Custom plastic part fabrication 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 part fabrication 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 part fabrication moulding products, we can make corresponding plastic parts, which is mainly done through injection molds.

Phase 1: Requirements Analysis and Design - The Cornerstone of Success

This is the project definition phase, aiming to "do things right the first time."

In-depth Requirements Communication:

Functional Requirements: Component operating environment, load capacity, temperature range, chemical resistance, flame retardancy rating (e.g., UL94), expected lifespan.

Appearance Requirements: Surface finish (high gloss, matte, textured, sprayed), color (provide Pantone color code), aesthetic standards (e.g., Grade A surface finish).

Precision and Regulations: Dimensional tolerances (comply with GD&T standards), assembly interfaces, industry certifications (e.g., FDA food contact, ISO 13485 medical, UL certification).

Budget and Timeline: Target cost, project timeline, expected output.

Product Design Optimization and DFM (Design for Manufacturability Analysis):

Core Value: Close collaboration between the manufacturer and the client's design team.

Analysis Content:

Wall Thickness Analysis: Ensure uniform wall thickness (typical range 2-3mm) to avoid shrinkage and warping.

Draft Angle: Ensures smooth demolding of parts (typically ≥1°).

Reinforcing Ribs and Screw Studs: Properly designed (rib thickness ≤ 60% of main body wall thickness) to prevent back shrinkage.

Rounded Corner Transitions: Avoid stress concentration and improve plastic flow.

Parting Line Determination: Select the location with minimal impact on appearance and function.

Gate Location and Type: Evaluate the optimal gate location, balance filling, and reduce weld lines.

Output: Professional DFM report providing detailed optimization suggestions and confirmation with the client.

Material Selection Recommendations:

Recommend the most suitable resin based on product requirements, for example:

ABS: General purpose, high strength, easy to paint.

PC: High strength, heat resistant, transparent.

PP: Chemical resistant, good toughness, low cost.

PA (Nylon): Abrasion resistant, high strength.

POM: High rigidity, low friction.

Confirm material suppliers and grades, and provide material certification data.

Phase Two: Mold Design and Manufacturing - The Birth of Precision Tools

The mold is the "mother body" of the product, and its quality directly determines the quality of the parts.

Mold Design:

Mold Flow Analysis: A standard feature of modern precision injection molding. Using CAE software to simulate the filling, cooling, shrinkage, and warpage of plastic in the mold, it predicts and resolves issues such as air pockets, weld lines, and shrinkage in advance, optimizing the gating and cooling systems and significantly reducing trial molding costs and risks.

Structural Design: Designing the mold base, cavities/cores, slides/elevators (for handling undercuts), cooling water channels, venting systems, etc.

Precision Machining and Assembly:

Machining Processes: Using CNC (Computer Numerical Control), EDM (Electrical Discharge Machining), wire cutting, and other processes to machine mold cores and inserts.

Surface Treatment: Applying specific treatments to the cavities, such as mirror polishing (for transparent parts) and VDI texturing (e.g., leather texture).

Mold Assembly (Fitting): All parts are precisely assembled and adjusted by a senior fitter to ensure smooth and error-free movement of components.

Phase 3: Mold Trial and Process Optimization - Verification and Fine-tuning

This is the crucial bridge connecting mold making and mass production.

Initial Mold Trial (T0): Install the mold on the injection molding machine, perform initial adjustments using production materials, and produce the first batch of samples.

Sample Evaluation and Adjustment:

Dimensional Measurement: Use a coordinate measuring machine (CMM) and a 2D image analyzer to check key dimensions.

Appearance Inspection: Inspect for defects such as missing material, flash, shrinkage, and air bubbles.

Functional Testing: Conduct assembly, strength, and other related tests.

Process Optimization: Based on sample issues, systematically adjust parameters such as injection speed, pressure, and temperature (often using Design of Experiments (DOE)).

Engineering Verification (EVT) and Sample Approval: Submit the improved sample to the customer for engineering verification and obtain sample approval.

Process Parameter Locking: Record the final optimized parameters in the injection molding process condition table as the mass production standard.

Phase 4: Mass Production and Process Control - Ensuring Stability

Ensure that every molded product meets the standards.

Molding Cycle: Mold Closure → Injection → Holding Pressure → Cooling → Mold Opening → Ejection → Part Removal (automatically completed by a robotic arm).

Statistical Process Control (SPC):

Critical Process Parameter Monitoring: Real-time monitoring and recording of injection time, peak pressure, material temperature, etc.

First Article Inspection (FAI): A comprehensive inspection of the first product at the start of each shift or after mold change.

Periodic Sampling Inspection: Regular inspection of product appearance and critical dimensions.

Quality Control Chart: Monitoring the stability of critical dimensions to achieve predictive control.

Fifth Stage: Quality Assurance and Delivery - The Final Checkpoint

Final Inspection and Packaging:

100% visual inspection or AOI (Automated Optical Inspection).

Protective Packaging: Use PE bags, bubble wrap, custom blister packs, etc., to prevent scratches.

Outgoing Quality Control (OQC): Inspecting batches to be shipped according to AQL sampling standards.

Document Delivery: Necessary documents will be provided with the shipment, such as the shipment inspection report, Certificate of Conformity (COC), and Full Dimension Inspection Report (FAI Report).

Mold Maintenance and Care: Regular maintenance, rust prevention, and replacement of vulnerable parts will be performed on the molds to ensure their long-term stable operation.

We are a custom plastic part fabrication moulding manufacturer, providing high-quality custom plastic part fabrication moulding manufacturing. As long as you want to customize/develop custom plastic part fabrication 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.