Product Description

Introduction

As a leading plastic injection molding company, Moldor Plastic has achieved rich experiences of design, engineering, and manufacturing value-added plastic mold and supplying molded products to customers all over the world. Equipped with state of the art machines and skilled workers, we provide you the high-quality products at very competitive price.

Our plastic parts are widely used in Auto Accessories, Electronics, Household appliances, Medical Devices, Game Players, Mechanical devices and other fields.

QUALITY FIRST & SERVICE FIRST & CUSTMER FIRST is our aim,MAKE EVERY PROJECT A SUCCESS is  our mission.We sincerely hope to be your trustworthy partner for long-termcooperation.

Product Details

Custom Your Own Plastic Parts in MOLDOR PLASTIC !

According to your drawings or samples, we can provide one-stop solutions service from designing, prototyping, molds 
making, processing, spraying, assembling, inspecting, packaging to delivering, everything will be managed to the 
smallest detail. 

If you have products or ideas that require injection mold & molding, Moldor Plastic would like to serve you. Our knowledgeable engineers and designers will offer suggestions on how to manufacture your product to allow for a professional 
look as well as for ease of manufacturing.

Please kindly email us your inquiry,  and our professional team is committed to providing personal service at the 
lowest possible prices to you.Your any inquiry is welcomed and will be replied soon.
 

Related Products

MOLDOR PLASTIC Advantage:

In-house mold design and building capabilities to improve work efficiency.
 

NDA agreement can be signed to protect customers’ idea 

and design.

Professional sales team. Good communication skills and 

after service.

Professional design team, mold maker engineer. OEM/

ODM service.

Professional QC and R&D teams to assure high quality.

Delivery on time.

We can do more than you expected…
 

1. Manufacturing experience for over 15 years.
2. Customized designs and services are accepted.
    Professional design team and engineering team offer 
    technical support.
3. Manufacturing process control. 
4. Small volume production or mass production is available.

                    5. Trained workers and professional QC team to assure the 
                         product quality.
                    6. Inspection report and material test certificates are 
                        available upon requests.
                    7. Standard: HASCO or as customer’s requirement.
……

Factory Capability

Our Service

Step 1: Product Design: We provide product design service as customers’ request.
Step 2: Mold Design: We communicate & exchange the detail information with our customers to make a good mold design.
Step 3: Mold Making: Manufacturing in-house, we send the mold processing photos and videos to customers.
Step 4: Mass Production: We start plastic injection parts production after customers confirm samples.
Step 5: Assembly: We can supply assembly service as customers’ requests.
Step 6: Value added Service: Available, such as screen printing, plating, custom packaging and etc.

Packaging & Shipping

FAQ

Q1:Are you a trading company or factory?
A1:We are factory.

Q2:What type of information is required for quoting a molding project?
A2:Please send your drawings or sample to us.

Q3:How long do you take to build a mold?
A3:The production timeline depends on your specific needs, normally the lead time is 25-45days.

Q4:How small or large of a plastic part will you produce?
A4:Our machine capabilities cover a range from 60-ton to 500-ton clamping forces.

Q5:What kind of steel do you use for plastic moldings?
A5:We can use any type of steel appointed by customer or popular in the market.Such as P20,718,8407,NAK80,H13,S136,

DIN 1.2738,DIN 1.2344,etc.

Q6:What types of materials can be molded by your injection products?
A6:Polystyrene,ABS,PET,TPR,TPU,PVC,Nylon,Acetal,Polypropylene,Polyethylene, Polycarbonates and etc.

Q7:Do you offer secondary service such as assembly, packaging or painting?
A7:Yes,such as assembly, painting, tapping, ultrasonic welding, trimming, sorting, customized packaging and etc.

Q8:If I have an existing tooling, could you use it to mold my project?
A8:Most certainly, if existing tooling is available, we can use them.

Q9:Can you mold around inserts or metal components?
A9:We can do insert molding with just about any metal and non-metal components.
 

Contact Us

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Importance of Wall Thickness in Injection Molded Parts

When designing injection molded parts, it is important to keep the wall thickness uniform. Uneven wall thickness can lead to warping and sinking. To minimize these problems, injection molded parts should have a wall thickness of 40 to 60 percent of the adjacent wall. The thickness of the wall should also fit within the range recommended for the resin that is being used. If the wall thickness is too thick, it should be cored out. Unnecessary wall thickness alters the dimensions of the part, reduces its strength, and may require post-process machining.

Designing out sharp corners on injection molded parts

Designing out sharp corners on injection molded components can be a challenging process. There are several factors to consider that impact how much corner radius you need to design out. A general rule is to use a radius that is about 0.5 times the thickness of the adjacent wall. This will prevent sharp corners from occurring on a part that is manufactured from injection molding.
Sharp corners can obstruct the flow of plastic melt into the mold and create flaws on parts. They can also cause stress concentration, which can compromise the strength of the part. To avoid this, sharp corners should be designed out. Adding radii to the corners is also an effective way to avoid sharp angles.
Another common problem is the presence of overhangs. Injection molding parts with overhangs tend to have side-action cores, which enter from the top or bottom. As a result, the cost of making these parts goes up quickly. Moreover, the process of solidification and cooling takes up more than half of the injection molding cycle. This makes it more cost-effective to design parts with minimal overhangs.
Undercuts on injection molded parts should be designed with a greater radius, preferably one or two times the part’s wall thickness. The inside radius of corners should be at least 0.5 times the wall thickness and the outside radius should be 1.5 times the wall thickness. This will help maintain a consistent wall thickness throughout the part. Avoiding undercuts is also important for easy ejection from the mold. If undercuts are present, they can cause a part to stick inside the mold after it has cooled.
Keeping wall thickness uniform is another important issue when designing plastic parts. Inconsistent wall thickness will increase the chance of warping and other defects.

Adding inserts to injection molded parts

Adding inserts to injection molded parts can be a cost-effective way to enhance the functionality of your products. Inserts are usually manufactured from a wide range of materials, including stainless steel, brass, aluminum, bronze, copper, Monel, nickel/nickel alloy, and more. Selecting the right material for your parts depends on the application. Choosing the correct material can help prevent defects and keep production cycles short. The insert material should be durable and resist deformation during the injection molding process. It must also be thin enough to provide the desired grip and have a proper mold depth.
The benefits of adding inserts to injection molded parts include the ability to design parts with unique shapes. These parts can be aesthetically pleasing, while still remaining durable and resistant to wear and tear. In addition, insert molding allows products to have a good external finish. In addition to being cost-effective, insert molding is considered a more efficient manufacturing method than other conventional methods.
Adding inserts to injection molded parts is an excellent way to enhance the strength and performance of your products. There are many different types of inserts, including threaded nuts, bushings, pins, and blades. Some types are even available with knurled outer surfaces that help them adhere to plastic.
In addition to being cost-effective, insert molding is environmentally friendly and compatible with many types of materials. Typical inserts are made of metal or plastic. Depending on the application, stiffening inserts may also be made from wood.

Importance of uniform wall thickness

The uniformity of wall thickness is an essential factor in the plastic injection molding process. It not only provides the best processing results, but also ensures that the molded part is consistently balanced. This uniformity is especially important for plastics, since they are poor heat conductors. Moreover, if the wall thickness of an injection molded part varies, air will trap and the part will exhibit a poorly balanced filling pattern.
Uniform wall thickness also helps reduce shrinkage. Different materials have different shrinkage rates. For instance, thick parts take longer time to cool than thin ones. As the part’s thickness increases, cooling time doubles. This relationship is due to the one-dimensional heat conduction equation, which shows that heat flows from the center of the part toward the cooling channel. However, this relationship does not hold for all types of plastics.
The general rule for maintaining uniform wall thickness in injection molded parts is that walls should be no thicker than 3mm. In some cases, thicker walls can be used, but they will significantly increase production time and detract from the part’s aesthetic appeal and functionality. Furthermore, the thickness of adjacent walls should be no thicker than 40-60% of each other.
The uniformity of wall thickness is critical to the overall quality and efficiency of the injection molding process. An uneven wall thickness can cause twisting, warping, cracking, and even collapse. A uniform wall thickness also reduces residual stress and shrinkage. Injection molded parts are more stable when the wall thickness is uniform.
An injection molded part with thick walls can be problematic, especially when the molded parts are shaped like a cube. A non-uniform wall thickness can result in problems and costly retooling. Fortunately, there are solutions to this problem. The first step is to understand the problem areas and take action.

Using 3D printing to fabricate molds

The use of 3D printed molds allows manufacturers to manufacture a wide range of injection molded parts. However, 3D-printed molds are not as strong as those made from metallic materials. This means that they do not withstand high temperatures, which can degrade them. As such, they are not suitable for projects that require smooth finishing. In order to reduce this risk, 3D-printed molds can be treated with ceramic coatings.
Using 3D printing to fabricate injection molds can help reduce costs and lead times, allowing manufacturers to bring their products to market faster. This process also has the advantage of being highly efficient, as molds made using 3D printing can be designed to last for many years.
The first step in fabricating an injection mold is to design a design. This design can be complex or simple, depending on the part. The design of the mold can be intricate. A simple example of a mold would be a red cup, with an interior and exterior. The interior portion would have a large cone of material protruding from the other side.
Injection molding is an effective way to produce thousands of parts. However, many engineering companies do not have access to expensive 3D printers. To solve this problem, companies should consider using outside suppliers. In addition to speeding up the manufacturing process, 3D printing can reduce the cost of sample parts.
Plastic injection molding still remains the most popular method for high volume production. However, this process requires a large up-front capital investment and takes a while to adapt. Its advantages include the ability to use multiple molds at once, minimal material wastage, and precision dosing. With an increasing number of materials available, 3D printing can be a smart option for companies looking to manufacture a variety of plastic parts.

editor by czh