Mold for plastic keys

We specialize in custom plastic key mold development and plastic component production—not finished product trading. Our molds are engineered to match your unique key designs, with tailored structures, material compatibility, and efficient injection molding processes to deliver high-quality plastic key parts, plus optional assembly services.

1. Custom Mold Structures: Tailored to Your Key Design

Every plastic key mold is customized based on your key’s shape, size, and functional requirements. Core structural components include:

Cavity & Core: Machined with high-precision CNC tools to replicate your key’s details (e.g., teeth, grooves, logos). Tolerances as tight as ±0.01mm ensure key parts fit perfectly with locks.

Gating System: Customized to minimize material waste and avoid visible marks on the key surface. Options include edge gates (for small keys) or pin gates (for precision key designs).

Cooling System: Optimized for your key’s thickness—evenly distributed cooling channels prevent warping and reduce cycle time (critical for mass production).

Ejection System: Soft-ejection mechanisms (e.g., ejector pins or sleeves) protect delicate key structures, ensuring no damage during part removal.

2. Suitable Plastic Materials: Match Function to Application

We select plastic materials based on your key’s intended use (e.g., daily-use, automotive, industrial) to balance durability, cost, and performance. Recommended materials include:

ABS (Acrylonitrile Butadiene Styrene): Ideal for everyday keys (e.g., house, office keys). Offers good impact resistance, rigidity, and ease of coloring (supports custom logos or patterns via molding).

PC (Polycarbonate): Perfect for high-demand keys (e.g., automotive, electronic device keys). Features excellent heat resistance (up to 130°C) and shatterproof properties, suitable for harsh environments.

PA (Nylon): Used for industrial or heavy-duty keys (e.g., machinery, toolbox keys). Provides high wear resistance and tensile strength, withstanding repeated use without deformation.

POM (Polyoxymethylene): Great for precision keys (e.g., cabinet, safe keys). Boasts low friction, high dimensional stability, and smooth surface finish—ensuring smooth insertion into locks.

3. Injection Molding Process: Precision, Efficiency, Consistency

Our injection molding process is optimized for plastic key production, with core advantages:

High Precision: Computer-controlled molding machines (with servo motors) ensure consistent key dimensions across batches—critical for lock compatibility.

Fast Cycle Times: Average cycle time of 15–30 seconds per key (depending on size/material), enabling mass production (10,000+ parts per day for standard designs).

Cost-Effective: Reduced material waste (via optimized gating) and automated production lower per-unit costs, especially for large orders.

Process Control: Real-time monitoring of temperature, pressure, and cooling ensures no defects (e.g., bubbles, sink marks)—defect rate kept below 0.5%.

4. Our Services: Beyond Molds—Plastic Components & Assembly

We don’t just supply molds: we provide end-to-end solutions for plastic key parts:

Plastic Component Manufacturing: Produce finished plastic key blanks or semi-finished parts using our custom molds, tailored to your specifications.

Assembly Services: Optional assembly of key components (e.g., attaching metal inserts, adding rubber grips) to deliver ready-to-integrate sub-assemblies—saving you time and production steps.

Custom Support: From mold design (3D prototyping available) to material selection and process optimization, our team works with you to meet your unique needs

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.