Standards:

Applications:

Product Information:

The Velcro Fatigue Tester is used to evaluate the bonding performance of hook and loop fasteners (Velcro straps) after repeated peeling and fastening cycles.This instrument applies a weighted roller to the hook and loop material and performs repeated testing cycles. After the fatigue test, a force gauge is used to measure the average adhesion strength.It is suitable for hook and loop fasteners of various sizes and materials.The instrument features a fully automatic test mode with automatic counting, automatic stop upon test completion, and a buzzer alarm function. Samples are fixed using a simple winding-and-tension method, which allows quick replacement of test specimens and improves testing efficiency. The well-designed, user-friendly structure makes the instrument both aesthetically pleasing and practical. In addition, the compact size facilitates easy movement and flexible operation in various testing environments.The loop side and hook side of the hook and loop fastener are separately fixed onto different roller surfaces. During the test, the rollers rotate, causing continuous repeated bonding and peeling of the hook and loop material. After a specified number of cycles, the sample is removed for subsequent performance evaluation.

Standards

DIN 3415-1:1990 — Textile adhesive zippers
GB/T 3903.21-2008 — Footwear — Test methods for hook and loop fasteners: shear strength before and after repeated opening and closing
ISO 22776:2004 — Footwear — Test methods for accessories: hook and loop fasteners — shear strength before and after repeated fastening cycles
JSB 39-1993 — Military nylon brushed hook and loop fastener tape
DIN EN 12242:1999 — Hook and loop fasteners — Determination of peel strength
GB/T 23315-2009 — Hook and loop fasteners

Features

Keypad + counting module control
Digital counter display with preset timing function (1–99999 s). The test stops automatically when the preset time is reached.
Cam clamping mechanism
The compact cam-clamping design allows quick and secure fixation of specimens, improving testing efficiency.
Flexible and compact design
The mounting holes of the driving and driven rollers are specially designed to ensure convenient specimen installation, smooth transition, and low noise during testing.

Application Fields

The G401 Velcro Fatigue Tester is used to evaluate the bonding performance of hook and loop fasteners (Velcro straps) after repeated peeling and fastening cycles.
It is suitable for performance verification in new product development, quality control in manufacturing departments, third-party testing institutions, laboratory product performance validation, and material performance testing by quality and technical supervision authorities.

Parameters

Technical Specifications
Test Mode: Automatic	Test Cycles: 5000 cycles
Drive Roller Diameter (Upper Roller): Ø162.5 mm	Test Load: 5 kg
Driven Roller Diameter (Lower Roller): Ø160 mm	Counter: Digital display, 0–999.999 s
Roller Width: 70 mm	Material of Components: Stainless steel
Speed: 60 rpm	Weight: 33 kg
Groove Size: Width 4 mm, Length 55 ± 2 mm	Power Supply: 220 V, 50 Hz
Reversing Time: 30 s reversal	Dimensions: 650 × 450 × 600 mm