Thekuboola kozungulirandi omwe amagwiritsidwa ntchito kwambiri popanga mapaipi achitsulo osasunthika, ndipo adapangidwa ndi abale a ku Germany a Mannesmann mu 1883. Makina oboola opingasa amaphatikizapo makina oboola mipukutu iwiri ndi makina atatu oboola opingasa.Zowonongeka zamtundu wa capillary zomwe zimapangidwa ndi kupindika ndi kuboola machubu opanda kanthu makamaka kumaphatikiza mkati, khola lakunja, makulidwe a khoma losafanana ndi zokopa za capillary.

Capillary infolding: Capillary ndiye chilema chomwe chimatha kuchitika pakuboola mozungulira, ndipo chimagwirizana kwambiri ndi kuboola kwa chubu chopanda kanthu, kusintha kwa magawo a kuboola kwa makina oboola, komanso mtundu wa kuboola. pulagi.Zinthu zomwe zimakhudza capillary infolding: imodzi ndi kuchepetsa (mulingo) ndi nthawi yopondereza pulagi isanakwane;chinacho ndi mawonekedwe a dzenje;chachitatu ndi pamwamba khalidwe la pulagi.
Kupindika kunja kwa chubu cha capillary: Kupindika kwakukulu kwa chubu cha capillary kumabwera chifukwa cha kuwonongeka kwa pamwamba kwa chubu chopanda kanthu, chomwe ndi vuto lina lapamwamba lomwe limayamba mosavuta pamene chubu chopanda kanthu chikakulungidwa ndi kuboola.Zomwe zimakhudza kupindika kwa capillary kunja: A. chubu chopanda kanthu pulasitiki ndi mapindikidwe a perforation;B. chubu opanda kanthu pamwamba zolakwika;C. perforation chida khalidwe ndi chiphaso mawonekedwe.

Makulidwe a khoma la capillary: Pali makulidwe a khoma lopingasa komanso makulidwe a khoma lakutali.Mukagubuduza ndi kuboola, makulidwe a khoma lopingasa mosafanana amatha kuchitika.Zinthu zazikulu zomwe zimakhudza makulidwe a khoma la capillary chubu ndi: kutentha kwa chubu chopanda kanthu, kumapeto kwa chubu, kusintha kwa bowo la makina oboola ndi mawonekedwe a chida, etc.

Zing'onoting'ono za Capillary: Ngakhale zofunikira pamtundu wa mapaipi opangidwa ndi capillary sizovuta kwambiri ngati mphero zogudubuza zitoliro ndi mphero zokulirapo zamtundu wachitsulo chapaipi, kukwapula kwakukulu kwa mapaipi a capillary kudzakhudzanso mtundu wapaipi yachitsulo.Zinthu zomwe zimakhudza abrasion pamwamba pa chubu capillary: makamaka chifukwa pamwamba pa perforating chida kapena kuchoka tebulo wodzigudubuza ya makina kuboola kwambiri amavala, akhakula kapena wodzigudubuza tebulo si atembenuza.Pofuna kuteteza pamwamba pa capillary kuti zisasokonezedwe ndi zolakwika za pamwamba pa chida cha perforating, kuyang'anitsitsa ndi kugaya kwa chida cha perforating (silinda yotsogolera ndi mbiya) iyenera kulimbikitsidwa.