1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16875 Performance Requirements of Anti-Squeak, -Itch, -Rattle Fiber Tape Copyright 2013 General Motors Company All Rights Reserved January 2013 Originating Department: North American Engineering Standards Page 1 of 3 1 Scope This specificati
2、on covers the material properties and durability requirements of a flocked fabric, felt, or nonwoven sound abatement tape. These tapes are used for interior sound abatement applications where two similar or dissimilar substrate materials come into contact, causing a rubbing, chafing, itching, chatte
3、ring, rattling or squeaking noise. Typical areas of application are between interior trim parts, instrument panel components and other areas, depending on the origin of undesired sound. In most cases, the tape becomes trapped between two surfaces. 1.1 Material Description. 1.1.1 Type I material is f
4、locked fabric or felt tape coated with a permanent, acrylic, pressure-sensitive adhesive. Typically, the tape fibers are nylon; however, other polymers, or blends of polymers, can be used. The backing can be a woven blend of polyester and cotton or other polymers. Type IA tape is not exposed to any
5、ultraviolet (UV) light. Type IB tape is exposed to UV; therefore, it must exhibit weathering resistance. Type IB may be used to line the bottom of coin holders or storage bins in direct exposure locations. 1.1.2 Type II material is a nonwoven tape coated with a permanent, acrylic, pressure-sensitive
6、 adhesive. The nonwoven fiber can be various polymers, typically polyester or polyurethane. Type II material is a lower-cost, lower-performance alternative to Type I tape used in less demanding applications. 1.1.3 If there is no type callout on the drawing, the construction is assumed to be Type IA.
7、 1.2 Symbols. Not applicable. 1.3 Typical Applications. Interior sound abatement applications. 1.4 Remarks. Not applicable. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D1000 ISO 8510-2 FMVSS 302 2.2 GM S
8、tandards/Specifications. GMW3059 GMW14162 GMW3208 GMW14729 GMW3232 GMW15340 GMW3235 GMW15572 GMW14124 GMW16208 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements 3.1 Tape Performance. All tests shall be performed at ambient condition (22 3
9、) C and (55 5)% relative humidity unless otherwise indicated. 3.2 Properties. See Table 1. 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 G
10、MW16875 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 2 of 3 Table 1: Performance Properties Properties Values Type IA Values Type IB Values Type II Test Methods Liner Removability 200 N/m Maximum 200 N/m Maximum 200 N/m Maximum 180 Peel at 300 mm/minute ISO 8510-2 180
11、Peel Adhesion Note 1, N/m Minimum Not Applicable Not Applicable Not Applicable 180 Peel at 300 mm/minute ISO 8510-2 After 72 h RT 350 350 280 ISO 8510-2 After 24 h Humidity 350 350 235 GMW14729, Option A, ISO 8510-2 After 168 h Oven Aging at 70 C 350 438 350 ISO 8510-2 After Cycle D or E 350 438 350
12、 GMW14124, ISO 8510-2 Shear Strength Note 2, N/m Test at -18 C After 4 h at -18 C 7500 7500 2500 ASTM D1000 Test at 60 C After 24 h at 60 C 3500 3500 2500 ASTM D1000 Taber Abrasion, 500 cycles, CS-10, 1.0 kg Load (Type I) or 0.5 kg Load (Type II) No Wear-through to Fabric Backing No Wear-through to
13、Fabric Backing No Wear-through to Fabric Backing GMW3208 Flammability Must Conform to FMVSS 302 Must Conform to FMVSS 302 Must Conform to FMVSS 302 GMW3232 Xenon Weatherometer, Interior Cycle Not Applicable 263 kJ/m2 Note 3 Not Applicable GMW14162 Fogging Note 4, Units, Minimum 60 60 60 GMW3235, Met
14、hod B Note 1: Bond tape to production-intent substrate (if not available, use acrylonitrile butadiene styrene (ABS) (GMW15572P-ABS-T2), polypropylene (PP) (GMW16208P-PP-T2), and thermoplastic polyolefin (TPO) (GMW15340P-PP+EPDM-M20-T1U). Allow a 72 h dwell at ambient conditions prior to exposure. Af
15、ter exposure to any conditions, allow a 24 h dwell at ambient conditions prior to testing. Note 2: Bond 25 x 150 mm tape to nominal size ABS, PP, and TPO test plaques, 625 mm2 bond area. Allow a 72 h dwell at ambient conditions prior to exposure. Expose to required environment. Test at required temp
16、erature in a constant rate of extension (CRE) machine at 300 mm/minute. Note 3: No objectionable color change. A noticeable on-tone fade is acceptable. A bleached-out condition is unsatisfactory. The sample shall also show no stiffening or fiber degradation. Note 4: Photometric procedure: Bath tempe
17、rature 85 C, or as specified on the part drawing; cooling temperature of 38 C; 6 h test time; 16 h post conditioning time. The amount of fog when measured with a 60 gloss meter shall have a rating of 60 units or more. Samples that result in any visual signs of crystallinity, when viewed under 200x m
18、agnification, shall be judged to have not passed this requirement. 3.3 Shelf Life. Material shall pass all requirements of this specification after aging material in the original container 90 days at 35 C. 3.3.1 Other tests may be required to validate the specific application. 4 Manufacturing Proces
19、s Not applicable. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendations valid in the country of usage. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction o
20、r networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16875 Copyright 2013 General Motors Company All Rights Reserved January 2013 Page 3 of 3 5.2 Language. In the event of conflict between the English and domestic language, the English language shall take precede
21、nce. 5.3 Inspection and Rejection. Samples of components or materials released to a GM material specification shall be tested for conformity with the requirements of this material specification and approved by the responsible Engineering department prior to commencement of delivery of bulk supplies.
22、 A new approval must be received for any changes, e.g., properties, manufacturing process, location of manufacture, etc. If not otherwise agreed, all testing and documentation normally required for initial release must be completed. It is the responsibility of the supplier to inform the customer in
23、a timely manner, without solicitation, and to include documentation of all modifications of materials and/or processes and to apply for a new release. If not otherwise agreed, all release tests shall be repeated and documented by the supplier prior to commencement of delivery of non-conforming bulk
24、supplies. In individual cases, a shorter test can be agreed to between the responsible Engineering department and the supplier. 5.4 Material Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new product submissions, or when a change in chemical composition of an existing product has occurred, a
25、complete copy of the Material Safety Data Sheet/Safety Data Sheet must be submitted in compliance with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) requirements or other country-specific MSDS/SDS requirements. In addition, product MSDS/SDS submissions must be in c
26、ompliance with specific country General Motors TMC003 Material Safety Data Sheet/Safety Data Sheet guidance documents where available. 5.5 All materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Material
27、s supplied to this specification must be approved by General Motors. A list of approved materials can be found in MATSPC. This GM Material File is provided to third parties to reduce redundant testing of materials. If approved material already listed is used, the part supplier can use GM Material Fi
28、le reference for Production Part Approval Process (PPAP) material approval. If the decision is made to use a not yet approved material, contact GM Materials Engineering for detail on the approval process. The material approval process must be completed prior to PPAP start date of the part supplied t
29、o General Motors. 7 Notes 7.1 Glossary. MATSPC: Global repository of GM approved materials for corresponding GM Engineering Standards. 7.2 Acronyms, Abbreviations, and Symbols. ABS Acrylonitrile Butadiene Styrene CRE Constant Rate of Extension GHS Globally Harmonized System of Classification and Lab
30、eling of Chemicals GSSLT Global Subsystem Leadership Team MSDS Material Safety Data Sheet PP Polypropylene PPAP Production Part Approval Process RH Relative Humidity RT Room Temperature SDS Safety Data Sheet TPO Thermoplastic Polyolefin UV Ultraviolet 8 Coding System This standard shall be reference
31、d in other documents, drawings, etc., as follows: Material per GMW16875 9 Release and Revisions This standard was originated in October 2012. It was first approved by the Adhesives Global Subsystem Leadership Team (GSSLT) in January 2013. It was first published in January 2013. Issue Publication Date Description (Organization) 1 JAN 2013 Initial publication. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
