亚洲va中文字幕欧美不卡-亚洲va在线va天堂成人-亚洲va在线va天堂va手机-亚洲va在线va天堂va888www-久一视频在线-久污tv

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(yè) News Industry information

Types of plastic mold molding

Release time:2022-01-17

injection molding

It is a method that the plastic material is heated and melted in the heating barrel of the injection molding machine, and then the melt is pushed into the mold cavity of the closed mold through the reciprocating screw for molding.

It can not only produce high-precision and high-quality products with high productivity, but also has a wide range of processable plastics with large output (accounting for about 1/3 of the total plastic). Therefore, injection molding is one of the important molding methods in plastic processing.


Extrusion molding

Extrusion is a method of continuous molding of plastic through a die in a flowing state by heating and pressurizing in an extruder.

It is generally used for the molding of coatings such as plates, pipes, monofilaments, flat filaments, films, wires and cables. It has a wide range of applications and high output. Therefore, it is one of the important molding methods in plastic processing.


Foaming molding

It refers to the processing method of adding appropriate foaming agent into foaming materials to make porous or foam products. Foaming products have the advantages of low relative density, high specific strength, less consumption of raw materials, sound insulation, heat insulation and so on. Foaming materials include PVC, PE and PS.

Products: film, plate, pipe, profile, etc. Foaming can be divided into chemical foaming and physical foaming.


Blow molding

Blow molding (film expansion) molding (or hollow blow molding) refers to a molding method in which the thermoplastic parison or sheet in the closed mold is blown into a hollow product by fluid (compressed air) pressure.

Plastic containers produced by this method. For example, various bottle types, square types, barrels or flat barrels, gasoline tanks, etc. have been widely used. Newly developed industrial parts and daily-use products, such as double wall box products, L-ring barrels, palletizing boards, surfboards, seat backs and desks, as well as front chocks for automobiles, belt covers, instrument panels, air conditioning ventilation pipes, etc., have been applied in practice, and processing materials have developed from daily-use plastics to engineering plastics. Now blow molding has become one of the important molding methods in plastic processing.

But the basic steps of blow molding process are:

1. Molten material.

2. The molten resin is formed into tubes or parisons.

3. Melt and seal the hollow parison in the blow mold.

4. Blow the parison in the mold.

5. Cool blow molded products.

6. Remove the product from the mold.

7. Trim.


Injection Blow Molding

Injection blow molding is a blow molding method. The plastic is first made into a bottomed parison by injection molding, and then transferred to a blow molding mold to blow molded into a hollow product.

This method can be used to produce packaging containers for daily necessities, cosmetics, drugs, food, etc., but its volume should not exceed 1L. Commonly used plastics include polyethylene, polystyrene and polyvinyl chloride.


extrusion blow molding

Extrusion blow molding is a blow molding method. Unlike injection blow molding, its parison is made by extrusion.

stretch blow molding

Stretch blow molding is a blow molding method. The parison is made by extrusion and injection molding, and then heated to the drawing temperature. Longitudinal stretching is carried out by internal (such as mandrel) or external (such as fixture) mechanical force, and transverse stretching is carried out by compressed air inflation at the same time or later.

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
主站蜘蛛池模板: 色综合天天综合网站中国 | 欧美性黑人极品hd网站 | 欧美性生活一级 | 香蕉www| 日韩三级影院 | 日韩一级片免费在线观看 | 人人色在线视频播放 | 日韩一卡2卡3卡新区网站 | 丝袜美腿护士办公室在线观看 | 日本一区二区三区久久 | 欧美性乱 | 欧美视频在线观看网站 | 天天夜天天干 | 伊人888 | 亚洲第一区精品日韩在线播放 | 亚洲天天综合网 | 日本五级床片全部免费午夜 | 日韩欧美中字 | 乌鸦传媒在线视频国产 | 五月天丁香在线 | 午夜影视在线观看 | 欧日韩美香蕉在线观看 | 日本无卡码免费一区二区三区 | 在线a视频免费观看 | 青青国产成人精品视频 | 天天做天天添天天谢 | 视频一区二区中文字幕 | 日韩中文字幕免费 | 欧美一级视频免费观看 | 亚洲爱爱视频 | 三十极夜2免费视频 | 深夜国产一区二区三区在线看 | 最近韩国日本免费观看 | 四虎影院免费观看视频 | 速度与激情9全集免费观看 速度与激情9免费完整版高清 | 日本亚欧乱色视频在线系列 | 日韩高清免费观看 | 日韩不卡一级毛片免费 | 亚州一二区 | 午夜老司机在线观看 | 三级黄色在线播放 |