Jiaxing Chuanqi Machinery Equipment Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 100sets |
| Delivery Time | 60days |
| Packaging Details | wooden box |
| Process Feature | Multi-Stage |
| Core Process | Stretching & Heat Setting |
| Equipment Support | Multi-Zone Oven |
| Performance Target | Ultra-High Strength |
| Quality Metric | Quality Metric |
| Process Controllability | Precise |
| Product Grade | High-End |
| Brand Name | CHUQI |
| Model Number | CQ-SPP75-4 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T | Supply Ability | 100sets |
| Delivery Time | 60days | Packaging Details | wooden box |
| Process Feature | Multi-Stage | Core Process | Stretching & Heat Setting |
| Equipment Support | Multi-Zone Oven | Performance Target | Ultra-High Strength |
| Quality Metric | Quality Metric | Process Controllability | Precise |
| Product Grade | High-End | Brand Name | CHUQI |
| Model Number | CQ-SPP75-4 | Place of Origin | CHINA |
| High Light | PP strapping band production line with heat setting ，multi-stage stretching PP strapping machine ，enhanced strength strapping band production equipment | ||
Product Introduction:
The core of high-strength PP products lies in the precise orientation and setting of molecular chains. This production line employs a multi-stage stretching and heat-setting process. After initial extrusion and cooling, the material undergoes low-temperature, moderate-ratio pre-orientation in the first drawing zone. It then enters a precisely temperature-controlled oven for preheating and relaxation. Next, high-temperature, high-ratio main stretching occurs in the second drawing zone to fully orient the molecular chains. Finally, heat relaxation and setting take place in the latter part of the oven to "freeze" the oriented structure and relieve internal stress. This staged, controlled process furthest exploits the material's potential to produce top-tier products with super tensile strength, low thermal shrinkage, and excellent dimensional stability.
Main Specifications:
Process Core: Combines staged stretching (pre-stretching, main stretching) with heat setting (preheating, heat relaxation).
Equipment Implementation: Drawing machine (provides draw ratios) works in coordination with a multi-zone oven (provides precise temperature fields).
Performance Target: Maximizes product longitudinal tensile strength, optimizes toughness, minimizes thermal shrinkage.
Technical Advantage: High process adjustability allows fine-tuning for different materials and product requirements.
Technical Parameter Table:
| Item | Parameter / Description |
|---|---|
| Process Stages | 1. Pre-stretching → 2. Preheating → 3. Main Stretching → 4. Heat Setting/Relaxation |
| Total Draw Ratio Range | 1.5 – 12 :1 (achieved through combination of stages) |
| Oven Zone Configuration | At least 4 independently controlled zones providing precise temperature environments for each stage |
| Temperature Control Accuracy | ±2°C (oven), ensuring stable temperatures for each stage |
| Applicable Products | Ultra-high strength strapping, high modulus flat yarn, low-shrinkage decorative strips, etc. |
| Process Flexibility | Temperature and speed ratio for each stage can be adjusted independently to adapt to different formulations |
Customer Q&A:
Q: What are the advantages of multi-stage stretching over a single high-ratio stretch?
A: The core advantages are improved stretching uniformity, reduced internal stress, and lower breakage rate. A single high-ratio stretch can cause local stress concentration and breakage. Multi-stage stretching allows molecular chains to orient progressively under controlled temperatures, resulting in a smoother process, more uniform orientation, ultimately higher product strength with more consistent properties, especially noticeable for thick or wide products.
Q: What are the specific functions of preheating and heat setting?
A: Preheating: Heats the cooled, original tape blank to its "rubbery state," softening it to withstand subsequent high-ratio stretching and avoiding brittle fracture from cold drawing. Heat Setting: Performed immediately after main stretching, maintaining the tape at elevated temperature under tension briefly. This allows partial relaxation and re-crystallization of the oriented molecular segments, "fixing" the stretching effect, significantly reducing the product's subsequent thermal shrinkage, and improving dimensional stability.
Q: Is adjusting this complex process difficult?
A: Operation is not complicated but requires understanding the process principles. All key parameters (speed ratios for each section, temperatures for each oven zone) are centrally set and displayed on the PLC touch screen. We will establish base process recipes during commissioning. When changing raw materials or target products, usually only fine-tuning of draw ratios and temperatures based on the base recipe is needed, guided by our experienced technicians.
Company Details
Business Type:
Manufacturer
Year Established:
2012
Total Annual:
5000000-8000000
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Jiaxing Chuanqi Machinery Equipment Co., Ltd. is a high-tech enterprise that specializied in the research and develop and manufacture of Paper strap production line, PP box strap production line and all kinds of automatic winder and PP PET strapping. Vision: Committed to becoming t... Jiaxing Chuanqi Machinery Equipment Co., Ltd. is a high-tech enterprise that specializied in the research and develop and manufacture of Paper strap production line, PP box strap production line and all kinds of automatic winder and PP PET strapping. Vision: Committed to becoming t...
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