Wear-resistant high-hardness liquid mold silicone. If you need high-hardness mold silicone, contact Ms. Chen at 13662816580 (same number for WeChat).

The core logic for using high-hardness liquid silicone rubber for shoe mold positioning models is "mixing the silicone - preparing the substrate - pouring/brushing - curing - demolding." Following these steps ensures molding accuracy and durability.

1. Preliminary Preparation

• Prepare materials and tools: two-component high-hardness liquid silicone rubber (Component A base膠 + Component B curing agent), mixing container, stirring rod, electronic scale, shoe mold positioning prototype, release agent (such as Vaseline or specialized silicone oil).
• Treat the prototype surface: clean dust, oil stains, and burrs from the positioning prototype to ensure a dry and smooth surface.
• Apply release agent: evenly brush the release agent onto the prototype surface, let it air dry to avoid adhesion during subsequent demolding.

2. Mixing and Stirring

• Weigh according to the product instructions: common ratio is Component A : Component B = 10:1 (by weight). Use an electronic scale for precise measurement, as deviation in ratio can affect curing results.
• Mix at low speed: pour Component B into Component A and stir slowly in one direction for 3-5 minutes, ensuring no visible bubbles or white streaks.
• Vacuum degassing (optional): if a vacuum machine is available, place the mixed silicone into the vacuum machine and degas for 2-3 minutes to remove bubbles. If no equipment is available, let it sit for 5-10 minutes to allow bubbles to naturally rise and burst.

3. Pouring / Brushing Molding

• Pouring process: slowly pour the degassed silicone into the mold frame with the pre-fixed prototype. Pour from the edge slowly to avoid creating new bubbles from impact. The silicone should completely cover the prototype with sufficient thickness reserved (usually 5-10mm).
• Brushing process: for complex positioning model structures, apply in 2-3 layers. The first layer should be thin to allow the silicone to conform to the prototype details, followed by gradually thickening layers. After each layer, gently tap the mold frame to release bubbles.