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DBL_5471_2007-05

May 2007

Mercedes-Benz Supply Specification

Trim and molded padded parts for vehicle

interiors (composite parts) DBL 5471 BQF available

Additional DaimlerChrysler Standards required:

DBL 5306, DBL 5307, DBL 8585, MB Special Terms .

Supersedes edition: 03.2000 Refer to Section Changes: Page 5

Fortsetzung Seite 2 bis 9Issued by: DaimlerChrysler AG

70546 Stuttgart Standards (GR/EQS) Technical responsibility (name): H?fel

Department: PWT/VWK Plant: 050 Phone: +49(0)7031 90 83298 HPC: F105 Technical coordination by PWT Plant 59, Department PWT/VWK Name: Dr. Schuh Telephone +49(0)7031 90 44270

In case of doubt, the German language original should be consulted as the authoritative text.

Overview of product versions:

Table 1

All product versions up to PV 89 not for new designs

For technical data, if required, refer to DBL 5471, edition March 2000

Product versions Solar irra-diation Temperature exposure

Examples

(The PV indicated on the drawing shall apply) .90 is replaced by PV 95

.91 is replaced by PV 92

.92 partly 90°C -

- - - - - - - - - - - - - - - - - - - - Trim rear space Roadster Roof grab handles

Center armrests

Door arm rests, door handles, door pocket lids

Trim station wagon trunk complete

Seat gap cover inside

Mirror triangle

Edge guards

Tunnel trim

Housing with stowage tray

Trim for commercial vehicle cab (e.g. roof trim)

Sun visors

Instrument panel lower parts (knee bolster)

A, B, C pillar trim

Head restraint driver

Door trim with waistline

Seat cushion, seat backrests

Roof frame trim, roof frame elements convertible

Molded ceiling, sliding sunroof

Glove box lid

Air bag assy

.93 is replaced by PV 92

.94 full 120 °C -

- - Instrument panel upper section Rear shelf and speaker grille

Rear head restraint

.95 without 80°C -

- - -

Trunk lining Seat facings, seat gap covers outside, driver's backrest lining

Floor area occupant compartment, footrest

Door pockets, central door panels, in-door speaker grilles

Note:

In the case of systems (assemblies), the PV with the higher temperature shall be selected for testing.

DBL 5470 has been superseded by DBL 5471 (05.92).

Page 2

DBL 5471 : May 2007

Abbreviated designation : e.g. Composite material DBL 5471.90

1. APPLICATIONS

This Specification is intended to facilitate the accelerated aging of assembly components by means of different storage parameters. It specifically applies to the assessment of surface materials of trim and molded padding used in vehicle interiors incl. the luggage compartment. Non-laminated plastic compo-nents shall be aged in accordance with DBL 5471 and assessed visually. In addition, DBL 5404 shall be observed for these components. Painted plastic parts shall be assessed according to DBL 7384.

2. MATERIALS

The technical values of all starting materials shall correspond to the individual material DBLs, require-ments specifications and drawings.

3. PROPERTIES

3.1General requirements

- - In line with the specifications of the Quality Management unit of the receiving plant, the components shall be free of manufacturing defects of any kind which would impair the processing and utilization properties or the appearance (e.g. free from release agents). Cleaning agents used during the manufac-turing process shall not cause any material/surface damage.

Trim:

The bond between the surface material and the substrate shall extend across the whole surface and shall be uniform, sufficiently strong and resistant to aging. The surface material shall be turned over and glued at the outside edges with sufficient strength and without disturbing overlaps. The pull-off force of any glued-on, riveted or integrated attachment or assembly parts (holders, clips or similar) shall corre-spond to the values indicated on the drawing, and the values shall be indicated in the ISIR.

- Molded

padded

parts:

These shall be molded with correct dimensions in accordance with the drawing or the functional specifi-cations and demonstrate the specified hardness (indentation depth). The foam expansion shall be even and without noticeable pockets. The foam shall have completed all reactions after a storage time of the molded padded part of 24 hours at room temperature, i.e. it shall not be tacky nor brittle. The bond be-tween cover material and foam as well as between foam and substrates shall be firm enough to ensure that no separation can occur during assembly or use (e.g. as a result of release agent residues). This requires appropriate conditioning of the surface of the materials. The surfaces of the molded padded parts shall correspond to the specified design pattern.

- The availability of a certificate of testing in accordance with the following method is specified as an over-riding requirement for adherence to the emission values for interior trim materials: VDA 278; threshold values DBL 8585.

The user is responsible for checking whether the version in his possession is the latest version. For

inquires on threshold values, please apply to VDA278.DC-Info@https://www.sodocs.net/doc/513170201.html,.

In particular in the case of substances listed in DBL 8585 Section 2.3, the supplier is required to con-tinuously minimize the concentration and emission at least in accordance with the state of the art, even when values have fallen below the required DBL threshold values.

In installed condition, the materials used shall comply with the following requirements when tested in accordance with the test instruction: "Formteile für den Fahrzeuginnenraum - Bestimmung der Abgabe von Formaldehyd, Ammoniak und Phenolen - Messverfahren in der 1 m3- Kammer“ (draft October 1994, issued by Arbeitskreis "Kfz.-Formteile - einfache Prüfmethoden“ under the leadership of FhG-WKI, Bien-roder Weg 54 E, D-38108 Braunschweig):

- Formaldehyde emission: initial value max. 0,2 ppm, in equilibrium max. 0,05 ppm

- Phenol emission: max. 0,04 ppm

- Ammonia emission: minimal

Page 3

DBL 5471 : May 2007 Measurements shall be carried out on finished parts under the following testing conditions:

- Temperature 65 °C

- Relative humidity 11 %

- Cabinet load 2 m2 per m3

- Change of air 0,5 h-1

The consistency of production with regard to formaldehyde release shall be tested by means of a simple method and documented, e.g. bottle method (determination of formaldehyde release of molded parts by the bottle method, VDA recommendation 275- DKF, Ulrichstr. 14, D-74321 Bietigheim) or gas analysis method DIN-EN 717-2 (was: DIN 52 368 - Beuth Verlag GmbH, D-10772 Berlin). It is a condition, how-ever, that this value is determined already for the initial sample. For this reason, it shall also be indi-

cated on the acceptance test certificate.

3.2 Shape, dimensions, cut-outs and markings

In accordance with drawing and/or template.

3.3 Color

In accordance with order, approval, reference sample and other specifications (DE/QM).

3.4 Grain

In accordance with order MBN 31 030

4.TECHNICAL DATA

Refer to Table 2, pages 6 to 9.

METHODS

5. TEST

DIN/EN/ISO (refer to Table 2) or DBL 5306, Part II and DBL 5307.

5.1 Separating force for laminated parts (cover material/substrate)

The test shall be carried out in analogy with the separation test in accordance with DIN 53 357 immedi-ately after the specified storage periods. Test specimens shall be taken in longitudinal, transverse and diagonal directions and shall provide a representative cross-section of the complete part and shall be

documented in the ISIR.

The test specimens shall be prepared by sawing out pieces approx. 70 mm wide and approx. 200 mm long. For testing the separating force, cut the surface material through to the substrate 50 ± 1 mm wide with a knife in the longer direction of the test specimen.

5.2 Foam adhesion for molded paddings (excerpt from DBL 530

6.16)

Strips 50 mm wide shall be cut into the narrow side of the molded padding, and the surface material

(e.g. deep drawn films, molded skins) shall be pulled off at an angle of approx. 120° and at a rate of

approx. 100 mm/5 s constantly and without sudden movements. The area-based foam adhesion on the reverse of the pulled-off materials and the surface of the substrate shall be assessed. As a representa-tive average, at least 75 % of the total surface of the molded padding shall be pulled off from various

locations and assessed. Adhesion values are specified in the specific material DBL. Each individual

strip shall be assessed; the result shall be calculated by averaging. No individual strip shall lie more

than 50% below the foam adhesion. Where the visual foam adhesion between the molded skin and the foam yields a result lower than 75%, compliance can be proven by indicating the separating force value in N. Attach a spring balance (compression-tension measuring unit 0 to 50 N) to the test strip and de-

termine the separating force under the test conditions indicated above. The test result shall not fall be-low the lower threshold value required in the specific material DBL (10 N/5 cm strip width). The test shall be performed on components which have been stored at 23 ± 5 °C for at least 48 h after foaming or

which have been subjected to heat storage.

Page 4

DBL 5471 : May 2007

5.3 Climatic resistance tests

Assessment

criteria: The parts shall not demonstrate any changes interfering with the application in comparison with the as-supplied state (e.g.

warping, flattening, deflection, shrinkage or extension of the

finished parts, detachment of the surface material and of the

fastening and making-up parts, glue embrittlement, blistering,

impressions and piercing, waviness, brittleness and cracking or

discoloration (assessment in accordance with ISO 105-A02),

tackiness, marked glossiness and grain flattening of the

surface material, marked swelling, spalling, layer and fiber

separation of the substrate or similar). Weld joints shall not

separate.

S = Focus point test (see DBL 5306.104) shall always be performed.

Temperature requirements deviating from the functional specification:

There is a temperature differential between the surface and substrate in the vehicle. For climatic cham-

ber storage, the requirements profile for the surface is higher.

The components are stored unassembled and shall therefore not be used for the assessment of dimen-

sional requirements.

Test sequence:

2. 3. 4. Alternating atmospheres All constant atmospheres

Solar simulation

Low temperature storage

5.4 More precise indication of color fastness to light (hot light fastness) and aging (hot light aging) to artifi-

cial light at high temperatures in accordance with DIN / EN / ISO 105-B06.

Exposure conditions: 3 (normal); irradiance 1,2 W/m2 (420nm)

For type of apparatus C, filter system BS/SL shall be used.

Color fastness (HLF)

- Determination of end point: Exposure to ?E 4,3+/-0,4 of reference 6 (exposed/to covered). Color

measurement of reference with white reference tile as substrate.

- Assessment: Comparison exposed specimen with original specimen for light source

D65.

Assessment with blue scale (references).

Determination of aging (HLA)

- Determination of end point: as for HLF, but with several consecutive cycles.

For each cycle, a new reference 6 shall be used.

- Assessment: Comparison exposed specimen with original specimen for light source

D65.

Assessment with gray scale in accordance with DIN EN 20105-A02

5.5 Abrasion resistance*

1. To be tested in as-supplied condition

2. To be tested following testing according to 5.

3. in sequence 1, 2, 3 (item 3 only for PV 94)

3. To be tested following hot light aging (HLA)

4. To be tested on leather-faced parts following testing according to

5.3 in sequence 1, 2

5. To be tested on leather-faced parts following hot light aging (HLA)

5.6 Sun cream test* Required components: instrument panel, upper and lower sections, center consoles, door linings. Only

for films and

molded skin surfaces. Testing in as-supplied condition, not in aged condition.

*) For Sections 5.5 and 5.6 also refer to DBL 5399

Page 5

DBL 5471 : May 2007

5.7 The contact staining problem shall be assessed in accordance with PAPP PWT 7329.

5.8 The corrosion behavior of metallic components shall be assessed in accordance with test instruction PB

VWT 217.

6.DUTIES OF THE SUPPLIER

Refer to MercedesBenz Special Terms No. 13 and No. 16, Purchase Conditions for Production Materi-als and Spare Parts for Motor Vehicles.

7. SAMPLES

Refer to MercedesBenz Special Terms No. 13.

8. DELIVERIES

Refer to MercedesBenz Special Terms No. 13 and DBL 5306, Section 104.

9. MARKING

Refer to MercedesBenz Special Terms No. 4, No. 24, No. 27 and DBL 5306, Section 105.

10. PACKAGING, FORM OF SUPPLY AND DELIVERY CONDITIONS

Refer to Mercedes-Benz Special Terms No. 30.

Freedom from silicones shall be assured in general.

11. STORABILITY

Refer to DBL 5306, Section 107.

INSTRUCTIONS

12. SPECIAL

Refer to DBL 5306, Section 108.

13. COMPLAINTS

Refer to MercedesBenz Special Terms No. 16 and Purchase Conditions for Production Materials and Spare Parts for Motor Vehicles.

14. ENVIRONMENTAL PROTECTION REGULATIONS/INDUSTRIAL SAFETY

Refer to MercedesBenz Special Terms No. 30, No. 36 and DBL 8585 Negative substance list for the

selection of materials.

Changes:

PV 93 deleted, PV 92, PV 94 and PV 95 revised.

Revision 01.2006

Page 6

DBL 5471 : May 2007

Table 2:

4. Technical data Product version requirements Test method

90 91 92 93 94 95

Conditioning of parts Parts shall only be tested after the reaction of the glue or foam has been completed (refer to data sheets). If

no indications are made: storage 48 h min. at room temperature.

General requirements for all

alternating

atmospheres Time/temperature/relative humidity

Note: All times are holding times. Tolerances: Temperature ± 1 K; relative humidity ± 3 %; rate of change of temperature, heating: approx. 1,5 K/min, cooling: approx. 1,5 K/min; crossover point temperature/relative hu-midity in heating and cooling phases at 40°C max./ 40% r.h. max.

The recorded diagrams shall be documented for leather surfaces.

Climatic resistance storage For requirements text, refer to Section 5.3, page 4 4.1

Alternating

atmospheres

4.1.1 Dry-warm/humid-cold

(warm climate cycle test A)

Film, skin and

textile

surfaces - - - - - S:+ 6 cycl. {2h / 80°C / max. 20%

+ 1h / 23 ± 3°C / 50 ± 15%}

Leather

surface - - - - - S:+30 cycl. {4h / 10°C / 92%

+ 2h / 80°C / max. 20%}

for series production monitoring

10 cycl.

4.1.2 Dry-warm/humid-cold

(warm climate cycle test B)

Film, skin and textile surfaces S:+S:+S:+S:+ fol-

lowed by 2

h 105 °C - -

6 cycl. {2h / 90°C / max. 20%

+ 1h / 23 ± 3°C / 50 ± 15%}

Leather

surface S:+S:+S:+S:+ fol-

lowed by 2

h 105 °C - -

30 cycl. {4h / 10°C / 92%

+ 2h / 90°C / max. 20%}

for series production monitoring

10 cycl.

4.1.3 Dry-hot/humid-cold

(hot climate cycle test)

Film, skin and

textile

surfaces - - - - S:+- 6 cycl. {2h / 120°C / max. 20%

+ 1h / 23 ± 3°C / 50 ± 15%}

Leather

surface - - - - S:+- 30 cycl. {4h / 10°C / 92%

+ 2h / 105°C / max. 20%}

for series production monitoring

10 cycl.

Page 7

DBL 5471 : May 2007 4. Technical data Product version requirements Test method

(continued) 90 91 92 93 94 95

4.2 Constant atmospheres

4.2.1 Dry-warm endurance test A

(warm temperature test)

- - - - - S:+7d / 80 °C / max. 20%

4.2.2 Dry-warm endurance test B

(warm temperature test)

S:+S:+S:+S:+- - 7d / 90 °C / max. 20%

4.2.3 Dry-hot endurance test

(heat test)

Film, skin and

textile

surfaces

- - - - S:+- 7d / 120 °C / max. 10% Leather

surface S:+7d / 105 °C / max. 10%

4.2.4 Humid-warm aging

Film, skin and textile surfaces, not for parts with leather surfaces S:+S:+S:+S:+S:+S:+

21d / 40 °C / 92%

4.3 Change

color

after climate storage 4.1 and 4.2

Minimum Rating 4 - 5 4 - 5 4 - 5 4 - 5 4 - 5 4 - 5

DIN/EN 20105-A02

4.4 Solar simulation DIN 75 220

4.4.1 Indoor 1 - - - - + - Indoor 1 dry climate

4.5 Color change after solar

after solar simulation 4.4

Minimum Rating - - - - 4 -

ISO 105-A02

4.6 Cold resistance DBL 5306.7.3;

storage 24 h at -30 ±2 °C,

4.6.1 Ball drop test + + + + + + Drop height: 200mm

4.7 Hardness test The required indentation depth is specified on the relevant drawing for the

individual parts and shall be documented in the ISIR.

DBL 5306.15.2 ????

Page 8

DBL 5471 : May 2007

4. Technical data Product version requirements Test method

(continued) 90 91 92 93 94 95

4.8 Layer separation force *

Minimum N Refer to Sectio 5.1.

4.8.1 For substrates with rough surface (e.g. hardboard, pressed non-woven fabric etc.)

and for covering materials with very high elongation (min. 45% elongation at 50N; e.g. knitted fabric) *If the separating forces are not reached, a waiver shall be agreed with DC and docu-mented. These shall be recorded in the ISIR.

4.8.1.1 after storage in standard atmosphere 15 15 15 15 15 15

4.8.1.2 after climatic storage S: 12S: 12S: 12S: 12S: 12S: 12For storage, refer to

Section 4.1, 4.2, 4.4 4.8.2 For substrates with smooth surface (e.g. injection-molded ABS, PUR-GF)

4.8.2.1 after storage in standard atmosphere20 20 20 20 20 20

but for film 50 50 50 50 50 50

4.8.2.2 after climatic storage S: 15S: 15S: 15S: 15S: 15S: 15For storage, refer to

but for film S: 50S: 50S: 50S: 50S: 50S: 50Section 4.1, 4.2, 4.4

4.9 Surface adhesion for molded padding Minimum %Section

5.2,

DBL

5306.16; for storage, refer to

4.9.1 Cover material to foam S: 75S: 75S: 75S: 75S: 75S: 75Section 4.1, 4.2, 4.4 4.9.2 Substrate to foam S: 75S: 75S: 75S: 75S: 75S: 75

4.10 Burning

test S: Fulfillment of requirements in accordance with DBL 5307, product ver-

sion 10 / 20.

DBL 5307.5.1 or 5.2

4.11 Abrasion resistance, only for film,

skin or plastic surfaces

Minimum Rating

4.11.1 dry 4 4 4 4 4 4 DBL 5306.4.1 Refer to Section

5.5

4.11.2 wet

4.11.3 *MB stain remover 4.11.4 MB

plastics

cleaner 4.11.5 MB

glass

cleaner 3-4

3-4

* 5 strokes without additional

weight

BQF 7528.00

BQF 6960.20

4.12 Sun cream test

Maximum Rating 1 1 1 1 1 1 PAPP/PWT 7328 Refer to Section 5.6

4.13 Scratch resistance only for film,

skin or plastic surfaces The surface shall demonstrate no or only a small scribing effect when mar-

king with a finger nail.

DBL 5306.3.1

4.14 Scratch exposure of surface with

chisel, only for flexible cellular TPO and PVC sheeting No violation of surface.

DBL 5306.3.2; for total load, refer

to individual material DBL, oth-

erwise 1600g

Page 9

DBL 5471 : May 2007 4. Technical data Product version requirements Test method

(continued) 90 91 92 93 94 95

4.15 Color fastness (HLF)

Minimum blue scale Rating 6 6 6-7 6-7 6-7 6

DIN/EN/ISO 105-B06

4.16 Aging (HLA)

Minimum gray scale Rating - - 4 periods 4 periods 4 periods

3-4 -

For test methods refer to Section

5.4

Requirement:

Possible deviation

Cover product DBL shall determine the requirements for the finished part with regard to the rating and number of periods.

If cover product DBL-PV is better in rating (with a number of periods of at least 4) than in the corresponding PV of DBL 5471, the following criteria shall apply:

u Number of periods as specified in cover product

DBL.

u Rating max. deviation 0,5 downwards.

If no cover product is specified, rating and number of periods of corresponding PV of DBL 5471 shall apply.

4.17Emission analysis

4.17.1 VOC value μg/g (ppm) 4.17.2 FOG value μg/g (ppm)

Target value: ≤ 100

Target value: ≤ 250

DBL 8585

VDA 278*

Critical individual substances shall not exceed the limit/target values

indicated in DBL 8585, Section 2.3.

4.18 Odor test

Maximum Rating 3 3 3 3 3 3 VDA 270; depending on compo-nent size

4.18 Fogging test For the composite, the fogging values specified in the relevant DBL of the

surface materials apply. The relevant approval shall be available already

before the approval of the relevant parts. If no allocation is possible or no

value has been specified, the following shall apply

Fogging test: Quantity of condensable substance: Maximum 1,0 mg

For the substrate materials the values specified in the DBL, if available,

shall apply. If no allocation is possible or no value has been specified, the

following shall apply

Fogging test: Quantity of condensable substance: Maximum 2,0 mg

DIN 75 201 * In the event of deviations, the value specified in the individual material DBLs shall apply.

DBL_5471_2007-05

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