JPH026682B2 - - Google Patents

Info

Publication number
JPH026682B2
JPH026682B2 JP55180607A JP18060780A JPH026682B2 JP H026682 B2 JPH026682 B2 JP H026682B2 JP 55180607 A JP55180607 A JP 55180607A JP 18060780 A JP18060780 A JP 18060780A JP H026682 B2 JPH026682 B2 JP H026682B2
Authority
JP
Japan
Prior art keywords
inner layer
edge
fusing
paper bag
layer
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
JP55180607A
Other languages
English (en)
Other versions
JPS56127440A (en
Inventor
Kutsukuheruman Gusutafu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IKOMA PATSUKUTEHINIIKU GmbH
Original Assignee
IKOMA PATSUKUTEHINIIKU GmbH
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 IKOMA PATSUKUTEHINIIKU GmbH filed Critical IKOMA PATSUKUTEHINIIKU GmbH
Publication of JPS56127440A publication Critical patent/JPS56127440A/ja
Publication of JPH026682B2 publication Critical patent/JPH026682B2/ja
Granted 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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1448—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface radiating the edges of the parts to be joined, e.g. for curing a layer of adhesive placed between two flat parts to be joined, e.g. for making CDs or DVDs
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1496—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of masks
    • 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
    • B29C66/40—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
    • 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
    • B29C66/723—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 multi-layered
    • B29C66/7232—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 multi-layered comprising a non-plastics layer
    • B29C66/72327—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 multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • 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
    • B29C66/723—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 multi-layered
    • B29C66/7232—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 multi-layered comprising a non-plastics layer
    • B29C66/72321—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 multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Thermal Sciences (AREA)
  • Making Paper Articles (AREA)
  • Closing Of Containers (AREA)
  • Package Closures (AREA)
  • Bag Frames (AREA)

Description

【発明の詳細な説明】 本発明は、内側層に設けられた、融着可能な内
側被覆層と段状になつた閉鎖フラツプとを有する
多層の紙袋の内側層を融着する方法に関する。
融着可能な内側層を有する多層の紙袋には種種
異なる構造のものが公知である。例えば帯状シー
トが内側の紙層に内張りされているか又は接着さ
れているものがある。さらに内側層の内面に熱可
塑性の被覆層、例えばポリエチレン被覆層が施さ
れていてもよい。
従来は融着可能な内側層の融着は熱を種々異な
る方法で加えることによつて行なわれていた。例
えば必要な熱を加熱された押圧条片で融着しよう
とする個所に加えることが公知である。又、融着
を赤外線放熱器を使用して行なうことも公知であ
る。
従来公知の方法は、紙袋の片側、例えば前側で
しか融着しようとする内側層に直接的に熱を加え
ることができないという欠点を有している。すな
わち前側の内側層と融着しようとする後ろ側の内
側層は袋の裏側からは直接的に到達することがで
きない。むしろ後ろ側の内側層に加えようとする
熱は後側の内側層を覆う閉鎖フラツプを通して加
えられなければならない。この結果として融着可
能な内側層を有するこのような袋の製造速度と加
工速度は極めて制限される。加工速度は内側層又
は内側被覆層を取巻く外側の紙層の厚さと数とに
よつてほぼ決められる。
本発明の課題は外側の紙層の数と厚さとは無関
係な、できるだけ高い加工速度を可能にする冒頭
に述べた形式の方法を提供することである。
この課題は本発明によれば、融着する前に紙袋
の裏面に配置された閉鎖フラツプを、袋の中央に
向かう方向で見て、内側層の縁の後ろに位置して
いる折り線を中心として旋回させて内側層から離
反させ、閉鎖フラツプを内側層から離反させた状
態で露出した内側層に外部から熱を加えて、互い
に接触した内側被覆層を融着することによつて解
決された。
このような方法は紙袋の加工速度を極めて高め
ることを可能にする。又、この場合には融着に必
要な熱を融着しようとする内側被覆層に直接的に
加えることができ、それを妨げる外側層を熱が通
過する必要がなくなることによつて必要な融着が
迅速に行なわれるだけでなく、質の高い融着結合
性が得られる。
内側層を融着するために必要な熱エネルギは少
なくともほぼ前面から内側層の端縁に加えられる
と極めて有利であることが証明された。
熱エネルギを前面から端縁に加えることは端面
側に配置された赤外線放熱装置によつて極めて簡
単に行なうことができる。この場合には加えられ
るエネルギ量は紙袋の送り速度に関連して調整可
能であると有利である。
本発明の方法の別の特徴によれば折り線は内側
層の端縁と少なくともほぼ同一平面内に位置して
いる。このような実施例に於ては閉鎖フラツプの
折り線の高さまで達していなければならない側面
折畳切込みは省略することができる。
さらに本発明の方法によれば融着に必要な熱エ
ネルギが赤外線放熱器を介して供給される間、内
側層の端縁の範囲を圧着機構を用いて相互に押し
合わせておくことが提案されている。このような
構成は熱が実際に加えられる範囲、すなわち端面
に熱の供給が制限されるという利点を有してい
る。シートは熱の作用によつて収縮するが、これ
は最高でも圧着機構までしか及ばない。これによ
つて融着個所の質は特に良くなる。実地に於ては
圧着機構若しくはこれによつて生ぜしめられた圧
着ラインは約５mmから10mmだけ内側層の端縁の下
に位置している。この場合には５mm〜10mmの露出
した範囲に於て融着及び収縮過程が行なわれる。
このようにして行なわれた融着結合部には加熱さ
れた圧着機構、融着バンド又はそれに類似したも
のによつて形成された通常の融着結合よりも大き
な負荷をかけることができる。
次に図面について本発明を説明する： 第１図から第５図までに示されている側面に折
畳線を有する袋は３層、つまり２層の外側紙層
１，２と同様に紙から成るが内側にポリエチレン
被覆層を備えた１層の内側層３とから構成されて
いる。しかし本発明の方法は任意の数の外側紙層
を有する袋にも適用することができる。外側紙層
の数が増す程、本発明の方法を利用することが有
利である。
内側層３は例えば内張りされたポリエチレン膜
及び（又は）内張りされたアルミフオイルを有し
ていてもよい。さらに内側層３を完全にポリエチ
レンから形成することも可能である。
閉鎖フラツプ４を外向きに旋回させることは折
り線５に沿つて行なわれる。閉鎖フラツプ４を外
側に旋回させることによつて内側層３は両側から
接近可能になり（第４図参照）、例えば加熱溶融
ジヨー１６によつて融着することができるように
なる。折り線５は袋の中央に向かう方向で見て融
着しようとする内側層３の縁６の後ろに位置して
いる。
第６図から第１０図までに示された実施例に於
ても側面に折畳線を有する袋は全部で３層、すな
わち２層の外側紙層１′と２′と１層の内側層３′
とから構成されている。内側層３′は完全に又は
部分的にポリエチレンから成つている。
閉鎖フラツプ４′を外側へ旋回させることは折
り線５′に沿つて行なわれる。閉鎖キヤツプ４′を
折り線５′に沿つて外側に旋回させることによつ
て内側層３′の端縁６′は熱を加えるために接近し
やすくなる。
ほぼ加熱棒１１と反射鏡１２とから成る赤外線
放熱器はエネルギを矢印１３の方向で内側層３′
の端縁６′に放熱する。この場合、２層の外側紙
層を備えた閉鎖フラツプ４′は第４図に示されて
いるように後方へ旋回させられている。保護シー
ルド１４は融着エネルギが内側層３′の端縁６′に
限られて加えられることを保証する。２つの圧着
機構１５と１６は相互に押し合わされ、融着エネ
ルギが圧着機構１５と１６から赤外線放熱器に向
かつて突出する範囲よりも大きな範囲に亙つて分
配されることを阻止する。熱の作用に際して圧着
機構１５と１６とに於ける融着過程が終了する。
圧着機構１５，１６は内側層３′の端縁６′の約
５mm〜10mm下に位置している。この内側層３′も
プラスチツクで内張された紙層として構成されて
いてもよい。
又、圧着機構１５，１６は必要な場合には多部
分から構成され、圧着ばねで圧着を行なうように
しておくこともできる。
【図面の簡単な説明】
図面は本発明の複数の実施例を示すものであつ
て、第１図は本発明による方法で加工しようとす
る、閉鎖フラツプを備えた、側面に折畳線を有す
る袋を示す斜視図、第２図は３層から成る、側面
に折畳線を有する袋の端部の概略的な側面図、第
３図は第２図に示された袋の平面図、第４図は閉
鎖フラツプが後方に旋回させられた袋の、第２図
に相当する側面図、第５図は閉鎖フラツプが後方
に旋回させられた袋の第３図に相応した平面図、
第６図は第１図に示されたような、側面に折畳線
を有する袋の斜視図、第７図は３層から成る、側
面に折畳線を有する袋の端部の概略的な側面、第
８図は第７図に示された袋の平面図、第９図は第
７図に示された袋と融着装置との概略的側面図、
第１０図は側方に旋回させられた閉鎖フラツプを
有する袋の平面図である。 １，２，１′，２′…外側紙層、３，３′…内側
層、４，４′…閉鎖フラツプ、５，５′…折り線、
６，６′…縁、１１…加熱棒、１２…反射鏡、１
３…矢印、１４…保護シールド、１５，１６…圧
着機構。

Claims (1)

  1. 【特許請求の範囲】 １ 融着可能な内側層又はこの内側層のうえに設
    けられた融着可能な内側被覆層と、段状になつた
    閉鎖フラツプとを有する多層の紙袋の内側層を融
    着する方法に於て、融着する前に紙袋の裏面に配
    置された閉鎖フラツプ４；４′を、袋の中央に向
    かう方向で見て、内側層３；３′の縁６；６′後ろ
    に位置している折り線５；５′を中心として旋回
    させて内側層３；３′から離反させ、閉鎖フラツ
    プ４；４′を旋回離反させた状態で露出した内側
    層３；３′に外部から熱を加えて互いに接触させ
    られた内側層を融着することを特徴とする、多層
    の紙袋の内側層を融着する方法。 ２ 内側層３′を融着するために必要な熱エネル
    ギを少なくともほぼ前方から内側層３′の端縁
    ６′に加える、特許請求の範囲第１項記載の方法。 ３ 折り線５′を内側層３′の端縁６′と少なくと
    もほぼ同一平面に配置する、特許請求の範囲第１
    項記載の方法。 ４ 内側層３′の端縁６′の範囲を圧着機構１５；
    １６を用いて融着過程の間相互に押し合わせてお
    く、特許請求の範囲第１項記載の方法。 ５ 融着に必要な熱エネルギを放熱量が紙袋の送
    り速度に関連して調整可能である赤外線放熱器に
    よつて加える、特許請求の範囲第１項記載の方
    法。
JP18060780A 1979-12-21 1980-12-22 Method of fusing inside layer of multilayer paper bag Granted JPS56127440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792951597 DE2951597A1 (de) 1979-12-21 1979-12-21 Verfahren zum verschweissen der innenlagen von mehrlagigen papiersaecken

Publications (2)

Publication Number Publication Date
JPS56127440A JPS56127440A (en) 1981-10-06
JPH026682B2 true JPH026682B2 (ja) 1990-02-13

Family

ID=6089184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18060780A Granted JPS56127440A (en) 1979-12-21 1980-12-22 Method of fusing inside layer of multilayer paper bag

Country Status (2)

Country Link
JP (1) JPS56127440A (ja)
DE (1) DE2951597A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04352899A (ja) * 1990-03-05 1992-12-07 Papierfabrik Oberschmitten Gmbh 多目的家事用紙
EP0724827A1 (en) 1995-01-31 1996-08-07 Nihon Tensaiseito Kabushiki Kaisha Continuously assembled pots for raising and transplanting seedlings

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167174A (ja) * 1982-03-29 1983-10-03 Pentel Kk 多色プリンタ
JPS58167175A (ja) * 1982-03-29 1983-10-03 Pentel Kk 多色プリンタ
DE3425608A1 (de) * 1984-07-12 1986-01-23 Icoma Packtechnik GmbH, 7590 Achern Verfahren zum herstellen von mehrlagigen papiersaecken mit gestaffelter verschlussklappe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04352899A (ja) * 1990-03-05 1992-12-07 Papierfabrik Oberschmitten Gmbh 多目的家事用紙
EP0724827A1 (en) 1995-01-31 1996-08-07 Nihon Tensaiseito Kabushiki Kaisha Continuously assembled pots for raising and transplanting seedlings

Also Published As

Publication number Publication date
DE2951597A1 (de) 1981-07-09
JPS56127440A (en) 1981-10-06

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