1、 ENGINEERING STANDARDS Material Specification EDS-M-6068 Automotive Interior Fabrics Copyright 2011 General Motors Company All Rights Reserved November 2011 Originating Department: GM Korea Engineering Standards Page 1 of 22 Version: 2 1 Scope 1.1 Material Description. Fabrics covered by this specif
2、ication are made from fibrous textile materials that are knit, woven, non-woven, or non-conventional in structure. This specification also covers laminated fabric constructions. 1.1.1 For requirements for vehicles without solar absorbing glass, contact the appropriate Materials Engineer. All interio
3、r materials are developed to be used in vehicles with solar glass, therefore performance may be compromised if used in non- solar glass vehicles. 1.2 Symbols. This code defines the material construction and will be assigned by the responsible department. 1.3 Typical Applications. This specification
4、describes aesthetic fabrics used for interior trim applications such as seat covers, door trim panels, overhead trim (headliner, visor, sunshade), pillar coverings, windlace fabrics, rear window trim (excluding carpet) and other applications. 1.3.1 Unless otherwise specified, the requirements for wi
5、ndlace fabrics are the same as those for headliner fabrics. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. AATCC 118 ASTM 3882 ISO 105-A01 ISO 105-A02 ISO 105-A03 ISO 105-B06 cond.5 ISO 105-X12 ISO 5084 ISO 9237
6、 ISO 12947 ISO 13937-2 ISO/IEC 17025 2.2 GM Standards/Specifications. GMW3001 GMW3010 GMW3059 GMW3116 GMW3182 GMW3205 GMW3208 GMW3211 GMW3217 GMW3220 GMW3221 GMW3232 GMW3235 GMW3259 GMW3283 GMW3326 GMW3347 GMW3387 GMW3417 GMW4090 GMW4141 GMW4217 GMW4726 GMW4750 GMW6754 GMW6992 GMW8081 GMW14102 GMW14
7、124 GMW14128 GMW14141 GMW14146 GMW14162 GMW14297 GMW14364 GMW14444 GM KOREA ENGINEERING STANDARDS EDS-M-6068 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 2 of 22 Version: 2 GMW3390 GMW3402 GMW3405 GMW3414 GMW14775 GMW15058 GMW15651 2.3 Additional References. Best Prac
8、tice #112003 TMC003 Material Safety Data Sheet guidance documents 3 Requirements 3.1 General Requirements. 3.1.1 Standard Conditions (GMW3221-A). All test specimens shall be conditioned to GMW3221 Code A for a minimum of 24 h, unless the test method indicates that standard conditioning is not requir
9、ed or that other conditions apply. 3.1.2 Sampling and Test Specimen Preparation. All test specimens shall be taken from the area beyond the initial 2 m of production and at least 50 mm from either selvage edge. Prepare test specimen as required in the respective test method. 3.1.3 Visual Evaluation
10、of Automotive Trim (GMW6992). The color, pattern, aesthetics and other related qualities shall be evaluated and approved by the responsible engineering department as an acceptable match to the engineering approval sample when viewed under conditions set forth in GMW6992. 3.1.4 Deviation from Defined
11、 Test Methods. Deviations from the conditions of any test method shall be agreed upon between supplier and vehicle manufacturer. All deviations shall be specified on the component drawings, material construction specification form, and Statement of Requirements and shall be indicated as such on test
12、 certificates and reports. 3.1.5 Documentation. Samples of components or material released to this specification shall be tested for conformity with the requirements of this specification and approved by the responsible GM Department prior to the start of delivery of production level components or m
13、aterials. 3.1.5.1 Any change to the component or material, e.g., design, function, properties, manufacturing process and/or location of manufacture requires a new release of the product. It is the sole responsibility of the supplier to provide the customer, unsolicited, with documentation of any cha
14、nge or modification to the product/process, and to apply for a new release. 3.1.5.2 If not otherwise agreed to, the entire verification test shall be repeated and documented by the supplier prior to start of delivery of the modified or changed product. In some cases a shorter test can be agreed to,
15、between the responsible GM Department and the supplier. 3.1.6 Lab Accreditation. Lab testing shall be performed by a laboratory that conforms, meets requirements, may not be formally recognized by a third party, to ISO/IEC 17025 and is acceptable to the responsible GM Department. Test reports must c
16、onform to Sections 5.10.2 and 5.10.3 of ISO/IEC 17025. Supplier shall submit a letter of compliance. 3.1.7 Material Construction Specification. All required information shall be reported on the Construction Specification Form (See Appendix A). A specification form shall be submitted along with each
17、fabric and fabric composite for engineering construction approval. Established values for a construction will be reported on and controlled within the limits established on the Construction Specification Form. These forms are available at . (https:/ report the average for each direction. The maximum
18、 allowable stretch is 25%; the maximum allowable set is 4%. 3.2.12.1 Production stretch tolerance shall be 5% if initial value is 20% and 10% if initial value is 20%. The stretch tolerance will be reported on and controlled within the limits established on the Construction Specification Form. 3.2.13
19、 Tear Strength. Test three specimens from the MD and three specimens from the CMD; for Trouser Tear consider the short direction of the test specimen the direction of test. Report the average for each direction in N. 3.2.13.1 Trapezoid Tear (GMW3326). Use for woven, nonwoven and all headliner type f
20、abrics. The minimum strength shall be as specified in Table 2 for both MD and CMD. Table 2: Trapezoid Tear Minimum Strength Headliner Type Fabrics Minimum Requirement Knit or nonwoven headliner, visor, sunshade slight fiber disturbance with no yarn breakage; no change in design intent. 6 Moderate Ch
21、ange - fluffy surface and noticeable fiber breakage causing a change in design intent; slight yarn breakage; slight bearding. 4 Significant Change -, significant amount of yarn or fiber breakage; noticeable bearding. 2 Severe Change - Severe bearding and surface distortion. 3.2.16 Snagging Resistanc
22、e, Rivet Method (GMW14775). Applicable for fabrics with long floats, generally 2 mm floats, at the discretion of the GM engineer. Test in the MD, CMD, bias left and bias right directions. The requirement is no snagging or catching of the float by the rivet, in all directions and angles of test. 3.2.
23、17 Pile Distortion - Environmental (GMW4141). For pile fabrics only. A rating of 6 in the direction producing the worst distortion, as defined in the test method, is required. 3.2.18 Dimensional Stability. Dimensional change shall be 2.5% in the MD and CMD. The specimen shall exhibit a satisfactory
24、rating, which is no degradation nor delamination of the layers, foam or film. Yellowing of the adhesive, foam or film that does not affect the appearance of the face fabric is allowed. 3.2.18.1 Test all fabrics per GMW4217. Test one specimen using the wet condition. Test another specimen using the d
25、ry condition. For both the wet and dry condition, test the specimens twice. Report the dimensional changes for both wet and dry conditions after the first and second test. 3.2.18.1.1 For laminated fabrics report curl at completion of the second cycle as directed in GMW4217. 3.2.18.2 Test all fabrics
26、 per GMW14124 Cycle M. One specimen shall be exposed to all conditions of Cycle M two times. Measure the specimen while it is at each condition (e.g. hot condition, humidity condition, cold and ambient). Report the dimensional change after each condition. 3.2.18.3 For instrument panel and rear windo
27、w trim applications only, in addition to 3.2.18.1 and 3.2.18.2, test all fabrics to GMW14124, Cycle R. Cut one 300 x 300 mm specimen marked parallel to the MD (see Figure 1). Report the percent change in each direction of the specimen after completing 20 cycles of Cycle R. Figure 1: Shrinkage Test S
28、pecimen GM KOREA ENGINEERING STANDARDS EDS-M-6068 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 7 of 22 Version: 2 3.2.19 Lint Pick-up and Retention (GMW3347). For pile and napped seating fabrics only. A rating 6 is required for lint pick-up. A rating 8 is required for
29、 lint retention after 5 total strokes to and fro of the vacuum. For double needle bar pile fabrics, test specimens from both sides (top and bottom) and record the piece number for each, along with the rating. 3.2.20 Crocking (ISO 105-X12). The results shall be 4 when compared to the ISO Grey Scale f
30、or Staining, ISO 105-A03 after ten strokes to and fro for both wet and dry conditions. For wet testing, use a 65% 5% wet pick-up of the crocking cloth. 3.2.21 Dye Migration (GMW14141). The rating of each fiber within the multi-fiber test fabric shall be 4 when compared to the ISO Grey Scale for Stai
31、ning, ISO 105-A03 and 4 for color change of the specimen using the ISO Grey Scale for Color Change, ISO 105-A02. Perform using distilled or deionized water only. 3.2.22 Water Spotting (GMW14102). Specimen size shall be 400 x 400 mm. Amount of water used shall be 5.0 ml. Perform the water spotting pr
32、ocedure three times on the same area, allowing the specimen to dry for at least 24 h after each application of water. Evaluate after each drying process and report the most noticeable results. No staining, ring formation or haptic change is allowed. If the water wicks to the edge, increase the speci
33、men size. 3.2.23 Soil and Cleaner Resistance (GMW3402, Part A dark stains on light color materials or light stains on dark color materials. 3.2.23.2 View each soil specimen from various angles by rotating the specimen. Report the individual ratings for each tested specimen. Also report the average o
34、f all soiled specimens. The requirement is 6 for each tested specimen and 6 for the average. No ring formation or haptic change is allowed. 3.2.23.3 For Part B, each tested specimen shall display no more than a slight appearance change after exposure to each cleaner. No ring formation or haptic chan
35、ge of the specimen is allowed. A rating of 4 is also required when evaluated using an ISO 105-A02 Gray Scale for Color Change The crocking cloth shall have a rating of 4 when compared to the ISO 105-A03 Grey Scale for Staining. GM KOREA ENGINEERING STANDARDS EDS-M-6068 Copyright 2011 General Motors
36、Company All Rights Reserved November 2011 Page 8 of 22 Version: 2 Note: See 3.5 for specific requirements related to soil repellent treated fabrics for seating applications. 3.2.24 Flammability (GMW3232). For initial approval and routine quality control see 6.1.1.1 and 6.1.1.2 of GMW3232. Note: Fabr
37、ic or fabric laminates that will not be 100% bonded to a substrate (e.g. Cut and sew application) are required to meet GMW3232 as rolled goods. Fabric or fabric laminates that will be 100% bonded to a substrate must meet GMW3232 as a composite (fabric laminate plus part substrate). 3.2.24.1 After Co
38、nditioning (GMW3232). Immediately prior to tests all test specimens shall be conditioned for a minimum of 24 h according to GMW3221-A. 3.2.24.2 After Aging (GMW3232). The test cycle shall commence with 48 1 h at 40 3C and 93 5% Relative Humidity (RH) followed by 168 1 h at 90 3C and completed withou
39、t interruption. Repeat 3.2.24.1 before testing flammability. 3.2.25 Mildew (GMW3259). There shall be no visible growth or odor of mildew. 3.2.26 Odor (GMW3205). Report both wet and dry results. A rating of 6 is required. Use a ratio of specimen size to container size of 1:50. 3.2.27 Fogging (GMW3235
40、, Code A Photometric). Report the average fog number for three specimens. A reflectance value of 90 minimum with either a dry uniform or dry non- uniform film is required. Specimens that form crystals, an oily film, or discernable droplets 0.05 mm in diameter at 40X magnification do not meet this re
41、quirement. The temperature shall be 90C for seating, overhead/pillar and door trim fabrics, and 110C for rear window trim and instrument panel fabrics. 3.2.28 Electrostatic Behavior (GMW6754 Method A). At the discretion of the approving GM engineer. For anti-static treated fabrics only. The requirem
42、ent is 5 x 1010 . 3.2.29 Air Permeability (ISO 9237). Required for seating and headliner fabrics. Report the air permeability in mm/s using a test pressure of 100 Pa. Report on the Construction Specification Form. 3.2.30 Sound Transparency (GMW14128). For fabric to be used as a speaker covering only
43、. 3.2.31 Colorfastness to Artificial Light, Xenon Arc Method, A rating of 3 per ISO 105-A02 Grey Scale for Color Change is required. Evaluate per ISO 105-A01. A noticeable chroma (saturation) change with minimum hue change is acceptable. Evaluate specimens as specified in GMW6992. Polystyrene refere
44、nce plastic and/or blue wool is to be used to verify the xenon arc apparatus. 3.2.31.1 100% Polyester Fabrics: Seating and Below Beltline Trim Panel Applications. The requirement for approval is 1204.0 kJ/m2 per Table 8. Table 8: Xenon Method (GMW3414, Cycle A, 105C, 420 nm) Application Requirement
45、For Information Seating/Door fabrics only 1204.0 kJ/m2 903.0 kJ/m2 1053.5 kJ/m2 3.2.31.2 All Other Applications: (other than 3.2.31.1). Xenon shall be performed and reported for information only. Methods listed in Tables 9 to 12 may be used. Note: Natural Weathering is the requirement for approval.
46、Table 9: Xenon Method (ISO 105-B06, Condition 5) Application Recommended Level Headliner/Visor/Sunshade 150.4 kJ/m2 Pillar/Windlace 225.6 kJ/m2 Seating/Doors 338.6 kJ/m2 Rear Window Trim/IP 451.2 kJ/m2 GM KOREA ENGINEERING STANDARDS EDS-M-6068 Copyright 2011 General Motors Company All Rights Reserve
47、d November 2011 Page 9 of 22 Version: 2 Table 10: Xenon Method (GMW14162, Cycle A, 100C, 420 nm for Pile Fabrics Only) Application Recommended Level For Information Headliner 329.0 kJ/m2 658.0 kJ/m2 Seating/Doors 658.0 kJ/m2 987.0 kJ/m2 Table 11: Xenon Method (GMW14162, Cycle B, 100C, 300 to 400 nm)
48、 Application Recommended Level For Information Headliner, Sunvisor, Sunshade 14 MJ/m2 28 MJ/m2 Pillar, Windlace, Seating/Doors 28 MJ/m2 42 MJ/m2 Table 12: Xenon Method (GMW14162, Cycle C, 115C, 300 to 400 nm) Application Recommended Level For Information Rear Window, Trim I/P 18.7 MJ/m2 37.3 MJ/m2 3
49、.2.32 Natural Weathering (GMW3417 U/G-TSTL-XX). A rating of 3 per ISO 105-A02 Grey Scale for Color Change is required. Evaluate per ISO 105-A01. A noticeable chroma (saturation) change with minimum hue change is acceptable. Evaluate specimens as specified in GMW6992. 3.2.32.1 Natural Weathering is performed for information only if Xenon method 3.2.31.1 is used. 3.2.32.2 All other applications:
