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626 results about "Roll film" patented technology

Rollfilm or roll film is any type of spool-wound photographic film protected from white light exposure by a paper backing, as opposed to film which is protected from exposure and wound forward in a cartridge. The term originated in contrast to sheet film. Confusingly, roll film was originally often referred to as "cartridge" film because of its resemblance to a shotgun cartridge.

Device and method for processing polymer film surface microstructure based on roll-to-roll hot rolling

The invention relates to device and method for processing a polymer film surface microstructure based on roll-to-roll hot rolling. The method comprises the following six steps: unrolling, pre-heating, hot-rolling, conforming, cooling and rolling. The unrolling step includes continuously drawing a polymer film from a rolled material and removing static electricity on the surface of the film. After the pre-heating step, the polymer film is heated to a temperature below the glass transition temperature thereof to get ready for the hot-rolling step. The local heating treatment is conducted on a plate roller to allow only the temperature of the stamping surface to rise above the glass transition temperature, so as to roll-form the preheated film. The conforming step enables the rolled film in close contact with the surface of the plate roller, so that the film is completely deformed. The formed film is subjected to both cooling and conforming to cause rapid curing of the surface microstructure and reduce rebound. Compared with the prior art, the device and method have the advantages of reducing the risk of rebound and deformation, improving the forming precision of the microstructure, making demoulding easier and increasing the processing efficiency.
Owner:SHANGHAI JIAO TONG UNIV

Film sticking machine

The invention relates to the technical field of battery film sticking, and provides a film sticking machine. The film sticking machine comprises a base plate for placing a workpiece waiting for film sticking and a film shaft for mounting a rolled film, wherein the surface of the base plate is provided with a transverse direction and a longitudinal direction which are vertical to each other. The film sticking machine also comprises a film pulling device, a film cutting device and a film sticking device which are mounted on the base plate. The film pulling device is used for picking up the film edge of the rolled film, and the film is pulled by a preset distance along the direction parallel to the transverse direction; the film cutting device is used for clamping the film after the film is pulled by the film pulling device for the preset distance and cutting the film positioned between the film pulling device and the film cutting device; and the film sticking device is used for adhering the film positioned between the film pulling device and the film cutting device onto the workpiece waiting for film sticking. Compared with the prior art, the film sticking machine provided by the invention realizes automatic film sticking on the surface of the workpiece waiting film sticking, so that the labor intensity is reduced, the capacity is high, the production efficiency is high, the yield of film sticking finished products can be effectively improved, and the production quality is guaranteed.
Owner:SHENZHEN YUCHEN AUTOMATION EQUIP CO LTD
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