Inmold coating

Various types of surface finishes are available for plastics and RP products, such as smooth, textured, molded-in color, and inmold coating. A textured product surface can be obtained through either a textured mold cavity or a postmold paint process. The former method is the most commonly used. A... 

One of the parts molded by G.I. Plastek using the soy-based Baydur material is the approximately 6 ft by 6 ft, 75 lb rear wall of the John Deere STS combine. G.I. Plastek adapted its proprietary ProTek inmold coating system to the new material so that John Deere could continue to enjoy the benefits of this cost-saving alternative to painting. 

Coating of the molding inside the compression mold, a method adopted from the US known as inmold coating (IMC) has provided a useful interim solution, albeit a complex one. The coating prevents the pores from rupturing. This method can also be used to render the surface conductive as a preparation for electrodeposition coating or electrostatic spraypainting. 

Plastic products are made by a variety of basic manufacturing processes. As an example a major method such as extrusion has subdivisions that include profile, pipe, tube, film, sheet, coating, post forming, etc. equipment In injection molding there are subdivisions such as coinjection, gas assist, foam, inmold decorating, etc. equipment. There are literally hundreds of processes used with only about the dozen, as reviewed in this chapter, that are principally used (2). 

Inmold powder lacquering or inmold painting can be used to produce surface coating on some compression molded parts. Powder lacquer, preferably UP resin, is injected electrostatically into the hot mold, which is opened by 100-200 pm and forms an integral layer with the molded part when the mold is reclosed. 

Inmold Lamination (Back Injection) Vs. Lamination/Coating.345... 

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