Stripping device of bonding filmstrip and method thereof
A technology for film and film, which is applied to container discharge methods, chemical instruments and methods, photography, etc., can solve problems such as no non-destructive peeling method of adhesive film, which has not been reported, and achieve the effect of ensuring airtightness
Active Publication Date: 2018-07-27
SHAANXI NORMAL UNIV
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There is no report on the non-destructive removal method of bonded film
Method used
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[0043] The present invention will be further described in detail below in conjunction with specific embodiments, which are for explanation rather than limitation of the present invention.
[0044] Such as figure 1 with figure 2 As shown, a peeling device for bonded motion picture film includes a pressurizing device 1, a peeling device 2 and a liquid nitrogen storage device 3; the pressurizing device 1 and the liquid nitrogen storage device 3 are connected for storing liquid nitrogen The device 3 provides pressure; the liquid nitrogen storage device 3 is connected to the stripping device 2 to provide liquid nitrogen for the stripping device 2; the stripping device 2 is provided with a film accommodating cavity for placing the film to be stripped, and the pressure device 1 Pressurize the liquid nitrogen storage device 3 so that the liquid nitrogen enters the film containing cavity.
[0045] Such as image 3 As shown, the pressurizing device 1 includes a pressurizing pump 11, a press...
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The invention discloses a stripping device of a bonding filmstrip and a method thereof, and belongs to the technical field of image file protection and restoration. The device comprises a pressurizingdevice, a stripping device and a liquid nitrogen storage device; the pressurizing device is connected with the liquid nitrogen storage device and used for providing pressure for the liquid nitrogen storage device; the liquid nitrogen storage device is connected with the stripping device and used for providing liquid nitrogen for the stripping device; a film holding cavity is arranged in the stripping device and used for placing to-be-stripped film; the pressurizing device is used for pressurizing the liquid nitrogen storage device, thereby enabling the liquid nitrogen to enter the film holding cavity; under the low temperature environment, the film substrate of the roll film and an emulsion layer in bonding can produce micropore and crack due to the difference produced by the expansion coefficient of the film substrate and the image layer; the liquid nitrogen permeates into the micropore and crack of the bonding roll film, the viscosity of the liquefied gelatin is reduced at low temperature due to a certain tension produced in the gasification process, the aim of stripping is achieved; the whole stripping process does not damage the pH, size stability and mechanical performance ofthe roll film, and the non-destructive stripping can be achieved.
Description
Technical field [0001] The invention relates to the technical field of image file protection and restoration, in particular to an uncovering device and method for bonding motion picture film. Background technique [0002] The current acidification of cellulose acetate motion picture film is accompanied by "acetic acid syndrome" and is a worldwide problem. At least one third of the cellulose acetate films in the world's collections are acidified and bonded due to acetic acid syndrome. The rest of the cellulose acetate film films are facing a similar fate. After acidification and hardening, the macroscopic appearance of the entire film roll is mainly as a pungent acetic acid smell, white crystals precipitate on the surface of the film, the film is distorted and deformed, the mechanical strength is reduced, the bonding force between the image layer and the base layer is reduced, and it is easy to fall off. The whole disc is glued into blocks, and finally the image information disap...
Claims
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IPC IPC(8): G03D15/00
CPCG03D15/00Y10T156/1911Y10T156/1928Y10T156/1111Y10T156/1126Y10T156/1153G03F7/343B32B2310/0427B32B43/006F17C7/04
Inventor 李玉虎贾智慧晁小练
Owner SHAANXI NORMAL UNIV