1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Para. No. Revisions1978 11 08 Metricated & Retyped CAHI-RD5720066-1591972 05 19 Released ESB-M9H65-A AB1-778WP 3948-a Page 1 of 3SCRIM, POLYESTER NETTING - 3.0 oz/yd 2 (0.102 kg/m 2 ) ESB-M9H65-ASCRIM, POLYESTER NETTING - 2.0
2、oz/yd 2 (0.068 kg/m 2 ) ESB-M9H65-B1. SCOPEThe materials defined by this specification are polyester nettings ofgood quality and uniform composition, composed of three layers of yarns,bonded at right angles to simulate a plain woven fabric.2. APPLICATIONThis specification was released originally for
3、 materials used asreinforcement fabrics for the construction of seating assemblies.The ESB-M9H65-A scrim is used as a bottom foundation fabric forspring supports, and as a spring facing or listing. It is also used asan adhesively bonded and/or stitched foundation for cotton pads andmolded foam seat
4、cushions and backs.The ESB-M9H65-B scrim is used as a molded in place reinforcement inthe manufacture of molded foam seat cushions and backs.3. REQUIREMENTS3.1 CONDITIONINGAll test values indicated herein are based on material conditionedin a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relativ
5、ehumidity for 24 h prior to testing and tested under the samecontrolled conditions.3.2 COMPOSITION - YARN SIZE AND DESCRIPTION(ASTM D 629)Yarn 1000 den (110 tex) (polyester, continuous filament)Adhesive polyvinyl chloride with flame retardant phosphateplasticizer3.3 CONSTRUCTION ESB-M9H65-A ESB-M9H6
6、5-B(ASTM D 1910)Ends/in (Ends/100 mm) 5 +/- 5% 5 +/- 5%(20 +/- 5%) (20 +/- 5%)Picks/in (Picks/100 mm) 5 (20) 3 (12)3.4 WEIGHT, oz/yd 2 (kg/m 2 ), min 3.0 (0.102) 2.0 (0.068)(FLTM BN 6-1)ENGINEERING MATERIAL SPECIFICATION ESB-M9H65-AESB-M9H65-BWP 3948-b Page 2 of 33.5 BREAKING STRENGTH, min(ASTM D 16
7、82, Grab Method)Warp, lb (N) 60 (270) 50 (220)Fill, lb (N) 60 (270) 30 (130)3.6 BURST STRENGTH, ESB-M9H65-A ESB-M9H65-Bpsi ( MPa), min(ASTM D 231,avg. of 5 tests) 140 (1.0 MPa) 100 (0.7 MPa)3.7 FLEX MOLD, DELTA ESB-M9H65-A only(FLTM BN 2-4, Procedure B)Original 10,000 cycles - No bond separationsHea
8、t aged (24 h at 82 C) 10,000 cycles - No bond separations3.8 YARN BOND STRENGTH, minOriginal 5 lb (22 N)Wet (24 h water immersion at 23 +/- 2 C) 5 lb (22 N)Heat aged (24 h at 82 C) 5 lb (22 N)Test Method: ASTM 1682, except:. Crosshead speed: 5 in (130 mm)/minute.Sample size: 3 in (75 mm) wide.Sample
9、 preparation: sample shall have the middle yarn extendingfrom the end of the sample as shown. Clip this yarn 10 bond pointsfrom “A“ as shown.Clamp extended yarn in upper jaw. Clamp bottom of sample in jawmeasuring 2 x 3 in (50 x 75 mm).Start crosshead and extend until the 10 bond points separate.Tes
10、t 5 samples in each direction, and compute their average.ENGINEERING MATERIAL SPECIFICATION ESB-M9H65-AESB-M9H65-BWP 3948-b Page 3 of 3 3.9 FLAMMABILITYIn order to comply with Federal Motor Vehicle Safety Standard No.302, the materials, portions of components, and composites shallnot burn, or transm
11、it a flame across its surface, at a rate of morethan 4 in (101 mm) per min. To demonstrate compliance, the samplesize and method of testing shall be in accordance with FLTM BN24-2.3.10 PERFORMANCE - ENVIRONMENTAL AGINGAll materials, portions of components, and composites defined bythis specification
12、 that have not been treated, modified orreformulated and exceed a max burn rate of 3.0 in (76 mm) per minas specified by the Flammability Lot Sampling Plan of FLTM BN 24-2,must be evaluated for permanency of the materials flame retardantproperties per ESB-M25P3-A according to the acceleratedenvironm
13、ental aging requirements applicable to the basic materialcategory of this particular specification.Any material, portions of components, and composites defined bythis specification that have been treated, modified or reformulatedto conform to Flammability Lot Sampling Plan of FLTM BN 24-2,regardless
14、 of max burn rate, must be evaluated for both permanencyof materials flame retardant properties and changes in mechanical,chemical and physical properties per ESB-M25P3-A applicable to thebasic materials category of this particular specification.3.11 FLAMMABILITY TEST PROGRAMMaterials, portions of c
15、omponents, and composites governed by thisspecification must also comply with the requirements of ES-D3AB-11014-AA.3.12 COLD FLEXIBILITY(FLTM BN 2-1, except mandrel diameter shall be 1/2 in (13 mm)The yarn and yarn bonds of the material shall remain flexible andnot crack when bent 180 at -34 C.3.13
16、SUPPLIERS RESPONSIBILITYMaterial supplied to this specification must be equivalent to thatoriginally approved. Changes in formulation or processing shallnot be made without prior approval as described in SupplierProcedure I-A.4. APPROVAL OF SUPPLIERSSuppliers to this specification must be approved by the affected productengineering office. Procedure for gaining approval of a specificmaterial to a new/existing ES-M specification is contained in SupplierProcedure I-A. Approved new suppliers will be added to the EngineeringMaterials Approved Source List.
