1、Y - MIL-C-4120D 3 777770b 0440817 O MIL-C-41820D I 1 ?.iarch i976 SUPERSEDING MIL-C-41820C 29 July 1969 MILITARY SPECIFICATION CLOTH, GABARDINE, POLYESTER AND RAYON This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. “his specifica
2、tion covers polyester and rayon spun yarn gabardine cloth (see 6.1) 1.2 Classification. as specified (see 6.2): The cloth shall be of the following types and classes Type 1 - 6.0 ounce Type II - 6.4 ounce Type III - 8.0 ounce Class 1 - Bleached mite ._ Class 2 - Dyed 2. APPLICABLE DOCUMENTS * 2.1 Is
3、sues of documents. The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: SPECIFICATIONS FEDERAL V-T-285 - Thread, Polyester PPP-P-1133 - Packaging and Packing of Synthetic Fiber Fabrics
4、 STANDARDS FEDERAL FED-STD-4 - Glossary of Fabric Imperfections . FED-STD-191 - Textile Test Methods FSC 8305 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-LtLBZC!D 83 m 7777706 OLI40820 7 m MIL-C-41820D . . . . .I . . e. .I . MILITARY MIL-ST
5、D-105 - Sampling Procedures and Tables for Inspection by Attributes. - (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer,)
6、LAWS AND REGULATIONS Rules and Regulations Under the Textile Fiber Products Identification Act (Copies may be obtained without charge from the Federal Trade Commission, Washington, DC 20580.) 3. REQUIREMENTS 3.1 Standard sample. When a standard sample is available (see 6.3), the cloth shall match th
7、e standard sample for shade and shall be equal to or better than the standard sample with respect to all characteristics for which the standard sample is referenced. 3.2 Material. .- 3.2.1 Fiber blend, 3.2.1.1 Polyester fiber. The fiber shall be polyethylene giycol terephthalate. The use of opticall
8、y brightened fiber for type I and type III, class 1 is per- mitted. Unless otherwise specified, the use of optically brightened fiber for type II and type III, class 2 is prohibited. 3.2.1.2 Rayon fiber. The fiber shall be rayon staple. The use of rayon waste of any kind is prohibited. * 3.2.2 m. Th
9、e warp and filling yarn shall be a blend of polyester staple fiber and rayon staple fiber of such proportions as to analyze not less than 65 percent nor more than 75 percent polyester fiber when tested as specified in 4.4. The yarn for all types shall be spun and twisted into 2 ply yarn. 2 Provided
10、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-41820D 83 W 777770b 0440823 7 W - -. MIL-C-41820D. . . . 8 3.3 Color. 3.3.1 Class 1, bleached. The color of the finished type I and type III, class 1, cloth shall be a bleached white conforming to.the stan
11、dard sample when tested as Specified. in the same manner. preferably with hydrogen peroxide or peroxygen chemicals. bleach may be supplemented with a blue-violet fluorescing optical brightener. All cloth within any 0ne“contract shall be processed for whiteness The color shall be obtained with a chem
12、ical bleach, The chemical * 3.3.2 Class 2, dyed. match the standard sample (see 6.2 and 6.3). sulfur capable of oxidation to sulfuric acid is prohibited. The dyestuff shall be chosen and applied so that the dyed and finished cloth shall contain no more labile sulfur than shown by the standard sample
13、 when tested as specified in 4.4. When a standard sample is not available the dyed and finished cloth shall show not more than a slight trace of labile sulfur as defined in the test method when tested as specified in 4.4. The color of the cloth shall be as specified and shall * 3.3,2,1 Labile sulfur
14、. The use of dyes and compounds containing elementary * 3.3.3 Matching. The color of class 2 cloth shall match the standard sample under artificial daylight having a color temperature of 7500 Kelvin and shall be a good approximation to the standard sample under incandescent lamp-light at 28* Kelvin.
15、 under 7500 Kelvin light and also under 7500* Kelvin light with ultra-violet coutpment added. The color of the class 1 cloth shall match the standard sample 3.3.4 Colorfastness. The dyed finished cloth shall show fastness to light, .- When no standard sample is available, laundering, perspiration an
16、d crocking equal to or better than the standard sample when tested as specified in 4.4. or when the standard sample is not referenced for colorfastness, the dyed cloth shall show “good“ fastness to light, laundering and perspiration, and no more crocking than Munsellvalue 8.5. Type I cloth and type
17、III, class 1 cloth shall show no more discoloration in light than that of the standard sample when tested as specified in 4.4. 3.4 Physical requirements. The finished cloth shall conform to the require- utents shown in table I when tested as specified in 4.4. 3 Provided by IHSNot for ResaleNo reprod
18、uction or networking permitted without license from IHS-,-,-MIL-C-41820D 3 7777706 O440822 O , MIL-C-41820D TABLE I. Physical requirements Weight, Yarns per Breaking ounces per inch strength, pounds square yard (minimum) (minhum) . (minimum): Warp Filling Warp Filling Weave Type I Type II 2 up-1 dow
19、n right twill 6.0 110 52 210 90 6.4 Type III 8. O 110 62 210 105 2 up-1 dam right twill 92 42 280 120 2 up-1 dom right twill 3.5 Width. The minimum width (inclusive of the selvages) of the finished cloth shall be as specified (see 6.2). 3.6 Nonf ibrous materials. I 3.6.1 Type I and type III, class 1
20、. The starch and protein content including chloroform-soluble and water-soluble material after bleaching shall not exceed .- 2.0 percent when tested as specified in 4.4. 1. 3.6.2 Type II and type III, class 2. The starch and protein content, including P chloroform-soluble and water-soluble material
21、after dyeing and prior to the resin finish, shall not exceed 2.0 percent when tested as specified in 4.4. finish applied to the dyed cloth shall not exceed 12,*0 percent. The resid 3.7 Finish. 3.7.1 Typ e I and type III, class 1. The type I and type III class 1 cloth shall be scoured, heat set and b
22、leached to provide zk finish equal in character to that of the standard sample and meet the requirements specified herein. A resin finish may be used to control shrinkage. approved for use are prohibited (see 6.7). Resins other than those 3.7.2 Type II and type III, class 2. The type II and type III
23、 class 2 cloth I . shall be scoured, heat set, dyed and resin treated, and washed to provide a finish equal in character to that of the standard sample (see 6.7); treated cloth shall be processed at such a time and temperature cycle that will insure adequate curing of the resin, and shall be washed
24、thoroughly to remove all traces of uncured resin. The resin 3.8 ptI. The pH value of the water extract of the finished cloth shall be not less than 5.0 nor more than 8.5 when tested as specified in 4.4. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
25、-,-. MIL-C-41820D 3 m 7979706 0440823 2 W MIL-C-41820D 3.9 Shrinkage. not shrink more than 3.5 percent in the warp and 2.0 percent in the filling when tested as specified in 4.4 The preshrinking process shall not be indenti- fied by name or trademark either on the cloth or on the ticket or package.
26、3.9.1 Type I and type III. The cloth shall be preshrunk so that it shall 3.9.2 Type II. The cloth shall be preshrunk so that the cloth shall not shrink more than 2.5 percent in the warp and 1.5 percent in the filling when tested as specified in 4.4. by name or trademark either on the cloth or on the
27、 ticket or package. 3.10 Seam efficiency. than 85 percent when tested as specified in 4.4. The preshrinking process shall not be identified The cloth shall have a seam efficiency of not less * 3.11 Length and put-up. Unless otherwise specified (see 6.2), the cloth shall be furnised in continuous len
28、gths of not less than 40 yards. be put-up on rolls as specified in PPP-P-1133. Each length shall 3.12 Fiber identification. Each roll .shall be labeled, ticketed or for fiber content in accordance with the Textile Fiber Products Identification Act. 3.13 Workmanship. The finished cloth shall conform
29、to the quality established by this specification. The demerit points per 100 square yards when calculated as spscified in section 4 shall not exceed the established maximum point value. - 4. QUALITY ASSURANCE PROVISIONS 4,1 Responsibility for inspection. Unless otherwise specified in the contract or
30、 purchase order, the contractor is responsible for the performance of a11 inspection requirements as specified herein. Except as otherwise specified, in the contract or order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified
31、 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 deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Certificate of compliance. Where cer
32、tificates of compliance are sub- mitted, the Government reserves the right to check test such items to determine the validity of the certification. * 4.2 Quality conformance inspection, Sampling for inspection shall be performed in accordance with MIL-STD-105, except where otherwise indicated herein
33、after. 4.2.1 Component and material inspection. In accordance with 4.1 above, components and materials shall be inspected in accordance with all the requirements of referenced specifications, drawings and standards unless otherwise excluded, amended, modified or .qualified in this specification or a
34、pplicable purchase document. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-41820D 3 m 777770b OLtLt0824 Lt m f MIL-C-41820D 4.2.2 Examination of the end item. Defects found during examination shall . be classified in accordance with 4.2.2.1 t
35、hru 4.2,2.4. * 4.2.2.1 Yard-by-yard examination. Each roll in the sample shall be examined on the face side only. yardsz the entire yardage in the roll shall be examined. in the roll exceeds 100 yards, only 100 yards shall be examined, Al1 defects as defined in Section III of FED-STD-4 which are cle
36、arly 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 knots which exceed the limits shown on Sears Fabric Defect: Scales (see 6.6j D for slubs and C for hots, shall be scored. No linear yard or (incr
37、ement of one yard on-the measuring device of the inspection machine) from any one roll within the sample, shall be penalized more than 4 points. linear yard. lot shall be unacceptable if the points per 100 square yards exceed the following: When the total yardage h the roll does not exceed 100 When
38、the total yardage The sample unit for this examination shall be one The sample size shall be 20 rolls selected from 20 containers. The 35.0 points for dyed cloth 30.0 points for white cloth The lot shall be unacceptable if two or more individual rolls exceed the f ollawing : 53.0 points for dyed clo
39、th 45.0 points for white cloth If one roll exceeds the point level, a second sample of 20 rolls shall be selected for individual roll quality examination. more rolls in the second sample exceeds the point level. the lot quality and individual roll quality shall be as follows: The lot shall be unacce
40、ptable if oneor t- Point computation for Total points scored in sample x 3600 Contracted width of cloth (inches) x Total yards inspected o Points per 100 square yards 4.2.2.1.1 Demerit points. Demerit points shall be assigned as follows: For defects 3 inches or less in any dimension. For defects exc
41、eeding 3 inches, but not exceeding For defects exceeding 6 inches, but not exceeding For defects exceeding 9 inches in any dimension. - one point - two points - three points - four points 6 inches in any dimension. 9 inches in any dimension. NOTE: The following defects when present shall be scored f
42、our points for each yard in which they occur: Width of cloth less than specified. Poor dye penetration, streaky or cloudy. Excessive neppiness . I 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- NIL-C-4182OD 83 9799906 0440825 b W MIL-C-41820D 4.2
43、.2 2 Examination for length. 4.2,2.2.1 Individual rolls. During the yard-by-yard examination, each roll in-the sample shall be examined for length. the minimum specified or more than two yards below the length marked on the ticket- shall be considered a defect-vith respect to length. unacceptable- i
44、f two or more rolls in the sample are defective in respect to length. The lot shall be unacceptable if the total of the actual lengths of rolls in the sample is less than the total of lengths marked on the ticket. Any length found to be less than The lot shall be 4.2.2.2.2 Total yardage in sample. *
45、 4.2.2.3 Examination for shade and finish. Each roll in the sample shall be examined visually for shade match (see 3.3.3) and finish (see 3.7). A roll shall be unacceptable if it fails to meet the requirements for shade match and finish. The sample unit shall be a 4-inch by 20-inch swatch of the clo
46、th. A sample unit shall be drawn from each roll in the lot, 4.2.2.4 Examination for identification of preshrinkage process and compliance with Textile Fiber Products Identification Act. During the yard-by-yard examination each roll in the sample shall be examined for these defects. lot shall be unac
47、ceptable if two or more rolls in the sample contain identi- fication of the preshrinkage process by name or trademark on the cloth or ticket, or are not labelled or ticketed in accordance with the Textile Fiber Products Identification Act. The 4.3 Examination of preparation for delivery requirements
48、. An examination shall be made in accordance with the provisions of PPP-P-ll33 to determine that packaging, packing and marking comply with the section 5 requirements. wherever applicable and as listed in table II, shall be followed. and chemical values specified in section 3 apply to the results of
49、 the deter- minations made on a sample unit for test purposes as specified in the applicable test method. expressing the final result. full width of the finished cloth, and 1/4 yard full width of cloth prior to resin treatment. The sample size (number of sample units) shall be as shown in the table below. lot shall be unacceptable if one or more sample units fail to meet any test requirement specified. 4.4 Testing of the end item. The meth
