Project Description

Velcro Fatigue Tester

Hook-And-Loop Fastener Fatigue Tester China Manufacturer

Velcro Fatigue Tester is used to determine the anti-fatigue performance of touch and close fasteners by measuring the test sample’s peel strength or shear strength after being repeatedly opened and closed under controlled conditions.

Velcro tape is also called the hook-and-hoop fastener, which consists of 2 fabric strips which are attached to the opposing surface to be fastened. One strip has tiny hooks, and the other one has smaller loops. When the two are placed together, the hooks catch in the loops, and the two strips fasten temporarily. When pulling or peeling either one component, the strips produce an unusual “ripping” sound. It is widely applied to shoes, apparel, textiles, etc.

Velcro Fatigue Test Principle

The test strip with hooks and the test strip with loops are attached to the two rollers whose diameter are 162.5 mm and 160 mm separately, allowing the surface with hooks to contact the surface with loops. A specified load is applied according to the width. The lower roller is a driving wheel, which drives the upper driven roller to rotate back and forth repeatedly at a given velocity, ensuring that the hook and loop fasteners fixed on the rollers are continuously attached and peeled to achieve the purpose of fatigue. After a specified number of cycles, the two strips are removed from the rollers and cut each into a piece of 75 × 20 mm in size. The test pieces are rolled with the weight of the roller to make both fit evenly. The peeling strength or adhesive strength is measured using a universal tensile testing machine.

Test Standards

  • DIN 3415 Textile touch and close fasteners
  • BS EN ISO 22776 Footwear-test methods for accessories: touch and close fasteners-shear strength before and after repeated closing
  • BS EN ISO 22777 Footwear-test methods for accessories: touch and close fasteners-peel strength before and after repeated closing
  • SATRA TM123 Closure strength of touch and close fasteners
  • GB/T 3903.20 Footwear-test methods for accessories: touch and close fasteners-peel strength before and after repeated closing
  • GB/T 3903.21 Footwear-test methods for accessories: touch and close fasteners-peel strength before and after repeated closing

Main Technical Specifications

Model AT-F3004
Control Method Touch screen controller or LCD + Key controller
Upper Driven Drum Diameter 162.5 ± 0.5 mm
Lower Driving Drum Diameter 160 ± 0.5 mm
Drum Width 70 mm
Clamp Slot Width 4 mm, Length 55 ± 2 mm
Test Speed 60 ± 5 rpm / min or 72 rpm / min
Reversal Intervals 30 ± 5 s
Sample Pressure 1.0 ± 0.1 N / mm
Counter LCD display, 0 ~ 999,999
Accessories Test load, rollers

Velcro Fatigue Testing Machine Features

  • The user can preset the test cycle, and the machine stops once it reaches the preset cycles.
  • The precision motor makes sure that the Velcro Fatigue tester runs stable.
  • LCD digital controller Achieves accurate control of the testing process.
  • The operation and maintenance of this hook and loop fastener fatigue tester are simple.

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