ISO INTERNATIONAL STANDARD 9866-2 First edition 1991-09-15 Textiles -- Effect of dry heat on fabrics under low pressure - Part 2: Determination of dimensional change in fabrics exposed to dry heat Textiles-Effetde la chaleur sechesur des tissus sousbasse pression- Partie 2:Determination de la variation des dimensions de tissus exposes a la chaleur seche Reference number ISO 9866-2:1991(E) ISO 9866-2:1991(E) Foreword Iso (the Internalional Organization for Standardization)is a worldwide federation of national standards bodies (IsO memberbodies).The work of preparing International Standards is normally carried out throughIso technical committees.Each 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,govern- mental and non-governmental, in liaison with isO, also take part in the work.isocollaborates closelywiththe International Electrotechnical Commission (IEC)on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publicationas anInter- national Standard requires approval byat lcast75%ofthe member bodies casting a vote. ISO/TC38,Textiles,Sub-CommitteeSC2,Cleansing,finishingandwater resistancetests. ISO9866 consists of the following gparts,underthe general title Textiles-Effectofdryheatonfabricsunderlowpressure: Part1:Procedurefordry-heattreatment offabrics Part2:Determinationofdimensionalchangeinfabricsexposedto dry heat @ISO1991 or by any means, electronic or mcchanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland ii ISO 9866-2:1991(E) INTERNATIONALSTANDARD Textiles - Effect of dry heat on fabrics under low pressure- Part 2: heat inIso9866-1,andthechanges in specimen dimen Scope sions are measured. This part of iso 9866 specifies a method for deter- mining the dimensional change of fabrics on ex- 4 Apparatus posure to dry heat. It is intended to predict the behaviour of fabrics in garment-making processes 4.1 Press,as described inIs0 9866-1.It is essential such as fusing and transfer printing. that the working area of the test press is larger than the specimen size. 2 Normative references 4.2Rule.notlessthan750mm inlength.preferably The following standards contain provisions which, with an engraved, bevelled edge, marked in milli- through reference in this text, constitute provisions metres,for measuring fabric specimens. of thispartofiso9866.Atthetimeofpublication, the editions indicated were valid. All standards are 4.3 Flexible steel rule or fibre-glass tape, marked subjectto revision,and parlies to agreemenls based inmillimctrcs,for mcasuringgarments. onthispartof iso9866areencouragedtoinvesti- gate the possibilityof applyingthe most recent edi- 4.4 Means of marking reference points, for exam- tions ofthe standardsindicatedbelow.Membersof plo: IECandisomalntalnreglstersofcurrentlyvalid International Standards. 4.4.1 Indelible ink. Iso139:1973,Textiles-Standardatmospheresfor conditioning and testing. 4.4.2Finethreads,of colour contrastingwith the fabric. Iso3759:1984,Textiles-Preparation,markingand measuringoffabricspecimensandgarmentsintests 4.4.3 Heated wire, with which small holes may be fordeterminationofdimensionalchange. made (for thermoplastics fabrics only). ISo9866-1:1991,Textiles-Effectofdryheatonfab- 4.4.4Staples.withmeasurementsmadefromthe rics under low pressure Part 1:Procedure for point of entry of the staple into the fabric. indicate dry-heat treatment of fabrics. on the fabric which end of the staplc is used for measurement. 3 Principle 4.5 Flat table, of dimensions such that the complete Specimens of fabric are heated under specified article being tested can be laid flat for measure- conditions in accordance with the method describ