Mold for plastic cases

We specialize in custom plastic tray mold development, plastic tray component production, and optional assembly services—not finished product trading. Our molds are engineered to match your plastic trays’ unique needs (e.g., load-bearing capacity, item-specific compartments, anti-slip features) , with tailored designs, industry-grade material compatibility, and optimized injection molding to deliver durable plastic tray parts for logistics, food storage, and electronic component packaging.

1. Custom Mold Structures: Tailored to Plastic Tray Requirements

Plastic trays (e.g., logistics shipping trays, food storage trays, electronic component trays) demand structural rigidity (for load-bearing), precise compartment sizing (for item fit), and often anti-slip/stackable features—our mold structures are customized to address these key demands:

Cavity & Core: Machined via high-precision large-format CNC machining (tolerance as tight as ±0.03mm) to replicate critical features—such as reinforced grid bases (2–4mm thick for load dispersion), compartment dividers (1–2mm thick, spacing accuracy ±0.1mm for item fitting), anti-slip raised dots (0.5–1mm height on base/sides), and stackable notches (for stable stacking, tolerance ±0.05mm). For deep-tray designs (depth ≥50mm), the mold’s draft angle optimization ensures easy demolding while maintaining compartment wall straightness (no inward warping that affects item placement).

Gating System: Designed to avoid weakening load-bearing zones and ensure uniform material flow. For large trays (size ≥500×500mm, e.g., logistics trays), hot runner systems with multi-point sequential gates distribute plastic evenly across the grid base—reducing material waste by 18–25% and preventing hollow spots in reinforcement ribs. For small trays (size ≤200×200mm, e.g., electronic component trays), edge gates positioned at non-load-bearing edges eliminate surface marks and post-molding trimming.

Cooling System: Optimized for trays’ large, grid-like structures and uneven thickness (e.g., thick base ribs + thin compartment walls). Zonal cooling channels (with separate temperature control for thick/thin areas) and cooling plates under the grid base ensure rapid, even heat dissipation—critical for maintaining structural stability (no base bowing under load) and reducing cycle time by 30–40%. For trays with dense compartment dividers, additional cooling pins are added to accelerate cooling of narrow gaps.

Ejection System: Uses stripper plates (for large flat trays) or ejector pins (arranged in dense matrices at the base’s non-compartment areas) to avoid damage. Balanced ejection force prevents bending of dividers or cracking of reinforcement ribs—ensuring the tray’s load-bearing and compartment functionality aren’t compromised.

2. Suitable Plastic Materials: Matched to Plastic Tray Applications

Plastic trays face heavy load pressure, environmental exposure (moisture, temperature changes, chemical contact), and frequent handling—we select materials based on load capacity, durability, and use scenarios:

PP (Polypropylene): Ideal for general-purpose trays (e.g., food storage trays, household organization trays). Offers good impact resistance (no cracking from light drops), food-safe certification (FDA-compliant), and chemical resistance (to water, mild detergents)—suitable for indoor, low-load scenarios (≤10kg per tray) and contact with food/household items.

HDPE (High-Density Polyethylene): Used for durable, outdoor/industrial trays (e.g., logistics shipping trays, garden tool trays). Provides high impact resistance (even at low temperatures, -20°C), weather resistance (no UV yellowing), and wear resistance—withstands rough handling and outdoor exposure, suitable for medium-load scenarios (10–25kg per tray).

ABS (Acrylonitrile Butadiene Styrene): Perfect for electronic component trays (e.g., PCB board trays, semiconductor packaging trays). Features high dimensional stability (compartment spacing variation ≤0.05mm) and rigidity—ensures delicate electronic parts aren’t damaged during storage/transport. It also supports anti-static coating (critical for electrostatic-sensitive components).

PA66 + Glass Fiber (20–30% GF): Great for heavy-duty industrial trays (e.g., automotive part trays, machinery component trays). Combines high tensile strength (up to 80MPa) and heat resistance (up to 120°C)—supports heavy loads (25–50kg per tray) and withstands industrial environments (e.g., oil, dust, high temperatures).

PET (Polyethylene Terephthalate): Suitable for transparent or lightweight trays (e.g., retail display trays, cosmetic sample trays). Offers high transparency (85–90% for product visibility) and moderate rigidity—ideal for retail scenarios where item visibility is key, with load capacity ≤5kg per tray.

3. Injection Molding Process: Optimized for Plastic Tray Quality

Our injection molding process is fine-tuned to meet plastic trays’ load-bearing, structural, and large-size demands, with these core advantages:

Load-Bearing Reliability: Injection parameters (temperature 180–260°C, pressure 70–110MPa) are optimized to enhance material density—reinforcement ribs and grid bases have no internal voids, ensuring uniform load distribution. Each batch undergoes load testing (static load of 1.5× rated capacity for 24 hours) to confirm no deformation or cracking, with a failure rate below 0.2%.

Compartment Precision: Computer-controlled servo molding machines maintain compartment spacing and wall thickness within tight tolerances (±0.1mm for spacing, ±0.05mm for wall thickness)—ensuring items fit snugly (no shifting during transport) and trays are interchangeable for batch use.

Efficient Large-Size Production: Specialized large-clamping-force molding machines (clamping force ≥1200 tons for trays ≥800×600mm) enable stable production. Multi-cavity molds (2–8 cavities, based on tray size) balance output and quality—for standard 300×200mm electronic trays, daily production reaches 8,000–12,000 components.

Cost Optimization: Hot runner systems reduce material waste by 18–25%; for high-volume orders (10,000+ trays), per-unit cost can be reduced by 12–18%. Integrated molding of reinforcement ribs/dividers eliminates post-processing (e.g., secondary cutting of compartments), cutting additional costs and ensuring consistent quality.

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

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

Plastic Tray Manufacturing: Produce custom trays in various sizes (100×100mm to 1200×800mm), depths (5–150mm), and designs (grid, compartmentalized, stackable). Supports custom colors (RAL/Pantone codes), surface treatments (anti-slip, anti-static, UV-resistant), and additional features (handles, label slots).

Value-Added Assembly: Optional assembly services for tray sub-assemblies—such as attaching foam inserts (for delicate item protection), adding anti-slip rubber pads (for stable placement), or assembling tray stacks with lids (for sealed storage). Delivers ready-to-use sub-assemblies, saving your production time.

Custom Design Support: Offer 3D mold design and rapid prototyping (via large-format CNC or SLA 3D printing). We can produce 5–10 prototype trays in 4–6 days for you to test load capacity, compartment fit, and stackability—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.