Kugwiritsa ntchito ndi kupanga polypropylene mu mapepala ndi ma thermoforming maphukusi

Kukonza zinthu pogwiritsa ntchito pulasitiki ndi njira yopangira zinthu pogwiritsa ntchito thermoforming yomwe yapangidwa m'zaka zaposachedwa.

Ndi kusintha kwa miyoyo ya anthu komanso kusintha kwa moyo wawo, zinthu zambiri zopangidwa ndi thermoformed zikuonekera m'mbali zonse za miyoyo ya anthu. Mapepala a polypropylene (PP). ali ndi makhalidwe monga kuchepa kwa kachulukidwe, kusawononga poizoni, kusakonza mosavuta, kukana kupindika, komanso kukana kutentha bwino. Ndi oyenera kwambiri njira zokonzera monga thermoforming ndipo amagwiritsidwa ntchito kwambiri popaka chakudya, magalimoto, zida zapakhomo ndi zina. Nthawi yomweyo, polypropylene imatha kusinthidwa motsatira kuuma, kuwonekera bwino, kulimba kwa kutentha kochepa komanso zinthu zina malinga ndi zofunikira zosiyanasiyana za makasitomala.

Mfundo zazikulu ndi makhalidwe a thermoforming

Kukonza thermoforming ndi njira yapadera yopangira pulasitiki yomwe imagwiritsidwa ntchito kusintha mapepala a thermoplastic kukhala zinthu zosiyanasiyana. Pambuyo poti pepala la thermoplastic litenthedwa kuti lifewetsedwe, kupanikizika (vacuum kapena positive pressure) kumagwiritsidwa ntchito kukakamiza pepala la thermoplastic pamwamba pa nkhungu kuti lipeze mawonekedwe ofanana ndi mawonekedwe. Pambuyo poziziritsa ndi kulimba, mawonekedwe omwe mukufuna amapezeka podula. Kukonza thermoforming kumachitika mwachangu komanso mofanana, nthawi yopangira ndi yochepa, mtengo wa nkhungu ndi wotsika, ndipo ndikoyenera kugwiritsa ntchito zokha komanso kupanga kwa nthawi yayitali. Imaonedwa kuti ndi njira yotsika mtengo komanso yothandiza kwambiri yopangira pulasitiki. Kukonza thermoforming kwakula mofulumira kuyambira pomwe idayamba, makamaka chifukwa cha kusintha kosalekeza kwa ukadaulo wa thermoforming ndi zida komanso kulowererapo kwa njira zoyeserera zamakompyuta, kukonza thermoforming kwakhala njira yayikulu yopangira yomwe ikupikisana ndi kupanga jakisoni ndi kupanga blowing. M'zaka zaposachedwa, zida zokonzera thermoforming zapita patsogolo kwambiri.

Mitundu ikuluikulu ya thermoforming ndi: vacuum forming, pressure forming, plunger-assisted forming ndi kuphatikiza kwawo. Pali zinthu zambiri zomwe zimapangidwa ndi thermoforming pamsika, monga makapu, saucers, food trays, toys, helmets, komanso zida zamagalimoto, zokongoletsera zomangamanga, zida zamakemikolo, ndi zina zotero. Poyerekeza ndi injection molding, thermoforming ili ndi ubwino wogwiritsa ntchito bwino kwambiri, ndalama zochepa pazida, komanso kuthekera kopanga zinthu zazikulu pamwamba. Kafukufuku ndi chitukuko cha zipangizo za polypropylene zogwira ntchito bwino monga high clearance, high melt strength, ndi low warpage zalimbikitsa kugwiritsa ntchito ndi kupanga mapepala a polypropylene m'munda wa thermoforming.

Mapepala a PP opangidwa ndi thermoformed amagwiritsidwa ntchito m'minda yogwiritsira ntchito

Kupaka chakudya

Zinthu zopangidwa ndi PP zopangidwa ndi thermoformed zokonzera chakudya zimaphatikizapo mathireyi osiyanasiyana monga mabokosi otsekedwa ndi ndiwo zamasamba, mathireyi a nyama, mathireyi a tofu, mabokosi a nkhomaliro otayika, ndi zina zotero. Mathireyi ena ndi oyera ngati mkaka, akuda, ofiira, ndi zina zotero, ndipo ena ndi zinthu zowonekera bwino. Nthawi yomweyo, zivindikiro za chikho ndi zivindikiro za thireyi zofanana ndi zinthu zopangidwa ndi thermoformed pamwambapa zimapangidwanso pogwiritsa ntchito PP yowonekera bwino yambiri.

Ma phukusi osakhala chakudya

imagwiritsidwa ntchito makamaka pa ma blister azachipatala, ma phukusi a zida (zolembera, zida zamagetsi), zinthu zamagetsi, ndi zinthu zoyeretsera.

Mapepala ndi mabokosi opindika

Mapepala a PP amagwiritsidwa ntchito kwambiri m'mapepala olembera zinthu, zodzoladzola ndi mabokosi opindika zidole, ma phukusi a mawindo ndi zopachika m'masitolo akuluakulu. PP yochepa yowonekera imagwiritsidwa ntchito m'mabokosi opindika apamwamba.

Pepala la PP la Thermoformed Food Packaging

● Chikho

Makapu opangidwa ndi thermoformed makamaka ndi makapu otayidwa, monga makapu a tiyi wa mkaka, makapu a zakumwa zoziziritsa kukhosi, makapu a chakudya chofulumira, ndi zina zotero. Amagwiritsidwa ntchito kwambiri m'malesitilanti odyera zakudya zofulumira, m'masitolo ogulitsa tiyi wa mkaka, m'mafakitale opanga zinthu zopangidwa ndi jelly, ndi zina zotero. Zipangizo zopangira zimakhala ndi mapepala a PP owonekera bwino, ndipo zakumwa zina zozizira zimapangidwa ndi PET.

● Bokosi la chakudya chamasana losagonja

Mabokosi wamba a chakudya chamasana amakhala ndi chakudya chotentha pang'ono. Komabe, ogula amafunikanso kusunga phala lotentha ndi supu yotentha, kapena kuzisakaniza ndi nthunzi yotentha kwambiri. Izi zimapangitsa kuti pakhale zofunikira kwambiri pa zipangizo zopangira utomoni. PET ndi PS sizimalimbana ndi kutentha kwambiri. Polypropylene imakhala ndi kukana kutentha bwino, mtengo wake ndi wosavuta kupeza, ndipo yakhala chinthu chodziwika bwino popanga.

● Chivundikiro

Zinthu zazikulu zimaphatikizapo zivindikiro za mbale, zivindikiro za mabokosi a nkhomaliro, zivindikiro za makapu, ndi zina zotero, zomwe zimagwiritsidwa ntchito kwambiri m'malesitilanti odyera zakudya mwachangu, m'masitolo ogulitsa tiyi wa mkaka, m'masitolo ogulitsa makeke, ndi zina zotero. Zivindikirozo zimakhala zowonekera bwino, ndipo zivindikiro za PP nthawi zambiri zimagwiritsidwa ntchito pa zakumwa zotentha.

● Mkati mwa chakudya

Mkati mwa chakudya mumagwiritsidwa ntchito makamaka popaka mabisiketi, tchipisi ta mbatata, mtedza ndi zokhwasula-khwasula zina. Padzakhala m'kati mwa paketi, makamaka m'mafakitale ogulitsa chakudya mwachangu. Pakadali pano, m'kati mwa chakudya mumakhala mowonekera bwino, komanso moyera ngati mkaka. Pofuna kuti chakudya chopakidwa m'mapaketi chikhale chodzaza komanso chosaphwanyidwa, makampani ambiri opanga zakudya zokhwasula-khwasula akugwiritsa ntchito m'kati mwa chakudya.