cellophane

Cellophane ndiye chida chakale kwambiri chomwe chimagwiritsidwa ntchito kukulunga makeke, maswiti ndi mtedza.Cellophane idagulitsidwa koyamba ku United States mu 1924 ndipo inali filimu yoyamba yonyamula katundu yomwe idagwiritsidwa ntchito mpaka ma 1960s.Pamsika wamasiku ano wosamala kwambiri zachilengedwe, cellophane ikubwereranso.Chifukwa cellophane ndi 100% biodegradable, imawoneka ngati njira yabwino kwambiri yosamalira zachilengedwe kuposa zoyika zomwe zilipo kale.Cellophane ilinso ndi kuchuluka kwa nthunzi wamadzi komanso kusinthasintha kwabwino komanso kutentha kwa kutentha, zomwe zikuwonjezera kutchuka kwake pamsika wazolongedza zakudya.

Mosiyana ndi ma polima opangidwa ndi anthu m'mapulasitiki, omwe makamaka amachokera ku petroleum, cellophane ndi polima wachilengedwe wopangidwa kuchokera ku cellulose, yomwe ndi gawo la zomera ndi mitengo.Cellophane samapangidwa kuchokera kumitengo yamvula, koma kuchokera kumitengo yomwe imabzalidwa ndikukololedwa makamaka kuti apange cellophane.

Cellophane amapangidwa pogaya matabwa ndi thonje zamkati motsatizana zamadzi osambira amankhwala omwe amachotsa zonyansa ndikuphwanya maunyolo aatali a fiber muzinthu izi.Kusinthidwa kukhala filimu yowoneka bwino, yonyezimira yokhala ndi mankhwala opangira pulasitiki omwe amawonjezeredwa kuti azitha kusinthasintha, cellophane akadali wopangidwa ndi mamolekyu a crystalline cellulose.

Izi zikutanthauza kuti ikhoza kuphwanyidwa ndi tizilombo toyambitsa matenda m'nthaka monga masamba ndi zomera.Cellulose ndi m'gulu la mankhwala omwe amapezeka mu organic chemistry otchedwa carbohydrates.Chigawo choyambirira cha cellulose ndi molekyulu ya glucose.Zikwizikwi za mamolekyu a shuga amenewa amaunjikana pakukula kwa mmerawo n’kupanga unyolo wautali wotchedwa cellulose.Unyolowu, nawonso, umasweka popanga kupanga mafilimu a cellulose omwe amagwiritsidwa ntchito osakutidwa kapena zokutira m'mapaketi.

Akaikidwa m'manda, mafilimu osaphimbidwa a cellulose amawonongeka m'masiku 10 mpaka 30;Mafilimu opangidwa ndi PVDC anapezeka kuti amawonongeka m'masiku 90 mpaka 120, ndipo cellulose yokutidwa ndi nitrocellulose inawonongeka m'masiku 60 mpaka 90.

Mayesero awonetsa kuti nthawi yokwanira yomaliza kusokoneza mafilimu a cellulose ndi masiku 28 mpaka 60 pazinthu zosakutidwa ndi masiku 80 mpaka 120 pazovala za cellulose zokutira.M'madzi a m'nyanja, kuchuluka kwa biodegradation kunali masiku 10 kwa filimu yosakutidwa ndi masiku 30 a filimu yophimbidwa ya cellulose.Ngakhale zinthu zimene zimaonedwa kuti n’zowonongeka kwambiri, monga mapepala ndi masamba obiriŵira, zimatenga nthaŵi yaitali kuti ziwonongeke kusiyana ndi zopangidwa ndi filimu za cellulose.Mosiyana ndi zimenezi, mapulasitiki, polyvinyl chloride, polyethylene, polyethylene terephthalate ndi oriented polypropylene sanasonyeze zizindikiro zochepa za kuwonongeka pambuyo poika maliro kwa nthawi yaitali. 

Mafilimu a Cellophane amagwiritsidwa ntchito m'mabuku osiyanasiyana, kuphatikizapo:

-Maswiti, makamaka zopindika

- Kuwala kwa makatoni

- Yisiti

- tchizi wofewa

- Kupaka kwa tampon

- Ntchito zosiyanasiyana zamafakitale monga ma substrates a matepi odzimatira okha, ma membranes otha kulowa mumitundu ina ya mabatire, ndi zotulutsa popanga fiberglass ndi zinthu za rabara.

- chakudya kalasi

- Kupaka kwa nitrocellulose

- PVDC zokutira

- Pharmaceutical Packaging

- zomatira tepi

- Kanema wamtundu