JPS6381042A - Heat seal material for liquid vessel - Google Patents
Heat seal material for liquid vesselInfo
- Publication number
- JPS6381042A JPS6381042A JP22705786A JP22705786A JPS6381042A JP S6381042 A JPS6381042 A JP S6381042A JP 22705786 A JP22705786 A JP 22705786A JP 22705786 A JP22705786 A JP 22705786A JP S6381042 A JPS6381042 A JP S6381042A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- polyester resin
- laminated
- layer
- resin
- 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
- 239000007788 liquid Substances 0.000 title claims description 7
- 239000000463 material Substances 0.000 title description 3
- 229920001225 polyester resin Polymers 0.000 claims description 40
- 239000004645 polyester resin Substances 0.000 claims description 40
- 239000012775 heat-sealing material Substances 0.000 claims description 13
- 230000009477 glass transition Effects 0.000 claims description 8
- 229920006127 amorphous resin Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 description 23
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 238000007789 sealing Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 239000011888 foil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229920006267 polyester film Polymers 0.000 description 7
- 238000009820 dry lamination Methods 0.000 description 6
- 239000012793 heat-sealing layer Substances 0.000 description 5
- 229920001684 low density polyethylene Polymers 0.000 description 5
- 239000004702 low-density polyethylene Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920005672 polyolefin resin Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000000796 flavoring agent Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- WCVOGSZTONGSQY-UHFFFAOYSA-N 2,4,6-trichloroanisole Chemical compound COC1=C(Cl)C=C(Cl)C=C1Cl WCVOGSZTONGSQY-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 235000013355 food flavoring agent Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Packages (AREA)
- Laminated Bodies (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
に産業上の利用分野】
本弁明は、液体容器として用いられる包装体に使用する
ための熱封着材料に関するものであり、内容物の変味、
異臭の生じない包Ｈ月を提供するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This defense relates to a heat sealing material for use in packaging bodies used as liquid containers.
To provide a package that does not produce an unpleasant odor.
Ｋ従来の技術】
従来、液体容器として用いられる包装体は、ポリエヂレ
ン、ポリプロピレンなどのポリオレフィン樹脂を包装体
の内容物と接触する面の熱封着材料として一般的に使用
していた。しかし、これらポリオレフィン樹脂には次の
ような欠点があった。BACKGROUND OF THE INVENTION Conventionally, packaging bodies used as liquid containers have generally used polyolefin resins such as polyethylene and polypropylene as a heat sealing material for the surface of the packaging body that comes into contact with the contents of the packaging body. However, these polyolefin resins had the following drawbacks.
イ）ポリオレフィン樹脂は、フィルムに加工する過程で
熱分解を起すと、脂肪族炭化水素などの揮発性成分が発
生し、この揮発性成分が内容物に移行して、内容物の変
味、異臭が生じる原因となる。b) When polyolefin resin undergoes thermal decomposition during the process of processing into a film, volatile components such as aliphatic hydrocarbons are generated, and these volatile components are transferred to the contents, causing a change in taste and unpleasant odor to the contents. This causes the occurrence of
口）ポリオ−レフイン樹脂は、内容物中の肴香成分を吸
着、或いは透過し易く、この為、内容物の風味が変り易
い。(Example) Polyolefin resin easily adsorbs or permeates flavor components in the contents, and therefore tends to change the flavor of the contents.
上記のような欠点を改善するために揮発性物質の発生が
少なく、しかも保香性の良好なポリ１ヂレンデレフタレ
ート樹脂を、食品と接触するヒ−トシール層として用い
る事が提案されている。しかしながら、ポリエチレンテ
レフタレー］・樹脂単独では、熱封着強度および衝撃強
度が弱く実用化が困難であった。In order to improve the above-mentioned drawbacks, it has been proposed to use poly-1-dilene derephthalate resin, which generates less volatile substances and has good aroma retention, as a heat seal layer that comes into contact with food. . However, using polyethylene terephthalate resin alone has poor heat sealing strength and impact strength, making it difficult to put it into practical use.
また、特開昭６０−４８３４４号公報には、ヒートシー
ル層としてポリオレフィン系樹脂を積層したポリエステ
ルフィルムを用いる事により耐衝撃性が向上する旨記載
されているが、ポリオレフィン系樹脂とポリエステルフ
ィルム間の接着強度が不十分な為、充分な改良効果が得
られなかった。Furthermore, JP-A No. 60-48344 states that impact resistance is improved by using a polyester film laminated with a polyolefin resin as a heat-sealing layer. Due to insufficient adhesive strength, sufficient improvement effects could not be obtained.
Ｋ発明が解決しようとする問題点】
本発明は、上記した従来のヒートシール層の有する欠員
を改良し、内容物の変味、異臭が生じず、しかも熱封着
性能の良好な包装材を提供することを目的とする。K Problems to be Solved by the Invention] The present invention improves the vacancies in the conventional heat-sealing layer described above, and provides a packaging material that does not cause any strange taste or odor to the contents and has good heat-sealing performance. The purpose is to provide.
Ｋ問題点を解決するだめの手段】
本発明者は、上記の問題点を解決すべく研究の結果、液
体容器用のヒートシール材料として、内容物と接触する
面にガラス転移温度（Ｔｇ）が４０℃以上のポリエステ
ル樹脂を使用し、このものを引張弾性率が１０． ｏｏ
ｏＫｙ ／ ｃｉ以下のポリエステル樹脂と積層するこ
とにより本発明をなしたものである。[Means for Solving Problem K] As a result of research to solve the above problem, the present inventor has developed a heat-sealing material for liquid containers that has a glass transition temperature (Tg) on the surface that contacts the contents. A polyester resin with a temperature of 40°C or higher is used, and its tensile modulus is 10. oo
The present invention is achieved by laminating with a polyester resin having oKy/ci or less.
ポリエステル樹脂がすぐれた保香性を示すのは、包装体
に充填される内容物の温度が、ポリエステル樹脂のガラ
ス転移温度（Ｔｇ）以下の場合である。この為、内容物
と接触する面には少なくともＴｇが４０℃以上のポリエ
ステル樹脂を使用する必要がある。しかしながらこのよ
うなポリエステル樹脂は、引張弾性率が高い為、熱封着
部に衝撃が加わった場合破壊しやすい。ところが、これ
に引張弾性率が１０．０００／（ｆ ／ ｃ＃１以下の
ポリエステル樹脂をＶＪ、層し一体化する事により、ヒ
ートシール層の引張弾性率が低下し良好な熱封着性能を
得る事ができる。異なる引張弾性率をもつ樹脂を一体化
するには、同種樹脂である必要があり、本ブＬ明におい
てはポリエステル樹脂が使用される。８！ｉ層方法は、
共押出法が望ましいが、層間接着強度が十分強く剥離不
可能であれば、伯の方法も用いる事ができる。又、ポリ
エステル樹脂は、可能な限り、低結晶性のものがよく、
結晶化度が高いと透明性やシール部の劣化が大きくなっ
てしまう。Polyester resin exhibits excellent fragrance retention when the temperature of the contents filled in the package is equal to or lower than the glass transition temperature (Tg) of the polyester resin. For this reason, it is necessary to use polyester resin with a Tg of at least 40° C. or higher on the surface that comes into contact with the contents. However, since such a polyester resin has a high tensile modulus, it is easily broken when an impact is applied to the heat-sealed portion. However, by layering and integrating a polyester resin with a tensile modulus of 10.000/(f/c#1 or less), the tensile modulus of the heat seal layer decreases, making it difficult to achieve good heat sealing performance. In order to integrate resins with different tensile moduli, they must be of the same type, and in this book polyester resin is used.8! The i-layer method is as follows:
A coextrusion method is preferable, but the method described above can also be used if the interlayer adhesive strength is sufficiently strong and peeling is impossible. In addition, the polyester resin should preferably have low crystallinity as much as possible.
If the degree of crystallinity is high, the transparency and sealing portion will deteriorate significantly.
Ｔｇが４０℃以上のポリエステル樹脂層は、引張弾性率
が高い為、５０μ以下であることが必要であり、これ以
上の厚みでは、積層する引張弾性率の低い樹脂層をかな
り厚くする必要があり、実際的でない。また、積層する
ポリエステル樹脂層の弾性率は１０．００ＯＮｇ／ ｃ
ｔｌ以下である事が必要である。A polyester resin layer with a Tg of 40°C or higher has a high tensile modulus, so it must be 50 μ or less. If the thickness is greater than this, the laminated resin layer with a low tensile modulus must be considerably thicker. , impractical. In addition, the elastic modulus of the laminated polyester resin layer is 10.00ONg/c
It is necessary that it be less than tl.
一般に実用的な熱封着材料の引張弾性率は、１４ 、
ＯＯＯＮｇ／ ｃｄ以下と考えられるが、前記二層より
なる樹脂における弾性率の低い樹脂層が少なくとも１０
．００ＯＮｇ／ ｃｉ以下の弾性率でないと、ヒートシ
ール材料の厚みがかなり増えてしまい実用的でない。尚
、ヒートシール材料の総厚みは４０〜１００μが好適で
ある。この為、引張弾性率１０ 、０００Ｋｇ／ ｃｉ
のポリエステル樹脂の厚みは１００μ以下が望ましい。Generally, the tensile modulus of practical heat sealing materials is 14,
It is thought that the elastic modulus is less than OOONg/cd, but the resin layer with low elastic modulus in the two-layer resin has at least 10
．． If the elastic modulus is less than 00ONg/ci, the thickness of the heat sealing material will increase considerably, making it impractical. In addition, the total thickness of the heat-sealing material is preferably 40 to 100 microns. For this reason, the tensile modulus is 10,000Kg/ci
The thickness of the polyester resin is preferably 100μ or less.
Ｋ作 用）
本発明においては内容物と接触する面にガラス転移温度
が４０℃以上のポリエステル樹脂を用いているので保香
性が良好であり、しかもこのポリエステル樹脂に引張弾
性率が１０．０００Ｋｇ／ ｃｉｒ以下のポリエステル
樹脂を積層して一体化したのでヒー１へシール層の引張
弾性率が低下し、衝撃に強い良好な熱封着性能を有する
ヒートシール材料とすることができたものである。K effect) In the present invention, since a polyester resin with a glass transition temperature of 40°C or higher is used on the surface that comes into contact with the contents, it has good fragrance retention, and moreover, this polyester resin has a tensile modulus of 10.000 kg Since polyester resins of less than /cir are laminated and integrated, the tensile modulus of the sealing layer decreases to H1, making it possible to create a heat-sealing material that is resistant to impact and has good heat-sealing performance. .
Ｋ実 施 例】
次に本発明のヒートシール月利を有する包装体の実施態
様を図面によって説明する。本発明のヒートシール材料
よりなるヒートシール層２は、耐熱層１と貼合すること
により、熱封着性能が良好でしかも変味、異臭の生じな
い包装体を形成できる。ここで図中１の耐熱層は２００
℃程度のヒーＩ・シール温度に絶える材料である。例え
ば紙、アルミニウム、二軸延伸ポリエステルフィルム、
二軸延伸ナイロンフィルム、二軸延伸ポリプロピレンフ
ィルムまたは、これらの複合体が適当であり、用途に応
じてはポリ塩化ビニリデンなどのガスバリアー層やポリ
エチレンフィルムなどの補強層を組みあわ甘る事も可能
である。この耐熱層をヒー１〜シ一ル層２と貼合する。K Embodiment Next, embodiments of the heat-sealable package of the present invention will be described with reference to the drawings. By laminating the heat-sealing layer 2 made of the heat-sealing material of the present invention with the heat-resistant layer 1, it is possible to form a package that has good heat-sealing performance and does not produce any strange taste or odor. Here, the heat-resistant layer 1 in the figure is 200
It is a material that resists heat sealing temperatures of approximately ℃. For example, paper, aluminum, biaxially oriented polyester film,
Biaxially oriented nylon film, biaxially oriented polypropylene film, or a composite thereof is suitable, and depending on the application, it is also possible to combine a gas barrier layer such as polyvinylidene chloride or a reinforcing layer such as polyethylene film. be. This heat-resistant layer is laminated with Heater 1 to Seal Layer 2.
貼合は、通常のドライラミネーション或いはピー１−シ
ール材料を二層の共押出機で耐熱層上に押出コートする
などの方法を用いて行なわれる。Lamination is carried out using methods such as conventional dry lamination or extrusion coating of the P1-seal material onto the heat-resistant layer in a two-layer coextruder.
ヒートシール層は、Ｔｙ４０’Ｃ以上のポリエステル樹
脂すと引張弾性率が１０． ＯＯＪｇ／ ｃｍ以下のポ
リエステル樹脂ａとの少なくとも二層の構成からなり、
包装体を形成する際は、包装体に充填される内容物と接
触し互いに熱融着する而がＴ ｇ４０℃以トのポリ１ス
テル樹脂すとなるようにする。The heat seal layer is made of polyester resin of Ty40'C or higher and has a tensile modulus of 10. Consisting of at least two layers with polyester resin a of OOJg/cm or less,
When forming the package, the polyester resin with a T g of 40° C. or less should be used to contact and heat-seal the contents to be filled in the package.
以下に実施例と比較例を示し、本発明の効果を具体的に
示す。Examples and comparative examples are shown below to concretely demonstrate the effects of the present invention.
実施例１
９μのアルミ箔の一面に１２μの二軸延伸ポリニスフー
ルフィルムを、反対面に７０μのポリエステル樹脂Δと
１５μのポリエステル樹脂Ｂとを積層した。Example 1 A 12μ biaxially stretched polyvarnish film was laminated on one side of a 9μ aluminum foil, and a 70μ polyester resin Δ and a 15μ polyester resin B were laminated on the opposite side.
該積層は通常の共押出法にて行った。The lamination was carried out by a conventional coextrusion method.
ポリニスデル樹脂△は、引張弾性率２００ＯＮｇ／ ｃ
＃ｉの線状飽和ポリエステル樹脂〈東洋紡績＠製、商品
名バイロンＧ）Ｉ−９００）を用いた。（Ｔｇ−−２０
℃）ポリエステル樹脂Ｂは、Ｔｇが８１℃の線状飽和ポ
リ１ステル樹脂（イーストマンコダック社製、商品名Ｐ
ＥＴ−０６７６３）を用いた。Polynisder resin △ has a tensile modulus of 200ONg/c
Linear saturated polyester resin #i (manufactured by Toyobo@, trade name: Vylon G) I-900) was used. (Tg--20
°C) Polyester resin B is a linear saturated polyester resin with a Tg of 81 °C (manufactured by Eastman Kodak Company, trade name P).
ET-06763) was used.
実施例２
９μのアルミ箔の一面に１２μの二軸延伸ポリコースプ
ルフィルムを、反対面に６０μの低密度ポリ１ヂレンを
ドライラミネート法により積層し、さらに低密度ポリＴ
チレン層上に共押出法で得た３０μのポリエステへ樹脂
八と１５μのポリエステル樹脂Ｂの積層フィルｌ＼をド
ライラミネー１− ｎ、により積層した。尚、ポリエス
テル樹脂Ａ、［３はそれぞれ実施例１に記載のものを使
用した。Example 2 A 12μ biaxially oriented polycos pull film was laminated on one side of a 9μ aluminum foil, a 60μ low density polyethylene film was laminated on the opposite side, and further a low density polyester
On the tyrene layer, a laminated film 1 of resin 8 and 15 µm polyester resin B was laminated onto a 30 µm polyester obtained by coextrusion by dry lamination 1-n. Note that polyester resins A and [3 were as described in Example 1, respectively.
比較例１
９μのアルミ箔の一面に１２μの二軸延伸ポリエステル
フイルムを、反対面に１００μの１１ζり王ステル樹脂
Ｂ（実施例１に記載と同様のもの）をドライラミネート
法で積層した。Comparative Example 1 A 12μ biaxially stretched polyester film was laminated on one side of a 9μ aluminum foil, and a 100μ 11ζ resin B (same as described in Example 1) was laminated on the opposite side by dry lamination.
比較例２
９μのアルミ箔の一面に１２μの二軸延伸ポリエステル
フィルムを積層し、反対面に １００μの低密度ポリエ
チレンをドライラミネート法で積層した。Comparative Example 2 A 12μ biaxially stretched polyester film was laminated on one side of a 9μ aluminum foil, and a 100μ low density polyethylene film was laminated on the opposite side by dry lamination.
比較例３
９μのアルミ箔の一面に１２μの二軸延伸ポリエステル
フィルムを積層し、反対面に８０μの低密度ポリエチレ
ンをドライラミネート法で積層し、さらにこの上に１５
μのポリエステル樹脂Ｂ（実施例１に記載と同様のもの
）をドライラミネート法で積 層 し ｌこ 。Comparative Example 3 A 12μ biaxially stretched polyester film was laminated on one side of a 9μ aluminum foil, an 80μ low density polyethylene film was laminated on the other side by dry lamination, and a
Polyester resin B (same as described in Example 1) of μ was laminated by dry lamination.
比較例４
９μのアルミ箔の一面に１２μの二軸延伸ポリエステル
フイルムを積層し、反対面に引張弾性率２４ 、０００
Ｋｇ／ ｃｉの６０μのポリエチレンテレフタレートと
１５μのポリニスｊ）Ｌ／樹樹脂金共押出法で積層した
。Comparative Example 4 A 12μ biaxially stretched polyester film was laminated on one side of a 9μ aluminum foil, and the other side had a tensile modulus of 24,000.
Kg/ci of 60μ polyethylene terephthalate and 15μ polyvarnish j) Laminated by L/resin gold coextrusion method.
比較例５
９μのアルミ箔の一面に１２μの二軸延伸ポリエステル
フイルムを積層し、反対面に１００μのポリ１スｊル樹
脂Ｂ庖槓囮した。Comparative Example 5 A 12μ biaxially stretched polyester film was laminated on one side of a 9μ aluminum foil, and a 100μ polyester resin B was coated on the other side.
上記実施例１．２及び比較例１〜５において得られた積
層フィルムににっで包装体を形成して−〇 −
２００℃１秒、３ＫＦＩ／ｃ屑の条件てヒートシールし
、これを３００ｍｍ／ｌ１ｌｉｎの速度で引きはがす張
力をテンシロンにて測定して各ヒートシール層の強度を
求めた。また、１００％のオレンジジコースを２０ｃｍ
×１０ｃｍの該積層フィルムによって製造した包装体に
封入し、味、臭いの変化をみた。保存条件は２５℃で１
０口間で、変化なしを○、変化が大である場合を×とし
て結果をヒー１へシール層の強度と共に表に示した。A package was formed on the laminated film obtained in Example 1.2 and Comparative Examples 1 to 5 above, and heat-sealed at -200°C for 1 second and 3KFI/c waste, and this was wrapped into a 300mm piece. The strength of each heat-sealing layer was determined by measuring the peeling force using a tensilon at a speed of /l1lin. In addition, 20cm of 100% orange gicose
It was enclosed in a package made of the laminated film measuring 10 cm x 10 cm, and changes in taste and odor were observed. Storage conditions are 1 at 25°C.
The results are shown in the table together with the strength of the sealing layer and the strength of the sealing layer.
以下余白
上記の表に示した結果かられかるように、Ｔｇが８１℃
と室温以上であるポリエステル樹脂Ｂは、内容物に対し
てほとんど味、臭いをかえない。これは着香料などの透
過、吸着が小さい為である。Margin below As can be seen from the results shown in the table above, Tg is 81℃
Polyester resin B, which is at room temperature or higher, hardly changes the taste or odor of the contents. This is because permeation and adsorption of flavoring agents and the like are small.
しかし、このような樹脂は常温で硬い為、ヒートシール
強度が小さく実用に耐えない。（比較例５）また、常温
で柔かいポリエステル樹脂Ａや低密度ポリエチレンは、
ヒートシール強度は良好だが味覚をかえてしまう。（比
較例１，２）
Ｋ発明の効果】
実施例１及び実施例２に記載の本発明によるヒートシー
ル材料は、ヒートシール強度が強く内容物の変味が少な
い為、良好な包装体を形成することができる。However, such resins are hard at room temperature and have low heat-sealing strength, making them impractical. (Comparative Example 5) Polyester resin A and low density polyethylene, which are soft at room temperature,
The heat seal strength is good, but it changes the taste. (Comparative Examples 1 and 2) Effects of the Invention: The heat-sealing materials according to the invention described in Examples 1 and 2 have strong heat-sealing strength and little discoloration of the contents, so they form a good package. can do.
これは、二種類のポリエステル樹脂からなる二層構成が
有効な為である。本発明にＪ３いてはガラス転移温度の
高い樹脂と柔かいポリエステル樹脂との構成が重要であ
る。低密度ポリエチレンとポリエステル樹脂の組みあわ
せ（比較例３）やかたいポリエステル樹脂との組みあわ
せ（比較例４）では実用的な包装体は得られない。This is because a two-layer structure consisting of two types of polyester resins is effective. In the present invention, it is important for J3 to have a composition of a resin with a high glass transition temperature and a soft polyester resin. A combination of low-density polyethylene and polyester resin (Comparative Example 3) or a combination of hard polyester resin (Comparative Example 4) does not yield a practical package.
図面は、本発明によるヒートシール材料を有する包装体
の一部拡大断面図である。
１・・・耐熱層、 ２・・・ヒートシール層。
ａ・・・引張強度が１０ 、００ＯＮｇ／ ｃｉ以下の
ポリエステル樹脂
ｂ・・・ガラス転移温度が４０℃以上のポリエステル樹
脂The drawing is a partially enlarged sectional view of a package having a heat-sealing material according to the present invention. 1...Heat-resistant layer, 2...Heat-sealing layer. a... Polyester resin with a tensile strength of 10,00 ONg/ci or less b... Polyester resin with a glass transition temperature of 40°C or higher
Claims (1)
ポリエステル系樹脂であり、このポリエステル系樹脂に
引張弾性率１０，０００Ｋｇ／ｃｍ＾２以下のポリエス
テル系樹脂が積層されていることを特徴とする液体容器
用ヒートシール材料。 ２、該ガラス転移温度４０℃以上のポリエステル系樹脂
の厚みが５０μ以下であることを特徴とする特許請求の
範囲第１項に記載の液体容器用ヒートシール材料。 ３、該ガラス転移温度４０℃以上のポリエステル系樹脂
が非結晶性樹脂であることを特徴とする特許請求の範囲
第１項に記載の液体容器用ヒートシール材料。[Claims] 1. The surface in contact with the contents is a polyester resin with a glass transition temperature of 40°C or higher, and a polyester resin with a tensile modulus of elasticity of 10,000 Kg/cm^2 or lower is laminated on this polyester resin. A heat-sealing material for liquid containers characterized by: 2. The heat-sealing material for a liquid container according to claim 1, wherein the polyester resin having a glass transition temperature of 40° C. or higher has a thickness of 50 μm or less. 3. The heat-sealing material for a liquid container according to claim 1, wherein the polyester resin having a glass transition temperature of 40° C. or higher is an amorphous resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61227057A JPH0686110B2 (en) | 1986-09-25 | 1986-09-25 | Heat seal material for liquid containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61227057A JPH0686110B2 (en) | 1986-09-25 | 1986-09-25 | Heat seal material for liquid containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6381042A true JPS6381042A (en) | 1988-04-11 |
| JPH0686110B2 JPH0686110B2 (en) | 1994-11-02 |
Family
ID=16854852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61227057A Expired - Fee Related JPH0686110B2 (en) | 1986-09-25 | 1986-09-25 | Heat seal material for liquid containers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0686110B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE35939E (en) * | 1991-04-01 | 1998-10-27 | Toyo Boseki Kabushiki Kaisha | Polyester resin, compositions thereof and sealant made therefrom |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4932983A (en) * | 1972-07-27 | 1974-03-26 | ||
| JPS5624165A (en) * | 1979-07-30 | 1981-03-07 | Tetra Pak Dev | Heattsealing laminated material |
| JPS5959435A (en) * | 1982-09-30 | 1984-04-05 | 藤森工業株式会社 | composite packaging materials |
| JPS6036225U (en) * | 1983-08-22 | 1985-03-13 | 大日本印刷株式会社 | container for liquids |
| JPS6048344A (en) * | 1983-08-26 | 1985-03-16 | 藤森工業株式会社 | composite packaging materials |
| JPS6052337A (en) * | 1983-08-31 | 1985-03-25 | 東洋紡績株式会社 | Laminated polyester film for food vessel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6036225B2 (en) * | 1980-12-02 | 1985-08-19 | 保土谷化学工業株式会社 | Basic dye liquid composition |
-
1986
- 1986-09-25 JP JP61227057A patent/JPH0686110B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4932983A (en) * | 1972-07-27 | 1974-03-26 | ||
| JPS5624165A (en) * | 1979-07-30 | 1981-03-07 | Tetra Pak Dev | Heattsealing laminated material |
| JPS5959435A (en) * | 1982-09-30 | 1984-04-05 | 藤森工業株式会社 | composite packaging materials |
| JPS6036225U (en) * | 1983-08-22 | 1985-03-13 | 大日本印刷株式会社 | container for liquids |
| JPS6048344A (en) * | 1983-08-26 | 1985-03-16 | 藤森工業株式会社 | composite packaging materials |
| JPS6052337A (en) * | 1983-08-31 | 1985-03-25 | 東洋紡績株式会社 | Laminated polyester film for food vessel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE35939E (en) * | 1991-04-01 | 1998-10-27 | Toyo Boseki Kabushiki Kaisha | Polyester resin, compositions thereof and sealant made therefrom |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0686110B2 (en) | 1994-11-02 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |