1、MIL-U-87127 83 99979Oh 0448339 4 TOP a/ MIL-IT-87127 (USAF) 17 May 1978 MILITARY SPECIFICATION WEBBING, TEXTILE, TUBULAR, PARA-ARAMID, ITERMEDIATE MODULUS This specification is approved for use by the Air Force Materials Laboratory, Department of the Air Force, and is available for use by all Depart
2、ments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers five types of para-aramid tubular webbing. 1.2 Classification, Table I. The webbing shall be of the types as specified in 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents, of the is
3、sue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-W-4 3 3 3 4 Webbing and Tape, Textile, Packaging and Packing of STANDARDS FEDERAL FED-STD-191 Textile Test Methods MILITARY MIL-STD-105
4、Sampling Procedures and Tables for Inspection by Attributes Beneficial comments (recommendations, additions, deletionsj and any pertinent data which may be of use in improving this document should be addressed to: AFML/bXA, iPAFB, O. 45433 by using the self- addressed Standardization Document Improv
5、ement Proposal (DD Form 1426) appearing at the end.o this document or by letter. FSC 8305 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-87L27 83 Y 999990b 0448340 O MIL-W-87127 (USAF) (Copies of specifications, standards, drawings and publi
6、ca?ions required by suppliers in connection with specific procurement functions should be ob- tained from the procuring activity or as directed by the contracting officer . ) 2.2 Other publications, specification to the extent specified herein, Unless otherwise indicated, the issue in effect on date
7、 of invitation for bids or request for proposal shall apply. The following documents form a part of this LAWS AXD REGULATIONS Rules and Regulations under the Textile Fiber Products Identification Act (Copies may be obtained from the Federal Trade Commission, Washington, D. C. 20580.) 3. REQUIREMENTS
8、 3.1 First article. When specified, the supplier shall furnish a sample for the first article inspection and approval. (See 4.2 and 6.2) 3,2 Material. 3.2.1 Yarn. webbing shall be a para-aramid, intermediate modulus type (See 6.4.). The yarn used in the manufacture of all types of tubular 3.2.1.1 De
9、nier. webbing shall be of the denier specified in Table I. The yarn used in the manufacturing of the tubular 3.2.1.2 Twist. The warp yarns shall be twisted so as to have a minimum of 4 and 3 turns respectively, for the 1000 and 1500 denier yam. yarns shall have producers twist only. Filling 3.3 Phys
10、ical requirements. The construction and physical requirements of the finished webbing shall be as specified in Table I. 3.4 Weave. The webbing shall be tubular, plain, one up and one down. 3.5 Length and put-up. Unless otherwise specified, webbing shall be furnished in rolls or on double headed spoo
11、ls or tubes of not less than 90 nor more than 110 yards. no piece shall be less than 20 yards in length. No roll shall contain more than 3 pieces, and 3.6 Identification of product. with the following information and aptached in such a manner as to remain in place until all webbing has been removed
12、from the roll. Each roll shall have a label or tag marked 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i; No singles Weight yarn lin yd Breaking Picks for final Yarn Width (max) strength Ends in per lied yarns denier (in)&/(oz/yd) (lb min) A/ wa
13、rp inch 2/ SWarp Fill Warp Fill 0.25 1250 39 40 1 1 1000 1000 112 9/16 0.30 1500 45 34 1 I 1000 1000 9/16 0.35 2000 . 41 27 1 1 1500 1000 314 0.50 2800 59 27 1 1 1500 1500 1 0.70 3500 81 27 1 1 1500 1500 - i/ Width tolerance 21/16. inch. - 2/ - 31 Half on each side of flattened tube. Requirement bas
14、ed on any single specimen. 3.6 (Continued) Webbing, Textile, Tubular, Para-aramid, Intermediate Modulus Type and specification number Width e Gross yardage Number of pieces in roll Producers name Date of manufacture (month and year). 3.7 Fiber identification. Each roll of webbing shall be labeled, t
15、icketed, or invoiced for, fiber content in accordance with the Textile Fiber Products Identification Act. 3.8 Workmanship. The finished tubular webbing shall conform to the quality and grade of product established by this specification. defects shall not exceed the applicable acceptable quality leve
16、ls. The occurrence of 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified.in the con- tract or purchase order, the supplier is reponsible for the performance of all inspection requirements, as specified herein. Except as otherwise specified in the contract o
17、r order, the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-
18、8712 7 (USAF) reserves the right ta 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 certificates of compliance are submitted, the Gover
19、nment reserves the right to check test such items to determine the validity of the certification. 4.2 First article inspection. When required (see 6.2), the preproduction sample submitted in accordance with 3.1 shall be visually examined for appearance, and shall be tested in accordance with methods
20、 specified in 4.4. 4.3 Inspection. Sampling for inspection shall be performed in accordance with MIL-STD405, except where otherwise indicated hereinafter. 4.3.1 Component and material inspection. As required in 4.1 components and materials shall be tested in accordance with all the requirements of r
21、eferenced specifications drawings, and standards unless otherwise excluded, amended, modified or qualified in this,specification or applicable purchase documents. 4.3.2 End item examination. Defects found during the examination shall be classified in accordance with 4.3.2.1 through 4.3.2.3. 4.3.2.1
22、Yard-by-yard examination. The required yardage of each roll shall be examined on both sides and visual defects classified as listed in Table II. All defects found shall be counted regardless of their proximity one to another, except where two or more defects represent a single local condition of the
23、 webbing, in which case only the more serious defect shall be counted. A continuous defect shall be counted as one defect for each warpwise yard or fraction thereof in which it occurs. The sample unit for this examination shall be one linear yard. The sample size shall be in accordance with level II
24、I of MIL-STD-105. The acceptable quality level for minor defects shall be 2.5 defects per 100 units (yards) and the lot shall be unacceptable if one or more critical defects appear in the sample. The lot size shall be expressed in units of one (1) linear yard each. shall be examined from each roll s
25、elected. The number of rolls from which the sample is to be selected shall be in accordance with Table III of this specification. An approximate equal number of yards 4.3.2.2 Overall examination. Each defect listed below shall be counted no more than once in each roll examined. The sample unit for t
26、his examination shall be one roll. The sample size and acceptance number shall be as shown Def ec ts in Table III. Uncleanliness throughout - Uneven weaving throughout Not labeled in accordance with Textile Fiber Products Identification Act. 4 .-. Provided by IHSNot for ResaleNo reproduction or netw
27、orking permitted without license from IHS-,-,-MIL-W-8712 7 (USAF) Table II. Classification of Defects. Defect .brasion marks arns ( filling) roken or missing end roken or missing pick :oarse or light fillinj lar bist or distortion :ut, hole or tear k-op-pl y Description Resulting in rupture of yarns
28、, or in .nap sufficient to obscure the identity of any yarn exceed- ing 10 percent of width or 1 inch in length. Two yarns per shed, Two or more regardless of length or a single end exceed- ing 6 inches in length. Single end under 6 inches but exceeding 114 inch, Two or more regardless of extent. Th
29、e filling tie-in or joining shall not be construed as a defect of any nature. Resulting in visible difference in stiffness or thickness of tubular webbing and extending for more than 114 inch in the length direction. Resulting in visible difference in stiffness or thickness of tubular webbing and ex
30、tending for 114 inch or less in the length direction. Tubular webbing will not lie flat upon application of manual pressur due to twist or distortion, Any cut, hole or tear. Clearly visible on more than 2 ends within same length and extending over 9 linear inches or rn0re.Y Clearly visible on 1 or 2
31、 ends within same length and extending over 9 linear inches or more.2 Zritical X X X X X X X Minor X X X X 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-7127 3 99999136 0448344 m MIL-TJ- 8712 7 (USAF) Table II, Classification of Defects. (C
32、ont) Defect Cdges ?loats or skips iitchback crack ierked-in filling, ilough-of f , slug :inks :not s tispick , double pick Ilack end - Description Frayed, slack or otherwise poorfy constructed and exceed- ing 114 inch in length, Threeor more, 112 inch or more in combined warp and filling directions
33、or single float or skip over more than 1 inch. Three or more, less than 112 inch in combined warp or filling directions or single float or skip over more than 112 inch but not exceeding 1 inch, if in warp, or more than 114 inch of width but not exceeding 1 inch if in filling. Clearly visible opening
34、 between adjoining picks, or warpwise ten- sion area over part of the width resulting in visible light and heavy places .u A clearly visible loop of filling pulled in at edges.9 More than 3 in any 9 linear inches More than 1 knot in any 9 linear inches. One knot every 2 yards with untrimmed ends ext
35、ending from surface of tubular webbing. Two or more across the full width. Single across the full width. Two or more in the same length, jerked in between picks, or forming clearly visible loops on the surface. Single jerked in between picks or forming clearly visible loops on the surface. 6 /- e ki
36、tical X X X X X Mino 1: X X X X X X X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-C. Defect Description Slub, or slug, gout More than twice the thickness of the yarn (or ply, if plied). Any smash. Spot, stain or streak Any clearly visible. I Isma
37、sh TJght end Clearly visible up to 12 inches in length. I/ Wrong draw Extending for more than 9 inches. Beyond specified tolerances. I Pi“ i1 -.I Critical X X X Minor X X X j/Clearly visible at normal inspection distance (approximately 3 feet). Table III. Sampling Plan. r Maximum number defects Samp
38、le size acceptable in sample I Lot size in yards in rolls (see 4.3.2.2 & 4.3.2.3) 3 O i/ up to 1200- 1201 up to and including 3,200 5 O 3201 up to and including 10,000 8 O 10,001 up to and including 35,000 13 O 35,001 up to and including 150,OOC 20 1 150,001 and over 32 2 “if a lot contains fewer th
39、an 3 rolls, each roll in the lot shall be examined. I 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-87127 (USAF) 4.3.2.3 Length examination. 4.3.2.3.1 Individual roll or spool. Each roll or spool in the sample shall be examined for the defe
40、cts listed below. The sample unit for this examina- tion shall be one roll or spool. be as shown in Table III. The sample size and acceptance number shall Defects Gross length more than 2 yards less than gross Any piece less than 20 yards in length. Any spool containing more than 3 pieces. length ma
41、rked on piece ticket. 4.3.2.3.2 The lot shall be un- acceDtable if the total of the actual gross lengths of rolls or spools in Examination for total yardage in sample. - - the samples selected in accordance with Table III is less than the total of the gross lengths marked on roll tickets. 4.3.3 Exam
42、ination of preparation for delivery requirements. An examination shall be made in accordance with the provisions of MIL-W-43334 to determine the packaging, packing and marking comply with the Section 5 requirements of this specification. 4.4 Testing of the end item. wherever applicable and as listed
43、 in Table IV, shall be followed. breaking strength, the physical and chemical values specified in Section 3 apply to the average of the determinations made on a sample unit for test purposes as specified in the applicable test methods. the lot shall be rejected if any single determination is lower t
44、han the specified minimum. under standard conditions in accordance with FED-STD-191. All test reports shall contain the individual values utilized in expressing the final result. The sample size shall be as follows: The methods of testing specified in FED-STD-191, Except for For breaking strength, E
45、xcept as otherwise specified, all tests shall be performed Lot size (yards) 800 or less 801 to 5,000 5 $001 to 22,000 22,001 and over Sample size 2 3 5 7 The lot shall be unacceptable if one or more units fail to meet any requirement specified. sample unit for testing shall be 5 yards. The lot size
46、shall be expressed in units of 1 linear yard. The 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Table IV. Test Methods Characteristic Mater5al identification Denier Twist Weight Texture : Ends, face and .back warp Picks per inch Breaking strength
47、 Width Weave Requirement Paragraph 3.2.1 Table I 3.2.1.2 Table I Table I Table I Table L Table I 3.5 -.4 Test Method - i/ i/ 4021 - 4052 5041 5050 5050 4108s 5020 Visual 2/Unless otherwise specified, a certificate of compliance will be acceptable 2/Speed of the pulling jaw shall be 2 2 112 inches pe
48、r minute. for the stated requirement. 5. PACKAGING 5.1 Packaging Packaging shall be level A, B or C as specified (see 6.2). 5.1.1 Levels A, By and C. Tubular webbing, put up as specified,shall be packaged in accordance with the applicable requirements of MIL-W-43334. 5.2 Packing. Packing shall be le
49、vel A, B-or C as specified (see 6.2). 5.2.1 Levels A, By and C. the applicable requirements of MIL-W-43334. Tubular webbing shall be packed in accordance with 5.3 Marking. or order, .shipments shall be marked in accordance with MIL-W-43334. 6. NOTES In addition to any special marking required by the contract 6.1 Intended use. intended for use in parachutes and their accessories. The tubular webbing
