JPS6228226A - Unidirectionally heat-shrinkable tubular film and manufacture thereof - Google Patents
Unidirectionally heat-shrinkable tubular film and manufacture thereofInfo
- Publication number
- JPS6228226A JPS6228226A JP16957185A JP16957185A JPS6228226A JP S6228226 A JPS6228226 A JP S6228226A JP 16957185 A JP16957185 A JP 16957185A JP 16957185 A JP16957185 A JP 16957185A JP S6228226 A JPS6228226 A JP S6228226A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- heat
- tubular film
- film
- bottle
- 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 abstract description 9
- 229920000728 polyester Polymers 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000001788 irregular Effects 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 229920006300 shrink film Polymers 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 7
- 229920006257 Heat-shrinkable film Polymers 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- 239000004645 polyester resin Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical group OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- REIDAMBAPLIATC-UHFFFAOYSA-N 4-methoxycarbonylbenzoic acid Chemical compound COC(=O)C1=CC=C(C(O)=O)C=C1 REIDAMBAPLIATC-UHFFFAOYSA-N 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- WOZVHXUHUFLZGK-UHFFFAOYSA-N terephthalic acid dimethyl ester Natural products COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000009966 trimming Methods 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)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は加熱収縮率か大きく、かつその収縮状態が一方
向性であるシームレスポリエステルチューブ状フィルム
で、特にラベルシュリンク、キャップシール等の用途と
して好適な一方向性熱収縮チューブ状フィルム及びその
製造方法に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention is a seamless polyester tubular film that has a high heat shrinkage rate and a unidirectional shrinkage state, and is particularly suitable for use in label shrinks, cap seals, etc. The present invention relates to a suitable unidirectional heat-shrinkable tubular film and a method for producing the same.
（従来の技術）
近年、消・警音へのサービスと法的義務項目の増加など
商品内容の表示事項が増える傾向のある中で、ラベルシ
ュリンクは３６０°円周張りであるため、表示面積を大
きくとれ、しかも破瓶防止性、耐水性、意匠性にも浸れ
ているので数多いラベルシステムの中で特に注目を集め
て着実に伸びている。(Conventional technology) In recent years, there has been an increase in the number of items to be displayed on product contents, such as the increase in services for muting/alarming, and the increase in legally required items.Since the shrink label is 360° circumferential, it has become necessary to reduce the display area. Because it is large in size, has anti-bottle breakage properties, is water resistant, and has a great design, it is attracting particular attention among the many label systems and is steadily growing.
従来、ラベルシュリンクフィルムの製造方法の大半は、
Ｔダイ法あるいは流延法で製膜したポリ塩化ビニール、
ポリスチレン、ポリプロピレン等の樹脂からなる未延伸
フラットフィルムをテンター法により横一軸延伸を行な
うかあるいはロール等により縦−軸延伸を行なって得た
一軸延伸フィルムに対して印刷、スリットを行なった後
センターシールを施しチューブ状にして使用されている
。Traditionally, most of the manufacturing methods for label shrink film are
Polyvinyl chloride film formed by T-die method or casting method,
An unstretched flat film made of a resin such as polystyrene or polypropylene is horizontally uniaxially stretched using a tenter method or vertically axially stretched using a roll or the like.The uniaxially stretched film is then printed and slit, followed by a center seal. It is used in the form of a tube.
（発明が解決しようとする問題点）
しかしながら、ポリ塩化ビニール製のラベルシュリンク
フィルムは、溶断シール強度、低温強度などに欠点があ
り、しかも焼却時に有毒ガスを発生。(Problems to be Solved by the Invention) However, label shrink films made of polyvinyl chloride have drawbacks such as fusing seal strength and low-temperature strength, and furthermore, they generate toxic gas when incinerated.
するなどの欠点がある。There are drawbacks such as:
また、ポリプロピレン製のラベルシュリンクフィルムは
、比較的高温でないと熱収縮性が発現されないこと、及
び低温収縮性に欠点がある。Furthermore, label shrink films made of polypropylene have drawbacks in that they do not exhibit heat shrinkability unless the film is at a relatively high temperature, and that they have poor low-temperature shrink properties.
更にポリスチレン製のラベルシュリンクフィルムは、収
縮後の結束力が小さいために被シュリンク体の複雑な凹
凸状や、くびれが大きいガラス瓶等に密着した収縮被覆
を行うことができない、こと、及び焼却時に黒煙を発し
環境衛生上好ましくないことなどの問題点がある。Furthermore, polystyrene label shrink film has a small cohesive force after shrinkage, so it cannot be used to shrink-cover objects that have complex irregularities or have large constrictions, such as glass bottles, and it also tends to blacken when incinerated. There are problems such as emitting smoke and being unfavorable in terms of environmental hygiene.
一方、ポリエステル系樹脂を使用した熱収縮フィルムは
、
（１）収縮速度が速いためシュリンクトンネルラインの
短縮化及び収縮包装の高速化を図ることができる、
（２）収縮応力が大きいため、被包装物を強い結束力で
保持する、
（３）透明性、光沢性に優れ、かつ印刷適性に優れてい
ることからディスプレー効果がアップする、
（４）低温から高温に至る迄の機械的強度が大きく、被
包装物の保護性に優れている、
（５）紫外線を遮断するため、紫外線によって変退色あ
るいは変質する品物の包装に優れている、（６）焼却時
、有害ガス、黒煙等を出すこともなく、又燃焼発熱量ら
比較的小さく作業環境上安全に使用できる、
等の数々の特徴を有しているがその反面ヒートシール性
に乏しい難点がある。On the other hand, heat-shrinkable films using polyester resin (1) have a high shrinkage speed, which allows for shorter shrink tunnel lines and faster shrink wrapping; (2) have higher shrinkage stress, so Holds objects with strong cohesion. (3) Excellent transparency, gloss, and printability, which improves display effects. (4) High mechanical strength from low to high temperatures. (5) Because it blocks ultraviolet rays, it is excellent for packaging items that discolor, fade, or change in quality due to ultraviolet rays. (6) When incinerated, it emits harmful gases, black smoke, etc. Although it has many characteristics such as being safe to use in the working environment as it has a relatively small combustion heat value, it has the disadvantage of poor heat sealability.
近年この問題を改善するためにヒートシールが可能なコ
ーポリエステルを使用した熱収縮フィルムの開発がなさ
れているが、ヒートシールを施こした部分は、部分的な
収縮が生じるため、収縮包装後に於いても仕上り外観が
良好で皺が無く且つ密着被覆されたものは得られにくい
問題がある。In recent years, heat-shrinkable films using copolyester that can be heat-sealed have been developed to improve this problem. However, there is a problem in that it is difficult to obtain a product with a good finished appearance, no wrinkles, and an adhesive coating.
更に、ラベル用シュリンクフィルムのセンターソールを
行なった部分は実質的には同じ厚みになりにくく、該シ
ール部が凸状となるため以下の様な問題が生じている。Furthermore, it is difficult for the center-soled portion of the shrink film for labels to have substantially the same thickness, and the sealed portion becomes convex, resulting in the following problems.
即ち、シール部が瓶等の容器の底部に位置する場合は、
該容器への僅かの衝撃で倒れる恐れがあり、又シール部
が容器の側部に位置する場合は、輸送時にシール部が他
の容器の側面に接触してフィルムが破れたり、印刷が剥
がれたりすることがある。That is, if the seal part is located at the bottom of a container such as a bottle,
A slight impact to the container may cause it to topple over, and if the seal is located on the side of the container, the seal may come into contact with the side of another container during transportation, causing the film to tear or the printing to peel off. There are things to do.
また、ラベル用ンユリンクフィルムのセンターソールを
行なった部分は、一般に衝撃強度か弱（、特に炭酸飲料
のように内圧の加わるガラス瓶の場合、瓶が落下衝撃等
を受けて破瓶するときにフィ性がある。In addition, the center sole part of the Nyulink film for labels generally has low impact strength (particularly in the case of glass bottles that are subject to internal pressure, such as carbonated drinks, when the bottle breaks due to a drop impact, etc., the impact strength is low). There is sex.
以上のような理由によりポリエステル系ラベルシュリン
クフィルムが未だ実用化に迄至っていないものと考えら
れる。It is considered that for the reasons mentioned above, polyester label shrink films have not yet been put into practical use.
（問題点を解決するための手段）
本発明は、従来のラベルシュリンクフィルムにおける上
記の如き問題点を改善することのできる、ポリエステル
からなるシームレスの一方向性熱収縮チューブ状フィル
ムとその製造方法を提供することを目的とするものであ
って、その要旨とするところは、先ず、本願の第１発明
たる一方向性熱収縮フィルムについていえば、非晶性ポ
リエステルを主体とするシームレスデユープ状フィルム
において、
（縦方向熱収縮率）／（幅方向熱収縮率）≦０．３で且
つ、１００℃熱水中１０秒間浸漬時における前記幅方向
熱収縮率が３５％以上であることを特徴とするものであ
り、また、本願の第２発明たる上記一方向性熱収縮フィ
ルムの製造方法についていえば、非晶性ポリエステルを
主体とするヂューブ状原反を配向温度範囲内の温度に加
熱して同時二輪延伸を行った後二軸延伸デユープ内部に
気体を圧入し、加熱下において該延伸チューブの幅方向
を緊張状態で保持しつつ、縦方向に（
縦方向延伸倍率−１）／（縦方向延伸倍率）×（１〜０
．７５）Ｘ Ｉ Ｏ０％
の範囲で弛緩させることを特徴とするもので蔓る。(Means for Solving the Problems) The present invention provides a seamless unidirectional heat-shrinkable tubular film made of polyester and a method for producing the same, which can improve the above-mentioned problems in conventional label shrink films. First, regarding the unidirectional heat shrinkable film, which is the first invention of the present application, it is a seamless duplex film mainly made of amorphous polyester. The film is characterized in that (longitudinal heat shrinkage rate)/(width direction heat shrinkage rate)≦0.3, and the widthwise heat shrinkage rate when immersed in 100°C hot water for 10 seconds is 35% or more. Regarding the method for manufacturing the unidirectional heat-shrinkable film, which is the second invention of the present application, a tube-shaped original film mainly made of amorphous polyester is heated to a temperature within the orientation temperature range. After simultaneous two-wheel stretching, gas is injected into the inside of the biaxially stretched duplex, and while the width direction of the stretched tube is kept under tension under heating, it is direction stretch ratio) x (1 to 0
．． 75) It is characterized by relaxing in the range of X I O 0% and is popular.
以下、本願の上記第１、第２両発明の詳細な説明する。Hereinafter, both the first and second inventions of the present application will be described in detail.
本願第１、第２各発明が対象とする一方向性熱収縮チュ
ーブ状フィルムを構成する素材のポリエステルは、非晶
性のものを主体にするものであり、たとえばエチレング
リコールとテレフタール酸、または、テレフタル酸ツメ
チルとを反応させる際にイソフタル酸または１−４−ン
クロヘキサンジメタノール等で変性したものである。The polyester that is the material constituting the unidirectional heat-shrinkable tubular film targeted by the first and second inventions of the present application is mainly amorphous, such as ethylene glycol and terephthalic acid, or It is modified with isophthalic acid or 1-4-chlorohexanedimethanol or the like when reacting with methyl terephthalate.
非晶性ポリエステルとしては、例えばイーストマンケミ
カル社製ＰＥＴＣ； ６７６３を挙げるこ、とができる
。Examples of the amorphous polyester include PETC 6763 manufactured by Eastman Chemical Company.
本願第１、第２各発明において使用する原料を非晶性ポ
リエステルを主体にすることに限定したｌ二
理由は、結晶性ポリエステルを主体翫すると、二軸延伸
デユープを加熱下において、幅方向（以下、ＴＤと略記
する）を緊張状態で保持しつつ、縦方向（以下、ＭＤと
略記する）を弛緩させて目的とする一方向性熱収縮チュ
ーブ状フィルムを得ようとしても、該フィルムは加熱時
に結晶化が進むため、ＭＤ及びＴＤ共に熱収縮率が低下
ｊ、て本願第１発明において目的とするＴＤの熱収縮率
（熱水１００℃ＩＯ秒間）が３５％以上の高収縮性のも
のは得られないからである。The reason for limiting the raw materials used in the first and second inventions of the present application to mainly amorphous polyester is that when crystalline polyester is used as the main material, the biaxially stretched duplex is heated in the width direction ( Even if you attempt to obtain the desired unidirectional heat-shrinkable tubular film by holding the TD (hereinafter abbreviated as TD) in tension and relaxing the longitudinal direction (hereinafter abbreviated as MD), the film will not heat up. As crystallization progresses at times, the heat shrinkage rate of both MD and TD decreases, and the target TD in the first invention of the present application has a high shrinkage rate of 35% or more (in hot water at 100°C for IO seconds). This is because it cannot be obtained.
従って、本顆第１、第２各発明においては、結晶性のポ
リエステルの混入は、熱収縮率が低下しない範囲に限定
されるものである。Therefore, in the first and second inventions of the present invention, the mixing of crystalline polyester is limited to a range that does not reduce the heat shrinkage rate.
更に本願第１発明において、ＴＤの熱収縮率（熱水１０
０℃１０秒間）が３５％以上で、ＭＤの熱収縮率とＴＤ
の熱収縮率の比をＭＤ／ＴＤ≦０．３と限定した理由は
、チューブ状フィルムの熱収縮率が３５％未満では瓶等
の容器にラベルシュリンクを施こした場合、該容器の凹
凸部にぴったりと密着した被覆ができず、更にＭＤとＴ
Ｄの熱収縮率の比がＭＤ／ＴＤ＞０．３の場合は、ＭＤ
の熱収縮力が強くなるため、チ、ユープはＭＤにおける
所定の被覆区域に一致しないばかりか、チューブと被覆
されるべき容器との間に部分的に空気が入り、該容器の
面に密着した被覆ができず、チューブの円周方向に均一
な肉厚で容器を被覆することが実質的にてきない問題が
あるからである。Furthermore, in the first invention of the present application, the thermal contraction rate of TD (hot water 10
0℃ for 10 seconds) is 35% or more, MD heat shrinkage rate and TD
The reason for limiting the ratio of heat shrinkage rate to MD/TD≦0.3 is that if the heat shrinkage rate of the tubular film is less than 35%, when label shrinking is applied to a container such as a bottle, the irregularities of the container MD and T
If the ratio of thermal contraction rate of D is MD/TD>0.3, MD
As the heat shrinkage force becomes stronger, not only does the tube not match the predetermined covering area in the MD, but also air partially enters between the tube and the container to be covered, causing it to stick tightly to the surface of the container. This is because there is a problem in that it is not possible to coat the container with a uniform wall thickness in the circumferential direction of the tube.
又、本願第２発明の製造方法において、同時二輪延伸を
行う場合の延伸倍率は、ＴＤ延伸倍率が２倍より小さい
と最終製品のＴＤ熱収縮率が３５％より小さくなってし
まうので、２倍以」二、好ましくは２．５倍〜４５倍と
する。なお、ＭＤの延伸倍率は特に限定されないが、安
定な延伸を行うためには、通常２．０倍〜４．０倍が好
ましい。In addition, in the manufacturing method of the second invention of the present application, when performing simultaneous two-wheel stretching, the stretching ratio is 2 times, because if the TD stretching ratio is smaller than 2 times, the TD heat shrinkage rate of the final product will be smaller than 35%. 2, preferably 2.5 to 45 times. Note that the MD stretching ratio is not particularly limited, but in order to perform stable stretching, it is usually preferably 2.0 times to 4.0 times.
又、本願第２発明において、二軸延伸デユープのＴＤを
緊張状態に保持しその状態下でＭＤに弛緩を行わせる場
合の温度条件は、特に限定されないが、＋００℃以上、
融点以下、好ましくは、１００℃〜２００℃である。Further, in the second invention of the present application, the temperature conditions for maintaining the TD of the biaxially stretched duplex in a tensioned state and allowing the MD to relax under that state are not particularly limited, but are above +00°C,
The temperature is below the melting point, preferably 100°C to 200°C.
更に本願第２発明において、二軸延伸デユープのＭＤの
弛緩率を
（ＭＤ延伸倍率−１）／（ＭＤ延伸倍率）×（１〜０．
７５）ｘ Ｉ ＯＯ（％）
と限定した理由は、ＭＤの弛緩率を
（ＭＤ延伸倍率−１）／ （Ｍ Ｄ延伸倍率）ｘＯ，７
５Ｘ１００（％）未満
にした場合、ＭＤの収縮率が大となり、ＭＤとＴＤとの
熱収縮率の比がＭＤ／ＴＤ＞０．３となり、府述した問
題が生じるからである。Furthermore, in the second invention of the present application, the MD relaxation rate of the biaxially stretched dupe is (MD stretch ratio - 1)/(MD stretch ratio) x (1 to 0.
75) The reason for limiting it to x I OO (%) is that the MD relaxation rate is (MD stretching ratio - 1) / (MD stretching ratio) x O, 7
This is because if it is less than 5×100 (%), the shrinkage rate of MD becomes large, and the ratio of the heat shrinkage rates of MD and TD becomes MD/TD>0.3, causing the above-mentioned problem.
（実施例） 次に実施例により本願各発明を具体的に説明する。(Example) Next, each invention of the present application will be specifically explained with reference to Examples.
実施例１
非晶性ポリエステル（イーストマンケミカル社製、ＰＥ
ＴＧ６７６３）を押出機により押出成形して、直ちに１
０℃の水中で急冷して外径２０φ（折径６３ｍｍ）、肉
厚１８０μの未延伸チューブ状原反を得た。Example 1 Amorphous polyester (manufactured by Eastman Chemical Company, PE
TG6763) was extruded using an extruder, and immediately 1
It was rapidly cooled in water at 0° C. to obtain an unstretched tube-shaped original fabric having an outer diameter of 20φ (folded diameter of 63 mm) and a wall thickness of 180 μm.
これを延伸温度８８℃雰囲気中でＭＤに３４倍、ＴＤに
３．５倍の延伸倍率で延伸を行ない、チューブ径７０φ
（折径２２０ｍ／ｍ）、平均厚み１５μの二軸延伸チュ
ーブを得た。This was stretched in an atmosphere with a stretching temperature of 88°C at a stretching ratio of 34 times in MD and 3.5 times in TD, and the tube diameter was 70φ.
A biaxially stretched tube with a folding diameter of 220 m/m and an average thickness of 15 μm was obtained.
この二軸延伸チューブの内部に空気を圧入して１５０℃
の雰囲気中で外径を規制しつつ、ＭＤに下記実験ＮＯ，
ｌ〜ＮＯ３５に示す率の弛緩を行ない、それぞれの実験
に対応するＮＯ，１〜Ｎ９．５のサンプルを得た。Air was pressurized into the inside of this biaxially stretched tube and the temperature was raised to 150°C.
While regulating the outer diameter in the atmosphere of
Relaxation was performed at the rates shown in 1 to NO35, and samples of NO, 1 to N9.5 corresponding to each experiment were obtained.
（３，４（ＭＤ延伸倍率）−１）／３．４（Ｍ Ｄ延伸
倍率）ＸＩＸｌ、ＯＯ（％）〜７０％・・・（実験ＮＯ
，１）（３，４−１）／３．４Ｘ ０．９０Ｘ １００
（％）≠６３％・・・（実験Ｎ０．２）
（３，４−１）／３．４Ｘ ０．７５Ｘ １００（％）
≠５３％・・・（実験Ｎ０．３）
（３，４−１）／３．４ｘ ０．５０ｘ １００（％）
＃３５％・・・（実験Ｎ０．４）
（３，４−１）／３．４ｘ Ｏ，２ＱＸ １００（％）
ミ１４％・ ・・（実験ＮＯ，５）
得られたサンプルＮＯ，１−ＮＯ，５の１００℃熱水中
１０秒間浸漬後の熱収縮率を第１表に示す。(3,4(MD draw ratio)-1)/3.4(MD draw ratio)XIXl, OO(%) ~70%...(Experiment NO
,1)(3,4-1)/3.4X 0.90X 100
(%)≠63%...(Experiment N0.2) (3,4-1)/3.4X 0.75X 100(%)
≠53%...(Experiment N0.3) (3,4-1)/3.4x 0.50x 100(%)
#35%... (Experiment N0.4) (3,4-1)/3.4x O,2QX 100(%)
Mi 14%... (Experiment No. 5) Table 1 shows the thermal shrinkage rates of the obtained samples No. 1-No. 5 after immersion in 100° C. hot water for 10 seconds.
更に該サンプルＮ Ｏ、Ｉ〜Ｎ０．５の収縮性ポリエス
テルチューブを各々ＭＤに１２５ｍｍカットし、該チュ
ーブに外径６８φ、高さ１３５ｍｍのシングルサービス
軽量紙を挿入するとともに、該チコ、−ブがこの軽量紙
の底部から１０ｍｍはみ出るようにし、ついで１８０℃
雰囲気中の熱収縮トンネル内で５秒間加熱して収縮ポリ
エステル樹脂本来を収縮させた結果を第１表に示す。Furthermore, each of the shrinkable polyester tubes of samples NO, I to NO. Make sure that 10 mm protrudes from the bottom of this lightweight paper, and then heat it to 180℃.
Table 1 shows the results of shrinking the shrinkable polyester resin itself by heating for 5 seconds in a heat shrink tunnel in an atmosphere.
第 １ 表 なお、試験の評価は以下の通りである。Table 1 The evaluation of the test is as follows.
（◇・・・瓶の不規則な表面にチューブがぴったりと合
着し、外観は非常に良好
○・・・瓶の不規則な表面にチューブかほぼ合着し外観
は良好
×・・・瓶の胴部においてはチューブと瓶との間に空気
が入り、瓶の底部においては、チューブが一部底から外
れ外観は不良である。(◇...The tube adheres perfectly to the irregular surface of the bottle, and the appearance is very good.○...The tube almost adheres to the irregular surface of the bottle, and the appearance is good.×...Bottle In the body of the bottle, air is trapped between the tube and the bottle, and at the bottom of the bottle, the tube partially comes off the bottom, giving a poor appearance.
（発明の効果）
以上、実施例の第１表に示す如く本願発明を適用して得
た一方向性熱収縮チューブ状フィルム（実験ＮＯ，１，
ＮＯ，２、及びＮＯ，３）は、瓶の不規則な表面に合着
し、外観は非常に良好である。(Effects of the Invention) As shown in Table 1 of Examples, the unidirectional heat-shrinkable tubular films obtained by applying the present invention (Experiment No. 1,
NO,2 and NO,3) adhere to the irregular surface of the bottle and have a very good appearance.
更に、他の被包装容器に被覆させた場合でも、該被包装
容器（瓶等）のサイズ及び形状、例えば、先細、中細、
テーパー状、凹凸状、あるいは複雑な曲面形状といった
種々の形にとられれることなく、それぞれの被包装容器
に対して自由にフィツトするのでその仕上り状態は抜群
であり、しかもポリエステル樹脂本来の特性であるきわ
めて優れた光沢、及び透明性、印刷効果等か相乗効果と
して発揮されるものである。Furthermore, even when covering another container to be packaged, the size and shape of the container (bottle, etc.), such as tapered, medium narrow,
It does not take on various shapes such as tapered, uneven, or complex curved shapes, and can be freely fitted into each container to be packaged, resulting in an excellent finish.Moreover, it has the inherent properties of polyester resin. Some extremely excellent gloss, transparency, printing effects, etc. are exhibited as a synergistic effect.
更に本願発明によれば、非晶性ポリエステルを主体とす
る一方向性熱収縮チューブ状フィルムであるため、従来
のラベルシュリンクフィルムの製造工程におけるフラッ
トフィルムからのトリミング及びセンターンールといっ
た煩雑な工程を必要とせずラベルシュリンク生産性にお
いても一層有利であり、その産業上の銀膜は極めて大き
いものがある。Furthermore, according to the present invention, since it is a unidirectional heat-shrinkable tubular film mainly made of amorphous polyester, the complicated steps of trimming and center-rolling from a flat film in the conventional manufacturing process of label shrink film can be eliminated. It is more advantageous in terms of label shrink productivity without the need for label shrinkage, and the industrial silver film is extremely large.
Claims (2)
ーブ状フィルムであって、 （縦方向熱収縮率）／（幅方向熱収縮率）≦０．３で且
つ、１００℃熱水中１０秒間浸漬時における前記幅方向
熱収縮率が３５％以上であることを特徴とする一方向性
熱収縮チューブ状フィルム。(1) A seamless tubular film mainly made of amorphous polyester, with (longitudinal heat shrinkage rate)/(width direction heat shrinkage rate)≦0.3, and when immersed in hot water at 100°C for 10 seconds. A unidirectional heat-shrinkable tubular film characterized in that the width direction heat shrinkage rate is 35% or more.
を配向温度範囲内の温度に加熱して同時二軸延伸を行な
った後、二軸延伸チューブ内部に気体を圧入し、加熱下
において該延伸チューブの幅方向を緊張状態で保持しつ
つ、縦方向に （縦方向延伸倍率−１）／（縦方向延伸倍率）×（１〜
０．７５）×１００％ の範囲で弛緩させることを特徴とする一方向性熱収縮チ
ューブ状フィルムの製造方法。(2) After heating a tube-shaped original fabric mainly made of amorphous polyester to a temperature within the orientation temperature range and performing simultaneous biaxial stretching, gas is pressurized into the biaxially stretched tube and the material is stretched under heating. While maintaining tension in the width direction of the stretched tube, in the longitudinal direction (longitudinal stretch ratio - 1) / (longitudinal stretch ratio) x (1 to
A method for producing a unidirectional heat-shrinkable tubular film, characterized in that the film is relaxed within a range of 0.75) x 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16957185A JPS6228226A (en) | 1985-07-30 | 1985-07-30 | Unidirectionally heat-shrinkable tubular film and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16957185A JPS6228226A (en) | 1985-07-30 | 1985-07-30 | Unidirectionally heat-shrinkable tubular film and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6228226A true JPS6228226A (en) | 1987-02-06 |
| JPH0455381B2 JPH0455381B2 (en) | 1992-09-03 |
Family
ID=15888940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16957185A Granted JPS6228226A (en) | 1985-07-30 | 1985-07-30 | Unidirectionally heat-shrinkable tubular film and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6228226A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63202429A (en) * | 1987-02-17 | 1988-08-22 | Diafoil Co Ltd | Polyester shrink film excellent in heat-sealing property |
| JPS644326A (en) * | 1987-06-25 | 1989-01-09 | Toyo Boseki | Heat-shrinkable polyester film |
| EP0477944A2 (en) * | 1990-09-27 | 1992-04-01 | Mitsubishi Plastics Inc. | Heat-shrinkable tube |
| JPH05245930A (en) * | 1991-12-26 | 1993-09-24 | Sekisui Chem Co Ltd | Polyester heat-shrinkable film |
| US5843362A (en) * | 1993-12-27 | 1998-12-01 | Fuji Seal, Inc. | Method of labeling a container with an elastic stretch label |
| US6054086A (en) * | 1995-03-24 | 2000-04-25 | Nippon Petrochemicals Co., Ltd. | Process of making high-strength yarns |
| US6063492A (en) * | 1996-07-26 | 2000-05-16 | Nippon Petrochemicals Company, Ltd | Adhesive tape and its base fabric |
| US6127293A (en) * | 1994-12-16 | 2000-10-03 | Nippon Petrochemicals Co., Ltd. | Laminated bodies and woven and nonwoven fabrics comprising α-olefin polymeric adhesion materials catalyzed with cyclopentadienyl catalyst |
| US9539797B2 (en) | 2013-11-14 | 2017-01-10 | Rayven, Inc. | Traverse wound double-sided pressure sensitive adhesive tape |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212225A (en) * | 1975-07-18 | 1977-01-29 | Kanebo Ltd | Apparatus for producing cement products highly reinforced with glass fibres |
| JPS55100118A (en) * | 1979-01-29 | 1980-07-30 | Mitsubishi Plastics Ind Ltd | Thermoshrinkable polyester tube |
| JPS5655235A (en) * | 1979-10-12 | 1981-05-15 | Mitsubishi Plastics Ind Ltd | Manufacture of polyester heat shrinkable tube |
| JPS5742726A (en) * | 1980-08-29 | 1982-03-10 | Kohjin Co Ltd | Polyester film for shrink packaging |
-
1985
- 1985-07-30 JP JP16957185A patent/JPS6228226A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212225A (en) * | 1975-07-18 | 1977-01-29 | Kanebo Ltd | Apparatus for producing cement products highly reinforced with glass fibres |
| JPS55100118A (en) * | 1979-01-29 | 1980-07-30 | Mitsubishi Plastics Ind Ltd | Thermoshrinkable polyester tube |
| JPS5655235A (en) * | 1979-10-12 | 1981-05-15 | Mitsubishi Plastics Ind Ltd | Manufacture of polyester heat shrinkable tube |
| JPS5742726A (en) * | 1980-08-29 | 1982-03-10 | Kohjin Co Ltd | Polyester film for shrink packaging |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63202429A (en) * | 1987-02-17 | 1988-08-22 | Diafoil Co Ltd | Polyester shrink film excellent in heat-sealing property |
| JPS644326A (en) * | 1987-06-25 | 1989-01-09 | Toyo Boseki | Heat-shrinkable polyester film |
| JPH0533895B2 (en) * | 1987-06-25 | 1993-05-20 | Toyo Boseki | |
| EP0477944A2 (en) * | 1990-09-27 | 1992-04-01 | Mitsubishi Plastics Inc. | Heat-shrinkable tube |
| JPH05245930A (en) * | 1991-12-26 | 1993-09-24 | Sekisui Chem Co Ltd | Polyester heat-shrinkable film |
| US5843362A (en) * | 1993-12-27 | 1998-12-01 | Fuji Seal, Inc. | Method of labeling a container with an elastic stretch label |
| US6127293A (en) * | 1994-12-16 | 2000-10-03 | Nippon Petrochemicals Co., Ltd. | Laminated bodies and woven and nonwoven fabrics comprising α-olefin polymeric adhesion materials catalyzed with cyclopentadienyl catalyst |
| US6054086A (en) * | 1995-03-24 | 2000-04-25 | Nippon Petrochemicals Co., Ltd. | Process of making high-strength yarns |
| US6063492A (en) * | 1996-07-26 | 2000-05-16 | Nippon Petrochemicals Company, Ltd | Adhesive tape and its base fabric |
| US9539797B2 (en) | 2013-11-14 | 2017-01-10 | Rayven, Inc. | Traverse wound double-sided pressure sensitive adhesive tape |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0455381B2 (en) | 1992-09-03 |
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