JPH0396346A - Heat resistant heat sealable packaging material - Google Patents
Heat resistant heat sealable packaging materialInfo
- Publication number
- JPH0396346A JPH0396346A JP23496389A JP23496389A JPH0396346A JP H0396346 A JPH0396346 A JP H0396346A JP 23496389 A JP23496389 A JP 23496389A JP 23496389 A JP23496389 A JP 23496389A JP H0396346 A JPH0396346 A JP H0396346A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- polyester resin
- component
- packaging material
- 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.)
- Granted
Links
- 239000005022 packaging material Substances 0.000 title claims description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 27
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 12
- 229920001225 polyester resin Polymers 0.000 claims abstract description 10
- 239000004645 polyester resin Substances 0.000 claims abstract description 10
- 150000002009 diols Chemical class 0.000 claims abstract description 9
- 150000007513 acids Chemical class 0.000 claims abstract description 6
- 229920000728 polyester Polymers 0.000 claims abstract description 4
- 230000001954 sterilising effect Effects 0.000 abstract description 17
- -1 polyethylene terephthalate Polymers 0.000 abstract description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 8
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 6
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 abstract description 4
- 239000004743 Polypropylene Substances 0.000 abstract description 3
- 229920001328 Polyvinylidene chloride Polymers 0.000 abstract description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 abstract description 3
- 229920001155 polypropylene Polymers 0.000 abstract description 3
- 239000005033 polyvinylidene chloride Substances 0.000 abstract description 3
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 9
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 8
- 238000001179 sorption measurement Methods 0.000 description 5
- 229940087305 limonene Drugs 0.000 description 4
- 235000001510 limonene Nutrition 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 239000005021 flexible packaging material Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000013355 food flavoring agent Nutrition 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明はレトルト殺菌に耐える耐熱性を有し、かつレト
ルト殺菌後のヒートシール強度の良好なポリエステル樹
脂系包装材料に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a polyester resin packaging material that has heat resistance to withstand retort sterilization and has good heat seal strength after retort sterilization.
［従来の技術］
従来、軟包装材料、容器材料、蓋材等の包装材料として
は一般にポリエチレン、ボリブロビレン等のポリオレフ
ィンが一般に用いられ、これら相互をヒートシールする
方式によって封止されていた。[Prior Art] Conventionally, polyolefins such as polyethylene and polypropylene have been generally used as packaging materials such as flexible packaging materials, container materials, and lid materials, and these have been sealed by heat-sealing them together.
しかし、ポリオレフィンからなる包装材料はフィルム等
に成形加工過程で酸化防止剤、その他添加剤が溶出し、
これらが包装された内容物に移行し、さらにポリオレフ
ィン臭の移行による内容物の変味、異臭の発生の問題、
内容物中の着香成分その他有効成分の包装材への吸着の
問題がある。However, in packaging materials made of polyolefin, antioxidants and other additives are eluted during the molding process into films, etc.
These transfer to the packaged contents, and further transfer of polyolefin odor causes problems such as change in taste of the contents and occurrence of off-odor.
There is a problem of adsorption of flavoring ingredients and other active ingredients in the contents to the packaging material.
このような問題を改善するためポリエチレンテレフタレ
ート（ＰＥＴ）を包装材料の内層として用いることが提
案されている。しかし、ＰＥＴはヒートシール性に問題
があり、そのための解決が要望されていた。In order to improve these problems, it has been proposed to use polyethylene terephthalate (PET) as an inner layer of packaging materials. However, PET has a problem with heat sealability, and a solution to this problem has been desired.
［発明が解決しようとする課，Ｉ］
本発明は上記事情に鑑みてなされたものであって、内容
物の変味、異臭の発生のおそれがなく、内容物の着香成
分等の包装材への吸着を改善し得るとともに、ヒートシ
ール性にもすぐれ、かつ、レトルト殺菌後のヒートシー
ル強度の低下が小さい包装材料を提供することを目的と
する。[Problem to be solved by the invention, I] The present invention has been made in view of the above-mentioned circumstances, and provides a packaging material for flavoring components, etc. of the contents, without the risk of causing the contents to have a strange taste or abnormal odor. It is an object of the present invention to provide a packaging material that can improve adsorption to the skin, has excellent heat-sealing properties, and has a small decrease in heat-sealing strength after retort sterilization.
［課題を解決するための手段］
本発明は上記課題を解決するためポリエステルを構成す
るジカルボン酸成分（以下、単に酸成分と呼ぶ）として
テレフタル酸を主成分とした２つ以上の酸を用いるとい
う手段を講じた。[Means for Solving the Problems] In order to solve the above problems, the present invention uses two or more acids containing terephthalic acid as a main component as dicarboxylic acid components (hereinafter simply referred to as acid components) constituting the polyester. Measures were taken.
即ち、本発明はポリエステルを構成する酸成分としてテ
レフタル酸を主成分とした２つ以上の酸を用い、ジオー
ル或分として少なくともエチレングリコールを１０モル
％以上含んでなることを特徴とするポリエステル樹脂を
少なくとも内面層として設けた耐熱性を有するヒートシ
ール可能な包装材料である。That is, the present invention uses two or more acids mainly composed of terephthalic acid as the acid component constituting the polyester, and contains at least 10 mol% or more of ethylene glycol as the diol. A heat-sealable packaging material having heat resistance provided at least as an inner layer.
［作用コ
本発明の包装材料はレトルト殺菌処理後のシール強度の
低下が小さく、かつシール強度が２．３ｋｇ／ １ ５
ｍｍ中以上とすることができ、容器の蓋材として用い
た場合でもレトルト殺菌後のしわ等の変形の発生のおそ
れもない。[Effects] The packaging material of the present invention has a small decrease in seal strength after retort sterilization, and has a seal strength of 2.3 kg/15
It can be made to have a diameter of 1 mm or more, and there is no fear of deformation such as wrinkles after retort sterilization even when used as a lid material for a container.
［実施例］ 以下、本発明の包装材料を図面を参照して説明する。[Example] Hereinafter, the packaging material of the present invention will be explained with reference to the drawings.
図面は３層構造の例を示すもので、本発明の特徴をなす
ポリエステル樹脂からなる内面層１と，この内面層上に
中間層２を介して積層された外面層３とからなっている
。内面層１は酸成分としてテレフタル酸を主成分とした
２つ以上の酸からなり、ジオール成分として少なくとも
エチレングリコールを１０モル％以上を含むポリエステ
ル樹脂からなる。ジオール或分としてはエチレングリコ
ールのほか、１．４ブタンジオール、ネオペンチルグリ
コール、プロピレングリコール等を含むものであっても
よい。The drawing shows an example of a three-layer structure, consisting of an inner layer 1 made of polyester resin, which is a feature of the present invention, and an outer layer 3 laminated on this inner layer with an intermediate layer 2 in between. The inner layer 1 is made of a polyester resin containing two or more acids mainly containing terephthalic acid as an acid component, and at least 10 mol % or more of ethylene glycol as a diol component. In addition to ethylene glycol, the diol may also include 1.4-butane diol, neopentyl glycol, propylene glycol, and the like.
中間層２及び外面層３は包装材料の使用目的に応じ適宜
選択し得るものであり、例えばレトルト殺菌用容器の蓋
材として使用する場合は、中間層２としてエチレンービ
ニルアルコールコポリマー（ＥＶＯＨ） 、ポリ塩化ヒ
ニリデン（ＰＶＤＣ）、外面層３としてポリエチレンテ
レフタレート（ＰＥＴ）、ボリプロビレン（ｐｐ）、紙
、アルミニウム箔等を用いることができる。又、バウチ
として使用する場合は、中間層２としてアルミニウム箔
、ＥＶＯＨ，ＰＶＤＣ等を用いることができ、外面層３
として延伸ＰＥＴフィルム、延伸ナイロンフィルム等を
用いることができる。The intermediate layer 2 and the outer layer 3 can be selected as appropriate depending on the intended use of the packaging material. For example, when used as a lid material for a retort sterilization container, the intermediate layer 2 may be ethylene-vinyl alcohol copolymer (EVOH), Polyhynylidene chloride (PVDC), polyethylene terephthalate (PET) as the outer layer 3, polypropylene (pp), paper, aluminum foil, etc. can be used. When used as a pouch, aluminum foil, EVOH, PVDC, etc. can be used as the intermediate layer 2, and the outer layer 3
As the material, stretched PET film, stretched nylon film, etc. can be used.
なお、使用目的に応じて上記中間層２を省いたり、ある
いは中間層２を２以上の積層体としてもよい。Note that, depending on the purpose of use, the intermediate layer 2 may be omitted, or the intermediate layer 2 may be a laminate of two or more layers.
次に、本発明の包装材料をレトルト殺菌用容器に対する
蓋材として用いた具体例について説明する。Next, a specific example in which the packaging material of the present invention is used as a lid material for a retort sterilization container will be described.
なお、レトルト殺菌用容器はポリエチレンテレフタレー
トを用い、蓋材は二軸延仲ＰＥＴ（厚さ２５μｍ）シー
トの内面に下記表１に示す組成のポリエステル樹脂を積
層（厚み５０μｍ）シたものを用いた。The retort sterilization container was made of polyethylene terephthalate, and the lid material was a biaxially rolled PET (thickness: 25 μm) sheet with a polyester resin laminated (thickness: 50 μm) having the composition shown in Table 1 below. .
ヒートシール条件は２００℃、圧力１ ｋｇ ／ ｃｊ
，１秒とした。Heat sealing conditions are 200℃, pressure 1kg/cj
, 1 second.
上記実施例においてレトルト殺菌は１２０℃で３０分問
おこなった。In the above examples, retort sterilization was performed at 120° C. for 30 minutes.
また、リモネン吸着量は、上記容器内にリモネンを含む
飲料水を密封し、上記蓋体に１７０時間以上接触させた
のち、この飲料水を取り出し、蓋体中に吸着したリモネ
ンを定量の酢酸エチルで抽出し、溶液中のリモネンをガ
スクロマトグラフィで４ｐｊ定した。In addition, the amount of limonene adsorbed is determined by sealing drinking water containing limonene in the container, allowing it to come in contact with the lid for over 170 hours, then taking out the drinking water and dissolving the limonene adsorbed in the lid into a fixed amount of ethyl acetate. 4pj of limonene in the solution was determined by gas chromatography.
その結果を同様に表１に示す。なお、この吸着を評価す
る一つの尺度として溶解度パラメータ（ＳＰ値）も同時
に示した。このＳＰ値はプラスチック材料を揮発性のあ
る溶剤に溶解する際に溶解のしやすさを示す数値であっ
て、プラスチック材料のＳＰ１ｉａと溶剤のＳＰ値が近
いほど溶解しやすい、即ち吸着量が大きくなる。ＳＰ値
は一般に高分子物質と溶剤の蒸発潜熱、蒸発熱などから
算出される。The results are also shown in Table 1. Note that the solubility parameter (SP value) is also shown as one measure for evaluating this adsorption. This SP value is a value that indicates the ease of dissolving a plastic material in a volatile solvent.The closer the SP1ia of the plastic material is to the SP value of the solvent, the easier it is to dissolve, that is, the larger the amount of adsorption. Become. The SP value is generally calculated from the latent heat of vaporization, heat of vaporization, etc. of a polymeric substance and a solvent.
上記表１の結果から明らかなように、ポリエステル樹脂
内面層の融点が１２０℃以上または非品質タイプでない
と、レトルト殺菌時に内面層の一部が溶融し、蓋材が変
形する。また、ジオール成分としてはブタンジオールの
みではレトルト殺菌後にシール強度が極度に低下するが
、エチレングリコール単独又は１０モル％以上のエチレ
ングリコールとブタンジオールとの混合物を用いること
によりシール強度の低下を抑ホクすることができる。As is clear from the results in Table 1 above, if the polyester resin inner layer has a melting point of 120° C. or higher or is not of non-quality type, a portion of the inner layer will melt during retort sterilization and the lid material will be deformed. In addition, if butanediol is the only diol component, the seal strength will be extremely reduced after retort sterilization, but the decrease in seal strength can be suppressed by using ethylene glycol alone or a mixture of 10 mol% or more of ethylene glycol and butane diol. can do.
［発明の効果］
以上詳述した如く、本発明の包装材料はレトルト殺菌前
後におけるシール強度の低下がきわめて小さく、かつレ
トルト殺菌後の変形のおそれもない。さらに内容物中の
着香料等の有効成分の吸着が極めて少なく、食品、その
他加熱滅菌処理を必要とする内容物の包装材料として特
に有用である。[Effects of the Invention] As described in detail above, the packaging material of the present invention exhibits extremely small decrease in seal strength before and after retort sterilization, and there is no fear of deformation after retort sterilization. Furthermore, adsorption of active ingredients such as flavoring agents in the contents is extremely low, making it particularly useful as a packaging material for foods and other contents that require heat sterilization.
図面は本発明の包装材料の一例を示す断面図である。 １・・・内面層、２・・・中間層、３・・・外面層。 The drawing is a sectional view showing an example of the packaging material of the present invention. 1... Inner layer, 2... Middle layer, 3... Outer layer.
Claims (1)
酸を主成分とした２つ以上の酸、ジオール成分として少
なくともエチレングリコールを１０モル％以上含んでな
ることを特徴とするポリエステル樹脂を少なくとも内面
層として設けた耐熱性を有するヒートシール可能な包装
材料。(1) A polyester resin containing at least 10 mol% of two or more acids mainly containing terephthalic acid as the acid component constituting the polyester and at least 10 mol% of ethylene glycol as the diol component is provided as at least the inner layer. Heat-sealable packaging material with high heat resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1234963A JP3024977B2 (en) | 1989-09-11 | 1989-09-11 | Heat-sealable packaging material with heat resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1234963A JP3024977B2 (en) | 1989-09-11 | 1989-09-11 | Heat-sealable packaging material with heat resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0396346A true JPH0396346A (en) | 1991-04-22 |
| JP3024977B2 JP3024977B2 (en) | 2000-03-27 |
Family
ID=16978998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1234963A Expired - Fee Related JP3024977B2 (en) | 1989-09-11 | 1989-09-11 | Heat-sealable packaging material with heat resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3024977B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100389294B1 (en) * | 1998-09-25 | 2003-12-18 | 에스케이씨 주식회사 | Laminated polyester film and method for manufacturing the same |
| JP2004025659A (en) * | 2002-06-26 | 2004-01-29 | House Foods Corp | Lid material for inorganic container and inorganic container using it |
| KR100487388B1 (en) * | 1999-11-11 | 2005-05-03 | 에스케이씨 주식회사 | Two axially drawn polyester film having straight forward tearing property |
-
1989
- 1989-09-11 JP JP1234963A patent/JP3024977B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100389294B1 (en) * | 1998-09-25 | 2003-12-18 | 에스케이씨 주식회사 | Laminated polyester film and method for manufacturing the same |
| KR100487388B1 (en) * | 1999-11-11 | 2005-05-03 | 에스케이씨 주식회사 | Two axially drawn polyester film having straight forward tearing property |
| JP2004025659A (en) * | 2002-06-26 | 2004-01-29 | House Foods Corp | Lid material for inorganic container and inorganic container using it |
| JP4511104B2 (en) * | 2002-06-26 | 2010-07-28 | ハウス食品株式会社 | Inorganic container lid and inorganic container using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3024977B2 (en) | 2000-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |