1、MIL-C-2q939 3 7797906 035026 7 1 t I i c k Y a H-3b “ 86 MIL-C-24939 f?i!) p:2 “b. . “ MILITARY SPECIFICATION CLOTH, RIPSTOP, PARA-ARAMID/PBI, WATER REPELLENT This specification is approved for use by all Departments and Agencies of the Depaftment of Defense. 1. SCOPE -* 1.1 Scope. This specificatio
2、n covers the requirements for a plain 2 x 2 ripstop, 60% para-aramid and 40% PBI, cloth that is water repellent treated. d- 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this spe
3、cification to the extent specified 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. SPECIFICATIONS Y FEDERAL PPP-P-1133 -
4、 Packaging of Sythetic Fiber Fabrics MILITARY MIL-T-43548 - Thread, Polyester Core: Cotton-, Rayon-, or Polyester Covered 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
5、Clothing and Textile Research Facility, 21 Strathmore Road, Natick, MA 01760-2490 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or -by letter. a AMSC N/A FSC 8305 DISTRIBUTION STATEMENT A. Approved for public unlimited.
6、 release, distribution is / . THIS DOCUMENT CONTAINS / / PAGES. -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-24939 83 9997706 0385027 7 m MIL-C-24939 STANDARDS FEDERAL FED-STD-4 . - Glossary of Fabric Imperfections (Sections 1, li, FED-ST
7、D-191 - Textile Test Methods and lii) MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring ac
8、tivity or as directed by the contracting officer . ) 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be th
9、ose in effect on the date of the solicitation. LAWS AND REGULATIONS Rules and Regulations Under the Textile Fiber Products Identification Act (Application for copies should be addressed to the Federal Trade Commission, D Washington, DC 20580.) 2.2 Other publications. The following document(s) form a
10、 part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted shall be those listed in the issue of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS shall
11、 be the issue of the nongovernment documents which is current on the date of the solicitation. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-24737 83 7999706 0385028 O O a o d MIL-C-24939 TECHNICAL MANUAL OF THE AMERICAN ASSOCIATION OF TEXT
12、ILE CHEMISTS AND COLORISTS Test Method 135 - Dimensional Changes in Automatic Home Laundering of Durable Press Woven or Knit Fabric (Application for copies should be addressed to the AATCC National Headquarters, P.O. Box 12215, Research Triangle Park, NC 27709.) (Technical society and technical asso
13、ciation documents are generally available for reference from libraries. They are also distributed among technical groups and using Federal agencies.) 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specifica
14、tion shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained, 3. REQUIREMENTS 3.1 Standard sample. When a standard sample is available, the finished cloth shall be equal to or better than the standar
15、d sample with respect to all characteristics for which the standard sample is referenced (see 6.3). 3.2 First article. When specified, the contractor shall furnish sample unit(s) for first article inspection and approval (see 4.3 and 62). 3,3 Material. 3.3.1 Fiber. The fiber content shall be a 60/40
16、% blend of para-aramid and PBI (polybenzimidazole). The use of fiber other than the approved is prohibited (see 6.5). The fiber shall be tested as specified in 4.5. 3.3.2 Yarn. The yarn for the warp and filling shall be 16/2 C.C. when tested as specified in 4.5. 3.4 Color. The color shall be natural
17、. 3.5 Physical requirements. The finished cloth shall conform to the physical requirements shown in Table I when tested as specified in 4.5. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-24737 83 9477906 0385029 2 U MIL-C-24939 TABLE I. Phy
18、sical requirements Characteristics . Requirement Weight unfinished (min) finished (max) Warp Fi 11 i ng Warp Fi Ili ng Warp Fi 11 ing Yarns per inch (2.54 cm) (min) Tearing strength (Elmendorf) - lb (min) Break strength - lb (min) Dimensional stability, - 5 launderings % (max) Warp . Filling Water s
19、pray resistance - (min) Ini t ia1 After 5 launderings Water absorption resistance - % (max) Ini t ia1 After 5 launderings Non-fibrous - % (max) PH Char resistance Flame resistance - vertical Char length - inch (2.54 cm) (max) Warp Filling After flame - sec. (max) After glow - sec. (max) Flame resist
20、ance - high heat After flame -sec, % Consumption - (ma?) Air pyneabill ty - f t /min/f t2 (cm /sec/cm ) (max) 7.1 oz/ydi (240.7 g/mi) 8.1 oz/yd (274.6 g/m ) 43 31 43 (191.5 N) 43 (191.5 N) 240 (1068.0 N) 160 (712.5 N) 3 3 100 70 10 10 2 4.0 - 8.5 No char No discoloration 1.0 1.0 o. o 25.0 0.0 10.0 4
21、0 (20.3) 4. I . _ I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I I i I I I 1 I I I MIL-C-24739 83 7777706 0385030 7 MIL-C-24939 3.6 Weave. The weave shall be a plain 2 x 2 ripstop pattern with every 10th and 11th warp end weaving together and ev
22、ery 8th and 9th filling end weaving together. 3.7 Width. The width of the finished cloth shall be as specified (see 6.2) and shall be the minimum acceptable width, inclusive of selvages when fly shuttle looms or shuttleless with tuck-in selvage looms are used. For all other shuttleless looms the wid
23、th measurement shall be made between the last warp yarn on each side excluding the protruding fringe. The weave shall be tested as specified in 4.5. 3.8 Finish. The cloth shall given an approved water repellent treatment (see 4.5 and 6.6). 3.8.1 Nonfibrous material. Prior to the application of the w
24、ater repellent treatment, the cloth shall contain no more than 2 percent starch and protein content including chloroform-soluble and water-soluble material, when tested as specified in 4.5. than 85 percent when tested as specified in 4.5. 3.9 Seam efficiency. The cloth shall have a seam efficiency o
25、f not less 3,lO Length and put-up. Unless otherwise specified (see 6.2)? the finished cloth shall be furnished in continuous lengths, each not less than 40 yards (36.4 m). Each length shall be put-up on full width rolls as specified in PPP-P-1133. 3.11 Fiber identification, Each piece shall be label
26、ed, or ticketed for fiber content in accordance with the Rules and Regulations Under the Textile Fiber Products Identification Act (see 2.1.2). 3.12 Face identification. The face side of the cloth shall be identified by stamping on that side with the word llFacell at each end of the roll. 3.13 Workm
27、anship. The finished cloth shall conform to the quality established by this document. The occurrence of defects shall not exceed the applicable point level specified (see 4.4.2.1 and 4.4.2.1.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-
28、24737 3 777770b 0385033 Il W, MIL-(3-24939 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contrac
29、t or order, the contractor may use his own or any other facilities suitable for performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections
30、 are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or
31、quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling in quality conformance d
32、oes not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. 4.1.2 Certificate of compliance. Where certificates of compliance are submitted, the Government reserves the right to check test such items to
33、determine the validity of the certification. 4.2 Classification of inspection. The inspection requirements specified herein are classified as follows: 1. First article inspection (see 4.3). 2. Quality conformance inspection (see 4.4). 4.3 First article inspection. When required (see 3.2 and 6.2), th
34、e first article shall be visually examined for appearance, color and finish, and shall be tested for physical and chemical properties in accordance with methods specified in 4.5. 4.4 Quality conformance inspection. Sampling for inspection shall be performed in accordance with MIL-STD-105, except whe
35、re otherwise indicated. 4.4.1 Component and material 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 spe
36、cification or applicable procurement documents. 4.4.2 Examination of the end item. Examination of the end item shall be in accordance with 4.4.2.1 through 4.4.2.3. O . I I l I I I I I I 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-VIL-C-2973.7 3
37、 977706 0385032 2 9 MIL-C-24939 4.4.2.1 Yard-by-yard examination. The required yardage of each roll in the sample shall be examined on the face side only. When the total yardage in the roll does not exceed 100 yards (91.4m), the entire yardage in the roll shall be examined. When the total yardage in
38、 the roll exceeds 100 yards (91.4m), only 100 yards (91.4m) shall be examined. All defects as defined in Section III of FED-STD-4, which are clearly noticeable at normal inspection distance (3 feet) (0.91m) shall be scored and assigned demerit points as listed in 4.4.2.1.1, except that only those sl
39、ubs and knots which exceed the limits shown on Sears Fabric Defect Scale (see 6.4), “F or 2“ for dubs and “DIf for knots, shall be scored. Point computation for lot quality and individual roll quality shall be as follows : Total points scored in sample X 3600 Contracted width of cloth (inches) X tot
40、al yards inspected = Points per 100 square yarqs (83.6 m ) 4.4.2.1.1 Demerit points. Demerit points shall be assigned as follows: For defects up to and including 3 inches For defects exceeding 3 inches but not exceeding For defects exceeding 6 inches but not exceeding For defects exceeding 9 inches
41、in any dimension - four points in any dimension 6 inches in any dimension - two points 9 inches in any dimension .- three points - one point 4.4.2.2 Examination for length. 4 in the .4,2.2.1 Individual rolls. During the yard by yard examination, each roll the sample shall be examined for length. Any
42、 length found to be less than . minimum specified, or more than two yards less than the length marked on the ticket shall be considered a defect with respect to length. The lot shall be.unacceptable if two or more rolls in the sample are defective in respect to length . 4.4.2.2.2 Total yardage in sa
43、mple. The lot shall be unacceptable if the total of the actual length of rolls in the sample is less than the total of the lengths marked on the ticket. for the examination of individual rolls. The rolls examined shall be those selected Provided by IHSNot for ResaleNo reproduction or networking perm
44、itted without license from IHS-,-,-MIL-C-Zq737 3 7777706 0385033 4 MIL-C-24939 4.4.2.3 Examination for face identification and non-conformance with the Textile Fiber Products Identification Act. During the yard by yard examination, each roll in the sample shall be examined for these defects. The lot
45、 shall be unacceptable if two or more rolls in the sample have face identification missing from either or both ends, or two or more rolls in the sample are not labeled or ticketed in accordance with the Textile Fiber Products Identification Act (see 2.1.2.). 4.4.3 Examination of packaging requiremen
46、ts. An examination shall be made in accordance with the provisions of PPP-P-1133 to determine that preservation, packaging, packing, and marking comply with section 5 requirements. 4.5 Tests. The methods of testing specified in FED-STD-191, wherever applicable, and as listed in Table II shall be fol
47、lowed. The physical and chemical values specified in section 3, except where otherwise specified, apply to the results of the determinations made on the sample unit for test purposes as specified in the applicable test method. The sample unit shall .be five continuous yards (4.55111) full width of t
48、he finished cloth, plus 1/4 yard (.23m) full width of the cloth prior to the application of the finish for determination of nonfibrous materials and 1/2 yard (.46m) of the finished cloth carefully wrapped on a tube for the air permeability test.? The lot size shall be expressed in units of one yard
49、(0.91) each. The lot shall be unacceptable if one or more sample units fail to meet any test requirements specified. All test reports shall contain the individual values utilized in expressing the final result. The sample size shall be in accordance with the following: Lot size (yards) (0.91111) Sample size (sample units) 800 or less 801 up to and including 22,000 22,001 and over a - . 2 3 5 Provided by IHSNot for ResaleNo reprodu
