EN 1957:2012

SLOVENSKI STANDARD
01-december-2012
1DGRPHãþD
SIST EN 1957:2001
3RKLãWYR3RVWHOMHLQSRVWHOMQLYORåNL3UHVNXVQHPHWRGH]DXJRWDYOMDQMH
IXQNFLRQDOQLK]QDþLOQRVWLLQNULWHULMLRFHQMHYDQMD
Furniture - Beds and mattresses - Test methods for the determination of functional
characteristics and assessment criteria
Möbel - Betten und Matratzen - Prüfverfahren zur Bestimmung der funktionellen
Eigenschaften
Meubles - Lits et matelas - Méthodes d'essai pour la détermination des caractéristiques
fonctionnelles
Ta slovenski standard je istoveten z: EN 1957:2012
ICS:
97.140 Pohištvo Furniture
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1957
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2012
ICS 97.140 Supersedes EN 1957:2000
English Version
Furniture - Beds and mattresses - Test methods for the
determination of functional characteristics and assessment
criteria
Meubles - Lits et matelas - Méthodes d'essai pour la Möbel - Betten und Matratzen - Prüfverfahren zur
détermination des caractéristiques fonctionnelles et critères Bestimmung der funktionellen Eigenschaften und
d'évaluation Leistungskriterien
This European Standard was approved by CEN on 18 August 2012.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1957:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 General test conditions .5
4.1 Preliminary preparation .5
4.2 Tolerances .5
4.3 Sequence of testing .5
5 Test apparatus .6
5.1 Floor surface .6
5.2 Stops .6
5.3 Standard test bed base for mattresses (durability test) .6
5.4 Side support profile .6
5.5 Standard table/test board (measuring) .7
5.6 Loading pad .7
5.7 Equipment for recording the load/deflection curves .8
5.8 Equipment for the durability test .8
6 Functional characteristics .9
6.1 Measurable functional characteristics .9
6.2 Visual inspection .9
7 Test methods . 10
7.1 General . 10
7.2 Durability test . 10
7.3 Load/deflection curve . 10
8 Evaluation of characteristic parameters . 11
8.1 Determination of height loss . 11
8.2 Determination of hardness value . 11
8.3 Determination of firmness rating . 12
9 Durability of bed edge . 13
10 Test report . 13
Annex A (informative) Basis of determination of firmness rating . 14

Foreword
This document (EN 1957:2012) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the
secretariat of which is held by UNI.
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 April 2013, and conflicting national standards shall be withdrawn at the
latest by April 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1957:2000.
The main change with respect to the previous edition is the correcting of the dimensions of the roller (Figure 3)
to enable the roller to be manufactured.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
1 Scope
This European Standard specifies test methods for the determination of the durability and hardness of
mattresses and all types of fully erected beds with mattresses (and mattress pads when they form a unit with
the mattress). It does not apply to water beds, air beds and children cots.
It includes a method for the determination of the firmness rating of a mattress or a bed correlating to the
subjective assessment made by people (see Annex A). It needs to be emphasized that the firmness rating
cannot be used to demonstrate comfort and/or quality of a mattress or a complete bed.
Ageing and degradation caused by air, light, humidity and temperature is not included. The test results are
only valid for the article tested. When test results are intended to be applied to other similar articles, the test
specimen shall be representative of them.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 1334, Domestic furniture — Beds and mattresses — Methods of measurement and recommended
tolerances
EN 1725:1998, Domestic furniture — Beds and mattresses — Safety requirements and test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
test unit
mattress or mattress/bed combination
3.2
durability test
test simulating the repeated application of loads and/or movement of components occurring during long-term
use and assessing the strength of the article under such conditions and is a test is a procedure mainly
intended to evaluate the change of the properties of the test unit caused by repeated loadings
3.3
load/deflection curve
curves that are obtained by pressing a load pad into the test unit and measuring the associated value of
indentation and force simultaneously
3.4
hardness value (H)
determined from load/deflection measurement, in N/mm
3.5
firmness rating (H )
s
expression of the subjective assessment by persons determined from the hardness value upon results from
empiric studies
3.6
height loss
change in the height of a test unit, in mm, caused by the durability test
4 General test conditions
4.1 Preliminary preparation
Unless otherwise specified by the manufacturer, the test unit shall be conditioned for at least one week in a
standardised climate of (23 ± 2) °C and (50 ± 5) % RH immediately prior to testing. Subsequent conditioning
shall also take place in this climate.
The tests shall be carried out at indoor ambient conditions but if during a test the temperature is outside the
range 15 °C to 25 °C the maximum and/or minimum temperature shall be recorded in the test report.
During conditioning and handling, mattresses shall be kept flat and unloaded.
If a test cannot be carried out as specified in this European Standard, e.g. because a loading pad cannot be
used for the application of a force due to the design of a product, the test shall be carried out as far as
possible as specified.
Complete beds shall be tested as delivered. Knock-down type beds shall be assembled according to the
instruction supplied with the test unit. If the test unit can be assembled or combined in different ways, the most
adverse combination shall be used for the test. Knock-down fittings shall be tightened before testing.
If necessary, mattress pads shall be prevented from moving during testing by a suitable means, e.g. adhesive
tape or pins.
In cases where bed bases are adjustable in hardness, the setting during the test shall be recorded in the test
report.
If the production information states that the mattress has a soft side and a firm side, both sides shall be tested
using separate mattresses.
4.2 Tolerances
Unless otherwise stated the following tolerances are applicable to the test equipment:
a) all forces shall have an accuracy of ± 5 % of the nominal force;
b) all masses an accuracy of ± 0,5 % of the nominal mass;
c) all dimensions an accuracy of ± 1 mm of the nominal dimension;
d) the tolerance for position of loading pads shall be ± 5 mm.
NOTE For the purposes of uncertainty measurement, test results are not considered to be adversely affected when
the above tolerances are met.
4.3 Sequence of testing
All tests shall be carried out on the same test unit and in the following sequence:
a) conditioning, at least one week (according to 4.1);
b) durability pre-conditioning: 100 cycles (according to 7.2);
c) conditioning, at least 5 h (according to 4.1);
d) measurement of unit height (according to 8.1) at 100 cycles and hardness measurement (according to 7.3
and 8.2) beginning within 5 min from moving the mattress from the standardised climate (according to
4.1);
e) durability test : 29 900 cycles (according to 7.2);
1)
f) conditioning, at least 5 h (according to 4.1) ;
g) determination of hardness (according to 8.2) and height loss between 100 cycles and after the test
(according to 8.1);
h) bed edge test:
1) durability test at 100 cycles (according to Clause 9);
2) measurement of unit height at 100 cycles (according to 8.1);
3) durability test on bed edge: 4 900 cycles (according to Clause 9);
4) measurement of unit height and height loss (according to 8.1).
5 Test apparatus
5.1 Floor surface
Rigid, horizontal and flat.
5.2 Stops
Stops shall be used to prevent a complete bed or bed frame from sliding but not t
...