AS/NZS 1301.400S:1998

1 - AS/NZS 1301.400s:1998 METHODS OF TEST FOR PULP AND PAPER - TEARING RESISTANCE OF PAPER
6 - Contents
7 - Foreword
8 - Introduction
9 - 1 Scope
9 - 2 Normative references
9 - 3 Principle
9 - 4 Apparatus
9 - 4.1 An approved tear tester
11 - 4.2 Test piece cutter
11 - 5 Preparation of test pieces
11 - 6 Procedure
13 - 7 Calculation
13 - 8 Report
14 - 9 Test accuracy
15 - Annex A - Adjustment and maintenance of the tear tester
15 - A.1 Inspection
15 - A.2 Adjustment
16 - A.2.1 Alignment of clamping jaws
16 - A.2.2 Levelling
16 - A.2.3 Zero adjustment
17 - A.2.4 Pendulum friction
18 - A.3 Pointer friction (applicable to tear testers fitted with a coaxially mounted pointer)
18 - A.4 Tearing length
18 - A.5 Additional tests for modern tear testers
20 - Annex B - Calibration of the potential energy tear tester
20 - B.1 Apparatus
20 - B.1.1 Sheet of plate glass
20 - B.1.2 Steel rule
20 - B.1.3 Device for holding the pendulum
20 - B.1.4 Set of calibration weights
20 - B.2 Procedure
21 - B.3 Calculation of results
21 - B.4 Alternate procedure
22 - B.5 Weights with standard tear resistance values
22 - B.6 Derivation of formula
23 - Annex C - Kinetic energy tear testers
23 - C.1 Equation for determining tearing resistance
24 - C.2 Calibration of the kinetic energy tear tester
24 - C.2.1 Apparatus
24 - C.2.1.1 Rigid, flat, level surface
24 - C.2.1.2 Height gauge
24 - C.2.1.3 To loading balance
24 - C.2.1.4 Pendulum support mechanism
24 - C.2.1.5 Pendulum securing and releasing mechanism
24 - C.2.2 Procedure
25 - C.2.3 Calculation
26 - Annex D - Bibliography

This standard prescribes the procedure to be used to determine the tearing resistance of paperand certain classes of paperboard.

This standard prescribes the procedure to be used to determine the tearing resistance of paper and certain classes of paperboard.

First published in Australia as AS P1.P400m-1962.
Revised and redesignated AS 1301.P400m-1973.
Revised and redesignated AS 1301.400s-1991.
First published in New Zealand as Appita P400s:1955.
Second edition 1959.
Revised and redesignated Appita P400m:1962.
Second edition 1973.
Revised and redesignated NZS/AS 1301.400s:1991.
Jointly revised and designated AS/NZS 1301.400s:1998.