JP3297891B2 - Laminated packaging material - Google Patents
Laminated packaging materialInfo
- Publication number
- JP3297891B2 JP3297891B2 JP28131193A JP28131193A JP3297891B2 JP 3297891 B2 JP3297891 B2 JP 3297891B2 JP 28131193 A JP28131193 A JP 28131193A JP 28131193 A JP28131193 A JP 28131193A JP 3297891 B2 JP3297891 B2 JP 3297891B2
- Authority
- JP
- Japan
- Prior art keywords
- packaging material
- ethylene
- terpolymer
- laminated packaging
- laminated
- 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.)
- Expired - Fee Related
Links
Landscapes
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は粉粒体もしくは液体を包
装するための積層包装材料に関し、特に粉粒体や液体を
自動包装機によって包装するのに適した積層包装材料に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated packaging material for packaging a granular material or a liquid, and more particularly to a laminated packaging material suitable for packaging a granular material or a liquid by an automatic packaging machine.
【０００２】[0002]
【従来の技術】従来より熱接着性を有する帯状の包装材
料を縦方向に移送させながら筒状とし、その合掌重合縁
部を熱シ−ルして筒状袋体とすると共に、該袋体内に粉
粒体もしくは液体を充填し、続いて横方向をヒ−トシ−
ルして自動的に袋内に内容物を充填する自動包装機は、
医薬品の包装や即席ラ−メン等の液体ス−プの包装等に
広く利用されている。そして、この自動包装機に供給す
る熱接着性を有する包装材料としてはポリエチレン系樹
脂、エチレン系アイオノマ−樹脂、特にエチレン・酢酸
ビニル共重合体、或は線状低密度ポリエチレンを二軸配
向ナイロンフィルム、二軸配向ポリエチレンテレフタレ
−トフィルムなどを基材として積層した積層包装材料が
使用されている。2. Description of the Related Art Conventionally, a band-shaped packaging material having a heat-adhesive property is formed into a tubular shape while being transported in a vertical direction, and the overlapped edge of the joint is heat-sealed to form a tubular bag. Is filled with granules or liquid, and then the heat
Automatic packaging machine that automatically fills the contents of the bag with
It is widely used for packaging pharmaceuticals and liquid soups such as instant ramen. As the packaging material having thermal adhesiveness to be supplied to the automatic packaging machine, a polyethylene-based resin, an ethylene-based ionomer resin, in particular, an ethylene-vinyl acetate copolymer, or a linear low-density polyethylene is a biaxially oriented nylon film. A laminated packaging material is used in which a biaxially oriented polyethylene terephthalate film or the like is laminated as a base material.
【０００３】しかし、これらの包装材料を用いて自動包
装機によって内容物を充填、シ−ルを行う際、シ−ル部
に内容物が存在すると、これらの包装材料は所謂噛み込
みシ−ル性に欠けるため高速で充填するとヒ−トシ−ル
が完全に行なわれず、充填時に内容物の洩れが生じ、そ
の結果歩留りが悪く、また、流通時に破袋や内容物の洩
れなどの恐れがあるため充填速度を十分にあげられず、
生産性に問題が生じていた。However, when the contents are filled and sealed by an automatic wrapping machine using these wrapping materials, if the contents exist in the seal portion, these wrapping materials are so-called biting seals. When filling at a high speed due to lack of properties, heat sealing is not completely carried out, causing leakage of the contents at the time of filling, resulting in poor yield, and risk of bag breakage and leakage of contents during distribution. Therefore, the filling speed cannot be increased enough,
There was a problem with productivity.
【０００４】[0004]
【発明が解決しようとする課題】そこで、上記の欠点を
改良し、充填物による噛み込みシ−ル性の良好な包装材
料について種々検討した結果、本発明を完成したもの
で、本発明の目的は充填物による噛み込みシ−ル性が良
好であって自動包装機によって高速包装するのに適した
積層包装材料を提供することである。Accordingly, the present invention has been completed as a result of various studies on a packaging material which improves the above-mentioned drawbacks and has good bite-sealing properties with a filler. As a result, the present invention has been completed. An object of the present invention is to provide a laminated packaging material which has a good sealing property with the filling material and is suitable for high-speed packaging by an automatic packaging machine.
【０００５】[0005]
【課題を解決するための手段】本発明の要旨は、基材
に、基材にエチレン・メタクリル酸又はアクリル酸・酢
酸ビニルからなる三元共重合体（以下、単に三元共重合
体ともいう）の層をポリエチレンもしくはその共重合
体、エチレン・アクリル酸エステル共重合体、及び、エ
チレン・アクリル酸共重合体の何れかのオレフィン系重
合体組成物からなる層を介して積層したことを特徴とす
る積層包装材料であり、その際、前記三元共重合体の層
にエチレン・α−オレフィン共重合体エラストマ−を添
加することが好ましい。また、前記オレフィン系重合体
組成物は密度０．９００〜０．９４０ｇ／ｃｍ 3 である
ことが好ましい。SUMMARY OF THE INVENTION The gist of the present invention is to provide a terpolymer comprising ethylene methacrylic acid or acrylic acid / vinyl acetate (hereinafter simply referred to as terpolymer).
Polyethylene) or its copolymer
, Ethylene-acrylate copolymer, and
Laminated packaging material characterized by being laminated via a layer made of any olefin-based polymer composition of a Tylene-acrylic acid copolymer , wherein the terpolymer layer is formed of ethylene. It is preferable to add an α-olefin copolymer elastomer. Further, it is preferable that the olefin polymer composition is a density 0.900~0.940g / cm 3.
【０００６】しかして、本願発明において使用する三元
共重合体のモノマ−比はエチレン：メタクリル酸又はア
クリル酸：酢酸ビニル＝９６〜７０：２〜８：５〜２２
（重量比）である。この三元共重合体は、低温シ−ル性
及びホットタック性は良好であるが強靱性に欠けている
欠点を有する。この欠点を改良するため、本発明におい
ては、積層に際してこの三元共重合体にエチレン・α−
オレフィン共重合体エラストマ−を添加しても良く、或
いはポリオレフィン系重合体組成物の層を介して基材と
三元共重合体とを積層しても良い。The terpolymer used in the present invention has a monomer ratio of ethylene: methacrylic acid or acrylic acid: vinyl acetate = 96 to 70: 2 to 8: 5 to 22.
(Weight ratio). This terpolymer has good low-temperature sealability and hot-tack property, but has a disadvantage of lacking toughness. In order to improve this disadvantage, in the present invention, ethylene / α-
An olefin copolymer elastomer may be added, or the base material and the terpolymer may be laminated via a layer of the polyolefin polymer composition.
【０００７】本発明において使用する上記の三元共重合
体としては、具体的に三井デュポンポリケミカル（株）
製ニュクレル（商品名）ＡＮが好ましく、これを積層す
る基材としてはポリエステル、ナイロン、配向ポリプロ
ピレン、及びその塩化ビニリデンコ−ト品、ポリカ−ボ
ネ−ト、アルミ箔、エチレン酢酸ビニルけん化重合体、
紙、合成紙等を単独もしくは適宜数種を複合化したフィ
ルムを使用する。また、本発明で使用するエチレン・α
−オレフィン共重合体エラストマ−とは柔軟性に富み、
通常タフマ−（三井石油化学（株）の登録商標）として
知られているポリオレフィン系樹脂改質剤のことであ
る。α−オレフィンとしては、具体的にプロピレン、ブ
テン−１、ヘキセン−１、４メチルペンテン−１、オク
テン−１、デセン−１、ドデセン−１等を挙げることが
できる。必要により三元共重合体にエチレン・α−オレ
フィン共重合体エラストマ−を添加する場合、その添加
量としては、三元共重合体１００重量部に対してエチレ
ン・α−オレフィン共重合体エラストマ−５〜３０重量
部であって５重量部以下では改質効果が低く、包装袋が
破袋することがあり、３０重量％を超えると耐圧強度は
増加するが柔軟性を増しブロッキングを生じやすい。
又、三元共重合体と積層して使用するオレフィン系重合
体組成物としては密度０．９００〜０．９４０ｇ／ｃｍ
3からなるポリエチレンもしくはその共重合体、エチレ
ン・アクリル酸エステル共重合体、エチレン・アクリル
酸共重合体が挙げられる。The terpolymer used in the present invention is specifically exemplified by Mitsui DuPont Polychemical Co., Ltd.
Nucrel (trade name) AN is preferred, and the base material on which it is laminated is polyester, nylon, oriented polypropylene, and its vinylidene chloride products, polycarbonate, aluminum foil, saponified ethylene vinyl acetate polymer,
A film in which paper, synthetic paper, or the like is used alone or in which several kinds are appropriately combined is used. Further, ethylene / α used in the present invention
-Olefin copolymer elastomer-is rich in flexibility,
It is a polyolefin-based resin modifier generally known as Tuffma (registered trademark of Mitsui Petrochemical Co., Ltd.). Specific examples of the α-olefin include propylene, butene-1, hexene-1, 4-methylpentene-1, octene-1, decene-1, dodecene-1, and the like. If necessary, when an ethylene / α-olefin copolymer elastomer is added to the terpolymer, the amount of the ethylene / α-olefin copolymer elastomer is 100 parts by weight of the terpolymer. When the amount is 5 to 30 parts by weight and not more than 5 parts by weight, the modifying effect is low, and the packaging bag may be broken. When the amount exceeds 30% by weight, the pressure resistance increases but the flexibility increases, and blocking tends to occur.
The olefin polymer composition used by laminating with the terpolymer has a density of 0.900 to 0.940 g / cm.
Polyethylene or copolymers thereof consisting of 3, an ethylene-acrylate copolymer, ethylene-acrylic acid copolymer.
【０００８】本願発明にかかる積層包装材料の三元共重
合体中には通常合成樹脂系フィルムに添加する酸化防止
剤、紫外線吸収剤等を適宜添加する。特に積層包装材料
のブロッキングを防止するためにアンチブロッキング剤
や充填機適性を向上させる為のスリップ剤を混合するこ
とが好ましく、アンチブロッキング剤としてはシリカ、
ゼオライト、カオリン等の無期系粉末が、また、スリッ
プ剤としては高級脂肪酸アミドなど有機系滑剤と称され
るものである。In the terpolymer of the laminated packaging material according to the present invention, an antioxidant, an ultraviolet absorber and the like which are usually added to a synthetic resin film are appropriately added. In particular, it is preferable to mix an anti-blocking agent or a slip agent for improving filling machine suitability to prevent blocking of the laminated packaging material, and silica, as the anti-blocking agent,
Non-permanent powders such as zeolite and kaolin are referred to as organic lubricants such as higher fatty acid amides as slip agents.
【０００９】本発明における積層包装材料の厚さとして
は、約３０〜７０μｍ程度であり、このうち三元共重合
体の厚さは約１０〜６０μｍ程度である。具体的に積層
包装材料における三元共重合体の厚さを例示すると表１
の通りである。In the present invention, the thickness of the laminated packaging material is about 30 to 70 μm, and the thickness of the terpolymer is about 10 to 60 μm. Table 1 shows specific examples of the thickness of the terpolymer in the laminated packaging material.
It is as follows.
【００１０】[0010]
【表１】 [Table 1]
【００１１】積層に際しては基材への三元共重合体の押
出ラミネ−ト、または予め三元共重合体とオレフィン系
重合体組成物のフィルム化を行い、それを基材と積層す
るドライラミネ−ト法またはフィルムサンド法を実施し
ても構わない。押出ラミネ−ト法を使用しオレフィン系
共重合体を介して積層する場合は、共押出し方式によっ
て行うことが最も好ましく、その際、押出し方式として
は押出しノズル内で積層するマルチニホ−ルドもしくは
フィ−ドブロックタイプの共押出し方式、それぞれの樹
脂を別々のダイで押出して積層するダンデム押出し方
式、或いは一台のＴダイより２枚の共押出ができるデュ
アルスロット方式等何れの方法を採用すれば良い。本発
明の積層包装材料によって包装されるものとしては液体
又は粉状体の何れでもよく、例えば即席ラ−メン用ス−
プ、めんつゆ、精製水、油などの調味液、入浴剤、粒状
食品、シャンプ−・リンス等何れでもよい。次に実施例
をもって本発明を具体的に説明する。When laminating, dry laminating is performed by extruding a terpolymer onto a substrate or forming a film of a terpolymer and an olefin polymer composition in advance and laminating the film with a substrate. Or a film sand method. When laminating via an olefin copolymer using an extrusion laminating method, it is most preferable to carry out lamination by a co-extrusion method. In this case, the extruding method is a multi-niole or a field laminated in an extrusion nozzle. Any method such as a co-extrusion method of a deblock type, a dandem extrusion method in which each resin is extruded and laminated by a separate die, or a dual slot method in which two sheets can be co-extruded from one T-die may be used. . What is packaged with the laminated packaging material of the present invention may be either a liquid or a powdery material.
, Soup, seasoning liquid such as purified water, oil, bathing agent, granular food, shampoo and rinse, etc. may be used. Next, the present invention will be described specifically with reference to examples.
【００１２】[0012]
【実施例及び比較例】以下、本発明を実施例及び比較例
に基づいて具体的に説明するが、本発明はこれらに限定
されるものではない、なお、実施例及び比較例における
性状は下記の方法によるものである。 実施例１〜７及び比較例１〜３ 基材として、厚さ３μｍのＰＶＰＣをしたコ−ト２軸延
伸ナイロンフィルム（１５μｍ）を使用し、これに、表
２に示す成分のシ−ル層を中間層を設け又は設けること
無く、表２に示す積層方法によって積層包装材料を製造
した。なお、積層包装材料の中間層とシ−ル層の厚みは
両方で５０μｍであった。Examples and Comparative Examples Hereinafter, the present invention will be specifically described based on examples and comparative examples, but the present invention is not limited to these examples. It is based on the method. Examples 1 to 7 and Comparative Examples 1 to 3 Coat biaxially stretched nylon film (15 μm) coated with PVPC having a thickness of 3 μm was used as a base material. With or without providing an intermediate layer, a laminated packaging material was produced by a lamination method shown in Table 2. In addition, the thickness of both the intermediate layer and the seal layer of the laminated packaging material was 50 μm.
【００１３】[0013]
【表２】 [Table 2]
【００１４】得られた積層包装材料を高速充填機を用い
て充填袋を作成し、その製品の評価を行い、その結果を
表３に示した。評価項目は次の方法で行った。 （高速充填性評価）株式会社小松製作所 ス−パ−コマ
ック 超高速液体充填機にて、７０×８０ｍｍ寸法で、
水（及び、しょう油）を約２０ｃｃ充填し、段階的に充
填速度を上げ、ヒ−トシ−ル部が安全に接着し、耐圧強
度が２５０ｋｇｆを超える充填速度値を比較評価した。
なお、ヒ−トシ−ル温度及び圧力はすべて一定条件で行
なった。A packing bag was prepared from the obtained laminated packaging material using a high-speed filling machine, and the product was evaluated. The results are shown in Table 3. Evaluation items were performed by the following methods. (Evaluation of high-speed filling property) Komatsu Ltd. Super-comac Ultra high-speed liquid filling machine with dimensions of 70 x 80 mm
Approximately 20 cc of water (and soy sauce) were filled, the filling speed was increased stepwise, the heat seal portion was safely adhered, and the filling speed value exceeding 250 kgf was evaluated comparatively.
The heat seal temperature and pressure were all kept constant.
【００１５】（耐圧強度）上記の水充填袋を一つずつ圧
縮試験機（オ−トグラフＡＧ−２０００Ａ 島津製作所
株式会社）にて圧縮し、破壊する強度の５ヶ平均値を測
定した。 （耐ブロッキング性）上記、積層包装材料をロ−ル状に
巻き取り、これを６０℃オ−ブンに４８時間入れ、その
後室温で２４時間冷却しリワインドした時の積層材料の
巻き出し安定走行性をテンション測定器を用いて比較評
価した。(Pressure Strength) Each of the water-filled bags was compressed one by one with a compression tester (Autograph AG-2000A, Shimadzu Corporation), and the average value of the breaking strength was measured. (Blocking resistance) The above-mentioned laminated packaging material is wound into a roll, placed in a 60 ° C. oven for 48 hours, then cooled at room temperature for 24 hours and unwound for stable running. Was evaluated comparatively using a tension measuring instrument.
【００１６】[0016]
【表３】 [Table 3]
【００１７】[0017]
【発明の効果】以上、説明したように本発明の積層包装
材料は、基材にエチレン・メタクリル酸・酢酸ビニルか
らなる三元共重合体を積層したもので、エチレン・α−
オレフィン共重合体エラストマ−を添加したり、オレフ
ィン系重合体組成物を介して積層包装材料とすることに
よって三元共重合体の欠点である強靱性の不足を改良
し、良好な積層包装材料とすることができ、これら積層
包装材料をもって高速自動包装機で液体や粉体などを高
速自動包装したとき、従来のエチレン・酢酸ビニル共重
合体や線状低密度ポリエチレンを使用したとき生ずる噛
み込みシ−ル不足現象を回避することができるので、高
速充填時における内容物の洩れは生ぜず、生産性が向上
し、また、耐圧強度も大きく、したがって輸送時におけ
る破袋、内容物の洩れ等も生じない等の効果を奏する。As described above, the laminated packaging material of the present invention is obtained by laminating a terpolymer composed of ethylene, methacrylic acid, and vinyl acetate on a base material.
By adding an olefin copolymer elastomer or forming a laminated packaging material via an olefin polymer composition, the lack of toughness, which is a drawback of the terpolymer, is improved, and a good laminated packaging material is obtained. When high-speed automatic packaging of liquids and powders with a high-speed automatic packaging machine is performed using these laminated packaging materials, the entrapment that occurs when conventional ethylene-vinyl acetate copolymer or linear low-density polyethylene is used. Since the shortage phenomenon can be avoided, the contents do not leak at the time of high-speed filling, the productivity is improved, and the pressure resistance is large.Therefore, the bag breaks during the transportation, the contents leak, etc. It produces effects such as not occurring.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−36441（ＪＰ，Ａ) 特開 平２−25327（ＪＰ，Ａ) 特開 平４−115946（ＪＰ，Ａ) 特開 平３−104636（ＪＰ，Ａ) 特開 昭59−164317（ＪＰ，Ａ) 特開 平２−258339（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 1/00 - 35/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-36441 (JP, A) JP-A-2-25327 (JP, A) JP-A-4-115946 (JP, A) JP-A-3-115 104636 (JP, A) JP-A-59-164317 (JP, A) JP-A-2-258339 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B32B 1/00-35 / 00
Claims (3)
ル酸・酢酸ビニルからなる三元共重合体の層をポリエチ
レンもしくはその共重合体、エチレン・アクリル酸エス
テル共重合体、及び、エチレン・アクリル酸共重合体の
何れかのオレフィン系重合体組成物からなる層を介して
積層したことを特徴とする積層包装材料。1. A polyethylene layer of terpolymer comprising ethylene-methacrylic acid or acrylic acid-vinyl acetate to the substrate
Ren or its copolymer, ethylene acrylate
Ter copolymer and ethylene-acrylic acid copolymer
A laminated packaging material characterized by being laminated via a layer made of any of the olefin-based polymer compositions.
記三元共重合体の層にエチレン・α−オレフィン共重合
体エラストマ−を添加したことを特徴とする積層包装材
料。2. The laminated packaging material according to claim 1, wherein an ethylene / α-olefin copolymer elastomer is added to said terpolymer layer.
が、密度０．９００〜０．９４０ｇ／ｃｍ 3 である請求
項１または請求項２のいずれかの項記載の積層包装材
料。3. A process according to claim 1 olefin polymer composition described, laminated packaging material according to one of claims 1 or claim 2 is the density 0.900~0.940g / cm 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28131193A JP3297891B2 (en) | 1993-11-10 | 1993-11-10 | Laminated packaging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28131193A JP3297891B2 (en) | 1993-11-10 | 1993-11-10 | Laminated packaging material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07132578A JPH07132578A (en) | 1995-05-23 |
| JP3297891B2 true JP3297891B2 (en) | 2002-07-02 |
Family
ID=17637326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28131193A Expired - Fee Related JP3297891B2 (en) | 1993-11-10 | 1993-11-10 | Laminated packaging material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3297891B2 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59164317A (en) * | 1983-03-10 | 1984-09-17 | Showa Denko Kk | Adhesive resin and its laminate |
| JPH0784043B2 (en) * | 1987-07-31 | 1995-09-13 | 三菱化学株式会社 | Method for producing aluminum vapor-deposited laminated film |
| JP2580268B2 (en) * | 1988-07-14 | 1997-02-12 | 三菱化学株式会社 | Manufacturing method of laminated aluminum film |
| JP2716514B2 (en) * | 1989-03-31 | 1998-02-18 | 住友ベークライト株式会社 | Laminate |
| NZ234427A (en) * | 1989-08-11 | 1993-12-23 | Grace W R & Co | Multilayer shrink film comprising six layers; vldpe and ethylene acrylate |
| JP3174882B2 (en) * | 1990-09-06 | 2001-06-11 | 大日本印刷株式会社 | Easy-open packaging |
-
1993
- 1993-11-10 JP JP28131193A patent/JP3297891B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07132578A (en) | 1995-05-23 |
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