Puas yog cov ntawv nplaum tsis muaj dej tsis muaj roj tiag tiag - thiab tshuaj lom neeg - tiv taus? Cov qauv ntsuas koj yuav tsum paub

Cov ntawv nplaum tsis muaj dej yog siv dav hauv cov khoom ntim hauv chav ua noj, lub raj mis kuaj, cov khoom siv tsheb, thiab cov thawv ntim khoom lag luam. Ntau tus neeg muag khoom hais tias lawv cov ntawv yog "roj-resistant" lossis "chemically resistant." Tab sis puas yog tag nrho cov ntawv tsis muaj dej tsis zoo tiv taus cov roj thiab cov tshuaj hnyav? Cov lus teb luv luv yog: nws nyob ntawm. Yog tias tsis muaj kev ntsuas tus qauv, daim ntawv lo uas muaj sia nyob hauv dej yuav ua tsis tiav tam sim ntawd thaum raug rau tes pleev, roj ua noj, lossis cov ntaub so hnyav. Kab lus no piav qhia txog cov qauv ntsuas tseem ceeb uas koj yuav tsum paub, pab koj xaiv lossis yuav cov ntawv tsis muaj dej tsis zoo uas ua tau zoo hauv qhov chaw nyuaj.

Hauv kev lag luam daim ntawv lo, "waterproof" feem ntau txhais tau hais tias daim ntawv lo siv - ntsej muag khoom, nplaum, thiab txheej saum toj kawg nkaus - tuaj yeem tiv taus ncaj qha rau cov dej noo tsis poob adhesion lossis legibility. Cov ntaub ntawv tsis muaj dej muaj xws li polypropylene (PP), polyethylene (PE), polyester (PET), thiab yas. Txawm li cas los xij, dej tsis kam tsis tuaj yeem sib npaug ntawm cov roj lossis tshuaj lom neeg.

Cov dej molecules yog polar thiab kuj loj. Cov roj thiab ntau yam tshuaj (xws li cov kuab tshuaj, kua qaub, lossis cov tshuaj ntxuav alkaline) tsis yog -polar lossis reactive heev. Ib daim ntawv lo cov ntaub ntawv uas repels dej tej zaum yuav nqus tau roj los yog tawg nyob rau hauv acetone, isopropyl cawv, los yog roj. Yog li ntawd, yog tias koj daim ntawv thov muaj cov kua ntsw, lubricants, roj, los yog cov tshuaj ntxuav, koj tsis tuaj yeem cia siab rau cov ntaub ntawv tsis muaj dej ib leeg.

Ob peb txoj kev lees paub thoob ntiaj teb ntsuas seb cov ntaub ntawv lo lus teb rau cov roj thiab tshuaj li cas. Hauv qab no yog cov qauv tsim nyog tshaj plaws uas siv los ntawm cov kws tshaj lij thiab cov chaw kuaj sim.

Cov qauv no ntsuas qhov pom thiab ua haujlwm hloov pauv ntawm lub siab- daim ntawv lo rhiab tom qab raug cov kua. Nws npog cov tshuaj lom neeg xws li:

Mineral roj

Ua noj roj

Isopropyl cawv (IPA)

Acetic acid (Vinegar)

Sodium hydroxide (alkaline ntxuav)

Qhov ntsuas ntsuas li cas:
Adhesion zog, number case smearing, khoom o, delamination, thiab xim hloov.

TS EN ISO 18177 Kev tiv thaiv rau roj thiab roj

ISO 18177 tsom tshwj xeeb rau roj thiab roj tsis kam. Cov qauv kuaj tau muab tso rau hauv kev sib cuag nrog cov roj lossis roj ntawm qhov ntsuas kub (feem ntau 23℃lossis 40℃). Tom qab lub sijhawm teem sijhawm - feem ntau yog 24 lossis 72 teev - daim ntawv lo raug tshuaj xyuas rau ntug lifting, poob ntawm opacity, los yog nplaum los ntshav.

FINAT Test Method No. 9 – Resistance to Liquids

FINAT (lub koom haum thoob ntiaj teb rau tus kheej -cov chaw tsim khoom nplaum nplaum) txoj kev 9 yog siv dav hauv Tebchaws Europe. Ib daim ntawv lim dej uas kho nrog cov kua ntsuas (piv txwv li, roj txiv roj, ethanol, lossis tshuaj ntxuav tes) muab tso rau ntawm daim ntawv luam tawm ntawm qhov hnyav. Tom qab 24 teev, daim ntawv lo raug muab tshem tawm thiab xyuas kom pom kev puas tsuaj.

Thaum sib piv cov khoom los ntawm cov neeg muag khoom sib txawv, nrhiav cov kab lus hauv qab no hauv daim ntawv qhia cov ntaub ntawv lossis daim ntawv qhia tshuaj lom neeg:

"Zoo heev kuj"- Tsis pom qhov hloov pauv tom qab 24+ teev

"Zoo resistance"- Me me gloss hloov los yog me ntsis ntug o

"Limited resistance"- Pom kev puas tsuaj los yog tsis muaj adhesion poob

"Tsis pom zoo"- Kev ua tsis tiav hnyav

Ib tus neeg muag khoom ntseeg siab yuav qhia meej txog cov kev sim uas siv. Yog tias cov khoom lag luam tsuas yog lees tias "waterproof" tab sis tsis muaj cov ntaub ntawv ntawm cov roj lossis tshuaj lom neeg, ua raws li kev ceev faj.

Cov khoom siv dej tsis sib txawv coj txawv txawv thaum raug cov roj thiab cov tshuaj hnyav.

Polyester (PET)

Roj kuj:Zoo heev

Tshuaj tiv thaiv:Zoo rau kev ua tau zoo (tiv thaiv IPA, cov kua qaub me me, thiab cov tshuaj ntxuav tsev feem ntau)

Qhov zoo tshaj plaws rau:Laboratory ntawv, ntim tshuaj, khoom siv

Polypropylene (PP)

Roj kuj:Nruab nrab mus rau qhov zoo (tiv taus roj ua noj tab sis tsis muaj zog hnyav)

Tshuaj tiv thaiv:Nruab nrab (tej zaum yuav o hauv acetone lossis xylene)

Qhov zoo tshaj plaws rau:Ntim cov zaub mov, lub raj mis kom zoo nkauj, dej -cov ntawv xa khoom tiv thaiv

Vinyl

Roj kuj:Zoo

Tshuaj tiv thaiv:Nruab nrab (yuav puas los ntawm cov kuab tshuaj muaj zog)

Qhov zoo tshaj plaws rau:Cov khoom siv sab nraum zoov, cov ntawv cim marine, cov cim ceeb toom tshuaj lom neeg ib ntus

Polyethylene (PE)

Roj kuj:Poob rau nruab nrab

Tshuaj tiv thaiv:Tsis zoo (feem ntau swells lossis softens)

Qhov zoo tshaj plaws rau:Kev siv dej tsis zoo dav dav yam tsis muaj roj / tshuaj lom neeg

Pro tswv yim:Rau siab tshaj plaws roj thiab tshuaj tiv thaiv, xaiv polyester (PET) nrog ib tug ruaj khov acrylic nplaum. Cov kuab tshuaj-raws li cov nplaum feem ntau ua tau zoo dua dej-raws li cov nplaum nyob rau hauv ib puag ncig oily.

Txawm tias cov neeg siv khoom paub txog qee zaum ua ib qho ntawm cov yuam kev no:

Piv txwv tias tag nrho cov ntawv tsis muaj dej tsis zoo yog tshuaj lom neeg -resistant
cuav. Dej tsis kam yog qhov qis qis; tshuaj tiv thaiv yuav tsum tau cov khoom siv engineering.

Kev ntseeg cov ntawv tuab ib txwm ua tau zoo dua
cuav. Ib daim ntawv lo nyias polyester nrog rau sab saum toj lub tsho tiv no feem ntau outlass ib daim ntawv tuab tuab hauv cov tshuaj lom neeg.

Xav tias daim ntawv ntshiab tsis muaj zog dua li cov dawb
Tsis tas li. Ntau daim ntawv PET ntshiab muaj cov tshuaj tiv thaiv tib yam li cov ntawv dawb.

Ua raws li plaub kauj ruam no thaum xaiv lossis yuav cov ntawv tsis muaj dej rau cov roj lossis tshuaj lom neeg.

Kauj Ruam 1 - Qhia tag nrho cov kua dej uas daim ntawv lo yuav tiv tauj

Sau txhua yam khoom siv: roj ua noj, tshuaj ntxuav tes (70% IPA), tshuaj ntxuav tes, roj, tshuaj dawb, thiab lwm yam.

Kauj Ruam 2 - Muab cov khoom sib xyaw rau cov kua dej hnyav tshaj plaws

Yog hais tias ib yam khoom muaj zog heev (xws li, acetone los yog toluene), xaiv polyester nrog ib tug tshuaj - tiv taus lub tsho tiv no. Rau cov roj ua noj xwb, polypropylene yuav txaus.

Kauj Ruam 3 - Tshawb xyuas hom Adhesive

Acrylic nplaum- Cov tshuaj tiv thaiv zoo dav dav

Roj hmab-raws li adhesives- Tsawg tshuaj tiv thaiv tab sis siab pib tack

Silicone nplaum- Zoo heev rau huab cua kub thiab tshuaj lom neeg raug (kim)

Kauj Ruam 4 – Thov Kev Xeem Ua Ntej

Tsis txhob cia siab rau cov nplooj ntawv spec. Siv ib daim ntawv lo rau koj lub thawv tiag tiag, muab tso rau hauv lub hom phiaj tshuaj rau 24-72 teev, thiab tshuaj xyuas kom tshem tawm, tshem tawm xim, los yog tus cwj mem puas.

Xaus

Cov ntawv nplaum tsis muaj dej tsis tuaj yeem tiv taus cov roj thiab tshuaj. Cov qauv ntsuas zoo li ASTM F2250, ISO 18177, thiab FINAT Method 9 muab lub hom phiaj los txheeb xyuas qhov ua tau zoo. Thaum koj xav tau los yuav lossis xaiv cov ntawv rau qhov xav tau ib puag ncig, saib xyuas cov ntaub ntawv polyester (PET), xyuas cov nplaum nplaum, thiab ib txwm thov cov ntaub ntawv tiv thaiv tshuaj tiv thaiv txuas rau ib tus qauv tshwj xeeb. Los ntawm kev nkag siab txog cov qauv kev sim no, koj tuaj yeem zam tsis tau daim ntawv lo tsis ua haujlwm thiab tswj cov khoom lag luam kev nyab xeeb, ua raws, thiab hom duab.

1. Kuv puas tuaj yeem siv cov ntawv nplaum tsis muaj dej tsis zoo rau ntawm lub cav roj fwj?
Yog lawm, tab sis tsuas yog tias daim ntawv lo yas yas suav nrog cov tshuaj - tiv taus lub tsho tiv no thiab cov kuab tshuaj -raws li nplaum nplaum. Standard vinyl tsis muaj tshuaj tiv thaiv yuav soften los yog nqa nyob rau hauv hnub ntawm cov roj raug. Rau lub sijhawm ntev - lub sijhawm sau cov roj cav, polyester (PET) yog qhov kev xaiv zoo dua.

2. Dab tsi yog qhov txawv ntawm cov roj- tiv taus thiab roj- cov ntawv tiv thaiv?
Roj kuj feem ntau yog hais txog cov roj ua kua (piv txwv li, roj txiv roj, roj cav). Roj kuj feem ntau siv rau semi- cov rog rog (piv txwv li, butter, luv luv). Ntau cov ntaub ntawv tiv thaiv ob qho tib si, tab sis nco ntsoov xyuas cov ntaub ntawv xeem. Qee cov ntawv xeem dhau kev xeem roj tab sis ua tsis tau cov roj ntsuas vim qhov sib txawv ntawm qhov nqus.

3. Puas yog lamination txhim kho tshuaj tiv thaiv?
Yog lawm, ib qho ntshiab polyester lossis polypropylene laminate ntxiv ib qho kev tiv thaiv. Lamination tuaj yeem txhim kho kev tiv thaiv rau cov tshuaj me me thiab puas. Txawm li cas los xij, yog tias cov nplaum ua tsis tau tshuaj, lamination ib leeg yuav tsis daws qhov teeb meem.

4. Kuv tuaj yeem kuaj daim ntawv nplaum hauv tsev li cas rau cov tshuaj tiv thaiv?
Ib txoj hauv kev yooj yim: siv daim ntawv lo rau lub iav huv lossis hlau nto. Muab ob peb tee ntawm lub hom phiaj tshuaj (xws li, roj ua noj lossis tshuaj ntxuav tes) rau ntawm daim ntawv lo. Npog nrog lub khob me me kom tiv thaiv evaporation. Tom qab 24 teev, so tawm cov kua thiab xyuas qhov o, softening, los yog number case khiav.

5. Puas yog FDA-raws li cov ntawv tsis muaj dej tsis zoo kuj muaj tshuaj lom neeg- tiv taus?
Tsis tas li. Kev ua raws li FDA tsom rau kev nyab xeeb ntawm cov zaub mov tsis ncaj, tsis muaj tshuaj lom neeg. Ib daim ntawv FDA-raws li daim ntawv lo tseem yuav ua tsis tau thaum raug cov zaub mov muaj kua qaub (xws li kua txiv qaub) lossis cov kua dej cawv ntau. Ib txwm txheeb xyuas cov tshuaj tiv thaiv kab mob sib cais los ntawm kev ua raws cai.