JPS61262118A - Bag making method - Google Patents
Bag making methodInfo
- Publication number
- JPS61262118A JPS61262118A JP60104016A JP10401685A JPS61262118A JP S61262118 A JPS61262118 A JP S61262118A JP 60104016 A JP60104016 A JP 60104016A JP 10401685 A JP10401685 A JP 10401685A JP S61262118 A JPS61262118 A JP S61262118A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- spout
- sealing
- film
- thermoplastic resin
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5861—Spouts
- B65D75/5872—Non-integral spouts
- B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package walls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Making Paper Articles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は熱可塑性樹脂フィルム袋の製袋方法に係り、特
に注出入口とフィルムとのヒートシール強度の高い注出
入口付熱可塑性樹脂フィルム袋の製袋方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for making thermoplastic resin film bags, and particularly to a thermoplastic resin film bag with a spout having a high heat-sealing strength between the spout and the film. Concerning bag making method.
（従来技術）
注出入口付熱可塑性樹脂フィルム袋の製袋方法は従来、
異形熱板ヒートシーラーまたはインパルスヒートシーラ
ーを用いて注出入口とフィルムとを同時にヒートシール
するか、あるいは注出入口を予め加熱して同様のヒート
シールを行なう方法が採られている。(Prior art) The bag making method for thermoplastic resin film bags with a spout is conventionally
A method has been adopted in which the spout and the film are simultaneously heat-sealed using a modified hot plate heat sealer or an impulse heat sealer, or the spout is preheated and a similar heat seal is performed.
しかるに上記従来法によるときは、注出入口の形状、シ
ール熱板の形状等により注出入口のヒートシール部の左
右外方とフィルム合掌部の接触部分のヒートシール強度
が不十分となる場合がしばしば起る。特にフィルム厚さ
が１００％以上のごとき厚手フィルムの場合には注出入
口の形状にもよるがヒートシールの際フィルムを注出入
口形状に変形したためヒートシールされない部分の変形
からの復元応力の影響により、一旦融着した部分の剥離
現象が起り易い欠点があった。However, when using the above conventional method, the heat sealing strength of the contact area between the left and right outer sides of the heat sealing part of the spouting port and the film joining part often becomes insufficient due to the shape of the spouting port, the shape of the sealing hot plate, etc. Ru. Particularly in the case of a thick film with a film thickness of 100% or more, depending on the shape of the spout, the film is deformed to the shape of the spout during heat sealing, so due to the influence of restoring stress from the deformation of the part that is not heat sealed. There was a drawback that the part once fused was easily peeled off.
（発明が解決しようとする問題点）
本発明の目的は上記のごとき従来技術の欠点を排除しヒ
ートシール強度を改善した注出入日付熱可塑性樹脂フィ
ルム袋の製袋方法を提供することにある。(Problems to be Solved by the Invention) An object of the present invention is to provide a method for making pour-date thermoplastic resin film bags that eliminates the above-mentioned drawbacks of the prior art and improves heat sealing strength.
（問題点を解決するための手段）
本発明の要旨は上記問題点を解決するため、重ね合った
熱可塑性樹脂フィルムの間に筒体に支持された注出入口
を挿入し、筒体を通じてフイルム間を減圧して熱可塑性
樹脂フィルムと注出入口をヒートシールすることを特徴
とする製袋方法にある。(Means for Solving the Problems) The gist of the present invention is to solve the above-mentioned problems by inserting a pouring inlet supported by a cylinder between the stacked thermoplastic resin films, and passing the spout between the films through the cylinder. The bag-making method is characterized in that the thermoplastic resin film and the spout are heat-sealed by reducing the pressure.
本発明を図面によって説明すると次の通りである。第１
図は本発明の方法を実現するため断面図を示す、本図に
おいて熱可塑性樹脂フィルムｌはそのヒートシール部２
において注出入口本体３を挿入して一体的にヒートシー
ルされる。外側輪郭を注出入口本体３の内側輪郭に合せ
フィルム間側端部に空気吸引孔８を有する筒状支持体４
にゴムパツキン５を介して注出入口本体３を外挿し、上
記支持体を通じて重ね合せた熱可塑性樹脂フィルム１間
を、真空ポンプ等による減圧系により減圧口６を経て減
圧してフィルムシール部２を注出入口本体３と共にヒー
トシールする。The present invention will be explained below with reference to the drawings. 1st
The figure shows a cross-sectional view for realizing the method of the present invention. In this figure, the thermoplastic resin film l is
At this step, the spout main body 3 is inserted and integrally heat-sealed. A cylindrical support 4 whose outer contour is aligned with the inner contour of the spout main body 3 and has an air suction hole 8 at the end between the films.
The spout main body 3 is inserted through the rubber gasket 5, and the pressure is reduced between the stacked thermoplastic resin films 1 through the support body through the decompression port 6 using a decompression system such as a vacuum pump, and the film seal portion 2 is injected. It is heat-sealed together with the entrance/exit main body 3.
熱可塑性樹脂フィルムは単体、複合、単層、多層等のい
づれでも良く、フィルム形状はチューブ状、フラット状
のいづれでもよい、またフィルムの厚さは任意でよいが
特に５０ｇ以上であって５００終以下の場合が好ましい
、注出入口の断面形状は円筒形、角柱形、だ円形おるい
はその他の形状でも良い、シール温度およびシール時間
はシールすべきフィルムのヒートシール特性に適合した
条件を選択すればよい、たとえば長鎖分岐を有するポリ
エチレンフィルムであってその厚さ１００ ％のものを
ヒートシールする場合におけるシール温度は１３０−１
９０℃、シール時間は２〜１０秒程度である。減圧口６
における減圧は−０，１Ｋｇ／ｃゴ以上であり、この減
圧状態はヒートシール終了後は直ちに常圧に戻してもよ
いが、厚さ１００ＩＬ以上の比較的厚手のフィルムにお
いてはヒートシール部２が冷却固化するまでヒートシー
ル時の減圧状態を保つことが好ましく、これによってシ
ール状態を完全にすることができる。The thermoplastic resin film may be simple, composite, single layer, or multilayer, and the film shape may be either tubular or flat.Although the thickness of the film may be arbitrary, it is particularly 50 g or more with a 500% finish. The following cases are preferable; the cross-sectional shape of the pouring inlet may be cylindrical, prismatic, oval, or other shapes; the sealing temperature and sealing time should be selected to match the heat sealing characteristics of the film to be sealed. For example, when heat sealing a 100% thick polyethylene film with long chain branches, the sealing temperature is 130-1.
The temperature is 90° C. and the sealing time is about 2 to 10 seconds. Decompression port 6
The reduced pressure is -0.1 Kg/c or more, and this reduced pressure state may be returned to normal pressure immediately after the heat sealing is completed, but for relatively thick films of 100 IL or more, the heat seal part 2 It is preferable to maintain the reduced pressure state during heat sealing until the material is cooled and solidified, thereby ensuring a perfect sealing state.
ヒートシールを実施する際、注出入口３を予め予熱して
おくことはヒートシール時間の短縮化および製袋速度の
向上のため効果的である。また注出入口はヒートシール
部２に挟まれるように左右外方に延設してエラ状薄片体
７が形成されている場合はヒートシール強度の一層の向
上のため効果的である。該薄片体７の大きさは好ましく
はタテはシール巾以内、ヨコ１〜５ｍ腸、厚さは注出入
口本体側縁部で０．２ｍｍ以内で左右縁部へ向って徐々
に薄くなるのが好ましい、また筒状支持体４は先端に行
く程細くなるのが好ましくそのテーパ一部の角度および
長さはそれぞれ５〜３０°、 ２０〜６ａｍ−の範囲が
好ましい、さらに筒状支持体４の熱可塑性樹脂フィルム
ｌ側の先端部とヒートシール部２の近傍には空気吸引孔
８を有する。When carrying out heat sealing, it is effective to preheat the spout 3 in advance in order to shorten the heat sealing time and improve the bag making speed. Further, if the spout opening is provided with a gill-shaped thin piece body 7 extending outward from the left and right so as to be sandwiched between the heat-sealing portions 2, it is effective to further improve the heat-sealing strength. The size of the thin piece body 7 is preferably within the seal width in the vertical direction, 1 to 5 m in the horizontal direction, and the thickness is preferably within 0.2 mm at the side edge of the spout body and gradually becomes thinner toward the left and right edges. The cylindrical support 4 preferably becomes thinner toward the tip, and the angle and length of the tapered part are preferably in the range of 5 to 30 degrees and 20 to 6 am, respectively. Air suction holes 8 are provided at the tip end on the plastic resin film l side and near the heat-sealed portion 2 .
（実施例）
密度０Ｊ２４ ｇ ／ Ｃゴ、メルトインデックス １
．０ｇ／１０■ｉｎである長鎖分岐を有するポリエチレ
ンフィルムを第１図に示す熱板式ヒートシール装置によ
ってヒートシールし注出入口付熱可塑性樹脂フィルム袋
を製袋した。(Example) Density 0J24 g/Cgo, Melt index 1
．． A polyethylene film having long chain branches of 0 g/10 inch was heat-sealed using a hot plate type heat-sealing apparatus shown in FIG. 1 to produce a thermoplastic resin film bag with a pouring port.
袋の寸法はタテ３００ｍ■、ヨコ１５０腸腸、熱板は巾
３０ｍ騰、長さ２００■劇、注出入口の本体内径１７ｍ
ｍ、外寸３５■腸、筒状支持体の外径は１５−■であっ
た。熱板の加熱温度は１３０℃、また注出入口は左右外
方に薄片体を設けないものと設けたものを用意したが、
その薄片体の寸法は、タテ２０■膳×ヨコ２．５腸腸×
注出入口本体側縁部の厚さＯ１ｌ謬■、−盲部状支持体
のテーパ一部の角度は１０°、長さは３０■腸、空気吸
引孔は筒状支持体先端部で１個（孔径５膳履）、同支持
体テーパ一部手前左右で各１個（孔径り、５ｍｍ） ’
を吸引圧は−０，５Ｋｇ／ ｃ ｍ″であった。The dimensions of the bag are 300 m vertically, 150 m horizontally, the heating plate is 30 m wide, 200 m long, and the inner diameter of the spout is 17 m.
The outer diameter of the cylindrical support was 15 mm. The heating temperature of the hot plate was 130°C, and the pouring inlets were prepared with and without thin pieces on the left and right sides.
The dimensions of the flake body are 20 cm vertically x 2.5 cm wide x
The thickness of the side edge of the spout inlet main body is O1l, - The taper of the blind support is 10°, the length is 30cm, and there is one air suction hole at the tip of the cylindrical support ( 5mm hole diameter), 1 piece each on the left and right in front of the tapered part of the same support (hole diameter, 5mm).
The suction pressure was -0,5Kg/cm''.
なお注出入口を予熱する場合は２５０℃で１０秒間とし
た。In addition, when preheating the pouring inlet, it was set to 250 degreeC for 10 seconds.
種々の条件においてフィルムと注出入口とを一体的にヒ
ートシールし、第１表における各試験番号の袋１００袋
について水を充填し、 １１０℃で４０分間水蒸気処理
した後の漏水した袋の数を肉眼観察で調べ第１表に示す
結果を得た。Heat-seal the film and spout inlet under various conditions, fill 100 bags with each test number in Table 1 with water, and calculate the number of bags that leaked water after steaming at 110°C for 40 minutes. The results shown in Table 1 were obtained by visual observation.
（以下余白）
（第１表）
（比較例）
減圧を行わない他は実施例と同一の条件にて実施したヒ
ートシールの結果を第２表に示す。(Margin below) (Table 1) (Comparative Example) Table 2 shows the results of heat sealing performed under the same conditions as in the example except that no pressure reduction was performed.
（第２表）
上記実施例および比較例を対比するに？Ｏ＃Ｌ以上の比
較的厚手フィルムのヒートシールにおいて比較例の示す
ごとく減圧を行わない通常法ヒートシールにおいてはヒ
ートシール強度は不良であって袋の漏水が認められ、と
くに４５０！以上の厚手フィルムにおいては従来法シー
ルは全く不良の結果が得られているのに反し、実施例１
）〜６）に見るごとく本発明の方法においてはヒートシ
ール強度はフィルムの厚さ如何にかかわらず良好または
極めて良好で袋の漏水を防止した結果を得ておす、本発
明の方法の卓越性は十分に発揮されていることは明らか
である。(Table 2) How to compare the above examples and comparative examples? When heat-sealing a relatively thick film of O#L or more, as shown in the comparative example, in the conventional heat-sealing without reducing the pressure, the heat-sealing strength was poor and water leakage from the bag was observed, especially at 450! In contrast to the conventional method of sealing with the above-mentioned thick films, the result was completely poor.
) to 6), in the method of the present invention, the heat sealing strength is good or very good regardless of the thickness of the film, and water leakage from the bag is prevented.The excellence of the method of the present invention is that It is clear that they are performing well.
（発明の効果）
上記において詳記した通り、注出入口付熱可塑性樹脂フ
ィルム袋のヒートシールによる製袋方法において本発明
の方法は従来法に比してヒートシール強度において格段
にすぐれており、これにより製袋歩出り、品質、製袋効
率を向上し、製袋コスト低下に顕著な効果を発揮しうる
方法と云うことができる。(Effects of the Invention) As detailed above, in the method of making thermoplastic resin film bags with pouring ports by heat sealing, the method of the present invention is significantly superior in heat sealing strength compared to the conventional method. This can be said to be a method that can improve bag-making yield, quality, and bag-making efficiency, and exhibit a remarkable effect on reducing bag-making costs.
第１図は本発明の方法を実施するための断面図を示す。
１−熱可塑性１１脂フイルム、２−ヒートシール部、３
−注出入口本体、４−筒状支持体、５−ゴムパツキン、
６−減圧口、７−薄片体、８−空気吸引孔。FIG. 1 shows a cross-sectional view for carrying out the method of the invention. 1-Thermoplastic 11 fat film, 2-Heat seal portion, 3
- spout main body, 4- cylindrical support, 5- rubber packing,
6- pressure reduction port, 7- flake body, 8- air suction hole.
Claims (1)
た注出入口を挿入し筒体を通じてフィルム間を減圧して
熱可塑性樹脂フィルムと注出入口をヒートシールするこ
とを特徴とする製袋方法。A bag making method characterized by inserting a spout supported by a cylindrical body between stacked thermoplastic resin films, reducing pressure between the films through the cylindrical body, and heat sealing the thermoplastic resin film and the spout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60104016A JPS61262118A (en) | 1985-05-17 | 1985-05-17 | Bag making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60104016A JPS61262118A (en) | 1985-05-17 | 1985-05-17 | Bag making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61262118A true JPS61262118A (en) | 1986-11-20 |
| JPH035304B2 JPH035304B2 (en) | 1991-01-25 |
Family
ID=14369460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60104016A Granted JPS61262118A (en) | 1985-05-17 | 1985-05-17 | Bag making method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61262118A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7736288B2 (en) | 2004-03-30 | 2010-06-15 | Hosokawa Yoko Co., Ltd. | Method and apparatus for producing bag with mouth member |
-
1985
- 1985-05-17 JP JP60104016A patent/JPS61262118A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7736288B2 (en) | 2004-03-30 | 2010-06-15 | Hosokawa Yoko Co., Ltd. | Method and apparatus for producing bag with mouth member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH035304B2 (en) | 1991-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |