Precise Tension Control with Multi-Stage Haul-Off (Low & High Speed) – PP Band

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Payment Terms	T/T
Supply Ability	10SETS
Delivery Time	60DAYS
Packaging Details	WOODEN BOX
Configuration	Low-speed + high-speed multi-stage
Roller spec	φ268mm
Surface hardness	HRC58-60
Speed range	0-250 m/min
Control method	Closed-loop linkage
Core value	Precise tension control
Brand Name	CHUQI
Model Number	CQ-SPP120-6
Place of Origin	CHINA

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Product Details
Company Details

Product Specification


Payment Terms	T/T	Supply Ability	10SETS
Delivery Time	60DAYS	Packaging Details	WOODEN BOX
Configuration	Low-speed + high-speed multi-stage	Roller spec	φ268mm
Surface hardness	HRC58-60	Speed range	0-250 m/min
Control method	Closed-loop linkage	Core value	Precise tension control
Brand Name	CHUQI	Model Number	CQ-SPP120-6
Place of Origin	CHINA
High Light	PP strapping production haul-off system ，multi-stage strapping tension control ，closed-loop PP strapping production line

Multi-Stage Haul-Off System (Low-Speed & High-Speed Units) for Precise Tension Control

Product Introduction

Tension control is a critical factor affecting product thickness uniformity, stretching orientation effectiveness, and final winding quality in PP strapping production. This production line utilizes a multi-stage haul-off system consisting of a low-speed three-roller haul-off unit (0-40 m/min), a high-speed five-roller haul-off unit (0-250 m/min), and multiple high-speed three-roller haul-off units, forming a stepped speed and tension control network. The low-speed unit stabilizes the nascent tape after extrusion, while the high-speed units provide precise tension adjustment after stretching and setting. Multi-stage haul-off combined with closed-loop speed control ensures constant, fluctuation-free tension across all sections, providing a solid foundation for high-precision, high-speed production.

Main Specifications

Low-speed three-roller haul-off: φ268mm, face width 450mm, chrome-plated & polished, hardness HRC58-60, speed 0-40 m/min, motor 5.5KW
High-speed five-roller haul-off: φ268mm, face width 450mm, chrome-plated & polished, hardness HRC58-60, speed 0-250 m/min, motor 15KW
High-speed three-roller haul-off (multiple units): same specs, speed 0-250 m/min, motor 5.5KW
Speed adjustment accuracy: ±1 m/min
Control method: Inverter speed control, full-line closed-loop linkage

Technical Parameters

Item	Low-speed 3-roller	High-speed 5-roller	High-speed 3-roller
Roller Diameter	φ268mm	φ268mm	φ268mm
Face Width	450mm	450mm	450mm
Surface Treatment	Chrome-polished	Chrome-polished	Chrome-polished
Hardness	HRC58-60	HRC58-60	HRC58-60
Speed Range	0-40 m/min	0-250 m/min	0-250 m/min
Motor Power	5.5 KW	15 KW	5.5 KW
Adjustment Accuracy	±1 m/min	±1 m/min	±1 m/min

Customer Questions & Answers

Why are both low-speed and high-speed haul-off units needed?

The low-speed unit stabilizes the nascent tape after extrusion and before stretching, preventing accidental deformation of not-fully-cooled tape. The high-speed units transport the stretched and set finished tape, meeting high line speed requirements. Stage-specific control optimizes tension matching at each section, improving overall stability.

What are the advantages of a five-roller haul-off over a three-roller one?

The five-roller structure provides a larger wrap angle and more uniform pressure distribution, offering stronger gripping force. This is especially beneficial for high-speed operation or smooth-surfaced PP tape, effectively preventing line speed fluctuations and tension spikes caused by slippage.

How is speed synchronization ensured among multiple haul-off units?

The entire line uses PLC closed-loop coordinated control. The operator sets the main line speed on the touch screen, and the system automatically calculates the speed ratios for each haul-off unit, precisely executed via inverters. Individual units can be fine-tuned independently to suit different draw ratios and process requirements.

Company Details

Bronze Gleitlager

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and

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from Quality China Factory

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Business Type:

Manufacturer 
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Year Established:

2012 
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Total Annual:

5000000-8000000
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Employee Number:

50~60 
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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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Jiaxing Chuanqi Machinery Equipment Co., Ltd.
Yucheng town, Haiyan County, Jiaxing City, Zhejiang Province, China
https://www.strappingwinder.com/

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