1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 718 : 1996 The European
2、 Standard EN 718 : 1995 has the status of a British Standard ICS 91.060.30; 91.180 N No o c co op py yi in ng g w wi it th ho ou ut t B BS SI I p pe er rm mi is ss si io on n e ex xc ce ep pt t a as s p pe er rm mi it tt te ed d b by y C Co op py yr ri ig gh ht t L La aw w Resilient floor coverings
3、Determination of mass per unit area of a reinforcement or a backing of polyvinyl chloride floor coveringsThis British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on
4、15 May 1996 BSI 1996 The following BSI references relate to the work on this standard: Committee reference PRI/60 Draft for comment 92/40312 DC ISBN 0 580 25719 3 BS EN 718 : 1996 Amendments issued since publication Amd. No. Date Text affected Committees responsible for this British Standard The pre
5、paration of this British Standard was entrusted to Technical Committee PRI/60, Resilient floor coverings, upon which the following bodies were represented: British Adhesives and Sealants Association British Railways Board British Resilient Flooring Manufacturers Association British Rubber Manufactur
6、ers Association Ltd. Consumer Policy Committee of BSI Contract Flooring Association Cork Industry Federation Department of the Environment (British Board of Agreement) Department of the Environment (Building Research Establishment) Institute of Chartered Arbitrators Royal Institute of British Archit
7、ects Wood Panel Products Federation BSI 1996 i BS EN 718 : 1996 Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope 2 2 Principle 2 3 Apparatus and materials 2 4 Sampling and preparation of test pieces 2 5 Procedure 2 6 Calculation and expression of result
8、s 2 7 Test report 2ii BSI 1996 BS EN 718 : 1996 National foreword This British Standard has been prepared by Technical Committee PRI/60, and is the English language version of EN 718 : 1995 Resilient floor coverings Determination of mass per unit area of a reinforcement or a backing of polyvinyl chl
9、oride floor coverings, published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunity from legal obligations.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central S
10、ecretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN 718 : 1995 E EUROPEAN STANDARD EN 718 NORME EUROPE ENNE EUROPA ISCHE NORM December 1995 ICS 91.060.30 Descripto
11、rs: Floor coverings, supports, armatures, polyvinyl chloride, tests, determination, mass English version Resilient floor coverings Determination of mass per unit area of a reinforcement or a backing of polyvinyl chloride floor coverings Reve tements de sol re silients De termination de la masse surf
12、acique de larmature ou du support dun reve tement de sol a base de polychlorure de vinyle Elastiche Bodenbela ge Bestimmung der fla chenbezogenen Masse von Versta rkung oder Ru cken von Bodenbela gen aus Polyvinylchlorid This European Standard was approved by CEN on 1995-11-26. CEN members are bound
13、 to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Cen
14、tral Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as
15、 the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 718 : 1995 BSI 1996 Foreword This European
16、 Standard has been prepared by the Technical Committee CEN/TC 134, Resilient and textile floor coverings, of which the secretariat is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by J
17、une 1996, and conflicting national standards shall be withdrawn at the latest by June 1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
18、Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 1 Scope This European Standard specifies a method for determining the mass per unit area of a reinforcement or backing of a polyvinyl chloride-based floor covering. 2 Principle The mass of the reinforcement
19、 or backing of test pieces of known dimensions is measured after the polyvinyl chloride material has been removed by submersion in tetrahydrofuran. 3 Apparatus and materials 3.1 A balance, accurate to 0,05 g. 3.2 A holder, for test pieces. 3.3 A thermostatically controlled ventilated oven, capable o
20、f maintaining a temperature of (80 2) C 3.4 Solvent, tetrahydrofuran. WARNING. Tetrahydrofuran is a dangerous solvent. Safety precautions are essential when dealing with this solvent. 4 Sampling and preparation of test pieces Take a representative sample from the available material. Take five test p
21、ieces, each of area (100 0,5) cm 2 ,a t equal distances across the sample, the distance between the outer edge of the sample and the nearest edge of the test piece being at least 100 mm. 5 Procedure Submerge the test pieces for 24 h in a bath of tetrahydrofuran (3.4) at approximately 20 C. Hold the
22、test piece at a sufficient distance from the bottom of the bath. Remove and immerse several times in clean tetrahydrofuran until no trace of the polyvinyl chloride part remains. Allow the test pieces to dry for 24 h at (80 2) C in the ventilated oven. Cool and weigh to within 0,05 g. 6 Calculation a
23、nd expression of results Calculate the mass per unit area of the reinforcement or backing for each test piece and the mean value. Express the results in g/m 2 rounded to the nearest 5 g/m 2 . 7 Test report The test report shall include the following information: a) a reference to this standard, i.e.
24、 EN 718; b) a complete identification of the product tested, including type, source, manufacturers reference numbers; c) the previous history of the sample; d) the mean, maximum and minimum values for mass per unit area of the fibrous backing or reinforcement; e) any deviation from this standard whi
25、ch may have affected the results.blankBSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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