Detailed Introduction

This liquid silicone multi-cavity injection mold is customized for single-piece transparent pediatric nebulizer mask shells, fully adjusted for LSR’s high transparency, soft skin-friendly elasticity and medical biocompatibility to eliminate typical LSR molding defects including curved surface weld lines, transparent fogging and thin edge flash.

The split fixed-moving two-plate mold adopts independent large curved cavity layout to produce the irregular flower-shaped transparent nebulizer mask shown in the image, integrated with central threaded port and side hanging buckle positioning bosses. Each mask curved cavity is a whole embedded insert for quick disassembly and residue-free deep cleaning. All molding surfaces adopt multi-stage high-gloss mirror polishing tailored to LSR high-temperature vulcanization characteristics, which greatly improves mask surface transparency and removes internal fluid dead corners, eliminating secondary post-molding trimming.

Independent distributed cooling pipelines are laid around the full contour of the curved mask cavity to precisely stabilize mold temperature during continuous high-temperature LSR injection curing, effectively restraining thin mask wall uneven shrinkage and facial contact surface warpage that affects wearing comfort. Built-in precision interlock slide locking blocks maintain stable clamping force under long-cycle cleanroom mass production, preventing micro flash on thin mask edge and threaded port structures, and extending mold service life under cyclic liquid silicone molding.

Complete Precision Machining Workflow

1. 5-axis CNC rough milling for mold base outline and irregular curved mask cavity rough forming
2. Vacuum stress relief heat treatment to stabilize steel hardness and reduce thermal deformation under continuous high-temp LSR vulcanization
3. Precision surface grinding to control mold plate flatness & parallelism within ±0.002mm
4. Sinker EDM & Wire Cut WEDM for ultra-fine threaded central port, side buckle and curved mask edge contours
5. Multi-stage high-temperature resistant high-gloss polishing optimized for transparent medical LSR
6. Optional particle-free anti-corrosion surface coating compatible with infant-grade biocompatible LSR raw materials

All mold core, cavity and structural components complete full 3D coordinate measuring inspection to satisfy strict wearable pediatric respiratory medical device drawing tolerance standards. Full customization is supported based on LSR mask shell samples or engineering drawings: cavity quantity, mold steel grade, cooling circuit layout and polishing grade can be adjusted according to infant medical LSR purity grade, biosafety cleanroom standards and daily production capacity. The single large curved cavity layout ensures uniform wall thickness of pediatric masks while unifying optical transparency, soft touch and wearable dimensional consistency of transparent LSR nebulizer masks.

Specification Table