JPH04142920A - Bag-making method - Google Patents
Bag-making methodInfo
- Publication number
- JPH04142920A JPH04142920A JP2267258A JP26725890A JPH04142920A JP H04142920 A JPH04142920 A JP H04142920A JP 2267258 A JP2267258 A JP 2267258A JP 26725890 A JP26725890 A JP 26725890A JP H04142920 A JPH04142920 A JP H04142920A
- Authority
- JP
- Japan
- Prior art keywords
- film
- stretched
- heat
- sealing
- laminate
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000007789 sealing Methods 0.000 abstract description 15
- 239000004743 Polypropylene Substances 0.000 abstract description 11
- 229920001155 polypropylene Polymers 0.000 abstract description 11
- -1 polypropylene Polymers 0.000 abstract description 9
- 229920006284 nylon film Polymers 0.000 abstract description 8
- 239000004698 Polyethylene Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 229920000573 polyethylene Polymers 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 239000005001 laminate film Substances 0.000 abstract 4
- 238000010276 construction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Making Paper Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、延伸ナイロンフィルム等の延伸フィルムとポ
リエチレン等のヒートシール性フィルムからなる積層フ
ィルムの連続状フィルムから袋を製造する製袋方法に関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bag making method for manufacturing bags from a continuous film of a laminated film consisting of a stretched film such as a stretched nylon film and a heat-sealable film such as polyethylene. .
現在、多くの袋は、外側が延伸ナイロンフィルム、延伸
ポリプロピレンフィルム、からなる延伸フィルム内側が
ポリエチレンフィルム、ポリプロピレンフィルムからな
るヒートシール性フィルムの積層フィルムからなってい
る。Currently, many bags are made of a laminated film consisting of a stretched nylon film or a stretched polypropylene film on the outside, and a heat-sealable heat-sealable film made of a polyethylene film or polypropylene film on the inside.
外側が延伸フィルムからなるので、印刷適性、機械強度
、耐熱性が優れ、内側がヒートシール性フィルムからな
り、シールバーにより製袋可能で各種食品用包装袋に多
く用いられている。Since the outside is made of a stretched film, it has excellent printability, mechanical strength, and heat resistance, and the inside is made of a heat-sealable film that can be made into bags with a seal bar and is often used in various food packaging bags.
この外側に用いられる延伸フィルムは、製膜時に延伸加
工し、多行取りで製造されているので、各行により延伸
の程度が異なっている。The stretched film used on the outside is stretched at the time of film formation and manufactured in multiple lines, so the degree of stretching differs depending on each line.
この延伸フィルムを用いて、シールバーを用いヒートシ
ール法により製袋すると、第３図に示すように、部分的
に収縮率が異なり、部分的に変形が生じてしまっていた
。When this stretched film was used to make bags by a heat sealing method using a seal bar, the shrinkage rates were different in some areas and deformation occurred in some areas, as shown in FIG.
このような変形を小さくするため従来は、（ａ）シール
バーでヒートシールした直後に冷却、または（ｂ）延伸
フィルムの製膜時に収縮率が均一な中心に近いフィルム
を用いることが行われていた。In order to reduce such deformation, conventional methods have been to (a) cool the film immediately after heat sealing with a seal bar, or (b) use a film close to the center with a uniform shrinkage rate when forming the stretched film. Ta.
前記（ａ）の方法では、シールバーでヒートシールした
時に既に変形が生じているので、ヒートシール直後に冷
却しても、変形防止の根本的な解決とはならなかった。In method (a), deformation has already occurred when heat-sealing with a seal bar, so even if the product is cooled immediately after heat-sealing, it is not a fundamental solution to preventing deformation.
また（ｂ）の手段は、多行取りの特定の位置の延伸フィ
ルムを用いるため、フィルムを推定して購入しなければ
ならず、管理が面倒であった。Furthermore, since the method (b) uses a multi-line stretched film at a specific position, it is necessary to estimate and purchase the film, which is troublesome to manage.
以上のように包装袋として一般的な外側に延伸フィルム
を用いた、ヒートシール法により製袋すると、ヒートシ
ールバーの熱により延伸フィルムが変形し、製造された
袋に不良が発生するのを解消し、本発明は、延伸フィル
ムの変形を防止した製袋方法を提供することを目的とす
る。As mentioned above, when bags are made using the heat sealing method using a stretched film on the outside, which is common for packaging bags, the heat of the heat seal bar deforms the stretched film and causes defects in the manufactured bags. However, an object of the present invention is to provide a bag making method that prevents deformation of a stretched film.
本発明は、延伸フィルムとヒートシール性フィルムから
なる積層フィルムの連続状フィルムをシールバーでシー
ルする製袋方法において、シールバーでシールする前に
連続状フィルム全体を予熱することを特徴とする製袋方
法である。The present invention provides a bag making method in which a continuous film of a laminated film consisting of a stretched film and a heat-sealable film is sealed with a seal bar, which is characterized in that the entire continuous film is preheated before being sealed with a seal bar. This is the bag method.
シールバーでシールする前にフィルム全体を予熱するの
で、シール前にフィルムの収縮率が均一となり、シール
バーでシールしても部分的な変形が小さくなった。Since the entire film was preheated before being sealed with a seal bar, the shrinkage rate of the film was uniform before sealing, and local deformation was small even when sealed with a seal bar.
また、シールする前にフィルム全体を予熱するので、シ
ール時間が短かくても確実なシールが可能となった。Additionally, since the entire film is preheated before sealing, reliable sealing is possible even with a short sealing time.
以下本発明の実施例にいて説明する。 The present invention will be explained below in Examples.
第１図は、本発明の製袋方法の工程を示す説明図で、延
伸フィルムとヒートシール性フィルムからなる積層フィ
ルムの連続状フィルム１を加熱トンネル２を通して予熱
後、シールバーを用いて、サイドシール３、エンドシー
ル４を行い、次にシール部分を冷却部５で冷却し、所定
の大きさに切断し製袋する製袋方法である。FIG. 1 is an explanatory diagram showing the steps of the bag making method of the present invention. After preheating a continuous film 1 of a laminated film consisting of a stretched film and a heat-sealable film through a heating tunnel 2, using a seal bar, This is a bag making method in which a seal 3 and an end seal 4 are performed, and then the sealed portion is cooled in a cooling section 5, and the bag is cut into a predetermined size.
ここで、前記連続状フィルム１は、具体的には、延伸ナ
イロンフィルム／ポリエチレンフィルム、延伸ナイロン
フィルム／ポリプロピレンフィルム、延伸ポリプロピレ
ンフィルム／ポリエチレン、延伸ポリプロピレンフィル
ム／ポリプロピレンフィルムの構成からなる。Here, the continuous film 1 specifically has a structure of stretched nylon film/polyethylene film, stretched nylon film/polypropylene film, stretched polypropylene film/polyethylene, and stretched polypropylene film/polypropylene film.
また、加熱トンネル２を用いての予熱温度は、使用する
フィルムにより異なるが、延伸フィルムの延伸温度以上
、融点以下の温度、−船釣に８０〜２１０°Ｃの範囲で
、０．３〜２秒間加熱して行う。In addition, the preheating temperature using the heating tunnel 2 varies depending on the film used, but the temperature is above the stretching temperature of the stretched film and below the melting point. Heat for seconds.
一方、シールバーのヒートシールの温度は、°Ｃヒート
シール性フィルムの融点以上の温度、０．５〜１秒間行
うのが一般的である。On the other hand, the seal bar is generally heat-sealed at a temperature higher than the melting point of the heat-sealable film for 0.5 to 1 second.
ここで具体的な試験例について説明する。Here, a specific test example will be explained.
延伸ナイロンフィルム／ポリプロピレンフィルムからな
る連続状フィルムを第１図の工程で製袋した場合（試験
例１）と、第１図の予熱がない以外は、第１図と同じ工
程で製袋した場合（試験例２）との製袋された袋の変形
を比較した。A case where a continuous film consisting of stretched nylon film/polypropylene film was made into a bag using the process shown in Figure 1 (Test Example 1), and a case where a bag was made using the same process as shown in Figure 1 except that there was no preheating as shown in Figure 1. (Test Example 2) and the deformation of the manufactured bag were compared.
ここで前記使用したフィルムは、延伸ナイロンフィルム
は延伸率が２〜７％で、延伸温度°Ｃで、また加熱トン
ネルでの予熱は、１３０°Ｃで、０．５秒間行い、シー
ルバーでヒートシールを行った。The film used here was a stretched nylon film with a stretching ratio of 2 to 7% and a stretching temperature of °C, preheated in a heating tunnel at 130 °C for 0.5 seconds, and heated with a seal bar. I made a seal.
この結果、第２図Ａ、Ｂに示すように、試験例１では、
カールの高さが２ｍｍであったのに対して、予熱を行わ
ない試験例２では、カールの高さが１９ｍｍであった。As a result, as shown in FIG. 2A and B, in Test Example 1,
The curl height was 2 mm, whereas in Test Example 2 in which no preheating was performed, the curl height was 19 mm.
また、製袋スピードは試験例１は、７７シヨツト／分で
あったのに対して、試練例２は、６５ショット／分であ
った。Further, the bag making speed in Test Example 1 was 77 shots/min, while in Test Example 2 it was 65 shots/min.
本発明は、以上の構成からなるので、延伸フィルムを用
いた積層フィルムから袋を製袋しても変形が小さく、製
袋不良が低下した。Since the present invention has the above configuration, even when a bag is made from a laminated film using a stretched film, deformation is small and bag making defects are reduced.
また、フィルム製法上に生じる延伸率の異なる延伸フィ
ルムを用いても、変形の少ない製袋が可能で、特定の製
造部分のフィルムを用いる必要がなく、フィルムの管理
が容易となった。In addition, even if stretched films with different stretching ratios that occur in the film manufacturing method are used, bags can be made with little deformation, and there is no need to use films from specific manufacturing parts, making film management easier.
さらに、予熱後ヒートシールするので、従来の製袋スピ
ードに比較し、製袋スピードが向上し、製造効率が向上
した。Furthermore, since heat sealing is performed after preheating, bag making speed is improved compared to conventional bag making speed, and manufacturing efficiency is improved.
第１図は、製袋方法の工程を示す説明図、第２図Ａ、Ｂ
は袋の変形の比較を示す説明図、第３図は、袋の変形状
態を示す説明図である。
１・・・連続状フィルム
２・・・加熱トンネル
３・・・サイドシール
４・・・エンドシール
５・・・冷却部
特 許 出 願 人
凸版印刷株式会社
代表者 鈴木和夫Figure 1 is an explanatory diagram showing the steps of the bag making method, Figure 2 A and B
3 is an explanatory diagram showing a comparison of deformation of the bag, and FIG. 3 is an explanatory diagram showing a deformed state of the bag. 1...Continuous film 2...Heating tunnel 3...Side seal 4...End seal 5...Cooling part Patent application Person Toppan Printing Co., Ltd. Representative Kazuo Suzuki
Claims (1)
積層フィルムの連続状フィルムをシールバーでシールす
る製袋方法において、シールバーでシールする前に連続
状フィルム全体を予熱することを特徴とする製袋方法。(1) A bag making method in which a continuous film of a laminated film consisting of a stretched film and a heat-sealable film is sealed with a seal bar, characterized in that the entire continuous film is preheated before being sealed with a seal bar. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2267258A JPH04142920A (en) | 1990-10-04 | 1990-10-04 | Bag-making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2267258A JPH04142920A (en) | 1990-10-04 | 1990-10-04 | Bag-making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04142920A true JPH04142920A (en) | 1992-05-15 |
Family
ID=17442344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2267258A Pending JPH04142920A (en) | 1990-10-04 | 1990-10-04 | Bag-making method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04142920A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5540644A (en) * | 1991-10-09 | 1996-07-30 | Konica Corporation | Packing bag for light sensitive materials and manufacturing method therfore |
-
1990
- 1990-10-04 JP JP2267258A patent/JPH04142920A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5540644A (en) * | 1991-10-09 | 1996-07-30 | Konica Corporation | Packing bag for light sensitive materials and manufacturing method therfore |
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