1、STD-CEN EN 12h5Y-Z-ENGL 1778 3404589 0388930 b37 RATIFIED EUROPEAN TEXT I EN12654-2: 1998 European Standards only exist formally as national transpositions (Le. a BS EN for the UK) of a commonly agreed “ratified” text. This document is a ratified text which will shortly be published as a BS EN. It i
2、s being made available in advance of its formal publication to give interested parties early access to the technical information which the BS EN will contain. When the BS EN is formally published it will be supplied to you automatically, without any additional charge. Purchasers of this ratified tex
3、t should be aware of the following limitations when using the document. O The BS EN may contain additional information in the national foreword or national annex. O Full rights conferred by compliance with the standard may only be granted by reference to the formal national transposition of the text
4、 as a BS EN. This ratified text was approved by CENCENELEC in its three official languages on the date given below. Under CENEENELEC rules, BSl is obliged to publish its national transposition within six months of this date. This ratified text was approved on 1998-10-30 NO COPYING WITHOUT BSI PERMIS
5、SION EXCEPT AS PERMITTED BY COPYRIGH LAW STD.CEN EN 32b54-2-ENGL 1978 E3404587 0388933 575 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12654-2 November 1998 ICs 59.100.10 Descriptors: textile glass, textile glass yams, specifications, physical properties, visual examination, appearance, def
6、ects, sampling, storage, packing, acceptability English version Textile glass - Yarns - Part 2: Methods of test and general specifications Verre textile - Fils - Partie 2: Mthodes dessais et specifications generales Textilglas - Garne - Teil 2: Prfverfahren und allgemeine Anforderungen This European
7、 Standard was approved by CEN on 30 October 1998. CEN members are bound to comply with the CENCENELEC Intemal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibiiographical references concern
8、ing such national standards may be obtained on application to the Central Cecretanat 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 lan
9、guage and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland. Italy, Luxembourg, Nethedands, Norway, Portugal, Spain, Sweden,
10、Switzeiiand and United Kingdom. EUROPEAN COMMTiEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart. 36 E-1050 Brussels 0 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Member
11、s. Ref. No. EN 12654-2:1998 E Page 2 EN 12654-2:1998 Contents 1 Scope 5 2 Normative references 5 3 Page List of properties . 5 3.1 Physical properties 6 3.2Visuai properties 6 4 General requirements . 7 4.2 Packaging 7 4.3Storage 8 Sampling and the criteria for the acceptance of a lot . 8 A.l Normal
12、 control . 9 A.2Controi with reduced severity 1 0 Annex B (informative) Bibliography . 11 4.1 Connecting tail . 7 5 Annex A (normative) Sampling plan : Method by attributes . 9 STD.CEN EN LZbSY-Z-ENGL 1798 3404589 0L889L3 348 Page 3 EN 1 2654-21998 Foreword This European Standard has been prepared b
13、y Technical Committee CEN/TC 249 “Plastics“, the secretariat of which is held by IBN. 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 May 1999, and conflicting national standards shall be withdraw
14、n at the latest by May 1999. According to the CENKENELEC Intemal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembour
15、g, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Page 4 EN 12654-211 998 Introduction This european standard is one part of EN 12654 which is structured as follows : EN 12654 “textile glass - Yarns“ - - - Part 1 : Designation ; Part 2 : Method of test and general
16、specification ; Part 3 : General requirements for general applications. Page 5 EN 12654-2: 1998 1 Scope This European Standard provides the list of properties and the general requirements for yams based on continuous filament textile glass (single yams, folded yams) and excludes textured yams and ya
17、ms based on staple fibre, rovings and pre-impregnated yams. 2 Normative 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 hereaft
18、er. For dated references, subsequent amendments to or revisions of any of these publications apply to this european standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN IS0 1886, Reinforcement fibms - Sam
19、pltng plans applicable to received batches (IS0 1886:1990). EN IS0 1889, Reinforc8ment yams - Determination of linear density (IS0 1889:1997J EN IS0 1890, Reinforcement yams - Determination of twist (IS0 7890: 7997J EN IS0 3344, Reinforcement products - Determination of moisture content (IS0 3344: 1
20、9971. IS0 1807, Textile glass - Determination of the combustible matter content. IS0 1888, Textile glass - Staple fibres or filaments - Determination of average diameter. IS0 2059-1, Sarnpltng procedures for inspection by attributes - Part i : Sampltng plans indexed by acceptable quaiiy le vel (A QL
21、) for lot-by-lot inspection. IS0 3341 , Textile glass - Yarns - Detemination of breaking force and breaking elongation. IS0 3343, Textile glass - Yarns - Detemination of twist balance index. IS0 3951, Sampling procedures and charis for inspection by variables for percent non conforming. 3 List of pr
22、operties The list of properties with the applicable test method shall be considered as a guide for the selection of the properties and limits which will be applicable to the yam families in EN 12654-3 STD-CEN EN lt2b54-2-ENGL 1798 3404587 OL889Lb 057 Page 6 EN 12654-2: 1998 3.1 Physical properties T
23、able 1 : Physical properties Properties Filament diameter (pm) Linear density (tex) Combustible material (size content) (”/) Twist (TPM) Moisture content (%) Breaking force (N) or Tenacity (cN/tex) Test methods IS0 1888 EN IS0 1889 IS0 1887 EN IS0 1890 EN IS0 3344 IS0 3341 Remarks By default : One s
24、pecimen per bobbin Away from outer migration zones 1) By default : One determination per bobbin Test to be made in centre of the bobbins 1) Unless particularly stated in the manufacturers specification, the test specimens for this test should be taken from between the first and last 500 g of the bob
25、bin. 3.2 Visual properties Each bobbin containing one of the following faults will be considered as non-conforming. 3.2.1 3.2.1.1 surface of the package. Limits other than 100 broken filaments may be specified for some specific yams. 3.2.1.2 Dirty yarn. 3.2.1.3 Slubs or fuzz balls. 3.2.1.4 3.2.1.5 E
26、XAMPLES 3.2.1.6 Incorrect number of ends. 3.2.1.7 wound together). 3.2.2 3.2.2.1 3.2.2.2 Sloughed yarn. 3.2.2.3 bobbin. Visible faults in the yarn Yam which is hairy (if more than 100 broken filaments observed on the complete exterior Cut or partially cut yarn. Faulty gluing (faulty splices) : Where
27、 splices are permitted. Dirty splice, incomplete (ends not bonded), uneven glue, too long. Uneven doubling (loops created by a difference in length between two or more yarns Visible faults in the wound package Shiny yarn (lack of size). Flared package (bulging package) : If it goes beyond the outer
28、limit of the flange of the STD.CEN EN 12b54-2-ENGL 1998 3404589 0388437 T93 Page 7 EN 12654-2: 1998 3.2.2.4 and the deepest recess form this line. Undercut package : ie more than a 5 mm distance between the vertical side of the bobbin 3.2.2.5 3.2.2.6 3.2.2.7 3.2.2.8 3.2.2.9 3.2.2.1 O 3.2.2.1 1 3.2.2
29、.1 2 3.2.2.1 3 3.2.2.1 4 3.2.2.15 3.2.2.16 3.2.2.17 3.2.2.1 8 3.2.2.19 Loops (within the body of the wound package). Loops at the bottom of the wound package. Damaged supports (tubes or bobbin, cut, bruised or broken). Cracked or partially separated wound package. Loose yam or waste yarn. Foreign ma
30、tter wound into the package. Protruding yarn (generally, either a bad joint or a bad start to winding). Entrapped end (wedged yarn). Overfilled package (support too full). Package to soft. Package too hard. Defective of dirty connecting (or transfer) tail. Stains. Badly built package. Loops emerging
31、 from the flanges, from the cross-overs or windings on the end faces (without flanges). 3.2.2.20 Incorrect or missing identification. 3.2.2.21 handling afer manufacture). Damaged package (frayed package, deformation, knock having taken place during 3.2.2.22 Clubs, fuzz balls. 4 General requirements
32、4.1 Connecting tail Textile yarn may be made with or without a connecting (or transfer) tail. In the case where the connecting tails are intended, the maximum proportion of bobbins without connecting tails or broken connecting tails may not exceed 10 %. 4.2 Packaging Each bobbin must be identified o
33、n the basis of the complete yarn designation using the code number of the size and by all other necessary means in order to avoid mixing the product. Each packaging unit (carton or pallet) must be identified legibly with the following information : - designation of the product (which comprises the c
34、ode numbers of the size and of the wound package : STD-CEN EN LZb54-2-ENGL 3998 3404589 0388738 72T Page 8 EN 12654-2: 1 998 - net weight of the packaging unit ; - name of the manufacturer ; - The type of packaging used must ensure the appropriate protection of the wound packages during storage and
35、transport without risk of damage or contamination. To this end it must take account of the humidity and temperature conditions and also the handling to which it will be subjected during transport, in intermediate storage depots and at the customers. date of manufacture (in clear or year + week numbe
36、r or year + day number) The manufacturer must specify if the pallets may be stacked and if so, to what height. 4.3 Storage Textile glass yams must be stored under cover. Avoid exposure to direct sunlight or to a heat source or to all forms of exterior pressure. The glass yarns retain their propertie
37、s for a long time when stored at a temperature between 15 “C and 30 OC and a relative humidity of 50 % to 70 YO. Other specific recommendations may be defined by the manufacturer 5 Sampling and the criteria for the acceptance of a lot The evaluation of a lot of textile glass yarn is based on the sam
38、pling that is described in the standard EN IS0 1886 or IS0 2859-1. Except otherwise specified in part 3 of this european standard, this evaluation takes into consideration the acceptable quality level (AQL) of 1,5 % for the physical properties and 2,5 % for the visual properties. Other quality level
39、s can be established for special applications. Depending on the circumstances, the control for the evaluation of a lot, may be either with a “normal“ inspection level (for the qualification of a product or in the case of problems), or with a “reduced“ inspection level, when a minimum of 3 successive
40、 controls have given an acceptable result. The control must return to the “normal“ level if the result on a reduced inspection level is negative. In the context of this standard, the sampling by ATTRIBUTES is proposed. It is also possible to use control by variables. In which case, EN IS0 1886 or IS
41、0 3951 should be consulted. Annex A includes two tables, one for normal control (EN IS0 1886) and the other for a type of reduced control (simple or double sampling)(lSO 2859-l), both of them with sampling by ATTRIBUTES. The acceptance of a lot must be judget for each property individually against i
42、ts own AQL. The non- conformities are not cumulative between the different properties. Separate from the decision on the allowable level of observed defects for each property, the lot will be accepted providing the average obtained for each property in the group of elementary units controlled, confo
43、rms to the limits given in table 1. For each type of test, reference should be made to the relevant standard for the type of conditioning required for the tests on the elementary units that are to be controlled. STD-CEN EN LZb54-2-ENGL I998 3404589 OLB919 8bb For AQL of 1,5% Page 9 EN 12654-2:1998 F
44、or AQL of 2,5 Yo Annex A (normative) Sampling plan : Method by attributes A.l Normal control Table A.l: Normal control lumber of elementary units in a lot N 2 to 8 9 to 15 16 to 25 26 to 50 51 to90 91 to 150 151 to 280 281 to500 501 to 1200 1201 to 3200 3201 to 10000 Leiter Code A B C D E F G H J K
45、L No of units taken n 2 3 5 8 13 20 32 50 80 125 200 Criterion of acceptance AQL = 1,5 Acc Rej O O O O O 1 1 2 3 5 7 1 1 1 1 1 2 2 3 4 6 8 - AQL = 2,5 Acc O O O O 1 1 2 3 5 7 10 Rej 1 1 1 1 2 2 3 4 6 8 11 NOTE 1 Acc : The lot is accepted if the number of non-conforming is I this number Rej : The lot
46、 is rejected if the number of non-conforming is 2 this number. Quality confidence limit for pa=10% NOTE 2 The values given in the column “Quality confidence limit“ corresponds to the maximum percentage defective likely to be accepted in 10 % of the cases (1 lot in 10) for a type of product character
47、ized by an AQL of 1,5 % or 2,5 %. Note that the table does not give the values for every line in the sampling plans (the uncertainties increase too much above this level). The percentage may be found in the tables of IS0 2859-1 for the levels of probability other than 10 Yo. (Refer to the efficiency
48、 curves given in IS0 2859-1 for the different sampling plans). STD-CEN EN 12b5LI-2-ENGL 1748 m 3404587 0188720 588 m Page 10 EN 12654-2: 1 998 A.2Control with reduced severity Table A.2: Contrc. with reduced severity Simple Sample Plan No of elementary units in a lot 2 A 8 (A) 9A15(B) 16 25 (C) 26 A
49、 50 (D) 51 A 90 (E) 91 150 (F) 151 A 280 (G) 281 500 (H) 501 1200 (J) 1201 3200 (K) 3201 lOOOO(L) No of samples taken 2 2 2 3 5 8 13 20 32 50 80 AQL = 1,5 Acc Rej O O O O O O O 1 1 2 3 1 1 1 1 1 2 2 3 4 5 6 AQL =2,5 Acc Rej O O O O O O 1 1 2 3 5 1 1 1 1 2 2 3 4 5 6 8 - Double Sample Plan - - 1“ 2“ 1“ 2“ 1“ 2“ 1“ 2“ 1“ 2“ 1“ 2“ 1“ 2“ - No of samples taken 3 3 5 5 8 8 13 13 20 20 32 32 30 50 AQL = 1,5 Acc Rej (1) (1 1 (1) (1 1 (1) O 2 O 2 O 2 O 2 O 3 O 4 O 4 1 5 O 4 3 6 1 5 4 7 AQL =2,5 Acc Rej (1) (1) (1 1 (1) O 2 O 2 O 2 O 2 O 3 O 4 O 4 1 5 O 4 3 6
