2023年12月14日 · A weld line, often referred to as a knit line, represents the junction where two flow fronts converge during the molding process. This line typically emerges when these fronts are unable to seamlessly merge or “weld” together.

2024年10月28日 · Weld lines in injection molding are weak points where two flow fronts of molten plastic meet but don’t fully merge, often leading to reduced strength, aesthetic defects, and potential functional issues in molded parts. This article explores the causes of weld lines, their effects on the final product, and practical strategies to avoid or fix ...

Have you ever noticed a faint line on your plastic products? That's likely a weld line, and it can be a big problem in injection molding. Weld lines not only affect the appearance of your parts but can also weaken their structure. In this article, we'll dive deep into injection molding weld lines.

2023年1月13日 · What is Weld Line Defect? A weld line defect is a common problem in injection molded plastic parts. It occurs when two streams of molten plastic meet, cool and then fuse together during the injection molding process.

2024年8月24日 · Weld line, also known as knit lines, are linear traces formed by molten plastic during the filling process due to various reasons. These reasons include multiple gate injection molding, uneven wall thickness, voids, inconsistent flow velocity, and so on.

Weld lines are a common defect encountered in injection molding, characterized by visible lines or seams on the surface of molded parts. These lines occur when two or more molten material flow fronts meet and rejoin during the injection molding process.

2023年1月18日 · A weld line, knit line, or meld line may result in microstructural problems and undesirable aesthetic issues on plastic molding production lines.

Weld line, also known as knit line or meld line, is a visible line or mark on the surface of a plastic part where two or more flow fronts of molten plastic meet and fuse together. Weld line can affect the appearance, strength, and functionality of injection molded parts.

2023年6月9日 · What is Weld Line in Injection Molding? The injection molding weld line, also known as a knit line, is a visible line or mark that occurs in an injection-molded part where two or more melt fronts meet and fuse together during the molding process.

One of the most common blemishes or defects in production are weld lines. In this post, we focus on weld lines, specifically its main causes, other effects which cause defects and how to avoid it. If you are a manufacturing company, you can benefit from the itemization in this post as to weld lines. Hence, read on. How Do Weld Lines Appear?