Plastic Injection Heat Sink Moulding

Plastic Injection Heat Sink Moulding is a manufacturing technology that injects molten plastic into a dedicated mold through an injection molding process, and after cooling, produces plastic components with heat dissipation functions.

Combining the advantages of plastic's light weight and low cost with heat dissipation structure design, this technology is widely used in electronic equipment, automotive electronics and other fields to solve the problem of heat accumulation in components.

P&M Plastic Injection Heat Sink Moulding Introduction

Mold Design & Manufacturing

Design the mold cavity according to the heat sink structure (such as fin density, thickness, heat dissipation channel), and use high-precision processing (such as CNC milling, EDM electrical discharge machining) to ensure mold accuracy, with tolerances usually controlled within ±0.02mm.

Raw Material Preparation

Modified plastics with thermally conductive fillers (such as graphite, aluminum powder, ceramic particles) are selected. Common substrates include PP, PA66, PPS, etc. The thermal conductivity can be increased to 10-50 W/(m·K), while ensuring the material's high temperature resistance (usually requiring long-term temperature resistance ≥120℃).

Injection Molding

Inject molten plastic into the mold cavity at high pressure (50-150MPa) and high speed (50-200mm/s), compensate for plastic shrinkage through the pressure-holding stage (holding pressure is usually 60%-80% of injection pressure), and then cool and shape (cooling time accounts for 40%-60% of the total cycle).

Post-Processing

It includes demolding, deburring (achievable by frozen trimming or laser cutting), surface treatment (such as spraying thermally conductive coating, vacuum coating), and some products need to be assembled (such as bonding with metal heat dissipation bases).

P&M Plastic Injection Heat Sink Moulding(Specification)

P&M Plastic Injection Heat Sink Moulding Feature And Application

一、Technical Advantages & Application Scenarios

1. Technical Advantages

Lightweight：The weight of plastic heat sinks is 30%-60% lighter than that of metal heat sinks of the same volume, suitable for portable electronic devices (such as laptops, drones).

Design Flexibility：It can form complex structures (such as special-shaped fins, built-in heat dissipation channels) in one step without subsequent welding or splicing.

Cost Advantage：The mold has a long service life (up to 1 million cycles or more), high mass production efficiency, and the unit product cost is 20%-40% lower than metal processing.

2. Application Scenarios

Consumer Electronics：

Heat dissipation modules for routers, set-top boxes, and LED lamps.

Automotive Electronics：

Heat dissipation components for in-vehicle navigation, ADAS systems, and battery management systems (BMS).

Industrial Equipment：

Heat dissipation structures for frequency converters, sensors, and charging piles.

二、Quality Control Points

Heat Dissipation Performance Testing：

Measure the surface temperature distribution of the heat sink with a thermal imager to ensure that the component temperature does not exceed the safety threshold under rated power (for example, IC chips usually require ≤85℃).

Dimensional Accuracy Testing：

Use a coordinate measuring machine to detect key dimensions (such as fin spacing, height) to ensure compliance with design tolerances.

Appearance Defect Testing：

Use a visual inspection system to check for defects such as material shortage, bubbles, and burrs, with a pass rate of over 99.5%.

Customization Process

Factory&About US

NingBo Plastic Metal Product Co.,Ltd (P&M) is located in Yuyao, the so-called Mould City, Plastic Kingdom, in the southern tip of Hangzhou Bay Bridge,north of Shanghai, the east of Ningbo Port,tight double line of State Road 329 on land, sea and air trafic into a network to facilitate transport.

By the abundant technical strength,scientific management methods and good after-sales service, product deeply trusted and welcomed by customers from all over the world. P&M holds improved system of development and production, to achieve mold design, plastic products manufacturing and automatic production. Our main products is design and manufacturing of plastic mold, plastic product, metal product. 90% products of our enterprise are exported to America, Europe, Germany, Japan, Australia, etc. For many years, the company has been committed to the research of raw materials. The company has its own trademark and dozens of patents, providing more convenient technical support for mold making and product production. P&M started domestic business from 2008,named Shundi Mould Factory. And opened the international market from 2014. 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.

P&M adheres to market-oriented to the quanlity of life and focus on quality service and continuous development of new products,determined to establish a better corporate image,and our friends at home and abroad to carry a wide range of business exchanges and cooperation, create brilliant.

Packing

Packaging according to your needs

1. By air ,it takes 3-7 days for delivery.

The goods can be shipped by DHL , Fedex , UPS .

2. By sea ,the delivery time is based on your port.

To South East Asian Countries takes about 5-12 days.

To Middle east countries takes about 18-25 days.

To European countries takes about 20-28 days.

To American countries takes about 28-35 days.

To Australia takes about 10-15 days.

To African countries takes about 30-35 days.

P&M Bike parts, centered around children, balances safety, health, and fun, aiming to add a bright color to children's beautiful childhood. We look forward to working together with you to serve our children.

The path of a child's growth is paved with bricks and tiles.

FAQ

1.Who are we?

We are based in Zhejiang, China, start from 2014,sell to North America(30.00%),Southern Europe(10.00%),Northern Europe(10.00%),Central America(10.00%),Western Europe(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%). There are total about 51-100 people in our office.

2.How can we guarantee quality?

Always a pre-production sample before mass production;

Always final Inspection before shipment;

3.What can you buy from us?

Mould, Plastic Product, Metal Product, Dental Product, CNC machining.

4.Why should you buy from us not from other suppliers?

We main do all kinds of 3d design, 3d printing and plastic metal molds tooling and products. We have our own engineer and factory. One-stop supply: 3d design - 3d printing - mold making - plastic injection.

5.What services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU;

Accepted Payment Currency: USD, EUR;

Accepted Payment Type: T/T,L/C,PayPal,Western Union,Escrow;

Language Spoken:English,Chinese,Spanish,French,Russian.

6.What are the characteristics of your service?

1. Your inquiry related to our products or prices will be replied within 24 hours.

2. Well-trained and experienced staffs to answer all your enquiries in fluent English.

3. Offering the support to solve the problem in the application or selling period.

4. Competitive prices based on same quality.

5. Guarantee samples quality same as mass production quality.