STRETCH FILM

Firimu reStretch, iro rinodaidzwawo kuti firimu rekutambanudza uye kupisa kunopisa firimu, ndiyo yekutanga yepamba PVC yakatambanudzwa firimu kuti igadzirwe nePVC sechinhu chekutanga uye DOA sepurasitiki uye inonamira yega.Nekuda kwenyaya dzekuchengetedzwa kwezvakatipoteredza, kudhura kwakanyanya (zvinei nePE's high proportion, less unit packaging area), kusatambanuka zvakanaka, nezvimwewo, zvakabviswa zvishoma nezvishoma apo kugadzirwa kwepamba kwePE stretch film kwakatangwa kubva 1994 kusvika 1995. The PE stretch film. yakatanga kushandisa EVA seyakazvinamira zvinhu, asi mutengo wayo wakakwira uye waive nekuravira.Gare gare, PIB neVLDPE zvakashandiswa sezvinamira zvega, uye hwaro hwezvinhu hwainyanya LLDPE, kusanganisira C4, C6, C8 uye metallocene PE (MPE).

Shandisa fomu:

1. Yakavharwa kurongedza

Rudzi urwu rwekurongedza rwakafanana ne shrink firimu kurongedza.Iyo firimu inoputira tireyi ichitenderedza tireyi, uye ipapo maviri anopisa anobatisa kupisa anovhara iyo firimu kumigumo yese.Iyi ndiyo yekutanga kushandisa fomu rekutamba firimu, uye mamwe mafomu ekurongedza akagadzirwa kubva pane izvi

2. Yakazara yakafara kurongedza

Rudzi urwu rwekuputira runoda kuti firimu rive rakakura zvakakwana kuti rivhare pallet, uye chimiro chepallet chinogara chiripo, saka chine chayo, chakakodzera firimu ukobvu hwe17～35μm.

3. Manual kurongedza

Iri rudzi rwekurongedza ndiyo yakapusa mhando yekutambanudza firimu kurongedza.Iyo firimu inosungirirwa pane rack kana ruoko-yakabatwa, inotenderedzwa netireyi kana firimu inotenderera patireyi.Iyo inonyanya kushandiswa kurongedza zvakare mushure mekuputirwa pallet yakuvadzwa, uye yakajairwa pallet kurongedza.Rudzi urwu rwekurongedza kumhanya kunononoka, uye yakakodzera firimu ukobvu ndeye 15-20μm;

4. Tambanudza firimu kuputira muchina kurongedza

Iyi ndiyo yakajairika uye yakawandisa fomu yekurongedza mechanical.Iyo tireyi inotenderera kana firimu rinotenderera rakatenderedza tireyi.Iyo firimu inogadziriswa pabhuraketi uye inogona kufamba ichikwira nekudzika.Iri rudzi rwekurongedza huwandu hwakakura kwazvo, dzinenge 15-18 matireyi paawa.Ukobvu hwefirimu hwakakodzera hunosvika 15～25μm;

5. Horizontal mechanical packaging

Yakasiyana kubva kune mamwe mapeji, iyo firimu inotenderedzwa nechinyorwa, icho chakakodzera kureba zvinhu kurongedza, senge makapeti, mapuranga, fiberboards, yakakosha-yakaumbwa zvinhu, nezvimwewo;

6. Packaging yepepa tubes

Iyi ndeimwe yeazvino kushandiswa kweakatambanudzwa firimu, iri nani pane yekare-yechinyakare bepa tube packaging.Iyo yakakodzera firimu ukobvu i30～120μm;

7. Kurongedza zvinhu zviduku

Iyi ndiyo yazvino kurongedza fomu yeyakatambanudzwa firimu, iyo isingagone chete kuderedza kushandiswa kwezvinhu, asi zvakare kuderedza nzvimbo yekuchengetedza yema pallets.Munyika dzekunze, rudzi urwu rwekuputira rwakatanga kuiswa muna 1984. Gore rimwe chete gare gare, zvakawanda zvekuputira zvakadaro zvakaonekwa pamusika.Iyi fomu yekurongedza ine mukana mukuru.Inokodzera firimu ukobvu hwe15～30μm;

8. Packaging yemachubhu netambo

Uyu muenzaniso wekushandiswa kwefirimu yakatambanudzwa mundima yakakosha.Midziyo yekurongedza inoiswa pakupera kwemutsara wekugadzira.Iyo yakazara otomatiki yakatambanudzwa firimu haingogone kutsiva tepi kuti isunge zvinhu, asi zvakare kutamba basa rekudzivirira.Ukobvu hunoshanda ndeye 15-30μm.

9. Kutambanudza fomu ye pallet mechanism packaging

Iko kurongedza kwefirimu yakatambanudzwa kunofanirwa kutambanudzwa, uye mafomu ekutambanudza epallet mechanical packaging anosanganisira kutambanudza kwakananga uye pre-kutambanudza.Kune mhando mbiri dzepre-stretching, imwe iri roll pre-stretching uye imwe ndeyemagetsi kutambanudza.