1、Designation: D 3656 07Standard Specification forInsect Screening and Louver Cloth Woven fromVinyl-Coated Glass Yarns1This standard is issued under the fixed designation D 3656; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the ye
2、ar of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers the
3、requirements for vinyl-coated glass yarn insect screening and louver cloth.1.2 This specification is intended to assist ultimate users bydesignating the sizes and types of these products that aregenerally available in the industry.1.3 This specification shows the terminology and require-ments for:1.
4、3.1 Commercial standard vinyl-coated glass yarn insectscreening designed and woven primarily for installation in oron any dwelling, patio, screening enclosure, building, orstructure for the purpose of keeping out flies, mosquitoes, andmost insects.1.3.2 Vinyl-coated glass yarn louver cloth used exte
5、nsivelyin soffit and louver vents to keep out most large insects, birds,and airborne litter, while at the same time providing foradequate ventilation and air circulation.1.4 This specification shows the values in both SI units andinch-pound units. “SI units” is the technically correct name fora syst
6、em of metric units known as the International System ofUnits. “Inch-pound units” is the technically correct name forthe customary units used in the United States.The values statedin inch-pound units are to be regarded as the standard. Thevalue in SI units are provided for information only.1.5 The fo
7、llowing precautionary caveat pertains only to thetest methods portions, Sections 8-19, of this specification. Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and
8、healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2D 123 Terminology Relating to TextilesD 1776 Practice for Conditioning and Testing TextilesD 3374 Specification for Vinyl-Coated Glass YarnsD 3773 Test Methods for Lengt
9、h of Woven FabricD 3774 Test Method for Width of Textile FabricD 3775 Test Method for Warp (End) and Filling (Pick)Count of Woven FabricsD 3776 Test Methods for Mass Per Unit Area (Weight) ofFabricD 3786 Test Method for Bursting Strength of TextileFabricsDiaphragm Bursting Strength Tester MethodD 40
10、28 Specification for Solar Screening Woven fromVinyl-Coated Fiber Glass YarnD 4372 Specification for Flame-Resistant Materials Used inCamping Tentage3D 4912 Test Method for Fabric Stability of Vinyl-CoatedGlass Yarn Insect Screening and Louver ClothD 4929 Test Methods for Determination of Organic Ch
11、lo-ride Content in Crude OilD 7018 Terminology Relating to Glass Fiber and Its Prod-ucts2.2 AATCC Standards:4Evaluation Procedure 1, Gray Scale for Color Change2.3 ANSI/ASQC Standards:5ANSI/ASQC Z1.4 Sampling Procedures for Inspection byAttributes1This specification is under the jurisdiction of ASTM
12、 Committee D13 onTextiles and is the direct responsibility of Subcommittee D13.18 on Glass Fiber andits Products.Current edition approved Dec. 1, 2007. Published January 2008. Originallyapproved in 1978. Last previous edition approved in 2004 as D 3656 04.2For referenced ASTM standards, visit the AS
13、TM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn.4Available from American Association of Textile Chemists and Colorists, P. O.Box 12215, Resear
14、ch Triangle Park, NC 27709.5Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ANSI/ASQC Z1.9 Sampling Procedures and Tables forIn
15、spection Variables for Percent Nonconforming2.4 Federal Standards:6CCC D-950 Specification, Dyeing and After Treating Pro-cesses for Cotton ClothsTest Method Standard No. 191a, Textile Test Methods,Method 5872 Effect of High Temperature on Cloth Block-ingStandard 595A CHG Not 1, Color Volume 13. Ter
16、minology3.1 For all terminology relating to D13.18, Glass Fiber andIts Products, refer to Terminology D 7018.3.1.1 The following terms are relevant to this standard:atmosphere for testing textiles, insect screening, louver cloth,mesh.3.2 For all other terms related to textiles, refer to Terminol-ogy
17、 D 123.3.34. Classification4.1 Vinyl-coated glass yarn insect screening is produced intwo basic classes and mesh to afford required strength andinsect protection using yarns as directed in SpecificationD 3374. These two classes are as follows:4.1.1 Class 1Insect screening woven from vinyl-coatedglas
18、s yarn having a nominal thickness of 0.292 mm (0.0115in.).4.1.2 Class 2Insect screening woven from vinyl-coatedglass yarn having a nominal thickness of 0.330 mm (0.013 in.).4.2 The mesh, width, and colors are listed in Table 1.4.2.1 For vinyl-coated glass yarn insect screening not listedin Table 1,
19、the mesh, width, and colors shall be agreed uponbetween the purchaser and supplier.5. Sampling and Test Specimens5.1 SamplingOn a continual basis, samples are selectedrandomly from each mesh and tested to insure compliance,unless otherwise agreed upon between the purchaser and thesupplier.5.2 Test S
20、pecimensFor insect screening or louver clothappearance, width, and length testing, a roll shall serve as thetest specimen. For other properties, take the test specimen(s)from the roll. No specimen shall be taken closer than 25 mm (1in.) from the edge or 0.9 m (1 yd) from the end of the roll.REQUIREM
21、ENTS6. General Requirements6.1 Material:6.1.1 WorkmanshipInsect screening or louver cloth shallbe made utilizing input yarns that meet the requirementsspecified in Specification D 3374. Products may contain amaximum of one defect in the filling direction affecting lessthan 50 lineal mm (2 lineal in.
22、). Examples of defects are listedin Table 2.6.1.2 PlasticizersThe material used to coat or impregnatethe fibrous glass yarn shall be a compound of polymerized orcopolymerized vinyl chloride resin, plasticized with phosphateor phthalate ester plasticizers exclusively, pigmented andstabilized to meet
23、the requirements herein.6.1.2.1 Optional PlasticizerAt the suppliers option, plas-ticizers other than phosphates and phthalates may be usedprovided the color is not affected and the coating compound istreated with solubilized copper 8 quinolinolate which is listedas inhibitor (e) in Federal Standard
24、 CCC-D-950. The amountof fungicide shall be based on the nonvolatile content of thecoating. The coating compound shall be chemically analyzedfor copper 8 quinolinolate content in accordance with FederalStandard CCC-D-950.6.1.3 ColorThe maximum and minimum shades limitsshall be defined by color desig
25、nations listed in FederalStandard 595A as agreed upon between the purchaser andsupplier.6.1.3.1 The color designated grey shall fall between No.36492 and No. 36173 as listed in Federal Standard 595A.6.1.4 SelvageVinyl-coated glass insect screening and lou-ver cloth may be supplied with or without se
26、lvages as agreedbetween the purchaser and supplier.6.1.5 Yarn SplicesVinyl-coated glass yarn splices shall bepermitted provided they show no tails and do not exceed 25mm (1 in.) in length. Yarn splices in the insect screening orlouver cloth shall not exceed 15 per standard 30 m (100 ft) roll,and no
27、more than one splice shall occur in any 930 cm2(1 ft2)of product.6.2 Put-UpVinyl-coated glass yarn insect screening andlouver cloth shall be put-up on rolls that may be placed incontainers whose dimensions shall be agreed upon between thepurchaser and the supplier.7. Physical Requirements7.1 Appeara
28、nceUnless otherwise agreed upon betweenthe purchaser and the supplier, a roll shall be defective if itcontains two or more defects as described in 6.1.1.7.2 MeshThe standard average mesh shall be approxi-mately even-spaced as specified in Table 1 60.5 mesh per 25mm (1 in.). There are no tolerance re
29、quirements within 13 mm(0.5 in.) of the selvage.7.3 Roll LengthEach roll of insect screening or louvercloth complying with Specification D 3656 shall contain 30linear m 0, +0.6 m (100 linear ft 0, +2.1 ft).7.4 WidthThe standard average roll width shall be asspecified in Table 1 +7 or 0 mm (+0.25 in.
30、 or 0 in.).7.5 Mass per Unit AreaThe minimum average mass perunit area for each class shall be as specified in Table 3.7.6 Flame ResistanceThere shall be no propagation offlame along any specimen for longer than 10 s after removal ofthe flame source and no single specimen may propagate flamealong it
31、s entire length in any time increment.7.7 Fabric StabilityThe yarns shall be bonded at eachcontact point. The fabric stability of the finished product shall6Available from General Services Administrations, Specification and ConsumerInformation Distribution Section (WFSIS), Washington Navy Yard, Bldg
32、. 197,Washington, DC 20407.D3656072be determined in accordance with Test Method D 4912 andmeet the requirements as specified in Table 3.7.8 Bursting StrengthThe minimum average burstingstrength of the finished product in its original state and after480 h of exposure to color stability after accelera
33、ted weather-ing as directed in Section 19 shall be as specified in Table 3.7.9 Stiffness IndexThe minimum and maximum averagestiffness values are referenced in Table 4.7.10 Color Stability after Accelerated WeatheringThechange from the original color of the standard gray andcharcoal, after 480 h of
34、accelerated weathering exposure shallbe no greater than step 3, and after 960 h of acceleratedweathering exposure shall be no greater than step 2, on theAATCC Gray Scale for evaluating change in color.NOTE 1Use of other types of weathering apparatus may give weath-ering characteristics that are not
35、equivalent to the preferred apparatus.7.10.1 Exposure periods and acceptable changes in colorother than the standard gray and charcoal shall be as agreedupon between the purchaser and the supplier.7.11 For vinyl-coated glass yarn insect screening and louvercloth not listed in Table 1, the physical p
36、roperties shall beagreed upon between the purchaser and the supplier except asnoted in 6.2.TEST METHODS8. Conditioning8.1 Condition the laboratory samples without precondition-ing for a period of at least5hintheatmosphere for testingglass textiles as directed in Practice D 1776, unless otherwisespec
37、ified.NOTE 2In any event, 24 h is considered ample exposure time to bringthe samples to moisture equilibrium.9. Put-Up9.1 Verify that the rolls and shipping containers conform tothe inspection agreement in the purchasers plant.TABLE 3 Minimum Sample Average Mass and StrengthPropertiesPropertyInsect
38、Screening Louver ClothClass 1 Class 2 Class 218 3 16Mesh18 3 14Mesh20 3 20Mesh8 3 8MeshMass per unit area,g/m2(oz/yd2)102 (3.0) 146 (4.3) 176 (5.2) 68 (2.0)Fabric Stability,50 mm, N (2 in., lbf)Warp 36 (8) 44 (10) 53 (12) 22 (5)Fill 27 (6) 36 (8) 44 (10) 22 (5)Minimum average burstingstrengthbefore
39、and after480-h exposureAkPa (psi)448 (65) 690 (100)AAfter 480-h exposure as directed in Section 17.TABLE 1 Generally Available Mesh, Widths, and ColorsProduct ClassNominal Yarn Diameter,m (in.)Standard ConstructionWarp by Fill Mesh/25.4mm (Mesh/1 in.)Standard WidthsColorsmm in.Insect screening 1 292
40、 (0.011) 18 3 16 610, 762, 813, 914,1067, 1219, 1524,1829, 213424, 30, 32, 36, 42, 48,60, 72, 84gray, charcoal2 330 (0.013) 18 3 14 914, 1219, 1524, 1829,2134, 2438, 274336, 48, 60, 72, 84, 96,108gray, charcoal2 330 (0.013) 18 3 14 914, 1219, 1829, 2134 36, 48, 72, 84 aqua2 330 (0.013) 20 3 20 914,
41、1219, 1524, 1829,213436, 48, 60, 72, 84 gray, charcoalLouver cloth 2 330 (0.013) Less than 12 3 12 152, 203, 305, 610,914, 12196, 8, 12, 24, 36, 48 gray, charcoalTABLE 2 Examples of DefectsA,BBias or bowed filling:For widths # 1220 mm (48 in.) $ 13 mm (0.5 in.) Slack or tight selvageA,BFor widths 12
42、20 mm (48 in.) $ 25 mm (1.0 in.) Splicemore than one in a 300 mm2(1 ft2) areaBBroken or missing strand (end or pick),A,BSplice more than 25 mm (1 in.) in lengthBDamaged selvage extending into the body of the screeningBSplice not well made and showing tailsBHeavy strandA,BSpot, stain, or streakA,BJer
43、ked-in filling, slough-off, or kinky fillingA,BThin strandA,BColor bandsBTight strand (end or pick)A,BUncoated yarnsBAFor definitions of terms used in this table, refer to Terminology D 123.BAt normal inspection distance approximately 900-mm (3 ft).TABLE 4 Nominal StiffnessStiffness MGAMin MaxInsect
44、 screeningClass 1 40 120Class 2 60 180Louver clothClass 2 40 120AThese values are for design or informational purposes only.D365607310. Appearance10.1 Before doing any other testing, determine the appear-ance as directed in the procedure described in SpecificationD 4028. Count all defects of the typ
45、es as described in 6.1.1 andin Table 2 regardless of their proximity to each other, exceptwhere two or more defects represent a single local condition inthe screening. In such cases, count only the most seriousdefect.11. Mesh11.1 Determine the mesh as directed in Test MethodD 3775. Count the number
46、of warp yarns in 25 mm (1 in.) offabric width in five randomly designated places across thewidth of each roll. Count the number of filling picks in 25 mm(1 in.) of fabric length in five randomly designated places ineach laboratory sample.12. Roll Length12.1 Determine the length for each roll to be t
47、ested using theclock method as directed in Test Method D 3773, Option C.13. Width13.1 Determine the fabric width as directed in Test MethodD 3774, Option A. Measure the width of the screening at fiveevenly spaced points along the length of the roll. Make nomeasurements within 0.9 m (1 yd) of the end
48、s of the roll.14. Mass per Unit Area14.1 Determine the mass per unit area of test specimenstaken from the roll as directed in Test Method D 3776, OptionC.15. Flame Resistance15.1 Determine the flame resistance as directed in theprocedure for wall and top materials in Test Method D 4372.Test eight sp
49、ecimens from each roll to be tested, with four fromthe warp and four from the filling direction of the material. Cutthe specimens 70 by 305 mm 6 2 mm (2.75 by 12 in. 6 0.062in.) with the long dimension of the specimen in the direction tobe tested and with different warp ends in each of the warpspecimens and different filling picks in each of the fillingspecimens.16. Fabric Stability16.1 Test 10 specimens from each roll to be tested asdirected in Test Method D 4912. Cut the specimens 50 by 125mm 6 2mm(2by5in.6 0.062 in.) with the long dimensionof the sp
