1、 The following commercial specification is an original Parachute Industry Association specification. _ CLOTH AND SHEETING POLYESTER AND COTTON BLEND The Parachute Industry Association makes this document available for use by Industry and Government organizations that wish to apply this specification
2、 to their products. 1. SCOPE 1.1 Scope. This specification covers dyed, unshrunk polyester and cotton blend 65/35 percent, or 50/50 percent commercial Designation No. 128 (muslin). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in Sections 3 and 4 of this spe
3、cification. This section does not include documents cited in other sections of this specification nor is it 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
4、requirements of the documents cited in Sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government publications. 2.2.1 Government publications. The following other government publications form a part of this document. FEDERAL STANDARDS FED-STD-4 - Glossary of Fabric Imperf
5、ections (Unless otherwise indicated, copies of the above specifications and standards are available from the Standardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. Electronic copies of Military and Federal standards and specifications may be obtained from
6、 https:/assist.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.
7、 Electronic copies may be obtained from http:/www.access.gpo.gov/.) DISTRIBUTION STATEMENT: All Rights Reserved. No Part of this publication may be reproduced without prior written permission from Parachute Industry Association. Additional copies may be purchased on-line from PIA Specifications and
8、Products at: . PIA-C-2003A 21 February 2013 Superseding PIA-C-2003 08 May 2008 PIA-C-2003A 2.3 Non-government publications. The following documents form a part of this document. AMERICAN ASSOCIATION OF TEXTILE COLORISTS AND CHEMISTS (AATCC) AATCC 8 - Colorfastness to Crocking; Crockmeter Method AATC
9、C 16 - Colorfastness to Light AATCC 20A - Fiber Analysis: Quantitative AATCC 61 - Colorfastness to Laundering: Accelerated AATCC 81 - pH of the Water-Extract from Wet Processed Textiles AATCC Evaluation Procedures: - 1 Gray Scale for Color Change - 2 Gray Scale for Staining - 8 AATCC 9 - Step Chroma
10、tic Transference Scale - 9 Visual 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.) ASTM INTERNATIONAL (ASTM) ASTM D
11、737 - Standard Test Method for Air Permeability of Textile Fabrics ASTM D 1424 - Standard Test Method for Tearing Strength of Fabrics by the Falling-Pendulum (Elmendorf-Type) Apparatus ASTM D 1776 - Standard Practice for Conditioning Textiles for Testing ASTM D 3775 - Standard Test Method for Warp (
12、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 the ASTM International,
13、100 Barr Harbor Drive, West Conshohoken, PA 19428-2959. Electronic copies may be obtained from www.astm.org.) AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ Z1.4 - Sampling procedures and Tables for Inspection by Attributes (Copies are available online at: www.asq.org or American Society for Quality, 6
14、00 North Plankinton, Milwaukee, WI 53203. 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document take precedence. Nothing in this document, however, supersedes
15、applicable laws and regulations unless a specific exemption has been obtained. Page 2 of 8 PIA-C-2003A 3. REQUIREMENTS 3.1 Material. 3.1.1 Yarn. The yarn shall be a blend of polyester and cotton fiber consisting of 65 5 percent polyester and the remaining percentage cotton or 50 5 percent polyester
16、and the remaining percentage cotton. 3.2 Color. The color of the finished cloth shall be as specified by the procuring activity (see 6.3). 3.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, and environmentally preferable material should be used to the maximum exte
17、nt possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.4 Dyeing. The use of dyes and compounds containing elementary sulfur capable of oxidation to sulfuric acid is prohibited. The dyestuffs sh
18、all be chosen and applied so that the dyed cloth shall show not more than a slight trace of labile sulfur when tested as specified in 4.2.3.2. 3.4.1 Visual Shade matching. When evaluated in accordance with 4.2.4, the color of the dyed fabric shall match the standard when viewed with sources simulati
19、ng artificial daylight D75 illuminant and shall be good match to the standard under incandescent lamplight. 3.4.2 Colorfastness. When tested as specified in 4.2.3, the finished fabric shall show fastness to light, accelerated weathering and crocking, as follows: Notes: 1/Rated using the AATCC Evalua
20、tion Procedure 1, Gray Scale for Color Change. 2/Rated using the AATCC Evaluation Procedure 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. 3.5 Physical requirements
21、. The cloth shall conform to the requirements specified in TABLE I when tested as specified in 4.2.3. (THIS SPACE LEFT INTENTIONALLY BLANK) Characteristic Rating, minimum Light (Fade) 1/3-4 Laundering (3 cycles): 2/Color Change Staining 3-4 3-4 3-4 Crocking (dry) 3/3.5 Page 3 of 8 PIA-C-2003A TABLE
22、I Physical requirements. Weight (minimum) oz./sq. yd. 3.5 Total yarns per inch (minimum) 128 Minimum number of ends per inch 1/68 Minimum number of picks per inch 1/60 Breaking strength pounds (minimum): Warp Filling 55 55 Tearing strength pounds (minimum): Warp Filling 4.0 3.5 Air Permeability: Cu.
23、 ft./minute/sq. ft.: Minimum Maximum 100 200 Note: 1/A minus tolerance of 6 yarns per inch for the 128 count, in either the warp or filling will be permitted, provided there is a total of not less than 128 yarns per inch respectively (warp and filling). 3.5.1 Weave. The weave shall be plain. 3.5.2 W
24、idth. The width of the cloth shall be as specified in the procurement document (see 6.3) and shall be the minimum width inclusive of selvages when fly-shuttle looms are used and exclusive of selvages and fringes when shuttleless looms are used. 3.6 Water-soluble material. The acid hydrolysable mater
25、ial shall not exceed 6.0 percent when tested as specified in 4.2.3. 3.7 pH. The pH value of the water extract of the dyed and finished cloth shall not be less than 5.5 or more than 9.0 when tested as specified in 4.2.3. 3.8 Length and put-up. Unless otherwise specified, the cloth shall be in a conti
26、nuous length, each not less than 40 yards and shall be put up in rolls or folded pieces as specified in 5.1. 3.9 Fiber identification. Each roll or folded piece shall be labeled, or ticketed for fiber content in accordance with the Textile Fiber Products Identification Act. 3.10 Workmanship. The fin
27、ished cloth shall conform to the quality established by this specification. The demerit points per 100 square yards shall not exceed the established maximum point value (see 4.2.2.1). 3.11 Date of manufacture. The date of manufacture is defined as the date (month and year) of the last manufacturing
28、process that affects the physical characteristics of the cloth. This does not include slitting, inspection or rewinding. 4. VERIFICATION 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspectio
29、n requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor Page 4 of 8 PIA-C-2003A may use their own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the procuring acti
30、vity. The procuring activity reserves the right to 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 Certificates of Compliance. Where Certificates of Compliance are subm
31、itted, the procuring activity reserves the right to check test such items to determine the validity of the certification. 4.2 Conformance inspection. Sampling for inspection shall be performed as specified in this document unless otherwise specified in the contract or order (see 6.3). 4.2.1 Componen
32、t and material inspection. In accordance with 4.1, components and materials shall be inspected in accordance with all the requirements of referenced specifications, drawings, and standards unless otherwise excluded, amended, modified, or qualified in this specification or applicable purchase documen
33、t. 4.2.2 End item inspection. 4.2.2.1 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 in the roll shall be examined. When the total yardage in the roll exceeds 100 yards, only
34、100 yards shall be examined. All defects, as defined in Section I of FED-STD-4, which are clearly noticeable at normal inspection distance (3 feet) shall be scored and assigned demerit points as listed in 4.2.2.1.1. No linear yard (increments of 1 yard on the measuring device of the inspection machi
35、ne) from any one roll within the sample shall be 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 exceed 30 points. The lot shall be unacceptable if the points p
36、er 100 square yards of two or more individual rolls or pieces exceed 45 points. If no individual roll exceeds the point level, the lot shall be accepted. If one roll exceeds the point level, a second sample of 20 rolls shall be examined only for individual roll quality. The lot shall be unacceptable
37、 if one or more rolls in the second sample exceed the point level. Point computation for lot quality 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 4.2.2.1.1 Demerit points
38、. Demerit points shall be assigned as follows: - For defects up to and including 3 inches in any dimension - one 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 poin
39、ts - For defects exceeding 9 inches in any dimension - four points The following defects, when present, shall be scored four points for each yard in which they occur: Page 5 of 8 PIA-C-2003A - Baggy, ridgy, or wavy cloth - Width less than specified - Poor dye penetration, mottled, streaky, or cloudy
40、 - Excessive nappiness. 4.2.2.2 Length examination. 4.2.2.2.1 Individual rolls. During the yard-by-yard examination, each roll in the sample shall be examined for length. Any roll found to be less than the minimum specified or more than 2 yards less than the length marked on the ticket shall be cons
41、idered a defect with respect to length. The lot shall be unacceptable if two or more rolls in the sample are defective in respect to length. 4.2.2.2.2 Total yardage in sample. The lot shall be unacceptable if the total of the actual lengths of rolls in the sample is less than the total of the length
42、s marked on the tickets. 4.2.3 End item testing. The cloth shall be tested for the characteristics listed in TABLE II. The methods of testing specified in TABLE II shall be followed. The physical and chemical values specified in Section 3, except where otherwise specified, apply to the results of th
43、e determinations made on a sample unit for test purposes as specified in the applicable test method. All test reports shall contain the individual values utilized in expressing the final result. The sample unit shall be 2 continuous yards full width of the finished cloth. The lot shall be unacceptab
44、le if one or more sample units fail to meet any requirement specified. Unless otherwise specified, testing shall be performed under standard conditions in accordance with ASTM D 1776. The sample size shall be as follows: 4.2.3.1 Visual shade matching. Evaluate the color of the dye cloth using AATCC
45、Evaluation Procedure 9, Option A, with sources simulating artificial daylight D75 illuminant with a color temperature of 7500 200K with illumination of 100 20 foot candles, and incandescent lamplight at 2856 200K. TABLE II End item tests. Characteristic Requirement reference Test Method Fiber conten
46、t 3.1.1 AATCC 20A Labile sulfur 3.4 4.2.3.2 Colorfastness to: Light Laundering (after 3 cycles) Crocking 3.4.2.1 3.4.2.1 3.4.2.1 AATCC 16 Opt 1 AATCC 61 3A AATCC 8 Weight 3.5 ASTM D 3776 Total yarns per inch 3.5 ASTM D 3775 Ends per inch 3.5 ASTM D 3775 Picks per inch 3.5 ASTM D 3775 Lot size yards
47、Sample size (sample units) 800 or less 2 801 up to and including 22,000 3 22,001 and over 5 Page 6 of 8 PIA-C-2003A TABLE II End item tests (contd). Breaking strength 3.5 ASTM D 5034 Tearing strength 3.5 ASTM D 1424 Air permeability 3.5 ASTM D 737 Weave 1/3.5.1 Visual Acid hydrolysable material 3.6
48、AATCC 20A pH 3.7 AATCC 81 Notes: 1/One determination per sample unit and the result reported as “pass” or “fail”. 4.2.3.2 Presence of labile sulfur. In the determination of labile sulfur in textiles with lead acetate, two 1.50 0.01 gram samples from each material submitted for evaluation shall be te
49、sted. Each of the two samples shall be cut into very small pieces and placed into separate test tubes. The samples shall be submersed in a stannous chloride solution that contains 100 grams stannous chloride crystals ACS in 100 milliliters of hydrochloric acid ACS (35 percent concentration) and 50 milliliters of distilled water. A filter paper wet out with a 5.0 percent lead acetate solution shall be placed over top of the test tube. The lead acetate solution contains 5.0 gr
