China wholesaler China manufacturer custom precision plastic injection molding mold injection molded plastic boxes injection molded parts kit for sale

Model Number: OEM
Plastic Modling Type: injection
Processing Service: Moulding
Product name: Custom injection Plastic Parts
Material: ABS, PC, PP, nylon, PA6
Color: Customer Requirement
Service: Customized OEM
Mold Material: 45#, P20, H13,718
Usage: industrial products
Feature: Eco-friendly
Design service: Accepted
Package: Carton Package
Injection Mold Life: 500000 Shots
Packaging Details: In carton box and wooden crate box
Port: HangZhou

Plastic injection moulding servicesPlastic Material:PS, ABS, PP, PVC, PMMA, PBT, PC, POM, PA66, PA6, PBT+GF, PC/ABS, PEEK, HDPE, TPU, PET, PPO,…etc.
Other materials:Rubber, Slilconce rubber, LSR
Quality:Meet RoHs and SGS standard
Feature:Non marking and Non flash
Size:According to your 2D or 3D Drawing
Package:Carton box or Standard exported Wooden box packed, Fumigation process(upon required)
Mold Building Lead Time:Normally 4-5 weeks, injection part inspection report (upon required).
Export Country:Europe, America, Australian, UK, Canada, France, Germany, Italy, Japan…etc.:Injection Mould, Plastic Mold, Overmould, 2K Mould, Cold Runner System LSR Mold
Mould Base:Hasco Standard, European Standard, World Standard
Mould Base Material:LKM, FUTA, HASCO, DME,…etc. Or as per Customer’s Requirment.
Surface Finish:Texture(MT standard), High gloss polishing
Cavity/Core Steel:P20, 2311, H13, 2344, Starvax 420, 236, AdC3, S136, 2312, 2379, 2316, 2083, Nak80,
Hot/ Cold RunnerHUSKY, INCOE, YDDO, HASCO, DME, MoldMaster, Masterflow, Mastip, ZheJiang made brand.
Mould Life:2,000,000 to 5,000,000 Shots. (According to your working environment.)

Mold Material45#,P20 steel, 718, 2738, H13, NAK80, 2344, 2343, S136, etc
Mold TypePlastic Injection Molding
Plastic MaterialABS, PA, PA66+GF, POM, PC, PP, PET, TPE, PVC, HDPE, etc
Mold StandardHASCO, DME, MISUMI, JIS, LKM, etc
Mold Tooling EquipmentLathe,Milling,Grinder,Drill,CNC,EDM,Wire cut machine,Punch machine
Injection Mold Machine16 Sets With Model 50T to 300T
Gate TypeSide Gate, Sub Gate, Direct Gate, Hook Gate, Pin Point Gate, etc
Runner TypeCold Runner or Hot Runner
CavitySingle or Multi cavities
Mold Shotting Life45#:50,000 to 100,000 shotsP20:100,000 to 200,000 shots718: 200,000 to 300,000 shotsH13: 300,000 to 500,000 shots
Tool Lead TimeGenerally mold making will take around 30 days and 7-10 day to mass production
PackageWooden packing box for molds and Generally inner packed in opp bags, outside packed in standard export carton with shipping marks,and the cartons will be full of bubble bags.
Design & Program Softwares:CAD, CAM, CAE, Pro-E, UG, Soild works, Moldflow, CATIA.
Equipments:High speed CNC, Standard CNC, EDM, Wire Cutting, WEDM, Grinder, Plastic Injection Molding Machines from 50-300T available.
Plastic Injection Moulds

Plastic Injection Products

Process Flow

Company InformationOur factory HangZhou Juyinhui Plastic CZPT Products Co.,Ltd offers plastic injection molding service and specializes in various plastic molds for automotive, home appliances, electronics, sports gear as well as general industrial OEM applications.Our plastic injection factory is covering 10000 square meters flooring space. At present, our company has over 90 employees and capital assets to more than 35 million RMB. We have the capacity to produce 40-50 injection moulds per month.Our mission is to be a professional, trustworthy and creative injection toolmaker and plastic injection molding company, Our top level management is always involved, and we use a modern management system. Our goal is for zero defects. We make sure to use the best techniques to produce the highest quality products to our customers. We keep continuous improvement, and innovation to be your best partner for your company.

Our ServicesWe can provide on-stop service for plastic product customization works. We provide mold design, precision plastic mold making, custom plastic injection molding, Assembly Work, Pad Printing, Silk Screen Print, Transfer Printing, Paint, Ultrasonic Welding and Packaging Services.
Product Design:Based on customers provided samples or sketch or concept, We Provide Product Design Service As Customer’s Request.CZPT Design:
When confirm the mold tooling order, We will communicate & exchange the opinion with customers during Mold Deisgn process, our experienced designer will make DFM for customers approval.CZPT Making:Once customers appoved the tool DFM, We Start the mold making and send photos and short videos to show tooling processing status.
Sample running and Low Volume Order qauantity production:
Once the CZPT finshed, we will soon make samples and send to customer for confirming.

Mass Production:
After customer confirmed the sample, we will start mass production plastic products.

Assembly Work:We Also Provide Assembly Service For Our Customers.
Painting & Coating Services:We can provide coating and rubber coating service for your customers.

Printing Services:We Also Provide Silk Screen Printing, Pad Printing, Heat Transfer Printing Service.

Packaging & Shipping
FAQQ1: Are you trading company or manufacturer ? A: We are 100% direct factory, having our own’s factory buildings and equipment.Welcome to visit us at any time.
Q2: How do you control the quality?A: (1)Material inspection–Check the material surface and roughly dimension. (2)Production first inspection–To ensure the critical dimension in mass production. (3)Sampling inspection–Check the quality before sending to the warehouse. (4)Pre-shipment inspection–100% inspected by QC assistants before shipment.
Q3: How about the lead time?A: Generally, 1-2 weeks for samples, 3-4 weeks for mass production.
Q4: Can I get a quote without drawings? A: Sure, we appreciate to receive your samples, pictures or drafts with detailed dimensions for accurate quotation.
Q5: Is it possible to know how are my products going on without visiting your company?A: We will offer you DFM report and send weekly reports with digital pictures and videos which show the machining progress.
Q6: What is your payment terms?A1: Mold Payment: 40% deposit by T/T in advance, 30% second mold payment before sending out the first trial samples, 30% mold balance after you agree the final samples. A2: Production Payment: 50% deposit in advance, 50% before sending out the final goods.

Designing Injection Molded Parts

Designing injection molded parts involves careful consideration of various parameters, including the wall thickness and draft angle. These factors are essential for a strong, durable part. Improper wall thickness can lead to sinking and warping defects. To avoid these issues, ensure that the walls of your injection-molded parts have a uniform thickness that does not vary too much from the rest of the part.

Designing out sharp corners in injection molded parts

Injection molded parttWhen designing an injection molded part, it’s important to consider the corner radius. Sharp corners will create more stress, and this will lead to weak spots and cracks. Creating a radius around the corner helps distribute stress evenly and allows easier material flow and part ejection. Additionally, sharp corners in a mold can collect contaminants and create defects, including surface delamination.
Sharp corners in injection molded parts are a common source of stress and can cause the part to become damaged during the manufacturing process. In addition to trapping air, sharp corners may also lead to localized high temperatures that degrade the part. To reduce these risks, consider adding radii to all sharp corners.
Another important design factor to consider is wall thickness. Parts that have a smooth transition between sections should be designed with a minimum of five millimeters of wall thickness. Anything thicker will increase production cycle time and may also negatively impact mechanical properties. The use of fillets and chamfers can also help avoid these problems.
Designing out sharp corners in injection molded components can prevent costly problems from occurring during the manufacturing process. While the process is simple and straightforward, it needs to be done correctly to ensure quality. By following best practices, designers can ensure their parts won’t develop any problems or sink, warp, or voids. A poor design can also cause damage to the mold, which can cost thousands of dollars and hundreds of hours to redesign.
When designing injection molded parts, designers should consider the following guidelines. Incorporate internal and external radiuses. The internal radius (also called a fillet radius) is designed into the mold for improved quality and strength during the molding process. This radius is typically located on the inside corners or the bottom of a compartment. It can also be used for connecting walls and ribs. An external radius, on the other hand, is known as a round radius.
A right-angled part with sharp corners has a tendency to be loaded by pushing the vertical wall to the left. This creates a high-level of molded-in stress in the part. The resulting part may be weaker than expected because of the increased stress on the corner.

Importance of uniform wall thickness

Uniform wall thickness is a critical factor when designing injection-molded parts. This ensures that molten polymers can flow efficiently throughout the part. Additionally, it facilitates ideal processing. Varying wall thickness can cause problems during molding, such as air trapping, unbalanced filling, and weld lines. To ensure that your injection-molded parts are uniform, consult a plastic injection molding company that specializes in uniform wall thickness.
Injection-molded parts are more durable when the walls are uniform. A thin wall reduces the volume of material used in the part. However, thin walls can break during ejection. In addition, thin walls increase the possibility of voids. To prevent such problems, use larger machines that can produce parts with uniform wall thickness. This way, parts are easier to handle and ship.
Another important factor is the presence of gussets. These are support structures that stick out from a part’s surface. Gussets are useful for preventing warping, because they provide rigidity to thin unsupported sections. For this reason, gussets are essential when designing an injection-molded part.
Uniform wall thickness is especially critical in parts that have bends or rims. A uniform thickness helps maintain the mechanical strength and appearance of a part. However, this can be tricky as you may need to balance optical properties with mechanical ones. At Providence, we have the experience to help you navigate these challenges and produce quality parts.
Proper wall thickness is important for many reasons. It can affect both cost and production speed. The minimum wall thickness for injection molded parts depends on the part size, structural requirements, and flow behavior of the resin. Typically, injection molded parts have walls that are 2mm to 4mm thick. However, thin wall injection molding produces parts with walls as thin as 0.5mm. If you’re having trouble choosing the right wall thickness, consult an experienced injection molding company that can help you determine the appropriate wall thickness for your part.
Uneven wall thickness causes problems during injection molding. The uneven wall thickness may make the material flow through the part too quickly, or it may cause it to cool too slowly. This can lead to warping, twisting, or cracks. Even worse, uneven wall thickness can cause parts to become permanently damaged when they are ejected from the mold.

Importance of draft angle

Injection molded parttDraft angles are an important part of design for injection molded parts. These angles are necessary because friction occurs on surfaces that come into contact with the mold during the molding process. A part with a simple geometry would only require a single degree of draft, but larger parts would need at least two degrees.
Almost all parts requiring injection molding will require some amount of draft. The better the draft, the less likely the parts will have a poor finish and may bend or break. Furthermore, parts with inadequate draft will take longer to cool, extending cycle times. Moreover, if the parts are too thick or have too little draft, they may become warped.
Having a draft angle in injection molding is very important, especially if the mold has sharp corners. Without it, parts will come out scratched and will shorten the life of the mold. In some cases, parts may even not be able to eject from the mold at all. To prevent this, air needs to be allowed to get between the plastic and metal. This allows air to escape and prevents warping during ejection.
The importance of draft angle is often overlooked in the design process. Adding this angle to the mold can help prevent problems with mold release and reduce production costs. A draft angle will also allow parts to release from the mold more easily and will lead to better cosmetic finishes and fewer rejected parts. Additionally, it will reduce the need for costly elaborate ejection setups.
Draft angle should be added to the design as early as possible. It’s crucial for the success of the injection molding process, so it is best to incorporate it early in the design process. Even 3D printed parts can benefit from this detail. The size of the draft angle is also important, especially for core surfaces.
A draft angle can be large or small. The larger the draft angle, the easier it is to release the mold after the mold is completed. However, if the draft angle is too small, it can lead to scrapes on the edges or large ejector pin marks. Draft angles that are too small can lead to cracks and increase mold expenses.


Injection molded parttThere are many factors that contribute to the cost of injection-molded parts, including the material used for the mold and the complexity of the design. For example, larger parts will require a larger injection mold, which will cost more to manufacture. Additionally, more complex parts may require a mold with special features. Mold makers can advise you on how to design your part in order to reduce the overall cost of an injection-molded part.
One of the biggest costs related to the production of injection molded parts is the cost of the tooling. Tooling costs can reach $1,000 or more, depending on the design, materials, and finishing options. Tooling costs are less if the part quantity is small and repeatable. Higher part volumes may require a new mold and tooling.
Injection-molded parts’ cost depends on the material used and the price of procuring the material. The type of material also influences how long the part will last. Plastics that contain high percentages of glass fibers are abrasive and can damage an injection mold. Therefore, they are more expensive but may not be necessary for certain applications. Additionally, the material’s thermal properties may also affect the cycle time.
Mold size is another factor that impacts the cost. Larger molds require more CNC machinery and building space than smaller molds. Additionally, the complexity of the part will also impact the cost. Injection molds with sharp corners and complex ribs will cost more than small injection molds without intricate designs.
Injection molding is a complex process that requires a variety of moving parts. During the process, a critical piece of equipment is the injection die. This machine is a large part of the process, and comes in different sizes and shapes. Its purpose is to accept the hot plastic and machine it to extremely precise tolerances.
If your project requires a complex product with a high degree of complexity, injection molding is an excellent choice. It is ideal for initial product development, crowdfunding campaigns, and on-demand production. Mold modifications can also lower the cost of injection molding.
China wholesaler China manufacturer custom precision plastic injection molding mold injection molded plastic boxes     injection molded parts kit for saleChina wholesaler China manufacturer custom precision plastic injection molding mold injection molded plastic boxes     injection molded parts kit for sale
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