Product Description

Product Name :High Quality Plastic Injection Molded Parts– Plastic Injection Parts

HangZhou Stick Industry is a company has 10 years’ experience on plastic injection and has a pro engineer team

helping customers with any problem. We are 1 of leading ISO 9 shots Brand STK or Customized  Delivery Time  In about 30 days for new production  Packing  Standard export packing or customized  MOQ 1000 pcs FOB port HangZhou, China Shipment Air or Sea

Plastic Materials Applies

Company Information

Our main production area is equiped with 40 molding machines of various size,
ranging from 80 tons to 1400 tons clamping pressure.

This provides us with teh capability to mold shot weights from 0.1 gram to over
10000 grams with flexible production runs. 

Plastic Injection Solution:

*  Precision Injection Molding: From design consultancy & prototype tooling to high-volume  world-class production

*  Parts are widely used: Industrial, Automotive, Electronics & Medical

Technical Skills – Development, Design Skills
*  Design Consultation & Assistance

*  Pro/E, CAD/CAM/CAE including Solid Works(TM) and mold flow analysis

*  Material Selection Assistance

*  Quick turn-around prototype support

*  Secondary Operations including machining, welding & assembly

Molding – High Precision, High Concern
*  Plastic Decorating: In-Mold Decorating (in-mold labeling), pad printing & hot stamping

*  40 Molding machines from 80TONS to 1400TONS

*  High precision molding from medical to fiber optics components

Secondary Operations – Value Added Service
*  Pad Printing

*  Sonic Welding

*  Assembly & Packaging

Plastic Injection Equipment List

Quality Testing Facility

Packing & Delivery

FAQ:
 

Q1: Are you trading company or manufacturer ?

A: We are factory. We are experienced manufcturer, have our own factory and warehouse.

Q2: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days for the OEM Parts, it is according to quantity.

Q3: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q4: What is your terms of payment ?

A: Our preferntial payment term is T/T 
     Mould Tooling : 50% down payment, 50% balance against the sample approval. 
     Mass Production: 50% down payment , 50% against the B/L copy 

Q5: What do we need if you want a quote?

A: Please kindly send us your 2D & 3D drawing of your product. The need the detail specifications as follows :
    1. Material 
    2. Surface treatment 
    3. Estimated production volume

Q6: How do I know about the production ?

A: We will double confirm your requirements and send you the samples before the mass production . 
     During the mass production , we will keep you informed of any progress.Besides, we will do 100% quality inspection 
     before shipment

Q7:How do we know about the deliery status ?

A: We will immediately inform you the tracking number once we get it from shipping agent. Besides, we will update the latest shipping information. 

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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

When 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

Draft 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.

Cost

There 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.

editor by czh