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This standard is issued under the fixed designation D ; the 1 These test methods are under the jurisdiction of ASTM Committee D13 on. Buy ASTM D Standard Test Methods for Strength Tests for Zippers from SAI Global. ASTM D Standard Test Methods for Strength Tests for Zippers.

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Resistance to Twist of Pull and Slider. Turn the testing drum clockwise until the clearance between the lug and the pull trunnions is taken up, and then set the dial to zero. You can choose the one which is most convenient or cost effective for you. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series.

Locate and lock the slider midway between the ends of the chain.

The loading device shall be a torque gage, torque wrench or other appropriate device of the adjustable slip type capable of applying a torsional force and having an accuracy of Apply an increasing load until the element slips off the end of the cut bead or until other failure occurs.

If preferred, the use of a CRT tensile testing machine is permitted. Apply an increasing load until the stop or stops pull off, until the tape breaks, or until failure of some other kind occurs.

The enumerated test methods do not provide for the evaluation of all zipper properties. The compression testing machine shall be designed to permit the application of a load to the platens at a rate-of-traverse of approximately 13 mm 1? The components of In addition the amount of permanent twist imparted to the slider pull or other permanent damage or deformation may be noted. Read the dial and record the amount of permanent twist.

ASTM D – 07() Standard Test Methods for Strength Tests for Zippers

The X-ray fluorescence analyzer is mainly used for screening the content of chemical elements in the semi-finished products, finished zippers and certain raw materials, including lead, cadmium, chromium, mercury, arsenic, barium, antimony and selenium as well as analyzing the unknown components in the samples.

The effects of operability of the zipper is then determined.

No one test determines the suitability of a zipper for a specific end use. The components of variance expressed as coefficients of variation, calculated as percentage of the average were: Set the number of test cycle.

ASTM D2061 Zipper strength Testing Equipment

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Individual reprints single or multiple copies of this standard may be obtained by astj ASTM at the above address or at phonefaxor service astm. Resistance to Pull-Off of Slider Pull. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Significance and Use 4. The precision and bias of Test Methods D for testing zipper operability are as speci? To measure force strength of zipper, test items: They can be used as aids in the evaluation of zippers without the need for a thorough knowledge of zippers.

If the device in Fig. Zipper Reciprocating Testing Instrument The zipper reciprocating testing instrument is used for testing the anti-fatigue performance of the zippers through the reciprocating opening and closing of the zipper sample under the vertical and lateral tension. Apply the load speci? Leave the diamond spacer in place throughout the test.

Last previous edition approved in as D — Open the chain by pulling the stringer apart all the way to the bottom stop. Dimension 1 and 2 A 2. Position the pull in the clamp, aligning the front surface of the clamp with the midpoint of the pull as shown in Fig.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

They can be used as aids in the evaluation of zippers without the need for a thorough knowledge of zippers.

Precision and Bias Test modular design, open data management, can realize load, deformation, displacement, variable speed control.

Again read the measurement on the dial indicator.

The maximum rotation in We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, environmental and qstm chambers, furnaces, baths and custom solutions for unique applications. The ends of the front jaws shall be at least 25 mm 1 in. The slider may be held? Two specimens are required.

Summary of Test Methods The test methods appear as follows: