1、BSI Standards PublicationBS ISO 18188:2016Specification of polypropylenedrinking strawsBS ISO 18188:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 18188:2016.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/75, Plastics and
2、rubber film and sheets.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Pub
3、lished by BSI Standards Limited 2016ISBN 978 0 580 84847 6ICS 67.250; 83.140.99Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 29 February 2016.Amendments/corrigen
4、da issued since publicationDate Text affectedBS ISO 18188:2016 ISO 2016Specification of polypropylene drinking strawsSpcifications des pailles boire en polypropylneINTERNATIONAL STANDARDISO18188First edition2016-02-01Reference numberISO 18188:2016(E)BS ISO 18188:2016ISO 18188:2016(E)ii ISO 2016 All
5、rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet
6、 or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyright
7、iso.orgwww.iso.orgBS ISO 18188:2016ISO 18188:2016(E)Foreword ivIntroduction v1 Scope .12 Normative references 13 Terms and definitions .14 Raw materials 25 Requirements 25.1 Appearance 25.2 Tolerance on dimensions . 25.2.1 Inner diameter . 25.2.2 Length 25.2.3 Wall thickness 25.2.4 Uniformity of wal
8、l thickness 25.3 Properties 25.3.1 Resistance to bending 25.3.2 Heat endurance . 25.3.3 Cold endurance . 26 Test methods .36.1 Conditioning and testing atmosphere. 36.2 Appearance inspection. 36.3 Dimensional measurement 36.3.1 Inner diameter . 36.3.2 Length 36.3.3 Wall thickness 36.3.4 Uniformity o
9、f wall thickness 36.4 Properties 36.4.1 Bending test . 36.4.2 Heat endurance test 36.4.3 Cold endurance test . 47 Packaging and labelling 47.1 Packaging . 47.2 Labelling on packaging 48 Sampling and criteria for conformity .4Annex A (normative) Sampling and criteria for conformity 5Bibliography 7 IS
10、O 2016 All rights reserved iiiContents PageBS ISO 18188:2016ISO 18188:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO
11、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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates clo
12、sely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria
13、needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of pat
14、ent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name use
15、d in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Bar
16、riers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products.iv ISO 2016 All rights reservedBS ISO 18188:2016ISO 18188:2016(E)IntroductionDespite worldwide use, polypropylene drinking
17、straws lack standards and specifications. This International Standard provides general requirements for dimensions and performance properties to ensure consistent, quality products. ISO 2016 All rights reserved vBS ISO 18188:2016BS ISO 18188:2016Specification of polypropylene drinking straws1 ScopeT
18、his International Standard specifies the general characteristics, requirements and methods for testing of polypropylene (PP) drinking straws (herein after called PP straws). It is applicable to PP straws having an inner diameter of 3 mm to 12 mm.2 Normative referencesThe following documents, in whol
19、e or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 291, Plastics Standard atmospheres f
20、or conditioning and testingISO 1873-2, Plastics Polypropylene (PP) moulding and extrusion materials Part 2: Preparation of test specimens and determination of propertiesISO 4593, Plastics Film and sheeting Determination of thickness by mechanical scanningISO 19069-1, Plastics Polypropylene (PP) moul
21、ding and extrusion materials Part 1: Designation system and basis for specifications3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1plastic drinking strawthin tube of plastic for sucking up liquid from a container3.2straight strawstraw with a st
22、raight tube3.3flexible/bendable strawstraw with an angle-adjustable bellows segment3.4spoon strawstraw with a spoon-shaped end, intended for slushes3.5sharp tip strawstraw with a sharp tip, intended for insertion through film sealed containers3.6extendable strawstraw composed of concentric sections
23、whose length is extended by pulling the inner tube out of the outer oneINTERNATIONAL STANDARD ISO 18188:2016(E) ISO 2016 All rights reserved 1BS ISO 18188:2016ISO 18188:2016(E)3.7packprimary packaging4 Raw materialsA suitable grade of PP conforming to the food contact requirements of the intended ma
24、rket shall be utilized in the manufacture of PP straws. Additives, e.g. colorants, if used, shall also be of food grade. Printing is not allowed on the straws. The designation and specification of different grades of polypropylene are described in ISO 19069-1 while the relevant properties are determ
25、ined using the methods described in ISO 1873-2.5 RequirementsThe following are requirements provided for general guidance. Additional requirements shall be as agreed upon between the interested parties.5.1 AppearancePP straws shall be free of visible contaminants and any structural defects such as v
26、isible cracks or splits.5.2 Tolerance on dimensions5.2.1 Inner diameterThe tolerance of the inner diameter of straws shall be within 0,3 mm of the nominal diameter.5.2.2 LengthThe tolerance of the length of straws shall be within 3 mm of the nominal length if the nominal length is less than or equal
27、 to 250 mm. In case the nominal length is more than 250 mm, the tolerance shall be within 5 mm of the nominal length.5.2.3 Wall thicknessWall thickness of straws shall not be less than 2 % of the nominal diameter.5.2.4 Uniformity of wall thicknessThe difference between the maximum and minimum wall t
28、hickness shall be less than 0,05 mm (excluding the thickness of colour stripes).5.3 Properties5.3.1 Resistance to bendingWhen tested in accordance with 6.4.1, the straws shall not rupture.5.3.2 Heat enduranceThere shall be no deformation and/or colour fading after testing in accordance with 6.4.2.5.
29、3.3 Cold enduranceThe straws shall not crack after testing according to 6.4.3.2 ISO 2016 All rights reservedBS ISO 18188:2016ISO 18188:2016(E)6 Test methods6.1 Conditioning and testing atmosphereDimensional measurement and testing shall be carried out at ambient temperature, as specified in ISO 291.
30、6.2 Appearance inspectionInspection for visible contaminants and any structural defects of the straws shall be conducted under normal light.6.3 Dimensional measurement6.3.1 Inner diameterMeasure the inner diameter of a straw at one end, using a profile projector or other suitable means, capable of r
31、eading to 0,01 mm or less. For extendable straws, the measurement shall be done at the outer tube.6.3.2 LengthThe length of a straw shall be measured using a graduated ruler or other suitable means, capable of reading to 0,5 mm or less.Flexible/bendable straws shall be measured as received.Extendabl
32、e straws shall be measured at their full extension.6.3.3 Wall thicknessMeasure the wall thickness of a straw at two positions of each end using devices complying with the requirements in ISO 4593, capable of reading to 0,001 mm or less.6.3.4 Uniformity of wall thicknessFrom the values of the wall th
33、ickness obtained per 6.3.3, calculate the difference between the maximum and minimum wall thickness.6.4 Properties6.4.1 Bending testBend a straw 90 and release at five different points along its length (including the flexible part of flexible straws). Examine thoroughly for any rupture.A pipette bul
34、b may be used to draw distilled water into the straw to identify any signs of rupture.6.4.2 Heat endurance testImmerse the entire length of the straws in a beaker filled with (95 2) C distilled water. Put the beaker in an oven at a constant temperature of (50 2) C for 30 min. Remove the straws from
35、the water, spread them out and leave at ambient temperature for 30 min. Examine thoroughly for any visible deformation and colour fading.Flexible/bendable straws shall be tested as received.Extendable straws shall be tested at their full extension. ISO 2016 All rights reserved 3BS ISO 18188:2016ISO
36、18188:2016(E)6.4.3 Cold endurance testImmerse the entire length of the straws in a beaker filled with (1 1) C ice cold water. Keep the water at a constant temperature of (1 1) C for 30 min by any suitable means. Remove a straw from the water and immediately bend it 90 and release at five different p
37、oints along its immersed section. After bending all of the straws, examine thoroughly for any cracks.Flexible/bendable straws shall be tested as received.Extendable straws shall be tested at their full extension.7 Packaging and labelling7.1 PackagingThe straws shall be packed appropriately to keep t
38、hem clean and may be individually wrapped with film or paper.7.2 Labelling on packagingThe packaging shall be labelled with the following information:a) the name of the manufacturer;b) the material (polypropylene) and size of the straws;c) number of straws in a pack;d) the month and year of manufact
39、ure;e) any information regarding health and safety required by the buyer.8 Sampling and criteria for conformitySampling and criteria for conformity, including sample size for each testing items are specified in Annex A.4 ISO 2016 All rights reservedBS ISO 18188:2016ISO 18188:2016(E)Annex A (normativ
40、e) Sampling and criteria for conformityA.1 SamplingA.1.1 All the straws of the same dimensions in a consignment shall be grouped together to constitute a lot.A.1.2 The conformity of the lot to the requirements of this International Standard shall be determined on the basis of tests carried out on sa
41、mples randomly selected from the lot.A.1.3 The requirements for sampling for packaging and labelling inspection are specified in Table A.1.Table A.1 Sample size for packaging and labelling inspectionNumber of pack in lot (pack)Sample size for packaging and labelling inspection (pack)Acceptance numbe
42、rUp to 50 2 051 - 500 8 1501 3 200 13 23 201 and above 20 3A.1.4 For appearance inspection and measurement of dimensions, the sample size shall be 30 % of the corresponding size used for packaging and labelling inspection but in no case less than six pieces.A.1.5 The requirements for sampling for be
43、nding, heat and cold endurance test are specified in Table A.2.A.2 Criteria for conformityThe lot shall be considered as conforming to the requirements of this International Standard if all of the following conditions are satisfied:a) the number of pack that found defective during the packaging or l
44、abelling inspection shall be no more than the acceptance number of the corresponding sample size specified in Table A.1;b) all of the straws in A.1.4 shall be in accordance with 5.1, 5.2.1, 5.2.2, 5.2.3 and 5.2.4;c) the number of straws that failed the bending or heat endurance or cold endurance tes
45、t shall be no more than the acceptance number of the corresponding sample size specified in Table A.2. ISO 2016 All rights reserved 5BS ISO 18188:2016ISO 18188:2016(E)Table A.2 Sample size for bending, heat and cold endurance testNumber of straws in lot (piece)Sample size for bending, heat and cold
46、endurance test (piece)Acceptance numberUp to 50 2 051 - 500 8 1501 3 200 13 23 201 and above 20 36 ISO 2016 All rights reservedBS ISO 18188:2016ISO 18188:2016(E)Bibliography1 ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQ
47、L) for lot-by-lot inspection ISO 2016 All rights reserved 7BS ISO 18188:2016ISO 18188:2016(E) ISO 2016 All rights reservedICS 67.250; 83.140.99Price based on 7 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publi
48、cations, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)BSI Group Headquarters389 Chiswick High Road London W4 4AL UKAbout usWe bring together business, indu
49、stry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards to help them achieve their goals.Information on standardsWe can provide you with the knowledge that your organization needs to succeed. Find out more about Britis
