BS 4420:1990

Superseded

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Method for determination of the Bendtsen roughness of paper and board

Available format(s)

Hardcopy , PDF

Superseded date

31-01-2014

Language(s)

English

Published date

31-08-1990

Publisher

British Standards Institution

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Definition
4 Principle
5 Apparatus
6 Sampling
7 Conditioning
8 Preparation of test pieces
9 Procedure
10 Expression of results
11 Test report
Annex
A Care and maintenance of Bendtsen testers
B Calibration of capillary tubes and variable-area
flowmeters
Figures
1 Circuit diagram of test apparatus
B.1 Soap-bubble meter

Describes a method for determining the roughness of paper and board using the Bendtsen apparatus. Applicable to paper and board which have Bendtsen roughness values between about 50 ml/min and 1200 ml/min. Not suitable for soft papers which allow the land to make a significant impression on the surface or for high air permeance papers which allow a significant flow of air to pass through the sheet, or for papers which will not lie flat under the heavy metal annulus. Covers normative references, definition, principle, apparatus, sampling, conditioning, preparation of test pieces, procedure, expression of results and test report.

Committee	PAI/11
DevelopmentNote	Supersedes 88/45969 DC and BS 4420(1969) (08/2005)
DocumentType	Standard
Pages	12
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS ISO 8791-2:2013
Supersedes	BS 4420:1969

ISO 8791-1:1986

Paper and board — Determination of roughness/smoothness (air leak methods) — Part 1: General method

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BS 4420:1990

Method for determination of the Bendtsen roughness of paper and board

Table of Contents

Abstract

General Product Information

Standards Referencing This Book

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