Motek introduces dedicated injection mold solutions for drainage storage baskets and perforated storage baskets. These products feature dense drainage holes, perforated grid structures, and integrated handles—balancing kitchen utensil drainage, bathroom toiletries organization, fruit and vegetable washing/draining, and miscellaneous item sorting, widely used in kitchens, bathrooms, balconies, and dining tables. Compared with standard storage baskets, the core challenges of drainage storage basket molds lie in burr-free forming of dense drainage holes, load-bearing and deformation resistance under perforated structures, and balanced design between drainage hole density and basket strength. Motek configures dedicated solutions around drainage hole insert design, load-bearing rib layout, and cooling systems, helping customers achieve stable mass production of drainage storage baskets.
| Item | Specification |
|---|---|
| Applicable Plastics | PP (food-contact grade optional, good toughness, moisture-resistant, preferred for kitchen scenarios) / HDPE (high rigidity) / PET (transparent models optional) |
| Mold Material | P20 / 718H / NAK80 for cavity and core; S136 corrosion-resistant steel recommended for drainage hole inserts |
| Number of Cavities | 1×1 primarily; 1×2 or 1×4 evaluable for small drainage baskets |
| Mold Life | 300,000–800,000 shots (depending on steel selection and maintenance) |
| Cycle Time | 20–40 seconds (depending on basket size and cooling design) |
| Mold Base Standard | LKM / HASCO / DME or customer-specified |
| Runner System | Hot runner recommended (reduces cold slugs and stress) / Cold runner optional |
| Ejection Method | Ejector pins + stripper plate composite ejection; air-blow assistance for deep-cavity baskets |
| Drainage Hole Design | Dense through-holes at base/side walls, quick-change insert design, chamfered hole edges |
| Handle Structure | Reinforcement ribs/gradual wall thickness at handle-to-basket connections integrally formed |
Burr-Free Forming of Dense Drainage Holes.
The core function of drainage baskets is rapid water drainage, requiring densely distributed drainage holes at the base and side walls. Motek adopts precision insert forming for drainage holes, with hole edges chamfered or rounded to eliminate injection burrs and prevent scratching utensils or hands. Drainage hole inserts use quick-change designs for easy maintenance and replacement. Hole positions, diameters, and spacing are design-verified to balance drainage efficiency, structural strength, and small-item retention requirements. Industry experience shows that hole edge burrs are the primary quality defect of drainage basket products; Motek focuses on inspecting hole edge finish during trial molding.
Load-Bearing and Deformation Resistance Under Perforated Structures.
Dense perforations weaken the overall rigidity of the basket body, making it prone to deformation or handle breakage under full load. Motek forms reinforcement ribs and gradual wall thickness structures at handle roots and basket base-to-side-wall transition areas to enhance load-bearing capacity. Basket rim edges receive thickening or flanging treatment to enhance roundness/squareness retention, preventing rim expansion under full load. Mold flow analysis evaluates filling completeness at handle and basket base areas, preventing weak points caused by trapped gas.
Balanced Design Between Drainage Hole Density and Basket Strength.
Excessive drainage hole density weakens basket strength, while insufficient density affects drainage efficiency. Motek achieves balance between hole density and structural strength through mold flow analysis and structural simulation: dense hole areas are compensated with localized thickening or additional reinforcement ribs; sparse hole areas appropriately increase hole diameter to improve drainage efficiency. Hole layout and reinforcement rib orientation are coordinated to avoid stress concentration.
Food-Grade and Moisture-Resistant Material Adaptation.
Kitchen drainage baskets directly contact utensils and produce, requiring materials that meet food-contact requirements. Motek confirms food-grade PP grades with customers during material selection, and considers material shrinkage differences in cavity dimension calculations. Basket structures avoid water accumulation dead corners, with all corners and hole edges rounded for drainage and cleaning. Cavity surfaces receive polishing or nitriding treatment, ensuring the mold does not rust in long-term humid environments.
Handle and Carrying Convenience Design.
Drainage baskets must bear the weight of wet utensils or produce, with handles being critical load-bearing areas. Motek forms reinforcement ribs at handle-to-basket connections to prevent handle breakage during carrying. Handle edges are rounded to enhance grip comfort. For large-capacity drainage baskets, symmetrical handles or grip positions can be designed on both sides for two-handed carrying.
Appearance Surface Quality and Surface Treatment.
As visible kitchen/bathroom items, drainage baskets require clean, mark-free appearance surfaces. Motek positions gates at the basket base or non-appearance areas, using hot runners or submarine gates to conceal gate marks. Cavity surfaces can receive mirror polishing (high-gloss models) or fine-texture etching (matte/scratch-resistant models) according to product positioning, with texture uniformity subject to consistency control.
Demolding Mechanism Optimized for Deep-Cavity Perforated Baskets.
Drainage baskets are deep-cavity thin-wall perforated structures prone to deformation or hole edge scratching from vacuum adhesion during demolding. Motek adopts a stripper plate with ejector pin composite ejection solution, with ejection points preferentially located at non-appearance areas of the basket base. For deep-cavity baskets, air-blow assistance can be coordinated to release vacuum adhesion, preventing perforated areas from being scratched.
Motek plastic mold drainage storage basket / perforated storage basket molds are suitable for:
After the customer provides 3D product drawings, basket dimensions, drainage hole density requirements, and load-bearing requirements, Motek completes mold flow analysis (including drainage hole area filling evaluation, handle load-bearing analysis, and hole edge burr prediction) and mold structure confirmation; cavity steel and hot runner systems are procured according to agreed specifications; progress and key milestones are regularly reported during processing. During trial molding, emphasis is placed on verifying drainage hole forming precision, hole edge finish, handle connection strength, and basket deformation resistance, with samples provided for confirmation. Before shipment, molds undergo anti-rust treatment and action testing, with water circuit diagrams, hot runner wiring diagrams, consumable parts lists, and maintenance instructions provided. Technical support is available during the warranty period, with lifetime maintenance consultation.













Motek — From drainage storage baskets to perforated storage baskets, providing reliable mold solutions for injection molding of dense-hole thin-wall plastic products.