Plastic Injection Molded Parts – Surface Finishes

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By Jeremy Losek, Sep 14th, 2021

ICOMold Standard Surface Finishes


More than ever, design determines the market success of a product. The attractiveness of the exterior of the part, the quality appearance of the surface, and the pleasantness of the feel are extremely important factors for having the customer choose your product over another. A creative surface finish can make your product stand out in a crowd.

You can specify the surface finish on your custom plastic injection molded parts. You can choose from the many available surface finishes. One advantage we have over our competitors is that we provide steel molds, as opposed to aluminum. Many more surface finish options are available with a steel mold compared to aluminum. Steel can be polished to a higher degree of smoothness to create a smoother surface finish on your parts. There are numerous options for surface finishes, such as bead blast, etching, matte finish, leather grains, geometric and graphics.

We use the Yick Sang standards for texturization, which is the Chinese equivalent of the Mold-Tech standards in North America. See the table below for our standard surface finishes, and please let us know if you will require a special surface finish – we’ll be happy to work with you on a custom finish.

plastic textures

Surface Finish Guide Typical Applications
Standard No Machine Mark Tool Marks Removed Low Cosmetic
SPI-C1 600 Stone Low Polish Parts
SPI-B1 600 Grit Paper Medium Polish Parts
SPI-A2 Grade #6 Diamond High Polish Parts
SPI-A1 Grade #3 Lens or Mirror
IM-1 Light Bead Blast Need 1 Degree Draft Angle
IM-2 Medium Bead Blast Need 1.5 Degree Draft Angle
IM-3 Heavy Bead Blast Need 3 Degree Draft Angle

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AS9100:2016
ISO 9001:2015
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McHenry, IL 60051
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ISO 9001:2015 Design Certified