1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW15377 Staining and Cleaning of Leather and Plastic Roll Goods Copyright 2013 General Motors Company All Rights Reserved June 2013 Page 1 of 3 1 Scope Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the event of co
2、nflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This procedure shall be used to determine the resistance of leather and plastic roll goods (PRG) to soiling after rubbing with black denim. If soiling does occur, this procedure will also be us
3、ed to determine the cleanability. 1.2 Foreword. Not applicable. 1.3 Applicability. This procedure is applicable to leather and plastic roll goods used in seating and other trim applications and is used in conjunction with GMW3402. 2 References Note: Only the latest approved standards are applicable
4、unless otherwise specified. 2.1 External Standards/Specifications. ISO 105-A03 ISO 12945-2 ISO 105-F09 ISO 12947-1 2.2 GM Standards/Specifications. GMW3221 GMW6992 GMW3402 2.3 Additional References. EMPA Testmaterialien AG, Moevenstrae 12, CH-915 St. Gallen, Switzerland - Indigo sulfur black denim f
5、or soiling “128/1“. Operators Guide for Martindale Machine. 3 Resources 3.1 Facilities. 3.1.1 Calibration. The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.2 Alternatives. Alternative test facilities and equipment may also be used. Howeve
6、r, all measuring variables as specified in this standard shall be determined correctly with respect to their physical definition. 3.2 Equipment. 3.2.1 Martindale abrasion tester or equivalent as described in ISO 12947-1 and ISO 12945-2 with the following parameters: a. Use a Lissajous figure with a
7、stroke of 60.5 mm 0.5 mm. b. Use an additional weight of 595 g 7 g to produce a pressure of approximately 12 kPa. 3.2.2 Weights supplied with the Martindale Machine shall be added to the apparatus. The 12 kPa weight shall be used. 3.2.3 Wool felt diameter 140 mm 3 mm as described in ISO 12947-1. 3.2
8、.4 Foam diameter 38 mm 3 mm as described in ISO 12945-2 and ISO 12947-1. 3.2.5 Suitable cutting tools for preparation of test specimens. 3.2.6 Suitable cutting tools to cut the test specimens in half. 3.2.7 Mechanical convection oven capable of maintaining a constant temperature of 85 C 3 C for 4 h.
9、 3.3 Test Vehicle/Test Piece. Leather or plastic roll goods trim material 3.4 Test Time. Calendar time: 2 days Test hours: 4 hours heat age + Martindale sample test time Coordination hours: 0 hours 3.5 Test Required Information. Not applicable. 3.6 Personnel/Skills. Not applicable. 3.7 Cleaning Mate
10、rials. 3.7.1 Cotton rubbing cloth, per ISO 105-F09. 3.7.2 Code 2 soap detergent solution as described in GMW3402 (0.5% by weight in distilled or deionized water). The soap should not have optical brighteners. The soap should dissolve in water producing a solution with a pH that is approximately neut
11、ral. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15377 Copyright 2013 General Motors Company All Rights Reserved June 2013 Page 2 of
12、3 3.8 Staining Material. Indigo sulfur black denim for soiling “128/1“, source EMPA Testmaterialien AG, Moevenstrae 12, CH-915 St. Gallen, Switzerland. 4 Procedure 4.1 Preparation. 4.1.1 A minimum of three test specimens shall be cut to approximately 150 mm 3 mm diameter. The Martindale cutter may b
13、e used to cut specimens. 4.1.2 A minimum of three pieces of Indigo sulfur black denim for soiling shall be cut to approximately 38 mm 3 mm diameter (see 3.8). The Martindale cutter may be used to cut specimens. 4.1.3 Install all fabrics following the instructions in the Operators Guide for the Marti
14、ndale Machine (or equivalent). 4.1.4 Install the weight labeled 12 kPa on the upper portion of the spindle. 4.1.5 Cut several pieces of cotton rubbing cloth per ISO 105-F09, approximately 150 mm x 150 mm (see 3.7.1). 4.2 Conditions. 4.2.1 Environmental Conditions. Condition the specimens and all oth
15、er textiles needed for conditioning according to GMW3221, Code A. 4.2.1.1 Heat soiled test specimens for 4 h at 85 C 3 C in a mechanical convection oven. The time tolerance for the oven aging is +15 minutes. 4.2.2 Test Conditions. Deviations from the requirements of this standard shall have been agr
16、eed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 Install the specimen with the wool felt (see 3.2.3) on the table of the Martindale device. Follow the instructions described in ISO 12945-2. 4.3.2 Install the black denim (s
17、ee 3.8) over foam in the specimen holder of the Martindale device typically used for abrasion testing. Follow the instruction described in ISO 12945-2. 4.3.3 Install the 150 mm (diameter) test specimens into the Martindale device using the clamping rings. Use the Lissajous rubbing motion for sample
18、testing and follow the instructions described in ISO 12945-2. 4.3.4 Place the spindles with the additional weights through the holes in the guide plate (see 3.2.2). Start the Martindale device for 1000 cycles. 4.3.4.1 After the required number of cycles, remove the soiled specimens. If soiling occur
19、red, the soil should be apparent in the shape of a square. Cut the specimen diagonally through the square from corner to corner to form two identical halves. 4.3.5 Place both cut halves for each specimen in a mechanical convection oven for 4 h at 85 C 3 C. Specimens must be removed within 15 minutes
20、 beyond the 4 h exposure. 4.3.5.1 After completion of the heat age, remove the samples from the oven. 4.3.6 For each specimen, use only one half for cleaning and the remaining half for visual evaluation only (i.e., retain half the sample with after soiling, clean the other half). 4.3.7 Visual Evalua
21、tion. Condition one half of the test specimen to the requirements of GMW3221, Code A. Evaluate the level of staining using the Grey Scale for Assessing Staining (ISO 105-A03), and record the results. Unless otherwise specified, clean the remaining half of the specimen after a minimum of 1 h after he
22、at aging. 4.3.8 Cleaning. Use a white rubbing cloth (see 3.7.1) to gently rub the soil from the outside of the soil to the inside. As the cleaning cloth becomes soiled, rotate to a clean area and continue gently rubbing. Use sufficient pressure to attempt to remove the soil without abrading or other
23、wise damaging the surface of the specimen. Clean the specimen until no color transfer is visible on the white rubbing cloth. 4.3.9 Condition the tested specimens for a minimum of 24 h to the parameters of GMW3221, Code A before visually evaluating them. Evaluate the specimen using illuminant D65 and
24、 following the guidelines in GMW6992. Evaluate the level of staining using the Grey Scale for Assessing Staining (ISO 105-A03), and record the results. 4.4 Summary of Test Method. 4.4.1 A test specimen is soiled using a Lissajous rubbing action with a black denim fabric and a 595 g 3 g, (12 kPa) wei
25、ght. 4.4.2 The test specimen is mounted on a platform, the soiling material moves along a horizontal axis sliding against the test specimen. 4.4.3 The soiled specimen is cut in half along the diagonal of the square soil, and both pieces are placed in the oven to set for 4 h. 4.4.4 Half of each soile
26、d specimen is cleaned. This is one of the halves of the original test sample. 4.4.5 The cleaned soiled area of the test specimen is evaluated for staining visually along with the original stained area. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for
27、ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15377 Copyright 2013 General Motors Company All Rights Reserved June 2013 Page 3 of 3 5 Data 5.1 Calculations. Not applicable. 5.2 Interpretation of Results. 5.2.1 Evaluate both parts of
28、the specimens, the soiled part and the part after soiling and cleaning. 5.2.2 Report any other changes of specimens (e.g., ring formation, abrasion, etc.) 5.2.3 Using illuminate D65 light and the practices in GMW6992, visually evaluate the specimens and assign a rating number per ISO 105-A03. Report
29、 the rating for each soiled/stained specimen tested (see 5.3). 5.3 Test Documentation. Report rating in the appropriate specifying material specifications data report form. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address al
30、l the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 7.2 Acronyms, Abbreviations, and Sym
31、bols. GSSLT Global Subsystem Leadership Team PRG Plastic Roll Goods 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW15377 9 Release and Revisions This standard was originated in June 2006. It was first approved by the Textiles GSSLT in Aug
32、ust 2008. It was first published in August 2008. Issue Publication Date Description (Organization) 1 AUG 2008 Initial publication. 2 JUN 2013 Five year refresh of standard. Added visual evaluation and Grey Scale Rating both after staining and after cleaning. (Textiles & Trim Materials Global Subsystem Leadership Team) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
