JPH0396345A - Heat sealable package - Google Patents
Heat sealable packageInfo
- Publication number
- JPH0396345A JPH0396345A JP23496289A JP23496289A JPH0396345A JP H0396345 A JPH0396345 A JP H0396345A JP 23496289 A JP23496289 A JP 23496289A JP 23496289 A JP23496289 A JP 23496289A JP H0396345 A JPH0396345 A JP H0396345A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- layer
- value
- polyester resin
- packaging material
- 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
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 7
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 6
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 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 5
- QQVIHTHCMHWDBS-UHFFFAOYSA-N perisophthalic acid Natural products OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001361 adipic acid Substances 0.000 claims abstract description 4
- 239000000539 dimer Substances 0.000 claims abstract description 4
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 claims abstract description 3
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 3
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000005022 packaging material Substances 0.000 claims description 17
- 229920001634 Copolyester Polymers 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 12
- 229920001225 polyester resin Polymers 0.000 abstract description 9
- 239000004645 polyester resin Substances 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 7
- 229920001577 copolymer Polymers 0.000 abstract description 3
- 239000002304 perfume Substances 0.000 abstract 1
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 18
- 229940087305 limonene Drugs 0.000 description 9
- 235000001510 limonene Nutrition 0.000 description 9
- -1 polyethylene Polymers 0.000 description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 description 8
- 239000005020 polyethylene terephthalate Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000003205 fragrance Substances 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
- 238000010586 diagram Methods 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 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
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000005021 flexible packaging material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Polyesters Or Polycarbonates (AREA)
- Wrappers (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は内容物の変質を防止し、かつヒートシール性の
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 [Field of Industrial Application] The present invention relates to a polyester resin packaging material that prevents deterioration of contents and has good heat sealability.
［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、ポリプロピ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
に戊形する過程で酸化防止剤、′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
、内容物中の着香或分その他有効成分の包装材への吸着
の問題がある。However, during the process of forming packaging materials made of polyolefin into films, antioxidants and other additives are eluted and transferred to the packaged contents, and furthermore, the polyolefin odor transfers, resulting in a change in taste of the contents. However, there are problems such as the generation of off-odor, and the adsorption of fragrances or other active ingredients in the contents onto the packaging material.
上記吸着は、溶解度バラメーター（ＳＰ値）と相関関係
があることが知られており、例えば特開昭５７−１８３
８５４号などに示されている。It is known that the above adsorption has a correlation with the solubility parameter (SP value).
No. 854, etc.
即ち、ＳＰ値は、プラスチック材料を揮発性のある溶剤
に溶解する際の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ＳＰ値と溶剤の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
。In other words, the SP value is a value that indicates the ease of dissolving a plastic material in a volatile solvent.The closer the SP value of the plastic material is to the SP value of the solvent, the easier it is to dissolve. The amount becomes larger. The SP value is generally calculated from the latent heat of vaporization, heat of vaporization, etc. of a polymeric substance and a solvent.
事実、ポリエチレンはリモネンの吸着が大きいがリモネ
ンのＳＰ値は８，３３、ポリエチレンのＳＰ値は８．０
０である。In fact, polyethylene has a large adsorption of limonene, but the SP value of limonene is 8.33, and the SP value of polyethylene is 8.0.
It is 0.
このような問題を改善するため異臭発生がなく、しかも
吸着性に優れたポリエチレンテレフタレー｝ （ＰＥＴ
）を包装材料の最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。To improve this problem, we have developed polyethylene terephthalate (PET
) has been proposed to be used as the innermost layer of packaging material. However, PET has a problem with heat sealability, and a solution to this problem has been desired.
包装材料としてのヒートシール性は、１２０〜１８０℃
のヒートシール温度で１．０ ｋｇ／ １ ５ ａｍ巾
以上のシール強度（Ｔ型剥Ｍ）がなければ不十分である
。Heat sealability as a packaging material is 120-180℃
It is insufficient if there is no sealing strength (T-shaped peeling M) of 1.0 kg/15 am width or more at a heat sealing temperature of .
［発明が解決しようとする課題］
吸着性、ヒートシール性を満足させるためには、酸成分
、ジオール成分を種々組み合わせた共重合体を検討する
ことが存効であるが、従来はその組成を適当に組み合わ
せて共重合ポリエステルを作成し、その後吸着性、ヒー
トシール性等について評価するといった、試行錯誤を繰
り返さなければならなかった。[Problems to be Solved by the Invention] In order to satisfy adsorption and heat sealability, it is effective to consider copolymers with various combinations of acid components and diol components. A process of repeated trial and error was required, such as creating a copolymerized polyester by appropriately combining the materials, and then evaluating adsorption properties, heat sealability, etc.
そこで本発明者らは、種々の共重合ポリエステルについ
て検討を重ねた結果、ＳＰ値と各成分のモル％に一定の
相関関係が成立することを見出し、このＳＰ値を規定す
ることにより吸着性を満足させることができ、しかもヒ
ートシール性についても満足させることがわかり、本発
明を完或するに致った。As a result of repeated studies on various copolymerized polyesters, the present inventors found that a certain correlation exists between the SP value and the mole percent of each component, and by specifying this SP value, the adsorption property can be improved. It was found that the heat sealability was satisfied, and the present invention was completed.
［課題を解決するための手段］
即ち、本発明は式［１］で算出される溶解パラメータの
ｔＢＹが９．８以上である共重合ポリエステル樹脂を少
なくとも内面層として有するヒートシール性包装材料：
Ｙ−９．９４９ −０，ロ０３ ａ． ｔ ＋
０ − ００７ ａ ２＋ ０−００３ ａ ＋
０．００２ ａ ４−０．０１８ａ ｓ３
＋０．００ｌ ｂ −０．００２ ｂ２
・・・［１］１
（式中 ａ１−テレフタル酸、
ａ −イソフタル酸、ａ３−アジピン酸２
ａ −グルタル酸、ａ５−ダイマー酸
４
ｂｌ一エチレングリコール、
ｂ２−１．４−ブタンジオーノレ
のモル％であり、ａ −ａ５のいずれか２以上、１
ｂ，ｂ２のいずれか１以上が必ず存在する）１
を提供するものである。[Means for Solving the Problems] That is, the present invention provides a heat-sealable packaging material having at least an inner layer of a copolymerized polyester resin whose solubility parameter tBY calculated by formula [1] is 9.8 or more: Y -9.949 -0,ro03 a. t +
0 - 007 a 2+ 0-003 a +
0.002 a 4-0.018a s3 +0.00l b -0.002 b2
... [1] 1 (In the formula, a1-terephthalic acid, a-isophthalic acid, a3-adipic acid, 2 a-glutaric acid, a5-dimer acid, 4 bl-ethylene glycol, b2-1.4-butanedione mole%) This provides 1 (where at least two of a - a5 and at least one of 1 b and b2 are always present).
吸着性の目安として、香気成分であるリモネンの吸着量
を指標とすることが一般に行なわれている。ポリエチレ
ンのリモネン吸着量を測定したとこる３４ｍｇ／ｇであ
った。As a measure of adsorption, the amount of adsorption of limonene, which is a fragrance component, is generally used as an index. The amount of limonene adsorbed on polyethylene was measured and was 34 mg/g.
そこで、まず種々の共重合ポリエステルのＳＰ値（実験
値）（Ａ）とリモネン吸着ｆｆｉ （Ｂ）との関係を各
々プロットして図２を得た。Therefore, first, the relationship between the SP value (experimental value) (A) and limonene adsorption ffi (B) of various copolymerized polyesters was plotted to obtain FIG. 2.
そこでポリエチレンのリモネン吸着量を上図に適用して
ＳＰ値を求めると、Ａ−９．８となり、従ってＡが９．
８以上であれば共重合ポリエステルは吸着性を満足させ
ることがわかった。Therefore, when the SP value is calculated by applying the amount of limonene adsorbed by polyethylene to the above diagram, it becomes A-9.8, so A is 9.
It was found that the copolymerized polyester satisfies the adsorptivity when it is 8 or more.
上記結果に従い、ＳＰ値を満足させるポリエステルの各
成分のモル％を検討、解析したところ、上記式［１１が
導かれた。According to the above results, the mole % of each component of the polyester that satisfies the SP value was studied and analyzed, and the above formula [11] was derived.
［作用］
本発明の包装材料は少なくとも内面層がＳＰ値として９
．８以上、酸成分を２以上含む共重合ポリエステル樹脂
から構威されているため、内容物中の香料等の有効或分
の吸着を著しく改善することができ、かつヒートシール
性にすぐれたものとなる。[Function] In the packaging material of the present invention, at least the inner layer has an SP value of 9.
．． Since it is made of a copolyester resin containing 8 or more and 2 or more acid components, it can significantly improve the effective adsorption of fragrances, etc. in the contents, and has excellent heat sealing properties. Become.
［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
共重合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、イソフタ
ル酸、アジビン酸、グルタル酸、ダイマー酸から選ばれ
る少なくとも２種からなるものを主成分とし、ジオール
或分としてエチレングリコール及び１．４−ブタンジオ
ールから選ばれる少なくとも１種を含み上記式［１］の
Ｙ値が９．８以上のポリエステル樹脂から構成されてい
る。The drawing shows an example of a three-layer structure, which consists of an inner layer 1 made of copolyester resin, which is a feature of the present invention, and an outer layer laminated on this inner layer with an intermediate layer 2 interposed therebetween. . The inner layer 1 mainly contains at least two acid components selected from terephthalic acid, isophthalic acid, adipic acid, glutaric acid, and dimer acid, and a diol component selected from ethylene glycol and 1,4-butanediol. The polyester resin contains at least one type of polyester resin having a Y value of 9.8 or more in the above formula [1].
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、例えば良好なバリアー性を必要
とする場合は、中間層２として、エチレンビニルアルコ
ール（ＥＶＯＨ）、アルミニウム箔等の金属箔、ポリ塩
化ビニリデン（ＰＶＤＣ）等を用い、外面層３としてポ
リエチレンテレフタレート（ＰＥＴ）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, if good barrier properties are required, the intermediate layer 2 may be ethylene vinyl alcohol (EVOH), aluminum foil, etc. For the outer layer 3, polyethylene terephthalate (PET) or the like 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層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.
例えば内容物の包装材への吸着防止のみを主として考慮
する場合は中間層２を省き、内面層１として上述の構成
からなるポリエステル樹脂（例えば厚み２０〜５０μｌ
ｌ）を用い、外面層３としてポリエチレンテレフタレー
ト、ナイロンあるいは二軸延伸ボリブロビレンを用いた
２層構造のものとしてもよい。For example, if the main consideration is to prevent the contents from adsorbing to the packaging material, the intermediate layer 2 may be omitted, and the inner layer 1 may be made of a polyester resin having the above-mentioned structure (e.g., 20 to 50 μl thick).
1), and may have a two-layer structure using polyethylene terephthalate, nylon, or biaxially oriented polypropylene as the outer layer 3.
次に本発明の包装材料をＰＥＴからなる容器に対する蓋
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 container made of PET will be described.
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所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測定し
た。After sealing drinking water containing limonene in the container and contacting it with the lid for 170 hours, take out the drinking water,
Limonene adsorbed in the lid was extracted with a predetermined amount of ethyl acetate, and limonene in the solution was measured by gas chromatography.
その結果を表１に示す。なお、同表中には、同時にヒー
トシール強度、ガラス転移点（ Ｔ ｇ）及び融点（Ｔ
ｍ）も示すとともに、比較例も併せて示した。The results are shown in Table 1. The same table also includes heat seal strength, glass transition point (Tg), and melting point (Tg).
m) is also shown, as well as comparative examples.
蓋材は二軸延伸ＰＥＴ （厚さ２５μＩｍ）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コーティ
ング（厚み５０μｓ）Ｌたちのを用いた。The lid material used was a biaxially stretched PET (thickness: 25 μm) sheet whose inner surface was coated with a polyester resin having the composition shown in Table 1 below (thickness: 50 μs).
［発明の効果］
以上述べたように、包装材料として好ましい性質を有す
る共重合ポリエステルを得るためには、各或分比を本発
明に示される式に適用して計算することができるので、
従来のように試行錯誤することなく目的とする共重合ポ
リエステルを得ることができる。そして、本発明の包装
材料は上述の共重合ポリエステルを内面層として用いて
いるので、内容物中の着香料等の有効成分の吸着が極め
て少なく、かつヒートシール性も良好なため、食品、ト
イレタリー製品、医薬品等種々の包装材料として有用で
ある。[Effects of the Invention] As described above, in order to obtain a copolyester having properties preferable as a packaging material, calculations can be made by applying each proportion to the formula shown in the present invention.
The desired copolyester can be obtained without the conventional trial and error. Since the packaging material of the present invention uses the above-mentioned copolymerized polyester as the inner layer, it has very little adsorption of active ingredients such as flavorings in the contents, and has good heat-sealing properties, so it can be used for foods, toiletries, etc. It is useful as a packaging material for various products, medicines, etc.
第１図は本発明の包装材料の一例を示す断面図、第２図
は本発明を説明する線図である。
１・・・内面層、２・・・中間層、３・・・外面層。FIG. 1 is a sectional view showing an example of the packaging material of the present invention, and FIG. 2 is a diagram illustrating the present invention. 1... Inner layer, 2... Middle layer, 3... Outer layer.
Claims (1)
Ｙが９．８以上である共重合ポリエステル樹脂を少なく
とも内面層として有するヒートシール性包装材料： Ｙ＝９．９４９−０．００３ａ＿１＋０．００７ａ＿２
＋０．００３ａ＿３＋０．００２ａ＿４−０．０１８ａ
＿５＋０．００１ｂ＿１−０．００２ｂ＿２・・・［１
］（式中ａ＿１＝テレフタル酸、 ａ＿２＝イソフタル酸、ａ＿３＝アジピン酸ａ＿４＝グ
ルタル酸、ａ＿５＝ダイマー酸 ｂ＿１＝エチレングリコール、 ｂ＿２＝１，４−ブタンジオール のモル％であり、ａ＿１〜ａ＿５のいずれか２以上、ｂ
＿１、ｂ＿２のいずれか１以上が必ず存在する）(1) A heat-sealable packaging material having at least an inner layer of a copolyester resin whose solubility parameter value Y calculated by the following formula [1] is 9.8 or more: Y=9.949-0.003a_1+0. 007a_2
+0.003a_3+0.002a_4-0.018a
_5+0.001b_1-0.002b_2...[1
] (In the formula, a_1 = terephthalic acid, a_2 = isophthalic acid, a_3 = adipic acid, a_4 = glutaric acid, a_5 = dimer acid b_1 = ethylene glycol, b_2 = mol% of 1,4-butanediol, and a_1 to a_5 Any 2 or more, b
One or more of _1 and b_2 must exist)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23496289A JP2899323B2 (en) | 1989-09-11 | 1989-09-11 | Manufacturing method of heat sealable packaging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23496289A JP2899323B2 (en) | 1989-09-11 | 1989-09-11 | Manufacturing method of heat sealable packaging material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0396345A true JPH0396345A (en) | 1991-04-22 |
| JP2899323B2 JP2899323B2 (en) | 1999-06-02 |
Family
ID=16978985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23496289A Expired - Lifetime JP2899323B2 (en) | 1989-09-11 | 1989-09-11 | Manufacturing method of heat sealable packaging material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2899323B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325245A (en) * | 1991-04-25 | 1992-11-13 | Toppan Printing Co Ltd | Packaging material |
| JP2016198918A (en) * | 2015-04-08 | 2016-12-01 | 住友ベークライト株式会社 | Sealant film, multilayer film, and package |
-
1989
- 1989-09-11 JP JP23496289A patent/JP2899323B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325245A (en) * | 1991-04-25 | 1992-11-13 | Toppan Printing Co Ltd | Packaging material |
| JP2016198918A (en) * | 2015-04-08 | 2016-12-01 | 住友ベークライト株式会社 | Sealant film, multilayer film, and package |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2899323B2 (en) | 1999-06-02 |
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