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

The core technical points and cost control strategies of cheap plastic injection molding (updated in 2025) are summarized into five key modules based on material characteristics, process optimization and industry cutting-edge practices:

1. Material selection and cost control

Low-cost substrate formula

Control of recycled material ratio: PP/PE recycled material blending ≤30% (needs to pass through melt filtration system, impurity particle size <0.1mm), new material uses homopolymer PP (melt index MFI 20-40g/10min).

Filling modification to reduce costs: Calcium carbonate (CaCO₃) filling 40%-50% (particle size 2-5μm), reducing costs by 15-20%, and impact strength needs to be >5kJ/m².

Cost trap: Recycled material >50% will lead to a 40% decrease in tensile strength and a surge in product failure risk.

Simplify the pretreatment process

Cancel raw material pre-drying (only for materials with moisture absorption rate <0.02% such as HDPE), and use a dehumidification device in the hopper (dew point ≤-30℃).

2. Mold design streamlining strategy

Mold type selection and optimization

Two-plate mold, simple structure for daily necessities, cancel the slider mechanism (tilt angle ≤3°)

Simplified hot runner, multi-cavity production, open hot nozzle (needle valve system free)

Combined mold core, multi-variety switching, mold core standardization (size serialization)

Key design:

Gating system optimization: straight gate + fan gate (wall thickness > 3mm products), gate thickness = 60% of product wall thickness.

Simplified cooling water channel: use straight drilling water channel (spacing ≥ 3 times the aperture), mold temperature fluctuation tolerance ±10℃

3. Extreme compression of process parameters

Melt temperature: 180-220℃, PE>230℃ yellowing, PP>250℃ degradation

Injection speed, medium and low speed segmented control, high speed leads to flash (>80mm/s)

Pressing pressure, 30-50MPa, insufficient pressure causes shrinkage depression

Cooling time, 10-25s (according to wall thickness), every 1s shortened, the production capacity ↑4%, but the deformation risk ↑

Clamping force, theoretical value × 0.8, the threshold of flash generation needs to be monitored

Cost reduction process technology:

In-mold cutting gate: eliminating post-processing process (applicable to products with gate thickness <0.8mm).

Multi-cavity asynchronous injection molding: production of different product combinations (such as lid + bottle body), equipment utilization ↑30%.

4. Defect prevention and control and economic balance

Solutions for high-incidence defects

Shrinkage: through pressure compensation (pressure curve slow drop) + improve cooling efficiency (water temperature ≤15℃).

Flash: Reduce the injection speed peak + fine-tune the clamping force (reserve 5 tons of margin for every 100 tons of clamping force).

Tolerable defect standards (refer to ISO 20471 industrial products)

Non-exterior surfaces allow ≤0.3mm shrinkage marks and <0.1mm flash (manual trimming cost <0.01 yuan/piece).

Key dimension tolerance is relaxed to ±0.3mm (3 times that of precision injection molding).

V. Intelligent cost reduction technology (applied in 2025)

AI dynamic parameter adjustment

Through real-time pressure sensor + machine learning, material fluctuations (changes in the proportion of recycled materials) are automatically compensated, and the scrap rate is ↓40%.

Blockchain raw material traceability

Record the source and batch performance of recycled materials, and the risk of inferior materials mixing is ↓90% (cost increase <0.5%).

Distributed manufacturing

Shared cloud factory model: small batch order production, mold cost sharing ↓70%.

The ultimate rule: The essence of cheap plastic injection molding is to achieve extreme cost compression at the edge of the critical point of failure. The principle of "three controls and one optimization" must be followed:

Control the proportion of recycled materials (≤30%)

Control the lower limit of cooling time (wall thickness × 1.2s/mm)

Control the clamping force margin (≥5%)

Optimal equipment selection (servo hydraulic press > full motor, 35% higher cost performance).

cheap plastic injection moulding

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