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1、CHALLENGING BOUNDARIESENGINEERING PLASTICSTECHNYL Molding Guide 泰克尼成型指南CHALLENGING BOUNDARIESCareful handling of the polyamide productsCareful handling of the polyamide products 小心小心处处理聚理聚酰酰胺胺产产品品Keep granules in their sealed bags or containers until required 请保持颗粒在密封袋或密封容器内直到需求使用前Be sure to use the
2、 polymer granules within one hour after opening its sealed packaging 确保使用的颗粒在开封后1小时 内用完。Seal partly used bags again to reduce any moisture absorption使用完后的余料须及时密封以减少水分的吸收。Dry material prior to processing in case of too high moisture content, to control 0.2% 如果水分含量太高，成型前须干燥 ，控制含水率0.2%.CHALLENGING BOUN
3、DARIESRate of water absorption by granules at 23CRate of water absorption by granules at 23C 塑胶塑胶颗颗粒在粒在2323度度时时的吸水速度的吸水速度0.60.50.40.30.20.10Water content in granules (%) 颗粒含水率01234567 Time (hours)时间RH75 相对湿度75RH50 相对湿度50RH25 相对湿度25%TECHNYL A 218CHALLENGING BOUNDARIESWater absorption of the granules
4、after the bag is openedWater absorption of the granules after the bag is opened 包装袋打开后包装袋打开后颗颗粒的吸水性粒的吸水性Time after the bag is opened (hours) 包装袋打开后的时间Lower part of the bag包装袋的最底层TECHNYL A 218Middle part of the bag 包装袋的中间层Upper part of the bag 包装袋的表层00.10.20.30.402468101214 1618202224Water content in
5、 granules (%) 颗粒吸水率CHALLENGING BOUNDARIESDrying very humid granules(example:recycle material)Drying very humid granules(example:recycle material) 湿料的干燥湿料的干燥( (如：回料如：回料）Drying time (hours) 干燥时间TECHNYL A 218 V3000.10.20.30.50.40.60.70.80.9051015202530Desiccant dryer 除湿干燥机 Temperature: 80C 温度80 C Dew p
6、oint: -35C 露点-35 C Water content in granules (%) 颗粒含水率CHALLENGING BOUNDARIESDifferent ways of dryingDifferent ways of drying 不同的干燥方法不同的干燥方法TECHNYL A 218 Temperature: 80C00.050.10.150.20.2502468101214Vacuum dryer真空干燥机Hot air dryer热风干燥机Desiccant dryer (dew point -30C) 除湿干燥机，露点30cWater content in granu
7、les (%) 颗粒含水率Drying time (hours)干燥时间CHALLENGING BOUNDARIESDryer type & drying timeDryer type & drying time 干燥机干燥机类类型与干燥型与干燥时间时间Dehumidifying Dryer 除湿干燥机Hot Air dryer热风干燥机Natural and light color material自然色与轻颜色的材料 Temperature = 70 80 温度=7080 Time = 2 3hrs (closed bag)时间=23小时（密封袋）Max. 8hrs (opened bag
8、)最大8小时（开包） Natural and light color material自然色与轻颜色的材料 Temperature = 80 90 温度= 80 90 Time = 4 5hrs (closed bag)时间=4 5小时（密封袋）Max. 8hrs (opened bag) 最大8小时（开包） Black and dark color material黑色与黑暗色的材料 Temperature = 80 120 温度= 80120 Time = 2 3hrs (closed bag)时间=23小时（密封袋）Max. 12hrs (opened bag) 最大12小时（开包） B
9、lack and dark color material黑色与黑暗色的材料 Temperature = 100 120 温度= 80120 Time = 4 5hrs (closed bag)时间=23小时（密封袋）Max. 12hrs (opened bag)最大12小时（开包） CHALLENGING BOUNDARIESMolding RecommendationsMolding Recommendations 泰克尼尼泰克尼尼龙龙加工建加工建议议PA 66 TECHNYL ARemark:If GF or Mineral content increase,the barrel/moul
10、d temperature would be increased in temperature range accordingly. 如果玻纤或矿物含量增加，则料温/模 温在温度范围内也会相应的提高。 V=RPM*3.14*D/60CHALLENGING BOUNDARIESTroubleTrouble Shooting of Shooting of Injection Injection Molding Molding 常常见见缺陷的原因与解除方法缺陷的原因与解除方法Figure 1 : Sink marks near ribs 图 1 :筋附近的缩影Figure 2 : Sink mark
11、s due to wall thickness variation图 2 : 由于壁厚变化产生 的缩影Figure 3 : Sink marks on a cylindrical core whose temperature was not controlled correctly图 3 : 缩影产生在不能很好 控制温度的型芯附近 1、Sink Mark缩印CHALLENGING BOUNDARIESTroubleTrouble Shooting of Shooting of Injection Injection Molding Molding 常常见见缺陷的原因与解除方法缺陷的原因与解除方
12、法Figure 5 : Silvery Streaks due to high residual moisture in the granules 图 5 :银丝产生由于塑 胶颗粒水分含量高Figure 4 :Silvery Streaks due to excessive moisture content of the granules图 4 :银丝由于塑胶颗粒水分 含量高2、Silvery Streak银丝CHALLENGING BOUNDARIESTroubleTrouble Shooting of Shooting of Injection Injection Molding Mold
13、ing 常常见见缺陷的原因与解除方法缺陷的原因与解除方法Figure 6:Air streak due to entrained and stretched air near a rib 图 6:筋位附近空气卷入Figure 7 : Air streaks (near the sprue) due to sucked in air during decompression图 7 : 由于后松退时空气吸入而产 生气痕（在流道附近）3、Air Streak气痕CHALLENGING BOUNDARIESTroubleTrouble Shooting of Shooting of Injection
14、 Injection Molding Molding 常常见见缺陷的原因与解除方法缺陷的原因与解除方法Figure 8 : Glass fiber streak due to orientation near the sprue 图 8 :浇口附近由于取向产生玻纤 外露Figure 9 :Glass fiber streaks (clearly visible weld line) 图 9 :玻纤外露，熔接缝处更明显4、Glass Fiber Streak玻纤外露CHALLENGING BOUNDARIESTroubleTrouble Shooting of Shooting of Injec
15、tion Injection Molding Molding 常常见见缺陷的原因与解除方法缺陷的原因与解除方法Figure 10 : Burns Streak due to poor ventilation near a rib图 35 :在筋位附近由 于排气不良烧焦Figure 11 : Burns Streak due to entrapped air at the end of the flow path 烧焦发生在在产品 流动末端Figure 12 : Burns Streak due to merging of several flow fronts (filling study)图
16、12 : 烧焦发生在几股料流 会合处5、Burns Streak烧焦痕CHALLENGING BOUNDARIESFigure 13 ： Deformation due to forced demolding at an undercut图 52 : 变形由于倒拉而强 制脱模造成Figure 14 : Demolding grooves on a textured surface 图 53 : 皮纹拉毛TroubleTrouble Shooting of Shooting of Injection Injection Molding Molding 常常见见缺陷的原因与解除方法缺陷的原因与解除方法6、Deformation during demolding脱模变形CHALLENGING BO
