Regulation No. 44-04 Proposed Supplement 12

Name:Regulation No. 44-04 Proposed Supplement 12
Description:Child Restraint Systems. Proposed Supplement 12 to the 04 Series.
Official Title:Proposal for Supplement 12 to the 04 Series of Amendments to Regulation No. 44 (Child Restraint Systems).
Country:ECE - United Nations
Date of Issue:2016-09-02
Amendment Level:Original
Number of Pages:10
Vehicle Types:Component
Subject Categories:Drafts and Proposals (Historical)
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Keywords:

specimen, test, material, restraint, child, paragraph, flame, materials, annex, read, point, device, tested, surface, systems, tests, u-shaped, amend, deceleration, composite, end, frame, regulation, air, space, burner, occupant, cabinet, bench, position, requirements, compartment, time, method, system, acceleration, load, figure, centre, place, impact, rate, carried, declaration, meet, prescribed, confirming, technical, thickness, held

Text Extract:

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ECE/TRANS/WP.29/2016/101 and /102
PROPOSAL FOR SUPPLEMENT 12 TO THE 04 SERIES OF
AMENDMENTS TO
REGULATION NO. 44
(CHILD RESTRAINT SYSTEMS)
ADOPTED AT THE 170 SESSION – NOVEMBER 2016
PROVISIONAL DATE OF ENTRY INTO FORCE: JUNE 22, 2017

Paragraphs 6.1.5. and 6.1.6., amend to read
"6.1.5. The Child Restraint System manufacturer shall declare in writing that the toxicity of
materials used in the manufacture of restraint systems and accessible to the
restrained child is in conformity with the relevant parts of EN 71-3:2013+A1:2014
(Paragraph 4.2., Table 2, Category III for specific requirements and Paragraph 7.3.3.
for test methodology). Tests confirming the validity of the declaration may be carried
out at the discretion of the Technical Service. This paragraph does not apply to
restraint devices of groups II and III.
6.1.6. The flammability of Child Restraint Systems submitted for approval shall be assessed
by one of the following methods:
Method 1 is applicable only to non-built-in Child Restraint Systems and Method 2 is
applicable only to vehicle specific built-in Child Restraint Systems.
Method 1
The Child Restraint System manufacturer shall declare in writing that the flammability
of materials used to manufacture the Child Restraint System is in conformity with the
method of Section 5.4 of EN 71-2:2011+A1:2014 with a maximum rate of spread of
flame of 30mm/s. Tests confirming the validity of the declaration may be carried out at
the discretion of the Technical Service. Where fabrics are assembled together, these
shall be tested as a composite.
"Composite material" means a material composed of several layers of similar or
different materials intimately held together at their surfaces by cementing, bonding,
cladding, welding, etc. In such a case, the material shall be tested as a composite.
When different materials are connected together intermittently, such materials shall
not be considered as composite materials and therefore tested separately.
Tests confirming the validity of the declaration may be carried out at the discretion of
the Technical Service.
Method 2
The applicant shall declare in writing that when testing materials in accordance with
Annex 24 of this regulation, the materials used shall not burn, nor transmit a flame
front across its surface, at a rate of more than 100mm per minute. Each material used
in a child restraint system shall conform to these requirements. However, the
requirement concerning transmission of a flame front shall not apply to a surface
created by cutting a test specimen for purposes of testing pursuant to Annex 24.
The requirements shall be met in both the "in-use" and in the "stowed" positions of
the built-in Child Restraint System.
If a material stops burning before it has burned for 60s from the start of timing, and
has not burned more than 51mm from the point where the timing was started, it shall
be considered to meet the burn-rate requirement specified above.
Tests confirming the validity of the declaration may be carried out at the discretion of
the Technical Service."

Paragraphs 8.3. to 8.3.3., amend to read:
"8.3. Certification of Test Bench Cushion
8.3.1. The test bench cushion shall be certified when new to establish initial values for
impact peak deceleration, and then after every 50 dynamic tests or at least every
month, whichever is the sooner.
8.3.2. The certification and measuring procedures shall correspond to those specified in the
latest version of ISO 6487; the measuring equipment shall correspond to the
specification of a data channel with a channel filter class (CFC) 60.
Using the test device defined in Annex 17 to this Regulation, conduct 3 tests on the
bench base prepared as described in Annex 6, foam covered with textile, 150 ± 5mm
from the front edge of the cushion on the centre line and at 150 ± 5mm in each
direction from the centre line.
Place the bench cushion on a flat rigid surface. Place the device vertically above the
test point, at a height of 500 ± 5mm and allow it to fall freely to make impact on the
seat surface. Record the deceleration curve.
8.3.3. The initial peak recorded values for impact deceleration shall be 18 ± 3g and
subsequent peak values recorded shall not deviate by more than 15% from the initial
values."
Paragraph 9.1., amend to read:
"9.1. The test report shall record the results of all tests and measurements including the
following test data:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
The type of device used for the test (acceleration or deceleration device),
The total velocity change,
The trolley speed immediately before impact only for deceleration sleds,
The acceleration or deceleration curve during all the velocity change of the
trolley and at least 300ms,
The time (in ms) when the head of the manikin reaches its maximum
displacement during the performance of the dynamic test,
The following dummy criteria: Resultant Chest acceleration, Vertical Chest
acceleration, and their cumulative time duration above prescribed limits
The place occupied by the buckle during the tests, if it can be varied, and
The name and address of the laboratory where tests have been performed
And any failure or breakage."

Annex 23, amend to read:
"ANNEX 23

Load Application Device II
…"

3.2. Prior to testing, each specimen is conditioned for 24h at a temperature of 21°C, and a relative
humidity of 50%, and the test is conducted under those ambient conditions.
3.3. The test specimen is inserted between two matching U-shaped frames of metal stock 25mm
wide and 10mm high.
The interior dimensions of the U-shaped frames are 51mm wide by 330mm long.
A specimen that softens and bends at the flaming end so as to cause erratic burning is kept
horizontal by supports consisting of thin, heat-resistant wires, spanning the width of the
U-shaped frame under the specimen at 25mm intervals.
A device that may be used for supporting this type of material is an additional U-shaped frame,
wider than the U-shaped frame containing the specimen, spanned by 10-mil wires of
heat-resistant composition at 25mm intervals, inserted over the bottom U-shaped frame.
3.4. A bunsen burner with a tube of 10mm inside diameter is used.
The gas adjusting valve is set to provide a flame, with the tube vertical, of 38mm in height. The
air inlet to the burner is closed.
3.5. The gas supplied to the burner has a flame temperature equivalent to that of natural gas.
4. PREPARATION OF SPECIMENS
4.1. Each specimen of material to be tested shall be a rectangle 102mm wide by 356mm long,
wherever possible.
The thickness of the specimen is that of the single or composite material used in the vehicle,
except that if the material's thickness exceeds 13mm, the specimen is cut down to that
thickness measured from the surface of the specimen closest to the occupant compartment air
space.
Where it is not possible to obtain a flat specimen because of surface curvature, the specimen is
cut to not more than 13mm in thickness at any point.
The maximum available length or width of a specimen is used where either dimension is less
than 356mm or 102mm.
4.2. The specimen is produced by cutting the material in longitudinal as well as transvers direction.
The specimen is oriented so that the surface closest to the occupant compartment air space
faces downward on the test frame.
4.3. Material with a napped or tufted surface is placed on a flat surface and combed twice against
the nap with a comb having seven to eight smooth, rounded teeth per 25mm.
5. TEST
5.1. Mount the specimen so that both sides and one end are held by the U-shaped frame, and
specimen is not more than 51mm, so that the sides of the specimen cannot be held in the
U-shaped frame, place the specimen in position on wire supports as described in 2.3, with one
end held by the closed end of the U-shaped frame.

Child Restraint Systems. Proposed Supplement 12 to the 04 Series.