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  Tel:  +86 0769-82381785 
  Fax: +86 0769-82381865
  Contact Person:
  Colin Wang

  ISO 9001:2008 Certified


  Home >> FAQ >>

1. What is injection mold and injection molding?

In injection molding, a mold is a set of metal device composing usually of a "mold base" and one or more "cavities". A carefully engineered mold base anchor and house the more delicate cavities safely to ensure the production efficiency and product quality. The cavities are outlined to the exact specifications of the needed product, and in which the molten plastic is forced and hardens. The cavities are situated in the mold base. Since molds have been expensive to manufacture, they were usually only used in mass production where thousands of parts were being produced.
Injection molding is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold cavity where it cools and hardens to the configuration of the mold cavity. The mold then opens and the newly formed part is removed and inspected, ready for shipment or secondary manufacturing operations. Injection molding is the most popular form of molding and widely used for manufacturing a variety of parts, from the smallest component to entire body panels of cars.

2. What types of materials we choose to produce?

We are capable of manufacturing all customized products with various of plastic materials applicable in molding .And usually, we will take both customers’ requirements and general criteria such as, product properties, operation environment, product life and so on into consideration before taking into manufacturing. Here we list all the materials below. Click the link for more details about each material.

ABS (Acrylonitrile Butadiene Styrene)        AES (Acrylonitrile Ethylene Styrene)
AS (Acrylonitrile Styrene)                          ASA (Acrylonitrile Styrene Acrylate)
PA (Polyamide)
                                        PC (Polycarbonate)
PE (Polyethylene)
                                     PPS (Polyphenylene Sulfide)
PP (Polypropylene)                                   PS (Polystyrene)
PSU (Polysulfone)                                     PUR (Polyurethane)
PVC (Polyvinyl Chloride)                            SAN (Styrene Acrylonitrile)
SAS (Styrene Acrylonitrile Silicone)            TPE (Thermoplastic Elastomer)
TPU (Thermoplastic Polyurethane)              POM (Acetal)
PMMA (Acrylic)

3. What steel materials we have used ?

The type of mold steel we often choose will vary according to plastic parts materials and life if our customers have no specific requirements on steel specifications or its origin place. Usually, LongJi is our primary supplier of metal steel and please click on as you please. Certainly we will use mold steel conforming with our customers’ requirements if any. In addition, we are capable of purchasing a variety of mold steel originated from different countries, click the following links, and you may check the performance of steel and steel products.

4.what standards we follow to manufacture mold and what standard parts we use at present? 

Generally speaking, we are manufacturing and designing in light of international standard. Since our sales range covers the whole global, we introduce different mold standards to meet all customers’ requirements .And our mold standard parts including DME; HASCO; LKM; MISUMI; PANCH; RABOURDIN; AGATHON etc. 




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