1、MIL-C-70991A D 9999906 1979157 931 D INCH-POUND Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this documenl should be addressed to: Commander U.S. ARMY ARDEC, ATTN.: SMCAR-BAC-S, Picaiinny Arsenal, New Jersey, 07806-5000 by using
2、the seif-addressed Standardization Document Improvement MIL-C-7099 1 A (AR) O1 December 1993 SUPERSEDING 18 January 199 1 MIL-C-7099 1 (AR) MILITARY SPECIFICATION CLOTH, COATED, KEVLAR-29, POLYURETHANE COATED This specification is approved for use by the US Army Armament, Munitions and Chemical Comm
3、and, and is available for use by all Departments and Agencies of the Department of Defense I. SCOPE 1.1 Scope. This specification covers the requirements, examinations, and tests for polyurethane coated Kevlar-29 cloth. The coated cloth is used in the fabrication of the Ram Air Decelerator (RAD) of
4、the M73M75 grenade in the M261/M267 Hydra 70 submunition warhead (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents 2. I. 1 Specifications. standards. and handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless oth
5、erwise 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- 1 1 36 MILITARY - Packaging and Packing of Coated
6、(Plastic, Rubber) and Laminated Fabrics AMSMC NIA FSC 1330 DISTRiBUTION STATEMENT A. Approved for public release; distribution statement is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-7099A 999990b 1979158 878 W . MIL-C-70991A (A
7、R) MIL-A-48078 - Ammunition, Standard Quality Assurance Provisions, General Specifications for MIL-W-63 I50 - Weapons and Support Materiel Standard Quality Assurance Provisions for STANDARDS FEDERAL FED-STD- 19 1 - Textile Test Methods FED-STD-595 - Colors MILITARY MIL-STD- 109 - Quality Assurance T
8、erms and Definitions MIL-STD- 1487 - Glossary of Cloth Coating Imperfections (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the DODSSP - Customer Service, Standardization Documents Order Desk, 700 Robbins Avenue, Bldg. 4D, Phil
9、adelphia, PA 191 11-5094.) 2.1.2 Other Government documents. drawinns and Dublications. The following other Government documents, drawings and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWING
10、S (SEE 6.5) U.S. ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER (ARDEC) PRODUCT AND PACKAGING 9345 172 9347191 129381 30 - Fabric - Urethane - Coated Cloth (Copies of Government documents, drawings and publications required by contractors in connection with specific acquisition nctions s
11、hould be obtained fi-om the contracting activity or as directed by the contracting activity.) RULES AND REGULATIONS 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70991A = 9999906 1979159 704 = MIL-C-70991A (AR) FEDERAL TRADE COMMISSION Rule
12、s and Regulations Under the Textile Fiber Products Identification Act (Application for copies should be addressed to the Federal Trade Commission, Washington, D.C., 20580.) 2.2 Non-Government publications. The following document forms a part of this document to the extent specified herein. Unless ot
13、herwise specified, the issues of the document which are DoD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIET
14、Y FOR TESTING AND MATERIALS (ASTM) D226 1 - Tearing Strength of Woven Fabrics by the Tongue Method (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadephia, PA 19103-1 187.) 2.3 Order of Drecedence. In the event of a conflict betwee
15、n the text of this specification and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless specific exemption has been obtained. 3. REQUIREMENTS 3.1 Materials. 3.1 . 1 Base cloth. The base cloth m
16、aterial shall meet all the requirements specified on drawing 93451 72. 3.1.1.1 Yarn size. The base cloth shall have a yarn size of 200 denier 3.1.1.2 Twist. The base cloth yarn shall have a 3.2 0.5 Z twist in the warp and fill direction. 3.1.2 Urethane. The urethane shall meet all the requirements o
17、f drawing 9347191 3.1.2.1 Coatina comiiosition. The coating composition shall be a thermosetting (crosslinked) polyether polyurethane coating or a cross-linkable base (tie) coat with a non- blocking PolyTetraMethyleneEtherGlycol (PTMEG) type top coat (see 6.6). 3.2. Phvsical Characteristics 3 Provid
18、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-C-7099LA m 9999906 1979160 426 m M IL-C-7099 1 A (AR) 3.2. I Base cloth. 3.2.1.1 Weight. The base cloth shall weigh 1.93 to 2.3 1 oz/yd2 3.2.1.2 Thickness. The base cloth shall have a thickness of 0.007
19、inches maximurn for the sample unit 3.2.1.3 Breaking strenflh. The base cloth shall have a breaking strength of 275 pounds minimum in both the warp and fill direction. 3.2.1.4 Yarn count. The yarn count in the warp and fill direction shall be 40 _+ 2 per inch. 3.2.1.5 Weave. The base cloth shall hav
20、e a plain weave. 3.2.2 Coated cloth. 3.2.2. I Coating weight. Coating shall be applied to both sides of fabric. Coating weight applied to side 1 (first side coated) shall be 1 .O 2 .2 oz/yd2. 3.2.2.2 Weight. The coated cloth shall weigh 3.4 to 4.1 oz/yd2 3.2.2.3 Thickness. The coated cloth shall be
21、a maximum of 0.008 inches thick. 3.2.2.4 Breakins strength. The breaking strength ofthe coated cloth shall be a minimum of 275 pounds in both the warp and fill direction. 3.2.2.5 Tear strength. The tear strength of the coated cloth shall be a minimum of 35 pounds in both the warp and fill directions
22、. 3.2.2.6 Burst strength. The coated cloth shall have a minimum burst strength of 650 pounds. 3.2.2.7 Cloth stiffness. The flex-stiffness of the coated cloth shall be 7.8 inches maximum in the warp direction and 6.4 inches maximum in the fill direction at 700 F and 8.9 inches maximum in the warp dir
23、ection and 7.0 inches maximum in the fill direction at -550 F. 3.2.2.8 Hydrostatic resistance. The hydrostatic resistance of the coated cloth shall be a minimum of 480 pounds per square inch. 3.2.2.9 Blocking. The coated cloth shall exhibit little evidence of blocking; number of condition 3 not to e
24、xceed 27% and no condition 4, when subjected to the high temperature blocking test. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70991A = 9999906 3779361 362 MIL-C-70991A (AR) 3.2.2.10 Adhesion. The urethane coating shall adhere to the bas
25、e cloth with a minimum of 9.8 pounds per inch. 3.2.2.11 Color. The color of the coated cloth shall be yellow. Numbers 13655, 23655 and 33655 of FED-STD-595 are representative of desired colors. 3.2.2.12 Length and Dut-UD. Unless otherwise specified, the coated cloth shall be put-up on rolls as speci
26、fied in PPP-P-1136. The length of the roll shall be as specified (see 6.2). 3.2.2.13 Width. The minimum width of the coated cloth shall be as specified (see 6.2). 3.2.2.14 Fabric identification. Each roll shall be labeled, tagged or invoiced for fiber content in accordance with the Textile Fiber Pro
27、ducts Identification Act as amended. 3.2.2.15 Workmanship. The finished coated cloth shall conform to the quality of product established by this specification and free of the defects as follows: a. Any cut, hole, tear or any coated surface scratch or abrasion that results in baring the base fabric.
28、b Any delamination of coating. c. Foreign matter embedded in coating. d. Crease or wrinkle resulting in doubling or adhesion of surfaces that cannot be corrected by manual pressure. e. Coating cracked or checked f. Coating not applied over full width of base cloth (excluding selvage). g. Any light a
29、rea over O. 125 inch in diameter h. Any tackiness i. Any lump over O. 125 inch in diameter j. Any ripple, waviness, or dimensional distortion that cannot be corrected by manual pressure. k. Any evidence of uncleanness 3.3 First article inspection. When specified in the contract or purchase order (se
30、e 6.2), a sample shall be subjected to first article inspection in accordance with the technical provisions herein (see 4.3). 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-70991A M 9999906 1979162 2T9 MXL-C-70991A (AR) 4. QUALITY ASSURANCE
31、PROVISIONS 4.1 Responsibilitv for inspection Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of ali inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, t
32、he contractor may utilize 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 of the inspections set forth in the specification where such inspections are
33、deemed necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. Ail 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 inspection system or qual
34、ity 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 the requirements of the contract. Sampling inspection, as part of m
35、anufacturing operations, is an 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 acceptance of any defective material. 4.1.2 General provisions. Unles
36、s otherwise specified herein, the provisions of MIL-A- 48078 apply and form a part of this specification. Reference shall be made to MIL-STD-109 to define quality assurance terms used herein. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a
37、. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 First article inspection. 4.3.1 Submission. The contractor shall submit a first article as designated by the Contracting Officer for evaluation in accordance with provisions of 4.3.2. The lot to be produced for pu
38、lling first article sampling shall be a minimum of 100 linear yards. The first article sample shall be selected equally distributed from the beginning, center and end for coated cloth; and beginning and end for base cloth. Except for blocking tests, each sample unit shall consist of 5 specimens and
39、the result shall be the average of the 5 specimens. For the blocking tests, each specimen shall be treated as a sample unit. Approximate quantities indicated below may be used for the performance of the first article test. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted withou
40、t license from IHS-,-,-MIL-C-7099IIA 9999906 l197IIb3 II35 M MILC-70991A (AR) Part Description uantity Base Cloth Coated Cloth 5 Square Yards 25 Square Yards 4.3.2 InsDections to be Derformed. As determined by the Government, the first article assemblies, components, and test specimens may be subjec
41、ted to any or all of the examinations and tests specified in this detail specification (see TABLE I) and be inspected for compliance with any or all requirements of the applicable drawings. 4.3.3 Rejection. If any sample unit fails to comply with any of the applicable requirements, the first article
42、 sample shall be rejected. The Government reserves the right to terminate inspection upon any failure of any sample unit to comply with any of the requirements. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-7099LA c 3 L 8 i ! ! - Provided b
43、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-70993A M 9999906 3979365 TO8 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I o - U U rj c Y m 2 .M 3 cil- - L z 10 Provided by IHSNot for ResaleNo repro
44、duction or networking permitted without license from IHS-,-,-MIL-C-70993A m 9999906 3979367 880 m MIL-C-70991 (AR) 4.4 uality conformance inspection. 4.4.1 Inspection lot formation. Inspection lots shall consist of up to 1,000 linear yards of material, with overage allowable of 300 linear yards. A s
45、pecimen is sufficient quantity of cloth required to conduct a particular test. The average of the required number of specimens, defined in FED-STD-191, shall constitute one sample. Unless otherwise specified this shall be 5 specimens. The result of a sample is the average of a required number of spe
46、cimens. The required number of samples is defined in the Classification of Characteristics herein. Samples for the base cloth shall be equally taken from the beginning and end of the inspection lot or at the 500 linear yard intervals for a minimum or two (2) samples per inspection lot. Samples for f
47、irst side coating weight shall be taken from the beginning and end of the inspection lot. Samples for coated cloth shall be equally taken from the beginning, center and end of the inspection lot. 4.4.2 Examinations and tests. a. Classification of Characteristics. Quality conformance examinations and
48、 tests are specified in the following Classification of Characteristics paragraphs. The contractors quality assurance program or detailed inspection system shall provide assurance of compliance of ail characteristics with the applicable drawing and specification requirements utilizing, as a minimum,
49、 the conformance criteria specified. b. Conformance criteria. The accepdreject criteria corresponding to the number of samples (called out under the conformance criteria) in the Classification of Characteristics paragraphs shall be accept on zero and reject on one defect for ail examinations and tests except were notes apply. c. Alternative inspection provisions. Unless other
