ARMY MIL-L-40051 E-1991 LEATHER CATTLEHIDE FOR GLOVES《手套用牛皮》.pdf

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1、MIL-L-4OOSLE 83 m 999990b 0473832 8 m 1 INCH-POUND I MIL-L-40051E 29 March 1991 SUPERSEDING MIL -L -4 O O 5 1 D 21 December 1977 MIL IT ARY S P E C IF I CAT I ON LEATHER, CATTLEHIDE, FOR GLOVES This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SC

2、OPE AND CLASSIFICATION 1.1 Scope. This specification covers full grain cattlehide leather for gloves. 1.2 Classification. The leather shall of the following types and classes as specified, and treatment when specified (see 6.2). Type I - Light, 2.0 to 3.0 ounces Type II - Heavy, 3.1 to 4.0 ounces Cl

3、ass a - Sides Class b - Bends Treatment A - Water resistant treated Beneficial cominents (recommendations, additions, deletions) and any pertinent data which may be used in improving this document should be addressed to: U.S. Army Natick Research, Development, and Engineering Center, Natick, MA 0176

4、0-5019 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 8330 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Handling ServicesProvided by IHSNot for Res

5、aleNo reproduction or networking permitted without license from IHS-,-,-2. APPL MIL-L-40053E 83 H 7999906 0473833 T %I MIL-L-40051E ,E DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this docume

6、nt to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of thereto, cited in the SDecifications and Standards (DODISS) and supplement li solicitation (see 6.2). SPEC IF I CAT I ON MI JA ITARY MIL-P-

7、43432 - Packaging of Leather STANDARDS FEDERAL FED-STD-19 1 - Textile Test Methods FED-STD-31 I - Leather, Methods of S m and Testi (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Buildi

8、ng 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The following documents form a part OE this document to the extent specified herein. Unless otherwise specified, tha issues of the documents which. are DOD adopted are those listed in the issue of the DODISS ci

9、ted in the solicitation. Unless otherwise specified, the issues of docunents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN ASSOCIATION OF wxrm CHEMISTS AND CoLoRIsTs (AATCC) Chromatic Transf ererice Scale (Copies may be obtained from the Ameri

10、can Association of Textile Chemists and Colorists, P.O. Box 12215, Research Triangle Park, NC 22709.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries

11、 or other informational services.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i. -t MIL-L-40053E 83 H 999990b 0473834 3 S MIL-L-40051E 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cit

12、ed herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS I 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (

13、see 6.31, in accordance with 4.3. 3.2 Standard sample. The leather, when embossed, shall match the standard sample for fine hair cell pattern and shall be equal to or better than the standard sample with respect to all characteristics for which the standard sample is referenced (see 6.4). 3.3 Materi

14、al. The types I and II leather shall be full grain, chrome tanned cattlehide sides. The type I leather shall be produced from thin, spready hides selected from native dairy cows. The type II leather shall be produced from any suitable cattlehides, except bull hides. 3.4 Trim (form) and area. The cla

15、ss a leather shall be trimmed to conform with the definition of a “side“ and the class b leather shall be trimmed to conform with the definition of a “bend“ as specified in FED-STD-311. The area expressed in square feet shall be legibly marked in the butt area on the flesh side of the leather. 3.5 T

16、hickn,ess. The thickness of the type I leather shall be a minimum of 2.0 ounces and a maximum of 3.0 ounces, and the thickness of the type II leather shall be a minimum of 3.1 ounces and a maximum of 4.0 ounces when examined as specified in 4.4.3. NOTE: 1 ounce = 1/64 inch. 3.6 Color. The color of t

17、he type I leather shall be black. Unless otherwise specified (see 6.21, the color of the type II leather shall be cream, and shall be struck through from grain to flesh. The types I and II leather shall be drum dyed. 3.6.1 Colorfastness (resistance to rubbing). The leather shall be tested for resist

18、ance to dry and wet crocking in accordance with 4.4.4. Staining of the dry cloth shall be not lower than Munsell value 7.0 for the types I and II leather. Staining of the wet cloth shall be not lower than Munsell value 6.5 for the type I leather and not lower than Munsell value 8.0 for the type II l

19、eather. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-40051E 83 I 9999906 0473815 3 I MIL-L-40051E 3.7 Staining. When treatment A is specified (see 6.2), the le ther shall be tested for staining in accordance with 4.4.4. be not lower than e

20、xpanded AATCC value +2. The stain on the test pad shall 3-8 Finish. The leather shall be soft and pliable. Application of a finish to the grain surface is prohibited. If necessary, the flesh side of the leather shall be dry buffed and shaved to obtain a smooth, clean surface and uniform thickness in

21、 all areas of the side or bend. Variations in color on the flesh side resulting from buffing or shaving are permissible. A fine hair cell embossed pattern may be applied to the grain surface of the side. Printed leather shall not be permitted. If embossed, the leather shall match the standard sample

22、 for fine hair cell pattern. Leather previously dyed or finished in a color not specified and then redyed or refinished to match a specified color shall not be acceptable. 3.9 Treatment A. When treatment A is specified (see 6.21, the leather shall be treated with a water resistant compound (see 6.5)

23、. compound has been applied, the leather shall not be exposed to soaps, detergents, wetting agents, or surfactants. After the water resistant 3.10 Stitch tearing strength. At least 80 percent of the specimens tested shall have stitch tearing strengths of not less than 17 pounds for the type I leathe

24、r and 30 pounds for the type II leather when tested as specified in 4.4.4. 3.11 Elongation. At least 80 percent of the specimens tested shall have an elongation of not less than 25 percent at a load of 25 pounds when tested as specified in 4.4.4. Any specimen which ruptures or exhibits grain crack b

25、elow 25 pounds shall be reported as a failing specimen. 3.12 Shinkage. The leather shall not shrink before the temperature reaches 98OC + 0.5OC, nor shall the. leather shrink when subjected to a temperature of 98OC 2 0.5OC for a period of 30 seconds when tested as specified in 4.4.4. 3.13 Stiffness.

26、 At least 80 percent of the specimens tested shall have maximum stiffness values of 120 degrees before soaking and 135 degrees after soaking for the type I leather, and maximum stiffness values of 260 degrees before soaking and 320 degrees after soaking for the type II leather, when tested as specif

27、ied in 4.4.4. 3.14 Water absorption resistance. When treatment A is specified (see 6.21, at least 80 percent of the specimens tested shall gain not more than 20 percent of their weight by water absorption when tested as specified in 4.4.4. 3.15 Oil absorption resistance. When treatment A is specifie

28、d (see 6.21, the leather shall show no evidence of oil absorption when tested as specified in 4.4.4. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i- -* MIL-L-4005LE 83 I 999990b 047381b 5 m NIL-L-40051E 3.16 Air permeability. Wnen treatment A is

29、 specified (see 6.2), 300 cubic centimeters of air shall pass through the leather in 10 minutes or less when tested as specified in 4.4.4. 3.17 Chemical requirements. The leather shall conform to the chemical requirements in table I when tested as specified in 4.4.4. TABLE I. Chemical requirements C

30、haracteristics Minimum Maximum 25.0 Chloroform soluble material, percent L/ - - Chromic oxide, percent - i/ 3.0 - pH value 3.3 Total ash, percent - l/ 9.0 - I - i/ Calculated on moisture-free basis. 3.18 Workmanship. The finished leather shall conform to the quality of product established by this sp

31、ecification, and the occiirrence of defects shall not exceed the applicable acceptable quality levels. 4. QUALITY ASSURANCE PROVISIONS I. 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspecti

32、on requirements (examinations and tests) as specified 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, Th

33、e Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibiiity for compliance. All items shall meet all requirements of sections 3 a

34、nd 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality 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 s

35、ubmitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indica

36、ted or actual, nor does it commit the Government to accept defective Fiaterial. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-40051E 3 E 9999906 0473837 7 I MIL-L-40051E 4.1.2 Certificates of compliance. When certificates of compliance are

37、submitted, the Government reserves the right to inspect such items to determine. the validity of the certification, 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3) b. Quality conformance inspection (see

38、4.4) 4.3 First article inspection. When a first article is required (see 3.1 and 6.2) it shall be examined for the defects specified in 4.4.2 and 4.4.3. 4.4 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with the referenced docume

39、nts. 4.4.1 Component and material inspection. In accordance with 4.1, components and materials shall be inspected in accordance with all the requirements of referenced documents unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase document. 4.4.2 En

40、d item visual examination. The end items shall be examined for the defects listed below. The. lot size shall be expressed in units of sides or bends. The sample unit shall be one side or bend. Any sample unit containing one or more defects shall be classified as a defective unit. Sampling for this e

41、xamination shall be performed in accordance with FED-STD-311. Examine Trim: Class a Class b Color Finish Defect Not sides Not bends Not specified color Color not uniform on grain side Color of type I leather does not completely penetrate leather from grain side through flesh side Not full grain Fles

42、h side not smooth or contains areas of coarse loose Grain surface has application of finish Embossing other than a fine hair cell pattern Printed design on leather Does not match standard sample for fine hair cell fiber pattern 6 Provided by IHSNot for ResaleNo reproduction or networking permitted w

43、ithout license from IHS-,-,-* 9 MIL-L-4005LE 3 m 9999906 0473L 9 m MIL-L-4005 1 E Quality of leather Not clean; stain or foreign matter - i/ Hard, boney, loose, spongy leather, hard scar, cut, hole, brand, scratch, deep fat wrinkle, or grain damage which causes more than a 12 percent loss in total a

44、rea of a side or more than a 6 percent loss in total area of a bend L/ Marking Omitted, illegible, or not in area specified - i/ Light well healed scratches or grub holes, light fat wrinkles, or slight stains shall not be classified as defects. 4.4.3 End item dimensional examination. The end items s

45、hall be examined for the defects listed below. The lot size shall be expressed in units of sides. The sample unit shall be one side. Any sample unit containing one or more defects shall be classified as a defective unit. Sampling for this examination shall be performed in accordance with FED-STD-311

46、, except that a sample size of 15 and a rejection number of 2 shall be applicable for thickness determinations on lots consisting of 51 or more sample units. Examine Defect Area expressed in Less than area marked on the side or bend terms of square feet Thickness : - 1 / Type I Type II Less than 2.0

47、 ounces or more than 3.0 ounces Less than 3.1 ounces or more than 4.0 ounces - i/ Thickness shall be determined in accordance with Method 1011 of FED-STD-311. No individual thickness measurement shall be less than the. minimum or greater than the maximum specified. 4.4.4 End item testing. The method

48、s of testing specified in FED-STD-311, wherever applicable and as listed in table II, shall be followed. Sampling procedure and location from which the sample unit is to be obtained shall be in accordance. with FED-STD-311, except the area of the unit of product from which the specimens are taken sh

49、all by 12 by 12 inches. All test reports shall contain the individual values utilized in expressing the final result. The lot shall be rejected if any one of the following conditions exists: a. More than three specimens fail to meet elongation or stitch tearing b. More than three specimens fail to meet stiffness requirements. c. More than three specimens fail to meet water absorption requirements. strength requirements. 7 Provided by IHSNot for ResaleNo reprod