{"id":24730,"date":"2023-11-15T19:52:46","date_gmt":"2023-11-16T03:52:46","guid":{"rendered":"https:\/\/www.evafilm.net\/?p=24730"},"modified":"2023-11-15T19:52:46","modified_gmt":"2023-11-16T03:52:46","slug":"the-flow-speed-of-eva-film-during-lamination","status":"publish","type":"post","link":"https:\/\/www.evafilm.net\/pt\/the-flow-speed-of-eva-film-during-lamination\/","title":{"rendered":"A velocidade de fluxo do filme EVA durante a lamina\u00e7\u00e3o."},"content":{"rendered":"<p class=\"text-black\" style=\"margin-top: 0cm; background: white;\"><span lang=\"EN-US\" style=\"font-family: 'Arial','sans-serif'; color: #1b1642;\">\u041d\u0430 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c \u0442\u0435\u0447\u0435\u043d\u0438\u044f \u043f\u043b\u0435\u043d\u043a\u0438 \u042d\u0412\u0410 (\u044d\u0442\u0438\u043b\u0435\u043d\u0432\u0438\u043d\u0438\u043b\u0430\u0446\u0435\u0442\u0430\u0442\u0430) \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u043b\u0430\u043c\u0438\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u043b\u0438\u044f\u0435\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0444\u0430\u043a\u0442\u043e\u0440\u043e\u0432, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u0442\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u0443 \u0438 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a\u0438 \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430 \u042d\u0412\u0410.<\/span><\/p>\n<p class=\"text-black\" style=\"margin-top: 0cm; background: white; box-sizing: border-box; margin-bottom: 0.75rem !important;\"><span lang=\"EN-US\" style=\"font-family: 'Arial','sans-serif'; color: #1b1642;\">EVA \u00e9 um material termopl\u00e1stico com um ponto de fus\u00e3o distinto. Quando este ponto \u00e9 ultrapassado, o pol\u00edmero est\u00e1 completamente fundido. O \u00edndice de fluidez (MFI) do EVA tamb\u00e9m \u00e9 significativamente maior do que outros pol\u00edmeros como o PVB (polivinil butiral). Isso significa que quando o pol\u00edmero EVA \u00e9 fundido, ele tamb\u00e9m fica muito \u201cl\u00edquido\u201d, o que permite preencher grandes vazios de forma eficiente durante o processo de lamina\u00e7\u00e3o. Um processo t\u00edpico de forno a v\u00e1cuo para EVA come\u00e7a com um v\u00e1cuo frio \u00e0 temperatura ambiente (20\u00b0C), onde normalmente o v\u00e1cuo \u00e9 mantido por 30 minutos por metro quadrado de superf\u00edcie laminada. Em seguida, o saco de v\u00e1cuo pode ser aquecido at\u00e9 85\u00b0C em 30 minutos. Numa segunda etapa, o forno \u00e9 aquecido at\u00e9 130\u00b0C \u2013150\u00b0C, dependendo do caso espec\u00edfico. Quando \u00e9 necess\u00e1rio muito fluxo, como no caso de vidros com estrutura superficial profunda, \u00e9 prefer\u00edvel uma temperatura mais alta. A alta temperatura precisa ser mantida por 1 a 3 horas, dependendo da espessura do vidro e do grau de cura do EVA. Tamb\u00e9m \u00e9 importante notar que o EVA \u00e9 ideal para a fabrica\u00e7\u00e3o de fornos a v\u00e1cuo sem autoclave devido \u00e0s suas boas propriedades de fluxo. Muitas vezes \u00e9 o m\u00e9todo de escolha quando \u00e9 necess\u00e1rio processar laminados complexos com vidro estruturado e\/ou curvo e\/ou inser\u00e7\u00f5es.<\/span><\/p>\n<p class=\"text-black\" style=\"margin-top: 0cm; background: white;\"><span lang=\"EN-US\" style=\"font-family: 'Arial','sans-serif'; color: #1b1642;\">Em resumo, a velocidade de fluxo do filme EVA durante a lamina\u00e7\u00e3o \u00e9 influenciada pelas propriedades espec\u00edficas do material EVA e pelas condi\u00e7\u00f5es sob as quais o processo de lamina\u00e7\u00e3o \u00e9 conduzido. O alto \u00edndice de fluidez do EVA permite que ele flua e preencha vazios de forma eficiente durante o processo de lamina\u00e7\u00e3o, principalmente quando a temperatura do processo \u00e9 mantida em um n\u00edvel elevado.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>The flow speed of EVA (ethylene-vinyl acetate) film during the lamination process is influenced by several factors including temperature and the specific characteristics of the EVA material. EVA is a thermoplastic material with a distinct melting point. When this point is crossed, the polymer is in a completely molten state. The melt flow index (MFI)&hellip;<\/p>","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-24730","post","type-post","status-publish","format-standard","hentry","category-uncategorized","category-1","description-off"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/posts\/24730","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/comments?post=24730"}],"version-history":[{"count":1,"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/posts\/24730\/revisions"}],"predecessor-version":[{"id":24731,"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/posts\/24730\/revisions\/24731"}],"wp:attachment":[{"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/media?parent=24730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/categories?post=24730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.evafilm.net\/pt\/wp-json\/wp\/v2\/tags?post=24730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}