DIN EN 1773-1997 Textiles - Fabrics - Determination of width and length German version EN 1773 1996《纺织物 织物平面结构 宽度和长度测定》.pdf

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1、DEUTSCHE NORM March 1997 I I Textile fabrics English version of DIN EN 1773 Determination of width and length DIN EN 1773 ICs 59.080.30 Descriptors: Textiles, fabrics, testing, width, length. Textilien - Textile Flchengebilde - Bestimmung der Breite und Lnge Supersedes DIN 53851, February 1975 editi

2、on, and DIN 53881, February 1976 edition. European Standard EN 1773: 1996 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 248. The responsible German body involved in its preparation was the Normenausschu Materialpr

3、fung (Materials Testing Standards Committee). DIN IS0 10012-1 is the standard corresponding to International Standard IS0 10012-1 referred to in clause 2 of the EN. Amendments DIN 53851, February 1975 edition, and DIN 53881, February 1976 edition, have been superseded by the specifications of EN 177

4、3. Previous editions DIN DVM 3801 Sheet 4= DIN 53801 Sheet 4: 1937-1; DIN 53851: 1955-02, 1963-11,1975-02; DIN 53881: 1963-12, 1976-02. EN comprises 6 pages. O No part of this standard may be reproduced without the prior permission of DIN Deutsches Institut fr Normung e.V., Berlin. Beutb Verlag GmbH

5、, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN EN 1773: 1997-03 Sales No. 11 06 11.97 English price group 06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1773 December 1996 ICs 59.080.30 Descriptors: Textiles, fabrics, testing, width, length. Englis

6、h version Text i I es Fabrics Determination of width and length Textiles - toffes - Dtermination de la largeur et de la longueur Textilien - Textile Flchengebilde - Bestimmung der Breite und Lnge This European Standard was approved by CEN on 1996-11-25. CEN members are bound to comply with the CENKE

7、NELEC 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 Central Secretariat or to any

8、 CEN member. The European Standards exist 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 the official versions. CEN

9、 members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Por- tugal, Spain, Sweden, Switzerland, and the United Kingdom. GEN European Committee for Standardization Comit Europen de Normalisati

10、on Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-IO50 Brussels O 1996. GEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 1773: 1996 E Page 2 EN 1773:1996 Foreword This Draft European Standard has been pr

11、epared by Technical Committee CENTTC 248 “Textiles and textile products“, the secretariat of which 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 June 1997, and conflicting nation

12、al standards shall be withdrawn at the latest by June 1997. According to the CENICENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland,

13、 Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Annex A is informative. Page 3 EN 1773 : 1996 1 Scope This European Standard specifies a method for the determination of length and width of textile fabrics that are in a tension-free relaxed state.

14、 The test is applicable to textile fabrics of full width, folded lengthwise down the middle, or in tubular form, but no longer than 1 O0 m. This standard does not specify a method to determine or describe construction defects or other defects. This standard is not applicable to coated fabrics. 2 Nor

15、mative References This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions o

16、f any of these publications apply to this European Standard only when incoroporated in it by amendment or revision. For dated references the latest edition of the publication referred to applies. EN 20139 Textiles - Standard atmospheres for conditioning and testing (IS0 139:1973) IS0 1 O01 2-1 Quali

17、ty assurance requirements for measuring equipment - Part 1 : Metrological confir- mation system for measuring equipment 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 Length of piece The distance between the beginning and the end of the sample in the lengthwise

18、 or machine direction. 3.2 Overall width of piece The distance between the outermost edges of the sample measured perpendicular to the longitudinal edges. 3.3 Usable width of piece The width of the fabric excluding any selvedge materials, marks, pin-holes or other non-homogeneous areas of the fabric

19、. NOTE: For some end uses or specifications the usable width may be defined differently, as agreed between the interested Darties. 4 Principle A sample of textile fabric, conditioned in the relaxed state in the standard atmosphere for testing, is laid out on a smooth surface. A calibrated rule is us

20、ed to determine the length and the width of the piece. For determination of the length of a sample it may be necessary to measure partial lengths. The total length,of the sample then results from the sum of length of these partial lengths. 5 Sampling Samples shall be selected either in accordance wi

21、th the procedure laid down in the material specification for the fabric or as agreed between the interested parties. Page 4 EN 1773 : 1996 6 Apparatus 6.1 Calibrated rule, conforming to IS0 10012-1, and having a length greater than the width of the fabric, graduated in millimetres. 6.2 Measuring tab

22、le having a smooth flat surface and a width and length greater than the fabric when placed for measuring. The table shall be at least 3 m in length to allow measuring of samples with a length greater than 2 m. Along the two longest parallel sides of the table consecutive markers are placed at disian

23、ces of 1 m * 1 mm. The distance of the first marker from the nearest end of the table shall be 0.5 m to allow proper positioning of the sample. For long pieces to be measured in partial lengths the whole piece shall be placed on the table during the measurement of the individual length intervalssee

24、annex A). 7 The atmospheres for preconditioning, conditioning and testing shall be as specified in EN 201 39. Atmosphere for conditioning, testing and relaxation The fabric shall be conditioned and measured in the relaxed state. To ensure the relaxed state, the sample shall be laid out, free of tens

25、ion, either in its full width, folded down the middle along the length of fabric, or tubular, depending on the make up of the sample. NOTE: An illustration of handling of fabrics of great length is given in annex A. To ensure if the relaxed state is reached, place preliminary markers at two interval

26、s along the fabric. The sample shall be considered adequately relaxed if the difference between length measurements at time intervals of 24h is less than 0,25 %. If knitted fabrics are to be tested not as received but after special treatment this shall be apreed by the interested parties and shall b

27、e stated in the test report. 8 Procedure 8.1 General The sample shall be laid out flat on the surface of the measuring table. The test shall be performed on the fabric as made up in full width or folded down the middle along the length of the fabric or in tubular form. Avoid distortion of the fabric

28、 in its own plane. 8.2 Measuring the length of the sample 8.2.1 Samples shorter than 1 m Samples having a length of less than 1 m shall be measured by placing the rule (see 6.1) parallel to the longitudinal edges to the nearest millirnetre. Repeat the procedure of measuring the full length of the sa

29、mple three times at different places across the width of the fabric. 8.2.2 Samples longer than 1 m Mark the fabric at the edges. Place second markers at a distance of 1 m using the markers on the table as stated in 6.2. Mark the entire sample in consecutive increments of 1 m. The residual length of

30、less than 1 m is measured using the calibrated rule described in 6.1. The total length of the sample is the sum of the 1 m increments plus the residual length. Repeat the procedure three times with new marker strokes being placed on the sample if necessary. The interested parties shall agree in adva

31、nce whether the connecting strips at the beginning and the end of the sample are to be included in the length measurement. Page 5 EN 1773: 1996 8.3 Measuring the width of the sample The width of fabrics made up full width is the distance between the outermost edges measured perpendicular to the edge

32、s. The width of a fabric folded vertical down the middle is double the distance from the folded edge to the congruently superimposed outer edges, measured perpendicular to the folded edge. If the outer edges are not superimposed congruently, the measurement shall be made from the folded edge to the

33、edge nearest to it. This shall be stated in the test report. The width of a fabric in tubular form is the distance from edge to edge measured perpendicular to the edges when the sample is positioned properly and the edges are kept flat. Measure the width of the sample distributed uniformly over the

34、entire length of the sample. For Sample length up to 5 m: 5 determinations; Sample length up to Sample length more than 20 m: at least 10 determinations at distances of 2 m; 20 m: 1 O determinations; If the width of the fabrics is not to be measured as the overall width from edge to edge then the pa

35、rties interested in the result shall agree on the definition of the usable width. This shall be stated in the test report. If the usable width is to be measured, then the measurements shall be made according to the overall width, but avoiding any selvedge etc. described in 3.3. The usable width may

36、be defined differently because of variations in weaving construction or because of special requirements for the manufacturing of garments or other made-up products. 9 Calculation and expression of results 9.1 Length of piece Calculate the arithmetic mean of the length of the sample in metre to the n

37、earest centimetre. If required, calculate the coefficient of variation in percent to the nearest 1 YO and the 95% confidence limits to the nearest centimetre, or state the results of the individual measurements in metre to the nearest centimetre. 9.2 Width of piece Calculate the arithmetic mean of t

38、he width of the sample in metres to the nearest centimetre and, if required, the coefficient of variation in percent to the nearest 1 % and the 95% confidence limits to the nearest centimetre. 10 lest report The test report shall include the following information: 1 O. 1 General information al b) c)

39、 fabric, tubular form). State, if the sample was tested after special treatment. d) The number and date of this standard and the date of test; identification of the sample and sampling procedure; configuration of the sample (made up full width, folded down in the middle along the length of the any d

40、eviation from the given procedure. 10.2 Length of sample a) arithmetic mean of the length, in metres; b) if required, the coefficient of variation, in percent, and the 95% confidence limits, in metres, or the results of the individual measurements, in metres; CI state if the length of the edges vari

41、es, e.g. because of stretching of one edge and if connecting strips are included in the measurement. Page 6 EN 1773 : 1996 10.3 Width of sample a) agreed width; b) c) the 95% confidence limits, in metres; d) State if the width is measured as overall width or as usable width or as some other defined

42、and arithmetric mean of the width, in metres; if required, the coefficient of variation, in percent, and the minimum width, in metres. Annex A (informative) Arrangement for conditioning, relaxing and measurement A convenient and effective method of arranging a long piece of fabric for conditioning s

43、o that it is free from applied tension and is well exposed to the conditioning atmosphere is to unroll the piece and lay it in loose corrugated folds of suitable size. (See figure A.l) During marking and measuring, it is essential that the piece of fabric whose width is being determined should be fr

44、ee from tension as it lies on the measuring table. To achieve this, it has been found convenient to cuttle- fold (see figure A.21 the ends of the piece which extend beyond the portion being measured, thus producing a stack of fabric at each end of the portion being measured. If the measuring table i

45、s too short to enable this method to be used, supplementary tables may be used at each end of the measuring surface, provided that such extra tables are exactly the same height and at least as wide as the main table, and that they are so placed as to form (with the measuring table) a continuous rectangular surf ace. Figure A.l: Loose folding Figure A.2: Cuttle-folding