Imidization method and imidization equipment of polyimide film
A polyimide film and imidization technology, which is applied in the field of polyimide film imidization method and imidization equipment, can solve the problems of difficult configuration and equipment investment cost increase, and achieve film quality improvement, Reduced investment costs and high thermal efficiency
Active Publication Date: 2011-12-28
GUILIN ELECTRICAL EQUIP SCI RES INST
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Problems solved by technology
The comprehensive mechanical properties of the polyimide film produced by this imidization method and imidization equipment are obviously improved, but the investment cost of the equipment is greatly increased, and only one set of longitudinal stretching device needs 1.5 million to 2 million yuan.
Generally small and medium enterprises are difficult to configure
Method used
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Embodiment Construction
[0013] The embodiment of the imidization method of the polyimide film of the present invention is as follows: the salivation film stripped off from the salivation unit is subjected to high-temperature imidization treatment under tension, and the film is horizontally and vertically imidized during the imidization treatment. are under tension.
[0014] Examples of imidization equipment for this polyimide film figure 1 and 2 As shown, it includes an imidization furnace 6, a front adjustment roller 1 and a rear adjustment roller 8 arranged parallel to the entrance and exit, the heating device above and below the film 2 in the furnace is a far-infrared heater 7, and after the rear adjustment roller 8 is Winding roller 9, film 2 enters into the imidization furnace 6 through the front adjustment roller 1, and the film 2 is taken up on the winding roller 9 through the rear adjustment roller 8 at the exit. The tensioning device is two rows of chain clips 4 symmetrically installed on ...
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The invention relates to an imidization method and an imidization device of a polyimide film, and the method is to carry out the imidization treatment under the state of tensioning both the longitudinal and transverse directions of the cast film. This equipment has a tensioning device in the imidization furnace. The tensioning device is two symmetrically installed chain clips or pins and chain sprockets on the track. The track is parallel to the two sides of the film in the furnace. The pin enters the sprocket along the track and wraps around from the outlet to the inlet. The chain clip or pin is connected to the chain, and the chain is engaged with the sprocket located at the entrance and exit. The chain clips or pins move in a circular motion. At the entrance of the furnace, the chain clips or pins close and clamp both sides of the film; at the furnace exit, the chain clips or pins are automatically opened, and the tensioning device releases the film, and the chain clips or pins automatically open. Return to the entrance of the imidization furnace along the track. During the heat treatment in the furnace, the film is kept in a tension state in both longitudinal and transverse directions, and the width of the film during the imidization process is kept unchanged, which improves the comprehensive mechanical properties of the film, such as longitudinal and transverse tensile strength and elongation at break.
Description
(1) Technical field [0001] The invention relates to a polyimide film production technology, in particular to a polyimide film imidization method and imidization equipment. (2) Background technology [0002] The traditional polyimide film imidization method is to send the salivating film stripped off from the salivating machine directly into the imidization furnace for high-temperature thermal imidization treatment. The imidization equipment is an imidization furnace with several parallel series of rollers inside. The film enters the imidization furnace and is wound on the series of rollers in the furnace. After the high temperature heat treatment in the imidization furnace, the product is wound on the On the winding roll at the outlet of the amination furnace. With this imidization method and imidization equipment, when the salivation film is subjected to high-temperature imidization treatment, although it is stretched longitudinally, it will shrink laterally and reduce the...
Claims
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IPC IPC(8): C08J7/12C08L79/08
Inventor 李耀星王礼
Owner GUILIN ELECTRICAL EQUIP SCI RES INST