Injection molding of rubber began in the mid 1960s. Rubber injection molding successfully alters the plastics process by heating the rubber and placing it under significantly more pressure per square inch of cavity surface in molding. This is different from the plastic injection molding process where the materials are cooled under less pressure. Through various innovations, injection molding has become one of the most efficient ways to create molded rubber products in many cases.

Advantages of injection molding:

  • Reduced cycle time
  • Flashless tooling
  • Economical process for high volumes of medium to high precision components
  • Capable of producing overmolded components
  • Minimal material waste

Material

Silicone/NR/SBR/NBR/HNBR/XNBR/EPDM/FKM/FFKM/PU/FMVQ/CR.

Tolerance Standard

We can make parts according to your tolerance requirements, if you do not have special requirements on the tolerance,our tolerance is according to the standard of ISO3302:2014 CLASS 2

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Surface Treatment

With compression molding, we can make surface as matte, texture, common polishing, mirror polish, laser engraving, power coating, printing, segmented colors and mixed colors, from below picture, you can find effect of different surface treatment.

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Process Flow Diagram

Once the order is confirmed, our engineer will provide the DFM report (Design for Manufacturability Analysis) to customer for approval. We’ll start to design the mould drawing and mould making after the DFM report approved by customer. Once the mould making is finished, we’ll make several pieces of pre-production samples for test, if the dimensions are correct, then we will send the samples to customers for final confirmation. If the test failed, we will modify the mould or adjust the molding parameter to make new samples, and test it again. Once the samples are approval by customers, we will purchase the raw material and making quality inspection. Then mixing material, molding and trimming, we will make many times of inspection during the production. Finally we will arrange the assembly and packing. After whole order is ready, we will send the packing list to customer to arrange the shipment.
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Quality Control

100% inspection for order,we seriously take care of the quality control from IQC to OQC, throughout each step of the production. Let us show you our quality control:
For raw materials, we’ll do the IQC in time. All materials are procured only from the verified suppliers, who have implemented and maintain certified quality management systems in their plants. With full certificates, such as RoHs, Reach, MSDS, FDA, LFGB, UL, EN549, BPA free, EN71, and so on;
For pre-production samples, we'll provide several pieces to our clients for assembly and function testing. We will seal the samples in time once they're approval.
For Bulk Production, we'll do the IPQCS & PQC (Multiple Sampling Inspection) during production and we'll do the FQC (Sampling Inspection) after deburr or breaking sharp edges. In order to timely find problems, solve problems, reduce defective products, reduce manufacturing costs.
After packing and assembling, we'll do the OQC (Sampling Inspection) to make sure the final goods are qualified.
Below you find find our inspection equipment for your reference.

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