dbl5575

dbl5575
dbl5575

May 2005

Mercedes-Benz

Supply Specification

Textile-flocked elastomer parts for body sealings and

plastic parts for vehicle interior

DBL 5575

BQF available

?

Additional DaimlerChrysler standards required: DBL 5555, DBL 8585, MB Special Terms

Supersedes edition: 08.1996 Refer to Section Changes

Continued on pages 2 to 8

Issued by: DaimlerChrysler AG 70546 Stuttgart Standards (EP/QIN) Technical responsibility (name): Elke Stoecker

Department: PWT/VWK Plant: 050

Telephone: +49(0)7031/90-81572 HPC: F105 Technical coordination by Central Materials and Process Engineering Plant: 50 Department : PWT/VWK Name: Dr. Wittig Telephone: +49(0)7031/90-44270

Confidential! All rights reserved. Distribution or duplication in part or in whole without prior written approval of DaimlerChrysler AG is not permitted.

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

1. General requirements and elastomer basis

Product version PV Application examples

Recommended polymer type

Recommended flock materials 10 Decorative applications

molded parts, static sealings 20 Mechanically-dynamically stressed sealings, e.g.

window guide rails, window weather strips 21 As PV 20, but with increased requirements with

regard to water-repellant finish

For convertible top seals, external weather strips

EPDM TPE

DBL 5571 DBL 5573 DBL 5562

22

Applications in vehicle interior, e.g. for stowage compartment, armrest, rear tray,

glove compartment and spectacles compartment.

ABS, PC/ABS DBL 5404

Spinning nozzle dyed textile fibers

black or

colored flock

Polyamide Polyester

Abbreviated designations:

For drawings in the block for material e.g. Elastomer 70 ± 5 Shore A DBL 5571.10 in the block for design e.g. DBL 5575.20 and delivery

2.

General properties of the materials, raw materials and supply condition

The general conditions laid down in DBL 5555 shall be observed.

The finished parts shall have no or only a small residual flock content in their as-supplied condition. For PV 22 only: The availability of a certificate of testing in accordance with the following method is specified as an

overriding requirement for adherence to the emission values for interior trim materials: VDA 278; limit values DBL 8585.

3.

Dimensions and tolerances/Form of supply: Refer to drawing

4. Technical data : Refer to Table on pages 5 and 6

5.

Changes as against edition 08/95:

Test specifications adapted to VDA standards. Editorial revision Sketches of the test apparatus and chisel are available from department PWT/VWK.

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DBL 5575 : May 2005

methods

6. Test

6.1 Determination of flock adhesion

This test is used for initial sample release (refer to Annex page 7).

Prepare (punch) specimens from the whole flocked width with a

length of 130 mm, avoiding elongation of the parts.

Place the specimens in the fixture with the flock facing upwards, and then push the jaws

of the fixture towards the specimens until they are closed.

Fill the mold with liquefied sealing wax (sealing wax Pelikan red 36 A 196 from

the company Günther Wagner is recommended). The sealing wax should be approx. 5 – 8 mm high.

Depending on the elastomer substrate/flock adhesive used, the liquefaction/casting temperature

should be 130 °C - 150 °C.

Determine the flock adhesion following 2h or in arbitration cases following 24h of storage

of the specimens prepared in this way at room temperature.

Attach the cylindrical part of the apparatus in the upper holder of a tensile tester. Place the specimen on the rollers so that the sealing wax faces upwards.

The free tensioning end is directed downwards through the two rollers.

Detach the flocked elastomer part so far from the sealing wax that it can rest on the second roller. Then clamp the free tensioning end

in the bottom holder of the machine.

Carry out the test with a feed rate of 100 mm/min. At least three individual tests. Evaluation in

accordance with DIN ISO 53 539, method B.

Flock adhesion is determined in relation to the specimen width covered by the sealing wax.

6.2 Freeze-on test for impregnated flocked sealing profiles made of elastomers

Allow the profiles to rest for at least 72 h from the time the impregnation is applied until the

specimens are taken out. Split the back of the flocked sealing lips of the profiles on a splitting machine completely flat so that an even resting surface is ensured.

Spread at least two flocked sealing lips of identical width (b = 10 mm) evenly over the width with their

backs on

a stainless steel plate (145 mm x 200 mm x 2 mm), starting 20 mm

from the edge, using double-sided adhesive tape.

Dimension the length of the sealing lips so that a total flocked surface area of 25 cm2 is

created. Load the stainless steel plate by placing a weight on the rear.

Total weight (stainless steel plate + specimens + weight) = 1 kg.

Store the specimens prepared in this way for at least 8 h before the test in standard atmosphere

in accordance with DIN 50 014-23/50-2.

Dip the specimens attached to the stainless steel plate into deionized water for 10 sec.

Then allow the water to drip off the specimens for 10 sec by turning them over. After turning, place a

glass pane (tempered safety glass 155 mm x 210 mm x 4 mm) on the flocked surface and load

using a weight. Total weight (glass pane + weight) = 1 kg.

Store this assembly in the freezer so that an object temperature of –5 °C to –6 °C is maintained at the glass pane

for at least two hours. Then lift the glass pane in the center –

while still in the freezer. Assess whether or not the specimens detach themselves from the glass pane under the influence of the weight of the stainless steel plate loaded with the weight.

Repeat the test on fresh specimens taken from the same batch in accordance with the description above after storing them as follows:

70 h at +100 °

24 h at +40 °C and (95 ± 5) % r.h.

Page 3

DBL 5575 : May 2005 values

6.3 Resistance

To test the resistance values, prepare the specimens as under Section 6.1 from the finished part and

place in the relevant test substances (water/test liquids). The storage time is 10 min at room

temperature, unless otherwise indicated in Section 4 "Technical data". Take the specimens out of the

test liquid

and store for 2 hours (in case of arbitration for 24 hours)

at 110 °C; allow to cool to room temperature. Then apply the sealing wax.

The volume ratio between the test specimen and the test liquid should be between 1 : 100 and 1 : 50.

Abrasion test: stroke length 100mm. 60 load cycles per minute (double stroke).

6.3.1 Test liquids

Cleaning agent, consisting of

58 - 60 % by weight deionized water

30 - 33 % by weight alcohol

5 - 5,5 % by weight ester

3 % by weight glycol

+ surfactants and aromatic substances

Procurement source: B 187 900 1607 Caramba, Duisburg

6.4 Cleanability

DBL 5306. Section 9.4

resistance

6.5 Abrasion

6.5.1 For PVs 10, 20, 21

Only for specimens where flock adhesion in accordance with Section 4.5 is not possible or if quick

assessment is required in case of complaints.

Testing is only possible with flat surfaces (prepare specimens using a splitting machine, if required).

Execution:

Place the test specimen (120 x 10 mm) on the stationary part of the crockmeter and attach (e.g. with

double-sided adhesive tape). Then move the chisel to and fro.

Total weight: chisel + weight = 250g

LC = load cycles according to Table 4.6.

Test rate: 65 5 LC/min

Stroke: 100 mm.

Test apparatus: refer to 6.5.2

values:

Resistance

In cleaning agent as per Section 6.3.1. Store the prepared specimens in the respective test substances.

The storage time is 10 min at RT.

Then dab well between filter paper. Then carry out the crockmeter strokes

in accordance with Table 4.6.

Assessment:

The layer underneath the flock shall not be apparent after the load cycles indicated. The test area must still display a slight, even flock.

Page 4

DBL 5575 : May 2005

6.5.2For PV 22

Testing in analogy with DBL 5306, Section 4.1

Storage time: 1 hour in water / gasoline (mineral spirit with boiling range 100 - 140°C,

6510.20)

BQF

20 load cycles (crockmeter strokes)

Chisel: Chisel weight + load weight + rod weight = 1000 g

Test rate: 50+-5 LC/min

mm

100

Stroke:

source*

Procurement

Test apparatus

?TI crockmeter with arm ** or

Abrasion tester type APG 1000*

Assessment:

Grade 1 Complete abrasion, no more fibers visible on backing material

Grade 2 Marked change, substrate visible

Grade 3 Significant change, strong fiber abrasion

Grade 4 Small change, slight fiber abrasion

Grade 5 No change, no abrasion impressions, no abraded fibers

Procurement sources:

* Maag Flockmaschinen GmbH

Postfach 29

D-72806 Gomaringen

?sterreichisches

Textil-Forschungsinstitut

**

Spengergasse 20

A-1050 Wien

exposure

7. Flexing

Flex specimen sections up to the coating of the inner surface (flock facing towards the outside).

Section 4.8

8. Tests

8.1 Approval

tests

An approval test includes all the tests described in Section 4.

In case of any changes to makes which have already been approved new approval tests shall be carried out in principle. Test results shall be indicated in a test certificate in accordance with DBL 5555,

2.

Section

tests

8.2 Acceptance

Acceptance tests include all tests carried out to continuously monitor the quality of supplies. They

consist of the tests described under Sections

4.1, 4.2, 4.3, 4.4 , 4.

5.1.

8.3 Emission analysis only for PV 22

1,3-butadiene content:

for thermoplastics containing acrylonitrile, butadiene or styrene for interior passenger compartment

applications.

Content analysis ≤1 ppm. Provided that the finished component supplier is able to ensure that no

additional 1,3-butadiene is created during processing, the presentation of analysis data for the raw

material is sufficient. The emission results shall be submitted to DaimlerChrysler together with the

original CD.

Section: 4.14.

data: refer to Tables on pages 5 and 6.

9. Technical

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DBL 5575 : May 2005

10. Drawing: refer to Annex on page 7.

11. Other applicable standards

Other

standards

Standards

MB

DBL 5555 DBL 5571 VDA 675 310 DIN 75200

DBL 8585 DBL 5573 VDA 675 311 DIN 53539 method B

DBL 7906 DBL 5562 VDA 675 312 DIN 50014-23/50-2

DBL 5307 DBL 5404 VDA 270 method B 2 DIN 75202

DBL 6510 DBL 5767 VDA 278 DIN 50017KK

DBL 5306 VDA 75202 DIN 53509 Part 1 Mercedes Benz Special Terms 2005 ISO 105A02

Page 6

DBL 5575 : May 2005

Product version requirements Test method 4. Technical data 10 20 21 22

4.1 Flock material * Polyester or polyamide * in case of strong exposure to sunlight

4.2 Flock length mm according to drawing 4.3 Flock count dtex according to drawing 4.4 Flock adhesive Indication with initial sample

4.5 4.

5.1 Flock adhesion

Peeling resistance

on delivery N/mm 1,6 2,0 2,0 - Section 6.1

4.5.2 after aging 7d/70°C

at least N/mm 1,5 1,8 1,8 - VDA 675 310 Section 6.1

4.5.3 after ozone test

at least N/mm 1,3 1,8 1,8 - DIN 53509 Part 1 72h, 20% elongation Test temperature: (40 +/- 2) °C Section 6.1

4.5.4 after storage in constant

condensed water

climate

21d / 40°C

at least N/mm 1,2 1,4 1,4 - Section 6.1 and

DIN 50 017 KK

4.5.5 after storage in

cleaning agent

at least N/mm 1,0 1,3 1,3 - Section 6.1 Section 6.3

4.6 Abrasion resistance

at least PVs 10, 20, 21 Section 6.5

LC = load cycle

4.6.1 dry 100 LC 200 LC 200 LC Grade 4 - 5 For molded parts as

agreed between

supplier and DC

PV 22 Section 6.5.2 4.6.2 wet 20 LC 50 LC 50 LC Rating 4

Section 6.3

PV 22 Section 6.5.2

4.6.3 with cleaning agent

refer to test instructions 10 LC 25 LC 25 LC Grade 3 - 4

Section 6.3

PV 22 Section 6.5.2

4.7 Cleanability - - - no

destruction

of flock

DBL 5306,

Section 9.4

Page 7

DBL 5575 : May 2005

Product version requirements Test method

4. Technical data

(continued)

10 20 21 22

4.8 Flex test Cracks may form.

No cracking of colored flock.

Chipping or peeling off from substrate

over surface not permissible.

- Section 7

4.9 4.9 Hot

light

aging

at least Grade 4 x

3*

*only in case of direct exposure of finished part to

sunlight

Color fastness to

light at high

temperature: VDA

75202

Ass. gray scale.

ISO 105A02

4.10 Color fastness to

light at high temperature at least g rade

7*

*only in case of direct exposure of finished part to

sunlight

VDA 675 312

VDA 75 202

4.11 Odor test

maximum

grade 3*

*only for parts in interior passenger compartment

VDA 270 depending

on component size

4.12 Burning test DBL 5307, product version 10, Section

5.1*

*only for parts in interior passenger compartment

DIN 75 200

4.13 Freeze-on test

_ _ Specimen

becomes

detached

from glass

pane when

pane is lifted.

_

Section 6.2

4.14 4.14.1 4.14.2 4.14.3 Emission analysis

VOC value

FOG value

1,3-butadiene

content

Only for PV 22

Critical individual substances shall not exceed the

limit/target values indicated in DBL 8585, Section 2.3.

Materials containing

ABS

Target value: ≤ 100 μg/g(ppm) ≤ 50ppm

Target value: ≤ 250 μg/g(ppm) ≤ 200ppm

≤ 1ppm

DBL 8585

VDA 278

4.15 Fogging max.

mg - 0,7 DBL 5306 method B,

Page 8

DBL 5575 : May 2005

Test apparatus: Flock adhesion

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