Are you looking for the best liquid silicone molding factories in China? With so many options available, choosing the right one can be overwhelming. In this article, we’ll compare the top liquid silicone molding manufacturers in China, highlighting their unique strengths, product offerings, and what sets them apart. Let’s dive in and find the perfect fit for your needs.
Liquid Silicone Rubber China LSR injection molding
Product Details: Liquid Silicone Rubber (LSR) is a high-purity platinum-cured silicone with excellent fluidity. It is used in injection molding to produce high-volume, precise, and durable silicone rubber parts. The process involves mixing two compounds (base-forming silicone and platinum catalyst), which are then injected into a heated mold cavity and heat-cured. LSR has a low compression set, good stability, and resistance to extreme temperatures. It is commonly used for seals, electric connectors, infant products, kitchen goods, and various industrial applications.
Pros:
– Provides ease of processing and high-volume production
– Ensures consistent part quality with minimal variation
– Offers high precision and intricate part details
– Minimizes flash development and post-molding trimming
– Environmentally friendly with minimal to no waste production
– Excellent UV and ozone resistance and electrical insulation
– Suitable for a wide range of applications including medical, lighting, and autom…
Cons:
– Requires high-temperature resistant molds which can be costly
– The molding process involves complex steps and precise control
– Tighter tolerances may increase the cost of tooling
– Undercuts can increase the complexity and cost of tool ejection mechanisms
Rubber Molding | Rubber Extrusion | Liquid Silicone …
Product Details: Rubber extrusions are parts manufactured by forcing unvulcanized rubber through a die to achieve a specific cross-sectional shape. The process involves introducing rubber into a hopper, advancing it through a conveyor and screw system, and then through the die where it takes on the desired shape. These extrusions can be made from various materials such as EPDM, SBR, Silicone, Nitrile, and Neoprene, catering to different applications including sealing, noise control, vibration reduction, and decorative trim. Products range from simple rubber tubing to complex co-extruded profiles and include items like door and window seals, vibration reducers, and exhaust collars.
Pros:
– Allows for the creation of parts with highly complex cross-sections and continuo…
– Efficient process with minimal need for extra assembly, reducing weak spots and…
– Can be customized to fit specific applications and industries such as automotive…
– Provides cost-competitive solutions with short lead times.
– Offers a wide range of materials to meet various temperature, weather, and techn…
Cons:
– Limited to producing two-dimensional parts, which may not be suitable for all ap…
– Requires precise control over the extrusion process to ensure consistent quality…
– May not be as versatile as rubber molding for creating three-dimensional shapes.
Liquid Silicone Rubber & LSR Injection Molding …
Product Details: Liquid Silicone Rubber (LSR) is a two-component, platinum-curable silicone elastomer. It is characterized by its flowable nature, allowing it to be pumped into a mold and cured at elevated temperatures. LSR is used in various applications, including medical devices, automotive parts, and electrical components. It is processed through liquid injection molding, enabling the production of complex part geometries with precise dimensions and fast cycle times.
Pros:
– High biocompatibility, making it suitable for medical and skin-contact applicati…
– Excellent chemical resistance to water, oxidation, and various chemical solution…
– Wide temperature endurance, maintaining properties from -60°C to 250°C.
– Good mechanical properties, including high tear and tensile strength, and excell…
– Self-bonding options and compatibility with many plastics and metals.
– Fast cycle times and fully automated flash-less and trim-free manufacturing.
– Excellent electrical insulation and tracking resistance.
Cons:
– Requires specialized processing equipment due to its viscous nature and curing r…
– Higher production costs compared to some other elastomers, although this can be…
– May require additional additives or fillers to enhance specific properties for c…
Silicone Injection Molding from China manufacturer
Product Details: Liquid Silicone Rubber (LSR) injection molding is a thermoset process used to produce high volumes of pliable, durable, and precise silicone rubber parts. The process involves mixing two compounds (base-forming silicone and a platinum catalyst) which are then injected into a heated mold to cure. The molds are created using CNC machining and must be high-temperature resistant. LSR parts are used in various industries including medical, lighting, and automotive due to their UV and ozone resistance, electrical insulation, and flexibility[2][3][5].
Pros:
– High-volume production capability with consistent part quality
– Environmentally friendly with minimal waste production
– Excellent thermal, mechanical, and chemical resistance
– Suitable for intricate part design features and demanding applications
– Low chance of contamination due to automated processing
– Precise and consistent quality with minimal variation between parts
Cons:
– The production tooling can be the lengthiest step and requires significant capit…
– Tighter tolerances may increase the cost of tooling due to additional sampling a…
– The process requires specialized machines and high-temperature molds
Liquid Injection Molding of Liquid Silicone Rubber from …
Product Details: Liquid Silicone Rubber (LSR) injection molding is a thermoset process used to produce high volumes of pliable, durable, and precise silicone rubber parts. The process involves mixing two compounds (base-forming silicone and a platinum catalyst) which are then injected into a heated mold and cured. LSR is suitable for various applications including medical, lighting, automotive, and consumer products. It retains its properties up to 392°F and offers excellent UV and ozone resistance, as well as electrical insulation. LSR materials come in a range of durometers and grades, including medical-grade and fuel-resistant options.
Pros:
– High-volume production capability with consistent part quality
– Minimal waste production and reduced need for post-molding trimming
– Ability to produce intricate part designs with tight tolerances
– Excellent temperature resistance and flexibility
– Low chance of contamination due to automated processes
– Cost-effective compared to compression molding of gum-based silicones
– Tight control over dimensional tolerances
Cons:
– Production tooling can be the lengthiest and most costly step
– Requires specialized equipment and high-temperature molds
– Draft angles and highly polished finishes are not always necessary but may be re…
– Higher initial investment in tooling and machinery
Liquid Silicone Rubber Injection Molding – Umbrella Valve
Product Details: Liquid Silicone Rubber (LSR) injection molding is a thermoset process that involves mixing two compounds, A and B, which are then heat-cured inside a mold using a platinum catalyst. This process is suitable for manufacturing complicated geometries and combining multiple functional elements into a single part. LSR offers excellent optical clarity, durability, and design flexibility, maintaining good mechanical properties across a wide range of temperatures (-50°C to 250°C). The process uses a closed-loop system, ensuring no contamination of the material from the time it is fed into the machine until it is injected into the mold.
Pros:
– Produces medium- to high-volume rubber parts more efficiently and economically t…
– Shorter cycle time, typically between 30 seconds to 2 minutes, compared to compr…
– Flash-free tools, reducing de-flashing and trimming time.
– No need for pre-forms, eliminating excess material and flash around each cavity.
– Excellent fluidity, allowing it to fill thin-walled and complex areas of the mol…
– Superior compatibility with human tissue and body fluids, excellent chemical res…
– Ability to sterilize, making it suitable for medical and healthcare products.
– High tear and tensile strength, and a wide hardness range (5-80 Shore A).
– Process easily automated, and high production efficiency.
Cons:
– Once LSR cures, it cannot be molded again and cannot be recycled.
– High production time and cost, especially for startup and shutdown.
– Sticky feel if untreated, attracting dust and other particles.
– Not suitable for submerged applications in alcohol or gasoline.
– Inhibited curing when exposed to certain materials like sulfur and latex.
– Limited choice of material for the LIM process.
– Higher raw material cost compared to solid silicone rubber, though overall cost…
China Liquid Silicone Molding Manufacturer …
China Silicone Liquid Rubber
Product Details: Liquid Silicone Rubber (LSR) is a two-component system consisting of long polysiloxane chains reinforced with specially treated silica. It is a biocompatible silicone that can be pumped into a mold and cured to form a solid. LSR is processed through liquid injection molding and is known for its fast curing and low compression set. It is highly durable, resistant to heat, water, oil, and chemicals, and maintains its mechanical properties over a wide temperature range (-60°C to +250°C)[1][3][4].
Pros:
– Highly biocompatible, suitable for medical and prosthetic applications
– Durable and chemically resistant, ensuring long-term stability
– Wide temperature compatibility (-60°C to +250°C)
– Excellent electrical insulation properties
– Transparent and can be pigmented to match various colors
– Fast curing and low compression set
– High elasticity and compressibility
– Weatherability and resistance to UV, ozone, and radiation
– Efficient for high-speed processing and complex geometries
Cons:
– Requires special handling and mixing due to its thermosetting nature
– Needs intensive distributive mixing and low temperature maintenance before moldi…
– Limited to additive curing with platinum, which can be more expensive than other…
China Liquid Silicone Rubber Molding Manufacturers …
Product Details: Liquid Silicone Rubber (LSR) injection molding is a process used to produce pliable, durable parts in high volumes. It involves mixing two components, typically a base-forming silicone and a platinum catalyst, which are then injected into a heated mold where they cure to form the final product. The process is suitable for high-volume production and is used in various industries such as medical, electrical, and automotive. LSR parts are known for their high precision, UV and ozone resistance, and excellent electrical insulation properties[2][4][5].
Pros:
– High-volume production capability with consistent part quality
– Low viscosity allows for intricate part design features and minimal waste
– Excellent UV and ozone resistance and electrical insulation properties
– Suitable for demanding and critical use applications
– Automated processing reduces human error and contamination risk
– Minimal post-molding trimming or finishing operations required
Cons:
– Production tooling can be the lengthiest and most capital-intensive step
– Requires specialized equipment and high-temperature molds
– Material overheating and pressure increase can occur during the curing stage
– Design and manufacturing of molds must consider steel dilation and material shri…
Top 10 Silicone Rubber Mold Manufacturers and Suppliers in …
Product Details: Dongguan Hongju Silicone Rubber Products Co., Ltd. is a leading silicone rubber molding company with over two decades of experience in injection molding. The company uses materials such as synthetic rubber, silicone rubber, and natural rubber to create high-quality, precision rubber components. They manufacture molded rubber products for various industries, including automotive, food processing, and more. Hongju Silicone offers rapid prototyping using CNC machining within 3-5 working days and other capabilities like rubber extrusion, rubber tubing, injection molding, die cutting, and compression molding.
Pros:
– Over two decades of experience in injection molding
– Rapid prototyping facility using CNC machining within 3-5 working days
– Wide range of manufacturing capabilities including rubber extrusion, rubber tubi…
– Products comply with international safety standards such as CE, SGS, REACH, and…
– ISO 9001: 2008 quality management system certification
– Ability to manufacture products for diverse industries like automotive, food pro…
Cons:
– No specific cons mentioned in the provided sources.
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| Liquid Silicone Rubber China LSR injection molding | Liquid Silicone Rubber (LSR) is a high-purity platinum-cured silicone with excellent fluidity. It is used in injection molding to produce high-volume,… | – Provides ease of processing and high-volume production – Ensures consistent part quality with minimal variation – Offers high precision and intricat… | – Requires high-temperature resistant molds which can be costly – The molding process involves complex steps and precise control – Tighter tolerances… | qmolding.com |
| Rubber Molding | Rubber Extrusion | Liquid Silicone … | Rubber extrusions are parts manufactured by forcing unvulcanized rubber through a die to achieve a specific cross-sectional shape. The process involve… | – Allows for the creation of parts with highly complex cross-sections and continuo… – Efficient process with minimal need for extra assembly, reduci… |
| Liquid Silicone Rubber & LSR Injection Molding … | Liquid Silicone Rubber (LSR) is a two-component, platinum-curable silicone elastomer. It is characterized by its flowable nature, allowing it to be pu… | – High biocompatibility, making it suitable for medical and skin-contact applicati… – Excellent chemical resistance to water, oxidation, and various… | – Requires specialized processing equipment due to its viscous nature and curing r… – Higher production costs compared to some other elastomers, alt… | www.better-silicone.com |
| Silicone Injection Molding from China manufacturer | Liquid Silicone Rubber (LSR) injection molding is a thermoset process used to produce high volumes of pliable, durable, and precise silicone rubber pa… | – High-volume production capability with consistent part quality – Environmentally friendly with minimal waste production – Excellent thermal, mechani… | – The production tooling can be the lengthiest step and requires significant capit… – Tighter tolerances may increase the cost of tooling due to add… | www.lsr-molding.com |
| Liquid Injection Molding of Liquid Silicone Rubber from … | Liquid Silicone Rubber (LSR) injection molding is a thermoset process used to produce high volumes of pliable, durable, and precise silicone rubber pa… | – High-volume production capability with consistent part quality – Minimal waste production and reduced need for post-molding trimming – Ability to pr… | – Production tooling can be the lengthiest and most costly step – Requires specialized equipment and high-temperature molds – Draft angles and highly… | www.rubber-keypad.com |
| Liquid Silicone Rubber Injection Molding – Umbrella Valve | Liquid Silicone Rubber (LSR) injection molding is a thermoset process that involves mixing two compounds, A and B, which are then heat-cured inside a… | – Produces medium- to high-volume rubber parts more efficiently and economically t… – Shorter cycle time, typically between 30 seconds to 2 minutes,… | – Once LSR cures, it cannot be molded again and cannot be recycled. – High production time and cost, especially for startup and shutdown. – Sticky fee… | www.silicongasket.com |
| China Liquid Silicone Molding Manufacturer … | www.hongrita.com | |||
| China Silicone Liquid Rubber | Liquid Silicone Rubber (LSR) is a two-component system consisting of long polysiloxane chains reinforced with specially treated silica. It is a biocom… | – Highly biocompatible, suitable for medical and prosthetic applications – Durable and chemically resistant, ensuring long-term stability – Wide tempe… | – Requires special handling and mixing due to its thermosetting nature – Needs intensive distributive mixing and low temperature maintenance before mo… | www.siliconeliquidrubber.com |
| China Liquid Silicone Rubber Molding Manufacturers … | Liquid Silicone Rubber (LSR) injection molding is a process used to produce pliable, durable parts in high volumes. It involves mixing two components,… | – High-volume production capability with consistent part quality – Low viscosity allows for intricate part design features and minimal waste – Excelle… | – Production tooling can be the lengthiest and most capital-intensive step – Requires specialized equipment and high-temperature molds – Material over… | www.apa-proto.com |
| Top 10 Silicone Rubber Mold Manufacturers and Suppliers in … | Dongguan Hongju Silicone Rubber Products Co., Ltd. is a leading silicone rubber molding company with over two decades of experience in injection moldi… | – Over two decades of experience in injection molding – Rapid prototyping facility using CNC machining within 3-5 working days – Wide range of manufac… | – No specific cons mentioned in the provided sources. | hongjusilicone.com |
Frequently Asked Questions (FAQs)
Frequently Asked Questions About Liquid Silicone Molding Factories in China
What types of products can be made using liquid silicone rubber (LSR) molding in China?
Liquid silicone rubber molding in China can produce a wide range of products, including medical devices, automotive parts, kitchen tools, baby items, and industrial components. These products are known for their durability, heat resistance, and versatility, making them suitable for various applications such as medical implants, food-grade items, and electronic components.
What are the key advantages of using LSR molding?
The key advantages of LSR molding include batch stability, process repeatability, minimal waste, short cycle times, and high efficiency. Additionally, LSR products have high tear resistance and can be produced with precise accuracy. This process is also ideal for producing parts that require high precision and consistency.
How do Chinese LSR molding factories ensure product quality?
Chinese LSR molding factories ensure product quality through strict quality control measures. Many of these factories have acquired certifications such as FDA, SGS, CE, and ISO 9001. They use the latest technologies and skilled workers to maintain high standards. Products undergo thorough inspections before they are shipped out, ensuring they meet the required specifications and safety standards.
What kind of customization options are available for LSR molded products in China?
You can get highly customized LSR molded products in China. Many factories offer OEM and ODM services, allowing you to design and produce products tailored to your specific needs. From 3D design and tool-making to the final production, these factories handle everything to ensure your products are made exactly as you want them.
How quickly can prototypes and small batches be produced using LSR molding in China?
Prototypes and small batches can be produced quickly using LSR molding in China. Some factories offer rapid prototyping facilities using CNC machining, which can deliver prototypes within 3-5 working days. The LSR molding process itself is fast and efficient, making it ideal for small-batch and low-volume manufacturing needs.