ARMY A-A-52056-1990 TWINE FIBROUS LINEN (WAXED AND BLOCKING)《麻包线(涂蜡闭锁)》.pdf
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1、I INCH-POUND 1 A-A-5 205 6 April 9, i990 COMMERCIAL ITEM DESCRIPTION TWINE, FIBROUS, LINER, (WAXED AND BLOCKING) The General Services Administration has authorized the the use of this ommercictl Item Description in pre- ference to Types I and II of Military Specification MIL-T-2520D. 1. CLASSIFICATI
2、ON 1.1 Classification. This commercial item description covers twine of the following types as specified (see 5.2): Type I - Waxed 32-, 60-, or 120-pound breaking strength Type II - Blocking 230- or 300-pound breaking strength 1.2 Part or identifying number (PIN). of items is included in section 5.
3、A document based PIN to identify types 2. SALIENT CHARACTERISTICS 2.1 Design and construction. The twine shall be natural colored, and shall be fabricated from flax fiber processed to meet the requirements of this Commercial Item Description. The type I twine shall be waxed and mildew resistant trea
4、ted. The mildew treatment shall be applied with the wax or to the twine prior to waxing. (4-chlorophenol). surface. The mildew inhibitor shall be 1.5 + 0.5 percent of 2,2 methylene-bis The type II blocking twine shall have a hard polished The type I and type II twines shall conform to the physical r
5、equirements listed in tables I and II. -. Beneficial comments, recommendations, additions, deletions, clarifi- cations, etc. and any other data which may improve this document should be sent by letter to: Commander, U.S. Army Natick Research, Development, and Engineering Center, ATTN: STRNC-ES, Nati
6、ck, MA 01760-5014. I 1 AMSC N/A FSC 4020 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.A-A-5205b 40 m 7777774 0053687 b m A-
7、A-5 2056 TABLE I. Type I waxed twine physical requirements Length per pound Breaking strength Plies per (min.) (min. ) strand feet pounds 6 12 27 . 2235 1110 510 32 60 120 TABLE II. Type II blocking twine physical requirements No. of Plies per Length per Breaking Twine s trands strand pound (min.) s
8、trength (min.) No. (min.) (min.) feet pounds 20 4 28 4 5 7 210 150 230 300 2.2 Identification. Each package shall be labeled or ticketed for fiber content in accordance with the Textile Fiber Products Identification Act. 2.3 Put-uE. without knots or splices on 1 pound minimum net weight balls or tub
9、es. A plus or minus tolerance of 10 percent in weight will be permitted on any one holder provided that the average weight does not fall below the specified minimum. Each holder shall contain not more than three pieces, and no piece shall be less than 25 feet in length, or each holder shall contain
10、not more than two pieces with no minimum length applicable, The holders shall be wound so that each turn and layer is free from entanglement. 3. QUALITY ASSURANCE Unless otherwise specified (see 5.2), the twine shall be furnished 3.1 Certification. The contractor shall certify, and maintain substant
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