JPS6311987B2 - - Google Patents

Info

Publication number
JPS6311987B2
JPS6311987B2 JP20815683A JP20815683A JPS6311987B2 JP S6311987 B2 JPS6311987 B2 JP S6311987B2 JP 20815683 A JP20815683 A JP 20815683A JP 20815683 A JP20815683 A JP 20815683A JP S6311987 B2 JPS6311987 B2 JP S6311987B2
Authority
JP
Japan
Prior art keywords
heat
resin
vinyl chloride
cardboard
chloride 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.)
Expired
Application number
JP20815683A
Other languages
English (en)
Other versions
JPS60125638A (ja
Inventor
Yoshiharu Kono
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.)
KONO PURASUCHITSUKU KOGYO KK
Original Assignee
KONO PURASUCHITSUKU KOGYO KK
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 KONO PURASUCHITSUKU KOGYO KK filed Critical KONO PURASUCHITSUKU KOGYO KK
Priority to JP58208156A priority Critical patent/JPS60125638A/ja
Publication of JPS60125638A publication Critical patent/JPS60125638A/ja
Publication of JPS6311987B2 publication Critical patent/JPS6311987B2/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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • 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
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • 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
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • 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
    • B29C66/9141—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 temperature
    • B29C66/91411—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 temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • 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
    • B29C66/91641—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 the heat or the thermal flux being non-constant over time
    • B29C66/91643—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 the heat or the thermal flux being non-constant over time following a heat-time profile
    • B29C66/91645—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 the heat or the thermal flux being non-constant over time following a heat-time profile by steps
    • 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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C2793/0045—Perforating
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/328—Leaving the burrs unchanged for providing particular properties to the joint, e.g. as decorative effect
    • B29C66/3282—Leaving the burrs unchanged for providing particular properties to the joint, e.g. as decorative effect for reinforcing the joint
    • 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
    • B29C66/71—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 composition of the plastics material of the parts to be joined
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 本発明は特にバインダー、フアイルなどの表紙
として用いるのに好適な樹脂被覆紙の新規な製造
方法に関する。
バインダーやフアイルなどの表紙には、ボール
紙などの厚紙を塩化ビニル樹脂シートで被覆した
樹脂被覆紙が使用されている。
従来、この樹脂被覆紙は第６〜７図に示すよう
に、厚紙１の上下両面に塩化ビニル樹脂シート
２，３を配置して、下型１１上に載置し、上方か
ら上型１２を降下させて上型１２端部に設けた電
極１３により塩化ビニル樹脂シート２，３の周縁
部２１，３１を熱融着することによつてつくられ
ていた。
この方法による場合、熱融着時、電極１３が当
接した部分は、シート２，３の接合面から樹脂が
溶融し、電極１３によつて押圧されるため、溶融
した樹脂の一部は樹脂被覆紙の内部側、すなわち
厚紙１の配置されている側に流動する。しかしな
がら、熱融着部の近辺は室温より若干高くなつて
いる程度で、流動してきた樹脂と融着できる程度
には温度が上昇しておらず、そのため、第７図に
示すように、流動してきた樹脂３２はそのままの
状態で冷却して塊となり、熱融着部２３の近辺２
１ａ，３１ａの内面側とは遊離した状態になつて
いる。
ところで、このような用途に使用されている塩
化ビニル樹脂シートは、以前は0.3〜0.4mm程度の
厚さのものが使用されていたが、最近はコスト面
などの関係から、0.05〜0.2mm程度の非常に薄い
ものになつてきており、しかも前記熱融着時に、
熱融着部２３の近辺２１ａ，３１ａ、特に近辺２
１ａが熱融着部２３側に引つ張られて厚さがさら
に薄くなるため、強度が低く、熱融着部２３の近
辺２１ａから破れを生じることがしばしば発生し
た。
本発明者はそのような事情に鑑み種々研究を重
ねた結果、厚紙の両面に配置した塩化ビニル樹脂
シートの周縁部を熱融着して樹脂被覆紙を製造す
るにあたり、該熱融着部の内周側近辺を予備加熱
するときは、熱融着時に熱融着部の近辺が熱融着
部側に引つ張られて薄くなるのが防止され、かつ
熱融着部から流動してきた樹脂が該熱融着部の近
辺の内面に融着し、その部分の肉厚が厚くなつ
て、強度が増し、前述のような熱融着部近辺の破
れが防止されることを見出し、本発明を完成する
にいたつた。
本発明において、予備加熱は熱融着する部分の
内周側近辺の樹脂温度が70〜90℃となるように行
なうのが好ましい。これは樹脂温度が70℃未満で
は熱融着部から流動してきた樹脂との融着が充分
に行なわれず、また90℃を超えると塩化ビニル樹
脂シートが軟化して塩化ビニル樹脂シートに施し
てあるエンボス加工が崩れてしまうからである。
予備加熱時間は、加熱温度や塩化ビニル樹脂シ
ートの厚み、さらには塩化ビニル樹脂シートに上
下面から加熱するか、あるいは片面から加熱する
かなどによつても異なるが、通常は４〜15秒間と
するのが好ましい。
予備加熱の実施にあたつては、上面側からのみ
加熱するのが、現有設備との関係上実施しやす
く、また予備加熱用のヒータを直接塩化ビニル樹
脂シートに当接して加熱するよりも、塩化ビニル
樹脂シートから若干離して空気を介して加熱する
方が全体の温度が均一になりやすいので好まし
い。
予備加熱は熱融着する部分の内周側近辺のみ加
熱すれば目的を達し得るが、実施に際しては、前
記のようにヒータを塩化ビニル樹脂シートから若
干離れた位置に配置して加熱するなどの関係もあ
つて、熱融着する部分の内周側近辺のみ選択的に
予備加熱することがむずかしく、該部分とともに
熱融着する部分も同時に予備加熱する方法が採用
される。ただし、熱融着する部分の内周側近辺の
み予備加熱してもよいことはもちろんである。な
お、予備加熱は多少幅広く行なつても実害がない
のと安全性を考慮して通常、熱融着する部分から
内周側へ５〜30mm程度入つたところまで行なわれ
る。
次に本発明の実施例を図面とともに説明する。
まず、本発明に係る樹脂被覆紙についてさきに
説明する。
第１図は本発明によつて製造された樹脂被覆紙
の一例を示す断面図で、図中、１は厚紙で、本実
施例では厚さ２mmのボール紙が使用されている。
２，３は厚紙１の両面に配置した塩化ビニル樹脂
シートで、この塩化ビニル樹脂シート２，３は厚
紙１より若干大きく、その周縁部２１，３１が厚
紙１の端部より外方に突出しており、塩化ビニル
樹脂シート２，３の周縁部における接合部が高周
波加熱によつて熱融着され、厚紙１を塩化ビニル
樹脂シート２，３で被覆して樹脂被覆紙がつくら
れている。なお、本実施例において、上側の塩化
ビニル樹脂シート２には厚さ0.15mmのものが使用
され、下側の塩化ビニル樹脂シート３には厚さ
0.2mmのものが使用されている。
この樹脂被覆紙の端部は、第２図に示すよう
に、熱融着部２３の内周側近辺２１ａ，３１ａに
おいて、熱融着時に熱融着部２３から流動してき
た樹脂３２が熱融着部の近辺２１ａ，３１ａの内
面と融着し、その部分の厚みが融着前より厚くな
つている。
つぎに上記樹脂被覆紙の製造方法を第３〜５図
に基づいて詳述する。
まず厚紙１の両面にたとえば酢酸ビニル系の接
着剤を塗布し、該接着剤を介して厚紙１の両面に
塩化ビニル樹脂シート２，３を配置したのち、ロ
ーラーなどで厚紙１と塩化ビニル樹脂シート２，
３とを圧着する。この状態で乾燥したのち、第３
図に示すように下型１１上に移し、予備加熱用ヒ
ータ１４で塩化ビニル樹脂シート２の上方から塩
化ビニル樹脂シート２，３の周縁部の熱融着する
部分およびその内周側近辺（熱融着する部分から
約10mm内周側のところまで）を予備加熱する。
予備加熱には200V、800Wのヒータ１４を用
い、塩化ビニル樹脂シート２の上方約５cmの位置
から約８秒間加熱する。これによつて塩化ビニル
樹脂シート２，３の予備加熱された部分は温度が
80〜90℃に上昇する。
つぎに、ヒータ１４を引き上げ、第４〜５図に
示すように上方より上型１２を下降させ、上側の
塩化ビニル樹脂シート２、厚紙１、下側の塩化ビ
ニル樹脂シート３を圧着しつつ、上型１２の端部
に設けた電極１３で、塩化ビニル樹脂シート２，
３の周縁部の熱融着する部分を下型１１側に押圧
しながら高周波加熱により熱融着する。
上記のように、塩化ビニル樹脂シート２，３の
周縁部を熱融着するに際し、熱融着する部分およ
びその内周側近辺を予備加熱することにより、予
備加熱された部分が収縮して厚みを増し引つ張り
がかかつても元の厚さより薄くなることがなくな
るため、従来法による場合のような熱融着時に熱
融着部の近辺が熱融着部側に引つ張られて薄くな
ることがなくなり、また熱融着時に熱融着部から
流動してきた樹脂３２は第２図および第５図に示
すように熱融着部２３の内周側近辺２１ａ，３１
ａの内面と融着し、該部分の厚みを増加させ、強
度を増加させるので、得られた樹脂被覆紙は熱融
着部近辺の破損がない耐久性に優れたものとな
る。
なお、図中、１５は上型１２の下面に形成した
針で、この針１５によつて塩化ビニル樹脂シート
２を突き通し、その微孔から接着剤塗布時に厚紙
１中に泌み込んだ水分を逃がすために設けられた
ものである。なお、微孔は針１５を抜き出したあ
とは、収縮して非常に小さくなり、ほとんど見え
なくなり、また塩化ビニル樹脂シート２の強度を
低下させるようなこともない。
なお実施例では厚紙としてボール紙を用いた
が、それに限られることなく、ボール紙以外の板
紙やその他の厚手の紙であつてもよい。
本発明により製造される樹脂被覆紙は、バイン
ダー、フアイルなどの表紙用として特に好適であ
るが、カバン、バツクなどの小型の包装ケースの
構成材料としても好適に使用され得る。
【図面の簡単な説明】
第１図は本発明に係る樹脂被覆紙の一例を示す
断面図で、第２図は第１図の部分拡大図である。
第３〜５図は本発明により樹脂被覆紙を製造する
際の部分拡大断面図であり、第６〜７図は従来法
により樹脂被覆紙を製造する際の部分拡大断面図
である。 １……厚紙、２，３……塩化ビニル樹脂シー
ト、２１，３１……塩化ビニル樹脂シートの周縁
部、２３……熱融着部、２１ａ，３１ａ……熱融
着部の内周側近辺、１４……予備加熱用ヒータ。

Claims (1)

  1. 【特許請求の範囲】 １ 厚紙の両面に、該厚紙より若干大きく周縁部
    が厚紙の外方へ突出した塩化ビニル樹脂シートを
    配置し、塩化ビニル樹脂シートの周縁部を熱融着
    して樹脂被覆紙を製造するにあたり、該熱融着す
    る部分の内周側近辺を予備加熱することを特徴と
    する樹脂被覆紙の製造方法。 ２ 熱融着する部分の内周側近辺の樹脂温度が70
    〜90℃になるように予備加熱する特許請求の範囲
    第１項記載の樹脂被覆紙の製造方法。
JP58208156A 1983-11-04 1983-11-04 樹脂被覆紙の製造方法 Granted JPS60125638A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58208156A JPS60125638A (ja) 1983-11-04 1983-11-04 樹脂被覆紙の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58208156A JPS60125638A (ja) 1983-11-04 1983-11-04 樹脂被覆紙の製造方法

Publications (2)

Publication Number Publication Date
JPS60125638A JPS60125638A (ja) 1985-07-04
JPS6311987B2 true JPS6311987B2 (ja) 1988-03-16

Family

ID=16551573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58208156A Granted JPS60125638A (ja) 1983-11-04 1983-11-04 樹脂被覆紙の製造方法

Country Status (1)

Country Link
JP (1) JPS60125638A (ja)

Also Published As

Publication number Publication date
JPS60125638A (ja) 1985-07-04

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