Products

The LSR glass overmolding pot lid injection mold is specifically developed for producing high-quality cookware lids by overmolding silicone onto tempered glass. This injection mold for glass-overmolding pot lid adopts a cold runner system to ensure stable production, precise material control, and minimal silicone waste. The mold is designed with a multi-cavity layout and a double lower-mold structure, allowing one lower mold to be injected while the other is demolded, significantly improving overall production efficiency. High-strength tool steel and mirror-polished cavities ensure excellent durability and long mold life, suitable for continuous mass production.

Mold information

Mold core material:S136H

Mold base mateerial:S50C

Number of cavity:4

Runner system:Cold Runner

Number of cold nozzle:4

Product name:O-ring seals

Machine used:TYM-L6068

Description

Glass overmolded silicone pot lids are widely used in modern cookware due to their excellent sealing performance, heat resistance, and enhanced user safety. By using a silicone injection mold for pot lid, the silicone rim is securely bonded to the glass lid, providing anti-slip handling and effective steam sealing. Compared with traditional rubber processes, this injection mold for glass-overmolding pot lid delivers higher consistency, cleaner appearance, and better production stability. TYM’s solution is optimized for cookware manufacturers seeking reliable quality, reduced scrap rate, and efficient production cycles.

Mold Design and Key Technologies

Cold Runner System
The cold runner design keeps LSR material at a controlled temperature before injection, ensuring stable molding conditions and significantly reducing material waste during production.

Gate, Tear-Off Edge, and Venting Overflow Design
The mold is engineered with precise gating, tear-off edges, and exhaust overflow structures. This ensures complete filling, smooth demolding, and clean product edges, while maintaining good air evacuation during injection.

Double Lower-Mold Structure
The double lower-mold configuration allows alternating injection and demolding operations, effectively shortening cycle time and increasing production efficiency.

High-Precision Machining
Advanced CNC and EDM machining guarantee accurate alignment between glass inserts and silicone overmold, ensuring uniform thickness and strong adhesion.

FAQ

Q1: What are the main advantages of this injection mold for glass-overmolding pot lid?
It offers stable production, low material waste, efficient double lower-mold operation, and clean part edges due to optimized gate and venting design.

Q2: Why use a silicone injection mold for pot lid instead of traditional methods?
A silicone injection mold for pot lid provides better sealing, improved appearance, and longer service life compared with conventional rubber molding.

Q3: Is this mold suitable for mass production?
Yes. The silicone injection mold for pot lid is designed for high-volume production with a long service life exceeding one million cycles under proper maintenance.