JPS55166218A - Heater for plastic film - Google Patents

Heater for plastic film

Info

Publication number
JPS55166218A
JPS55166218A JP7509879A JP7509879A JPS55166218A JP S55166218 A JPS55166218 A JP S55166218A JP 7509879 A JP7509879 A JP 7509879A JP 7509879 A JP7509879 A JP 7509879A JP S55166218 A JPS55166218 A JP S55166218A
Authority
JP
Japan
Prior art keywords
film
heater
air blowing
hollow box
blowing port
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.)
Pending
Application number
JP7509879A
Other languages
Japanese (ja)
Inventor
Takaaki Ogawa
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 JP7509879A priority Critical patent/JPS55166218A/en
Publication of JPS55166218A publication Critical patent/JPS55166218A/en
Pending legal-status Critical Current

Links

Landscapes

  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain a heater safe and capable of conserving energy as well as effecting forming of a plastic film easily and surely by a method wherein an air blowing port is provided at a portion of a hollow box and a plurality of semiconductor heaters are provided on a lower surface thereof.
CONSTITUTION: An air blowing port 3 is provided at an upper center of a hollow box 2 and a commutating plate 4 is provided at an immediately inner side of the air blowing port 3. A multitude of semiconductor heaters 5 are attached to a lower surface of the hollow box 2. The semiconductor heater of a PTC ceramics, having a positive resistance temperature coefficient and formed into a honeycomb structure, is suitable for this purpose and when air is passed therethrough, the heater can be heated. Upon heating and forming a film, the film 9 is fixed to a frame-like holding frame 10 and is set at a lower side of a space frame 7, thereafter, hot wind is blown on the film, thereby, the film is heated and formed.
COPYRIGHT: (C)1980,JPO&Japio
JP7509879A 1979-06-13 1979-06-13 Heater for plastic film Pending JPS55166218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7509879A JPS55166218A (en) 1979-06-13 1979-06-13 Heater for plastic film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7509879A JPS55166218A (en) 1979-06-13 1979-06-13 Heater for plastic film

Publications (1)

Publication Number Publication Date
JPS55166218A true JPS55166218A (en) 1980-12-25

Family

ID=13566349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7509879A Pending JPS55166218A (en) 1979-06-13 1979-06-13 Heater for plastic film

Country Status (1)

Country Link
JP (1) JPS55166218A (en)

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