欧美日韩毛片熟妇有码无码,亚洲欧美日韩久久精品第一区 ,国产AⅤ激情无码久久久无码,狂躁美女大bbbbbb视频

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 6031 次

Hot News

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

动漫AV纯肉无码AV在线播放| 国内精品视频一区二区三区八戒| 男男做爰猛烈叫床视频gv| 亚洲精品国产一区二区精华液| 激情的丝袜麻麻| 国产精品久久久久久久9999| 少妇被爽到高潮动态图| 少妇无码久久一区二区三区| 日本xxxx| 日本WV一本一道久久香蕉| 综合色就爱涩涩涩综合婷婷| 亚洲精品久久久久久久蜜桃 | 一本大道精品成人免费视频| 国产在线视频www色| 国产重口小伙子嫖老女人| 99久久综合狠狠综合久久| 亚洲成AV人片一区二区| 亚洲熟女乱综合一区二区| 小蜜被两老头吸奶头在线观看 | 凹凸国产熟女精品视频app| 人妻av中文系列| 中国xxxx真实偷拍| 人妻少妇啊灬啊灬用力啊快 | 三年片在线观看免费观看大全| 无码人妻精品一区二区三区9厂 | 男女野外做爰电影免费| 国产精品无码久久久久成人网站| 亚洲第一成人网站| AV无码人妻一区二区三区牛牛 | 亚洲AV无码成人精品区在线观看| 亚洲av中文无码乱人伦在线播放| 把极品白丝班长啪到腿软| 久久无码人妻一区二区三区午夜| 免费萌白酱国产一区二区三区| 伊人久久大香线蕉AV不卡 | 亚洲精品成人区在线观看| 免费久久人人爽人人爽av| 白天躁晚上躁天天躁| 荫蒂添的好舒服视频| 99草草国产熟女视频在线| 两男一女两根同进去舒服吗|