EN 17333-1:2020

Characterisation of one component foam - Part 1: Foam yield characteristics

This document specifies test methods for the evaluation of the foam yield characteristics 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 - Determination of the apparent density of an OCF extruded in a joint and calculation of the theoretical foam yield in running meters of the whole can.
-   Method 2 - Determination of the real yield of cured foam, respecting eventual cavities inside the foam structure.
-   Method 3 - Determination of the free foamed density of a cured OCF for identification purposes only.
-   Method 4 - Determination of the total foam yield for the whole OCF container for moisture and self-curing foam that can be measured by water displacement.

Charakterisierung von Einkomponentenschäumen - Teil 1: Schaumausbeute

Dieses Dokument legt Prüfverfahren für die Beurteilung der Schaumausbeute von feuchtigkeitshärtenden, selbst¬härtenden aktivierbaren oder wassertrocknenden Schäumen fest, die aus einzelnen Schaumdruckdosen abgegeben werden.
Dieses Dokument beansprucht nicht, sämtliche mit seiner Anwendung verbundenen Sicherheitsprobleme, soweit diese gegeben sind, zu behandeln. Es liegt in der Verantwortung des Anwenders dieses Dokuments, angemessene Maßnahmen in Bezug auf den Gesundheits  und Arbeitsschutz einzuleiten und die Anwendbarkeit gesetzlicher Anforderungen vor ihrer Anwendung zu ermitteln.
Die folgenden Prüfverfahren werden beschrieben:
-   Verfahren 1 - Bestimmung der Rohdichte eines in eine Fuge extrudierten OCF und Berechnung der theoretischen Schaumausbeute der gesamten Druckdose in laufenden Metern.
-   Verfahren 2 - Bestimmung der tatsächlichen Ausbeute von ausgehärtetem Schaum unter Beachtung möglicher Hohlräume in der Schaumstruktur.
-   Verfahren 3 - Bestimmung der Dichte des freigeschäumten Schaums eines ausgehärteten OCF ausschließlich zu Identifizierungszwecken.
Verfahren 4 - Bestimmung der Gesamtschaumausbeute für die gesamte OCF-Druckdose für feuchtigkeitshärtenden und selbsthärtenden Schaum, was durch Wasserverdrängung gemessen werden kann.

Caractérisation des mousses monocomposants - Partie 1 : Caractéristiques de rendement des mousses

Le présent document spécifie des méthodes d’essai permettant d’évaluer les caractéristiques de rendement des mousses durcissant à l’humidité, des mousses autopolymérisables et des mousses séchant dans l’eau, appliquées à partir de récipients individuels de mousse sous pression.
Le présent document ne prétend pas aborder la totalité des problèmes de sécurité qui pourraient découler de son utilisation. Il est de la responsabilité de l’utilisateur du présent document de respecter des pratiques de sécurité et de santé appropriées et de déterminer l’applicabilité des exigences réglementaires avant son utilisation.
Les méthodes d’essai suivantes sont décrites :
-   Méthode 1 - Détermination de la masse volumique apparente d’une mousse monocomposant extrudée dans un joint et calcul du rendement théorique d’une mousse, exprimé en mètres linéaires, de la totalité du récipient individuel de mousse ;
-   Méthode 2 - Détermination du rendement réel d’une mousse durcie, en respectant les cavités éventuelles à l’intérieur de la structure en mousse ;
-   Méthode 3 - Détermination de la masse volumique d’une mousse monocomposant librement expansée durcie aux seules fins d’identification ;
-   Méthode 4 - Détermination du rendement total d’une mousse monocomposant formée à partir du récipient complet, durcissant à l’humidité ou autopolymérisable, qui peut être mesuré par un déplacement d’eau.

Karakterizacija enokomponentnih pen - 1. del: Značilnosti izkoristka pene

General Information

• Status: Published
• Publication Date: 17-Mar-2020
• Withdrawal Date: 29-Sep-2020
• ICS: 83.180 - Adhesives
• Technical Committee: CEN/TC 193 - Adhesives
• Drafting Committee: CEN/TC 193/WG 8 - One Component Foam (OCF)
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Sep-2025
• Completion Date: 02-Sep-2025
• Ref Project: SIST EN 17333-1:2020 - Characterization of One Component Foam - Part 1: Foam yield characteristics

Overview

EN 17333-1:2020 - "Characterisation of one component foam - Part 1: Foam yield characteristics" (CEN) defines standardized test methods to evaluate foam yield characteristics of one component foams (OCF) dispensed from single pressurized foam containers. It covers moisture‑curing, self‑curing activatable and water‑drying foams supplied in cans for straw or gun application. The standard specifies four test methods to quantify apparent and real yields, identify free‑foamed density, and measure total foam yield by water displacement. Note: the standard does not replace safety or regulatory assessments; users remain responsible for safe handling.

Key topics

• Scope and foam types: Moisture curing, self‑curing activatable, and water drying OCFs dispensed from single pressurized containers (straw or gun).
• Method 1 - Joint foamed density & theoretical yield: Dispense foam into a defined joint (e.g., gypsum board mould), measure mass and volume to calculate joint foamed density and theoretical longitudinal yield.
• Method 2 - Real (total) yield: Empty a full test container into a defined receptacle and determine cured foam volume accounting for internal cavities.
• Method 3 - Free foamed density (identification): Determine density of cured foam expanded without physical constraint for identification purposes only.
• Method 4 - Total foam yield by water displacement: Measure total yield for moisture and self‑curing foams using water displacement of cured foam.
• Test conditions & equipment: Includes sampling, conditioning at (23 ± 2) °C and (50 ± 5) % RH, use of weighing scales, moulds/boards, and water displacement apparatus where applicable.
• Results & reporting: Specifies how to express joint density, longitudinal yield, and required test report contents (test conditions, product identification, deviations).

Applications

EN 17333-1:2020 is practical for:

• Manufacturers - product development and batch quality control of one component foams.
• Independent testing laboratories - standardized measurement of foam yield for data sheets and performance verification.
• Specifiers and procurement teams - comparing foam yield claims for building, sealing, insulation and installation applications.
• R&D and formulation teams - evaluating how dispensing method (gun vs straw) and curing type affect final yield and density. Practical benefits include consistent measurement of foam yield, better material selection, and reproducible test data for technical documentation.

Related standards

• EN 17333 series (Parts 2–5): Expansion characteristics, Application, Mechanical strength, Insulation.
• Normative references in EN 17333-1: EN 923 (Adhesives - terms), EN 14847 and EN 15006 (pressurised foam container dimensions).

Keywords: EN 17333-1:2020, one component foam, OCF, foam yield characteristics, joint foamed density, free foamed density, water displacement, test methods, CEN.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2020
Karakterizacija enokomponentnih pen - 1. del: Značilnosti izkoristka pene
Characterization of One Component Foam - Part 1: Foam yield characteristics
Charakterisierung von Einkomponentenschäumen - Teil 1: Ausbeute
Caractérisation des mousses monocomposants - Partie 1 : Rendement
Ta slovenski standard je istoveten z: EN 17333-1:2020
ICS:
83.180 Lepila Adhesives
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17333-1
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 83.180
English Version
Characterisation of one component foam - Part 1: Foam
yield characteristics
Caractérisation des mousses monocomposants - Partie Charakterisierung von Einkomponentenschäumen -
1 : Caractéristiques de rendement des mousses Teil 1: Schaumausbeute
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 17333-1:2020 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 – Joint foamed density and foam yield . 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 . 9
4.1.6 Test report . 9
4.2 Method 2 – Total foam yield . 10
4.2.1 Principle . 10
4.2.2 Equipment . 10
4.2.3 Sampling . 11
4.2.4 Test procedure . 11
4.2.5 Expression of results . 12
4.2.6 Test report . 12
4.3 Method 3 – Free foamed density . 13
4.3.1 Principle . 13
4.3.2 Equipment . 13
4.3.3 Sampling . 13
4.3.4 Test procedure . 14
4.3.5 Expression of results . 15
4.3.6 Test report . 15
4.4 Method 4 – Determination of foam yield by water displacement. 16
4.4.1 Principle . 16
4.4.2 Equipment . 16
4.4.3 Sampling . 16
4.4.4 Test procedure . 17
4.4.5 Expression of results . 18
4.4.6 Test report . 18
Bibliography . 20
European foreword
This document (EN 17333-1:2020) 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 (this document);
— Part 2: Expansion characteristics;
— Part 3: Application;
— 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 foam yield characteristics 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 – Determination of the apparent density of an OCF extruded in a joint and calculation of
the theoretical foam yield in running meters of the whole can.
— Method 2 – Determination of the real yield of cured foam, respecting eventual cavities inside the
foam structure.
— Method 3 – Determination of the free foamed density of a cured OCF for identification purposes
only.
— Method 4 – Determination of the total foam yield for the whole OCF container for moisture and self-
curing foam that can be measured by water displacement.
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
free foamed density
density of cured foam after expanding without physical constraints
3.3
joint foamed density
mass per unit volume of cured foam after expanding in a joint
3.4
joint
void into which froth is dispensed
3.5
joint foam yield
length of a joint with pre-defined dimensions, that may be filled by the froth extruded from single
pressurized foam container
3.6
pressurised foam container
pressurised can according to EN 14847 and EN 15006
3.7
test container
pressurised can according to EN 14847 and EN 15006 used for testing purposes
3.8
self-curing activatable foam
one component foam with internal cartridge containing reactive components
3.9
fully cured or dried foam
cross-linked foam which reaches its serviceable properties as claimed by the manufacturer
3.10
straw foam
one component or two component foam for the extrusion with an adapter tube
3.11
gun foam
one component foam for the extrusion with a foam application gun
4 Test methods
4.1 Method 1 – Joint foamed density and foam yield
4.1.1 Principle
The foam is dispensed into a joint with fixed dimensions. The joint foamed density of the cured foam is
calculated using the weight and volume of the foam. The theoretical joint foam yield is calculated by
measuring the amount sprayed.
NOTE Joint density can differ from the free foamed density determined by Method 3 in 4.3.
4.1.2 Equipment
For each joint:
4.1.2.1 2 gypsum boards, with dimensions 420 mm × 100 mm × 12,5 mm.
4.1.2.2 2 spacers, not water absorbing, not adherent (e.g. polyethylene (PE),
polytetrafluoroethylene (PTFE), on which polyurethane (PU) does not adhere), dimensions:
100 mm × 30 mm × 30 mm.
4.1.2.3 Joint mould of inner dimensions 360 mm × 100 mm × 30 mm.
4.1.2.4 Uncoated paper, recommended A3 typewriter
Additional tools:
4.1.2.5 Weighing scale with an accuracy of ±0,1 g.
4.1.2.6 Sharp and clean knife blade.
4.1.2.7 Conditioning chamber capable of being controlled at (23 ± 2) °C and (50 ± 5) % RH.
4.1.3 Sampling
4.1.3.1 Conditioning
The test conditions shall be (23 ± 2) °C and (50 ± 5) % relative humidity unless indicated otherwise.
Bring the test container, gypsum board and paper to the test conditions for at least 24 h.
4.1.3.2 Test pieces
A minimum of three samples shall be subjected to the tests given in this section to obtain accurate
measurements of material properties.
4.1.4 Test procedure
a) Build three horizontal joints using the gypsum boards and spacers (see Figures 1 to 3). The inner
dimensions of each joint shall be minimum 360 mm × 100 mm × 30 mm.
b) Weigh the paper w and insert the sheets in the joints.
p
c) Mount the dispenser tool on the test container and note the initial test container mass with the
dispenser tool (m ).
i
d) Do not pre-moisten the joint.
e) Shake an unused test container vigorously 20 times and discard the first (40 ± 10) g of foam. Weigh
the test container with the dispenser tool again and note the mass m .
f) Fill the first joint according to manufacturer’s instruction whilst avoiding overexpansion. Typical
filling levels are (80 ± 10) % of joint height for g
...