JPS6127720Y2 - - Google Patents
Info
- Publication number
- JPS6127720Y2 JPS6127720Y2 JP1979178666U JP17866679U JPS6127720Y2 JP S6127720 Y2 JPS6127720 Y2 JP S6127720Y2 JP 1979178666 U JP1979178666 U JP 1979178666U JP 17866679 U JP17866679 U JP 17866679U JP S6127720 Y2 JPS6127720 Y2 JP S6127720Y2
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- resin film
- adhesive
- heater
- pressing surface
- 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
- 229920005992 thermoplastic resin Polymers 0.000 claims description 22
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案は熱可塑性樹脂フイルム用接着具に関す
る。
従来、熱可塑性樹脂フイルム用の製袋機や熱可
塑性樹脂フイルム袋のシーラー（封縅機）等の熱
可塑性樹脂フイルム用接着具は、ヒーターバーが
該フイルムを押圧するときにその押圧面で該フイ
ルムが溶融して該押圧面の両側に団塊列状または
土手状にはみだす小量の溶融樹脂を受容するため
の空間を設けるため、第１図に示したように該押
圧面に隣接する両側に隅肉取り斜面が形成されて
いる。
しかし、このような型式のヒーターバーを有す
る接着具を用いて製造した袋は接着部分の袋本体
側の団塊列状または土手状にはみ出した溶融樹脂
に起因して該部分が強度的に弱くなりそこを起点
として破綻しやすいことが経験されている。
本考案は上記のような欠点を解消し、かつ作業
性を向上せしめた熱可塑性樹脂フイルム用接着具
の提供を目的としている。
本考案は、熱可塑性樹脂フイルム押圧面と隣接
させて隅肉取り斜面を形成させたヒーターバーの
２個を１組とし、該ヒーターバーを互に隅肉取り
斜面が対向するように間隔を設けて配置するとと
もに、該ヒーターバー間において熱可塑性樹脂フ
イルムを切断しうるカツターを付設し、かつ前記
ヒーターバーにおける熱可塑性樹脂フイルム押圧
面の廷長面と隅肉取り斜面により形成される角度
を２〜45゜としたことを特徴とする熱可塑性樹脂
フイルム用接着具を提供するものである。
本考案を図面に基いて説明すると、接着具はヒ
ーターバー１、台板２およびカツター３より主と
して構成され、ヒーターバーは２個を１組として
いる。ヒーターバー１の好ましい形状は、図示し
たように断面形状が熱可塑性樹脂フイルム押圧面
４と隣接させて該押圧面と特定の角度をなす隅肉
取り斜面５を形成させてなるものである。
１組のヒーターバー１を互にその隅肉取り斜面
５が対向するように所定の間隔を設けて配置し、
かつ２個の該ヒーターバー間において重ね合わさ
れた熱可塑性樹脂フイルム６のヒートシールされ
た部分間を切断して袋の底部とするように、たと
えば走行カツターの如きカツター３を付設する。
ヒーターバー１の押圧面４の巾は１〜20mm、
好ましくは１〜10mmの範囲とすればよい。が１
mm未満では熱可塑性樹脂フイルムの６のシール強
さが低下し、また20mmを超えると該フイルムにシ
ワ、接着部に過度の波打ち等が生じて外観が劣悪
化する。一方、熱可塑性樹脂フイルム押圧面４の
廷長面と隅肉取り斜面５により形成される角度θ
については２〜45゜、好ましくは２〜20゜とすれ
ばよい。θが２゜未満ではヒーターバーによる接
着の際にフイルムが切れやすく、同様に45゜を超
えた場合も接着の際にフイルムが切れやすくな
る。
本考案によれば、従来の形状のヒーターバーを
有する接着具では得られなかつたフイルムの接着
強さが得られ、そのため同種材料のフイルムを従
来技術では不可能とされていた重包装分野へ適用
することが可能となつた。すなわち本考案の接着
具を用いて製作された熱可塑性樹脂袋は特に５〜
30Kg容量の重袋分野に有効に利用することができ
る。
一方、製袋上の立場から従来技術と比較する
と、製品の良品率が向上し、しかも図示したよう
に同時に２個のヒーターバーを用いて製袋するこ
とができるので作業性が良好である。この場合、
２個のヒーターバーは互に隅肉取り斜面が小間隔
で対向するように配置してあるため、樹脂フイル
ムの接着作業が終了した後、平行するヒートシー
ルされた部分の間をカツターで切断すれば、底部
−底部態様で分離し、得られる２個の袋はいずれ
も団塊列状もしくは土手状にはみ出した溶融樹脂
が袋の底端部側には存在するが、種々の機械力の
かかりやすい本体側には全く存在しないこととな
る。そのため、上記したように十分な接着強さを
もつて樹脂フイルムの接着を行なうことができる
のである。なお、いずれか一方のヒーターバーの
みを使用して製袋する際には、はみ出す溶融樹脂
が袋の底端部側となるように熱可塑性樹脂フイル
ムを台板上に載置すべきであることは容易に理解
されよう。
次に本考案の接着具を使用して製作した袋と従
来の接着具を用いて製作した袋についてシール強
さ（単位：Kg・cm、測定法：ASTMD−1822法に
よる）を比較した結果を示す。
【表】[Detailed Description of the Invention] The present invention relates to an adhesive for thermoplastic resin film. Conventionally, adhesive tools for thermoplastic resin films, such as bag making machines for thermoplastic resin films and sealers (sealing machines) for thermoplastic resin film bags, have been used to apply pressure on the pressing surface of a heater bar when it presses the film. In order to provide a space for receiving a small amount of molten resin that melts the film and protrudes in a nodule row or bank shape on both sides of the pressing surface, a space is provided on both sides adjacent to the pressing surface as shown in FIG. A fillet slope is formed. However, in bags manufactured using an adhesive tool with this type of heater bar, the strength of the adhesive part weakens due to molten resin protruding into nodules or banks on the bag body side of the adhesive part. It has been experienced that bankruptcy tends to occur from this point. The object of the present invention is to provide an adhesive for thermoplastic resin film that eliminates the above-mentioned drawbacks and improves workability. The present invention consists of a set of two heater bars with filleted slopes formed adjacent to the thermoplastic resin film pressing surface, and the heater bars are spaced apart so that the filleted slopes face each other. At the same time, a cutter capable of cutting the thermoplastic resin film is attached between the heater bars, and the angle formed by the long surface of the thermoplastic resin film pressing surface of the heater bar and the fillet cutting slope is set to 2. The present invention provides an adhesive for thermoplastic resin film, characterized in that the angle is 45°. The present invention will be explained based on the drawings. The adhesive tool is mainly composed of a heater bar 1, a base plate 2, and a cutter 3, and two heater bars form a set. A preferred shape of the heater bar 1 is such that a filleted slope 5 whose cross-sectional shape is adjacent to a thermoplastic resin film pressing surface 4 and forms a specific angle with the pressing surface 4 is formed as shown in the figure. A pair of heater bars 1 are arranged at a predetermined interval so that their filleted slopes 5 face each other,
A cutter 3, such as a traveling cutter, is attached to cut the heat-sealed portion of the thermoplastic resin film 6 overlapped between the two heater bars to form the bottom of the bag. The width of the pressing surface 4 of the heater bar 1 is 1 to 20 mm,
Preferably, the range is 1 to 10 mm. is 1
If it is less than 2 mm, the sealing strength of the thermoplastic resin film (6) decreases, and if it exceeds 20 mm, wrinkles will appear in the film, excessive waving will occur in the bonded area, and the appearance will deteriorate. On the other hand, the angle θ formed by the long surface of the thermoplastic resin film pressing surface 4 and the filleting slope 5
The angle may be 2 to 45 degrees, preferably 2 to 20 degrees. If θ is less than 2 degrees, the film is likely to break when bonding with a heater bar, and similarly, if θ exceeds 45 degrees, the film is likely to break during bonding. According to the present invention, it is possible to obtain film adhesion strength that could not be obtained with an adhesive tool having a conventionally shaped heater bar.Therefore, films made of the same material can be applied to heavy packaging fields that were considered impossible with conventional technology. It became possible to do so. In other words, the thermoplastic resin bag manufactured using the adhesive of the present invention is particularly
It can be effectively used in the field of heavy bags with a capacity of 30Kg. On the other hand, when compared with the prior art from the standpoint of bag making, the yield rate of products is improved and, as shown in the figure, bags can be made simultaneously using two heater bars, resulting in good workability. in this case,
The two heater bars are arranged so that their filleted slopes face each other with a small distance between them, so after the resin film has been bonded, it is necessary to use a cutter to cut between the parallel heat-sealed parts. For example, the two bags obtained by separation in a bottom-to-bottom manner both have molten resin protruding in the form of nodule rows or banks at the bottom end of the bag, but are susceptible to various mechanical forces. It does not exist on the main body side at all. Therefore, as described above, resin films can be bonded with sufficient adhesive strength. When making bags using only one heater bar, the thermoplastic resin film should be placed on the base plate so that the molten resin that protrudes is on the bottom edge of the bag. will be easily understood. Next, we compared the seal strength (unit: Kg cm, measurement method: ASTMD-1822 method) between bags manufactured using the adhesive of this invention and bags manufactured using conventional adhesive. show. 【table】
第１図は従来の接着具の断面図、第２図は本考
案の接着具の断面図、第３図は本考案に用いるヒ
ーターバーの断面図である。
１……ヒーターバー、２……台板、３……カツ
ター、４……熱可塑性樹脂フイルム押圧面、５…
…隅肉取り斜面、６……熱可塑性樹脂フイルム。
FIG. 1 is a cross-sectional view of a conventional adhesive tool, FIG. 2 is a cross-sectional view of the adhesive tool of the present invention, and FIG. 3 is a cross-sectional view of a heater bar used in the present invention. 1... Heater bar, 2... Base plate, 3... Cutter, 4... Thermoplastic resin film pressing surface, 5...
...Fillet removal slope, 6...Thermoplastic resin film.
Claims (1)
肉取り斜面を形成させたヒーターバーの２個を
１組とし、該ヒーターバーを互に隅肉取り斜面
が対向するように間隔を設けて配置するととも
に、該ヒーターバー間において熱可塑性樹脂フ
イルムを切断しうるカツターを付設し、かつ前
記ヒーターバーにおける熱可塑性樹脂フイルム
押圧面の廷長面を隅肉取り斜面により形成され
る角度を２〜45゜としたことを特徴とする熱可
塑性樹脂フイルム用接着具。 ２ 熱可塑性樹脂フイルム押圧面の巾を１〜20mm
としたヒーターバーを有する実用新案登録請求
の範囲第１項に記載の接着具。[Claims for Utility Model Registration] 1. A set of two heater bars each having a filleted slope formed adjacent to a thermoplastic resin film pressing surface, the heater bars having filleted slopes facing each other. At the same time, a cutter capable of cutting the thermoplastic resin film is attached between the heater bars, and the long surface of the thermoplastic resin film pressing surface of the heater bar is formed with a filleted slope. An adhesive for thermoplastic resin film, characterized in that the angle at which the adhesive is applied is 2 to 45 degrees. 2 The width of the thermoplastic resin film pressing surface is 1 to 20 mm.
The adhesive tool according to claim 1 of the utility model registration claim, which has a heater bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979178666U JPS6127720Y2 (en) | 1979-12-25 | 1979-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979178666U JPS6127720Y2 (en) | 1979-12-25 | 1979-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5695813U JPS5695813U (en) | 1981-07-29 |
| JPS6127720Y2 true JPS6127720Y2 (en) | 1986-08-18 |
Family
ID=29689190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979178666U Expired JPS6127720Y2 (en) | 1979-12-25 | 1979-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6127720Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742666Y2 (en) * | 1977-12-07 | 1982-09-20 | ||
| JPS5852108Y2 (en) * | 1978-01-23 | 1983-11-28 | 尾関鉄工株式会社 | Welding stand drive device in bag making machine |
-
1979
- 1979-12-25 JP JP1979178666U patent/JPS6127720Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5695813U (en) | 1981-07-29 |
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