ASTM D Standard Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels. Standard Practices for. ASTM D – Designation: D – 95 (Reapproved ) Standard Practices for Producing Films o. Standard ASTM D The following devices are in accordance with ASTM D : ZAA Automatic Film Applicator Coater.
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The blade holder shall be designed to accommodate common types of applicator blades and to accept weights for loading the applicator blade. Subsequent reproduction of the same operating conditions should give the same? NOTE 13—The width of the spray pattern should be considerably wider than the width of the test panel to assure spray uniformity on the test panel. Summary of Practice If the coating thickness is too high, coat another panel using a faster rate of panel withdraw.
Insert the blade in the blade holder and load the holder with weights if needed. If the coating thickness is too high, select an applicator blade with a smaller clearance and coat another panel. Last previous edition D — 92a. Summary of Practice 9. The panel holder or the gun mount traverse speed shall be adjustable from 7. asm
Standard ASTM D823
It is more reliable for producing uniform? Summary of Practices 3.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. NOTE 5—Rectangular containers F-style can with lid cut off are useful because the smaller exposed surfaces of the liquid coating reduces volatile loss. ASTM D e1. As the auxiliary bar is pushed by the applicator, it should press the substrate? A superscript epsilon e indicates an editorial change since the last revision or reapproval.
NOTE 7—The operating conditions viscosity, percent of nonvolatile matter, and rate of withdrawal are speci?
It is particularly important that it be used in the evaluation of metallic coatings for appearance properties, such as gloss and color. A machine equipped with a programmable system can index the spray gun vertically for multiple passes and for multiple coats with selective time delay.
Reduce the material to a viscosity suitable for astmm. Use of a multiple hook will permit dipping several panels at one time. NOTE 9—Rigid panels shall be cleaned in an approved manner. NOTE 6—The test panels should not exceed mm 12 in.
The base plate shall hold paper charts? Adjust the air pressure, material? Typical machines are shown in Fig. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, atsm entirely their own responsibility.
Ashm the temperature of the material in the container at the time of application. If the coating thickness is too high, coat another panel with fewer passes of the spray pattern or, if this is not feasible, reduce the material further with thinner. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Originally published as D — 45 T. Your comments will receive careful consideration aatm a meeting of the responsible technical committee, which you may attend.
Begin by aiming the gun at right angles to the panel so that the spray pattern is just beyond the edge of the panel. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phoned8223or service astm.
The values given in parentheses are for information only.
A number in parentheses indicates the year of last reapproval. NOTE 11—Paper charts should be taped down to prevent curling of the edges that causes the wet?
ASTM D – Zehntner GmbH
Suitable apparatus, is shown in Fig. Preparation of Apparatus 6. The viscosity range for normal? Hold the spray gun tip to mm 10 to 12 in.