Tel / WhatsApp: +86 18669866209   E-mail:
Home / News / Blog / Common Problems and Solutions of Blow Molding Products

Common Problems and Solutions of Blow Molding Products

Views: 0     Author: Site Editor     Publish Time: 2023-06-12      Origin: Site


facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

Blow molding is a manufacturing process that produces hollow plastic products by melting plastic resin pellets and blowing them into a mold. This process is used to make a wide range of products, including bottles, containers, and other items. However, like any manufacturing process, blow molding is not without its problems. 

In this article, we will discuss some common problems related to blow molding products and their solutions.

1. Uneven Wall Thickness:

Uneven wall thickness is a common problem in blow molding products. It occurs when the plastic material is not distributed evenly throughout the mold. As a result, some parts of the product are thicker than others. This not only affects the aesthetics of the product but also its strength and durability.

Solution: To solve this problem, manufacturers need to ensure that the plastic material is evenly distributed throughout the mold. They can achieve this by optimizing the molding process, ensuring that the mold is designed correctly, and using the right amount of plastic material.

2. Defects and Flaws:

Another common problem in blow molding products is defects and flaws. These can be in the form of cracks, deformities, and other deformities that affect the overall quality of the product.

Solution: To prevent defects and flaws in blow molding products, manufacturers need to ensure that they use high-quality plastics, proper mold design, and optimal processing conditions. They should also conduct regular quality inspections during and after production to detect and eliminate any defects.

plastic blow molding products

3. Poor Surface Finishing:

Poor surface finishing is a common problem in blow molding products, especially in large products such as tanks and containers. It occurs when the surface of the product is rough, uneven, or has a matte finish instead of a glossy one.

Solution: To achieve a good surface finish in blow molding products, manufacturers need to optimize their processing conditions, including temperature, pressure, and cycle time. They can also use additives such as mold releases and surface finishes to improve the finishing of the product's surface.

4. Environmental Stress Cracking:

Environmental stress cracking is a phenomenon that occurs when a product is exposed to chemical compounds or other environmental factors that cause the plastic material to crack or deteriorate.

Solution: To prevent environmental stress cracking in blow molding products, manufacturers need to use plastics that are resistant to the specific chemicals and environments that the product is exposed to. They can also use anti-oxidizers and UV stabilizers to enhance the product's resistance to environmental factors.

In conclusion, blow molding is a complex manufacturing process that requires careful attention and quality control to produce high-quality products. By understanding the common problems associated with blow molding products and their solutions, manufacturers can optimize their production processes and produce products that meet their customer's expectations.

Get A Free Quote


As a professional blow molding machine manufacturer, Yankang has always been committed to the development and production of large hollow blow molding equipment.



Tel / WhatsApp:  +86 18669866209
Get A Free Quote
© Copyright 2022 Yankang Plastic Machinery. All Rights Reserved. Sitemap
we use cookies to improve your online experience. By continuing to browse this website, we assume you agree to our use of cookies. For details please see our privacy policy.