JPH0223525Y2 - - Google Patents
Info
- Publication number
- JPH0223525Y2 JPH0223525Y2 JP1982128443U JP12844382U JPH0223525Y2 JP H0223525 Y2 JPH0223525 Y2 JP H0223525Y2 JP 1982128443 U JP1982128443 U JP 1982128443U JP 12844382 U JP12844382 U JP 12844382U JP H0223525 Y2 JPH0223525 Y2 JP H0223525Y2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- section
- heating
- fused portion
- 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.)
- Expired
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 14
- 239000000057 synthetic resin Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 239000000203 mixture 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
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Package Closures (AREA)
Description
本考案は合成樹脂製袋の口部融着装置に関する
もので、強靭なシール強度をもつ袋を得ることを
目的とする。
従来から使用されている合成樹脂製袋の口部融
着装置は充分なシール強度が得られない欠点があ
つた。本考案はその改良を目的としている。第１
図は本考案の側面図であり、第２図は従来技術の
代表側面図である。
本口部融着装置において、合成樹脂製袋を挟着
移動させる対称型の無端帯５があり、合成樹脂製
袋の口部を融着できる二ケ所の第一加熱部１、第
二加熱部２を有する。
第一加熱部１は合成樹脂材料の溶融点より50〜
200℃高い温度で融着を行ない、第二加熱部２は
融着された合成樹脂製袋の口部を合成樹脂材料の
溶融点より０〜20℃高い温度で熱処理を行ない、
残留応力を取り去る。これら２個の加熱部の中間
に設けた一対の圧着ロール３は無端帯５を任意の
圧力で圧着する。空冷部４は、合成樹脂製袋の融
着された口部を拘束せず、冷却により自由に収縮
できるように空冷を行ない、強靭なシール強度を
もつ合成樹脂製袋を得る。
一方、従来より用いられている口部融着装置は
第２図の従来技術の側面図に示されている。第２
図では本考案と同様に加熱融着部で合成樹脂製袋
を融着させるが、２′の水冷、または空冷部にお
いては、融着された口部を直ちに冷却または空冷
せしめる。従来法では融着された口部は高温から
急激に常温に冷却させるので大きい温度差によつ
て、残留応力を生じ、シール強度が劣るという欠
点を伴う。
また、本考案に使用できる合成樹脂として好ま
しい材料としては、低密度ポリエチレン、高密度
ポリエチレン、線状低密度ポリエチレン、エチレ
ンとα−オレフインとの共重合体、あるいはこれ
らの相互の混合物またはこれらと無機充填剤との
混合物などをあげることができる。
次に実施例で本考案と従来技術の差を比較す
る。
実施例
材料として低密度ポリエチレン（宇部ポリエチ
レンHFO19）を用いて0.2mm厚さのフイルムを作
り、さきに説明した本考案と従来技術を用いた場
合のシール条件とその条件下で得られるシール強
度を比較した。
The present invention relates to a mouth fusing device for synthetic resin bags, and its purpose is to obtain bags with strong sealing strength. Conventionally used mouth fusing devices for synthetic resin bags have the drawback of not being able to provide sufficient sealing strength. The present invention aims to improve this. 1st
The figure is a side view of the present invention, and FIG. 2 is a representative side view of the prior art. The main mouth fusing device has a symmetrical endless band 5 that clamps and moves the synthetic resin bag, and has two heating parts, a first heating part 1 and a second heating part, which can fuse the mouth part of the synthetic resin bag. It has 2. The first heating section 1 is 50 to
Fusion is carried out at a temperature 200°C higher, and the second heating section 2 heat-treats the opening of the fused synthetic resin bag at a temperature 0 to 20°C higher than the melting point of the synthetic resin material,
Removes residual stress. A pair of press rolls 3 provided between these two heating parts press the endless band 5 at an arbitrary pressure. The air cooling section 4 performs air cooling so that the fused mouth part of the synthetic resin bag can be freely contracted by cooling without restraining it, thereby obtaining a synthetic resin bag with strong sealing strength. On the other hand, a conventionally used mouth fusing device is shown in a side view of the prior art in FIG. Second
In the figure, the synthetic resin bag is fused in the heat fusion part as in the present invention, but in the water cooling or air cooling part 2', the fused mouth part is immediately cooled or air cooled. In the conventional method, the fused mouth portion is rapidly cooled from a high temperature to room temperature, resulting in residual stress due to a large temperature difference, resulting in poor sealing strength. Preferred materials for the synthetic resin that can be used in the present invention include low-density polyethylene, high-density polyethylene, linear low-density polyethylene, copolymers of ethylene and α-olefin, or mixtures of these and inorganic materials. Examples include mixtures with fillers. Next, the differences between the present invention and the prior art will be compared in Examples. Example A film with a thickness of 0.2 mm was made using low-density polyethylene (Ube polyethylene HFO19) as the material, and the sealing conditions and sealing strength obtained under those conditions were evaluated using the present invention and the conventional technology described above. compared.
【表】【table】
第１図は本考案の装置に係る側面図である。第
２図は従来技術の側面図である。
１……第一加熱部、２……第二加熱部、３……
圧着ロール、４……空冷部、５……無端帯、６…
…駆動プーリー、７……従動プーリー、８……テ
ンシヨンプーリー、２′……水冷または空冷部。
FIG. 1 is a side view of the device of the present invention. FIG. 2 is a side view of the prior art. 1...First heating section, 2...Second heating section, 3...
Crimping roll, 4...Air cooling section, 5...Endless band, 6...
...Drive pulley, 7...Driver pulley, 8...Tension pulley, 2'...Water-cooled or air-cooled section.
Claims (1)
と該合成樹脂製袋を融着るさせる二ケ所の加熱部
において第一加熱部１は該合成樹脂の溶融点より
50〜200℃高く、第二加熱部２は溶融点より０〜
20℃高く設定し、それぞれの加熱部１，２の中間
に設けた一対の圧着ロール３と無端帯５の出口に
設けた該合成樹脂製袋融着部を冷却する空冷部４
よりなり、該空冷部４は融着部を冷却により自由
に収縮させ、融着部とは接触することがないよう
に冷却して、強靭なシール強度をもつ袋を得るこ
とを特徴とする合成樹脂製袋の口部融着装置。 Symmetrical endless band 5 for pinching and moving synthetic resin bags
In the two heating sections for fusing the synthetic resin bag, the first heating section 1 is heated above the melting point of the synthetic resin.
50~200℃ higher than the melting point of the second heating section 2
An air cooling section 4 is set at a temperature higher than 20° C. and cools the pair of pressure rolls 3 provided between the respective heating sections 1 and 2 and the synthetic resin bag fusion section provided at the outlet of the endless band 5.
The air cooling section 4 is characterized by allowing the fused portion to contract freely by cooling and cooling the fused portion without contacting the fused portion to obtain a bag with strong sealing strength. Mouth fusing device for plastic bags.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12844382U JPS6075206U (en) | 1982-08-25 | 1982-08-25 | Mouth fusing device for synthetic resin bags |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12844382U JPS6075206U (en) | 1982-08-25 | 1982-08-25 | Mouth fusing device for synthetic resin bags |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6075206U JPS6075206U (en) | 1985-05-27 |
| JPH0223525Y2 true JPH0223525Y2 (en) | 1990-06-27 |
Family
ID=30291377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12844382U Granted JPS6075206U (en) | 1982-08-25 | 1982-08-25 | Mouth fusing device for synthetic resin bags |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6075206U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017013806A (en) * | 2015-06-29 | 2017-01-19 | 富士インパルス株式会社 | Belt sealer |
-
1982
- 1982-08-25 JP JP12844382U patent/JPS6075206U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017013806A (en) * | 2015-06-29 | 2017-01-19 | 富士インパルス株式会社 | Belt sealer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6075206U (en) | 1985-05-27 |
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