1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2013 09 25 N Status Replace A1/2/3/4 with WSS-M8P18-B1/2/3/4 D. Murtonen, NA 2010 11 29 Revised See Summary of Revisions M. Dumitrescu, NA 1996 12 09 Activated P. Thomas, B. Chen, D. W. Whyte, N. J. Komatsu Controlled document at www.M
2、ATS Copyright 2013, Ford Global Technologies, LLC Page 1 of 18 PERFORMANCE, FABRIC, SEAT AND TRIM, UNLAMINATED WSS-M8P18-A1 PERFORMANCE, FABRIC FOAM TRILAMINATE WSS-M8P18-A2 PERFORMANCE, FABRIC FOAM BILAMINATE WSS-M8P18-A3 PERFORMANCE, FABRIC LAMINATE, HF WELDABLE WSS-M8P18-A4 NOT TO BE USED FOR NEW
3、 DESIGN 1. SCOPE These specifications define the performance requirements for interior seating and trim fabrics, unlaminated (A1), as a trilaminate with a foam and backing scrim (A2), as a fabric/foam bilaminate (A3), or with HF weldable coatings (A4). 2. APPLICATION These specifications were releas
4、ed for materials used as interior trim fabrics for covering automotive seat cushions, seat backs, and trim panels. WSS-M8P18-A1 Unlaminated, typically used for interior trim application WSS-M8P18-A2 Laminated to foam and backing material, such as a knit or woven fabric, for seating application. WSS-
5、M8P18-A3 Laminated to foam with PE film for seating application or trim application. WSS-M8P18-A4 HF-weldable backing (as required to meet requirements of WSS-M15P4-F(latest), SDS, etc.) Definitions: - Commercial vehicles/heavy wear, i.e. trucks, taxi, cargo vans, police vehicles - Passenger vehicle
6、s, i.e. cars, SUV, CUV 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. In addition to the requirements listed herein, the face fabric shall meet all requirements of the applicable material specification. Unless otherwise specified, all initi
7、al evaluation shall be conducted on a tri-laminate using 3 mm nominal foam thickness as agreed with the responsible Materials Engineering Activity. The foam and lamination process must be production representative. For other thicknesses and additional fabric back-coatings the laminates must demonstr
8、ate compliance to this specification for all material lamination combinations utilized. Seat trim cover assemblies or interior trim panels employing these materials must also meet the engineering requirements of the related Ford Motor Performance specification (e.g., WSS-M15P4-F(latest), SDS, seat a
9、ssembly, head-rest, etc.), along with any other requirements shown on the Engineering Drawing. For duplicate requirements, the material specification shall take precedence over the performance specification. Testing must be conducted at each prototype and production build phase unless otherwise spec
10、ified by Ford Engineering. See Table 2 for sample size. ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-A1/A2/A3/A4 Copyright 2013, Ford Global Technologies, LLC Page 2 of 18 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard R
11、equirements For Production Materials (WSS-M99P1111-A). 3.4 CONSTRUCTION Face fabric shall be specified in the individual material specification. Backing materials as required to meet application and process requirements. Flame retardants used in backing materials must be approved by Ford Toxicology.
12、 Note: Effective 2009 MY programs, the fabric construction package submission must include Resistance to staining requirement per paragraph 3.9.7. This test must be run on a light tan or gray color (can be surrogate) 3.5 APPEARANCE (FLTM BI 109-01) The color, pattern, and finish shall match the appr
13、oved Corporate Design master sample, or shall be as specified on the engineering drawing. 3.5.1 Instrumental Color Readings * (SAE J1767) *Instrumental color readings may be required at the discretion of Materials Engineering. Visual evaluation will take precedence over instrumental readings in case
14、s of dispute. Acceptable instrumental tolerance from Corporate Design master sample shall be established between fabric supplier and full service supplier and documented in control plan. 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Number, 70 min
15、 Formation of clear film, droplets or crystals is cause for rejection. 3.7 ODOR, Rating, Rating 3 max (FLTM BO 131-03) 3.8 STRENGTH PROPERTIES Fabric (unlaminated and laminated) must meet the minimum strength properties specified below. ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-A1/A2/A3/A4 Copyri
16、ght 2013, Ford Global Technologies, LLC Page 3 of 18 3.8.1 Breaking Strength, (ASTM D 5034, Grab Method, 305 mm/minute jaw speed, average of 3 samples, each direction) Unlaminated Face Fabrics 310 N min (A1), Bilaminate (A3) and HF weldable (A4) Trilaminated Fabrics (A2) and Bilaminated (A3) 400 N m
17、in Required for seating applications. Note: Recommended limits outside the spec could be accepted based on application or manufacturing operations 3.8.2 Ultraviolet Deterioration 3.8.2.1 Retained Tensile (FLTM BN 117-03, Method A, average of 3 samples, each direction) After Xenon exposure per 3.9.1.
18、1 Seating Non-wear surfaces surfaces (including door) 40%* of original value min 40% of original value min *In addition to the percent retained strength, no sample shall fall below 220 N for the face fabric. 3.8.2.2 Surface Fiber Deterioration (FLTM BN 117-03, Method B, after Xenon exposure per 3.9.
19、1.2) No excessive deterioration of fibers or yarns after xenon arc exposure. The resistance to deterioration of approved production material shall be equal to or better than that exhibited by the Fabric Proposal and Master Sample approved by Materials Engineering. 3.8.2.3 Taber Abrasion (SAE J948, 1
20、000g load/each arm, CS 10 wheels, after Xenon exposure per 3.9.1.2) Woven fabrics 500 cycles min All others 1000 cycles min The resistance to deterioration of approved production material shall be equal to or better than that exhibited by the Fabric Proposal and Master Sample approved by Materials E
21、ngineering. ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-A1/A2/A3/A4 Copyright 2013, Ford Global Technologies, LLC Page 4 of 18 3.8.3 Seam Strength (FLTM BN 119-01 except use lockstitch) with 6 stitches/25 mm, average of 3 samples, each direction) Unlaminated Face Fabrics 310 N min (A1), Bilaminate
22、(A3) and HF Weldable (A4) Trilaminated Fabrics (A2)and Bilaminated (A3) 400 N min Required for seating applications. Note: Recommended limits outside the spec could be accepted based on application or manufacturing operation 3.8.4 Seam Fatigue Resistance (FLTM BN 106-02, 3 samples on each direction)
23、 Needle hole elongation after test 3 mm, max with no “running“ permitted Required for cut and sew seating applications. 3.8.5 Tear Strength (Trapezoid) (ASTM D 1117, Integration Method, average of 3 samples, each direction) Unlaminated Face Fabrics 50 N min (A1), Bilaminate (A3) and HF Weldable (A4)
24、 Trilaminated Fabrics (A2) and Bilaminated (A3) Required for seating applications. 100 N min Trim application 50 N min Note: Recommended limits outside the spec could be accepted based on application or manufacturing operation 3.9 COLOR PROPERTIES *Tests for color properties may be performed on unla
25、minated fabric with prior approval of the appropriate Ford materials engineer. 3.9.1 Resistance to Fade (FLTM BO 116-01, ISO 105-A02/ AATCC Evaluation Procedure 1) 3.9.1.1 451.2 kJ/m2 Rating 4 min 3.9.1.2 977.6 kJ/m2 Rating 3 min ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-A1/A2/A3/A4 Copyright 201
26、3, Ford Global Technologies, LLC Page 5 of 18 3.9.2 Resistance to Heat Aging Rating 4 min (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 above rating. Backcoatings,
27、if applied, shall exhibit only slight color change and no deterioration. 3.9.3 Resistance to Bleeding, Perspiration Rating 4 min and Spotting (FLTM AN 101-01 and AATCC Evaluation Procedure 2) In addition, the spotting sample shall not exhibit objectionable rings or stain on its surface when spotted
28、with water. The resistance to spotting of production material shall be equal to or better than that exhibited by the Master Sample approved for production by Materials Engineering. 3.9.4 Resistance to Rubbing (Crocking) (FLTM BN 107-01, AATCC Evaluation Procedure 2; use instrumental method, FLTM BN
29、107-02, when color transfer is visually apparent) Rating Dry 4 min (4.3 E max) Distilled Water 4 min (4.3 E max) If an instrument with diffuse geometry is used, the specular component of reflectance shall be included in the measurement. NOTE: If a crock result is greater than 4.3 E, repeat the color
30、imeter measurement 4 additional times on the same sample and average all 5 results to minimize measurement error. The average must be less than or equal to 4.3 E. Do NOT conduct another crock test on the roll unless examination of the original crock cloth indicates the test was conducted improperly
31、(e.g., uneven pressure of the crock finger). 3.9.4.1 Frequency of Testing The following minimum guidelines for frequency of testing shall apply unless prior written agreement has been obtained from SQA and Materials Engineering. Once/roll* . All red polyester fabrics . All ISIR submittals . All Mast
32、er Samples and Color Concepts . All fabric/color combinations which have NOT demonstrated process capability below 4.3 E Once/dyelot . Fabric/color combinations with demonstrated process capability below 4.3 E, except red polyesters *Roll refers to whatever size roll is shipped by the fabric manufac
33、turer to a customer (e.g., 45 - 70 m). ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-A1/A2/A3/A4 Copyright 2013, Ford Global Technologies, LLC Page 6 of 18 3.9.5 Soiling and Cleanability (FLTM BN 112-08, ISO 105-A02/AATCC Evaluation Procedure 2) After Cleaning Rating 4 min Standard Soil, Grease, Coff
34、ee 3.9.6 Thermal Migration/Staining Rating 4 min (AATCC Evaluation Procedure 2) Test Method: Cut 2 fabric test specimens 65 x 80 mm. Place 1 test specimen over a 50 x 50 mm AATCC Multifiber Test Fabric No. 10. Center the other test specimen over a 50 x 50 mm AATCC Crockmeter Test cloth with a light,
35、 solid color 65 x 80 mm fabric (construction similar to fabric under test) underneath. Center each test assembly between 65 x 80 mm or larger glass plates and load with a 455 g weight. Place in a 100 +/- 2 C oven for 24 h. After exposure, remove and inspect for any color transfer. The amount of colo
36、r transfer shall not be greater than that exhibited by the Master Sample approved by the Materials Engineering Activity. 3.9.7 Resistance to Staining Rating 4 5 min (FLTM BN 112-12, AATCC Procedure 1 and Instrumental color readings * ) *Instrumental color readings (SAE J1767) may be required at the
37、discretion of Materials engineering. Visual evaluation will take precedence over instrumental readings in cases of dispute. 3.10 WEAR PROPERTIES 3.10.1 Resistance to Abrasion, Taber* (SAE J948, 1000g load/each arm, CS 10 wheels) Woven, Flat Knits and Warp Knits 1000 cycles min DBR and Circular Pile
38、Knits 2000 cycles min Commercial/Heavy Wear Fabrics 2000 cycles min No evidence of excessive surface deterioration. The resistance to abrasion of production material shall be equal to or better than that exhibited by the Fabric Proposal approved by Materials Engineering. * Optional method 3.10.7 Mar
39、tindale Abrasion. Note method used on data submission form. 3.10.2 Resistance to Abrasion, Stoll (FLTM BN 108-01) Woven, Flat Knits and Warp Knits, 0 grit 1600 cycles min DBR and Circular Pile Knits, 2 grit 1000 cycles min Commercial/Heavy Wear Fabrics, 2 grit 1000 cycles min No evidence of excessiv
40、e surface deterioration. The resistance to abrasion of production material shall be equal to or better than that exhibited by the Fabric Proposal approved by Materials Engineering. ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-A1/A2/A3/A4 Copyright 2013, Ford Global Technologies, LLC Page 7 of 18 3.1
41、0.3 Resistance to Marking (FLTM BN 108-01, No 10 cotton duck abradant, 13 N load, 21 kPa pressure) Commercial/Heavy Wear 1500 cycles min Passenger 250 cycles min No evidence of excessive surface deterioration. The resistance to abrasion of production material shall be equal to or better than that ex
42、hibited by the Fabric Proposal approved by Materials Engineering. 3.10.4 Resistance to Snagging No excessive surface snagging or pulling of individual fibers or yarns. The resistance to snagging of production material shall be equal to or better than that exhibited by the Fabric Proposal approved by
43、 Materials Engineering. 3.10.4.1 Taber Snagging (FLTM BN 108-07, 1000g load/each arm, H18 wheels) Knit and Pile Fabrics 200 cycles min 3.10.4.2 Mace Snagging (FLTM BN 108-11) Flat Woven and Flat 600 cycles min Knit Fabrics 3.10.5 Resistance to Pilling, target requirement * Mark 4/Rating 4 * (VDA 230
44、-210 with 751 hook tape, Small head 38mm, 12 kPa load, 50 cycles) * Pending further data collection The resistance to pilling of production material shall be equal to or better than that exhibited by the Fabric Proposal approved by Materials Engineering. 3.10.6 Tuft Bind* 100 cycles min (ASTM D 3885
45、, using flexing bar) *This test is required for woven pile fabrics only. Prepare two fabric specimens, one warp and one fill, measuring 50 x 250 mm Use 500 g flexing bar load. Operate test for 100 cycles, abrading the back surface of the specimen. No tuft pull out, and shall be equal to or better th
46、an the Fabric Proposal approved by Materials Engineering. ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-A1/A2/A3/A4 Copyright 2013, Ford Global Technologies, LLC Page 8 of 18 3.10.7 Martindale Abrasion* (FLTM BN 158-01) Run the machine for 10,000, 20,000, 30,000, 40,000 and 50,000 cycles for Insert F
47、abric. Run to 60,000 cycles for bolster fabric. Remove one sample at completion of the stated number of cycles Flat Woven No threads broken, no pilling Pile fabrics A uniform amount of pile must remain Knitted fabrics No holes, no pilling All types The design characteristics of the fabric must not b
48、e significantly removed or changed by wear. Resistance to abrasion of production material shall be equal to or better than that exhibited by the Fabric Proposal approved by Materials Engineering. * optional method 3.10.1 Taber Abrasion Note method used on data submission form 3.11 FABRIC FUNCTIONAL
49、PROPERTIES Ingress Egress tests are required for all seating applications. In addition, other trim applications may require unique functional evaluations. These tests should be evaluated by a cross-functional team prior to color and trim strategy approval to assess the effects of the fabric selection, seat style, sew style, foam firmness, etc. on the predicted level of customer satisfaction and long term durability. Environmental conditions shall be as specified in the relevant functional evaluation document or as approved by
