Polyethylene (PE) parts manufacturer

We are a specialized Polyethylene (PE) parts manufacturer and your expert partner for custom Polyethylene (PE) molded parts. We engineer and produce high-performance plastic components and sub-assemblies designed for toughness, chemical resistance, and longevity. As a dedicated manufacturer—not a trading company—we provide complete in-house control from material science and tooling to high-volume production and secondary assembly, ensuring quality and reliability in every part.

Our Focus: Engineered PE Components & Integrated Solutions

We are Polyethylene (PE) parts manufacturer the critical plastic parts that ensure performance in demanding applications. Our core service is producing custom PE components that meet precise functional specifications. We add further value by performing secondary operations—such as welding, machining, or assembling with other components—to deliver robust, ready-to-integrate sub-assemblies, simplifying your supply chain and reducing total cost.

Custom Design Optimized for Polyethylene

Designing for PE requires specific expertise to maximize its unique benefits. We engineer each component for structural integrity and manufacturability:

Ribs & Gussets: Strategically designed to reinforce large surfaces or joints without inducing excessive stress, compensating for PE’s high flexibility.

Wall Thickness & Flow: Carefully managed to ensure proper filling and packing, preventing sinks and warpage in this highly crystalline material.

Hinge & Living Hinge Design: Utilizing specific PE grades (like HDPE) to create durable, integral hinges for closures and containers.

Bosses & Mounting Features: Reinforced to withstand creep (cold flow) over time, ensuring secure, long-term fastening.

Draft Angles & Shrinkage: Calculated to account for PE’s significant and variable shrinkage rates, guaranteeing dimensional accuracy and easy ejection.

Polyethylene Material Science: Selecting the Right Grade for the Task

Polyethylene is not a single material but a family with diverse properties. We guide you to the optimal grade:

High-Density Polyethylene (HDPE): Known for high strength-to-density ratio, excellent chemical resistance, and low moisture absorption. Ideal for chemical tanks, industrial containers, heavy-duty gears, and food handling parts.

Low-Density Polyethylene (LDPE): Offers greater flexibility, clarity, and impact resistance. Perfect for squeeze bottles, caps and closures, tubing, and flexible components.

Linear Low-Density Polyethylene (LLDPE): Superior tensile strength, impact, and puncture resistance compared to LDPE. Used for thin-walled containers, lids, liners, and parts requiring high durability.

Ultra-High Molecular Weight Polyethylene (UHMW-PE): An engineering-grade with exceptional wear resistance, impact strength, and low friction. Processed via compression molding; we advise on its use for wear strips, gears, and bearing surfaces.

Key PE Properties Driving Application Choice:

Exceptional Chemical & Moisture Resistance: Unaffected by most acids, bases, and solvents. The premier choice for fluid handling, chemical containers, and outdoor/underground applications.

High Impact Strength & Toughness: Performs reliably at low temperatures, making it ideal for cold-storage components, outdoor bins, and material handling totes.

Low Friction & Good Wear Resistance: Suitable for moving parts like gears, bushings, and conveyor components.

Excellent Electrical Insulation: Widely used for wire and cable jacketing, electrical connector housings, and conduit.

The PE Injection Molding Process: Mastering a Crystalline Material

Molding PE presents distinct challenges due to its high crystallinity and shrinkage. Our process is precision-engineered for consistency.

Process Specifics: We meticulously control cooling rates and mold temperatures to manage crystallinity, which directly impacts final part dimensions, clarity, and mechanical properties. Precise control over packing pressure and cycle time is critical to counteract high shrinkage and prevent voids or distortion.

Key Advantages of Our PE Molding Expertise:

Dimensional Stability Management: Through expert mold design (e.g., cooling line layout) and process optimization, we produce PE parts that meet tight tolerances despite the material's inherent shrinkage tendencies.

Weld Line Strength Optimization: Proper gate design and processing parameters ensure strong molecular bonding at weld lines, critical for part integrity.

Stress & Warpage Minimization: A balanced filling and controlled cooling process minimizes internal stresses, resulting in flat, stable components, even in large parts.

Surface Finish Consistency: We achieve uniform surface quality, from textured finishes for grip to smoother finishes for aesthetic parts.

Our Value: From Prototype to High-Volume Production

We are your single-source manufacturing partner. Our integrated services include:

Comprehensive DFM (Design for Manufacturability): Early analysis focused on PE’s characteristics to optimize part design, reduce cost, and prevent production issues.

Full In-House Tooling & Production: Complete control over the mold fabrication and molding process ensures quality, confidentiality, and faster turnaround.

Secondary Services & Assembly: We provide trimming, machining, heat staking, welding (hot plate, ultrasonic), and assembly to deliver finished sub-components.

Material Certification & Quality Assurance: We ensure traceability and that every batch of parts meets specified mechanical and dimensional requirements.

Choose us for your Polyethylene components when you need a manufacturer that truly understands this versatile yet complex material. We deliver more than just molded parts; we provide durable, chemically-resistant, and cost-effective engineered solutions built for long-term performance in challenging environments.

We are plastic mold maker and can provide custom mold service, we can make injection molds, blow molds, rotational molds and die-casting molds.

For custom injection molds, we can provide professional custom injection molding services. Usually Plastic injection mold manufacturing Molding are manufactured using injection molding technology. The mold materials for injection molds can be chosen from P20, 718, S136, H13 and so on. The mold material reflects the mold life and product material requirements.

For parts that require blow molding production, we can also provide professional custom blow molding services.

Plastic injection mold manufacturing Injection Mould making

1.We communicate product design according to samples/drawings and your requirements.

2.After the product design is confirmed, we carry out the mold design, we provide all kinds of injection molds, blow molds, silicone molds, die-casting molds services.

3.Material procurement, steel cutting and mold basic tools.

4.Mold assembly

5.Mold inspection, tracking and controlling mold processing.

6. We will inform you the date of mold trial and send you the sample inspection report and injection parameters together with the sample.

7.Your instruction and confirmation of shipment.

8.Prepare the mold before packing.

Plastic injection mold manufacturing molding Specification

1. Professional manufacturer, design, production injection mould and stamping mould quality control

2. rich export experience plastic injection mould and stamping mould

3. Reasonable price of design mould

4. Cavities: single or as per your requirements cavity

5. Treatment: S45C Pretreat>25Hrc,And Nitriding

6. Mould Steel: Cavity ,Core and slide: P20 ,2738,2136 available Moldbase :LKM available

7. Standard:DEM ,HUSKY,available

8. Hot runner: according to your demand

9. Life time: >300 Thousand Times

10. Package: Plywood case, anti-rust paint

Mold design：

Information you need to provide us

1. If you have drawings, 2D drawings, 3D drawings (preferably in STEP format).

2. If there are no drawings, you need to provide specific length, width, height and weight information. (It’s best to send us samples)

3. Should the mold be sent to your country, or leave the mold in our factory and we will help you produce the product.

4. Mold material requirements, cavity number requirements (you can tell us about the size of your injection molding machine)

5. Product material requirements and product quantity. (You can tell us about the use of the product and we can give you suggestions)

Transaction process:

Mold testing：

Once the mold is complete, I do a mold test. It usually takes about 3-5 days to complete. We need to assemble the mold, adjust the pressure data of the machine, and try production. We need to check whether there are problems during the normal production of the mold and make modifications.

Product packaging

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.

Factory

Video-1: (Factory Video)

Video-2: (Injection Molding)

Video-3: (Blow molding)

Video-4: (Blow molding)

Video-5: (Roll molding)

Customer satisfaction is our most important goal. We focus on communication and cooperation with our customers, always pay attention to their needs and provide quick response and quality customer service. Our injection production mold factory is committed to establishing long-term relationships and ensuring that our customers receive the best after-sales service during the purchase and use of our products, and we will definitely do our best to solve any problems for our customers.

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?

Ningbo P&M Plastic Metal Product Co., Ltd. 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 24hours.

2. Welltrained 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.