Electric scooter 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 electric scooter 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 electric scooter plastic parts moulding products, we can make corresponding plastic parts, which is mainly done through injection molds.

Electric scooters serve as short-distance commuting vehicles, with over 60% of their components manufactured via injection molding using engineering plastics. These components fall into three main categories: exterior housings (headlight covers, deck shrouds, rear fenders, instrument housings), structural load-bearing parts (deck support mounts, folding latches, battery compartment casings, handlebar brackets), and functional small parts (brake levers, wiring harness clips, shock absorber decorative caps, charging port covers). Unlike plastic parts for ordinary consumer goods, scooter components must withstand prolonged outdoor exposure to sunlight and rain, riding vibrations, and load-bearing impacts. Certain load-bearing parts must also meet specific requirements for drop resistance, low-temperature durability, and aging resistance. Consequently, the entire injection molding workflow—from raw material selection, mold design, and mold trials to mass production, post-processing, and quality control—adheres to rigorous process standards that differ significantly from conventional injection molding. This article provides a comprehensive breakdown of the entire injection molding process for electric scooter plastic parts, from raw material intake to finished product dispatch. It covers seven core stages: preliminary preparation, mold tooling, injection molding machinery, molding processes, post-processing, quality inspection, and warehousing. Spanning over 2,000 words, it serves as a reference for professionals in factory production, mold development, and process engineering.

I. Pre-production Stage: Raw Material Selection and Pre-treatment (Foundational Molding Steps)

Electric scooter plastic parts are categorized into general-purpose modified plastics and high-strength engineering plastics based on their usage scenarios. Raw material quality directly determines molding stability and product service life. This stage constitutes the initial phase of injection molding and comprises three key steps: raw material selection, blending/mixing, and drying/dehumidification.

1. Classification and Selection Criteria for Plastic Raw Materials

1) Aesthetic/Decorative Parts (Instrument housings, body decorative covers, handlebar housings): ABS and ABS+PC alloys are the mainstream choices. ABS offers good flowability, high surface gloss, and ease of painting or electroplating, along with good low-temperature toughness, making it suitable for exposed exterior parts. ABS+PC alloys offer enhanced heat and impact resistance, resisting cracking or deformation under intense sun exposure, and are frequently used for instrument housings on high-end scooters. 2) Load-bearing structural components (battery compartment, folding base, footboard bracket, locking mechanism): Materials selected include modified PP, PA6 + 30% glass fiber, and PC/ABS with toughening agents. Glass fiber-reinforced nylon offers high rigidity, wear resistance, and excellent load-bearing capacity; the folding lock mechanism can withstand tens of thousands of opening/closing cycles without fracturing. Modified PP is cost-effective and impact-resistant; it is used for large battery casings to reduce the vehicle's overall weight.

3) Small outdoor waterproof components (charging port cover, wiring harness sheath, mudguard): Materials selected include weather-resistant PP, TPU, and ASA. ASA offers superior UV resistance compared to ABS—resisting yellowing and embrittlement during long-term outdoor use—making it the preferred weather-resistant material for mudguards and body casings. TPU offers good elasticity, ensuring the charging port cover withstands repeated bending without breaking while maintaining a watertight seal.

All incoming raw materials must be accompanied by a material specification report, a RoHS compliance report, and a melt flow index (MI) test report. The factory's quality control department verifies the material grade before warehousing to prevent contamination by recycled scrap, which could cause molding defects or substandard strength.

2. Raw material proportioning and mixing process

Multi-component modified materials, masterbatches, UV stabilizers, mold release agents, and flame retardants must be thoroughly pre-mixed using a vertical mixer. Taking black ASA mudguard material as an example: the mixture consists of 98% base ASA pellets, 2% black high-gloss masterbatch, and 0.3% UV-resistant masterbatch. After loading, the mixture is blended at low speed (300 rpm) for 8–12 minutes; low-speed operation prevents heat buildup from friction, which could cause the pellets to melt and clump prematurely.

High-speed, prolonged mixing is prohibited for glass fiber-reinforced nylon materials to avoid breaking the glass fibers and compromising product rigidity. A distinction is made between virgin material and regrind (sprue/runner scrap) ratios: the addition of regrind is capped at 15% for aesthetic scooter parts, while structural load-bearing components must be molded exclusively from virgin material to prevent significant degradation of impact strength. Once mixed, the material is stored in sealed containers labeled with the material name, mixing ratio, mixing duration, and production date to prevent mix-ups or errors. 3. Dehumidification and Drying Process (A critical step to prevent bubbles, silver streaks, and flow marks)

Engineering plastics readily absorb atmospheric moisture. If moisture-laden raw materials undergo high-temperature injection molding, the moisture vaporizes, causing defects such as silver streaks, bubbles, brittle weld lines, and internal voids that render the product scrap. Scooter plastic components—particularly those made of nylon, PC, and ABS/PC alloys—require mandatory drying.

Drying parameters vary strictly by material:

ABS/ASA: Dry at 80°C for 4 hours using a hopper-based hot-air circulation dryer;

PC/ABS alloy: Dry at 90°C for 6 hours;

PA6+30GF: Dry at 110°C for 4 hours using a dehumidifying dryer. Nylon is highly hygroscopic; standard hot-air drying is insufficient, so a dehumidifying dryer is mandatory;

Modified PP: Very low water absorption; drying for 1 hour suffices, with no requirement for active dehumidification.

Drying equipment ranges from hopper dryers to large, sealed dehumidifying dryers. For mass production, a central dehumidifying material-feeding system is used; raw materials are automatically conveyed via pipelines to the injection molding machine's hopper, remaining isolated from the air throughout the process to prevent moisture re-absorption. After drying, samples are tested for moisture content; levels for PC and nylon must be kept below 0.02% before the material is loaded into the injection molding machine.

We are a electric scooter plastic parts moulding manufacturer, providing high-quality electric scooter plastic parts moulding manufacturing. As long as you want to customize/develop electric scooter 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.

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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.