Mhedzisiro yefiber morphology pane pulp zvivakwa uye mhando

Muindasitiri yemapepa, fiber morphology chimwe chezvinhu zvakakosha zvinotaridza pulp zvivakwa uye yekupedzisira bepa mhando. Fiber morphology inopindirana neavhareji kureba kwefibers, chiyero chefiber cell wall ukobvu kune sero dhayamita (inonzi madziro-to-cavity ratio), uye huwandu hweasiri-fibrous heterocytes uye fiber bundles mu pulp. Izvi zvinhu zvinopindirana, uye pamwe chete zvinokanganisa kusimba kwechisungo chepulp, kupera simba kwemvura, kuita kwekukopa, pamwe nekusimba, kusimba uye huwandu hwese bepa.

1) Avhareji urefu hwefiber
Hurefu hwehurefu hwemafibhi ndeimwe yezviratidzo zvakakosha zvemhando yepulp. Mafiibha akareba anoumba macheni akareba etiweki mumapepa, ayo anobatsira kuwedzera kusimba kwechisungo uye zvimiro zvepepa. Kana huwandu hwehurefu hwemafibhi hunowedzera, nhamba yezvikamu zvakabatanidzwa pakati pemafiber inowedzera, zvichiita kuti pepa riparadzire zviri nani kushungurudzika kana richiiswa kune simba rekunze, nokudaro kuvandudza simba uye kuoma kwepepa. Naizvozvo, kushandiswa kwehurefu hwehurefu hwehurefu hwakareba, senge spruce coniferous pulp kana donje nerineni pulp, inogona kuburitsa yakakwira simba, kuoma kuri nani kwepepa, mapepa aya akanyanya kukodzera kushandiswa mukudiwa kwepamusoro hunhu hwechiitiko. senge zvinhu zvekurongedza, bepa rekudhinda uye zvichingodaro.
2) Huyero hwefiber cell wall ukobvu kune cell cavity dhayamita (madziro-ku-cavity ratio)
The wall-to-cavity ratio ndechimwe chinhu chakakosha chinokanganisa pulp properties. Lower wall-to-cavity ratio inoreva kuti fiber cell wall inenge yakatetepa uye sero mhango yakakura, kuitira kuti mafibers ari mupulping uye papermaking process ari nyore kutora mvura nekupfava, anobatsira pakunatswa kwefibers, dispersion. uye kupindirana. Panguva imwecheteyo, tambo dzakatetepa-madziro dzinopa zvirinani kuchinjika uye kupeta kana uchigadzira bepa, zvichiita kuti bepa rive rakakodzera kune yakaoma kugadzirisa uye kugadzira maitiro. Kusiyana neizvi, mafiber ane high wall-to-cavity ratios anogona kutungamirira kune yakanyanyisa kuoma, brittle bepa, izvo zvisingakwanisi kugadzirisa uye kushandiswa kunotevera.
3) Zviri mukati me-non-fibrous heterocytes uye fiber bundles
Masero asina-fibrous uye mabundles efiber mupulp zvinhu zvisina kunaka zvinokanganisa kunaka kwepepa. Izvi zvinosvibisa hazvizongodzikisi kuchena uye kufanana kwehuputi, asiwo mukugadzira mapepa kuumba mafundo uye kukanganisa, kunokanganisa kutsetseka uye simba repepa. Non-fibrous heterocytes inogona kubva kune zvisiri-fibrous components zvakadai sebark, resin uye gums mune zvakasvibiswa, nepo fiber bundles mafiber aggregates akaumbwa semugumisiro wekukundikana kwezvinhu zvakasvibiswa kuti zviparadzanise zvakakwana panguva yekugadzirira. Nokudaro, tsvina iyi inofanira kubviswa zvakanyanya sezvinobvira panguva yekufambisa puropa kuti ivandudze pulp quality uye bepa regoho.