1、INCH-POUNDMIL-DTL-82646B (OS) 30 October 2008 SUPERSEDING MIL-P-82646A (OS) 01 March 1985 DETAIL SPECIFICATION PLASTIC FILM, CONDUCT1VE. HEAT-SEALABLE. FLEXIBLE This specification is approved for use by the Naval Sea Systems Command. Department of the Navy, and is available for use by all Department
2、s and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a flexible, heat-sealable, conductive plastic film to be used in sheet form as a protective wrapper or as material of construction for plastic bags. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in
3、 this section are specified in sections 3, 4, or 5 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 every effort has been made to ensure the completeness of this list, document
4、 users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a
5、 part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-286 Propellants, Solid: Sampling, Examination and Testing (Copies of these documents are available
6、 online at http:/assist.daps.dla.mil/ or from the Standardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) Comments, suggestions, or questions on this document should be addressed to DEPARTMENT OF THE NAVY, Indian Head Division, NSWC, Code E11G3, Document
7、Control, 4072 North Jackson Road, Suite 106, Indian Head, MD 20640-5115 OFFICIAL BUSINESS, or emailed to amanda.pennnavy.mil. Since contact information can change, you may want to verify the currency of this information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 8135
8、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82646B (OS) 2 2.2.2 Other Government documents, drawings, and publications. This section is not applicable to this document. 2.3 Non-Government publications. The following documents form a part
9、 of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ Z1.4 Sampling Procedures and Tables for Inspection by Attributes (Copies of ANSI/ASQ Z1.4 are avail
10、able online at http:/www.asq.org/ or ASQ Distribution Center, 5131 S. Third Street, Milwaukee, Wisconsin 53207-6028.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 882 Standard Test Method for Tensile Properties of Thin Plastic Sheeting ASTM E 96 Standard Test Methods for Water Vapor Tran
11、smission of Materials (Copies of these documents are available online at http:/www.astm.org/ or from the American Society for Testing and Materials Customer Service, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, i
12、n the 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 First article. When
13、 specified (see 6.2), a sample (see 6.3) shall be subjected to first article inspection in accordance with 4.2. A first article inspection shall be required if : a. There has been more than 12 months since production of the latest accepted lot, b. There has been a relocation of the production facili
14、ty, c. There has been a major change in personnel or procedures, or d. There has been a change in the source of supplies for the materials used in the manufacture of the plastic film. 3.2 Materials. The film shall be made from such material and by such a process as to assure compliance with the requ
15、irements of this specification. 3.3 Forms. The film shall be furnished in the form of flat cut sheets or in rolls, as specified. Materials in roll form shall be either single thickness or lay flat tubing, as specified by the procuring activity (see 6.2). 3.3.1 Length and width. Length, width and tol
16、erances of rolls and sheets shall be as specified by the procuring activity (see 6.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82646B (OS) 3 3.3.2 Thickness. The film thickness shall be as specified by the procuring activity (see 6.2)
17、 and shall be specified in increments of 0.0010 inch (in.) (0.025 millimeters (mm). The tolerance shall be 20 percent of the specified thickness. 3.4 Chemical and physical properties. 3.4.1 Chemical compatibility. The plastic film shall be compatible with each of the following materials when tested
18、in accordance with 4.6.2: a. A mixture consisting of 75 percent nitroglycerin solvent, 1 to 2 percent 2-nitrodiphenylamine, and 24 percent nominal triacetin. b. Ammonium perchlorate c. HMX 3.4.2 Solvent compatibility. The plastic film shall be capable of meeting 75 percent of each mechanical propert
19、y value specified in 3.4.5 and shall reveal no adverse visual defects after treatment in accordance with 4.6.3 with any of the following solvents: a. 75 percent nitroglycerin solvent as in 3.4.1 (a) b. Acetone c. Diethyl ether 3.4.3 Permeability. When specified in the contract (see 6.2), the water v
20、apor permeability shall not exceed 9.3 grams per square meter (g/m) per 24 hours for 0.0040 in. (0.1000 mm) thick film material. 3.4.4 Electrical resistivity. The electrical resistivity shall not exceed 30,000 ohms per square inch as determined in accordance with 4.6.5. 3.4.5 Tensile strength, break
21、ing strength and elongation. The film tensile strength shall be at least 1,900 psi in the machine direction and 1,700 psi in the transverse direction. The film elongation shall be at least 200 percent in the machine direction and 180 percent in the transverse direction. 3.5 Identification. 3.5.1 Mat
22、erial. The film shall be marked to show the manufacturers designation, the date of manufacture (month and year), the specification number, and the notation “seal other side“, if applicable. The identification shall appear in continuous rows of constantly recurring symbols in the machine direction fr
23、om one end of the sheet to the other. Symbols shall be of a clearly legible contrasting color with that of the material and shall be not less than 0.10 in. (2.5 mm) nor more than 0.50 in. (12.7 mm) high. The symbols shall be applied by suitable means using marking fluid that is not deleterious to th
24、e film. The marking fluid used shall be as conductive as, or more conductive than. the basic material. The marking shall not be obliterated by normal handling or the action of water. 3.5.2 Identification sheet. An identification sheet shall accompany each roll or bundle and shall contain specificati
25、on number, manufacturers name, manufacturers designation, lot number, and date of manufacture (month and year). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82646B (OS) 4 3.6 Workmanship. The film shall be uniformly constructed and free fr
26、om pinholes, tears, cuts, sharp creases, or other imperfections which might impair the usefulness of the film. The color is optional but it must be uniform and not mottled. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. F
27、irst article inspection (see 4.2) b. Quality conformance inspection (see 4.3) c. Periodic production inspection (see 4.4). 4.2 First article. 4.2.1 First article sample. Unless otherwise specified, a first article sample shall consist of a roll of film 50 yards (yd) (45.7 m) long and 36 in. (91.4 cm
28、) wide upon which first article testing is desired. The sample shall be tested by the manufacturer or forwarded to a testing facility as directed by the procuring activity (see 6.2). If the sample is to be forwarded to a testing facility, the sample shall be plainly identified by a securely attached
29、 durable tag marked with the following: “Plastic Film, Conductive, Heat-Sealable, Flexible, For Ordnance Use. Sample for First Article Test“; Manufacturers name and address; manufacturers designation; date of manufacture: and “Submitted by (name) (date) for first article test in accordance with the
30、requirements of MIL-DTL-82646 under authorization (reference authorizing letter)“. 4.2.2 First article testing. First article testing shall be as specified in Table I. Failure to meet any requirement shall be cause for rejection of the first article sample. The contractor shall prepare a report givi
31、ng the result obtained for all inspections and tests performed or a certified statement that the first article sample meets all the first article requirements of this specification. TABLE I. First article inspection. Inspection Requirement paragraph Method paragraph Examination 3.2, 3.3, 3.5, 3.6 4.
32、5 Chemical compatibility 3.4.1 4.6.2 Solvent compatibility 3.4.2 4.6.3 Electrical resistivity 3.4.4 4.6.5 Film tensile strength, breaking strength and elongation 3.4.5 4.6.6 4.2 3 First article retest. Material rejected by the Government testing agency may be retested for first article acceptance (s
33、ee 6.3.1). 4.2.4 Retention of first article approval. Retention of first article approval for products shall be maintained by periodic verification to determine compliance of the first article product with the requirements of this specification. Unless otherwise specified by the procuring activity,
34、periodic verification shall be by certification and such certification shall be at intervals of not more than 2 years. 4.3 Quality conformance inspection. The material shall be subjected to all the following inspections and tests for acceptance. When specified in the contract (see 6.2). the contract
35、or shall prepare a report giving the results obtained for all inspections and tests performed and a certified statement that the lot meets all the requirements of this specification (see 6.2.2). 4.3.1 Sampling for quality conformance inspection. Provided by IHSNot for ResaleNo reproduction or networ
36、king permitted without license from IHS-,-,-MIL-DTL-82646B (OS) 5 4.3.1.1 Lot. A lot shall consist of 50,000 yd2(41,800 m2)of material or less, manufactured by the same process, from the same components, by one manufacturer, at one plant and offered for delivery at one time. 4.3.1.2 Sampling for exa
37、mination Samples for examination shall be selected in accordance with inspection level II, single sampling, normal inspection of ASQ Z1.4. Sufficient material shall be selected at random so that the required sample yardage is obtained. 4.3.1.3 Sampling for tests. For the purpose of maintaining conti
38、nuous inspections, test samples shall be taken from material packed for shipment. The lot (4.3.1.1) shall be divided into five equal segments. Five sample rolls shall be drawn from the lot for test, one from each of the five equal segments. Each test sample consisting of 6.0 yd2(5.0 m2) shall be ass
39、igned a number from one to five in order of manufacture. 4.4 Periodic production inspection. When specified in the contract or order (see 6.2). periodic production samples shall be forwarded to an activity specified by the procuring activity (see 6.2) for periodic production inspection. 4.4.1 Period
40、ic production samples. Periodic production samples shall be selected from plastic film that has passed the quality conformance inspection of 4.3. The sampling plan shall be as specified by the procuring activity (see 6.2). 4.5 Examinations. Sample material shall be visually inspected to verify confo
41、rmance with this specification. Defect classification shall be in accordance with Table II. TABLE II. Types of defects. Examination Defects Form Rolled or flat cut not as specified, lay flat dimensions or film thickness not as specified Cleanness Not clean Workmanship Embrittlement or any hole, tear
42、, cuts, chafed spot, or other defect that would impair usefulness of film Construction Not uniform; pinholes, cracks, blisters, scratches, mottling, folds, foreign matters, gels, or fish eyes Color Not uniform Identification Marking not as specified. Identification sheet missing. 4.5.1 Examination f
43、or roll or package defects. The lot size for this examination shall be expressed in units or packages of sheets. 4.5.2 Examination for appearance and workmanship. The lot size for this examination shall be expressed in units of square yards of film. Defects shall be scored only once for each occurre
44、nce within a square yard. 4.6 Tests. Film samples shall be subjected to the following tests. Failure of any sample to pass any test shall be cause for rejection of the lot. 4.6.1 Test condition. Prior to testing, film samples shall be conditioned for 24 hours minimum in a moving atmosphere having a
45、relative humidity of 50 5 percent and n temperature of 21 to 24.5 C (70 to 76 F). 4.6.2 Chemical compatibility. The film shall be tested for compatibility with the chemicals listed in 3.4.1. The test procedure shall be in accordance with Method 7081 of FED-STD-206, with the following exceptions: Pro
46、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82646B (OS) 6 a. The test apparatus of Method 403.1 of MIL-STD-286 shall be used. b. The composite specimen shall consist of 1.0 gram (g) of dried plastic and 1.0 g of dried chemical. c. The indivi
47、dual (control) specimens shall consist of 2.0 g of dried plastic and 2.0 g of dried chemical, respectively. The plastic shall be considered compatible if the measured compatibility is not greater than 5 cubic centimeters (cm3) where: Compatibility = E (F + G) 2 Where: E = cm3of gas evolved by the pl
48、astic-chemical mixture F = cm3of gas evolved, by the plastic alone G = cm3of gas evolved by the chemical alone 4.6.3 Solvent compatibility. Film samples shall be immersed in the solvents (a separate specimen for each solvent) specified in 3.4.2 for 7 days at 24 3C (75 5 F). Visual examination after
49、treatment shall reveal no adverse defects. The treated film shall be tested in accordance with 4.6.6 to determine compliance with 3.4.2. 4.6.4 Permeability. The water vapor permeability shall be measured in accordance with ASTM E 96 or an equivalent test approved by the procuring activity. The test chamber or room shall be maintained at 35 1C (95 2 F) and 95 3 percent relative humidity and shall be provide
