NAVY MIL-C-28956-1970 CLOTH TWILL COTTON AND POLYESTER《棉花和聚酯斜纹织物衣料》.pdf

1、MIL-C-28956 83 7979706 038b11711 6 - r_ - ,- MIL-C-28956(MC) 3 August 1970 MILITARY SPECIFICATION CLOTH, TWILL; COTTON AND POLYESTER: WHITE 1. SCOPE 1.1 This specification covers the requirements for one type cotton and polyester fabric. 2. APPLICABLE IXCUMENTS 2.1 The following documents of the iss

2、ue in effect on date of invitation for bids or request for proposal form a part of the specification to the extent specified herein. SPEC IF ICATIONS FEDERAL PPP-P-1134 STANDARDS FEDERAL FED-STD-4 FED-STD-191 MILITARY MIL-STD-105 - Packaging and Packing of Cotton and Cotton-Synthetic Fiber Blend Fab

3、rics (Excluding Duck Fabrics) . - Glossary of Fabric Imperfections. - Textile Test Methods. - Sampling Procedures And Tables For Inspection By Attributes. Y (Copies of specification and standards required by suppliers in connection with specific procurement functions should be obtained from the proc

4、uring activity or as directed by the contracting officer.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-295b 83 9777906 03bLi75 _ MIL-C-28956 (MC) 2.2 Other Publications. The following documents form a part of this specification to the exten

5、t specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids, or request for proposal, shall apply. Technical Manual of the American Association of Textile Chemists test, inspection or other verifiable quality data. The Government reserves the right tocheck-test

6、 the material to determine validity of suppliers certification. Table II - Testing of Components 5 a. I .A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28956 (MC) 4.2.3 Examination of the end item. Examination of the end item.shal1 be in acc

7、ordance with 4.2.3.1 through 4.2.3.5. 4.2.3.1 Yard-by-yard examination. The entire yardage of each roll in the sample, but not more than 100 yards per roll, shall be examined on the face side. Defects as defined in Section I of FED-STD-4 which are clearly noticeable at normal inspection distance (3

8、feet) shall be scored and assigned demerit points as listed in 4.2.3.2, except that only those clubs and knots which exceed the maximum limit shown on Figures I and III of FED-STD-4 shall be scored. No linear yard (increments of 1 yard on the roll within the sample shall be penalized more than 4 poi

9、nts. The sample size shall be twenty rolls selected from twenty containers. For determination of acceptability on the average quality of the lot, the lot shall be unacceptable if the points per 100 square yards exceed 35.0 points. For determination of acceptability on the individual roll quality bas

10、is, the lot shall be unacceptable if two or more individual rolls exceed 53.00 points. If no individual roll exceeds the point level, the lot shall be accepted. If one roll exceeds the point level, a second sample of 20 rolls shall be selected for individual roll quality examination only. If no roll

11、 in the second sample exceeds the point value, the lot shall be accepted. If one or more rolls exceed the value, the lot shall be rejected. Point computation for lot quality and individual roll quality shall be as follows: .measuring device of the inspection machine) from any one Total points scored

12、 in sample size X 3600 = Points per 100 Contracted width of cloth (inches) X Total square yards yards inspected. 4.2.3.2 Demerit points. Demerit points shall be assigned as follows: For defects up to and including For defects exceeding 3 inches, but not 3 inches in any dimension exceeding 6 inches i

13、n any dimension exceeding 9 inches in any dimension - one point - two points For defects exceeding 6 inches, but not - three points For defects exceeding 9 inches in any dimension - four points U 6 P Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI

14、L-C-2875b 3 7779706 0386480 L MIL-C-28956 (MC) The following defects, when present, shall be scored 4 points for each yard in which they occur: Baggy, ridgy or wavy cloth Width less than specified Mottled, streaky or cloudy 4.2.3.3 Examination for lenqth. 4.2.3.3.1 Individual rolls. During the yard-

15、by-yard examination, each roll in the sample shall be examined for length. Any length found to be less than the minimum specified or more than 2 yards less than the length marked on the ticket shall be considered a defect with respect to length. in the sample are defective in respect to length. 4.2.

16、3.3.2 Total vardaue in sample. The lot shall be unacceptable if the total of the actual lengths of rolls in the sample is less than the total of the lengths marked on the tickets. The lot shall be unacceptable if two or more rolls 4.2.3.4 Examination for shade. During the yard-by-yard examination, e

17、ach roll in the sample shall be examined for shade. Any roll in the sample off-shade, shaded side to side, side to center or end to end shall be cause for rejection of the entire lot represented by the sample. 4.2.3.5 Examination for identification of preshrinkaqe process and noncompliance with the

18、Textile, Fiber Products Identification Act. During the yard-by-yard examination, each roll in the sample shall be examined for identification of preshrinkage process and noncompliance with the Textile Fiber Products Identification Act. The lot shall be unacceptable if two or more rolls in the sample

19、 contain identification of the preshrinkage process by name or trademark on the cloth or ticket, or are not labeled or ticketed in accordance with the Textile Fiber Products Identification Act. 4.2.4 Examination of preparation for deliverv requirements. An examination shall be made in accordance wit

20、h the provisions of PPP-P-1134 to determine compliance with packaging, packing and marking requirements of Section 5 of this specification. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-28756 83 7777906 03bllL 3 MIL-C-28956 (MC) 4.3 Testin

21、s of the end item. The methods of testing specified in Table III shall be in accordance with FED-STD-191. in Section 3 apply to the average of the determinations made on a sample unit of product for test purposes as specified in the applicable test methods. The unit of product for test purposes shal

22、l be 5 yards of the finished fabric. The lot shall be unacceptable if one or more units of product fail to meet any requirement specified herein. For each characteristic, thesimple size shall be The physical and chemical values specified as follows: Lot size in yards Less than 800 801 to 22,000 22,0

23、01 and over Sample size (Units of product) 2 3 5 4.3.1 Fiber percentaue. The finished fabric shall . contain the specified fiber percentages when tested in accordance with the 70 percent sulfuric acid test in Test Method 20A-1959 of the Technical Manual and Year Book, American Association of Textile

24、 Chemists and Colorists. The fiber content percentages shall be based on a bone dry, conditioned basis and shall be calculated by the following formula: Percentage of polyester fiber (based on. dry weight) D= R (100) DW Percentage of cotton fiber (based on dry weight) C=100- D Percentage of polyeste

25、r fiber in fabric (based on conditioned weight) DC = D(100) 100 Data. confhing to When 6.4 First article. Examination, test and approval shall be as specified by the contracting officer (see 3.2). Preparing activity: Project No. 8305-NO73 Navy - MC 10 I I Y I of Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-