1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 4 2015 09 28 Editorial See Summary of Revisions L. Schmalz, NA 2015 06 26 Revised Editorial revision to 2.1. Limitations paragraph L. Schmalz, NA 2013 09 11 Released M.Montgomery, FOE Controlled document at www.MATS Copyright 2015, Ford
2、Global Technologies, LLC Page 1 of 13 PERFORMANCE, FABRIC, SEAT AND TRIM, UNLAMINATED WSS-M8P18-B1 PERFORMANCE, FABRIC FOAM TRI-LAMINATE WSS-M8P18-B2 PERFORMANCE, FABRIC FOAM BI-LAMINATE WSS-M8P18-B3 PERFORMANCE, FABRIC LAMINATE, HF WELDABLE WSS-M8P18-B4 1. SCOPE These specifications define the perf
3、ormance requirements for interior seating and trim fabrics, unlaminated (B1), as a tri-laminate with fabric/foam/scrim backing (B2), as a bi-laminate with fabric/foam including PE film (B3), or with HF weldable coatings (B4). 2. APPLICATION These specifications were released for materials used as in
4、terior trim fabrics for all areas of automotive seat cushions, seat backs, and trim panels. WSS-M8P18-B1 Unlaminated, typically used for interior trim application. WSS-M8P18-B2 Fabric laminated to foam with scrim backing for seating applications. WSS-M8P18-B3 Fabric laminated to foam, including PE f
5、ilm for seating or interior trim applications. WSS-M8P18-B4 HF-weldable backing (as required to meet requirements of WSS-M15P45-B (Latest, SDS, etc.) Definitions: - Commercial vehicles/heavy wear, i.e. trucks, taxi, cargo vans, police vehicles - Passenger vehicles, i.e. cars, SUV, CUV 2.1 LIMITATION
6、S When developing new fabrics with high percentage (50%) air textured yarn, please pay special attention to the linting performance. Historical data shows fabrics containing 100% air textured yarn have shown high TGW for linting in the field. 3. REQUIREMENTS In addition to the requirements listed he
7、rein, the face fabric shall meet all requirements of the applicable material specification. Unless otherwise specified, all initial evaluation shall be conducted on a tri-laminate with soil repellent coating (SR) using 3 mm nominal foam thickness as agreed with the responsible Materials Engineering
8、Activity. The foam and lamination process must be production representative. For other thicknesses and additional fabric back-coatings the laminates must demonstrate compliance to this specification for all material lamination combinations utilized. Seat trim cover assemblies or interior trim panels
9、 employing these materials must also meet the engineering requirements of the related Ford Motor Performance specification (e.g., WSS-M15P45-B(latest), SDS, seat assembly, head-rest, etc.), along with any other requirements shown on the Engineering Drawing. The material specification shall take prec
10、edence over the performance specification, for any requirement that differs from the performance specification. Effective for 2017 Model Year and beyond, all fabric constructions and colors, including ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-B1/B2/B3/B4 Copyright 2015, Ford Global Technologies,
11、LLC Page 2 of 13 carryover (excluding micro-fiber suede) must add a soil repellent top finish. 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). Materials used in inte
12、rior applications must meet the requirements outlined in WSS-M99P2222-D1 or latest, Performance, Vehicle Interior Environment Quality Material/Component Requirements. Data must be included in material submission package. 3.2 CONSTRUCTION Face fabric shall be specified in the individual material spec
13、ification. Backing materials (scrim or coatings) and soil repellent (SR) top finish shall be applied as required to meet application and process requirements. Note: See Table 2 for new construction and color approval requirements. 3.3 APPEARANCE (FLTM BI 109-01) The color, pattern, and finish shall
14、match the approved Corporate Design master sample, or shall be as specified on the engineering drawing. 3.3.1 Instrumental Color Readings (SAE J1767) Instrumental color readings may be required at the discretion of Materials Engineering. Visual evaluation will take precedence over instrumental readi
15、ngs in cases 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. 3.4 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Num
16、ber 70 min Formation of clear film, droplets or crystals is cause for rejection. 3.5 ODOR Rating 3 max (FLTM BO 131-03) 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate 100 mm/minute max Fabric or fabric laminates shall be tested for flammability with complete material processing as they would be used
17、 in an actual production vehicle. ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-B1/B2/B3/B4 Copyright 2015, Ford Global Technologies, LLC Page 3 of 13 3.7 CONSTRUCTION PROPERTIES 3.7.1 Breaking Strength, (ASTM D5034, Grab Method, 305 mm/minute jaw speed, average of 3 samples, each direction) Unlamina
18、ted Face Fabrics 310 N min (B1), Bi-laminate (B3) for interior trim and HF weldable (B4) Tri-laminated Fabrics (B2) and Bi-laminated (B3) 400 N min Required for seating applications. Note: Some applications or manufacturing operations may have different requirements, see Materials Engineering. 3.7.2
19、 Ultraviolet Deterioration 3.7.2.1 Retained Tensile (FLTM BN 117-03, Method A,) After Xenon exposure per 3.7.1.1 Seating 40%* of original value, min surfaces Non-wear 40% of original value, min surfaces (including door) *In addition to the percent retained strength, no sample shall fall below 220 N
20、for the face fabric. 3.7.2.2 Surface Fiber Deterioration (FLTM BN 117-03, Method B, after Xenon exposure per 3.7.1.2) 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 exhibite
21、d by the Fabric Proposal and Master Sample approved by Materials Engineering. 3.7.3 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 (B1), Bi-laminate (B3) for interior trim and HF Weldable (B4) Tri-l
22、aminated Fabrics (B2 )and Bi-laminated (B3) 400 N min Required for seating applications. Note: Some applications or manufacturing operations may have different requirements, see Materials Engineering ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-B1/B2/B3/B4 Copyright 2015, Ford Global Technologies, L
23、LC Page 4 of 13 3.7.4 Seam Fatigue Resistance (FLTM BN 106-02, 3 samples on each direction) Needle hole elongation after test 3 mm, max with no “running“ permitted Required for cut and sew seating applications. 3.7.5 Tear Strength (Trapezoid) (ASTM D5587 Integration Method, average of 3 samples, eac
24、h direction) Unlaminated Face Fabrics 50 N min (B1), Bi-laminate (B3) for interior trim and HF Weldable (B4) Tri-laminated Fabrics (B2) and Bi-laminated (B3) Required for seating applications. 100 N min Trim application 50 N min Note: Some applications or manufacturing operations may have different
25、requirements, see Materials Engineering 3.7.6 Martindale Abrasion (FLTM BN 158-01) Run the machine for 10,000, 20,000, 30,000, 40,000, 50,000 use instrumental method, FLTM BN 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 instru
26、ment 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 colorimeter measurement 4 additional times on the same sample and average all 5 results to minimize measurement error. The average
27、 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 (e.g., uneven pressure of the crock finger). 3.8.3.1 Frequency of Testing The following minimum guidelines for frequency of t
28、esting shall apply unless prior written agreement has been obtained from SQA and Materials Engineering. Once/roll* . All red polyester fabrics . All ISIR submittals . All Master Samples and Color Concepts . All fabric/color combinations which have NOT demonstrated process capability below 4.3 E Once
29、/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 manufacturer to a customer (e.g., 45 - 70 m). 3.8.4 Soiling and Cleanability (FLTM BN 112-08, AATCC Evaluation Procedure 2) After Cl
30、eaning Rating 4 min Standard Soil, Grease, Coffee 3.8.5 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
31、50 mm AATCC Crockmeter Test cloth with a light, 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 ins
32、pect for any color transfer. The amount of color transfer shall not be greater than that exhibited by the Master Sample approved by the Materials Engineering Activity. ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-B1/B2/B3/B4 Copyright 2015, Ford Global Technologies, LLC Page 7 of 13 3.8.6 Resistance
33、 to Staining Rating 4 5 min (FLTM BN 112-12, AATCC Procedure 2 and Instrumental color readings) Note: Instrumental color readings (SAE J1767) may be required at the discretion of Materials engineering. Visual evaluation will take precedence over instrumental readings in cases of dispute. 3.9 FABRIC
34、FUNCTIONAL 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 fabr
35、ic 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 Materials Engineering. Fabrics must also meet the functio
36、nal properties as required by Ford Motor Company trim assembly manufacturing facilities and/or Full Service Supplier. These properties may include dielectric bonding or high frequency welding tests, grinning evaluations, curling or distortion, pattern bowing and skewness and sewability. Guidelines f
37、or identification of roll marking and put-up shall also be established. 3.9.1 Anti-Static Finish (FLTM BN 156-01) Surface Resistance 5x104 Mohms max 3.10 TRIMMABILITY PROPERTIES 3.10.1 Stretch and Set (SAE J855) Stretch, %, range Report only Set, %, range Report only 3.10.2 Shrinkage, each direction
38、 Water Shrinkage 6% max (FLTM BN 105-01) Heat Shrinkage 6% max Test Method: Prepare test sample as specified in FLTM 105-01. Place sample in an 90 +/- 2 C oven for 90 minutes. Remove and measure shrinkage immediately. 3.10.3 Shrinkage, Backing Fabric, (A2 only) 2% max (Backing fabrics only) Test Met
39、hod: Cut a 100 x 100 mm specimen from the scrim fabric with sides parallel to the wales and/or courses direction. Measure the original length of the backing fabric in each direction (Lo). Place the specimen, backing fabric downwards, on stainless wire gauze over a beaker (min diameter of 125 mm) of
40、boiling water. Steam for 60 +/- 2 s. Cool to room temperature. Re-measure the dimensions of the backing fabric in both ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-B1/B2/B3/B4 Copyright 2015, Ford Global Technologies, LLC Page 8 of 13 directions after steaming (Li). Shrinkage = (Lo - Li)/Lo x 100 3.
41、10.4 Determination of Broken Fabric Fibers in a sewn seam (FLTM BN159-01, required for knit fabrics) Requirement -Max 4 broken fibers per 250 mm -Close grouping of broken fibers would require further evaluation and approval by Materials Engineering -No broken yarns -No fuzzy appearance of the seam N
42、ote: An additional evaluation must be done on full seat cover sewn in production 3.11 LAMINATE REQUIREMENTS (B2, B3 only) In addition to the requirements listed in this paragraph, the production laminates shall meet Fogging, Odor, Flammability requirements and the Urethane Foam material specificatio
43、n. All of the tests must be additionally performed by the production lamination suppliers. 3.11.1 Adhesion Strength, (face and backing fabrics) (FLTM BN 151-05, Method A, aging condition specified below) Face fabric to foam Flame Bonded Adhesive Bonded (N min) (N min) As received 6.0 6.0 After aging
44、 7 d at 100 +/- 2 C, 6.0* 6.0* Autoclave 6.0* 6.0* (ASTM D3574, J2, 3 h at 115 C) Cleaning 6.0* 6.0* Backing fabric to foam As received 3.5 3.5 After aging 7 d at 100 +/- 2 C 3.5 3.5 The fabric shall not separate cleanly from the foam surface and the peeled fabric specimen shall exhibit foam particl
45、es adhering to the total peeled surface. *Test required for initial approval only. 3.11.2 Crease Test - WMD and AMD Report only As approved between full service supplier and fabric lamination supplier and reported per control plan ENGINEERING MATERIAL SPECIFICATION WSS-M8P18-B1/B2/B3/B4 Copyright 20
46、15, Ford Global Technologies, LLC Page 9 of 13 (For all foam thicknesses) Test Method: Apparatus (see Figure 1) The forms are molded from clear acrylic sheeting as per Figure 1. Form A has a radius r = 100 mm Form B has a radius r = 75 mm Form C has a radius r = 50 mm Form D has a radius r = 30 mm P
47、rocedure: Cut 3 test specimens, approximately 200 - 250 mm x 75 mm with the longer dimension parallel to the roll direction and also 3 specimens across the roll direction. It is important that both the original sample and the individual test specimens are not folded or creased prior to testing. Bend
48、 the test specimen, without undue tension or pressure around form A with the face side to the clear acrylic form. Inspect the specimen through the acrylic sheet for evidence creasing or collapse of the laminate foam. If the specimen is acceptable on form A repeat the test on from B then C and then o
49、r until evidence of creasing occurs. Report the identification letter of the test form with the smallest radius on which the majority of test specimens pass. 3.11.3 Laminate Thickness (total thickness) Report Only (ASTM D1777, circular presser foot area 645 mm2, 2.8 g force, 43 Pa) 3.11.4 Resistance to Curling The test specimen must not raise itself at any point for more than 13 mm unless otherwise agreed when tested as per following test method: Die cut across the entire width of the mater
