1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2015 04 16 N Status No longer used no replacement named L. Sinclair, NA 2005 03 08 Activated C. Leslie Copyright 2015, Ford Global Technologies, LLC Page 1 of 5 LAMINATE, FLEXWAVE PATTERN, KNITTED POLYESTER FABRIC, WSS-M99H149-A POLYURETHANE
2、FOAM, CONVERTIBLE BOOT COVER NOT TO BE USED FOR NEW DESGIN 1. SCOPE The material defined by this specification is polyester, warp knitted piece dyed fabric, flame laminated to flame bondable polyether urethane foam. 2. APPLICATION This specification was released originally for material used as a boo
3、t cover material for convertible top covers. The cover material must always be 100% bonded to the substrate material to form a composite. 3. REQUIREMENTS In addition to the requirements listed herein, any other applications of this material would require prior approval of the Materials Engineering A
4、ctivity. 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). 3.2 APPEARANCE (FLTM BI 109-01) The color, pattern, and finish shall match the approved Design Center master
5、 sample, or shall be as specified on the engineering drawing. 3.3 ROLL GOODS QUALITY The laminate shall be uniformly bonded, and the fabric shall not delaminate from the foam during shipment, handling, or in-plant processing. 3.4 COMPOSITION (ASTM D 629) Fabric 100% Polyester Foam Polyether Polyuret
6、hane ENGINEERING MATERIAL SPECIFICATION WSS-M99H149-A Copyright 2015, Ford Global Technologies, LLC Page 2 of 5 3.5 FABRIC REQUIREMENTS The following requirements shall be conducted on unbonded fabric: 3.5.1 Yarn Description and Construction (ASTM D 1244) Face Dull Round Polyester Or Semi-Dull Round
7、 Textured Polyester Back Semi-dull Round Polyester 3.5.2 Fabric Count (ASTM D 3887) Wales 120 - 133 wales/10 cm Courses 197 - 218 courses/10 cm 3.5.3 Weight, min 128 g/m2 (FLTM BN 106-01) 3.5.4 Knitting Machine Gauge 28 3.5.5 Method of Dyeing Piece dyed 3.5.6 Surface Finish Un-Napped 3.6 FOAM REQUIR
8、EMENTS The foam shall be polyether polyurethane and shall conform to ASTM D 3574 USU E J2. The following tests shall be conducted on surrogate foam samples. 3.6.1 Tension Test, min 80 kPa (ASTM D 3574, Test E) ENGINEERING MATERIAL SPECIFICATION WSS-M99H149-A Copyright 2015, Ford Global Technologies,
9、 LLC Page 3 of 5 3.6.2 Steam Autoclave Aging (ASTM D 3574, Tests E and J2) Retained Tension, min 70% of original (After two autoclave cycles, for 10 h total exposure) Specimen preparation: Cut out 25 mm wide strips from the fabric/foam laminate. By hand, carefully peel or cut the foam away from the
10、fabric, taking care to minimize damage to the foam. Die cut tension specimens from the foam. Allow the specimens to recover from cutting and handling. Measure and record the thickness of the specimens. Expose and test. 3.7 FABRIC - FOAM LAMINATE REQUIREMENTS 3.7.1 Thickness, Range Production Samples
11、 As specified on engineering or pattern drawings Source Approval and 4.0 +/- 1.0 mm Master Samples 3.7.2 Ply Adhesion, both directions, min 6 N* (FLTM BN 151-05) *The fabric shall not separate cleanly from the foam surface (fabric specimen shall exhibit foam particles adhered to the peeled surface).
12、 In those cases where a sustained peel cannot be obtained due to the foam tearing or breaking away completely from the fabric, ply adhesion shall be considered acceptable if the peak load prior to break exceeds the above minimum requirement. If the laminate is less than 4.0 mm thick and a numerical
13、ply adhesion value cannot be satisfactorily obtained, ply adhesion shall be acceptable if the fabric cannot be separated cleanly from the foam. 3.7.3 Resistance to Abrasion, min 150 cycles (SAE J948, 500 g load, CS-10 wheel) No evidence of excessive surface deterioration. The resistance to abrasion
14、of production material shall be equal to or better than that exhibited by the Fabric Proposal approved by the Materials Engineering Activity. 3.7.4 Resistance to Fade (SAE J1885, ISO 105-A02/ AATCC Evaluation Procedure 1) 225.6 kJ/m2 Rating 4 488.8 kJ/m2 Rating 3 ENGINEERING MATERIAL SPECIFICATION W
15、SS-M99H149-A Copyright 2015, Ford Global Technologies, LLC Page 4 of 5 3.7.5 Resistance to Heat Aging, min Rating 4 (7 days at 100 +/- 2 C, ISO 105-A02/ AATCC Evaluation Procedure 1) No individual yarn or combination of yarns shall exhibit fiber deterioration or color tone change in excess of the ab
16、ove rating. Backcoatings, if applied, shall exhibit only slight color change and no deterioration. 3.7.6 Resistance to Crocking (FLTM BN 107-01, AATCC Evaluation Procedure 3) Dry Rating 4 Wet Rating 4 3.7.7 Soiling and Cleanability, min Rating 3 (FLTM BN 112-08) 3.7.8 Strength Properties Materials m
17、ust meet the original breaking strength and aged breaking strength as specified below. 3.7.8.1 Breaking Strength, min 35 N (ASTM D 5034, Grab Method, 305 mm/minute jaw speed, average of 5 samples, each direction) 3.7.8.2 Ultraviolet Deterioration (SAE J1885) Retained Tensile, min (FLTM BN 117-03, Me
18、thod A) 225.6 kJ/m2 30% retained strength 3.7.8.3 Seam Strength, N, min (FLTM BN 119-01 except use lockstitch with 6 stitches/25 mm, average of 5 samples, each direction) Bilaminated Fabrics 310 N 3.7.8.4 Tear Strength (Trapezoid), N, min (ASTM D 1117, Integration Method, average of 5 samples, each
19、direction) Knit Bilaminated Fabrics 100 N ENGINEERING MATERIAL SPECIFICATION WSS-M99H149-A Copyright 2015, Ford Global Technologies, LLC Page 5 of 5 3.8 ODOR, max Rating 2 (FLTM BO 131-01) 3.9 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Numb
20、er, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.10 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute Note: Not required on the face fabric when used as a fully bonded composite 3.11 TRIMMABILITY PROPERTIES 3.11.1 Stretch and Set (SAE J1885) Stretch, %,
21、range As approved mutually between Tier 1 supplier and fabric Lamination supplier and reported per Control plan 3.11.2 Shrinkage, each direction, max Water Shrinkage 6% (FLTM BN 105-01) Heat Shrinkage 6% Test Method: Prepare test samples as specified in FLTM 105-01. Place sample in an 85 +/- 2 C oven for 90 seconds. Remove and measure shrinkage immediately.
