JPS6410332B2 - - Google Patents
Info
- Publication number
- JPS6410332B2 JPS6410332B2 JP4591481A JP4591481A JPS6410332B2 JP S6410332 B2 JPS6410332 B2 JP S6410332B2 JP 4591481 A JP4591481 A JP 4591481A JP 4591481 A JP4591481 A JP 4591481A JP S6410332 B2 JPS6410332 B2 JP S6410332B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- present
- weight
- polyester
- ethylene glycol
- 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
Links
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 21
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 12
- 229920001634 Copolyester Polymers 0.000 claims description 10
- 229920006267 polyester film Polymers 0.000 claims description 8
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 claims description 3
- 238000004581 coalescence Methods 0.000 claims 1
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 8
- 229920000728 polyester Polymers 0.000 description 7
- 238000007789 sealing Methods 0.000 description 4
- 229920006257 Heat-shrinkable film Polymers 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- BTVWZWFKMIUSGS-UHFFFAOYSA-N dimethylethyleneglycol Natural products CC(C)(O)CO BTVWZWFKMIUSGS-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- ONIHPYYWNBVMID-UHFFFAOYSA-N diethyl benzene-1,4-dicarboxylate Chemical compound CCOC(=O)C1=CC=C(C(=O)OCC)C=C1 ONIHPYYWNBVMID-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
本発明は高収縮性を有するポリエステル系フイ
ルムに関する。
従来、テレフタール酸ジメチルとエチレングリ
コールのエステル変換させた単量体を縮合重合し
た通常のポリエステル系フイルムは、耐薬品、耐
溶剤性、機械的性質、電気的性質、耐熱性、耐湿
性、耐水性、透明性、光沢、安全衛生性のすぐれ
た特長をもつているが、その反面ヒートシール性
に乏しく特にその熱収縮性フイルムにあつては、
ヒートシール、就中熱板ヒートシールがしにくい
という難点があつた。
本発明者らは、上記の欠点を改善すべく、ポリ
エステル系熱収縮性フイルムを種々検討した結
果、特定の構造を有する非晶質のコポリエステル
の性質に着目し、高収縮性、易ヒートシール性の
上に強度も十分で、風合、腰の強さ等も良好であ
り、従来のポリエステルフイルムのすぐれた特徴
を維持したポリエステル系フイルムを開発するこ
とに成功した。
即ち、本発明の特長とするところは、テレフタ
ル酸もしくはその誘導体及びエチレングリコール
と1.4シクロヘキサンジメタノールから誘導され
る非晶質のコポリエステル50〜95重量％と；テレ
フタル酸もしくはその誘導体とエチレングリコー
ルからなるポリエステル系重合体５〜50重量％；
とからなる組成物を製膜延伸処理されてなる高収
縮性ポリエステル系フイルムを提供した点にあ
る。
以下本発明について詳述する。
本発明のおけるコポリエステルは、好ましくは
テレフタル酸もしくはその誘導体及びエチレング
リコール50〜80重量％と1.4シクロヘキサンジメ
タノール20〜50重量％から誘導される透明かつ上
部な非晶質のものを例示できる。このさい特に上
記の数値は限定されるものでない。更に前記のテ
レフタル酸もしくはその誘導体とは、テレフタル
酸もしくはそれにメチル基、エチル基等を導入し
てなるジメチルテレフタレート、ジエチルテレフ
タレート等のものをいう。
コポリエステルと、テレフタル酸若しくはその
誘導体とエチレングリコールからなるポリエステ
ル系重合体（以下「通常のポリエステル」と称す
る）との配合割合は、前者が50〜95重量％、好ま
しくは70〜95重量％、後者が５〜50重量％、好ま
しくは30〜５重量％程度である。
なお、上記のように両者の数値を限定したの
は、前者のコポリエステルが95重量％超になると
概して強度の低下が大きく、風合、腰の面で劣る
のであり、一方、50重量％未満になると、コポリ
エステルの特長である高収縮性や易ヒートシール
性が得られず好ましくないからである。
本発明のフイルムは通常チユーブラー法により
製膜され、１軸、２軸、多軸に延伸されるが、Ｔ
ダイ法によるも差支えない。この際本発明では延
伸処理は必須条件であり、延伸しないと強度の低
下が大きく、更に高度の熱収縮性が得られない。
又本発明のフイルムには必要に応じ滑剤、帯電防
止剤その他の添加剤、充填剤（アンチブロツキン
グ剤）等を適宜に混入することは自由である。
本発明のフイルムは熱収縮性ラベル、熱収縮性
キヤツプシール、同カツプ容器の蓋、収縮包装、
その他適宜の包装フイルム等に好適であるが、用
途については特に制限はない。
以下に本発明の実施例を記載する。
（実施例）
テレフタル酸ジメチルとエチレングリコールの
一部分に1.4―シクロヘキサンジメタノールを用
いたコポリエステル（この際1.4―シクロヘキサ
ンジメタノールとエチレングリコールの比率は
30：70）と；テレフタル酸ジメチルとエチレング
リコールからなるポリエステル（通常のポリエス
テル）との組成物を、環状ダイスを用いて溶融押
出し、次いで２軸延伸を行い易ヒートシール性の
高熱収縮性フイルムを得た。
尚、コポリエステルと通常のポリエステルとの
配合比、延伸温度、延伸倍率については実験No.１
〜No.７の如くいろいろ変えて実験し、下記表に示
す通りのデーターを得た。
The present invention relates to a polyester film having high shrinkage properties. Conventionally, ordinary polyester films made by condensation polymerization of ester-converted monomers of dimethyl terephthalate and ethylene glycol have properties such as chemical resistance, solvent resistance, mechanical properties, electrical properties, heat resistance, moisture resistance, and water resistance. , has excellent transparency, gloss, and safety and hygiene properties, but on the other hand, it has poor heat-sealability, especially when it comes to heat-shrinkable films.
The problem was that heat sealing, especially hot plate heat sealing, was difficult. In order to improve the above-mentioned drawbacks, the present inventors investigated various types of polyester heat-shrinkable films, and as a result, they focused on the properties of amorphous copolyester with a specific structure, and found that they have high shrinkage properties and easy heat-sealing. We have succeeded in developing a polyester film that maintains the excellent characteristics of conventional polyester films, with sufficient strength, texture, and stiffness. That is, the features of the present invention are as follows: 50 to 95% by weight of an amorphous copolyester derived from terephthalic acid or a derivative thereof, ethylene glycol, and 1.4 cyclohexanedimethanol; 5 to 50% by weight of polyester polymer;
An object of the present invention is to provide a highly shrinkable polyester film obtained by forming and stretching a composition comprising: The present invention will be explained in detail below. The copolyester used in the present invention is preferably a transparent and upper amorphous copolyester derived from terephthalic acid or a derivative thereof, 50 to 80% by weight of ethylene glycol, and 20 to 50% by weight of 1.4 cyclohexanedimethanol. In this case, the above numerical values are not particularly limited. Furthermore, the above-mentioned terephthalic acid or its derivatives refer to terephthalic acid or those obtained by introducing a methyl group, ethyl group, etc. into it, such as dimethyl terephthalate and diethyl terephthalate. The blending ratio of the copolyester and the polyester polymer consisting of terephthalic acid or its derivative and ethylene glycol (hereinafter referred to as "ordinary polyester") is 50 to 95% by weight, preferably 70 to 95% by weight, The latter accounts for about 5 to 50% by weight, preferably about 30 to 5% by weight. The reason for limiting the values for both as mentioned above is that when the former copolyester exceeds 95% by weight, the strength generally decreases significantly and the feel and stiffness are inferior; This is because the high shrinkage and easy heat-sealing properties that copolyesters have are not desirable. The film of the present invention is usually produced by the tubular method and stretched uniaxially, biaxially, or multiaxially.
The die method may also be used. At this time, in the present invention, stretching treatment is an essential condition; without stretching, the strength decreases significantly and a high degree of heat shrinkability cannot be obtained.
Furthermore, lubricants, antistatic agents, other additives, fillers (antiblocking agents), etc. may be mixed into the film of the present invention as appropriate. The film of the present invention can be used for heat-shrinkable labels, heat-shrinkable cap seals, cup lids, shrink wrapping, etc.
It is suitable for other suitable packaging films, but there are no particular restrictions on the use. Examples of the present invention will be described below. (Example) Copolyester using 1.4-cyclohexanedimethanol as part of dimethyl terephthalate and ethylene glycol (in this case, the ratio of 1.4-cyclohexanedimethanol and ethylene glycol is
A composition of polyester (normal polyester) consisting of dimethyl terephthalate and ethylene glycol is melt-extruded using an annular die, and then biaxially stretched to form a highly heat-shrinkable film with easy heat-sealability. Obtained. In addition, the blending ratio of copolyester and normal polyester, stretching temperature, and stretching ratio are as in Experiment No. 1.
- No. 7, we conducted experiments with various changes, and obtained the data shown in the table below.
【表】
（評価）
上記の表によれば本発明のポリエステル系フイ
ルム（実験No.４、No.５、No.６、）は易ヒートシー
ル性である上に高収縮性であり、熱収縮性フイル
ムとしては用途は極めて多い。これに対し本発明
範囲外のもの、実験７のものは、易ヒートシール
性、高収縮性は前記実験No.４、No.５、No.６よりも
優れるが、強度の低下が大きく、風合、腰の面で
前三者に劣るのであり、従つて用途に制約があ
る。
一方、実験No.１、No.２、No.３は熱収縮性及び、
ヒートシール性に劣り、前記に例示した本発明の
フイルムの用途に使用し得ないものである。
以上のように、本発明は高収縮性、易ヒートシ
ール性の上に強度も十分で、風合、腰の強さ等の
良好なポリエステル系フイルムを提供できたので
あり、このため例えば、包装フイルム、ラベル、
キヤツプシール、容器の蓋等に使用して好適であ
る。[Table] (Evaluation) According to the above table, the polyester films of the present invention (Experiment No. 4, No. 5, No. 6) are easily heat-sealable and have high shrinkability. It has many uses as a sex film. On the other hand, those outside the scope of the present invention, those in Experiment 7, were superior in easy heat sealability and high shrinkage to those in Experiments No. 4, No. 5, and No. 6, but had a large decrease in strength and However, it is inferior to the previous three in terms of waist strength, and its uses are therefore limited. On the other hand, experiments No. 1, No. 2, and No. 3 showed heat shrinkage and
It has poor heat sealability and cannot be used for the film of the present invention exemplified above. As described above, the present invention has been able to provide a polyester film that has high shrinkability, easy heat-sealability, and sufficient strength, and has good texture and stiffness. films, labels,
Suitable for use in cap seals, container lids, etc.
Claims (1)
ングリコールと1.4シクロヘキサンジメタノール
から誘導される非晶質のコポリエステル50〜95重
量％と； テレフタル酸もしくはその誘導体とエチレング
リコールからなるポリエステル系重合体５〜50重
量％； とからなる組成物を製膜延伸処理されてなるこ
とを特徴とする高収縮性ポリエステル系フイル
ム。[Claims] 1. 50 to 95% by weight of an amorphous copolyester derived from terephthalic acid or its derivative, ethylene glycol and 1.4 cyclohexanedimethanol; A highly shrinkable polyester film characterized by being formed and stretched from a composition comprising: 5 to 50% by weight of coalescence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4591481A JPS57159618A (en) | 1981-03-27 | 1981-03-27 | Highly shrinkable polyester film excellent in heat seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4591481A JPS57159618A (en) | 1981-03-27 | 1981-03-27 | Highly shrinkable polyester film excellent in heat seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57159618A JPS57159618A (en) | 1982-10-01 |
| JPS6410332B2 true JPS6410332B2 (en) | 1989-02-21 |
Family
ID=12732509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4591481A Granted JPS57159618A (en) | 1981-03-27 | 1981-03-27 | Highly shrinkable polyester film excellent in heat seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57159618A (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6164430A (en) * | 1984-09-07 | 1986-04-02 | Okura Ind Co Ltd | Heat-shrinkable polyester film |
| JPS6291555A (en) * | 1985-10-18 | 1987-04-27 | Toyobo Co Ltd | Heat-shrinkable polyester film |
| JP2563773B2 (en) * | 1985-10-22 | 1996-12-18 | グンゼ株式会社 | Polyester shrink-link label with excellent low-temperature heat shrinkability |
| JPH0753416B2 (en) * | 1986-06-05 | 1995-06-07 | グンゼ株式会社 | Heat shrinkable label |
| JPH0722965B2 (en) * | 1986-07-18 | 1995-03-15 | ダイアホイルヘキスト株式会社 | Polyester shrink wrapping film |
| US4983653A (en) * | 1986-11-12 | 1991-01-08 | Diafoil Company, Ltd. | Polyester shrinkable film containing benzotriazole |
| US4985538A (en) * | 1986-11-12 | 1991-01-15 | Diafoil Company, Limited | Shrinkable polyester film |
| GB9026109D0 (en) * | 1990-11-30 | 1991-01-16 | Hulse Richard F | Improvements relating to labelling |
| CH690438A5 (en) * | 1996-05-03 | 2000-09-15 | Forbo Giubiasco Sa | The sheet covering material made of plastic. |
| JP4657411B2 (en) * | 1999-11-25 | 2011-03-23 | オカモト株式会社 | Soft polyester resin composition for calendering and film produced therefrom |
| JP3767511B2 (en) | 2001-04-26 | 2006-04-19 | 東洋紡績株式会社 | Heat-shrinkable polyester film roll |
| US6765070B2 (en) | 2001-05-18 | 2004-07-20 | Mitsubishi Chemical Corporation | Copolymerized polyester resin composition and stretched film |
| JP3678186B2 (en) * | 2001-08-01 | 2005-08-03 | 東洋紡績株式会社 | Heat-shrinkable polyester film roll |
| KR100536336B1 (en) * | 2003-06-11 | 2005-12-12 | 에스케이케미칼주식회사 | Copolyester resin molding article with improved flowability and preparing method for the same |
| KR100513121B1 (en) * | 2003-06-11 | 2005-09-07 | 에스케이케미칼주식회사 | Method for changing color of copolyester resin using lubricant of metal stearate |
| WO2009013284A1 (en) * | 2007-07-25 | 2009-01-29 | Cryovac, Inc. | Heat-shrinkable polyester film |
| US20090227735A1 (en) * | 2008-03-07 | 2009-09-10 | Eastman Chemical Company | Miscible polyester blends and shrinkable films prepared therefrom |
| EP2527142A1 (en) | 2011-05-24 | 2012-11-28 | Cryovac, Inc. | Multilayer polyester film for ready meals |
| US10329393B2 (en) | 2012-12-12 | 2019-06-25 | Eastman Chemical Company | Copolysters plasticized with polymeric plasticizer for shrink film applications |
| WO2017159582A1 (en) * | 2016-03-18 | 2017-09-21 | 東洋紡株式会社 | Polyester film, laminate, and packaging body |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1005944A (en) * | 1972-07-31 | 1977-02-22 | Eastman Kodak Company | Blends of polyester and poly(ether-ester) elastomers |
| JPS5731975B2 (en) * | 1973-03-28 | 1982-07-08 | ||
| JPS5140905A (en) * | 1974-10-03 | 1976-04-06 | Nakamichi Kenkyusho | KYAPUSUTANSOCHI |
| JPS55100118A (en) * | 1979-01-29 | 1980-07-30 | Mitsubishi Plastics Ind Ltd | Thermoshrinkable polyester tube |
| JPS5742726A (en) * | 1980-08-29 | 1982-03-10 | Kohjin Co Ltd | Polyester film for shrink packaging |
-
1981
- 1981-03-27 JP JP4591481A patent/JPS57159618A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57159618A (en) | 1982-10-01 |
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