JP2899973B2 - Easy-open packaging for sterilization - Google Patents
Easy-open packaging for sterilizationInfo
- Publication number
- JP2899973B2 JP2899973B2 JP30967687A JP30967687A JP2899973B2 JP 2899973 B2 JP2899973 B2 JP 2899973B2 JP 30967687 A JP30967687 A JP 30967687A JP 30967687 A JP30967687 A JP 30967687A JP 2899973 B2 JP2899973 B2 JP 2899973B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- polyethylene
- adhesive
- easy
- 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 - Fee Related
Links
Landscapes
- Packages (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は易開封性滅菌用包装体に関し、特にポリエチ
レン系不織布、紙基材等からなる透気性基材を使用した
易開封性滅菌用包装体に関する。
（従来の技術）
従来より合成樹脂系不織布等からなる透気性基材を用
いた易開封性滅菌袋は知られており、これらの製造方法
としては上記の合成樹脂系不織布の全面に溶剤系の易開
封性接着剤を塗布し、周縁を接着して製造されている
が、このような方法では易開封性接着剤が透気性基材中
に滲み込んで透気度を低下させる原因となり、これを防
止するために透気性基材にアンカー剤層を形成したり、
或は易開封性接着剤を格子状、点状に塗布しなければな
らないという欠点があった。
（解決すべき問題点）
本発明者は上記の欠点を改善し、透気性基材の透気性
を損なうことなく、容易に易開封性滅菌用包装体を得る
べく種々検討した結果本発明を完成したもので、本発明
の目的は透気性基材の透気性を損なわない開封性滅菌用
包装体を提供することである。
（問題点を解決するための手段）
すなわち、本発明は、一方の包装材に合成樹脂フィル
ム基材を用い、他方に透気性基材を用いて、両基材の周
縁を熱接着してなる易開封性滅菌用包装体において、透
気性基材全面に水性分散体100重量部に対し、低分子量
ポリエチレンを100〜1000重量部、ポリエチレン系微粒
状熱接着剤50〜500重量部を混合した水性の易開封性接
着剤を塗布成層し、最低製膜温度以下の温度で接着層を
形成したことを特徴とする易開封性滅菌用包装体であ
る。
本発明で使用する水性分散体とはポリエチレン、或は
エチレン−酢酸ビニル共重合体等を主成分として種々の
変性処理を行った水性分散体である。本発明で使用する
易開封性接着剤は、該水性分散体に低分子量ポリエチレ
ンとポリエチレン系微粒状熱接着剤とを混合する。低分
子量ポリエチレンとは分子量約5,000〜20,000程度のワ
ックス状のポリエチレンである。その配合量としては、
水性分散体100重量部に対し100〜1,000重量部である。1
00重量部以下では易開封性を生せず、また、1,000重量
部以上では接着が弱くなり、また、塗布膜をはじく傾向
が生ずる。すなわち、塗布膜が基材になじまず、剥離す
る傾向を示す。また、ポリエチレン系微粒状熱接着剤と
はエチレン−酢酸ビニル共重合体変性物、エチレン−ア
クリル酸エステル共重合体変性物、塩素化ポリプロピレ
ン等の混合物である。その配合量としては、水性分散体
100重量部に対し50〜500重量部である。50重量部以下で
は接着が弱くなり、他方、500重量部以上では接着が強
くなりすぎ、易開封性が得られない。そして、本発明で
使用する易開封性接着剤の好ましい組成としては水性分
散体100重量部に対して低分子量ポリエチレン100〜500
重量部、ポリエチレン系微粒状熱接着剤50〜200重量部
である。本発明に用いる易開封性接着剤は５〜15g/m2程
度の量で塗布することが好ましく、余り多量に塗布する
と透気性を損なう。そして、本発明では易開封性接着剤
は最低製膜温度より低い温度で加熱して接着層を形成し
て他方の合成樹脂フィルムの周縁と接着する。
本発明で使用される合成樹脂フィルムとしてはポリス
チレン、ポリエチレン、ポリプロピレン、ポリ塩化ビニ
ル、ポリカーポネート、ポリエステル等であり、また、
透気性基材としては、ポリエチレン、ポリプロピレン等
からなる合成樹脂製不織布、クラフト紙、和紙等の紙基
材等である。ポリエチレン不織布としてはタイベックと
して市販されているものが好ましい。
本発明の易開封性滅菌用包装体は、包装材基材同士を
重ね合せて、その周縁を熱接着した包装袋や、蓋材と容
器本体からなる容器等である。
次に実施例をもって本発明を更に詳細に説明する。
実施例１
厚さ0.5mmのポリスチレンシートとポリエチレン系不
織布（商品名：タイベック）とより易開封性滅菌用包装
体として易開封性包装袋を製造した。すなわち、エチレ
ン相互重合体よりなる水性分散体（東洋モートン（株）
製AD−37JD1198 固形分37％）100重量部に対し、低分
子量ポリエチレン（三井石油化学（株）製ケミパールＷ
−100 固形分40％）200重量部及びポリエチレン系微粒
状熱接着剤（東洋モートン（株）製AD−37R345 固形分
40％）100重量部を添加して得られた易開封性接着剤を
ポリエチレン系不織布の一面の全面に約10g/m2塗布成層
し、約100℃の最低製膜以下の温度で乾燥し接着層を形
成し、この接着層の上にポリスチレンシートをのせ加熱
加圧して両者の周縁を圧着して易開封性包装袋とした。
実施例２
厚さ3.0mmのポリエチレンシートと坪量70g/m2、透気
度100秒の紙基材とより易開封性滅菌用包装体を下記の
易開封性接着剤を使用した点以外は実施例１と全く同じ
手順によって製造した。
易開封性接着剤
水性分散体（AD−37JD1198） 100重量部
低分子量 ポリエチレン
（ケミパールＷ−100） 200重量部
（ケミパールＡ−100） 200重量部
ポリエチレン系微粒状熱接着剤
（AD−37R345） 100重量部
ケミパールＡ−100はケミパールＷ−100と同様、固形
分40％である。
（効果）
以上述べたように、本発明では合成樹脂フィルムと透
気性基材を用いた易開封性滅菌用包装体において、使用
する易開封性接着剤は前記のような特定の配合から成る
水性の易開封性接着剤であり、溶剤を使用することがな
いので取扱が容易であり、且つ、該易開封性接着剤によ
って接着層を形成するので、透気性を損なうことなく易
開封性を付与することができる等の効果を奏するのであ
る。Description: TECHNICAL FIELD The present invention relates to an easily-openable sterilization package, and more particularly to an easily-openable sterilization package using an air-permeable base material such as a polyethylene-based nonwoven fabric or a paper base. About the body. (Prior art) Conventionally, easy-open sterilization bags using a gas-permeable base material made of a synthetic resin nonwoven fabric or the like are known. It is manufactured by applying an easy-opening adhesive and bonding the periphery, but in such a method, the easy-opening adhesive oozes into the air-permeable base material and causes a decrease in air permeability. Forming an anchor agent layer on a permeable substrate to prevent
Alternatively, there is a drawback that the easy-opening adhesive must be applied in a grid-like or dot-like manner. (Problems to be solved) The present inventor has completed the present invention as a result of various studies to improve the above-mentioned drawbacks and to easily obtain an easily-openable sterilization package without impairing the air permeability of the air-permeable base material. SUMMARY OF THE INVENTION It is an object of the present invention to provide an openable sterilization package that does not impair the air permeability of a gas-permeable substrate. (Means for Solving the Problems) That is, in the present invention, a synthetic resin film substrate is used for one of the packaging materials, and an air permeable substrate is used for the other, and the peripheral edges of both substrates are thermally bonded. In the easily-opening sterile packaging, 100 parts by weight of the aqueous dispersion over the entire surface of the air-permeable base material, 100 to 1000 parts by weight of low-molecular-weight polyethylene, and 50 to 500 parts by weight of a polyethylene-based fine-grained thermal adhesive mixed, An easy-opening sterilizing package characterized in that an easy-opening adhesive is applied and layered to form an adhesive layer at a temperature equal to or lower than the minimum film forming temperature. The aqueous dispersion used in the present invention is an aqueous dispersion obtained by subjecting various modification treatments to a main component such as polyethylene or an ethylene-vinyl acetate copolymer. The easily-openable adhesive used in the present invention is obtained by mixing a low-molecular-weight polyethylene and a polyethylene-based particulate thermal adhesive with the aqueous dispersion. Low molecular weight polyethylene is wax-like polyethylene having a molecular weight of about 5,000 to 20,000. As the compounding amount,
It is 100 to 1,000 parts by weight based on 100 parts by weight of the aqueous dispersion. 1
When the amount is less than 00 parts by weight, easy-opening property is not produced, and when the amount is more than 1,000 parts by weight, the adhesion is weakened and the coating film tends to repel. In other words, the coating film does not adapt to the substrate and tends to peel off. In addition, the polyethylene-based particulate thermal adhesive is a mixture of modified ethylene-vinyl acetate copolymer, modified ethylene-acrylate copolymer, chlorinated polypropylene, and the like. The amount of the aqueous dispersion
50 to 500 parts by weight per 100 parts by weight. If the amount is less than 50 parts by weight, the adhesion will be weak, while if it is more than 500 parts by weight, the adhesion will be too strong and easy opening property will not be obtained. And the preferred composition of the easy-open adhesive used in the present invention is 100 to 500 parts by weight of the low-molecular-weight polyethylene 100 to 500 parts by weight of the aqueous dispersion.
Parts by weight, 50 to 200 parts by weight of a polyethylene-based particulate thermal adhesive. The easy-open adhesive used in the present invention is preferably applied in an amount of about 5 to 15 g / m 2 , and if applied in an excessively large amount, the air permeability is impaired. In the present invention, the easily-openable adhesive is heated at a temperature lower than the minimum film-forming temperature to form an adhesive layer and adhere to the periphery of the other synthetic resin film. The synthetic resin film used in the present invention is polystyrene, polyethylene, polypropylene, polyvinyl chloride, polycarbonate, polyester, and the like,
Examples of the air-permeable base material include a synthetic resin nonwoven fabric made of polyethylene, polypropylene, and the like, and a paper base material such as kraft paper and Japanese paper. As the polyethylene nonwoven fabric, those commercially available as Tyvek are preferred. The easily-openable package for sterilization of the present invention is a packaging bag in which packaging materials are overlapped with each other and their peripheral edges are heat-bonded, or a container comprising a lid and a container body. Next, the present invention will be described in more detail with reference to examples. Example 1 A polystyrene sheet having a thickness of 0.5 mm, a polyethylene-based nonwoven fabric (trade name: Tyvek) and an easily-openable packaging bag were manufactured as a more easily-openable sterilization package. That is, an aqueous dispersion comprising an ethylene interpolymer (Toyo Morton Co., Ltd.)
100 parts by weight of AD-37JD1198 manufactured by Mitsui Petrochemical Co., Ltd.
-100 solid content 40%) 200 parts by weight and polyethylene-based fine-grained thermal adhesive (AD-37R345 manufactured by Toyo Morton Co., Ltd.)
40%) 100 parts by weight of the entire surface of about 10 g / m 2 coating layered on one surface of the polyethylene nonwoven fabric easily openable adhesive agent obtained by adding, dried adhesive Lowest film-forming temperature below about 100 ° C. A layer was formed, a polystyrene sheet was placed on the adhesive layer, and the edges of both were pressed under heat and pressure to obtain an easy-open packaging bag. Example 2 A polyethylene sheet having a thickness of 3.0 mm, a basis weight of 70 g / m 2 , a paper base material having an air permeability of 100 seconds, and a more easily-openable sterilizing package were prepared using the following easily-openable adhesive. Manufactured by exactly the same procedure as in Example 1. Aqueous dispersion of easy-opening adhesive (AD-37JD1198) 100 parts by weight Low molecular weight polyethylene (Chemipearl W-100) 200 parts by weight (Chemipearl A-100) 200 parts by weight Polyethylene microparticulate thermal adhesive (AD-37R345) 100 Parts by weight Chemipearl A-100, like Chemipearl W-100, has a solids content of 40%. (Effects) As described above, in the present invention, in the easily-openable sterilization package using a synthetic resin film and an air-permeable base material, the easily-openable adhesive used is a water-based adhesive having the above-described specific composition. Easy-to-open adhesive, which is easy to handle because no solvent is used, and because the adhesive layer is formed by the easy-open adhesive, imparts easy-openability without impairing air permeability. It is possible to achieve such effects as being able to do so.
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B65D 67/00 - 79/02 B65D 81/18 - 81/30 B65D 81/38 B32B 1/00 - 35/00 Continuation of the front page (58) Field surveyed (Int. Cl. 6 , DB name) B65D 67/00-79/02 B65D 81/18-81/30 B65D 81/38 B32B 1/00-35/00
Claims (1)
に透気性基材を用いて、両基材の周縁を熱接着してなる
易開封性滅菌用包装体において、透気性基材全面に水性
分散体100重量部に対し、低分子量ポリエチレンを100〜
1000重量部、ポリエチレン系微粒状熱接着剤50〜500重
量部を混合した水性の易開封性接着剤を塗布成層し、最
低製膜温度以下の温度で接着層を形成したことを特徴と
する易開封性滅菌用包装体。(57) [Claims] Using a synthetic resin film base material for one of the packaging materials and an air permeable base material for the other, an easily openable sterilization package obtained by heat-bonding the edges of both base materials. 100 parts by weight of the dispersion, 100 to 100 parts by weight of low molecular weight polyethylene
An aqueous easy-opening adhesive mixed with 1000 parts by weight and 50 to 500 parts by weight of a polyethylene-based microparticulate thermal adhesive was applied and layered, and the adhesive layer was formed at a temperature lower than the minimum film forming temperature. Openable sterilization package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30967687A JP2899973B2 (en) | 1987-12-09 | 1987-12-09 | Easy-open packaging for sterilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30967687A JP2899973B2 (en) | 1987-12-09 | 1987-12-09 | Easy-open packaging for sterilization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01153471A JPH01153471A (en) | 1989-06-15 |
| JP2899973B2 true JP2899973B2 (en) | 1999-06-02 |
Family
ID=17995931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30967687A Expired - Fee Related JP2899973B2 (en) | 1987-12-09 | 1987-12-09 | Easy-open packaging for sterilization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2899973B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263219B (en) * | 2018-10-09 | 2021-02-12 | 武汉云天职业服饰有限公司 | Waterproof breathable fabric and manufacturing method thereof |
-
1987
- 1987-12-09 JP JP30967687A patent/JP2899973B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01153471A (en) | 1989-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |