steven's blog for plastic mold and plastic molding

After plastic mold is ready,Splicing is arguably the most mature and simplest ways of fabricating or fastening two injection molding pieces together. Infact, splicing methods have been known even before other methods like welding, bolting or soldering. The concept of splicing involves the connection of pieces by using the surface adhesion between the plastic molding parts and the adhesives’ firmness or cohesiveness. One of the best features in splicing is an even distribution of stress. In addition, other benefits are that totally different materials can be brought together, large splicing areas can be made quickly, and the adhesive itself fills uneven surfaces. Nevertheless, splicing also involves certain pitfalls. In certain cases, the strength is limited and not all materials are suitable for splicing (Polyolefins), and proper storage of the chemicals is vital. Changes in temperatures will render problems for moist adhesives. Also, a different expansion between the plastic and the...

Two-shot silicone-thermoplastic injection molding is a method to create a silicone-and-thermoplastic part in one process. These parts are traditionally plastic molding individually and assembled as one medical device component. The two-shot process eliminates secondary operations and assembly, which are often the main contributors to increasingly higher part costs. By reducing the chance of misalignments seen in traditional inserts or in overmolding processes, the two-shot process enables improved performance and consistent quality. The process offers the ability to produce complex mouldings from two different polymers at the same time during one machine cycle. Separate, but compatible, materials or colours are chemically bonded or mechanically interweaved during the forming process when the second material is injected into the mould, which avoids the need for further assembly or postprocessing. Alternatively, incompatible materials can be mechanically connected by two-shot moulding ...