1、MIL-W-43638B 83 M 9999906 0483068 T MIL-W-43638B 17 May 1991 SUPERSEDING MIL-W-43638A 19 February 1974 MILITARY SPECIFICATION WEBBING, TEXTILE, WOVEN, FOR TENT FRAMING This specification is approved for use by all Departments and Agencies of the Department of Defense. 7 1. SCOPE 1.1 Scope. This spec
2、ification covers low elongation, cotton, water i, repellent and mildew resistant treated, textile webbing for tent framing. 1.2 Classification. The webbing shall be of the following types as specified (see 6.2): Type1 - m strength (600 pounds) Type 11 - High strength (1200 pounds) Type III - Super s
3、trength (2000 pounds) 2. APPLICABLE Docwmms O I L 2.1 Government documents. 2.1.1 Specifications, standanis, and hancboks. The following specifications, standanis, and handbooks fom a part of this document to the extent specified herein. documents are those listed in the issue of the Department of D
4、efense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). Unless otherwise specified, the issues of these Beneficial cmnts (recmndations, additions, deletions) and any pertinent data which my be used in improving this d0C;ument should be addre
5、ssed to: Center, Natick, MA 01760-5019 by using the Standardization DocJuments Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. U.S. Army Natick Research, Developnent, and Engineering AMSC N/A FSC 8305 DISIRIEWI?ION STATEMENT A. Approved for public release; dis
6、tribution is unlimited. A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-43b38B 3 99999Ob 048LOb9 L MIL-W-43638B SPECIFICATION MILITARY MIL-P-43334 - Packaging of Textile Webbing and Tape STANDARDS FEDERAL FED-STD-191 - Textile Test Methods MI
7、LITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes (Unless otherwise indicated, copies of federal and military specifications, stan-, and handkooks are available from the Standaxdization Doc=uments Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094
8、.) 2.1.2 Other Government documents, drawinas, and publications. The follawing other Government documents, drawings, and publications form a part of this doc=ument to the extent specified herein, the issues are those cited in the solicitation. Unless otherwise specified, FEDERAL TRADE CWISSION Rules
9、 and Regulations Under the Textile Fiber Products Identification Act (Copies may be obtained fromthe Federal Trade Comnission, Correspondence Branch, Washington, Dc 20580-0001.) 2.2 Oder of precedence. In the event of a conflict between the text of this document and the references cited herein, the
10、text of this d0C;ument takes precedence. Nothing in this document, hawever, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.3) in accordance with 4.3.
11、 3.2 Material. It is encouraged that recycled material be used when practical as long as it meets the requirements of this document. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-W-43638B 83 m 9999906 0483070 B m MIL-W-43638B 3.2.1 Cotton y
12、arn. The cotton yarn shall be carded except that the catch- The yarns shall be spun and cord utilized on the latch tp shuttleless loom shall be combed peler 40/2 ply cotton yarn and shall be natural color. twisted into ply yarns as specified in 3.4. 3.2.2 Nvlon yarn. The catch-cord for the bobbin ty
13、pe shuttleless lmn shall be 210 denier, undyed nylon. 3.3 Color. The color of the webbing shall be natural, undyed. The color of the webbing after finishing may deviate from natural by that degree imposed by the functional finishes required or specified. requirements specified in table I when tested
14、 as specified in 4.4.3. 3.4 Physical requirements. The finisnd webbing shall conform to the TAEKE I. Physical requirements L i l Width, inches Tolerance 1.0 - + 1/16 1.5 - + 1/16 1.5 - + 1/16 Weight, oz/lin. yd. i/ Tolerance (percent) 1.15 - +5 1.65 - +5 2.30 - +5 Texture (warp yarns full width min)
15、 : w Edges Stuf fer Birder I 78 17 28 14 96 17 50 17 96 17 96 17 Filling yarns per inch (min) 28 (1 yam per shed) or 56 (2 yarns per shed) 28 (1 yarn per shed) or 56 (2 yarns per shed) 28 (1 yarn per shed) or 56 (2 yarns per shed) Breaking strength lbs. (min) warp, full width 600 1200 2000 Weave (fi
16、gure 1) (figure 3) yarn number, ply and material: 2/ warp yarns: Bocty and edges 12/3 carded 12/3 carded 12/3 carded cotton cotton cotton 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-U-4363B 83 I 9999906 048L071 T MIL-W-43638B TABLE I. Physi
17、cal resuirements (contd) Type1 Type 11 Type III Yarn number, ply and material: 2/ Warp yams: (contd Stuff er Binder Filling yarn 10/7 carded cotton 3/ 12/3 carded cotton 12/3 carded cotton (1 Y- per shed) or 16/2 carded cotton (2 Y- Per shed) 10/7 carded cotton 3/ 12/3 carded cotton 12/3 carded cott
18、on (1 Y- per shed) or 16/2 carded cotton (2 Y- per shed) 10/7 carded cotton 3/ 12/3 carded cotton 12/3 cardd cotton (1 Yarn Per shed) or 16/2 carded cotton (2 Y- Per shed) Elongation percent (max) 8 at 600 lbs. 6 at 1200 lbs. 8 at 2000 lbs. - i/ Values apply only to webbings prior to finishing. - 2/
19、 Tolerance of plus or minus 5 percent yam size pe;_rnitted. - 3/ High strength, low elongation cotton yarn with a minimum tenacity of 3.0 grams per denier. 3.5 Weave. The webbing shall be a double fabric consisting of face, back The face and stuffer warps bound together by a binder warp and the fill
20、ing. and back warps shall be woven in a plain weave, with the filling weaving alternately on the face and back warps. plain. When latch type shuttleless looms are utilized, the filling yarn shall traverse the full width of the webbing and shall be held at the edge by an extra cotton catch-cord end,
21、interlacing with the filling yarn, in one of the methods depicted in figures 4 and 6 for latch needle type shuttleless looms. be nylon and the pint of interlacing the catch-cord and the filling shall occur within the selvage area before the first binder end (see figure 5). The binder warp ends shall
22、 weave When bobbin type shuttleless looms are utilized, the catch-cord shall 3.5.1 Curvature. The finished webbing shall show no more lateral curvature than 1/4 inch when tested as specified in 4.4.3. 3.6 Finish. The webbing shall be water repellent and mildew resistant treated. 4 Provided by IHSNot
23、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-43638B 83 m 99?39906 0483072 L m MIL-W-43638B 3.6.1 Drv ins of webbinq. The webbing shall be dried after finishing with sufficient tension to conform to the elongation requirements specified in table I. 3.6.2 Nonfi
24、brous materials. The starch and protein content including chlorofom-soluble and water-soluble material of the webbing, prior to finishing, shall not exceed 5.5 percent when tested as specified in 4.4.3. and the water repellent shall consist of aluminum salts of saturated carboxylic acid (such as for
25、mate, acetate, palitate, or stearate) zirconium salts of such saturated carboxylic acids, or a combination of both mixed with refined mineral and vegetable waxes, titanate esters, or a combination of both. The product shall be applied either in the fom of an aqueous emulsion or in the form of a wate
26、r-free solvent solution. the treated material shall be no mre than 40 percent when tested as specified in 4.4.3. 3.6.3 Water repellency. The webbing shall be treated for water repellency The dynamic absorption of 3.6.4 Mildew inhibitor. The webbing shall be mildew resistant treated by evenly deposit
27、ing within the webbing a minimum of 0.13 percent to a maximum of 0.40 percent copper as metal from copper 8-quinolinolate using the method of application specified in 3.6.4.1. specified in 4.4.3. The test for copper content shall be as 3.6.4.1 APP lication. The method of application shall be a one-b
28、ath solvent process containing a solubilized or well-dispersed form of copper 8-quinolinolate and not a combination of both; or a treating bath of bound oxine and copper octoate (see 6.5). solubilized or dispersed. Any petroleum fractions, oils, or resins shall be of a nonoxidizing type and free of
29、other copper compounds, naphthenic acid and its salts. solvents are errp?loyed in processing, the finished webbing shall be free from residual solvent. The process used shall be either The finished webbing shall be free from solvent odor. If 3.6.5 . The webbing shall have a pH value of not less than
30、 5.5 nor mre than 8.5 when tested as specified in 4.4.3. 3.7 knqth and put-up. Unless otherwise specified (see 6.2), the rolls of webbing shall consist of the yardage as specified in table II, ami put-up in accordance with 5.1. One end of each piece in the roll shall be marked with paper or other di
31、stinctive means to reveal the number of pieces in each roll. TABLE II. Roll vardaqe and pieces Roll vardaqe Number of pieces Yards per piece Type Form (minimum) (maximum) per roll (maximum) (minimum) I Flat roll 80 . 100 3 5 10 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
32、hout license from IHS-,-,-MIL-W-43638B 83 9999706 0481073 3 MIL-W-436383 TABLE II. Roll yardaqe and pieces (contd) Roll yardaqe Mimber of pieces Yards per piece Type Form (minimum) (maximum) per roll (maximum) (minimum) II Flat roll 60 80 3 III Flat roll 60 80 3 10 10 3.8 Identification tickets. Eac
33、h roll of webbing shall have an identi- fication ticket attached to the roll in accordance with MIL-P-43334. 3.9 Fiber identification. Each roll of webbing shall be labeled or ticketed for fiber content in accordance with the Textile Fiber Products Identification Act. 3.10 Worlananship. The finished
34、 webbing shall: conform to the quality and grade of product established by this specification and the occurrence of defects shall not exceed the applicable acceptable quality levels. 4. QUALITY ASSURANCE 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order,
35、 the contractor is responsible for the performance of all inspection 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 perform- ance of the inspection req
36、uirements specified herein, unless otherwise disapproved by the Government. The Govemnt 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 Responsib
37、ilitv for compliance. All items shall met all require- mnts of sections 3 and 5. The inspection set forth in this specification shall beccm a part of the contractors overall inspection system or quality program. shall not relieve the contractor of the responsibility of ensuring that all products or
38、supplies sutmitted to the Government for acceptance canply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, huwever, this does not authorize sutmission of known defective material, eit
39、her indicated or actual, nor does it camnit the Government to accept defective material. The absence of any inspection requirements in the specification 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i 1 I i I I l 1 l I I i 1 I I I I i ! ! I I I l
40、 i l i l l I 1 I l t I I i l I ! NIL-W-4363B 3 9999906 0481074 5 MIL-W-43638B 4.1.2 Certificates of cmpliance. When certificates of compliance are submitted, the Government reserves the right to inspect such items to determine the validity of the certification. 4.2 Classification of inspections. The
41、 inspection requirensnts specified herein are classified as follm: a. b. First article inspection (see 4.3). Quality conformance inspection (see 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 4.4.2.1 through 4
42、.4.2.3 and tested for the characteristics specified in 4.4.3. 4.4 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall be performed in accordance with MIL-STD-105. 4.4.1 Cormxnent and material inspection. In accordance with 4.1, compo- nents and materials shall b
43、e inspected in accordance with all the requirements of referenced documnts unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase doczunent. 4.4.2 End item examination. 4.4.2.1 Yard-lw-ard examination. The webbing shall be examined on both sides for t
44、he defects listed in table III. counted regardless of their proximity to each other except where two or mre defects represent a single local condition, in which case only the mre serious defect shall be counted. defect for each wqise yard or fraction thereof in which it occurs. lot size shall be exp
45、ressed in yards. yard. (AQL), expressed in tem of defects per hundred units, shall be 0.40 for major defects and 1.5 for total (major and minor combined) defects. number of rolls fromwhich the sample yardage is to be selected shall be in accordance with table IV. among the selected rolls. All defect
46、s found shall be A continuous defect shall be counted as one The The sample unit shall be 1 linear The inspection level shall be II and the acceptable quality level The The sample yardage shall be apportioned equally TABLE III. End item visual defects Classification Examine Defect Major Minor Constr
47、uction and Abrasion mark - resulting in a weak Broken or missing end or pick: workmanship place 101 Two or more contiguous 102 Single 201 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-43b3B 3 = 999990b 04L075 7 MIL-W-43638B TAEU III. End it
48、em visual defects (contd) Classification Examine Defect Major Minor Construction and Any cut, hole, or tear Fine or light filling bar Fine yarn or drop ply - less than 1/2 Float : workmanship (cont Id) the thickness of the normal yam Multiple, mre than 1/2 inch in combined filling directions Multipl
49、e, 1/2 inch or less in combined warp and filling directions Single, mre than 1/2 inch in length Heavy filling bar or heavy place A/ Knot on surface or partially exposed A/ Slack or tight end or ends A/ Slug, slub, jerked-in-filling, or slough-off - more than tree times the thickness of noml yarn Smash Weak or soft spot Wrong draw - mre than 9 inches in Spot, stain, or streak L/ Edges : length Cut frayed or torn Slack or
