China Standard Plastic Molding Companies Rapid Prototyping Precision Injection Molded Parts injection moulding electrical parts

Product Description

Company Profile

• Specialized in microfluidics, die cutting, laser cutting, screen printing, LSR, plastic
injection molding, bonding (laser & ultrasonic welding), blister packing, dry reagent
handling, assembly, soft goods/wearable manufacturing, and packaging;
• Class 10-100K clean rooms and GMP facilities;
• Offices in Los Angeles (USA) and Singapore;
• Manufacturing sites in Malaysia and China.
 

 

 

Manufacturing Capablities

Types of Injection Molding Used for Medical Prototypes

Injection molding comes in many forms and each type is utilized based on the desired application for the medical device. Hochuen provides all these injection molding processes based on what application would be ideal for the medical device.

Hochuen has experience injection molding with the following materials: Medical grade PC, PMMA, COC, COP, PS, PP, TPE/TPU, LSR, ABS, etc. Each project however has different requirements and we will work with you to determine what works best for your project.

Injection Molding Type:

Ordinary Injection Molding
Double Color Injection Molding
Over Molding
Insert Molding
LSR
Our competence:
Hochuen Medical has a large machine shop equipped with high-speed and high-precision CNC machines to make injection molds and fixtures in house. Our turn-around time of prototype molds is 1~2 weeks and production molds is 4-6 weeks depending on the design complexity.

Injection Molding Applications for Medical Device
Injection-molded parts for medical devices can be used in many different applications, including:

Point-of-care Testing IVD devices
Microfludic Cartridge Devices
Off-Shelf Disposables( Vials, Transfer Pipettes, etc.)
Medical Wearables
Testing Kits

Injection Molding Type Description Description Product precision
Ordinary injection molding All electric injection molding machine,and some high speed machine Normal: 0.01~0.03mm
High Speed: 0.003~0.005mm
Double-color injection molding Finished part injected by 1 time, including hard and soft
material
0.02~0.05mm
Over molding First hard or soft material and then soft or hard one, twice
shots
0.02~0.05mm
Insert molding Hardware inserting 0.02~0.05mm
LSR Liquid silicone rubber injection molding 0.05~0.1mm

Injection Molding Workshop

 

Product Description

Company Name Hochuen Medical Technology Co., Ltd.
Business Type Manufacturer/OEM Factory
Manufacture Capabilities Injection molding, microfluidic devices, adhesive, die cutting, lamination, LSR, bonding (including laser welding, ultrasonic welding, heat staking, etc.), dry reagent handling, reagent blister packing, wet lab process, PCR QC test, CNC precision machining, laser machining, rapid prototyping, label printing, softgood manufacturing, sterilization/packaging,etc.
Plastic Materials ABS, PC, PP, PS, POM, PMMA, PE, PA, HIPS, TPU, PE, BOPP, EPDM, Liquid Silicone Rubber (LSR), etc.
Mould Precision +/-0.01mm
Mould Life 500,000 Times Shots
Mould Cavity Single cavity or multi cavity
Runner System Hot runner and cold runner
CNC/Injection Molding Machines We have Makino, Fanuc, Sodick, CZPT injection molding machines from 50 tons to 450 tons for prototyping and large volume production.
Advanced Testing Equipment Prismo 3D equipment for inspection, 2D testers and other
Colors Available Black, white, clear, red, blue, or according to customer’s requirements.
File Format Solidworks, DWG, PDF, AI, STP/STEP, etc.
Quality Management ISO9001, ISO14001, ISO13485(ALL THE MEDICAL PRODUCTS MEET F.D.A STHangZhouRDS), ISO45001
Other services offered Printing, die cutting, CNC machining, assemblying and packaging, etc.
Payment Method T/T or online transactions(by trade assurance) for option
Products Applications Medical instrument parts and medical disposables, consumer electronics, sports, beauty and personal care products, baby’s products, biosensors for DNA analysis or chemical research, Medical foams/tapes or thermal insulation pad for other biometrics,small parts for automobile, aviation and aerospace equipments, etc.
Prototyping Drawings and quantities will be needed for a detailed quotation. Free Sample will be offered for approval after PO for molding is confirmed.

Our Advantages

1.Work with world-class customers and suppliers;
2.Rapid ramp up capability to mass production;
3.Superior quality and cost benefits;
4.Superior engineering development service;
5.Stringent IP protection for clients;
6.Comprehensive in-house manufacturing and engineering capabilities;
7.Fast response and rapid turn-around;
8.Hochuen has been producing detection cartridges for a dozen of
clients during pandemic.

Certifications

Our Global Business Partners

FAQ

1.How do you cut the parts?
We have laser cutting, die cutting, CNC machining and stamping.

2.What Certificate do you have?
We have certified with ISO 14001, ISO 45001, ISO 13485, and FDA registered.

3.What kind of injection molding you do?
Normally we have ordinary injection molding, double color injection molding, LSR, overmolding, insert molding, etc.

4.What tons of injection molding machine do you have?
From 50 tons to 450 tons, we mainly focus on consumable medical device, LSR (liquid silicone rubber) also available, and we do mold in house.

5.How do you assemble the parts?
Typically we have PSA bonding, laser welding, ultrosonic welding, diffusion bonding, etc.

6.Are you available only prototyping or from prototyping to manufacturing?
We are an OEM manufacturer, and provide 1 stop service from prototyping to mass production.
All of our products are customized.

Shipping Cost:

Estimated freight per unit.



To be negotiated
Warranty: Customized
Shaping Mode: Injection Mould
Surface Finish Process: Heat Treatment
Customization:
Available

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Customized Request

Injection molded partt

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

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.

Cost

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 Standard Plastic Molding Companies Rapid Prototyping Precision Injection Molded Parts   injection moulding electrical partsChina Standard Plastic Molding Companies Rapid Prototyping Precision Injection Molded Parts   injection moulding electrical parts
editor by CX 2023-05-22