雙重卷邊金屬及塑料容器的密封

雙重卷邊金屬及塑料容器的密封開孔易拉蓋罐

1810年發(fā)明了馬口鐵罐頭儲(chǔ)存易腐食品

頂和底焊接到圓罐上HoleandCapCan

Tincaninventedin1810topreserveperishablefoodTopandbottomsolderedtocylinder易拉蓋罐HoleandCapCan頂開罐焊接邊縫

兩端有皺紋的，現(xiàn)在稱為雙重卷邊1920年開始取代開孔易拉蓋罐OpenTopCan

SolderedsideseamEndscrimpedon--nowcalleddoubleseamingReplacedholeandcapcanby1920現(xiàn)有的雙重卷邊容器熔接罐

無縫兩片罐

全鋁罐

塑料罐或碗易拉罐CurrentDoubleSeamContainers

WeldedsideseamcanSeamlesstwo-piececanAllaluminumcanPlasticcanorbowlEasy-openends現(xiàn)今花樣繁多的雙重卷邊金屬罐VarietyofMetalDoubleSeamed

CansAvailableToday金屬罐生產(chǎn)材料鍍錫鋼板

無錫鋼板

金屬板陽(yáng)極特性對(duì)雙重卷邊罐的特性有影響CanManufacturingPlate

TincoatedbasesteelTin-freesteelPlatecharacteristicsaffectdoubleseamcharacteristics容器結(jié)構(gòu)

邊緣：將罐體邊緣彎曲形成鉤狀ContainerStructure

Flange:Fixedbodyedgethatformsbodyhook容器結(jié)構(gòu)蓋卷曲：形成罐蓋鉤邊ContainerStructureEndCurl:Formscoverhook密封劑在蓋的環(huán)形槽使用密封劑密封劑的類型取決于產(chǎn)品種類和殺菌方法SealingCompound

SealingcompoundappliedtoannulargrooveofcanendCompoundtypedependsonproductandmethodofsterilization雙重卷邊由罐體卷曲和罐蓋鉤邊鏈接而形成

罐體卷曲和罐蓋鉤邊互相緊扣

雙重卷邊通過兩步操作完成TheDoubleSeam

FormedbyjoiningbodyofcanwithendInterlockofbodyflangeandcurlofendGenerallyformedintwooperations接縫卷攏SeamerChuckandRolls頭道卷封罐蓋鉤邊與罐體卷曲扣在一起

頭道卷封出現(xiàn)的差錯(cuò)在后面加工中不會(huì)被消除FirstOperation

EndcurlisinterlockedwithbodyflangeCannotcorrectfaultyfirstoperationduringremainingsteps頭道滾輪接縫的質(zhì)量受以下因素影響：1.疊接的高度2.底座的壓力3.滾輪的排列4.第一步卷攏的緊密度FirstOperationSeamQualityisaffectedby:1.Pingaugeheight2.Baseplatepressure3.Alignmentofrollstochuck4.Firstoperationrolltightness二道卷封滾輪比第一步更加扁平擠壓預(yù)成型的鉤以提高雙重卷邊的緊密度SecondOperation

RollhasflattercontourthanfirstoperationrollPressespreformedhookstogethertodevelopdoubleseamtightness雙重卷邊每個(gè)雙重卷邊由以下部分組成

三層罐蓋兩層罐體適當(dāng)?shù)拿芊鈩╇p重卷邊形成了密閉的封口

TheDoubleSeam

Eachdoubleseamconsistsof

threethicknessesofthecanendtwothicknessesofthecanbodyanappropriatesealingcompounddistributedthroughthefoldedmetalThisformsahermeticseal

塑料碗PlasticBowls雙重卷邊的結(jié)構(gòu)通過特定卷邊結(jié)構(gòu)的評(píng)估對(duì)雙重卷邊結(jié)構(gòu)品質(zhì)進(jìn)行判定封口的說明由罐體和罐蓋的供應(yīng)商提供最終在拆毀卷邊后通過肉眼觀察做出判定DoubleSeamStructure

QualityjudgedbyevaluationofspecificseamstructuresSeamspecificationsfurnishedbycanandendsupplierFinaljudgmentmadebyvisualinspectionoftorndownseam卷邊的測(cè)量埋頭度:卷邊頂端至臨近卷邊內(nèi)壁的肩胛所測(cè)得的間距SeamMeasurementsCountersinkdepth:Seamtoptoendpanel卷邊的測(cè)量卷邊厚度:卷封的罐蓋、罐體鉤合后的鐵皮的最大厚度SeamMeasurementsSeamthickness:Distanceacrossseamlayers卷邊的測(cè)量卷邊的寬度:平行于卷邊身蓋鉤所測(cè)得的二重卷邊的尺寸SeamMeasurementsSeamwidth:Dimensionparalleltoseamlayers卷邊的測(cè)量(續(xù))身鉤:罐身的翻邊

疊接:卷邊內(nèi)部身鉤和蓋鉤間相互鉤合重疊的部分SeamMeasurements(continued)

Bodyandcoverhook:InternalpartsofseamOverlap:Degreeofinterlockbetweenbodyandcoverhooks緊密度以蓋鉤的皺紋程度來判斷RatingindicatesrelativefreedomfromwrinklesTightness

JudgedbydegreeofwrinklingofcoverhookRatingindicatesrelativefreedomfromwrinkles接合區(qū)域雙重卷邊疊接水平焊接的部分焊接罐的最關(guān)鍵點(diǎn)

蓋鉤垂唇的程度JunctureArea

WheredoubleseamcrossessideseamMostcriticalpointinsolderedsideseamcansDegreeofdroopincoverhook接縫的組成

塑料罐與金屬罐的接縫比較SeamComponents

Plasticcancomponentscomparabletothoseofthemetalcan雙重卷邊的危險(xiǎn)性評(píng)價(jià)一個(gè)接縫可能看似完美，但內(nèi)部結(jié)構(gòu)可能有缺點(diǎn)，并且沒有達(dá)到真空密封CriticalEvaluation

oftheDoubleSeamAseammayappearsatisfactory,butmayhaveafaultyinternalstructureandnohermeticseal.卷邊的危險(xiǎn)性評(píng)價(jià)對(duì)偏差進(jìn)行測(cè)量，評(píng)估其嚴(yán)重性CriticalEvaluationofSeamsExperiencedjudgmentneededtoassessseriousnessofout-of-specificationmeasurements.埋頭深度過大導(dǎo)致蓋鉤和疊接率縮小

可能是有底座壓力過大造成的ExcessiveCountersinkDepth

ResultsinshortenedcoverhookandoverlapExcessivebaseplatepressureisonepossiblecause頭道卷邊松弛可能會(huì)造成蓋鉤和疊接率不佳

可能是由頭道滾輪不合適造成的LooseFirstOperationSeam

MaynotformgoodcoverhookandoverlapCausemaybeimpropersettingoffirstoperationseamingroll頭道卷邊過緊導(dǎo)致卷邊底部扁平、銳邊和蓋鉤不佳

頭道滾輪設(shè)置過緊可能是原因之一ExcessivelyTight

FirstOperationSeam

Resultsinflattenedseambottom,sharpseamandpoorcoverhookTightsettingoffirstoperationseamingrollisonepossiblecause身鉤過短可能的原因是:1.升降壓力不足2.Incorrectpinheightsetting頂針高度設(shè)置錯(cuò)誤3.滾輪調(diào)校錯(cuò)誤ShortBodyHooksPossiblecausesare:1.Insufficientlifterpressure2.Incorrectpinheightsetting3.Wrongseamingrolladjustment身鉤過長(zhǎng)可能的原因是:1.升降壓力過大2.Incorrectpinheight頂針高度設(shè)置錯(cuò)誤3.罐身翻邊時(shí)不恰當(dāng)LongBodyHooksPossiblecausesare:1.Excessivelifterpressure2.Incorrectpinheight3.Improperlyformedcanflange二道卷邊松弛金屬板疊接沒有被充分壓緊實(shí)

二道滾輪設(shè)置不當(dāng)二道滾輪破損二道滾輪軋槽太寬LooseSecondOperationSeam

FoldsofmetalmaynotbepressedtogethertightlyenoughimpropersettingofsecondoperationseamingrollWornsecondoperationseamingrollSecondoperationseamingrollgroovetoowide二道卷邊過緊可能導(dǎo)致疊接縮短、銳邊，和/或者內(nèi)容物從接縫中溢出ExcessivelyTight

SecondOperationSeamMaycausereductionofoverlap,sharpseamand/orcompoundtosqueezeoutofseam.蓋鉤短小可能的原因有:1.頭道滾輪松弛2.升降壓力過大3.埋頭深度過大ShortCoverHookPossiblecausesinclude:1.Loosefirstoperationroll2.Excessivelifterpressure3.Excessivecountersinkdepth蓋鉤過長(zhǎng)可能的原因是頭道滾輪設(shè)置過緊LongCoverHookPossiblecauseistootightasettingforfirstoperationseamingroll.疊接不充分可能的原因是:1.罐體邊緣不規(guī)則2.鉤邊不規(guī)則3.壓蓋機(jī)調(diào)校不佳InsufficientOverlapPossiblecausesare:1.Irregularcanbodyflanges2.Irregularendcurl3.Poorclosingmachineadjustment結(jié)構(gòu)缺點(diǎn)卷邊畸形可能導(dǎo)致真空密封失敗在觀察發(fā)現(xiàn)后，必須立即采取糾正措施StructuralDefects

SeamabnormalitiesthatmayresultinlossofhermeticsealCorrectiveactionmustbetakenimmediatelyafterobservation垂唇正常卷邊底部出現(xiàn)有平滑的二重卷邊突出部分焊接罐蓋鉤連接部分出現(xiàn)輕微的垂唇可能的原因有幾個(gè)Droop

SmoothprojectionofdoubleseambelowbottomofnormalseamSlightdrooppresentatcoverhookjunctureofsolderedcansSeveralpossiblecauses牙齒原因是蓋鉤和身鉤疊接不充分或者沒有疊接“V”型突出物VeeorLip

Duetoinsufficientornooverlapofcoverhookwithbodyhook"V"shapeprojection銳邊卷邊頂部?jī)?nèi)測(cè)出現(xiàn)鋒利刀口

很容易用手摸出來SharpSeam

SharpedgeatthetopinsideportionofseamMoreeasilyfeltthanseen快口卷邊頂部?jī)?nèi)測(cè)部位上的銳邊嚴(yán)重到鐵皮破裂的程度

可能的原因有幾個(gè)Cut-Over

SeamwhichissharpenoughtofracturethemetalatthetopinsideportionofseamSeveralpossiblecauses跳封卷邊滾輪在身縫處跳動(dòng),造成卷邊不緊的缺陷

重疊時(shí)，滾輪跳動(dòng)產(chǎn)生的缺陷JumpedSeamorJump-Over

SeamnotrolledtightenoughadjacenttojunctureareaCausedbyjumpingofsealingrollsafterpassingoverlap卷邊隆起通常發(fā)生在三片罐和焊接罐增加端縫的厚度

身鉤變形SeamBumps

Mostoftenon3-pieceorweldedsideseamcansLocalizedincreaseinpacker'sendseamthicknessDistortedbodyhook卷邊隆起(續(xù))可能的原因:1.Excessivelytightfinishedseams接縫過緊2.身鉤過長(zhǎng)3.密封劑過多SeamBumps(continued)Possiblecauses:1.Excessivelytightfinishedseams2.Longbodyhooks3.Excessivesealingcompound滑封卷封時(shí)壓頭在埋頭部位內(nèi)滑轉(zhuǎn)或自轉(zhuǎn)所造成的不完全卷邊一個(gè)可能的原因是壓頭帶油DeadheadorSpinner

IncompleteseamcausedbychuckspinningincountersinkOnepossiblecauseisoilorgreaseonchuck假封蓋鉤和身鉤未完全鉤合的卷邊感觀檢查有時(shí)難以發(fā)現(xiàn)這一缺陷

拆開卷邊才能發(fā)現(xiàn)假封FalseSeam

SeamwhichisentirelyunhookedNotalwaysdetectablebyvisualexaminationSeamteardownwillreveal假封(續(xù))其他常見術(shù)語(yǔ):

大塌邊

鉤邊損毀FalseSeam(continued)Othercommonterms:KnockeddownflangeDamagedendcurl罐體脹裂卷邊正常，但罐體脹裂或扭曲一個(gè)可能的原因是底托壓力太大CanBodyBuckling

BuckledortwistedconditionunderfinishedseamOnepossiblecauseisexcessivebaseplatepressure罐身外斜罐身不成直角導(dǎo)致不平衡罐在生產(chǎn)過程中存在瑕疵CockedBody

CanbodyblankoutofsquarecausingunevennessatlapCanmanufacturingdefect裝配錯(cuò)誤蓋子裝配錯(cuò)誤在壓蓋機(jī)里，罐身和底部校正不佳Misassembly

ReferredtoasmisplacedcoverCanbodyandendimproperlyalignedinclosingmachine卷邊碎裂卷邊外層有裂口

可能有幾個(gè)原因CutSeam

OuterlayerofdoubleseamfracturedSeveralpossiblecauses蘑菇形邊緣過冶成的罐邊緣導(dǎo)致身鉤過長(zhǎng)可能只有通過卷邊橫截面檢查才能發(fā)現(xiàn)MushroomedFlange

OverformedcanflangeresultinginlongbodyhookMayonlyfindbyexaminationofseamcross-section凸出或凹進(jìn)的編碼斷裂產(chǎn)品編碼處的金屬板破裂可能的原因:凸起和凹陷字符排列錯(cuò)誤字型支持裝置調(diào)整不當(dāng)新舊字型混淆凸起和凹陷字型匹配

編碼器壓力過大或設(shè)置不當(dāng)，造成編碼過深采用噴墨打碼設(shè)備可以避免這一問題出現(xiàn)Fractured

Embossed/DebossedCodesResultwhenthemetaloftheendhasbeencutthroughatthecodemarkPossiblybecausedby:MisalignmentofmaleandfemaletypecharactersMisalignmentoftypeholdersIntermixingofnewandoldtypesImpropermatchingofmaleandfemaletypeExcessivecoderpressureorimpropercodersettinggivingtoodeepacodemarkTheuseofaninkjetcodingsystemhaseliminatethisconcern

BrokenChuck壓頭損毀壓頭部分邊緣損毀卷邊松弛造成壓頭損毀的原因很多BrokenChuck

PortionofchucklipmissingLooseseamatthatpointSeveralpossiblecausesofchuckdamage雙重卷邊完整性評(píng)估檢查應(yīng)該由訓(xùn)練有素的技師執(zhí)行

檢查應(yīng)該包括感官和解剖檢查兩部分Evaluationof

DoubleSeamIntegrity

InspectionsshallbeperformedbytrainedclosuretechnicianInspectionsshallincludevisualandteardownexaminations感官檢驗(yàn)封罐機(jī)前端都應(yīng)有感官檢驗(yàn)檢驗(yàn)外部特征是否有粗糙的瑕疵

VisualExaminations

RequiredforeachclosingmachineheadExternalfeaturesshallbeexaminedforgrossdefect感官檢查(續(xù))根據(jù)必要情況，經(jīng)常進(jìn)行感官檢查兩次檢查間隔不要超過30分鐘在罐和底部類型改變時(shí)，應(yīng)該進(jìn)行感官檢查VisualExaminations(continued)

ShallbemadeasoftenasnecessaryShouldbemadeatintervalsnottoexceed30minutesShouldbemadefollowingchangeofcanorendtype解剖檢查工具卷邊測(cè)微器

TeardownExaminationToolsSeammicrometer

解剖檢查工具埋頭度測(cè)量?jī)xTeardownExaminationToolsCountersinkgauge解剖檢查工具起罐器TeardownExaminationToolsCanopener解剖檢查工具鑷鉗TeardownExaminationToolsNippersOptionalTools可選擇的其它工具Seamsaw-cutscross-section卷邊橫截面切割儀OptionalTools

Seamsaw-cutscross-sectionOptionalTools可選擇的其它工具

投影儀-在檢查疊接率是非常有效OptionalTools

Seamprojector-veryeffectivefordeterminingoverlapOptionalTools可選擇的其它工具卷邊觀測(cè)儀OptionalToolsSeamscope-forlookingatseamcross-section解剖頻率每個(gè)卷邊封頭至少檢驗(yàn)一個(gè)罐解剖頻率應(yīng)能準(zhǔn)確了解卷邊的完整性情況

兩次檢查時(shí)間間隔應(yīng)不超過4小時(shí)應(yīng)記錄結(jié)果和糾偏措施TeardownFrequency

ShallbemadeonatleastonecanperseamingheadFrequencyshallensuresealintegrityShouldbemadeatintervalsnottoexceed4hours

Shallrecordresultsandcorrectiveactions何時(shí)進(jìn)行解剖檢驗(yàn)生產(chǎn)開始前在發(fā)生嚴(yán)重故障后立即進(jìn)行封口機(jī)調(diào)?；蚋淖兒髴?yīng)進(jìn)行解剖檢驗(yàn)WhentoPerformTeardowns

BeginningofproductionImmediatelyafterseverejamAfteradjustmentsorchangestoseamingmachine必須的測(cè)量設(shè)備測(cè)微器體系光學(xué)體系RequiredMeasurements

MicrometersystemOpticalsystemMicrometerMeasurementSystem測(cè)微器測(cè)量體系三個(gè)測(cè)量點(diǎn)以120度左右的角度切，不要相互接觸用以檢驗(yàn)蓋鉤、身鉤、寬度、緊密度、厚度和接縫蓋鉤完整率MicrometerMeasurementSystem

Threemeasurementsaremadeatpointsapproximately120degreesapart,excludingjunctureCoverhook,bodyhook,width,tightness,thickness,juncturerating(USDA)required解剖檢驗(yàn)和步驟測(cè)微器方法Teardown

MeasurementsandProceduresMicrometermethod解剖雙重卷邊TearingDowntheDoubleSeam解剖蓋鉤DisengagingtheCoverHook光學(xué)檢驗(yàn)體系至少要有兩個(gè)檢驗(yàn)部位(USDA)用以檢驗(yàn)身鉤、迭接率、緊密度、厚度和接縫蓋鉤完整率OpticalMeasurementSystem

CutsshouldbefromatleasttwodifferentlocationsRequiredtomeasurebodyhook,overlap,tightness,thicknessandjuncturerating(USDA)解剖檢驗(yàn)步驟1.可以先外部檢驗(yàn)(卷邊寬度、厚度和埋頭度)，之后2.內(nèi)部檢驗(yàn)蓋鉤、身鉤、緊密度、接縫蓋鉤完整率和受壓隆起Teardown

MeasurementProcedure1.Applicableexternalmeasurement(seamwidth,thickness,countersink)followedby2.Internalmeasurements(bodyandcoverhooks,tightnessandjunctureratings,pressureridge)強(qiáng)度和接縫蓋鉤完整率應(yīng)該檢測(cè)蓋鉤的緊密度和起皺率接縫蓋鉤完整率顯示了蓋鉤有效疊接的情況TightnessandJunctureRating

CoverhookshouldbeexaminedfortightnessorwrinkleratingJunctureratingindicatespercentageofcoverhookavailableforoverlap受壓隆起在二道滾邊過程中，為了卷邊緊密度而在罐身上形成的壓痕PressureRidgeThepressureridgeisanimpressiononthebodywallastheresultofthepressureappliedbythesecondoperationrollincreatingseamtightness雙重卷邊塑料罐的檢驗(yàn)程序EvaluationProceduresforDoubleSeamedPlasticContainers

緊密度塑料成分在雙重卷邊的壓緊情況檢驗(yàn)方法不同容器供應(yīng)商應(yīng)推薦檢驗(yàn)方法Tightness

CompressionofplasticcomponentsindoubleseamDifferentmethodsforevaluationPackagesupplierwillrecommendmethod檢驗(yàn)結(jié)果的說明如果結(jié)果不