1、 The following commercial specification is adopted from the military documents. Initial and Revision A includes all known accepted revisions, amendments, notices, and Department of Defense (DoD) engineering changes previously developed for this item. Revision B and forward include changes adopted by
2、 DoD and Industry to reflect technology and design evolution. WEBBING, TEXTILE, ELASTIC 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 co
3、vers cotton and nylon elastic webbing. 1.2 Classification.The webbing shall be furnished in the following Types, Classes, and Widths as specified in TABLE I (see 6.2). 1.3 Type designation. The webbing shall be furnished in the following Types (see 6.2): Type I - Cotton fiber Type II - Nylon filamen
4、t 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 include documents cited in other sections of this specification nor is it recommended for additional information or as examples. While every effo
5、rt has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements 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 G
6、overnment publications form a part of this document. 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
7、20580-0001. Electronic copies may also be obtained from http:/www.access.gpo.gov/.) PIA-W-5664B 15 November 2010 Superseding PIA W 5664A 17 February 2000 DISTRIBUTION STATEMENT: All Rights Reserved. No Part of this publication may be reproduced without prior written permission from Parachute Industr
8、y Association. Additional copies may be purchased online from the PIA Store at: . PIA-W-5664B Page 2 of 13 2.3 Non-government publications. The following documents form a part of this document to the extent specified herein. AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND COLORISTS (AATCC) AATCC 8 - Co
9、lorfastness to Crocking; Crockmeter Method AATCC 15 - Colorfastness to Perspiration AATCC 16 - Colorfastness to Light AATCC 20 - Fiber Analysis: Qualitative AATCC 61 - Colorfastness to Laundering: Accelerated AATCC 81 - pH of the Water-Extract from Wet Processed Textiles AATCC 107 - Colorfastness to
10、 Water AATCC Evaluation Procedures: - 1, Gray Scale for Color Change - 2, Gray Scale for Staining - 8, AATCC 9 - Step Chromatic Transference Scale (Applications for copies should be addressed to the AATCC National Headquarters, P.O. Box 12215, Research Triangle Park, NC 27709-2215. Electronic copies
11、 may be obtained from www.aatcc.org.) AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ Z1.4 - Sampling Procedures and Tables for Inspection by Attributes (Applications for copies should be addressed to American Society for Quality, 600 North Plankinton Ave, Milwaukee, WI 53203. Electronic copies may be o
12、btained from www.asq.org.) ASTM INTERNATIONAL (ASTM) ASTM D 412 - Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers-Tension ASTM D 1776 - Standard Practice for Conditioning and Testing Textiles ASTM D 1777 - Standard Test Method for Thickness of Textile Materials ASTM D 3774 -
13、 Standard Test Method for Width of Textile Fabric ASTM D 3775 - Standard Test Method for Warp (End) Count and Filling (Pick) Count of Woven Fabrics ASTM D 3776 - Standard Test Methods for Mass Per Unit Area (Weight) of Fabric (Application for copies should be addressed to the ASTM International, 100
14、 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Electronic copies may be obtained from www.astm.org/.) 2.4 Revision levels of subsidiary documents. The Government and non-government publications listed in Section 2 shall be defined as subsidiary documents. Unless otherwise specified by the pro
15、curing activity, the revision level of the subsidiary documents shall be the latest revision level as listed in the Acquisition Streamlining and Standardization Information System (ASSIST) database located at: https:/assist.daps.dla.mil/quicksearch/. PIA-W-5664B Page 3 of 13 2.5 Order of precedence.
16、 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 First article. W
17、hen specified (see 6.2) in the contract or purchase order, a sample shall be subjected to first article inspection (see 6.3) in accordance with 4.2. 3.2 Standard. The dyed webbing shall match the standard for shade and appearance, unless otherwise indicated, and shall be equal to or better than the
18、standard with respect to all characteristics for which the standard is referenced (see 6.1). 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 Cotton yarn. The yarn used in the manufacture of the cotton elastic webbing shall be of a grade and staple length which will meet the requirements of this specificatio
20、n. Testing shall be as specified in 4.6 and 4.7.4 3.4.2 Nylon yarn. The yarn used in the manufacture of the nylon elastic webbing shall be a bright, high tenacity, light and heat resistant polyamide prepared from hexamethylene diamine and adipic acid and its derivatives. The yarn shall have a minimu
21、m melting point of 244 C (471F). The yarn shall not be bleached. Testing shall be as specified in 4.7.4 3.5 Physical requirements. (THIS SPACE LEFT INTENTIONALLY BLANK) PIA-W-5664B Page 4 of 13 TABLE I Physical requirements. 3.5.1 Weave construction. The weave for all Types and Classes may be suppli
22、ed in either shuttle or shuttleless loom construction, except Type I, Class 4 which shall be manufactured on a shuttleless loom. See 3.5.1.1 for additional construction requirements for Type I, Class 4 webbing. 3.5.1.1 Type I, Class 4. The webbing shall be a double plain weave and constructed as fol
23、lows: 3.6 Drift. The drift of the load on the webbing elongated and maintained at 50 percent elongation for 4 hours, shall be not more than 20 percent when tested as specified in 4.7.4. 3.7 Tension set 3.8 . After the webbing has been elongated and maintained at 50 percent elongation for 10 minutes
24、and then allowed to relax for 10 minutes, the webbing tension set (change in length of the sample) shall be not more than 5 percent when tested as specified in 4.7.4. Tension set after heat aging. After the webbing has been heat aged at 70 1C TYPE I Class Width (inches) Thickness range (inches) Ounc
25、es per linear yard (max., weight) To produce 50 percent elongation, load range at room temperature (pounds) 1 3/8 1/32 .016 - .046 0.28 1.15 - 3.25 1/2 1/16 .016 - .046 0.38 1.35 - 3.75 3/4 1/16 .016 - .046 0.53 1.80 - 5.00 7/8 1/16 .016 - .046 0.55 0.90 - 4.37 1 1/16 .016 - .046 0.73 3.00 - 5.50 1-
26、1/2 1/16 .016 - .046 1.00 5.00 - 7.00 2 1/16 .031 - .061 1.60 6.00 - 11.00 2-1/2 1/16 .031 - .061 2.00 8.00 - 12.00 2 1-1/2 1/16 .094 - .156 2.30 7.20 - 17.50 3 1-1/2 1/16 .094 - .156 2.35 15.30 - 31.25 4 1-1/2 1/16 .094 - .156 2.35 15.30 - 31.25 TYPE II 1 1 1/16 .030 - .060 0.80 3.00 - 6.00 1-1/2 1
27、/16 .030 - .060 1.20 4.00 - 7.50 2 1-1/2 1/16 .094 - .156 2.30 12.0 - 17.5 Warp yarn size Face and Back warp (min.) Binder yarn size Total binder yarns (min.) Filling yarn size Picks per inch Total rubber cords (min.) 12/2 117 24/2 or 30/2 18 24/2 or 30/2 74-88 40 PIA-W-5664B Page 5 of 13 (158 2F) f
28、or 7 days, and after at least 3 hours from the time of removal from the aging oven, it shall meet the tension set requirement when tested as specified in 4.7.4. 3.9 Low temperature elongation resistance. For Class 1 and 2 webbings, the load at 50 percent elongation at 21 2.8C (70 5F) shall be not le
29、ss than 20 percent of the load at 50 percent elongation at -40 2.8C (-40 5F) when tested as specified in 4.7.4. For Class 3 and 4 webbing the value shall be not less than 40 percent when tested as specified in 4.7.4. 3.10 pH. The pH value of the water extract of the dyed webbing shall be no less tha
30、n 5.5 nor more than 9.0 when tested as specified in 4.7.4. 3.11 Color. The color of Types I and II shall be as specified by the procuring activity or order (see 6.2). 3.11.1 Visual Shade Matching.The color of the dyed webbing shall match the standard when viewed using the AATCC Evaluation Procedure
31、9, Option A with sources simulating artificial daylight D75 illuminate with a color temperature of 7500 200K, with illumination of 100 20 foot candles, and shall be a good match to the standard under incandescent lamplight at 2856 200K. 3.11.2 Colorfastness. The dyed webbing shall show colorfastness
32、 to light, water, laundering, perspiration and crocking as follows: Notes: 1/Rated using the AATCC Evaluation Procedure 1, Gray Scale for Color Change. 2/ Rated using the AATCC Evaluation Procedure 2, Gray Scale for Staining. 3/ Rated using the AATCC Evaluation Procedure 8, AATCC 9 - Step Chromatic
33、Transference Scale. 3.12 Length and put-up for Government procurements only. Unless otherwise specified, when the webbing furnished is one inch or less in width, it shall be furnished on fiberboard spools containing 120 to 130 yards with not more than 6 pieces per roll. No piece shall be less than 2
34、 yards in length. When the webbing furnished is over one inch in width, it shall be furnished on fiberboard spools containing 45 to 55 yards with not more than 3 pieces per roll. Characteristic Rating (minimum) Light (Fade) 1/ : Color change 3-4 Water 1/, 2/ : Color stain3-4 Color change 3-4 Launder
35、ing 1/, 2/ :Color stain Color change 3-4 3-4 Perspiration 1/, 2/ : Color stain 3-4 Color change 3-4 Crocking 3/ : Wet & dry Wet (Black Only) 3-4 2-3 Testing shall be as specified in 4.7.4 PIA-W-5664B Page 6 of 13 No piece shall be less than 10 yards in length. All ends shall be joined together eithe
36、r by pinning or sewing. 3.13 Fiber identification. When directed in the procurement document or purchase order, each spool of webbing shall be labeled, or ticketed, for fiber content in accordance with the Textile Fiber Products Identification Act. 3.14 Workmanship. The finished webbing shall confor
37、m to the quality of product established by this specification. The occurrence of defects shall not exceed the applicable acceptable quality levels. 3.15 Date of manufacture. When required by the procurement document, the textile manufacturer shall properly identify the age of the textile materials b
38、y placing a tag on the finished goods, or label the container, identifying the specification to which the material is manufactured, the lot number and the date of manufacture. The date of manufacture is defined as the date (month and year) of the last manufacturing process that affects the physical
39、characteristics of the material. 4. VERIFICATION 4.1 Classification of inspection. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2) b. Conformance inspection (see 4.3). 4.2 First article inspection. The first article, submitted in accordan
40、ce with 3.1, shall be inspected as specified in 4.3 through 4.7 for compliance with design, construction, workmanship and dimensional requirements. 4.3 Conformance inspection. Sampling for inspection shall be performed as specified in ANSI/ASQ Z1.4 - Sampling Procedures and Tables for Inspection of
41、Attributes unless otherwise specified in the contract or order. 4.3.1 Component and material inspection. In accordance with 4.1 above, components and materials shall be inspected in accordance with all the requirements of referenced specifications, drawings, and standards unless otherwise excluded,
42、amended, modified, or qualified in this specification or applicable procurement documents. 4.4 Responsibility of compliance. All items shall meet all requirements of Sections 3 and 4. The inspection set forth in this specification shall become a part of the contractors overall inspection system or q
43、uality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies, submitted to the Government for acceptance, comply with all requirements of the contract. Sampling in quality conformance
44、does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.5 Certificates of Compliance. Where Certificates of Compliance are submitted in accordance with TABLES II and V, they shall contain verifiable actu
45、al test and inspection data. The Government reserves the right to inspect such items to determine the validity of the certification. PIA-W-5664B Page 7 of 13 4.6 Component certification for Type I, Class 4. A Certificate of Compliance may be acceptable as evidence that the characteristics listed in
46、TABLE II conform to the specified requirements. TABLE II Component certification. 4.7 End item examination. 4.7.1 Yard-by-yard examination. The required yardage of each spool shall be inspected on both sides and visual defects classified as listed in TABLE III. All defects found shall be counted reg
47、ardless of their proximity to each other, except where two or more defects represent a single local condition of the 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.
48、 The lot size shall be expressed in yards. The sample unit shall be 1 linear yard. The sample size shall be in accordance with inspection level III in ANSI/ASQ Z1.4, Table I: Sample size code letters. The Acceptance Quality Limit (AQL), expressed in terms of defects per hundred units, shall be 1.5 f
49、or major defects and 4.0 for total (major and minor combined) defects, see ANSI/ASQ Z1.4 Table II-A, Single sampling plan for normal inspection- Master Table. The number of spools from which the sample yardage is to be selected shall be in accordance with TABLE IV. The sample yardage shall be apportioned equally among the selected spools. TABLE III Classification of defects. Examine Defects Major Minor Abrasion mark Resulting in rupture of individual yarns or plies, distortion in the orienta
