1、MIL-C-2131C 3 m 7779706 0382812 2 m MI L-C-2 1 3 1 8C 23 WtoW 1987 SUPERSEDING MIL-C-21318B(AS) 6 March 1973 MILITARY SPECIFICATION CLOTH, BEDFORD, CORD This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification cover
2、s the requirements for an aircraft upholstery ribbed nylon cloth. 2. APPLICABLE DOCUMENTS 2.1 Government documents. * 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to the extent specified herein. Unless otherwise specified, the issue
3、s of these documents shall be those listed in the issue of the DeDartment of Defense Index of SPecifications and Standards (DODISS) and supplement thereto, cited in the solici 0 SPECIFICATIONS Mi 1 i tary PPP-P-1133 Packaging and Packing of Synthet STANDARDS Federal F ED-STD-4 FED-STD-191 Mi 1 i tar
4、y MIL-STD-105 Glossary of Fabric Imperfections Textile Test Methods ation. c Fiber Fabrics Sampling Procedures and Tables for Inspection by Attributes - -. - - -.,.I- _-_ -._ I . I_ Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving th
5、is document should be addressed to: Systems Engineering and Standardization Department (Code 531, Naval Air 1 , Engineering Center, Lakehurst, NJ 08733-5100, by using the self-addressed ! Standardization Document Improvement Proposal (DD Form 1426) amearinq at the I end of this document or by letter
6、. j P - , - AMSC NIA THIS DOCUMENT CONTAINS 9 PAGES. FSC 8305 O distri bution is un1 imi ted. Licensed by Information Handling Services_ - - MIL-C-213L8C 83 m 9499906 0382813 Y MI L-C-2 1 3 1 8C * 2.1.2 Other Government document. The fol lowing other Government document forms a part of this specific
7、ation to the extent specified herein. Unless otherwise specified, the issue shall be that in effect on the date of the solicitation. Rules and Regulations Under the Textile Fiber Products Identification Act * (Copies of specifications, standards and other Government documents required by contractors
8、 in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity. 1 * 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein (except for associated detail
9、 specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. rr * 6 3. REQUIREMENTS 3.1 Standard sample. The cloth s
10、hall, unless otherwise indicated (see 6.21, match the standard sample for shade and appearance and shall be equal to or better than the standard sample with respect to all characteristics for which the standard sample is referenced (see 6.3). 3.2 Materials. 3.2.1 Yarn. The nylon filament yarn shall
11、be a bright, high tenacity, light and heat resistant polyamide prepared from hexamethylene diamine and adipic acid or its derivatives. It shall have a minimum melting point of not less than 244C (471.2“F). any subsequent process. The yarn shall not be bleached in any manner or in 3.3 Weave. The clot
12、h shall be woven as shown in Figure 1. 3.4 Physical requirements. The physical requirements of the finished cloth shall be as specified in Table I when tested as specified in 4.4. 3.4.1 Dyeing and finishing. The cloth shall be thoroughly scoured and The cloth shall then dyed to meet the color and co
13、lorfastness requirements. not be bleached in any manner or process. increase the flammability of clean, undyed, finish-free nylon cloth (see 6,4). added. inches. The type of dyestuff used shall not Fire retardant type compounds or other finishing materials shall not be The dyed finished cloth shall
14、have a maximum char length average of 7 3.5 Color; The color of the cloth shall be as specified by the pro- curing activity. 2 Licensed by Information Handling ServicesMIL-C-ZL318C 83 7779706 03ZLLI b MIL-C-21318C F 8 7 6 5 + 3 a 1 CLOTH WEAVES FACE DOWN Figure 1. Weave diagram. a Licensed by Inform
15、ation Handling ServicesMIL-C-23338C 83 797770b 0382835 W MIL-C-21318C TABLE I. Physi cal requirements . .I_ i - Characteristics ! Yarn per inch, min Warp Fi 11 i ng Weight, ozslsq yd Breaking strength, 1 bs , mi n Warp Fi 11 i ng Tearing strength, lbs, min Warp Fi 11 ing Colorfastness to Laundering
16、Light (40 Standard Fade-ometer hours) Shrinkage in laundering, percent, max Warp Fi 11 i ng 88 36 9.0 - 11.0 3 50 225 20 30 Good Good 3.0 2 .o 5.0 - 8.5 * 3.5.1 Matching. The color and appearance of the dyed and finished cloth shall match the standard sample when viewed under filtered tungsten lamps
17、 which approximate artificial daylight having a correlated color temperature of 7500 + 200K, with illumination of 100 1: 20 foot candles, and shall be a good match-to the sample under incandescent lamplight at 2300 5 200K. 3.6 Width. The width shall be as specified and shall be the minimum acceptabl
18、e width inclusive of selvages. * 3.7 Length. The cloth shall be furnished in rolls of not less than 40 yards or more than 120 yards in length. 2 pieces and no piece shall be less than 40 yards in length. Each roll shall contain no more than 3.8 Fiber identification. Each roll of cloth shall be label
19、ed, ticketed. or invoiced for fiber content in accordance with the Rules and Regulatins Under the Textile Fiber Products Identification Act. and grade of product established by this specification. defects shall not exceed the point level specified. 3.9 Workmanship. The dyed finished cloth shall conf
20、orm to the quality The occurrence of 4. QUALITY ASSURANCE PROVISIONS c G 4.1 Responsibility for inspection. Unless otherwise specified in the et contract or purchase order, the contractor is responsible for the performance 4 Licensed by Information Handling ServicesMIL-C-23338C 83 H 9999906 0382836
21、T H MI L-C-2 1 3 1 8C of all inspection requirements as specified herein. Except as otherwise spec- ified in the contract or purchase order, the contractor may use his own or any other faci 1 i ties sui table for the performance of the inspection requirements specified herein, unless di sapproved by
22、 the Government. The Government re- serves the right to perform any of the inspections set forth in the specifica- tion where such inspections are deemed necessary to assure supplies and servlces conform to prescribed requirements. * 4.1.1 Responsibility for compliance. All items must meet all requi
23、re- ments of sections 3 and 5. 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 assuring that all products or suppl ies submitted to the Gover
24、nment for acceptance comply with all requirements of the contract. Sampling in quality conformance does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to acceptance of defective material. The inspection set forth in this specificat
25、ion . -= 1 4.1.2 Certificate of compliance. Where certificates of compliance are submitted in accordance with 4.6, they shall contain verifiable actual test and inspection data. the cloth to verify the validity of the certification. The Government reserves the right to inspect and test 4.2 Classific
26、ation of inspections. The inspections specified herein are classified as quality conformance inspections. 4.3 Quality conformance inspection. The quality conformance inspection shall consist of all the inspections described in the specification and the end item tests of 4.4. 0 4.4 Examination of the
27、 end item. Examination of the end item shall be in accordance with 4.4.1 through 4.6. 4.4.1 Yard-by-yard examination. Each roll in the sample shall be examined on the face side only. When the total yardage in the roll does not exceed 100 yards, the entire yardage ih the roll shall be examined. Hhen
28、the total yardage in the roll exceeds 100 yards, only 100 yards shall be examined. All defects as defined in Section III of FED-STD-4 which are clearly noticeable at normal inspection distance (3 feet) shall be scored and assigned demerit points as listed in 4.4.1.1. which exceed the limits shown on
29、 Figure 2 of FED-STD-4 shall be scored. No linear yard (increments of 1 yard on the measuring device of the inspection machine) from any one roll within the sample shall be penalized more than 4 points. The sample size shall be in accordance with Table II. The lot shall be unacceptible if the points
30、 per 100 square yards of the total yardage examined exceeds 50 points. The lot shall be unacceptable if the points per 100 square yards of two or more individual rolls exceed 75 points. roll exceeds 45 points per 100 square yards, a second sample equal in size to that of the first sample shall be ex
31、amined only for individual roll quality examination. sample exceeds 45 points per 100 square yards. qual i ty and individual rol 1 qual i ty shall be as fol lows: Only those slubs and knots If one The lot shall be unacceptable if one or more rolls in the second Point compuation for lot O 5 Licensed
32、by Information Handling ServicesNIL-C-ZL3LBC 83 W 7779706 0382817 1 = I .-tTz=z=- ., r _-_- Lot size (yards) - _.-.-. -._U_-.*- 3200 or less 3201 up to and including 10,000 10,001 and over I I i _._ ,_=._ “_ ._.“ _._. -.-,- - MIL-C-21318C 1 Sample size (rolls) I/ - 1 8 I 13 20 Total points scored in
33、 sample x 3600 = Points per 100 Contracted width of cloth (inches) x total yards inspected square yards Defect Defect 3 inches or less in any dimension Points 1 point Defect exceeding 3 inches, but 2 points not exceeding 6 inches in any di mens i on Defect exceeding 6 inches, but 3 points not exceed
34、ing 9 inches in any dimension Defect exceeding 9 inches in any dimension 4 points The following defects, when present, shall be scored four points for each yard in which they occur: Baggy, ridgy or wavy cloth Width less than specified Uneven weaving 4.4.2 Examination for length. 4.4.2.1 Individual r
35、olls. During the yard-by-yard examination, each roll in the sample shall be examined for length, Any length found to be less than the minimum specified or more than 2 yards less than the length marked on the ticket shall be considered a defect with respect to length. The lot shall be unacceptable if
36、 two or more rolls in the sample are defective in respect to length. 6 Licensed by Information Handling ServicesO I 1 t3 T i r t i r - MIL-C-21318C 4.4.2.2 Total yardage in sample. The lot shall be unacceptable if the total of the actual lengths of roll-s in the sample is less than the total of the
37、lengths marked on the tickets. The rolls examined shall be those selected for the examination of individual rolls. 4.5 Examination of preparation for delivery requirements. Examination shall- be made in accordance wi th the provisions of PPP-P-1133 to determi ne that packaging, packing and marking c
38、omplies with the Section 5 requirements. 4.6 Tests. The methods of testing specified in FED-STD-191 wherever applicable and as listed in Table IV shall be followed. The physical and chemical values specified in Section 3 apply to the results of the determin- ations made on a sample unit for test pur
39、poses as specified in the applicable test methods. The sample unit shall be 3-112 continuous yards full width of the dyed and finished cloth and one continuous full yard full width of the unfinished cloth. The lot size shall be expressed in units of 1 yard. The lot shall be unacceptable if one or mo
40、re sample units fail to meet any test requirement specified. All test reports shall contain the individual value utilized in expressing the final result. The sample size (number of sample units) shall be in accordance with Table III. TABLE III. Sample size. . -. - _- . - - - . - . . Lot size (units)
41、 . Sample size 1 -f 1 800 or less I 801 up to and including 22,000 I 22,001 and over 2 I 5 i 3 I TABLE IV. Test methods. 7 - - - -_-. Characteri sti c Paragraph i Test Method I .- -.L.- - _ -1 Melting point 61 eachi ng Weave Yarns per inch Weight Breaking strength Tearing strength Dyes tuff Flame re
42、tardant cornpouni Flame resistance 1 I Shrinkage i Colorfastness to I Laundering i I Li gh t PH 1 3.2 ! 3.2 Figure 1 Table I I Table I Table I Table I 3.4.1 I 3.4.1 3.4.1 Table I Table I Table I Table I I ! i 1533 1/ Viiua 5050 5041 51 O0 51 34 1/ 5903 5552 561 4 5660 281 1 - 1/ 1 -”.- - ,.- - 1/ Un
43、less otherwise specified, a certificate of compliance shall be sub- mitted and will be acceptable for the stated requirement. Manufacturer shall state the test method used. Licensed by Information Handling Services- MIL-C-21318C 3 7777906 0328L7 5 m MIL-C-21318C 5. PREPARATION FOR DELIVERY 5.1 Prese
44、rvation. Preservation shall be level A or C as specified (see 6.2). 5.1.1 Level A and C. The cloth shall be preserved in accordance with the applicable requirements of PPP-P-1133. 5.2 Packing. Packing shall be level A, B or C as specified (see 6.2). 5.2.1 Levels A, B and C. The cloth shall be packed
45、 in accordance with the appl i cab1 e requirements of PPP-P-1133. 5.3 Marking. In addition to any special marking required by the con- tract or order, shipments shall be marked in accordance with PPP-P-1133. 6. NOTES 6.1 Intended use. The cloth covered by this specification is intended for use in th
46、e fabrication of aircraft upholstery. 6.2 Ordering data. Procurement documents should specify the following: a. Title, number and date of this specification. b. Color of cloth required (see 3.5). c. Width of cloth required (see 3.6). d. Length required if other than specified (see 3.7). e. Selection
47、 of applicable levels of put-up, packaging and packing (see 5.1 and 5.2). 6.3 Standard sample. For access to standard sample, address the pro- curing office issuing the invitation for bids. 6.4 Most of the acetate and acid dyes have slight or no effect on flam- mability of nylon cloth, but many of t
48、he chrome and other metallized dyes are known to appreciably increase the flammability of nylon cloth. * 6.5 Subject term (keyword) listing. Bedford Cloth Cord Ribbed nylon Uphol s tery 8 Licensed by Information Handling ServicesI I l I l I I I I I I I I l l I I 1 t t I 1 I I I l I t I l f I 1 I I I
49、 I I l l I I ! I I l L MIL-C-2131C 3 m 7777906 0382820 1 m MI L-C-2 1 3 1 8C 6.6 Changes from previous issue. The margins of this specification are marked with asterisks (or vertical 1 ines) to indicate where changes (additions, modifications, corrections, deletions) from the previous addition were made. This was done as a convenience only and the Government assumes no li abi 1 i ty whatsoever for any i naccuraci es i n these notat ions. contractors are cautioned to evaluate the requirements of this document based on
