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Whereas the Parliament of India has set out to provide a practical regime of right to
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in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.

“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न' 5 तरफ”

Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”

IS 8156 (1994): Fasteners for consumer goods-synthetic hook

and loop tape, specification [PGD 14: Consumer Products and
Allied Equipments]

“!ान $ एक न' भारत का +नम-ण”

Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता ह”

है”
ह
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
 IS 8156 x1994
( Reaffirmed 2004 )

( $FRT ‘5”-ifwT)
Indian Standard
.FASTENBRSFORCONSUMERGOODS-
SYNTHETICHOOKANDLOOP
TAPE - SPECIFI-CATION
(Second Revision )
First Reprint JUNE 19 95

UDC 688’25 : 677’074’33

@ BIS 1994

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

dune 1994 Price Group 3

Fasteners for Consumer Goods and Hair Cutting, Shaving, Shearing and Allied Equipments.
Sectional Committee, LM 15

FOREWORD

This Indian Standard ( Second Revision ) was adopted by fhe_Bureau of Indian Standards, after the
draft finalized by the Fasteners forconsumer Goods and Hair Cutting, Shaving, Shearing and Allied.
Equipments Sectional Committee had been approved by the Light Mechanical Engineering Division
Council.

With the advancement of technology, the synthetic hook and loop tapes are being used in more
and more diversified fields. These revolutionary fasteners are gentle enough to be used in baby’s,
diapers replacing safety pins and yet sturoy and reliable enough to be used even in aircrafts and
space-ships and now household fasteners.

This standard was first published in 1976 and revised in 1981. This second revision was.
undertaken with the aim of assimilating latest production methods and technology for production
of hook-and loop tapes of international quality. In the present revision following modifications
have b en made-,’
a) limination of hook and loop tape types
b) $Recommendation of nylon 6’6 as the material of manufacture
c) Preferred dimensions have been included based on preferred number series
d) Methods of measurement of width and length have been included
e) Requirement for weight of roll has been deleted
f ) The test for colour fastness has been modified to bring it in line with international practices
g) The tests for resistance to cold and thermal ageing which were introduced in the first revision
have been deleted in view of use of nylon 6’6 and polyester fibres, These fibres are known
to be resistant to vagaries of extreme temperature conditions of use.

While revising this standard reference has also been made to UK Defence Specification No. UK/
SC 4727B ‘Specification for performance of touch and close fasteners’ brought out by Ministry of.
Defence, UK.

For the purpose of deciding whether a particular requirement of this standard is complied with,
the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded
off in accordance with IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )‘. The
number of significant places retained in the rounded off value should be the same as that of the.
specified. value in this standard.
 IS 8156 : 1994

Indian Standard
FASTENERS FORCONSUMERGOODS-
SYNTHETICHOOKANDLOOP
TAPE- SPECIFICATION
(Second Revision )
1 SCOPE 5 DIMENSIONS

1.1 This standard covers the dimensions,_ mate- 5.1 The recommended sizes are as follows:
rials and other requirements pertaming to
Nominal Width Length
,construction and performance for synthetic tape
fasteners consisting of a hook tape and a loop mm m
tape. 16, 20, 25 25 100
2 REFERENCES 30, 38, 50

The following Indian Standards pre necessary 5.1.1 The average width of AQL samples shall
adjuncts to this standard: not be lower than the agreed width by more-*
than 1’5 mm, when measured as described in
IS No. Title Annex &
690 : 1988 Method for determination of
colour fastness of textile mate- 5.1.2 The average length of AQL samples shall
rials to sea water ( first not be lower than the agreed length by more
revision )
than one percent, when measured as described
in Annex C.
765 : 1979 Method for determination of
colour fastness of textile ma- 5.1.3 If required for a particular application,
terials to washing; Test 4 the sizes other than those given in 5.1 may be
( second revision ) used.
1481 : 1970 Specification for metric steel
scales for engineers 6 MANUFACTURE, WORKMANSHIP AND
FINISH
2454: 1985 Methods for determination
of colour fastness of textile 6.1 The hook tape component shall be woven
materials to artificial light using nylon 6’6 monofilament warp pile and
( xenon lamp ) (first revision ) narrow fabric construction with nylon 6’6
2500~( Part 1 ) : Sampling inspection proce- multifilament ground ends. A selvedge of 1 mm
1992 dures : Part 1 Attributes to 3 mm shall be provided along with both the
sampling plans indexed by edges to facilitate stitching. Monofilament
acceptable quality level auxiliary warp ends shall be woven in the
( AQL ) for lot by lot inspec- form of raised loops. The raised loops shall bc
tion ( second revision ) heat set to retain their shape. They shall be cut
near the top of the loops in order to form free
3 CONSTRUCTION hook engaging section ( locking element ). The
hook shall be leno-woven in a staggered order.
3.1 The tape fasteners shall be of the following
<types: 6.2 The loop tape shall be woven nylon 6’6.
a) Hook Tape multifilament warp pile and narrow fabric
construction with nylon 6’6 multifilament
b) Loop Tape
ground ends. A selvedge, of 1 mm to 3 mm
,4 MATERIAL shall be provided along both the edges to facili-
tate stitching. The loops shall engage the hooks
4.1 Hook and loop tape fasteners shall be of the hook tape component.
manufactured from nylon 6’6 monofilament and
multifilament yarns. Nylon 6’6 shall be tested 6.3 The hook and loop tapes shall be stabi-
according to the procedure given in Annex A. lized as necessary and preshrunk to ensure
maximum flatness, evenness and dimensional
-4.2 The combination of nylon 6.6 and polyester stability. The back of the tape shall be coated
filament yarns may also be used if agreed to with an elastomeric coating. The coating shall be
between the purchaser and the supplier. properly cured.

1
IS 8156:1994
6.4The hook and loop tape fasteners may be, acetone, as agreed to between the -purchaser and’
supplied in any colour as desired by the purcha- the supplier.
ser. The shade shall be uniform throughout on
both the hookand loop tapes, 8.3 The back of the tapes may be coated with a
flame retardant coating instead of elastomeric
7 PERFORMANCE coating as per 6.3 if required by the purchaser.

7.1 ColoorFastness 9 SAMPLING

The dyed type hook and loop tape components 9.1 Unless otherwise agreed to between the
shall show colour fastness to light, cracking, supplier the and purchaser, the procedure given
washing and sea water when tested as described in IS 2500 ( Part 1 ) : 1992 shall be followed for
in Annex D. sampling and inspection. The inspection level
and sampling plan as given in 9.1.1. and 9.1.2
shall be followed.
7.2 Strength of Tapes
9.1.1 The scale of sampling shall be correspond-
The minimum strength for all types of tapes ing to Inspection Level III given in Table 1 of
shall be as mentioned inTable 1 when tested
IS 2500 ( Part 1 ) : 1992.
according to Annex E.
9.1.2 The sampling plan to be followed shall be
Table 1 Minimnm Strength of Hook single sampling plan corresponding to Accept-
and Loop Tape able Quality Level ( AQL ) value of 2’5 percent
given in Table IIA of IS 2500 ( Part 1 ) : 1992.
‘Me of Tape Shear Shear Peel
Strength Strength Strength 10 MARKING
( Lengthwise ) ( Widthwise )
g/cm* a/cm’ a/cm 10.1 Each package of roll(s) of the tapes shall
On any width 750 750 125 be legibly and indelibly marked with the
of hook and following:
zil:pe a) Name or trade mark indicating source of
manufacture,
b) Width and length of the tapes,
7.3 Shrinkage
c) Batch number, and
7.3.1The shrinkage of the hook tape and loop d) Month and year of manufacture.
tape in the longitudinal direction shall not exceed
3 percent and 4 percent, respectively. The 10.2 BIS Certification Marking
method of test shall be as given in Annex F.
The product may also be marked with Standard
7.4 Endurance Test Mark.

10.2.1 The use of the Standard Mark is governed

The shear strength of all types of tapes shall by the provisions of Bureau of Indian Standards
not decrease by more than 10 percent of their Act, 1986, and the Rules and Regulations made
original value, after being subjected to 5 000 thereunder. The details of conditions under
cycles of closing and opening operation, which which the licence for the use of Standard Mark
may be carried out either manually or by a may be granted to manufacturers or producers
suitable systematic motor-driven method. A may be obtained f&m the Bureau of Indian
typical motor driven schematic arrangement is Standards.
given in Annex G for guidance.
il PACKING
8 COATING
11.1 The hook and loop tape fasteners shall be
8.1The tapes shall conform to the requirements packed in the combination of equal widths and
of this specification prior to the application of lengths.
the adhesive backings.
11.2 The hook and loop tape fasteners shall be
8.2 The precoats may be activated with water, packed in rolls of 25 or 100 m as agreed to
solvents like methyl ethyl ketone, toluene, between the purchaser and the manufacturer.
 IS 8156 : 1994

ANNEX A
( Clause 4.1 )
METHOD FOR DETERMINATION OF NYLON 6.6 YARNS

A-l The material used for manufacture is dipped iii) Mixture of 25 ml formic acid and
in thefollowing reagents: ;iinl dimethylformamide ( DMF ) at.
.
i) yO&ochloric acid having specific gravity
. A-2 If the material used for manufacture is
nylon 6’6 it shall not dissolve in any of the
ii) 42 percent formic acid at lOO”C, and above reagents.

ANNEX B
( Clause 5.1.1 )
DETERMINATION OF WIDTH

B-1 Steel scale with graduation up to 0’25 mm number of readings will be taken from different
shall be used to measure the width. The steel samples ( one from each sample ) and the
scale shall be placed on the table and the sample arithmetical average shall be taken to arrive at
tape shall be laid flat perpendicular to the scale. the average width of the sample.
Width reading would be taken up to 0’25 mm. A

ANNEX C
( Cl&se 5.1.2)
DETERMINATION OF LENGTH

C-l The tape from the sample roll shs 11 be kngth or less ( see IS 1481 : 1970 ). Number of
laid flat on the table marked 5 metres leng’ h on such samples ( rolls ) would be selected has per 9.
it. The measurement in excess or short of The arithmetical average of all length shallbe
5 metres shall be made with a scale of 1 metre determined to check the length as per 5.1.2.

ANNEX D
( CIause 7.1 )

TEST FOR COLOUR FASTNESS ’

D-l ~FASTNESS TO LIGHT D-3 FASTNESS TO WASHING

D-l.1 The colour of the tapes thread shall be D-3.1 The tapes shall be fast to washing and
fast to light and when tested by the method when tested by the method prescribed in IS 765 :
prescribed in IS 2454 : 1985, its colour fastness 1979, its colour fastness for washing shall be
to light shall be of rating 3 or better. rating 3 or better. However the testing tempera-
ture shall be 70 f 2°C instead of 95 f 2oC as
prescribed in 7.1 of IS 765 : 1979.
D-2 FASTNESS TO SEA WATER
D-4 CROCKING TEST
D-2.1 The tapes shall be fast to sea water and
when tested by the method prescribed in D-4.1 Dry and Wet Crooking
IS’690 : l988, its colour fastness to sea watet
shall be rating 3 or better. A crockmeter shall be used in this test along

3
IS 8f56 : 1994

with a 50 m X 50 mm square of bleached, Soak two square cloth pieces in distilled water.
unsize%l cotton “4rabric piece. lay them between blotters and squeeze by finger.
Repeat the test as above on face and back using
Cut a piece of hook or loop tape 180 mm long. moistened cloth pieces.
Place the tape face up on the abrasive area of the
crockmeter fasten ends with suitable adhesive tape Evaluate the amount of staining on the
and/or rubber band. Fasten 5 cm x 5 cm square 5 cm X 5 cm square numerically.
cotton fabric piece on the finger tip with a
rubber band. Turn the crank so that the cloth The rating shall be 3 or better.
on the finger is rubbed over the tape a total of 5- No staining
10 times in each direction. Turn the tape over 4 - Slight staining
and attach new 50 mm X 50 mm square cotton
fabric piece. Again, turn the crank so that the 3- Definite staining
cloth is rubbed over the tape a total 10 times in 2- Bad staining
each direction. 1 - Very bad staining

ANNEX E
( Clause 7.2 )
TEST FOR SHEAR, PEEL AND TENSILE STRENGTH

E-1 Tho apparatus shall be as follows. E-3 PREPARATION OF THE TEST

SPECIMEN FOR PEEL AND SHEAR
STRENGTH TEST
E-l.1 A pendulum type tester with cam. drive
shall be used for the tests-to minimize the possi- E-3.1 Mating the Components
bility of slipping as well as for the ease of
putting the samples in the jaws. Select the same width of hook and loop tape of
the length specified in E-2.1. Place the hook
E-l.2 A constant power driven tensile testing tape ( hook side -down ) evenly and without
machine having a constant rate of loading type prossuro on tape of a corresponding equal width
the rate of which being such that the time taken of loop tape ( loop side up ). Mesh the two
to reach the load may be suitably adjusted. tapes by traversing the steel roller back and
forth across the overlap for 5 times in each
E-1.2.1 The rate of traverse shall be constant. direction. The pressure shall be applied evenly
The jaw separation speed should be 305 mm/ across the full width of the combined tapes in a
min. smooth and continuous way. The hand pressure
shall not be applied. The roller alone shall
exert the required pressure.
E-l.3 A steol roller having a diameter of 121 mm
and 57 mm wide weighing 5 kg for mating E-4 PROCEDURE FOR PEEL AND SHEAR
the tape components. STRENGTH TEST

-E-4.1 Grip one end of the free hook or loop

E-2 REQUIREMENTS OF TEST SPECIMEN tape in the upper jaw and the other end in the
lower jaw of the machine. Apply a continuous
E-2.1 The test specimen shall be as follows: increase in load to the specimen longitudinally
Size of Hook and until the specimen is loosen-ed and separated.
Type of Test Note down the reading.
Loop Tape
in mm E-4.2 The peel strength ( longitudinal ) and
shear strength (longitudinal ) shall be conducted
Peel strength 17s in the same way as mentioned in E-4.1.
Shear strength ( length-wise ) 125
E-4.3 The peel strength ( width-wise ) may be
Shear strqngth ( width-wise ) 50 conducted if specifically insisted by the purcha-
ser.

4
 IS 8156 : 1994

ANNEX Pi
( Clause 7.3.1 )
METHOD FOR DETERMINATION OF SHRINKAGE

F-l OUTLINE OF THE METHOD F-2.2 Procedure

F-l.1 Shrinkage is determined by finding the F-2.2.1 Put the sample into the washing machine
difference in longitudinal measurement before with enough household detergent to form 4
thin layer of suds and wash for 4 hours. Rinse
and after washing the specimen. The shrinkage
and dry the specimen.
shall be expressed in percentage.
F-2.2.2 Recondition the specimen at 27°C f
F-l.2 Apprratos 1°C temperature, and 65 f 2 percent relative
humidity until it reaches a constant mass (a
F-1.2.1 A suitable washing machine with a constant mass is considered to be achieved when
cylinder 535 mm in diameter rotating at measurements made at one hour intervals do
60 rev/min shall be used. The water tempera- not show a change in mass greater than 0’25,
ture of washing machine shall be maintained at percent ).
70°C f 2°C by means of an electric pad. The F-2.2.3 Measure the distance between the marks
machine shall be able to run continuously in the on the back of the tapes in the lengthwise
wash cycle for this test. direction. This shall be the laundered length.

F-2 TEST SPECIMEN F-2.2.4 Calculate the percentage shrinkage as

follows:
F-2.1 Cut about 560 mm long hook and loop
tapes of the same size and thickness. Make two Percentage shrinkage
marks 500 mm apart on the back of the tapes = Original length - Laundered length x 1oO
using the laundry mark. Original length

ANNEX G
( Clause 7.4 )
METHOD FOR ENDURANCE TEST

This machine consists of two drums mounted counter which counts the number of cycles
one on top of the other ( schematic arrangement regardless of direction of rotation. The drive
is shown in Fig. 1 ) the bottom drum is driven at from the bottom drum is imparted to thetop
60 rev/min with the direction of rotation rcvers- drum through the physical contact of the hook
cd every 30 seconds. The machine is fitted with a and loop tape fastener under test.

WEIGHTS
r

Flo. 1
6
S 8156: 1994

The bottom drum is 160 mm in diametor and it is allowable to mount two narrow
70 mm wide with a slot 55 mm long cut into the Es side by side on the drums provided the
rim for mounting the sample. The loop tafje is still loaded with 1 kilogram per
sample is mounted onto this drum free from any total width of tapes in cm.
wrinkles and creases with the stitching of the
loop being used to clamp the speeimon in place.
If due to stretching of the t,apes during cycling
The top drum is 162’5 mm in diameter and 70 mm it becomes d&cult to adjust the fUt6ncr to the
wide with a slot 55 mm long cut into the rim correct tension and position, it is permissible to
.and can rotate freely. The hbok tape is mounted stick the tapes to the drum using double iided
Sonio this drum free from Any wrinkles or creases adhesive tape.
ahd clamped in place through the slot using the
stitching of the loop. The drive from the When removing the samples from tht machine ib
bottom drum is imparted to the top drum is important to mark where the fastener passes
coutact between the hook tape and the loop through the slot to ensure that on1 there area6
Qxpi. This drum has a means of loading the worn by cycling are subsequent Yy tested for
drum with 1 kg/cm width of fastener. shear strength and peel strength.
Bureau of Indian Standards

BIS is a statutory institution established under the Bureau ofZn&n Standards Acf, I986 to promote
harmonious development of the activities of standardization, marking and quality certification of goods
and attending to connected matters in the country.

Copyright

BIS has the~copyright of all its publications. No part of these publications may be reproduced in any form
without the prior permission in writing of BIS. This does not preclude the free use, in the course of
implementing the standard, of necessary details, such as symbols and sizes, type or grade designations.
Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also
reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that
no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users
of Indian Standards should ascertain that they are in possession of the latest amendments or edition by
referring to the latest issue of ‘BIS Handbook’ and ‘Standards Monthly Additions’.

This Indian Standard has been developed from Dot No. : LM 15 ( 0028 )

Amendments Xssued Since Publication

Amend No. Date of Issue Text Affected

I

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