High -Kev ua haujlwm ceev capping ua rau muaj kev ntxhov siab loj heev thiab thermal stresses ntawm cov yas kaw, ua rau cov khoom qaug zog thiab ib puag ncig kev ntxhov siab tawg (ESC) kev txhawj xeeb tseem ceeb rau cov kws tsim khoom ntim khoom. Niaj hnub nimno rotary capping tshuab ua haujlwm ntawm blistering speeds, feem ntau tshaj kaum tawm txhiab units ib teev. Thaum lub sij hawm lub voj voog ceev no, lub kaus mom yuav raug rov ua dua tshiab raws li lawv tau khaws, sib dhos, threaded, thiab torqued. Tshaj li ntau lab lub voj voog, cov ntaub ntawv polypropylene (PP) lossis polyethylene (PE) cov ntaub ntawv siv rau hauv cov kaw no tuaj yeem ntsib kev puas tsuaj ntawm cov txheej txheem microscopic, thaum kawg ua rau muaj kev puas tsuaj loj xws li tawg tamper- pom cov qhab nia lossis faib cov phab ntsa.
Environmental stress cracking yog kab tias feem ntau insidious daim ntawv ntawm cov khoom qaug zog hauv cov ntsiab lus no. ESC tshwm sim thaum ib feem ntawm cov yas raug rau qhov tensile stress nyob rau hauv lub xub ntiag ntawm tej yam tshuaj. Hauv kev siv dej haus, cov pwm tso tawm cov khoom seem, cov roj nplua nyeem los ntawm lub tshuab xa khoom, lossis txawm tias cov lej ntawm cov khoom nws tus kheej (xws li cov roj citrus lossis cawv) tuaj yeem ua raws li kev ntxhov siab - cov khoom tawg. Thaum cov tshuaj no cuam tshuam nrog cov cheeb tsam amorphous ntawm lub polymer nyob rau hauv load, lawv ua rau kom cov micro-fissures. Txhawm rau txo qhov no, cov kws tshawb fawb cov khoom siv ua tib zoo xaiv cov copolymer resins nrog cov ntsuas kub ntau dua thiab suav nrog cov khoom siv tshwj xeeb uas txhim kho cov tshuaj tiv thaiv yam tsis muaj kev txi qhov tsim nyog rau kev sib khi.
Lub geometry ntawm lub hau tseem ua lub luag haujlwm tseem ceeb hauv nws txoj kev tiv thaiv kev qaug zog. Cov kaum ntse ntse, kev hloov pauv sai sai hauv cov phab ntsa tuab, thiab cov xov sib sib zog nqus cov hauv paus hniav ua raws li cov kev ntxhov siab uas cov kab nrib pleb yuav pib. Txhaj tshuaj molding tsis, xws li packing siab thiab txias npaum li cas, ntxiv dictate cov residual stresses xauv rau hauv ib feem. Cov cuab yeej simulation qib siab tso cai rau cov kws ua choj los kwv yees cov ntsiab lus tsis muaj zog ua ntej cov cuab yeej raug txiav. Qib no ntawm precision yog qhov tseem ceeb tshwj xeeb rau kev ua haujlwm tshwj xeeb kaw. Cov khoom lag luam siv cov thev naus laus zis thev naus laus zis, xws li cov tsim los ntawmHelicap, cia siab rau cov txheej txheem pob khawm yooj yim thiab hloov tau yooj yim spouts uas tau rov hais dua. Ua kom cov yam ntxwv nyuaj no tiv taus kev qaug zog dhau ntawm cov khoom lag luam tag nrho lub neej yuav tsum muaj kev sib npaug ntawm kev xaiv cov resin, geometric optimization, thiab nruj nrawm lub neej- kev ntsuas lub voj voog kom lav qhov kev ua tau zoo ntawm qhov siab - kab nrawm.
