1、 The following commercial specification is adopted from the military document. Revision A includes all known accepted revisions, amendments, notices and Department of Defense (DoD) engineering changes previously developed for this item. Revisions B and forward include changes adopted to reflect tech
2、nology and design evolution. CLOTH, DUCK, NYLON, 12.5 OUNCE The Parachute Industry Association makes this document available for use by Industry and Government organizations that wish to apply this specification to their products. 1. SCOPE 1.1 Scope. This specification covers 12.5 ounce, nylon, duck
3、 cloth. 1.2 Classification. The cloth shall be of the following classes as specified (see 6.1): Class 1 - Dyed Class 2 - Dyed, water-repellent. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in Sections 3 and 4 of this specification. This section does not inc
4、lude documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of the documents cited in Secti
5、ons 3 and 4 of this specification, whether they are listed or not. 2.2 Government publications. 2.2.1 Government publications. The following publications form a part of this document: FEDERAL STANDARDS FED-STD-4 - Glossary of Fabric Imperfections (Unless otherwise indicated, copies of Federal and Mi
6、litary specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 DISTRIBUTION STATEMENT: All Rights Reserved. No Part of this publication may be reproduced without prior written permission from Parachute Industry Association. Additional copie
7、s may be purchased on-line from PIA Specifications and Products at: . PIA-C-43375C 21 February 2013 Superseding PIA-C-43375B 27 February 2009 PIA-C-43375C Robbins Avenue, Philadelphia, PA 19111-5094. Electronic copies of Military and Federal standards and specifications may be obtained from https:/a
8、ssist.daps.dla.mil/quicksearch/.) FEDERAL TRADE COMMISSION (FTC) 16 CFR 303 - Rules and Regulations Under the Textile Fiber Products Identification Act (Copies are available online at: www.ftc.gov or from the Federal Trade Commission, 600 Pennsylvania Avenue, N.W., Washington, DC 20580-0001. Electro
9、nic copies may be obtained from http:/www.access.gpo.gov/. ) 2.3 Non-government publications. The following documents form a part of this document (see 2.4). AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ Z1.4 - Sampling Procedures and Tables for Inspection by of Attributes (Copies are available online
10、 at: www.asq.org or American Society for Quality, 600 Plankinton Avenue, Milwaukee, WI 53203. ASTM INTERNATIONAL (ASTM) ASTM D 737 - Standard Test Method for Air Permeability of Textile Fabrics ASTM D 1776 - Standard Practice for Conditioning Textiles for Testing ASTM D 3775 - Standard Test Method f
11、or Warp (End) and Filling (Pick) Count of Woven Fabrics ASTM D 3776 - Standard Test Methods for Mass per Unit Area (Weight) of Fabrics ASTM D 5034 - Standard Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test) (Application for copies should be addressed to ASTM Internatio
12、nal, 100 Barr Harbor Drive, West Conshohoken, PA 19428-2959. Electronic copies may be obtained from www.astm.org.) AMERICAN ASSOCIATION OF TEXTILE COLORISTS AND CHEMISTS (AATCC) AATCC 8 - Colorfastness to Crocking; Crockmeter Method AATCC 16 - Colorfastness to Light AATCC 20 - Fiber Analysis: Qualit
13、ative AATCC 20A - Fiber Analysis: Quantitative AATCC 22 - Water Repellency: Spray Test AATCC 61 - Colorfastness to Laundering: Accelerated AATCC 81 - pH of the Water-Extract from Wet Processed Textiles AATCC 96 - Dimensional Changes in Commercial Laundering of Woven and Knitted Fabrics Except Wool A
14、ATCC 107 - Colorfastness to Water Page 2 of 10 PIA-C-43375C AATCC 192 - Weather Resistance of Textiles: Sunshine-Arc Lamp Exposure with and without Wetting AATCC Evaluation Procedures: - 1 Gray Scale for Color Change - 2 Gray Scale for Staining - 8 AATCC 9 - Step Chromatic Transference Scale - 9 Vis
15、ual Assessment of Color Difference of Textiles. (Application for copies should be addressed to the AATCC National Headquarters, P.O. Box 12215, Research Triangle Park, NC 27709-2215. Electronic copies may be obtained from www.aatcc.org.) 2.4 Order of precedence. Unless otherwise noted herein or in t
16、he contract, in the event of a conflict between the text of this document and the references cited 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 3.1 Firs
17、t article. When specified (see 6.1), a sample representative of the production quality shall be subjected to first article inspection in accordance with 4.3. 3.2 Standard. The cloth shall, unless otherwise indicated (see 3.5.1), match the standard for shade and shall be equal to or better than the s
18、tandard with respect to all characteristics for which the standard is referenced (see 6.2). 3.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets o
19、r exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.4 Material. 3.4.1 Yarn. The yarn for the warp shall be 840 nominal denier, high tenacity bright, multifilament nylon and the yarn for the filling shall be 1260 nominal denier or equival
20、ent plied denier, bright high tenacity multifilament nylon. The yarn shall not be bleached in any manner or process. 3.5 Color. The color of the finished cloth shall be as specified by the procuring activity (see 6.1). 3.5.1 Visual shade matching. When evaluated in accordance with 4.4.4.2, the color
21、 of the dyed fabric shall match the standard when viewed with sources simulating artificial daylight D75 illuminant and shall be good match to the standard under incandescent lamplight. 3.5.2 Colorfastness. When tested as specified in 4.4.3, the finished fabric shall show fastness to light, launderi
22、ng, and crocking as follows: Page 3 of 10 PIA-C-43375C Characteristic Rating, Min Light (Fade) 1/3-4 Laundering: 2/Color Change 3-4 Staining 3-4 Crocking 3/: Dry Wet 3.5 3.5 Notes: 1/Rated using the AATCC Evaluation Procedure 1, Gray Scale for Color Change 2/Rated using the AATCC Evaluation Procedur
23、e 1, Gray Scale for Color Change and AATCC Evaluation Procedure 2, Gray Scale for Staining 3/Rated using the AATCC Evaluation Procedure 8, AATCC 9-Step Chromatic Transference Scale. 3.6 Physical requirements. The cloth shall conform to the requirements specified in TABLE I when tested as specified i
24、n 4.4.3. TABLE I Physical requirements. 3.6.1 Width. The width of the cloth shall be as specified in the procuring document 1/2 inch (see 6.1) and shall be the minimum acceptable width inclusive of the selvage when fly-shuttle or shuttleless looms with a tuck-in selvage are used. For all other shutt
25、leless looms, the width measurement shall be made between the last warp yarn on each side excluding the protruding fringe(s). Raw edges shall not be permitted. 3.6.2 Weave. The weave shall be plain weave, one up, one down. 3.7 Finish. The Class 1 cloth shall be desized, scoured, dyed and heat set. T
26、he Class 2 cloth shall be desized, scoured, dyed, heat set and water repellent treated. The cloth shall not be bleached in any manner or process. 3.7.1 Water repellency, Class 2. The Class 2 cloth shall be given a nontoxic water repellent treatment in accordance with paragraph 3.12. Testing shall be
27、 as specified in 4.4.3. 3.7.2 Spray rating, Class 2. The results of the three determinations on the sample unit for spray rating shall be equal to or better than ratings 90, 90, 80, when tested as specified in 4.4.3. 3.7.3 pH. The pH value of the water extract shall be not less than 5.5 or more than
28、 9.0 when tested as specified in 4.4.3. 3.8 Dimensional stability. The cloth shall have an average dimensional change of no Weight oz./sq.yd minimum Yarns per inch minimum Breaking strength pounds minimum Air permeability cu. ft./minute/sq.ft. maximum Warp Filling Warp Filling 12.5 56 28 800 700 3.0
29、 Page 4 of 10 PIA-C-43375C more than 3.5 percent maximum in either warp or filling direction. Testing shall be as specified in 4.4.3. 3.9 Length and put-up. Unless otherwise specified (see 6.1), the cloth shall be put-up in rolls containing not less than 80 yards. Each roll shall contain not more th
30、an four pieces and no piece shall be less than 40 yards. 3.10 Fiber identification. Each roll shall be labeled and ticketed for fiber content in accordance with the Rules and Regulations Under the Textile Fiber Products Identification Act. 3.11 Workmanship. The finished cloth shall conform to the qu
31、ality established by this specification. The demerit points per 100 square yards when calculated as specified in Section 4 shall not exceed the established maximum point values. 3.12 Toxicity. The finished cloth shall not present a dermal health hazard when used as intended (see 4.4.4). 3.13 Date of
32、 manufacture. The date of manufacture is defined as the date (month and year) of the last manufacturing process that affects the physical characteristics of the cloth. This would not include slitting, inspection or rewinding. 4. VERIFICATION 4.1 Responsibility for inspection. Unless otherwise specif
33、ied in the contract or purchase order, 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 their own or any other facilities suitable for
34、 the performance of the inspection requirements specified herein, unless disapproved by the procuring activity. The procuring activity 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 conf
35、orm to prescribed requirements. 4.1.1 Responsibility for compliance. All items shall meet all requirements of Sections 3 and 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 requiremen
36、ts in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies, submitted to the procuring activity for acceptance, comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable pract
37、ice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the procuring activity to accept defective material. 4.1.2 Certificates of Compliance. When Certificates of Compliance are submitted,
38、the procuring activity 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: Page 5 of 10 PIA-C-43375C a. First article inspection (see 4.3) b. Quality confor
39、mance inspection (see 4.4). 4.3 First article inspection. When a first article is required (see 3.1 and 6.1), it shall be examined for the defects specified in 4.4.2.1 through 4.4.2.4 and tested for the characteristics specified in 4.4.3. 4.4 Conformance inspection. 4.4.1 Component and material insp
40、ection. 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 End item inspection. 4.4.2.1 Yard-by-yar
41、d 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 in the roll shall be examined. When the total yardage in the roll exceeds 100 yards, only 100 yards shall be examined. All defects, as defi
42、ned 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 4.4.2.1.1. No linear yard (increments of 1 yard on the measuring device of the inspection machine) from any one roll within the sample shall b
43、e penalized more than four points. The sample size shall be 20 rolls selected from 20 cartons. The lot shall be unacceptable if the points per 100 square yards of the total yardage examined exceeds 35 points. The lot shall be unacceptable if the points per 100 square yards of two or more individual
44、rolls exceeds 53 points. If one roll exceeds 53 points per 100 square yards, a second sample of 20 rolls shall be examined only for individual roll quality. The lot shall be unacceptable if one or more rolls in the second sample exceeds 53 points per 100 square yards. Point computation for lot quali
45、ty and individual roll quality shall be as follows: Total points scored in sample x 3600 = Points per 100 square yards Contracted width of cloth (inches) x Total yards inspected 4.4.2.1.1 Demerit points. Demerit points shall be assigned as follows: - For defects 3 inches or less in any dimension - o
46、ne point - For defects exceeding 3 inches, but not exceeding 6 inches in any dimension - two points - For defects exceeding 6 inches, but not exceeding 9 inches in any dimension - three points - For defects exceeding 9 inches in any dimension - four points. The following defects, when present, shall
47、 be scored four points for each yard in which they occur: - Baggy, ridgy or wavy cloth - Poor dye penetration, mottled, streaky, cloudy or striated in excess of that shown by standard Page 6 of 10 PIA-C-43375C - Overall uncleanness - Width less than specified - Raw edge - Objectionable odor 1/. Note
48、: 1/Normal residue odor of chemicals commonly used to apply treatment of dyestuff for finish or color shall not be regarded as objectionable. 4.4.2.2 Individual rolls. During the yard-by-yard examination, each roll shall be examined for length. Any roll length found to be less than the minimum speci
49、fied, or more than two yards below the length marked on the roll ticket, or unless otherwise specified, any piece less than 50 yards shall be rejected. 4.4.2.3 Total yardage. The lot shall be unacceptable if the total of the actual lengths of rolls is less than the total lengths marked on the ticket. 4.4.2.4 Shade and finish appearance examination. During the yard-by-yard examination, each roll in the sample shall be examined for shade and finish appearance. Any roll in the sample
