Solid Silicone
Compression Molding
The foundational process for premium HTV silicone products. Ideal for thick-walled, multi-color, and insert-based components, delivering exceptional durability and tactile quality for global brands.
How Compression
Molding Works
Pre-weighed solid silicone rubber (HTV) is placed into a heated mold cavity. Under precisely controlled pressure and temperature, the material flows, fills every detail, and vulcanizes into its final cured form -- producing strong, dense, and dimensionally stable parts.
Material Prep
HTV silicone sheets cut and weighed per cavity volume.
Mold Loading
Blanks placed into pre-heated steel cavity.
Compression
Hydraulic press applies 150-300T force at 170-200°C.
Vulcanization
Curing time 90s-5min based on wall thickness.
Deflash & QC
Trimming, post-cure, dimensional inspection.
Suitable Products,
Sizes & Structures
Compression molding excels where structural robustness, thick cross-sections, and tactile density are prioritized. It's the preferred choice for a wide range of home and kitchenware applications.
Thick-Wall Kitchenware
Spatulas, pot holders, trivets, oven mitts -- robust parts with wall thickness up to 15mm.
Baking & Ice Molds
Cake molds, muffin pans, ice trays, chocolate forms with intricate cavity geometries.
Mats & Flat Products
Placemats, baking mats, anti-slip pads -- large-area parts up to 600×400mm.
Capability Specifications
Mold, Material &
Parameter Control
Mold Design
- Steel GradeP20 / S136 / NAK80
- Cavity Count1 - 64 cav
- Mold Life300K - 1M shots
- Surface FinishSPI A-D, VDI
Material Selection
- TypeHTV / HCR
- GradeFood / Medical
- CertificationsFDA, LFGB, RoHS
- Color MatchPantone / RAL
Process Parameters
- Temperature170 - 200°C
- Pressure150 - 300 Ton
- Cure Time90s - 5 min
- Post-Cure200°C / 4h
Multi-Color, Insert &
Thick-Wall Expertise
Where other processes struggle, compression molding delivers. We specialize in complex configurations that demand craftsmanship: multi-color co-molding, metal/plastic inserts, and demanding thick-section geometries.
Multi-Color Co-Molding
Up to 4 colors in a single part, with crisp color boundaries and no bleeding.
Insert Molding
Overmolding stainless steel, nylon, and ABS inserts with validated adhesion strength.
Thick Wall Parts
Up to 15mm wall thickness with uniform curing and zero internal voids.
Efficiency, Cost &
Honest Limitations
Compression molding is not for every application. Here's a transparent breakdown of where it wins -- and where alternative processes may serve you better.
Strengths
-
Low Tooling Cost
Molds 30-50% cheaper than LSR injection -- ideal for mid-volume runs (10K-500K units).
-
Thick Section Capability
Handles 10mm+ walls without sink marks or voids common to injection processes.
-
Material Density
Higher tear strength and tactile quality compared to LSR for premium feel.
-
Large Part Friendly
Economical for large flat parts (mats, trivets) up to 600×400mm.
Limitations
-
Slower Cycle Time
90s-5min vs. 20-60s for LSR injection -- not ideal for ultra-high volumes (>1M units/yr).
-
Flash & Deflashing
Requires secondary trimming operation; micro-fine features harder to achieve.
-
Precision Ceiling
±0.1mm tolerance is excellent, but LSR injection reaches ±0.05mm for micro-parts.
-
Not for Micro Geometry
Features <0.5mm or complex undercuts better suited to LSR injection molding.
Defect Prevention &
Process Control
Every common defect has a root cause and a controlled solution. Our ISO 9001 process maps every quality risk to a verified countermeasure.
Submit your product for a
compression molding assessment
Share your product details and we'll return a tailored manufacturing feasibility report within 48 hours -- covering mold strategy, material grade, cycle time, and target pricing.