1、AMSC N/A FSC 8135 PERFORMANCE SPECIFICATION BARRIER MATERIALS, WATERVAPORPROOF, GREASEPROOF, FLEXIBLE, HEAT-SEALABLE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for heat-sealable,
2、greaseproof, flexible barrier materials having low water vapor transmission characteristics for use in military packaging. 1.2 Classification. Barrier materials are furnished in the following classes. Class 1 - Plastic backing (non-woven) Class 2 - Kraft backing (limited use) Class 3 Scrim backing (
3、woven fabric) 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 recommended for additional information or as examples. While ever
4、y effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed. Comments, suggestions, or questions on this document should be add
5、ressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 491000B120-3, Highway 547, Lakehurst, NJ 08733-5100 or emailed to thomas.omaranavy.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at htt
6、p:/assist.daps.dla.mil. NOT MEASUREMENT SENSITIVE MIL-PRF-131K 18 August 2005 SUPERSEDING MIL-PRF-131J 26 August 1998 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-131K 2 2.2 Government documents. 2.2.1 Specifications and standards. The fol
7、lowing standard forms a part of this document to the extent specified herein. Unless otherwise specified, the issues of this document are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-3010 - Test Procedures for Packaging Materials. (Copies of this document are
8、available on line at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent
9、 specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR QUALITY (ASQ) ASQ-Z1.4 - Procedures, Sampling and Tables for Inspection by Attributes. (DoD adopted) (Copies of this document are available from www.asq.
10、org or the American Society for Quality, 600 Plankinton Avenue, Milwaukee, WI 53203.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) INTERNATIONAL ASTM-D471 - Rubber Property-Effect of Liquids, Standard Test Method for. (DoD adopted) ASTM-D882 - Tensile Properties of Thin Plastic Sheeting, Standa
11、rd Test Method for. (DoD adopted) ASTM-D5733 - Tearing Strength of Nonwoven Fabrics by the Trapezoid Procedure, Standard Test Method for. ASTM-F1249 - Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor, Standard Test Method for. (Copies of these documen
12、ts are available from www.astm.org or the American Society for Testing and Materials International, 100 Bar Harbor Dr., West Conshohocken, PA 19428-2959.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-131K 3 2.4 Order of precedence. In the
13、event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. The barri
14、er materials furnished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.2 and 6.4). 3.2 Material. Barrier materials shall be made from such materials and by such processes as t
15、o ensure compliance with the performance requirements of this specification. 3.3 Construction. Barrier materials shall be constructed of one or more plies in any manner which ensures compliance with the performance requirements of this specification. Butting of component materials or the finished pr
16、oduct shall not be permitted except in the direction perpendicular to the rolling direction. When a butt weld is made on the finished product or any ply thereof, the areas shall be externally flagged with colored markers to prevent use of that portion of the roll. 3.3.1 Splices. A roll shall not con
17、tain more than 3 splices (4 pieces) and each piece shall be not less than 45 yards in length. Splices within rolls shall be even the entire width of the roll material and shall not come apart during unwinding of the roll. Rolls containing splices shall be flagged at both ends of each splice with col
18、ored markers to indicate splices within the roll. Barrier material in flat cut sheets shall not contain splices (see 4.3.2.2). 3.4 Form. The barrier material shall be furnished in rolls or flat cut sheets as specified in the contract or order (see 6.2). 3.4.1 Rolls. Unless otherwise specified (see 6
19、.2), the width of roll material shall be 36 inches, with a tolerance of plus inch or minus 18 inch. The average length of roll material shall be not less than 200 yards. The length of any individual roll shall be not less than 195 yards. The roll material shall be uniformly wound on nonreturnable co
20、res. The cores inside diameter shall be not less than 3 inches, with a tolerance of plus 18 inch. The length of the core shall be equal to the width of the roll material, with a tolerance of plus 18 inch. The core shall be rigid to prevent distortion of the roll during use and shipment conditions (s
21、ee 4.3.2.3). Each roll shall be restrained to prevent unwinding (see 4.3.2.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-131K 4 3.4.2 Sheets. When flat cut sheets are specified, the length and width shall be as specified by the procurin
22、g activity (see 6.2). If the length and width tolerances for cut sheets are not specified the tolerance for each shall be plus inch or minus 18 inch (see 4.3.2.3). Flat cut sheets shall be uniformly stacked (see 4.3.2.2). 3.5 Sealing. Barrier materials shall be heat-sealed under conditions recommend
23、ed by the manufacturer. These sealing conditions shall be such as are considered reasonable for production line sealing operations with respect to commonly available sealing equipment and commercially practical fabrication time. The material shall exhibit no delamination at the heat-sealed area when
24、 sealed under the manufacturers recommended conditions (see 4.5). Each roll or package (flat cuts) of barrier material shall include a tag secured to the core of rolls, or sheet inserted in the package of sheets with the sealing instructions for heat-sealing on rotary, band, and jaw-type sealing equ
25、ipment. The tag or sheet shall be visible upon opening the unit package. 3.6 Identification of material. The specification number, class, manufacturers name, manufacturers designation, month and year of manufacture, lot number, and heat sealing conditions (temperature, pressure, and dwell time) shal
26、l be clearly and legibly marked using water-resistant ink on the backing surface of the material. The color of the markings shall be lusterless red (see 4.3.2.1). The complete markings shall be continuous lengthwise and the distance between groups of markings shall be not greater than 2 inches. A co
27、mplete group of markings shall appear once in each 18 inches of width of the roll. The letters and figures shall be not less than 18 inch high (see 4.3.2.3). 3.7 Performance requirements. The performance of the barrier materials shall conform to the requirements specified in table I, when tested in
28、accordance with 4.6. 3.8 Workmanship. Barrier material surfaces shall be free from any foreign matter. The barrier material edges shall be cut and trimmed of any selvage. Barrier material shall be free from holes, tears, cuts, sharp creases, wrinkles, or other imperfections (see 4.3.2.1). Provided b
29、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. Performance requirements. Characteristics Class 1 Requirements Class 2 Requirements Class 3 Requirements Test Paragraph Reference Seam Strength 1. As received material sealed presence of any foreign matt
30、er, dirt, sand, grit, or oil spots. (Note: Defects do not apply to outer convolution of roll.) Workmanship Blister, crack, cut, hole, tear, sharp crease, chafed spot, or scuff mark. (Note: Defects do not apply to outer convolution of roll.) Evidence of delamination or embrittlement. Edges not clean
31、cut; ragged, crushed, or uneven. Construction Not uniform; layer or section missing, selvage present. Identification markings Illegible, incorrect, incomplete, or omitted. Do not appear on backing surface of material; not continuous lengthwise. Color is not lusterless red. 4.3.2.2 Examination of the
32、 end item for defects in general construction. The sample unit for this examination shall be one roll or one package of sheets, as applicable. TABLE IV. Examination of end item for defects in general construction. EXAMINATION DEFECT Assembly of sheets Not evenly and uniformly stacked; sheet containi
33、ng manufacturers sealing conditions not visible upon opening. Adjacent sheets stick together to the extent that separation causes tearing or injury to any surface. Splice within sheet. Assembly of roll Not restrained to prevent unwinding. Material not wound uniformly on roll causing soft or uneven e
34、dges, or telescoping of roll. Material not wound on a rigid core, core broken, collapsed, crushed, mutilated. Unwinding of roll (check both sides) When unwound, material sticks together to the extent that unrolling causes tearing or injury to any surface. Material wound unevenly causing wrinkles, sh
35、arp creases, or folds within roll. Roll not continuous; more than 3 splices (4 pieces) in roll or more than 1 splice in any 50 consecutive yards. Splice(s) not evenly made; does not cover entire width of material; comes apart during unwinding of roll. 4.3.2.3 Examination of the end item for dimensio
36、nal defects. The sample unit for this examination shall be one roll or one package of sheets, as applicable. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-131K 9 TABLE V. Examination of the end item for dimensional defects. EXAMINATION DEFE
37、CT Sheets Length or width varies by more than plus inch or minus 18 inch from dimensions specified. Rolls: Width Length Core Varies by more than plus inch or minus 18 inch from width specified. Average length of roll material is less than 200 yards, length of any individual roll is less than 195 yar
38、ds. Length is less than width of roll material, or greater by more than plus 18 inch. Inside diameter less than 3 inches or greater than 3 18 inches. Identification markings Lettering is less than 18 inch in height. More than 2 inches distance between lengthwise group of markings. The complete group
39、 does not appear once in each 18 inches of width of roll. 4.4 Test conditions. Unless otherwise specified in the detail test methods herein, the physical tests contained in this specification shall be made with an atmosphere having a relative humidity of 50 5 percent and a temperature ranging from 7
40、3 3 F. Material shall be considered in equilibrium after exposure to the above conditions for a minimum of 24 hours. 4.5 Sealing instructions for qualification and conformance testing. a. All seals for test purposes shall be not less than -inch wide and shall be effected on a jaw-type heat-sealer (o
41、r equivalent as approved by the qualifying activity) utilizing the sealing conditions recommended by the manufacturer. These conditions shall be limited as follows (see 6.3): (1) Maximum temperature = 500 F (2) Maximum dwell time = 3 seconds (3) Maximum pressure = 60 lbs/sq. in. b. In the securing o
42、f the three 1-inch seam strength specimens from their respective samples, specimens shall not be removed: (1) From points in the sealed sample where seal overlapping has occurred. (2) From points in the sealed sample that were within 1-inch of either end of the sealer jaw during the sealing operatio
43、n.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-131K 10 4.6 Verification of performance requirements. 4.6.1 MIL-STD-3010 test methods. Unless otherwise specified, the tests in table VI shall be conducted in accordance with the identified me
44、thods of MIL-STD-3010. TABLE VI. Test methods. Tests MIL-STD-3010 Test Method No Special Requirement or Exception Note Seam strength 2024 1/ Water vapor transmission rate After room temperature flexing (as received and aged) Transmission rate procedure 2017 3030 2/ - Water vapor transmission rate Af
45、ter low temperature flexing (as received only) (except class 2) Transmission rate procedure 2017 3030 3/ - Puncture resistance 2065 4/ Blocking resistance 3003 - Resistance to curl 2015 5/ Contact corrosivity 3005 6/ Oil resistance (delamination) 3015 7/ Water resistance 3028 8/ Water resistance of
46、marking 3027 9/ 1/ Any evidence of delamination of one ply away from the other in the heat-sealed area shall be cause for rejection. The evaluation shall be limited to the heat-sealed area. 2/ Full stroke shall be used for flexing all class 1 materials. Short stroke (3 inches) shall be used for clas
47、s 2 materials. 3/ Conduct tests as specified in MIL-STD-3010, Method 2017, except that only as received specimens shall be tested. Prior to flexing, test specimens shall be conditioned for at least 30 minutes at -20 2 F and the flexing operation shall be conducted at -20 2 F. 4/ Test shall be run on
48、 five specimens. Material under test shall have the heat-sealable face in contact with the probe. The average value of the five specimens tested shall meet the requirement specified in table I. 5/ Three specimens shall be tested. 6/ If corrosion is evident in the non-contact area, the test shall be
49、repeated with a new test panel. Corrosion in the intermediate area shall not invalidate the test nor be cause for rejection. The barrier material shall be evaluated individually. 7/ Oil conforming to ASTM-D471, and a di-2-ethylhexyl sebacate synthetic oil shall both be used.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-131K 11
