1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology. Standards SEALING TAPE FOR FOAMING EDS-M-6819 ISSUED DATE: 1999. 12. 30 REVISED DATE: 2003. 06. 24 VERSION: 2 EDS-M-6819SEALING TAPE FOR FOAMING PAGE: 1/3 ISSUED DATE: 1999. 12. 30 REVISED DATE: 2003. 06. 24 VERSION: 2 GM DAEW
2、OO Auto & Technology 1. PURPOSE This specification specifies the requirements of physical properties and controlling quality of the sealing tape for automobiles. 2. SCOPE This standard applies to the foam tape used to prevent leak of foaming solution in the foaming process of the passenger air bag.
3、3. MATERIAL Foam tape coated with synthetic adhesive on both sides, with polyurethane foam sticking to one side and the adhesive surface protected by siliconized cellulose paper. 4. PHYSICAL PROPERTIES Test item Test method Specifications 4.1. Structure 4.1.1. Foam (1) Material (2) Density EDS-T-767
4、3 Open cell Polyurethane foam 20 2 kg/m34.1.2. Film (1) Material (2) Thickness (with adhesive coated) EDS-T-7624-1A Polyethylene 0.12 mm Min 4.1.3. Adhesive (1) Material Polyacrylate or equivalent 4.1.4. Releasing paper (1) Material (2) Weight per unit area (3) Thickness EDS-T-7611 EDS-T-7624-1A Sil
5、iconized cellulose paper 130 g/m2Min 0.15 mm Min 4.2. Requirements for assembly 4.2.1. Tensile strength Test piece size : 150 mmTape width Pinching distance : 50 mm Test speed : 100 mm/min EDS-T-7132 0.5 N/mm2Min 4.2.2. Tensile extension EDS-T-7132 90 % Min EDS-M-6819SEALING TAPE FOR FOAMING PAGE: 2
6、/3 ISSUED DATE: 1999. 12. 30 REVISED DATE: 2003. 06. 24 VERSION: 2 GM DAEWOO Auto & Technology Test item Test method Spec 4.2.3. Adhesive strength (Test steel sheet and painting condition to follow production conditions) (1) +235K20min (2) +235K24hrs (3) +235K24hrs +802.5K 72 hrs +802.5K (4) +235K24
7、hrs 303K, 72 hrs 303K (5) +235K24hrs 4095%RH 72 hrs +235K2hrs 5 N/cm Min 7 N/cm Min 5 N/cm Min 7 N/cm Min 7 N/cm Min 5. ADDITIONAL REQUIREMENTS 5.1. The release paper, when separated from the adhesive tape, shall be easily detached without being torn. 5.2. For other details, see parts drawings. 6. M
8、ATERIAL APPROVAL PART NO. OLD P/NO. Approved Supplier Approved Raw Material Remarks 94545007 M-6819 YANGWOO M-8608 7. APPROVAL AND QUALITY ASSURANCE PROCEDURE All raw material shall be approved and regularly inspected for its quality prior to and during mass production delivery according to approval
9、 and quality assurance procedure for chemical raw materials (Spec. no. EDS-M-0102) 8. AUTOMOTIVE RESTRICTED HAZARDOUS SUBSTANCES Materials and components of parts must comply with EDS-A-0101. EDS-M-6819SEALING TAPE FOR FOAMING PAGE: 3/3 ISSUED DATE: 1999. 12. 30 REVISED DATE: 2003. 06. 24 VERSION: 2
10、 GM DAEWOO Auto & Technology 9. CODING SYSTEM In case that this material is applied as material specification number. The coding system shall be indicated as follows. “EDS-M-6819” In case that this material is applied as part number. The coding system shall be indicated as follows. PART NO. OLD P/NO
11、. DWG. NO. PART NAME 94545007 M-6819 EDSM6819 TAPE-FORM 10. RELATED STANDARDS EDS-A-0101 Automotive restricted hazardous substances for parts EDS-M-0102 Procedures for approval of chemical raw material and quality control EDS-T-7132 Test method for tensile strength & elongation EDS-T-7611 Test method for determining weight per unit area EDS-T-7624 Test method for determining thickness of trims materials EDS-T-7673 Test method for apparent density of cellular materials EDS-T-7676 Determining of the resistance to peel of self adhesive tapes and foils
