Manufacturing two-color, two-hardness liquid silicone products usually requires the use of two different silicone materials and a secondary injection process. It may be difficult to achieve two-color, two-hardness silicone products without secondary injection, but in some cases, some special processing methods, such as silicone blending, can be used to achieve an approximate effect. Here is one possible approach:

Silicone Blending: Silicone blending is mixing two different silicone materials together to achieve a mixed color and hardness effect. This approach typically requires mixing at the material level rather than in the mold. This means you need to mix two different silicone materials together and inject them into the mold immediately after mixing.

Mold design: The mold needs to be designed in a shape that can inject two silicone materials at the same time. The mold should include two different silicone supply channels to ensure that both silicones can be injected and fill the mold at the same time.

Injection process: During the manufacturing process, two silicone materials should be injected into the mold at the same time. This requires strict control of the fluidity and mixing ratio of the silicone to ensure that the mixed color and hardness effects are achieved.

Silicone curing: Two silicone materials are solidified simultaneously in the mold to form a two-color, two-hardness silicone product. The curing time and temperature of silicone should be strictly controlled.

It should be emphasized that silicone blending is a complex process, and successful implementation requires a high degree of process control and a deep understanding of silica gel properties. In actual manufacturing, the secondary injection method is usually used to manufacture two-color and two-hardness silicone products, because this method is easier to control and can ensure the consistency and quality of the product. If you are considering a silicone blending process, consult a silicone manufacturing expert for more details and guidance.

The silicone-coated plastic molding process involves applying a layer of silicone to the surface of a plastic component to provide various properties, such as improved grip, protection, or aesthetics. Here are the key steps involved in the silicone-coated plastic molding process:

1. Design and Mold Preparation:

• Component Design: Begin by designing the plastic component that will be coated with silicone. Consider the size, shape, and areas where silicone coating is required.
• Mold Design: Create molds for the plastic component and the silicone coating. These molds will determine the final shape of both the plastic and silicone layers.

2. Material Selection:

• Plastic Material: Choose the appropriate plastic resin for the base component. The plastic should have good adhesion properties to the silicone.
• Silicone Material: Select a compatible silicone material for coating. The choice of silicone depends on the specific requirements, such as hardness, texture, and color.

3. Plastic Injection Molding:

• The plastic component is produced using injection molding. This involves melting the plastic resin and injecting it into the mold for the plastic part. The mold will include the areas where silicone will be applied.

4. Silicone Coating:

• Once the plastic part has been molded but is still in the mold, a layer of silicone is applied to the desired areas. This can be done using various methods, including:a. Liquid Silicone Injection: Silicone is injected into the mold over the plastic component. It fills the designated areas, adheres to the plastic, and takes the desired shape.

  b. Silicone Dip Coating: The plastic component is dipped into a bath of liquid silicone. The silicone adheres to the surface and forms a coating when cured.

  c. Compression Molding: The silicone is placed on top of the plastic part in the mold, and the mold is closed, causing the silicone to bond with the plastic.

5. Curing:

• The silicone-coated plastic component is then cured or vulcanized. This typically involves heating the mold to a specific temperature and holding it for a certain time. The curing process helps the silicone solidify and adhere to the plastic.

6. Cooling and Ejection:

• After curing, the mold is cooled to solidify the silicone coating. The finished silicone-coated plastic part is then ejected from the mold.

7. Quality Inspection:

• The silicone-coated plastic components are inspected for quality, including checking for any defects, adhesion issues, or other imperfections.

Silicone-coated plastic molding is used in various industries, such as consumer electronics, medical devices, automotive components, and more. The process allows for the combination of the durability and versatility of plastic with the desirable properties of silicone, such as enhanced grip, protection, or resistance to environmental factors.

Liquid silicone processing technology refers to adding liquid silica gel material through a specific production process Work into products of different shapes and sizes. Liquid silicone is a material with high elasticity, excellent heat resistance, and weather resistance, so it is widely used in aviation, automobile, medical, electronics, and other fields.

The main processes of liquid silicone processing include molding, injection molding, spraying, coating, laminating, etc.

Among them, molding is a commonly used processing method, which uses a mold to press and shape liquid silicone to form a product with a certain size and shape. Injection molding is to inject liquid silicone into the mold and curing it under high temperature and high pressure. Spraying, coating, and bonding are to spray, coat, and bond liquid silicone on the surface of the required material to form a product with certain wear resistance, corrosion resistance, and high-temperature resistance.

Liquid silicone processing technology has the characteristics of a simple process, low cost, and high production efficiency.

Customized production can be carried out according to different needs, and it is suitable for the manufacture of various products.

Ultra Clear Optical Silicone:

Can silicone be used as an optical material? What is Optical Silicone? Optical Silicone is a specially formulated silicone material designed to transmit light with minimal distortion. In this blog, we will introduce you to the concept, benefits, and applications of optical silicones.

What is Optical Silicone？

Optical silicone is a type of silicone material that has been formulated to have excellent optical properties. It can transmit light very well while maintaining its clarity and transparency over time. Not only does it have the advantage of traditional optical materials such as glass or thermoplastic (PC, PMMA), but it can also be used in applications where traditional optical materials cannot meet the required optical specifications.

To improve the durability and transmission of lighting products, optical silicone can be a solution.

So what’s so special about optical silicone?  Next, I will introduce you to the advantages of optically clear silicone.

Benefits of Optically clear silicone:

Optical silicone is a highly durable material. Unlike thermoplastic, which can easily scratch or break, optical silicone is highly resistant to damage. Optically clear silicone can withstand extreme temperatures ( -40℃ to 250℃), harsh chemicals ( acid, alkali), and other environmental factors that can damage it. This makes it an ideal choice for applications where the material will be exposed to harsh conditions or frequent use.

High Refractive Index and Excellent Optical Clarity:

Optical silicone has a high refractive index. It means it bends light more effectively, resulting in brighter and more efficient lighting. Optically clear silicone also has excellent light transmission and it is a very transparent material. It allows for the maximum amount of light to pass through, creating brighter and more vibrant lighting.

Color Stability:

Optical Silicone is not easy to yellow during use. As can be seen in the chart below, optical silicone has excellent color stability and is not prone to yellowing in different control experiments. Optical silicone maintains its clarity and color stability even after years of use.

The odorless and tasteless properties of liquid silicone rubber (LSR) combine seamlessly with its inherent
mold and bacteria resistance, creating a safety shield against unwanted contaminants. With LSR’s
hydrophobic nature resisting moisture and its easy cleaning, it provides a barrier of protection that
safeguards the integrity of your food-related products.

LYASILICONE utilizes an extensive array of high-quality, food-grade elastomers. To ensure we have
an uninterrupted supply of high quality certified materials, we source materials from our longstanding
network of suppliers that are the top material manufacturers worldwide. With a thorough evaluation
of your project’s timelines and cost objectives, and an understanding of your product specifications
and performance requirements, our seasoned experts will provide a solution tailored to meet your specific needs.