CNMOULDING-injection mold company

 CNMOULDING-injection mold company offers a plastic injection molding service and specializes in various plastic molds. automotive, home appliances, electronics, as well as general industrial OEM applications. Our company covers an area of more than 2000 square meters workshop, surrounded by convenient transportation. At present, our group reaches more than 100 employees and capital assets to more than 8 million RMB. Our capacity is 40-50 sets of mold per month.

CNMOULDING-injection mold company's mission is to be a professional, trustworthy, and creative toolmaker and injection molding supplier. We always keep the Layout at the top level and introduce a modernized management system. Go in for zero default. Make sure quality and techniques are in the highest way. Therefore, we dedicate ourselves to making innovation and progress and continue to be your better partner. Enhance our technology and accumulate experience in mold building, injection molding, print, paint, etc.

1, We provide direct factory prices and make costs transparent.

As you know there are more than 5000 trading companies in China, but some of them concealed their property very well. It is hard to tell a foreigner. normally they will make a profit of 30%.so we show the detailed cost on our website, Most traders can’t quote the price at this level. But these prices are a normal price for us and have a proper profit.

2, We focus on providing a one-stop service for small and medium-sized companies.

We are a middle size mold making and injection molding company. It is also one reason for the good price. We don’t need to pay the huge administration fee compared to the big factory. We got an ISO9001-2008 certificate, which ensures our quality same as the big factory. As everyone knows china mold is much cheaper than in the USA or Europe but injection molding will be more expensive because the resin price in China is 50% higher or double. But if you only produce 1,000-50,000 pcs. then China will have a big advantage. Moreover, we can make print, paint, and assembly in the house.it also saves a lot!

3, Our Sales Manager has rich experience in engineering.

Most of the companies will arrange sales girls to contact customers, they are lack mold knowledge, just transfer e-mail and said some holiday words but will get good commission(3-5% total price. Of course, the cost will be calculated in their quotation). our Sales Manager will handle the job for both the sales manager and project manager. It will make sure our professional service gets through the whole process and the communication is more efficient.

Mold design:

The high-quality mold is the core business of CNMOULDING. We have 10 special mold designers, who have rich experience in resin Character and mold structure. and take each case seriously,  before designing the start, our designer will run Mold Flow Analysis and attend a technical meeting for each mold with a tool shop and injection shop. to avoid potential manufacturing problems and troubleshoot. all of this is a strong guarantee of our high quality and short lead time, our Services include: Product Design, Appearance Design, Structure Design, Mold Design (2D & 3D), DFM (Design for Manufacturability), Mold Flow Analysis

CNMOULDING-injection mold company project Management:

Project management is the key to the success and quality of the products, All our Project Engineer not only has rich knowledge in tooling and injection molding but also speak good English. The project engineers will be responsible to follow up on the tooling process and timely reporting to the customer on any issues and progress of the project he is handling.

All we do want is to provide:

1, On-Time Delivery

2, Assuring customer’s project is produced to customer’s standards and requests

3, Anything communicated in a timely and clear way

4, Complete project management and support from concept to final part inspection and approval.

The Mold Standard:

Mold Steel: ASSAB(Sweden), DAIDO(Japan),FINKL(America),AUBERT & DUVAL(France), Thyssen(Germany), LKM (China)

Mold Base: EMP, DME, HASCO, FUTABA, LKM.

Hot Runner: MOULD MASTER, SYNVENTIVE, HASCO, DME, YUDO, INCOE

Standard Parts: DME, HASCO, LKM, HEB, STRACK, OPITZ

Texture: VDI 3400, Mold-tech, Yick Sang, Tanazawa, etc

Software:Pro/Engineer,Solidworks,AutoCAD,Moldflow, Unigraphics, CATIA, MasterCAM

Mold making in-house :

Our Mold shop is well equipped with advanced machines, such as High-speed CNC machines, Slow wire cut machines, and Mirror EDM machines, they are all imported from Taiwan, Switzerland, or Japan. they will make sure the mold is manufactured with high precision and a good finish. moreover, all processes in the house will ensure the short lead time of mold making, our shop has 30 skilled toolmakers, most of them have more than 10 years of experience in mold making, they are familiar with all machining processes, cost of each step and potential troubleshot for mold. I think they are the biggest treasure of our company, their experience, and hard work will be guarantee high-quality mold at a reasonable price.

The concept of plastic injection molding

Plastic Injection molding is used to produce many things such as wire spools, packages and bowls, bottle caps, automotive parts, toys, optics, some musical instruments (and parts of them), one-piece chairs and small tables, storage containers, mechanical parts (including gears), and most other plastic products available today. Injection molding is the most common modern method of manufacturing parts; it is ideal for producing high volumes of the same object.

Injection molding uses a ram or screw-type plunger to force molten plastic material into a mold cavity; this solidifies into a shape that has conformed to the contour of the mold.

Our injection shop:

CNMOULDING is one of the famous plastic injection molding companies in China. Our injection molding shop is equipped with 20 sets of high-precision injection molding machines ranging from 50ton to 650 tons, they are mostly imported from Taiwan or Japan. Our injection shop runs 24 hours a day, 7 days a week automatically production services.

We are experienced with various plastic products for automotive, medication, lighting, sports equipment, home appliance, and agriculture. credited an ISO9001-2008 certificate since 2004, also has 5 IPQC people watch the production and check the quality within 24 hours, it makes sure our production keeps a stable quality, in the past 15 years, our company already win a good reputation with stable quality and reasonable price. keep a good business relationship with 50 customers, especially from the USA and Europe

In order to produce save costs and time in the process of plastic injection molding and improve the production efficiency of the injection mold. Mold manufacturers increasing the use of new materials and new technologies. And these new materials and new technologies to a certain extent, represent plastic injection mold manufacturing as a new trend.

Precision Redefined: The Advantages of Our CNC Machining Center with ATC

 Our new CNC Machining Center, equipped with an Automatic Tool Changer (ATC), represents a significant leap forward in manufacturing capability. The true precision advantage of the ATC lies not just in speed, but in its ability to fundamentally enhance process stability and guarantee superior final part accuracy.

Here are the core benefits driving this new level of precision:

1. Eliminating Human Error for Unwavering Consistency

Traditional Manual Change	ATC Advantage (Automated)
Inconsistency: Manual handling introduces variability—uneven tightening force, potential contamination, or operator fatigue—all leading to tool runout and inaccuracy.	Repeatability: The ATC executes every change with identical, programmed motions. It consistently cleans the taper, grips, and locks the tool, ensuring perfect, repeatable positioning.
Impact: Random human errors are eliminated, guaranteeing superior tool-holding rigidity and minimal runout, which is critical for tight tolerances.

2. Enabling "Complete Machining in a Single Setup"

Manual processes force interruptions for tool changes, introducing potential cumulative errors from thermal drift or workpiece shifting.

The ATC overcomes this bottleneck by completing all required operations (milling, drilling, tapping) in one continuous, automated cycle without removing the part. This is critical because it:

• Maintains a Single Datum: The workpiece remains fixed to a single zero point, preventing the cumulative errors associated with re-fixturing.

• Guarantees Geometric Integrity: It reliably ensures high positional accuracy and tight geometric relationships between all features (holes, slots, surfaces) on the finished component.

3. Ensuring Flawless Batch Consistency and Process Stability

For batch production, the ATC ensures the entire machining process, including the tool changes, is perfectly repeatable from the first part to the thousandth. This unparalleled process stability removes human variables, guaranteeing high consistency in dimensions and tolerances across the entire production run.

4. Supporting Optimized and Adaptive Machining Strategies

The ATC makes advanced strategies practical:

• Dedicated Tooling: It allows for dedicated "roughing" and "finishing" tools. The finishing tool remains sharp and unaffected by the wear of the roughing process, directly resulting in a better surface finish and tighter tolerances.

• Adaptive Control: It enables the use of in-process probing and automatic tool compensation, facilitating continuous adaptive control for real-time accuracy adjustments.

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Summary: Our Precision Commitment

Key Advantage	Benefit to Your Project
High Repeatability	Consistent tool positioning and minimal runout.
Low Error Accumulation	"One setup" machining prevents error stacking.
High Process Stability	Human variables are removed from the production cycle.
Superior Process Capability	Enables optimal dedicated finishing strategies.

This new investment ensures we can provide our customers with more precise and reliable mold manufacturing services than ever before.

Precision Integration, Unlimited Innovation: Your Partner in Rotary Overmolding Solutions

 

Precision Integration, Unlimited Innovation: Your Partner in Rotary Overmolding Solutions

In today’s demanding market, where product excellence is non-negotiable, relying on single-material designs is often insufficient to meet stringent requirements for functionality, aesthetics, and tactile quality.

Are you facing the limitations of traditional processes?

• Efficiency Bottlenecks? Struggling with slow cycle times and weak interfacial adhesion inherent in secondary injection molding?

• Quality & Environmental Risks? Concerned about inconsistent bonding, poor reliability, and the environmental drawbacks of adhesive joining?

• Aesthetic Compromise? Detracted by visible assembly gaps that undermine a product's premium appeal and long-term durability?

The solution is not just a process—it’s a paradigm shift. What you need is an advanced manufacturing strategy supported by a specialized mold engineering partner.

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Why Choose Rotary Overmolding? A Leap Beyond Traditional Manufacturing

Rotary two-shot injection molding is the convergence of precision engineering and innovative design. By leveraging a fully integrated mold system with a high-precision rotational mechanism, this technology seamlessly co-molds two dissimilar materials (e.g., rigid and soft-touch polymers) into a single, unified component within one continuous cycle.¹

Key Advantages We Deliver:

• 🛡️ Superior Product Performance & Reliability: We ensure a robust, durable bond through molecular-level material compatibility and mechanical interlocking structures.² This significantly enhances structural integrity, longevity, and functional reliability between soft and hard components.

• ⚡ Enhanced Production Efficiency & Cost Control: Consolidating two molding stages into a single automated operation dramatically reduces cycle time, minimizes labor input, and lowers operational costs.³ This supports scalable, high-volume manufacturing, making it the ideal, cost-effective solution for mass production.

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Decades of Expertise. End-to-End Solutions.

With decades of dedicated experience in developing advanced rotary overmolding molds, we are not just fabricators—we are comprehensive solution providers spanning:

• Concept Design

• Prototyping

• Precision Tooling

• Full-Scale Production Support

Proven Implementation Across Critical Industries:

Industry	Applications
Consumer Electronics	Premium smartphone cases, TWS earbud cases, controllers, and smart wearable straps.
Automotive Components	High-comfort steering wheels, gear shift knobs, ergonomic control buttons, and advanced sealing profiles.
Power Tools & Appliances	Ergonomically optimized handles for power tools and heat-resistant grips for kitchen appliances.
Medical Devices	Anti-slip hearing aid housings, patient-comfortable respiratory masks, and precision surgical instrument grips.

Post-processing technology of injection products

 

Post-processing technology of injection products

For printing on the surface of the plastic products, printing or when the pattern. there are several methods.

1, Stencil printing of this method is the most common and also the most one method; they are generally suitable for flat or curvature of the small print.

2, The principle of curved surface printing flexography printing ink is first placed within the text or logo engraved gravure, then copy the text or images onto a surface. The surface will re-use the text or pattern is transferred to the surface of the molded product. And finally through an ultraviolet light irradiation heat treatment or the like so that the ink is cured.

 

injection parts processing-Surface printing process:

Skim A. molded products

1. molded product surface treatment (when necessary)
2. Printing
3. curing inks
4. applying post-processing such as excessive (if necessary)

injection parts processing-Printing Process

1. Gravure ink into the.
2. Scrape off the excess ink.
3. Extruded surfaces are made of ink.
4. The surface of the ink transferred to the surface of the molded article.
5. Cleaning surfaces, layout (if necessary), and printing will start with version patterns or patterns printed on the plastic sheet or rubber roller. The rubber roller will no longer sheet or pattern or pattern onto the surface of the beer.

Pros: Several colors can be applied in a single operation.

Disadvantages: lower productivity and not getting opacity strong prints. How to choose a suitable plastic sheet or rubber roller and oil, and so on.

1， The use of hot stamping foil and the color pattern engraved or font of the hot mold. Under controlled temperature and pressure. The surface of the emboss pattern of manufacturing color package or method of beer font member. Which is mounted on the operation only by fixing the press hot mold foil color on regional products across the pressure needed to be applied.

2, The paint surface treatment of plastic products (color) of the most commonly used techniques,

Can be divided into:

A general coloring, that this spray paints mostly by hand, do not have strong abrasion, easy to paint chips.

B, PU grade varnish this method is finished after the spray drying primer, then spray on the surface layer of the PU varnish method to achieve abrasion and gloss. General home appliances or many everyday items are through PU surface treatment.

C, UV grade varnish finish this method after spray primer and then sprayed with a layer of surface UV varnish, gloss, feel, rubbing can achieve very good results. General phone mold products and communications products die with such an approach.

 The use of the electrolytic plating method is electroplating the metal or alloy deposited on the surface, to form a uniform, dense and good adhesion of metal layers, called plating. Simple to understand, the physical and chemical changes, or in combination.

Purposes: a. Corrosion b. Protective decorative c. Anti-wear d. Electrical properties: According to parts work requirements, providing conductive or insulating coating performance e. Process requirements

The surface of the article by electrolytic uniform, dense, with good metal or alloy deposited layer forming process. The process is a relatively complicated process, but it has many advantages. Such as many types of deposited metal can be obtained in various colors, with Compare similar process being relatively cheaper than in terms of prices.

What is Custom Plastic Injection Molding

 Most Chinese injection mold manufacturers complete international trade by providing customized services, but lack of real understanding of the real meaning of customers’ need for customized services, resulting in some mold manufacturers can not accurately complete the highly specialized manufacturing after signing contracts.

Just because a mold maker can facilitate the development of the original mold does not constitute real customer service (or ensure an ideal result). These mold manufacturers lack the ability to export complex injection molded parts for experienced reasons to complete with standardized specifications and tight tolerances.

How to evaluate injection molds consistent with your project needs is a critical criterion for project success. For example, components used in medical or aviation, automotive applications need to be truly sophisticated in design, engineering, and equipment use, compared to common civilian products.

Experience has the rich injection mold division’s concentration and the actual field ability. plastic molded parts used in such applications must comply with strict inspection specifications and compliance assembly instructions.

CNmoulding Industries specializes in plastic injection molding in China to produce a wide variety of products from high-tech parts with very tight tolerances to consumer products, lawns, and gardens as well as entrepreneur’s inventions. We provide custom plastic injection molding for customers worldwide, in a variety of industries. We are the low-cost leader for high-quality injection molded plastics with a fast turnaround. Some examples of these products are pictured on our web.

We manufacture large and small moldings. we can manufacture almost any plastic part for any of your needs.

High volume custom injection molding capabilities

 Precision tool makers in our Factory allow us to provide quick-turn service on medium to high volume orders, where we build dedicated long-run production molds. We specialize in high-volume custom plastic injection molding projects. High-end second-op machining is also available. Our plastic injection factories in China manufacture very high-quality products that are extremely cost-effective. Custom injection molding in China is especially effective when the plastics require secondary operations for completion. These secondary operations include anything from cleaning parts, overmolding, painting, drilling holes, pad printing, screen printing, or partial sub-assemblies.

Before releasing it, we will make a packing inspection to ensure all the components, accessories, and documents have been enclosed.

Documents enclosed:

• Inspection Check for Shipping
• material Certification if need
• Latest Injection Report
• Drawing for Components of Mould
• Final Mold Layout
• Share Components List
• Feedback Form of Mould Quality

Custom Injection Molding Actual Performance

Rapid Turnaround: We offer the most efficient, safe, and affordable transportation

the method, our special channel shipping price is cheaper than any customer’s own forwarder price to suit your time and budget requirement.

Online Quotation: We provide a standard quotation for custom injection molding 24 hours in time through EMAIL, WECHAT, WHATSAPP, and SKYPE interactive online quotation system, also including mold and rapid prototyping parts processing.

Low Cost:  20 years complete supply production chain layout, so that we really complete each link of high efficiency, fully reflect the offshore manufacturing industry with a lower cost structure of facilities, in order to provide prices below our pure domestic competitors.

High Quality:  We are ISO9001：2015 certified, use CMS digital system so that the full qualified rate of mass product manufacturing is possible. The whole process of digital management makes the traditional manual single-piece measurement method can not compete.

A real example of custom molding TESLA Motor parts

CNMOULDING customers come from a variety of world-renowned automotive industries, such as electric car industry leader Tesla Motors. Electric cars have a large number of electronic parts to replace traditional car hydraulic parts, plastic shells need to protect the subtle automotive electronics parts, safely consistent with the brand established by Tesla. this is a high order for an offshore Chinese supplier, but we consistently produce and deliver quality parts that meet the required specifications. The injection mold is perfect for an enviable position.

The customer takes the initiative to cooperate with us. because producing specialized, complex solutions is commonplace. These include all kinds of car buckle, protective cover, decorative panel. produce $3 million of molds and automotive products annually.

our technical department works closely with the engineers of the customer to optimize the component design to reduce the development cost, introduce Moldflow analysis, identify and correct the problems that will be in molding and materials in advance before production. Custom features also allow medium-term production adjustments, including components modifications after assembly. The result of custom injection molding is quite different from that of the traditional mould.

 

5 types of mold surface treatment

 

5 types of mold surface treatment

 

The application of surface treatment in the mold is the most effective way to provide mold quality and service life and reduce cost.

By adopting different surface treatment technologies, only the composition, organization, and performance of the surface layer of the mold can be changed. Thus greatly improving and improving the surface performance of the mold. Such as hardness, wear resistance, friction performance, stripping performance, heat insulation performance, corrosion resistance. And high-temperature oxidation performance. The special properties of the cavity surface, such as anti-scratch ability, release ability, anti - bite, etc. Several times, dozens of times to improve the service life of the mold.

It is of great significance to improve mold quality, reduce the production cost, improve production efficiency. And give full play to the potential of mold materials. What methods of injection mold parts surface treatment in China?

The effect of injection mold surface treatment

1，Plastic Mold Parts

In-mold processing, the surface treatment can make the parts for the following properties: Increasing surface hardness, increase the compressive strength, abrasion resistance, improve corrosion resistance, and improve sliding, etc.

2, Plastic Molding parts surface treatment methods.

3, The injection mold Surface treatment method is many in China. But for the injection molded parts, the main methods of surface treatment are the following.

 

1，Carburizing

Carburizing is to the steel surface infiltration carbon atoms. It is to put the parts into can release the active carbon atom medium, heat insulation, make activated carbon atoms permeability and the surface of the steel. Its purpose is to improve the surface of the carbon content, the subsequent heat treatment, the surface hardness increased, While the core remains resilient. Therefore, carburizing steel must be 0.15% ~ 0.25% (mass fraction), the carbon content of mild steel. Methods include solid carburizing, carburizing liquid carburizing. And gas carburizing, which is a widely used gas carburizing.

2，Nitriding (also called nitride)

Nitriding is to the steel surface infiltration nitrogen atoms. Its purpose is to improve the parts table surface hardness, wear resistance, corrosion resistance, and fatigue strength. At present, the most widely used method of nitriding is gas nitriding. It is to put the parts into the airtight furnace, the ventilation with NH3, heating to 500 ~ 600 ℃, the ammonia decomposition of reactive nitrogen atoms. The nitrogen atom is easy to be absorbed by the workpiece surface and spreading inside, forming a nitride layer. The nitriding layer is 0.1 ~ 0.6 mm. The nitriding layer has high hardness and excellent dimensional stability. And can noticeably improve wear resistance and fatigue strength, corrosion resistance has greatly improved. In the mold processing, almost all steel nitriding processing. But it's a longer production cycle, high cost.

3，Hard chromium plating

Hard chrome plating is will adopt the method of plating chromium plating on the surface of parts. Thereby gaining the surface of the hard and wear-resistant. It contains the abrasive plastic molding parts, the hard chromium plating layer is very effective. In addition, the hard chromium layer can not only reduce the wear and tear, and can significantly improve the corrosion resistance of parts. It can also be used when repairing the wear surface hard chromium plating method processing.

4，Hard nickel plating

Hard nickel plating is to use the chemical method will nickel the plating layer on the surface of parts. In the process, the deposition of the nickel layer does not use imposed by the electron flow. so you don't happen like electroplating on the edge, especially along the edge to form the different thickness of electroplating film formation (edge) of the phenomenon. This method of nickel plating in the hole, opening, and the place such as contour surface defects will not appear. The nickel plating layer often about 40 microns thick. It can form has good corrosion and wear resistance of the surface.

5，Coated hard layer

In order to make the part surface with high wear resistance and corrosion resistance. There is new technology is in the surface coated with titanium nitride and similar material for the grass-roots approach. It is easy to operate, and the effect is very good.

Do you have a project need to find china injection mold company today, contact us now

We can give you a good solution for your mold making.