1、 A-A-55126B INCH-POUNDSeptember 7, 2006 SUPERSEDING A-A-55126 A June 23, 1999 COMMERCIAL ITEM DESCRIPTION FASTENER TAPES, HOOK AND LOOP, SYNTHETIC The General Services Administration has authorized the use of this commercial item description as a replacement for MIL-F-21840 for all Federal agencies.
2、 1. SCOPE. This commercial item description covers the requirements for different types, classes, colors, and widths of hook and loop synthetic fastener tapes. The woven and extruded fastener tapes are intended to be used as closures for equipage and clothing. Users should determine which type and c
3、lass of hook and loop fastener tape meets their requirements (see 7.3). 2. CLASSIFICATION. The following types of hook fastener tapes and the following classes of hook and loop fastener tapes are specified in this document: 2.1 Types (Hook only): Type I - 6.5 mil woven hook fastener tape Type II - 8
4、.0 mil woven hook fastener tape Type III - Extruded plastic hook fastener tape, Non-Autoclave Type IV - Extruded plastic hook fastener tape, Autoclave Resistant 2.2. Classes (Hook and Loop): Hook fastener tape: Loop fastener tape: Class 1 - 100% nylon with selvage Class 1 - 100%nylon with selvage Cl
5、ass 2 - 75% aramid 25%nylon Class 2 - 100% aramid Class 3 - 100% polyester with selvage Class 3 - 100%polyester with selvage Class 4 - 100% nylon without selvage Class 4 - 100% nylon without selvage Class 5 - 100% polyester without selvage Class 5 - 100 % polyester without selvage Comments, suggesti
6、ons, or questions on this document should be addressed to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, Attn: DSCP Standardization Team, 700 Robbins Avenue, Philadelphia, PA 19111-5096. Since contact information can change, you may want to verify the currency of this addres
7、s information using Acquisition Streamlining and Standardization Information System (ASSIST) online database at http:/assist.daps.dla.mil . AMSC N/A FSC 8315 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55126B 3. SALIENT CHARACTERISTICS 3.1
8、Tape material. The woven hook and loop fastener tapes shall be fabricated of synthetic fibers and yarns. The Type III and IV, Class 4 hook fasteners shall be made using extruded nylon resin. The Class 1 and 4 hook fastener tape shall be 100% nylon. The Class 2 hook fastener tape shall be a blend of
9、aramid and nylon fibers and yarns consisting of a nylon hook with an aramid ground. The Class 1 loop fastener tape shall be 100% nylon and the Class 2 loop fastener tape shall be 100% aramid. The Class 3 and Class 5 hook and loop fastener tapes shall be all 100% polyester. All Class 4 and 5 tapes ma
10、y be slit in widths ranging from 5/8 inches to 4 inches with non-fraying edges. All selvages (including the 4 inch wide tape) shall not exceed 1/8 inch. The tolerance for each width of woven tape (selvage or non selvage) shall be + 1/16 inch (including selvage when applicable), except the 4 inch tap
11、e which shall be + 1/8 inch. Width tolerances for the extruded tape shall be + 1/32 inch. Unless otherwise specified in the end item, tapes shall exhibit the same edge finish on both sides of the tape, (both sides either have a selvage or both sides do not have a selvage). 3.2 Construction. 3.2.1 Ho
12、ok Fastener Tapes. 3.2.1.1 Construction of woven hook fastener tape (Type I and II, all Classes). The hook fastener tape shall be a woven, warp loop, narrow fabric construction, with multifilament ground ends (including selvages) and picks. Monofilament auxiliary warp ends shall be woven in the form
13、 of raised loops which can be heat set to retain their shape and cut near the top of the loop in order to form a free hook engaging section. The hook shall be a leno weave, woven in a staggered order. The Type I hook fastener tape shall be made using a 6.5 mil, 200 denier hook, and the Type II hook
14、fastener tape shall be made using a 8.0 mil, 300 denier hook. The hook fastener tape shall be visually examined for construction conformance and it shall conform to the requirements in Table I and II when tested in accordance with the test methods in Table VII. One determination per sample unit shal
15、l be made and the results reported as “pass” or “fail”. 3.2.1.2 Construction of extruded hook fastener tape (Type III). The extruded hook fastener tape shall be a continuous extrusion of plastic nylon resin. The Class 4 hook fastener tape shall have fully formed hooks that are a minimum height of 0.
16、025 inch with alternating rows and containing a minimum of 375 hooks per square inch. The Class 4 hook fastener tape shall have an average stiffness of no more than 0.07 inch pounds when tested as specified in Table VII. The hook fastener tape shall be visually examined for construction conformance
17、and it shall conform to the requirements in Table I and II when tested in accordance with the test methods in Table VII. 3.2.1.3 Construction of extruded hook fastener tape (Type IV). The extruded hook fastener tape shall be a continuous extrusion of plastic nylon resin. The Class 4 hook fastener ta
18、pe shall have fully formed hooks that are a minimum height of 0.035 inch with alternating rows and containing a minimum of 375 hooks per square inch. The Class 4 hook fastener tape shall be autoclave resistant. The hook fastener tape shall be visually examined for construction conformance and it sha
19、ll conform to the requirements in Table I and II when tested in accordance with the test methods in Table VII. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55126B 3.2.2 Loop fastener tape (all Classes). The loop fastener tape shall be a wove
20、n, warp loop, narrow fabric construction, with multifilament ground ends (including selvages) and picks, with leno woven loop warp ends. The loops shall be suitably napped to form a uniformly disoriented surface of uncut loops capable of being engaged by the hooks of the hook fastener tape component
21、. As an alternate, the loop shall be woven of specially treated yarns that provide a uniformly disoriented surface without being napped. The loops of the Class 2 tape shall remain unnapped. The loop fastener tape shall be visually examined for construction conformance and it shall conform to the req
22、uirements in Table I and II when tested in accordance with the test methods cited in Table VII. One determination per sample unit shall be made and the results reported as “pass” or “fail”. 3.3 Physical requirements. The hook and loop fastener tape shall conform to the requirements stated in Table I
23、 and Table II when tested as specified in Table VII. TABLE I - Physical requirements Width, Hook/Loop Fastener Tape (inch) 4 2 1-1/2 1 3/4 5/8 Characteristic Weight, grams/linear yard (min.) 14.4 9.0 6.9 4.5 3.4 2.8 Hook Type I Class 1 and 4 Class 2 - 13.2 9.7 6.6 4.8 4.4 15.2 9.4 6.9 4.7 3.5 2.8 Ty
24、pe II Class 1 and 4 Class 3 and 5 - 10.6 - 5.6 - - Type III and IV Class 4 32.0 16.0 12.0 8.0 6.0 5.0 22.4 12.6 9.4 5.9 4.1 3.4 - 15.8 12.0 8.1 6.0 5.0 Loop Class 1 and 4 Class 2 Class 3 and 5 - 10.4 - 5.3 - - Breaking strength, lbs. (min.) 320 170 115 90 70 65 Hook Type I Class 1 and 4 Class 2 - 23
25、0 155 125 90 85 320 170 135 100 80 65 Type II Class 1 and 4 Class 3 and 5 - 230 - 130 - - Type III and IV Class 4 - - - - - - 280 165 120 75 50 43 - 230 160 115 70 50 Loop Class 1 and 4 Class 2 Class 3 and 5 - 175 - 95 - - 3 Provided by IHSNot for ResaleNo reproduction or networking permitted withou
26、t license from IHS-,-,-A-A-55126B TABLE I - Physical requirements (Continued) Width Hook/Loop Fastener Tape (inch) 4 2 1-1/2 1 3/4 5/8 Characteristic Shear strength, lbs./sq. inch (min.) After 3 Launderings After 1drycleaning 1/ 5.0 5.0 5.0 5.0 4.7 4.3 Hook Type I Class 1 and 4 Class 2 - 10.0 10.0 1
27、0.0 6.7 5.0 10.0 10.0 10.0 10.0 6.7 4.7 Type II Class 1 and 4 Class 3 and 5 - 16.0 - 16.0 - - Type III Class 4 30.0 30.0 30.0 30.0 22.5 18.7 Type IV -After Autoclaving Class 4 2/ 2/ 2/ 2/ 2/ 2/ Peel strength, lbs./inch (min.) After 3 launderings After 1 drycleaning 1/ Hook Type I Class 1 and 4 Class
28、 2 0.5 - 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Type II Class 1 Class 3 and 5 1.0 - 1.0 0.5 1.0 - 1.0 0.5 1.0 - 1.0 - Type III and IV Class 4 0.8 0.8 0.8 0.8 0.8 0.8 Stitch Tear Strength, lbs. (min.) Hook Type I Class 1 and 4 Class 2 3.5 7.0 3.5 7.0 3.5 7.0 3.5 7.0 3.5 7.0 3.5 7.0 Type II Class 1 a
29、nd 4 Class 3 and 5 3.5 2.0 3.5 2.0 3.5 2.0 3.5 2.0 3.5 2.0 3.5 2.0 Type III and IV Class 4 2.5 2.5 2.5 2.5 2.5 2.5 6.0 6.0 6.0 6.0 6.0 6.0 7.0 7.0 7.0 7.0 7.0 7.0 Loop Class 1 and 4 Class 2 Class 3 and 5 3.5 3.5 3.5 3.5 3.5 3.5 1/ Dry cleaning only required if specified in the contract. 2/ 90% of or
30、iginal shear strength. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55126B TABLE II - Physical requirementsHook Loop Characteristic Type I Type II Type III Type IV (Class 4 only) All Classes Thickness, inch (min.) 0.050 0.050 0.04 0.04 0.095
31、 Length Dimensional Stability, % (max.) 3.0 3.0 3.0 - .0 Autoclave (Thermal) Length Shrinkage, % (max.) 1/- - - 3.0 - 1/ The fastener tape shall not exhibit any curling after autoclaving. 3.4 Thermal Stability. The class 2, hook and loop fastener tapes shall not melt, drip, separate or ignite when t
32、ested in accordance with the Thermal Stability Test cited under NFPA 1975 (see 7.1). 3.5 Colors. The color of the hook and loop fastener tape shall as be specified in the contract or purchase order and shall meet the requirements listed below. 3.5.1 Visual shade matching. The color and appearance of
33、 the cloth shall match the standard sample when viewed using the AATCC Evaluation Procedure 9, Option A, with sources simulating artificial daylight D75 Illuminant with a color temperature of 7500 K + 200 with illumination of 100 + 20 foot candles, and shall be a good match to the standard sample un
34、der incandescent lamplight at 2856K + 200. 3.5.2 Colorfastness. The finished hook and loop fastener tapes shall conform to the colorfastness requirements listed in Table III when tested as specified in Table VII. Colorfastness requirements shall not apply to the Type III and IV hook fastener tapes.
35、TABLE III - Colorfastness requirements Colors Evaluation Laundering1/ 2/ 3/ (min.) Light (40 hrs or 170 KJ) 1/ 3/ (min.) Dry Cleaning 2/ 4/ (min.) Crocking 5/ (min.) Universal Camouflage shades: Desert Sand 503 Urban Gray 505 Foliage Green 504 Type I and Type II Class 1 and 4 2-3 (5 cycles) 4-5 4-5
36、4.0 All other colors: All Types and Classes 4 (3 cycles) - 3.5 3.5 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. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without li
37、cense from IHS-,-,-A-A-55126B 3/ The colorfastness after laundering and light exposure shall remain the same hue as the original sample. Hue/cast is defined as the attribute or color that classifies a color as red, blue, and green etc. 4/ If specified in the contract or purchase order. 5/ Rated usin
38、g the AATCC Evaluation Procedure 8, AATCC 9-Step Chromatic Transference Scale. 3.6 Spectral Reflectance. The reflectance values for the loop side of the Foliage Green 504 finished tape shall conform to the requirements specified in Table IV, when tested as specified in 3.6.1. 3.6.1 Spectral reflecta
39、nce test. Spectral reflectance data shall be determined on the face side and shall be obtained from 600 to 860 nanometers (nm) at 20 nm intervals on a spectrophotometer relative to the barium sulfate standard, the preferred white standard. Other white reference materials may be used provided they ar
40、e calibrated to absolute white, e.g. magnesium oxide or vitrolite tiles. The spectral bandwidth shall be less than 26 nm at 860 nm. Reflectance measurements shall be made by either the monochromatic or polychromatic mode of operation. When the polychromatic mode is used, the spectrophotometer shall
41、operate with the specimen diffusely illuminated with the full emission of a source that simulates either CIE source A or CIE source D65. The specimen shall be measured as a single layer only on the loop fastener tape. Measurements shall be taken on a minimum of two different areas and the data avera
42、ged. Specimens shall be oriented in different directions during testing. The specimen shall be viewed at an angle no greater than 10 degrees from the normal, with the specular component included. Photometric accuracy of the spectrophotometer shall be within 1 percent and the wavelength accuracy with
43、in 2 nm. The standard aperture size used in the color measurement device shall be 0.3725 inches or larger in diameter to measure the loop fastener tape. Any color having spectral reflectance values outside the limits at four or more of the wavelengths specified shall be considered a test failure. TA
44、BLE IV - Spectral reflectance requirements, Reflectance Values, %Foliage Green 504 (Loop (pile)fastener tape only) Wavelength, Nanometers (nm) Min. Max. 640 8 20 660 10 26 680 12 32 700 20 40 720 22 46 740 24 46 760 26 48 780 30 48 800 34 50 820 34 54 840 36 54 860 38 56 6 Provided by IHSNot for Res
45、aleNo reproduction or networking permitted without license from IHS-,-,-A-A-55126B 3.7 Finish. All hook and loop fastener tapes shall be stabilized as necessary to allow for maximum flatness and dimensional stability. In addition, the back of each Class 1, 3, 4 and 5 hook fastener tapes shall be coa
46、ted with a polymeric or elastomeric undercoating. The Class 2 hook and Class 2 loop fastener tape shall be coated with a flame retardant coating. The coatings shall be cured. This requirement does not apply to Type III and IV hook tapes. 3.8 Special adhesive backings. When a special adhesive backing
47、 is specified, the fastener tapes shall be coated with an adhesive backing (except for selvages). Adhesive backed products shall not be evaluated for fray, stitch tear, and colorfastness (see 7.4). 3.9 Splicing. When spliced tape is furnished, care shall be taken to assure that splices are smooth an
48、d properly aligned with edges to allow free passage through automatic sewing equipment. The spliced area shall not affect the functional characteristics of the hook and loop tapes. The sealed splices shall have no loose edges. The breaking strength of the splice shall be not less than 30 percent of
49、the minimum specified for the unspliced tape when tested in accordance with Table VII except that the jaws shall be 1 inch by 3 inches. The length of the overlap of the splices shall be 5/16 to 5/8 inch. When splices are tested for breaking strength, the splice shall be centered between the jaws. When
