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Introduction
Zipper reciprocating tester is used to measure the zipper performance of products with zippers, such as clothes, textiles, auxiliary materials, bags, shoes, etc. During the test, the zipper reciprocates on the tester at a constant speed of 30 times per minute to the set number of times by the horizontal and vertical tension to test the fatigue and durability of the zipper.

The instrument consists of a set of clamp, reciprocating motion transmission system and display system. The instrument makes reciprocating movement of the sample at 30 times/min,and the speed can also be customized (20 times/min, 25 times/min, 35 times/min, and 40 times/min). The instrument stroke is 75 mm, the transverse width is test fixture 25 mm wide, and the vertical width is 10 mm wide. The clamping surface tooth profiles an angle of 60 °, and the total weight of verticalclamping device is 0.28 0.34 kg. The test range of zipper size is within 3.5-12mm.

The instrument is widely used to evaluate the durability and service life of zippers with various length in the fields of clothing accessories, luggage industry, shoe materials, etc., and provides data basis for guiding the development of materials and helping users to effectively evaluate the performance of the products.

The test result can predict the service life span of zippers that reciprocate by the vertical and horizontal tension in actual use process. Adjustable test spacing can meet more test requirements. Knob-type clamp with standard tooth surface can quickly and accurately hold the sample, with automatic counting function, convenient and quick.

Features
1. The counter adopts LCD display, 0~ 999,999 continuous adjustable;
2. Adjust zipper stroke according to different standard;
3. Automatic stop and alarm for 10S upon reaching the set number of times;
5. One set each of specially manufactured large and small zipper head fixtures, for the convenience to used zipper heads in different specification.
6. The positioning block ensures that the transverse pull clamp maintains tranversely tight at 10° at the beginning of clamping.
7.It has point adjustment function and fine tuning handwheel to facilitate the adjustion of installation position;
8.The zipper clamp is made of stainless steel

QB/T 2171/2172/2173Light industry standards: metallic zipper/plastic zipper/nylon zipper
BS 3084British standards: Slide fasteners (Zips) specification
AS 2332Australian standards: zipper
NF G91-005Slide fasteners. Test methods. Determination of mechanical properties.
JIS S3015Slide fasteners
DIN 3419-1Slide fasteners - Part 1: Technical delivery conditions
SATRA TM50slide fasteners repeated opening closing, under load