Requirements of LAUFFER Laminator for Kraft Paper
2017-12-25 13:53
Hot-pressed kraft paper for LAUFFER laminator is made of pure wood pulp processed by special technology. It is mainly used in the pressing process of PCB, CCL and FPC for heat transfer, buffer, decompression and heat preservation.
When LAUFFER laminator multi-layer board or substrate board is pressed (laminated), kraft paper is mostly used as heat transfer buffer. It is placed between the hot plate (Platern) of the press and the steel plate to ease the temperature rise curve closest to the bulk material. Make multiple sheets to be pressed between the substrates or multi-layer plates. Try to close the temperature difference of each layer of the plate, the general common specification is 90 pounds to 150 pounds. Since the fibers in the paper have been broken after high temperature and high pressure, they no longer have toughness and are difficult to function, so they must try to replace them with new ones. This kind of kraft paper is to boil the mixed solution of pine wood and various strong alkalis, and then wash and precipitate after its volatiles escape and remove acids. After it becomes pulp, it can be pressed again to become rough and cheap paper.
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