DLA A-A-55278 A-2001 COVERALLS ANTI-EXPOSURE《防曝光工作服》.pdf

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1、 INCH-POUND A-A-55278A January 2, 2001 SUPERCEDING A-A-55278 May 5, 1995 COMMERCIAL ITEM DESCRIPTION COVERALLS, ANTI-EXPOSURE The General Services Administration has authorized the use of this Commercial Item Description in lieu of MIL-C-29109. 1. SCOPE. This Commercial Item Description covers the r

2、equirements for a hooded submarine deck exposure coverall intended for use by Navy topside personnel to provide thermal protection in extreme wet/cold environments. 1.1. CLASSIFICATION. The coveralls shall be in the following sizes: Small, Medium, Large, Extra-Large, Extra-Extra-Large 2. SALIENT CHA

3、RACTERISTICS2.1 Description. The fully lined coverall shall have a flexible foam interlining and two fleece-lined hand warmer chest pockets; two cargo pockets with flaps (hook and loop tape closures) on front of garment; pencil pocket (four slot) with flap on upper left sleeve; retro-reflective tape

4、 positioned vertically at center of attached hood, down the front panels, and horizontally across the center back of the garment for improved night time visibility; and a braided cord and attachable cord lock inserted within a 1/2 inch channeled hem on hood to secure closure around the neck. The bra

5、ided cord shall measure 28-1/2 inches (minimum) after ends are knotted. The two chest pockets shall have horizontal bartacks at the top, vertical bartacks at the bottom and two cargo pockets shall have drain holes in the lower corners, both sleeves shall have four drain holes located on the lining a

6、ccording to the marks on patterns. All drain holes shall be reinforced with corrosion resistant eyelets. The front closure shall have a slide fastener and storm flap (hook and loop closure) from the neck to crotch of garment. In addition each sleeve opening shall have a slide fastener closure and ea

7、ch leg opening shall have a slide fastener and storm flap Beneficial comments, (recommendations, additions, deletions) and any data which may be of use in approving this document should be addressed to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, Attn: DSCP-COCT, 700 Robbi

8、ns Avenue, Philadelphia, PA 19111-5096. AMSC N/A FSC 8415 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55278A 2(hook and loop closure). The leg bottoms, sleeves, and waistband shall have hook and loop adjustment straps. All hook and loop tape

9、fasteners and retro-reflective tape shall be set according to marks on the pattern. The cargo pockets shall have vertical bartacks at each end of pocket openings. 2.2 Materials. 2.2.1 Outershell. The basic material shall be a 2 up 1 down right hand twill nylon cloth made from first quality, continuo

10、us filament, 210 denier, bright luster nylon yarn with a minimum of 30 filaments per yarn and shall conform to the physical requirements of Table I when tested as specified. The finished vulcanized cloth shall be coated on one side with approximately 4.0 ounces per square yard (135.6 g/m2) of chloro

11、prene rubber suitably compounded; plasticized; and pigmented in an international orange shade. No elastomer other than chloroprene shall be used. The finished coated cloth shall conform to the physical requirements of Table II when tested as specified. Table I - Uncoated Cloth Physical Requirements

12、Characteristics Minimum Maximum Test method Weave 2 up 1 down right hand twill Visual 1/ Yarn Denier 210 - 2/ Filament 30 - 2/ Luster bright - 2/ Weight, oz./yd23.4 3.6 ASTM D3776 Option A Yarns per Inch Warp Filling 56 56 - - ASTM D3775 Breaking Strength, lbs. Warp Filling 225 210 - ASTM-D-5034 Fle

13、x stiffness, inch-lbs x 10 4 Warp Filling- - 2.5 1.8 ASTM-D-1388 opt. A Nonfibrous Material - 1.0% ASTM D629 (section 9) Heat Setting Test Distortion or puckering No appreciable change Visual 3/ Colorfastness to: Laundering Dry Cleaning Light “Good“ “Good“ “Good“ AATCC 61 test 1A 4/AATCC 132 AATCC 8

14、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55278A 3Table I - Uncoated Cloth Physical Requirements (continued) Crocking, Munsell Value - 8.5 AATCC 16 option A 7/ Sulfur content No more labile sulfur than shown by the standard sample 8/ PH 5.

15、0 8.5 AATCC-81 Copper content - 0.003% ASTM-E-1452 Manganese Content - 0.0015% ASTM-E-1452 1/ One determination per sample unit and the results reported as “pass“ or “fail“. 2/ A certificate of compliance will be acceptable for this requirement. 3/ The test specimen shall consist of a square of clot

16、h at least 12 by 12 inches, marked off with a square 10 by 10 inches. The test specimen shall be placed in an oven maintained at 280oF +2ofor a period of 2 hours. The specimen shall be removed from the oven and conditioned under standard atmospheric conditions. The specimen shall then be measured fo

17、r dimensional changes. The measurements shall be made at least 1 inch from the edge of the square and at the center of the square in the warp and filling direction. The specimen shall then be visually compared with the original unheated fabric for distortion, or puckering. One specimen shall be test

18、ed from each sample unit. The dimensional change of the sample unit in the warp and filling direction shall be the average of the specimens tested from each direction, respectively, and shall be reported separately to the nearest 0.1 percent. Distortion and puckering shall be reported as “pass“ or “

19、fail“. NOTE: When cutting the samples, make certain the twill line goes from the lower left to the upper right in a 45 degree angle. 4/ One determination per sample unit and the dimensional change reported to the nearest 0.1 percent. 5/ Samples shall be conditioned as directed in “D1776 Practice for

20、 Conditioning Textiles for Testing“ prior to testing. 6/ The specimens must be dried after each of the three laundering cycles. The soap solution shall contain 0.5 percent by weight, P-D-245, Detergent, Laundry, and Hand Dishwashing (Granular) Type II, in water hardness not over 50 parts per million

21、. The specimen weight shall be 4.0 +0.5 grams and the rotating time shall be 30 minutes with ten stainless steel balls in each cylinder. 7/ When a color change equal to Step 4 on the Gray Scale is evident in either the evaluation sample or the standard sample, exposure shall be continued for an addi

22、tional number of hours equal to the number of hours at which the color change was apparent. Specimens which do not show a color change until 80 AFUs shall be returned to the machine for a total exposure period not to exceed 140 hours. Provided by IHSNot for ResaleNo reproduction or networking permit

23、ted without license from IHS-,-,-A-A-55278A 48/ In the determination of presence of labile sulfur in textile materials with lead acetate, two 1.50 + 0.01 gram samples from each material submitted for evaluation shall be tested. Each of the two samples shall be cut into very small pieces and placed i

24、nto separate test tubes. The samples shall be submersed in a stannous chloride solution that contains 100 grams of stannous chloride crystals ACS in 100 milliliters of hydrochloric acid ACS (35 percent concentration) and 50 milliliters of distilled water. A filter paper wet out with a 5.0 percent le

25、ad acetate solution shall be placed over top of the test tube. The lead acetate solution contains 5.0 grams of lead acetate CP reagent grade and enough distilled water to make up a 100 milliliters solution; if the solution is not clear, add a few drops (one at a time) of glacial acetic acid until th

26、e solution is clear. The test tube containing the textile sample, stannous chloride and wet filter paper shall be heated over a low flame until the solution is boiling. The solution should not be heated for more than 15 seconds. A brown to black stain on the filter paper should be evaluated as follo

27、ws: Free the filter paper shows no discoloration or staining of any kind. Slight The filter paper shows a light tan to light brown discoloration stain. Moderate The filter paper shows a dark brown discoloration stain. Severe The filter paper shows a black color stain. Table II - Coated Cloth Physica

28、l Requirements Characteristic Minimum Maximum Test Method Weight, oz./yd.27.0 9.0 ASTM D3776 Opt. 7 Breaking strength, lbs. Warp Filling 225 210 ASTM D5034 Tear strength, grams Warp Filling 4500 3500 ASTM D1424 1/ Hydrostatic Resistance, lbs./in2Initial After 5 launderings After 40 hours weatheromet

29、er 100 80 80 - ASTM D751 2/ 12/ AATCC-96 VI A ASTM D751 2/ 8/ AATCC-111A opt. 4 ASTM D751 2/ 8/ Flex stiffness, inch-lbs. x 10-4at 70oF Warp Filling - - 9.0 7 ASTM-D-1388 3/ 4/ Flex stiffness, inch- Lbs x 10-4at -20oF Warp Filling - - 25 25 ASTM-D-1388 3/ 5/ Provided by IHSNot for ResaleNo reproduct

30、ion or networking permitted without license from IHS-,-,-A-A-55278A 5Table II - Coated Cloth Physical Requirements (continued) Resistance to heat at 160oF No evidence of tackiness, exudation, or loss of flexibility - ASTM-D-5034 Adhesion of coating, lbs. per 2 inch width 10 - ASTM-D-751 Blocking, sc

31、ale rating - No. 2 ASTM-D-751 Dusting powder Resistance to dry crocking “good“ - AATCC 8 6/ 1/ Standard instrument with one augmenting weight. 2/ The water pressure shall be applied only to the uncoated side of the test specimens. 3/ Ten specimens shall be tested and averaged, five with the coated s

32、ide up and five with the coated side down. 4/ Prior to performing this test, the test specimens shall be conditioned for at least four hours at the specified temperature. 5/ Prior to performing this test, the test specimens shall be conditioned for one hour at the specified temperature. 6/ The test

33、shall be conducted using the blue/black crock cloth. 7/ Samples shall be conditioned as directed in “D1776 Practice for Conditioning Textiles for Testing“ prior to testing. 8/ Procedure A -Pressure application by Mullen type Hydrostatic Tester, sections 34-37, Procedure 1 (except that the rate of di

34、splacement shall be as specified in section 34.2) shall be used. 2.2.2 Foam Interlining. The foam interlining shall be unicellular closed cell foam, 3/16 inch in thickness, made from an expanded supersoft polyvinyl-chloride plastic material. The finished material shall comply with U.S. Coast Guard R

35、egulations CFR 164.015 for type A foam. 2.2.3 Lining. The lining material shall be nylon taffeta; fully heat set at a Minimum temperature of 4000F (2040C) The shade shall be black. The yarn shall be continuous filament, semi dull or equal for the warp and filling and shall conform to the physical re

36、quirements of Table III when tested as specified. 2.2.4 Fusible Interlining. The fusible interlining utilized to impart stiffness to flaps and closures shall be of a type suitable for the intended end use. 2.2.5 Fleece lining. The fleece lining for the chest pockets shall be made of 100% polyester,

37、6.4 oz/yd2, 32 gauge knit fabric. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55278A 6Table III. - Lining Cloth Physical Requirements Characteristic Minimum Maximum Test Method Weave Plain - Visual 1/ Yarn Denier - 70 2/ Weight oz./yd.2 1.9 2

38、.0 ASTM D3776 opt. C 8/ Yarns per inch Warp Filling 106 92 ASTM D3775 8/ Break strength, lbs. Warp Filling 110 95 - - ASTM D5034 ASTM D5034 Tear strength, lbs. Warp Filling 3.64 2.97 - - ASTM-D1424 3/ ASTM-D1424 3/ Flex stiffness, inch-lbs. X 10-4Warp Filling - - 1.5 0.5 ASTM-D-1388 Dynamic Absorpti

39、on (max) Initial after 3 launderings 8% max. for avg. of sample units and 10% max. For any individual sample. - AATCC-70 AATCC-96 9/ 10/ 11/ option 1c AATCC-70 4/ Spray rating (3 samples) Initial After 3 launderings 100, 100, 90 80, 80, 70 AATCC 22 12/ AATCC 96 option Ic 9/ 10/ 11/ AATCC 22 4/ 12/ N

40、onfibrous Material - 1.0% ASTM-D-629 (section 9) Heat Setting Test Distortion or puckering Dimensional change No appreciable change 2.0% 5/ 6/ 5/ 6/ Colorfastness to: Laundering Dry cleaning Perspiration Light Crocking “good“ “good“ “good“ “good“ 3.0 - - - - - AATCC 61 test 1A 13/ AATCC-132 AATCC 15

41、 14/ AATCC 16 option A 7/ 5/ AATCC 8 PH 5.0 8.5 AATCC 81 1/ One determination per sample unit and the results reported as “pass“ or “fail“. 2/ A certificate of compliance will be acceptable for the stated requirement. 3/ Standard instrument with one augmenting weight. Provided by IHSNot for ResaleNo

42、 reproduction or networking permitted without license from IHS-,-,-A-A-55278A 74/ Specimens shall be subjected to 3 complete cycles (wash and dry) prior to determination of dynamic absorption and spray rating. 5/ One determination per sample unit and the dimensional change reported to the nearest 0.

43、1 percent. 6/ The test specimen shall consist of a square of cloth at least 12 by 12 inches marked off with a square 10 by 10 inches. The test specimen shall be placed in an oven maintained at 280oF +2ofor a period of 2 hours. Then the specimen shall be removed from the oven and conditioned under st

44、andard atmospheric conditions. The specimen shall then be measured for dimensional changes. The measurements shall be made at least 1 inch from the edge of the square and at the center. The specimen shall then be visually compared with the original unheated fabric for distortion, or puckering. One s

45、pecimen shall be tested from each sample unit. The dimensional change of the sample unit in the warp and filling direction shall be the average of the specimens tested from each direction, respectively, and shall be reported separately to the nearest 0.1 percent. Distortion and puckering shall be re

46、ported as “pass“ or “fail“. 7/ Total exposure time shall be 20 hours. 8/ Samples shall be conditioned as directed in “D1776 Practice for Conditioning Textiles for Testing“ prior to testing. 9/ Sample size shall be 22 by 22 inches with 18 inch benchmarks, 6 inches apart. 10/ Use Drying Procedure (D)

47、or samples may be dried using a thermostatically controlled circulating oven at 221o- 230oF until dried. The sample shall be allowed to cool for 5 minutes, sprinkled with water to permit damp pressing, and allowed to stand in this condition for 5 minutes. 11/ The dampened specimens shall be pressed

48、with a flatbed press as described in AATCC 96 Section 5.2 or a hand iron as described in AATCC 96 Section 5.10 at a temperature of 275oto 300oF. Section 7.4 of AATCC 96 shall not apply. 12/ Each sample shall be 7 inches by 7 inches. 13/ The specimen must be dried after each of the three laundering c

49、ycles. The soap solution shall contain 0.5 percent by weight, P-D-245, Detergent, Laundry, and Hand Dishwashing (Granular) Type II, in water hardness not over 50 parts per million. The weight of the specimen shall be 4.0 +0.5 grams and the rotating time shall be 30 minutes with ten stainless steel balls in each cylinder