Different silicone sheet colors are usually achieved by adding different pigments or color masterbatches. Understanding the knowledge related to the colors of silicone sheets can help you match customer needs and handle orders from different industries.
This article will introduce the popular colors of silicone sheets and their corresponding industry applications. We hope it will be helpful for your business.
The Mainstream Color Choices for Silicone Sheets
Due to daily production experience, different industries have different requirements of the color of silicone sheets, which directly affects the way your users perceive the product.
Moreover, there are significant differences in color selection for different functions of silicone sheets. Therefore, you need to use colors correctly. This is helpful for your enterprise to build a good brand reputation. Below is the summary of the commonly used colors of silicone sheets and their industry applications:
Transparent Silicone Sheet
This transparent silicone sheet is commonly used in industries such as healthcare, food, electronics, aerospace, and automotive. Due to its high transparency, it generally contains no pigments and only carefully controlled fillers to maintain transparency.
Transparent silicone sheets are commonly selected in food and medical applications because they allow visual inspection and provide a clean appearance.You can use it in medical and food processing equipment, high-temperature industrial gaskets, electronic device seals and protective covers.
They are resistant to high temperatures and have chemical inertness and biocompatibility. High transparency offers visibility, not only meeting aesthetic requirements, but also facilitating equipment maintenance and quality inspection. Therefore, you can also use it as a non-marking, durable material.
Translucent Silicone Sheet
A translucent silicone sheet refers to a silicone sheet that allows some light to pass through, but is not completely transparent. You can produce a nearly transparent effect using high-purity materials, but translucent silicone usually contains fillers that scatter light. Instead, it presents a milky white appearance.
If you are in the food, medical, automotive, and construction industries, you can use translucent sheets to cover cracks and scratches and other flaws.
Black Silicone Sheet
The black silicone sheet features durability, heat resistance and flexibility. It can be used in various industrial and construction fields such as electrical insulation, sealing and gaskets, heat-resistant surfaces, and vibration reduction.
A few medical or food-grade applications may also use it, but you need to ensure that the related black silicone sheet products meet the compliance requirements.
In the automotive and construction industries, black usually indicates suitability for high-performance applications. Therefore, you will find that the black silicone sheet has enhanced properties such as UV stability and oil resistance.
Carbon black is a commonly used coloring agent for black silicone sheets. It has reinforcing properties and enhances the wear resistance and anti-aging capabilities.
White Silicone Sheet
White silicone sheets have a wide range of applications and typically possess the characteristics of being non-toxic, flexible, and resistant to extreme temperatures.
White silicone sheets that comply with food contact regulations such as FDA 21 CFR 177.2600 and EU 1935/2004 can be used in the food industry, for example, in baking mats and conveyor belts.
Seals and protective covers in the medical field, insulation materials for household appliances, gaskets, seals, and insulation layers in industrial applications can all use them.
If you are in the construction industry and need a visually appealing and clean appearance, you can also use white silicone sheets for sealing in kitchens, bathrooms, and glass facades.
You can use titanium dioxide, an inorganic white pigment, which not only has strong covering power but also has a certain reinforcing effect.
Red Silicone Sheet
High-quality red silicone sheets possess flexibility, durability and high-temperature resistance, typically withstand temperatures up to 200°C–260°C depending on the formulation.
They can be widely used in commercial and industrial fields such as automobiles, marine, medical and food services, for applications like gaskets, seals, vibration and buffering components, etc.
Because the color red is bright and easy to identify, it is suitable for laboratory applications, facilitating quick differentiation of various components. Or it can be distinguished from other materials, suitable for various DIY handcrafts, making it convenient for you to meet the identification and manual processing requirements of different customers.
Blue Silicone Sheet
The blue silicone sheet is likely to be more widely used in applications such as food, pharmaceuticals and clean rooms. You can use it as a metal detection sealant and gasket because of its distinct color, which makes it easy to quickly detect component fractures.
If you use the blue silicone sheet that can withstand high-temperature environments in the automotive industry, it can be used as engine gaskets because it can improve visual identification.
You can use ultramarine blue, a traditional inorganic pigment, which can eliminate the yellow light of the white rubber and has a tinting effect.
Orange Silicone Sheet
The orange silicone sheet, like the previously mentioned red silicone sheet, has outstanding heat resistance properties. Both are often colored using iron oxide or other heat-resistant pigments. And the inorganic pigment, which has high covering power, does not migrate or flake off in the silicone.
It can be widely applied in industries such as manufacturing, food processing, and automobiles, for uses such as gaskets, seals, shock absorbers, and heat sealing.
Gray Silicone Sheet
When high temperature resistance, UV protection, ozone resistance and chemical inertness are required, you can use gray silicone sheets for industrial, automotive seals and gaskets.
Some gray silicone sheets may not be approved by the FDA, but they can withstand extreme temperatures ranging from -75°C to 230°C (-103°F to 450°F) and the ability to function in outdoor environments.
If your requirements for the physical properties of the silicone sheets are not high, grey silicone sheets can be an economical choice for you in low-risk applications.
How to Choose the Right Silicone Sheet Colors?
Product Function
To select the correct color of the silicone sheet, the first thing to consider is the color function of the product. Different applications have different requirements for the color of the silicone sheet.
If it is related to safety, such as for high-performance applications that require regular maintenance and replacement, we recommend using bright and noticeable colors, such as red, blue, etc. If your customers are using professional equipment or in an enterprise environment, neutral tones may be more suitable, such as gray, white, black, etc.
Or, in industries like medicine and food that place greater emphasis on safety, transparent and translucent silicone sheets make visual inspection easier.
Target Audiences
Different consumer groups have different preferences for colors. If your product is designed for children, you can choose bright and interesting colors such as yellow and green; while adults prefer more delicate and soft colors like pink and purple.
Apart from single-color silicone products, multi-color items may be more favored by younger groups, such as marble-pattern or striped silicone sheet products, which are unique and artistic.
Application Environments
The application environment of the silicone sheet also affects the choice of color. If your product is intended for outdoor use, it needs to be resistant to sunlight and other environmental factors without fading. You can use inorganic pigments, although these colors are not very bright, they are stable and reliable in performance.
While organic pigments are more suitable for indoor-used silicone sheet products, and the colors are also more vivid. The quality of the pigments has a significant impact on the color of the product.
FAQ
Why Do Silicone Sheets Vary Widely in Price Based on Different Colors?
The price difference among products of the same quality but different colors mainly results from the varying costs of pigments. For instance, some inorganic pigments contain precious metal elements, which are much more expensive than carbon black.
Moreover, some silicone sheets use relatively cheaper organic pigments during production. To prevent them from migrating, the processing techniques and formulas require higher standards, thus increasing the cost naturally.
Do Colors Affect the Physical Properties of Silicone Sheets?
Some of them will have an impact. For example, carbon black has reinforcing properties and can enhance the wear resistance of your silicone sheet.
Iron oxide pigments, however, usually do not change the basic physical properties of silicone rubber, such as hardness and tensile strength, but exhibit excellent thermal stability and color retention at elevated temperatures.
This enables it to maintain excellent physical and mechanical properties over a long period of time at high temperatures. Most pigments have no significant negative impact on the basic physical properties of the silicone sheet.
Will Silicone Sheet Colors Fade or Migrate to Contact Materials?
The color stability of the silicone sheet depends on the type of pigment used and the processing method. If your silicone sheet uses inorganic pigments, it generally offers better color stability and migration resistance. Organic pigments may have the risk of migration when exposed to oils, solvents, or high temperatures for a long time.
However, you can minimize these issues by pre-dispersing the color masterbatch and using a strict curing process.
Does the Color of Silicone Sheets Turn Yellow After Long-Term Usage?
Yes. Long-term exposure to ultraviolet radiation and high temperatures can cause the degradation and yellowing of silicone materials, but it has nothing to do with the specific color. You can add UV inhibitors, antioxidants, or use platinum-cured silicone to delay the color change.
Do Custom Silicone Sheet Colors Cost More Than Standard Ones?
Generally speaking, custom colors are more expensive. This is because they require color and silicone formula development, which involves a lot of labor and materials. Moreover, additional costs may be incurred for independent testing to meet safety standards. These are all extra expenses you need to bear.
Final Thoughts
Legensilico is a professional silicone manufacturer in China. We have 8 advanced assembly lines, which can meet your orders of various specifications. If you need silicone sheets of different colors, we also offer customization services. You can contact us to customize the color and size according to your requirements.
