Ib qho yooj yim thiab yooj yooj yim mem hluav mem hluav yog ib qho txiaj ntsim ntawm qhov chaw ua hauj lwm ntawv

Lub glue mem hluav yog invented los ntawm tus kws kho mob German ntawm lub npe nrov Henkel hauv 1969. Qhov yoojyim ntawm qhov tsim tau raug tshuaj los ntawm cov neeg yuav khoom sai, vim tias nws tau ua tiav zoo rau lub tuam txhab. Tsuas yog nyob rau hauv xyoo ntawd tau muag txog ib txhiab voj pwm hauv 121 lub xeev. Txij thaum ntawd los, cov neeg tau txais kev pab tau txais kev pabcuam sai thiab huv. Nws coj ntau tshaj plaub caug xyoo, tab sis lub chaw ua hauj lwm cov kua nplaum lo nrog cwjmem, cwj mem qhuav, daim ntawv clips thiab lwm yam chaw ua hauj lwm cov khoom siv yuav siv sij hawm muaj nuj nqis ntawm qhov chaw. Qhov no yog facilitated los ntawm yooj yim ntawm kev siv, kev khwv nyiaj txiag, mobility thiab efficiency ntawm cov khoom.

Cov xim xaum xim yog hais txog cov khoom sib txawv. Nws yog tsim rau gluing cardboard, duab, ntawv, textiles. Yas cev-lo yog ib qho yooj yim siv. Nws tsim muaj kev lom zem, ci, kaj thiab nruj. Lub hermetic cap yog yooj yim kaw nyob rau hauv ib txoj cia nrog ib tus cwj pwm nias thiab tswj lub ziab ntawm kua nplaum thiab cov evaporation ntawm noo noo. Txoj kev sib tw ntawm tus pas nrig, nyob hauv lub hauv paus, tso cai rau koj kom khov ntswj thiab qhib lub nplaum rau sab nraud.

Qhov zoo ntawm cov nplaum yog pom tseeb:

• Sai sai dries;
• Yooj yim ntxuav tawm tes;
• Zoo siab thiab nti tawm tau zoo;
• Tsis txhob tau lo av;
• Yoo tsis muaj cov pom;
• Tsis deform cov qhov rai zoo;
• Tsis crumble;
• Siv cov nyiaj khov kho;
• Dissolves hauv dej.

Vim nws cov khoom siv tshuaj, lub nplaum xaum qhov chaw tawm lub nplaum silicate kua nplaum.

Lub kua nplaum-xaum yog thov kom khov thiab sib npaug hauv ib txheej nyias, tsis muaj creeping tawm ntawm cov nplaum nplaum. Lub taub hau ntawm lub pas tso cai rau koj siv ob txoj kab nqaim thiab dav, thoob plaws qhov dav ntawm txoj kab uas hla ntawm lub pas nrig. Adhesive properties of glue-pencil tshwm nyob rau hauv ib nrab ib feeb tom qab siv gluten, uas tso cai rau koj los kho qhov uas tsis nyob rau hauv lub sij hawm nyob rau hauv tus txheej txheem ntawm kev ruaj ntseg cov ntaub ntawv. Cov kua nplaum yuav tsum tsis txhob muaj cov qog thiab xauv pob txha, yog thaum twg cov ntaub ntawv yuav muab ntub thiab ua kom pom qhov txawv txav, thiab tus pas nrig tau tig mus rau hauv cov khoom tsis sib xws.

Kua nplaum-xaum. Muaj pes tsawg leeg

Tag nrho cov nplaum xaum qhuav yog ua los ntawm ib qho tsis muaj tshuaj lom biopolymer polyvinylpyrrolidone (PVP) los yog cov khoom uas tsis muaj xim thiab tsis muaj xim - polyvinyl acetate (PVA), uas yog siv cov thickeners. Lawv nplaum tib yam, tab sis lub kua nplaum nrog cov kab txawv ntawm PVP khaws cov khoom nplaum rau ntev dua. Raws li ib tug moisturizer nyob rau hauv muaj pes tsawg leeg muaj natural glycerin,
Nws muab txoj kev pab lub neej ntev ntev thiab kho cov khoom ntawm lub nplaum. Nws tso cai rau koj kom yooj yim thov kua nplaum ib txheej, nyias qhov noj tau.

Cov nplaum xaum xim tsis muaj cov kuab tshuaj thiab cov khoom xyaw xim. Nws muaj kev ruaj ntseg zoo rau tib neeg kev noj qab haus huv. Qhov zoo tshaj plaws concentration ntawm adhesives kom ceev thiab muaj zog gluing ntawm cov ntaub ntawv. Nyob rau tib lub sij hawm, daim ntawv yog impregnated tusyees thiab tsis wetted. Cov kob lo lo ntxiv xim liab los yog xiav, uas tom qab so qhuav lub nplaum txheej disappears. Nws yog pom tseeb ntawm daim ntawv thiab pab ua ntawv thov cov khoom kom raug thiab yog lawm.