By vantal The manufacturing process of silicone products mainly includes the following steps:If we can practice these points, custom rubber seals Will be unique, become a leader in the industry, and keep moving forward. 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.