| Quantity: | |
|---|---|
23304
YIXUN mold
8480419090
This professional-grade plastic hanger mould leverages advanced gas-assisted injection molding technology combined with a precision 4-point hot runner system to deliver superior quality, material efficiency, and production consistency. Designed specifically for recycled HIPS (High Impact Polystyrene) materials, this mould supports sustainable manufacturing without compromising part quality or productivity.
The mould is engineered to produce clothes hangers with a characteristic 16mm tubular cross-section and approximately 2.5mm wall thickness—achieving material savings of 20-40% while eliminating sink marks through internal gas channel formation.
| Specification | Detail |
|---|---|
| Product Name | Gas-Assisted Injection Molding Hanger Mould |
| Runner System | 4-Point Hot Runner (Needle-Valve Type) |
| Surface Finish | SPI B2 (Medium Semi-Glossy, 400 Grit Paper) |
| Recommended Material | Recycled HIPS (High Impact Polystyrene) |
| Mould Steel | P20 / 718H / S136 (options available) |
| Mould Life | 500,000+ shots |
| Cavity Configuration | Single / Multi-cavity available |
| Standard Compliance | ISO9001:2008 |
| Lead Time | 30-45 days |
Gas-assisted molding transforms conventional injection molding by using pressurized nitrogen gas to create hollow internal channels within the hanger structure. This technology delivers:
Material Savings: 20-40% reduction in material consumption compared to solid molding
Sink Mark Elimination: Internal gas pressure holds the plastic against the mold wall, preventing surface depressions in thick sections
Superior Strength-to-Weight Ratio: Hollow tubular sections provide exceptional rigidity comparable to solid parts of equal weight
Reduced Cycle Time: Faster cooling due to reduced wall thickness
How It Works:
Short shot injection (70-90% cavity fill) delivers molten HIPS into the cavity
High-pressure nitrogen gas (approx. 150-300 bar) is injected through a dedicated gas pin
Gas penetrates the melt, forming a hollow channel along the hook → shoulder spine → crossbar path
Gas pressure is maintained for 3-8 seconds to compensate for cooling shrinkage
After depressureization, the part cools and is ejected
The result is a hanger with a hollow tubular structure that offers exceptional rigidity while using significantly less material.
The hot runner system features needle-valve type gates positioned at strategic points to optimize melt flow and gas penetration:
Zero Runner Waste: Eliminates material waste from cold runners, maximizing material efficiency—critical when using premium recycled materials
Precision Flow Control: Sequential valve gate opening ensures controlled melt front progression for consistent part quality
Shorter Cycle Times: No runner cooling delay, improving overall productivity
Gas Compatibility: System designed for dedicated gas pins located in the mold cavity—gas does not pass through the hot runner, protecting heating elements
Runner Layout:
The 4-point configuration is optimized for hanger geometry, with gates typically positioned at:
Hook root (primary gas injection point)
Left shoulder
Right shoulder
Crossbar center (optional, geometry-dependent)
The SPI B2 finish is a medium semi-glossy surface texture achieved through 400-grit paper polishing. This grade offers:
| Attribute | Description |
|---|---|
| Grade | B2 |
| Finishing Method | 400 Grit Paper |
| Finish Look | Medium Semi-Glossy |
| Surface Roughness (Ra) | 0.10 to 0.15 μm |
| Steel Recommendation | 718H |
Why SPI B2 Matters:
Effectively removes machining and tooling marks
Provides a professional, consistent appearance suitable for consumer goods
Offers balance between aesthetic quality and cost efficiency
Creates a uniform surface that reduces friction during demolding
Compatible with decorative painting and labeling processes
This mould is specifically engineered to process recycled High Impact Polystyrene (HIPS), a sustainable material proven in hanger manufacturing.
| Material Property | Specification |
|---|---|
| Melt Temperature Range | 190 – 250°C |
| Mold Temperature Range | 10 – 60°C |
| Pre-Drying | 60-80°C for 2-4 hours (recommended) |
| Tensile Strength | 25+ MPa |
| Melt Flow Rate | 1.34 – 1.72 g/10 min (200°C, 5.00kg) |
Material Benefits:
Sustainable Content: Manufactured from post-consumer and post-industrial recycled plastic, reducing environmental impact
Cost-Effective: Lower cost alternative to virgin HIPS without significant performance loss
Excellent Processability: Broad processing window with outstanding thermal and shear stability
Dimensional Stability: Low shrinkage and excellent dimensional accuracy
Proven Application: Widely used for coat hangers, furniture fittings, and consumer goods
Regulatory Compliance: Meeds relevant safety and environmental standards
Processing Considerations:
Recycled HIPS may contain impurities, additives, or variations in melt flow rate. This mould design incorporates:
Venting systems optimized for potentially gassy materials
Wear-resistant steel for higher pressure requirements
Expanded processing window to accommodate batch-to-batch variation
Mould design incorporates critical gas-assisted principles:
Strategic Overflow Wells: Added at airway endpoints to ensure complete gas penetration and prevent gas entrapment
Optimized Wall Thickness Control: Precision machining ensures consistent wall thickness—gas flow is highly sensitive to thickness variations
Integrated Gas Pin Design: Dedicated gas injection nozzle positioned directly adjacent to the gate, leaving only a 3mm diameter witness mark on the part
Balanced Gas Channels: Carefully sized channels ensure uniform gas penetration across all cavities in multi-cavity configurations
The mould geometry is optimized for the specific structural demands of hanger production:
| Hanger Section | Design Feature | Benefit |
|---|---|---|
| Hook | Thickest section serves as gas injection point | Excellent gas penetration, sink mark elimination |
| Shoulder Area | Gas penetrates along reinforcing ribs | Creates hollow "I-beam" structures for strength |
| Crossbar | Vents at far ends allow gas escape | Ensures complete filling and consistent wall thickness |
By combining gas-assisted molding with recycled HIPS processing, this mould system supports:
Material Savings: 20-40% reduction in plastic consumption
Waste Reduction: Zero runner waste from hot runner system
Lower Carbon Footprint: Reduced energy consumption per part
Circular Economy Support: Uses post-consumer recycled content
Compliance: Meets environmental regulations and supports green branding initiatives
Total Environmental Impact:
Compared to conventional solid molding using virgin materials, this system can reduce overall material usage by up to 40% while utilizing recycled content—significantly lowering the carbon footprint of each hanger produced.
| Application | Description |
|---|---|
| Garment Hangers | Commercial and retail display hangers |
| Coat Hangers | Heavy-duty designs requiring high load capacity |
| Suit Hangers | With structural reinforcing features for tailored garments |
| Skirt/Trouser Hangers | With crossbar projections and clips |
| Branded Hangers | With custom colors, embossing, or labeling requirements |
| Step | Process | Detail |
|---|---|---|
| 1 | Mould Design | DFM Report, Mould Flow Analysis, 3D/2D Design |
| 2 | Steel Selection | P20/718H/S136 based on production volume and material requirements |
| 3 | Precision Machining | CNC, EDM, High-Speed Carving, Wire Cut |
| 4 | Surface Finishing | SPI B2 with 400-grit paper polishing |
| 5 | Heat Treatment | Hardening and tempering (if required) |
| 6 | Component Assembly | Hot runner installation, gas pin integration, cooling channel connection |
| 7 | Quality Inspection | Dimensional and fit testing per customer specifications |
| 8 | Trial Run | Sample production and validation |
| Standard / Component | Detail |
|---|---|
| Quality Management | ISO9001:2008 |
| Component Standards | HASCO, DME, MISUMI (customizable) |
| Mould Base | LKM (or equivalent) |
| Tolerances | ±0.01mm achievable |
| Hot Runner System | YUDO / INCOE / HUSKY (options available) |
| Item | Detail |
|---|---|
| Packaging | Anti-rust oil treatment, plastic film wrapping, wooden case |
| Port of Loading | Ningbo / Shanghai |
| Lead Time | 30-45 days standard (customizable) |
DFM Consultation: Design for manufacturability analysis and optimization
Mold Flow Analysis: Simulation of melt and gas flow for optimal design
Trial Support: On-site or remote trial support during sampling
Documentation: 2D/3D drawings, material certificates, and inspection reports
After-Sales Support: Maintenance guidance and spare parts supply
Contact our technical team for customized cavity configurations, specific material validation, or tailored design solutions to meet your production requirements.
email：susie@yixun-dg.com
Web: www.yixunmold.com
☎️WhatsApp：+8613543733748， https://web.whatsapp.com/
