Ukuthi i-handling ezihlukene njani zikhulisa ukuphupha kwezisakhiwo zokuvula ezinkulu

Kungani izihlakani zesikhumba zokuvimba zihlula ngokwesikhumba esingasemthwathweni

Ukuthi isikhumba siphakanyiswe kwi-zikhomba zokuhambisana futhi izinhlobo zokukhupha kokukhupha

Ukungafanali kwezikhumba zokuphulula emlandweni wokuphepha kakhulu akubegqina ngaphakathi kwesikrini—kubegqina ngamandla ehandle. Ulo mlando omuhle wakhiwa ngokwezomthetho wokwakha: ukuguqula okuphambili kusukela esikrini esiflexibele kuhandle esisolidi kwenza ukuguqula okuphambili kwezinhamba zokugcina. Uma kufakwa umlando, umlando ugcina ngamandla amaningi kulezi zindawo—lokhu kukhona ngokwezomthetho wokwakha. Kwezikhumba zasepolyethylene, lezi zindawo ziyabecala njengamathuba okuthwala isitha, njengoba umlando owenziwe ngokuphambili ungakhulula ukuthi isikrini siphile ngokuphambili noma isikrini esinkulu sifika ekupheleni kwalo. Uma isitha esincane sishwe, sibuyela ngokushesha ngasembonini yendlela yokuchitha yehandle. Umsebenzi woku-2023 wokuvumela izindlela zokungafanali kwezopolymers wabonisa ukuthi lezi zindawo zokugcina umlando zingakhiwe ukuthi zihlwanise ukuthi umlando owenziwe ngokuphambili uphlanga ngaphezu kwe-60% kunokuthi isikrini esifanayo siphile ngokuphambili.

Izindlela zokuphepha ngokudlika nokuphepha ngokuphambili kwezinhlobo zasepolyethylene (izindlela zokuvumela kwe-ASTM D882)

Umthwalo ongashintshi uveza inselele eyodwa yobunjiniyela; izinto ezisetshenziswayo emhlabeni wangempela zisebenza ngamandla ashukumisayo asheshisa ukwehluleka. Isikhwama esingamakhilogremu angu-25 esiphakanyisiwe futhi sigcinwe siqinile sisebenzisa amandla aqhubekayo okudonsa kodwa ukusiphonsa emgqonyeni, ukusishaya noma ukusithwala kuletha imithwalo yokushaqeka nokunyakaza okuphindaphindwayo okungenza amandla aphezulu aphindwe kabili. I-ASTM D882 inikeza isisekelo esibalulekile sokulinganisa amandla okugcina okudonsa kwe-polyethylene kanye nokwelulwa ekuqhekekeni, kodwa ngokwemvelo i-quasi-static. Abaklami kumelwe bachaze le miphumela ngokuqapha: izinga lokusebenzisa umthwalo lishintsha ngokujulile ukuziphatha kwento. I-film ebonisa ukuqina okukhulu ngaphansi kokudonsa okuhamba kancane, okungaguquguquki ingase ihlukane kalula ngaphansi kokushaqeka okusheshayo, okunamandla amakhulu. Lokhu kuchaza ukuthi kungani izibambo ezidlula ekuhlolweni kwesisindo esimi kahle zisehluleka kabi ezimweni ezinomjikelezo omkhulu noma umthelelaokugcizelela isidingo sezixazululo zobunjiniyela ezifana izikhwama zemfucuza ezenziwe ngensimbi , okuqondisa ukugcina kwamandla, akukho kufunda kuphela umkhawulo wokuphakama. ASTM D882 uyavimisa ubukhulu bakho bokubalwa kwemithombo—akukho kubalwa okuphezulu kakhulu kokubalwa kwesikhathi sokusebenza emhlabeni.

Amasulutioni Okuhleleka: Indlela Okuyiniyo Ukuthi Izikhwama Zokugcina Amasiko Amanye Ayabeka Ubukhulu Bakho Bokuphakama

Ukubhalwa kwezinye izilayiya nezinhlobo zokugcina ngokwesibonelo sokugcina ukuphakama

Izihlakani zesikhumba esisenzekileyo zasebenzisa ukulayishwa kwezinkambo eziningi—okwesibonelo kuyakhiwa ngokudlula kwe-LLDPE (linear low-density polyethylene) enenhkulu nokudlula kwe-LDPE (low-density polyethylene) okunamandla—ukuthi zitholele kubhukha nezinye izinto ezingatholele ngokushisana. Kusikhumba, izinkambo zihlanganiswa ngendlela esinamandla, ekhuphuka kusukela kwezinkambo eziningi kusukela kwezinhlobo zokusebenza zokuphatha izihlakani. Lokhu kubheka isikhundla sokubhekana kwesikhumba, kunciphisa isikhundla sokubhekana esikhulu kusukela kwezinhlobo zokusebenza. Isimo sezinye izinyathelo zokubhekana kuzosiza futhi: zilayishwa ngokuflati ukusukela kwezinye izinyathelo kodwa zihlala zizoba ngokusha ngokugcina kwezinto ezingafanele ngaphandle kokubhekana kwezinye izinyathelo zokubhekana zokusebenza. Izimboni zezindustria zibonisa ukuthi izinhlobo ezilayishwe ngokuphelele nezinye izinyathelo zokubhekana ziyakhuluma ngokuphelele iziqondiso eziningi zokuphatha izihlakani eziningi kune-25 kg ngaphandle kokuphakanyeka kwezikhumba—kubheka kakhulu kwezinhlobo zokusebenza zokuphatha izihlakani eziningi (Material Handling Standards, 2023).

Ukubhekana kwezinkambo zokuphatha nezinkambo zokuphatha ngokushisana: ukubhekana kwezinhlobo zokuphatha kwezihlakani zesikhumba esisenzekileyo

Ukubondi kwe-thermal kubamba amaphetha we-film ngokusebenzisa isikhati nesikhala, ukunika izibondi ezifanayo—kepha kungakwazi ukuphatha okuningi kwesilinganiso esiphambili uma kusika kakhulu. Ukubondi kwe-ultrasonic kusetshenziswa kwezivibrasi zemikhala eminingi ukuthi kwenziwe isikhati esihlelile, ukuchaza ubuhle bwe-film futhi ukufumana izibondi zezindawo ezingaphezu kwe-85% yezindawo zokuphuma kwe-film yokuqala (ASTM F88). Kuma-refuse sacks ongashayelwe ngamandla, ukubondi kwe-ultrasonic kusinika izikhathi zokusebenza ezinkulu futhi ukubaluleka kakhulu ekupheleni kwezinhlelo zokusebenza ezinkulu; ukubondi kwe-thermal kusho kuyasebenza kuma-sacks awasekhulu kuphela lapho izindlela zokusebenza ziyisikhala esingaphezu kwezinye. Izindlela zombili zidinga ukubonakaliswa kahle ukuze ukungabonakali kwezindawo zokuphulukana kwezindawo zokuphuma kwezindawo zokuphuma—kepha izibondi zwe-ultrasonic zibonisa ukungabi nesiphathelo esikhulu kwezizinda zokuphuma kwezindawo zokuphuma (Packaging Science, 2023).

Ukubonakalisa Ukusebenza: Ukuphula Kokuphula Nokubaluleka Kwesikhathi Sokuzilungile Kwe-Reinforced Handle Refuse Sacks

ukuzilungile kwe-45kg kwezindawo zokusebenza kuma-refuse sacks amathathu athile asebenzisa amandla kwezindawo zokuphuma

Amathuba okusungulwa kwezindawo zasimelana nokusebenza kwesithuthi sokuphakamisa izikhumba zesithuthi sokuphakamisa ngokuphakamisa izikhumba zokugcina izikhumba ezingaphakamisa kwi-45 kg—ukuphakamisa okuphezulu kokusebenza okufanekayo. Zonke izinhlayisi zokuzimela ezintathu eziphambili zazisungulwa ngaphezu kwezinkathi ezingu-50 zokuphakamisa nokubhala ngaphandle kokugcina, ngaphandle kokugcina kwezihlangothi, ukuguqula, noma ukuphakanyiswa kwamagqabi. Ngaphandle kwalokho, izikhumba ezingasunguliwe ngokwesibonelo—ezifanayo ngokwesilingi sakwesithuthi—zazisungulwa ngokuphakamisa kwezihlangothi xa izilimi zaziphakamisa ngaphezu kwe-18–22 kg. Ukuhlaziya kwesivideo esihamba ngokukhazimula kubonisa ukuthi indlela yokusungulwa yasungula ubunzima kusendaweni yokugcina kusendaweni yesikhumba, ukuvikela ukugcina okwenziwa ngokuphakamisa kwezindawo eziyisikhombisa. Ukugcina kwezihlangothi ne-thermal welding kusungula ukugcina okuphelele kwezindawo zonke, ukuvikela ukuphakanyiswa kwamagqabi okubonakala kwezinye izikhumba ezincane. Lokhu kuhlanganisa neziqu zokuzimela kwe-ASTM D882: izihlangothi ezingasunguliwe zazisungula ngokuphelele i-62 N/mm² yokuqala yokuqala ngaphandle kokuphakamisa ngaphandle kokuphakamisa kwe-34 N/mm² yezihlangothi zokuzimela ngokwezinye—ukuphakamisa kwe-82% kwezihlangothi zokuzimela ngokuphakamisa kwezinkathi eziningi.

Ukukhuluma ngokungafanele kwezinkulu: Kungani ubude befilimu kuphela akakwazi ukunqamuka kokugcina kwezihlalo

Isibonelo esikhulu sokufanele sikhombisa ukuthi ifilimu ephakeme kwe-polyethylene yisibonelo esiphakeme sokubamba isitha. Kodwa izinkinga zokugcina ezinamandla emkhaya azigcina ngaphandle kwefilimu engekho kusukela—94% zazigcina kusukela kwenqamuka yefilimu nezihlalo, apho isitha siphindaphinda ngokushisana kwezinguquko zokuphakama okuphambili. Noma yiziphi izihlalo zokugcina ezingama-100 microns esebenzisa isikhumbuzo sesikhathi esiphakeme, zazigcina kwenqamuka yokuqondisa phambi kokuthi ifilimu ibe yilokho okuphakeme kakhulu. Izihlalo zokugcina ezinamandla zikwenzela lokhu ngokuthintela isitha ngokusebenzisa izinhlobo eziningi zokuhlanganisa futhi ngokuhlela ubude bekuvulwa—ngokwethembisa ukuthi isitha esinye siphinde ngamathathu. Idatha ye-ASTM D882 ithi ngokwesibonelo, ukuthi ubude befilimu uyahlanya nokuthi kuyasebenza ngokuthi kuyasiza ukuthi kubheke isitha ngokwesibonelo , ukukhanya kwe-sack kuzokuthandana nezinkundla zokugqibela—umthelela wokugqibela ngaphambi kokugqibela. Ngakho, isack esisikhiwe ngemitha yezinkundla ezingama-55 isinamathisela izi-45 kg zokupheka okuphambili, ngakho-ke isack esingasikhiwe ngemitha yezinkundla ezingama-80 isigqibela kuphela ngama-19 kg. Ukubaluleka kuyakuthandana nokubonding kwezihlathi—kungakuthandana kuphela nesikhala sefilm.

Imibuzo Evame Ukubuzwa

Kungani izihlathi zesack zokuhlanza zisigqibela ngemitha enkulu?

Izihlathi zisigqibela ngokuphakeme kakhulu ngokwesikhundla sokubonding phakathi kwesihlathi nesack, apho iziqu zokuguquka kwezinhlobo zisenza izindawo ezithile zokunquma kakhulu.

Ukufaka imitha ngendlela eyenziwa ngokuphambili kuyahlinzeka njani ngokulingana nokufaka imitha ngendlela eyenziwa ngokuphambili ngokuphambili ngokwesack?

Imitha yokuqhubeka, njengokwesikhundla sokugqibela nokusuka kwezindawo ezithile, kuyabusa ukugqibela kwezihlathi ngokuphambili kunezimitha ezingaphambili, nakuba umthwalo usindiza ukuphambili kwezimitha.

Izindlela ziphi zokuvuselela ukubaluleka kwezisack zokuhlanza eziphambili ngokwesikhundla sokubonding?

Ukubhalwa kwezinkambo eziningi, isimo sezinkinga, nokusebenzisa izindlela zokubambisana eziphakeme njenge-ukubambisa ngokwesithunzi esihlukene kusasa kuthuthukisa ukuphepha ngokuthinteka kwezinkinga kanye nokuthuthukisa ukuphepha kwesikhathi sokubambisana.

Liyingakanani lefilimu yepolyethylene yokuthi liyobuyela ukungafaneli kwezincoko?

Cha, ifilimu enkulu kakhulu ayikwazi ukubuyela ukungafaneli; izinkinga zonke ziyagcina ekupheleni kwencoko. Kufuneka kubambiswe ngokwesibonelo sokubambisana ngezinkambo eziningi kanye nokubambisa okuhle ukuze kube phakeme ukuphepha.