JPS55166218A - Heater for plastic film - Google Patents
Heater for plastic filmInfo
- 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
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
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) |
-
1979
- 1979-06-13 JP JP7509879A patent/JPS55166218A/en active Pending
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