cov khoom

Yuav ua li cas sib tov Solvent-dawb Adhesive?

Tam sim no muaj ob hom kev hnyav-dawb nplaum rau cov khoom ntim yooj yim, ib qho thiab ob qho tib si.Ib qho kev tivthaiv yog tsuas yog siv rau cov ntawv thiab nonwovens, uas tuaj yeem ua haujlwm yam tsis muaj kev sib xyaw thiab tsis hloov qhov sib piv.Dual Cheebtsam tuaj yeem siv rau ntau hom kev ntim khoom yooj yim.Raws li kev paub ntawm tus kheej, nplooj ntawv no yuav piav qhia txog yuav hloov pauv qhov piv ntawm ob lub ntsiab lus sib txawv thiab nws ua haujlwm li cas.

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Ua ntej, qhov sib tov sib piv txoj cai ntawm cov kuab tshuaj tsis muaj laminated binders yog tsim.

Muaj peb yam ntawm qhov sib tov sib xyaw tsim ntawm cov kuab tshuaj tsis pub dawb laminating nplaum:

1. Sim ua kom sib xyaw ua ke ntawm A & B Cheebtsam rau qhov hnyav.

A / B's compact blending ratio muaj qhov zoo ntawm qhov hnyav tib yam.Piv txwv li, X yog 100A sib xyaw nrog 90B, Y yog 100A thiab 50B.1% kev hloov B yuav ua rau 1.1% qhov hnyav hloov ntawm A tivthaiv ntawm X thiab 2% ntawm Y. Feem ntau, 2% kev hloov pauv hauv qhov sib xyaw ua ke tau txais thaum lub sijhawm tsim khoom, ua rau muaj qhov hnyav hloov ntawm 2.2 % thiab 4%.Yog tias lawv qhov hnyav sib txawv heev, qhov no tuaj yeem ua rau muaj qhov tsis xws luag:

(1) A / B Cheebtsam yog qhov nyuaj rau kev sib xyaw kom zoo kom cov dej sib tov tsis sib xws.

(2) Vim tias tsis muaj cov ntsiab lus B, lub siab ntawm cov khoom sib tov yog tsawg dhau los ua kom cov dej ntws tsis tu ncua, uas ua rau muaj qhov sib txawv ntawm cov nplaum thiab txo qis ntawm cov khoom.

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2. Raws li ze li sai tau rau cov viscosity ntawm A & B Cheebtsam

Qhov qis dua qhov viscosity ntawm tivthaiv A & B ntawm qhov tsim nyog kub, qhov sib xyaw ua haujlwm zoo dua.Xav txog qhov kev txiav txim ntawm cov binder, thawj viscosity ntawm ob qho tib si sib txawv heev.Kub yuav tsum tau tswj nyias los kho tus nqi viscous.Ua kom qhov kub thiab txias ntawm qhov qub nrog cov viscosity siab dua ua rau nws nyob ze rau lwm qhov, thiab muaj txiaj ntsig zoo rau ob qho tib si cov khoom siv ntsuas ntsuas thiab cov twj tso kua mis tso tawm.

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3. Kev ua siab ntev ntawm A & B sib tov

Vim muaj qee yam sab nraud hauv laminating, yuav tsum muaj qee qhov sib txawv hauv kev sib xyaw ua ke.Kev nthuav dav ntawm kev kam rau siab ntawm A / B kev sib xyaw ua ke sib xyaw tuaj yeem ua rau muaj txiaj ntsig zoo ntawm qhov kev sib txawv no.Piv txwv li, cov kuab tshuaj tsis muaj nplaum nplaum WD8118A / B ntawm cov khoom siv tshiab yog los ntawm kev sib xyaw ua ke ntawm 100: 75 mus rau qhov sib xyaw ntawm 100: 60 - 85, ob qho tib si siv tau thiab tau txais txiaj ntsig zoo los ntawm ntau tus neeg siv khoom.

Thib ob, lub hauv paus ntsiab lus thiab txoj kev sib xyaw ua ke hloov kho

(1) Kho rau ambient kub thiab av noo

Feem ntau, cov ntsiab lus ntawm NCO nyob rau hauv Cheebtsam A yog siab dua, thaum cov tshuaj tiv thaiv nrog huab cua thiab vapor nyob rau hauv zaj duab xis yog nyob rau sab laug.Txawm li cas los xij, thaum lub caij ntuj sov, thaum muaj cov pa ntau dua hauv huab cua thiab cov yeeb yaj kiab muaj cov dej noo ntau dua, cov khoom siv A yuav tsum tau nce ntxiv kom haus cov pa ntau dhau, uas yuav pab txhawb qhov tsim nyog cov tshuaj tiv thaiv ntawm cov nplaum.

(2) Kho rau cov khoom siv number case thiab hnyav residue

Feem ntau cov ntim tau yooj yim yog cov ntawv luam tawm, cov txheej txheem luam ntawv hauv tsev yog nrog cov kuab tshuaj hnyav gravure luam ntawv.Nyob rau hauv cov kuab tshuaj raws li ib tug additive yuav muaj diluent thiab retarder, ob leeg yog polyurethane resin system, nyob rau hauv cov nplaum nrog NCO cov tshuaj tiv thaiv yuav haus ib co NCO.

Peb txhawj xeeb nrog purity thiab noo noo cov ntsiab lus ntawm residual hnyav.Lawv yuav nyob twj ywm ntau dua los yog tsawg dua ntawm cov ntawv luam tawm, thiab cov seem uas muaj cov hydrogen yuav haus ib co NCO.Yog tias thinner thiab retarder residues siab dua, peb tuaj yeem ntxiv cov ntsiab lus A los txhim kho cov txiaj ntsig.

(3) Kho rau aluminium hloov

Ntau cov ntaub ntawv ntim tau yooj yim yog tam sim no aluminized, thiab cov nyhuv ntawm kev ntxhov siab ntawm cov txheej tuaj yeem txo los ntawm kev kho qhov sib xyaw ntawm A / B Cheebtsam kom soften lawv, feem ntau nce B tivthaiv kom tsim nyog thiab txo lub xeev hloov ntawm txhuas los ntawm kev cuam tshuam adhesives. .

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Lub sij hawm xa tuaj: Plaub Hlis-22-2021