Yige Mold: Professional Manufacturing Solutions for Spice Container Molds

I. Product Definition and Market Positioning

A spice container mold is a specialized injection mold used for producing kitchen condiment storage containers, representing an important branch of food-contact-grade plastic product molds. As a professional manufacturer in this field, Yige Mold offers products covering various structures such as single-compartment, multi-compartment, rotary, and hanging types, meeting the multiple needs of modern kitchens for condiment classification, sealing, moisture resistance, and aesthetics. With the increase of small-sized households and the trend toward refined kitchen storage, the spice container market is experiencing rapid growth, placing higher demands on the precision and functionalization of molds.

II. Core Technical Features of the Mold

1. Compartmental Modular Design

Yige Mold adopts a multi-cavity compartmental structure, enabling rapid switching between different compartment numbers (2, 3, 4, or 6 compartments) through movable inserts. Each compartment is independently designed to ensure dimensional accuracy and sealing performance. A thin-wall partition design is used between compartments, with wall thickness controlled at 0.8-1.2mm, balancing structural strength with lightweighting. The bottom of compartments can be designed with a slight tilt angle (1°-3°) to facilitate condiment pouring.

2. Precision Sealing Structure

The interface between the lid and the container body employs a multi-level sealing structure:

• Planar sealing: Contact surface flatness ≤0.05mm, surface roughness Ra ≤0.1μm

• Lip sealing: Elastic lip with a design thickness of 0.5-1.0mm and 15-20% compression

• Snap-fit sealing: Snap-fit tolerance ±0.05mm, open/close cycle life ≥5000 times

The sealing structure must pass an air-tightness test (no leakage after holding 0.05MPa pressure for 30 seconds), ensuring condiment protection against moisture and cross-contamination.

3. Hinge and Opening/Closing Mechanisms

• Integrated hinge: Made from PP material, thickness 0.6-0.8mm, bending life ≥10,000 cycles

• Snap-fit positioning: Opening angle adjustable between 90°-180°, positioning accuracy ±1°

• Damping structure: Optional slow-return damping for gentle opening and closing

4. Surface Treatment and Marking

• Texturing: Mold cavity surfaces can be treated with matte, leather, wood grain, or other textures to enhance grip comfort and slip resistance.

• Marking slot design: Lid pre-design includes slots for adhesive labels or laser-engraved markings.

• Transparent window: Some products feature transparent viewing windows for easy content identification.

III. Materials and Process Standards

1. Mold Steel

Core components from Yige Mold utilize:

• Cavity materials: Pre-hardened mold steels such as S136H, NAK80, P20, hardness HRC 38-42

• Moving parts: Hot-work mold steels like SKD61, H13, hardness HRC 48-52

• Surface treatment: Mirror polishing (Ra≤0.05μm), nitriding treatment (HV≥1000)

2. Product Materials

• PP material: Compliant with FDA 21 CFR 177.1520 standards, temperature resistant from -20°C to 120°C, suitable for microwave heating.

• AS material: High transparency, light transmittance ≥88%, suitable for transparent spice containers.

• PP+TPE: Lid features a hard-soft combination, enhancing sealing performance and tactile feel.

3. Injection Molding Process Parameters

Injection process parameters from Yige Mold:

• Barrel temperature: 190-230°C for PP material, 220-260°C for AS material

• Mold temperature: 40-80°C, adjusted based on product wall thickness

• Injection pressure: 60-120MPa

• Holding pressure: 60-80% of injection pressure

• Holding time: Calculated at 1-3 seconds per mm of product wall thickness

IV. Product Structural Design Highlights

1. Multi-functional Integrated Design

Product design from Yige Mold:

• Stacking function: Bottom designed with positioning protrusions, top with positioning recesses for stable stacking.

• Hanging function: Lid designed with hanging holes or hook structures to save countertop space.

• Non-slip base: Bottom equipped with TPE non-slip pads, friction coefficient ≥0.8.

• Integrated measuring spoon: Some products include an integrated measuring spoon; the spoon handle can be clipped onto the lid.

2. User-Friendly Detail Design

• Grip comfort: Lid edges designed with rounded corners R1.5-R2.0 to prevent hand discomfort.

• Easy opening: Lid designed with opening grooves or protrusions for easy finger operation.

• Anti-accidental opening: Snap-fit design incorporates a secondary locking structure to prevent accidental opening during transportation.

3. Lightweighting and Strength Balance

Yige Mold optimizes structure through CAE analysis, achieving product lightweighting while ensuring load-bearing capacity (full load ≥2kg):

• Wall thickness distribution: Main body wall thickness 1.5-2.0mm, reinforcing ribs thickness 0.8-1.0mm.

• Reinforcing rib layout: 45° cross pattern, improving bending strength by 30%.

• Fillet transitions: R-angle ≥0.5mm to eliminate stress concentration.

V. Quality Control System

1. Dimensional Accuracy Control

Dimensional control standards from Yige Mold:

• Primary dimension tolerance: ±0.15mm/100mm

• Fitting dimension tolerance: ±0.05mm

• Flatness: ≤0.3mm/300mm

• Roundness: ≤0.1mm

2. Performance Testing Standards

Performance testing from Yige Mold:

• Sealing test: 0.05MPa air pressure held for 30 seconds, no leakage.

• Drop test: Free fall from 1.0m height under full load, no breakage.

• Temperature resistance test: -20°C to 80°C temperature cycling 10 times, no deformation or cracking.

• Opening/closing cycle life: Snap-fit opening/closing ≥5000 cycles, no breakage or loosening.

• Stacking test: 5-layer stacking under full load, no deformation after 24 hours.

VI. Production Efficiency Optimization

1. Rapid Mold Change System

Mold change system from Yige Mold:

• Standardized interface: Molds use standard mold bases, mold change time ≤15 minutes.

• Preheating system: Mold preheated to set temperature, reducing heating-up time by 50%.

• Rapid positioning: Uses locating pins and blocks, positioning accuracy ±0.02mm.

2. Automated Production Integration

Automated production from Yige Mold:

• Robot part removal: Removal cycle ≤8 seconds, avoiding damage from manual handling.

• Inline inspection: CCD vision inspection system automatically identifies cosmetic defects.

• Data acquisition: Real-time production data collection, OEE overall equipment efficiency ≥85%.

3. Mold Maintenance

Mold maintenance from Yige Mold:

• Regular maintenance: Comprehensive maintenance performed every 50,000 cycles.

• Wear part warning: Database established for wear part life, enabling advance warning for replacement.

• Remote diagnostics: Supports remote fault diagnosis and technical support.

VII. Summary of Professional Manufacturing Points

The successful manufacturing of spice container molds by Yige Mold relies on four core elements:

1. Precision Design: Accurate structural design based on product functional requirements, ensuring sealing performance and opening/closing life.

2. Quality Materials: Matching of food-grade raw materials with high-performance mold steels, meeting safety and durability requirements.

3. Advanced Processes: Synergistic action of intelligent temperature control and venting systems, ensuring dimensional stability and surface quality.

4. Strict Quality Control: Full-process quality control from mold machining to product molding, ensuring products meet international standards.