色婷婷久久综合中文久久蜜桃AV,亚洲Aⅴ无码一区二区二三区软件,亚洲AⅤ综合在线欧美一区,久久精品亚洲中文字幕无码麻豆,师父的蘑菇好软水好多H15视频,久久午夜夜伦鲁鲁片无码免费播放区,啦啦啦在线观看视频免费观看,亚洲毛片视频一级,久久国产精品久久国产精品,欧美三级一区二区三区在线观看

Technical document

How much does the wall thickness of plastic parts affect the product?

2024-10-21 16:43:10 The wall thickness of plastic parts

The wall thickness of plastic parts has a significant influence on product quality.

First, mechanical properties

Step 1: Intensity

Adequate wall thickness provides sufficient strength. If the wall thickness is too thin, plastic parts are prone to rupture 

and deformation when subjected to external forces. For example, in some plastic containers that need to withstand a 

certain pressure, insufficient wall thickness may cause the container to break during filling or transportation, affecting 

the performance and safety of the product. The wall thickness is too thick, although the strength has increased, but it 

may lead to internal stress concentration, so that the plastic parts in the cooling process of warping, shrinkage and other 

defects, will also reduce the quality of the product.

2. Rigidity

Reasonable wall thickness helps to improve the rigidity of plastic parts. When the wall thickness is too thin, the plastic 

parts are easy to bend and deform, which affects the dimensional stability and assembly accuracy. For example, in the plastic 

housing of some precision instruments, insufficient wall thickness may cause the housing to fail to provide adequate support 

for the internal components, affecting the performance and reliability of the instrument.

However, the wall thickness is too thick may also make the plastic parts too heavy, increase the weight and cost of the product, 

and may also affect the appearance quality of the product. Therefore, it is very important to reasonably determine the wall 

thickness of the plastic parts. Points to note are as follows:

a, the wall thickness of plastic parts should be as uniform as possible, to avoid too thin, too thick and wall thickness mutation, 

if the plastic parts require a change in wall thickness, should use a gradual or circular transition, otherwise it will cause uneven 

shrinkage of plastic parts deformation, affect the strength of plastic parts, affect the flow of injection molding process problems.

b, the wall thickness of plastic parts is generally in the range of 1-5mm. The most commonly used value is 2-3mm.

c, the minimum wall thickness of commonly used plastic parts and the recommended value of commonly used wall thickness: (mm)

d, try not to design the reinforcement and screw column too thick, it is generally recommended to take half of the thickness 

of the body wall is safer, otherwise it is easy to cause appearance problems such as miniature

e, try not to design the parts into a separate plate, the size is very small, otherwise the deformation will lead to uneven parts


injection mould

injection mould

Second, molding process

1. Injection molding

During the injection molding process, the wall thickness has an important effect on the molding cycle, shrinkage rate and other 

parameters. When the wall thickness is too thin, the flow resistance of the plastic melt in the mold increases, the filling is difficult, 

and the defects such as short shot and lack of material are easy to appear. This will not only affect the appearance quality of the 

product, but may also reduce the strength and performance of the product.

If the wall thickness is too thick, the cooling time will be extended, the molding cycle will be increased, and the production 

efficiency will be reduced. At the same time, the thick wall part is easy to produce uneven cooling phenomenon, resulting in 

increased internal stress, shrinkage holes, shrinkage marks and other defects.

2. Blow molding

For blow molded plastic parts, the uniformity of wall thickness is very important. Uneven wall thickness will lead to uneven 

force in the blowing process of plastic parts, easy to crack, deformation and other problems.

Reasonable wall thickness design can ensure uniform expansion of plastic parts in the blow molding process, improve product 

quality and production efficiency.

Third, appearance quality

1. Surface flatness

The uneven wall thickness will cause the plastic parts to shrink inconsistently during the cooling process, resulting in uneven 

surface phenomena and affecting the appearance quality of the product. Especially for some plastic parts with high appearance 

requirements, such as automotive interior parts, electronic product shells, etc., the uniformity of wall thickness is directly related 

to the grade and market competitiveness of the product.

2. Gloss

The wall thickness also has a certain influence on the gloss of plastic parts. In general, the surface gloss of plastic parts with 

moderate wall thickness is better, and the wall thickness is too thin or too thick may lead to a decrease in gloss. This is because 

when the wall thickness is too thin, the flow speed of the plastic melt in the mold is faster, and the surface is easy to produce a 

rough phenomenon; When the wall thickness is too thick, the cooling time is extended, and the crystallinity of the plastic 

molecules is increased, which will also affect the surface gloss.

Fourth, the cost factor

1. Material cost

Too thick wall thickness will increase the amount of material used in plastic parts, thereby increasing the cost of the product. 

Under the premise of meeting the performance requirements of the product, the wall thickness should be minimized to reduce 

the material cost.

2. Processing cost

Wall thickness also has an impact on processing costs. When the wall thickness is too thin, the processing difficulty is increased, 

and higher injection pressure and speed are required, which increases the energy consumption and wear of the equipment, 

thus increasing the processing cost. The wall thickness is too thick will prolong the molding cycle, reduce production efficiency, 

and also increase the processing cost.

injection mould


Home
Product
News
Contact
免费看女人与公拘交酡过程| 亚洲区欧美区综合区自拍区| 久久久国产精品萌白酱免费| 无码一区二区视频| 国产精品一区二区久久不卡| 久久久久婷婷国产综合青草电影| 我和公发生了性关系视频| 性生大片免费观看多| 日韩精品久久无码二区| 国精产品999一区二区三区有限| 国产精品自在自线视频| 台湾无码中文娱乐网| 国产办公室无码视频在线观看| 亚洲欧美日韩一区二区在线观看| AV无码免费一区二区三区| 久青青视频精品免费观看| 亚洲精品国产字幕久久vr| 国产在线精品观看一区| 欧美一区二区三区黄片| 久久久久久精品免费无码无| 精品无码一区二区三在线观看| 国产精品麻豆成人AV电影| 亚洲伊人久久精品影院| 少妇激情av一区二区| 天堂va欧美ⅴa亚洲va一国产| 久久青草亚洲av无码麻豆| 国产精品亚洲色婷婷99久久精品| 桃子视频在线免费观看| 国产成人精品久久二区二区| 日产无人区一线二线三线小| 久久发布国产伦子伦精品| 91热久久免费频精品18韩国,| 老熟妇仑乱一区二区视頻| 99久久精品国产一区二区三区| 色一情一乱一伦一区二区三区| 亚洲成无码人在线观看| 亚洲色偷偷偷综合网另类小说| 国产精品丝袜久久久久久不卡| 欧美午夜精品一区二区蜜桃| 国产又色又爽又刺激的视频| 精品久久久久久无码人妻热|