ASTM_D_3076_-_00_2010.pdf

Designation:D307600(Reapproved 2010)Standard Test Methods forEffective Crimping on Outside Crimped Valves of AerosolContainers1This standard is issued under the fixed designation D3076;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover the effective crimping onoutside crimped valves within the wide parameters of contain-ers and valves available.1.2 The test methods appear in the following order:SectionsOptical Comparator Test Method4 to 7Caliper Test Method8 to 121.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D996 Terminology of Packaging and Distribution Environ-mentsD3064 Terminology Relating To Aerosol Products3.Terminology3.1 General definitions for packaging and distribution envi-ronments are found in Terminology D996.3.2 General definitions of terms relating to aerosol productsare found in D3064.OPTICAL COMPARATOR TEST METHOD4.Summary of Test Method4.1 This test method involves drawing a projected,enlargedprofile of the container and valve,then removing the valve anddrawing the projected profile of the container finish.Measuringthe resultant void and subtracting the dimensions of theessentially noncompressed components from this value resultsin the value representing the compressed thickness of the valvesealing gasket.5.Significance and Use5.1 This test method provides information for the establish-ment of quality control procedures on filling lines.6.Apparatus6.1 Optical Comparator.6.2 Clamping Jig,fastened to the comparator bench.6.3 Grinder,electric,small enough to be hand held.7.Procedure7.1 Crimp a valve on an empty bottle with the line crimperset at normal operation,and clamp the bottle in the jig on thecomparator bench.7.2 Draw the projected,enlarged image on tracing paper.NOTE1Grid ruled tracing paper makes the tracing much easier.7.3 Without disturbing the paper or bottle,cut a wedge outof the valve with the electric grinder,and remove the valve.7.4 Trace the projected image of the container alone on thesame paper.7.5 Measure the void between the two silhouettes(Fig.1and Fig.2).Subtract the dimensions(multiplied by theenlargement factor of the essentially uncompressed compo-nents of the valve)from this value to obtain the thickness of thecompressed gasket multipled by the enlargement factor,andconvert this reading into percent compression.CALIPER TEST METHOD8.Summary of Test Method8.1 This test method involves a measurement of the heightof the uncrimped portion of the valve.The points between1These test methods are under the jurisdiction of ASTM Committee D10 onPackaging and are the direct responsibility of Subcommittee D10.33 on MechanicalDispensers.These test methods were originally developed by the ChemicalSpecialties Manufacturers Assn.Current edition approved Oct.1,2010.Published November 2010.Originallyapproved in 1972.Last previous edition approved in 2005 as D3076 00(2005).DOI:10.1520/D3076-00R10.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 which the measurement is made are self-determining when thecalipers are held parallel to the side of the valve.Meandimensions are used in calculating the effective crimp height.9.Significance and Use9.1 This test method provides information for the establish-ment of quality control procedures on filling lines.10.Apparatus10.1 Calipers,vernier or dial.11.Procedure11.1 Select a filled bottle from the filling line at random.11.2 Mark off three points,120 apart,on the valve ferrule,carefully avoiding areas where stake marks occur.11.3 Holding the calipers parallel to the side of the valve,place the inner jaw on the top of the valve.11.4 Slide the outer jaw up the valve skirt until it stops,dueto the abrupt directional change in the skirt.11.4.1 In collect-crimped bottles a line appears at the top ofthe crimped skirt area.This is made by the top of the collectsegment,and is the point at which direction changes abruptlyand the caliper will hang up.11.4.2 Roll-capped bottles will also produce this horizontalline at the top of the crimped area.Depending upon the facialcontour of the rollers,this li