Custom Plastic Lid Injection Moulds
1.Precision Fit & Dimensional Stability
Our custom injection moulds for plastic lids are engineered to produce parts with tight tolerances (±0.02mm), ensuring consistent snap-fit engagement, sealing performance, and smooth opening/closing. Advanced cooling channel design minimizes warpage and shrinkage, delivering flat, stable lids batch after batch.
2.Flexible Design Features
We integrate hinges (living or pin-type), tamper-evident bands, sealing ribs, drip-prevention edges, and label recesses directly into the mould. Multi-cavity configurations (up to 16+ cavities) enable high-volume production of lids for food containers, battery enclosures, cosmetic packaging, and industrial pails.
3.Cost-Effective Production
Optimized runner systems (cold or hot runner) reduce material waste and cycle time. Durable tool steel construction (P20, H13, or stainless) ensures 500,000+ cycles with minimal maintenance, lowering your per-part cost for long-running lid moulding projects.
1. Product Introduction – Precision Moulds for High-Quality Plastic Lids
Our Custom Plastic Lid Injection Moulds are purpose-built tooling systems designed to produce consistent, dimensionally accurate plastic lids for a wide range of industries — from food packaging and consumer goods to battery enclosures and industrial containers.
Lids present unique moulding challenges: they require tight sealing surfaces, consistent snap-fit engagement, minimal warpage, and often include features like living hinges, tamper-evident bands, or gasket grooves. Our moulds are engineered to meet these demands with precision steel construction, advanced cooling, and optimized gate design.
Whether you need lids for 18650 battery housings, food pails, cosmetic jars, or electronic enclosures, our custom moulds deliver flat, stable, and functional parts — cycle after cycle.
2. Key Benefits – Why Choose Our Custom Lid Moulds?
| Benefit | Description |
|---|---|
| Precision Fit | Tolerances of ±0.02mm ensure consistent sealing and snap-fit performance |
| Design Flexibility | Integrate living hinges, tamper-evident bands, sealing ribs, and label recesses |
| High Cavitation | 2, 4, 8, 16, or 32+ cavities for high-volume lid production |
| Fast Cycles | Optimized cooling reduces cycle time by 15–30% |
| Durable Construction | P20, H13, or stainless steel – 500,000 to 1,000,000+ cycles |
| Cost Efficiency | Lower per-part cost through multi-cavity moulds and reduced scrap |
For lid applications ranging from battery pack covers to food containers, our moulds deliver the perfect balance of quality, durability, and productivity.
3. Types of Lids We Mould – Applications Across Industries
| Industry | Lid Type | Key Features |
|---|---|---|
| Battery & Energy Storage | Battery housing lid, terminal cover | Snap-fit, gasket groove, UL94 V-0 compatibility |
| Food & Beverage | Container lid, cup lid, pail lid | Tamper-evident band, sealing rib, hinge |
| Cosmetics & Personal Care | Jar lid, pump cap, compact cover | Aesthetic surface, logo recess, thin wall |
| Consumer Electronics | Enclosure lid, battery door | Living hinge, latch feature, EMI shielding option |
| Industrial | Drum lid, tool box lid, filter cover | Chemical resistance, heavy-duty snap, gasket groove |
| Medical | Specimen container lid, pill bottle cap | Cleanability, biocompatible material support |
4. Custom Design Features – What We Can Integrate Into Your Lid Mould
Our moulds are designed to accommodate a wide range of lid-specific features:
4.1 Closure & Sealing Features
| Feature | Description | Typical Application |
|---|---|---|
| Snap-fit (cantilever or annular) | Secure closure without screws | Battery lid, food container |
| Threads (continuous or interrupted) | Screw-on closure | Cosmetic jar, pill bottle |
| Sealing rib / interference fit | Creates compression seal | Liquid-tight containers |
| Gasket groove | For O-ring or silicone gasket | IP-rated battery enclosures |
| Tamper-evident band | Visual proof of opening | Food pails, drink cups |
4.2 Hinge Features
| Hinge Type | Mould Consideration | Best For |
|---|---|---|
| Living hinge (integral) | Requires flexible material (PP, PE) | One-piece lid + container |
| Pin hinge (two-part) | Separate pins or snap-in design | Heavy-duty boxes, tool cases |
4.3 Cosmetic & Branding Features
Logo / text recess – For branding or safety warnings
Texture / graining – SPI finishes from glossy to matte
Date code / cavity number – Traceability for quality control
4.4 Functional Features
Vent / pressure relief – For battery lids or hot-fill applications
Spoon / accessory holder – Integrated into lid interior
Stacking ribs – For nestable lids in storage
5. Material Options for Lids – Matching Material to Application
| Material | Key Properties | Best Lid Applications |
|---|---|---|
| PP (Polypropylene) | Excellent living hinge performance, chemical resistant | Food containers, battery lids (non-FR) |
| PE (Polyethylene) | Flexible, low cost, food-safe | Cup lids, pail lids |
| ABS | Rigid, good impact strength, paintable | Electronics enclosures, battery covers |
| PC (Polycarbonate) | Clear, high heat resistance, strong | Medical lids, transparent battery covers |
| PC/ABS Blend | Balanced toughness and heat resistance | Industrial equipment lids |
| Nylon (PA6/PA66) | High strength, wear resistant | Heavy-duty industrial lids |
| UL94 V-0 Grades | Flame-retardant (PP, ABS, PC) | Battery housings, energy storage |
| Anti-static / Conductive | Prevents static buildup | Electronics, cleanroom applications |
Our recommendation for battery lids: UL94 V-0 PC/ABS or flame-retardant PP for cost-sensitive projects.
6. Mould Construction – Built for Precision and Long Life
6.1 Cooling System – Critical for Flat Lids
Lids are prone to warpage. Our cooling design prevents this:
Conformal cooling – Cooling channels follow the lid contour
Baffles & bubblers – For deep lid cavities
Uniform temperature distribution – Delta T < 5°C across cavity
Cycle time reduction – 15–30% faster than standard layouts
6.2 Ejection System
| Ejection Method | Best For |
|---|---|
| Ejector pins | Simple lid geometries |
| Stripper plate | Thin lids, fragile features (tamper-evident bands) |
| Air ejection | Deep-drawn lids, cosmetic surfaces |
| Robot pick-out | Fully automated production |
7. Gate & Runner Design for Lids
Lids require careful gate placement to avoid cosmetic defects and ensure flatness.
Runner system: Cold runner (cost-effective) or hot runner (material-saving for expensive FR plastics).
Cavitation options:
| Cavities | Output per hour (30s cycle) | Best For |
|---|---|---|
| 1 cavity | 120 lids | Prototypes, large lids |
| 2 cavities | 240 lids | Medium volume |
| 4 cavities | 480 lids | Production |
| 8 cavities | 960 lids | High volume |
| 16 cavities | 1,920 lids | Mass production (caps, small lids) |
| 32+ cavities | 3,840+ lids | Ultra-high volume (beverage caps) |
8. Manufacturing Process & Quality Control
8.1 Mould Manufacturing Steps
| Step | Description | Duration |
|---|---|---|
| 1. Design & DFM | 3D modelling, mould flow analysis, gate location optimization | 3–5 days |
| 2. Steel preparation | Cutting, heat treatment (if required) | 3–5 days |
| 3. CNC machining | 3/5-axis milling, EDM for details | 2–4 weeks |
| 4. Fitting & assembly | Core/cavity fit, ejector system, cooling | 1 week |
| 5. Polishing & texturing | SPI finish, logo engraving, texture | 3–5 days |
| 6. Testing | Dry cycle, cooling pressure test, sample moulding | 2–3 days |
8.2 Quality Inspection Checklist
✅ Cavity/core dimensions (CMM, ±0.01mm)
✅ Surface finish verification (roughness tester)
✅ Cooling circuit flow & pressure test
✅ Ejector system function (smooth travel)
✅ Gate and runner dimensions
✅ Hardness check (for production steels)
✅ Sample part inspection (flatness, sealing surface, snap-fit force)
9. Project Workflow – From Concept to Production
5-step process diagram – Design → Mould Manufacturing → Sampling → Approval → Production
Step 1: Design Review (3–5 days)
You provide: Lid 3D model (STEP/IGES/STP), material, target volume, sealing requirements
We provide: DFM report, gate location proposal, cavity count recommendation, firm quote
Step 2: Mould Manufacturing (4–7 weeks)
Steel cutting, CNC machining, heat treatment, fitting, polishing
Weekly progress updates with photos
Step 3: Sampling & Validation (2–3 days)
Sample lids moulded on our in-house machines
Dimensional report, flatness measurement, sealing surface inspection
20–50 sample lids shipped to you
Step 4: Customer Approval (1 week)
You test fit, function, sealing, and snap engagement
Any minor adjustments made at no charge
Step 5: Production or Delivery
Mould shipped with spare parts kit and maintenance manual
Or we run production lids for you (moulding service available)
Total lead time: 5–8 weeks typical for a production lid mould
10. Technical Specifications – Complete Reference
| Parameter | Range / Options |
|---|---|
| Mould type | Two-plate or three-plate |
| Cavity count | 1, 2, 4, 8, 16, 32, or custom |
| Mould steel | P20, H13, 420 stainless, or aluminium (prototype) |
| Lid diameter range | 10mm to 500mm+ |
| Lid wall thickness | 0.8mm – 3.0mm (typical) |
| Typical tolerance | ±0.02mm – ±0.05mm |
| Surface finish | SPI A1 (high gloss) to SPI D3 (matte/textured) |
| Gate types | Edge, tunnel, pin-point, diaphragm, fan |
| Runner system | Cold runner (standard) or hot runner |
| Hinge capability | Living hinge (PP/PE) or pin hinge |
| Cooling | Straight channels, baffles, conformal |
| Ejection | Pins, stripper plate, or air |
| Expected mould life (P20) | 500,000+ cycles |
| Expected mould life (H13) | 1,000,000+ cycles |
| Lead time | 5–8 weeks |
| Warranty | 12 months on workmanship and materials |
11. Why Choose Us for Your Custom Lid Moulds?
With over 15 years of experience in injection mould manufacturing — including hundreds of lid moulds shipped worldwide — we offer:
Lid-specific expertise – We understand living hinges, tamper-evident bands, and sealing surfaces
In-house mould design & manufacturing – No outsourcing, full control
Free DFM (Design for Manufacturing) report – We optimize your lid design before cutting steel
Competitive pricing – 20–30% lower than many competitors for equivalent quality
Fast lead times – 5–8 weeks for most production lid moulds
Low MOQ – From prototype (100 lids) to high-volume (1M+ lids/year)
Spare parts kit – Every mould includes ejector pins, springs, and wear parts
Global shipping – Air, sea, or express with secure crating
12. Request a Quote – Start Your Custom Lid Mould Project Today
Ready to produce high-quality plastic lids with a custom injection mould built specifically for your application?
What we need to get started:
Lid 3D model (STEP, IGES, STP, or hand sketch for early discussion)
Material type and grade (e.g., PP, ABS, UL94 V-0 PC/ABS)
Estimated annual volume (e.g., 200,000 lids/year)
Special requirements (living hinge? tamper-evident band? gasket groove? logo?)
Moulding machine specifications (if known – tonnage, platen size)
What exactly are your OEM services?
Our OEM (Original Equipment Manufacturing) service allows you to bring your unique outdoor gear ideas to life. We handle the entire product development and manufacturing process based on your specifications, designs, and brand requirements. From initial concept and material sourcing to prototyping, production, and quality control, we become your dedicated manufacturing partner. Your brand logo and identity will be applied to the final products.What is your MOQ (Minimum Order Quantity)?
We understand that brands need flexibility, especially when launching new products. Therefore, we offer flexible MOQs, which vary depending on the product complexity, materials required, and customization level. We encourage you to discuss your project with us, and we will do our best to propose a feasible MOQ.Can you help us develop a product from just an idea or a sketch?
Absolutely! We specialize in turning concepts into high-quality, market-ready products. Our product development team will work closely with you to refine your idea, select appropriate materials, create technical drawings, and develop prototypes until your vision is perfectly realized.What are the typical steps in the OEM process with your company?
1.Initial Inquiry & Consultation: You share your concept, target market, and requirements. 2.Quotation & Agreement: We provide a detailed quotation, and once approved, we sign a service agreement. 3.Research & Development (R&D): Our team works on technical designs, material selection, and sample development. 4.Prototyping: We create a physical prototype for your evaluation and feedback. 5. Molds：After design confirming, we will creat mold before production. 5.Sample Approval: You approve the final sample, confirming quality, design, and functionality. 6.Mass Production: Upon your production order confirmation, we begin manufacturing your products. 7.Rigorous Quality Control (QC): We conduct inspections throughout production and a final random inspection before shipment. 8.Shipping & Delivery: We securely pack and arrange shipment to your designated destination.How long does the entire process take from concept to delivery?
The timeline varies significantly based on product complexity and order quantity. A general estimate is: Development & Sampling: 4-8 weeks. Mass Production: 4-6 weeks after sample approval. Please note that this is an estimate, and a precise timeline will be provided with your project quotation.Who owns the intellectual property (IP) and mold/tooling for the custom products?
You retain 100% ownership of your brand identity, designs, and product IP. For any custom molds or tooling created specifically for your project, ownership can be transferred to you upon agreement. We strictly adhere to confidentiality and will never use your designs for other clients.How do you determine the price for an OEM order?
The unit price is determined by several factors, including: Product complexity and design Cost of raw materials Labor and manufacturing processes involved Order quantity Packaging requirements We strive to offer competitive pricing without compromising on quality.What is your quality control process?
Quality is our top priority. Our QC process includes: Incoming Quality Control (IQC): Inspection of all raw materials. In-Process Quality Control (IPQC): Checks during key stages of production. Pre-Shipment Inspection (PSI): A final random inspection of finished products against your approved sample and our quality standards. We can provide detailed QC reports.Can we inspect the products before they are shipped?
Yes. We highly recommend a pre-shipment inspection. You are welcome to send your own QC inspector, or you can hire a third-party inspection company to perform the check at our factory. We can also provide you with photos and videos of the production and final products.How do you handle shipping?
We have extensive experience in shipping outdoor gear globally. We can handle the logistics for you and arrange shipment via sea (for large volumes) or air (for smaller, urgent orders). We work with reliable freight forwarders to ensure a smooth process. Shipping costs will be included in your final quotation.
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1.High Precision & Quality: Ensures consistent production of lampshades with excellent dimensional accuracy and a superior, ready-to-use surface finish.
2.Optimized Cycle Time: Features an efficient cooling system and streamlined design that significantly reduces production time for higher output and lower cost per part.
3.Durable Construction: Built with high-grade mold steels and components, it offers an extended service life and reliable performance even in high-volume production runs.
4.Enhanced Efficiency: Incorporates automated ejection systems and simplified maintenance features, reducing operator intervention and ensuring smooth, uninterrupted manufacturing.
5.Design Flexibility: The robust yet adaptable mold design allows for potential future modifications or customization to accommodate different lampshade designs or materials.
1.Unparalleled Durability: Crafted from premium hardened steel for exceptional longevity and resistance to wear, ensuring a massive production lifespan.
2.High-Precision Manufacturing: Enables the production of kettles with ultra-tight tolerances, guaranteeing perfect thread engagement and a leak-proof spout.
3.Innovative, User-Centric Design: Facilitates the creation of ergonomic kettles with secure handles and anti-slip textures.
1.Long Service Life (Made from hardened tool steel)
2.Excellent Product Finish (Smooth, high-gloss bucket surface)
3.High Production Efficiency (Fast cycle times)
4.Stable & Reliable Performance (Durable construction)
5.Easy Demolding (Prevents part sticking and damage)
6.Corrosion-Resistant (For extended mold life)
7.Low Maintenance (Designed for continuous operation)
1.Superior Weather & Impact Resistance
Engineered to endure harsh outdoor conditions—resists cracking, UV damage, and temperature swings.
2.High Flexibility & Tear Resistance
Stretches without losing shape and withstands repeated use, ideal for rugged outdoor crafting and DIY projects.
3.Eco-Friendly & Reusable
Made from durable, non-toxic rubber—perfect for sustainable outdoor living and reducing waste.
4.Perfect for Outdoor Creations
Design custom garden decorations, pathway markers, bird feeders, and camping accessories with ease.
5.Easy Demolding & Sharp Details
Ensures clean releases and preserves fine patterns every time, even in humid or variable outdoor environments.
6.Compact & Portable
Lightweight and easy to pack—take your molding projects anywhere, from the backyard to the trails.
1.Unmatched Durability for Harsh Environments
Engineered for Impact Resistance: Manufactured from high-grade, UV-stabilized polymers to withstand brutal impacts, drops, and abrasion from rock, ice, and trail debris.
2.Weatherproof & Corrosion-Resistant: Superior material formulation ensures complete resistance to moisture, salt spray, extreme temperature swings, and UV radiation, preventing fading, brittleness, and corrosion.
3. Lightweight & Ergonomic Design for Peak Performance
Precision-Engineered Lightweighting: Advanced mold flow analysis allows for complex geometries that maximize strength while minimizing weight, reducing fatigue on long treks and climbs.
All-Terrain Grip & Handling: Textured, over-molded surfaces provide a secure, non-slip grip even with wet hands or gloves, ensuring total control in rain, snow, or mud.
4. Superior Structural Integrity & Reliability
Seamless, Monolithic Construction: Injection molding creates a single, unified part with no weak seams or joints, guaranteeing exceptional structural integrity under load and stress.
Rigorous Quality Assurance: Every component is tested to perform flawlessly across an extreme temperature range (-40°F to 220°F / -40°C to 104°C), ensuring reliability from desert to alpine environments.
1.Built for the Elements: Superior Weather & UV Resistance: We specialize in molding with outdoor-grade elastomers like EPDM and Silicone, which provide exceptional resistance to weathering, ozone, UV degradation, and extreme temperature swings, ensuring your gear won't fail in the sun, snow, or rain.
2.Uncompromising Sealing for Waterproof Integrity: Create reliable environmental seals for critical outdoor applications. Our process produces waterproof gaskets for hatches, O-rings for hydration systems, and seals for sensor housings with consistent density to keep moisture, dust, and debris out.
3.Cost-Effective for Durable Goods Production: While ideal for prototyping, compression molding becomes highly economical for medium to high-volume production runs of durable components, from kayak hatches and dive computer cases to batches of custom O-rings for repair kits.
4.Ergonomic & Secure Grip Solutions: Mold comfortable, non-slip grips with specific Shore A hardness values for tools, knife handles, trekking poles, and watercraft paddles. The process allows for overmolding on substrates for superior adhesion and durability.
1. Superior Material & Craftsmanship:
Crafted from premium polyresin for exceptional weight, durability, and a cold, stone-like feel that signifies quality.
Meticulous hand-casting and assembly ensure each piece is a unique work of art, not just a mass-produced toy.
2. Exquisite Detail & Realism:
Breathtaking attention to detail, from intricate costume textures and armor weathering to lifelike skin pores and hair strands.
Features dynamic posing and authentic character likeness, perfectly capturing the essence of the original IP.
3. High-Definition Paint Application:
Expertly hand-painted with precision airbrushing and meticulous wash techniques for unparalleled depth and realism.
Features advanced painting effects such as subtle gradients, metallic finishes, and realistic battle damage for a truly immersive display.
4. Exclusive & Collectible:
Produced in a strictly limited edition (e.g., [Number] pieces worldwide), ensuring exclusivity and long-term value for collectors.
Each piece includes a unique serial number and a certificate of authenticity, guaranteeing its genuine origin.
5. Impressive Presence & Display Value:
Substantial size and significant weight command attention, making it the definitive centerpiece of any collection or display.
Often includes a themed base or diorama that enhances the narrative and visual impact of the character.
6. For the True Enthusiast:
The ultimate premium collectible for discerning fans and serious collectors, representing the highest tier of merchandise available.
A must-have grail item that showcases deep passion for the character and franchise
1.High Efficiency & Automation: Designed for fully automatic, high-speed cycling, significantly boosting production output and reducing labor costs.
2.Exceptional Durability: Manufactured from premium hardened steels, the mold ensures a long service life and consistent performance even under high-volume production.
3.Superior Surface Finish: The mold cavity is precision-polished or textured to produce stools with a flawless, high-quality aesthetic appearance right out of the machine.
4.Innovative Cooling System: An optimized cooling channel layout guarantees uniform and rapid part cooling, minimizing cycle times and preventing warpage for perfect dimensional stability.
Superior Impact Protection
Precision-engineered cavity structure ensures uniform wall thickness, enhancing impact resistance and meeting international safety standards.
2. High-Visibility Customization
Supports multi-color injection and in-mold labeling for vibrant graphics and reflective elements, ensuring both aesthetics and visibility.
3. Ergonomic & Lightweight
Optimized rib design reduces weight without compromising strength, providing all-day wearing comfort for users.
4. Durable Mold Construction
Made of hardened steel with efficient cooling channels, enabling high-speed production while maintaining consistent quality over long cycles.
1.Precision & Quality
Our custom hot runner molds deliver exceptional part consistency by maintaining exact melt temperature throughout the injection cycle. Drop-by-drop balanced filling eliminates weld lines, sinks, and dimensional variations, producing high-quality plastic battery housings with superior surface finish and tight tolerances (±0.02mm).
2.Material & Cost Savings
The runnerless design eliminates sprue waste, reducing material consumption by 15–30% compared to cold runner systems. This is especially valuable for engineering plastics (PC, ABS, UL94-V0) used in battery components. Shorter cycles and automated operation lower per-part costs for high-volume production.
3.Efficiency & Reliability
Advanced valve gate sequencing allows precise control over fill patterns and pack pressure. Faster injection speeds and reduced clamp opening times increase output by 20–40%. Our hot runner systems feature durable heaters, wear-resistant nozzles, and easy maintenance access, ensuring reliable 24/7 operation for demanding battery housing applications.
