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1、关于黄牛沙发皮的技术讨论 Furniture leather,Alex Zhao 2010-06-30,皮胚的整理Crusts prepare,复鞣染色后的皮胚湿绷板 Wet toggle after retanning and dying. 修边Cut the edges. 中厚皮或者自然摔沙发皮按工艺需要进行回潮静置过夜，振荡拉软Some thick crusts need spray oil or water, rest O/N and stake. 一些品种需要摔软绷板，例如很软的那帕皮或者全粒面苯胺皮Some products need mill and toggle, for ex
2、ample very soft nappa, full grain aniline.,补伤Stucco,大多数皮胚需要局部点补或刮补 Most of crust need apply stucco. 一些低等级的皮胚必须要进行全身刮补，而且要刮补和点补相结合两到三次 Some low grade crusts need total stucco for two or three times. 针对不同的伤残采取不同的办法和工具 Different defects different stucco methods. 过夜干燥 Leave over night.,磨革Buffing,磨两次 Buf
3、f two times 不同的产品采用不同的磨革方法 Different products different crusts different buffing methods.,封底Sealing coat,自然摔沙发皮: 喷 1-2遍 Natural milling leather:spray1x-2x, 压花皮封底：喷1遍 Embossed leather:spray1x, 放置四小时以上或者过夜 Leave more than 4hours or over night 熨平Iron:温度temperature about 90-120 .压力pressure 50-100bar.,封底
4、参考配方Sealer formulations,阳离子封底Cationic sealer: 水Water 200-300 AK4689 120(AK4685 100) UK1446(RK2406) 100 AK0386 0-30,阴离子封底Anionic sealer: Water 250-300 UR1707 40 AA4750 30 AK0386 20,底涂Base coat 1,自然摔沙发皮底涂Natural milling base coat: 膜足够软Film soft enough 很好的遮盖性Good cover ability 很好的鼓软性Good mill ability 很
5、好的再涂性Good refinish ability 好的可堆置性Good pile ability 轻粒面负载Light burden grain 好的耐光耐紫外线性能Good light fasten and uv proof,压花皮底涂Embossed base coat: 膜要足够软Film soft enough 很好的遮盖性Good cover ability 很好的压花定型性Good emboss and print ability 好的离板和堆置性Good released-plate and pile ability 压花抗切穿Good cut-against 好的鼓软性和鼓
6、软后表面舒展Good milling and natural surface after milling 耐光耐紫外线不黄变Good light fasten and UV proof,底涂Base coat 2,自然摔沙发皮Natural milling 刷Pad1x or spray2-3x, 喷浆Spray 硝化棉NC1x, 摔软Milling 绷板Toggle 喷底浆Spray base coat 3-6x 然后做效应层，例如双色，水洗擦色，擦顶等效果Do some effect on it, for example two-tone, wash off coat, tipping e
7、ffect and so on.,压花皮Embossed 刷一次Pad1x or 或者辊涂RC1X, 喷Spray 硝化棉NC1x, 压花Emboss 90degrees/120-200kg/2-5s 摔软Mill 6-12hours to effect 绷板Toggle 喷Spray3-6x,第一次加入少量UR1020 first time add some UR1020 inside 然后做效应层Do some effect on it, for example two-tone, wash off coat, tipping effect and so on.,底涂Base coat3,
8、自然摔沙发皮Natural milling 适合的化工材料 Suitable chemicals AM7335, AA4570, AA4750, AA4566, AA4365 CP2838,CP2841 RE2008, RE2327, RE2350, EE8060 UR1441, UR1417,UR1020 LA6190, LA6113,压花皮Embossed 化工材料Chemicals AM7335, AA4570, AA4365 CP2838, CP2863 RE2327, RE2350, RE2912, UR1441 EE8060 LA6190, LA6113,顶涂Top coat1,手
9、感Good touch:自然natural,绵蜡waxy,丝绸silky,平滑smooth,温暖warmly 不同的产品需要不同的手感，要看客户的要求Different products different touch, only for customer required 很好的物理性能Good performance 很好的耐光耐热黄变Good light fasten and UV fastness. 柔软Soft enough 喷Spray1-2x, 充分干燥 Dry enough 适合的聚氨酯顶涂材料 Chemicals:UR1786, UR1691, UR1695 交联剂 FX0570 手感剂 Touch Agent: AT7610, AT7612,AT7631, AT7661, AT7630 etc.,顶涂Top coat 2,参考工艺Formulation 水Water 100 UR1786 20-80 UR1691/UR1695 80-20 AT7610 2-4 FX0570 2,喷Spray1-2x,充分干燥 dry enough 如果需要If need,摔软mill 20-30minutes 轻喷Spray1x light, 手感层 feeling coat Finish,