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  • The Stages of Injection Molding
    The Stages of Injection Molding

    Injection molding parts are widely used in many industries, but how to produce such plastic parts? Many people like plastic products but they do not know how it is produced, so now we will share the production knowledge - the stages of injection molding to the worldwide people. If you need high quality injection molding, firstly we should make high quality injection mold, also called injection tooling or injection mould, besides, we need the right injection molding machines to produce the injection molding parts, so all is clear, the stages of injection molding include: 1. Granulated or powdered thermoplastic plastic is fed from a hopper into the Injection Moulding machine. 2. The Injection Moulding machine consists of a hollow steel barrel, containing a rotating screw (Archemidial Screw). The screw carries the plastic along the barrel to the mould. Heaters surround the barrel melt the plastic as it travels along the barrel. 3. The screw is forced back as the melted plastic collects at the end of the barrel. Once enough plastic has collected a hydraulic ram pushes the screw forward injecting the plastic through a sprue into a mould cavity.  The mould is warmed before injecting and the plastic is injected quickly to prevent it from hardening before the mould is full. 4. Pressure is maintained for a short time (dwell time) to prevent the material creeping back during setting (hardening). This prevents shrinkage and hollows, therefore giving a better quality product. The moulding is left to cool before removing (ejected) from the mould. The moulding takes on the shape of the mould cavity. You will know how to produce injection molding if you read the blog, PTMS would like to learn and share more and more data of injection molding with people who like injection molding, if you need our service, please send us RFQ or send e-mail to sales@ptms-mold.com. 

  • Injection Molding Process
    Injection Molding Process

    Plastic injection molding parts is widely used in Automotive, Home Appliance, Medical, Printer, Plastic Tooling,Defense and Electronics industries. PTMS as a professional injection molding manufacturer, we would like to share injection molding process to people who are interested in injection molding. The details of injection molding process include: 1. close mould - the moving and fixed platens of the injection moulding machine hold the mould tool together under pressure. 2. injection - the molten plastic that has been melted from pellet form in the barrel of the moulding machine is injected under pressure into the mould. 3. cooling - the plastic parts are then allowed to solidify in the mould. 4. opening - the moving platen moves away from the fixed platen separating the mould tool. In the fact, the injection molding process is very interesting, the injection machines are very important for production, our company has 20 sets advanced auto injection machines for mass production. If you like to know knowledge about injection molding, welcome to send us RFQ to sales@ptms-mold.com.

  • Many Customers Like to Work with PTMS
    Many Customers Like to Work with PTMS

    As a professional injection mold manufacturer, PTMS always provide customers high quality injection tooling and injection molding with reasonable price, also perfect service all the time. So 99% of the customers like to work with us, they also would like to introduce other friends to cooperate with us. One of our customers introduced a good business partner to us this week, this new company like our high quality and perfect service for injection tooling, so they were happy to work with us, they will send us the samples for check and ask us to make injection tooling this month. Our project team will make design for the project, we can provide full service for this, such as design, mold making, injection molding, assembly. If you have injection molding project, welcome to send us RFQ, we will study it and give you valuable solution, our business email is sales@ptms-mold.com.

  • High Quality Plastic Injection Mold Making
    High Quality Plastic Injection Mold Making

    PTMS is a professional high quality custom plastic injection mold and precision injection molding parts manufacturer in China . As an ISO9001-2008 certified plastic injection molder, we offer an one-step service include excellent engineering, mold making, close-tolerance injection molding, tooling manufacturing, precision machining and prototype for product pre-check services for a complete custom manufacturing experience. PTMS work with a variety of injection mold configurations and a summary of available options can be found here, Mold Types as below: Prototypes Injection Mold       Multi-Cavity Injection Mold         Family Injection Mold Unscrewing Injection Mold     Over-molding Injection Mold      Hot Runner Injection Mold Die-Casting Mold          Silicone Compression Mold        Thermoset Compression Mold In business since 2002 , we offer valuable solution from plastic injection mold design to injection molding parts assembly and our products are widely used in Automotive , Home Appliance , Medical , Printer , Plastic Tooling , Defense and Electronics industries , some of our customers are from Toshiba , TDI-Arms , BMW , etc. Our company always provides high quality products with reasonable price and perfect service to the worldwide customers. So if you need high quality injection molds and injection parts, please feel free to contact us by sales@ptms-mold.com.

Injection Molding
PTMS always provide high quality custom precision plastic injection molding parts since 2002. We have 35 Japan and China advanced plastic injection molding machines, also experienced injection molding team work in our company and they know how to control cost and make high quality injection molding parts to customers.

Machines

50-130Ton Japan Injection MachinesWe have 2 injection molding workshops now, the first workshop running 15 sets precision molding machines which include 8 sets Toyo Molding machines, 2 sets Toshiba Molding Machines, 2 sets Nissei Molding Machines, 2 sets Double Injection Machines, 2 sets Sumitomo Molding Machines, 1 set Mitsubishi Molding Machine. The second workshop running 20sets injection molding machines which had installed robot for plastic parts and injection runner fall down automatically, it produce custom injection molding, over-molding and silicone compression molding, also make outstanding precision, high quality, fastest dry cycle times in the industry. Besides, we can also produce insert molding and two shot molding. Plastic injection molding parts are used for Home Appliance, Medical, Weapon accessories, Printer accessories, Automobile parts, Connector parts and etc.

Materials

Plastic ResinPTMS injection molding machines can run all types of resins from commodity to engineered grades, high temperature to filled materials, we only work with high quality plastic resin suppliers in the industry and confuse normal bad plastic resin so our plastic resin we used is 100% qualified, the plastic resin as below:

Common Resin: ABS, PC, PC+ABS, SAN, HIPS, GPPS, HDPE, LDPE, PP, PE
Engineering Resin: PP+GF, PPO, PPS, POM, POM+GF, PBT, PBT+GF, Nylon, Nylon+GF
Soft Resin: PVC, TPE, TPR, TPU, Silicone
Over-molding Resin: ABS-TPE, TPR, PC-TPE, TPR PC+ABS-TPE Nylon-TPE,TPR

We also request the suppliers to provide us certifications which include ISO, ROHS, and others. We can show them to customers for check. All the materials we use are 100% brand new because high quality product is our company’s life.

Molding

Auto Injection MachineWe improve our production equipment into auto injection molding machines in 2015, 20sets injection molding machine had installed robot for plastic parts and injection runner fall down automatically.So the parts are removed from the injection mold by robotics or conveyor systems, it makes reliable, efficient and cost effective to injection molding parts production. If you want to know plastic injection molding parts gallery please check our product gallery site. We can also make second operation for molding parts, such as printing, painting and plating as customer's needs.

Summary

We have advanced plastic injection molding machines and many years experience team in injection molding industry and 8 QC technicians for each shift. We also send customers the first samples for check, QC inspect the samples by inspection equipments like as CMM, Projector, 2DMI, Micro Glass, Height Altimeter, Block Gauge, Pin Gauge, L-Square, Callipers, Micrometer, hardness and etc. We send quality report to customers for check, such as FAI, SPC, CPK and etc. All the jobs we make are just for high quality plastic injection molding parts.

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