亚洲国产精品久久,91精品欧美一区二区三区,少妇激情艳情综合小视频,97久久精品人人澡人人爽

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 6186 次

Hot News

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

欧美色人阁| 永久免费AV网站| 99久久久国产精品免费无卡顿| 最近2019年好看中文字幕视频| 善良的小峓子4中字手机在线观看| 她很漂亮在线观看免费韩剧| 狠狠做深爱婷婷综合影院| 女bbbbxxxx毛片视频0| 中文人妻乱交一二三区| 农场主儿女1984免费| 国产精品欧美一区二区三区不卡| 131美女爱做视频午夜免费| 精品日韩欧美一区在线播放| 日韩精品视频一区二区三区| 麻豆传煤| 无码任你躁久久久久久老妇| 狠狠色噜噜狠狠狠狠AV不卡| 欧美亚洲国产日韩综合| 131美女爱做视频午夜免费| 午夜免费啪视频在线体验区| 无码国产精品一区二区免费式直播 | 我调教同学的放荡麻麻| 最近中文字幕视频2019年| 中文字幕日韩精品无码内射| 国产欧美一区二区三区免费看| 免费观看AV在线网站网址| 是不是好久没人弄你了小说| 男人趴在美女身上亲胸| 中文字幕亚洲精品日韩一区| 国精产品在线WNW2544| 日本国产性爱观看视频| 久久国产精品-国产精品| 日韩有码中文字幕在线视频| 在调教室强迫坐三角木小说| 调教小SAO货撅起打屁股作文| 日韩欧美三级| 手机在线一区二区三区| 日韩欧美国产高清在线观看| 国产一区精品在线观看| 亚洲第九页| 欧美日韩国产码综合二区|