DLA A-A-50195 B-2007 THREAD ARAMID《聚芳基酰胺线》.pdf

1、INCH-POUND A-A-50195B June 8, 2007 SUPERSEDING A-A-50195A 21 June 2000 COMMERCIAL ITEM DESCRIPTION THREAD, ARAMID The General Services Administration has authorized the use of this commercial item description as a replacement for MIL-T-43636 for all federal agencies. 1. SCOPE. This commercial item d

2、escription covers nine sizes of aramid thread. The thread is intended for sewing heat and flame resistant uniforms, equipage, or supportive end items. 2. CLASSIFICATION. The thread may be soft or bonded. The following sizes of thread are specified in this document: 2.1 Sizes:Tex Denier40 400d 60 600

3、d 80 800d 120 1200d180 1800d240 2400d300 3000d350 3500d450 4200dComments, suggestions, 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

4、contact information can change, you may want to verify the currency of this address information using Acquisition Streamlining and Standardization Information System (ASSIST) online database at http:/assist.daps.dla.mil. AMSC N/A FSC 8310 Provided by IHSNot for ResaleNo reproduction or networking pe

5、rmitted without license from IHS-,-,-A-A-50195B 3. SALIENT CHARACTERISTICS. 3.1 General description. The thread shall be made of continuous multifilament aramid yarn and shall have a soft or bonded finish as specified in the contract or purchase order (see 7.4). The finished thread in Table I shall

6、have a minimal amount of non-flame propagating, non-staining finish commonly used to facilitate sewing. Unless otherwise specified, the direction of the twist for singles shall be “S”, and the plied thread shall be “Z”. Tex sizes 120 and finer shall average not more than one thread knot per 2 ounces

7、, and Tex sizes 180 and heavier shall average not more than one thread knot per 4 ounces. 3.2 Physical characteristics and requirements. The thread shall conform to the physical characteristics and requirements specified in Table I and breaking strength and elongation requirements specified in Table

8、 II. TABLE I. Physical characteristics and requirementsCharacteristic Requirement Test method Fiber identification Aramid AATCC-20 or ASTM D-276 Size See 2.1 ASTM D-3823 Twist: single plied “S” “Z” ASTM D-204 Procedure 22 ASTM D-204 Procedure 22 Yarn Multifilament Visual Breaking strength Table II A

9、STM D-204 Procedure 19.1.1 1/ 2 / After aging (min.) 85% of initial breaking strength See 3.3 ASTMD-204 Procedure 19.1.1 1/ 2/ Elongation (%) Table II ASTM D-204 Procedure 19.4 Colorfastness (min.) Laundering (after 3 cycles) 3-4 AATCC61, 1A 3/ 4/ see 3.5 1/ Testing speed shall be 12 (+ 0.5) inch mi

10、nimum, and a 10 inch gauge length unless otherwise specified, shall be used. (see 7.4) 2/ Five determinations per sample unit. 3/ AATCC Evaluation Procedure 1, Gray Scale for Color Change. 4/ The color transfer cloth evaluation shall not apply 2 Provided by IHSNot for ResaleNo reproduction or networ

11、king permitted without license from IHS-,-,-A-A-50195B TABLE II. Breaking strength and elongation Tex 1/ (sizes) Breaking strength, lbs. (min.) Elongation % (max.) 40 3.0 38 60 5.0 80 6.0 38 120 10.0 38 180 15.0 42 240 20.0 42 300 25.0 42 350 30.0 42 450 35.0 42 1/ Tex size based on weight in grams/

12、 1,000 meters thread. 3.3 Aging resistance test. Five specimens each, of all sizes, shall be used for the aging test. The specimens shall be exposed for 15 minutes to 500 (+10)F using an air circulating oven. Upon removal, the specimens shall be conditioned at standard atmospheric conditions for 4 h

13、ours and then tested for breaking strength as specified in Table I. 3.4 Color. The color shall be as specified in the applicable end item specification or in the contract order. The dyed thread shall conform to the applicable approved shade standard. 3.5 Finish removal procedure. Before evaluation f

14、or shade matching and testing for colorfastness, except colorfastness to wet dry cleaning, the thread shall be wet dry cleaned in accordance with AATCC-132. Excess solvent shall be removed by centrifuging or wringing. The sample shall then be rinsed in distilled water at 120 to 160 F and dried at a

15、temperature not exceeding 1800F. The dried sample shall then be conditioned for a minimum of 4 hours prior to evaluation for shade matching or colorfastness. 3.6 Visual shade matching. The color and appearance of the finished thread, after removal of finish (see 3.5), shall match the standard sample

16、 when viewed using AATCC Evaluation Procedure 9, Option A, with sources simulating artificial daylight D75 illuminant with a color temperature of 7500K + 200, with illumination of 100 + 20 foot candles, and shall be a good match to the standard sample under incandescent lamplight at 2856K+ 200. If n

17、o thread standard is available the sample should be a good match to the standard end item base cloth when viewed under the same lighting conditions specified above. 3.7 Finishing materials. The finished thread shall have no chemical finishes or treatments which have demonstrated harmful effects on t

18、he fiber, including effects of prolonged storage. No finish shall be used that will diminish flame resistance. No finish or treatment shall be applied for the purpose of increasing breaking strength. There shall be no noticeable wicking of the treatment on the thread to adjacent material when sewn.

19、3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50195B 3.8 Put-up. Unless otherwise specified, the thread shall be put-up on holders such as commercial spools, cones, or tubes as specified in the contract. The thread shall be wound around the sp

20、ecified holder in one continuous piece, so each turn and layer is free of entanglement. The outside ending of the thread shall be secured to prevent unwinding, loosening, or slippage during handling, shipping, or storage. 3.9 Labeling. Each holder shall have a label, adhered securely so as to remain

21、 in place and be clearly legible until all thread has been removed. The label shall be printed and include information related to length in yards, direction of twist, color, size (Tex or denier), name of thread manufacturer, and nomenclature specifying type (soft or bonded). 3.10 Workmanship. The fi

22、nished thread shall conform to the quality of product established by this document. The occurrence of defects shall not exceed the contractors own quality assurance standards and the quality assurance standards defined by the technical data in the bid package. 4. REGULATORY REQUIREMENTS. The offeror

23、/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 5. PRODUCT CONFORMANCE PROVISIONS. 5.1 Product conformance. The products provided shall meet the salient characteristics of this Co

24、mmercial Item Description, conform to the producers own drawings, specifications, standards, and quality assurance practices, and be the same product offered in the commercial marketplace. The government reserves the right to require proof of such conformance. 6. PACKAGING. 6.1 Packaging. Preservati

25、on, packing, and marking shall be specified in the contract or order. 7. NOTES. 7.1 Intended use. The thread is intended for sewing heat and flame resistant type uniforms, equipage, or supportive end items. 7.2 Source of documents. 7.2.1 Copies of government documents are available online at http:/a

26、ssist.daps.dla.mil/quicksearch/ from the Standardization Document Order Desk, 700 Robbins Avenue, Philadelphia, PA 19111-5094.7.2.2 AATCC Standards are available online at www.aatcc.org or from the American Association of Textile Chemists and Colorists, P.O. Box 12215, Research Triangle Park, NC 277

27、09-2215. 7.2.3 ASTM Standards are available online at www.astm.org or from ASTM INTERNATIONAL, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50195B 7.2.4 Federal Acquistion Regulations (

28、FAR) are available online at http:/acquisition.gov/far/index.html or by contacting the Superintendent of Documents at 202-512-1800. 7.3 Standard samples, patterns and drawings. 7.3.1 Standard samples and pattern drawings, address the contracting activity issuing the invitation for bids or request fo

29、r proposal. Standard samples are also available at DSCP through http:/warfighter.dla.mil under tab “Vendor Info” then “Specifications/Pattern Request” under “Special Instructions” provide color shade, roll number, and solicitation/contract number. 7.4 Ordering data. The contract or order should spec

30、ify the following: a. CID document number and revision. b. Type, size, finish, and ply of thread required. c. Gauge length for breaking strength (if otherwise specified see 3.2) d. Color required (see 3.4). e. Put-up required (see 3.8). f. Labeling (See 3.9) g. Quality assurance standards (see 3.10)

31、 h. Product conformance provisions (see 5.1). i. Packaging requirement (see 6.1). 7.5 Key words. Anti G garment Coveralls Gloves Jackets Trousers Wrist seal 7.6 Suppression data: The size designations of threads used in MIL-T 43636 are shown below with the correspondence tex and denier designations.

32、 Size Tex Denier B 40 400 E 60 600 F 80 800 FF 120 1200 3 180 1800 4 240 2400 5 300 3000 6 350 3500 7 450 4200 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50195B MILITARY INTERESTS: CIVIL AGENCY COORDINATING ACTIVITY: Custodians: GSA-FSS Arm

33、y GL Navy NU Preparing Activity: Air Force 9 DLA - CT Review activities: Army-MD Navy-AS Project No. 8310-2006-001 Air Force-11 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST online database at http:/assist.daps.dla.mil. 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-