Cause Analysis thiab Tswj ntawm Warpage ntawm Corrugated Cardboard
Peb yog ib lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv xov xwm luam ntawv, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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Hauv cov txheej txheem ntawm corrugated ntawv, cov defects ntawm corrugated cardboard warping feem ntau tshwm sim. Nyob rau hauv ntau zaus, qhov qub zuj zus ntawm cov txheej txheem tom ntej yuav raug cuam tshuam, thiab lub sij hawm ntawm scrapping yuav loj heev ntau, ua rau pov tseg thiab nce cov nqi ntau lawm. Vim li no, nyob rau hauv cov txheej txheem ntawm corrugated ntawv, nws yog ib qho tsim nyog kom tsis txhob tshwm sim ntawm warpage ntawm corrugated cardboard, uas yog ib txoj hauv kev zoo los txo cov kev siv thiab txo nqi. Tsab ntawv no qhia txog qhov laj thawj ntawm kev sib tsoo ntawm lub rooj sib tham ntawm corrugated thiab nws cov kev tswj.
Kev sib tsoo ntawm kev sib tsoo ntawm tsev kawm ntawv
Raws li qhov txawv warping phenomenon ntawm corrugated cardboard, nws yuav roughly muab faib ua tsib hom: longitudinal zoo warping, longitudinal anti-warping, horizontal warping, lateral anti-warping thiab compound warping.
1. Longitudinal warpage: Cov xwm txheej tshwm sim uas cov ntawv tso tawm sab hauv sab nraud rau cov nplooj ntawv corrugated yog hu ua longitudinal warpage. Qhov warpage tshwm sim ntau dua nyob rau hauv cov tsim teeb meem tuaj.
2. Longitudinal anti-warping: Lub phenomenon ntawm cov ntawv sau rau hauv cov kev teeb tsa los ntawm corrugated, cov lus qhia sab nraud ntawm lub ntsej muag yog hu ua longitudinal anti-warping. Qhov warpage tshwm sim tsawg dua nyob rau hauv corrugated board ntau lawm.
3. Kab Rov Tav Tshaj Xo: Cov xwm txheej ua rau muaj kev sib tw ntawm txoj kab thiab corrave nyob hauv daim ntawv yog hu ua rau lub nkoj tom qab. Qhov kev lag luam no feem ntau tshwm sim nyob rau hauv lub rooj sib tham ntawm corrugated ntawm cov ntawv luam ntawv.
4. Lateral tiv thaiv kev ua tsov ua rog: Qhov tshwm sim ua kom sov ntawm daim duab los ntawm corrugation, sab nraud warping ntawm daim phaj ntawv hu ua lateral anti-warping, uas yog ib hom warping phenomenon uas feem ntau ua nyob rau hauv corrugated board tsim txheej txheem.
5. Ua zoo sib xws: Muaj ob lossis ntau hom kev ua haujlwm ntawm lub rooj sibtham, uas yog hu ua compound warping.
Ob peb lub ntsiab lus tseem ceeb
Thiaj li yuav tsom xyuas qhov kev ntsuam xyuas thiab kev kawm txog qhov ua rau thiab cov mechanisms ntawm warpage ntawm corrugated cardboard, ob peb lub ntsiab lus yuav tsum tau qhia meej ua ntej.
1. Kev txhais ntawm txoj kab ntev thiab kev nkag siab ntawm lub rooj sib tham ntawm corrugated: parallel mus rau kev coj ntawm corrugated zeeg rau corrugated board, piv txwv li cov kev taw qhia ntawm lub web ntawm daim ntawv yob, uas yog txhais tau hais tias lub transverse kev taw qhia ntawm corrugated board; qhov kev coj ua rau cov pob txha corrugated yog txhais tias corrugated board Portrait.
2. Cov sab nrauv ntawm ntawv thiab ntawv pov thawj nyias txawv nyias ntawm cov dej ntub: thaum lub sij hawm qhuav txheej txheem (ua ntej ziab), cov sab nrauv ntawm cov ntawv thiab cov ntawv qhia yuav ua kom tsawg li cov ntsiab lus ntawm cov dej noo. Nquag, tus nqi ntawm qhov yoj shrinkage yog siab tshaj qhov nyiaj ntawm qhov kev ywj pheej nyob hauv qhov kev coj mus ntev, thiab qhov nyiaj ntawm qhov kev ntsuas thickness yog ignored ntawm no.
3. Cov yam ntxwv ntawm shrinkage ntawm corrugated cardboard thaum lub sij hawm ziab: Ntawm no, ib qho corrugated uas tsuas yog 3-txheej corrugated cardboard yog muab ua piv txwv. Lub qhov cub ua kom muaj qhov sib tsoo uas yog 3-txheej corrugated yog tsim los ntawm laminating, tsevneeg thiab ziab ib cov nplooj ntawv ob-txheej corrugated thiab daim ntawv ntsej muag ntawm lub tshuab txheej txheem lo. Lub shrinkage ntawm corrugated cardboard thaum lub sij hawm nws ziab kev muaj cov nram qab no cov yam ntxwv:
(1) Thaum cov dej ntim ntawm ib-phab ntsa uas muaj ob-txheej phab ntsa ntau dua li ntawm cov ntawv ya raws ntawm daim ntawv, qhov ntswg ntawm phab ntsa ib txheej ob-txheej yog qhov loj tshaj li hauv shrinkage ntawm daim ntawv, thiab ob -Cov ntaub ntawv yog khov kho ua ke, yog li ntawv nws yuav raug rau qhov kev sib cog lus ntawm thaj tsam ntawm qhov chaw ntawm ib-phab ntsa ntawv ob-txheej. Vim tias qhov ntev ntawm qhov kev sib tw ntawm ob leeg txheej ntawm cov kab nrig ib nrab ntawm cov lus sib luag ntawm cov kab uas muaj ob-txheej kab nrawm yog compensated los ntawm me ntsis deformation ntawm corrugated waveform, warping kev nyuaj siab yog tsis yooj yim generated hauv qhov no, thiab lub lateral shrinkage ntawm ib leeg-wafer ob txheej txheej tsis tau compensated , yog li Warping kev ntxhov siab yog yooj yim generated hauv no.
(2) Thaum twg cov dej ntawm lub ntsej muag ntawm lub ntsej muag loj dua cov dej ntim ntawm ib phab ntsa uas muaj ob-txheej txheej, qhov muag ntawm lub ntsej muag daim ntawv yog qhov loj tshaj li qhov ntsws ntawm ib zaug-wafer ob-txheej ntawv. Ib yam li ntawd, tib daim ntawv-kab xev ob txheej txheej yuav raug rau daim ntawv los ntawm daim ntse ntawm lub ntsej muag. Cov nyhuv ntawm qhov kev cog lus quab yuam ntawm lub plawv mus rau qhov chaw, nyob rau lub sijhawm no, txij li lub sijhawm no, txij li lub zog ntawm ib phab ntsa uas muaj ob-txheej phab ntsa yog me me, kev sib tsoo yuav tshwm sim, thiab thaum lub zog ntawm lub loj loj, tsawg dua yuav tshwm sim.
Ua rau warpage corrugated cardboard
1. Nqus tau cov dej noo sib txawv: Xyaum tau ua pov thawj tias qhov sib txawv ntawm cov khoom ntub ntawm cov khoom siv ntawm corrugated board yog qhov tseem ceeb tshaj rau cov cua daj cua dub.
(1) Yog tias cov dej ntim ntawm ib-phab ntsa uas muaj ob-txheej phaj ntau dua li cov ntsiab lus ntawm cov ntawv nyeem, ces nyob hauv tsevneeg thiab cov ziab kom qhuav, cov ntawv ntim ntawm ib-phab ntsa ob-txheej yuav tsum ntau dua li shrinkage ntawm daim ntawv, thiab ces corrugated cardboard txwv los ntawm shrinkage yam ntxwv, lub tsim cardboard muaj ib tug lateral anti-warping phenomenon. Thaum cov txheej txheem ntawm cov dej ntim ntawm ob-phab ntsa ntawv loj loj, yuav muaj qhov ntsug thiab kab rov tav ntawm lub sijhawm qub txhij txhua, uas yog, qhov teeb meem tshwm sim hauv kev tshwm sim.
(2) Yog tias cov ntsiab lus ntawm lub ntsej muag ntawm lub ntsej muag ntau dua li ntawm cov dej ntim ntawm ib phab ntsa uas muaj ob-txheej txheej, ces qhov ntswg ntawm lub ntsej muag thaum lub sij hawm sib txhuam thiab cov ziab ziab yuav tsum yog ntau tshaj qhov ntsws ntawm cov leeg- wafer ob-txheej ntawv, kuj yog vim los ntawm corrugated cardboard. Txwv tsis pub los ntawm cov yam ntxwv ntawm qhov sib txeeb, qhov kev sib haum xeeb ntawm qhov ntev tau tshwm sim nyob rau hauv cov duab los ua.
2. Ua rau cov kua nplaum uas siv tau: Thaum tsim cov khoom ua kom sov, ib qho-phab ntsa ob txheej yog xa los ntawm lub tshuab ib zaug xwb yuav tsum yog sib npaug ntawm lub tsho ntev ntawm lub tsho tiv no, thiab tom qab ntawd ua ke nrog ntsej muag ntawv. Nyob rau lub sij hawm no, yog tias cov kua nplaum uas siv ntau dhau lawm, cov dej noo hauv qhov muab tshuaj yuav ua sai sai absorbed thiab swelled los ntawm lub taub ntawm ib txheej txheej ob-txheej thiab daim ntawv ntsej muag, yog li ntawd cov dej noo noo ntawm sab ntawm daim ntawv yuav ntau dua li uas nyob sab ntawm daim ntawv. Cov txheej txheem dej noo (piv txwv tias cov dej hauv cov dej ua ntej yuav tsum zoo ib yam), tom qab ntawd lub shrinkage nyob sab ntawm daim ntawv yuav ntau dua qhov ntsws ntawm sab ntawv ntawm cov ntawv kom ziab, yog li cov corrugated cardboard tom qab molding yuav tshwm laterally . Lub phenomenon ntawm warpage, uas yog tshwj xeeb yog nws tshwm sim rau hauv corrugated cardboard nrog offset luam ntawv.
3. Muaj feem xyuam ntawm kev ceev: Muab cov duab los kho kom zoo tom qab ua qhov sib xyaw thiab ua kom zoo dua yuav tsum tau los ntawm lub qhov ziab kom zom ua ke, muab cov khoom los tso ua ke, thiab qhuav. Nyob rau hauv qhov tseeb, qhov kub nruab deg nyob rau hauv feem kev qhia ntawm lub qhov ziab qhov tsis yog yam tsis yog thiab yog nyob rau hauv ib lub xeev ntawm tsawg zuj zus.
Yog li, nws tseem muaj qhov kev kub ntxhov hauv qhov ziab ntawm qhov kev sib tshuam ntawm qhov kev sib tw ntawm corrugated board thaum lub caij ziab khaub ncaws. Yog hais tias qhov ceev ceev qeeb heev thiab qhov ziab ntawm qhov kub kom qhuav tsis haum raws li, cov ntsiab lus ntawm cov khoom cua ntawm corrugated board yuav ua rau sab ntawv yuav qis dua li ntawm daim ntawv sab, thiab cov ntaub ntawv ntev ntawm cov duab ntawv yuav tshwm sim. . Thaum mob hnyav, nws yuav ua rau tus thawj coj los ua brittle, qhib thiab khawb.
Muaj ntau ntau yam rau txheej txheem ntawm corrugated cardboard. Ntxiv rau qhov saum toj no, qhov txawv ntawm cov dej hauv cov dej tsis haum, qhov tsis sib haum ntawm daim ntawv thaum lub sij hawm ntau lawm, thiab qhov ntev ntawm ib txheej txheej ob-txheej ntawm daim flyover yuav tseem ua rau corrugated cardboard mus warped. zaj nkauj Tab sis vim li cas los xij, qhov tseem ceeb tshaj plaws yog tias cov txheej txheem ya raws nruab nrab ntawm cov khoom sib txuam uas ua rau pawg neeg corrugated yog txawv. Yog li ntawd, kev tswj ntawm cov dej noo noo ntawm txhua yam khoom siv ntawm corrugated paperboard yog tus yuam sij rau tswj warpage.
Corrugated board warping tswj
Cov kev tshawb fawb tau pom tias thaum twg cov txheej txheem ntawm cov ntawv sau tau corrugated nkag mus rau lub qhov tso ziab, cov txheej txheem noo noo ntawm lawv ntau dua 2.5% mus rau 3%, nws tsis yooj yim kom tsis txhob muaj lub thawv rau ntawm daim duab. Qhov no txhais tau hais tias qhov sib txawv ntawm 3% cov ntsiab lus ntawm cov dej noo yog qhov tseem ceeb ntawm qhov uas ua cov duab los qhia ua hluav taws xob. Yog li ntawd, kev tsim kho, yuav tsum tu kom tswj tau cov dej noo ntawm txhua txheej ntawv thiab ib phab-phab ntsa ob-txheej, thiab tswj qhov sib txawv ntawm cov dej noo noo ntawm lawv li 3%.
1. To taub cov ntsiab lus ntawm lub hauv paus ntaub ntawv: Thaum siv cov ntawv khawm, cov neeg tsav tsheb ntawm cov kab tsim tshuaj tsim kev lag luam yuav tsum paub cov ntsiab lus ntawm cov dej ntub ua ntej, kom siv cov ntawv yob nrog cov dej hauv cov dej zoo li ze li sai tau, uas yuav pab tau kom tsis txhob muaj qhov ua rau. Tshawb nrhiav lub sij hawm hloov tau ntev dhau los ua kom muaj ntau yam pov tseg.
2. Ua kom tiav kev siv ntawm lub plhaw kheej: Lub tshuab ua ntej yuav tsum tau muab tso rau hauv cov kab tsim tshuaj. Thaum cov dej noo sib txawv ntawm daim ntawv loj loj, nws yuav tsum raug kho los ntawm tus kheej lub tog raj kheej kom cov txheej yuav nkag mus rau qhov ziab qhov quav. Qhov sib txawv ntawm cov ntsiab lus ntawm cov ntawv thawm ntawv thiab ntawv yog tsawg dua 3%.
3. Ua kom tiav cov kua nplaum: Ua kom muaj cov khoom zoo tuaj corrugated board, nws yog ib qho tseem ceeb ntawm tus yuam sij kom txhim kho cov kua nplaum uas siv. Yog tias cov kua nplaum loj heev, daim ntawv npog yog mos, lub zog yog pluag, thiab nws yuav warp. Yog hais tias tus kua nplaum yog tsawg heev, qhov adhesion tsis muaj zog, thiab nws yog yooj yim rau degumming thiab foaming.
Feem ntau, thaum lub tsheb ceev ceev dua, cov kua qaub ntim yuav tsum tau muab txo kom tsawg; Thaum lub tsheb ceev qeeb, cov kua nplaum yuav tsum tau ua kom zoo ntxiv. Thaum siv cov ntawv uas muaj dej tsis haum, cov kua nplaum yuav tsum tau nce kom haum, thiab lwm txoj kev. Yog li ntawd, nyob rau hauv cov txheej txheem ntau lawm, cov kua nplaum uas ua ntawv thov rau cov kua nplaum yuav tsum tau kho raws li qhov hloov ntawm cov khoom noj. Lub hauv paus ntsiab lus ntawm kev hloov yog: nyob hauv qhov tsim nyog ntawm txoj kev muaj peev xwm tsim nyog, cov kua nplaum yuav tsum tsawg dua.
4. Kev sib kho yog: Vim tias muaj cov thawv ntawv uas muaj corrugated muaj ntau yam rau warpage, nws yog qhov nyuaj rau kev tswj tag nrho ntawm kev sib tsoo los ntawm kev kho cov txheej txheem. Yog li ntawd, nws yuav tsum tau hais tias txoj kev teeb tsa yuav tsum yog tsim los ntawm corrugated cardboard cia li ua. 10 daim ntawm ib pawg, khev rau sab pem hauv ntej thiab nraub qaum, thiab tom qab ntawd mam li sib zog nrog cov khoom hnyav kom txog thaum kub thiab av noo ntawm corrugated board thiab hauv tsev kub thiab cua txias tib yam. Qhov no tuaj yeem zam qhov teeb meem ntawm corrugated cardboard.
Txawm hais tias qhov ua rau ntawm corrugated cardboard yog complicated thiab muaj ntau influencing yam, tsuav nws npaum li cas tiag thiab ua tib zoo manipulated, warpage corrugated cardboard yuav tswj tau.