PPSU Parts Mold Making Company

 

PPSU Parts Mold Making Company

 

PPSU Part  Mold Making Company： As we know, PPSU is a high-performance plastic material. They are used more and more in the medical and food field. First of all, let us learn the character of the PPSU:

High Heat, High Impact Performance

The high heat resistance and excellent hydrolytic stability of PPSU make it an excellent choice for hot water fittings, and medical devices requiring repeated steam sterilization.
PPSU products are specially formulated for use in aircraft interiors. And are in compliance with stringent FAA regulations requiring low heat release. China injection mold has low smoke generation and low toxic gas emissions.PPSU offers cost advantages for applications with less demanding requirements.

PPSU Parts Mold Makin Key Features

• High HDT of 207°C (405°F)
• Superior toughness and impact strength
• Exceptional long-term hydrolytic stability
• Better chemical resistance than PPSU and PEI
• Withstands over 1,000 cycles of steam sterilization without any significant loss of properties
• Inherently flame retardant
• Transparent
• Colorable

Now they are used in the fields as follows:

PPSU (Polyphenylsulfone) is a high-performance engineering thermoplastic material that is known for its excellent mechanical properties, heat resistance, and chemical resistance. PPSU parts can be used in a wide range of applications in the medical, aerospace, automotive, and electrical industries. Some common PPSU parts include:

1. Medical instruments – PPSU is often used to manufacture medical instruments such as dental tools, surgical instruments, and blood filtration devices due to its biocompatibility and sterilization capabilities.
2. Aerospace components – PPSU is lightweight, strong, and resistant to high temperatures and chemicals, making it an ideal material for aerospace components such as aircraft interiors, electrical connectors, and engine parts.
3. Automotive components – PPSU is used in automotive applications such as fuel system components, electrical connectors, and engine parts due to its resistance to heat, chemicals, and high-pressure fluids.
4. Electrical components – PPSU is an excellent electrical insulator, making it an ideal material for electrical components such as circuit breakers, switches, and electrical housings.
5. Food and beverage industry components – PPSU is FDA-compliant and can be used in food and beverage industry applications such as water filtration systems, food processing equipment, and beverage dispensers.

 

After we study the PPSU character, we should know how to choose the steel for the mold. Since the mold temperature is about 300 °C-400°C during production. The first is important to make good cooling systems for mold making. If the mold temperature is always high because of the poor cooling system. The mold life will be affected, injection mold companies the second the flowability of PPSU is not good as ABS, PA. We always avoid point gates and make the game as big as possible. Third, produce this kind of mold. We should equip a special screw and nozzle in the injection machine, the high temperature will hurt the normal machine.

 

PET material parts

 

PET -plastic injection molding material

 

Polyethylene Terephthalate (PET) has gained widespread popularity across various industries due to its exceptional properties and versatility. PET is extensively used in the production of packaging materials, automotive components, electronic devices, and numerous other applications, making it a cornerstone of modern manufacturing.

Key Advantages of PET Material

1. Exceptional Mechanical Strength
PET is renowned for its high tensile and impact strength, making it ideal for applications that demand durability and resistance to external forces. This ensures that PET parts can endure harsh environments while maintaining their structural integrity over time.

2. Superior Chemical Resistance
PET exhibits excellent resistance to a wide range of chemicals, including acids, alkalis, and solvents. This property makes it a preferred material for industries such as automotive manufacturing and chemical processing, where exposure to aggressive substances is common.

3. Outstanding Dimensional Stability
PET parts have low moisture absorption, ensuring their dimensions remain stable even under fluctuating humidity levels. This characteristic is critical for applications requiring precise measurements and tight tolerances.

4. High Transparency
PET is highly transparent, offering excellent light transmission. This makes it a popular choice for food and beverage packaging, where product visibility is essential. Additionally, its transparency facilitates easy inspection and quality control during manufacturing.

5. Recyclability and Sustainability
PET is fully recyclable, contributing to a more sustainable and eco-friendly manufacturing process. Its ability to be reused has made it a favored material in industries prioritizing environmental responsibility and waste reduction.

6. Versatile Processing Methods
PET can be processed using various techniques, including injection molding, blow molding, and thermoforming. This versatility allows manufacturers to produce PET parts in a wide range of shapes and sizes, catering to diverse application needs.

Applications of PET Material

- Packaging: PET is widely used for bottles, containers, and films due to its transparency, strength, and recyclability.
- Automotive: ET components are used in interior and exterior parts, benefiting from their durability and chemical resistance.
- Electronics: PET is employed in insulating films, connectors, and other components requiring dimensional stability and electrical properties.
- Consumer Goods: PET’s versatility makes it suitable for products like household items, textiles, and more.

Conclusion

PET material stands out as a superior choice for manufacturing high-quality parts across industries. Its combination of mechanical strength, chemical resistance, dimensional stability, transparency, recyclability, and processability makes it an indispensable material. As industries continue to evolve and seek innovative solutions, PET is poised to remain a key player in meeting these demands, driving both performance and sustainability.

 

 

China Injection Mould Making Companies Development Inevitable Trends

 At present, the injection mould in the mould industry accounted for about 30% of the import and export proportion up to 50 to 70%. In recent years, China’s rapid development of injection mould. With the growing use of plastic products for plastic moulds to provide a very broad market. So that the overall trend of the mold market steady upward.

It is expected that in the future mould market. The development of plastic moulds will be higher than other kinds molds in the mould industry will gradually increase the proportion.

Another way to understand the meaning of the article is that the benefits injection molding will instead of other processing methods .

And which plastic mould processing technology generally presents the following trends:

1, Precision mould making manufacturer is an inevitable trend

The mould precision will be higher and higher. 10 years ago, the precision molds are generally 5 microns, has now reached 2-3 microns, 1 micron precision injection moulds will also be listed. At the same time, so-called precision mould making is the mould development process and manufacturing results in terms of concrete manifestations. Stamping process and mould structure design rationalization, high precision molds, mould products, high reliability. And technical management Tightness. Precision mould manufacturing is not a single technology. But also the designing, processing, and management of a comprehensive reflection of technology. To realize precision mould manufacturing, in addition, to rely on technical excellence, it will also be strict management to ensure.

2, Scientific management and information technology is the injection mould enterprise development direction

Another important aspect of injection mould technology development is scientific management and information technology. China injection mould making companies use scientific management continue to just-in-time manufacturing and lean production direction, enterprise management more accurate. A substantial increase in productivity, ineffective institutions, links, and personnel streamlined.

3, Mould (Mold) is becoming larger and larger

Injection mould forming parts size and high productivity parts are increasing, requiring a multi-cavity, resulting in increasing the mold size, large mould tonnage up to 100 tons. A few hundreds of cavities, several thousand cavities, require mold processing equipment Table. Increase the y-axis z-axis travel, large load-bearing, high strength, high consistency. The fine processing of the mold makes the processing equipment more complex and more interesting. High-speed milling with the processing of high hardness materials, processing a smooth, cutting force is small. The workpiece temperature, deformation, and many other mold enterprise’s advantages to paying more attention to high-speed processing.

4, Multi-functional composite mold will be further developed.

Mould processing die steel material hardness is high, requires mould processing equipment with thermal stability, high reliability. For the complex cavity and multi-functional composite mould, with the workpiece complexity shape, we must improve the mold design and manufacturing level, a variety of trenches, a variety of materials in a set of moulds or assembled into multi-functional composite components Mould, requires a large number of processing program, with a high hole integrated cutting capacity and high stability, improve the processing difficulty.

5. High dynamic accuracy.

Mould machine has a static performance in the mould three-dimensional surface processing, can not reflect the actual processing situation. The high precision machining of the three-dimensional surface of the mould is proposed. The high precision is also realized in the high rigidity, thermal stability, high reliability, and high quality machine control system

Now you can make the decision to start your new project, But if you a newer and to buy mould and plastic injection molding from China company

No problem, next step you have to learn how you choose an injection molding supplier, refer to our article for “select your plastic injection molding supplier with 6 reasons“!

What is Injection Molding process defects?

 Injection molding is a complex manufacturing process that can produce high-quality plastic parts. However, there are several defects that can occur during the injection molding process. Here are some common injection molding process defects:

 

Warping:

This occurs when the plastic part cools and contracts unevenly, causing it to warp or twist. Warping can be caused by uneven cooling, improper mold design, or incorrect material selection.

Sink marks:

These are depressions or indentations that appear on the surface of a plastic part. Sink marks are caused by uneven cooling, thick areas of the part, or insufficient packing pressure.

Flash:

Flash is excess plastic material that protrudes from the parting line of the mold. It is caused by excessive injection pressure, poor mold alignment, or worn or damaged molds.

Short shots:

Short shots occur when the plastic material does not completely fill the mold cavity, leaving the part incomplete or with missing sections. Short shots can be caused by insufficient injection pressure, improper material selection, or inadequate venting.

Burn marks:

The burn marks are dark or discolored areas on the surface of the part caused by overheating of the plastic material. Burn marks can be caused by excessive injection speed or pressure, inadequate cooling, or poor venting.

Voids:

Voids are empty spaces or air pockets within the plastic part. Voids can be caused by inadequate injection pressure, poor mold design, or insufficient cooling.

Overall, injection molding process defects can be caused by a variety of factors and can be challenging to prevent. Careful attention to mold design, material selection, and process parameters can help to minimize these defects and produce high-quality plastic parts.

injection mold slider design

 

Complex-injection-mold-sliders.

Injection Mold Slider Design: Key Principles & Best Practices

Sliders (also called side-action cores or cam mechanisms) are essential mold components used to form undercuts or complex geometries that cannot be released by standard ejection systems. Here’s a comprehensive guide to slider design for injection molds:

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1. When to Use Sliders?

Sliders are needed when:

• The part has external undercuts (e.g., side holes, hooks, threads).
• The part has internal undercuts (e.g., snap fits, internal grooves).
• Straight ejection would damage the part.

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2. Slider Types & Mechanisms

Type	Description	Application
Angled Pin Slider	Driven by a tapered pin during mold opening.	Simple side undercuts, low-cost.
Hydraulic Slider	Uses a hydraulic cylinder for controlled movement.	Complex undercuts, high precision.
Rack & Pinion	Gear-driven for smooth linear motion.	Long travel distances.
Lifter-Assisted	Combines a lifter + slider for deep undercuts.	Internal undercuts.

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3. Critical Design Parameters

(1) Slider Movement Calculation

• Travel Distance = Undercut Depth + (1~2mm safety margin).
• Angle Pin Angle (typically 15°–25°):
• Larger angle = Faster movement but higher friction.
• Smaller angle = Smoother but slower action.

(2) Guiding & Locking

• Wear Plates (hardened steel) reduce friction.
• Locking Blocks prevent slider deflection during injection.

(3) Cooling Considerations

• Avoid cooling lines near sliding surfaces to prevent warping.
• Use baffles/bubblers if cooling is necessary.

(4) Draft Angles

• Add 1°–3° draft on slider contact surfaces to ease release.

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4. Step-by-Step Slider Design Process

1. Identify Undercut Location

• Check part CAD for undercuts requiring side action.

1. Choose Slider Type

• Angled pin for simple designs; hydraulic for complex motions.

1. Calculate Travel & Angle

• Ensure full undercut clearance without interference.

1. Design Slider & Core

• Use split cores if undercut is deep.

1. Add Locking & Ejection

• Locking blocks + return pins for stability.

1. Simulate Motion

• Check for collisions in mold-opening sequence.

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5. Common Slider Defects & Solutions

Issue	Cause	Solution
Slider Sticking	Poor lubrication/wear.	Use self-lubricating materials (e.g., bronze guides).
Part Damage	Insufficient travel/draft.	Increase slider stroke or draft angle.
Flash Formation	Worn locking surfaces.	Replace hardened lock blocks.

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6. Advanced Tips

• Micro-Sliders: For tiny undercuts (<2mm), use spring-loaded mini-sliders.
• Collapsible Cores: For threaded parts, use retractable cores.
• 3D-Printed Sliders: For prototypes, use metal 3D printing for complex geometries.

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Conclusion

A well-designed slider ensures smooth demolding of complex parts while maintaining mold longevity. Prioritize:
✔ Precise travel calculation
✔ Robust locking/guiding
✔ Proper cooling & lubrication

For high-volume production, hydraulic sliders offer better control, while angled pin sliders are cost-effective for simpler molds.

Would you like a specific case study (e.g., automotive part slider design)?

injection mold slider

injection mold slider design

In conclusion, the design of an injection mold slider is a critical factor in the success of any injection molding process. By carefully considering factors such as material choice, shape, mechanism, placement, and maintenance, it is possible to design a slider that functions correctly and produces high-quality parts. With careful planning and attention to detail, it is possible to create injection molds that deliver excellent results time and time again.

As a professional china injection mold company, we focus on precision mold making manufacturing
in china for the complicated slider.

Select your plastic injection molding supplier have 6 reasons

 

There are six reasons as the factors need to be examined

• Quality improvement

• Market timing
• Optimal cost control
• Continuously improve and upgrade technology
• The most extensive industry supporting capacity
• Focus on the plastic mold and injection products industry

It can be proved from the efficiency, quality, and cost points, Customer's manufacturing of
injection molding parts is a challenge, after 20 years of development, we have obtained
customers who supply the production of injection mold on the best, but the fact that low
efficiency still problem in the process still exists.

We firmly believe that high-quality plastic parts manufacturing at a competitive cost are an eternal challenge. The whole process of efficiency improvement is shown to be more complex, involving issues beyond the most CEO imagination. Managers have often decided to save money to make molded parts, but soon found that "cheap"
plastic parts require considerable infrastructure investment to achieve the ultimate goal. They are committed to their commitment to investing in sophisticated equipment and training experienced employees. In the face of reality, one of the core competitiveness for each company is the biggest factor in mold production or outsourcing. There is no doubt that each manufacturer's mold making, and injection molding of product components will eventually make the product quality, but the price point of view of the market share proved to be a challenge.

Today, our technology has been a model for a successful injection molding parts supplier,
including packaging, medical, automotive, electronics, and other industries. Regardless of your industry and injection products, mold manufacturing in the factory set the parameters and the implementation of the rules unchanged. The evaluation success is a key factor in your honesty and Factual Evaluation
To determine the injection molding products in the factory and outsourcing, you must prove that the cost-benefit of the harvest is in the customer's best interests.

[caption id="attachment_258" align="aligncenter" width="300"] Select your plastic injection molding supplier have 6 reasons[/caption]

Related to the final evaluation,

We guarantee we will try to beat any quote you have got. Plus

1.       Fast delivery;

2.       Fast responses to inquiries;

3.       Excellent customer service;

4.       Free door-to-door delivery to some countries;

5.       Factory new, refurbished, and obsolete products;

6.       UP to 18 months warranty

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.  

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.  

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.  

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.

Plastic mold manufacturer

 

Plastic mold manufacturer

When you develop a new plastic model, you need to find plastic moulding china to make the mold.
Since the company size, location and history are different. They will quote you different prices.at the moment lots of trading companies pretend to be a plastic mold manufacturer to dealing with you. They will take at least a 30% profit from you and do nothing. Just think about it. If your competitor finds a true plastic mold manufacturer but you find the trading company to develop the same project. They will have a 30% price advantage compared to you. Do you think if you have any chance to win the market?

 

How to find a reliable plastic mold manufacturer?

I think it’s better to spend some time to get to know one or China injection molding several plastic mold manufacturer really well. Visiting them is the best idea once you get a good feeling about it (after discussions about mold engineering or making a small test mold). When you have a good relationship with a plastic mold manufacturer. And you will know how they think about the technologies and use the same language to discuss mold engineering, more effective. You can move on to your project very fast. That’s where the profit is along with the life of the project. Steel is steel and CNC machines are the same for every shop. In the end, it counts on the people who work with you and if someone does a value stream analysis of a project, the mold quality will be different.

 

Visit the plastic mold plant

 

Visit the plastic mold plant and check the facility available with them. Injection molding company asks about his existing customers and main marketing. Check the molds which are in construction in the shop, see the project management system. Look at the sample components they made in the past. All this will give you an idea of the capability and the quality levels of plastic mold manufacturer.
Then check which is your most concern like, lead time of mold building, the finish of the samples, dimensional criticality, quality of steel. After-sales service like modification of mold based on the change in design change during the mold life, the durability of the product.

 

Know injection mold cost

The cost of mould includes： material fee + design fee + processing fee and profit + VAT + trial fee + packaging transportation fee. According to material cost calculation, mold price =(6~10)* material cost.

Visible, the cost of the mold is mainly in the technology and processing costs above, the material ratio is smaller. The more complex the structure of the mold, the greater the difficulty of production, the higher the cost of course. In addition, the higher the precision of the mold requirements, the greater the difficulty of processing, the greater the effort spent. Of course, the cost of mold production will go.

The most important is: find many plastic mold manufacturers for price and quality checks. Choose the best and proper one as your business partner.

Medical supplies

How is CNMOULDING Supporting Medical Device Manufacturing?

CNMOULDING is currently supporting the medical industry through rapid prototyping, mold creation, and engineering design. The medical industry is quickly advancing technology and products that are being developed specifically with plastic injection molding in mind. CNMOULDING has a rigorous quality initiative for day-to-day operations, which was recognized during our ISO 9001: 2015 certification. Our management system keeps our molded products at the highest quality before distribution to a finished device manufacturer or an end consumer.

Why Does CNMOULDING Recommend Plastics for the Medical Industry?

Reduced Manufacturing Side Effects – Plastic injection molding produces few side effects and has very little scrap material after the injection molding process.

Reduced Tooling Investment – Metal casting and stamping dies can take 12-16 weeks to complete after the initial design is complete. Plastic injection molding dies can be ready to make products in as little time as 6 weeks. Plastic injection molds can last up to six times as long as casting and stamping die.

Unlimited Design Options – Complex metal product designs often require a significant amount of development time and cost to ensure casting or stamping molds will survive a long life cycle. Plastic injection molding can fill molds faster with better results, and plastic products have also seen a rise from 3D printing as new equipment, software, and materials are in constant evolution.

Corrosion Resistance – Plastic is naturally corrosion-resistant by nature, whereas most metals need a secondary or tertiary operation to apply a coating to resist corrosion.

Reduced Product Weight – Engineered plastics can reduce the overall weight of most products. Reducing weight can positively reduce shipping costs and make ergonomic improvements within a manufacturing process.

Biocompatibility – Medical grade plastics are biocompatible which makes them easier to incorporate into new ideas and redesigns of older products.

Recyclable – Medical grade plastics can be recycled without concern of extra protective coatings contaminating new materials.

Mold making project for thermoplastic elastomer molded parts 

Recently, we produced three molds for Austrian companies, injection molding products are
thermoplastic elastomers. We call TPE. The customer is a medical company, and the product requirements more stringent. We encountered some problems in the production process, but in the end, they are the perfect solution. 

1， Products design

2, Mold design

3. Mold making

mold make

4, Mold making for medical-mold teat

mold teat

5， Work with customers to improve the design

6， The product is covered with a layer of rubber

7， Laser and Silk printing

8， The final product

Troubleshooting for PC plastic molded parts

 

Focus on Polycarbonate Project success

We are very honored, for a Polycarbonate molded parts project between China and US injection mold company. We become the winner.

There is an American medical company needs 1 set of high precision injection molding part, the part we are going to mold is made in PC raw resin, also called Polycarbonate. Although the transparent plastics piece is our strength, in the actual production process, some problems. Our experts cost time and solve it finally, it should be we can learn and share.

Here’s a simple idea about the injection mold for PC medical products.

 

 

Deep Injection Molding Manufacturing Expertise

As you can see the transparent body is a hook surface.  The product surface needs to be transparent and no rod traces and dirty marks. We need to ensure that the plastic products will not stick in the side of the cavity during the injection molding process. So it is necessary to use a slider block structure. Because the customer needs all the wall thickness must be uniform, then the light reflection is the same. Look at the pictures and videos can know, for an elliptic shape, the problem is difficult to solve.

 

Another problem is the bubble inside, the product safety reason, customer have to design and make the wall thickness reaches 5 MM, PC accessories will have some bubbles, from the picture you are hard to find, but the actual existence, made a bubble in the PC material parts get cooling and sealing the door quickly,  there are some defects on the surface is easy to produce because of big thickness, to do the right thing, there are a few things you might want to check if the resin completely drying, a suitable mold temperature, injection speed, using multi-point hot runner feeding, etc. here is the final approved sample to see the clean off, there is no bubble at all!

 

“INCREASE YOUR COMPANY PROFIT WITHOUT SACRIFICING QUALITY “

Trusty Tooling & Mold Making, China Supplier– CNMOULDING.COM

Mold making in China is generally much more affordable than in the West .Cnmoulding.com will devise the appropriate tool and mold-making strategy for you.

China plastic injection molding and injection moulds will save your company 50% to 70% of the cost of U.S. Manufactured molds and we will produce them in half the time it takes to produce the same mold in the U.S.

Manufacture your injection molded products and injection molding with us in China. Send us your 3D solid model CAD drawings or sample or even only your idea. And we will provide you with the absolute lowest price for injection molds as well as your injection molded products with quality standards meeting or exceeding your expectations.

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.