CNMOULDING: Professional Soft Rubber Product Solutions Provider

 As a company specializing in soft rubber product design, mold development, and manufacturing, CNMOULDING leverages extensive industry experience and technical expertise to provide one-stop soft rubber product solutions, including customized production using various materials such as silicone, TPU, and TPE.  

CNMOULDING’s Core Advantages  

one. Diverse Material Options to Meet Various Needs

We offer a wide range of soft rubber materials, including:  

Food-grade silicone (FDA/LFGB compliant, suitable for baby products and kitchenware)  

High-elasticity TPU (wear-resistant, tear-resistant, ideal for sports gear and industrial components)  

Eco-friendly TPE (recyclable, low hardness, perfect for medical devices and electronic accessories)  

Special-performance soft rubber (custom options for high-temperature resistance, flame retardancy, conductivity, etc.)  

two. Precision Mold Development Ensures Product Quality  

High-precision CNC machining and 3D printing mold flow analysis optimize mold structure  

Support for multi-cavity and stack mold designs to improve production efficiency  

Capable of producing ultra-thin soft rubber parts (as thin as 0.2mm)** to meet high-precision requirements  

three. Advanced Manufacturing Processes Guarantee Performance  

Liquid Silicone Rubber (LSR) Injection Molding—Ideal for high-precision medical and electronic components  

Solid Silicone Compression Molding—Suitable for high-temperature kitchenware and seals  

TPU/TPE Injection Molding—Used for anti-slip grips, sports protectors, etc.  

Overmolding (Two-Shot Molding)—Combines hard and soft rubber for enhanced functionality  

four. Strict Quality Control Complies with International Standards  

ISO 9001 certification ensures standardized production processes  

RoHS/REACH compliance testing meets export requirements  

Physical performance testing (tensile strength, tear resistance, temperature resistance, etc.)  

Why Choose CNMOULDING?

End-to-end support from design to mass production—DFM (Design for Manufacturability) analysis optimizes product structure  

Rapid prototyping and small-batch production—Shortens product development cycles  

Cost-optimized solutions—Material selection and process improvements reduce overall costs  

Global logistics support—Stable supply chain for markets in Europe, America, Asia, and beyond  

Contact Us for Professional Soft Rubber Solutions!  

TEL: 86-21-52913487

FAX: 86-21-59907980

WhatsApp/Wechat: +8613061707408

Email: webmaster@cnmoulding.com  

CNMOULDING—Your Trusted Soft Rubber Manufacturing Partner!

CNMOULDING -- Professional TPE Injection Molding Solutions Provider

 CNMOULDING is a high-tech enterprise specializing in TPE (thermoplastic elastomer) injection molding, committed to offering customers comprehensive one-stop services ranging from material development, mold design, injection molding to finished product assembly. Equipped with advanced production equipment, a stringent quality control system, and extensive industry expertise, we have established long-term partnerships with numerous internationally renowned brands.  

Core Advantages  

One. Advanced TPE Injection Molding Technology  

    Utilizing all-electric injection molding machines and high-precision molds to ensure consistent product dimensions and smooth surface finishes.  

   Supporting Overmolding and 2K Molding processes, achieving robust bonding between TPE and materials such as PP, ABS, and PC.  

   Customizable TPE materials with varying hardness levels (Shore A 0-100), color options, transparency, and specialized properties (e.g., flame retardancy, UV resistance, oil resistance, etc.).  

Two. Rigorous Quality Control  

   Certified under the ISO 9001 quality management system to ensure standardized production processes.  

   Conducting comprehensive testing throughout the entire production cycle, including physical property evaluations (tensile strength, tear resistance, rebound resilience, etc.) and environmental compliance assessments (ROHS, REACH, FDA).  

   Providing PPAP (Production Part Approval Process) and IQC/OQC quality control measures to meet the stringent requirements of industries such as automotive and medical.  

Three. Swift Response and Flexible Production 

   Capable of supporting small-scale trial production to large-scale mass production, adapting flexibly to customer demands.  

   Featuring an in-house mold workshop that offers mold design, development, and optimization services to expedite delivery timelines.  

   A fully integrated supply chain ensures a stable supply of raw materials while minimizing production costs.  

Application Fields of TPE Injection Molding  

Automotive Components: Sealing strips, dust covers, interior components.  

Electronics and Appliances: Cable sheaths, headphone housings, keyboard pads.  

Daily Consumer Goods: Toothbrush handles, kitchenware grips, toys.  

Medical Supplies: Breathing masks, infusion tubes, medical gaskets.  

Why Choose CNMOULDING?  

Professional Team: With over 10 years of experience in TPE injection molding, our team provides expert advice on material selection and process optimization.  

High Cost-Effectiveness: By optimizing production processes and reducing defect rates, we assist customers in effectively controlling costs.  

Full-Service Solution: From design support and mold development to mass production delivery and after-sales tracking, we offer a seamless and worry-free experience.  

Global Supply Capability: Our products are exported to international markets, including Europe, the United States, Japan, and South Korea, adhering to global environmental protection and safety standards.  

CNMOULDING-Professional Medical Transparent Plastic Injection Molding Solutions

 CNMOULDING As a specialized manufacturer of medical-grade transparent plastic injection molding products, we leverage advanced production equipment, stringent quality control systems, and extensive industry expertise to deliver high-quality, safe, and reliable transparent plastic components for medical devices, pharmaceutical packaging, and laboratory consumables. Our products are widely used in syringes, infusion sets, reagent bottles, Petri dishes, transparent protective shields, and other medical applications, complying with international standards such as GMP and ISO 13485.

Core Products & Services

1. Medical-Grade Transparent Plastic Injection Molded Products

We use premium medical-grade PP (polypropylene), PC (polycarbonate), PETG (glycol-modified PET), and PMMA (acrylic) to produce high-clarity, chemically stable, low-leachate plastic components, ensuring safety and biocompatibility when in contact with pharmaceuticals and bodily fluids.

Key Products Include:

Medical Device Components: Syringe barrels, infusion three-way valves, nebulizer housings, etc.

Lab Consumables: Centrifuge tubes, PCR plates, specimen containers, etc.

Protective Equipment: Face shields, goggles, transparent isolation barriers, etc.

Packaging Solutions: Medicine bottles, blister packs, sealing caps, etc.

2. Custom Development Capabilities

Precision Molding: Microgram-level precision parts with tolerances as tight as ±0.01mm.

Cleanroom Production: Sterile manufacturing in Class 10,000 cleanrooms for critical applications.

Surface Treatments: Anti-fog, anti-static, UV-cured coatings, and other specialized finishes.

3. Rigorous Quality Assurance

Traceable raw materials compliant with USP Class VI, FDA 21 CFR, and other certifications.

Full-process testing: Light transmittance, chemical resistance, biocompatibility validation, etc.

Sterilization validation support (EO, gamma irradiation, etc.).

Industry Advantages

Medical Specialization: 30+ years of experience in medical injection molding.

Rapid Response: One-stop service from mold design to mass production.

Regulatory Compliance: Assistance with product registration and documentation.

Contact Us

For OEM/ODM services in medical transparent plastic products, we offer cost-effective, high-reliability solutions.

Professional Plastic Injection Molds & Manufacturing – Specialized in Refrigerator Drawer Production

 We are a specialized factory focused on plastic injection mold manufacturing and injection molding production, dedicated to providing high-precision, high-quality plastic components for the home appliance industry. With years of industry experience and advanced production technology, we have become a reliable partner in the field of refrigerator parts manufacturing, particularly excelling in the R&D and production of refrigerator drawers. We offer comprehensive solutions from mold design to mass production.

Core Advantages

Precision Mold Manufacturing

A professional mold design team utilizing CAD/CAM/CAE technology to optimize structure, ensuring mold accuracy and longevity.

Fully equipped with advanced machinery (CNC, EDM, wire-cutting, etc.), capable of producing complex injection molds tailored to various refrigerator drawer requirements.

Efficient Injection Molding

Equipped with fully automatic injection molding machines (80T-1000T), supporting materials such as PP, ABS, PS, PC, and more, meeting food-grade, low-temperature resistance, and high-toughness demands.

Strict process control ensures dimensional stability and surface finish, preventing defects like warping and shrinkage.

Specialized Refrigerator Drawer Expertise

Extensive experience in producing slide-out drawers, transparent drawers, and multi-layer storage drawers, with ergonomic designs (anti-slip textures, snap-fit structures, silent opening/closing).

Rigorous testing for low-temperature resistance (-30°C), load-bearing capacity, and drop impact, complying with home appliance safety standards.

One-Stop Service

Customization support: Material selection, structural optimization, color matching, logo engraving, and more to meet diverse needs.

Full-process quality control from mold development to mass production, accelerating time-to-market.

Quality Assurance

Strict adherence to ISO 9001 quality management system, with full inspection of mold precision, part dimensions, and functionality.

Equipped with CMM, tensile testers, and other equipment to ensure batch consistency.

Industries We Serve

We work with domestic and international refrigerator manufacturers and home appliance parts suppliers, with products widely used in household and commercial refrigeration. We also undertake orders for precision plastic parts in automotive components, daily necessities, and more.

The Role and Working Principle of Lifters in Molds

 1. Definition of a Lifter

A lifter is a common ejection mechanism in injection molds, primarily used to address demolding challenges caused by undercuts in plastic parts. It operates through an angled movement (typically driven by an angle pin or guide rail) during mold opening, allowing the part to be released smoothly without sticking or damage.  

2. Functions of Lifters 

(1) Resolving Undercut Demolding Issues  

-When a plastic part has internal recesses, side holes, or snap-fit features, standard ejector pins cannot release it directly. Lifters provide lateral movement to clear the undercut, enabling successful ejection.  

(2) Simplifying Mold Structure and Reducing Costs  

Compared to sliders or hydraulic core pulls, lifters have a simpler design, making them cost-effective for small to moderately complex undercuts.  

(3) Improving Production Efficiency  

Lifter movement is automatically controlled by mold opening/closing, eliminating the need for external power sources (e.g., hydraulics or pneumatics), making them ideal for high-speed injection molding.  

(4) Enhancing Product Aesthetics

- Lifters are usually placed on non-cosmetic surfaces (e.g., inner sides or bottoms) to avoid visible parting lines or ejection marks.  

3. Working Principle of Lifters

Lifter movement relies on mold opening, following this typical process:  

1. Mold Closing  

   - The lifter remains stationary during injection to ensure proper part formation.  

2. Mold Opening  

   - As the mold opens, the lifter is pushed by the ejector plate while being guided by an angle pin or rail, forcing it to move at an angle.  

3. Ejection Completion  

   - The lifter slides at a predetermined angle (usually 5°–25°) to clear the undercut, followed by full part ejection via ejector pins.  

Schematic: 

Mold closed → Mold opens → Lifter moves along angle pin → Clears undercut → Part ejected  

4. Common Types of Lifters  

(1) Standard Lifter  

- Driven by an angle pin, suitable for simple undercuts.  

(2) Delayed Lifter 

- Remains stationary initially, then moves at an angle later, ideal for complex undercuts or multi-stage ejection.  

(3) Hydraulic Lifter

- Powered by a hydraulic cylinder, used for long strokes or high-precision applications (less common, often replaced by sliders).  

(4) Two-Stage Lifter  

- Uses dual motion (lateral shift followed by ejection) for deep cavities or special geometries.  

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5. Key Design Considerations for Lifters

(1) Angle Selection 

- The lifter angle (typically 5°–25°) must balance ease of ejection with wear resistance. Too shallow an angle may cause sticking; too steep may lead to jamming.  

(2) Material and Heat Treatment  

- Lifters are often made of hardened steel (e.g., SKD61, H13) and heat-treated (HRC 48–52) for durability.  

(3) Lubrication and Guidance  

- Wear plates or oil grooves reduce friction and extend lifter lifespan.  

(4) Stroke Calculation  

- The ejection stroke must exceed the undercut depth to ensure complete release.  

6. Conclusion  

Lifters are essential in mold design, particularly for plastic parts with undercuts. Their simplicity, cost efficiency, and reliability make them widely used in electronics, appliances, automotive components, and more. Proper design of angles, materials, and motion ensures longer mold life and higher product quality.  

Precision injection molding characteristics

 

Precision injection molding characteristics

     The Precision injection molding is generally referred to as the precision of forming parts and surface quality is demanding high technology, some people think that precision injection is the size of plastic parts to achieve the accuracy of 0.01 ~ 0.001 mm injection molding process. In recent years, with the electronic, medical, communications, automotive, and other industries. With the rapid development of people’s plastic products, high precision, high-performance requirements. The traditional plastic molding process has been difficult to meet the current high standards. Is one of the most important plastics molding methods. Therefore, precision injection molding technology more and more people’s attention. Making precision injection molding technology continues to progress, new technology continues to emerge. Factors that affect precision injection molding require high dimensional accuracy, low warpage, excellent transfer characteristics, and excellent optical properties.

Therefore, it is on the injection molding machine, injection mold, molding process, raw material properties. And formulations have special requirements, affecting the many factors of precision injection molding. According to the current actual production point of view, the impact of precision injection molding factors are the following aspects:

1. Plastic shrinkage design of precision plastic products, plastic shrinkage should be considered.
2. The shape and size of the product The shape and size of the plastic parts have a great impact on the accuracy of the parts, the production practice shows that the more complex the shape of the product and the larger the size, the lower the accuracy
3. Mold structure The accuracy of plastic parts and mold cavity number and production volume are closely related. It is also shown that the accuracy of the single-cavity mold structure is higher than that of the multi-cavity mold, and the accuracy of small-mass production is higher than that of large quantities.

CNMOULDING: Professional Insert Molding Manufacturer – High-Precision, High-Strength Insert Molding Solutions

 CNMOULDING is a high-tech enterprise specializing in the design, manufacturing, and production of insert molding (Insert Molding) molds. We are committed to providing global customers with high-precision, high-stability insert molding solutions for applications in automotive, electronics, medical, home appliances, and industrial components.

With advanced machining equipment, extensive industry experience, and a strict quality control system, CNMOULDING has become a long-term partner for many renowned companies worldwide, offering one-stop services from mold development to mass production.

Key Advantages of Insert Molding

Insert molding is an efficient process where metal or non-metal inserts (such as nuts, screws, terminals, or sensors) are pre-placed into the mold and then encapsulated with plastic. Compared to traditional assembly methods, CNMOULDING’s insert molding technology offers the following benefits:

1. High-Strength Bonding: The plastic encapsulates the insert with high strength, ensuring superior pull-out force and torque resistance, thereby preventing any loosening or detachment.  

2. Cost Efficiency: By eliminating post-molding assembly processes, this method reduces labor costs and minimizes assembly errors, thus significantly enhancing production efficiency.  

3. High-Precision Molding: Precision-engineered molds guarantee accurate positioning of the insert and uniform encapsulation of the plastic, meeting stringent engineering requirements.  

4. Wide Insert Compatibility: This technology supports a variety of materials for inserts, including metals (such as copper, aluminum, and stainless steel) and non-metallic options, addressing diverse industry needs.  

5. Material Versatility: It is compatible with both thermoplastics (e.g., ABS, PC, PA, POM) and thermosetting plastics (e.g., phenolic resins), fulfilling various performance requirements across applications.  

CNMOULDING’s Core Competencies

1. Advanced Mold Design and Manufacturing  

CAD/CAM/CAE simulation is utilized to optimize the mold structure, ensuring stability and enhancing the accuracy of insert positioning.  

High-precision CNC machining, EDM (Electrical Discharge Machining), and mirror polishing are employed to guarantee mold durability and superior product surface quality.  

2. Mature Insert Molding Process  

Automated systems for insert placement improve production efficiency and maintain consistency in manufacturing processes.  

Rigorous process control over parameters such as temperature, pressure, and injection speed effectively prevents issues like insert misalignment and insufficient plastic filling.  

3. Rigorous Quality Inspection  

Advanced inspection methods, including 3D scanning, pull-out tests, torque tests, and others, ensure that the bonding strength of inserts complies with industry standards (ISO 9001, IATF 16949).  

4. Wide Industry Applications  

Automotive: Sensor housings, connectors, gear assemblies  

Electronics: PCB inserts, switch components, heat dissipation modules  

Medical Devices: Surgical instrument handles, disposable medical inserts  

Home Appliances: Buttons, fasteners, structural parts  

Why Choose CNMOULDING?

🔹 30+ Years of Experience – Successfully served 500+ global customers in insert molding.

🔹 Rapid Response – Efficient project support from mold design to mass production.

🔹 Cost Optimization – Process improvements reduce scrap rates and save costs.

🔹 Custom Solutions – Tailored services including multi-cavity molds, hot runner systems, and automated insert placement.

Contact Us

If you are looking for a reliable insert molding supplier, CNMOULDING is your ideal partner! Contact us for customized solutions, professional technical support, and high-quality service.

Phone: +86-021-52913487

Email: webmaster@cnmoulding.com

Website: www.cnmoulding.com

CNMOULDING – Your Expert in Precision Insert Molding, Enhancing Product Competitiveness!