40L Storage Box Mould

40L Storage Box Mould – Custom Plastic 40L Storage Container / Organization Crate Injection Mold Manufacturer

ZHONGYUE MOULD is a professional Chinese injection mold manufacturer supplying 40L Storage Box Moulds / 40 Liter Household Storage Container Injection Molds (Medium-Capacity Rectangular Organization Crates, Closet/Office/Workshop Storage Boxes) to global household-products wholesalers, supermarkets, and private-label brands. The 40L storage box is a versatile mid-to-large home/warehouse organizer — most commonly molded in PP (Polypropylene, MFR 8–15 g/10min, optionally with UV stabilizer & color MB) with a smooth or light VDI 27–30 outer surface (SPI B1/B2 satin inner face) for easy cleaning and attractive appearance. Our 40L box molds feature dual isolated water circuits with central baffle Ø10–12mm + BeCu (Beryllium Copper) insert at bottom corner radii, hidden submarine gate on the top flange or inner rim (no visible gate vestige), DFM-verified wall thickness (2.0–3.0mm), and a single-cavity (1×1) layout with optional 2-cavity or 4-cavity matching lid mold for balanced daily output. Carry-handle recess (if present) is handled via a small loose insert or mini angled slide (H13 nitrided).

From 40L rectangular stackable storage boxes (with/without side carry-handle recess), matching snap-fit or hinge lids (opaque/clear), to inner divider trays (optional separate mold), we provide full DFM review and Moldflow cooling/fill analysis before steel cutting.

Plastic Injection Storage Box Mould specifications :

Make your next Plastic Storage Box Mould project brighten!

What Is a Plastic Storage Box Mold & How Does It Work? (40L Context)

A Plastic Storage Box Mold is a precision cavity-and-core tool mounted in an injection molding machine. For a 40L box (~500×350×300mm, draw depth 280–320mm), the mold consists of a hollow cavity (shaping outer walls, stacking lips, handle recess) and a long core (forming inner volume). PP resin is heated to ~180–230℃, injected under high pressure into the closed mold, fills every corner — including handle recess & stacking ledges — then cools for 22–35s cycle (typical for 40L PP box, shot weight ≈2.0–2.8kg). After solidification, the mold opens and the finished 40L storage box is ejected.

A well-built 40L storage box mold from ZHONGYUE MOULD delivers ≥300,000 shots (P20) or ≥500,000–1,000,000 shots (718H/2738HH) with consistent wall thickness, sharp corner definition, and clean parting-line finish — suitable for home, office, light industrial use.

Key Engineering Features of a Durable 40L Storage Box Mold

A 40L box mold runs on 500T–1000T injection machines and must endure higher clamp force & thermal cycling than 10L/20L tools. Our molds include:

High-Grade Mold Steel — Cavity & Core in P20 (pre-hard HRC 28–33) standard; upgradeable to 718H (HRC 33–38) or 2738HH for longer life & better polish/texture retention.

Precision-Machined Cavity Dimensions — PP shrinkage ~1.2–1.8% compensated; box L/W ±0.2mm, stacking lip flatness ±0.3mm, ensuring perfect lid-seat & stackability across batches.

Dual Isolated Cooling Circuits + BeCu Corner Insert — Ø10–12mm central baffle through core + BeCu (MOLDMAX™/Ampcoloy) insert at bottom corner radii where wall thickens; 2 isolated water circuits (cavity side & core side) keep ΔT ≤3–4℃ inlet–outlet, reducing cycle & warp on deeper 280–320mm draw.

Smooth Inner Surface & Controlled Outer Texture — Core polished SPI B1/B2 (easy-release, smooth box interior); Cavity SPI B1 satin standard or light VDI 27–30 leather grain on request — NO rattan/woven EDM etching unless specially ordered.

Mini Slide / Loose Insert for Carry Handle Recess (if any) — H13 (2344 ESR) nitrided insert or shallow angled slide (stroke 5–15mm) for side-handle undercut; interference checked in 3D assembly.

Deep-Core Venting — 0.01–0.015mm parting-line vents + vent pins / porous steel vent at last-fill zone (core top/shoulder) — critical on 280–320mm draw PP boxes to prevent burn/short-shot.

Applications Across Markets

Why Choose ZHONGYUE MOULD for Your 40L Storage Box Mold?

Selecting your injection mold partner is critical. ZHONGYUE MOULD has 15+ years' experience in household commodity molds — storage boxes (5L–120L), crates, chairs, dust bins, rattan baskets — with in-house CAD/CAM/CAE (UG NX, Pro/E, SolidWorks, Moldflow), full-size CNC & EDM, and export track record to Europe, North & South America, Southeast Asia, Middle East.

We don't just "make a mold" — we review your part drawing, run DFM & Moldflow cooling/warp analysis, suggest wall-thickness / gate / ejection / handle-undercut improvements, and only proceed to steel cutting after your sign-off. Each mold ships with T1 trial video, sample parts + CMM report, operation manual & spare-parts list.

Our 40L Storage Box Molding Procedure at ZHONGYUE MOULD

3D Product & Mold Design (DFM Stage) — Receive your 2D/3D (STP/IGS/X_T); analyze wall thickness (2.0–3.0mm), draft angle (≥1.5° smooth / +0.5° if light grain), gate location (submarine on top inner flange), cooling layout (dual circuits + BeCu spec.), carry-handle recess (mini-insert or slide), and lid-match clearance. Provide free DFM report & improvement suggestions.

Material & Steel Confirmation — P20 (std.) or 718H/2738HH per volume; mold base LKM/DME/HASCO; hot runner (YUDO/SYNVENTIVE 1-tip open) or cold sub-gate per preference.

Precision Machining — High-speed CNC rough/finish cavity & core, deep-hole drilling for cooling baffle, H13 mini-insert nitriding & hand-fit, BeCu insert installation & thermal-contact check, SPI B1/B2 polish or VDI light etch.

Assembly, T1 Trial & Correction — Run on in-house machine, check ovality/flatness, wall thickness scan, lid-seat fit (if lid sample available), supply trial video + samples + dimensional report. Fine-tune if needed.

Final Packaging & Shipment — Fumigation-free heavy-duty wooden case; mold manual; spare parts (ejector pins, water nozzles, sprue bushing, mini-insert if applicable); steel certs & heat-treatment docs.

After-Sales Support — 1-Year warranty (non-man-made damage), free spare parts, remote technical guidance for re-cutting vents / adjusting ejection.

Frequently Asked Questions — 40L Storage Box Mold

Q: How is the 40L box mold different from 10L or 50L?

A: 40L is a mid-capacity box — deeper draw (~280–320mm) than 10L (180–250mm) → needs dual cooling circuits + BeCu corner insert and typically runs on 500T–1000T machines vs. 350T–650T for 10L. Shot weight ≈2.0–2.8kg PP (vs. ~0.7–1.2kg for 10L, ~2.8–3.5kg for 50L). 50L mold is heavier, sometimes with thicker reinforcement & larger base. All are 1×1 cavity standard; lid mold cavity count matched to body cycle.

Q: Do you also make the matching lid mold?

A: Yes. We quote the 40L box body as 1×1 cavity and the lid as 2-cavity or 4-cavity mold (shorter cycle ~10–18s) to balance daily output. Lid can be PP (opaque/colored), clear PS, or ABS (premium) — separate quote.

Q: What steel do you recommend for 300k–500k shot program?

A: P20 (HRC 28–33) is cost-effective for 300k+ shots. For 500k–1M shots or better surface retention with light VDI grain, we recommend 718H (HRC 33–38) or 2738HH.

Q: Submarine gate or hot runner?

A: Default is cold sub-gate on inner top flange (hidden vestige, auto-degating) — simple & reliable. Hot runner (YUDO/SYNVENTIVE 1-tip open) is optional for high-volume runs to eliminate runner scrap.

Q: Can you add a carry-handle recess / undercut?

A: Yes — designed via a loose changeable insert or mini shallow slide (H13 nitrided). DFM checks interference & draft. Handle itself is NOT molded — bought-in plastic/metal assembled post-molding.

Q: What do you need for a quotation?

A: 2D drawing (PDF/DWG) + 3D model (STP/IGS/X_T) OR clear photos with dimensions (L×W×H, wall thickness, weight, capacity), annual volume, preferred cavity count for lid (2×1 etc.), material (PP MFR / UV yes/no). If you also want lid mold, please share lid sketch/dimensions or confirm "same perimeter as body top".

Request a Quote for Your 40L Storage Box Mould

Send your 40L storage box 2D drawing + 3D model (or sample photos with detailed dimensions) and project requirements. Tell us if you also need the matching lid mold. ZHONGYUE MOULD will provide a free DFM report + Moldflow cooling/warp summary + formal quotation within 24–48 working hours.

Contact us now to start your 40L Plastic Storage Container / Organization Crate Injection Mold project!

How we processing the project?

About us

Driven by the philosophy:

“Quality Makes the Future, Focus Creates Professional”

Zhongyue Mould is a leading company in the plastic injection air conditioner Cover mould industry. Our highly experienced team of engineers and designers have many decades of combined experience in plastic air conditioner Cover mould design and manufacturing. We provide a comprehensive service, specializing in the production of high-quality and high-precision air conditioner Cover moulds. We have also assisted numerous customers in customizing various types of plastic air conditioner Cover moulding lines.

We can also offer comprehensive assistance in the management of your production process. The procurement department will purchase high-quality raw materials, while the technical department will select the appropriate plastic formula. In accordance with the parameters of the plastic air conditioner Cover mould life requirements and market positioning, we will select the most suitable plastic air conditioner Cover parameters, structure, etc. Our extensive production capacity allows us to deliver plastic air conditioner Covers promptly, at competitive prices and with guaranteed quality.