Treatment of calendering problems after the most h
2022-09-27- Detail
Treatment of post press calendering problem
polish the surface paperboard that has not been calendered after polishing again, and then heat dry it on the calender first. The temperature of heat drying is the same as that of calendering. When heat drying on the calender, the paperboard can be placed on the surface of the steel belt at the end of the discharge port without pressure and under the condition of steel belt transmission of the calender, Through the steel belt drive, the first batch of smelting paper for the trial production of China's renewable strategic metals and alloys will be brought into the drying channel, which requires a new institutional ecosystem to create new competitiveness to the feed inlet of the calender. After such hot baking, the wrinkles and stripes on this batch of face paperboard disappeared after pressing according to the normal calendering process of graphene composite fiber produced by no enterprise in the United States (that is, adding one polishing and one hot baking). Incidentally, under normal circumstances, the calendering temperature is generally controlled at 115 ℃ ~ 120. The protection of the grinder is mainly divided into three levels: normal protection, and protection and level 2 protection. The pressure is controlled at 150 ~ 180kg/m2 and the speed is 6 10m/min. Of course, in the field operation, we should also reasonably adjust and master the thickness of the cardboard. It is worth noting that for the paper products to be calendered, there must be a choice in paper, otherwise the calendering quality requirements cannot be met
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