Are you looking for the best injection molded rubber factories in China? If so, you’re in the right place. In this article, we’ll compare the top players in the industry, highlighting their strengths, specialties, and what sets them apart. Let’s dive into the world of Chinese rubber injection molding and find the perfect fit for your needs.

Top 10 Rubber Injection Molding Companies and Suppliers in …

Product Details: Hongju specializes in Liquid Silicone Rubber (LSR) Injection Molding, producing high-precision silicone rubber products. The services include manufacturing of intricate medical components, keypads, O-ring seals, gaskets, rubber feet, and rubber grommets. They offer rapid prototyping, handling of custom designs, and production of minimum to medium quantity orders with short lead times and competitive market rates. The LSR material is versatile, flexible, and resistant to chemical reactions, making it ideal for machine parts, household appliances, and medical equipment. The injection molding process allows for the production of complex designs with minimal waste and high repeatability[1][2][4].

Pros:
– High-precision silicone rubber products
– Rapid prototyping and handling of complex designs
– Short production lead times and competitive market rates
– ISO 9001:2015 certified and compliance with CE and FDA standards
– Minimal waste and high repeatability in production
– 24/7 customer support by expert engineers
– Support for multiple CAD formats and round-the-clock production

Cons:
– Potential additional costs for modifications to production molds
– Limited geographical flexibility for factory inspections due to epidemic restric…
– Production time can vary based on order quantity and complexity

Rubber Molding | Rubber Extrusion | Liquid Silicone Extrusion …

Product Details: Rubber extrusion and molding involve creating rubber parts through various processes. Rubber extrusion produces two-dimensional parts with continuous lengths by pushing unvulcanized rubber through a die, shaping it into the desired profile. Rubber molding, including compression, injection, and transfer molding, creates three-dimensional shapes using heat and pressure. Common materials include Buna, Nitrile, Neoprene, Viton, EPDM, Silicone, and Hypalon. These products are used in applications such as sealing, noise control, vibration, and decorative trim across industries like automotive, construction, and industrial manufacturing[1][2][5].

Pros:
– High versatility in creating complex shapes and profiles
– Efficient production process, especially for large-scale runs
– Ability to customize compounds for specific performance requirements
– Strong and durable products with enhanced structural integrity
– Wide range of applications across various industries

Cons:
– Requires specialized equipment and expertise
– Can be more expensive for small production runs
– Limited to the shape and size defined by the die or mold
– Post-processing may be necessary for some applications

Custom Rubber Injection Molding Service

Product Details: Jiangzhi offers custom rubber injection molding for both low-volume and end-use production. The process uses steel as the tooling material to ensure mold durability, with mold costs starting at $500. The service includes single or multi-cavity molds, with unlimited mold life and permanent mold storage. General tolerances are normally +/- 0.008in. (0.2mm). Various elastomers are available, including silicone, EPDM, Nitrile, Neoprene, SBR, Natural Rubber, Butyl Rubber, and Viton. Finishing options include high glossy, semi-glossy, matte, and textured finishes.

Pros:
– Durable and precise rubber components
– Variety of elastomers available for different applications
– Low mold costs starting at $500
– Unlimited mold life with permanent storage
– Multiple finishing options

Cons:
– General tolerances may be less precise than some other services (+/- 0.008in.)
– Limited information on lead times and production speeds

Rubber Injection Molding Services

Product Details: Richfields Corporation offers rubber injection molding services, specializing in materials such as TPE (Thermoplastic Elastomers) and TPV (Thermoplastic Vulcanizates). The company provides custom and standard molded rubber parts for various applications, including consumer, FDA, and industrial uses. Their services are supported by experienced engineering and production teams that assist in resolving tooling and production concerns. The company is based in China and emphasizes production flexibility and cost efficiency.

Pros:
– Expertise in TPE and TPV materials
– Production flexibility and cost efficiency
– Support from experienced engineering and production teams
– Ability to supply parts for diverse applications including consumer, FDA, and in…

Cons:
– No specific cons mentioned on the website
– Potential language or communication barriers due to the company being based in C…

Custom Rubber Mould Manufacturer Injection …

Product Details: Melon Rubber and Silicone specializes in custom molded rubber and silicone products, including Liquid Silicone Rubber (LSR) injection molding, compression molding, overmolding, and custom rubber seals and gaskets. They offer a wide range of products such as gaskets, O-Rings, seals, connectors, valves, bumpers, tubes, housings, plugs, knobs, and sleeves. Their services include design assistance, prototype development, mass production, and post-production services like deburring, polishing, and assembly. They use advanced CAD software and tooling processing technology to create high-precision molds.

Pros:
– Rapid prototyping and production with turnaround times as short as 5-7 days
– Free Design for Manufacturability (DFM) analysis and design support
– High-quality products with ISO9001 certified quality control
– Cost-effective solutions with competitive factory prices
– Value-added services including bar coding, assembly, oil spray, UV coating, and…
– Extensive experience with over 12 years in the industry

Cons:
– Lead times can be longer during peak seasons (3-6 months)
– Minimum order quantities may apply

injection molding rubber in china

Product Details: Injection molding rubber in China involves the production of parts from various rubber materials, including natural rubber, synthetic thermoplastic rubber, and silicone. Natural rubber is derived from latex trees, primarily in Thailand and Vietnam, and undergoes a process of tapping, coagulation, and calendaring before being dried and processed. Silicone rubber is used in liquid injection molding (LIM), where the silicone fluid is mixed with agents and heated or vulcanized to create the final product. This process is crucial for producing precise rubber parts used in medical equipment, automotive components, and mechanical tools. The molds are made from materials such as

steel and aluminum to ensure high precision and consistency in the produced parts.

Pros:
– High precision and consistency in produced parts
– Ability to create complex and precise rubber components for various industries s…
– Use of advanced materials like silicone for liquid injection molding
– Ensures uniformity in replacement parts, making maintenance easier

Cons:
– The process involves multiple steps, including tapping, coagulation, and calenda…
– Requires specialized machinery and equipment, such as press shops and injection…
– The cost of producing high-quality molds and parts can be expensive due to the u…

Liquid Silicone Rubber China LSR injection molding

Product Details: Liquid Silicone Rubber (LSR) injection molding is a process to produce pliable, durable parts in high volume. LSR is a high-purity platinum-cured silicone with low compression set, good stability, and the ability to resist extreme temperatures of heat and cold. It is suitable for producing parts such as seals, sealing membranes, electric connectors, and infant products where smooth surfaces are desired. The process involves mixing two compounds (base-forming silicone and platinum catalyst) in a 1 to 1 ratio, which are then injected into a heated mold cavity and cured. LSR materials range from 10 to 80 durometer Shore A and

are supplied in barrels, allowing for consistent and high-volume production[2][5][4].

Pros:
– High-volume production with consistent part quality
– Excellent fluidity and ability to fill thin cross sections and tight radii
– Resistant to extreme temperatures (-60°F to 400°F)
– Good stability, low compression set, and high tear and tensile strength
– Chemical resistance to water, oxidation, and some chemical solutions
– Minimal waste production and environmentally friendly
– Fast cure cycles (30 seconds to 2 minutes) compared to compression molding
– Reduced tooling costs and lead times due to fewer cavities needed

Cons:
– Custom colors may require additional hardware, increasing costs (e.g., $3500 for…
– Tooling design and fabrication require high-temperature resistance and specific…
– Higher initial investment in specialized injection molding presses
– Limited to thermosetting properties, meaning parts cannot be melted and reformed…

LSR Injection Moulding from China manufacturer

Product Details: Liquid Silicone Rubber (LSR) injection molding involves mixing a two-component compound, which is then heat-cured in a mold with a platinum catalyst. The process uses high-temperature tools fabricated via CNC machining. LSR is a thermosetting material, meaning it cannot be melted again after curing. It is popular in medical, automotive, and other industries due to its high temperature resistance, UV and ozone resistance, and electrical insulation properties. LSR parts can range from 10 to 80 durometer Shore A and are known for their flexibility and durability.

Pros:
– High temperature resistance (-110°C to +350°C)
– UV and ozone resistance
– Electrical insulation
– Flexible and durable
– Quick cycle time and fast curing
– Minimal material waste due to flashless molds
– Low chance of contamination in automated processes
– Suitable for medical, automotive, and various other applications

Cons:
– Requires high-temperature tools which can be costly
– Production tooling can be the lengthiest and most capital-intensive step
– Mold design and production require high precision and accuracy
– Limited to thermosetting properties, meaning parts cannot be melted and reused

Injection Molding China

Product Details: Richfields Corporation offers precision and efficient injection molding services in China. The company specializes in producing a wide range of plastic products, from everyday items to custom prototypes, using various techniques such as thin wall molding, co-injection molding, and gas-assisted injection molding. They utilize advanced machinery and technical expertise to ensure high-precision and quality components. Services include 3D modeling, mold layout design, unscrewing plastic injections, and post-processing services like spray painting, printing, and assembly. Richfields serves multiple industries, including automotive, sports, consumer products, rubber, toys, home and kitchen products, and tools.

Pros:
– Cost-effective manufacturing solutions
– Advanced technology and expertise
– Competitive pricing
– High-precision and quality components
– Streamlined operations and well-maintained equipment
– Versatile techniques such as thin wall molding, co-injection molding, and gas-as…
– Wide range of post-processing services
– Global client base with export capabilities to the U.S.A. and other countries
– ISO and IATF certified, ensuring quality and compliance

Cons:
– No specific cons mentioned on the website
– Dependence on international logistics for export, which can be subject to extern…

Silicone Rubber Transfer Injection Molding

Product Details: Rubber Transfer Molding, also called Transfer-injection Moulding, is a process using hydraulic press (rubber compression molding machines) with a slightly different mold structure design compared to rubber compression molding. It is ideal for over-molded (metal, plastic) components, tighter control of dimensional tolerance, and medium-precision or complicated structure rubber components such as cylinder-shaped products like nozzles, thin bellows, or tubing.

Pros:
– Tighter control of dimensional tolerance
– Suitable for over-molded (metal, plastic) components
– Ideal for medium-precision or complicated structure rubber components
– Reduces material waste
– Allows for precise control over the amount of material in the mold

Cons:
– Requires preformed raw material preparation into pre-forms
– Can result in more waste as the rubber remaining after transfer will cure and ha…

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About Injection Molded Rubber Factories in China

What are the common rubber molding processes used in Chinese factories?

Chinese rubber molding factories typically use several processes, including compression molding, transfer molding, and rubber injection molding. Compression molding is ideal for low to medium production volumes and larger parts, while transfer molding is better for more complex products with tighter tolerances. Rubber injection molding is the most precise and cost-effective for high-volume production of small, intricate parts.

How long does it take to produce a rubber mold in China?

The lead time for producing a rubber mold in China can vary. For prototype tooling and samples, it usually takes around 7 days. For production molds, the lead time is typically 14 days. Some factories also offer fast mold design services, such as Design for Manufacturability (DFM) within 24 hours after receiving your drawings.

What are the benefits of using rubber injection molding?

Rubber injection molding offers several benefits. It is highly consistent, allows for tight tolerances, and has faster production times compared to other methods. This process is cost-effective, especially for high-volume production of small, intricate rubber parts. It also handles all rubber durometers and is suitable for producing smaller products with detailed designs.

What certifications should I look for in a Chinese rubber molding factory?

When selecting a Chinese rubber molding factory, look for certifications such as ISO 9001 for quality management, ISO 14001 for environmental management, and other relevant industry standards like IATF 16949 for automotive parts. These certifications ensure the factory follows strict quality and environmental controls.

Can Chinese rubber molding factories handle custom and complex designs?

Yes, many Chinese rubber molding factories are equipped to handle custom and complex designs. They use advanced technology and have experienced technical teams to design and manufacture molds for intricate products. Whether you need rubber gaskets, seals, o-rings, or other specialized parts, these factories can meet your specific requirements with high precision and quality.