Micro Injection Mold Tooling

We are experts in manufacturing Micro Injection Mold Tooling. Our core advantage is Specialized Micro-Gating and Venting Design, which resolves the complex challenges of filling sub-gram parts and preventing air traps. The Injection Molds are machined using high-precision EDM and grinding processes. Advanced Process Technology integrates specialized micro-sized hot runner nozzles and high-speed injection capabilities. Our rigorous Quality Assurance ensures the dimensional accuracy of the tiny features, confirming that the Micro Injection Mold Tooling delivers flawless and ultra-precision components.

1. Custom Mold Structures: Tailored to Plastic Button Requirements

Plastic buttons (e.g., phone keypad buttons, appliance control buttons, industrial instrument buttons) demand consistent press travel, stable feedback, and often integration of functional details—our mold structures are customized to address these key demands:

Cavity & Core: Machined via high-precision micro-CNC machining (tolerance as tight as ±0.01mm) to replicate critical features—such as pressable convex/concave surfaces (0.5–2mm height for comfortable contact), internal reinforcing ribs (0.3–0.8mm thick to maintain shape after 100,000+ presses),（light-transmitting holes, diameter 0.1–0.5mm for backlit buttons）, and waterproof grooves (for sealed buttons, 0.2–0.4mm width to fit rubber gaskets). For buttons with multi-layer structures (e.g., rigid base + soft top), the mold’s two-shot design ensures tight bonding between layers, avoiding delamination.

Gating System: Designed to avoid affecting press functionality and visible defects on contact surfaces. For small buttons (size ≤10mm, e.g., phone keys), micro pin gates (0.2–0.4mm) positioned at non-press, non-visible edges are used—they prevent stress concentration in press zones and eliminate post-molding trimming. For large buttons (size ≥20mm, e.g., appliance power buttons), hot runner systems with single-point gates ensure uniform material flow, reducing waste by 8–12% and maintaining consistent wall thickness (critical for stable press feedback).

Cooling System: Optimized for buttons’ thin-walled press zones (0.3–1mm) and thickened base areas. Micro cooling channels (diameter 0.8–1.5mm) around press surfaces ensure rapid, even heat dissipation—preventing warping (which would alter press travel)

Ejection System: Uses ultra-thin ejector pins (diameter 0.3–0.8mm, arranged at non-press, non-visible areas) or vacuum ejection (for miniaturized buttons) to protect press surfaces and functional details. Gentle ejection force avoids scratching contact areas or deforming reinforcing ribs—ensuring the button’s press performance isn’t compromised.

2. Suitable Plastic Materials: Matched to Plastic Button Applications

Plastic buttons face frequent pressing (wear), hand contact (sweat/ oils), and environmental factors (temperature, moisture)—we select materials based on press durability, tactile feel, and use scenarios:

ABS (Acrylonitrile Butadiene Styrene): Ideal for general-purpose buttons (e.g., TV remote buttons, office printer buttons). Offers good impact resistance (no cracking from repeated presses), easy coloring (supports custom RAL/Pantone shades), and moderate rigidity—provides crisp press feedback (100–300g force) and suits indoor, low-moisture environments.

PC (Polycarbonate): Perfect for backlit or high-temperature buttons (e.g., car dashboard buttons, oven control buttons). Features high light transmittance (85–90% for clear backlighting), heat resistance (up to 130°C), and shatterproof properties—withstands temperature fluctuations and ensures consistent light diffusion over long use.

TPU (Thermoplastic Polyurethane): Used for soft-touch or waterproof buttons (e.g., fitness tracker buttons, shower speaker buttons). Provides elastic feel (Shore A 60–80) for gentle press feedback, excellent water resistance (IP67/IP68 compatible), and wear resistance—avoids discomfort from prolonged pressing and prevents water ingress.

POM (Polyoxymethylene): Great for precision-press buttons (e.g., medical instrument buttons, industrial control buttons). Boasts low friction coefficient (0.15–0.3) for smooth press travel (no "sticking"), high dimensional stability (low shrinkage ≤2%), and wear resistance—ensures consistent press force (variation ≤5%) over 500,000+ presses.

PP (Polypropylene): Suitable for low-cost, lightweight buttons (e.g., basic calculator buttons, toy buttons). Offers good chemical resistance (to water, mild detergents), low density (reduces product weight), and easy processing—suits low-wear, low-press-frequency scenarios (≤10,000 presses).

3. Injection Molding Process: Optimized for Plastic Button Quality

Our injection molding process is fine-tuned to meet plastic buttons’ press precision, tactile feel, and durability demands, with these core advantages:

Press Consistency: Injection parameters (temperature 180–260°C, pressure 50–90MPa) are optimized to ensure uniform material density—press surfaces have consistent height (variation ≤0.02mm) and reinforcing ribs maintain stable elasticity, enabling press force variation ≤5% across all buttons (no "soft" or "stiff" keys).

Tactile & Functional Precision: Mold cavity polishing (Ra ≤0.3μm for smooth contact surfaces) and micro-engraving (for texture patterns) ensure consistent tactile feel.

Efficient Production: Multi-cavity molds (64–128 cavities, based on button size) maximize output. For standard 8mm-diameter remote buttons, daily production reaches 600,000–1,000,000 components. Automated sorting and quality checks (via press force testing, visual inspection) reduce labor costs and ensure 99.9% defect-free output.

Cost Optimization: Hot runner systems reduce material waste by 8–12%; for high-volume orders (100,000+ buttons), per-unit cost can be reduced by 10–15%. Two-shot molding is optional for multi-material buttons (e.g., ABS base + TPU top), integrating functions in one step and cutting assembly costs.

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

We provide end-to-end solutions for plastic button production, not just molds:

Plastic Button Manufacturing: Produce custom buttons in various sizes (3×3mm to 30×30mm), shapes (circular, square, rectangular), and designs (with/without 透光孔，texture patterns, waterproof grooves). Supports custom colors (RAL/Pantone codes), surface treatments (matte, glossy, anti-fingerprint), and press force calibration (50–500g).

Value-Added Assembly: Optional assembly services for button sub-assemblies—such as attaching conductive rubber domes (for press feedback), bonding waterproof gaskets (for sealed applications), or assembling button arrays (e.g., keypad modules with 10–100 buttons). Delivers ready-to-integrate sub-assemblies, saving your production time.

Custom Design Support: Offer 3D mold design and rapid prototyping (via micro-SLA 3D printing). We can produce 100–200 prototype buttons in 2–3 days for you to test press feedback, tactile comfort, and functional performance (e.g., backlighting, waterproofing)—optimizing the mold design before mass production.

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.