1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 09 27 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.16, 3.17 & 4 1990 02 01 Released C 01031532 K. Gerhards Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 3 PVC/METALLIZED POLYESTER FILM/PVC LAMI
2、NATE WSK-M98D23-A DECORATIVE COEXTRUSION MOLDING 1. SCOPE The material defined by this specification is an extruded PVC molding incorporating a decorative, metallized polyester film which is covered with a clear protective PVC layer. 2. APPLICATION This specification was released originally for part
3、s used as decorative bumper and bodyside moldings. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 APPEARANCE (FLTM BI 109-01) The color, pattern
4、 and finish shall match the approved Design Center master sample or shall be as specified on the Engineering drawing. 3.5 ADHESION OF MATERIAL LAYERS 3.5.1 Metallized Film to PVC Core The metallized polyester film must not separate from the PVC-core by mechanical means without tearing. 3.5.2 Metalli
5、zed Film to Clear PVC Layer No adhesion between polyester film and protective PVC layer required. 3.6 DIMENSIONAL STABILITY, SHRINKAGE, max 0.5% Test Method: Specimens of 500 mm in length shall be stored at free state in a mechanical convection oven maintained at 120 +/- 2 C for 30 min. Dimensional
6、changes shall be measured after reconditioning to room temperature. Note: Annealing of the molding is allowed to meet this requirement. 3.7 PAINT REPAIR OVEN RESISTANCE There shall be no evidence of deformation, creasing, cracking, delamination of the molding from the substrate or other failure when
7、 an assembled section of part is exposed in vehicle assembly position for 30 min at 120 +/- 2 C. ENGINEERING MATERIAL SPECIFICATION WSK-M98D23-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.8 HEAT AGEING The molding shall not show any staining or color
8、tone change after exposure at 80 +/- 1 C for 7 days. 3.9 RESISTANCE TO COLD IMPACT -40 C After test, the specimen shall show no breaks, cracks or other deteriorations. Test Method: The specimen shall be mounted as assembled in the vehicle using a suitable device. After heat ageing period of 24 h at
9、80 +/- 1 C it shall be exposed for 16 h in a cold box maintained at -40 +/- 1 C. After removal of the assembly from the cold box, adjust to place specimen in a horizontal position and impact within 5 s by dropping a steel ball of 225 +/- 5 g and approx. 38 mm in diameter onto the specimen from a hei
10、ght of 300 mm. The impact shall be carried out on areas regarded as most vulnerable in respect of shape and installation on the vehicle. Examination shall be performed after reconditioning to room temperature. 3.10 ENVIRONMENTAL CYCLING (FLTM BQ 104-07, Procedure 1, subject specimen unmounted and re
11、condition prior to examination for 4 h at room temperature) After test, the molding shall not show any distortion, cracks, milkiness or other surface failures. There shall be no evidence of adhesion loss between single material layers. Adhesion test according to 3.5.1. 3.11 SHOCK TEST After test the
12、 speciman shall not show any distortion, cracks or other surface failures. There shall be no evidence of adhesion loss between single material layers. Adhesion testing according to 3.5.1. Test Method: Condition specimens approx. 150 mm in length for 4 h in a cold box maintained at -40 +/- 1 C, and i
13、mmediately after removal immerse for 5 min in water at 70 +/- 2 C. 3.12 SALT SPRAY RESISTANCE (FLTM BI 103-01, 240 h) No blistering, permanent stain, change of color or gloss. 3.13 THERMAL STABILTY, min 30 min (ISO R 182, Method B, test temperature 200 C) 3.14 END SEALING After 5 h immersion in 1 N
14、NaOH end sealed parts shall not show any deterioration or staining of bright aluminium. Note: This test is only applicable for end sealed parts (see Engineering drawing). ENGINEERING MATERIAL SPECIFICATION WSK-M98D23-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Pag
15、e 3 of 3 3.15 WEATHERING RESISTANCE After exposure in accordance with 3.15.1, 3.15.2 and 3.15.3 the material shall show no color change in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 step). A slight loss of gloss or chalking will be allowed provided an accep
16、table appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume). 3.15.1 Xenon Arc Weatherometer Rating 4 (SAE J 1960, 2000 kJ/m2 exposure) 3.15.2 12 months Florida - EAO Rating 4 24 months Florida - NAAO Rating 4 (FLTM BI 160-01, 5 south, direct weathering inland) 3
17、.15.3 12 months Arizona - EAO Rating 4 24 months Arizona - NAAO Rating 4 (FLTM BI 160-01, 5 south, direct weathering inland) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. The material has no resistance against fuels and exhaust emission products.
