ES369738A1 - Method of heating moulds for thermoplastics materials and moulds for carrying out the method - Google Patents

Method of heating moulds for thermoplastics materials and moulds for carrying out the method

Info

Publication number
ES369738A1
ES369738A1 ES369738A ES369738A ES369738A1 ES 369738 A1 ES369738 A1 ES 369738A1 ES 369738 A ES369738 A ES 369738A ES 369738 A ES369738 A ES 369738A ES 369738 A1 ES369738 A1 ES 369738A1
Authority
ES
Spain
Prior art keywords
cavity
moulds
mould
parts
carrying
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
ES369738A
Other languages
Spanish (es)
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.)
Cebal GP
Original Assignee
Cebal GP
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 Cebal GP filed Critical Cebal GP
Publication of ES369738A1 publication Critical patent/ES369738A1/en
Expired 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/06—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

In order that heat may be generated in the vicinity of the walls surrounding the mould cavity 3 of a two part metal mould 1, 2, which parts are electrically insulated from one another at their adjacent faces 11 and 21, the parts are electrically interconnected by a conductor 40 at one end and are provided with separate terminals 41, 42 at the opposite end, the terminals 41 and 42 are connected separately to the poles of a high frequency source. The use of high frequency and the mutual inductance of the parts 1, 2 of the mould confines the resistance heating path to the walls of the cavity 3 immediately adjacent the cavity. Thermoplastic material may be moulded in the cavity or a blank may be placed in the cavity. The mould may be made of magnetic or non-magnetic stainless steel. The frequency of the source may be from 100KHz-10MHz.
ES369738A 1968-07-23 1969-07-22 Method of heating moulds for thermoplastics materials and moulds for carrying out the method Expired ES369738A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR160223 1968-07-23

Publications (1)

Publication Number Publication Date
ES369738A1 true ES369738A1 (en) 1971-06-16

Family

ID=8652917

Family Applications (1)

Application Number Title Priority Date Filing Date
ES369738A Expired ES369738A1 (en) 1968-07-23 1969-07-22 Method of heating moulds for thermoplastics materials and moulds for carrying out the method

Country Status (14)

Country Link
JP (1) JPS4812056B1 (en)
AT (1) AT301159B (en)
BE (1) BE736393A (en)
CH (1) CH498699A (en)
DK (1) DK122111B (en)
ES (1) ES369738A1 (en)
FI (1) FI48326C (en)
FR (1) FR1580529A (en)
GB (1) GB1242964A (en)
IL (1) IL32668A (en)
LU (1) LU59137A1 (en)
NL (1) NL6911235A (en)
OA (1) OA03100A (en)
SE (1) SE356248B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488185A1 (en) * 1980-08-07 1982-02-12 Asahi Dow Ltd Injection moulded reinforced or filled thermoplastic resin articles - given high surface gloss by selectively heating mould inner surface
US4340551A (en) 1980-08-11 1982-07-20 Asahi-Dow Limited Injection molded articles with improved surface characteristics, production of same and apparatus therefor
US4573514A (en) * 1982-05-21 1986-03-04 Gnb Batteries Inc. Electrically heatable mold and method of casting metal straps
AT383775B (en) * 1985-01-17 1987-08-25 Naue & Naue Ges M B H Und Co DEVICE FOR PRODUCING MOLDED BODIES

Also Published As

Publication number Publication date
DE1937220B2 (en) 1975-07-03
SE356248B (en) 1973-05-21
GB1242964A (en) 1971-08-18
AT301159B (en) 1972-08-25
FR1580529A (en) 1969-09-05
FI48326B (en) 1974-05-31
LU59137A1 (en) 1970-01-22
NL6911235A (en) 1970-01-27
DE1937220A1 (en) 1970-02-19
IL32668A (en) 1972-09-28
BE736393A (en) 1970-01-22
IL32668A0 (en) 1969-09-25
DK122111B (en) 1972-01-24
FI48326C (en) 1974-09-10
OA03100A (en) 1970-12-15
CH498699A (en) 1970-11-15
JPS4812056B1 (en) 1973-04-18

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