Silicone Injection Molding
Silicone Injection Molding
Silicone Injection Molding is a process that is widely used in the production of precision silicone parts. It is one of the core processes of lsr molding(Liquid Silicone Rubber Molding). Its core manufacturing process is a special mechanical mixing method that, in simple terms, mixes two-ingredient compounds together into a mold. Based on it, other Lsr molding processes such as overmolding and multi-shot molding are derived.
For the most part, we tend to view the injection molding process as the most efficient manufacturing process for the highest quality medical silicone products available today.
If you want to customize high-volume silicone parts and require precision, then you can consider choosing our injection molding solutions.
Advantages
The higher degree of automation
Based on the traditional process, the molding efficiency is improved, the time required for production is greatly shortened, and conditions are also created for large-scale production.
Higher precision
Compared with other processes, liquid injection molding can improve the precision of finished products with complex shapes to a higher level, and can effectively avoid the appearance of flash.
long-term cost-effective
Newtop flexibly adjusts and continuously optimizes the injection molding process for different needs. You can get the best medical-grade silicone injection molding solution with long-term cost-effectiveness.
A high-security closed system
It means less material waste and less risk of environmental contamination. Especially in the application of liquid silicone rubber in the medical device and food industry, this characteristic is particularly important.
Production Process
Injection molding equipment includes syringes, metering units, supply barrels, mixers, nozzles, mold fixtures, etc.
Typically, we first divide the formulation of the liquid silicone rubber compound into two parts, which are delivered in a certain proportion from the material barrel to the static mixer, which is powered by a special pneumatic metering pump system. Also, if you have more requirements for the product, the raw materials can be allowed to add colorants or other additives to change hardness before mixing.
In a static mixer, the compound is thoroughly mixed, even better than premixed solid silicone rubber. After that, the LSR compound is pushed into the metering part of the injection unit, and the cooling system will work so that the LSR compound will not undergo unnecessary catalytic reactions, which effectively reduces the possibility of material waste.
The LSR compound then enters the mold cavity and cures under the action of high temperature and pressure. This process is very rapid and usually only lasts a few seconds. When finished, the product is removed from the mold, the liquid silicone rubber is re-injected, and the next production cycle begins. This is the process flow of silicone rubber injection molding.
Why Choose Liquid Silicone Rubber？
LSR has many outstanding physical and chemical properties and is a very suitable material for injection molding. High quality liquid silicone raw material is the basis of NEWTOP’s perfect liquid silicone rubber injection molding service.
- High Biocompatibility
- Chemical Inertness
- Compression Resistance
- High Temperature Resistance
After LSR is cured by injection molding, it will remain stable for a long time. It is completely non-toxic to the human body and is an FDA-approved safety material.
LSR materials do not react with weak acids and bases, and have a certain resistance to ultraviolet rays, ozone, water, and certain radiations.
The LSR material has good elasticity, it can withstand repeated bending, and can return to its original shape after being compressed.
LSR can withstand the temperature range of -100°C-250°C, and can maintain no deformation and work stably under extreme temperatures.
Do you have a project for silicone products to discuss? Contact us today for a free quote!
Injection-molded medical silicone parts
Newtop Silicone Injection Molding is the best way to manufacture high precision silicone parts, especially for medical applications. Thanks to the CNC automation and closed system features of injection molding, you will be very satisfied with the quality performance of injection molded silicone parts.
Newtop Silicone Injection Molding Service
Newtop has been meeting the industry’s needs for medical silicone components since 2009. We have complete and expert knowledge in using a full range of silicones covering various properties and properties.
Multiple sets of highly automated horizontal injection molding machines are deployed at our manufacturing base in China. The factory has a certified Class 10,000/ISO Class 7 clean room.
Compared with other silicone molding manufacturers, NEWTOP’s production team is more experienced and dynamic. We have always made custom Lsr injection molding production the top priority of our business, and we focus on bringing the most suitable solutions and reliable products to our customers.
NEWTOP Silicone promises the precision of silicone rubber parts to meet customer expectations. After long-term development and improvement, our factory has established a strict and complete quality management system to test and evaluate product quality in each production link.
Contact Newtop today for the most competitive quote.
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