JPH0532443Y2 - - Google Patents
Info
- Publication number
- JPH0532443Y2 JPH0532443Y2 JP8160487U JP8160487U JPH0532443Y2 JP H0532443 Y2 JPH0532443 Y2 JP H0532443Y2 JP 8160487 U JP8160487 U JP 8160487U JP 8160487 U JP8160487 U JP 8160487U JP H0532443 Y2 JPH0532443 Y2 JP H0532443Y2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- outer cylinder
- pasted
- kraft paper
- cut end
- 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
- 239000011888 foil Substances 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 239000002655 kraft paper Substances 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Bag Frames (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本案はナイロン樹脂原料のような粉末原料包装
用防湿袋に関するものである。[Detailed description of the invention] "Industrial Application Field" This invention relates to a moisture-proof bag for packaging powder raw materials such as nylon resin raw materials.
「従来の技術」
従来の防湿袋では内外２層袋よりなり、内袋の
内面にアルミニウム箔を貼着し、さらに同箔の内
面に線状低密度ポリエチレンを貼着し同ポリエチ
レンの対接面を開口部において熱着又は超音波シ
ールして防湿性を向上させた（特公昭57−17790
号、特開昭62−78059号）。``Conventional technology'' Conventional moisture-proof bags consist of two layers: an inner bag and an inner bag, and an aluminum foil is pasted on the inside surface of the inner bag, and a linear low-density polyethylene is pasted on the inside surface of the foil. The moisture resistance was improved by heat bonding or ultrasonic sealing at the opening (Special Publication No. 17790
No., Japanese Patent Publication No. 62-78059).
「考案が解決しようとする問題点」
しかしアルミニウム箔は靱性に欠け内容物の重
量による内袋の緊張によつて破袋するという欠陥
があつた。本案は内袋の防湿性に富みかつアルミ
ニウム箔の破袋のおそれがなくかつ外袋の強度を
強化することによつて内袋の緊張を緩和すること
のできる高級粉末原料包装用防湿袋を得ようとす
るものである。``Problems that the invention seeks to solve'' However, aluminum foil had the drawback of lacking toughness and causing the bag to break due to tension in the inner bag due to the weight of the contents. The present invention provides a high-quality moisture-proof bag for packaging powder raw materials, which has a highly moisture-proof inner bag, eliminates the risk of aluminum foil breaking, and can relieve tension in the inner bag by strengthening the outer bag. This is what we are trying to do.
「問題点を解決するための手段」
本案はクラフト紙の内面にプラスチツクスクロ
スシートを貼着してなる外筒と、クラフト紙の内
面にアルミニウム箔を貼着し、同箔の内面に二軸
延伸ポリプロピレンシートを貼着し、さらにその
内面に線状低密度ポリエチレンシートを貼着して
なる内筒とよりなり、外筒の一端の高低階段状切
断端によつて開口部を形成し、同開口部の中程に
内筒の直線切断端を配置し、外筒の低切断端に沿
つて上記開口部を外筒の表面に折返貼着するよう
形成した粉末原料包装用防湿袋によつて構成され
る。``Means to solve the problem'' This project consists of an outer cylinder made of a plastic cloth sheet pasted on the inside of kraft paper, an aluminum foil pasted on the inside of the kraft paper, and a biaxial It consists of an inner cylinder made by pasting a stretched polypropylene sheet and a linear low-density polyethylene sheet on the inner surface of the inner cylinder, and an opening is formed by a stepped cut end at one end of the outer cylinder. By using a moisture-proof bag for powder raw material packaging, the straight cut end of the inner cylinder is placed in the middle of the opening, and the opening is folded back and pasted onto the surface of the outer cylinder along the low cut end of the outer cylinder. configured.
「作用」
従つて内外筒３，７の一端開口部９を開いてナ
イロン樹脂原料等の粉末原料を投入した後同開口
部９の対向内面を接し、内筒７の直線切断端１０
に沿つて外側から超音波シール加工１６を施すと
内筒７の対接する線状低密度ポリエチレンシート
６，６が溶着して内筒７を密封することができ
る。その後同内筒７の開口部露出面及び外筒３の
高切断端８′の内部（開口部）に接着剤を塗布し
外筒３の低切断端８に沿つて開口部９を外筒３の
表面に折返して接着密封することができる。上記
粉末密封後同袋を取扱及び搬送する際に密封粉末
の重量によつて掛る緊張力は内外筒３，７に分散
し、さらに外筒３ではクロスシート２とクラフト
紙１とに分散する。又内筒７の受持つ緊張力は主
として引張りに強い二軸延伸ポリプロピレンシー
ト５及びクラフト紙１′が分散して受持つことに
なり、アルミニウム箔４に掛る緊張力は弱化す
る。"Function" Therefore, after opening the opening 9 at one end of the inner and outer cylinders 3 and 7 and introducing a powder raw material such as a nylon resin raw material, the opposing inner surfaces of the opening 9 are brought into contact with each other, and the straight cut end 10 of the inner cylinder 7 is opened.
When the ultrasonic sealing process 16 is applied from the outside along the inner cylinder 7, the opposing linear low-density polyethylene sheets 6, 6 of the inner cylinder 7 can be welded and the inner cylinder 7 can be sealed. After that, adhesive is applied to the exposed surface of the opening of the inner cylinder 7 and the inside (opening) of the high cut end 8' of the outer cylinder 3, and the opening 9 is attached to the outer cylinder 3 along the low cut end 8 of the outer cylinder 3. It can be folded back onto the surface and sealed with adhesive. When handling and transporting the bag after sealing the powder, the tension applied due to the weight of the sealed powder is distributed to the inner and outer tubes 3 and 7, and further distributed to the cloth sheet 2 and the kraft paper 1 in the outer tube 3. Further, the tension force of the inner cylinder 7 is mainly carried out by the biaxially oriented polypropylene sheet 5 and the kraft paper 1' which are strong against tension, and the tension force applied to the aluminum foil 4 is weakened.
「実施例」
坪量75ｇのクラフト紙１の内面にポリエチレン
（15μ）１１によつてプラスチツクス延伸テープ
を経緯に平織（４条×３条／インチ）に織成した
クロスシート２を接着して外筒３を形成する。又
坪量50ｇのクラフト紙１′の内面にポリエチレン
（15μ）１２をアンカー（接着剤）としてアルミ
ニウム箔４（9μ）を貼着し、同箔４の内面にポリ
エチレン（15μ）１３をアンカーとして二軸延伸
ポリプロピレンシート５を接着し、さらにその内
面にポリエチレン（15μ）１４をアンカーとして
線状（直鎖状）低密度ポリエチレンシート６を貼
着して内筒７を形成し一方の開口端に底貼部１５
を形成する。この底貼部１５は後記の一端開口部
９の密封部と同一形状である。このようにした底
貼部の一端開口部９では外筒３の一端表面側を低
く背面側を高く階段状に切断８，８′して開口部
９を形成し、同開口部９の中程に内筒７の直線切
断端１０を配置し、外筒３の上記表面側の低切断
端８と平行な折返線ａに沿つて上記開口部９を外
筒３の表面に折返し接着剤で同表面に貼着して密
封するものである。上記折返線ａに沿つて開口部
９を折返す前に第５図に示すように上記折返線ａ
と平行方向の仮想線に沿つて超音波シール加工部
１６を施し、内筒７の相対接する線状低密度ポリ
エチレンシート６，６を溶着密封させるものであ
る。尚図中１７で示すものは内外筒３，７の相互
接着部、第３図中１８は内筒７の背貼部における
接着部である。"Example" A cloth sheet 2 woven in a plain weave (4 strips x 3 strips/inch) using polyethylene (15μ) 11 with a plastic stretched tape in the weft and warp is adhered to the inner surface of a kraft paper 1 with a basis weight of 75 g, and then A cylinder 3 is formed. Also, aluminum foil 4 (9μ) was pasted on the inner surface of kraft paper 1' with a basis weight of 50 g using polyethylene (15μ) 12 as an anchor (adhesive), and aluminum foil 4 (9μ) was pasted on the inner surface of the same foil 4 with polyethylene (15μ) 13 as an anchor. An axially stretched polypropylene sheet 5 is adhered, and a linear (linear) low-density polyethylene sheet 6 is adhered to its inner surface using polyethylene (15μ) 14 as an anchor to form an inner cylinder 7, and a bottom is attached to one open end. Paste section 15
form. This bottom sticking part 15 has the same shape as the sealing part of the one end opening 9 described later. In the opening 9 at one end of the bottom sticking part, the opening 9 is formed by cutting the one end surface side of the outer cylinder 3 into a stepped shape 8, 8' with a lower surface side and a higher rear side. Place the straight cut end 10 of the inner cylinder 7 on the surface of the outer cylinder 3, and fold the opening 9 onto the surface of the outer cylinder 3 along the fold line a parallel to the low cut end 8 on the surface side of the outer cylinder 3 using adhesive. It is attached to a surface to seal it. Before folding back the opening 9 along the folding line a, as shown in FIG.
An ultrasonic seal processing section 16 is applied along an imaginary line parallel to the inner cylinder 7, and the linear low-density polyethylene sheets 6, 6 that are in mutual contact with each other in the inner cylinder 7 are welded and sealed. Note that 17 in the figure is a bonded portion between the inner and outer cylinders 3 and 7, and 18 in FIG. 3 is a bonded portion at the back sticking portion of the inner tube 7.
「効果」
本案は上述のように構成したので高級粉末原料
を収容密封し充分防湿性を発揮し得るばかりでな
く取扱、搬送中に収容物の重量による緊張が袋に
掛つても緊張力が内外筒３，７に分散し、さらに
外筒３では主としてプラスチツクスクロスシート
２により、内筒７では主として二軸延伸ポリプロ
ピレンシート５によつて強力に上記緊張力が支持
され内外筒３，７のクラフト紙１，１′にも分散
するため上記アルミニウム箔４に掛る緊張力が小
さく、同箔４に緊張による損傷を与えることがな
く高級粉末原料の密封に適した防湿袋が得られる
ものである。``Effects'' Since this project is constructed as described above, it not only can contain and seal high-grade powder raw materials and exhibit sufficient moisture-proofing properties, but also prevent tension from inside and outside even if tension due to the weight of the contents is applied to the bag during handling or transportation. The tension force is dispersed in the cylinders 3 and 7, and is strongly supported mainly by the plastic cloth sheet 2 in the outer cylinder 3 and mainly by the biaxially stretched polypropylene sheet 5 in the inner cylinder 7, so that the tension force in the inner and outer cylinders 3 and 7 is strongly supported. Since it is also dispersed in the papers 1 and 1', the tension applied to the aluminum foil 4 is small, and the foil 4 is not damaged by tension, making it possible to obtain a moisture-proof bag suitable for sealing high-grade powder raw materials.
第１図は本案の粉末原料包装用防湿袋を示す斜
視図、第２図は第１図Ａ−Ａ線による拡大縦断面
図、第３図は第１図Ｂ−Ｂ線による拡大横断面
図、第４図は第１図の縦断面図、第５図は開口部
の正面図、第６図は密封状態の正面図、第７図は
第１図の他の実施例の斜視図である。
１，１′……クラフト紙、２……プラスチツク
スクロスシート、３……外筒、４……アルミニウ
ム箔、５……二軸延伸ポリプロピレンシート、６
……線状低密度ポリエチレンシート、７……内
筒、８，８′……高低階段状切断端、９……開口
部、１０……直線切断端。
Fig. 1 is a perspective view showing the moisture-proof bag for packaging powder raw materials of the present invention, Fig. 2 is an enlarged vertical cross-sectional view taken along line A-A in Fig. 1, and Fig. 3 is an enlarged cross-sectional view taken along line B-B in Fig. 1. , FIG. 4 is a longitudinal sectional view of FIG. 1, FIG. 5 is a front view of the opening, FIG. 6 is a front view of the sealed state, and FIG. 7 is a perspective view of another embodiment of FIG. 1. . 1, 1'...Kraft paper, 2...Plastic cloth sheet, 3...Outer tube, 4...Aluminum foil, 5...Biaxially stretched polypropylene sheet, 6
... Linear low-density polyethylene sheet, 7 ... Inner cylinder, 8, 8' ... High and low stepped cut ends, 9 ... Openings, 10 ... Straight cut ends.
Claims (1)
トを貼着してなる外筒と、クラフト紙の内面にア
ルミニウム箔を貼着し、同箔の内面に二軸延伸ポ
リプロピレンシートを貼着し、さらにその内面に
線状低密度ポリエチレンシートを貼着してなる内
筒とよりなり、外筒の一端の高低階段状切断端に
よつて開口部を形成し、同開口部の中程に内筒の
直線切断端を配置し、外筒の低切断端に沿つて上
記開口部を外筒の表面に折返貼着するよう形成し
た粉末原料包装用防湿袋。 An outer cylinder is made by pasting a plastic cloth sheet on the inside of kraft paper, an aluminum foil is pasted on the inside of the kraft paper, a biaxially stretched polypropylene sheet is pasted on the inside of the foil, and then a biaxially stretched polypropylene sheet is pasted on the inside of the kraft paper. It consists of an inner cylinder made by pasting a linear low-density polyethylene sheet, and an opening is formed by a stepped cut end at one end of the outer cylinder, and a straight cut end of the inner cylinder is formed in the middle of the opening. A moisture-proof bag for packaging powder raw materials, wherein the opening is folded back and adhered to the surface of the outer cylinder along the low cut end of the outer cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8160487U JPH0532443Y2 (en) | 1987-05-27 | 1987-05-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8160487U JPH0532443Y2 (en) | 1987-05-27 | 1987-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63190051U JPS63190051U (en) | 1988-12-07 |
| JPH0532443Y2 true JPH0532443Y2 (en) | 1993-08-19 |
Family
ID=30933496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8160487U Expired - Lifetime JPH0532443Y2 (en) | 1987-05-27 | 1987-05-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532443Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008307774A (en) * | 2007-06-14 | 2008-12-25 | Mitsuwa Seisakusho:Kk | Paper bag, and method and apparatus for sealing paper bag |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2811421B2 (en) * | 1994-04-02 | 1998-10-15 | 日本石油化学株式会社 | Breathable transparent bag |
-
1987
- 1987-05-27 JP JP8160487U patent/JPH0532443Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008307774A (en) * | 2007-06-14 | 2008-12-25 | Mitsuwa Seisakusho:Kk | Paper bag, and method and apparatus for sealing paper bag |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63190051U (en) | 1988-12-07 |
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