Kodi kutentha kwanyengo yachisanu kumakhala ndi zotsatira zotani panjira yosinthika yopangira ma lamination?

Pamene nyengo yozizira ikuyandikira, kutentha kumatsika pang'onopang'ono, ndipo mavuto ena omwe amapezeka m'nyengo yozizira ayamba kuchulukirachulukira, mongaMatumba owiritsa a NY/PEndiNY/CPP zikwama zobwezazomwe ndi zolimba komanso zolimba; zomatira zimakhala ndi zoyambira zochepa; ndi maonekedwe a gulu la mankhwala Mavuto monga kusiyana.

https://www.stblossom.com/retort-pouch-high-temperature-resistant-plastic-bags-spout-pouch-liquid-packaging-pouch-for-pet-food-product/
thumba lachikwama (4)

01 Zomatira zimakhala ndi zoyambira zochepa

Popeza kuti m'malo osiyanasiyana kutentha kwatsika,Makasitomala ena adanenanso kuti mphamvu yolumikizirana ya guluu wotentha kwambiri UF-818A/UK-5000 yatsika popanga mapangidwe a PET/AL/RCPP, zomwe zikutanthauza kuti kulimba kwa gawo lakunja kuli bwino, koma mphamvu ya wosanjikiza wamkati ndi wotsika kwambiri. Koma atayiyika m'chipinda chokalamba kwa mphindi khumi, nthawi yomweyo imapeza mphamvu zabwino. Wogula wakhala akugwiritsa ntchito mankhwalawa kwa nthawi yoposa theka la chaka ndipo wakhala wokhazikika kwambiri, ndipo ndondomeko yamakono yamakono siinasinthe kuchokera pachiyambi.

Pambuyo poyang'anitsitsa pamalopo, zidapezeka kuti kusagwirizana kwa zinthuzo kunali kwachilendo ndipo kuchuluka kwa guluu komwe kumagwiritsidwa ntchito kunafika 3.7 ~ 3.8g / m2, ndipo panalibe mavuto. Komabe, pamene mafelemu unit anakumana ndi filimuyo, anapeza kuti filimuyo sanamve kutentha, ndipo ngakhale kuzizira. Kuyang'ana pa zoikamo parameter ya gulu lodzigudubuza gulu, gulu wodzigudubuza kutentha ndi 50 ° C ndi kukakamiza gulu ndi 0.3MPa. Pambuyo paKutentha kwa laminating roller kunakwezedwa ku 70 ° C ndipo kuthamanga kwa laminating kunakwezedwa ku 0.4Mpa, mphamvu zomangira zoyamba zinali bwino kwambiri, ndipo maonekedwe apangidwe adasinthidwanso.

Makasitomala adapeza kuti ndi zachilendo: magawo awiri a kutentha kwa laminating 50 ℃ ndi kuthamanga kwa laminating 0.3Mpa akhala akugwiritsidwa ntchito kale, ndipo palibe chomwe chachitika. N’chifukwa chiyani tiyenera kusintha panopa?

Phukusi Lokhazikika Pochithumba la Pulasitiki Kuyikapo Mtsamiro Pochi Kuyika Kubweza Pochi Choyikapo Thumba lamadzimadzi Choyikapo Chithumba Choyimilira Choyimilira Papepala Chithumba Choyikapo Chikwama Choyikapo Chikwama Choyikapo Chipopu Choyikapo Chopaka Chakudya Thumba la Tiyi thumba lokonzekera kale

Tiyeni tiyambe ndi kusanthula kukakamiza kwamagulu: Panthawi yowuma yowuma, kukakamiza kwamagulu pa pepala la wopanga aliyense ndi makina owuma owuma amawonetsedwa mu bar kapena MPa, nthawi zambiri 3bar kapena 0.3 ~ 0.6MPa. Mtengo uwu ndi wofanana ndi Kupanikizika kwa silinda yolumikizidwa ndi rabara ya rabara. M'malo mwake, kukakamiza kophatikizana kuyenera kukhala kukakamiza kwazinthu zopanikizidwa pakati pa chopukutira chophatikizika ndi chopukutira chachitsulo chophatikizika. Kupanikizika kumeneku kuyenera kukhala kgf/m kapena kgf/cm, ndiko kuti, kukakamiza kwa unit kutalika. Ndiko kuti, F = 2K * P * S / L (K ndi coefficient proportional, yomwe imagwirizana ndi njira yopondereza ya silinda. Mtundu wothamanga wolunjika ndi 1, ndipo mtundu wa lever ndi waukulu kuposa 1, womwe umagwirizana ndi chiŵerengero. mkono wa mphamvu ya lever ndi mkono wotsutsa P ndi mphamvu ya silinda; Chifukwa kukula kwa silinda yamakina osiyanasiyana ndi kosiyana ndipo njira zogwiritsira ntchito zokakamiza zimakhala zosiyana, pamene zikhalidwe zomwe zimawonetsedwa pazitsulo zokakamiza za makina osiyanasiyana zimakhala zofanana, zovuta zenizeni sizili zofanana.

工厂图 (4)

Tiyeni tiwone kutentha kwa lamination: Mu lamination youma, zomatira zikatuluka mumsewu wowumitsa, zosungunulira zimatuluka nthunzi, ndikusiya guluu wouma. Izi ndichifukwa choti zomatira zowuma zowumanso zowuma za polyurethane zimataya kukhuthala kwa firiji pambuyo poyanika.Kuti magawo awiriwa agwirizane bwino, zomatirazo ziyenera kuyambitsa kumamatira kwake. Choncho, pamene laminating, ndi laminating wodzigudubuza ayenera usavutike mtima kuti pamwamba kutentha kungachititse zomatira kupanga adamulowetsa mamasukidwe akayendedwe.

Pambuyo pa mwezi wa November, kutentha kunatsika kwambiri m'madera ena. Chakumapeto kwa November, m’madera ena kutentha kunali pafupifupi 10°C. Makasitomala akamaphatikiza RCPP, zida zopangira zimakokedwa mwachindunji kuchokera kumalo osungiramo zinthu kupita kumalo opangira zinthu kuti apange. Panthawiyi, kutentha kwa RCPP ndikotsika kwambiri. Kuphatikizidwa ndi kutentha kochepa kwa lamination, filimuyi imatenthedwa kwa kanthawi kochepa panthawi ya lamination, ndipo kutentha kwa filimu yophatikizika kumakhala kochepa kwambiri. Kulemera kwa ma molekyulu a guluu wophikira kwambiri ndi wokulirapo ndipo amafunikira kutenthedwa kuti alimbikitse ntchito ya zomatira. Ngati kutentha kuli kochepa kwambiri, mphamvu zomangira zoyamba zidzachepetsedwa kwambiri. Pambuyo poyikidwa mu chipinda chochiritsira, ntchito ya zomatira imalimbikitsidwa ndipo mphamvu imatha kuwonjezeka nthawi yomweyo.

Kotero, pamene ife tinawonjezera kutentha kophatikizana ndi kukakamiza kowonjezera, vutoli linathetsedwa.

Vuto lina limene lingakumane nalo pamene kutentha kwa filimu kuli kochepa ndi chifukwa chakuti kusiyana kwa kutentha pakati pa mkati ndi kunja kwa msonkhano kumakhala kwakukulu, ndipo msonkhano wosindikizira umakhala wonyezimira, pamene filimuyo imatsegulidwa, nthunzi yamadzi imasungunuka, ndi pamwamba. filimuyo idzakhala ndi kumverera konyowa, zomwe zidzakhudza maonekedwe a mankhwala pambuyo pa ukalamba. ndipo kulimba kumayambitsa zoopsa zobisika. Kuphatikiza apo, chifukwa cha kusayenda bwino komwe kumachitika chifukwa cha kutentha pang'ono pakagwiritsidwa ntchito zomatira, zovuta zamawonekedwe amagulu zimachitikanso nthawi ndi nthawi.

Njira zopewera:M'nyengo yozizira, zopangira ndi zomatira ziyenera kuyikidwa mu msonkhano wopanga maola 24 pasadakhale momwe zingathere. Makasitomala ndi zinthu akhoza kumanga chisanadze wowonjezera kutentha. Moyenera kuonjezera kutentha ndi kukakamiza lamination wodzigudubuza kuonetsetsa kuti filimu "ofunda" pambuyo lamination ndi mapiringidzo.

工厂图 (5)

02 Chikwama cha retort ndi cholimba komanso cholimba

Pofika nyengo yozizira, matumba owiritsa a NY / PE ndi matumba a NY / CPP obwezeretsa amakhala olimba komanso olimba. Chotsatira chake ndi chakuti kuchuluka kwa kusweka kwa thumba kumawonjezeka. Izi zakhala vuto lanthawi yayitali mumakampani onse. Mabizinesi akulu akulu onyamula katundu amavutitsidwanso ndi vutoli ndipo akufunafuna mayankho.

Matumba a NY/CPP osamva kutentha kwambiri nthawi zambiri amatanthawuza zikwama zophatikizika zomwe zimatha kutsekedwa pa 121 ° C kwa mphindi zopitilira 30. Kupaka kwamtunduwu kumakhala ndi kuwonekera bwino, mphamvu yayikulu, ndipo imagwiritsidwa ntchito kwambiri. Matumba a NY/PE nthawi zambiri amagwiritsidwa ntchito kuwiritsa komanso kupukuta matumba chifukwa champhamvu zawo komanso kulimba kwawo.Komabe, matumba amtundu woterewa ndi olefin monga wosanjikiza wosindikizira wamkati nthawi zonse amakumana ndi mavuto awiri akuluakulu: choyamba, m'nyengo yozizira kwambiri, kuphulika kwa thumba kumawonjezeka, ndipo kuphulika kwa thumba kumawonjezeka; chachiwiri, mutatha kuphika kapena kuwira, thumba limakhala lolimba ndipo brittleness imawonjezeka.

Nthawi zambiri, zosanjikiza zamkati zamatumba otentha kwambiri ndi RCPP. Ubwino waukulu wa RCPP ndikuti imakhala yowonekera bwino ndipo imatha kupirira kutentha kwambiri kuposa 121 ° C. Choyipa chake ndikuti ndizovuta komanso zolimba kuposa zida zina zosindikizira kutentha. Izi ndi zoona makamaka m'madera otsika kutentha.RCPP imagawidwa m'nyumba ndi kunja. Zikumveka kuti zinthu zapakhomo zimakhala ndi homopolymerized, ndipo ndithudi makampani ena akupanga kusintha kwa RCPP. RCPP yochokera kunja imakhala yokhazikika, ndipo kukana kwa kutentha kwa homopolymer ndikoyipa kwambiri kuposa block. Homopolymer RCPP idzasinthidwa pambuyo pochotsa kutentha kwambiri, ndiko kuti, RCPP idzakhala yolimba komanso yowonongeka, pamene chipika RCPP chikhoza kusungidwa chisanatsekeredwe. za kufewa.

工厂图 (6)

Pakali pano, Japan ili patsogolo pa kafukufuku wapadziko lonse wa polyolefins. Ma polyolefin aku Japan amatumizidwanso padziko lonse lapansi. Kufewa ndi machitidwe onse a filimu yake ya NY / PE ndi filimu yophikira kwambiri ya RCPP ndi yabwino kwambiri.

Choncho, ine ndekha ndimakhulupirira kuti zipangizo za polyolefin zimagwira ntchito yofunika kwambiri pavuto la kuuma ndi kuphulika kwa matumba owiritsa a NY / PE ndi matumba a NY / CPP obwezeretsa m'nyengo yozizira. Kuphatikiza apo, kuwonjezera pa kukhudzidwa kwa zida za polyolefin, inki ndi zomatira zophatikizika zimakhalanso ndi zotsatirapo zina, ndipo ziyenera kulumikizidwa kuti pamapeto pake zipange matumba ophika owiritsa komanso otentha kwambiri.

Zima zimakhala ndi zotsatira zambiri pa extrusion lamination, yomwe kusintha kwa mpweya kumakhala kofunika kwambiri, ndipo aliyense ayenera kumvetsera.

Phukusi Lokhazikika Pochithumba la Pulasitiki Kuyikapo Mtsamiro Pochi Kuyika Kubweza Pochi Choyikapo Thumba lamadzimadzi Choyikapo Chithumba Choyimilira Choyimilira Papepala Chithumba Choyikapo Chikwama Choyikapo Chikwama Choyikapo Chipopu Choyikapo Chopaka Chakudya Thumba la Tiyi thumba lokonzekera kale

Nthawi yotumiza: Dec-09-2023