Chifukwa chiyani matumba a PVC amagwiritsidwa ntchito kwambiri?

Chifukwa chachikulu chomwe PVC ili ndi zabwino ziwirizi ndikupangira kwake.Kupanga matumba a PVC sikovuta.Mzere wopanga nthawi zambiri umapangidwa ndi makina osindikizira, makina osindikizira, makina okutira kumbuyo ndi makina odulira.Filimu yopyapyala imadyedwa palimodzi ndipo chitsanzocho chimasindikizidwa kutsogolo kwa filimuyo ndi makina osindikizira, ndipo chophimba chakumbuyo chakumbuyo chimamangiriridwa ku kusagwirizana kwa filimuyo ndi chophimba chakumbuyo.
Chophimba chakumbuyo ichi chikuwoneka ngati chaching'ono kwambiri, koma ndichofunikira kwambiri komanso chofunikira kwambiri.Ndilo chitsimikizo chofunikira pa ntchito ya thumba la PVC.

Chophimba chakumbuyo chimapangidwa ndi zipangizo zapadera ndipo ndi mtundu wa mphamvu yowonjezera mphamvu.Ndi ndendende chifukwa cha chophimba chakumbuyo ichi kuti filimu ya PVC ikhoza kuphatikizidwa mwamphamvu ndi MDF kapena matabwa ena, ndipo ali ndi luso loumirira kuti asatsegule kwa nthawi yaitali.Vuto la chigoba chambiri ndikuti silingathe kuthana ndi vuto lakuuma la filimuyo.

Chikwama cholongedza cha PVC chimapangidwa ndi zida za PVC zozizira, zomwe ndi zokongola komanso zolimba, zosavuta kugwiritsa ntchito, zofewa kukhudza, komanso zotsika mtengo.Zimapangidwa ndi PVC yowonekera kwambiri, zida zapadera zotsutsana ndi static, thumba silimamatira, losavuta kugwiritsa ntchito, luso labwino, lopanda ngodya Maburrs samapweteka manja anu, zipper zimagwiritsidwa ntchito bwino komanso zimakhala ndi moyo wautali, ndipo kusindikiza kumakanikizidwa mwamphamvu komanso sikuduka mosavuta.Ndi zosankha zotsatsira zamitundu yonse ya zovala zamkati, masokosi, zikalata, zodzoladzola, katundu wapakhomo, nsalu zapakhomo ndi zina zotero.

Chakudyacho chimakhala ndi mtundu wake, kakomedwe kake, kadyedwe, kaonekedwe, kulemera kwake, ndiponso ukhondo wa chakudyacho.Pafupifupi zakudya zonse zokonzedwa bwino ziyenera kupakidwa zisanayambe kugulitsidwa ngati katundu.Ngakhale chakudya ndi chinthu chomwe mtundu wake ukhoza kuwonongeka chifukwa cha chilengedwe, chakudya chilichonse chopakidwa chimayenera kukhala ndi index yofananira ya matumba oyikamo chakudya mkati mwa alumali.

Ulalo wonse wa kufalikira kwa chakudya kuchokera pakupanga zinthu mpaka kudyedwa ndizovuta komanso zosinthika.Zidzakhudzidwa ndi tizilombo toyambitsa matenda komanso tizilombo toyambitsa matenda, komanso zinthu zosiyanasiyana zachilengedwe monga kuwala, mpweya, chinyezi, kutentha, ndi tizilombo toyambitsa matenda timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timatulutsa timadzi timene timapanga timadzi tambirimbiri tambirimbiri.Zotsatira.

Zotsatira za kuwala pa khalidwe la chakudya

(1) Kuwonongeka kwa kuwala kwa chakudya

Kuwala kumakhudza kwambiri ubwino wa chakudya.Ikhoza kuyambitsa ndi kufulumizitsa kuwonongeka kwa zakudya m'zakudya, ndipo kuwonongeka kwa chakudya kumachitika.Iwo makamaka kuwonetseredwa mu mbali zinayi: kulimbikitsa makutidwe ndi okosijeni anachita mafuta chakudya ndi chifukwa okosijeni rancidity;kupanga chakudya Ma inki omwe ali m'gululi amasinthidwa ndikusintha mtundu;kupanga zobiriwira, zachikasu, zofiira mu zakudya za zomera ndi zofiira mu zakudya za nyama mdima kapena zofiirira;kuyambitsa kuwonongedwa kwa mavitamini osamva kuwala monga mavitamini a B ndi mavitamini, ndikuphatikiza ndi zinthu zina Kusintha kwa mankhwala osafunika kumachitika;kumayambitsa kusokonezeka kwa mapuloteni ndi amino acid mu chakudya.

(2) Lamulo la kuwala kolowa m’chakudya

Kuwala kumatha kulimbikitsa mkati mwa chakudya-zosintha zingapo zimachitika chifukwa cha mphamvu zake zambiri.Pansi pa kuwala, zigawo zomwe zimakhudzidwa ndi kuwala m'zakudya zimatha kuyamwa mwamsanga ndikusintha mphamvu ya kuwala, motero kumapangitsa kuti thupi likhale ndi mankhwala omwe amapezeka mkati mwa chakudya.Pamene chakudyacho chimatenga mphamvu ya kuwala ndi kusuntha kwakuya, chakudyacho chidzawonongeka mofulumira komanso mozama kwambiri.Kuchuluka kwa mphamvu ya kuwala komwe kumatengedwa ndi chakudya kumawonetsedwa ndi kachulukidwe ka kuwala.Kukwera kwa kachulukidwe ka kuwala, mphamvu yowunikira imakulirakulira, komanso mphamvu yakuwonongeka kwa chakudya.