ISO 23560:2008
(Main)Woven polypropylene sacks for bulk packaging of foodstuffs
Woven polypropylene sacks for bulk packaging of foodstuffs
ISO 23560:2008 specifies the general characteristics, requirements and methods of test for woven polypropylene (PP) sacks. It is applicable to woven PP sacks, having a capacity of 50 kg or 25 kg, intended for the transport and storage of foodstuffs, such as cereals, sugar and pulses.
Sacs tissés en polypropylène pour l'emballage en vrac de denrées alimentaires
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 23560
First edition
2008-10-01
Woven polypropylene sacks for bulk
packaging of foodstuffs
Sacs tissés en polypropylène pour l'emballage en vrac de denrées
alimentaires
Reference number
ISO 23560:2008(E)
©
ISO 2008
---------------------- Page: 1 ----------------------
ISO 23560:2008(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2008
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2008 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 23560:2008(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Manufacture. 1
4.1 Raw materials. 1
4.2 Fabric . 2
5 Sack. 2
6 Liner . 3
7 Requirements . 3
7.1 Conditioning and test conditions. 3
7.2 Construction parameters . 3
7.3 UV resistance . 3
7.4 Mass of the bale. 3
7.5 Drop testing. 3
8 Food compatibility. 3
9 Marking and packaging. 3
9.1 Marking on sacks. 3
9.2 Packaging . 3
9.3 Marking on bales. 4
10 Sampling and criteria for conformity. 4
10.1 Sampling. 4
10.2 Criteria for conformity. 4
Annex A (normative) Method of calculation of the mass of a sack . 6
Annex B (normative) Breaking strength of fabric and bottom seam. 7
Annex C (normative) Drop testing. 8
Bibliography . 9
© ISO 2008 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 23560:2008(E)
Foreword
ISO (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
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 closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 23560 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products.
iv © ISO 2008 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 23560:2008(E)
Introduction
With the removal of trade barriers between nations, there is a need for an International Standard for the
packaging, transportation and storage of foodstuffs such as cereals. Polypropylene (PP) sacks made from
woven fabric are an ideal choice for the packaging of foodstuffs. Such sacks are produced from food-grade
polypropylene and ensure the mechanical strength needed for storage and transportation.
This International Standard describes the construction of the sacks, their dimensions and test methods
suitable for ensuring the long-term storage and transportation of foodstuffs in the sacks.
© ISO 2008 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 23560:2008(E)
Woven polypropylene sacks for bulk packaging of foodstuffs
1 Scope
This International Standard specifies the general characteristics, requirements and methods of test for woven
polypropylene (PP) sacks. It is applicable to woven PP sacks, having a capacity of 50 kg or 25 kg, intended
for the transport and storage of foodstuffs, such as cereals, sugar and pulses.
2 Normative references
The following referenced documents are indispensable for the application of this document. 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 for conditioning and testing
ISO 4892-3:2006, Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV
lamps
ISO 4915, Textiles — Stitch types — Classification and terminology
ISO 6591-2, Packaging — Sacks — Description and method of measurement — Part 2: Empty sacks made
from thermoplastic flexible film
ISO 13934-1, Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force and
elongation at maximum force using the strip method
ISO 13935-1, Textiles — Seam tensile properties of fabrics and made-up textile articles — Part 1:
Determination of maximum force to seam rupture using the strip method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
woven PP sack
container made of woven polypropylene (PP) fabric, closed at one end, in certain cases combined with other
flexible materials used, for instance, for the liner to provide the properties required for filling, storage and
distribution of the packaged commodity
4 Manufacture
4.1 Raw materials
A suitable grade of PP conforming to food contact requirements shall be utilized in the manufacture of the PP
tape/fabric used in the sacks.
© ISO 2008 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO 23560:2008(E)
4.2 Fabric
The fabric used in the manufacture of woven PP sacks shall be woven as a tube on a circular loom from PP
tapes having a width of (2,5 ± 1) mm. The tapes shall be woven sufficiently tightly so that the packaged
foodstuff does not leak out of the sack. The construction of the weave shall be sufficiently rough to ensure that
filled sacks do not slip from a stack of sacks.
The required construction parameters of sacks are given in Table 1.
Table 1 — Required construction parameters of fabric and sacks
Requirement
Parameter Test method
Type 1 Type 2
Capacity (kg) 50 25 —
+2 +2
Inside length 100 65
0 0
Dimensions (cm) ISO 6591-2
0 0
Inside width 57 48
−1 −1
+9 +4
Mass of sack (g) 135 67 See Annex A
−4 −3
Lengthwise W 918 W 816
Average br
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.