ISO 7617-1:2001

Plastics-coated fabrics for upholstery — Part 1: Specification for PVC-coated knitted fabrics

This part of ISO 7617 specifies technical requirements for coated fabrics for upholstered furniture for interior use, obtained by applying to one side of a weft-knitted base cloth a substantially continuous coating of a suitably plasticized polymer of vinyl chloride, or a copolymer the major constituent of which is vinyl chloride. Such coatings are known as poly(vinyl chloride) (PVC) coatings. The present specification covers fabrics coated with solid PVC and also covers two grades with coatings consisting of a layer of expanded PVC.

Supports textiles revêtus de plastique pour ameublement et garniture — Partie 1: Spécifications des étoffes tricotées revêtues de PVC

General Information

• Status: Published
• Publication Date: 19-Dec-2001
• ICS: 59.080.40 - Coated fabrics
• ICS: 97.140 - Furniture
• Technical Committee: ISO/TC 45/SC 4 - Products (other than hoses)
• Drafting Committee: ISO/TC 45/SC 4/WG 13 - Coated fabrics
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 01-Nov-2021

Relations

• Revises: ISO 7617-1:1994 - Plastics-coated fabrics for upholstery — Part 1: Specification for PVC-coated knitted fabrics
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 7617-1
Third edition
2001-12-15


Plastics-coated fabrics for upholstery —
Part 1:
Specification for PVC-coated knitted fabrics
Supports textiles revêtus de plastique pour ameublement et garniture —
Partie 1: Spécifications des étoffes tricotées revêtues de PVC





Reference number
ISO 7617-1:2001(E)
©
 ISO 2001

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ISO 7617-1:2001(E)
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ii © ISO 2001 – All rights reserved

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ISO 7617-1:2001(E)
Contents Page
Foreword.iv
1 Scope .1
2 Normative references.1
3 Sampling.2
4 Testing and compliance.2
5 Technical requirements .2
6 Marking .6
7 Test report .6
Annex A (normative) Method of selecting test specimens .7
Annex B (normative) Determination of elongation and elastic recovery.10
Annex C (normative) Determination of resistance to print wear .12
Annex D (normative) Determination of skin-coat resistance of coated fabrics.14
Annex E (normative) Determination of colour fastness to rubbing .16
Bibliography.17

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ISO 7617-1:2001(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 3.
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 part of ISO 7617 may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 7617-1 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4,
Products (other than hoses).
This third edition cancels and replaces the second edition (ISO 7617-1:1994), which has been technically revised.
ISO 7617 consists of the following parts, under the general title Plastics-coated fabrics for upholstery:
 Part 1: Specification for PVC-coated knitted fabrics
 Part 2: Specification for PVC-coated woven fabrics
 Part 3: Specification for polyurethane-coated woven fabrics
Annexes A to E form a normative part of this part of ISO 7617.
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INTERNATIONAL STANDARD ISO 7617-1:2001(E)

Plastics-coated fabrics for upholstery —
Part 1:
Specification for PVC-coated knitted fabrics
1 Scope
This part of ISO 7617 specifies technical requirements for coated fabrics for upholstered furniture for interior use,
obtained by applying to one side of a weft-knitted base cloth a substantially continuous coating of a suitably
plasticized polymer of vinyl chloride, or a copolymer the major constituent of which is vinyl chloride. Such coatings
are known as poly(vinyl chloride) (PVC) coatings. The present specification covers fabrics coated with solid PVC
and also covers two grades with coatings consisting of a layer of expanded PVC.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this part of ISO 7617. For dated references, subsequent amendments to, or revisions of, any of these publications
do not apply. However, parties to agreements based on this part of ISO 7617 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain
registers of currently valid International Standards.
ISO 105-A02:1993, Textiles —Tests for colour fastness — Part A02: Grey scale for assessing change in colour
ISO 105-B01:1994, Textiles — Tests for colour fastness — Part B01: Colour fastness to light: Daylight
ISO 105-B02:1994, Textiles — Tests for colour fastness — Part B02: Colour fastness to artificial light: Xenon arc
fading lamp test
ISO 105-X12:2001, Textiles — Tests for colour fastness — Part X12: Colour fastness to rubbing
ISO 1419:1995, Rubber- or plastics-coated fabrics — Accelerated-ageing tests
ISO 1421:1998, Rubber- or plastics-coated fabrics — Determination of tensile strength and elongation at break
ISO 2231:1989, Rubber- or plastics-coated fabrics — Standard atmospheres for conditioning and testing
ISO 2286:1998 (all parts), Rubber- or plastics-coated fabrics — Determination of roll characteristics
ISO 2411:2000, Rubber- or plastics-coated fabrics — Determination of coating adhesion
ISO 3303:1990, Rubber- or plastics-coated fabrics — Determination of bursting strength
ISO 5978:1990, Rubber- or plastics-coated fabrics — Determination of blocking resistance
ISO 5981:1997, Rubber- or plastics-coated fabrics — Determination of resistance to combined shear flexing and
rubbing
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ISO 7617-1:2001(E)
ISO 6451:1982, Plastics coated fabrics — Polyvinyl chloride coatings — Rapid method for checking fusion
ISO 7854:1995, Rubber- or plastics-coated fabrics — Determination of resistance to damage by flexing
3 Sampling
If individual rolls can be identified with manufacturing batches, at least one sample shall be taken from each batch
in the consignment. Each sample shall be regarded as being representative of its source, and suitable measures
shall be taken to preserve the identity between the samples and batch numbers.
If individual rolls cannot be identified in this way, the number of samples to be regarded as being representative of
the bulk shall be fixed by agreement between the purchaser and the supplier. Such samples shall be drawn at
random.
4 Testing and compliance
Samples shall first be subjected to the preliminary examination described in 5.1, which enables grossly defective
coated fabrics to be rejected immediately. If the samples satisfy this examination, testing shall be continued as
follows:
Tests shall be carried out on a set of test specimens selected from each sample in accordance with annex A. If
testing shows that the test specimens comply with the requirements of Tables 1 to 4, the bulk of the coated fabric
represented by the sample shall be deemed to comply with the requirements of this part of ISO 7617.
If any of the specimens tested do not comply with any of the appropriate requirements given in Tables 1 to 4, the
tests which the specimens have failed shall be repeated twice. For this purpose, two further samples shall be taken
from the same source as the original sample, and test specimens shall be taken from each sample so that
duplicate tests may be conducted. If all the re-test results comply with the appropriate requirements of Tables 1
to 4, then the bulk represented by the samples from which the specimens for re-testing were taken, together with
the original samples, shall be deemed to comply with the requirements of this part of ISO 7617. If any of the results
of the re-tests do not comply with the appropriate requirements of Tables 1 to 4, then the bulk represented by those
samples shall be deemed not to comply with the requirements of this part of ISO 7617.
5 Technical requirements
5.1 Preliminary inspection
5.1.1 General
A preliminary inspection shall be carried out as specified in 5.1.2 and 5.1.3, before conducting a detailed
examination and expensive tests, in order to ensure that the samples do not exhibit easily detectable unacceptable
faults. If such faults are detected, the inspection shall be stopped and the sample shall be considered as not
complying with the requirements of this part of ISO 7617. This shall be stated in the test report.
5.1.2 Visual inspection
The coating shall be uniformly applied and shall be free of visible flaws or cracks. Indicated local flaws are
admitted, but no test specimen shall be cut less than 5 cm from the flaw.
When examined under a magnification of × 6, the coating shall be substantially free of pinholes. Carry out the
inspection by examining 10 areas, each measuring 2 cm × 2 cm, evenly distributed over the usable width and
length of the sample. The mean pinhole density shall not be more than 10 per square decimetre (i.e. 2,5 times the
total count shall be < 10). This requirement does not apply to products stated to be microperforated.
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ISO 7617-1:2001(E)
NOTE 1 Products which are stated to be microperforated will nomally be provided with special cleaning instructions.
Unless the coating is intentionally transparent, the knitted base fabric shall not be visible through the coating. Its
profile shall also not be visible, either when the coated fabric is slack or when a slight tension is applied by hand. Its
presence shall also not be apparent by virtue of any printing or surface lacquer which may be present. If the base
fabric is visible in any of these ways, testing may be continued, but the visibility of the base fabric shall be reported
in the test report.
NOTE 2 It is possible that the surface is marked with the pattern of the back surface if the roll has been wound too tight.
Such marks are reversible and acceptable. They can be easily identified by heating a piece of coated fabric for a few minutes in
an oven at a temperature around 100 °C: the marking due to tight winding disappears.
It shall be possible to bend the coated fabric through an angle of 180°, with its coated face outwards, without any
noticeable whitening. If whitening appears, testing may be continued, but the appearance of the whitening shall be
reported in the test report.
5.1.3 Fusion
Verify the state of fusion of the coating to the base fabric in accordance with ISO 6451. Stop testing if the
components are not fused together satisfactorily.
5.2 Colour, embossing and finish
The quality of the colour, embossing and finish of the coated fabric, whether the material is plain or multicoloured,
shall be subject to agreement between the customer and supplier. This agreement shall be based on a reference
sample, and on illustrations or other ways of indicating acceptable deviations from the reference sample.
Comparison of colours shall be carried out in accordance with ISO 105-B01.
NOTE 1 Instrumental measurement of the colour difference between a specimen and the agreed reference sample may be
performed, if agreed between the interested parties. However, it should be pointed out that such methods are not without
problems. The result is influenced by the gloss and the state of the surface of the coated fabric. In addition, the presence of
embossing and small differences in gloss induce variations, which can be large, in the results, while the colour itself remains the
same. The use of a spectrophotometer equipped with an integrating sphere is mandatory but allows these variations to be only
partly eliminated. It is recommended therefore that, before carrying out any instrumental colour measurements on unknown
samples, the interested parties conduct comparative trials in order to determine precisely the optimum conditions of
measurement and to define tolerances, using samples which have already been adjudged acceptable or not by examination in
accordance with ISO 105-B01.
NOTE 2 Gloss can be evaluated by means of a glossmeter or reflectometer, which measures specular reflection The
sensitivity of such an apparatus will vary with the angle of incidence, to an extent depending on the degree of gloss or dullness:
20°, 60° and 85° are the angles of incidence normally selected for glossy, semiglossy and matt coated fabrics. However,
sensitivity is poor for highly matt materials. Moreover, reflection can vary noticeably from place to place on the surface
depending on the embossing pattern. Bearing these reservations in mind and the fact that response can vary from one
apparatus to another, parties which decide to evaluate gloss in this manner should preferably verify, in advance, the
reproducibility of the apparatus used for the coated fabrics to be tested.
5.3 Dimensions
5.3.1 Usable width
The usable width of the coated fabric, measured in accordance with ISO 2286-1, shall be as agreed between
purchaser and supplier. For this purpose, the term “usable width” shall refer to the width that has received a coating
complying with the requirements of 5.1. (See also the note to 5.3.2.)
5.3.2 Length of coated fabric in a roll
The length of material in a roll, measured in accordance with ISO 2286-1, shall be as agreed between purchaser
and supplier, including selected lengths and accepted tolerances.
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ISO 7617-1:2001(E)
NOTE When, exceptionally, the coated fabric is supplied as pre-cut pieces, the concepts of length and width become
meaningless. In this case, the shape and dimensions of the pieces, as well as the tolerances on the dimensions, should
preferably be defined by agreement between purchaser and supplier. It is recommended that the agreement include a scale
drawing.
5.3.3 Thickness
The thickness of the coated fabric, measured in accordance with ISO 2286-3 under a pressure of 2 kPa, shall
comply with the requirements of Table 1.
5.4 Physical requirements
5.4.1 Mass of coating per unit area
The mass of coating per unit area, measured in accordance with ISO 2286-2, shall comply with the requirements of
Table 1.
5.4.2 Mechanical properties
The coated fabric shall comply with the requirements of Table 2.
5.4.3 Surface properties
The coated fabric shall comply with the requirements of Table 3.
5.4.4 Properties after ageing
After accelerated ageing for 168 h at 85 °C under the conditions described in ISO 1419:1995, method 1, the coated
fabric shall comply with the requirements of Table 4.
5.4.5 Fire behaviour
The fire behaviour of the coated fabric shall comply with any existing local or national regulations.
NOTE It is not possible to specify a priori performance requirements for fire behaviour: finished items, which are made up
of coated fabrics and include various fillings and structures, have to fulfil risk requirements. These risks depend directly on the
place and environment of use. However, it is strongly recommended that manufacturers of coated fabrics give the users
information regarding fire behaviour so that they may manufacture furnishings responding as well as possible to safety
regulation requirements.
Table 1 — Thickness of coated fabric and mass of coating per unit area
Slightly expanded Expanded
Property Unit Solid coating Test method
coating coating
2
Total mass of coating per unit area g/m W 480 W 480 W 600 ISO 2286-2
Thickness of coated fabric (nominal) mm 0,75 to 1,0 0,85 to 1,15 1,10 to 1,40 ISO 2286-3
Tolerance on thickness mm ± 0,07 ± 0,10 ± 0,15

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ISO 7617-1:2001(E)
Table 2 — Mechanical-property requirements
Slightly expanded Expanded
Property Unit Solid coating Test method
coating coating
Tensile strength N
Longitudinal W 250 W 250 W 250
ISO 1421:1995,
method 1
Transverse
...