Munhu wose anofanira kunge akajairana nepepa.Nekuti isu tinogona kuona ese marudzi ezvigadzirwa zvemapepa mune akawanda mapikicha muhupenyu hwezuva nezuva.Somuenzaniso, tinoziva makapu emapepa, ndiro dzemapepa, ndiro dzemapepa uye mabhokisi ezvokudya zvinokurumidza.Isu tese tinoziva kuti bepa ndeye hygroscopic (inotora nyore kunyorova) uye ine yakaderera kuputika simba.Asi kana iwe ukachenjerera, uchaona kuti mapepa aya ane yakajeka, inopenya, yakatsetseka yekubata firimu mukati.Iyo ifirimu yePE, iyo inoratidzika kuisa jasi remashiripiti papepa, ichipa simba guru rekusatya mvura nemafuta.Ngatiburitse chakavanzika chepepa rakaputirwa pamwechete!
Zviri mukati
1. Chii chinonzi PE?
2. Kurongwa kwePE.
3. Kugoverwa kwePE kugadzirwa kwesimba nenyika.
4. Chii chinonzi PE coated paper?Inoshandiswa nei?
5, Kurongeka kwePE yakavharwa bepa.
6. Kushandiswa kwePE yakavharwa bepa.
Chii chinonzi PE?
Tisati tanzwisisa PE yakavharwa bepa, ngatitaure nezve yayo huru mbishi zvinhu - polyethylene.Polyethylene ipfupi kune PE, iri thermoplastic resin polymerized kubva ethylene.Kutaridzika kwepolyethylene iine mukaka chena waxy particles, isinganakidze, isinganhuhwi, isina chepfu uye inonzwa kunge wakisi.Chinhu chikuru che polyethylene yakachipa, ine yakanakisa kutonhora kupikisa, kugadzikana kwemakemikari, kuvharwa kwemagetsi uye mamwe maitiro.Saka ine zvakawanda zvakasiyana-siyana zvekushandisa.Inonyanya kushandiswa mukugadzirwa kwemafirimu, kurongedza zvinhu, midziyo, mapaipi, waya netambo, zvinodiwa zvezuva nezuva, nezvimwewo. Uyezve, inogona kushandiswa seyakakwirira-frequency insulating zvinhu zveterevhizheni, radars, etc. Kubva kushandiswa kwayo muna 1922. polyethylene yakagadzirika kuita resin yakakura kwazvo pasi rose uye kushandiswa kukuru kwepurasitiki yekurongedza zvinhu.Iyo inotora chinzvimbo chakakosha muindasitiri yepurasitiki.
Kurongwa kwePE
Nekuda kweakasiyana mapolymerization maitiro e polyethylene, chimiro chayo zvakare chakasiyana, uye inoenderana zvigadzirwa zvechigadzirwa zvakare zvakasiyana kwazvo.Zvikuru zvinogona kukamurwa kuva: Low-Density Polyethylene (LDPE), Linear Low Density Polyethylene(LLDPE), High-Density Polyethylene(HDPE).
LDPE: Inonyanya kushandiswa kugadzira mapepa, firimu rekurima, firimu rekurongedza maindasitiri, waya, nezvimwe;
LLDPE: Inonyanya kushandiswa kune waya uye tambo, pombi, zvinodiwa zvezuva nezuva, nezvimwe;
HDPE: Inonyanya kushandiswa kune ligatures, tambo, mambure ekuredza, nezvimwe.
Kugoverwa kwesimba rekugadzira PE nenyika
Kubva muna Kubvumbi 2022, huwandu hwekugadzira PE hweChina hwasvika matani 29.18 miriyoni, zvichitora 21% yehuwandu hwepasi rose hwekugadzira PE.Iyo inogona kuoneka kubva kune iyo data kuti iyo yepasi rose PE yekugadzira huwandu hwakanyanya kunangana muChina, United States neSaudi Arabia.China parizvino ndiyo nyika ine hukuru hukuru hwekugadzira polyethylene pasi rose.
Chii chinonzi PE yakavharwa bepa?
Isu takatove nekunzwisisa kwakadzama kwePE pamusoro, saka chii chinonzi PE chakavharwa bepa?Zvichitaurwa zviri nyore, PE yakavharwa bepa chinhu chakaumbwa chakagadzirwa nebepa sechinhu chigadziko uye chakaputirwa nejira repolyethylene firimu pabepa repasi, ndiko kuti, mapurasitiki akaputirwa pamusoro pebepa nemuchina wekukanda.Pepa iri nyore kunyorova, asi mushure mekunyatsobatanidzwa ne polyethylene, pepa rakaputirwa rinogona kuwana mhedzisiro yekusapinda kwemvura, mafuta-uchapupu uye yakakwirira-tembiricha kuramba.
Kurongeka kwePE yakavharwa bepa
Zvinoenderana nemusiyano uripo pakati pehuwandu hwefirimu yakavharwa, inogona kupatsanurwa kuita rimwe-sided PE rakavharwa bepa, kaviri-mativi PEcoated bepa, uye interlayer PE yakavharwa bepa.
1. Single-sided PE yakavharwa bepa
Single-sided PEcoated bepa rakaputirwa nePE firimu kune rimwe divi rebepa rekutanga.Inoshandiswa mumakapu ekunwa anopisa emapepa, hamburger bepa, nezvimwe.
2. Pepa rakapetwa kaviri PE rakavharwa
Pepa rakapetwa kaviri PE rakavharidzirwa PE rakaputirwa mativi ese ebheji rekutanga.Inoshandiswa mukutonhora kunwa mapepa makapu.
Interlayer yakavharwa bepa
Sandwich yakavharwa bepa ndeyekuisa PE yekupotera pakati pemapepa maviri egasi kuti agadzire bepa rimwe chete kuti riwedzere kuchinjika kwebepa.
Inowanzo shandiswa mu: desiccant kurongedza, chikafu mabhegi ekurongedza, nezvimwe.
Zvinoenderana nekupfeka kwakasiyana, inogona kukamurwa kuva marudzi maviri: yakajeka firimu uye sub-firimu.
Firimu rakajeka ifirimu rakajeka-mativi maviri re polyethylene rine nzvimbo inopenya uye ruoko rwakatsetseka.Iyo matte firimu ndeye matte polyethylene firimu ine matte firimu ine fogged surface.
Iyo sequins ine tsananguro yakakwirira uye iyo yakadhindwa nyaya yakawedzera mavara.Mafirimu eMatte anonyanya kunyarara muruvara.
Kushandiswa kwepepa rakaputirwa
Pepa rakavharwa rine hukama nehupenyu hwedu hwezuva nezuva uye rine huwandu hwakasiyana hwekushandisa, hunonyanya kushandiswa mukurongedza, chikafu, zvekurapa, zvemagetsi, hardware, kufa kucheka, nezvimwe.
Chiyero chekushandiswa kwepepa rakavharwa:
Kuwanda kwekushandiswa kwepepa rakavharwa
1. Mishonga: desiccant packaging, mothballs, washing powder, preservatives.
2. Zvokudya: zviputi zvenoodle, ice cream packaging, mukaka.
Nguva yekutumira: Nov-16-2022
