1、 The following commercial specification is originally 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. Revision B and forward include changes adopted to r
2、eflect technology and design evolution. _ WEBBING, TEXTILE, WOVEN NYLON IMPREGNATED 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 document covers resi
3、n or latex impregnated woven nylon textile tape and webbing. 1.2 Classification. The treated tape and webbing shall be one of the following classes as specified (see 6.2): Class R - Resin impregnated (tape and webbing) Class L - Latex impregnated (webbing only). 2. APPLICABLE DOCUMENTS 2.1 General.
4、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 or recommended for additional information or as examples. While every effort has been made to ensure the completeness of
5、 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 Government publication forms a part of this doc
6、ument. 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. Electronic copies may also be obtai
7、ned from http:/www.access.gpo.gov/.) PIA-W-27265D 19 June 2013 Superseding PIA-W-27265C 14 December 2009 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
8、 on-line from PIA Specification and Products at: . Copyright Protected: Do Not Copy!PIA-W-27265D MILITARY MIL-W-17337 - Webbing, Textile, Woven Nylon 2.3 Non-government publications. The following documents form a part of this document. AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ Z1.4 - Sampling Pro
9、cedures and Tables for Inspection by Attributes (Copies are available online at: www.asq.org or the American Society For Quality, 600 North Plankinton Avenue, Milwaukee, WI 53203. Electronic copies may be obtained from www.access.gpo.gov/.) ASTM INTERNATIONAL (ASTM) ASTM D 1388 - Standard Test Metho
10、d for Stiffness of Fabrics ASTM D 1776 - Standard Practice for Conditioning and Testing Textiles ASTM D 1777 - Standard Test Method for Thickness of Textile Materials ASTM D 3776 - Standard Test Method for Mass per Unit Area (Weight) of Fabrics ASTM D 5427 - Standard Practice for Accelerated Aging o
11、f Inflatable Restraint Fabrics ASTM D 6770 - Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method) (Application for copies should be addressed to ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Electronic copies may be obtained from www.astm.or
12、g.) AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND COLORISTS (AATCC) AATCC 16 - Colorfastness to Light AATCC 61 - Colorfastness to Laundering Accelerated AATCC 81 - pH of Water-Extract from Wet Processed Textiles AATCC Evaluation Procedures: - 1 Gray Scale for Color Change - 2 Gray Scale for Staining
13、- 8 AATCC 9 - Step Chromatic Transference Scale - 9 Visual Assessment of Color Difference of Textiles (Applications for copies of referenced documents should be addressed to AATCC National Headquarters, P.O. Box 12215, Research Triangle Park, NC 27709-2215. Electronic copies may be obtained from www
14、.aatcc.org.) PARACHUTE INDUSTRY ASSOCIATION (PIA) PIA-TEST METHOD-4108 - STRENGTH AND ELONGATION, BREAKING; TEXTILE WEBBING, TAPE AND BRAIDED ITEMS Page 2 of 15 Copyright Protected: Do Not Copy!PIA-W-27265D PIA-W-4088 - WEBBING, TEXTILE, WOVEN NYLON PIA-T-5038 - TAPE, TEXTILE AND WEBBING, TEXTILE, R
15、EINFORCING, NYLON (Electronic copies may be obtained from .) 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 takes precedence. Nothing in this document h
16、owever, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Standard. Where applicable, the dyed tape and webbing shall match the standard for shade and appearance and shall, unless otherwise indicated, be equal to or better than the standard
17、 with respect to all characteristics for which the standard is referenced (see 6.1). 3.2 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.2 and 6.2). 3.3 Recycled, recovered, or environmentally preferable materials. Recyc
18、led, recovered, or environmentally preferable materials should 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. 3.4 Material (see 3.3). The untreated nylon tape a
19、nd webbing to be impregnated shall conform to the type, class, width, length and put up requirements and color of PIA-W-4088, PIA-T-5038 or MIL-W-17337 as specified (see 6.2). 3.4.1 Class R-resin impregnated. The Class R tape and webbing shall be impregnated with polyvinyl butyral plasticized with b
20、utyl ricinoleate or an approved resin finish (see 6.3). The resin shall be applied from a water dispersion, dried and cured to form a firm adherent and even deposit or coating on the yarns of the tapes and webbings. Curing of resin impregnated webbing has been accomplished in the temperature range o
21、f 240-260F. 3.4.1.1 Breaking strength, after treatment. The breaking strength of the treated Class R tape and webbing shall be no less than the applicable minimum requirement specified in PIA-W-4088, PIA-T-5038 or MIL-W-17337 when tested as specified in 4.4.4. 3.4.1.2 Breaking strength, resistance t
22、o abrasion. The breaking strength, after abrasion, for all types of treated Class R webbing, except Type XVIII of PIA-W-4088, shall be no less than 80 percent of its breaking strength after treatment when tested as specified in 4.4.4. The breaking strength, after abrasion, of the Type XVIII treated
23、Class R webbing shall be no less than 75 percent of its breaking strength after treatment when tested as specified in 4.4.4. PIA-T-5038 tapes and webbings shall not be tested for abrasion resistance. 3.4.1.3 Weight. The weight of the treated Class R tape and webbing shall not exceed the maximum spec
24、ified for the untreated tape and webbing, plus 10 percent of the specified untreated weight when tested as specified in 4.4.4. Page 3 of 15 Copyright Protected: Do Not Copy!PIA-W-27265D 3.4.1.4 Thickness. The thickness of the treated Class R tape and webbing shall be no more than the maximum specifi
25、ed for the untreated tape, and webbing and no less than the minimum specified for the untreated tape and webbing, with a minus tolerance of 12 percent when tested as specified in 4.4.4. 3.4.1.5 Extractable matter. The extractable matter in Methyl Ethyl Ketone of Polyvinyl Butyral treated Class R tap
26、e and webbing for all types, except Type XVIII of PIA-W-4088, shall not exceed 8.5 percent by weight and for Type XVIII shall not exceed 4.5 percent. When an approved finish is used to treat the Class R tape and webbing, the solids content of the finish for all types, except Type XVIII of PIA-W-4088
27、, shall not exceed 8.5 percent by weight and for the Type XVIII shall not exceed 4.5 percent. Testing shall be as specified in 4.4.4. 3.4.1.6 pH. The pH value of the water extract of the treated tape and webbing shall be no less than 5.5 nor more than 9.0 when tested as specified in 4.4.4. 3.4.1.7 C
28、urvature. The tape and webbing shall show no more lateral curvature than 1/4 inch within a yard when tested as specified in 4.4.4 and 4.5.5 (see FIGURE 1). 3.4.1.8 Elongation. The treated PIA-T-5038 tapes and webbing elongation shall be no less than the applicable minimum requirement as specified in
29、 PIA-T-5038 when tested as specified in 4.4.4. 3.4.2 Class L-latex impregnated. The Class L webbing shall be impregnated with natural rubber latex containing the necessary curatives and anti-oxidants or an approved finish (see 6.3) to meet the physical properties specified herein. Also acceptable is
30、 a synthetic polyurethane elastomeric dispersion, NeoRez 1017 (see 6.3). 3.4.2.1 Breaking strength, after treatment. The breaking strength of the treated Class L webbing shall be no less than the applicable minimum requirement specified in PIA-W-4088 or MIL-W-17337 when tested as specified in 4.4.4.
31、 3.4.2.2 Breaking strength, resistance to abrasion. The breaking strength, after abrasion for all types of treated Class L webbing of PIA-W-4088 shall be no less than 80 percent of its breaking strength after treatment when tested as specified in 4.4.4. 3.4.2.3 Breaking strength, after accelerated a
32、ging. The breaking strength of the treated Class L webbing after accelerated aging shall be no less than 95 percent of the breaking strength after treatment, when tested as specified in 4.4.4. In addition, the specimens after accelerated aging shall display no evidence of stickiness or gumming, when
33、 tested as specified in 4.4.4. 3.4.2.4 Weight. The weight of the treated Class L webbing shall not exceed the maximum specified for the untreated webbing, plus 10 percent of the specified untreated weight, when tested as specified in 4.4.4. 3.4.2.5 Thickness. The thickness of the treated Class L web
34、bing shall be no more than the maximum specified for the untreated webbing and no less than the minimum specified for the untreated webbing, with a minus tolerance of 12 percent, when tested as specified in 4.4.4. 3.4.2.6 Stiffness. 3.4.2.6.1 At -65F. The Class L treated webbing shall be subjected t
35、o a temperature of Page 4 of 15 Copyright Protected: Do Not Copy!PIA-W-27265D -65 2F and compared for stiffness to a specimen tested at standard conditions, and the results obtained shall not be more than three times greater than the results obtained at standard conditions when tested as specified i
36、n 4.4.4. 3.4.2.6.2 At -65F, after accelerated aging. After accelerated aging the Class L treated webbing shall be tested for stiffness as specified in 4.4.4. The results shall be compared to that of a treated but unaged specimen similarly tested and shall vary not more than 20 percent, when tested a
37、s specified in 4.4.4. 3.4.2.7 Stickiness and Gumming. The Class L treated webbing shall show acceptable stickiness and gumming when tested as specified in 4.4.4. 3.4.2.8 pH. The pH value of the water extract of the treated webbing shall be no less than 5.5 nor more than 9.0 when tested as specified
38、in 4.4.4. 3.4.2.9 Curvature. The tape and webbing shall show no more lateral curvature than 1/4 inch within a yard when tested as specified in 4.4.4 and 4.5.5 (see FIGURE 1). 3.5 Color. When undyed tape or webbing is specified, the color of the tape or webbing may deviate from the natural state to t
39、hat degree imposed by the color of the treating agent used. When dyed tape or webbing is specified, the dyed untreated tape or webbing shall match the applicable shade standard (see 6.1 and 6.2), and the shade imparted by the treatment shall be acceptable. 3.5.1 Visual shade matching. When evaluated
40、 in accordance with 4.7, the color of the dyed tape or webbing shall match the standard with sources simulating artificial daylight and shall be a good match to the standard under incandescent lamplight. 3.5.2 Colorfastness. When tested as specified in 4.4.4, the tape or webbing shall show fastness
41、to light, laundering 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 1, Gray Scale for Color Change and AATCC Evaluation Procedure 2, Gray Scale for Staining. 3.6 Length and put-up. Unless other
42、wise specified (see 6.2) the length and put-up shall be as specified in PIA-W-4088, PIA-T-5038 or MIL-W-17337, as applicable. 3.7 Identification tickets. Each roll or spool shall have a ticket attached with not finer than 5-ply cotton string doubled to not less than 6 inches long. The tickets shall
43、be made of paperboard not less than 0.015 inch in thickness and the color shall be manila or light in intensity Characteristic Rating, minimum Light (fade) 1/3-4 Laundering: 2/Color change Staining 2-3 2-3 Testing shall be specified in 4.4.4 Page 5 of 15 Copyright Protected: Do Not Copy!PIA-W-27265D
44、 to permit easy reading of printed, stamped or typed markings. The use of handwritten entries is prohibited. The ticket shall have clipped corners at the end where a reinforcing patch (with or without a metal eyelet) is firmly affixed for attaching the tying string. The ticket shall be legibly print
45、ed with water insoluble ink with the following information: Stock number Nomenclature Specification number Yardage Contract number and date of manufacture (month and year) Contractors name Name of contracting agency. When webbing is not procured directly by the Government, the above information shal
46、l appear on the container and in which case roll or spool tickets are not required. 3.8 Fiber identification. When directed in the procurement document or purchase order, each roll or spool of webbing shall be labeled or ticketed for fiber content in accordance with the Rules and Regulations Under t
47、he Textile Fiber Products Identification Act. 3.9 Workmanship. The treated tape and webbing shall conform to the quality of product established by this specification. The occurrence of defects shall not exceed the applicable acceptable quality levels. 3.10 Date of Manufacture (see 6.2). When require
48、d by the procurement document, the textile manufacturer shall properly identify the age of the textile materials by placing a tag on the treated goods or label on the containers, identifying the specification to which the material is manufactured, the lot number and the date of manufacture. The date
49、 of manufacture is defined as the date (month and year) of the last manufacturing process that affects the physical 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
