Two-color liquid silicone mold requires a series of precise design and technical measures to ensure color separation, so that different colors of silicone do not interfere with each other during the molding process, so as to obtain clear color boundaries. The following is a detailed analysis and measures:
Mold design:
Separation area: Two-color liquid silicone mold has clear separation areas inside, each corresponding to a different color. These separation areas are designed and manufactured with high precision to ensure that they do not penetrate each other when silicone is injected.
Feed port and flow channel: Each color area has an independent feed port and flow channel for injecting liquid silicone of the corresponding color. The design of the feed port and flow channel should take into account the fluidity and viscosity of the silicone to ensure that the silicone can be evenly and quickly filled into the mold.
Injection molding process:
Sequential injection: During the injection molding process, the first color of liquid silicone is injected first, and after it is partially cured, the second color of liquid silicone is injected. This sequential injection method ensures a clear boundary between the two colors.
Control injection speed and temperature: The injection speed and temperature have an important influence on the fluidity and curing speed of silicone. By precisely controlling these parameters, it is possible to ensure that the silicone is evenly distributed in the mold while avoiding color mixing.
Mold material and sealing:
Mold material: The mold is usually made of high temperature and corrosion resistant materials to ensure that it will not deform or be damaged during silicone injection and curing.
Sealing: The sealing between the separated areas is crucial to ensure color separation. Special attention should be paid to this during the design and manufacturing of the mold to ensure good sealing to prevent silicone leakage or mixing.
Mold maintenance and cleaning:
Regular cleaning and maintenance of the mold can ensure its normal operation and extend its service life. Especially between color changes or production batches, the mold should be thoroughly cleaned to avoid residues affecting the production quality of the next batch.
In summary, through precise mold design, optimized injection molding process, high-quality mold material and sealing, and regular maintenance and cleaning, Two-color liquid silicone mold can effectively ensure color separation and produce silicone products with clear color boundaries.
