Shrink zaj duab xis yog cov khoom siv yas yas uas siv cov cua sov-vim shrinkage los qhwv thiab tiv thaiv cov khoom. Nws cov txheej txheem tsim muaj ntau theem, suav nrog kev npaj raw khoom, extrusion molding, ncab, txias, luam ntawv, txiav, thiab ntim. Kev tshawb fawb thiab kev tswj xyuas cov txheej txheem ua kom ntseeg tau tias cov yeeb yaj kiab shrink ua tiav cov pob tshab zoo, kev ua haujlwm zoo, lub zog txhua yam, thiab kev ruaj ntseg rau cov ntawv ntim sib txawv.
Thawj kauj ruam hauv shrink film ntau lawm yog kev npaj cov khoom siv raw. Raws li daim ntawv thov, cov tuam txhab xaiv cov khoom siv polymer sib txawv ua cov khoom tseem ceeb, suav nrog polyvinyl chloride (PVC), polyethylene (PE), polyester (PET), thiab polyolefin (POF). Cov khoom siv tsim nyog xws li cov yas yas, cov stabilizers, cov tshuaj tua kab mob antioxidant, thiab cov roj nplua nyeem kuj tseem tuaj yeem raug ntxiv los txhim kho kev yooj yim, ua haujlwm kub, thiab kev ua haujlwm.
Tom qab xaiv cov khoom, cov ntaub ntawv raw nkag mus rau hauv cov txheej txheem sib tov. Cov khoom sib txawv yog sib xyaw kom zoo siv cov khoom siv siab - nrawm sib xyaw kom ntseeg tau tias kev faib tawm tsis sib xws thiab kev ua yeeb yaj kiab ruaj khov thaum lub sijhawm tsim khoom. Rau cov ntawv thov tshwj xeeb, cov tuam txhab lag luam tuaj yeem ntxiv eco-cov ntaub ntawv tus phooj ywg, cov khoom siv tiv thaiv- zoo li qub, lossis cov khoom siv ntxiv kom tau raws li cov kev ntim tshwj xeeb.
Cov khoom sib xyaw ces mus rau theem extrusion molding. Nyob rau hauv lub extruder, yas hais yog melted nyob rau hauv siab kub thiab thawb rau pem hauv ntej los ntawm ib tug ntsia hlau mechanism los tsim ib tug uniform molten khoom. Cov khoom molten yog ces yuam los ntawm ib tug tuag los tsim ib tug nruam zaj duab xis qauv. Thaum lub sij hawm extrusion, qhov kub thiab txias, siab, thiab ceev yuav tsum tau ua tib zoo tswj kom tswj tau cov zaj duab xis tuab tuab.
Tom qab extrusion, zaj duab xis undergoes stretching, uas yog ib tug ntawm cov tseem ceeb tshaj plaws kauj ruam nyob rau hauv shrink zaj duab xis ntau lawm. Los ntawm cov txheej txheem stretching los yog biaxial stretching, polymer chains hauv zaj duab xis yog teem rau hauv cov lus qhia tshwj xeeb thiab khaws cia lub zog. Thaum raug tshav kub tom qab, zaj duab xis rov qab mus rau nws qhov qub molecular lub xeev thiab tsim shrinkage. Qhov sib txawv stretching ratios cuam tshuam tus nqi qis, lub zog, thiab kev ua haujlwm tag nrho.
Cov zaj duab xis stretched yog ces txias thiab stabilized los tswj nws cov yam ntxwv khoom thiab tiv thaiv deformation thaum lub sij hawm ua ntxiv. Kev tshuaj xyuas zoo kuj tau ua thaum lub sijhawm tsim khoom, suav nrog kev ntsuas thickness, kev kuaj pom pom, kev ntsuas qhov sib piv, thiab kev ntsuas lub zog tensile kom paub meej cov khoom zoo.
Raws li cov neeg siv khoom xav tau, qee cov yeeb yaj kiab shrinking tau ua cov txheej txheem luam ntawv. Cov thev naus laus zis xws li gravure luam ntawv, flexographic luam ntawv, thiab cov luam ntawv digital tuaj yeem siv los ntxiv cov cim npe, cov ntaub ntawv cov khoom, thiab cov duab kos duab zoo nkauj rau lub ntsej muag zaj duab xis, txhim kho cov khoom ntim. Kev kho ntxiv xws li lamination thiab txheej txheej kuj tseem siv tau los txhim kho kev ua haujlwm ntev thiab kev ua haujlwm.
Thaum kawg, tsim nyog shrink zaj duab xis yog ua tiav los ntawm slitting, winding, thiab ntim cov txheej txheem los tsim cov khoom tiav hauv cov khoom sib txawv. Tiav lawm shrink zaj duab xis yuav tsum muaj kev ruaj khov shrinkage kev ua tau zoo, zoo li zoo, thiab muaj zog ntim adaptability ua ntej yuav raug xa mus rau kev siv tswv yim.
Zuag qhia tag nrho, shrink film manufacturing yog ib tug txheej txheem kev sib txuas cov ntaub ntawv science, yas ua technology, thiab ntim engineering. Txhua theem tsim khoom, los ntawm kev xaiv cov khoom siv mus rau qhov kawg ua tiav, cuam tshuam rau kev ua haujlwm ntawm cov khoom tiav. Nrog rau kev txhim kho cov khoom siv ruaj khov thiab cov thev naus laus zis tsim khoom, cov txheej txheem tsim cov yeeb yaj kiab yuav txuas ntxiv txhim kho, muab cov kev daws teeb meem zoo dua thiab txhim khu kev qha rau kev lag luam ntim niaj hnub.
