1、BRITISH STANDARD BS5866-3: 1991 Blankets suitable for use in the public sector Part3: Specification for synthetic fibre cellular blanketsBS5866-3:1991 This British Standard, having been prepared under the directionof the Textiles andClothing Standards PolicyCommittee, was publishedunder the authorit
2、yofthe Standards Boardand comes into effect on 30 August1991 BSI 09-1999 First published August1983 Second edition August1991 The following BSI references relate to the work on this standard: Committee reference TCM/1 Draft for comment 90/41064 DC ISBN 0 580 19670 4 Committees responsible for this B
3、ritish Standard The preparation of this British Standard was entrusted by the Textiles and Clothing Standards Policy Committee (TCM/-) to Technical Committee TCM/1, upon which the following bodies were represented: Blanket Manufacturers Association British Textile Confederation Chemical Industries A
4、ssociation Confederation of British Wool Textiles Limited Department of Health International Wool Secretariat Local Authority Organizations Ministry of Defence Textile Research Council (FCRA) Amendments issued since publication Amd. No. Date CommentsBS5866-3:1991 BSI 09-1999 i Contents Page Committe
5、es responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Materials 1 4 Manufacture 1 5 Dimensions 1 6 Physical properties 1 7 Colour fastness 2 8 Flammability 2 9 Selection of test specimens 2 10 Marking 2 Appendix A Methods of test 3 Table 1 Dimensions 1 Table 2 Physical properties
6、 1 Table 3 Colour fastness of dyed blankets 2 Publication(s) referred to Inside back coverBS5866-3:1991 ii BSI 09-1999 Foreword This revision of BS5866-3 has been prepared under the direction of the Textiles and Clothing Standards Policy Committee and supersedes BS5866-3:1983 which is withdrawn. Thi
7、s edition introduces certain technical changes, necessary in view of the publication of Part4 of this standard. BS5866 specifies requirements for a range of blanket types suitable for use in the public sector and is published in four Parts as follows: Part1: Specification for wool and wool/polyamide
8、 blankets; Part2: Specification for cotton leno cellular blankets; Part3: Specification for synthetic fibre cellular blankets; Part4: Specification for flammability performance. In this Part, requirements are specified for synthetic fibre cellular blankets. The principal change introduced by this ed
9、ition is that flammability performance, where required, now complies with Part4 of BS5866 which in turn has been based on the methods of test given in BS7175, taking into account behaviour in both horizontal and vertical planes, reflecting the orientations which would be used in real life situations
10、. BS5866 covers only the basic description of the products and their construction and performance requirements. Purchasing authorities therefore may need to include additional information. Many properties cannot be specified objectively and cannot therefore be included in this standard. Examples of
11、such properties include colour, handle, appearance and details of 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. Appendix A gives methods of test. A Bri
12、tish 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 a British Standard does not of itself confer immunity from legal obligations. In particular, attention is drawn to Statutory
13、 Instrument1986No.26, the Textile Products (Indications of Fibre Content) Regulations1986. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have
14、had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS5866-3:1991 BSI 09-1999 1 1 Scope This Part of BS5866 specifies requirements for synthetic fibre cellular blankets suitable for use in the public sector and particularly for areas that constitute a
15、 high life risk area. Requirements for adults, childrens and infants blankets are specified. NOTEThe titles of the publications referred to in this Part of this British Standard are listed on the inside back cover. 2 Definitions For the purposes of this Part of BS5866, the definitions given in BS618
16、9 apply, together with the following. high life risk area an area in which persons may reside and are not all able to move unaided away from a fire, or undivided areas in which more than40 persons normally congregate 3 Materials Blankets shall be made wholly from synthetic fibres. 4 Manufacture 4.1
17、Construction The blankets shall be of a cellular construction. NOTEThe cellular construction should be uniform. 4.2 Make-up Edges and ends of the blankets shall be finished with2cm hems in accordance with seam type6.03.08, as classified in BS3870-2. Hems shall be sewn using stitch type301, as classi
18、fied in BS3870-1, with a stitch length not greater than0.32cm. The sewing thread shall be spun polyester and of linear density38tex. For dyed blankets the thread shall be of equal colour fastness. NOTEThe thread should match the colour of the blankets. 4.3 Woven cellular blanket tucking strip Woven
19、cellular blankets shall have a plain weave tucking strip, the width of which shall be as given in Table 1, along each edge of the blanket. 4.4 Finish Blankets shall be scoured and tumble-dried. NOTEBlankets should contain no size or filling. 5 Dimensions The dimensions of the blankets shall be as gi
20、ven in Table 1 when determined as described in BS5129. NOTEBS5129 gives a range of recommended dimensions for blankets not specifically intended for use in the public sector. 6 Physical properties Blankets shall comply with Table 2. Table 1 Dimensions Table 2 Physical properties Blanket category Wid
21、th Length Width of tucking strip (min.) Adults blanket Childrens blanket Infants blanket cm 1803% 1453% 753% cm 2303% 1853% 1853% cm 23 3 3 Property Method of test Requirements Total mass (min.) A.1 adults blanket childrens blanket infants blanket 1.35kg 0.85kg 0.24kg Breaking strength (min.) for wo
22、ven fabrics A.2 machine direction20 threads cross direction26 threads 350N 450N Bursting strength (min.) for knitted fabrics BS4768 (30mm diameter orifice) 690kPa Thickness (min.) after three washes in accordance with6.5.3 of BS5651:1989 BS2544 (at a pressure of6.9Pa) 4.6mm Dimensional change A.3 or
23、A.4 machine direction cross direction 10% 10%BS5866-3:1991 2 BSI 09-1999 7 Colour fastness Dyed blankets shall comply with Table 3. 8 Flammability Where flammability performance is specified, blankets shall comply with Part4 of this British Standard. 9 Selection of test specimens 9.1 Inspection lot
24、and test sample A sampling scheme equivalent to at least one in every3000blankets shall be used. 9.2 Test specimens The test specimens shall be taken at points as widely dispersed as possible throughout the available test samples and no two specimens used for the determination of a particular proper
25、ty shall contain the same threads in the machine or cross direction. 10 Marking Blankets shall be supplied with the following information, e.g.on a label or swing ticket or on an accompanying invoice or other document; a) the manufacturers name, trademark or other means of identification; b) the num
26、ber and date of this BritishStandard, i.e.BS5866-3:1991 1) ; c) any other marking as the contract or order may direct. Where flammability requirements are specified, blankets shall be marked with details in accordance with BS5866-4. Table 3 Colour fastness of dyed blankets 1) Marking BS5866-3:1991 o
27、n or in relation to a product represents a manufacturers declaration 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 declarat
28、ion is not to be confused with third party certification of conformity, which may also be desirable. Agency Minimum rating Method of test Light Washing Bleaching Rubbing wet and dry 5 change in colour4; staining3-4 change in colour4 staining4 BS1006-B02 BS1006-C04 BS1006-N02: bath3 BS1006-X12BS5866-
29、3:1991 BSI 09-1999 3 Appendix A Methods of test A.1 Determination of mass of blanket Condition the blanket by freely exposing it to the standard temperate atmosphere for testing as defined in BS1051, i.e.at a relative humidity of65 2% and a temperature of20 2 C, for at least5h. Determine the mass to
30、 within 0.5%. A.2 Determination of breaking strength Use the method described in BS2576 but, owing to the nature of this particular fabric construction, fray down the specimen to20threads for tests in the machine direction and26threads for tests in the cross direction, regardless of the resultant sp
31、ecimen width. A.3 Determination of dimensional change on washing Take from the cellular portion a specimen in accordance with BS4931 and overlock the edges to prevent fraying. Follow the hospital laundry procedure (normal) described in6.5.3 of BS5651:1989, then tumble dry using the tumble-drier spec
32、ified in BS4923 with a maximum drying temperature in the exhaust of the machine of60 C. Determine the dimensions of the specimen as described in BS4931. Repeat the above washing procedure for a total of25 washing and drying cycles. Determine the total dimensional change occurring as a result of the2
33、5 treatments. A.4 Determination of dimensional change on commercial washing NOTEThis procedure employs a commercial hospital laundry wash, which involves washing of whole blankets. It is recommended for use in cases of dispute. A.4.1 General Wash the blanket as described in Appendix B of BS6246-4:19
34、83 and tumble dry by means of a tumble-drier with a maximum temperature in the exhaust of the machine of60 C. Measure the dimensions of the blanket as described inA.4.2. Repeat the washing and drying process for a total of25 cycles. Determine the total dimensional change occurring as a result of the
35、25cycles. A.4.2 Measurement of dimensions Measure the dimensions of the blanket at the following locations. a) Lengthways. On each of the two edges of the blanket, at both joins between the border and cellular regions, and at the centre of the cellular region. b) Widthways. At each of the two ends a
36、nd at the centre of the blanket. Determine the mean dimensional change in the machine and cross directions (lengthways and widthways respectively).4 blankBS5866-3:1991 BSI 09-1999 Publication(s) referred to BS1006, Methods of test for colour fastness of textiles and leather. BS1051, Glossary of term
37、s relating to the conditioning, testing and mass determination of textiles. BS2544, Methods for the determination of thickness of textile materials. BS2576, Method for determination of breaking strength and elongation (strip method) of woven fabrics. BS3870, Stitches and seams. BS3870-1, Classificat
38、ion and terminology of stitch types. BS3870-2, Classification and terminology of seam types. BS4768, Method for the determination of the bursting strength and bursting distension of fabrics. BS4923, Method for individual domestic washing and drying for use in textile testing. BS4931, Methods for pre
39、paration, marking and measuring of textile fabrics, garments and fabric assemblies in tests for assessing dimensional change. BS5129, Specification for dimensions of bed blankets. BS5651, Method for cleansing and wetting procedures for use in the assessment of the effect of cleansing and wetting on
40、the flammability of textile fabrics and fabric assemblies. BS5866, Blankets suitable for use in the public sector. BS5866-4, Specification for flammability performance. BS6189, Glossary of terms relating to fabrics and associated fibres, yarns and processes. BS6246, Industrial laundry machinery. BS6
41、246-4, Methods for the assessment of the effect of batch drying tumblers on textiles. BS7175, Methods of test for the ignitability of bedcovers and pillows by smouldering and flaming ignition sources 2) . 2) Referred to in the foreword only.BS5866-3: 1991 BSI 389 Chiswick High Road London W4 4AL BSI
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