Don cimma kyakkyawan sakamako na warkewa, ana buƙatar la'akari da abubuwa da yawa, gami da:
1. Siffar dakin warkarwa da matsayi mai kyau: sauri da adadin iska mai zafi daga na'urar dumama da rami;ƙasa da bangarorin biyu ko da yawa na dakin warkewa suna da isasshiyar iska mai zafi da iska;ƙananan bambanci tsakanin ainihin da saita zafin jiki, da adana zafi da sharar gida sun hadu da buƙatun;Rolls na fim suna da sauƙin motsawa da ɗauka.
2. Samfuran sun haɗu da buƙatun fasaha.
3. Ayyukan, darajar corona, juriya na zafi, da dai sauransu na fim din lamination.
4. Adhesives: m m, ƙarfi m, guda ko biyu bangaren ruwa tushe m, zafi narkewa m, da dai sauransu.
Wannan takarda ta fi mayar da hankali kan fina-finan lamination da adhesives.
1. Lamination Films
A jiki, zafi juriya da shamaki yi na PE film, wanda aka yadu amfani, zai zama mafi alhẽri, lokacin da yawa na PE tashi.Fina-finan PE masu yawa iri ɗaya amma tsarin samarwa daban-daban suna da wasan kwaikwayo daban-daban.
CPE za a iya sanyaya da sauri, tare da low crystallinity, high nuna gaskiya da kuma low turbidity.Amma tsarin kwayoyin halitta ba bisa ka'ida ba, yana mai da shi mummunan aikin shinge, wanda shine babban watsawa.Kuma daidai yake da LDPE.Don haka, maganin zafin jiki bai kamata ya yi girma ba yayin amfani da fina-finan PE.Lokacin da juriya mai zafi na PE ya inganta, zazzabin warkewa zai iya zama mafi girma.
2. Adhesives
2.1 EtylAdhesive mai tushe
Dangane da wasan kwaikwayon fina-finai na lamination da adhesives, ana iya raba yanayin warkewa zuwa matakai daban-daban:
1. Zazzabi 35℃, lokaci 24-48h
2. Zazzabi 35-40℃, lokaci 24-48h
3. Zazzabi 42-45℃, lokaci 48-72h
4. Zazzabi 45-55℃, lokaci 48-96h
5. Musamman, zafin jiki sama da 100℃, lokaci bisa ga goyon bayan fasaha.
Don samfuran gama gari, la'akari da yawa, kauri, hana katange, aikin juriya na zafi na fina-finai da girman jakunkuna, zazzabin warkewa bai kamata ya yi girma ba.Yawancin lokaci, 42-45℃ko ƙasa ya isa, lokaci 48-72 hours.
Fina-finan lamination na waje, waɗanda ke buƙatar babban aiki da kyakkyawan juriya mai zafi sun dace da babban zafin jiki, kamar sama da 50.℃.Fina-finai na ciki, kamar PE ko zafi mai rufewa CPP, sun dace da 42-45℃, lokacin warkewa na iya zama tsayi.
Samfuran tafasa ko mayarwa, waɗanda ke buƙatar babban aiki da tsayin daka na zafi, yakamata su dace da yanayin warkewa wanda masana'anta na manne ke samarwa.
Ya kamata lokacin warkewa ya dace da ƙimar ƙarewar amsawa, ƙimar juzu'i da aikin rufewar zafi.
Samfura na musamman na iya buƙatar ƙarin zafin warkewa.
2.2 Manne mara ƙarfi
Idan aikin rufewa ya dace da abin da ake buƙata, don samfuran laminating mara ƙarfi, wanda fina-finai na ciki ke da ƙarancin ƙarancin yawa, adhesives suna da monomers masu yawa kyauta, yana sa ya yi wuya a hatimi.Sabili da haka, ana bada shawarar maganin ƙananan zafin jiki, don 38-40℃.
Idan adadin kammala amsa ya cika buƙatun, ya kamata a yi la'akari da tsawon lokacin warkewa.
Idan fina-finai masu rufe zafi suna da girma mai yawa, zafin jiki ya kamata ya zama 40-45℃. Idan ƙimar ƙarewar amsawa da aikin rufewar zafi suna buƙatar haɓaka, lokacin warkewa ya kamata ya fi tsayi.
Gwaji sosai dole ne kafin samarwa da yawa, don tabbatar da inganci.
Menene ƙari, ya kamata a yi la'akari da zafi.Musamman a lokacin bushewar hunturu, zafi mai kyau zai iya haɓaka ƙimar amsawa.
2.3 Adhesives na Ruwa
Lokacin laminating VMCPP, injin lamination dole ne ya bushe sosai, ko kuma aluminied Layer zai zama oxidized.Yayin warkewa, zafin jiki bai kamata ya yi girma ko ƙasa ba.Babban zafin jiki zai haifar da ƙima mai ƙarfi.
2.4 Zafi Narke Manne
Yawancin lokaci zaɓi magani na halitta, amma aikin adhesion bayan narkewa ya kamata a lura da shi.
3. Tsananin Sarrafa Maganin Zazzabi
Bisa ga bincike, game da abin da ya faru na yawan amsawa, kusan babu wani abu a ƙarƙashin 30℃. Sama da 30℃, kowane 10℃mafi girma, ƙimar amsawa ta inganta kusan sau 4.Amma shiBa daidai ba don inganta yanayin zafi don haɓaka ƙimar amsawa a makance, ya kamata a lura da abubuwa da yawa:ainihin ƙimar amsawa, ƙimar juzu'i da ƙarfin rufewar zafi.
Don cimma sakamako mafi kyau na warkewa, ya kamata a raba zafin zafin jiki zuwa sassa daban-daban, bisa ga fina-finai da tsarin lamination.
A halin yanzu, matsalolin gama gari sune kamar haka:
Na ɗaya, zafin jiki na warkewa ya yi ƙasa sosai, yana yin ƙarancin amsawa, kuma samfurin yana da matsala bayan an rufe zafi ko tafasa.
Biyu, curing zafin jiki ya yi yawa da zafi sealing fim yana da low yawa.Samfurin yana da mummunan aikin rufewa mai zafi, babban juzu'i mai ƙarfi da mummunan tasirin toshewa.
4. Kammalawa
Don cimma sakamako mafi kyau na warkarwa, ya kamata a yanke shawarar zafin jiki da lokaci ta yanayin yanayin yanayi da zafi, aikin fim da aikin mannewa.
Lokacin aikawa: Afrilu-22-2021