现在本人生产一款四芯PU线材，绝缘是PP生产外被起泡，剖开见芯线有起泡现象，不固定是那一条芯线，但检查半成品芯线光滑没有问题，把半成品80度烤过后有改善，请教各位大虾有没更好的解决办法，谢谢！

没有呀，半成品很好

加工压力太大，可选择挤管式押出方式 

加工时 温度不要太高 PU材料不可太稀加工

可交流13929267115 徐.R

出现这种现象一般是半成品和胶料两方面原因:1、保持被覆半成品表面的干燥；2、生产押出时机头眼模温度不要太高，可以适量的降低点，以线面OK为佳；3、PU料生产前100度烘料2H；4、第一段水槽尽可能的靠近出模口，做到第一时间冷却；5、可以适当提高生产速度。 个人实际生产经验，仅供参考，欢迎来来电共同探讨，谢谢！

                                                                                                                                                                                                      ——————————————————
                                                                                                                                                                                                                       东莞安拓普聚合物科技有限公司
                                                                                                                                                                                                                                            舒先生：13929260571
                                                                                                                                                                                                                                  邮箱：tts03@atpchem.com
                                                                                                                                                                               网址：www.--atpchem.com  http://jxwsjsy.cn.alibaba.com

谢谢了！

这是先从生产工艺方面来考虑的，如果再没有改善，个人认为只能从设计工艺方面去改善了：如变更产品结构，更换原料，选择半雾或雾面效果等. 个人实际生产经验，仅供参考，欢迎来来电共同探讨，谢谢！

                                                                                                                                                                                                      ——————————————————
                                                                                                                                                                                                                       东莞安拓普聚合物科技有限公司
                                                                                                                                                                                                                                            舒先生：13929260571
                                                                                                                                                                                                                                  邮箱：tts03@atpchem.com
                                                                                                                                                                               网址：www.--atpchem.com  http://jxwsjsy.cn.alibaba.com

谢谢了哈，舒总，改天过来玩