ISO 7322:1986

International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEIK&YHAPO,lJHAR OPTAHU3AWR fl0 CTAHJlAPTl43AL&lM.ORGANISATlON INTERNATIONALE DE NORMALISATION
Cork - Composition cork -‘Test methods
Li&ge - Agglom&h composh - MSthodes d’essai
First edition - 1986-04-15
Ref. No. ISO 7322-1986 (E)
UDC 674.833 : 620.1
Descriptors : cork, tests, determination, thickness, bulk density, tensile strength, compressibility, water resistance tests, acid resistance tests.
Price based on 3 pages

---------------------- Page: 1 ----------------------
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. Esch 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the ISO Council. They are approved in accordance with ISO procedures requiring at
least 75 % approval by the member bodies voting.
International Standard ISO 7322 was prepared by Technical Committee ISO/TC 87,
Cot-k.
Users should note that all International Standards undergo revision from time to time
and that any reference made herein to any other International Standard implies its
latest edition, unless otherwise stated.
0
0 International Organkation for Standardization, 1986
Printed in Switzerland

---------------------- Page: 2 ----------------------
ISO 73224986 (EI
INTERNATIONAL STANDARD
Test methods
Cork
- Composition cork -
38 . Device for hydrochloric acid test, equipped with
1 Scope and field of application
This International Standard specifies the test methods to be
3.8.1 Flask, of fire-resistant glass.
used for the determination of the following characteristics of
apparent density, tensile
composition cork : thickness,
3.8.2 Reflux condenser.
strength, compressibility and recovery, resistance to boiling
water, and behaviour in boiling hydrochloric acid.
3.8.3 Heating device with thermostat.
2 Reagent
. Metal ruler, graduated in 0,5 mm.
39
Hydrochlorit acid, 1,17 g/ml < ,020 < 1,19 g/ml.
3.10 Cutting dies.
3 Apparatus
4 Test pieces
Ordinary laboratory apparatus, and
4.1 Preparation
Balance, accurate to 0,Ol g.
3.1
Use the dies (3.10) to tut test pieces from each sheet or slab to
be tested at the edges and in the middle of the Sample, accord-
3.2 Chronometer.
ing to the table.
3.3 Conditioning chamber, with adjustable temperature
4.2 Conditioning
and humidity
Unless otherwise specified, tests shall be carried out at ambient
temperature, on test pieces conditioned in the chamber (3.3)
3.4 Static load press, with flat parallel plates of dimensions
for 24 h at 20 &- 2 OC and 65 + 5 % relative humidity.
greater than those of the test pieces and equipped with
3.4.1 Cylindrical indentor, made of steel, 28,2 mm in
5 Tests
diameter (625 mm2 surface), fitted on the movable head.
5.1 Thickness
3.4.2 Dial micrometer, accurate to 0,Ol mm, attached to
the movable head and giving by direct reading the thickness of
If the thickness of the test piece is less than 10 mm, use the
the compressed material.
press (3.6) to determine the thickness. Place the test piece on
the base-plate of the press (3.41, apply the indentor to the
Weights, for adjusting the load applied by the mobile
3.4.3 centre for 15 s under a load of 7 kPa, and then read the
head.
thickness on the micrometer (3.4.2).
If the thickness of the test piece is greater than 10 mm, carry
3.5 Vernier gauge, accurate to 0,l mm.
out the determination with the vernier gauge (3.5).
3.6 Tensile testing machine, accurate to 1 N, with one
The thickness of the Sample is the average of the results ob-
fixed jaw and one mobile jaw, 12 mm apart The mobile jaw
tained for the nine test pieces tested.
shall move unloaded at a Speed of 300 mm/min.
Express the results in millimetres rounded off to the nearest
0,l mm.
3.7 Open Container, for water.
1

---------------------- Page: 3 ----------------------
ISO 73224986 (EI
Dimensions and number of test pieces
Table -
Dimensions of
Test test pieces Number of test pieces Remarks
mm
9
Use the test pieces
used for the
thickness test.
Tensile strength Use the test pieces
used for the apparent
density test.
Compressibility and 50 x 50 See 5.4.1.
recovery or
cylindrical having
a Cross-sectional
area of 625 mm2
3 for each fluid
...