1、IL-P-157A 13 9997706 0290780 4 e 7532) .+ - MIL-P-lS7A (MR) 2 APRIL 1963 SUPERSEDING 30 NOVEMBER 1944 JAN-P-167 MILITARY SPECIFICATION PAPER, ONIONSKIN 1. SCOPE 1.1 This specification covers one type .of onionskin paper for use in ammunition items (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 The following
2、 documents of the issue in effect on date of invitation for bids or re- quest for proposal, form a part of this speci- fication to the extent specified herein. SPECIFICATIONS FEDERAL uu-P-31 - Paper ; General Speci- fications and Meth- ods of Testing. STANDARDS MILITARY MIMTD-105 - Sampling Procedur
3、es and Tables for In- pection by Attri- butes. MIL-STDy129 - Marking for Shipment and Storage. (Copies of specifications and standards required by suppliers in connection with specific procurement unctions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2
4、 Other pubications. The following docu- ments form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of in- vitation for bids or request for proposal shall apply. Uniform Freight Classification Rules (Application for copies should be
5、 addressed to the Uniform Freight Classification Committee, 202 Union Station, Chicago 6, Illinois.) 3. REQUIREMENTS 3.1 Material. The product shall consist of rag stock and bleached or partially bleached chemical wood pulp, without the admixture of ground or unbleached fibers, constructed in such a
6、 manner as to meet the require- ments of this specification. 3.2 Form. Unless otherwise stated in the contract or order, the onionskin paper shall be in the form of sheets (see 3.5). ) 3.3 Color. The color of the paper shall be white to buff. Conformance shall be deter- minued in accordance with 4.G
7、.1. 3.4 Finish. The finish of the paper shall be glazed. Conformance shall be determined in accordance with 4.5.2. 3.5 Sheet size. The sheets of onionskin paper shall be 22 +- s6 by 17 f ?/ia inches in size, unless otherwise specified in the contract or order (see 6.2). Licensed by Information Handl
8、ing ServicesMIL-P-157A 13 m 9977706 0290781 b m Properts Requirements Thickness, inch Weight, pounds per 1000 sheets . 0.0015 2 0.0005 16 2 1.0 12 30 Bursting strength, points, minimum Rag content, percent minimum . MIGP-157A (RIR) Test paragraph 4.5.4 4.5.5 4.6.6 4.6.7 3.6 Property values. The onio
9、nskin paper shall conform to the requirements listed in table I, when tested in accordance with the applicable test procedures of paragraph 4.5. TABLE I . Ash, percent, maximum Acidity (as so,) or alkalinity (as NaOH) cc maximum 4.5.8 2.0 0.20 I 4.6.9 I I 3.7 Workmanship. The onionskin .paper shall
10、be uniform in quality and construction, free from foreign matter, cuts, holes, wrink- les, chafed spots, or other defects which might impair the usefulness of the material for the purpose intended. The sheets shall be evenly stacked and shall not stick to- gether to the estent that the material wi!l
11、 be damaged when the sheets are separated. 4. QUALITY -4SSURANCE PROT-ISIOSS 1000 sheets. Not more than 20 sheets shall be examined from any one stack or package of sheets except when required for deter- mining the count of sheets. 4.3.1 Sampling for tiid item csantiilation. Sr.mples for end item ex
12、amination shall be selected in accordance with inspection level L-5 of MIL-STD-105 and at the acceptable quality levels shown in the *classification of defects (see 4.4.1). 4.1 Responsil)ilit for inspection. Ldese otherwise specified in the contract or pur- chase order, the supplier is responsible f
13、or ments as specified herein. Except as other- wise specified, the supplier may utilize his own facilities or any commercial laboratory 4.3.2 Sampling for inspection of prepara- tion fol. delive,y. Samples for inspection of packaging, packing and marking shall be 67 of R-IIL-STD-105 and at the quali
14、ty levels sllown in 4.4.2, the performance of all inspection require- in accordance Lvith inspection le*el acceptable to the Government. The Govern- ment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that sup
15、plies and services conform to prescribed requirements. 4.2 Lot. A lot shall consist of all the onion- skin paper which has been manufactured from the same types and proportions of in- gredients, by the same process, by one maii- ufacturer and submitted for acceptance at one time. 4.3 Sampling. For p
16、urposes of sampling, the unit shall be one stack or package of 2 4.3.3 Sa?npliny for tests. Sample units foi testing shall be selected in accordance with inspection level 64 of MIL-STD-105, ac- ceptance number zero. The specimen sample shall consist of 25 sheets (each 22 by 17 inches) to be taken fr
17、om each sample unit se!ected for test purposes. 4.4 Inspection. 4.4.1 End item exiination. The samples selected as in 4.3.1 shall be examined in ac- cordance with the classification of defects and at the acceptablg quality levels shown in tables II and III. Licensed by Information Handling ServicesM
18、IL-P-157A 13 9999706 029O2 m Examine Form Cleanliness Blocking Workmanship MIGP-157A (MR) Defect Not in sheet form or as specified. Not clean. Material shows dirt, sand, grit, oil or other foreign matter. Adjacent sheets slick together to the extent that they are damaged when Any cut, hole, wrinkle,
19、 chafed spot of other defect affecting serviceability. separated, TABLE II. Classificatioit of defects (Acceptable Quality Level 2.6 percent defective) Exunine Stacking Sheet count Defect Not evenly stacked. Average sheet count of stacks vanes from 1000 by more than 26 sheets. 4.4.2 Insipectwn of pr
20、epaTatkn for deli- verv. The packaging, packing and marking of the onionskin paper shall be examined to determine conformance to the requirements of section 5 of this specification, and as re- quired by specifications referenced therein. The acceptable quality level shall be 4.0 per- cent defective.
21、 4.5 Test procedures. 4.5.1 Color. Compliance with color require- ments shall be determined by visual exa- mination. 4.5.2 Finish. Compliance with finish re- quirements shall be determined by visual examination. 4.5.3 Sheet size. Three sheets shall be measured by any suitable means giving pre- cisio
22、n to s6 inch for length and width de- terminations. The average shall be reported as the length and width values. 4.5.4 Thickness. Compliance with thick- ness requirements shall be determined in ac- cordance with method 173 of Federal Speci- fication UU-P-31. 4.5.5 Weight. Compliance with weight re-
23、 quirements shall be determined in accord- ance with method 110 of Federal Specifica- tion UU-PSI. 4.5.6 Bursting styength. Compliance with bursting strength requirements shall be de- termined in accordance with method 112 of Federal Specification UU-P-31. 4.5.7 Rug content. Rag content shall be de-
24、 termined in accordance with method 300 of Federal Specification UU-Pal. 4.5.8 Ash content. Ash content shall be determined in accordance with method 202 of Federal Specification UU-P-31. 4.5.9 Acidity (as SO,) or alkalinity (as NaOH). Acidity or alkalinity shall be deter- mined as follows: (2 deter
25、minations shail be made). Sufficient square shaped pieces (not over inch in length or width) shall be cut from material as received so as to provide approximately 5 grams of air dried shredded material. This material shall be placed in a 500 milliliter Pyrex Erlenmeyer (or equivalent) flask and 250
26、ml. of distii- led water added. To negate the tendency of the pieces to float on the surface, the water is added gradually and the flask well shaken. After the water is added, affix to the flask a foil covered, rubber stopper through which a glass tube about 30 inches in length has been inserted to
27、serve as a condenser. Al- ternately a 600 ml. Pyrex (or equivalent) 3 Licensed by Information Handling ServicesMILP-157A (MR) Erlenmeyer flask with a ground glass top and a water cooled condenser with a ground joint to fit the flask may be used. Place the flask and contents on a hot plate and reflux
28、 gently for 1 hour with occasional shaking to ensure that all pieces are immersed in the water. Immediately pour the contents of the flask on a Buchner funnel (without other filtering medium) receiving the solution in a 400 ml. Pyrex (or equivalent) beaker, Rinse twice using 25 ml. of hot ciistilled
29、 water each time. Cover the beaker with a watch glass and cool to room temperature rapidly. Run a blank in the same manner described for the actual determination using 250 ml. of distilled water without the sani- ple. Cool the water to room temperature ancl with a calibrated pH meter determine the p
30、H value of the blank solution. Titrate the sample extract to the pH value of the blank using 0.01N HCL solution, or 0.01N NaOH solution whichever is appropriate. Calcu- late any acidity in terms of SO, or alkalini- ty in terms of NaOH by the following for- mulae, Report individual results of all tes
31、t- ing. TXNX4 w Percent SO, = where : T = ml. NaOH required to titrate Le extract to the pH of the blank N = Normality of NaOH solution W = Weight (in grams) of test speci- men or TXNX4 W Percent NaOH = where : T = ml. of HCL required to titrate the extract to the pH of the blank N = Normality of HC
32、L solution W = Weight (in grams) of test speci- men 5. PREPARATION FOR DELIVERY 5.1 Packaging. Packaging shall be level C or as specified in the contract or order. 5.1.1 Level C. Stacks of onionskin paper (see 4.3) shall be packaged in a manner which will afford adequate protection against deteriora
33、tion and daiiiage during shipment from the supply source to the first receiv- ing activity for immediate use o? for con- trolled humidity storage. 5.2 Packing. Packing shall be level C or as specified in the contract or order. 5.2.1 Level C. Packing shall be accom- plished in a manner which will aff
34、ord ade- quate protection against damage during shipment within the Continental United States to the first receiving activity. This level as a minimum will conform to appli- cable carrier rules and regu1at:ons. 5.3 Marking. Unless otherwise specified by the- procuring activity, individually pack- ag
35、ed stacks of sheets and exterior contain- ers shall be marked for shipment in accord- ance with Standard MILSTD-129, and as follows : “Paper, Onionskin “Specification MIL-P-lEi7A( MR) ” Size Quantity Contract or order number Weight Name and address of manufacturer Contract or order number Month and
36、year of manufacture 6. NOTES 6.1 Intended uses. The onionskin paper covered by this documen is primarily in- tended for use in ammunition i.tems for such applications as separator discs to prevent explosives dust from one component from 4 Licensed by Information Handling ServicesMILP-lSIA(MR) coiit.
37、aciing anot.her explosive or other such component 6.2 Ordering data. Procurement documents should specify the following: (a) Title, number and date of this specificztion. (b) Sheet size, if other than 22 by 17 inches (see 3.4). Sot.ice. When Government drawings, specification, or other data are used
38、 for any purpose other than in connection with a definitely related Government procurement operation, the United States Govern- ment thereby incurs no responsibility nor obligation whatsoever; and the fact that the Government may have formulated, furnished, or in any way supplied the said drawings,
39、specifications, or other data is not to be regarded by implication or other- wise as in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use, or sell any patented invention that may in any way be related thereto. Custodian: Preparing activity: Arm y-MR Army-MR Project No. 8135-AO14 Licensed by Information Handling Services
