NAVY MIL-DTL-24671 C-2002 CLOTH LINT-FREE FLUSHING AND CLEANING《无绷带用软麻布清洁布料》.pdf

1、INCH-POUNDMIL-DTL-24671C(SH)18 March 2002SUPERSEDINGMIL-C-24671B(SH)31 July 1995MILITARY SPECIFICATIONCLOTH, LINT-FREE, FLUSHING AND CLEANINGThis specification is approved for use by the Naval Sea Systems Command,Department of the Navy, and is available for use by all Departments andAgencies of the

2、Department of Defense.1. SCOPE AND CLASSIFICATION1.1 Scope. This specification covers lint-free flushing and cleaning cloths with andwithout lanyards.1.2 Classification. The cloth shall be of the following types, grades, and classes, asspecified (see 6.2).Beneficial comments (recommendations, additi

3、ons, deletions) and anyPertinent data which may be of use in improving this document should beAddressed to: Commander, Naval Sea Systems Command, ATTN: 05Q, 1333Isaac Hull Avenue, Stop 5160, Washington Navy Yard, DC 20376-5160 by usingthe Standardization Document Improvement Proposal (DD Form 1426)

4、appearing atthe end of this document or by letter.AMSC N/A F. S. C. 8305DISTRIBUTION STATEMENT A Approved for public release; distribution unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24671C (SH)2Types.Type I - No lanyard attache

5、dType II - Lanyard attachedGrades.Grade 1 - Primarily intended for wiping inspection or flushing filter use.May also be used for cleaning.Grade 2 - For cleaning only.Classes.Class A - 20 by 20 inchesplus or minus 1 inch in each dimensionClass B - 20 by 30 inchesplus or minus 1 inch in each dimension

6、Class C - other, as specified (see 6.2)2. APPLICABLE DOCUMENTS2.1 Government documents.2.1.1 Specifications and standards. The following specifications and standards form apart of this document to the extent specified herein. Unless otherwise specified, the issues ofthese documents are those listed

7、in the issue of the Department of Defense Index ofSpecifications and Standards (DODISS) and supplement thereto, cited in the solicitation.SPECIFICATIONSFEDERALMIL-PRF-680 - Dry Cleaning and Degreasing Solvent.MILITARYMIL-D-16791 - Detergents, General Purpose (Liquid, Nonionic).STANDARDSFEDERALFED-ST

8、D-191 - Textile Test Methods.MILITARYMIL-STD-129 - Marking for Shipment and Storage.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24671C(SH)3(Unless otherwise indicated, copies of federal and military specifications, standards, andhandbooks

9、 are available from the Standardization Documents Order Desk, Bldg. 4D, 700Robbins Avenue, Philadelphia, PA 19111-5894.)2.2 Non-Government publications. The following documents form a part of this documentto the extent specified herein. Unless otherwise specified, the issues of the documents whichar

10、e DoD adopted are those listed in the issue of the DODISS cited in the solicitation. Unlessotherwise specified, the issues of the documents not listed in the DODISS are the issues of thedocuments cited in the solicitation.AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)D 1424 - Standard Test Method

11、 for Tear Resistance of WovenFabrics by Falling-Pendulum (Elmendorf) Apparatus.(DoD adopted)(Application for copies should be addressed to the American Society for Testing andMaterials, 100 Barr Harbor Drive, West Conshohocken, PA 19428.)(Non-Government standards and other publications are normally

12、available from theorganizations that prepare or distribute the documents. These documents also may beavailable in or through libraries or other informational services.)2.3 Order of precedence. In the event of a conflict between the text of this document andthe references cited herein, the text of th

13、is document takes precedence. Nothing in thisdocument, however, supersedes applicable laws and regulations unless a specific exemptionhas been obtained.3. REQUIREMENTS3.1 Material. The fabric shall be cotton.3.1.1 Yarn. The fabric yarn shall have been cleaned, carded, drawn, and spun into singleyarn

14、s for both the warp and the filling.3.1.2 Color. The fabric color shall be bleached white.3.1.3 Physical requirements. The fabric shall conform to the requirements in table I whentested as specified (see 4.2).3.1.4 Weave. For grade 1 cloth, the fabric weave shall be plain weave. For grade 2cloth, th

15、e fabric weave shall be either plain or twill weave.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24671C(SH)43.1.5 Lint and foreign material.3.1.5.1 Grade 1. The cloth shall be free from loose thread, ravelings, lint and fluff fromcloth or

16、yarn or particles of a size visible to the unaided eye. The cloth shall also be free of anyvisible foreign particulate matter, dirt or grease either embedded in the cloth or adhering thereto.3.1.5.2 Grade 2. The cloth shall be free from loose thread, ravelings, lint and fluff fromcloth or yarn or lo

17、ose particles of a size visible to the unaided eye. Each cloth may contain nomore than five specks or stains of no visible thickness, and no speck or stain may exceed 1/16inch in any dimension. Non-white threads woven into the fabric are acceptable.3.1.6 Finish. The fabric shall be free of sizing an

18、d be bleached white.TABLE I. Physical requirements.Characteristics Requirements (same for grade 1 and grade 2 unlessotherwise indicated)Minimum MaximumWeight, ounces per square yard 2.8 -Yarns, per inchGrade 1 or 2, plain weaveWarpFillingGrade 2, twill weaveWarpFilling707010050100 1/100 1/13080Break

19、ing strength, poundsWarpFilling4530-Tearing strength, grams (newtons)DryWarpFillingWet-waterWarpFilling880 (8.6)480 (4.7)1040 (10.2)720 (7.1)-1/ For Grade 1 cloth, the aggregate yarn count in both the warp and fill directions shall benot less than 150 yarns per square inch in addition to meeting the

20、 minimum yarns per inchspecified.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24671C(SH)53.1.7 Solvent compatibility. The fabric shall not discolor or show visible degradationwhen immersed in each of the following solvents for a period of

21、60 minutes at ambienttemperature:(a) Acetone(b) Isopropyl alcohol(c) Trichloroethylene(d) Dry cleaning solvent (stoddard solvent) in accordance withMIL-PRF-680(e) Nonionic detergent in accordance with MIL-D-16791 (one fluid ounce in onegallon of tap water) combined with trisodium phosphate detergent

22、 solution(approximately 23 ounces to every one gallon of total detergent solution)3.1.8 pH. The pH value of the water extract of the fabric shall be no less than 6.0 and nomore than 8.0 when tested as specified (see 4.2).3.1.9 Nonfibrous materials. The fabric shall not exceed 2.0 percent starch and

23、proteincontent including chloroform-soluble and water-soluble material when tested as specified (see4.2).3.1.10 Absorbency. The fabric shall be considered absorbent when water and oil areabsorbed into the fabric within 30 seconds, when tested as specified (see 4.4).3.1.11 Leachable chemicals. The cl

24、oth shall contain no more than 250 parts per million(ppm) (micrograms per gram) of water leachable sulfur or 250 ppm (micrograms per gram) eachof water leachable halides (fluoride, chloride, and bromide), when tested as specified (see 4.2).3.1.12 Mercury. The fabric used to manufacture lint-free clo

25、ths shall not contain mercuryand shall not be contaminated by mercury or mercury compounds during manufacturing ofcloths.3.2 Design and construction.3.2.1 Dimensions. Unless otherwise specified (see 6.2), the cloth dimensions shall beClass A or B.3.2.2 Edge stitching. The outer periphery of the clot

26、h shall be hem stitched with a three-thread tight needle thread overseam of 18 + 1 stitches per inch. The thread shall be ofpolyester or hard finished cotton. Hem stitches shall be ended in such a manner so as topreclude the possibility of threads unraveling at these areas on the cloth. Any hanging

27、threadsshall be trimmed to a length of 1/16 inch or less. Grade 1 cloths shall use white thread for edgestitching. Grade 2 cloths shall use dark blue thread for edge stitching.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24671C(SH)63.2.3 R

28、equirements for lanyard (type II design). The lanyard shall be made from 3/16inch clean white braided nylon cord. The nylon lanyard shall have the ends melted to preventfraying. All loose globules or residues resulting from the melting process shall be removed bywiping the ends off with a cloth whil

29、e still hot. The lanyard length shall be no less than32 inches and no more than 36 inches including a minimum of three inches stitched to the clothas shown in figure 1. The lanyard shall be knotted as shown in figures 1 and 2. The overhandknot shall be tied snug up to the modified fishermans knot. T

30、he length between the overhandknot and the melted end of the lanyard shall measure 2 + inches.3.2.3.1 Lanyard stitching. Stitch the lanyard and cloth together by using polyester thread.The stitching shall consist of one row of straight line lock stitching down the center of thelanyard (minimum of si

31、x stitches per linear inch). A minimum of three inches of lanyard shall bestitched to the lint-free cloth. The cloth shall be wrapped around the lanyard one and one-halfturns as shown in figure 1.3.3 Workmanship. The final prepared cloth shall have no tears or holes and no visiblehanging threads of

32、a length greater than or equal to 1/16 inch from cloth edges or loosestitching on cloth edges and lanyards. There shall be no sign of unraveling of thread on edge orlanyard stitching.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for inspection. Unless otherwise specified in the contract or purch

33、aseorder, the contractor is responsible for the performance of all inspection requirements(examinations and tests) as specified herein. Except as otherwise specified in the contract orpurchase order, the contractor may use his own or any other facilities suitable for theperformance of the inspection

34、 requirements specified herein, unless disapproved by theGovernment. The Government reserves the right to perform any of the inspections set forth inthis specification where such inspections are deemed necessary to ensure supplies andservices conform to prescribed requirements.4.1.1 Responsibility f

35、or compliance. All items shall meet all requirements of sections 3and 5. The inspections set forth in this specification shall become a part of the contractorsoverall inspection system or quality program. The absence of any inspection requirements inthe specification shall not relieve the contractor

36、 of the responsibility of ensuring that all productsor supplies submitted to the Government for acceptance comply with all requirements of thecontract. Sampling inspection, as part of manufacturing operations, is an acceptable practice toascertain conformance to requirements, however, this does not

37、authorize submission of knowndefective material, either indicated or actual, nor does it commit the Government to acceptdefective material.4.1.2 Certification of Quality Conformance. A certification of quality conformance shall befurnished with each lot of cloths offered for acceptance. Figure 3 ide

38、ntifies the data which mustbe provided. The certification shall include actual data for quantitative attributes specified inProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24671C(SH)7tables II.a and II.b. The certification may be in the form

39、shown in Figure 3, or a suppliers formwith the same information.4.2 Test methods. Test methods shall be in accordance with table II. More than onecloth may be tested if needed to provide sufficient samples for all required tests. Test andinspection results shall meet the requirements of section 3.4.

40、3 Quality conformance inspection.4.3.1 Fabric. Fabric from which the cloths are made shall be inspected and tested (onceper lot) for all attributes specified in table II.a. An inspection lot is all fabric of the same gradeproduced in the same production run. The fabric shall be tested using the appl

41、icable testmethods in table II.a and shall meet the applicable requirements in section 3. All non-conforming fabric shall be rejected. Test results shall be retained for review by the command oragency concerned upon request.4.3.2 Cloth. Samples of individual finished cloth shall be selected at rando

42、m from all thefinished cloths in a lot. Samples shall be tested for the attributes in table II.b and shall meet theapplicable requirements of section 3. The required number of samples and criteria for lotacceptance are listed in 4.3.2.2.4.3.2.1 Inspection lot. An inspection lot shall consist of clot

43、hs of the same type, grade,and class produced from the same supply of fabric and produced in the same production run.The lot size is the total number of individual cloths in the lot.4.3.2.2 Sampling plan. Testing for water leachable elements is required to be performedon only one finished cloth per

44、lot, regardless of lot size. If the sample fails, the lot shall berejected. For other attributes in table II.b, the following sampling requirements apply:Cloths per lot Sample size Maximum permitted defectiveLess than 1200 5 01200 - 35,000 8 1*Greater than 35,000 13 1*0 for lint and foreign material

45、 (3.1.5) and workmanship (3.3)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24671C(SH)8TABLE II.a. Quality conformance inspection for fabric.Examination or test Requirement paragraph Test methodColorWeaveFinishSolvent compatibilityIdentific

46、ation of cottonWeightYarns per inchWarpFillingAggregate (grade 1 only)Breaking strengthWarpFillingTearing strengthDryWarpFillingWet (water)WarpFillingpHNonfibrous materialsAbsorbencyWater leachable elementsFluorideChlorideBromideSulfur3.1.23.1.43.1.63.1.73.13.1.33.1.33.1.3Table I, Note 1/3.1.33.1.33

47、1.33.1.33.1.33.1.33.1.83.1.93.1.103.1.11Visual 1/Visual 1/Visual 1/Visual 1/1200/FED-STD-1915041/FED-STD-1915050/FED-STD-1915050/FED-STD-1915050/FED-STD-1915100/FED-STD-1915100/FED-STD-191ASTM D 1424ASTM D 1424ASTM D 1424ASTM D 14242811/FED-STD-1912611/FED-STD-191Paragraph 4.4Appendix AProvided by

48、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24671C(SH)9TABLE II.b. Quality conformance inspection for cloth.Examination or test Requirement paragraph Test methodLint and foreign materialDimensionsEdge stitchingLanyard stitching(Type II cloths only)Wo

49、rkmanshipWater leachable elementsFluorideChlorideBromideSulfur3.1.53.2.13.2.23.2.33.33.1.11Visual 1/Visual 1/Visual 1/Visual 1/Visual 1/Appendix A1/ Visual inspection shall be performed by a person with normal visual acuity, natural orcorrected, without magnification, at a normal reading distance. The lighting of inspectionareas shall provide at least 50 foot candles