Mold for plastic clips

We specialize in custom plastic clip mold development, plastic clip component production, and optional assembly services—not finished product trading. Our molds are engineered to match your plastic clips’ unique needs (e.g., elastic clamping force, miniaturized structures, object-specific fitting) , with tailored designs, flexible/durable material compatibility, and optimized injection molding to deliver reliable plastic clip parts for office, electronics, and household use.

1. Custom Mold Structures: Tailored to Plastic Clip Requirements

Plastic clips (e.g., office paper clips, electronic wire clips, household cable organizers) demand elastic resilience (for repeated clamping), precise gap control (to fit clamped objects), and often miniaturized designs—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 elastic hinge structures (0.3–1mm thick for flexible clamping, ≥10,000 opening/closing cycles without fatigue), clamping jaws (with 0.1–0.5mm gap adjustment for different object thicknesses), and anti-slip tooth patterns (on jaw inner sides, 0.05–0.1mm depth to enhance grip). For miniaturized clips (size ≤10mm), the mold’s micro-core pins ensure full filling of tiny hinge gaps, avoiding brittle breakage.

Gating System: Designed to avoid weakening elastic structures and ensure uniform material flow. For small clips (size ≤20mm), micro pin gates (0.3–0.5mm) positioned at non-hinge, non-clamping areas are used—they prevent stress concentration in elastic zones and eliminate post-molding trimming. For clips with symmetric structures (e.g., double-jaw clips), hot runner systems with dual gates ensure balanced filling, reducing material waste by 10–15% and maintaining consistent clamping force across batches.

Cooling System: Optimized for clips’ thin-walled elastic zones (0.3–0.8mm) and thickened clamping jaws (1–2mm). Micro cooling channels (diameter 1–2mm) around hinge areas ensure rapid, even heat dissipation—critical for maintaining elastic performance (no overcooling that reduces flexibility) and reducing cycle time by 20–30%. For clips with uneven thickness, zonal temperature control prevents warping of clamping jaws (which would affect gap precision).

Ejection System: Uses ultra-thin ejector pins (diameter 0.5–1mm, arranged at non-functional edges) or vacuum ejection (for miniaturized clips) to protect elastic hinges and clamping jaws. Gentle ejection force avoids bending of hinge structures—ensuring the clip’s clamping resilience isn’t compromised.

2. Suitable Plastic Materials: Matched to Plastic Clip Applications

Plastic clips rely on elastic deformation for clamping and face repeated use (opening/closing cycles) and environmental exposure (humidity, temperature changes)—we select materials based on flexibility, fatigue resistance, and use scenarios:

PP (Polypropylene): Ideal for general-purpose clips (e.g., office paper clips, household bag clips). Offers excellent elastic resilience (recovers shape after 10,000+ cycles), good chemical resistance (to water, oils), and low cost—suitable for low-load clamping (0.5–5N force) and indoor use.

TPR (Thermoplastic Rubber): Used for soft-grip or high-friction clips (e.g., electronic wire clips, delicate item organizers). Provides high elasticity (Shore A 40–60) for gentle clamping (avoids damaging wires/soft materials) and anti-slip properties—ensures clips stay in place without scratching clamped objects.

Nylon 6 (PA6): Perfect for durable, medium-load clips (e.g., industrial cable clips, automotive wire organizers). Features good fatigue resistance (no elastic loss after 50,000+ cycles) and heat resistance (up to 100°C)—withstands harsh environments (e.g., engine bays, factory workshops) and clamping forces of 5–15N.

ABS + TPE Blend: Great for multi-functional clips (e.g., desktop cable clips with rigid bases). Combines ABS’s rigidity (for stable mounting) with TPE’s elasticity (for flexible clamping)—balances structural stability and clamping performance, suitable for office/electronic device use.

POM (Polyoxymethylene): Suitable for precision-clamping clips (e.g., medical tube clips, laboratory sample organizers). Boasts high dimensional accuracy (low shrinkage ≤2%) and low friction coefficient—ensures consistent clamping gaps (±0.05mm) and smooth opening/closing, ideal for applications requiring precise force control.

3. Injection Molding Process: Optimized for Plastic Clip Quality

Our injection molding process is fine-tuned to meet plastic clips’ elastic, precision, and miniaturization demands, with these core advantages:

Elastic Consistency: Injection parameters (temperature 180–240°C, pressure 50–90MPa) are optimized to enhance material flexibility—elastic hinges have uniform thickness (variation ≤0.02mm), ensuring consistent clamping force across all clips (force variation ≤10%). Each batch undergoes fatigue testing (10,000+ cycles) to confirm resilience.

Miniaturization Precision: Micro-injection molding machines (with servo-driven precision control) reproduce tiny features (e.g., 0.1mm anti-slip teeth, 0.3mm hinge gaps) with high accuracy—no missing details or burrs that affect clamping performance. Defect rate for miniaturized clips (≤10mm) is kept below 0.3%.

Efficient Production: Multi-cavity molds (64–128 cavities, based on clip size) maximize output. For standard 15mm paper clips, daily production reaches 500,000–800,000 components. Automated sorting and quality checks (via optical scanners) reduce labor costs and ensure 99.9% defect-free output.

Cost Optimization: Hot runner systems minimize material waste; for orders over 100,000 clips, per-unit cost can be reduced by 12–18%. Two-shot molding is optional for clips needing dual properties (e.g., rigid PP jaws + soft TPE grips), integrating functions in one step and cutting assembly costs.

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

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

Plastic Clip Manufacturing: Produce custom clips in various sizes (5×3×2mm to 50×20×10mm), shapes (single-jaw, double-jaw, U-shaped), and designs (with/without mounting adhesive, anti-slip teeth). Supports custom colors (RAL/Pantone codes) or surface treatments (matte finish, anti-static coating).

Value-Added Assembly: Optional assembly services for clip sub-assemblies—such as attaching double-sided adhesive tapes (for fixed mounting), assembling clip sets with organizing bases (e.g., desktop cable management kits), or adding metal springs (for enhanced clamping force). Delivers ready-to-use 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 clips in 2–3 days for you to test clamping force, fatigue resistance, and fitting accuracy—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.