1、I ! “ F-S-44iL -, GGP455b i/ . May 1,1967 SUPERSEDING Int. Fed. Spec. GG-P-00455a June 15,1965 FEDERAL SPECIFICATION PLATES AND FOILS, PHOTOGRAPHIC (PHOTOSENSITIVE ANODIZED ALUMINUM) This specification was approved by the Commissioner, Federal Supply Service, General Services Administration, for use
2、 of all Federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers the requirements for photosensitive anodized aluminum sheets and foils. For purposes of this specification, foils as referred to in this specification is defined as material 0.010 inch and thinner. 1.2 Classif
3、ication 1.2.1 Types and classes. The anodized photosensitive aluminum shall be of the following types and Type I-Impregnated with silver compound (grades A and B). Type II-Coated with compounds other than silver (grades A and B). Class 1-One side printable area. Class 2-Two sides-printable area. 2.
4、APPLICABLE DOCUMENTS 2.1 The following specifications and standards, of the issues in effect on date of invitation for bids, classes. or request for proposal, form a part of this specification to the extent specified herein. Federal Specifications: P-C-437-Cleaning Compound, High Pressure (Steam) Cl
5、eaner. QQ-A-250/lb-Aluminum Alloy 1100, Plate and Sheet. TT-S-735“Standard Test Fluids; Hydrocarbon. CCC-T-191-Textile Test Methods. PPP-B-636-Box, Fiberboard. PPP-T-60-Tape, Pressure-Sensitive Adhesive, Waterproof, for Packaging and Sealing. Federal Standards : Fed. Std. 123-Marking for Domestic Sh
6、ipment (Civilian Agencies). Fed. Test Method Std. No. 151-Metals; Test Methods, as outhned under General Information in the Index of Federal Specifications and Standards and at the prices indicated in (Activities outside the Federal Government may obtain copies of Federal Specifications, Standards,
7、and Handbooks the Index. The Index, which includes cumulative monthly su lements as issued, is for sale on a subscription basis by the Superintendent of Documents, US. Government Printing 8 closures not accomplished by by specified or required methods or materials. Number of boxes or packages per ca
8、rton less than indicated. Interior markings not correct color. Data not in accordance with contract specifkations labels (when Labels or markings illegible, incorrect, incomplete, omitted, or not used) not properly attached. in accordance with contract requirements. Gross weight exceeds contract req
9、uirements. r. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GGP-455b 4.2.2.1.6 Inspection levels and acceptable quality levels (AQLs) for examinations. The inspection levels for determining the sample size, and the acceptable quality levels (AQLs),
10、 expressed in defects per 100 units, shall be as follows: Examination paragraph Inspection level 4.2.2.1.1 I 4.2.2.1.2 5-3 4.2.2.1.3 s-2 4.2.2.1.4 5-4. AQL 1 .o 2.5 2.5 4.0 4.2.3 Testing of the end item. Testing of the end item shall be conducted in accordance with table III for the characteristics
11、as indicated therein. The sample unit, as referenced herein is defined as the amount of material required to perform all tests at one time. Samples for testing the physical characteristics may be drawn at any point after the emulsion or coating operation. Samples for the remaining tests may be drawn
12、 at any point not sooner than immediately prior to the beginning of the packaging operation. 4.2.4.1 All tests specified herein, which require an image, shall have the image created by the con- tact printing of a good quality line cut negative of printed copy onto the sample plate and then processed
13、 in accordance with manufacturers instruction. 4.3 Thickness. The thickness of the plates and foils shall be measured with a thickness gauge or micrometer caliper which is capable of measuring thickness accurately to 0.001 inch. All t.hickness tests shall be conducted on a fully processed plate, 4 b
14、y 5 inches or larger. The thickness shall be measured on five different areas of the plate and the average computed (see 3.2.1). Thickness shall not exceed the limits shown in table I. TABLE III. Characteristics Thickness Anodic layer thickness Processing Resolution Flexibility Abrasion resistance A
15、cid corrosion Heat resistance Salt spray corrosion Accelerated light and I weather resistant Accelerated oxygen aging Oven aged fog Stain resistance Cleaning resistance Low temperature Organic solvents I resistance resistance 6 T Specification reference Req. 3.2.1 3.1.1 3.3 3.5 3.6 3.7.1 3.7.1.1 3.7
16、.1.2 3.7.1.3 3.7.1.4 3.7.1.5 3.7.1.6 3.7.1.7 3.7.1.8 3.7.1.9 3.7.1.10 Test method 4.3 4.3.1 S: 4.3.1.2 4.4 4.5 4.5 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 - Requirement applicable to Indiv. unit x X X X x X X X X X X X X X X X Lot aver. No. of Per sample unit 5 - 9 - 3 1 1 1 1 9 d 9 9 d 1 4 4
17、 1 1 Results pass or fail Reported as aumeri- cally to nearest .O001 in. .O001 in. .isual Lines/hlhl Yisual Cycle Visual “F. Hour Visual Hour Visual No fading Visual Visual Visual r L? Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GG-P-455B 67 W 77
18、99774 0022853 B GG-P-455b 4.3.1 Measurement of the anodic layer thickness of photosensitive anodized aluminum foil. A Light- Section microscope, non-destructive coating thickness tester consisting of a microscope with built-in illuminating device, coaxial coarse and fine adjustment, built-in measuri
19、ng eye piece 16X, pair of objec- tives for 2OOX total magnification, pair of objectives for 400X total magnification, stand with stage plate and extension piece for observing test piece in longitudinal direction, or instrumentation of equivalent accuracy shall be used to determine the thickness of t
20、he anodic layer. Determination for the true thick- ness of the anodic layer shall be done in accordance with the instructions for the use of the Light-Section Microscope or other instrumentation of equivalent accuracy used. The true thickness of the anodic layer shall be based on refractive index 1.
21、60 (see 6.2). 4.3.1.1 Measurement of the anodic layer thickness of photosensitive anodized aluminum plates. A Dermitron nondestructive coating thickness tester, model D-5 or an instrument of equivalent accuracy shall be used to determine the thickness of anodic layer of photosensitive anodized alumi
22、num plates. Determinations for the thickness of the anodic layer shall be done in accordance with the instructions for the use of the Dermitron model D-5 as covered in the detailed operating procedure for case III, or the applicable instructions of other instrumentation of equivalent accuracy used t
23、o make such determinations (see 6.3). 4.4 Resolution test. The equipment and methods specified in the following paragraphs shall be used to determine resolving power. 4.4.1 Test target. The test target shall be of the parallel line type consisting of clear lines on an opaque ground. A suitable test
24、target is the Data Corporation 260 line per millimeter test target or the USAF-1951 (Buckbe Mears Co.) 0.23 to 0.227 line per millimeter test target. Other test targets of quality equal to or better than the test targets specified may be used (see 6.3). 4.4.1.1 Illumination. The light used to expose
25、 the test target shall be a good commercially available 200 watt second strobe light, modified to produce a collimated light source. The strobe light can be modi- fied by cutting a %-inch diameter hole in the center of an opaque piece of cardboard and placing the cardboard over the strobe light so t
26、hat the light passes only through the inch hole. Alternatively, a commercially available number 1 Photoflood bulb in a suitable reflector may be used for the exposure. 4.4.1.2 Met.hod of test. Adjust the modified strobe light so that it will be 24 inches from the test plate to be exposed. Set the st
27、robe for power and discharge once in order to make certain that there is no excess charge in the light. Under darkroom safelight conditions, place in a printing frame an unexposed and unprocessed photosensitive aluminum plate, with its emulsion side of the plate. The lines on the resolution target s
28、hould be positioned perpendicular to the grain of the plate. Excellent contact between the plate and the resolut.ion target should be positioned perpendicular to the grain of the plate. Excellent contact between the plate and the resolut.ion target is essential. There should be no dust either on the
29、 surface of the plate or the target itself. Close the printing frame. If the number 1 Photoflood bulb is used for the exposure, it shall be placed 6 inches from the test plate to be exposed. 4.4.1.3 Exposure duration. The exposure shall be in accordance with manufacturers instructions. 4.4.1.4 Proce
30、ssing. The plate shall be completely processed in accordance with the manufacturers 4.4.1.5 Viewing microscope. The test sample shall be viewed in either a monocular or binocular 250 recommendation. power microscope. 1 4.4.1.6 Resolving power. The criterion of resolution is the ability to count the
31、lines in the body of t.he I image of the test pattern. If the number of the lines is-not in accordance with the resolution rating as I I indicated with the resolution target specified, the resolution is spurious resolution and the image is con- sidered to be not resolved. In some patterns, when the
32、lines cannot be counted in the body of the pat- tern, it is possible to count the lines in the target at the end of the image. In such cases, the image is cansidered to be not resolved. The resolution shall be not less than 150 lines per millimeter for grade A 4.5 Flexibility. The test specimen shal
33、l be 1 inch by 3 inches in size with a thickness of .O32 inch and rods is clamped in a vise while the other end is clamped together with a “C” clamp. The test specimen i 1 and not less than 25 lines per millimeter for grade B. i fully processed. The test specimen is placed between two %-inch diamete
34、r steel rods. One end of the two ! Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GG-P-455b should be held firmly but not pinched. The test specimen is carefully bent 180 degrees to conform to the % inch diameter of one of the rods. After bending, t
35、he specimen is examined visually on both the tension and compression side of the bend. The bent area shall show no flaking, chipping, peeling, or significant loss of legibility. Crazing of the anodic layer is permissible. 4.6 Abrasion. A fully processed specimen plate, 4 inches square with a M inch
36、center hole is placed on the E 100-125 specimen holder of a Taber Abraser, model 174 or equal, with CS-17 Calibrase Vlleels and Wheel Refacer, model 200 or equal. The Taber 174 Abraser is available from Taber 1nst.rument Corporat.ion, North Tonawanda, New York (see 6.2). A total of 1000 grams weight
37、 is placed on the abrad- ing wheel mounting assembly. A pair of freshly refaced CS-17 Calibrase Wheels are mounted on the wheel shaft and the abrading heads are lowered carefully onto t.he specimen. The suction nozzle is ad- justed to % of an inch above the specimen surface. Tlle suction control is
38、set to 50 points on the dial. The cycles and the abraser is then started. Visual examination of the specimen shall be made at each 1000 cycles for grade A material and at each 50 cycles for grade B material. The end point is indicated by the wear effect on the readability of the image. The entire te
39、st shall be run without intermittent refacing of the abrading wheels. There shall be no pronounced loss of readability at. the end of 7000 cycles of grade A material and at the end of 200 cycles of grade B material. 4.7 Acid resistance. A fully processed sample, not less than 3 inches by 5 inches sh
40、all be placed in a glass beaker containing a 3% nitric acid solution, by volume, and maint.ained at room temperature for a period of 24 hours. At the end of the test period remove the sample from the acid and thoroughly wash and dry. The dried sample is then rubbed with a dry cloth to determine whet
41、.her there has been any deterioration or softening of the layer. There shall be no softening of the layer or noticeabIe deterioration of the image. NOTE: When handling nitric- acid extreme caution should be exercised. To make a 37, nitric acid solution, dilute 15 ml of concentrated acid in 483 ml. o
42、f water. Always pour the acid into the water, never pour the water into the acid. Failure to comply wit11 the outlined procedure may cause the acid t.o splatter or tlle glass beaker to shatter, wl1icl1 may cause serious injury to the eyes, face and hands. 4.8 Heat resistance. An electric oven large
43、enough to accommodate a test sample, 2 inches by 4 inches or 4 inches L) 3 ilicles, alld capable of maintaining a continuous heat of 1000 degrees F., shall be used for this test. A fully processed grade A sample, in eitller of tlle sizes specified above is placed in the elec.tric oven whicll Ilas be
44、en preheated to 500 degrees F. The temperature of the oven is then increased to 1000 degrees F., and maintained at this temperature for 10 minutes. Remove the grade A sample from the oven and visuali) exallhe. There silall be no pronouuced legibility loss or degradation. Grade B samples shall be tes
45、ted in the ove11 preheated to 110 degrees F. The temperature is the11 increased to 250 degrees F., and maintained at this temperature for 3 Ilours. Hemove tlle grade B sample from the ove11 and visually examine. There shall be no pronounced legibility loss, fade or degradation. 4.9 Salt spray corros
46、ion. Grade A plates and foils shall be subjected to a 720 hour salt spray (fog) test-, and grade B plates and foils shall be subjected to a 150 hour salt spray (fog) test, in accordance with metllod 811.1 of Fed. Test Method Std. KO. 151. 4.10 Accelerat.ed light. and weather resistance. Four complet
47、ely processed plates, 4 inclles by 5 inches, shall be used for this test. The developed image sllould constitute 70 percent of tlle black. An area across the 4 inch dimension shall be masked wit11 a 1% inch wide and 0.020 incl1 thick, commercially available, black electrical plastic tape No. 520 or
48、equivalent. Tlle tape is wrapped so it overlaps the other side of the plate. The plates shall then be placed ill a Kational Carbon Model X-1-A !7eatherometer, employing copper-clad-sunshine electrodes, Corex D filters, and water spray. Any weat.llerometer, similarly equipped, wldl wi11 give equivale
49、nt results may be used. (The National Carboll Rlodel X-1-A *eather- ometer can be procured from Atlas Electrical Devices Company, 4114 North Ravens-ood Avenue, Chicago 13, I1I.j Tlle grade A plate shall be exposed ill the weatherometer for a period of 400 hours, grade B plate for a period of150 hours alld intermittently sprayed wit11 tap water as outlined in method 580.1- of CCC-T-IO! 1.; r-: .:.hmtio of the masked and unmasked area is made. There shall be no deterioration of the image area or pronounced lo
