JPH02152660A - Plastic bag - Google Patents
Plastic bagInfo
- Publication number
- JPH02152660A JPH02152660A JP30351488A JP30351488A JPH02152660A JP H02152660 A JPH02152660 A JP H02152660A JP 30351488 A JP30351488 A JP 30351488A JP 30351488 A JP30351488 A JP 30351488A JP H02152660 A JPH02152660 A JP H02152660A
- Authority
- JP
- Japan
- Prior art keywords
- film
- heat
- adhesive
- adhesive strength
- bag
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 11
- 229920003023 plastic Polymers 0.000 title claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims abstract description 33
- 230000001070 adhesive effect Effects 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims abstract description 27
- 239000002985 plastic film Substances 0.000 claims abstract description 23
- 229920006255 plastic film Polymers 0.000 claims abstract description 23
- 239000012790 adhesive layer Substances 0.000 claims abstract description 7
- 239000002313 adhesive film Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 11
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229920002647 polyamide Polymers 0.000 description 5
- 239000004952 Polyamide Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000009820 dry lamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000004709 eyebrow Anatomy 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N butadiene group Chemical class C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Bag Frames (AREA)
- Packages (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、延伸プラスチックフィルムを含む積層体を使
用したプラスチック袋に関し、米や他の穀類等の重量物
を収納するのに適したプラスチック袋に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a plastic bag using a laminate containing a stretched plastic film, and is a plastic bag suitable for storing heavy items such as rice and other grains. Regarding.
〈従来の技術〉
従来この種の袋は、市場に流通した際の意匠性を付与す
るため、高度な印刷が施される。このため、袋の材料に
は、印刷適性のある延伸プラス千Ｚクフィルムと熱接着
性フィルムの積層体が用いられていた。この積層体は、
通常接着剤を介して積層されており、ろの接着強度は、
眉間剥離が起こらないよう印刷面で最低５００〜１００
０ｇ ／ １５ ｗｘ程度とされていた。<Prior Art> Conventionally, this type of bag is subjected to advanced printing in order to give it a distinctive design when distributed on the market. For this reason, the material used for the bag is a laminate of a stretched plus-Z film and a heat-adhesive film, which is suitable for printing. This laminate is
It is usually laminated with an adhesive, and the adhesive strength of the filter is
At least 500-100 on the printed surface to prevent peeling between the eyebrows.
It was said to be about 0g/15wx.
〈発明が解決しようとする課題〉
ところが、上述のように構成した従来のプラスチック袋
に米等の重量物を収納した包装体は、破。<Problems to be Solved by the Invention> However, the conventional packaging body constructed as described above, in which heavy items such as rice are stored in the plastic bag, breaks.
袋しやすいという欠点があった。すなわち、外層となる
延伸プラスチックフィルムは、引き裂きやすいという性
質を有しており、机の角部などの突起に衝突させた場合
や、落下等により強い衝窄が加わった際袋表面に傷等が
あれば、延伸プラスチックフィルムの裂けとともに熱接
着性フィルムも裂けてしまい、内容物がこぼれてしまっ
ていた。The drawback was that it was easy to bag. In other words, the stretched plastic film that serves as the outer layer has the property of being easily torn, and may cause scratches on the bag surface if it collides with a protrusion such as the corner of a desk, or if it is subjected to strong impact due to a fall, etc. If there was, the thermoadhesive film would tear as well as the stretched plastic film, and the contents would spill out.
また、この袋には、積み重ねた際の空気圧による破袋を
防止するため、脱気用の孔やスリットを設けることがし
ばしば行なわれるが、このような孔等を設けた場合にも
、落下等による破袋がよく見られた。In addition, these bags are often provided with holes or slits for deaeration in order to prevent them from breaking due to air pressure when stacked, but even if such holes are provided, Broken bags were often seen.
そこで本発明は、突起に衝突したり、落下等の衝撃が加
わっても、袋が裂けて内容物がこぼれることがない、プ
ラスチック袋を提供するものである。SUMMARY OF THE INVENTION Therefore, the present invention provides a plastic bag that will not tear and the contents will not spill even if the bag collides with a protrusion or is subjected to impact such as falling.
〈課題を解決するための手段〉
すなわち、本発明は、延伸プラスチックフィルム上に、
該延伸プラスチックフィルム周縁のヒートシール部を除
いて印刷層を設け、該印刷層上から接着剤層を設けて熱
接着性フィルムを積層してなる積層体を、他のフィルム
と重ね合わせて周縁をヒートシールしてなる袋であって
、延伸ブラスチンクフィルムと熱接着性フィルムの印刷
層を設けた部分における接着強度が、３００ｇ／１５ｍ
ｎ以下であることを特徴とする、プラスチック袋である
。<Means for solving the problem> That is, the present invention provides a stretched plastic film with
A printed layer is provided on the periphery of the stretched plastic film except for the heat-sealed portion, an adhesive layer is provided on top of the printed layer, and a heat-adhesive film is laminated.The laminate is then laminated with another film to seal the periphery. A heat-sealed bag with an adhesive strength of 300 g/15 m at the part where the printed layer of stretched brass tink film and thermoadhesive film is provided.
This is a plastic bag, characterized in that it is less than or equal to n.
く作用〉
上記した構成からなる本発明のプラスチック袋は、袋を
構成する積層体の延伸プラスチックフィルムと熱接着性
フィルムの接着強度が、印刷層が設けられた部分におい
ては３００ｇ／１５ｍｍ以下とされているので、落下等
により強い衝撃が加わって延伸プラスチックフィルムが
裂けた場合には、該部分の眉間が剥離し、延伸プラスチ
ックフィルムにつられて熱接着性フィルムが裂けるとい
う現象が防がれる。Effects> The plastic bag of the present invention having the above-described structure has an adhesive strength of 300 g/15 mm or less between the stretched plastic film and the thermoadhesive film of the laminate constituting the bag in the portion where the printed layer is provided. Therefore, in the event that the stretched plastic film is torn due to a strong impact due to a fall or the like, the phenomenon in which the part between the eyebrows peels off and the thermoadhesive film is torn by the stretched plastic film is prevented.
〈実施例〉
次に、図面に基づいて本発明を説明する。第１回は本発
明の一実施例を示す断面図、第２図は同実施例の平面図
である。<Example> Next, the present invention will be described based on the drawings. The first part is a sectional view showing an embodiment of the present invention, and the second part is a plan view of the same embodiment.
本発明で用いる延伸プラスチックフィルム（１）は、ポ
リプロピレン、ポリエステル、ポリアミド等の樹脂から
なる一軸または二軸延伸フィルムである。The stretched plastic film (1) used in the present invention is a uniaxially or biaxially stretched film made of a resin such as polypropylene, polyester, or polyamide.
延伸プラスチックフィルム（１）上には、印刷１ （２
）を設ける。印刷層（２）は、周縁のヒートシール部（
５）を除いて設ける必要がある。印刷層（２）は、ニト
ロセルロース系１、あるいはポリアミド系インキが好適
である。インキの塗布量は通常の印刷と同じでよく、例
えばグラビア印刷では版深３５μｍ程度でよい。Printing 1 (2) is printed on the stretched plastic film (1).
) will be established. The printed layer (2) has a heat-sealed portion (
It is necessary to provide this except for 5). For the printing layer (2), nitrocellulose-based ink or polyamide-based ink is suitable. The amount of ink applied may be the same as in normal printing; for example, in gravure printing, the plate depth may be approximately 35 μm.
印刷層（２）上には、接着剤層（３）を介して熱接着性
フィルム（４）を積層する。A thermally adhesive film (4) is laminated on the printed layer (2) via an adhesive layer (3).
熱接着性フィルム（４）は、ポリエチレン、エチレン−
酢酸ビニル共重合体等のヒートシール性樹脂からなるフ
ィルムが用いられ、特に引き裂き強度の強いフィルムが
好適である。また、接着剤層（３）は、ウレタン系、変
性ブタジェン系、アルキルチタ皐−ト系の接着剤を、必
要に応じて接着促進剤等を添加して、コーティングして
設ける。The thermal adhesive film (4) is made of polyethylene, ethylene-
A film made of a heat-sealable resin such as a vinyl acetate copolymer is used, and a film with particularly high tear strength is preferred. Further, the adhesive layer (3) is provided by coating a urethane-based, modified butadiene-based, or alkyl titanium-based adhesive with an adhesion promoter added thereto as required.
本発明においては、延伸プラスチックフィルム（１１と
熱接着性フィルム（４）の接着強度を、３００ｇ／１５
１以下となるように積層する。下限は特に制限はないが
、接着強度が３０ｇ／１５ｍよりも小さいと、積層体（
Ａ） 自体を取扱う際に剥離が生じてしまうため、包
装材料としては用いにくい、また、後述する試験結果か
ら分かるように、接着強度が３００ｇ／ １５ ｍｍを
超えると、本発明の目的が達成されない。In the present invention, the adhesive strength between the stretched plastic film (11) and the thermally adhesive film (4) is 300 g/15
Stack them so that the number is 1 or less. There is no particular lower limit, but if the adhesive strength is less than 30g/15m, the laminate (
A) It is difficult to use as a packaging material because it peels when handled, and as can be seen from the test results described below, the purpose of the present invention cannot be achieved if the adhesive strength exceeds 300 g/15 mm. .
熱接着性フィルム（４）の積層は、通常のドライラミネ
ート法、あるいはエキストルージョンラミネート法によ
り可能である。The thermally adhesive film (4) can be laminated by the usual dry lamination method or extrusion lamination method.
接着強度を所定範囲内とするには、前述の接着剤層（３
）を、従来に比較して極端に薄くコーティングすること
により可能である。すなわち、例えば接着剤中の固形分
量を０．５〜２重量％程度とするとともに、コーティン
グ用板の版深を１０〜２０μｍとすることにより、延伸
プラスチックフィルム（１）（印刷層（２）上）にコー
ティングされる接着剤が絶対的に少なくなる。このよう
にすると、接着剤は、印刷層（２）にその一部が浸透吸
収され、結果として延伸プラスチックフィルム（１）と
熱接着性フィルム（４）の接着強度が、印刷層（２）を
設けた部分では３００ｇ／１５１Ｗ以下になるのである
。一方、印刷層（２）を設けない周縁のヒートシール部
（５）においては、接着強度は１０００ ｇ ／ １５
ｍ以上となり、十分な接着強度を有している。In order to keep the adhesive strength within a predetermined range, the above-mentioned adhesive layer (3
) can be made possible by applying an extremely thin coating compared to conventional methods. That is, for example, by setting the solid content in the adhesive to about 0.5 to 2% by weight and setting the plate depth of the coating plate to 10 to 20 μm, the stretched plastic film (1) (on the printed layer (2) ) is coated with absolutely less adhesive. In this way, a part of the adhesive penetrates and is absorbed into the printed layer (2), and as a result, the adhesive strength between the stretched plastic film (1) and the thermally adhesive film (4) increases. In the provided area, the energy consumption is less than 300g/151W. On the other hand, in the peripheral heat-sealed part (5) where the printed layer (2) is not provided, the adhesive strength is 1000 g / 15
m or more, and has sufficient adhesive strength.
上述のように構成された積層体（Ａ）を、他のフィルム
（Ｂ） と重ね合わせて周縁をヒートシールして袋状
とすることにより、本発明のブラスチンク袋が完成する
。他のフィルム（Ｂ） は、少なくとも内面がヒート
シール可能な材料であれば任意であり、前述した積層体
（八）を用いてよいことはもちろんである。The plastic tink bag of the present invention is completed by overlapping the laminate (A) constructed as described above with another film (B) and heat-sealing the periphery to form a bag shape. The other film (B) may be any material as long as at least the inner surface is heat-sealable, and the above-mentioned laminate (8) may of course be used.
上記した実施例では、接着剤が印刷層（２）に吸収され
ることにより３００ｇ／１５ｍｍ以下の接着強度が実現
されているが、他の方法によって同様の接着強度を得て
もよい。例えば、印刷層（２）に接着強度を調節可能な
成分を添加する方法、印刷層（２）上に同様な成分から
なる層を設ける方法等が例示できる。In the examples described above, adhesive strength of 300 g/15 mm or less is achieved by absorbing the adhesive into the printed layer (2), but similar adhesive strength may be achieved by other methods. Examples include a method of adding a component capable of adjusting adhesive strength to the printed layer (2), a method of providing a layer made of the same component on the printed layer (2), and the like.
次に、接着強度を種々変えて作成した袋を用い、破袋試
験を行なった結果を示す。Next, we will show the results of a bag breakage test using bags made with various adhesive strengths.
延伸プラスチックフィルム（１）として延伸ポリアミド
系インキ（６，６−ナイロン、＃２５）ヲ用い、ポリア
ミド系インキを３５μｍ版深のグラビア版にて延伸ポリ
アミドフィルム上に、周縁を除いて印刷し、印刷層（２
）を形成した０次いで、印刷層（２）上から、ウレタン
系接着剤を全面にコーティングして接着剤Ｎ（３）を形
成し、熱接着性フィルム（４）とじてポリエチレンフィ
ルム（厚さ８０μｍ）をドライラミネート法により積層
し、積層体（Ａ）を作成した。この積層体（Ａ） を
５５０ Ｘ２８０ ａｎの大きさに裁断し、２枚をポリ
エチレンフィルム同士を内面にして重ね合わせ、周囲を
ヒートシールして袋を作成した。袋には、脱気用の孔（
１，０φ）を複数設けた。この袋に米１０ｋｇを収納、
密封し、高さ１．５ｍの位置から水平に地上に落下させ
、破袋のを無を観察した。試験は各１０回行なった。Stretched polyamide ink (6,6-nylon, #25) was used as the stretched plastic film (1), and the polyamide ink was printed on the stretched polyamide film with a gravure plate with a plate depth of 35 μm, excluding the peripheral edges. Layer (2
) was formed on the printing layer (2), the entire surface was coated with a urethane adhesive to form an adhesive N (3), and a heat-adhesive film (4) was formed. ) were laminated by a dry lamination method to create a laminate (A). This laminate (A) was cut into a size of 550 x 280 an, two sheets were stacked on top of each other with the polyethylene films facing inside, and the periphery was heat-sealed to make a bag. The bag has holes for degassing (
1,0φ) were provided. This bag stores 10kg of rice.
The bag was sealed and dropped horizontally to the ground from a height of 1.5 m, and the bag was observed to see if it was broken. Each test was performed 10 times.
なお、接着剤のコーティングは、接着剤固形分比および
コーティング用板の版深を種々変えて行ない、接着強度
の異なるものを複数作成した。それぞれの接着強度（印
刷層上、およびヒートシール部）を併せて示す。The adhesive coating was carried out by varying the adhesive solid content ratio and the coating depth of the coating plate to create a plurality of adhesive coatings with different adhesive strengths. The adhesion strength (on the printed layer and heat-sealed part) of each is also shown.
〈以下本葉金白〉
試験結果
上述の結果から明らかなように、印刷層上における延伸
プラスチックフィルムと熱接着性フィルムの接着強度が
３００ｇ／１５ｍｍ以下のものは、破袋がきわめて少な
く、重量物用のプラス千ツク袋として好適であることが
わかる。<Honyo Kinpaku> Test Results As is clear from the above results, when the adhesive strength between the stretched plastic film and the thermally adhesive film on the printed layer is 300 g/15 mm or less, there is very little bag breakage and it is difficult to handle heavy items. It can be seen that it is suitable as a plus bag for use.
〈発明の効果〉
本発明は以上述べた構成からなっており、突起に衝突し
たり落下等の衝撃が加えられて延伸プラスチックフィル
ムが裂けても、該フィルムと熱接着性フィ・ルムの間で
剥離が生じ、熱接着性フィルムまでが裂け、ることかな
いので、袋全体としては破袋が防がれる。また、使用す
る材料や袋の製造方法は特種なものではなく、従来の袋
に比べて経済的に劣ることがなく、場合によっては、熱
接着性フィルムの薄膜化や、接着剤の使用量削減が可能
であり、経済的なメリットを有するものである。<Effects of the Invention> The present invention has the structure described above, and even if the stretched plastic film is torn due to impact such as colliding with a protrusion or being dropped, there will be no damage between the film and the thermoadhesive film. Peeling does not occur and the thermoadhesive film is not torn, so the bag as a whole is prevented from tearing. In addition, the materials used and the method of manufacturing the bags are not special, and they are not economically inferior to conventional bags. is possible and has economic merit.
第１図は本発明の一実施例を示す断面図、第２図は同実
施例の平面図である。
（１）・・・延伸プラスチックフィルム（２）・・・印
刷層
（３）・・・接着剤層
（４）・・・熱接着性フィルム
（５）・・・ヒートシール部
（八）・・・積層体
（Ｂ） ・・・他のフィルム
特 許 出 願 人
凸版印刷株式会社
代表者 鈴木和夫
第２図FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is a plan view of the same embodiment. (1)...Stretched plastic film (2)...Printing layer (3)...Adhesive layer (4)...Thermoadhesive film (5)...Heat seal portion (8)...・Laminated body (B) ...Other film patent applications Representative Kazuo Suzuki, Toppan Printing Co., Ltd. Figure 2
Claims (1)
ックフィルム周縁のヒートシール部を除いて印刷層を設
け、該印刷層上から接着剤層を設けて熱接着性フィルム
を積層してなる積層体を、他のフィルムと重ね合わせて
周縁をヒートシールしてなる袋であって、延伸プラスチ
ックフィルムと熱接着性フィルムの印刷層を設けた部分
における接着強度が、３００ｇ／１５ｍｍ以下であるこ
とを特徴とする、プラスチック袋。(1) A laminate in which a printed layer is provided on a stretched plastic film except for the heat-sealed portion at the periphery of the stretched plastic film, an adhesive layer is provided on the printed layer, and a thermal adhesive film is laminated, A bag formed by overlapping with another film and heat-sealing the periphery, characterized in that the adhesive strength at the part where the printed layer of stretched plastic film and thermoadhesive film is provided is 300 g/15 mm or less. , plastic bags.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63303514A JP2548782B2 (en) | 1988-11-30 | 1988-11-30 | Plastic bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63303514A JP2548782B2 (en) | 1988-11-30 | 1988-11-30 | Plastic bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02152660A true JPH02152660A (en) | 1990-06-12 |
| JP2548782B2 JP2548782B2 (en) | 1996-10-30 |
Family
ID=17921898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63303514A Expired - Lifetime JP2548782B2 (en) | 1988-11-30 | 1988-11-30 | Plastic bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548782B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0639737U (en) * | 1991-12-27 | 1994-05-27 | 堀富商工株式会社 | Packaging bag |
| KR100406799B1 (en) * | 2001-09-29 | 2003-11-21 | 흥원실업 주식회사 | Water proof bag |
| CN113830425A (en) * | 2021-06-29 | 2021-12-24 | 安姆科(惠州)新材料科技有限公司 | Small-capacity liquid self-supporting bag with nozzle and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112005001258B4 (en) | 2004-06-03 | 2012-09-27 | Panasonic Corporation | Vacuum heat insulation material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921937U (en) * | 1982-07-31 | 1984-02-10 | 大日本印刷株式会社 | Sealed bag with opening |
-
1988
- 1988-11-30 JP JP63303514A patent/JP2548782B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921937U (en) * | 1982-07-31 | 1984-02-10 | 大日本印刷株式会社 | Sealed bag with opening |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0639737U (en) * | 1991-12-27 | 1994-05-27 | 堀富商工株式会社 | Packaging bag |
| KR100406799B1 (en) * | 2001-09-29 | 2003-11-21 | 흥원실업 주식회사 | Water proof bag |
| CN113830425A (en) * | 2021-06-29 | 2021-12-24 | 安姆科(惠州)新材料科技有限公司 | Small-capacity liquid self-supporting bag with nozzle and preparation method thereof |
| CN113830425B (en) * | 2021-06-29 | 2023-08-04 | 安姆科(惠州)新材料科技有限公司 | Small-capacity spouted liquid self-standing bag and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2548782B2 (en) | 1996-10-30 |
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