1、H- 3w5 MIL-C-LI3989A 3 m 7779906 0397880 b m MIL-C -4 3 9 8 9A 19 September 1986 SUPERSEDING MIL-C -4 3989 (GL ) 12 December 1978 MILITARY SPECIFICATION CLOTH, KNITTED, RASCHEL, ARAMID This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 S
2、cope. This document covers one type of rasche1 knitted aramid cloth. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 3c 2.1.1 Documents. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those lis
3、ted in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. SPECIFICATION FEDERAL PPP-P-1133 - Packaging of Synthetic Fiber Fabrics - Beneficial comments (recommendations, additions, deletions) and any pertinent data
4、 which may be of use in improving? this document should be addressed to U.S. Army Natick Research, Development, and Engineering Center, Natick, MA 01760-5014, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
5、AMSC NIA FSC 8305 a DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited /THIS DOCUMENT CONTAINS 10 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-4398 9A STANDARDS FEDERAL FED-STD-191 - Textile Test Methods
6、MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes (Copies of documents required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity. ) * 2.1.2 Other Government do
7、cuments. The following other Government documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. Rules and Regulations Under the Textile Fiber Products Identification Act (Application for c
8、opies should be addressed to the Federal Trade Commission, Washington, DC 20580.) * 2.2 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 precedence. Nothing in this document, however, shall superse
9、de applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Standard sample. The dyed and finished cloth shall be equal to or better than the standard sample with respect to all characteristics for which the standard sample is referenced (see 6.3). 3.2 Mater
10、ial. + 3.2.1 Yarn. The yarn shall bemultifilament aramid (see 6.5). The yarn shall not char at a temperature less than 675“F, when tested as specified in 4-2.3. 3.3 Color. The color of the finished cloth shall be Olive Green 106. The color shall be obtained by the use of dry spun solution-dyed fiber
11、s. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-43787A 83 7777706 0397882 T MIL4 -4 3 9 8 9A W 3.3.1 Matching. The color of the finished cloth shall match the standard sample when viewed under filtered tungsten lamps that approximate artif
12、icial daylight and that have a correlated color temperature of 7000 f 500 K with illumination of 100 f 20 foot candles. The color shall be a good approximation to the standard sample under incandescent lamplight at 2300 A- 100 K. SE 3.3.2 Colorfastness. The finished cloth shall show fastness to ligh
13、t equal to or better than the standard sample or equal to or better than a rating of “fair“ after 6 standard fading hours, when tested as specified in 4.2.3. The finished cloth shall show fastness to laundering equal to or better than the standard sample or equal to or better than a rating of “good“
14、 when tested as specified in 4.2.3. w 3.4 Physical requirements. The finished cloth shall conform to the requirements specified in table I when tested as specified in 4.2.3. TABLE I. Physical requirements Characteristic Requirement Weight per sq yd, ounces Meshes per sq inch Breaking strength, pound
15、s Wales Courses of force, minimum Ultimate elongation, percent, maximum Wales Courses Flame resistance: Flaming time, seconds, maximum Wales Courses Wales Courses Wales Courses Glow time, seconds, maximum Char length, inches, maximum 7.0 minimum to 10.0 maximum 50 minimum to 59 maximum 200 115 95 12
16、 5 2.0 2.0 25.0 25. O 3.5 3.5 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LI3487A 83 7777706 0377883 L - MILle size Lot size (yards) Sample size Acceptance (rolls) number up to 1,200 Y 1,201 up to and including 3,200 3,201 up to and inclu
17、ding 10,000 10,001 up to and including 35,000 35,001 up to and including 150,000 150,001 and over 3 5 8 13 20 32 1! If a lot contains fewer than three rolls, each roll in the lot shall be examined. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
18、L-C-43787A 83 W 7797706 0377886 - 7 W - MIL-C-4 39 8 9A 4.2.2.2 Overall examination. The cloth shall be examined for the defects listed below. Each defect listed shall be counted not more than once in each roll examined. indicated in table III. Each roll in the sample shall be examined over its enti
19、re length. The lot shall be rejected if the total number of defects in the sample exceeds the acceptance number specified in table III. The sample size shall be the applicable number of rolls Defects Width less than specified Overall uncleanness Off shade or shaded end to end, side to side, Not labe
20、led in accordance with the Textile side to center, or throughout the roll Fiber Products Identification Act 4.2.2.3 Length examination. Each roll of cloth used in the yard-by-yard examination shall be examined for the defects listed below. If the total number of defects in the sample rolls exceeds t
21、he applicable acceptance number specified in table III or if the total of the actual lengths of the sample rolls is less than the total of the lengths marked on the roll tickets, the lot shall be rejected. Defects Any gross length less than the specified minimum length. Any gross length more than 2
22、yards less than gross length marked on roll ticket. 4.2.3 End item testing. The cloth shall be tested for the characteristics listed in table IV. The methods of testing specified in FED-STD-191, wherever applicable, and as listed in table IV, shall be followed. The physical and chemical values speci
23、fied in section 3 apply to the average of the determinations made on a sample unit for test purposes as specified in the applicable test method. The sample unit shall be 2 continuous yards full width of the finished cloth. any test requirement specified. The sample size shall be in accordance with t
24、he following : The lot shall be unacceptable if one or more sample units fail-to meet Lot size (yards) 800 or less 801 up to and including 22,000 22,001 and up Sample size (No. of sample units) 2 3 5 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
25、MIL-C-43989A TABLE IV. End item tests Characteristic Requirement paragraph Test method Yarn: Multifilament Ident if ica t ion No charring Light Laundering Colorfastness to : Weight Meshes per sq in Breaking strength Ultimate elongation: Wales Courses . Flame resistance Type of knit Nonf ibrous mater
26、ial Curling PH 3.3.2 3.3.2 3.4 3.4 3.4 3.4 3.4 3.4 3.4.1 3.6 3.7 3.8 5660 5610 5100 51 O0 5100 5903 LI 2611 281 1 4.3.1 i! Unless otherwise specified, a certificate of compliance shall be submitted 21 Five determinations per sample unit and the average reported to the nearest - whole number. and wil
27、l be acceptable for the stated requirement. 4.2.4 Packaging inspection. The inspection shall be in accordance with the quality assurance provisions of PPP-P-1133. 4.3 Methods of inspection. 4.3.1 Curling. Two specimens of cloth, 1 1/2 inches wide by 6 inches long, shall be cut, one with the long dim
28、ension parallel to the wales and the other with the long dimension parallel to the courses. be placed on a flat surface for at least 5 minutes and then visually examined for evidence of curling. Both specimens shall 8 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
29、ense from IHS-,-,-MIL-C-43787A 83 m 777770b 0377888 O M MIL -4 39 89A 5. PACKAGING 5.1 Put-up and preservation. Put-up and preservation shall be level A or Commercial as specified (see 6.2). 5.1.1 Levels A and Commercial. The cloth shall be put up and preserved in accordance with the applicable requ
30、irements of PPP-P-1133. 5.2 Packing, Packing shall be level A, B or Commercial as specified (see 6.2). 5.2.1 Levels A, B and Commercial packing. The cloth shall be packed in accordance with the applicable requirements of PPP-P-1133. 5.3 Marking. In addition to any special marking required by the con
31、tract or purchase order, shipments shall be marked in accordance with the applicable requirements of PPP-P-1133. 6. NOTES 6.1 Intended use. The cloth is intended for use in the fabrication of survival vests. 6.2 Ordering data. Acquisition documents should specify the following: a. Title, number, and
32、 date of this document. b. Width of cloth required (see 3.4.2). c. Length required if other than specified (see 3.7). d. Selection of applicable levels of preservation and packing (see 5.1 and 5.2). 6.3 Standard sample. For access to samples, address the contracting activity issuing the invitation f
33、or bids. 6.4 Heat setting. A heat setting procedure that has given satisfactory results is as follows: Autoclave with steam at 30 pounds per square inch (psi) minimum for at least 40 minutes. cloth by the application of a vacuum for a period of 5 minutes in order to adequately saturate the cloth wit
34、h steam. The steam pressure shall be held at 30 psi minimum for approximately 20 minutes after which the steam is cut off and a vacuum placed on the material for 5 minutes. reapplied for the remaining time of the autoclaving period followed by a vacuum for 5 minutes, to remove all moisture from the
35、cloth. Care must be taken to avoid the presence of creases in the cloth and roll deformation since autoclaving will permanently set the cloth. The steam shall be drawn through the The steam shall then be 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
36、,-,-I MIL-C-43989A 83 = 999970b 0377889 2 9 MIL-4 398 9A 6.5 Fiber identification. The requirements of the fabric can be met with “Nomex type 456 or 457“ Aramid fiber manufactured by E. I. DuPont de Nemours Company, Wilmington, DE. Approval of other fiber is the responsibility of the U.S. Army Natic
37、k Research, Development, and Engineering Center, Natick, MA 01760-5014, and is based on more extensive tests, including those for toxicity, which are not set forth in this document. * 6.6 Subject term (key word) listing. Rasche1 knitted aramid cloth Survival vests 6.7 Changes from previous issue. Th
38、e margins of this document are marked with an asterisk (*) to indicate where changes (additions, modifications, corrections, deletions) from the previous issue were made. This was done as a convenience only, and the Government assumes no liability whatsoever for any inaccuracies in these notations.
39、Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content, as written, irrespective of the marginal notations and relationship to the last previous issue. Custodian : Amy - GL Navy - Wu Air Force - 99 Review activities : Army - MD Air Force - 82, 11 DM - CT Preparing activity: Amy - GL Project No. 8305-0100 -_ 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
