JPH07112865B2 - Gas barrier cap - Google Patents
Gas barrier capInfo
- Publication number
- JPH07112865B2 JPH07112865B2 JP3187623A JP18762391A JPH07112865B2 JP H07112865 B2 JPH07112865 B2 JP H07112865B2 JP 3187623 A JP3187623 A JP 3187623A JP 18762391 A JP18762391 A JP 18762391A JP H07112865 B2 JPH07112865 B2 JP H07112865B2
- Authority
- JP
- Japan
- Prior art keywords
- gas barrier
- cap
- ethylene
- present
- polyethylene
- 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 - Lifetime
Links
- 230000004888 barrier function Effects 0.000 title claims description 19
- 239000004698 Polyethylene Substances 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 5
- 239000011342 resin composition Substances 0.000 claims description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 239000004840 adhesive resin Substances 0.000 claims description 3
- 229920006223 adhesive resin Polymers 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 6
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229940034610 toothpaste Drugs 0.000 description 3
- 239000000606 toothpaste Substances 0.000 description 3
- 229920003354 Modic® Polymers 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
Landscapes
- Closures For Containers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、歯磨、食品、化粧品、
医薬品、接着剤などのガスバリヤ−性容器に好適なガス
バリヤー性キャップに関する。The present invention relates to toothpaste, foods, cosmetics,
The present invention relates to a gas barrier cap suitable for a gas barrier container for medicines, adhesives and the like.
【０００２】[0002]
【従来の技術】歯磨、食品、化粧品、医薬品、接着剤等
の容器として、ラミネ−トチュ−ブタイプのものがあ
る。この種の容器は、胴部はアルミ箔又は、エチレン−
ビニルアルコ−ル共重合体（ポリエチレンとの二層又は
三層構成）等によりガスバリヤ−性が付与されており、
又、内容物取出し口にはアルミ箔などによりシ−ルが施
されている。しかし、使用の際開封された後は、通常ポ
リエチレン等の樹脂により成形されたキャップが使用さ
れるが、この材料はガスバリヤ−性に劣るため、この部
分より内容成分、例えば香料等の放散が生じる。又、逆
にこの部分を通して空気中から酸素等のガスの侵入によ
り内容成分が変質する等といった問題点があった。キャ
ップ自体をガスバリヤ−性のエチレン−ビニルアルコ−
ル共重合体で成形できればよいが、この材料単独では成
形品はもろく、成形性を向上させようとしてポリエチレ
ンとブレンドしようとしても相溶しない。2. Description of the Related Art As a container for toothpaste, foods, cosmetics, pharmaceuticals, adhesives, there is a laminate tube type container. This type of container has aluminum foil or ethylene-
Gas barrier properties are imparted by vinyl alcohol copolymer (two-layer or three-layer structure with polyethylene),
The contents outlet is sealed with aluminum foil or the like. However, after being opened at the time of use, a cap formed of a resin such as polyethylene is usually used, but this material is inferior in gas barrier property, so that content components such as fragrances are emitted from this portion. . On the contrary, there is a problem that the content components are deteriorated by the invasion of gas such as oxygen from the air through this portion. The cap itself is a gas barrier ethylene-vinyl alcohol
However, if this material alone is used, the molded product is brittle, and even if it is attempted to be blended with polyethylene in order to improve moldability, it is incompatible.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、こうした実
状の下に、成形性、ガスバリヤ−性に優れたキャップを
提供することを目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a cap excellent in moldability and gas barrier property under these circumstances.
【０００４】[0004]
【課題を解決するための手段】本発明者は、鋭意検討し
た結果、特定の樹脂の組合せによる組成物が成形性、ガ
スバリヤ−性に優れていることを見出し、本発明に至っ
た。As a result of intensive studies, the present inventor has found that a composition comprising a combination of specific resins is excellent in moldability and gas barrier property, and arrived at the present invention.
【０００５】すなわち、本発明は、(A)ポリエチレン 0
〜50重量％、(B)エチレン−ビニルアルコール共重合体
又は、エチレン−酢酸ビニル共重合体けん化物10〜50重
量％及び、(C)カルボン酸変性ポリエチレン接着性樹脂1
0〜90重量％からなる樹脂組成物から成形されたことを
特徴とするガスバリヤ−性キャップである。That is, the present invention relates to (A) polyethylene 0
~ 50 wt%, (B) ethylene-vinyl alcohol copolymer or 10-50 wt% ethylene-vinyl acetate copolymer saponification product, and (C) carboxylic acid-modified polyethylene adhesive resin 1
A gas barrier cap formed from a resin composition of 0 to 90% by weight.
【０００６】本発明に使用する樹脂材料について説明す
る。The resin material used in the present invention will be described.
【０００７】本発明のガスバリヤ−性キャップは、(A)
ポリエチレン、(B)エチレン−ビニルアルコール共重合
体又は、エチレン酢酸ビニル共重合体けん化物、及び
(C)カルボン酸変性ポリエチレン接着性樹脂からなる樹
脂組成物であり、あらかじめメルトブレンド（溶融混
練）された材料から成形される。The gas barrier cap of the present invention comprises (A)
Polyethylene, (B) ethylene-vinyl alcohol copolymer or saponified ethylene-vinyl acetate copolymer, and
(C) A resin composition comprising a carboxylic acid-modified polyethylene adhesive resin, which is molded from a material that has been melt-blended (melt-kneaded) in advance.
【０００８】上記組成物において(A)と(B)成分のみでは
相溶性が悪く、均一に分散せず、ガスバリヤー性の向上
も十分ではない。In the above composition, the components (A) and (B) alone have poor compatibility, do not disperse uniformly, and the gas barrier property is not sufficiently improved.
【０００９】上記(A)ポリエチレンとしては、高密度ポ
リエチレン（ＨＤＰＥ）、中密度ポリエチレン、低密度
ポリエチレン、直鎖状低密度ポリエチレン（ＬＬＤＰ
Ｅ）が使用できるが、高密度ポリエチレンが好ましい。The above (A) polyethylene includes high density polyethylene (HDPE), medium density polyethylene, low density polyethylene and linear low density polyethylene (LLDP).
E) can be used, but high density polyethylene is preferred.
【００１０】(B)エチレン−ビニルアルコール共重合体
又は、エチレン−酢酸ビニル共重合体けん化物は、エチ
レン共重合比率（モル％）が小さい程ガスバリヤー性は
大きくなるが、他方、成形性、成形品の物性は低下す
る。後述の実施例では44％のものを使用した。In the saponified product of ethylene-vinyl alcohol copolymer or ethylene-vinyl acetate copolymer (B), the gas barrier property increases as the ethylene copolymerization ratio (mol%) decreases, while the moldability, The physical properties of the molded product deteriorate. In the examples described later, 44% was used.
【００１１】(C)成分のカルボン酸変性は、無水マレイ
ン酸によるものが好ましい。具体的には、例えば商品名
ＭＯＤＩＣ（三菱油化（株）製）や商品名アドマー（三
井石油化学工業（株）製）等の市販品を使用することが
できる。The carboxylic acid modification of the component (C) is preferably performed with maleic anhydride. Specifically, commercially available products such as trade name MODIC (manufactured by Mitsubishi Petrochemical Co., Ltd.) and trade name Admer (manufactured by Mitsui Petrochemical Industry Co., Ltd.) can be used.
【００１２】これら(A)、(B)、(C)各成分の混合比は、
重量で(A):(B):(C)＝0〜50：10〜50：10〜90の範囲で用
いられるが、成形性も考慮すると好ましくは10〜50：30
〜50：30〜50である。The mixing ratio of these components (A), (B) and (C) is
It is used in the range of (A) :( B) :( C) = 0 to 50:10 to 50:10 to 90 by weight, but it is preferably 10 to 50:30 in consideration of moldability.
~ 50: 30 to 50.
【００１３】本発明においては上記の(A)、(B)、(C)か
らなる樹脂組成物からキャップを構成することにより、
従来製品に比べてガスバリヤ−性を格段に改善すること
ができる。In the present invention, by forming a cap from the resin composition comprising (A), (B) and (C) above,
The gas barrier property can be remarkably improved as compared with the conventional product.
【００１４】本発明のガスバリヤ−性キャップは、その
成形材料として上記の選択された材料を使用することが
重要であり、キャップ自体の物理的構造は従来のものと
同様で良く、成形方法についても同様であり、一般的な
樹脂成形機を用いて射出成形等により成形することがで
きる。In the gas barrier cap of the present invention, it is important to use the above-selected material as the molding material, and the physical structure of the cap itself may be the same as that of the conventional one, and the molding method can be also used. The same applies, and molding can be performed by injection molding or the like using a general resin molding machine.
【００１５】[0015]
【実施例】以下に実施例を挙げて本発明を更に詳細に説
明する。The present invention will be described in more detail with reference to the following examples.
【００１６】ガスバリヤ−性を評価するため、表に示す
材料から、厚さ１mmのシ−トを成形し、このものの酸素
透過率を測定した。In order to evaluate the gas barrier property, a sheet having a thickness of 1 mm was molded from the materials shown in the table and the oxygen permeability of this sheet was measured.
【００１７】[0017]
【表１】 注 (A) ＨＤＰＥ (B) エバ−ル (C) ＭＯＤＩＣ ＊ 上段20℃、ＲＨ65％、下段20℃、ＲＨ85％ 表より明らかなように、本発明の特定三成分系樹脂組成
物により構成されたキャップは、優れたバリヤ−性を示
す。[Table 1] Note (A) HDPE (B) Ever (C) MODIC * Upper 20 ° C, RH 65%, Lower 20 ° C, RH 85% As is apparent from the table, it is composed of the specific three-component resin composition of the present invention. The cap exhibits excellent barrier properties.
【００１８】[0018]
【発明の効果】以上説明したように、本発明によればキ
ャップのガスバリヤ−性を著しく改善することができる
ので、従来のガスバリヤ−性の各種容器と組合せて用い
ることにより開栓後の内容物の芳香や揮発成分の逃散、
変質等を一層効果的に防止することができ、内容物の品
質を長期にわたって保持することができると同時にメ−
カ−の品質保障期間が大幅に長くなる。As described above, according to the present invention, the gas barrier property of the cap can be remarkably improved. Therefore, by using it in combination with various conventional containers having a gas barrier property, the contents after opening the cap can be improved. Escape of aroma and volatile components of
It is possible to more effectively prevent alteration and the like, and it is possible to maintain the quality of the contents for a long time and at the same time,
The quality guarantee period of the car is significantly extended.
【００１９】従って、本発明のキャップは、歯磨、医薬
品、飲食品、あるいは接着剤用の容器用キャップとして
きわめて有用である。Therefore, the cap of the present invention is very useful as a container cap for toothpaste, medicines, foods and drinks, or adhesives.
Claims (1)
レン−ビニルアルコール共重合体又は、エチレン−酢酸
ビニル共重合体けん化物10〜50重量％及び、(C)カルボ
ン酸変性ポリエチレン接着性樹脂10〜90重量％からなる
樹脂組成物から成形されたことを特徴とするガスバリヤ
−性キャップ。1. (A) 0 to 50% by weight polyethylene, (B) 10 to 50% by weight saponified ethylene-vinyl alcohol copolymer or ethylene-vinyl acetate copolymer, and (C) carboxylic acid-modified polyethylene. A gas barrier cap formed from a resin composition comprising 10 to 90% by weight of an adhesive resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3187623A JPH07112865B2 (en) | 1991-07-26 | 1991-07-26 | Gas barrier cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3187623A JPH07112865B2 (en) | 1991-07-26 | 1991-07-26 | Gas barrier cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05124666A JPH05124666A (en) | 1993-05-21 |
| JPH07112865B2 true JPH07112865B2 (en) | 1995-12-06 |
Family
ID=16209349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3187623A Expired - Lifetime JPH07112865B2 (en) | 1991-07-26 | 1991-07-26 | Gas barrier cap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07112865B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008120416A (en) * | 2006-11-10 | 2008-05-29 | Toppan Printing Co Ltd | Liquid container |
| JP6621505B2 (en) * | 2018-06-08 | 2019-12-18 | 日本クロージャー株式会社 | Injection molded body |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61232162A (en) * | 1985-04-09 | 1986-10-16 | 東洋製罐株式会社 | Multilayer plastic-cap |
| JPS62220455A (en) * | 1986-03-19 | 1987-09-28 | 昭和電工株式会社 | Sealing material for cover of vessel |
-
1991
- 1991-07-26 JP JP3187623A patent/JPH07112865B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05124666A (en) | 1993-05-21 |
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