JPH0788038B2 - 緩衝性フイルムのヒ−トシ−ル方法 - Google Patents

緩衝性フイルムのヒ−トシ−ル方法

Info

Publication number
JPH0788038B2
JPH0788038B2 JP15098087A JP15098087A JPH0788038B2 JP H0788038 B2 JPH0788038 B2 JP H0788038B2 JP 15098087 A JP15098087 A JP 15098087A JP 15098087 A JP15098087 A JP 15098087A JP H0788038 B2 JPH0788038 B2 JP H0788038B2
Authority
JP
Japan
Prior art keywords
heat
sealing
film
buffer film
seal
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
Application number
JP15098087A
Other languages
English (en)
Other versions
JPS63312820A (ja
Inventor
忠夫 安増
Original Assignee
協和電機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 協和電機株式会社 filed Critical 協和電機株式会社
Priority to JP15098087A priority Critical patent/JPH0788038B2/ja
Publication of JPS63312820A publication Critical patent/JPS63312820A/ja
Publication of JPH0788038B2 publication Critical patent/JPH0788038B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7437—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc the tool being a perforating tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/342—Preventing air-inclusions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/725—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs
    • B29C66/7252—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs hollow-walled
    • B29C66/72523—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being hollow-walled or honeycombs hollow-walled multi-channelled or multi-tubular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2024/00—Articles with hollow walls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は包装材料として使用される緩衝性フイルムの
ヒートシール方法に関するものである。
〔従来の技術〕
一般的に高周波接着による合成樹脂フイルムのヒートシ
ールは、上下２枚のフイルムにシールワイヤを押付けて
行っている。
〔発明が解決しようとする問題点〕 このようなヒートシールを、ベースフイルムの片面に多
数の気袋を一定間隔ごとに全面的に有する緩衝性フイル
ムに応用すると、ヒートシール個所の気袋がシールワイ
ヤによる押圧力によって内圧抵抗を示し、またシールワ
イヤとの接触により溶融して気袋部分のフイルムが破損
する。
この破損により生じた切片のほとんどは、ベースフイル
ムに溶着せずに、ヒートシールラインに剥離したように
残る。このためヒートシールラインの仕上り状態が悪
く、フイルム相互は完全に溶着しているのに溶着不良な
る現象を強く与えるなどの欠点があった。
この発明は上記問題点を解決するために考えられたもの
であって、その目的はきわめて簡単な手段の下に気袋部
分のフイルムをもベースフイルムと共に溶着して、ヒー
トシールラインの仕上りを良好となすことができる新た
な緩衝性フイルムのヒートシール方法を提供することに
ある。
〔問題点を解決するための手段〕
上記目的によるこの発明は、ベースフイルムの片面に多
数の気袋を一定間隔ごとに全面的に有する複数枚の緩衝
性フイルムをヒートシールするに当り、ヒートシール時
にシール個所の気袋を部分的に開口して内圧を除去する
ことにより上記問題点を解決してなるものである。
〔作 用〕
上記方法では、気袋の開口によって封入された空気が外
部に流出し易くなり、シールワイヤにより気袋が押圧さ
れたとき、内圧抵抗を生ずることなく気袋は偏平化して
ベースフイルムと接する。かかる状態において溶融が生
ずると、押し漬された状態の気袋はそのままベースフイ
ルムと溶着し、そこに仕上り状態が良好な両緩衝性フイ
ルムのヒートシールが生ずる。
〔実施例〕
図中１は合成樹脂の緩衝性フイルムで、ベースフイルム
２の片面に、他のフイルムの貼合をもって形成した多数
の気袋3,3が一定間隔ごとに全面的に設けてある。
４はヒートシーラで、シールワイヤ５を下側面に有する
シートバー６と、その下方に配置された受台７とからな
り、かつシールワイヤ５は高周波発生器に接続されてい
る。
またシールバー６の両側には、上記気袋3,3を部分的に
開口する鋭利な多数の切開刃8,8を、気袋3,3の間隔より
も小さい間隔にて下辺に一体形成した補助板9,9が、上
記切開刃8,8の先端をシールワイヤ５よりも若干下方に
位置させて設けてある。
なお、シールワイヤ５と切開刃8,8との間隔も気袋間隔
より小さくしてある。また図示の補助板9,9はシールバ
ー６に固定してあるが、場合によっては上下動自在に取
付けてもよく、この時にはばね圧により常時下方へ弾圧
し、切開刃8,8に先端抵抗が生じたとき、それによりば
ね圧に抗して上方へ移動し、切開刃先端がシールワイヤ
５の位置まで後退するようにして置く。
上記緩衝性フイルム１のヒートシールは、まず通常２枚
のフイルムを気袋側を内側にして上下に重ね、これをシ
ールバー６と受台７との間に入れてシール個所を受台上
にセットする。
次にシールバー６を下して緩衝性フイルム1,1のシール
個所を受台７とによりプレスする。このプレスによりま
ず切開刃8,8が上下気袋3,3のフイルムに刺って気袋3,3
を開口する。これにより気袋内の空気が外部に流出する
ようになって内圧抵抗が除かれ、気袋3,3は押し漬され
て上下のフイルムがシールワイヤ５により受台７に押付
けられ、高周波によって溶融するとともに、一体に溶着
し、更にヒートシール部分にて溶断される。この結果、
気袋部分のフイルムも一体に溶着され、ヒートシール部
分には第５図に示すような破袋によるフイルムのめくれ
が発生せず、仕上り状態はきわめて良好となる。
〔発明の効果〕
この発明は上述のように、ヒートシール時にシール個所
の気袋を部分的に開口して内圧を除去し、内圧による破
袋を防止した上にてシートヒールを行うことから、従来
のように破袋による切片の発生がなく、フイルム相互を
完全に溶着し得ると共に仕上り状態もきわめて良好で外
観上も体裁がよくなる。また切開刃を有する補助部材を
シールワイヤの側方に添設するだけで他に特別な手段を
要せずに行うことができるため、操作も従来法と何等変
るところがないなどの特長を有する。
【図面の簡単な説明】
図面はこの発明に係る緩衝性フイルムのヒートシール方
法を略示するもので、第１図はフイルムセット時の縦断
正面図、第２図はその側面図、第３図はヒートシール時
の部分断面図、第４図はヒートシール後の部分断面図、
第５図は従来法によるヒートシール後の部分断面図であ
る。 １……緩衝性フイルム、２……ベースフイルム ３……気袋、４……ヒートシーラ ５……シールワイヤ、６……シールバー ７……受台、８……切開刃 ９……補助板

Claims (1)

    【特許請求の範囲】
  1. 【請求項１】ベースフイルムの片面に多数の気袋を一定
    間隔ごとに全面的に有する複数枚の緩衝性フイルムをヒ
    ートシールするに当り、ヒートシール時にシール個所の
    気袋を部分的に開口して内圧を除去してなることを特徴
    とする緩衝性フイルムのヒートシール方法。
JP15098087A 1987-06-17 1987-06-17 緩衝性フイルムのヒ−トシ−ル方法 Expired - Lifetime JPH0788038B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15098087A JPH0788038B2 (ja) 1987-06-17 1987-06-17 緩衝性フイルムのヒ−トシ−ル方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15098087A JPH0788038B2 (ja) 1987-06-17 1987-06-17 緩衝性フイルムのヒ−トシ−ル方法

Publications (2)

Publication Number Publication Date
JPS63312820A JPS63312820A (ja) 1988-12-21
JPH0788038B2 true JPH0788038B2 (ja) 1995-09-27

Family

ID=15508656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15098087A Expired - Lifetime JPH0788038B2 (ja) 1987-06-17 1987-06-17 緩衝性フイルムのヒ−トシ−ル方法

Country Status (1)

Country Link
JP (1) JPH0788038B2 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06254969A (ja) * 1993-03-09 1994-09-13 Hanagata:Kk プラスチックフィルムの溶断溶着装置
JP6491005B2 (ja) * 2015-03-24 2019-03-27 日鐵住金建材株式会社 複合構造体の製造方法及び温度調節パネル
CN114228178B (zh) * 2021-12-16 2023-12-12 南通靖航信息科技有限公司 一种医用塑料袋热封模具及其使用方法

Also Published As

Publication number Publication date
JPS63312820A (ja) 1988-12-21

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