By vantal The manufacturing process of silicone products mainly includes the following steps:If you want to make a big difference in the market, custom rubber seals It is necessary to intensify the upgrading of products on the original basis in order to meet the consumption needs of consumers. https://www.ascendseal.com
1. Raw Material Preparation
Silicone Material: Selection of suitable solid or liquid silicone rubber.
Additives: Addition of pigments, vulcanizing agents, plasticizers, etc., as needed to enhance performance or appearance.
2. Mixing
Uniformly mix the silicone and additives in a mixer to ensure consistent material properties.
3. Molding
Compression Molding: Place the mixed silicone into a mold and shape it by heating and pressing.
Injection Molding: Liquid silicone is injected into the mold using an injection machine, suitable for complex shapes.
Extrusion Molding: Silicone is extruded into strips or tubes through an extruder and then cut to the required length.
Calendering: The silicone is calendered into sheets for making films or sheets.
4. Vulcanization
Vulcanization is carried out under high temperature and pressure to cross-link and cure the silicone, enhancing its elasticity and durability.
5. Post-Processing
Trimming: Remove burrs and excess material.
Surface Treatment: Apply coatings, printing, or polishing to improve performance or appearance.
Secondary Vulcanization: Some products require secondary vulcanization to further enhance performance.
6. Quality Inspection
Dimensional Inspection: Ensure compliance with design specifications.
Performance Testing: Includes temperature resistance, pressure resistance, tensile strength, hardness, and other tests.
7. Packaging
After passing inspection, clean and package the products for shipment.
Key Process Controls
Temperature and Time Control: Ensure complete vulcanization.
Mold Precision: Guarantee accurate dimensions and shapes.
Material Uniformity: Avoid performance fluctuations.
Application Fields
Medical Industry: Such as silicone catheters, seals, etc.
Food Industry: Such as silicone kitchenware, food-grade seals, etc.
Electronics Industry: Such as buttons, seals, etc.
Automotive Industry: Such as seals, gaskets, etc.