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. TAPE AND WEBBING, TEXTILE, WOVEN REINFORCING, COTTON 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 f
3、ive types of woven cotton reinforcing textile tape and webbing intended for use in the manufacture of aeronautical equipment. 1.2 Classification. The tape and webbing shall be of the following types, as specified (see 6.2). Type I - Plain weave Type II - Double herringbone weave Type III - Twill wea
4、ve Type V - Plain (transverse cord) weave Type VI - Non-elastic 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 include documents cited in other sections of this specification or recommend
5、ed 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 documents cited in Sections 3 and 4 of this specification, whether or not they are listed. 2.2 Governmen
6、t publications. 2.2.1 Government publications. The following Government publication forms a part of this document. FEDERAL TRADE COMMISSION (FTC) 16 CFR303 - Rules and Regulations Under the Textile Fiber Products Identification Act PIA-T-5661D 29 June 2015 Superseding PIA-T-5661C 01 December 2011 DI
7、STRIBUTION 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 Products at: . Copyright Protected: Do Not Copy!PIA-T-5661D Page 2 of
8、17 (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 obtained from http:/www.access.gpo.gov/.) 2.3 Non-Government publications. The following documents form a part of this documen
9、t. 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 from the American Society For Quality, 600 North Plankinton, Milwaukee, WI 53203.) ASTM INTERNATIONAL (ASTM) ASTM D1776 - Standard Practic
10、e for Conditioning and Testing Textiles ASTM D3774 - Standard Test Method for Width of Textile Fabric ASTM D3775 - Standard Test Method for Warp (End) Count and Filling (Pick) Count of Woven Fabric ASTM D3776 - Standard Test Method for Mass Per Unit Area (Weight) of Fabric (Application for copies sh
11、ould be obtained from the ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19426-2959. Electronic copies may be obtained from www.astm.org/.) AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND COLORISTS (AATCC) AATCC 8 - Colorfastness to Crocking; Crockmeter Method AATCC 16.2 - Colorfastne
12、ss to Light: Carbon-Arc AATCC 16.3 - Colorfastness to Light: Xenon-Arc AATCC 81 - pH of the Water-Extract from Wet Processed Textiles AATCC 106 - Colorfastness to Water: Sea AATCC 107 - Colorfastness to Water (Applications for copies of referenced documents should be addressed to the AATCC National
13、Headquarters, P.O. Box 12215, Research Triangle Park, NC 27709-2215. Electronic copies may be obtained from www.aatcc.org.) PARACHUTE INDUSTRY ASSOCIATION (PIA) PIA-TEST METHOD-4108 - STRENGTH AND ELONGATION, BREAKING; TEXTILE WEBBING, TAPE AND BRAIDED ITEMS (Electronic copies may be obtained from .
14、) 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 Copyright Protected: Do Not Copy!PIA-T-5661D Page 3 of 17 document takes precedence. Nothing in this document, h
15、owever, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample representative of the production quality shall be submitted for first article inspection in accordance with 4.2. 3.2 Materials. The
16、tape and webbing shall be made from carded or combed yarns evenly spun from cotton of a grade and staple length that will produce a material meeting the requirements specified herein. 3.3 Weave. 3.3.1 Type I. The weave of Type I shall be plain (1 up and 1 down). 3.3.2 Type II. The weave of Type II s
17、hall be that commercially designated as 2 up, 2 down herringbone twill, having 3 reversals of twill, 1 at the center and 1 on each side of the center midway between the center and each edge. The tape or webbing shall be made with 2 ends weaving as one, or all ends weaving singly in the warp. 3.3.3 T
18、ype III. The weave of Type III shall be a 2 up and 2 down twill with reversal at 1/4 and 3/4 of the width. 3.3.4 Type V. The weave of Type V shall be plain with 2 warp yarns weaving as 1, except that at the selvage there shall be 3 warp yarns weaving singly. 3.3.5 Type VI. The weave of Type VI shall
19、 be what is commercially known as “non- elastic” and shall be in accordance with FIGURE 1. The ground and binder warp ends shall be 2 ply. The stuffer warp ends shall be 5 ply. The filling yarn shall be evenly distributed between the face and back of the tape and webbing. The 1 inch shall contain 24
20、 ends in each selvage or 12 ends in each selvage. 3.3.6 Filling yarn. The weave for all types shall be with one filling yarn per shed when a shuttle loom is used. The weave for all types shall be with two filling yarns per shed when a shuttleless loom is used (see 6.2). 3.4 Construction and physical
21、 properties. The construction and physical properties of the tapes and webbings shall be as specified in TABLE I. When latch type shuttleless looms are utilized, the filling yarn shall traverse the full width of the tape and shall be held at the edge by an extra catch-cord end interlacing with the f
22、illing yarn, in a method depicted in FIGURE 2. When bobbin type shuttleless looms are utilized, interlacing of the catch-cord and filling shall occur within the selvage area before the first binder end (FIGURE 3). 3.5 Extractable matter. The natural color tape and webbing shall contain no more than
23、5.0 percent methyl-ethyl ketone extractable matter, and the dyed tape and webbing shall contain no more than 4.0 percent methyl-ethyl ketone extractable matter, when tested as specified in 4.5. 3.6 Acidity (pH). The water extract of the tape and webbing shall have a pH of 5.5 to 9.0 when tested as s
24、pecified in TABLE IV. Copyright Protected: Do Not Copy!PIA-T-5661D Page 4 of 17 TABLE I Construction and physical properties Type Width inch 1/32 Weight oz./ linear yd., maximum Yarn ply minimum 1/Total warp ends, minimum Picks/inch minimum shuttle loom Picks/inch minimum shuttleless loom Breaking s
25、trength lbs. minimum 2/Warp Filling I 1/4 0.11 4 2 7 20 16 80 3/8 0.15 4 2 10 20 16 120 1/2 0.22 4 2 14 20 16 150 5/8 0.28 4 2 18 20 16 170 3/4 0.33 4 2 22 20 16 200 1 0.47 4 2 30 20 16 250 II 1/2 0.15 2 2 142 48 32 110 3/4 0.22 2 2 212 48 32 165 1 0.29 2 2 284 48 32 220 1-1/4 0.36 2 2 356 48 32 275
26、 1-1/2 0.43 2 2 426 48 32 330 1-3/4 0.50 2 2 496 48 32 375 2 0.57 2 2 568 48 32 425 III 1/2 0.10 2 1 64 60 45 45 5/8 0.12 2 1 85 60 45 55 3/4 0.14 3/ 2 1 96 60 45 75 V 1 0.65 4 4 48 16 15 350 2 1.30 4 4 96 16 15 650 Ground Binder Stuffer VI 5/8 0.23 See 3.3.5 2 95 22 37 46 32 80 1 0.98 See 3.3.5 2 1
27、12 30 31 52 32 375 Notes: 1/For suggested yarn numbers (see 6.3). 2/All individual readings shall meet or exceed the minimum requirements.3/ For Type III, 3/4 inch width ONLY, if 60/2 filling yarn number shuttleless loom (see TABLE V) is not readily available, a substitute of 40/2 filling yarn numbe
28、r shuttleless loom can be used and the weight (oz/linear yd.) maximum shall be 0.19. 3.7 Color. Unless otherwise specified by the procuring activity, the color for all types of tape and webbing shall be natural (unbleached). 3.7.1 Visual shade matching. When evaluated in accordance with 4.6.3, the c
29、olor of the dyed tape and webbing shall match the standard with sources simulating artificial daylight and shall be a good match to the standard sample under incandescent lamplight. 3.7.2 Colorfastness to light. PIA has adopted AATCC 16.3 as an acceptable test method to AATCC 16.2 for the testing of
30、 Narrow Fabrics using Xenon (see TABLE IV). 3.7.3 Colorfastness. The dyed tape and webbing shall show colorfastness to water, salt water, light and crocking as follows: Copyright Protected: Do Not Copy!PIA-T-5661D Page 5 of 17 Characteristic Rating, minimum Water 1/3-4 Salt water 1/3-4 Light (fade)
31、2/3-4 Crocking 3/3-4 Testing shall be as specified in TABLE IV Notes: 1/Rated using AATCC Evaluation Procedure 1, Gray Scale Color Change and AATCC Evaluation Procedure 2, Gray Scale for Staining. 2/ Rated using AATCC Evaluation Procedure 1, Gray Scale for Color Change. 3/Rated using AATCC Evaluatio
32、n Procedure 8, 9-Step Chromatic Transference Scale. 3.8 Length and put-up. Unless otherwise specified, tape and webbing shall be furnished on rolls containing 100 10 yards. Each roll shall contain not more than 3 pieces and no piece shall be less than 5 yards long. Tape and webbing 1/2 inch or less
33、in width may be furnished on double-headed spools or tubes containing 500 10 yards. Each spool or plastic tube shall have not more than 6 pieces, and no piece shall be less than 5 yards long. 3.9 Fiber identification. Each roll, spool or tube of tape or webbing shall be labeled, ticketed and invoice
34、d for fiber content in accordance with the Textile Fiber Products Identification Act. 3.9.1 Identification of product. Each roll, spool or tube of tape or webbing shall be marked for identification in accordance with good commercial practice. In addition, each roll, spool or tube of tape or webbing
35、shall be clearly and legibly marked with the finishers lot number or code, on an attached durable tag. 3.10 Workmanship. The finished tape or webbing shall conform to the quality and grade of product established by this specification. The occurrence of defects shall not exceed the levels set by the
36、applicable quality levels. 3.11 Date of manufacture (see 6.2). When required by the procurement document the textile manufacturer shall properly identify the age of the textile materials by placing a tag on the finished goods, or label on the containers identifying the specification to which the mat
37、erial 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 characteristics of the material. 4. VERIFICATION 4.1 Classification of Inspection. The inspection requirement
38、s 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 accordance with 3.1, shall be inspected as specified in 4.3 through 4.4 for compliance with design, construction, wor
39、kmanship Copyright Protected: Do Not Copy!PIA-T-5661D Page 6 of 17 and dimensional requirements. 4.3 Conformance inspection. Unless otherwise specified by the procuring activity (see 6.2), sampling for examination and testing shall be performed in accordance with 4.3.1 through 4.4. 4.3.1 Component a
40、nd 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, amended, modified or qualified in this specification or applicable procurement doc
41、uments. 4.4 End item inspection. 4.4.1 Yard-by-yard examination. The required yardage of each roll, spool or tube shall be inspected on both sides and visual defects classified as listed in TABLE II. All defects found shall be counted regardless of their proximity one to another except where two or
42、more defects represent a single local condition of the tape or 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. The sample unit for this examination shall be one lin
43、ear yard. Acceptance sampling shall be determined by using ANSI/ASQ Z1.4, Inspection Level II with an Acceptance Quality Limit (AQL) of 1.5 for major defects and 4.0 for total defects (major and minor combined). The lot size shall be expressed in units of one linear yard each. An approximately equal
44、 number of yards shall be examined from each roll selected. The number of rolls from which the sample is to be selected shall be in accordance with TABLE III of this specification. (THIS SPACE LEFT INTENTIONALLY BLANK) Copyright Protected: Do Not Copy!PIA-T-5661D Page 7 of 17 TABLE II Classification
45、 of defects. Examine Defects Major Minor Abrasion mark, bruise Resulting in rupture of individual yarns or plies, distortion in the orientation of threads, dimensional distortion and areas visibly thinner than adjoining unaffected areas 101 Broken or missing end Any 102 Broken or missing pick 2 or m
46、ore within a linear inch, regardless of the size of missing portion 103 Single, missing for more than 1/4 inch width 201 Coarse filling bar Yarn larger in diameter than in adjoining unaffected area resulting in increased stiffness or thickness 202 Crease Twisted or distorted, will not lay flat upon
47、application of manual pressure 203 Cut, hole, tear (including edges) (See “Broken ends“ and “Broken picks“) 104 Double end Resulting from wrong draw (see “Wrong draw“) 204 Drop-ply Clearly visible on more than 2 ends within same length and extending over 9 linear inches or more 105 Clearly visible o
48、n 1 or 2 ends within same length and extending over 9 linear inches or more 106 Edges cut or frayed Clearly visible 107 Edges beaded or corded Visible increase in thickness or misformed selvage 205 Edges folded or rolled (See “Crease“) 206 Edges loopy Forming clearly visible filling loops or edges t
49、ied loosely to body for 2 linear inches or more 207 Edges loose Resulting in waviness, distortion in orientation of filling or looseness along edges 208 Edges tight Resulting in visible tension along edge, or pucker, waviness, bagginess or slackness that cannot be flattened by manual pressure 108 Edges scalloped Any visible indentation of edge 109 Fine or light filling bar Clearly visible 209 Float Multiple, 1/2 inch or more in combined warp and filling directions or single floating over more than 1 inch 210 Multiple, less
