China best Customized liquid silicone rubber injection molded parts injection molded plastic auto parts

Model Number: As per drawing part number
Shaping Mode: Silicone Mould
Product Material: Rubber
Product: For all industries
Colour: Any color is OK
Material Type: NBR,EPDM,SILICONE,FKM,SBR,NR,etc.
Size: As per drawing dimensions
Hardness Range: 20-90 Shore A
Application: For all industries
OEM / ODM: Available
Certification: ISO9001
Packaging Details: PE plastic bags then to the carton / as per your request
Port: XiaMen/other port as you want

Liquid Silicone Rubber Seals are available in the following elastomers:

  • Aflas or Kalrez (FFKM)
  • Acrylate Rubber(ACM)
  • Butyl Rubber(IIR)
  • Ethylene-propylene (EPR, EPDM)
  • Ethylene Acrylate Rubber(AEM)
  • Fluorocarbon (FKM/FPM)
  • Fluorosilicone(FVMQ)
  • Hydrogenated Nitrile (HNBR)
  • Liquid Silicone Rubber(LSR)
  • Neoprene Rubber(CR)
  • Nitrile Rubber (Buna-N/NBR)
  • Natural Rubber(NR)
  • Polyurethane(PU)
  • Silicone Rubber
  • Styrene-butadiene Rubber (SBR)
  • If you need a special compound for the Liquid Silicone Rubber Seals, we can develop 1 for you.

    Product Info
    Name Flat Rubber Gaskets
    Material Type NBR,EPDM,SILICONE,FKM,SBR,NR,etc.
    Hardness Range 20-90 Shore A
    Color Any color is OK
    Size As per drawing dimensions
    Tolerance Standard ISO2768-M or ISO3302-1:2014 CLASS M2
    Material Characteristic See below rubber materials properties
    Application For all industries
    Certificates F D A, U L, NSF61, KTW, W270, ACS, AS4571, WRAS, EN681, EN549, ROHS, REACH, USP CLASS VI
    OEM / ODM Available
    Packing Details PE plastic bags then to the carton / as per your request
    Production Capacity & Lead Time
    Production Capacity 2500 tons per month
    Lead Time 7 days for prototype tooling & samples, 14 days for production mold, 14-28 days for MOQ
    Shipping & Payment Terms
    Port of Loading XiaMen/other port as you want
    Shipping Method SEA,AIR,DHL,UPS,FEDEX,TNT, etc.
    Payment Terms T/T, L/C, Paypal, Western Union
    Rubber Specification & Inspection Standard
    Rubber Specification ASTM D2000, SAE J200
    Quality Acceptance Criteria According to customer’s requirements

    Technical Info

    Company Information
    Certifications
    Customer Case
    Workshop&Office
    Production Equipment

    FAQ
    Q 1. What’s the payment term?A: We accept T/T 30% deposit and 70% balance against copy of B/L or L/C at sight, West Union,VISA,Paypal is also accepted.
    Q 2. What is the normal lead time for product orders?A: Average lead times for prototype / first article are 1-2 weeks, if tooling is involved, lead time for production tooling is 10 days, average production time after sample approval is 2-3 weeks.
    Q 3. What is your standard packing?A: All the goods will be packed by carton box and loaded with pallets. Special packing method can be accepted when needed.
    Q 4. Could you please tell us the month capacity of your products ?A: It depends on which model, we produce more than 2500 tons rubber materials per month.
    Q 5. what kind of certificates you have ?A1: We have been ISO9001:2008 and ISO14001:2004 certified by S G S since 2005.A2: We have various rubber compounds approved by U L, F D A, NSF, KTW, W270, WRAS, ACS, AS4571, EN681, EN549, ROHS and REACH.
    Q6: How to check the quality of the bulk order?A1: We provide preproduction samples before mass production for all customers if needed.A2: We provide quality certs such as measurement report, material data sheet, COO, COA, etc. to all customers before delivery.A3: We accept third party inspection such as S G S, TUV, INTERTEK, BV, etc.
    Q 7: How to select the raw compound for my application?A: With years of experience working with a variety of material, we can help select the material that will best suit your needs while keeping material costs in mind.
    Q 8: Do you use any international standards for the rubber products?A: Yes, we mainly use ASTM D2000 standard to define the quality of the rubber materials, tolerances as per ISO3302, ISO2768, etc.
    Q 9:Can you supply different color materials?A: Yes, we can produce custom molded rubber and silicone rubber products in different colors, the color code will be required in case of an order.
    Q10: What materials are available to produce from your side?A: NBR, EPDM, SILICONE,FKM, NEOPRENE(CR), NR, IIR, SBR, ACM, AEM, Fluorosilicone(FVMQ), FFKM, Liquid Silicone, Sponge, etc.
    Q 11: What other services does Maihua Rubber offer?A: Maihua Rubber has in-house tooling capabilities for molds; we have our own lab for material testing; we have a Cold Room used for elastomer storage to prolong product life.
    Q 12: What is the life expectancy of the rubber seal?A: Product life is contingent upon many factors, including environment, cycles, pressure, etc. Maihua Rubber cannot predict seal life under all the varying conditions of operation. Accellerated life testing may be performed by customer to determine expected life, but must be conducted in dynamic application.
    Q13: Does Maihua Rubber provide maintenance on tooling?A: Maihua Rubber maintains all tooling and will replace as needed.
    Q14: How many empolyees you have?A:We have 325 empolyees at time of December 2016.
    Q15: How many shifts per day in the factory?A: Two shifts per day, 8 hours per shift.

    Designing Injection Molded Parts

    Injection molded parts are designed to work together to form a whole. While the small plastic toys like Legos aren’t typically fabricated for assembly, these products still require precision measurements. For this reason, the designs of injection molded parts should be perfected for manufacturing. The designs should also minimize error potential.

    Design considerations for injection molded parts

    Injection molded parttWhen designing injection molded parts, it’s essential to consider the wall thickness of the part. Ideally, the wall thickness is uniform across the entire part. This allows the entire mold cavity to fill without restriction, and reduces the risk of defects. Parts that don’t have uniform wall thickness will have high stresses at the boundary between two sections, increasing the risk of cracks, warping, and twisting. To avoid such stresses, designers can consider tapering or rounding the edges of the part to eliminate stress concentration.
    The wall thickness of the injection molded part is important because it affects many key characteristics. Therefore, it is critical to take proper care in choosing the wall thickness to avoid costly delays caused by mold problems or mold modification. The nominal wall thickness should be determined based on the function and stress requirements of the part. Similarly, the minimum wall thickness should be calculated based on acceptable stress. Too thin a wall can result in air traps and excessive plastic pressure.
    Injection molded parts that have sharp corners are a common cause of defects. Sharp corners create stress concentrations, poor flow patterns, and increased injection mold wear. To minimize these problems, designers should keep inside corners and outside corners at half the wall thickness. This will help minimize stress and ensure the integrity of the part.
    Another important design consideration for injection molded parts is the thickness of the ribs. They should be at least two-thirds of the outer wall. Thicker ribs may result in sink marks on the outer surface. Undercuts also complicate the mold design and increase the cost of the part.
    Tolerance variation is also an important consideration. It depends on materials, process control, and tool design. Tolerance variation varies from molder to molder, and designers should discuss critical tolerance requirements with molders. If the part has to be manufactured to a particular tolerance, designers should consider options for mold revisions to minimize the tolerance variance. Additionally, designers may need to intentionally design extra clearance. To compensate for such variation, the molder may remove some steel or modify the design. In some cases, interference can be solved by welding.
    Design considerations for injection molded parts should be discussed with material science professionals early in the design process. This is critical because changes to the mold design can be costly. Therefore, achieving the best possible result is critical. By following design guidelines, manufacturers can avoid common defects. A uniform wall thickness is also important because non-uniform thickness can lead to warping the part as it cools.
    Another important factor for injection molded parts is the flowability of the material in the mold cavity. The resin should be able to flow easily around rounded corners. For example, a molded part with a curved undercut will not eject properly from the mold if there’s no space between the two sides. For this reason, designers should consider the flowability of the molded material before deciding on a design.

    Adding a runner system to an injection molding machine

    Injection molded parttThere are two main types of runner systems: hot runner systems and cold runner systems. In a hot runner system, a runner nozzle delivers the molten plastic into the mold cavity. A cold runner system does not require the use of a nozzle and acts as a conduit for the molten plastic.
    The design of a hot runner mold should balance the activity of plastic solution and mold cavities. Ideally, a mold with two cavities is better balanced than one with three. However, it is important to remember that a three-cavity mold requires a manifold balance of human activities.
    Plastic mold runner systems are crucial for ensuring consistent fill rates and pressure. Whether you are producing single or multiple-cavity plastic parts, a runner system will keep your processes consistent. When choosing a runner system, make sure you have the right one for your application.
    Hot runner systems can reduce cycle times by as much as 10 to 30 percent. They help improve quality control and minimize material waste by keeping the plastic molten throughout the molding process. Moreover, they help save on plastic raw materials and energy. These features make them ideal for large production lines.
    A hot runner system can also help prevent overfilling a cavity. Make sure that the volume of the hot runner is equal to the volume of the mold cavity. Otherwise, the plastic solution will be trapped inside the hot runner for too long and decompose.
    Hot runner systems come in many varieties. One type of hot runner system is called the sprue hot runner system. This system uses a mechanical valve to open and close a nozzle. This type of hot runner is more effective and efficient than a general-purpose hot runner. However, it is also more expensive.
    In a three-plate mold, the runner system is positioned between the core and cavity plates. When the mold is opened, the runner system automatically separates from the molded part. This eliminates the need for manual labor, but increases the cost of tooling.
    The runner system is important for producing parts that are both thin and thick. The runner should be narrow but large so as not to create voids and improve the overall performance of the final product. Runner systems are also important for reducing the amount of energy needed to form and regrind the material.
    A hot runner system is one way to improve the speed and accuracy of plastic molding. It helps avoid problems with waste by reducing the amount of plastic wasted. Furthermore, a hot runner system also prevents expensive repairs. By adding a runner system to an injection molding system, you will ensure better quality and precision, and avoid unnecessary downtime and costly repairs.
    Hot runner systems are ideal for high-volume productions. However, they require a higher level of maintenance. In addition, hot runner systems are difficult to clean and often leave waste material. Hidden runners may also be inconvenient to remove, especially when changing materials or colors. They can also lead to sticking issues if they are made from thermally sensitive materials.

    Using a thermally isolated cold injection unit

    Injection molded parttThermostatic control of temperature in an injection molding process can make a significant impact on part quality. High mold temperatures should be regulated by using a temperature-controlled cooling unit. These devices are equipped with pumping systems and internal heaters. The temperature of the injected plastic determines the plastic’s flow characteristics and shrinkage. Temperature also influences the surface finish, dimensional stability, and physical properties of the finished product.
    A thermally isolated cold injection unit allows mold operators to mold parts at lower temperatures than a conventional injection molding machine. The injection mold itself is composed of two steel halves. The two halves are connected by a mechanical hinge. During injection molding, a small amount of plastic is forced into the mold cavity. The injected plastic is then allowed to cool into a solid state. The molded part then falls out of the mold halves. The injected part then enters a bin to be collected.
    The heat/cool injection molding process can improve the aesthetics of molded parts significantly. The effects of this technique are particularly apparent with amorphous resins, which do not form a skin during the injection phase. The molded parts have a higher gloss than with conventional molding techniques.
    This process requires less clamping force than conventional injection molding and offers more design freedom. It also increases process capacity and materials savings. The process control for this process is more complex, with variables such as the amount of melt injection, water pressure, and water injection delay time.
    The angle of repose is another criterion. A low angle indicates that the pellets are free-flowing, while an angle above 45deg indicates that the pellets are not free-flowing. This is important when processing nylon resins.
    Plastic injection molding has made huge advances in recent decades. Today, most injection molds fall into one of two types: hot runner and cold runner. Each has its advantages and disadvantages. Understanding how they differ will help you decide which method is right for you.
    Injection molding is a highly effective manufacturing process that gives manufacturers a competitive edge over their competition. Using this process produces high-quality plastic and metal parts with minimal waste and a low cycle time. The process is also extremely accurate and produces products with the perfect blend of flexibility and strength.
    China best Customized liquid silicone rubber injection molded parts     injection molded plastic auto partsChina best Customized liquid silicone rubber injection molded parts     injection molded plastic auto parts
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