What is the difference between liquid silicone injection molding process and injection molding process?

Each process has its specific advantages and application scenarios, and the choice of process depends on the final use, performance requirements, and cost budget of the product.
There are significant differences between the liquid silicone injection molding process and the injection molding process in multiple aspects. Firstly, let’s take a look at the liquid silicone injection molding process.
Liquid silicone injection molding (LSR) and injection molding (usually referring to the injection molding process of other plastics, such as thermoplastic) are two different manufacturing technologies that differ in materials, equipment, process flow, and product applications. Here are some main differences:
Material: Liquid silicone injection molding process: Liquid silicone rubber (LSR) is used, which is a two-component thermosetting material usually mixed in the form of A/B components. Injection molding process: Thermoplastics such as polypropylene (PP), polyethylene (PE), polycarbonate (PC), etc. are commonly used. These materials are single component and can be plasticized and cooled after heating.
Equipment: Liquid silicone injection molding process: requires specialized liquid silicone injection molding machines designed to process thermosetting materials, equipped with special metering and mixing systems. Injection molding process: Standard thermoplastic injection molding machines are used, which are designed to process thermoplastic materials.
Process flow: Liquid silicone injection molding process: involves mixing liquid silicone rubber from A/B components in a mixer, then injecting it into a mold, where the material solidifies to form a product. Injection molding process: Plastic particles are heated and melted, then pushed into the mold through the screw of the injection molding machine, and cooled to form a product.
Product application: Liquid silicone injection molding process: commonly used in the manufacturing of medical equipment, baby products, kitchen products, automotive components, etc. These products require characteristics such as high temperature resistance, chemical corrosion resistance, and soft touch. Injection molding technology: widely used in various fields such as packaging, electronics, automotive, construction, etc., to manufacture plastic products of various shapes and uses.
Environmental protection and recycling: Liquid silicone injection molding process: Silicone material is not easy to recycle, but it has good chemical stability and high temperature resistance characteristics. Injection molding process: Many thermoplastic materials can be recycled, but there are also some that are difficult to recycle or require special treatment.
Cost: Liquid silicone injection molding process: Typically, the cost is higher due to the high cost of liquid silicone rubber materials and the need for specialized equipment and processes. Injection molding process: The cost is relatively low because thermoplastic materials and equipment costs are lower.

Each process has its specific advantages and application scenarios, and the choice of process depends on the final use, performance requirements, and cost budget of the product.
In addition, there are differences in the process and technical requirements between the two. The liquid silicone injection molding process requires precise control of injection pressure, temperature, and time parameters to ensure the uniform distribution and sufficient filling of liquid silicone in the mold. The glue injection process places more emphasis on the selection of glue and precise control of the glue injection process, in order to achieve a good sealing effect.
Overall, although both liquid silicone injection molding and injection molding are molding techniques, there are significant differences in application areas, material usage, process and technical requirements. Each process has its unique advantages and applicability, and the choice of process depends on specific product requirements and application scenarios.
For the liquid silicone injection molding process, its excellent material properties and precise injection molding technology give it unique advantages in manufacturing high-precision and high demand silicone products. At the same time, the flexibility of mold design also makes this process suitable for manufacturing needs of various complex structures and shapes.
For the injection molding process, its excellent sealing performance and wide application areas make it occupy an important position in the door and window manufacturing industry. Through adhesive treatment, the sealing performance and overall performance of doors and windows are effectively improved, providing users with a more comfortable and healthy living environment.