1、 The following commercial specification is an original Parachute Industry Association specification. _ CLOTH, COATED, PARACHUTE, NYLON The Parachute Industry Association makes this document available for use by Industry and Government organizations that wish to apply this specification to their prod
2、ucts. 1. SCOPE 1.1 Scope. This specification covers two types of coated nylon cloth with zero porosity for fabrication of parachutes. 1.2 Type designation. The nylon cloth shall be of the following two types and weaves as specified (see 6.2): Type I - 1.27 to 1.39 oz./sq. yd. (45 2g/sq. m) with 0 cf
3、m air permeability having a rip stop weave Type II - 1.12 to 1.24 oz./sq. yd. (40 2g/sq. m) with 0 cfm air permeability having a honeycomb weave. 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 i
4、nclude 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 requirements of the documents cited
5、 in Sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government publications. 2.2.1 Government publication. The following Government publication forms a part of this document. STANDARDS FEDERAL FED-STD- 595 - Colors Used in Government Procurements A-A-59826 - Thread, Nylon
6、 PIA-C-2004 07 July 2014 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 Standards at: . Copyright Protected: Do Not
7、 Copy!PIA-C-2004 (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 obta
8、ined from 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 2
9、0580-0001. Electronic copies may also be obtained from http:/www.access.gpo.gov/.) 2.3 Non-government publications. The following documents form a part of this document. AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND COLORISTS (AATCC) AATCC 8 - Colorfastness to Crocking: Crockmeter Method AATCC 16 - C
10、olorfastness to Light AATCC 81 - pH of the Water-Extract from Wet Processed Textiles 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 T
11、ransference Scale - 9 Visual Assessment of Color Difference Textiles. (Applications 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 .) AMERICAN SOCIETY FOR QUALITY (ASQ) ANS
12、I/ASQ Z1.4 - Sampling Procedures and Tables for Inspection by Attributes (Copies are available online at: www.asq.org or American Society For Quality, 600 North Plankinton Avenue, Milwaukee, WI 53203.) ASTM INTERNATIONAL (ASTM) ASTM D 276 - Standard Test Methods for Identification of Fibers in Texti
13、les ASTM D 434 - Standard Test Method for Resistance to Slippage of Yarns in Woven Fabrics Using a Standard Seam Page 2 of 23 Copyright Protected: Do Not Copy!PIA-C-2004 ASTM D 629 - Standard Test Method for Quantitative Analysis of Textiles ASTM D 737 - Standard Test Method for Air Permeability of
14、Textile Fabrics ASTM D 751 - Standard Test Methods for Coated Fabrics ASTM D 1776 - Standard Practice for Conditioning and Testing Textiles ASTM D 1777 - Standard Test Method for Thickness of Textile Materials ASTM D 2261 - Standard Test Method for Tearing Strength of Fabrics by the Tongue (Single R
15、ip) Procedure (Constant-Rate-of-Extension Tensile Testing Machine) ASTM D 3774 - Standard Test Method for Width of Textile Fabric ASTM D 3775 - Standard Test Method for Warp (End) and Filling (Pick) Count of Woven Fabrics ASTM D 3776 - Standard Test Method for Mass Per Unit Area (Weight) of Fabric A
16、STM D 3882 - Standard Test Method for Bow and Skew in Woven and Knitted Fabrics ASTM D 5035 - Standard Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method) Sources ASTM D 6193 - Standard Practice for Stitches and Seams ASTM G 151 - Standard Practice for Exposing NonMetalli
17、c Materials in Accelerated Test Devices That Use Laboratory Light Sources ASTM G 155 - Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials (Application for copies should be addressed to the ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA
18、19428-2959. Electronic copies may be obtained from www.astm.org/.) PARACHUTE INDUSTRY ASSOCIATION (PIA) PIA-STD-503 - PERMANENCE OF SET AND SHRINKAGE IN PARACHUTE FABRICS (Electronic copies may be obtained from .) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the eve
19、nt 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 Yarn. The nylon yarn used i
20、n the manufacture of all parachute fabric shall be continuous multifilament, bright, high tenacity polyamide 6,6. The yarn shall not be bleached in any manner or process. 3.1.1 Recycled, recovered or environmentally preferable materials. Recycled, recovered and environmentally preferable material sh
21、ould be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. Page 3 of 23 Copyright Protected: Do Not Copy!PIA-C-2004 3.2 Yarn twist. Any yarn twist (warp and filling) i
22、s acceptable, provided all requirements for this specification are met. 3.3 Weave. The weave patterns for Type I and Type II cloth shall be in accordance with FIGURES 1 and 2 respectively. 3.4 Standard. The finished cloth shall match the standard for shade and appearance and shall be equal to or bet
23、ter than the standard with respect to all characteristics for which the standard is referenced (see 6.3). 3.5 Physical and chemical properties. The physical and chemical properties of the finished cloth shall conform to TABLE I and the following subparagraphs thereto. The frequency of testing shall
24、be 5 tests across the width of the delivered fabric. The test methods in TABLE IV shall be followed. TABLE I Physical requirements. Characteristics Type I Type II Weight, ounces/square yard (maximum) 1.39 1.24 Yarns per inch (warp and filling) (minimum) 124 124 Breaking strength 1/, pounds/inch (war
25、p and filling) (minimum) 47 47 Elongation 1/, percent (warp and filling) (minimum) 25 25 Tear strength 1/, pounds (warp and filling) (minimum) 12 12 Thickness, inches (maximum) 0.003 0.003 Air permeability, cubic feet/minute/square foot 0 0 Note: 1/All individual values shall meet the specified mini
26、mum requirements. 3.6 Finish. The cloth shall be scoured to remove sizing and other contaminants at a temperature which will not cause fixation of same into cloth or result in permanent setting of the cloth. The cloth shall be heat-set and may be coated as required to control the air permeability to
27、 the level required by this specification. The cloth covered by this specification shall not be bleached, resinated or treated with oxalic or phosphoric acid in any manner or process (see 6.4). 3.6.1. Permanence of set. When the cloth is subjected to the test specified in 4.9.1, the permanence of th
28、e cloth set shall be as follows. 3.6.1.1 Air permeability. The average of air permeability readings taken after the testing shall be within 15 percent of the average of the readings taken before testing. The air permeability readings for Types I and II cloth shall be 0 ft3/min/ft2after testing as sp
29、ecified in TABLE IV. 3.6.1.2 Shrinkage. The cloth shrinkage measured after testing shall not exceed 3 percent in the warp and 2 percent in the filling direction. Page 4 of 23 Copyright Protected: Do Not Copy!PIA-C-2004 3.6.2 Thickness. The thickness of the Types I and II cloth shall not exceed 0.003
30、 inches after testing as specified in TABLE IV. 3.6.3 Coating. The Types I and II finished cloth shall be treated with silicone finish so applied that it is evenly distributed on the cloth. The coating shall not cause any adhesion between the cloth layers at elevated temperatures when tested as spec
31、ified in TABLE IV. 3.6.4 Water-soluble material. The water-soluble material of the finished cloth shall not exceed 2 percent, when tested as specified in TABLE IV. 3.6.5 pH. The pH value of the finished cloth shall not be less than 5.5 or more than 9.0 when tested as specified in TABLE IV. 3.6.6 Lig
32、ht and heat resistance. The cloth shall not lose more than 25 percent of its original strength when tested in accordance with 4.9.2. 3.6.7 Seam slippage. The load required to separate the seam shall be not less than 10 pounds in either the warp or filling directions, when tested in accordance with 4
33、.9.4. 3.7 Color. The color of the finished cloth and its referenced standard shall be as specified by the procuring activity (see 6.2). 3.7.1 Dyeing. When dyed fabric is required, the fabric shall be yarn or piece dyed. 3.7.2 Visual shade matching. When evaluated in accordance with 4.9.5, the color
34、of the dyed fabric shall match the standard when viewed with sources simulating artificial daylight, and shall be a good match to the standard under incandescent lamplight. 3.7.3 Colorfastness. When tested as specified in 4.5, the finished fabric shall show fastness to light and crocking as follows:
35、 Notes: 1/Rating using the AATCC Evaluation Procedure 1, Gray Scale for Color Change. 2/Rating using the AATCC Evaluation Procedure 8 and AATCC 9 Step Chromatic Transference Scale. 3.8 Dimension. 3.8.1 Width. Unless otherwise specified, the width of the finished fabric shall be at least 59 inches. T
36、he acceptable width shall be inclusive of the selvages but exclusive of fringed ends produced on shuttleless looms during weaving (see 6.2). The selvage shall be hot slit and sealed against raveling, unless otherwise specified. Characteristic Rating, minimum Light (Fade) 1/3-4 Crocking: 2/ Dry Wet 3
37、.5 3.5 Page 5 of 23 Copyright Protected: Do Not Copy!PIA-C-2004 3.8.2 Length and put up. Unless otherwise specified a shippers roll shall be a minimum of 100 yards with a minimum piece size of 50 yards. A shippers roll shall have a maximum of two splices with no more than 10 percent of the yards ord
38、ered containing splices. 3.8.3 Bias (skew) and bow in fabric. Bias (skew) and bow shall be measured according to ASTM D 3882. Requirements shall be as listed in TABLE V Classification of Defects. 3.9 Age. The cloth shall not be more than 3 years old from the date of manufacture to the date of fabric
39、ation of parachute assemblies. 3.9.1 Date of manufacture. The date of manufacture is defined as the date (month and year) of the last manufacturing processing that affects the physical characteristics of the cloth. This would not include slitting, inspection or rewinding. 3.10 Identification. 3.10.1
40、 Identification of fiber. Each roll of the finished fabric shall be labeled or ticketed and invoiced for fiber content in accordance with the Rules and Regulations Under the Textile Fiber Products Identification Act. 3.10.2 Identification of product. Each roll of finished cloth shall be marked for i
41、dentification in accordance with good commercial practice. In addition, each piece of cloth in each roll shall be clearly and legibly marked with the finishers roll number or code, and each roll shall have attached a durable tag on which the finishers roll number or code is listed. The date of manuf
42、acture (see 3.9.1) of the cloth shall be included on the tag attached to each roll. 3.11 Workmanship. The finished cloth shall be clean and evenly woven and shall conform to the quality and grade of product established by this specification, and the occurrence of defects shall not exceed the applica
43、ble Acceptance Quality Limit. The finished cloth shall not show spottiness or be off shade of the standard range. The finished cloth shall not have an objectionable odor (Normal residual odor of chemicals commonly used shall not be regarded as objectionable.). 3.12 First article. When specified (see
44、 6.2), a sample representative of the production quality shall be subjected to the first article inspection in accordance with 4.3. 4. VERIFICATION 4.1 Classification for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of al
45、l 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 performance of the inspection requirements specified herein, unless disapproved by the proc
46、uring activity. 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 Responsibility for compliance. All items shall meet all req
47、uirements of Sections 3, 4 and 5. The inspections set forth in this specification shall become a part of the contractors Page 6 of 23 Copyright Protected: Do Not Copy!PIA-C-2004 overall inspection system or quality program. The absence of any inspection requirements in the specification shall not re
48、lieve 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 practice to ascertain conformance to the re
49、quirements, 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 Certification of Compliance. A Certificate of Compliance shall be prepared for each lot of material offered for acceptance (see 4.5.1). The certificate shall include all quantitative data resulting from specified chemical and mechanical tests. Qualitative results of
