Two-color plastic products twice molding
About Two-color plastic products twice molding
Two-shot injection molding: It is a special plastic molding process, also known as overmolding or inlay molding. It is similar to the two-color molding process, but is quite different from the two-color molding process. It is a process in which a certain plastic raw material is molded in a primary plastic mold, and the molded part is taken out and placed in a secondary molding mold to inject the same or another plastic material into a molding process. More complicated is the multiple molding, so that the appearance and process of the plastic product meet the desired requirements, which is called two-shot injection molding.
Two-shot injection molding can make the surface of the product full of softness and increase product functionality and added value. Over the past 10 years, over-injection technology has completely changed the aesthetic standards, design ideas and functional requirements of consumer products. Over-injection technology is known for creating "soft-feeling surfaces" but it also has many other features such as ergonomic design, two-color appearance, brand identity, and feature improvements. Using this technology, product features can be increased, such as noise reduction, vibration reduction, waterproofing, anti-collision and added value. It is widely used in mobile phone protective shells/mobile phone protective sleeves.
Two-shot injection molding, like co-injection, double injection molding and sandwich injection molding, belong to multi-material injection molding technology. The basic idea of multi-material injection molding is to combine two or more materials with different characteristics to increase product value. Generally speaking, the first type of injection material is called the substrate or base material; the second type of injection material is called the covering material.
Various over-injection technologies In the over-injection process, the covering material is injected above, below, around or inside the substrate to form a complete part. This process can be completed by multiple injection molding or insert injection molding. The covering material commonly used is an elastic material.
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