A new expanded polytetrafluoroethylene composite film and its preparation method
A polytetrafluoroethylene and composite film technology, applied in the field of plastic processing, can solve the problems of long time consumption, low production efficiency, uncontrollable composite film density, etc., and achieve the effect of smooth surface, time saving and production efficiency improvement.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0028] The present embodiment provides a kind of preparation method of expanded polytetrafluoroethylene composite film, comprising:
[0029] ① Dispersed polytetrafluoroethylene resin is made into a calendered film by paste molding method, and expanded polytetrafluoroethylene film is obtained by biaxial stretching, and the thickness of the film is 0.05±0.02mm.
[0030] ② Roll the prepared film onto the laminating roller through the laminating unit. The film rolling speed is 5 turns / min, the pressure is 0.30MPa, and the winding thickness is 3.0-3.4mm. Fix the film at both ends of the laminating roller, and then put the roller cartridge removed.
[0031] ③Heat treatment is carried out on the film-coated roller coated with the film in a salt bath furnace, the heat treatment temperature is 370°C, and the treatment time is 2 hours.
[0032] ④ Remove the roller after heat treatment. When the temperature of the inner wall of the roller drops to 300°C, put the roller into the water po...
Embodiment 2
[0036] The present embodiment provides a kind of preparation method of expanded polytetrafluoroethylene composite film, comprising:
[0037] ① Dispersed polytetrafluoroethylene resin is made into a calendered film by paste molding method, and expanded polytetrafluoroethylene film is obtained by biaxial stretching, and the thickness of the film is 0.05±0.02mm.
[0038] ② Roll the prepared film onto the laminating roller through the laminating unit, the film rolling speed is 5 laps / min, the pressure is 0.30MPa, the thickness of the film is 3.0-3.4mm, fix the film at both ends of the laminating roller, and then roll the roller cartridge removed.
[0039] ③The film-coated roller is heat-treated in a salt-bath furnace at a temperature of 370°C for 2 hours. After heat treatment, it is naturally cooled at room temperature.
[0040] ④Remove the roller after heat treatment. When the temperature of the inner wall of the roller drops to 280°C, put the roller into the water pool, and rem...
Embodiment 3
[0044] The present embodiment provides a kind of preparation method of expanded polytetrafluoroethylene composite film, comprising:
[0045] ① Dispersed polytetrafluoroethylene resin is made into calendered film by paste molding method, and expanded polytetrafluoroethylene film is obtained by biaxial stretching, with a film thickness of 0.05±0.02mm.
[0046] ② Roll the prepared film onto the laminating roller through the laminating unit, the film rolling speed is 5 laps / min, the pressure is 0.30MPa, the thickness of the film is 3.0-3.4mm, fix the film at both ends of the laminating roller, and then roll the roller cartridge removed.
[0047] ③The film-coated roller is heat-treated in a salt-bath furnace at a temperature of 370°C for 2 hours. After heat treatment, it is naturally cooled at room temperature.
[0048] ④Remove the roller after heat treatment. When the temperature of the inner wall of the roller drops to 260°C, put the roller into the water pool, and remove it aft...
PUM
Property | Measurement | Unit |
---|---|---|
thickness | aaaaa | aaaaa |
density | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com