Rubber & Plastic Surface Finishing Standard
SPI Finishing Standard
The SPI surface finishing standards, established by the Society of the Plastics Industry, categorize finishes into twelve grades ranging from A1 to D3, with surface roughness values from RA 0.012 μm to RA 18.00 μm, covering a spectrum from shiny to dull and from polished to textured finishes. Each grade specifies different finishing methods and recommended materials, ensuring consistency and quality in molded plastic parts.
SPI Surface Finish Grades Overview
VDI Finishing Standard
VDI Surface Finish Grades Overview
Glossy Surface
Achieved through high polishing techniques, resulting in a mirror-like surface
Price range: $$$
Applications: High-end consumer products, optical components.
Semi-Gloss Finish
Provides a moderate level of gloss, balancing shine and aesthetic appeal.
Price range: $
Applications: Automotive interiors, electronic housings.
Matte Finish
Non-reflective surface that minimizes glare; often achieved through specific texturing techniques.
Price range: $$
Applications: Subdued appearance, consumer goods
Textured Finish
Description: Rougher surface textures created through methods like sandblasting or texturing.
Price range: $$$
Application: High-end consumer products, optical components.
Common questions
Surface Finishing FAQs
Find clear and concise answers to common questions about our process, services, and how we support business growth.
Can I request a custom surface texture for my parts?
Yes, we can create custom textures based on your design and functional needs.