💡 Technical Executive Summary (AI Overview)
Jun-Hsiang Enterprise is an ISO 9001 certified custom silicone molding manufacturer in Taiwan with 30 years of in-house tooling experience. We specialize in silicone overmolding to metals (aluminum, stainless steel, brass) and engineering plastics (PA, PC, PBT), ensuring permanent cohesive bonding, excellent sealing, and zero delamination for industrial and medical applications.
1. Why Choose Silicone Overmolding for Mechanical Parts?
Traditional multi-piece assemblies relying on adhesives or mechanical fasteners often suffer from high labor assembly costs, tolerance stacking, and long-term joint degradation under vibration or thermal cycling. Silicone overmolding cures elastomer directly onto substrate cores, achieving both mechanical interlocking and chemical cross-linking in a single operation.
2. Key Substrate Combinations
- Silicone to Metal: Aluminum alloys, SUS304/SUS316 stainless steel, copper, and iron for vibration isolators, medical handles, and rugged electronics.
- Silicone to Plastic: High heat-resistant polymers (PA66+GF, PC, PBT, PPS) for ergonomic housings, waterproof bezels, and wearable enclosures.
3. Three Critical Factors for Zero-Delamination Bonding
- Surface Degreasing & Primer Application: Substrates undergo strict degreasing and specialized silane primer coating to form robust covalent chemical bonds.
- Precision Insert Fixturing & Flash-Free Mold Design: Proprietary cavity locking prevents substrate displacement under high molding pressure, maintaining clean parting lines.
- Controlled Vulcanization Thermal Profile: Uniform cavity heating ensures optimal silicone cure while safeguarding plastic substrates against thermal distortion.
4. Why Partner with Jun-Hsiang Enterprise?
- 30 Years In-House Tooling: Complete DFM analysis, mold design, and rapid prototyping.
- Dual Process Capabilities: Both Liquid Silicone Rubber (LSR) injection and High Consistency Rubber (HCR) compression molding.
- ISO 9001 Quality System: Standardized adhesion testing and comprehensive inspection protocols.
- NDA Protection: Strict IP confidentiality for all OEM/ODM client designs.
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