i-cellophane

I-Cellophane ingumkhiqizo omdala wokupakisha ocacile osetshenziselwa ukugoqa amakhukhi, amaswidi namantongomane.I-Cellophane yaqala ukukhangiswa e-United States ngo-1924 futhi kwakuyifilimu yokuqala yokupakisha eyasetshenziswa kuze kube ngama-1960s.Emakethe yanamuhla ekhathalela kakhulu imvelo, i-cellophane iyabuya.Ngenxa yokuthi i-cellophane ingabola ngo-100%, ibonwa njengenye indlela evumelana nemvelo kunokupakishwa okukhona.I-Cellophane futhi inesilinganiso somhwamuko wamanzi esimaphakathi kanye nokusebenziseka kahle kakhulu kanye nokuvaleleka kokushisa, okungeza ekudumeni kwayo kwamanje emakethe yokupakisha ukudla.

Ngokungafani nama-polymer enziwe abantu kumapulasitiki, atholakala ikakhulukazi ku-petroleum, i-cellophane iyi-polymer yemvelo eyenziwe nge-cellulose, eyingxenye yezitshalo nezihlahla.I-Cellophane ayenziwe ngezihlahla zehlathi lemvula, kodwa ngezihlahla ezitshalwe futhi zivunwa ngokukhethekile ukukhiqizwa kwe-cellophane.

I-Cellophane yenziwa ngokugaya ukhuni kanye ne-pulp kakotini ochungechungeni lwamakhemikhali okugeza asusa ukungcola futhi aphule amaketanga amade e-fiber kule nto eluhlaza.Ivuselelwe yaba ifilimu ecacile, ecwebezelayo enamakhemikhali e-plasticizing angezwe ukuze kuthuthukiswe ukuguquguquka, i-cellophane isakhiwa ikakhulukazi ama-molecule e-crystalline cellulose.

Lokhu kusho ukuthi ingahlukaniswa ngama-microorganisms emhlabathini njengamahlamvu nezitshalo.I-Cellulose ingeyesigaba sezinhlanganisela ku-organic chemistry ebizwa ngokuthi ama-carbohydrate.Iyunithi eyisisekelo ye-cellulose yi-molecule ye-glucose.Izinkulungwane zala ma-molecule eglucose anqwabelana ndawonye phakathi nomjikelezo wokukhula kwesitshalo ukuze zakhe amaketanga amade abizwa ngokuthi i-cellulose.Lawa maketango, nawo, aphuka ngesikhathi sokukhiqiza ukuze akhe amafilimu e-cellulose asetshenziswa ngendlela engamboziwe noma ehlanganiswe emaphaketheni.

Lapho engcwatshwa, amafilimu e-cellulose angagcotshiwe ngokuvamile awonakaliswa ezinsukwini eziyi-10 kuya kwezingu-30;Amafilimu ahlanganiswe ne-PVDC atholakale ehla ezinsukwini ezingu-90 kuya kwezingu-120, futhi i-cellulose ehlanganiswe ne-nitrocellulose yonakaliswa ezinsukwini ezingu-60 kuya kwezingu-90.

Ukuhlola kubonise ukuthi isilinganiso sesikhathi esiphelele sokuqeda ukuwohloka kwemvelo kwamafilimu e-cellulose yizinsuku ezingama-28 kuya kwezingu-60 emikhiqizweni engagcotshiwe kanye nezinsuku ezingama-80 kuya kweziyi-120 emikhiqizweni embozwe nge-cellulose.Emanzini echibi, izinga le-biodegradation laliyizinsuku eziyi-10 zefilimu engagcotshiwe kanye nezinsuku ezingama-30 zefilimu ye-cellulose embozwe.Ngisho nezinto ezibhekwa njengezinokonakala kakhulu, njengephepha namaqabunga aluhlaza, kuthatha isikhathi eside ukuwohloka kunemikhiqizo yefilimu ye-cellulose.Ngokuphambene, amapulasitiki, i-polyvinyl chloride, i-polyethylene, i-polyethylene terephthalate kanye ne-polypropylene e-oriented yabonisa uphawu oluncane lokuwohloka ngemva kokungcwatshwa isikhathi eside. 

Amafilimu e-Cellophane asetshenziswa ezinhlelweni zokupakisha ezahlukahlukene, kufaka phakathi:

– Candy, ikakhulukazi twist ukugoqa

- I-Cardboard lamination

– Imvubelo

– ushizi othambile

- Ukupakishwa kwe-tampon

- Izinhlelo zokusebenza ezahlukahlukene zezimboni ezifana nama-substrates amateyipu azinamathiselayo, ulwelwesi oluvunyelekayo ezinhlotsheni ezithile zamabhethri, kanye nama-ejenti akhululayo ekwenzeni i-fiberglass nemikhiqizo yerabha.

– izinga lokudla

- I-nitrocellulose enamathela

- Ukuhlanganiswa kwe-PVDC

- Pharmaceutical Packaging

- i-tape yokunamathisela

– Ifilimu yombala