1、,- - _ - _ MIL-L-43541 83 m 7999906 0394698 2 W I f MILITAHY SPECIFICATION LEATIBR, CATILEHIDE, FOR VISORS AND CHINSTRAPS This specification is mandatory for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope.- This specification covers the requirements for vinyl fi
2、nished, embossed, corrected grain, cattlehide leather (see 6.1). types, as specified (see 6.2). 1.2 Classification.- The leather shall be furnished in the following Type I Type II Type III - Grain side dyed and finished in Black, Shade 111, em- - Grain side dyed and finished in Hatters Green, Shade
3、- Grain side dyed and finished in Pearl Gray, Shade 1564, bossed with fine haircell grain pattern. 245, embossed with heavy skiver grain pattern. embossed with heavy skiver grain pattern. 2. APPLICmLE DOCllMEXITS 2.1 The following documents of the issue in effect on date of invita- tion for bids or
4、request for proposal, form a part of this specification to the extent specified herein: - .S SPECIFICATIONS FEDERAL KK-L-311 - Leather; Methods of Sampling and Testing. MILITARY MIL-L-43432 - Leather, Packaging and Packing of. (Copies of specifications, standards, drawings and publications required
5、by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer. ) 3.1 The requirements specified in 3.5.1, 3.5.2, section 5, and in re- lated provisions of section c, apply only to leather purchased directly by
6、the Government. FSC 8330 6 fi c - -. - *- A 4. THIS DOCUMENT CONTAINS b PAGES, 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-43541 3 7977306 O394677 4 = MIL-L-43541 3.2 Standard sample.- The color and embossing on the grain side of the leat
7、her shall match the standard sample (see 6.4). 3.3 Material.- The leather shall be mad-e from cattlehide. 3.4. Tannage.- The leather shall be chrome tanned, vegetable tanned or vegetable and chrome combination tanned. Types II and III leather may be impregnated with a resin during the tanning proces
8、s sr the finishing opera- tion in order to provide the leather with the desired firmness and stiff- ness (see 6.3). 3.5 Physical requirements. - 3.5.1 Trim (form and area). - The leather shall be furnished in the f om of sides, backs, bends or shoulders and shall be trimmed to conform with the defin
9、itions as listed under “Definition of Terms“ in KK-L-311. The area in terms of square feet shall be legibly marked in the butt area on the flesh side of the leather except that shouiders shall be marked on the flesh side in the corner formed by the straight edge cut and belly cut. 3.5.2 Thickness.-
10、The thickness of the leather shall be as specified (see 6.2) when tested as specified in 4.3. 3.5.3 Color.- The color of the leather shall be as required for the type specified (see 1.2). 3.5.4 Finish.- The grain surface shall be buffed or snuffed only to the extent that is necessary to remove super
11、ficial blemishes. shall be finished on the grain side with a priming coat cf an acrylate base dispersion x latex resin dispersion cr combination of both in order to seal the pores of the leather. vinyl resin solution shall be applied to the grain side to provide water repellency and spot resistance.
12、 shall be embossed as required for the type specified (see 1.2). The leather No less than two additional coats of a The grain side of the finished leather 3.5.5 Resistance to- spotting and blistering.- The leather shall not spot, discolor or blister when tested as specified in 4.3. / 3.5.0 Tackiness
13、.- The leather shall not become tacky when tested as specified in 4.3. 3.5.7 Shrinkage temperature.- 3.5.7.1 Chrome tannage.- Shrinkage of the chrome tanned leather shall not take place at or below gg0C when tested as specified in 4.3. 2 . i i Provided by IHSNot for ResaleNo reproduction or networki
14、ng permitted without license from IHS-,-,-MIL-L- 43 541 3.5.7.2 Vegetable tannage.- Shrinkage of the vegetable tanned leather shall not take place at or below 75OC when tested as specified in 43. 3.5.7.3 Vegetable and chrome combination tannage.- Shrinkage of the vegetable and chrome combination tan
15、ned leather shall not take place at or below gOOC when tested as specified in 4.3. 3.6 Chemical requirements.- The leather shall have a minimum (pH) value of 3.3 when tested as specified in 4.3. 3.7 Workmanship.- The finished leather shall conform to the quality and grade of product established by t
16、his specification. defects shall not exceed the applicable acceptable quality levels. Occurrence of 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection .- Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection req
17、uirements as specified herein Except as otherwise specified, the supplier may utilize his own facilities orbany commercial laboratoyy acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed nec
18、essary to assure supplies and services conform to prescribed requirements. 4 1.1 Certificate of compliance. - submitted, the Government reserves the right to check test such items to determine the validity of the certification. Where certificates of compliance are 4.2 Inspection. - Sampling for insp
19、ection shall be performed in accordance with KK-L-3U except when otherwise indicated hereinafter. 4.2.1 Component and material inspection.- In accordance with 4.1 above, components and materials shall be tested in accordance with all the require- ments of referenced specifications, drawings and stan
20、dards unless otherwise excluded, amended, modified or qualified in this specification or applicable purchase documents. 4.2.2 Examination of the end item.- The classification of defects found during the examination shall be in accordance with the lists shown in 4.2.2.1 and 4.2.2.2. side, back, bend
21、or shoulder. one side, back, bend or shoulder. The sample uni.t for these examinations shall be one The lot size shall be expressed in terms of 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.2.2.1 any cut, brand, hole, hip mark, scratch, heavy v
22、ein, deep fat wrinkle and surface imperfec- tions which impairs the cutting value of more than 12 percent of the total area of the leather 4.2.2.2 Examination for dimensional characteristics .- &amine Defect Area (expressed in terms of Less than area marked on the leather square feet) Marking 4.2.3
23、Examination of preparation for delivery requirements .- An examin- ation shall be made in accordance with the provisions of MIL-L-43432 to determine that packaging, packing and marking requirements of section 5 of this specification are complied with. 4.3 End item testing.- The methods of testing sp
24、ecified in KK-L-311, wherever applicable and as listed in table I, shall be followed. procedure and location from which the sample unit is to be obtained shall be in accordance with KK-L-311, ual values utilized in expressing the final results. jected if any one of the following conditions exists: S
25、ampling All test reports shall contain the individ- The lot shall be re- a. More than one failure occurs for thickness. b. Any failure occurs for spotting, blistering, tackiness, shrink- age temperature o& acidity. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
26、e from IHS-,-,-MIL-L- 43541 TABLE I.- Tests Require - Requirement ment para- Test applicable to Characteristic graph method sample unit composite Material identi- f icat i on Tannage Thi c he s s Primer coat Vinyl resin s olut i on Resistance to spotting and blistering Tac kine s s Shrinkage tempera
27、- ture Acidity (pH) 3.3 3.4 395.2 3.5.4 3.5.4 3.5.5 3.506 3.5.7 3.6. i./ - i/ - 1/ - i/ 1011 4.4.1 3111 7011 6621 - i/ The supplier shall submit a certificate of compliance for thLs charac- teristic. 4.4 Tests.- 4.4.1 Resistance to spotting and blistering.- The specimen shall be a The specimen shall
28、 be 2 by 1 inch rectangle of leather. grain side of the specimen and allowed to air-dry. examined for spotting, discoloration, and blistering. One drop of water shall be placed on the 5. PREPARATION FOR DELIVERY 5.1 Packaging. - 5.1.1 Levels A and C.- Packaging shall be level A or C as specified (se
29、e 6.2). LeathLr shall be packaged in accordance with the applicable requirements of MIL-L-43432. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5.2 Packing.- 5.2.1 Levels A, B, and C.- Packing shall be level A, B, or C as specified (see 6.2). Leathe
30、r shall be packed in acbordance- with the applicable requirements of MIL-L-43432. 5.3 Marking.- In addition to any special marking required by the con- tract or order, shipments shall be marked in accordance with MIL-L-43432. - 6. NCTES 1 6.1 Intended use.- The leather covered by this specification
31、is in- tended for use in making chinstraps and visors for service caps. leather is intended for chinstraps and top visor pieces. type III leather is intended for bottom visor pieces. Ty-pe I: Ty-pe II and 6.2 Ordering data. - Procurement documents should specify the following: a. b. Type required (s
32、ee 2.1). c. Thickness required (see 3.5.2). d. Title, number and date of this specification. Selection of applicable levels of packaging and packing (see 5.1 and 5.2). 6.3 ImpregnatLon.- Resin impregnation of type II and type III leather has been found to produc-e a stiffness which will meet the end
33、 item stiff- - - ness requirements for fabricated visors. 6.4 For access to samples, address the procuring office issuing the in- : vitation for bids. Custodians: Preparing activity: .Army - GL Air Force - li Review activities : Amy - MD Air Force - 82, 85 Amy - GL Project NO. 8330-0086 Review infor
34、mation is current as of the date of this document. For future coordination of changes to this document, draft circulation should be based on the information in the current.Federa1 Supply Classification Listing of DOD Documents. *US. GOVERNMENT PRINTING OFFICE 1981-301-512/1508 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
