久久婷婷六月天婷婷,欧美日本日韩一区二区三区,黄色三级三级三级视频,国内精品丝袜福利视频

Welcome to Shenzhen Zhongyuan Plastic Co., Ltd!

News



Tel:(0755)27151698
Fax:(0755)27150611
Mailbox:szzyzcl@163.com / szzy@szzy99.com
Add:Building A1 and A2, No.1 Industrial Zone, yuliu property company, Gongming town, Bao'an District, Shenzhen
Industry information

當(dāng)前位置:

首頁 News Industry information

Existing process of plastic shell processing

Release time:2023-06-27

Plastic shellThere are many processing procedures. Many friends know little about the professional knowledge of plastic shell processing procedures, but today we need to pay attention to it, because the next thing we want to talk about is what the processing procedures are in the case of plastic shell processing, so that we can have a clear understanding of the processing procedures of plastic shell, so that we can more effectively process plastic shell, so as to ensure the processing speed of plastic shell.


The first step in the plastic shell processing process is the selection of relevant materials. There are many kinds of plastic shell materials, including PC materials, PP materials, ABS materials, ABS PC materials and other materials. We must select the required plastic shell materials according to the specific situation.


After the selection of plastic shell materials is completed, all we need is to start the plastic shell processing link. The mixing and air drying link in the plastic shell processing process is coming. The key role of this link is to solve the moisture in the plastic shell raw materials, make the plastic shell raw materials meet the processing and use specifications, and prevent some defects in the plastic shell caused by material problems, endangering the quality of all plastic shells.


After the mixing and drying of the plastic shell, we rush to the process of plastic shell injection molding. In the process of injection molding, we should pay attention to three aspects, namely, the temperature of plastic shell injection molding, the injection rate and the injection method. These three problems directly endanger whether the plastic shell can reach the standard of product quality, which must be paid great attention to. The temperature should not be too high or too low, maintained at 240~320 °, and the injection rate should not be too fast or too slow, which should meet the thermal stress bearing range of the inner cavity of the plastic shell. Various injection methods must be selected for injection.

2.jpg

Copyright: Shenzhen Zhongyuan Plastic Co., Ltd. | mold processing customized manufacturer. If you want to know the processing price of the factory, how much is it, and which is good, please contact us Yue ICP Bei No. 17060480
美女主播被操流水| 国产一级a不收费| 97超视频免费在线观看| 午夜场射精嗯嗯啊啊视频| 黄色高清带三级1集2集| 亚洲精品一区二区精华液| 久久久三级黄片免费视频| 少妇无码一区二区二三区| 亚洲一区二区女同性恋免费看| 日韩欧美一级特黄大片欧| 黄色高清带三级1集2集| 中文字幕av一区二区三区蜜桃| 下载风骚美女想吃大机吧| 日韩欧美视频在线观看不卡| 91精品捆绑蜜桃| 精品的极品美女一区二区三区| 中文国产成人精品久久久| 看小伙草白女人比的黄片| 亚洲一区二区三区精品日韩| 日本美女阴户射尿| 精品日本一区二区三区视频播放| 国产裸模大尺度私拍视频| 亚洲综合网伊人中文| 国产精品不只是精品| 被下药强奷到舒服的视频| 久久久精品国产乱码内射| 狠狠五月激情综合去干网| 国产高清一区二区三区四区色| 黑丝美女被操到高潮| 性色av少妇一区二区三区多人| 久久久精品国产乱码内射| 伊人久久综合无码成人网| 大鸡巴操大屁股美女视频| 欧美99热这里都是精品| 999精品免费视频| 美女麻豆颜色光屁股眼子| 黄网官方在线观看| 亚洲一区二区三区精品日韩| 天天爽夜夜爽夜夜爽一区| 日韩有码视频在线| 国产高清乱码女大生AV|