Yuav ua li cas tswj qhov kub thiab av noo nyob rau hauv lub rhiav luam ntawv

Hauv kev khaws cov ntawv, cov av noo yuav tsum tau tswj kom tsim nyog.Cov ntawv lossis cov ntawv siv rau kev ntim khoom thiab luam ntawv feem ntau yuav cuam tshuam rau nws qhov kev ua tau zoo vim yog kev cia khoom tsis raug.Daim ntawv yog cov khoom siv hydrophilic heev.Kev hloov cov dej ntawm cov ntawv yuav ua rau daim ntawv deformed thiab nkig, ua rau misregister ntawm cov khoom luam tawm, thiab tawg ntawm cov khoom ntawv hauv cov txheej txheem ntawm kev tsim thiab ua.Cov kev hloov ntawm ib puag ncig kub thiab av noo yog cov ntsiab lus tseem ceeb uas cuam tshuam rau cov ntsiab lus dej ntawm daim ntawv.Daim ntawv tsis tsuas yog absorbs noo noo thaum sib cuag nrog ntawv, tab sis kuj muaj peev xwm nqus dej noo los ntawm huab cua ntub thiab ntws dej rau hauv huab cua qhuav.Tom qab nqus dej, daim ntawv nthuav dav, qhov loj me thiab thaj chaw hauv txhua qhov kev qhia yuav nce, thiab cov neeg kho tshuab lub zog yuav txo qis.Thaum daim ntawv shrinks tom qab lub cev qhuav dej, qhov linear loj thiab cheeb tsam nyob rau hauv tag nrho cov lus qhia yuav raug txo, thiab nws yuav nruj thiab nkig.Yog li ntawd, txhawm rau tswj cov kev hloov ntawm cov ntawv, peb yuav tsum tswj cov dej ntawm cov ntawv thiab qhov kub thiab av noo ntawm daim ntawv ib puag ncig.Nyob rau hauv tag nrho cov txheej txheem luam ntawv ntau lawm, daim ntawv raug coj tawm ntawm lub tsev rau khoom, txiav, ua tiav thiab molded tom qab luam ntawv, thiab xa tawm ntawm ib lub rhiav mus rau lwm qhov.Nyob rau lub sijhawm no, nws yog ib qho tsim nyog yuav tsum xav txog qhov kev hloov pauv ntawm qhov kub thiab av noo vim qhov hloov pauv ntawm qhov chaw, yog li ua rau kev hloov pauv ntawm cov ntaub ntawv.  (1) Lub tsev khaws khoom yuav tsum tau ua tib zoo saib xyuas cov ntaub ntawv khaws cia thiab tswj qhov kub thiab av noo ntawm lub tsev khaws khoom ib puag ncig.Yog tias daim ntawv nyob rau hauv cov av noo siab, nws yuav nqus cov dej ib puag ncig thiab curl thiab deform, thiab ruffles yuav tshwm;Yog tias daim ntawv khaws cia rau hauv qhov chaw qhuav heev, nws yuav ua rau poob dej hauv daim ntawv, uas yuav ua rau daim ntawv nkig, tsis muaj zog thiab nruj.Yog li ntawd, daim ntawv yuav tsum tau muab cia rau hauv ib qho chaw ze rau qhov chaw siv.  (2) Vim tias qhov sib txawv ntawm qhov kub thiab av noo nyob rau hauv lub rhiav luam ntawv vim qhov kev hloov ntawm ib puag ncig ib puag ncig, daim ntawv yuav tsum conditioned ua ntej muab tso rau hauv printing, tshwj xeeb tshaj yog ib daim ntawv.Thaum unpacking ib daim ntawv ntawm tes, nws cov dej cov ntsiab lus yuav tsis zoo ib yam li qhov kub thiab av noo ntawm lub tshuab luam ntawv rhiav.Kev tswj cov av noo yuav tsum tau ua kom cov dej ntsiab lus ntawm cov ntawv tsis sib xws thiab ua raws li qhov kub thiab av noo ntawm lub tshuab luam ntawv rhiav.Feem ntau muaj peb txoj hauv kev los tswj cov av noo ntawm daim ntawv offset:  (a) Tso rau hauv lub rhiav luam ntawv lossis chav ziab kom qhuav nrog qhov kub thiab av noo zoo sib xws rau lub tshuab luam ntawv los kho cov av noo.  (b) Kev tswj cov av noo yog ua nyob rau hauv cov ntawv ziab khaub ncaws uas yog 6% -8% siab tshaj qhov txheeb ze av ntawm lub rhiav luam ntawv.  (c) Muab cov ntawv tso rau hauv qhov chaw ntub dej kom ntub dej, thiab tom qab ntawd mus rau lub tshuab luam ntawv lossis chav ziab khaub ncaws uas zoo sib xws ntawm qhov kub thiab av noo kom sib npaug ntawm cov dej ntawm daim ntawv, kom cov dej ntawm cov ntawv sib txawv.Muab piv rau peb txoj kev no, ob txoj kev tom kawg yog qhov zoo dua, tab sis qee qhov khoom siv thiab qhov chaw xav tau.Vim muaj kev txwv ntawm cov xwm txheej, tam sim no, feem ntau cov tsev luam ntawv hauv Suav teb tau txais thawj txoj kev, uas feem ntau hu ua natural humidity control method.Yog tias daim ntawv khaws cia rau hauv ib puag ncig yam tsis muaj qhov kub thiab txias tswj, nws yuav tsawg dua prepress.24 teev tom qab ntawd, daim ntawv yuav tsum raug xa mus rau lub tshuab luam ntawv rau kev tswj cov av noo, kom cov dej noo nyob hauv daim ntawv tuaj yeem hloov mus rau qhov kub thiab av noo ntawm lub rhiav luam ntawv.Nyob rau hauv txoj kev no, qhov tseeb ntawm overprinter tuaj yeem lav thiab qhov zoo ntawm cov khoom luam tawm tuaj yeem txhim kho.Tsis tas li ntawd, kev tswj cov av noo ntawm cov ntawv dov thiab cov ntawv ntawv sib txawv.Yob ntawv ntim (xws li nyuj daim ntawv ntim) tuaj yeem tiv thaiv cov ntsiab lus ntawm cov ntawv yob los ntawm cov av noo nyob ib puag ncig, thiab cov ntim sab nrauv tuaj yeem qhib ua ntej lub computer.  (3) Kev tswj kub thiab av noo nyob rau hauv lub rhiav luam ntawv yog kev tswj ntawm tag nrho cov txheej txheem luam ntawv.Qee lub tsev luam ntawv tsuas yog them nyiaj rau kev tswj qhov kub thiab av noo hauv lub rhiav, tab sis tsis saib xyuas qhov ntsuas kub thiab av noo hauv kev ua haujlwm tom qab xovxwm.Lub tshuab luam ntawv rhiav yog nruab nrog cov cua txias sib xws, humidifiers thiab lwm yam khoom siv, uas tuaj yeem ua kom muaj kev ruaj ntseg ntawm qhov chaw ua haujlwm luam ntawv.Kev cob qhia tom qab ua tiav yuav tsum tau txais tib txoj hauv kev los xyuas kom meej qhov chaw ua haujlwm ruaj khov, thiaj li ua rau cov khoom lag luam ua "bon voyage".Tsis tas li ntawd, thaum cov ntaub ntawv luam tawm nkag mus rau qhov qhuav thiab txias tom qab kev ua haujlwm rhiav los ntawm lub tshuab luam ntawv rhiav nrog kub thiab av noo tswj, thiab cov ntawv, cardboard thiab paperboard luam nyob rau hauv pem hauv ntej yog ua tiav nyob rau hauv ib lub thawv ntawv hom, yuav muaj teeb meem xws li. raws li daim ntawv ntug tawg thiab nthuav tawm dawb, uas ua rau cov khib nyiab loj hauv kev tsim khoom.Thaum ua cov phiaj xwm rau ib tus neeg yuav khoom, kev tswj hwm lub tsev khaws khoom thiab kev tswj hwm ib puag ncig, lub tshuab luam ntawv yuav tsum ua tib zoo xav txog cov kev sib txuas me me ntawm tag nrho cov khoom tsim thiab cov khoom zoo, muaj qhov xwm txheej tag nrho, muab tso rau hauv qhov chaw tswj, tsim kom muaj ib puag ncig zoo. thiab txhim kho kev tsim khoom zoo.Kev cuam tshuam ntawm ib puag ncig kub thiab av noo ntawm offset printing Raws li cov kev cai ntawm cov qauv kev cai, ib puag ncig ntawm offset luam ntawv rhiav yuav tsum yog qhov kub thiab txias, uas tsis tsuas yog pab tiv thaiv cov ntawv deformation, txhim kho lub overprinter raug ntawm cov khoom, tab sis kuj ua kom lub printability ntawm tus number case.Txawm li cas los xij, qhov tseeb, vim muaj qhov sib txawv ntawm cov huab cua sib txawv hauv cheeb tsam sib txawv thiab cov peev txheej sib txawv ntawm cov lag luam nyob rau hauv ib puag ncig ntawm offset printing rhiav, nws yog ib qho nyuaj rau feem ntau manufacturers los xyuas kom meej qhov kub thiab av noo ntawm ib puag ncig ntawm offset printing rhiav, uas coj ib co tswv yim nyuaj thiab kev ua tsis tau tejyam rau offset printing ntau lawm.Kev cuam tshuam ntawm qhov kub thiab txias ntawm daim ntawv Cov dej cov ntsiab lus ntawm cov ntawv hloov nrog kev hloov ntawm qhov kub thiab txias, thiab qhov nqus dej thiab dej tsis muaj peev xwm ntawm daim ntawv muaj feem xyuam rau nws cov khoom, qauv, cov ntaub ntawv raw thiab lwm yam.Feem ntau hais lus, qhov siab dua ntawm daim ntawv, qhov ntev ntawm cov fiber ntau thiab qhov siab dua qhov loj me, qhov qis cov ntsiab lus dej, txwv tsis pub, qhov sib txawv yog qhov tseeb.Cov dej ntsiab lus ntawm cov ntawv ua los ntawm cov ntawv zeb yog feem ntau 5% ~ 7%.Nyob rau hauv cov txheej txheem ntawm kev thauj mus los ntawm ntawv, cia thiab luam ntawv, cov ntsiab lus ntawm cov dej yuav nce los yog txo nrog ntau qhov chaw.Qhov kev hloov pauv ntawm cov ntsiab lus dej no feem ntau ua rau muaj kev phom sij rau offset luam ntawv.Kev nqus dej ntawm daim ntawv: Vim tias qhov kub thiab av noo ntawm daim ntawv nws tus kheej qis dua qhov ntsuas kub thiab av noo, thiaj li ua tiav qhov sib npaug nrog ib puag ncig, daim ntawv yuav tsum nqus dej los ntawm huab cua, ua rau qhov ntom ntom ntawm daim ntawv yuav txo. , qhov sib txawv fiber ntau kom nce, thiab deformation ntawm daim ntawv kom "ruffled" thiab plaub sab kom hloov pauv thiab warp.Cov teeb meem coj los ntawm daim ntawv deformed no rau offset printing yog: rau lub tshuab nrog hem pem hauv ntej gauge, nws yog ib qho nyuaj rau nkag mus rau pem hauv ntej gauge vim hais tias ntawm yoj fluctuation ntawm daim ntawv gripper.Yuav kom ua tiav lub hom phiaj, nws yog ib qho tsim nyog yuav tsum tau ua kom lub siab ntawm cov ntawv ntawv, ua rau cov ntawv rub tawm tsis txaus thiab tsis raug overprinting ntawm sab ntsuas.Txawm tias daim ntawv yuav dhau mus rau pem hauv ntej ntsuas thiab ncaj qha nkag mus rau hauv chav luam ntawv, ua rau cov ntawv luam ntawv, daim pam thiab lwm yam tsis ua haujlwm.Rau qhov nce-swinging pem hauv ntej gauge, thaum lub tsa ib feem ntawm daim ntawv nkag mus rau hauv pem hauv ntej gauge, nws collides nrog tus nplaig ntawm cov ntaub ntawv nyob rau hauv pem hauv ntej gauge thiab lub ncoo nias daim, uas ua rau cov ntawv poob tawm ntawm qhov chaw thiab cuam tshuam rau lub overprinter raug. .Nyob rau tib lub sijhawm, cov ntawv rub tawm me ntsis tsis sib xws, uas tseem ua rau muaj kev nyuaj rau Feida qhov kev sib cais ntawm daim ntawv.Qhov kev hloov ntawm daim ntawv no tuaj yeem daws tau los ntawm cov ntawv ziab ib txwm rau cov ntawv offset, tab sis rau cov ntawv coated dawb ntawm 250g / m2 lossis ntau dua, daim ntawv ziab yog qhov nyuaj heev.Peb cov kev daws teeb meem yog: sim siv cov ntawv tsim nyob rau hauv tib cheeb tsam kev nyab xeeb raws li peb lub Hoobkas, muab cov ntawv txiav rau hauv lub tshuab luam ntawv offset ob peb hnub ua ntej, cia nws muaj cov txheej txheem ntawm kev hloov mus rau qhov chaw ua haujlwm, nruj me ntsis tswj cov dej noo. ntawm qhov layout thaum lub sij hawm luam ntawv, thiab zoo zoo ntim cov khoom semi-tiav lawm.Dej poob ntawm daim ntawv: Dej poob ntawm daim ntawv yuav ua rau shrinkage thiab tsim "nruj ntug", uas yog, nruab nrab yog concave (los yog convex) thiab plaub sab yog tilted (los yog ntog).Thaum daim ntawv no tau luam tawm, nws nyuaj rau cais cov ntawv.Thib ob, thaum nws nkag mus rau lub tog raj kheej lub tswv yim, qhov kev ntxhov siab tsis sib xws, thiab nws yooj yim rau wrinkle, uas ua rau cov khoom seem.Ntxiv nrog rau cov txheej txheem saum toj no, peb kuj kaw lub qhov rooj thiab qhov rais thiab nruab cov ntaub thaiv kom ntseeg tau tias qhov kub thiab av noo hauv chav ua haujlwm tsis qis li qhov ua tau.Thaum thauj cov ntawv, rub thiab khob cov ntawv ntawv tawm.Vim tias qhov kub thiab txias tsis dhau, qhov sib xyaw ua ke ntawm tus number case nce, kev ua haujlwm ntawm cov roj molecules txo qis thiab cov dispersion quab yuam txo qis, uas ua rau tus number case tsis yooj yim tawg los ntawm cov hlau kos duab.Thaum luam ntawv, lub zog clamping ntawm lub imprint gripper tsis txaus los kov yeej lub zog ntawm cov nplaum nplaum thiab tev tawm ntawm daim pam rau daim ntawv, yog li qhov tsis ua tiav ntawm daim ntawv lo rau daim pam tshwm sim.Txawm hais tias qee qhov kev ntsuas xws li txo qis luam ntawv siab, hloov daim pam thiab txo cov luam ntawv ceev, qhov tsis ua haujlwm yuav raug tshem tawm, thiab kev tsim khoom yuav tsum tau nres.Hnub tom qab, tom qab qhov kub thiab txias hauv lub rooj cob qhia tau nce, tsis muaj teeb meem ntawm daim ntawv nplaum daim pam, thiab cov khoom lag luam rov qab mus rau qhov qub.


Post lub sij hawm: Dec-06-2021