Side release bag buckle plastic parts accessories moulding

In the process of customizing side release bag buckle plastic parts accessories moulding, our factory can provide one-stop service. We have design and production capabilities related to side release bag buckle plastic parts accessories moulding, such as: CAD design, mold manufacturing, injection molding, plastic product production, assembly and other technologies. 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 side release bag buckle plastic parts accessories 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 side release bag buckle plastic parts accessories moulding products, we can make corresponding plastic parts, which is mainly done through injection molds.

Side-opening bag buckles (also known as flip buckles or snap buckles) are a typical precision multi-component functional part. Their injection molding process demands extremely high dimensional accuracy, clearance, wear resistance, and assembly feel.

The following is a detailed process and key points for injection molding side-opening bag buckle plastic accessories.

Full Side-Opening Bag Buckle Injection Molding Process

Side-opening bag buckles typically consist of a cover, base, latch mechanism, and hinge, which are injection molded separately and then assembled.

Phase 1: Component Analysis & Material Selection

Depending on the function of each component, material selection is fundamental.

Top Cover and Base: ABS or PC/ABS alloys are used for aesthetically pleasing, scratch-resistant, and tough surfaces, with good surface treatment (electroplating or spraying), high strength, and excellent overall performance.

Lock Mechanism: POM (polyoxymethylene) is the preferred material for high wear resistance, fatigue resistance, and self-lubrication. It offers excellent wear resistance, a low coefficient of friction, a crisp snap feel, and an extremely long service life. Shaft: resistant to repeated bending and high toughness, PP and POM. PP offers the best fatigue resistance, making it an ideal material for living hinges; POM is more wear-resistant.

Material Pretreatment: Materials like POM and ABS must be thoroughly dried to prevent silver streaks and moisture buildup.

Phase Two: Precision Mold Design & Manufacturing

This is the core technology, as mold accuracy directly determines the fit and lifespan.

Miniaturization and High Precision:

Tiny components like clips and shafts require precision wire-cut machining and mirror-finish EDM, with accuracy requirements of ±0.002mm.

Sliders and Core Pulling Mechanisms:

The clip's undercut design requires a slide to facilitate lateral core pulling. Slide motion accuracy and wear resistance are crucial.

Hot Runner System:

A needle-valve hot runner is recommended to ensure aesthetically pleasing gates, reduce runner waste, and improve automation.

High Polishing/Texturing:

The cavity surface requires a high-gloss polish for a beautiful appearance, or fine etching to conceal scratches.

Exhaust System:

Precision exhaust grooves must be designed to prevent trapped air from causing burning or underfilling, which is crucial for the complete molding of tiny structures.

Cooling System:

Uniform cooling water paths should be designed to ensure dimensional stability and prevent warping.

Stage 3: Injection Molding Process

The goal of process tuning is to ensure dimensional stability and part mechanical properties.

Key Points for Molding POM Clips:

POM has poor thermal stability: Excessive material temperatures and excessive retention times are strictly prohibited, as they will decompose and produce irritating formaldehyde gas, leading to material degradation.

High Mold Temperature: The recommended mold temperature is 80-90°C. High mold temperature improves surface quality, reduces internal stress, and increases the material's crystallinity, resulting in optimal wear resistance and mechanical strength.

Key Points for Molding ABS Covers/Bases:

High mold temperature: Achieve a high-gloss surface and minimize weld marks.

Sufficient holding pressure: Prevent shrinkage and ensure structural strength.

Phase 4: Post-Processing, Assembly & Quality Control

Post-Processing:

De-gating: Precision trimming of the gate.

Automated Assembly:

The cover, base, spring (if any), and clips are press-fitted and assembled using automated equipment such as a vibrating plate and a robotic arm.

Quality Control (Functional Testing is Key):

Dimensional Inspection: Use a 2D image measuring instrument or tool microscope to inspect key dimensions of clips, hinges, and other components to ensure proper clearances.

Feel and Functional Testing (Most Critical):

Opening and Closing Force Test: Use a force gauge to measure the force required for closing and opening to ensure consistent feel and appropriate force.

Life Test (Fatigue Testing): Simulating user operation on specialized equipment, the clips are opened and closed tens of thousands or even hundreds of thousands of times to detect wear, breakage, weakness, or unusual noise. This is the ultimate criterion for verifying the success of the design and material selection.

Listen to the sound: Experienced quality inspectors will judge whether the buckle fits in place and is crisp by the sound of opening and closing.

We are a side release bag buckle plastic parts accessories moulding manufacturer, providing high-quality side release bag buckle plastic parts accessories moulding manufacturing. As long as you want to customize/develop side release bag buckle plastic parts accessories 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

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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.