GB1242510A - Thermoforming of thermoplastic polymers - Google Patents

Thermoforming of thermoplastic polymers

Info

Publication number
GB1242510A
GB1242510A GB350571A GB350571A GB1242510A GB 1242510 A GB1242510 A GB 1242510A GB 350571 A GB350571 A GB 350571A GB 350571 A GB350571 A GB 350571A GB 1242510 A GB1242510 A GB 1242510A
Authority
GB
United Kingdom
Prior art keywords
sheeting
thermoforming
dissipation factor
belts
thermoplastic
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
GB350571A
Inventor
Conrad Goldman
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB350571A priority Critical patent/GB1242510A/en
Publication of GB1242510A publication Critical patent/GB1242510A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/46—Dielectric heating
    • H05B6/60—Arrangements for continuous movement of material

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

1,242,510. Heating sheet material before thermoforming. C. GOLDMAN. 13 May, 1968 [25 Jan., 1968], No. 3505/71. Divided out of 1,238,881. Heading B5A. [Also in Division H5] Thermoplastic sheeting 13 is heated prior to thermoforming by conduction and radiation from one or more transport belts 11, 12, of high dissipation factor which are heated by an RF field on passage between or over dielectric heating electrodes. The process is mainly for heating thermoplastic sheeting of low dissipation factor, but mention is made of sheeting 13 of high dissipation factor being provided with the belts 11, 12, which then minimize or elimin. ate heat losses from sheeting 13 by conduction or radiation. The belt or belts have release properties in respect of the thermoplastic material. The sheeting may follow a sinuous path, Fig. 2 (not shown), or a curved path Fig. 3 (not shown) through the apparatus. Specification 1,238,881 is referred to.
GB350571A 1968-01-25 1968-01-25 Thermoforming of thermoplastic polymers Expired GB1242510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB350571A GB1242510A (en) 1968-01-25 1968-01-25 Thermoforming of thermoplastic polymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB350571A GB1242510A (en) 1968-01-25 1968-01-25 Thermoforming of thermoplastic polymers

Publications (1)

Publication Number Publication Date
GB1242510A true GB1242510A (en) 1971-08-11

Family

ID=9759609

Family Applications (1)

Application Number Title Priority Date Filing Date
GB350571A Expired GB1242510A (en) 1968-01-25 1968-01-25 Thermoforming of thermoplastic polymers

Country Status (1)

Country Link
GB (1) GB1242510A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288399A (en) 1977-08-17 1981-09-08 Phillips Petroleum Company Process for low pressure molding thermoplastic elastomer compositions
EP0229708A2 (en) * 1986-01-16 1987-07-22 Micro Denshi Co. Ltd. Microwave heating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288399A (en) 1977-08-17 1981-09-08 Phillips Petroleum Company Process for low pressure molding thermoplastic elastomer compositions
EP0229708A2 (en) * 1986-01-16 1987-07-22 Micro Denshi Co. Ltd. Microwave heating device
EP0229708A3 (en) * 1986-01-16 1988-02-10 Micro Denshi Kk Microwave heating device

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