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ASTM D3656-13(R2021) pdf free download

ASTM D3656-13(R2021) pdf free download.Standard Specification for Insect Screening and Louver Cloth Woven from Vinyl-Coated Glass Yarns
1. Scope
1.1 This specification covers the requirements for vinyl- coated glass yarn insect screening and louver cloth. 1.2 This specification is intended to assist ultimate users by designating the sizes and types of these products that are generally available in the industry. 1.3 This specification shows the terminology and require- ments for: 1.3.1 Commercial standard vinyl-coated glass yarn insect screening designed and woven primarily for installation in or on any dwelling, patio, screening enclosure, building, or structure for the purpose of keeping out flies, mosquitoes, and most insects. 1.3.2 Vinyl-coated glass yarn louver cloth used extensively in soffit and louver vents to keep out most large insects, birds, and airborne litter, while at the same time providing for adequate ventilation and air circulation. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.5 The following precautionary caveat pertains only to the test methods portions, Sections 8 – 19, of this specification. This standard does not purport to address all of the safety concerns, ifany, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the appli- cability ofregulatory limitations prior to use. 1.6 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
6. General Requirements
6.1 Material: 6.1.1 Workmanship—Insect screening or louver cloth shall be made utilizing input yarns that meet the requirements specified in Specification D3374/D3374M. Products may con- tain a maximum of one defect in the filling direction affecting less than 50 lineal mm [2 lineal in.]. Examples of defects are listed in Table 2. 6.1.2 Plasticizers—The material used to coat or impregnate the fibrous glass yarn shall be a compound of polymerized or copolymerized vinyl chloride resin, plasticized with phosphate or phthalate ester plasticizers exclusively, pigmented and stabilized to meet the requirements herein. Optional Plasticizer—At the supplier’s option, plas- ticizers other than phosphates and phthalates may be used provided the color is not affected and the coating compound is treated with solubilized copper 8 quinolinolate which is listed as inhibitor (e) in Federal Standard CCC-D-950. The amount of fungicide shall be based on the nonvolatile content of the coating. The coating compound shall be chemically analyzed for copper 8 quinolinolate content in accordance with Federal Standard CCC-D-950. 6.1.3 Color—The maximum and minimum shades limits shall be defined by color designations listed in Federal Stan- dard 595A as agreed upon between the purchaser and supplier. The color designated grey shall fall between No. 36492 and No. 36173 as listed in Federal Standard 595A.6.1.4 Selvage—Vinyl-coated glass insect screening and lou- ver cloth may be supplied with or without selvages as agreed between the purchaser and supplier. 6.1.5 Yarn Splices—Vinyl-coated glass yarn splices shall be permitted provided they show no tails and do not exceed 25 mm [1 in.] in length. Yarn splices in the insect screening or louver cloth shall not exceed 15 per standard 30 m [100 ft] roll, and no more than one splice shall occur in any 930 cm 2 [1 ft 2 ] of product. 6.2 Put-Up—Vinyl-coated glass yarn insect screening and louver cloth shall be put-up on rolls that may be placed in containers whose dimensions shall be agreed upon between the purchaser and the supplier.

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