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    防火板在生产中易出现的问题有哪些?

    来源:https://www.fumeijia.net/ 日期:2022-04-08 发布人:admin
      
      板面局部有白花
      产生原因:表层纸含胶量不足或干燥中局部树脂固化;表层纸挥发物含量过低;热压式压力不均匀;忖垫材料无弹性;不锈钢板表明不平;树脂反应过老,分子太大,树脂流动性大。
      解决方法:提高表层纸树脂含量或控制干燥温度,防止局部树脂固化;提高表层纸的挥发物含量;检修热压机,改进加压面的均匀性;定期更换忖垫材料;不锈钢板定期抛光;树脂应分析检验,不合格指标要求时停止使用。
      There are some white flowers on the surface
      Causes: insufficient glue content of surface paper or local resin curing in drying; The volatile content of surface paper is too low. Hot pressing type pressure is not uniform; Gasket material inelastic; Stainless steel plate shows uneven; Resin reaction too old, too large molecules, resin fluidity.
      Solution: increase resin content of surface paper or control drying temperature to prevent local resin curing; Increase the volatile content of surface paper; Repair the hot press, improve the uniformity of the pressure surface; Regular replacement of gasket material; Stainless steel plate regularly polished; Resin should be analyzed and tested, discontinue use when unqualified indicators are required.
      板面有湿花(水汽),边缘较为严重
      产生原因:浸胶纸干燥后挥发物含量太高;印刷木纹的油墨或染料所用的溶剂不合适;浸胶干燥后的胶膜纸吸湿(回潮)。
      解决方法:降低浸胶纸干燥后的挥发物含量;调换油墨(染料)用的溶剂;注意胶膜纸的存放,一般可用塑料布遮盖;
      There are wet flowers (moisture) on the board surface with severe edges
      Causes: the volatile content of immersion paper is too high after drying; Inks or dyes used in printing wood grain are not suitable solvents; After soaking and drying, the film paper is hygroscopic (moisture return).
      Solution: reduce the volatile content of the paper after drying; Change ink (dye) with solvent; Pay attention to the storage of film paper, generally can be covered with plastic cloth;
      防火板表面开裂
      产生原因:树脂反应过嫩,分子太小;树脂固化不完全;表层胶膜纸含胶量太高。
      解决方法:不合格的树脂停止使用;适当提高热压温度或延长热压时间;控制表层胶膜纸的含胶量。
      Cracked surface of decorative board
      Causes: resin reaction is too tender, the molecule is too small; Resin curing is not complete; Surface film paper contains too much glue.
      Solution: stop using unqualified resin; Appropriately increase the hot pressing temperature or prolong the hot pressing time; Control the glue content of surface film paper.
      装饰板分层
      产生原因:胶膜纸挥发物含量太低,胶膜纸在干燥时局部树脂固化;胶膜纸树脂含量不够;压力过低或热压时间不够;胶膜纸之间有杂物。
      解决方法:控制挥发物含量不要过低,干燥温度不要过高,时间不要过长、防止树脂局部固化;提高胶膜纸含胶量;适当提高压力含延长加热时间;铺模时注意清楚杂物。
      Decorative lamination
      Causes: the volatile content of film paper is too low, the local resin curing of film paper when drying; Resin content of film paper is not enough; Pressure is too low or hot pressing time is not enough; There are sundries between the coated papers.
      Solution: control volatile content should not be too low, drying temperature should not be too high, time should not be too long, to prevent local curing of resin; Increase the glue content of film paper; Appropriately increase the pressure including prolong the heating time; Pay attention to clear sundries when laying molds.
      富美家防火板翘曲
      产生原因:各种原纸组织成分厚薄不均匀;胶膜纸含胶量不均匀,各处压力不一致;压制过程中保温后未能进行充分冷却;
      解决方法:各种原纸应符合工艺要求;保持树脂浓度均匀,调整挤压辊轴的间隙;冷却到50度以下在进行卸压00。
      Warping of fumei's fire protection board
      Causes: the thickness of tissue components of various base paper is not uniform; Film paper glue content is not uniform, the pressure is not consistent; Not enough cooling after heat preservation in the process of pressing;Solution: all kinds of base paper should meet the process requirements; Keep the resin concentration uniform, adjust the clearance of the extrusion roller shaft; Cool to below 50 degrees before pressure relief 00.
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