ASTM_D_6655_-_01_2007.pdf

Designation:D665501(Reapproved 2007)Standard Terminology Relating toMechanical Pump Dispensers1This standard is issued under the fixed designation D6655;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 The terms found in this terminology relate to thenomenclature used in the packaging industry.1.2 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.Terminologyaccumulative pump,na mechanical pump dispenser thataccumulates internal pressure by means of a valving-systemthat maintains a high velocity flow of the product no matterwhat the actuation velocity that results in a consistent finemist spray.atomization,nthe separation process of liquid into smallparticles.clogging,vthe restriction of normal product flow.Mostcommonly due to product drying in a product flow passagearea of the mechanical break-up system.exit orifice,nthe final passage found in the insert that theliquid flows through before exiting the dispensing systemwhere the size of the orifice diameter can determine the sizeof the spray particles and spray pattern.fine mist pump,na mechanical pump dispenser that atom-izes liquid into a fine mist.An accumulative pump is themost common type of fine mist pump.force to actuate(FTA),nthe peak force that corresponds tothe pressure on the finger that a consumer feels upon fullyactuating the mechanical pump dispenser.functional compatibility,neffect of physical or chemicalinteraction between a consumer product and a specific pumpmechanism where problems typically include deformationand degradation of components that result in a lowerperformance of the mechanical pump dispenser.hot spot,nthe area of a spray where the product concentra-tion is high which can be visibly seen on a spray pattern asa concentrated stain on the alcohol-sensitive paper.mechanical break-up unit(MBU),n a design structurefound in the insert that forces product to flow in a swirlingmethod for producing specific spray characteristics.mechanical pump dispenser,na small,finger-or hand-actuated,mechanical device used to dispense(spray,stream,or flow)product from a container that may be,generally,held in ones hand.output per stroke(OPS),nthe amount of product dispensedwith one complete actuation when measured in terms ofweight(grams)or volume(microliter,milliliters,or ccs).priming,vthe initial process of evacuating air from themechanical pump dispenser and replacing it with product sothat the dispensing process may begin.retention of prime,nability of a pump to retain its prime anddispense a full dose without re-priming after a period ofnon-use.spitting,vdispensing of a low dose of product when bothproduct and air are dispensed resulting in the pump gener-ating a distinctive spitting noise.spray particles/droplets,nthe spherically-shaped liquid ob-jects that are the result of the atomization process created bya dispensing system with the size of these particles ordroplets usually expressed in microns.spray pattern,npattern,preferably round,dispensed onto aflat surface when this surface is positioned so that it willintercept a spray at a 90 degree angle at a specific distance.standard sprayer,ngenerally,a finger-actuated,higher-output(greater than 500 mcl)pump that delivers a coarserspray than a fine mist sprayer.streaming,vdispensing of a product in the form of a jet or astream.stroke length,nthe total distance of travel for the mechani-cal pump dispenser from where the mechanism of a pumpsits at rest to where it is fully depressed.1This terminology is under the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of Subcommittee D10.33 on MechanicalDispensers.Current edition approved April 1,2007.Published May 2007.Originallyapproved in 2001.Last previous edition approved in 2001 as D6655 01.DOI:10.1520/D6655-01R07.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 strokes to prime(STP),nthe total number of completeactuations needed to obtain a full discharge of product on theinitial use of package.PARTS OF A FINGER-ACTUATED MECHANICALPUMP DISPENSERNote 1See Figs.1 and 2.actuator,button,or spray head,nthe fingerpad that theconsumer depresses to dispense product.ball or spherical valve,ndepending on the design of thepump,it may be used as the upper or lower valve,or both.body,housing,or accumulator,nthe primary chamber forcreating the positive and negative pressure during thepumping action.closure or screw cap,na fitment that attaches the pump tothe container.dip tube,na tube which pro