Firimu reStretch, iro rinozivikanwawo sefirimu rekutambanudza uye kupisa shrink firimu, rakatanga kugadzirwa kuChina uchishandisa PVC seyakadzika zvinhu uye DOA seplasticizer uye yekuzvinamira mhedzisiro yePVC yakatambanudzwa firimu. Nekuda kwematambudziko ezvakatipoteredza, mutengo wakakwira (unoenderana nePE, nzvimbo shoma yekurongedza payuniti) uye kusatambanuka, PE yakatambanudzwa firimu yakabviswa apo kugadzirwa kwepamba kwakatanga muna 1994-1995. Iyo yekutanga zvinhu ndeye LLDPE, inosanganisira C4, C6, C8 uye metallocene PE (MPE).
Fectures
Iyo inogadzirwa nekushandisa kunze kwenyika LLDPE resin uye tackifier yakakosha yekuwedzera proportional formula, uye inogona kugadzira multifunctional mhepo inotenderedza firimu reruoko, rekudzivirira mhando muchina, pre-stretch type muchina, anti-UV, anti-static uye anti-rust. Iine zvinotevera zvakanakira:
1. Uchishandisa midziyo ye-double-layer co-extrusion, iyo yakadzvanywa inomonereka firimu inokwanisa kukwidziridza hunhu hwepolymer yega yega, kujeka kwayo, kusimba kwesimba, uye kuramba kwekuputika, ichisvika padanho rakanyanya pakunyungudika.
2. Iine yakanaka tensile zvivakwa, zvakanaka pachena, uye yunifomu ukobvu.
3. Iine kureba kwenguva refu, kugadzikana kwakanaka, yakanaka yakachinjika kubvarura kuramba, uye yakanakisa yekuzvinamira lap.
4. Iine hushamwari hwezvakatipoteredza inogona kushandiswazve, isina kunaka, isina-chepfu, inogona kuve yakananga mupakiti chikafu.
5. inogona kugadzira zvigadzirwa zvekunamira zvine divi rimwe chete, kuderedza ruzha rwakapihwa panguva yekutenderera uye kutambanudza maitiro, kuderedza guruva nejecha mukufambisa uye kuchengetedza.
Application
1. Yakavharwa kurongedza
Rudzi urwu rwekurongedza rwakafanana nekuputira firimu, uko iyo firimu inoputirwa nepellet kuti iputire iyo yese, uye ipapo maviri ekupisa anobatisa kupisa anovhara iyo firimu pamativi ese ari maviri pamwechete. Iyi ndiyo yekutanga nzira yekuputira-yakatenderedza firimu yakashandiswa uye yakatungamira mukugadzirwa kwemamwe akawanda mafomu ekurongedza.
2. Yakazara yakafara kurongedza
Mhando iyi yekuputira inoda kuti firimu ive yakafara zvakakwana kuvhara pallet, iyo ine chimiro chenguva dzose, saka yakakodzera kushandiswa nehupamhi hwefirimu hwe17 kusvika ku35μm.
3.Manual kurongedza
Idzi rudzi rwekurongedza imhando yakapusa yekuputira firimu kurongedza, firimu rakaiswa pasherufu kana neruoko-rakabatwa nemaoko, nekutenderera kwepallet kana firimu rakatenderedza pallet. Iyo inonyanya kushandiswa mukudzoreredza kwepallet akaputirwa mushure mekuputsika, uye yakajairwa pallet kurongedza. Iyi mhando yekurongedza inononoka uye iyo yakakodzera firimu ukobvu ndeye 15 kusvika 20 μm.
