PP Strapping Band Extrusion Line – Precise Tension

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Tension adjustment	Real-time automatic
Supply Ability	1 SET
Delivery Time	90DAYS
Low power	5.5 KW
Core value	Precise tension control
Low speed	0-40 m/min
Roller hardness	HRC58-60
Applicable process	Full line
Packaging Details	FCL
Control method	Closed-loop linkage
High power	15 KW
High speed	0-250 m/min
Speed accuracy	±1 m/min
Place of Origin	CHINA
Brand Name	CHUQI

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Company Details

Product Specification


Tension adjustment	Real-time automatic	Supply Ability	1 SET
Delivery Time	90DAYS	Low power	5.5 KW
Core value	Precise tension control	Low speed	0-40 m/min
Roller hardness	HRC58-60	Applicable process	Full line
Packaging Details	FCL	Control method	Closed-loop linkage
High power	15 KW	High speed	0-250 m/min
Speed accuracy	±1 m/min	Place of Origin	CHINA
Brand Name	CHUQI
High Light	PP strapping band extrusion line ，PP strap production line with precise tension ，PP strapping band manufacturing equipment

PP Strapping Band Extrusion Line – Precise Tension

Precision Tension Control System

Tension control is a critical factor affecting thickness uniformity and final winding quality in PP strapping production. This production line features a multi-stage haul-off system consisting of a low-speed three-roller haul-off unit (0-40 m/min, 5.5KW) and a high-speed five-roller haul-off unit (0-250 m/min, 15KW). 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 (accuracy ±1 m/min) ensures constant, fluctuation-free tension across all sections. Rollers are chrome-plated and polished with HRC58-60 hardness, wear-resistant and non-damaging to the tape.

Technical Specifications

Haul-off Unit	Speed Range	Motor Power	Rollers	Installation Position
Low-speed 3-roller	0-40 m/min	5.5 KW	3	After first tank, before extension box
High-speed 5-roller	0-250 m/min	15 KW	5	After extension box, before embosser
High-speed 3-roller (multiple)	0-250 m/min	5.5 KW	3	After oven, after secondary tank, etc.

Key Features & Benefits

Multi-stage haul-off: Low-speed + high-speed combination covers full-line tension control
Low-speed unit: Gentle traction of nascent tape prevents stretching deformation
High-speed units: Precise tension control after stretching and setting
Speed accuracy: ±1 m/min for full-line closed-loop synchronization
Chrome-plated rollers: HRC58-60 hardness, wear-resistant and non-damaging
Stable tension: Multi-stage traction eliminates cumulative tension fluctuations
Fast response: Inverter/servo drives for instant tension adjustment
Reduced scrap: Stable tension ensures uniform thickness, reducing dimensional rejections
High-speed compatible: High-speed units support 250 m/min line speed
Quality enhancement: Constant tension ensures consistent product performance

Technical Questions & Answers

Why is a multi-stage haul-off system needed?

The low-speed unit stabilizes the nascent tape after extrusion and before stretching, preventing accidental deformation. The high-speed units transport the stretched and set finished tape. Stage-specific control optimizes tension matching at each section.

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.

What are the effects of tension fluctuation?

Tension fluctuation causes uneven thickness, uneven stretching, and ultimately affects strapping strength and roll shape quality. In severe cases, it may cause breakage or inconsistent winding tightness.

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

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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