Kodi mukudziwa chidziwitso cha matumba oyika zakudya omwe amagwiritsidwa ntchito kwambiri?

Pali mitundu yambiri ya matumba onyamula zakudya omwe amagwiritsidwa ntchito ponyamula zakudya, ndipo ali ndi machitidwe awoawo komanso mawonekedwe awo. Lero tikambirana zina zomwe zimagwiritsidwa ntchito nthawi zambiri pathumba lazakudya zomwe zingakuthandizeni. Ndiye chikwama cholongedza chakudya ndi chiyani? Matumba oyika zakudya nthawi zambiri amatanthawuza mapulasitiki a mapepala okhala ndi makulidwe osakwana 0.25mm ngati mafilimu, ndipo zotengera zosinthika zopangidwa ndi makanema apulasitiki zimagwiritsidwa ntchito kwambiri m'makampani azakudya. Pali mitundu yosiyanasiyana ya matumba onyamula zakudya. Zimakhala zowonekera, zosinthika, zimakhala ndi madzi abwino, kukana chinyezi ndi zotchinga mpweya, mphamvu zamakina zabwino, katundu wokhazikika wamankhwala, kukana mafuta, zosavuta kusindikiza bwino, ndipo zimatha kusindikizidwa kutentha kupanga matumba. Kuphatikiza apo, zotengera zomwe zimagwiritsidwa ntchito kwambiri pazakudya nthawi zambiri zimakhala ndi magawo awiri kapena kupitilira apo amafilimu osiyanasiyana, omwe amatha kugawidwa kukhala wosanjikiza wakunja, wosanjikiza wapakati ndi wamkati molingana ndi malo.

Kodi ndi zotani zomwe zimafunikira pakuseweredwa kwa gulu lililonse la makanema onyamula zakudya omwe amagwiritsidwa ntchito kwambiri? Choyamba, filimu yakunja nthawi zambiri imakhala yosindikiza, yosayamba kukanda, komanso yosagwira pakati. Zida zomwe zimagwiritsidwa ntchito nthawi zambiri ndi OPA, PET, OPP, filimu yophimbidwa, ndi zina. Kanema wosanjikiza wapakati nthawi zambiri amakhala ndi ntchito monga chotchinga, shading, ndi chitetezo chathupi. Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo BOPA, PVDC, EVOH, PVA, PEN, MXD6, VMPET, AL, etc. Ndiye pali filimu yosanjikiza yamkati, yomwe nthawi zambiri imakhala ndi ntchito zotchinga, kusindikiza, ndi anti-media. Zomwe zimagwiritsidwa ntchito nthawi zambiri ndi CPP, PE, etc. Kuphatikiza apo, zida zina zimakhala ndi ntchito yolumikizana yakunja ndi yapakati. Mwachitsanzo, BOPA angagwiritsidwe ntchito ngati wosanjikiza akunja ndi wosanjikiza wamkati, ndipo angagwiritsidwenso ntchito ngati wosanjikiza pakati kusewera chotchinga china ndi chitetezo thupi.

Zomwe zimagwiritsidwa ntchito nthawi zambiri zimakhala ndi mawonekedwe a filimu osinthika, nthawi zambiri, zinthu zakunja ziyenera kukhala ndi kukana kukana, kukana kuphulika, kukana kwa UV, kukana kuwala, kukana kwamafuta, kukana kwachilengedwe, kukana kuzizira, kukana kupsinjika, kusindikiza, kutentha, fungo lotsika, lotsika. Mndandanda wa katundu monga fungo, osati poizoni, kuwala, kuwonekera, shading, etc.; zinthu zosanjikiza zapakatikati nthawi zambiri zimakhala ndi kukana, kukana kukanikiza, kukana kuphulika, kukana chinyezi, kukana mpweya, kusungitsa kununkhira, kukana kuwala, kukana mafuta, kukana kwa organic, kukana kutentha komanso kuzizira. , kukana kupsinjika kwapang'onopang'ono, mphamvu zophatikizika za mbali ziwiri, fungo lochepa, fungo lochepa, lopanda poizoni, lowonekera, lopanda kuwala ndi zina; ndiye zamkati wosanjikiza zakuthupi, kuwonjezera katundu wamba ndi wosanjikiza wakunja ndi wosanjikiza pakati, alinso ndi katundu wake wapadera, ayenera kukhala onunkhira posungira, otsika adsorption ndi impermeability. Kukula kwaposachedwa kwa matumba olongedza chakudya ndi motere: 1. Matumba oyikamo chakudya opangidwa ndi zinthu zoteteza chilengedwe. 2. Pofuna kuchepetsa ndalama komanso kusunga chuma, matumba olongedza chakudya akupita patsogolo. 3. Zakudya ma CD matumba akupanga kwa magwiridwe antchito apadera. Zida zophatikizika kwambiri zotchinga zipitiliza kukulitsa msika. Mafilimu otchinga kwambiri omwe ali ndi ubwino wa kukonza kosavuta, mpweya wamphamvu ndi mpweya wotchinga madzi, komanso moyo wabwino wa alumali udzakhala waukulu kwambiri pamasitolo ogulitsa zakudya zosinthika m'tsogolomu.