Mazuva ano zvakaoma kutenda mune izvi, asi munguva pfupi yapfuura, mabhegi epurasitiki ave akakosha zvikuru uye kunyange kushaiwa, uye kwete imwe yemhando yehutakiti yakachengetwa. Nemafaro dzimwe nguva dzakashanduka kuti dzive nani uye munenge kese kikiki yose unogona kuwana rugwaro rwekudya polyethylene kana polyvinyl chloride film. Vanyengeri vanokoshesa zvose zvakanaka zvezvinhu izvi uye vashandise nehukuru hwekuchengetedza michina, kutakura mapepa akasiyana-siyana nekubika kubika. Uye iyo yose inofadza nezvefirimu yezvokudya iwe unogona kudzidza kubva munyaya yedu.
Firimu yezvigadzirwa zvekudya
Kutanga, ngationei heroine yemashoko edu pedyo. Firimu yekudya inogona kuva polyethylene kana polyvinyl chloride (PVC). Uye kunyange zvazvo zvakaoma kuti munhu akazvimiririra azviparadzanise kubva kune umwe pakutanga pakuona, pane zvimwe zvakasiyana mumamiriro avo. Iyo huru iyo inenge yakakwana yegesi uye kushorwa kwemvura yepa polyethylene film mukusiyana ne "kufema" kwayo yePVC. Panyaya iyi, firimu yakaitwa yezvikamu zvishoma zviduku zve polyethylene inogona kushandiswa chete nokuda kwekudya kunotonhorera, somuenzaniso, yekutakura zvimedu , miriwo, michero, chingwa. Mishonga iri pasi pechiganda chakadaro haichazobudiswi nemigumisiro inokuvadza yezvakatipoteredza uye ichachengetedza zvizere zvayo muupenyu hwose hwechigadzirwa. Kuedza kutakura chimwe chinhu mufirimu yekuputira epurasitiki kunopera mu fiasco yakakwana: iyo inongoramba ichirasikirwa uye inorasikirwa nemadziviriro ayo. Haisi iyo nzira yakanakisisa, polyethylene inopindira kudonha kwenguva refu yehushisa- mufiriji ichakurumidza kuva nemakore uye inenge ichinyorova. Asi iyo PVC-firimu inonyatsoshanda nemishonga inopisa uye yakawanda yezvokudya, uye ndiro iri pasi payo haizorasikirwi nekukwevera kwayo uye haichazogoni. Mukuwedzera, zvinenge zvisingabatsiri mafuta uye acid, izvo zvinoita kuti zvive sarudzo yakanakisisa yekugadzira zvitsva zvakagadzirwa zvakagadzirwa. Uyezve, kukwanisa kumira zvakakwana kutonhora kunokonzera kushandiswa kwemafirimu akadaro kunyange mukivhisi yewa microwave, somuenzaniso, kuti udzokezve zvikafu usingabvisi mapuranga. Uyezve, mafirimu akasiyana-siyana ane zvizhinji zvakafanana - zvose zvezvinhu izvi zvinokwanisa kutambanudza kaviri katatu urefu hwayo hwepakutanga uye zvakanamatira zvachose kumativi ose. Zvose izvi zvinokubvumira kuti uende pakarepo utengese zvigadzirwa zvemhando ipi neipi nekukura, usingashandisi zvikamu zvechitatu zvekare uye mazhenje. Uye iyo inogona kuitwa zvose pamwe nekubatsirwa kwemichina yakakosha, uye nekufambisa rugwaro rwefirimu nemaoko.
Shrink firimu yekudya
Nzvimbo inokosha pakati pezvokudya zvepurasitiki zvinopera firimu. Chiratidzo chaicho chinokwanisa kukwanisa kubvumirana nekutungamirirwa nekupisa uye kutora mamiriro echinhu chakakonzerwa. Akawana shanduro yakakura kupfuura dzose mumamiriro ekutengeserana, uko zvakasiyana-siyana zvekudya zvinotakurwa mufirimu yakadaro. Muchiitiko ichi, iyo firimu inoramba iine pachena, uye naizvozvo mutengi ane mukana kune vose
Kuwanda kwefirimu yezvokudya
Purogiramu yakadyiwa yepa polyethylene inowanika muhupamhi hwe 6, 7.5 kana 8 microns. NePVC firimu yekudya, iyi parameter inogona kuva 8, 9, 10, 12 kana 14 microns. Paunosarudza kuwanda, iwe unofanirwa kuisa pfungwa pamhando yezvigadzirwa zvichange zvakaiswa. Saka, nokuda kwekutakura majikiro, michero, mushroom nemiriwo, pePVC yefirimu ine masikironi 9 emironi inodiwa. Uye nokuda kwekudya, hove uye semi-finished-products, unofanira kutora firimu nehupamhi hwe12-14 microns.