laminated film requires two lamination processes: a lamination process of the back base material layer and the intermediate layer, and a lamination process of this and the sealing layer, resulting in high costs.
また、シール層自体には易裂性がないため、ラミネート
フィルム全体としての易裂性が低下するという問題もあ
った。Furthermore, since the sealing layer itself does not have tearability, there is also the problem that the tearability of the laminate film as a whole decreases.
一方、弱延伸（延伸倍率１．０２〜１．２倍）を施すこ
とにより易裂性を若干有するようにしたｌ軸延伸フィル
ム（例えば弱延伸ＣＰＰ （キャスト・ポリプロピレン
）フィルム）が提案されている。しかし、これによれば
、適度のヒートシール性は得られるが、易裂性が不充分
であるために、引裂いた時の引き裂きラインが真っ直ぐ
にならず、見栄えが悪くなっていた。On the other hand, l-axis stretched films (e.g., weakly stretched CPP (cast polypropylene) films) have been proposed that are made slightly more easily tearable by subjecting them to weak stretching (stretching ratio 1.02 to 1.2 times). . However, although this method provides adequate heat-sealability, the tearability is insufficient, and the tear line when torn is not straight, resulting in poor appearance.
本発明は、易裂性に優れ、且つ良好なヒートシール性も
兼備した易裂性フィルム、その製造方法及びそれを用い
た積層フィルムと包装用積層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 provide an easily tearable film that has excellent tearability and good heat sealability, a method for producing the same, a laminated film using the same, and a laminated film for packaging.
［課題を解決するための手段］
本発明に係る易裂性フィルムは、１−ブテン（α−ブチ
レン）を主成分とするα−オレフィン系炭化水素重合体
フィルムが、延伸倍率１．１〜３．２倍の範囲で１軸延
伸されることにより製造されたものである。[Means for Solving the Problems] The easily tearable film according to the present invention is an α-olefin hydrocarbon polymer film containing 1-butene (α-butylene) as a main component at a stretching ratio of 1.1 to 3. It is produced by uniaxial stretching in the range of .2 times.
延伸倍率が１．１より小さい場合には、ヒートシール性
は良好であるが、易裂性は不良となり、また３、２倍よ
り大きい場合には、易裂性は良好であるが、ヒートシー
ル性は不良となる。従って、延伸倍率を１．１〜３．２
倍、好ましくは１．４〜２．８倍とすることにより、易
裂性及びヒートシール性が共に優れた１軸延伸フイルム
が得られる。When the stretching ratio is smaller than 1.1, the heat sealability is good but the easy tearability is poor, and when it is larger than 3 or 2 times, the easy tearability is good but the heat sealability is poor. Sexuality becomes poor. Therefore, the stretching ratio is 1.1 to 3.2.
By increasing the amount by a factor of 1.4 to 2.8 times, a uniaxially stretched film having excellent tearability and heat sealability can be obtained.
α−オレフィン系炭化水素重合体において、１−プテン
（α−ブチレン）以外のα−オレフィン系炭化水素の含
有率は、１５モル％以下（０％も含む）、好ましくは１
０モル％以下とする。１５モル％より多い場合には、非
品性となり、配向度が低下することにより、易裂性が劣
化する。In the α-olefin hydrocarbon polymer, the content of α-olefin hydrocarbons other than 1-butene (α-butylene) is 15 mol% or less (including 0%), preferably 1
The content shall be 0 mol% or less. When the amount is more than 15 mol %, the quality becomes poor and the degree of orientation decreases, resulting in deterioration in tearability.
１−ブテン以外の本発明において使用可能なα−オレフ
ィン系炭化水素の具体例としては、炭素数２．３及び５
〜１０のα−オレフィン系炭化水素を挙げることができ
る。Specific examples of α-olefin hydrocarbons other than 1-butene that can be used in the present invention include those having a carbon number of 2.3 and 5.
-10 α-olefinic hydrocarbons can be mentioned.
この易裂性フィルムの製造方法は、１−ブテンを主成分
とするα−オレフィン系炭化水素重合体フィルムを、８
０〜１００ ℃の加熱下で１．１〜３．２倍に１軸延伸
することを特徴とする。This method for producing an easily tearable film involves preparing an α-olefin hydrocarbon polymer film containing 1-butene as a main component.
It is characterized by uniaxial stretching of 1.1 to 3.2 times under heating at 0 to 100°C.
原反フィルムの成形法としては、Ｔダイキャスト法、イ
ンフレーシラン法等を使用することができる。As a method for forming the original film, a T-die casting method, an inflation silane method, etc. can be used.
１軸延伸法としては、熱ロール法、テンター法等を使用
することができる。As the uniaxial stretching method, a hot roll method, a tenter method, etc. can be used.
延伸の際、加熱温度が、８０℃より低い場合には加熱不
足のため、延伸が不均一となり、且つ熱固定が不充分で
あるため、大きな収縮が生じる。During stretching, if the heating temperature is lower than 80° C., insufficient heating will result in non-uniform stretching, and insufficient heat setting will result in large shrinkage.
また、１００°Ｃより高い場合には、フィルム原反がロ
ールに粘着して延伸が不可能になる。Further, if the temperature is higher than 100°C, the original film sticks to the rolls and cannot be stretched.
上記易裂性フィルムは、シール基材フィルムとして使用
し、積層フィルム（ラミネートフィルム）を作製するこ
とができる。The easily tearable film can be used as a seal base film to produce a laminated film.
また、この積層フィルムは、上記易裂性フィルムが熱可
塑性樹脂及び／又はセロハンより成るフィルムと積層形
成されたものであってもよい、このための熱可塑性樹脂
としては、例えばナイロン、ポリエチレン（ＬＬＤＩ’
Ｅ、ＨＤＰＲ，ＬＤＰＥ。Further, this laminated film may be formed by laminating the above-mentioned easily tearable film with a film made of a thermoplastic resin and/or cellophane. Examples of the thermoplastic resin for this purpose include nylon, polyethylene (LLDI), etc. '
E, HDPR, LDPE.
ＭＤＰＥ）、ポリプロピレン、ポリエステル、塩化ビニ
ル等を使用することができる。MDPE), polypropylene, polyester, vinyl chloride, etc. can be used.
更に、上記易裂性フィルムを最内層として包装用積層フ
ィルムを作製するこ・とができる。Furthermore, a packaging laminated film can be produced using the above-mentioned easily tearable film as the innermost layer.
なお、易裂性フィルムとの積層フィルムを作製するため
のラミネート方法としては、共押出、ドライラミネート
、押出ラミネート等の従来の方法を任意に採用すること
ができる。Note that as a lamination method for producing a laminated film with an easily tearable film, any conventional method such as coextrusion, dry lamination, extrusion lamination, etc. can be employed.
このように本発明に係る易裂性フィルムは、積層フィル
ムのシール基材フィルム（シーラントフィルム）として
、次のような具体的な用途例が挙げられる。As described above, the easily tearable film according to the present invention can be used as a sealing base film (sealant film) for a laminated film, as follows.
即ち、食品包装の分野では、（１）水産練製品の真空包
装（笹かまぼこ、魚・イカの燻製等）、（２）液体又は
粘稠体の調味料の包装（小袋としての用途も含む）（シ
ょうゆ、ソース、たれ、マヨネーズ、ケチャツプ、マス
タード等）、（３）漬物の包装（福神漬、大根漬等の各
種漬物）、（４）つまみ類の包装（裂きイカ等の珍味類
、ピーナツ等）である。In other words, in the field of food packaging, (1) vacuum packaging of fish paste products (sasa kamaboko, smoked fish/squid, etc.), (2) packaging of liquid or viscous seasonings (including use as sachets) (soy sauce, sauce, sauce, mayonnaise, ketchup, mustard, etc.), (3) Packaging of pickles (various pickles such as Fukujinzuke, Daikonzuke, etc.), (4) Packaging of snacks (delicacies such as split squid, peanuts, etc.).
また、食品以外の包装分野では、（１）液体シャンプー
、液体リンス等の小袋包装、（２）粉末シャンプー等の
包装、（３）サロンパス（商品名）等の湿布薬の包装で
ある。In addition, in the field of packaging other than food, there are (1) sachet packaging for liquid shampoo, liquid conditioner, etc., (2) packaging for powdered shampoo, etc., and (3) packaging for poultices such as Salonpas (trade name).
この易裂性フィルムは、単体フィルムとしても使用する
ことができ、その用途として次のような具体例を挙げる
ことができる。This easily tearable film can also be used as a single film, and specific examples of its uses include the following.
即ち、（１）機械部品、ねし等の部品を包装するための
包装フィルム、（２）カセットテープ等を集積包装し、
ひねることによりフィルムをカットして個別のち出しを
可能とするたのシェリンクフィルムである。That is, (1) packaging films for packaging parts such as machine parts and screws, (2) cassette tapes, etc. are integrated and packaged,
It is a shell-linked film that can be cut into individual pieces by twisting it.
［実施例］
ス」１倒」−二」−
易裂性フィルムの実施例を、その製造方法と併せて説明
する。[Example] Example of an easily tearable film will be described together with its manufacturing method.
■−ブテンを主成分とするα−オレフィン系炭化水素（
例えば１−ブテン９５モル％、その他のα−オレフィン
系炭化水素５モル％）重合体を原料として使用し、Ｔダ
イキャスト機により厚さ５０μ及び１００μのフィルム
原反を成形した。このＴダイキャスト機は、コート・ハ
ンガー型ダイか備えられ、その具体的仕様は、スクリエ
ー径が６５閣、リップ開度がＩＩＩＩＩｍである。また
、フィルム原反成形時の条件は、成形温度が２００ ℃
１成形速度が３０ｍ／分である。■-α-olefin hydrocarbon whose main component is butene (
For example, a polymer (95 mol% of 1-butene and 5 mol% of other α-olefin hydrocarbons) was used as a raw material, and original films with thicknesses of 50 μm and 100 μm were formed using a T-die casting machine. This T die-casting machine is equipped with a coat-hanger type die, and its specific specifications are that the diameter of the scree is 65 mm and the opening degree of the lip is IIIm. In addition, the conditions for forming the original film are that the forming temperature is 200°C.
1 The molding speed is 30 m/min.
次に、熱ロール式１軸延伸機〔（■日本製鋼所型］を使
用し、このフィルム原反を下記の条件で１軸延伸した。Next, using a hot roll type uniaxial stretching machine [(Japan Steel Works, Ltd. model)], this film material was uniaxially stretched under the following conditions.
予熱ロール温度・・・・・・・・・９０℃（許容範囲８
０〜１００°Ｃ）
加熱ロール温度・・・・・・・・・９５”Ｃ（許容範囲
８０〜１００ ℃）
延伸ロール温度・・・・・・・・・９５ ℃（許容範囲
８０〜１００ ℃）
アニーリングロール温度・・・９０ ”Ｃ（許容範囲８
０〜１００ °Ｃ）
入側ライン速度・・・・・・・・・１０ｍ／分出側ライ
ン速度・・・・・・・・・１１〜３２ｍ／分ＭＤ延伸倍
率・・・・・・・・・・・・１．１〜３．２延伸倍率を
１．２，１．６．２．０，２．４及び３．１に選び、上
記条件で原反フィルムを１軸延伸し、これにより得られ
たフィルムをそれぞれ実施例１〜５に係る易裂性フィル
ムとする。なお、延伸倍率が１．６倍までのものについ
ては厚さが５０μの原反フィルムを使用し、それより延
伸倍率が大きなものについては１００μの原反フィルム
を使用した。Preheating roll temperature...90℃ (tolerance range 8
0-100°C) Heating roll temperature: 95”C (tolerable range: 80-100°C) Stretching roll temperature: 95°C (allowable range: 80-100°C) ) Annealing roll temperature...90"C (tolerance range 8
0 to 100 °C) Inlet line speed: 10 m/min Output line speed: 11 to 32 m/min MD stretch ratio: ...1.1 to 3.2 The stretching ratio was selected as 1.2, 1.6, 2.0, 2.4 and 3.1, and the raw film was uniaxially stretched under the above conditions. The films obtained in this manner are referred to as easily tearable films according to Examples 1 to 5, respectively. Note that for the stretching ratio up to 1.6 times, a raw film with a thickness of 50 μm was used, and for the stretching ratio larger than that, a raw film with a thickness of 100 μm was used.
これらのフィルムについて、厚さ、引張弾性率、引張強
度、破咋伸び、引裂き強さ、延伸方向への引裂き易さ、
引裂き後の外観、ヒートシール強度及びヒートシール部
の外観を測定した結果を表１に示す。Regarding these films, the thickness, tensile modulus, tensile strength, elongation at break, tear strength, ease of tearing in the stretching direction,
Table 1 shows the results of measuring the appearance after tearing, heat-sealing strength, and appearance of the heat-sealed part.
なお、各フィルムの引張特性及び引裂き強さの値は、Ｍ
Ｄ（延伸方向）／ＴＤ（延伸方向に対する横方向）の測
定値を示す。また、延伸方向への引裂き易さは、フィル
ムに切込みを入れ、この切込みから延伸方向に手で引き
裂いた時の引裂き易さを測定したもの、また、引裂き後
の外観は、引裂き部のけば立ち、引裂きラインの直線性
（引裂きラインの直線とのずれ）を目視で判断したもの
である。ヒートシール強度は、熱傾斜試験機〔■東洋精
機製作所製］を使用して、シール圧力２ｋｇ／ｃｄ、シ
ール時間１秒でヒートシールしたもののシール強度を示
し、ヒートシール部の外観は、シール部の皺、収縮によ
る波打ちの状態を目視で判断したものである０表中、Ｏ
は良、×は不良を示す。In addition, the tensile properties and tear strength values of each film are M
Measured values of D (stretching direction)/TD (transverse direction to the stretching direction) are shown. Furthermore, the ease of tearing in the stretching direction was determined by making a cut in the film and measuring the ease of tearing when manually tearing from the cut in the stretching direction. The straightness of the tear line (deviation from the straight line of the tear line) was visually judged. The heat seal strength indicates the seal strength obtained by heat sealing using a thermal gradient tester (manufactured by Toyo Seiki Seisakusho) at a sealing pressure of 2 kg/cd and a sealing time of 1 second. In the 0 table, which is a visual judgment of the wrinkles and waving caused by shrinkage, O
indicates good, and × indicates defective.
６〜１１
本発明に係る易裂性フィルムをシール基材フィルムとし
て使用し、これと裏基材フィルムとをドライラミネート
した場合の積層フィルムの実施例を説明する。6-11 Examples of laminated films in which the easily tearable film according to the present invention is used as a seal base film and this and a back base film are dry laminated will be described.
易裂性フィルムとしては、実施例１〜５で製造したフィ
ルムをそのまま使用し、裏基材フィルムとしては、２軸
延伸ナイロンフイルム（ｏＮｙ）〔東洋紡■製、Ｎｌ１
００タイプ〕及び２軸延伸ポリエステルフイルム（ＰＥ
Ｔ）（東洋紡■製、７４１００タイプ〕を使用した。As the easily tearable film, the films produced in Examples 1 to 5 were used as they were, and as the back base film, biaxially stretched nylon film (oNy) [manufactured by Toyobo ■, Nl1
00 type] and biaxially oriented polyester film (PE
T) (manufactured by Toyobo ■, type 74100) was used.
ラミネート加工は、次の条件で行った。Lamination processing was performed under the following conditions.
接着剤の種類・・・ＡＤ−３０８Ａ及びＡＤ−３０８Ｂ
〔商品名、東洋モートン合菊製〕。Type of adhesive: AD-308A and AD-308B
[Product name: Toyo Morton Gigiku].
酢酸エチルを溶剤として、接着剤 固形濃度を３０％に調整した。Adhesive using ethyl acetate as a solvent The solid concentration was adjusted to 30%.
接着剤の塗布■・・・２．４ｇ／ｎ？。グラビアコータ
ーを使用して塗布量を調整した。Adhesive application■...2.4g/n? . The coating amount was adjusted using a gravure coater.
ラミネート加工・・・裏基材フィルムに接着剤を塗布し
、８０°Ｃで３０秒間熱風乾燥し
た後、ニップロール（圧力４ｋｇ／
ｃｄ ）により裏基材フィルムと易裂
性フィルムとを圧着した。Lamination processing: After applying an adhesive to the backing film and drying with hot air at 80°C for 30 seconds, the backing film and the easily tearable film were pressed together using nip rolls (pressure: 4 kg/cd).
エージング・・・ラミネート加工後、４０°Ｃに保つた
恒温室内で、２４時間エージング
を行い、接着剤を硬化させた。Aging: After lamination, aging was performed for 24 hours in a constant temperature room kept at 40°C to harden the adhesive.
このような条件下でラミネートした積層フィルムを実施
例６〜１１に係るフィルムとし、各々の厚さ、引張弾性
率、破断伸び、引裂き強さ、延伸方向への引裂き易さ、
引裂き後の外観、ヒートシール強度及びヒートシール部
の外観を測定した結果を表２に示す。The laminated films laminated under such conditions were used as films according to Examples 6 to 11, and the respective thicknesses, tensile modulus, elongation at break, tear strength, ease of tearing in the stretching direction,
Table 2 shows the results of measuring the appearance after tearing, heat-sealing strength, and appearance of the heat-sealed part.
ｍｍ１し医」−ヱ」−
延伸倍率を１．０及び３．３に選び、その他の条件は上
記実施例と同様にして原反フィルムをｌ軸延伸し、これ
により得られたフィルムをそれぞれ比較例１及び２に係
るフィルムとする。また、一般にシール基材フィルムと
した使用されている無延伸の直鎖状低密度ポリエチレン
フィルム〔Ｌ−ＬＤＰＥフィルム：東七口化学■製、Ｔ
ＵＸ−ＦＣタイプ〕及び無延伸ポリプロピレンフィルム
（ｃｐｐフィルム二東七口化学■製、ＷＣＸタイプ〕を
比較例３及び４のフィルムとする。更に、市販の高密度
パリエチレン易裂性フィルム〔１軸延伸ＨＤＰＥフィル
ム：三井東圧化学ｅｌ製、「ハイプロン」 （商品名）
Ｈタイプ〕を比較例５とし、弱延伸ＣＰＰフィルムの１
例として、上記の無延伸ＣＰＰ Ｃ束七口化学■製、Ｗ
ＣＸタイプ〕を実施例と同様にして１．２倍に延伸した
フィルムを比較例６に係るフィルムとする。The original film was stretched along the l-axis with the stretching ratios selected as 1.0 and 3.3, and other conditions were the same as in the above example, and the resulting films were compared. Let it be the films according to Examples 1 and 2. In addition, an unstretched linear low-density polyethylene film [L-LDPE film: manufactured by Higashi Shichiguchi Kagaku ■, T
UX-FC type] and unstretched polypropylene film (WCX type, manufactured by CPP Film Nito Shichikuchi Kagaku ■) were used as the films of Comparative Examples 3 and 4. Furthermore, a commercially available high-density paryethylene easily tearable film [uniaxial Stretched HDPE film: manufactured by Mitsui Toatsu Chemical EL, "Hypron" (product name)
H type] was taken as Comparative Example 5, and weakly stretched CPP film 1
As an example, the above unstretched CPP C bundle manufactured by Nanakuchi Kagaku ■, W
CX type] was stretched to 1.2 times in the same manner as in the example, and a film according to comparative example 6 was obtained.
これらのフィルムについて、実施例と同様、厚さ、引張
弾性率、引張強度等を測定した結果を表１に示す。Table 1 shows the results of measuring the thickness, tensile modulus, tensile strength, etc. of these films in the same manner as in the Examples.
、 ′ ７〜１２
比較例１〜６のフィルムをシール基材フィルムとして使
用し、これと裏基材とをドライラミネートした場合の積
層フィルムについて説明する。, ' 7-12 A laminated film obtained by using the films of Comparative Examples 1 to 6 as a sealing base film and dry laminating this and a back base material will be described.
ラミネート加工の条件は、実施例と同様にして２軸延伸
ナイロンフイルムとの積層フィルムを製作した。A laminated film with a biaxially stretched nylon film was produced under the same laminating conditions as in the examples.
得、られたラミネートフィルムを比較例７〜１２に係る
フィルムとし、各々の厚さ、引張弾性率、引張強度等の
測定結果を表２に示す。The obtained laminate films were used as films according to Comparative Examples 7 to 12, and the measurement results of each thickness, tensile modulus, tensile strength, etc. are shown in Table 2.
表１より、実施例１〜５に係る易裂性フィルムは、比較
例１に係る無延伸の１−ブテン系フィルムと比べて、充
分満足し得るヒートシール強度を保持しながら、優れた
易裂性及び引張り特性を有していることが判る。また、
比較例２に係るフィルムに比べて、ヒートシール強度が
充分に高いレヘルであることも明白である。From Table 1, it can be seen that the easily tearable films according to Examples 1 to 5 have excellent tearability while maintaining sufficiently satisfactory heat sealing strength compared to the unstretched 1-butene film according to Comparative Example 1. It can be seen that the material has good elasticity and tensile properties. Also,
It is also clear that the heat sealing strength is sufficiently high compared to the film of Comparative Example 2.
更に、比較例３〜６に係る無延伸及び延伸フィルムと比
べて、引裂き易さ、引裂き後の外観、ヒートシール強度
及びヒートシール部の外観についても優れた特性を有し
ていることが判る。Furthermore, it can be seen that the films have excellent properties in terms of ease of tearing, appearance after tearing, heat-sealing strength, and appearance of the heat-sealed portion, compared to the unstretched and stretched films of Comparative Examples 3 to 6.
表２より、実施例６〜１１に係る易裂性フィルムは、比
較例７〜１２に係るフィルムと比べて、積層フィルムの
シール基材フィルムとして使用する場合にも、易裂性、
ヒートシール強度及び引張特性のいずれについても優れ
た特性を有していることが判る。From Table 2, it can be seen that the easily tearable films according to Examples 6 to 11 were more easily tearable than the films according to Comparative Examples 7 to 12 even when used as seal base films of laminated films.
It can be seen that it has excellent properties in terms of both heat seal strength and tensile properties.
［発明の効果］
本発明によれば、易裂性及びヒートシール性が共に優れ
た易裂性フィルムを得ることができる。[Effects of the Invention] According to the present invention, an easily tearable film having excellent tearability and heat sealability can be obtained.
また、この易裂性フィルムは、積層フィルム、包装用積
層フィルムを製造する場合のフィルムとしても好適であ
る。This easily tearable film is also suitable as a film for producing laminated films and packaging laminated films.
出願人 出光石油化学株式会社Applicant: Idemitsu Petrochemical Co., Ltd.
Claims (5)
水素重合体フィルムが、延伸倍率１．１〜３．２倍の範
囲で１軸延伸されることにより製造された易裂性フィル
ム。(1) An easily tearable film produced by uniaxially stretching an α-olefin hydrocarbon polymer film containing 1-butene as a main component at a stretching ratio of 1.1 to 3.2 times.
れた積層フィルム。(2) A laminated film comprising a layer made of the easily tearable film described in item 1.
／又はセロハンより成るフィルムと積層形成された積層
フィルム。(3) A laminated film in which the easily tearable film described in item 1 is laminated with a film made of a thermoplastic resin and/or cellophane.
された包装用積層フィルム。(4) A laminated packaging film comprising the easily tearable film described in item 1 as the innermost layer.
水素重合体フィルムを、８０〜１００℃の加熱下で１．
１〜３．２倍に１軸延伸することを特徴とする易裂性フ
ィルムの製造方法。(5) An α-olefin hydrocarbon polymer film containing 1-butene as a main component was heated at 80 to 100°C under 1.
A method for producing an easily tearable film, which comprises uniaxially stretching 1 to 3.2 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23157788A JPH0278525A (en) | 1988-09-14 | 1988-09-14 | Easily tearable film, its manufacture and laminated film and packaging laminated film, for which same is used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23157788A JPH0278525A (en) | 1988-09-14 | 1988-09-14 | Easily tearable film, its manufacture and laminated film and packaging laminated film, for which same is used |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0278525A true JPH0278525A (en) | 1990-03-19 |
| JPH0575572B2 JPH0575572B2 (en) | 1993-10-20 |
Family
ID=16925700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23157788A Granted JPH0278525A (en) | 1988-09-14 | 1988-09-14 | Easily tearable film, its manufacture and laminated film and packaging laminated film, for which same is used |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0278525A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002193319A (en) * | 2000-12-28 | 2002-07-10 | Toyo Seikan Kaisha Ltd | Packaging bag |
| JP2009523198A (en) * | 2006-01-11 | 2009-06-18 | クーエフツィー エッセ エッレ エーレ | Safety helmet with integrated lighting signal device, especially for motorcycle drivers |
| WO2018084158A1 (en) * | 2016-11-02 | 2018-05-11 | 株式会社ユポ・コーポレーション | Film, roll and adhesive tape |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5096671A (en) * | 1973-12-27 | 1975-07-31 | ||
| JPS6227981A (en) * | 1985-07-29 | 1987-02-05 | 島 顕侑 | Cutter |
-
1988
- 1988-09-14 JP JP23157788A patent/JPH0278525A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5096671A (en) * | 1973-12-27 | 1975-07-31 | ||
| JPS6227981A (en) * | 1985-07-29 | 1987-02-05 | 島 顕侑 | Cutter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002193319A (en) * | 2000-12-28 | 2002-07-10 | Toyo Seikan Kaisha Ltd | Packaging bag |
| JP4688009B2 (en) * | 2000-12-28 | 2011-05-25 | 東洋製罐株式会社 | Packaging bag |
| JP2009523198A (en) * | 2006-01-11 | 2009-06-18 | クーエフツィー エッセ エッレ エーレ | Safety helmet with integrated lighting signal device, especially for motorcycle drivers |
| WO2018084158A1 (en) * | 2016-11-02 | 2018-05-11 | 株式会社ユポ・コーポレーション | Film, roll and adhesive tape |
| US11524489B2 (en) | 2016-11-02 | 2022-12-13 | Yupo Corporation | Film, roll and adhesive tape |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0575572B2 (en) | 1993-10-20 |
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