Accelerating Prototype Production with Silicone Mold Vacuum Forming

Introduction

Longterm Manufacturing Solutions Ltd. leverages the silicone mold vacuum forming process to deliver high-precision prototypes and small-series parts in as little as 5 days. By combining advanced silicone mold making with vacuum forming molds, our Dongguan-based factory meets global OEM demands—delivering 300 top-standard molds per year, with 80% serving European and American markets.

Core Steps of the Silicone Mold Vacuum Forming Process

Master Model Creation

• Techniques: 3D printing, CNC machining, hand sculpting

• Tolerance: ±0.2 mm over 100 mm spans

• Surface finish: Ra 0.8 µm achievable

Silicone Mold Making

• Material: Platinum-cure silicone rubber

• Shore hardness: 20–40 A

• Cure time: 4 hours at 25 °C

• Repeatability: > 50 vacuum forming cycles per silicone mold

Vacuum Forming Process

• Thermoplastics: ABS, polycarbonate (0.5–5 mm)

• Heating: 150–180 °C for 30 s

• Vacuum: 0.8 bar draw-down

• Cycle time: 45–60 s forming + 2 min cooling

Cooling and Solidification

• Cooling time: 2 minutes at ambient 23 °C

• Dimensional stability: < 0.5% shrinkage

Demolding and Finishing

• Trimming accuracy: ±0.1 mm

• Surface smoothing: optional bead blasting or polishing

Repeat Production Runs

• Typical batch: 50–200 parts

• Yield rate: ≥ 98% per run

Technical Comparison: Vacuum Forming vs. Silicone Injection Molding

When evaluating small-scale production, choose based on volume, detail, and budget:

• Volume under 1,000 pcs → Vacuum forming molds, with setup cost ≈ USD 500.

• Volume over 2,000 pcs → Silicone injection molding, with ROI in 5,000+ pcs.

• Complex undercuts or living hinges → Silicone injection molding for integral features.

• Tight lead time (< 7 days) → Silicone mold making + vacuum forming process.

Benefits of Our Vacuum Forming Molds

• Speed: silicone mold making in 1–2 days

• Cost efficiency: tooling cost up to 70% lower than rigid tooling

• Flexibility: quick iteration on design changes

• Surface detail: faithfully replicates master model features

• Material variety: accommodates FDA-grade plastics

Why Longterm Manufacturing Solutions Ltd.

Skilled Team

• 50 skilled workers, 7 professional engineers

• High team spirit ensures timely delivery

Advanced Facilities

• 1,200 m² ISO-certified workshop

• 5 vacuum forming machines, 3 curing ovens

Quality Management

• IQC, IPQC, OQC protocols

• 99% on-time delivery rate

Global Reach

• 80% molds shipped to EU/US annually

• Customer-centric service with 24 h response

Decision Guide: Selecting the Right Process

Step 1: Define volume and budget.

Step 2: Assess feature complexity.

Step 3: Match to process:

• For rapid prototypes or small runs, choose vacuum forming molds and silicone mold making.

• For large volumes or integrated inserts, choose silicone injection molding.

Conclusion

Our silicone mold vacuum forming process empowers designers and engineers to move from concept to functional part in days, not weeks. With precise silicone mold making, efficient vacuum forming molds, and expert post-processing, Longterm Manufacturing Solutions Ltd. offers a complete solution for low-volume, high-detail production.

Contact us:

For inquiries, contact LongTerm Mold:

Email: longterm@longterm-mold.com

Phone: +86-769-8539 3519

Website: www.longterm-mould.com