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