Vatengi vazhinji kuburikidza newebhusaiti yedu vanopa mazano parunhare nezvekufarirwa kwemhando dzemabhegi akarukwa, saka nhasi DongLai woven bag Xiaobian kuti vatsanangure kufarirwa kwemhando dzemabhegi akarukwa.
Mhando dzemabhegi akarukwa
Mabhegi akarukwa anonziwo mabhegi eganda renyoka. Imhando yepurasitiki, inonyanya kushandiswa pakurongedza. Zvishandiso zvacho zvinowanzova polyethylene, polypropylene nezvimwe zvinhu zvepurasitiki zvine makemikari. Heino sumo pfupi yerudzi rwebhegi rakarukwa uye mashandisirwo aro.
Polyethylene ndiyo inonyanya kushandiswa mukugadzirwa kwekunze kwenyika, polypropylene ndiyo inonyanya kushandiswa mukugadzirwa kwemumba. I thermoplastic resin inogadzirwa ne polymerization ye ethylene. Muindasitiri, inosanganisirawo copolymers ye ethylene ine α-olefin shoma. Polyethylene haina hwema, haina chepfu, ine wakisi, ine simba rakaderera rekudzivirira kupisa (tembiricha shoma yekushanda kusvika -70 ~ -100 ℃), kugadzikana kwakanaka kwemakemikari, inodzivirira acid ne alkali zvakanyanya (acid resistance, oxidation), hainyungudike mu solvents yakawanda patembiricha yemumba, inoderedza mvura, inoita zvakanaka mu insulation yemagetsi; Zvisinei, polyethylene inonzwa zvakanyanya kumanikidzwa kwezvakatipoteredza (makemikari nemhedzisiro yemakanika) uye inodzivirira kupisa kukwegura. Hunhu hwe polyethylene hunosiyana kubva pamhando dzakasiyana-siyana, kunyanya zvichienderana nechimiro chemamorekuru uye density. Nzira dzakasiyana dzekugadzira dzinogona kupa densities dzakasiyana (0.91-0.96g/cm3). Polyethylene inogona kugadziriswa nenzira imwecheteyo iyo mapurasitiki e thermoplastic akajairwa anoumbwa (ona Plastic processing). Inoshandiswa zvakanyanya mukugadzira mafirimu, magaba, mapaipi, waya imwe chete, waya netambo, zvinodiwa zvezuva nezuva, nezvimwewo. Inogona kushandiswa sezvinhu zvinodzivirira kupisa maTV, radar, nezvimwewo. Nekukura kweindasitiri yemafuta, kugadzirwa kwepolyethylene kwakawedzera nekukurumidza, zvichiita chikamu chimwe muzvina chepurasitiki yese yakagadzirwa. Muna 1983, kugona kwekugadzira polyethylene pasi rose kwaive matani makumi maviri nemana nemazana matanhatu nemashanu, uye chirimwa chiri kuvakwa chaive nehukuru hwematani matatu negumi nematanhatu.
Polypropylene (PP)
Resin yethermoplastic inogadzirwa nepolymerization yepropylene. Kune mhando nhatu dzemagadzirirwo, dzinoti, isotopic yakazara, atactic uye isina kunanga. Zvigadzirwa zvemaindasitiri zvinonyanya kuumbwa nemaumbirwo eisotopic. Polypropylene inosanganisirawo copolymer yepropylene uye ethylene shoma. Kazhinji inopenya, isina ruvara, haina hwema uye haina chepfu. Nekuda kwemitemo yayo yemaumbirwo, ine kristallinity yakawanda, poindi yekunyunguduka inosvika 167 ℃, inodzivirira kupisa. Nehuwandu hwe0.90g/cm3, ndiyo purasitiki yakareruka inoshandiswa. Kudzivirira ngura, simba rekudhonza 30MPa, simba, kuomarara uye kujeka zviri nani pane polyethylene. Dambudziko nderekuti kudzivirira kupisa kwakaderera hakuna kunaka, kuri nyore kukwegura, asi kunogona kugadziriswa uye kuwedzerwa antioxidant kuti ikunde.
Ruvara rwebhegi rakarukwa ruchena kana kuti ruchena, haruna chepfu uye harina kunaka, asi kukuvadza muviri wemunhu kunowanzova kudiki. Kunyangwe rakagadzirwa nemapurasitiki akasiyana-siyana emakemikari, asi rakasimba kudzivirira zvakatipoteredza, uye rine simba rekudzokorodza zvinhu;
Bhegi rakarukwa rinoshandiswa zvakanyanya, rinonyanya kushandiswa pakurongedza zvinhu zvakasiyana-siyana, uye rinoshandiswa zvakanyanya mumaindasitiri;
Bhegi rakarukwa repurasitiki rine polypropylene resin sechinhu chikuru chekugadzira, rinobuda uye rinotambanudzwa kuita shinda yakati sandara, robva rarukwa mubhegi.
Bhegi rakarukwa repurasitiki rine jira rakarukwa repurasitiki sehwaro hwechinhu, kuburikidza nepamuchina wekuyerera.
Inoshandiswa pakurongedza hupfu kana zvinhu zvakasimba zvakachekwa uye zvinhu zvinochinjika. Bhegi rakarukwa repurasitiki rakakamurwa kuita maviri mubhegi rimwe uye matatu mubhegi rimwe zvichienderana nehukuru hwezvinhu.
Zvichienderana nenzira yekusona, inogona kukamurwa kuita bhegi repasi rekusona, bhegi reparutivi rekusona, bhegi rekuisa uye bhegi rekusona rakaputirwa neglue.
Zvichienderana nehupamhi hunoshanda hwebhegi, rinogona kukamurwa kuita 450, 500, 550, 600, 650 uye 700 mm. Mativi chaiwo anofanira kubvumirana nemativi ese.
Pamusoro apa pane kufarirwa kwezvishongedzo zvidiki zvemarudzi ese ekupedzisa mabhegi akarukwa, kuburikidza nekugovana zviri mukati, kusvika pakufarirwa kwemarudzi ebhegi rakarukwa, vane ruzivo rwakadzama, kana uchida kudzika mubhegi reruzivo rwemusika, unogona kubata mutengesi mukambani yedu, kana kuEast uye bhegi rakarukwa ipapo ipapo, kutaurirana kwakabatana kunokurukurwa mupepa rino.
Nguva yekutumira: Ndira-15-2021