1、MIL-C-2493OB 3 9999906 0503457 2 I INCH-POUNDS , MIL-C-2491OB 27 January 1992 SUPERSEDING MIL-C-2491OA 15 April 1985 MILITARY SPECIFICATION CLOTH, TROPICAL: POLYESTER AND WOOL The specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specif
2、ication covers the requirements for one type of washable polyester and wool tropical cloth. 2. APPLICABLE DOCUMENTS 2.1 Government documents. B) T. * 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a Part of this document to the extent spec
3、ified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL PPP-P-1132 - Packaging of Woolen,
4、 Worsted and Wool Blend Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed .to: Officer in Charge, Navy Clothing and Textile Research Facility, P.O. Box 59, Natick, MA 01760-0001 by using the self-addr
5、essed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or (Synthetic Fiber; Cotton) Fabrics by letter. AMSC N/A FSC 8305 DISTRIBUTION STATEMENT A. Approved for public release, distribution is un1 imi ted. Provided by IHSNot for ResaleNo reproduction
6、or networking permitted without license from IHS-,-,- MIL-C-24730B 83 W 7777706 0503458 4 H MI LI TARY MIL-C-43665 - Cloth, Wool Mothproofing Treatment of STANDAEDS FEDERAL FED-sTD-19 1 - Textile Test Methods MIL I TARY MIL-STD-655 - Provisions for Evaluating Quality of Cloth, Wool, * MIL-STD-2073-1
7、 - DOD Materials Procedures for Development and * MIL-STD-2073-2 Worsted and Wool Blends Applications of Packaging Requirements - Packaging Requirement Codes * (Unless otherwise indicated, copies of federal and military specification, standards, and handbooks are available from the Standardization D
8、ocuments Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) * 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specifie
9、d, the issues are those cited in the solicitation. RULES AND REGULATIONS UNDER THE WOOL PRODUCTS LABELING ACT OF 1939 (Application for copies should be addressed to the Federal Trade Commission, Washington, DC 20580.) METHODS OF TEST FOR GRADES OF WOOL TOP (Applications for copies should be addresse
10、d to the U.S. Department of Agriculture, Agricultural Marketing Service, Washington, DC 20402.) * 2.2 Non-Government publications. The following document(s) form a part of this specification to the extent specified herein. Unless otherwise specified, the issue of documents which are DoD adopted shal
11、l be those listed in the issue of the DODICS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODIGS are the issue of the documents cited in the solicitation (see 6.2). TECHNICAL MANUAL OF THE AMERICAN ASSOCIATION OF “EXTILE CHEMIST AMD COLORIST Method
12、 No. 8-1988 - Colorfastness to Crocking: AATCC Crockmeter Method Method No. 135-1978 - Dimensional Changes in Automatic Home Laundering of Woven and Knit Fabrics 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-249LOB 83 99999Ob 0501459 b MIL-
13、C-2491OB (Application for copies should be addressed to the AATCC National Headquarters, P.O. Box 12215, Research Triangle Park, NC 27709-2215). e AMERICAN SOCIETY FOR TESTING AND MATERIALS * D 1424-83 - Test for Tear Resistance of Woven Fabrics by Falling Pendulum . (Elmendorf) Apparatus (Applicati
14、ons for copies should be addressed to the American Society for . Testing and Materials, 1916 Race Street, Philadelphia, PA 19103-1187). (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be
15、 available in or through libraries or other informational services.) * 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and
16、regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Standard sample. The finished cloth shall match the standard sample for shade and shall be equal to or better than the standard sample with respect to all characteristics for which the standard sample is referenced (see 6
17、.3). The standard sample is identified under piece number 85084. 3.2 First article. When specified, the contractor shall furnish sample unit(s) for first article inspection and approval (see 4.3. and 6.2). 3.3 Material. 3.3.1 Stock. 3.3.1.1 Wool. The stock shall be fleece or pulled wool or both, not
18、 lower in grade th-4 U. S. Standard when tested as specified in 4.4.1.1. 3.3.1.2 Pol ester. The stock shall be semi-dull polyester fiber made from appropriate. The fiber shall be 3 denier and the minimum average fiber length shall be 3 inches when tested as specified in 4.4.1. * 3.3.2 Polyesterboo1
19、yarn. The polyester and wool fibers shall be blended and spun on the worsted system and twisted into a 2-ply yarn for both warp and filling yarns. The finished cloth shall contain 75 + 2 percent polyester and 25 + 2 percent wool, based on the weight obtained from chloroform extraction, when tested a
20、s specified in 4.6. polyethylene -47 g yco terephthalate, either homopolymer or modified polymer as 3.4 Color. Unless otherwise specified in the contract, the color of the cloth smbe shade Blue 3346 and shall match the standard sample (see 6.3). The color shall be obtained by top dyeing. 3 Provided
21、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- _ MIL-C-2493OB 83 W 9999906 0503460 2 * 3.4.1 Matchin . The finished cloth shall match the standard sample when having a correlated color temperature of 7500 + 200 K, with illumination of 100 + 20 foot candles,
22、 and shall be a good mat& to the standard sample under incandescent lamplight at 2300 - + 200 K. viewed un a-# er i tered tungsten lamps which approximate artificial daylight * 3.4.2 Colorfastness. The finished cloth shall show colorfastness to laundering (3 cycles), wet drycleaning, perspiration, l
23、ight (40 Standard Fading Hours) and crocking equal to or better than the standard sample. As a limit of acceptability, or when no standard sample is available, the finished cloth shall show a mimimum of “good“ colorfastness to laundering (3 cycles), wet drycleaning, perspiration, light (40 Standard
24、Fading Hours) and shall show a crocking rating of not lower than 3.0 for dry and a 2.5 for wet when tested as specified in 4.6. 3.5 Moth roofin . Mothproofing of the wool top shall be in accordance with MIL-C-4Mested in accordance with 4.6. * 3.6 Physical requirements. The finished cloth shall confo
25、rm to the requirements specified in Table I when tested as specified in 4.6. TABLE I. Physical requirements Weight (ounces Yarns per per yd- Breaking strength Tearing strength Shrinkage inch 56-inch (minimum) (minimum) percent (minimum) width) (pounds) (pounds 1 (maximum) Weave Warp Filling Warp Fil
26、ling Warp Filling Warp Filling 50 44 10.0 100 80 4.0 4.0 3.0 2.5 Plain +0.5 - * 3.6.1 Width. Unless otherwise specified (see 6.2), the finished cloth shall be animum of 60 inches exclusive of selvages or exclusive of tuck-in when woven on Sulzer-type looms. 3.7 Finish. The cloth shall be scoured, he
27、at set, sheared and decated so as to pme a finish equal to that of the standard sample. 3.7.1 Pillin . The finished cloth shall show no more pilling than that of The pH value of the water extract of the finished cloth shall be 3.8 Selva es. The selvages shall be no thicker than sixty-five percent mo
28、re than -+Tod t e y of the cloth when tested as specified in 4.6. the standar 4 sample when tested as specified in 4.6. . 5.5 nor more than 8.5 when tested as specified in 4.6. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2491OB 83 9999906
29、 0501461 4 MIL-C-2491OB _. 3.9 Length and put-up. Unless otherwise specified ( 6.2), the cloth shall be furnished in continuous lengths each not less t 3.10 Wool content label. Cloth manufactured under t be labeled in accordance with the Wool Products Labeling Act of 1939. , 3.11 Markin . The back o
30、f the cloth shall be marked “Back“ at both ends of each rold letters not less than 1/2 inch in height (see 4.4. marking shall be clearly legible in any indelible marking u 3.12 workmanshi . The finished cloth shall . conform to the quality establidis specification. The demerit points per 100 square
31、yards when calculated as specified in section 4, shall not exceed the established maximum point value. Each defect shall be marked with a 1-to-1 1/2 inch long string. The string shall be sewn into the selvage near the defect, A red string shall represent a three or four point defect and a white stri
32、ng shall represent a one or two point defect (see 4.4.2.5). 4. QUALITY ASSURANCE PROVISIONS * 4.1 Responsibility for inspection. Unless otherwise ied in the- contract or purchase order, the contractor is responsible f perf ormance of all inspection requirements (examination and tests) as specified h
33、erein. Except as otherwise specified in the contract or orde tractor may use his own or any other facilities suitable for perfo the inspection requirements specified herein, unless disapproved by Government. The Government reserves the right to perform any of the inspections set forth in the specifi
34、cation where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. * 4.1.1 Responsibility for compliance. All items must me all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors
35、overall inspection system or qua-lity . program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. S
36、ampling inspection as part of - manufacturing operations, is acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of nom defective material, either indicated or actual, nor does it commit the government to acceptance of defective material. submitt
37、ed, the Government reserves the right to check determine the validity of the certification. herein are classified as follows: 0 4.1.2 Certificate of compliance. Where certificates 4.2 Classification of inspection. The inspection re 1. 2. First article inspection (see 4.3). Quality conformance inspec
38、tion (see 4.4). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-C-249LOB 83 m 9999906 050L4b2 b 4.3 First article inspection. When required, the first article of finished cloth shall be visually inspected for uniformity of shade, color, finis
39、h and appearance and shall be tested for chemical and physical properties in accordance with the applicable methods specified in 4.6. 4.4 Quality conformance inspection. Sampling for inspection shall be performed in accordance with MIL-STD-6!%, except where otherwise indicated. 4.4.1 Component and m
40、aterial inspection. In accordance with 4.1 above, components and materials shall be tested in accordance with all the requirements of referenced specifications, drawings, and standards unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase document. T
41、ABLE II. Component tests _I_l_l_-_1_1_ Requirement Test Characteristics paragraph method Length of fiber 3.3.1.2 Visual i/ Denie r 3.3.1.2 4021 - l/- - i/ A certificate of compliance shall be submitted and will be acceptable for the stated requirements. The wool shall be visually examined for grade
42、in the undyed top form by comparison with the standard (see 3.3.L.l). dispute, the wool grade shall be determined by the width method (wedge). sample unit shall be 1 yard of undyed top. The sample size (number of sample units) shall be as shown in the table below. The lot size shall be expressed in
43、units of 1 pound. The results from each sample unit shall be reported separately. The lot shall be unacceptable if a single sample unit fails to meet the required grade. Polyester identification 3.3.1.2 - l/ _1_1_l_l_-_-_ 4.4.1.1 Wool. - In the event of a The Lot size (pounds) 800 or less 801 up to
44、and including 22,000 22,001 and over Sample size 2 3 5 4.4.1.2 In-process inspection. Inspection shall be made at any point or during any phase of the mariufacturing process to assure -that supplies and services conform to prescribed requirements. The Government reserves the right to exclude from co
45、nsideration for acceptance any materi.al for which the in-process inspection has indicated non-conformance. 4.4.2 Examination of the end item. Examination of the end item shall be in accordance with 4.4.2.1 through 4.4.2.4. 6 1 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
46、hout license from IHS-,-,-MIL-C-249LOB 83 I 99999Ob 05014b3 I MIL-C-2491OB 4.4.2.1 Yard-by- ard examination. The yard by yard examination shall be as specified in MIL-She total yardage in the roll does not exceed 100 yards, the entire yardage in the roll shall be examined. When the total yardage in
47、the roll exceeds 100 yards, only 100 yards shall be ex fabric quality shall be quality level 15. 4.4.2.1.1 Limit for slubs and knots. Only those knots and slubs which exceed the limits shown on Sears Fabric Defect Scales (see 6.4), 3-1/2or D for slubs and C for knots, shall be scored. 4.4.2.2 Examin
48、ation for length. Examination for length shall be as specified in MIkSTD-655. 4.4.2.3 Examination for back marking and compliance with the Wool products Labelin Act Examination kor back marking and compliance with the Wool -oF-e-Ij, Pr ucts La ling Act shall be as specified in MI1 “- p.CC. 4.4.2.4 E
49、xamination for shade and finish. 4.4.2.4.1 Individual rolls. Each roll in the lot shall be examined visually for shade match (see 3.4.1) and finish (see 3.7). A roll shall be unacceptable if it fails to meet the requirements for shade match and finish. The sample unit shall be a 4 inch by 20 inch swatch of the cloth. A sample unit shall be drawn from eac
