Process for preparing polyethylene terephthalate panel
A technology for producing polyethylene terephthalate and sheet metal, which is applied in the field of sheet metal processing and can solve the problems of excessively large diameter of pressing rollers and inability to heat
Inactive Publication Date: 2005-04-20
侯兴福
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Problems solved by technology
The main reason is that the diameter of the pressure roller is too large to make it recover to the temperature in a short time.
Method used
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[0014] Polyethylene terephthalate sheet production process,
[0015] a. The raw material is heated to 190--280°C by the extruder, and then sent to the three-roll calender by the die head;
[0016] b. Then cool the middle roll and lower roll of the three-roll calender to 20--65°C with water, and the diameter of the three rollers of the three-roll calender is 250--400CM;
[0017] c. Then heat the middle roll and the upper roll of the three-roll calender to 60--100°C for calendering and leveling;
[0018] d. Then sent to the traction cutting machine through the conveying roller to cut and shape into products.
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A process for producing polyethylene terephthalate plate is that, 1, the raw material is heated to 190-280 degree centigrade by extruder, then fed to three-roller calender by die head, 2, cooled to 20-65 degree centigrade by three-roller calender, 3, heated to 60-100 degree centigrade by three-roller calender, 4, sent to drawing-cutting machine by conveying roller and cut into finish products. The qualified PET plate material can be made without any roll sticking by said invention.
Description
technical field [0001] The invention relates to the technical field of plate processing, and more specifically relates to a production process of a polyethylene terephthalate resin plate. Background technique [0002] The production process of general boards (referring to PC boards or PMMA boards) is: as shown in Figure 1, they are all processed and produced on plastic board production machines. 4. Composition of 5 traction cutting machines. It is heated from the extruder 1 to 210--280°C, and then sent to the three-roll calender through the die head 2. The middle roll 21 and the lower roll 23 of the three-roll calender are heated to 90--110°C, and then Calendering and cooling at 70--100°C by the middle roll 21 and the upper roll 22 of the three-roll calender. Send to traction cutting machine 5 to cut and form into the product through conveying roller 4 again. Its three pressure rollers 21, 22, 23 are generally 400-500cm in diameter and the axes of the three rollers are in...
Claims
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IPC IPC(8): B29C47/00B29C59/02
Inventor 侯兴福
Owner 侯兴福