BOPP Flexo Printing Tshuab siv rau dab tsi?

Biaxially oriented polypropylene zaj duab xis yog lub luag haujlwm tseem ceeb hauv kev ntim khoom muag. Nws yog txheej hauv qab nyob rau hauv feem ntau cov khoom noj txom ncauj, khoom qab zib wrappers, luam yeeb wrappers, daim kab xev rov qab thiab cov ntawv luam ntawm ntau daim ntawv lo. Muaj ob yam uas koj yuav tsum paub txog ibBopp Flexo Printing Tshuabe. Ua ntej, koj yuav tsum paub tias nws luam tawm dab tsi. Tom ntej no, koj yuav tsum paub tias yog vim li cas flexo luam ntawv yog cov khoom siv rau lub Hoobkas loj.

Dab tsi ua rau BOPP yog qhov kev thov xav tau substrate

Cov khoom siv nws tus kheej yuav tsum tau piav qhia ua ntej peb tuaj yeem tham txog nws siv. Qhov no yog vim qhov xwm txheej ntawm BOPP ncaj qha piav qhia qhov xav tau rau kev teeb tsa lub tshuab tshwj xeeb.

Polypropylene raug thawb tawm thiab rub nyob rau hauv ob qho tib si kev taw qhia ntawm qhov kub thiab txias. Ob qho kev taw qhia yog tshuab kev taw qhia thiab lateral kev taw qhia. Qhov kev rub no hu ua biaxial orientation. Cov kauj ruam no npaj cov saw hlau polymer. Qhov tshwm sim yog ib zaj duab xis uas muaj zog ntau dua li PP unoriented. Nws muaj qhov pom tseeb zoo heev thiab tsis tshua muaj dej vapor hloov pauv tus nqi. ASTM D882-18 (2022) yog tus qauv ntsuas rau lub zog ntawm cov ntawv nyias nyias. Ib txoj hauv kev los ntsuas lub zog ntawm cov txiaj ntsig bidirectional tau nthuav tawm. Rau BOPP, cov txiaj ntsig no feem ntau ncav cuag 2,800 txog 3,500 MPa hauv kev taw qhia tshuab thiab 3,500 txog 4,500 MPa kab rov tav. Cov no ntau dua li cov yeeb yaj kiab polyethylene ntawm tib lub thickness.

Qhov siab nruj ntawm qhov ntev no ua rau muaj txiaj ntsig zoo rau kev luam ntawv. BOPP tsis ncab ntau npaum li cas nyob rau hauv lub zog ntawm lub network. Qhov kev ncab no tuaj yeem ua rau kev sau npe tsis raug ntawm cov ntaub ntawv mos xws li qis-polyethylene ntom ntom. Tab sis tib lub biaxial orientation tsim ib qho tseem ceeb kev txwv. BOPP lub qhov rais ua haujlwm kub yog me me. Yog tias daim nyias nyias nyob saum 120-130℃ntev dhau lawm, qhov kev txiav txim siab molecular pib so. Qhov no ua rau muaj ob txoj kev contractions mus tas li. Qhov no ua rau muaj kev txwv nruj rau qhov ntsuas kub ntawm lub tshuab ziab khaub ncaws hauv txheej txheem luam ntawv.

Qhov thib ob BOPP cov cuab yeej ntawm kev tswj cov txheej txheem luam ntawv tsim yog lub zog qis. Rau cov yeeb yaj kiab tsis kho, nws feem ntau yog 29 txog 31 mN / m. Ink kom ua raws li cov khoom siv, tus number case qhov nro yuav tsum ncav cuag lossis qis dua cov khoom siv lub zog saum npoo. Qhov no moistens tus number case thiab kis tau zoo. nto tensions nro Feem ntau hnyav-raws li thiab UV flexo number case qauv 28 txog 35 mN/m. Qhov no txhais tau tias lawv nyob ntawm lossis siab dua BOPP lub ntuj lub zog txwv. Qhov tshwm sim yog tsis kho BOPP thawb tus number case tawm. corona tso tawm, kev kho ntshav ntshav lossis kev kho nplaim hluav taws ua ntej- kev kho mob yog cov qauv yuav tsum tau ua ua ntej luam tawm ntawm cov khoom no.

Daim Ntawv Thov Cheeb Tsam 1: Kev ntim khoom noj yooj yim

Kev siv loj tshaj plaws ntawm Bopp Flexo Printing Tshuab yog rau kev kho kom zoo nkauj thiab cov ntaub ntawv luam tawm ntawm cov ntaub ntawv mos - ntim. Cov kev siv no suav nrog:

Khoom noj txom ncauj sab nrauv qhwv. Oriented BOPP muab qhov thaiv thiab qhov tawv tawv uas ua rau cov hnab ntim khoom noj txom ncauj zoo thaum thauj khoom. Nws kuj tseem muaj qhov siab -gloss tiav, kev txhawb nqa rau tag nrho- cov duab luam tawm xim, cov npe khoom, thiab cov ntawv sau raug cai. Kev luam ntawv yog luam tawm rau sab nraud ntawm ib zaj duab xis nyob rau hauv daim ntawv ntawm kev nyeem ntawv rov qab. Tom qab ntawd nws yog glued mus rau lub thermalseal (feem ntau LDPE los yog CPP). Qhov no ntxiab tus number case ntawm ob txheej ntawm polymer txheej. Qhov kev tsim kho no yog hu ua rov qab luam ntawv laminate.

Confectionery twist qhwv. Nyias BOPP (12 txog 20 μm) yog luam tawm hauv 1-2 xim. Tom qab ntawd nws yog txiav thiab dov rau hauv lub tshuab yob wrapping tshuab. Ntawm qhov tsis tshua muaj tuab, BOPP qhov loj me ruaj khov tuaj yeem tiv thaiv kev tawg thiab wrinkling los ntawm cov ntaub ntawv tsis tshua muaj nyob rau hauv cov kab ceev ceev.

Bakery thiab bagging. BOPP cov yeeb yaj kiab luam tawm tau pom - los ntawm qhov tseeb. Ua li ntawd koj tuaj yeem pom cov khoom. Nws tseem yog dej tsis kam, uas txuas ntxiv lub txee lub neej ntawm cov khoom.

Rau txhua lub hom phiaj ntim khoom noj, lub tshuab luam ntawv yuav tsum ua raws li cov cai ntawm kev sib cuag cov zaub mov. Hauv European Union, Txoj Cai (EU) Tsis muaj. 10/2011 ntawm cov ntaub ntawv yas rau zaub mov tau teeb tsa tshwj xeeb rau kev hloov pauv ntawm cov khoom los ntawm kev ntim khoom mus rau zaub mov. Rau kev thim rov qab- luam BOPP laminates, txheej number case raug cais tawm ntawm cov zaub mov los ntawm laminate thiab intranets. Txawm li cas los xij, raws li txoj cai tam sim no, kev hloov pauv tus cwj mem thiab kev ua haujlwm tsis zoo ua raws li kev sim hauv cov txheej txheem coiling tseem tsim nyog.

Daim Ntawv Thov Cheeb Tsam 2: Haus luam yeeb dhau -Cov

Cov ntim luam yeeb thiab lub thawv ntim khoom yog ib qho teeb meem nyuaj hauv BOPP flexo. Qhov no yog vim nws siv cov zaj duab xis nyias nyias (15-20 microns) xav tau kev pom tseeb heev thiab lub tshuab ntim qis qis ntawm 300-600 pob ntawv ib feeb.

Cov ntawv ntim luam yeeb feem ntau yog luam tawm ntawm keeb kwm yav dhau los monochrome, nrog ci ntsa iab kub stamp seem thiab zais kua muag strips. Lub Bopp Flexo Printing Tshuab teeb tau teeb tsa kom qhov tseeb ntawm cov luam yeeb ntau dua li lwm yam. Qhov ntawd yog vim tias txawm tias qhov tsis sib haum xeeb ntawm cov qauv luam tawm thiab cov kauj ruam ci ntsa iab tom ntej yog tsawg dua ib millimeter, nws tuaj yeem ua rau pom qhov tsis sib xws. Qhov kev tsis sib haum no tuaj yeem cuam tshuam tag nrho cov khoom tsim tawm.

Daim Ntawv Thov Cheeb Tsam 3: Siab -Sensitive Label Substrates

Clear BOPP yog dav siv los ua cov txheej saum toj kawg nkaus ntawm cov ntawv nplaum rau ntawm lub raj mis, cov kaus poom thiab cov thawv tawv. Qhov no muaj tseeb tshwj xeeb tshaj yog rau cov dej haus, kev saib xyuas tus kheej thiab cov khoom noj khoom haus uas yuav tsum tau "tawm- daim ntawv lo." Cov yeeb yaj kiab qhov tseeb ua rau daim ntawv lo zoo li nws tau luam tawm ntawm lub thawv.

Nyob rau hauv rooj plaub no, luam ntawv yuav siv qhov chaw nyob rau sab saum toj ntawm BOPP ua ntej txiav thiab khi cov nplaum txheej. Flexible BOPP luam ntawv nrog daim ntawv tuab (feem ntau 50-80 microns) yuav tsum ua tiav cov xim sib txawv hauv cov khoom loj thiab cov ntsiab lus me me. Lub nraub qaum ntawm daim ntawv luam tawm yuav tsum tsis txhob lo lo ntxhuav. Qhov no txhais tau hais tias qhov tsis muaj tus cwj mem los ntshav los yog txheej txheej txav kom txo tau lub zog ntawm cov nplaum nplaum.

ISO 2846-1:2017 gives solid-color density targets for printing quality marks for such labeling work. Rau cov ntawv sau zoo, qhov ceev ntawm cyan thiab magenta number case yuav tsum nyob nruab nrab ntawm 1.50 thiab 1.70 hauv cov qauv teeb. Tso cai hloov pauv yog ntxiv lossis rho tawm 0.05.

Daim Ntawv Thov Cheeb Tsam 4: Adhesive Tape Backing

BOPP daim kab xev nplaum yog siv rau kev ntim khoom, chaw ua haujlwm, chaw ua haujlwm hauv chaw ua haujlwm pob tshab daim kab xev. Daim kab xev yuav tsum muaj cov cim npe lossis cov cim ceeb toom xws li "Fragile," "Side" lossis "Tsis Crushed" yuav tsum tau muab luam tawm rau sab nraum qab ntawm daim kab xev ua ntej nws raug txiav thiab qhov txhab rau hauv cov tub ntxhais. Hom kev siv no tso rau pem hauv ntej qhov kev thov tshwj xeeb rau cov txheej txheem luam ntawv. Ink yuav tsum tau txuas nrog cov khoom siv thiab tom qab ntawd coated nrog acrylic lossis roj hmab nplaum. Qhov no txhais tau tias cov txheej luam ntawv tsis tso tawm saum npoo, txo cov kua nplaum nplaum.

Kev xaiv tus cwj mem tsom mus rau cov qib residual hnyav thiab cov chemistry saum npoo. Cov kuab tshuaj-raws li flexo inks nyob rau hauv cov zaj duab xis qhuav tawm ib tug siab residual hnyav, muaj peev xwm hnov ​​mob nrog cov kua nplaum txheej. Qhov no yuav ua rau cov kua nplaum ua tsis tiav ntawm tus number case rau cov kab ntau lawm. ASTM D3330 muab kev ntsuam xyuas kom pom tias cov kua nplaum nplaum ntawm cov chaw luam tawm ua raws li cov kev cai stripping tib yam li ntawm cov chaw tsis tau luam tawm. Qhov kev kuaj xyuas zoo no tshwj xeeb tshaj yog tsim nyog rau lub hom phiaj no thiab tsis sib xws hauv feem ntau lwm cov flexo- hom khoom luam tawm.

Technical Configuration ntawm BOPP Flexo Tshuab

Lub tshuab luam ntawv Bopp Flexo ua rau hom yeeb yaj kiab no, thiab muaj ntau qhov chaw uas ua rau nws txawv ntawm cov tshuab flexo dav dav:

Web tension control settings. BOPP lub siab tawv txhais tau hais tias qhov kev nruj nruj mus ncaj qha rau hauv kev sau npe drift es tsis yog nqus los ntawm kev ncab. Yog li ntawd, qhov kev tswj nruj nruj yuav tsum tswj xyuas qhov nro ntawm lub vev xaib, txawm tias tsuas muaj qhov zoo lossis qhov tsis zoo ntawm 1 txog 2 N hloov ntawm tag nrho cov yob loj. Hluav taws xob seev cev nrog cov lus tawm tswv yim ntawm tes yog txheej txheem teeb tsa nrog BOPP ua lub hauv paus. Tsis muaj cov tshuab nres ua haujlwm nkaus xwb.

Corona Treatment Station. Ib qho ua tau - nyob rau hauv corona tus neeg kho mob txoj cai ua ntej thawj qhov chaw luam ntawv yog tus qauv BOPP flexo kab. Tus kws kho mob tau nce lub zog saum npoo los ntawm mN / m mus rau 44 mN / m Qhov no yog qhov txaus los xyuas kom meej cov kua dej zoo. Nws ua tsis tau tejyam mus txog qib zog, ua rau muaj teeb meem nrog electrostatic bonding ntawm zaj duab xis thiab coj cov menyuam. Kev siv zog ntawm kev kho mob yuav tsum tau kho kom tsis txhob overtreatment. Overtreatment ua rau ib qho txawv txawv tsis muaj zog ntawm oxidizing uas txo cov adhesion thiab tuaj yeem raug tshem tawm ntawm lub ntsiab membrane.

Kub- tswj kom qhuav. BOPP muaj qhov txo qis ntawm 120-130 degree. Yog li ntawd, lub tshuab ziab khaub ncaws ntawm lub tshuab luam ntawv thiab lub tshuab ziab khaub ncaws zaum kawg yuav tsum raug tswj xyuas qhov kub thiab txias. Qhov tseeb yuav tsum yog ntxiv lossis rho tawm 5 degrees. Kev teeb tsa tshiab dua siv cov cua sov infrared zoned thiab kub nkhaus rau cov tshuab ziab khaub ncaws kub. Qhov no tso cai rau cov kuab tshuaj kom qhuav sai li sai tau thaum khaws cov khoom kom zoo.

Solvent rov qab los yog UV kho. Cov kuab tshuaj-raws li inks feem ntau yog siv los ntawm BOPP. Lawv ua raws li kev ua yeeb yaj kiab zoo. Txawm li cas los xij, lawv xav tau cov kuab tshuaj rov qab los yog kev puas tsuaj, xws li thermal oxidizer lossis cov lim dej lim dej. Qhov no yog ua kom tau raws li VOC emissions cov cai tau teev tseg hauv cov cai xws li EU Industrial Emissions Directive. UV- kho flexo systems tshem tawm cov kuab tshuaj emissions. Tab sis lawv yuav tsum tau xyuas tias tag nrho cov tshuaj photoinitiator ua raws li cov zaub mov raug txwv thaum xav tau.

Kev sib piv nrog Gravure Printing rau BOPP

Rotogravure tau keeb kwm yog thawj txoj kev sib tw rau BOPP saj zawg zog ntim ntawm cov ntim siab. Kev sib piv ntawm cov txheej txheem xaiv qhov tseem ceeb:

Ntau xyoo dhau los, BOPP cov khoom ntim khoom muag tau hloov mus rau cov tshuab flexo vim muaj cov qauv xws li cov khoom me me, tsim qauv sai dua - rau - kev lag luam nrawm, thiab cov tshuab luam ntawv ntsuab. Qhov no yog qhov tseeb tshwj xeeb tshaj yog rau ntau tshaj 10 mus rau 20 khoom ib lub tsev luam ntawv.

Daim Ntawv Pov Thawj Zoo

Ua tiav BOPP flexo luam ntawv yuav tsum muab piv rau cov qauv hauv qab no:

Ink adhesion. ISO 2409 crosscut strip test tau ua tiav ntawm cov qauv luam BOPP. Qhov no yuav xyuas seb tus number case los ntawm qhov chaw ntawm cov khoom. Kuaj tam sim tom qab luam ntawv thiab tos 48 teev.

Abrasion tsis kam. ASTM D5264 ntsuas qhov kev sib txhuam ntau npaum li cas thiaj li pom cov number case tev tawm. Daim duab no qhia tau hais tias yog luam BOPP tuaj yeem muaj sia nyob shipping thiab ua tiav yam tsis tau poob nws qhov tsos.

Dimension stability tom qab luam ntawv. Qhov dav thiab ntev ntawm lub vev xaib raug ntsuas ua ntej thiab tom qab tag nrho cov txheej txheem ziab. Qhov kev ntsuam xyuas kub no tsis ua rau cov yeeb yaj kiab tas mus li kom dhau qhov kev txwv loj rau gluing lossis txiav cov kauj ruam tom ntej.

Xaus

Bopp Flexo Printing Tshuab yog ib lub cuab yeej tsim rau ib txoj haujlwm tshwj xeeb. Nws yog tsim los ntawm BOPP cov ntaub ntawv tshawb fawb. Qhov no suav nrog nws qhov kev siv siab, lub zog qis, qhov kub thiab txias thiab cov kev cai raug zaub mov. Nws siv npog qhov loj tshaj plaws ntawm lub khw muag khoom muag. Cov kev siv no yog ntim khoom noj, ntim khoom qab zib, ntim luam yeeb, daim ntawv lo thiab daim kab xev. Rau txhua qhov kev siv, tus nqi ntawm lub tshuab yog ntau dua li muab tus cwj mem rau hauv zaj duab xis. Nws tus nqi yog nyob rau hauv kev ua li ntawd nyob rau hauv cov kev txwv nruj uas tau teev tseg los ntawm BOPP cov yam ntxwv ntawm lub cev. Qhov no txhais tau hais tias txoj cai nruj, qhov kub thiab txias, txoj cai saum npoo kho lub zog thiab txoj cai number case chemistry. Nyob rau tib lub sijhawm, nws yuav tsum ua raws li cov cai ntawm cov neeg siv khoom loj ntim khoom thiab cov cim kev cai zoo.

Cov ntaub ntawv

ASTM D882-18 (2022).Standard Test Method for Tensile Properties of Thin Plastic Sheeting. ASTM International, 2022. (BOPP MD/TD tensile modulus values, elongation- ntawm -kev coj cwj pwm, kev taw qhia-induced mechanical property data for flexible film substrates)

ISO 2846-1: 2017Xim thiab Transparency ntawm Graphic Arts Inks - Ntu 1: Daim ntawv-Fed thiab Web Offset Lithographic Inks. International Organization for Standardization, 2017. (Tej kho qhov muag ceev specification rau cov txheej txheem inks, ± 0.05 D kam rau ua tus hwm daim ntawv lo thiab saj zawg zog ntim tso zis)

ASTM D5264-98 (2021).Standard Practice for Abrasion Resistance of Printed Materials los ntawm Sutherland Rub Tester. ASTM International, 2021. (Ink film abrasion resistance testing methodology for BOPP-Print flexible packaging substrates)

ASTM D3330 / D3330M-04 (2018).Standard Test Method for Peel Adhesion of Pressure-Sensitive Daim kab xev. ASTM International, 2018. (Peel adhesion verification over printed vs. unprinted BOPP tape backing area, adhesive-ink interface compatibility testing)

Txoj Cai (EU) No 10/2011.Cov ntaub ntawv yas thiab cov khoom tsim los tiv tauj cov zaub mov. European Parliament thiab Council, 2011, raws li hloov. (Kev txwv tsis pub nkag mus rau zaub mov rau cov khoom siv tus cwj mem, thim rov qab- luam ntawv laminate ua haujlwm cuam tshuam qhov yuav tsum tau ua, cov txheej txheem tswj hwm rau kev ua raws li cov zaub mov ntim number case)