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About the blister industry

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Time of issue:2017-12-01 14:07
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(Summary description)Thevacuumblistermoldingprocesswasknownasearlyasthebeginningofthe20thcentury,butitsapplicationinindustrialproductionwasonlyafterthe1940s,anditonlydevelopedinthe1960s.Inthepast20years,ithasdevelopedintooneofthemostimportantmethodsforprocessingpackagingmaterials.Thereasonfortherapiddevelopmentofthistechnologyisthecontinuousinnovationofvacuumformingtechnologyandequipment,aswellasthedevelopmentofnewsheetswithformingproperties;itisalsodeterminedbythedevelopmentofthepackagingindustryandthecharacteristicsofvacuumformingpackaging.Vacuumformingisoneofthemostcommonlyusedformingmethodsforplasticpackagingcontainers.Itisasecondarymoldingtechnologythattakesthermoplasticsheetsasthemoldingobject.Inforeigncountries,vacuumblistermoldingisanoldmoldingprocess.Duetocontinuousdevelopmentandchanges,ithasbeenhighlyautomatedandmechanized,andithasachievednowasteand100%ofrawandauxiliarymaterialsintoproducts.Themoldingsystemengineeringoffullassemblylineproduction.Vacuumblistermoldinghasdifferencesinthefollowingconditions:·Theremoldingtemperaturerequiredforheatingthemoldingmaterialtoahighlyelasticstate·Themoldingmoldusuallyusedinblistermolding·Theproductiscooledtoacoolingtemperaturethatdoesnotchangeinsize·DimensionalstabilityInmostcases,post-processingofblistermoldingisalsonecessary,suchas:·trimming·welding·bonding·heatsealing·coating·metalspraying·flocking·printingvacuumformingNowithasbecomeagenerallyacceptedtermintheprocessingfield:"vacuumforming".And"pressureforming"(pressureforming)referstosomespecialprocessesusingairpressure."Thermoforming"(thermoforming)isageneraltermforvariousthermoplasticmoldings(includingvacuumandpressure,ormixedmolding).1.Theadvantagesanddisadvantagesofvacuumblistermolding.Judgewhetheranyoneoftheprocessingandproductionprocessesissuccessful,comparewithanotherprocessingmethod,whetherthecostoftheproductsproducedbythismethodisappropriate;orareproducedbythesetwomethodsThecostoftheproductisthesame,butthequalityoftheproductproducedbythismethodisimproved.Inmanyapplications,injectionmoldingorblowmoldingcompeteswithvacuummolding.Butasfaraspackagingtechnologyisconcerned,unlesscardboardisusedaspackagingmaterial,thereisnootherprocessingmethodthatcancompetewithvacuumformingtechnology.Themainadvantageofvacuumblistermoldingisitsengineeringeconomy.Forproductssuchascompositesheet,foamsheetandprintingsheet,themoldshouldbechangedappropriatelytoreplacethevacuumsuctionmoldingmachine.Productswithverythinwallscanbevacuummoldedwithhighmeltviscositysheets,whileinjectionofthesamewallthicknessrequireslowmeltviscositypellets.Forasmallnumberofplasticparts,thefavorablemoldcostisanotheradvantageofvacuumblistermolding.Forlarge-volumeparts,theproductcanachieveverythinwallthicknessandthehighoutputratioofthevacuumblistermoldingmachineisveryadvantageous..Thesmallestpartsthatcanbeproducedbyvacuumblistermoldingarepackagingmaterialsfortabletsorbatteriesforwatches.Itcanalsoproduceverylargeproducts,suchasgardenpoolswithalengthof3to5meters.Thethicknessofthemoldingmaterialcanrangefrom0.05to15mm,andforfoamedmaterials,thethicknesscanreach60mm.Anykindofthermoplasticsormaterialswithsimilarpropertiescanbevacuummolded.Thematerialusedforvacuumblistermoldingisasheetwithathicknessof0.05to15mm,andthesesheetsaresemi-finishedproductsmadeofpelletsorpowder.Therefore,comparedwithinjectionmolding,therawmaterialforvacuumblistermoldingwillincreaseadditionalcosts.Itisnecessarytocutthesheetduringvacuumforming,whichwillproducescraps.Aftercrushingtheseleftoversandmixingthemwiththeoriginalmaterials,theycanbemadeintosheetsagain.Invacuumforming,onlyonesurfaceofthesheetisincontactwiththevacuumformingmold,soonlyonesurfaceisconsistentwiththegeometricdimensionsofthevacuumformingmold,andthecontouroftheothersurfaceoftheproductisobtainedbydrawing.

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About the blister industry

Categories:News
Author:
Origin:
Time of issue:2017-12-01 14:07
Views:

Information

The vacuum blister molding process was known as early as the beginning of the 20th century, but its application in industrial production was only after the 1940s, and it only developed in the 1960s. In the past 20 years, it has developed into one of the most important methods for processing packaging materials. The reason for the rapid development of this technology is the continuous innovation of vacuum forming technology and equipment, as well as the development of new sheets with forming properties; it is also determined by the development of the packaging industry and the characteristics of vacuum forming packaging. Vacuum forming is one of the most commonly used forming methods for plastic packaging containers. It is a secondary molding technology that takes thermoplastic sheets as the molding object. In foreign countries, vacuum blister molding is an old molding process. Due to continuous development and changes, it has been highly automated and mechanized, and it has achieved no waste and 100% of raw and auxiliary materials into products. The molding system engineering of full assembly line production. Vacuum blister molding has differences in the following conditions: · The remolding temperature required for heating the molding material to a highly elastic state · The molding mold usually used in blister molding · The product is cooled to a cooling temperature that does not change in size · Dimensional stability In most cases, post-processing of blister molding is also necessary, such as: · trimming · welding · bonding · heat sealing · coating · metal spraying · flocking · printing vacuum forming Now it has become a generally accepted term in the processing field: "vacuum forming". And "pressure forming" (pressure forming) refers to some special processes using air pressure. "Thermo forming" (thermo forming) is a general term for various thermoplastic moldings (including vacuum and pressure, or mixed molding). 1. The advantages and disadvantages of vacuum blister molding. Judge whether any one of the processing and production processes is successful, compare with another processing method, whether the cost of the products produced by this method is appropriate; or are produced by these two methods The cost of the product is the same, but the quality of the product produced by this method is improved. In many applications, injection molding or blow molding competes with vacuum molding. But as far as packaging technology is concerned, unless cardboard is used as packaging material, there is no other processing method that can compete with vacuum forming technology. The main advantage of vacuum blister molding is its engineering economy. For products such as composite sheet, foam sheet and printing sheet, the mold should be changed appropriately to replace the vacuum suction molding machine. Products with very thin walls can be vacuum molded with high melt viscosity sheets, while injection of the same wall thickness requires low melt viscosity pellets. For a small number of plastic parts, the favorable mold cost is another advantage of vacuum blister molding. For large-volume parts, the product can achieve very thin wall thickness and the high output ratio of the vacuum blister molding machine is very advantageous. . The smallest parts that can be produced by vacuum blister molding are packaging materials for tablets or batteries for watches. It can also produce very large products, such as garden pools with a length of 3 to 5 meters. The thickness of the molding material can range from 0.05 to 15mm, and for foamed materials, the thickness can reach 60mm. Any kind of thermoplastics or materials with similar properties can be vacuum molded. The material used for vacuum blister molding is a sheet with a thickness of 0.05 to 15 mm, and these sheets are semi-finished products made of pellets or powder. Therefore, compared with injection molding, the raw material for vacuum blister molding will increase additional costs. It is necessary to cut the sheet during vacuum forming, which will produce scraps. After crushing these leftovers and mixing them with the original materials, they can be made into sheets again. In vacuum forming, only one surface of the sheet is in contact with the vacuum forming mold, so only one surface is consistent with the geometric dimensions of the vacuum forming mold, and the contour of the other surface of the product is obtained by drawing.

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Product features of blister packaging

Thesheetusedforblisterpackagingiscalledrigidfilmorfilm.Commonlyusedare:PET(polyethyleneterephthalate)rigidfilm,PVC(polyvinylchloride)rigidfilm,andPS(polystyrene)rigidfilm.PShardfilmhaslowdensity,poortoughness,andiseasytoburn.Itwillproducestyrenegas(aharmfulgas)whenburned,soitisgenerallyusedtoproducevariousindustrialblistertrays.PVChardfilmhasmoderatetoughnessandisnoteasytoburn.Itwillproducechlorinewhenburned,whichwillaffecttheenvironment.PVCiseasytoheatandcanbesealedwithasealingmachineandhigh-frequencymachine.Itisthemainrawmaterialforproducingtransparentplasticproducts.PEThardfilmhasgoodtoughness,hightransparency,easytoburn,anddoesnotproduceharmfulgaswhenburned.Itisanenvironmentallyfriendlymaterial,butthepriceishigh,anditissuitableforhigh-endblisterproducts.TheblisterblisterinEuropeanandAmericancountriesgenerallyrequiresPEThardfilm,butItisnoteasytoheatseal,whichbringsgreatdifficultiestopackaging.Inordertosolvethisproblem,peoplecompoundalayerofPVCfilmonthesurfaceofPET,namedPETGrigidsheet,butthepriceishigher.Let'stalktoyouaboutthisissue.Blister:Aplasticprocessingtechnology.Themainprincipleistoheattheflatplastichardsheettosoftenit,thenusevacuumtoabsorbitonthesurfaceofthemoldandcoolittoform.Itiswidelyusedinplasticpackaging,lighting,advertising,decorationandotherindustries.　　Thesheetusedforblisterpackagingiscalledrigidfilmorfilm.CommonlyusedarePET(polyethyleneterephthalate)rigidfilm,PVC(polyvinylchloride)rigidfilm,andPS(polystyrene)rigidfilm.　　PShardfilmhaslowdensity,poortoughness,andeasytoburn.Itwillproducestyrenegas(aharmfulgas)duringcombustion,soitisgenerallyusedtoproducevariousindustrialblistertrays.　　PVCrigidsheethasmoderatetoughness,isnoteasytoburn,andwillproducechlorinewhenburned,whichwillaffecttheenvironmenttoacertainextent.PVCiseasytoheatandcanbesealedwithasealingmachineandahigh-frequencymachine.Itisthemainrawmaterialforproducingtransparentplasticproducts.PEThardfilmhasgoodtoughness,hightransparency,easytoburn,anddoesnotproduceharmfulgaswhenburned.Itisanenvironmentallyfriendlymaterial,butthepriceishigh,anditissuitableforhigh-endblisterproducts.TheblisterblisterinEuropeanandAmericancountriesgenerallyrequiresPEThardfilm,butItisnoteasytoheatseal,whichbringsgreatdifficultiestopackaging.Inordertosolvethisproblem,peoplecompoundalayerofPVCfilmonthesurfaceofPET,namedPETGrigidsheet,butthepriceishigher.

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Characteristics and applications of commonly used blister materials

1.PVCsheethashightoughnessandisnoteasytoburn.Itwillproducechlorinewhenburned,whichwillaffecttheenvironmenttoacertainextent.PVCiseasytoheatandcanbesealedwithasealingmachineandhigh-frequencyedgesealing.Itisthemainrawmaterialforproducingtransparentplasticproducts.PVCsheetisawidelyusedandpopularmaterial.PVCfilmcanbedividedintoenvironmentalprotectionandnon-environmentalprotection.Itcanbemadeintovariousblisterpackagingproductssuchastransparent,colorful,anti-static,gold-plated,flocking,etc.Themainfeaturesarehightransparency,goodsurfacegloss,fewcrystalpoints,smallwaterlines,wideuse,strongimpactresistance,andeasymolding.Theproductsarewidelyusedintoys,food,electronicproducts,medicine,electricalappliances,gifts,cosmetics,stationery,etc.Productpackaging.2.PShardfilmhaslowdensity,poortoughness,easytoburn,andstyrenegas(aharmfulgas)willbeproducedwhenburned,soitisgenerallyusedtoproducevariousindustrialblistertrays.PSsheetisanewtypeofenvironmentallyfriendlypackagingmaterialdevelopedinrecentyears.Withitsexcellentthermoformingperformance,goodenvironmentalperformanceandsanitaryperformance,itiswidelyusedinmedicine,food,toys,andelectronics.3.PEThardfilmhasgoodtoughnessandisanewtypeofmaterialdevelopedinrecentyears.Withitsexcellenttoughness,highstrength,hightransparency,andrecyclability,itiseasytoburnanddoesnotproduceharmfulgaseswhenburned.ItisanenvironmentallyfriendlymaterialandgraduallybannedPVC,butthepriceishigh.Itissuitableforhigh-endblisterproducts.TheblistershellsinEuropeanandAmericancountriesgenerallyrequiretheuseofPETmaterials,buttheirthermalmeltingpointisrelativelyhigh,whichbringsgreatdifficultiestohigh-frequencypackaging.Inordertosolvethisproblem,peopleusePETmaterialsonthesurfaceofPET.LayerPVCfilm,namedPETG,butthepriceishigher.Mainlyusedinelectronics,food,toys,colorboxwindows,collarsupports,shoepackaging,etc.Itsadvantagesareasfollows:1.Ithasexcellenttransparencyandsmoothnessandgooddisplayeffect.2.Excellentsurfacedecorationperformance,canbeprintedwithoutsurfacetreatment,easytopresspatterns,easytometalprocessing(vacuummetalcoating)3.Withgoodmechanicalstrength.4.Goodbarrierperformancetooxygenandwatervapor.5.Goodchemicalresistance,canwithstandtheerosionofavarietyofchemicalsubstances.6.Itisnon-toxicandhasreliablehygienicperformance.Itcanbeusedforpackagingfood,medicineandmedicalequipment,andcanbeY-raysterilizedforthepackageditems.7.Ithasgoodadaptabilitytoenvironmentalprotectionandcanberecycledeconomicallyandconveniently;whenitswasteisincinerated,noharmfulsubstancesharmfultotheenvironmentareproduced.PETsheetisconsideredtobeanidealpackagingmaterialthatmeets(ROSH)environmentalprotectionrequirements.4.PETGsheet,alsocalledGPETsheet,ismadeofanamorphousPETresinmodifiedwithcyclohexanediol.ThebiggestadvantageofPETGsheetisgoodheatsealingperformance,easyoperationduringsealing,goodsealingeffectandeasygluebonding.Atthesametime,itschemicalresistance,opticalproperties,andscratchresistancearealsoverygood.PETGhaspassedtheUSFDA'sfoodcontactstandardsandcanbeusedinthepackagingoffoodandpersonalhealthproducts,medicalandhealthequipmentandfood,aswellaselectronicdevicepackaging.Itsadvantagesareasfollows:1.Goodtransparency,suitableforproductsrequiringhightransparency.2.Excellentimpactstrengthandrigidity.3.Excellentprocessability.Itcanbeprocessedbysawing,die-cutting,drillingandlasercutting.Itcanalsobecoldandhotbending,bonding,weldingandpolishing,printingandpainting;Andcoldbendingdoesnotwhiten,theappearanceisbright.4.Goodthermoformability,canbeformedwithoutpreheating,highprecision,gooddeepformability,nocrackinganduniformthickness.5.Lowflammability,goodfireresistance,non-combustion,lowsmokeemission,noharmfulsubstancesafterburning.5.PPsheetismadeofPPresinthroughtheprocessofbrewing,calenderingandtrimming.Ithaslightweight,brightandcalmsurface,goodheatresistance,highmechanicalstrength,excellentchemicalstabilityandinsulationIthasthecharacteristicsofsexandnon-toxicity,andcanbemadeintodailynecessitiessuchasbeveragecupsandfoodboxesafterthermoforming.6.GAGisathree-layercompositesheet.Itisathree-layercompositesheetproducedbyco-extrusionofthemiddlelayerAPETandtheupperandlowerlayersofPETGrawmaterialsinanappropriateratio.Itisespeciallysuitableforpackagingboxesthatneedtobebondedbyhigh-frequencyheatsealingandglue.Itsadvantagesareasfollows:1.Goodtransparency,transparencycanreachmorethan90%,goodtexture,suitableforproductsthatrequirehightransparency.2.Excellentimpactresistanceandrigidity,thematerialishardanddurable,suitableforapplicationswithhighimpactresistance.3.Excellentprocessability.Itcanbeprocessedbysawing,diecutting,drillingandlasercutting.Itcanalsobecoldbendingandhotbending,bonding,weldingandpolishing,printingandpainting;coldbendingisnotwhitening,andtheappearanceisbright.4.Goodthermoformability,canbemoldedwithoutpreheating,highprecision,shrinkagerateisabout0.5%;deepformability,nocrackinganduniformthickness.5.Environmentalprotection,canberecycledandusedwithoutpollutingtheenvironment.6.Excellentfoodhygiene.ThematerialisPETG,whichcanmeetallmajorfoodregulations,suchasF

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About the blister industry

Thevacuumblistermoldingprocesswasknownasearlyasthebeginningofthe20thcentury,butitsapplicationinindustrialproductionwasonlyafterthe1940s,anditonlydevelopedinthe1960s.Inthepast20years,ithasdevelopedintooneofthemostimportantmethodsforprocessingpackagingmaterials.Thereasonfortherapiddevelopmentofthistechnologyisthecontinuousinnovationofvacuumformingtechnologyandequipment,aswellasthedevelopmentofnewsheetswithformingproperties;itisalsodeterminedbythedevelopmentofthepackagingindustryandthecharacteristicsofvacuumformingpackaging.Vacuumformingisoneofthemostcommonlyusedformingmethodsforplasticpackagingcontainers.Itisasecondarymoldingtechnologythattakesthermoplasticsheetsasthemoldingobject.Inforeigncountries,vacuumblistermoldingisanoldmoldingprocess.Duetocontinuousdevelopmentandchanges,ithasbeenhighlyautomatedandmechanized,andithasachievednowasteand100%ofrawandauxiliarymaterialsintoproducts.Themoldingsystemengineeringoffullassemblylineproduction.Vacuumblistermoldinghasdifferencesinthefollowingconditions:·Theremoldingtemperaturerequiredforheatingthemoldingmaterialtoahighlyelasticstate·Themoldingmoldusuallyusedinblistermolding·Theproductiscooledtoacoolingtemperaturethatdoesnotchangeinsize·DimensionalstabilityInmostcases,post-processingofblistermoldingisalsonecessary,suchas:·trimming·welding·bonding·heatsealing·coating·metalspraying·flocking·printingvacuumformingNowithasbecomeagenerallyacceptedtermintheprocessingfield:"vacuumforming".And"pressureforming"(pressureforming)referstosomespecialprocessesusingairpressure."Thermoforming"(thermoforming)isageneraltermforvariousthermoplasticmoldings(includingvacuumandpressure,ormixedmolding).1.Theadvantagesanddisadvantagesofvacuumblistermolding.Judgewhetheranyoneoftheprocessingandproductionprocessesissuccessful,comparewithanotherprocessingmethod,whetherthecostoftheproductsproducedbythismethodisappropriate;orareproducedbythesetwomethodsThecostoftheproductisthesame,butthequalityoftheproductproducedbythismethodisimproved.Inmanyapplications,injectionmoldingorblowmoldingcompeteswithvacuummolding.Butasfaraspackagingtechnologyisconcerned,unlesscardboardisusedaspackagingmaterial,thereisnootherprocessingmethodthatcancompetewithvacuumformingtechnology.Themainadvantageofvacuumblistermoldingisitsengineeringeconomy.Forproductssuchascompositesheet,foamsheetandprintingsheet,themoldshouldbechangedappropriatelytoreplacethevacuumsuctionmoldingmachine.Productswithverythinwallscanbevacuummoldedwithhighmeltviscositysheets,whileinjectionofthesamewallthicknessrequireslowmeltviscositypellets.Forasmallnumberofplasticparts,thefavorablemoldcostisanotheradvantageofvacuumblistermolding.Forlarge-volumeparts,theproductcanachieveverythinwallthicknessandthehighoutputratioofthevacuumblistermoldingmachineisveryadvantageous..Thesmallestpartsthatcanbeproducedbyvacuumblistermoldingarepackagingmaterialsfortabletsorbatteriesforwatches.Itcanalsoproduceverylargeproducts,suchasgardenpoolswithalengthof3to5meters.Thethicknessofthemoldingmaterialcanrangefrom0.05to15mm,andforfoamedmaterials,thethicknesscanreach60mm.Anykindofthermoplasticsormaterialswithsimilarpropertiescanbevacuummolded.Thematerialusedforvacuumblistermoldingisasheetwithathicknessof0.05to15mm,andthesesheetsaresemi-finishedproductsmadeofpelletsorpowder.Therefore,comparedwithinjectionmolding,therawmaterialforvacuumblistermoldingwillincreaseadditionalcosts.Itisnecessarytocutthesheetduringvacuumforming,whichwillproducescraps.Aftercrushingtheseleftoversandmixingthemwiththeoriginalmaterials,theycanbemadeintosheetsagain.Invacuumforming,onlyonesurfaceofthesheetisincontactwiththevacuumformingmold,soonlyonesurfaceisconsistentwiththegeometricdimensionsofthevacuumformingmold,andthecontouroftheothersurfaceoftheproductisobtainedbydrawing.

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Dongguan Dongsu Packaging Materials Co., Ltd., Yanhe Industrial Zone, Liwu Village, Qiaotou Town, Dongguan City, Guangdong Province

Phone：0769-81023021 Fax：0769-81023011 E-mali：dgyiuhing168@163.com