1、MIL-C-43892A SUPERSEDING MIL-C-43892 1 May 1974 21 December 1984 MILITARY SPECIFICATION * CLOTH, WILL: COTTON AND NYLON, WATER REPELLENT TREATED This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This document covers one type of c
2、otton and nylon blend twill cloth. 2. APPLICABLE DOCUMENTS * 2.1 Government documents. Unless otherwise specified, the following docu- ments of the issue in effect on date of invitation for bids or request for proposal, form a part of this document to the extent specified herein. SPECIFICATIONS FEDE
3、RAL PPP-P-1134 - Packaging of Cotton and Cotton-Synthetic Fiber Blend Fabrics (Excluding Duck Fabrics) MILITARY MIL-T-43548 - Thread, Polyester, Cotton-Covered and Rayon-Covered Beneficial comments (recommendations , additions, deletions) and any pertinent data which may be of use in improving this
4、document should be addressed to: U.S. Army Natick Research and Development Center, Natick, MA 01760-5014 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this docu- ment or by letter. FSC 8305 THIS DOCUMENT CONTAINS /I PAGES Provided by
5、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-43892A STANDARDS FEDERAL FED-STD-4 - Glossary of Fabric Imperfections FED-STD-191 - Textile Test Methods MIL I TARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes (Copies of docume
6、nts required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) OTHER GOVERNMENT DOCUMENTS Laws and Regulations Rules and Regulations Under the Textile Fiber Products Identification Act (Copi
7、es may be obtained without charge from the Federal Trade Commission, Washington, DC 20580.) .k 2.2 Other publicatisns. Unless otherwise specified, the following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this document to the extent specifi
8、ed herein. AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND COLORISTS (AATCC) Chromatic Transference Scale (Copies may be obtained from the American Association of Textile Chemists and Colorists, P.O. Box 12215, Research Triangle Park, NC 27709.) (Technical society and technical asso.ciation documents a
9、re generally available for reference from libraries. and using Federal agencies. ) They are also distributed among technical groups .jc 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 shall take precede
10、nce, 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-43892A 3. REQUIREMENTS 3.1 Standard sample. The dyed and finished cloth shall match the standard sample for shade and appearance and shall be equal to or better than the standard sample wit
11、h respect to all characteristics for which the standard sample is referenced (see 6.3). 3.2 Material. 3.2.1 Cotton. The cotton shall be carded and drawn. 3.2.2 Nylon. The nylon shall be first quality, high tenacity, semi-dull staple having a nominal cut length of 1-1/2 inches and a round cross-secti
12、on with a nominal denier of 2.25 to 2.50. 3.2.3 Yarns. The yarns shall be a blend of 50 percent cotton and 50 percent nylon drawn and spun into singles yarn for both the warp and filling, when tested as specified in 4.2.3. desized specimen. minus 5.0 percent cotton. Percentages are based on the dry
13、weight of the Tolerances will be limited to plus 5.0 percent nylon and 3.3 Color. The color of the dyed and finished cloth shall be Olive Green 107 and shall match the standard sample (see 6.3 and 6.5). compounds containing elementary sulfur capable of oxidation to sulfuric acid is prohibited. shall
14、 contain no more labile sulfur than shown by the standard sample when tested as specified in 4.2.3. When a standard sample is not available, the dyed cloth shall show no more than -a slight trace of labile sulfur as defined in the test method when tested as specified in 4.2.3. The use of dyes and Th
15、e dyestuff shall be chosen and applied so that the dyed cloth * 3.3.1 Matching. The color of the dyed and finished cloth shall match the standard sample under artificial daylight having a correlated color temperature of 7000 + 500 K and shall be a good approximation to the standard sample under inca
16、ndescent lamplight at 2850 2 100 K. * 3.3.2 Colorfastness. The dyed and finished cloth shall show fastness to laundering (after three cycles), light and crocking equal to or better than the standard sample when tested as specified in 4.2.3. When a standard sample is not available, the dyed and finis
17、hed clpth shall show “good“ fastness to laundering (after 3 cycles), perspiration, and light after 80 Standard Fading Hours; and shall show an AATCC Chromatic Transference Scale rating for crocking not lower than 3.5 when tested as specified in 4.2.3. 3.4 Physical requirements. The physical requirem
18、ents of the dyed and finished cloth shall be as specified in table I when tested as specified in 4.2.3. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- -. - -il_- _-_- MIL-C-4372A 83 W 77777Ob 03b783 3 =I MIL-C-43892A TABLE I. Physical requirement
19、s Weight Yarns per inch Breaking strength Air permeabilit (max. 1 5 minimum lbs., minimum oz. /sq . yd . min, max, Warp Filling Warp Filling CU. ft./min./ft 4.8 5.3 94 46 155 65 75,O 3.4.1 Weave. The weave shall be a 2 right hand twill. I 9 3.4.2 Width, The width of the cloth shall be as specified (
20、see 6,2).and shall be the minimum acceptable width inclusive of selvages when fly shuttle looms are used, and exclusive of selvages and fringes when shuttleless looms are used, 3.5 Finish, The cloth shall be mercerized, dyed, and closely singed, 3.5.1 Nonfibrous material. Prior to the application of
21、 the water-repellent treatment, the starch and protein content, including chloroform-soluble and water-soluble material of the cloth shall not exceed 2.0 percent when tested as specified in 4.2.3. 3.6 pH. The pH value of the water extract of the finished cloth shall be no less than 5.0 nor more than
22、 8.5 when tested as specified in 4.2.3. * 3.7 Water-repellent treatment, The cloth shall be given an approved water- repellent treatment (see 6.6) and shall conform to the requirements of 3.7.1. The water-repellent shall consist of aluminum salts of saturated carboxylic acids (such as formate, aceta
23、te, palmitate or stearate) mixed with refined mineral vegetable waxes. The product shall be applied either in the form of an aqueous emulsion or in the form of water-free solvent solution. 3.7.1 Spray rating. The results of the three individual determinations on the sample unit for spray rating shal
24、l be equal to or better than 90, 90, 80 when tested as specified in 4.2.3, 3.8 Dimensional stability. The cloth shall not shrink nor elongate more than 2.0 percent in either the warp or the filling direction when tested as specified in 4.2.3, trademark, either on the cloth, ticket or package. The pr
25、eshrinking process used shall not be identified by.name or .- a a 3.9 Seam efficiency. The finished cloth shall have a seam efficiency of not less than 80 percent when tested as specified in 4.2.3. 4 r- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
26、-MIL-C-43892A * 3.10 Length and put-uE, Unless otherwise specified (see 6.21, the finished cloth shall be furnished in continuous lengths each not less than 40 yards. The cloth shall be put-up in full width rolls as specified in 5.1. J: 3,11 Fiber identification. Each roll of cloth shall be labeled
27、or ticketed for fiber content in accordance with the Rules and Regulations Under the Textile Fiber Products Identification Act. * 3.12 Workmanshie. The finished cloth shall conform to the quality of product established by this document. The demerit points per 100 square yards when calculated as spec
28、ified in section 4 shall not exceed the applicable established maximum point values. 4. QALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as spe
29、cified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any
30、of the inspections set forth in the document where such Lsipections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Certificate of compliance, Where certificates of compliance are sub- mitted, the Government reserves the right to check test such items t
31、o determine the validity of the certification. 4.2 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with MIL-STD-105. * 4.2.1 Component and material inspection. In accordance with 4.1, components and materials shall be inspected in
32、accordance with all the requirements of referenced documents unless otherwise excluded, amended, modified, or qualified in this document or applicable purchase document. * 4.2.2 End item examination. 4i2.2.1 Yard-by-yard examination. Each roll in the sample shall be examined on the face side only (t
33、will weave going to the right). 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. All defects as defined in Section I of FED-STD-4, which are clearly
34、noticeable at normal inspection distance (3 feet) shall be scored and assigned demerit points as listed in 4.2.2.1.1, except that only those slubs and 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4392A 3 U 9393906 037b75 7 a MIL-C-43892A k
35、nots which exceed the limits shown on Sears Fabric Defect Scales (see 6.7), “FI for slubs and “E“ for knots, shall be scored. yard on the measuring device of the inspection machine) from any one roll within the sample shall be penalized more than four points. 20 rolls selected from 20 containers. Th
36、e lot shall be unacceptable if the points per 100 square yards of the total yardage examined exceeds 30 points. The lot shall be unacceptable if the points per 100 square yards of two or more individual rolls exceeds 45 points. square yards, a second sample of 20 rolls shall be examined only for ind
37、ividual roll quality. The lot shall be unacceptable if one or more rolls in the second sample exceeds 45 points per 106 square yards. quality and individual roll quality shall be as follows: No linear yard (increments of 1 The sample size shall be If one roll exceeds 45 points per 100 Point computat
38、ion for lot Total points scored in sample x 3600 Contracted width of cloth (inches) x Total yrds inspected 4.2.2.1.1 Demerit points, Demerit points shall be assigned as follows: = Points per 100 square yards For defects up to and including 3 inches in For defects exceeding 3 inches, but not For defe
39、cts exceeding 6 inches but not For defects exceeding 9 inches in any any dimension - one point exceeding 6 inches in any dimension - two points exceeding 9 inches in any dimension - three points dimens ion - four points a The following defects, when present, shall be scored four points for each yard
40、 in which they occur: Baggy, ridgy, or wavy cloth Width less than specified Uneven weaving Poor dye penetration, mottled, streaky or cloudy Not closely singed 4.2.2.2 Length examination. 4.2.,2.2,1 Individual rolls, During the yard-by-yard examination, each roll in the sample shall be examined for l
41、ength, 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 if two or more rolls in the sample are defective in respect to 6 Provided by IHSNot for Resa
42、leNo reproduction or networking permitted without license from IHS-,-,-MIL-C-43892A 4.2.2.2.2 Total yardage in sample. .The lot shall be unacceptable if the total of the actual lengths of rolls in the sample is less than the total of the lengths marked on the tickets. * 4.2.2.3 Shade and appearance
43、examination, During the yard-by-yard examination, each roll in the sample shall be examined for shade and appearance. - If any roll-in the sample is off shade; shaded side to side, side to center, or end to end; or does not have the same appearance as the standard sample, the lot represented by the
44、sample shall be rejected. * 4.2.2.4 Roll identification examination. During the yard-by-yard examina- tion, each roll in the sample shall be examined-for proper identification. The lot shall be unacceptable if two or mare rolls in the sample are not labeled or ticketed in accordance with the Textile
45、 Fiber Products Identification Act. 4.2.3 End item testing. The cloth shall be tested for the characteristics listed in table II. Methods of testing specified in FED-STD-191 wherever applicable and as listed in table II shall be followed, The physical and chemical values specified in Section 3 apply
46、 to the results of the determina- tions made on the sample unit for test purposes as specified in the applicable test method. The sample unit shall be 5 continuous yards full width of the finished cloth and 1/4 yard of the cloth prior to the application of the water- repellent treatment. The lot sha
47、ll be unacceptable if one or more sample units fail to meet any test requirement specified. dance with the following: The sample size shall be in accor- Lot size (yards) 800 or less 801 up to and including 22,000 22,001 and over Sample size (number of sample units) 2 3 5 7 Provided by IHSNot for Res
48、aleNo reproduction or networking permitted without license from IHS-,-,- - I I- MIL-C-LI3872A 83 3777706 0376787 O W MIL-C-43892A TABLE II. End item tests Requirement Test Characteristic paragraph method Cotton identification Nylon : Identification Lus ter Denier Nylon percent Cotton percent Presenc
49、e of labile sulfur Colorfastness to: Laundering (after 3 cycles) Perspiration Light Crocking Fiber content: Weight Yarns per inch Breaking strength Air permeability Weave Finish: Mercerized Singed Nonfibrous material PH Water repellency, spray rating Dimensional stability Seam efficiency 3.2.1 3.2.2 3.2.2 3.2.2 3.2.3 3.2.3 3.3. 3.3.2 3.3.2 3.3.2 3.3.2 3.4 3.4 3.4 3.4 3.4.1 3.5 3.5 3.5.1 3.6 3.7.1 3.8 3.9 - 1/ i/ i/ i/ - 2530 2
