Tag Archive for: dimensional accuracy

What are the processing techniques for silicone products and what are the differences in the techniques?

The processing technology of silicone products mainly includes the following:

Compression molding:

Process description: Place silicone material into a mold and cure it into shape through heating and pressure. Application: Widely used in manufacturing seals, gaskets, buttons, etc. Features: Simple process, low cost, suitable for large-scale production.

Injection molding:

Process description: After heating and melting the silicone particles, they are injected into the mold and cooled to form. Application: Suitable for manufacturing silicone products with complex shapes. Features: High production efficiency, suitable for large-scale production, but high equipment cost.

Extrusion molding:

Process description: Silicone material is extruded into shape through an extruder, commonly used for manufacturing tubular or strip-shaped products. Application: such as silicone tubing, silicone strips, etc. Features: High production efficiency, suitable for continuous production, but the product shape is relatively simple.

Rolling forming:

Process description: The silicone material is rolled into thin sheets or films through a rolling machine. Application: such as silicone film, silicone film, etc. Features: Suitable for manufacturing thin silicone products, but with low production efficiency.

Adhesive molding:

Process description: Wrap silicone material onto other substrates (such as metal or plastic) and shape them through vulcanization. Applications: such as silicone hardware packaging, silicone plastic packaging, etc. Features: Provides additional protection and improves hand feel, but the process is complex and the cost is high.

3D printing:

Process description: Use 3D printing technology to print silicone material layer by layer. Application: Suitable for manufacturing silicone products with complex shapes. Features: High flexibility, suitable for small batch production, but high equipment and material costs.
Differences in craftsmanship

Compression molding: using pre formed silicone blocks. Injection molding: using silicone particles. Extrusion molding: using silicone strips or particles. Rolling forming: using silicone blocks. Encapsulation molding: using liquid silicone gel. 3D printing: using silicone printing materials.

Processing technology of silicone products

Equipment requirements: Compression molding: requires a compression molding machine and mold. Injection molding: requires injection molding machines and molds. Extrusion molding: requires an extruder and mold. Rolling forming: requires rolling machines and molds. Rubber molding: requires a vulcanizing machine and mold. 3D printing: A 3D printer is required.

Production efficiency: Compression molding: Medium, suitable for large-scale production. Injection molding: High, suitable for large-scale production. Extrusion molding: high, suitable for continuous production. Rolling forming: Low, suitable for small batch production.

Adhesive molding: Medium, complex process. 3D printing: Low, suitable for small batch production.

Product complexity: Compression molding: Suitable for simple shapes. Injection molding: suitable for complex shapes. Extrusion molding: suitable for tubular or strip-shaped products. Rolling forming: suitable for thin sheets or films. Encapsulation molding: suitable for complex shapes, providing additional protection. 3D printing: suitable for complex shapes.

Cost considerations: Compression molding: lower cost. Injection molding: The equipment cost is relatively high. Extrusion molding: Medium cost. Rolling forming: Low cost. Encapsulation molding: high cost. 3D printing: Equipment and material costs are relatively high.
Each process has its unique advantages and scope of application, and the choice of process depends on factors such as product design requirements, performance requirements, and production costs. If you need further assistance or have specific questions, please feel free to contact me at any time.

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What are the factors that affect liquid silicone molding?

Liquid silicone integrated molding can achieve environmental protection and sustainable development.

There are many influencing factors for liquid silicone integrated molding, from raw material quality, molding temperature, mold structure to environmental temperature, each link may have a profound impact on the final molding effect.

First of all, the composition and properties of silica gel will directly affect the effect of integrated molding. The viscosity, fluidity, curing speed, hardness and other characteristics of silica gel will affect the molding process. High-quality silica gel raw materials usually have good fluidity and toughness, which can ensure that the silicone can be successfully filled in the mold during the molding process, while maintaining good physical properties after the molding. The poor quality of silica gel raw materials may lead to bad phenomena such as fractures and bubbles in the molding process, affecting the molding quality.

Secondly, the molding temperature, humidity and other environmental conditions will also affect the liquid silicone integrated molding. Especially in the curing stage, the control of environmental conditions is crucial to the quality of the molded product. Under normal circumstances, the viscosity of silica gel will decrease with the increase of temperature, and the fluidity will increase. Therefore, it is necessary to reasonably control the molding temperature during the molding process to ensure that the silicone can fully fill the mold and avoid gaps or bubbles. At the same time, too high molding temperature may also lead to silicone aging or burning, affecting the quality of the finished product.

Liquid silicone integrated molding can achieve environmental protection and sustainable development.

In addition, the design and manufacturing quality of the mold is crucial to the liquid silicone integrated molding. The surface finish of the mold, dimensional accuracy, exhaust system design, etc., will affect the quality of the molded product. The design of the mold should take into account the fluidity and molding characteristics of the silicone to ensure that the silicone can be successfully filled to each fine part. Molds with more complex structures may require higher molding temperatures to ensure that the silicone can be filled to every corner. At the same time, the material and surface roughness of the mold will also have an impact on the molding quality.

Finally, the ambient temperature is also a factor that can not be ignored affecting the integrated molding of liquid silicone. In the winter or low temperature environment, the fluidity of silica gel may be reduced, resulting in molding difficulties or adverse phenomena. Therefore, in the production process, the molding temperature and process parameters need to be reasonably adjusted according to the change of environmental temperature to ensure stable molding quality. In addition to the above factors, liquid silicone integrated molding may also be affected by other factors, such as molding pressure, vulcanization time, etc. These factors need to be adjusted and optimized according to the specific production conditions and product requirements to ensure the best quality and performance of the final product.

To sum up, there are many influencing factors of liquid silica gel molding, and it is necessary to comprehensively consider raw material quality, molding temperature, mold structure, environmental temperature and other factors in the production process, and ensure that the final molding effect reaches the best state through reasonable process parameter adjustment and control. Liquid silicone integrated molding using liquid silicone fluidity and formability, simplify product structure, improve production efficiency. This technology can realize the sealing of complex structures, reduce assembly errors, reduce costs, achieve material diversity, environmental protection and sustainability, and is widely used in automotive, electronics, medical and other fields, with broad prospects.

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