1、BRITISH STANDARD BS ISO 24336:2005 Laminate floor coverings Determination of thickness swelling after partial immersion in water ICS 97.150 BS ISO 24336:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 April 2005 BSI 12 April 2005 ISBN
2、 0 580 45769 9 National foreword This British Standard reproduces verbatim ISO 24336:2005 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PRI/60, Resilient floor coverings, which has the responsibility to: A list of organiza
3、tions represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”,
4、 or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer
5、immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate
6、them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since p
7、ublication Amd. No. Date Comments Reference number ISO 24336:2005(E) OSI 5002INTERNATIONAL STANDARD ISO 24336 First edition 2005-03-01 Laminate floor coverings Determination of thickness swelling after partial immersion in water Revtements de sol stratifis Dtermination du gonflement en paisseur aprs
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13、05IS:63342 O5002(E) I SO 5002 All irthgs ersedevr iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. E
14、ach member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internati
15、onal Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standa
16、rds adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject
17、 of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 24336 was prepared by Technical Committee ISO/TC 219, Floor coverings. BSISO24336:2005blank 5002:63342OSISBINTENRATIONAL TSANDADR IS:63342 O5002(E)I SO 5002 All irthgs ersedevr 1Laminate floor cov
18、erings Determination of thickness swelling after partial immersion in water 1 Scope This International Standard specifies a test method for the determination of thickness swelling of laminate floor-covering elements after partial immersion in water. The testing is destructive and is mainly intended
19、to evaluate the behaviour of the laminate floor-covering element in contact with water. Possible pre-attached soft backing material, sub-layers or any other material integrated at the underside of the floor-covering element are not included in the test and should therefore be removed before testing.
20、 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13329:2000, Laminate f
21、loor coverings Specifications, requirements and test methods 3 Principle Samples of laminate floor-covering elements are partially immersed (50 mm) in water, at 20 C, during 24 h. The resulting thickness swelling is determined. 4 Sampling 4.1 Cutting the test specimens Cut four test specimens, measu
22、ring (150 1) mm (50 1) mm out of a laminate floor-covering element. Take two samples in the direction parallel to one edge of the element, and two samples in the direction perpendicular to this first direction. Divide the element virtually into two equal parts, along both directions of the element.
23、Take both sets of samples from each half of the element, in both directions. Take the samples, if possible, at least 20 mm away from both edges of the element. If this is impossible for some of the samples, the distance from the edge might be less than 20 mm, but in any case, the joint profile shall
24、 be cut away completely see Figure 1a). If the width direction of the laminate floor-covering element is less than 150 mm, without taking into account the joint profile, all four test specimens may be taken in the length direction if possible see Figure 1b). In the case that this is also impossible,
25、 the maximum number of samples shall be taken out of one floor-covering element see Figure 1c). BSISO24336:2005IS:63342 O5002(E) 2 I SO 5002 All irthgs ersedevra) b) c) Figure 1 Different options for sampling of specimens 4.2 Preparation of the test specimens Before testing or conditioning of the te
26、st specimens, any pre-attached soft backing material, sub-layer or any other material integrated at the underside of the floor-covering element shall be removed. Normally all laminate floor coverings contain a backing (balancing) layer, according to the definition in EN 13329. This backing layer sha
27、ll be kept. Other pre-attached material is removed using a sharp knife or other sharp edge, either completely or at least to a minimum distance of 75 mm from the lower edge of the specimen (see drawing of a longitudinal cross-section through a specimen in Figure 2). Take particular care to remove an
28、y glue or adhesive used to bond the pre-attached material to the backing. Dimensions in millimetres Key 1 surface layer 2 substrate (core) 3 backing 4 pre-attached material Figure 2 Removal of pre-attached material from a specimen 5 Conditioning Test specimens are measured in the received state. For
29、 type approval or verification purposes, the test specimens shall be stabilized to a constant mass in an atmosphere of (23 2) C and (50 5) % relative humidity. Constant mass is considered to be reached when the results of two successive weighing operations, carried out at an interval of 24 h, do not
30、 differ by more than 0,1 % of the mass of the test specimens. BSISO24336:2005IS:63342 O5002(E) I SO 5002 All irthgs ersedevr 36 Apparatus 6.1 Water bath, large enough to ensure a constant water level, and built to be capable of maintaining the water temperature at (20 1) C during the testing time. 6
31、.2 Micrometer, with flat and parallel circular measuring surfaces of diameter at least 5 mm, with an accuracy of 0,05 mm. 7 Test procedure Determine the initial thickness (t in ) of the test specimens perpendicular to the extreme edges at the points as indicated in Figure 3. Measure the thickness of
32、 the part of the sample that is going to be put under water and, if relevant, has had its pre-attached material removed. Dimensions in millimetres Key 1 measuring point 2 samples taken in the length direction 3 samples taken in the width direction Figure 3 The six measuring points indicated by BSISO
33、24336:2005IS:63342 O5002(E) 4 I SO 5002 All irthgs ersedevrPlace the available test specimens in the water bath as illustrated in Figure 4. Remove the test specimens after 24 h 15 min, and dry them immediately with a towel. Within 5 min after the removal from the water bath, determine the final thic
34、kness (t fin ) of the test specimens at the measuring points where the initial thickness has been determined. Dimensions in millimetres Figure 4 The four specimens in the water bath 8 Calculation and expression of results Record all values and determine the differences between initial and correspond
35、ing final thickness values. Calculate, for each pair of values, the thickness swelling in percent according to the formula: () fin in in 100 tt t where t inis the initial thickness, in millimetres: t finis the final thickness, in millimetres. Express the average thickness swelling as the result, usi
36、ng the individual thickness swelling results from the measuring points, in percent to the nearest 0,1 %. 9 Precision The precision of the method is not known. When interlaboratory data become available, the precision statement will be added in subsequent revisions of this International Standard. 10
37、Test report The test report shall contain at least the following information: a) reference to this International Standard (ISO 24336); b) name and address of the laboratory that performed the test; c) name and address of the company requesting the test; BSISO24336:2005IS:63342 O5002(E) I SO 5002 All
38、 irthgs ersedevr 5d) name (brand, if any) and the type of the laminate floor covering tested; e) sampling procedure and date of delivery of the test specimens; f) date and period of the test(s); g) climatic conditions applied to the test specimens prior to testing; h) climatic conditions within the
39、test room during the test; i) test result(s) expressed in percent rounded to the nearest 0,1 %; j) any deviations from this International Standard which might have affected the test results. BSISO24336:2005BS ISO 24336:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution B
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