国产精品久久久久成人免费,久久亚洲熟女cc98cm,亚洲愉拍99热成人精品,国产V片在线播放免费无码

Welcome to [ Wuxi Funecon Precision Mould Plastic Co., Ltd. ] website! Home| Sitemap| Email
Moulding Your Future

Enquiry:

138-6185-1071

138-6185-1071

Causes and solutions for surface color and gloss defects of injection mold products

Usually, the surface of the plastic products obtained by this injection molding method has a relatively good gloss and brilliant color, but in the actual injection molding process, many products produced by the injection mold factory have relatively large color and gloss. In addition to the hard factors of plastic materials, colorants and the surface finish of the mold, what are the reasons for this?
(1) The mold has poor finish, the surface of the cavity has rust, etc., and the mold is poorly exhausted.
(2) The casting system of the mold is defective. The cold material well should be enlarged, the flow channel should be enlarged, the main flow channel should be polished, the runner and the gate should be polished.
(3) The material temperature and the mold temperature are low, and the local heating method of the gate can be used if necessary.
(4) The processing pressure is too low, the speed is too slow, the injection time is insufficient, and the back pressure is insufficient, resulting in poor compactness and darkening of the surface.
(5) The plastic should be fully plasticized, but the degradation of the material should be prevented, the heat should be stable, and the cooling should be sufficient, especially thick-walled.
(6) Prevent cold material from entering the part, and if necessary, use a self-locking spring or lower the nozzle temperature.
(7) Excessive recycled materials are used, plastic or colorant is of poor quality, mixed with water vapor or other impurities, and the quality of the lubricant used is poor.
(8) The clamping force should be sufficient.
2018/08/02 10:04:17 6149 次

Hot News

Copy right of the 2018 Wuxi Funecon Precision Mould Plastic Co., Ltd. All Rights Reserved

国产成人亚洲精品| 亚洲一区二区观看播放| 免费看成人做xxoo视频| 国产精品www夜色视频| 人妻互换共享4p闺蜜疯狂互换| 无码人妻一区二区三区| 日本三级欧美三级人妇视频黑白配| 上司人妻被下属侵犯hd| 国产精品视频23区AV| 熟妇人妻无码XXX视频| 色戒电影未删减完整版免费观看| 国产在线拍偷自揄拍无码成人小说 | 久久精品无码AV| 国产成人精品一区二区三区视频 | 国产强奷伦奷片| 国产香港明星裸体XXXX视频| 精品国产乱码久久久久久蜜桃网站| 亚洲乱码一区av春药高潮| 国产成人一区二区三区影院| 久久久久国产精品熟女影院| 久久欧美牲大无无码毛片| 国产AV无码区亚洲77777| 18款禁用免费安装的软件app| 狠狠色丁香婷婷久久综合麻豆| 亚洲最大的成人网站| 色婷婷久久综合中文久久蜜桃av| 国产一区二区在线视频| 日韩欧美高清dvd碟片| 欧美视频在线| 亚洲AV无码乱码在线观看,不卡| 色一情一乱一伦一区二区三区| AV无码人妻一区二区三区牛牛| 亚洲精品国产福利一二区| 日产国产亚洲精品系列p | 精品人人搡人妻人人玩A片| 久久亚洲AV无码国产精品| 亚洲国产精品无码中文在线| 亚洲一区二区三区日本久久九| 欧美bbwhd老太大| 欧美又黄又嫩大片a级澳门| 亚洲av久久无码精品九九|