1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 00 2014 08 29 Released R. Harris, NA Controlled document at www.MATS Copyright 2014, Ford Global Technologies, LLC Page 1 of 6 FLOCK SPRAYED FINISHED PARTS, INTERIOR WSS-M98P8-C1 1. SCOPE This specification defines the requirements for i
2、nterior plastic parts with sprayed flocking. The flock is retained by means of an adhesive. 2. APPLICATION This specification was released originally to define the performance requirements for flocked interior parts such as glove box inners. 2.1 LIMITATIONS Not for visible areas of the vehicle that
3、are subjected to UV exposure. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements for Production Materials (WSS-M99P1111-A). 3.1.1 All parts of the component that are visible after vehicle assembl
4、y, including terminating edges shall conform to the full requirements of this specification. 3.1.2 Materials used in interior applications must meet the requirements outlined in WSS- M99P2222-D1/Latest, Performance, Vehicle Interior Environment Quality Material/Component Requirements, Clauses 1 - 5.
5、 Data must be included in material submission package. 3.2 SYSTEM COMPONENTS Adhesives, primers or other surface treatments utilized to achieve adequate adhesion of the flock fiber to the substrate shall not adversely affect the physical properties of the substrate material. 3.2.1 Test Specimens Tes
6、ting must be conducted at DV and PV unless specified otherwise by Ford Engineering (See Table 1 for sample sizes and required testing). Testing must be done on actual or surrogate parts unless part geometry precludes the option, in which case plaques of the same materials and processing may be used.
7、 Surrogate part or plaque usage must be clearly reported on the PSW or the laboratory test report. 3.2.2 Substrate As specified on the Engineering Document. ENGINEERING MATERIAL SPECIFICATION WSS-M98P8-C1 Copyright 2014, Ford Global Technologies, LLC Page 2 of 6 3.2.3 Plastic Preparation The surface
8、 to be flocked may need to be cleaned by an acceptable process, to remove mold releasing agents, fingerprints, oils, dirt and moisture. This process must be noted in the initial submission package and identified on the drawing. 3.2.4 Primer When necessary in order to meet the requirements of this sp
9、ecification, an adhesion promoter may be needed. Multiple coats may also be applied to meet the requirements of this specification. Surface enhancements, such as flaming or plasma treatment that modify surface tension / surface resistivity may also be required in order to meet the requirements. This
10、 must be noted in the initial submission package and identified on the drawing. 3.2.5 Adhesive Shall be a suitable non-staining type adhesive. This must be noted in the initial submission package and identified on the drawing. 3.2.6 Flock Fiber material and geometry shall be noted in the initial sub
11、mission package and identified on the drawing. 3.3 APPEARANCE (FLTM BI 109-01) The color and finish shall be as specified on the engineering drawing. 3.4 INITIAL ADHESION Any indication of chipping or brittleness of the flocked adhesive film shall be cause for rejection. 3.4.1 Adhesion to Substrate
12、Shall not pull free more than 2 mm before breaking Test Method: FLTM BI 106-01, Method “C“ except lift the flock/adhesive layer away from the substrate at one end of each strip so that it can be easily grabbed. Then peel the flock/adhesive strip away from the substrate by hand. 3.4.2 Flock to Adhesi
13、ve 24 mg max (FLTM BN 108-08) All flocked parts shall be thoroughly cleaned to limit the amount of loose flock on the finished part. 3.5 RESISTANCE TO ABRASION There shall be no wear (SAE J948, 500 g load, CS-10 wheel, through to the substrate 250 cycles or as specified on the Engineering Document)
14、ENGINEERING MATERIAL SPECIFICATION WSS-M98P8-C1 Copyright 2014, Ford Global Technologies, LLC Page 3 of 6 3.6 ENVIRONMENTAL TESTING Test Procedure Visually evaluate the part before, during, and after the test. Automated programmable test cycles based on the listed test conditions may be accepted by
15、prior agreement with the affected Materials Engineering Activity. Ramp speed 1 to 5 C per minute. Record actual ramp speed on data sheet Requirements: The flocked assemblies shall remain relatively unaffected by the exposure, during and after the tests as demonstrated: (1) Tactually/visually - no ex
16、cessive tackiness, change in surface texture or color change (AATCC Procedure 1, Rating 4, min); no wrinkling, distortion, blistering, warping, delamination, blushing, hazing, staining or other objectionable visual appearance. (2) Functionally - no excessive expansion, shrinking, or warping that wil
17、l interfere with normal functional operations. 3.6.1 Long Term Heat Exposure Rating 4 min (90 +/- 2 C for 7 days, condition to 23 +/- 2 C, for one hour ISO 150-A02/AATCC Procedure 1) Mount the finished part according to vehicle installation on a suitable fixture and place it in-car position in a mec
18、hanical convection oven. 3.6.1.1 Adhesion to Substrate after Shall not pull free more than Long Term Exposure 2 mm before breaking Test Method: (FLTM BI 106-01, Method “C“ except lift the flock/adhesive layer away from the substrate at one end of each strip so that it can be easily grabbed. Then pee
19、l the flock/adhesive strip away from the substrate by hand. 3.6.1.2 Flock to Adhesive after 24 mg max Long Term Exposure (FLTM BN 108-08) 3.6.1.3 Resistance to Abrasion after There shall be no wear Long Term Exposure through to the substrate (SAE J948 Procedure B, 500 g load CS-10 wheel, 250 cycles)
20、 ENGINEERING MATERIAL SPECIFICATION WSS-M98P8-C1 Copyright 2014, Ford Global Technologies, LLC Page 4 of 6 3.6.2 Short Term Heat, Humidity and Cold Cycle Rating 4 min (ISO 150-A02/AATCC Procedure 1) . 5 h at -40 +/- 2 C . 30 min at 23 +/- 2 C and 50 +/- 5% Relative humidity . 5 h at 90 +/- 2 C . 30
21、min at 23 +/- 2 C and 50 +/- 5% Relative humidity . 2 h at 50 +/- 2 C and 95 +/- 5% Relative humidity . 30 min at 23 +/- 2 C and 50 +/- 5% Relative humidity . 5 h at -40 +/- 2 C . 30 min at 23 +/- 2 C and 50 +/- 5% Relative humidity . 5 h at 90 +/- 2 C . 1h at 23 +/- 2 C 3.6.2.1 Adhesion to Substrat
22、e after Shall not pull free more than Short Term Exposure 2 mm before breaking Test Method: (FLTM BI 106-01, Method “C“ except lift the flock/adhesive layer away from the substrate at one end of each strip so that it can be easily grabbed. Then peel the flock/adhesive strip away from the substrate b
23、y hand. 3.6.2.2 Flock to Adhesive after 24 mg max Short Term Exposure (FLTM BN 108-08) 3.6.2.3 Resistance to Abrasion after There shall be no wear Short Term Exposure through to the substrate (SAE J948 Procedure B, 500 g load CS-10 wheel, 250 cycles) 3.7 RESISTANCE TO SCUFFING There shall be no clea
24、rly (SAE J365, 10 cycles or as specified defined areas of flock lifting on Engineering Document) from the adhesive. Flattening of fibers is acceptable. 3.8 RESISTANCE TO CROCKING (FLTM BN 107-01) Wet Rating 4 min Dry Rating 4 min 3.9 FOGGING, PHOTOMETRIC (SAE J1756, 3 h at 100 C heating, 21 C coolin
25、g plate, post test conditioning 16 h) Fog Number 70 min Formation of clear film, droplets or crystals is cause for rejection. ENGINEERING MATERIAL SPECIFICATION WSS-M98P8-C1 Copyright 2014, Ford Global Technologies, LLC Page 5 of 6 3.10 ODOR Rating 3 max (FLTM BO 131-03) 3.11 FLAMMABILITY (ISO 3795/
26、SAE J369) Burn Rate 100 mm/minute max 4. GENERAL INFORMATION This information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 5. SUMMARY OF REVISIONS ENGINEERING MATERIA
27、L SPECIFICATION WSS-M98P8-C1 Copyright 2014, Ford Global Technologies, LLC Page 6 of 6 MINIMUM SAMPLE REQUIREMENTS TABLE 1 TESTS Number of Parts/Test Specimens DV PV 3.4.1 Adhesion to Substrate 3 parts, 1 test specimens per part X May be removed with sign-off by Materials and PD Engineering 3.4.2 Fl
28、ock to Adhesive 3 parts, 1 test specimens per part X May be removed with sign-off by Materials and PD Engineering 3.5 Resistance to Abrasion 3 parts, 1 test specimen per part X 3.6.1 Long Term Heat Exposure- Appearance 6 parts, 3 for Adhesion Tests, 3 for Abrasion Resistance X 3.6.1.1 Adhesion to Su
29、bstrate after Long Term Heat and 3.6.1.2 Flock to Adhesive after Long Term Heat Exposure 3 specimens from Long Term Heat for both Adhesion Tests X X 3.6.1.3 Resistance to Abrasion after Long Term Heat Exposure 3 other specimens from Long Term Heat X 3.6.2 Short Term Heat, Humidity & Cold Cycling - A
30、ppearance 6 parts, 3 for Adhesion Tests, 3 for Abrasion Resistance X 3.6.2.1 Adhesion to Substrate after Short Term Heat and 3.6.2.2 Flock to Adhesive after Short Term Heat / Cycling 3 specimens from Short Term Heat for both Adhesion tests X X 3.6.2.3 Resistance to Abrasion after Short Term Heat / C
31、ycling 3 other specimens from Short Term Heat X 3.7 Scuff Resistance 3 parts, 1 test specimen per part X 3.8 Crocking Resistance 3 parts, 1 test specimen per part X 3.9 Fogging, Photometric 3 parts, 1 test specimen per part X 3.10 Fogging, Gravimetric 3 parts, 1 test specimen per part X 3.11 Odor 3 parts, 1 test specimen per part X 3.12 Flammability 5 parts, 1 test specimen per part X All testing must be done at PV, Abrasion and Scuff may be done using plaques
