EN 17333-3:2020

SLOVENSKI STANDARD
01-junij-2020
Karakterizacija enokomponentnih pen - 3. del: Uporaba
Characterization of One Component Foam - Part 3: Application
Charakterisierung von Einkomponentenschäumen - Teil 3: Anwendung
Caractérisation des mousses monocomposants - Partie 3 : Application
Ta slovenski standard je istoveten z: EN 17333-3:2020
ICS:
83.180 Lepila Adhesives
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17333-3
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 83.180
English Version
Characterisation of one component foam - Part 3:
Application
Caractérisation des mousses monocomposants - Partie Charakterisierung von Einkomponentenschäumen -
3 : Application Teil 3: Anwendung
This European Standard was approved by CEN on 1 December 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17333-3:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Test methods . 5
4.1 Method 1 – Cutting time . 5
4.1.1 Principle . 5
4.1.2 Equipment . 5
4.1.3 Sampling . 6
4.1.4 Test procedure . 6
4.1.5 Expression of results . 7
4.1.6 Test report . 7
4.2 Method 2 – Tack free time . 8
4.2.1 Principle . 8
4.2.2 Equipment . 8
4.2.3 Sampling . 8
4.2.4 Test procedure . 9
4.2.5 Evaluation and expression of results . 9
4.2.6 Test report . 9
4.3 Method 3 – Sagging . 10
4.3.1 Principle . 10
4.3.2 Equipment . 10
4.3.3 Sampling . 10
4.3.4 Test procedure . 11
4.3.5 Expression of results . 12
4.3.6 Test report . 13
Bibliography . 15

European foreword
This document (EN 17333-3:2020) has been prepared by Technical Committee CEN/TC 193
“Adhesives”, the secretariat of which is held by UNE.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2020, and conflicting national standards
shall be withdrawn at the latest by September 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is one of the product European Standards within the framework series of EN 17333 on
Characterization of one component foam, as follows:
— Part 1: Foam yield characteristics;
— Part 2: Expansion characteristics;
— Part 3: Application (this document);
— Part 4: Mechanical strength;
— Part 5: Insulation.
This document is one of a series of standards which specify test methods for determining the properties
of one component foams (OCFs).
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
This document specifies test methods for the evaluation of the application properties for moisture
curing, self-curing activatable or water drying foams dispensed from single pressurized foam
containers.
This document does not purport to address all of the safety concerns, if any, associated with its use. It is
the responsibility of the user of this document to establish appropriate safety and health practices and
determine the applicability of regulatory requirements prior to use.
The following test methods are described:
— Method 1 – Cutting time: This test method describes how to determine the hardening time of a
dispended froth until it could be cut.
— Method 2 – Tack free time: This test method describes how to determine the tack free time of a
freshly foamed OCF.
— Method 3 – Sagging: This test method describes how to evaluate the sagging behaviour and
determine the biggest joint possible before dispensed froth slips off.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 923, Adhesives - Terms and definitions
EN 15006, Metal aerosol containers - Aluminium containers - Dimensions of the 25,4 mm aperture
EN 14847, Aerosol containers - Tinplate containers - Dimensions of the 25,4 mm aperture
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 923 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/ui
— IEC Electropedia: available at http://www.electropedia.org/
3.1
one component foam
(OCF)
moisture curing or water drying foam as well as self-curing activatable foam dispensed from a single
pressurised foam container
3.2
pressurised foam container
pressurised can according to EN 14847 and EN 15006
3.3
test container
pressurised can according to EN 14847 and EN 15006 used for testing purposes
3.4
fully cured or dried foam
cross-linked foam which reaches its serviceable properties as claimed by the manufacturer
3.5
cutting time
time necessary after application to achieve a stage in which the bead of the foam could be cut without
deforming the structure
3.6
tack free time
time that surface tack is no longer detectable
3.7
straw foam
one component or two component foams for the extrusion with an adapter tube
3.8
gun foam
one component foams for the extrusion with a foam application gun
3.9
sagging
tendency of freshly applied foam to collapse in or flow out of the joint before reaching its cured stage
Note 1 to entry: Sagging behaviour is dependent on temperature of both the canister, the environment and the
dimensions of the joint, particularly vertical joints.
4 Test methods
4.1 Method 1 – Cutting time
4.1.1 Principle
The liquid foam is dispensed in defined beads on a horizontal surface. After a certain time for curing, the
bead is cut. The cutting time is reached when the cut surface is not sticky anymore, the knife remains
clean without foam residues and the foam is not squeezed.
NOTE The measured value depends strongly on the dispensed bead diameter as well as the humidity,
temperature and the processing and tools. The cutting time gives an indication about the water transport inside
the foam body, therefore about the foam quality.
4.1.2 Equipment
4.1.2.1 Sharp and clean knife blade.
4.1.2.2 Stopwatch.
4.1.2.3 Paper or cardboard.
4.1.2.4 Conditioning chamber capable of being controlled at a temperature of (23 ± 2) °C and
(50 ± 5) % relative humidity (RH).
4.1.2.5 Template with a window of 30 mm height and approximately 60 mm width (see Figure 1).
4.1.3 Sampling
4.1.3.1 Conditioning
Bring the test container to the test temperature for at least 24 h.
4.1.4 Test procedure
a) Shake an unused test container vigorously 20 times.
b) Discard the first (40 ± 10) g of foam.
c) Extrude at least 3 beads of fresh foam on the paper or cardboard and start the stopwatch,
maintaining at least 50 mm between each bead and a maximum bead height of 30 mm (see
Figure 2).
d) Indicative times after which it is recommended to start the measurements are 15 min for moisture
curing foam, 5 min for self-curing activatable foam and 24 h for water drying foam.
e) Test conditions: (23 ± 2) °C and (50 ± 5) % RH. The test may also be performed under other
conditions. The selected test conditions shall be part of the report.
f) Find 30 mm diameter bead by template (see Figure 3) and cut it in this place. Do not “saw” the
foam, cut it in one or two steps at a fast pace.
g) If fresh foam remains on the knife, or the foam is crushed, the foam is still not cured.
h) Clean the knife.
i) Wait for another five minutes and try to cut again, but in another bead to avoid impact on the foam
due to the cut surface.
j) Repeat steps b) to e), until the foam is not crushed by the knife. Also the bead shall stay in shape.
NOTE Flexible foams may be difficult to assess.

Figure 1 — Template
Figure 2 — Beads on the cardboard

Figure 3 — How to find 30 mm diameter bead
4.1.5 Expression of results
The result is expressed in minutes to the nearest full 5 min.
4.1.6 Test report
The test report shall include the following information:
a) reference to this document;
b) the name and address of the testing laboratory;
c) the number and date of the test report;
d) the name and signature of the person
...