1、 INCH POUND MIL-DTL-44431B November 7, 2003 Supercedes MIL-DTL-4431A 9 October 2003 DETAIL SPECIFICATION CLOTH, PLAIN WEAVE, NYLON FILAMENT, LIGHTWEIGHT This specification is approved for use by the Natick Research, Development and Engineering Center, Department of the Army, and is available for use
2、 by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers one type of lightweight, nylon filament, and water repellent treated cloth. 2. APPLICABLE DOCUMENTS 2.1 Government Documents 2.1.1 Specifications, standards, and handbooks. The following spec
3、ifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Acquisition Streamlining and Standardization Information System (ASSIST) database and supplement thereto, c
4、ited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, Attn: DSCP-COCT, 700 Robins Ave Philade
5、lphia, PA 19111-5096 AMSC N/A FSC 8305 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-44431B SPECIFICATIONS FEDERAL A-A-50199 - Thread, Polyester Core, Cotton-
6、or Polyester-Covered STANDARDS FEDERAL FED-STD-4 - Glossary of Fabric Imperfections 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 specifi
7、ed, the issues are those cited in the solicitation. FEDERAL TRADE COMMISION RULES AND REGULATIONS UNDER THE TEXTILE FIBER PRODUCTS IDENTIFICATION ACT (Copies may be obtained without charge from the Federal Trade Commission, Pennsylvania Avenue at Sixth Street, N.W., Washington, DC 20580-0001. Websit
8、e address http:/www.ftc.gov CODE OF FEDERAL REGULATIONS 16 CFR Part 1500- Federal Hazardous Substances Act Regulations 29 CFR Part 1910- Occupational Safety and Health Standards (Applications for copies of referenced documents should be addressed to U.S. Government Printing Office, Superintendent of
9、 Documents, Mail Stop: SSOP, Washington, DC 20402-9328.) 2.2 Non-Government publications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the ASSIST d
10、atabase cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the ASSIST are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 737 - Air Permeability of Textile Fabrics ASTM D 1424 -Tear St
11、rength of Woven Fabrics by Falling-Pendulum (Elmendorf) ASTM D 1683 - Failure in Sewn Seams of Woven Fabrics ASTM D 2165 - pH of Aqueous Extracts of Wool and Similar Animal Fibers ASTM D 3775 - Fabric Count of Woven Fabric ASTM D 3776 - Mass Per Unit Area (Weight) of Fabric Option C ASTM D 5034 - Br
12、eaking Strength and Elongation of Textile Fabrics (Grab) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-44431B (Applications for copies should be addressed to American Society For Testing and Materials, 100 Barr Harbor Drive, West Conshoho
13、cken, PA 19428.) Website address: http:/www.astm.org ANSI/ASQC Z1.4 1993- Sampling Procedures and Tables for Inspection of Attributes (For all inquires please contact the American National Standards Institute, 25 West 43rdStreet, 4thFloor, New York, NY 10036). Website address: http:/www.ansi.org (No
14、n-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) AMERICAN ASSOCIATION OF TEXTILE CHEMIST AND COLORIST (AATCC) AATCC-16
15、Colorfastness to Light AATCC-22 Water Repellency: Spray Test AATCC-61 Colorfastness to Laundering, Home and Commercial: Accelerated AATCC-70 Water Repellency: Tumble Jar Dynamic Absorption Test AATCC-81 pH of the Water-Extract from Wet Processed Textiles AATCC-96 Dimensional Changes in Commercial La
16、undering of Woven and Knitted Fabrics Except Wool. AATCC-118 Oil Repellency: Hydrocarbon Resistance Test AATCC-127 Water Resistance: Hydrostatic Pressure Test (For all inquires please contact the American Association of Textile Chemist and Colorist (AATCC), P.O. Box 12215, Research Triangle Park, NC
17、 27709-2215.) Website address http:/www.aatcc.org MISCELLANEOUS Principles and Methods of Toxicology, A. Wallace Hayes (editor), 1989, pp 394-396. (Applications for copies of referenced documents should be addressed to Raven Press, 1185 Avenue of the Americas, New York, NY 10036) 2.3 Order of preced
18、ence. 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 regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First articl
19、e. When specified, (see 6.2), a sample shall be subjected to first article inspection 6.3, in accordance with 4.3. 3.2 Standard sample. The finished cloth shall match the standard sample for shade and appearance and shall be equal to or better than the standard sample with respect to all characteris
20、tics for which the standard sample is referenced (see 6.4). 3.3 Material. (see 6.5) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-44431B 3.3.1 Yarn. The yarn for the warp and filling shall be semi-dull, continuous multifilament nylon. The
21、 warp yarn shall be singles and the filling yarn shall be 3-ply, air texturized. 3.4 Color. The cloth shall be scoured white to match the standard sample (see 6.4). A fluorescent optical brightener with a resulting peak emission in the blue violet shall be used. The hue of fluorescence shall be the
22、same as that of the standard sample when tested as specified in 4.4.3. 3.4.1 Matching. The color of the finished cloth shall match the standard sample when viewed under filtered tungsten lamps that approximate artificial daylight and that have a correlated color temperature of 7500 200K, with illumi
23、nation of 100 20 foot candles and shall be a good match to the standard sample under incandescent lamplight at 2300 200 K. 3.4.2 Colorfastness. The finished cloth shall show fastness to laundering (after 3 cycles) and light (after 20 standard fading hours) equal to or better than the standard sample
24、 or equal to or better than a rating of 3-4 on the AATCC gray scale for color change for laundering and a rating of 2-3 on the AATCC gray scale for color change for light. Testing shall be specified in 4.4.3. 3.5 Physical requirements. The physical requirements for the finished cloth shall be as spe
25、cified in table I when tested as specified in 4.4.3. Table I. Physical requirements Characteristic Requirement Weight, oz./sq.yd. Breaking strength (pounds) min. Warp Filling Tearing strength (pounds) min. Warp Filling Yarn per inch, (min.) Warp Filling Air permeability, (ft.3/max/ft.2) 3.4(min)-3.9
26、(max) 200 150 5 4 148 57 16 3.5.1 Weave. The weave shall be plain. 3.5.2 Width. The width of the finished cloth shall be as specified (see 6.2) and shall be the minimum acceptable width inclusive of the selvage when fly shuttle looms or shuttleless with tuck-in selvage looms are used. For all other
27、shuttleless looms, the width measurement shall be made between the last warp yarns on each side excluding the protruding fringe(s). 3.6 Cloth preparation. The cloth shall be scoured. 3.7 Finish. The cloth shall be given a fluorocarbon type water repellent treatment. The finished cloth shall meet the
28、 requirements specified in table II when tested as specified in 4.4.3. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-44431B Table II. Water repellent requirements Hydrostatic height Dynamic absorption (centimeter) (percent) Spray rating 1
29、/ (min lot avg) min 2/ (max lot avg) max 3/ Initial 90, 90, 90 25 20 20 30 After 3 launderings 80, 80, 80 20 20 - - After 15 launderings - - - - - - - 1/ Three individual determinations shall be equal to or better than the rating specified. 2/ No individual specimen shall fall below the specified mi
30、nimum. 3/ No individual specimen shall exceed the specified maximum. 3.7.1 Resistance to organic liquid. The finished cloth shall show no wetting by n-tetradecane either initially or after 15 launderings when tested as specified in 4.4.3. 3.8 pH. The pH of the water extract of the finished cloth sha
31、ll be not less than 5.0 and not greater than 8.5 when tested as specified in 4.4.3. 3.9 Dimensional stability. The shrinkage or elongation both in the warp and filling of the finished cloth shall not be greater than 3.0 percent for the individual sample unit average when tested as specified in 4.4.3
32、. The preshrinking process shall not be identified by name or trademark either on the cloth, ticket, or package. 3.10 Seam efficiency. The finished cloth shall have a seam efficiency of not less than 60 percent minimum when tested as specified in 4.4.3. 3.11 Length and put-up. For Government procure
33、ments only, unless otherwise specified (see 6.2), the cloth shall be furnished in continuous lengths, each not less than 40 yards. Each length shall be put up on a roll as specified in 5.1. 3.12 Face identification. The face side of the cloth shall be identified by stamping the word “FACE” on that s
34、ide at each end of the roll. 3.13 Fiber identification. Each roll of the cloth shall be labeled or ticketed for fiber content in accordance with the rules and regulations under the Textile Fiber Products Identification Act. 3.14 Workmanship. The finished cloth shall conform to the quality of product
35、 established by this specification. The demerit points per 100 square yards when calculated as specified in section 4 shall not exceed the established maximum point value. 3.15 Toxicity. The finished cloth shall not present a health hazard when used as intended. (see 4.4.3.1). 5 Provided by IHSNot f
36、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-44431B 4. VERIFICATION 4.1.Verification for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspe
37、ction system or quality 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. Sampling inspecti
38、on, as part of manufacturing operations, is and acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.1.1 Certificate of comp
39、liance. When certificates of compliance are submitted, the Government reserves the right to inspect such items to determine the validity of the certification. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4
40、.3) b. Quality conformance inspection (see 4.4) 4.3 First article inspection. When a first article is required (see 3.1 and 6.2), it shall be examined for appearance, color, and finish defects and tested for the characteristics specified in table III. 4.4 Quality conformance inspection. 4.4.1 Compon
41、ent and material inspection. In accordance with 4.1, components and materials shall be inspected in accordance with all the requirements of referenced documents unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase document. 4.4.2 End item examinatio
42、n. 4.4.2.1 Yard-by-yard examination. 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, the entire yardage in the roll shall be examined. When the total yardage in the roll exceeds 100 yards, only 100 yards shall be examined
43、. All defects, as defined in section III of FED-STD-4, that are clearly noticeable at normal inspection distance (3 feet) shall be scored and assigned demerit points as listed in 4.4.2.1.1. No linear yard (increments of 1 yard on the measuring device of the inspection machine) from any one roll shal
44、l be penalized more than four points. The sample size shall be 20 rolls selected from 20 containers. The lot shall be unacceptable if the points per 100 square yards of the total yardage examined exceeds 30.0 points. The lot shall be unacceptable if the points per 100 square yards of two or more ind
45、ividual rolls exceeds 45.0 points per 100 square yard, a second sample of 20 rolls shall be examined for roll quality only. The lot shall be unacceptable if one or more rolls in the second sample exceed 45.0 points per 100 square yards. Point computation for lot quality and individual roll quality s
46、hall be as follows: Total points scored in sample x 3600 _= Points per 100 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-44431B Contracted width of cloth (inches) x Total yards inspected square yards 4.4.2.1.1 Demerit points. Demerit poin
47、ts shall be assigned as follows: For defects up to 3 inches in any dimension - one point For defects exceeding 3 inches, but not exceeding 6 inches in any dimension - two points For defects exceeding 6 inches, but not exceeding 9 inches in any dimension - three points For defects exceeding 9 inches
48、in any dimension - four points The following defects, when present, shall be scored four points for each yard in which they occur: Width less than specified Objectionable odor Overall uncleanness Uneven weaving throughout 4.4.2.2 Length examination. During the yard-by-yard examination, each roll in
49、the sample shall be examined for length. Any length found to be less than the minimum specified or more than 2 yards less than the length marked on the ticket shall be considered a defect with respect to length. The lot shall be unacceptable it two or more rolls in the sample are defective with respect to length or if the total of the actual lengths of the rolls in the sample is less t
