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  • Custom Plastic Injection Mold Gate Types
    Custom Plastic Injection Mold Gate Types

    PTMS as an professional plastic injection mold company in china, we have much experience in plastic injection mold making, always provide high quality custom plastic injection mold to the worldwide customers. The gate is very important for injection mould, we will share some data of injection mold gate types. The two main gate systems are manually trimmed gates and automatically trimmed gates. The following examples show where they are used: Sprue gate: Used for large components, the gate mark is visible in component and no runner is required. e.g.: bucket molding (backside cylindrical gate mark visible and can be felt). Edge gate: Most suitable for square, rectangular components Ring gate: Most suitable for cylindrical components to eliminate weld line defect Diaphragm gate: Most suitable for hollow, cylindrical components Tab gate: Most suitable for solid, thick components Submarine gate: Used when auto de-gating is required to reduce cycle time Reverse taper sprue gate (Pin gate): Generally used in three plate molds. If you need top quality plastic moulds, the plastic injection moulders should design perfect gate for the injection mould, for more details please visit our website ptms-mold.com, we will share more knowledge about injection mold.

  • Some Elements of Custom Plastic Injection Mold
    Some Elements of Custom Plastic Injection Mold

    As a china plastic injection mold company, PTMS have much experience in plastic injection mold making, so we can make high quality custom plastic injection mold as customers’ request, as a plastic injection moulders, we would like to share other elements of plastic injection mold for the worldwide people. The rest injection mold elements as below. Core back plate. It holds the core insert in place and acts as a "stiffener". It is usually made of mild steel. Guide pillar and guide bush. The guide pillar and guide bush align the fixed and moving halves of a mold in each cycle. The material cases are usually made of medium carbon steel and will have higher hardness. Ejector guide pillar and guide bush. These components ensure the alignment of the ejector assembly so that the ejector pins are not damaged. They are usually made of CHMCS. The guide pillar typically has higher hardness than the guide bush. Ejector plate. This holds the ejector pins and is usually made of mild steel. Ejector back plate. It prevents the ejector pins from disengaging; usually of mild steel material. Heel blocks. Provides a gap for the ejector assembly, so that the finished component ejects from the core. Usually made of mild steel. Bottom plate. Clamps the bottom half of the mold with the fixed half of the molding machine; usually made of mild steel. Centering bush. Provides alignment between the bottom plate and the core back plate; usually made of CHMCS. Rest button. Supports the ejection assembly and reduces the area of contact between the ejection assembly and the bottom plate. It is most helpful when cleaning the injection molding machine, which is essential to ensure an "unmarked" finished component. Small foreign particles sticking to the bottom plate may cause ejection pins to project out from the core and result in ejection pin marks on the component. If you want to know more details of injection mold, please visit our website ptms-mold.com, we will share more and more useful data of injection mold for you!

  • Plastic Injection Mold Elements
    Plastic Injection Mold Elements

    Plastic injection mold industry is very important for our life, but most people do not know the injection mold elements, so we will share some elements of plastic injection mold for the worldwide people.   The plastic injection mold is made of: Register ring: Aligns injection molding machine screws with the injection mold. Usually made of case-hardened, medium carbon steel material (CHMCS). Sprue bush: The bush has a taper hole of 3°to 5°and is usually made of CHMCS. The material enters the mold through the sprue bush. Top plate: It is used to clamp the top half of the mold to the moving half of the molding machine and is usually made of mild steel. Cavity plate: The plate used to create a cavity (via a gap) that will be filled with the plastic material and form the plastic component. Usually made of mild steel. Core plate: The core plate projects into the cavity place and creates hollow portions in the plastic component. This core plate is usually made of hardened hot die P20 steel without hardening after core machining. Sprue puller bush: The sprue puller bush is used to accommodate the sprue puller pin; usually made of CHMCS. Sprue puller pin: The sprue puller pin pulls the sprue from the sprue bush. It is usually made of CHMCS   Above is just some elements of injection mold, as a plastic injection mold company in china, PTMS would like to make high quality custom plastic injection mold to the customers, for more details please visit our website ptms-mold.com. 

  • Plastic Injection Mould Design Consideration
    Plastic Injection Mould Design Consideration

    Plastic parts is widely used in many industries, so plastic injection mold is very important for plastic parts production, how to design perfect injection mold? In the fact, there are many design considerations in injection mold designing, so we will share some details as below.   Draft: Required in both the core and cavity for easy ejection of the finished component Shrinkage allowance: Depends on shrinkage property of material core and cavity size Cooling circuit: In order to reduce the cycle time, water circulates through holes drilled in both the core and cavity plates. Ejection gap: The gap between the ejector plate face and core back plate face should hold dimension within the core. It must allow component to be fully removed from the mold. Air vents: Removes gases entrapped between core and cavity (usually less than 0.05 mm gap), because excessive gaps can result in flash defects. Mold polishing: The core, cavity, runner and sprue should have good surface finish and should be polished along material flow direction. Mold filling: The gate should be placed such that the component is filled from the thicker section to thinner section.   PTMS as one of china plastic injection moulders, we have much experience in custom plastic injection mold making and injection molding, also can design perfect injection mold for the customers, if you need high quality plastic moulds, please contact us, for more details visit our website ptms-mold.com, project RFQ to sales@ptms-mold.com. We will make better injection mold solution for you!

Quality
PTMS always provide customers high quality, reasonable price plastic injection mold and injection molding parts. We also improve ourselves each day and want to be one of the famous injection mold maker in the world. We would like to help more and more companies with injection mold and precision molding parts.

Responsible

Every people from president to common employee are very responsible for their jobs, our company has strict check-up system for each people, so oversea salesmen try their best to develop business, project team are conscientious for mold design, mold making team are conscientious to make mold. PTMS team is very responsible for injection mold making and precision molding parts production.

Working skills

We train every people skill and ask them to make quality as the first important job, every people would like to care their jobs quality, below are the procedure for customers’ reference:

1. Mold Design

Mold Designer will check customers’ 2D/3D drawings and other related data carefully, also they will communicate with customers for drawings, project engineer also give customers’ valuable suggestions on part design and mold making based on the data, because some customers are not familiar with mold design. So we would provide them excellent solution to save lots cost on mold making and molding parts production.

2. Mold Making

We just choose good partner to work, such as LKM mold base, MoldMaster, Gunther and ect, so we can control the quality effectively. We would check related important dimensions of mold base, cavity, core, inserts, lifter, electrodes. The EDM technician will check every electrodes before EDM processing, the mold maker technician would check all the mold components follow parts drawing before mold testing, before mold shipment, our QC, Mold Designer, Project Engineer and Mold Maker have a meeting, they would check all the mold components approval, care about mold appearance and put mold spec, user manual into package box, we make FAL report with customers' drawing dimension and care about the appearance of metal parts before shipment, QC would check and put FAL report into package box. After the all jobs, the tooling will be shipped to our customers.

3. Injection Molding

Our QC and Project Engineer will check related dimensions which customer approval and plastic part’s appearance, then make instruction documents with signature approval samples for mass production. Every injection molding operator would follow that to do mass production. Before package, QC would spot-check 5-10 pcs samples of each boxes, and before shipment QC would care about the package appearance, then ship to customers.

Guarantee

We always provide customer high quality injection mold and molding parts as their requirements, but sometimes just a little fault will appear when mold design, mold making, injection molding, shipping and etc because of something, but the defective rate is just 0.01%, below are some conditions for your reference:

1. Mold Design

We will design new mold free of charge if the fault is made by us, but we can also re-design it free of charge if a small fault by customers sometimes, design fee will be collected if big fault by customers.

2. Mold Making

We will modify the mold free of charge if fault by us, but we can also modify it free of charge if small fault by customers, modified fee will be collected if big fault by customers. But in the fact, PTMS invest much money on mold modification, even invest much money on new mold making, just want to provide high quality mold to customer, also high quality molding parts, we don't care money loss, just for long time business partner and give value to customers.

3. Injection Molding

We will produce new injection molding parts free of charge if fault by us, but we can also produce small qty if small fault by customers, new injection molding parts production fee will be collected if big fault by customers. Beside we just choose good plastic resin suppliers to work, make sure high quality materials.

But PTMS always reduce the fault and we have a solution for high quality injection molding parts. We will provide new part which reaches the standard 100% free of charge, but customers have to give us the inspection instruction document. Normally in our production procedure customer needs approval the samples and signature on it, send to us for quality control spec, than we will do the mass production accordingly.

CertificationSira Certification

PTMS is an ISO9001-2008 system certificated manufacturer, so we have very strict Quality Control on mold and molding. We always see the Quality is the life line and development base of the company, so we can provide customized inspection services to meet each customer specific requirements, with the capacity to measure both injection mold components and final plastic parts in depth.

Inspection equipments

All components of injection mold and molded precision plastic parts are fully-qualified by our good inspection equipment and QC system.

Inspection Equipments as below:
CMM
CMM 800*600 USA 1set
Projector China 1set
2DMI China 1set
Micro Glass 10times and 15times China 2sets
Height Altimeter Mitutoyo Japan 2sets
Block gauge Mitutoyo Japan 1set
Pin Guage Mitutoyo Japan 1set
L-Square Mitutoyo Japan 5sets
Callipers Mitutoyo 0-150/0-200/0-300 Japan 20sets
Micrometer Mitutoyo 0-50/0-100 Japan 10sets
Salt Spray China 1set for Laboratory
Drying Box China 1setCPP
Hardness China 1set

Quality system report as below:

FAI Report-First Article Inspection Report for Molded Plastic Samples
SPC Report-Steady production control For Injection Molding Production
CPK Report for Injection Molding Production
CMK Report for Injection Molding Production
SGS Report for plastic parts
RoHS Report for plastic parts

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