1、BRITISH STANDARD BS 7033-4: 1990 Cleaning and polishing cloths Part 4: Specification for window cleaning clothsBS7033-4:1990 This British Standard, having been prepared under the direction of the Textiles and Clothing Standards Policy Committee, was published under the authority of the Board of BSI
2、and comes into effect on 30 September 1990 BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference TCM/20 Draft for comment 88/41318 DC ISBN 0 580 18548 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted
3、 by the Textiles and Clothing Standards Policy Committee (TCM/-) to Technical Committee TCM/20, upon which the following bodies were represented: Association of Heavy Textile Proofers of Great Britain Association of Jute Spinners and Manufacturers British Textile Technology Group Flax and Linen Asso
4、ciation (GB) Made-up Textiles Association Man-made Fibres Producers Committee Post Office The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Nonwovens Manufacturers Association British Railways Board British Textile Employers Associa
5、tion Home and Contract Furnishing Textiles Association Janitorial Suppliers Association Ltd. London Regional Transport Ministry of Defence Reclamation Association Textile Research Council (Fcra) Wiping Cloth Manufacturers Association Amendments issued since publication Amd. No. Date CommentsBS7033-4
6、:1990 BSI 09-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Dimensions and performance 1 4 Sampling and conditioning 1 5 Packaging and marking 1 Appendix A Test methods 2 Table 1 Window cleaning cloths 1 Publications referred to Inside back cov
7、erBS7033-4:1990 ii BSI 09-1999 Foreword This Part of this BS 7033 has been prepared under the direction of the Textiles and Clothing Standards Policy Committee. A wide range of cleaning and polishing cloths is in use for different applications. BS 7033 specifies requirements for a limited range of c
8、loths, suitable for cleaning and polishing applications and is published in five Parts as follows: Part 1: Specification for optical polishing cloths for use on transparent plastics panels; Part 2: Specification for industrial wipers from reclaimed materials, and waste yarn for cleaning and lubricat
9、ing purposes; Part 3: Specification for floorcloths and dishcloths; Part 4: Specification for window cleaning cloths; Part 5: Specification for general polishing cloths. In this Part requirements are specified for window cleaning cloths. The standard covers the end products quoted but can also be us
10、ed to specify the fabrics from which they are manufactured. Requirements for chamois leather are specified in BS 6715. Many properties cannot be specified objectively and cannot therefore be included in the specification. Examples of such properties include colour, handle, appearance and details of
11、additional design features. Public sector purchasing authorities may be able to supply standard patterns which cover these properties and thereby serve to resolve any ambiguities of description. The standard only covers the basic description of the products and their construction and performance req
12、uirements. Purchasing authorities therefore may need to include additional information. Appendix A gives test methods. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with
13、a British Standard does not of itself confer immunity from legal obligations. In particular attention is drawn to Statutory Instrument No. 26 The Textile Products (Indications of Fibre Content) Regulations 1986. Summary of pages This document comprises a front cover, an inside front cover, pages i a
14、nd ii, pages1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS7033-4:1990 BSI 09-1999 1 1 Scope This Part of BS 7033 specifies requirem
15、ents for chamois leather cloth substitutes for window cleaning, for cleaning vehicle paintwork and similar applications. NOTE 1The fabrics are normally made from polyvinyl alcohol fibres, needlefelted and chemically treated but other types of fabric are used, e.g. synthetic rubber coated, or bonded
16、woven cellulosic fabrics or bonded cellulosic nonwovens. NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this Part of BS 7033 the following definitions apply. 2.1 batch a definite quantity of some commodity manu
17、factured or produced under conditions which are presumed uniform 2.2 window cleaning cloth a chamois leather cloth substitute intended for the wet cleaning of windows and other glass surfaces, vehicle paintwork and similar applications 3 Dimensions and performance Window cleaning cloths shall be rec
18、tangular in shape and shall comply with Table 1. 4 Sampling and conditioning 4.1 Sampling Sampling shall be carried out in such a manner that samples taken are representative of the manufacturing, processing, dyeing or finishing batch from which they are drawn. NOTEA sufficient number of representat
19、ive samples should be taken to carry out all the tests specified in Table 1. 4.2 Conditioning of specimens Specimens shall be conditioned for a minimum of24h, and tested in the standard temperate atmosphere for testing of textiles defined in BS1051, i.e. a relative humidity of 65 2 % r.h. anda tempe
20、rature of 20 2 C. In the event of a dispute, samples shall be preconditioned for 4 h in a relative humidity not exceeding 10 % at a temperature not greater than50 C before being exposed to the standard temperate atmosphere for testing of textiles. Table 1 Window cleaning cloths 5 Packaging and marki
21、ng The cloths shall be packaged singly, folded to a convenient size and placed in a polyethylene bag of minimum wall thickness 375 m. The bag shall be sealed with pressure-sensitive tape. The bag shall bear or contain a label with the following details: a) name, trademark, or other means of identifi
22、cation of the manufacturer; b) the number and date of this British Standard, i.e. BS 7033-4:1990 1) . NOTE 1In addition, each bag should bear such other markings as the contract or order may direct. NOTE 2Marking directly on the cloths is not required. Characteristic Dimensions and performance Test
23、method Minimum area 1400 cm 2 A.2 Minimum length of shortest edge 35 cm A.2 Minimum mass per unit area 230 g/m 2 A.3 Minimum wet burst strength 900 kPa A.4 Minimum wet burst strength retention after washing 90 % A.4 a Minimum dimensional change machine direction cross direction 6 % 6 % A.5 Minimum a
24、brasion resistance 400 rubs A.6 Minimum absorptive capacity beforewashing afterwashing 800 g/m 2800 g/m 2 A.7 A.7 a Minimum surface drag for each face 3 A.8 a After washing and drying in accordance with A.9. 1) Marking BS 7033-4:1990 on or in relation to a product represents a manufacturers declarat
25、ion of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim is therefore solely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of con
26、formity, which may be desirable.BS7033-4:1990 2 BSI 09-1999 Appendix A Test methods A.1 General Where water is used in any of the test methods it shall be in accordance with grade 3 of BS 3978. A.2 Area and length of shortest edge A.2.1 Test at least five cloths, selected at random. A.2.2 Determine
27、the width of each test specimen in accordance with BS 1930 except that the width shall be measured to the nearest 5 mm. A.2.3 Determine the length of each test specimen in accordance with BS 1931 except that the length shall be measured to the nearest 5 mm. A.2.4 Calculate the area a (in cm 2 ) of e
28、ach test specimen from the equation: a = wL where w is the width of the test specimen (in cm); L is the length of the test specimen (in cm). Calculate the mean area of the five specimens. A.2.5 Record the length of the shortest edge (width or length) of each of the five test specimens. Calculate the
29、 mean length of the five shortest edges. A.3 Mass per unit area A.3.1 Woven and knitted cloths Carry out the test in accordance with method 5 of BS 2471. A.3.2 Nonwovens Carry out the test in accordance with method 3 of BS 2471 except that the width of the cloth shall be determined in accordance wit
30、h A.2. A.4 Wet burst strength Carry out the test in accordance with BS 4768, using a 30 mm diameter diaphragm, except for the following modifications. a) Number of test specimens. Take at least 10 cloths taken at random. b) Procedure. Immerse the test specimens for at least 5 min in water containing
31、 0.5 g/L of sodium dioctyl sulphosuccinate. Allow to drain for5 1min and immediately measure the bursting strength. A.5 Dimensional stability Carry out the test in accordance with BS 5807, except that the washing and drying shall be in accordance with A.9. A.6 Abrasion resistance Carry out the test
32、in accordance with BS 5690 except that the test specimen is tested with100 10% absorbed water (based on the mass of the dry conditioned test specimen) and the end point is taken as breakdown, or as the occurrence of pilling to rating 1 of BS 5811, whichever occurs the sooner. A.7 Absorptive capacity
33、 A.7.1 Apparatus and reagents A.7.1.1 Cylindrical wire basket, open at one end,80mm high, 50 mm in diameter weighing3.0 0.2 g and constructed of0.8 0.02mm diameter copper wire, in such a manner that the wires form a mesh approximately20 mm square. A.7.1.2 Balance, capable of weighing to within 0.002
34、 g. A.7.1.3 Oven, capable of maintaining a temperature of 105 2 C. A.7.1.4 Watch glass, tared, 125 5 mm in diameter. A.7.1.5 Stop watch, capable of being read to within 0.5 s. A.7.1.6 Rectangular water container, having minimum dimensions 200 mm 150 mm and a minimum depth of 100 mm. A.7.1.7 Water, c
35、ontaining 0.5 g/L of sodium dioctyl sulphosuccinate. A.7.1.8 Rule, capable of being read to within 0.5mm. A.7.2 Test specimens From each of four cloths, conditioned in accordance with 4.2, cut at least one strip approximately 75 mm wide and of length such that the mass of each strip is 5 0.1 g. Take
36、 half of the test specimens in the machine direction and half in the cross direction and an equal number of test specimens from each cloth. A.7.3 Procedure Measure the length and width of each test specimen to the nearest 1.0 mm and record the results. Fill the water container with water to a depth
37、such that the cylindrical basket (A.7.1.1), when placed on its sides in the container, is submerged to a minimum depth of 25 mm. Dry the basket in the oven for a minimum period of2 h then allow it to cool to room temperature and weigh to the nearest 0.002 g. Roll each test specimen into a loose roll
38、 of about the same diameter as that of the cylindrical basket. Place the test specimen in the basket, with its75mm edge parallel to the side of the basket so that the specimen fills the basket.BS7033-4:1990 BSI 09-1999 3 Weigh the basket and test specimen to the nearest0.002 g. Drop the basket, cont
39、aining the test specimen, on its side into the water from a height of 25 mm above the surface of the water. Allow the basket and specimen to remain submerged for at least 5 min, then remove by grasping the open end of the basket. Suspend the basket plus specimen and allow it to drain until the rate
40、of dripping is not greater than one drop per10s and then immediately weigh the basket and specimen to the nearest 0.002 g, in the tared watch glass. A.7.4 Calculation Calculate the absorptive capacity A (in g/m 2 ) from the equation: Repeat the test on the remaining test specimens. A.7.5 Report Repo
41、rt the absorptive capacity as the mean of the results for the individual test specimens expressed to the nearest 1.0 g/m 2 . A.8 Surface drag Carry out the test in accordance with method 12B, mode 1 of BS 3424-10 except that the melton fabric is replaced by a sheet of clear float or polished plate g
42、lass complying with BS 952-1 and the test specimen is tested with 100 10 % absorbed water (based on the mass of the dry conditioned test specimen). A.9 Washing Subject the specimens to 3 wash cycles in accordance with procedure 8A of BS 4923, each wash cycle being followed by a drying cycle in accor
43、dance with procedure A of BS 4923. where m 1 is the mass of the watch glass plus basket and dry conditioned test specimen (in g); m 2 is the mass of the watch glass plus basket and test specimen after draining (in g); L is the length of the test specimen (in mm); b is the width of the test specimen
44、(in mm). A m 2 m 1 Lb - 10 6 =4 blankBS7033-4:1990 BSI 09-1999 Publications referred to BS 952, Glass for glazing. BS 952-1, Classification. BS 1051, Glossary of terms relating to the conditioning, testing and mass determination of textiles. BS 1930, Method for the determination of width of woven or
45、 knitted fabrics when relaxed at zero tension. BS 1931, Method for the determination of length of woven or knitted fabrics when relaxed at zero tension. BS 2471, Methods of test for textiles Woven fabrics Determination of mass per unit length and mass per unit area. BS 3424, Methods of test for coat
46、ed fabrics. BS 3424-10:Methods 12A and 12B, Determination of surface drag. BS 3978, Specification for water for laboratory use. BS 4768, Method for the determination of the bursting strength and bursting distension of fabrics. BS 4923, Schedule of domestic washing and drying procedures for textile t
47、esting. BS 5690, Method for determination of the abrasion resistance of fabrics. BS 5807, Method for determination of dimensional change of textiles in domestic washing and drying. BS 6715, Specification for chamois leather 2) . BS 7033, Cleaning and polishing cloths. BS 7033-1, Specification for op
48、tical polishing cloths for use on transparent plastics panels 2) . BS 7033-2, Specification for industrial wipers from reclaimed materials, and waste yarn for cleaning and lubricating purposes 2) . BS 7033-3, Specification for floorcloths and dishcloths 2) . BS 7033-5, Specification for general poli
49、shing cloths 2) . 2) Referred to in the foreword only.BS 7033-4: 1990 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or edit
