Liquid silicone rubber (LSR) coating small metal shells is a common process widely used in industries such as electronics, automotive, and home appliances to improve product sealing, insulation, shock resistance, and durability.
Quality control points for liquid silicone coated metal shell
Adhesive strength: Ensure a strong bond between silicone and metal, avoiding delamination (which can be verified by tensile testing).
No bubbles: During injection molding, it is necessary to control the exhaust to prevent the formation of pores inside the silicone.
Dimensional accuracy: The mold needs to ensure uniform thickness of silicone and not affect assembly.
Surface smoothness: Avoid shrinkage marks, flow lines, and affect appearance and touch.
Industry application cases
Consumer electronics: headphone charging case, smart watch metal frame with adhesive
Automotive industry: Sealing of onboard sensors, protection of wiring harness connectors
Industrial equipment: shockproof motor brackets, corrosion-resistant valve components