Custom plastic parts moulding

In addition, our company has established cooperative relationships with plastic raw material suppliers, printing manufacturers, etc. to ensure the supply of raw materials and printing quality. Through our rich experience and perfect supply chain, our company can provide customers with high-quality customized custom plastic parts moulding products to meet their specific needs. At the same time, we have 10 years of professional foreign trade service experience, understand the foreign trade process, and better serve our customers. For custom plastic parts moulding products, we can make corresponding plastic parts, which is mainly done through injection molds.

Customizing plastic parts is far more than just "making parts from a given drawing." It's a systematic process from concept to mass production. A good manufacturer is your partner, not just a supplier.

The following is a comprehensive guide to custom plastic part molding:

I. Core Customization Process: A Six-Step Closed Loop

A successful custom project typically follows these six phases:

Step 1: Requirements Communication and Concept Design

What do you need to provide?

Part Function: What is the part used for? What forces does it need to withstand? Does it require assembly?

Usage Environment: Will it be exposed to high temperatures, chemicals, or UV rays? Indoors or outdoors?

Appearance Requirements: Color, surface texture (glossy, leather grain, etched), logo (concave or convex).

Regulatory Standards: Are there requirements for food grade (FDA), medical grade (ISO 13485), or flame retardancy (UL94)?

The Manufacturer's Role: Based on your needs, we recommend preliminary materials, processes, and feasibility analysis.

Step 2: Design and Engineering Development (Core Step)

Your Responsibility: Provide design input in any form—this could be a concept sketch, prototype, 3D drawing (preferably in STEP/IGS format), or even a physical sample.

Manufacturer's Core Value: Design for Manufacturability Analysis:

DFM Report: The manufacturer should provide a detailed design for manufacturability. This report will identify potential design issues, such as:

Uneven wall thickness: This can lead to shrinkage and deformation.

Insufficient draft angle: This can make demolding difficult and damage the surface.

Sharp corners: This can lead to stress concentrations and cracking.

Rib Design: How can the design ensure strength without sink marks?

Parting Line Location: How does it affect appearance and functionality?

Gate Location: How does it affect appearance and part strength?

Material Selection: Determine the most suitable material based on the final requirements.

Step 3: Mold Design and Manufacturing

Molds are an investment: The core cost and technology of custom parts lies in the mold. Mold prices can range from a few thousand yuan to over a million yuan.

Process: The manufacturer's design team will design the mold (including parting, runners, cooling, ejection, etc.) based on the finalized 3D drawings. CNC precision machining, polishing, assembly, and trial molds will then be performed.

Key Point: Clarify mold ownership and warranty terms with the manufacturer.

Step 4: Mold Trial and Sample Verification

T0-Tn Mold Trial: After the mold is completed, the first trial mold (T0) will be conducted to produce the initial sample.

Sample Evaluation:

Dimensional Inspection: CMMs and other equipment are used to check that key dimensions are within tolerance.

Appearance Inspection: Check for defects such as shrinkage, flash, weld marks, and air marks.

Functional Testing: Fitting and strength testing are performed.

Design Iteration: Depending on sample issues, mold adjustments (revisions) may be required, and multiple rounds of trial molds (T1, T2, etc.) will be conducted until the sample fully meets requirements.

Step 5: Small-Batch Production and Approval

Small-Batch Prototyping: Before mass production, a small-batch trial run is typically conducted to simulate the entire production process.

Submitting PPAP: For demanding industries like automotive and medical, manufacturers are required to submit a Production Part Approval Process (PPAP) package to demonstrate their ability to consistently and stably produce qualified products.

Step 6: Mass Production and Ongoing Support

Mass Production: Start fully automated mass production and conduct rigorous in-process quality control (IPQC).

Delivery and Packaging: Deliver according to agreed schedules and provide appropriate packaging solutions to protect the product.

Ongoing Support: Provide long-term services such as mold maintenance, production capacity guarantees, and annual price reductions.

II. How to Choose an Excellent Customization Partner?

Choosing the right manufacturer is crucial to project success.

Evaluating Technical Capabilities:

Ask them what they can do: Can they perform mold flow analysis? This is a key indicator of their technical depth.

Examine the equipment list: Do they have an injection molding machine suitable for your product's size and precision? Do they have automated equipment such as a robot and centralized feeding system?

Inspecting Inspection Capabilities: Do they have CMMs, 2D CAD machines, colorimeters, etc.? Or do they rely solely on calipers and the naked eye?

Project Communication and Transparency:

DFM Report: Do they proactively provide detailed and professional DFM reports?

Project Manager: Do they have a dedicated Project Manager (PM) for one-on-one communication and timely responses?

Quote Clarity: Does the quote clearly separate the mold cost from the unit price of the product? How is the mold cost allocated?

Industry Experience and Certifications:

Does the company have experience producing products in your industry (e.g., automotive, medical, electronics)? Do they have relevant quality system certifications (e.g., IATF 16949, ISO 13485)?

III. Key Factors Affecting Customization Costs

Part Design: Complexity, size, and weight.

Material: The price difference between general-purpose plastics and specialty engineering plastics is significant.

Mold: Mold size, number of cavities (number of molds per mold), steel quality, and lifespan requirements.

Production Volume: Larger batch sizes result in lower unit costs (as mold costs are allocated and production efficiency is improved).

Tolerance and Surface Requirements: The more stringent the requirements, the higher the mold and production costs.

Checklist

When requesting a custom plastic part, please prepare the following information:

3D Drawings: (.STEP or .IGS formats are preferred)

2D Drawings: (.PDF or .DWG formats, with key dimensions and tolerances indicated)

Material Requirements: For example, PC, ABS, PP, etc., or specify performance requirements for manufacturer recommendations.

Color Requirements: Provide a Pantone color card number or physical color sample.

Surface Finish: For example, glossy, textured, spray-painted, silk-screened, etc.

Expected Production Volume: Initial order quantity, monthly/annual demand estimates.

Industries and Standards: For example, automotive, medical, food contact, flame retardant, etc.

We are a custom plastic parts moulding manufacturer, providing high-quality custom plastic parts moulding manufacturing. As long as you want to customize/develop custom plastic parts moulding products, you can find us. We have professional injection mold design and mature manufacturing technology, providing you with one-stop service, from product design-mold making-product production-product packaging-product transportation, we can help you in every link. As long as you come to us, we will provide you with the ultimate service and satisfy you in terms of product quality, production time, information dialogue, etc.

Plastic Injection Mould making

Plastic molding specifications

Mold design:

Transaction process:

Mold testing:

Product packaging

Factory

We are Custom Plastic Mold factory. Our factory is plastic injection mold maker. we has 17 years of experience in professional custom plastic mold and 10 years of foreign trade experience. We are custom Plastic Mold supplier. We can provide custom Plastic Mold service. Our factory can make the Injection molded plastic parts, and the quality of the products will satisfy you.

We have more than 50 high-end machines and hundreds of engineers and designers. We can provide one-stop service, from product design - mold making - product production - product packaging - transportation. We have a complete production chain. We can meet all your requirements.

Services we provide:

Professional custom mold service, Plastic mold design and manufacturing .plastic product production, product design, mold design, blow mold customization, rotational mold customization, die-casting mold customization. 3D printing services, CNC manufacturing services, product packaging, customized packaging, shipping services.

We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.

FAQ

Q1: Are you trading company or manufacturer ?

A: We are manufacturers.

Q2. When can I get the quotation?

A: We usually quote within 2 days after we get your inquiry.

If you are very urgent, please call us or tell us in your email so that we can quote for you first.

Q3. How long is the lead-time for mold?

A: It all depends on the products' size and complexity. Normally, the lead time is 25 days.

Q4. I have no 3D drawing, how should I start the new project?

A: You can supply us a molding sample, we will help you finish the 3D drawing design.

Q5. Before shipment, how to make sure the products quality?

A: If you don't come to our factory and also don't have the third party for inspection, we will be as your inspection worker.

We will supply you a video for production process detail include process report, products size structure and surface detail, packing detail and so on.

Q6. What is your payment terms?

A: Mold Payment: 40% deposit by T/T in advance, 30% second mold payment before sending out the first trial samples, 30% mold balance after you agree the final samples.

B:Production Payment: 50% deposit in advance, 50% before sending out the final goods.

Q7: How do you make our business long-term and good relationship?

A:1. We keep good quality and competitive price to ensure our customers benefit for best quality products.

2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.