{"id":1235,"date":"2022-12-05T18:43:02","date_gmt":"2022-12-05T18:43:02","guid":{"rendered":"https:\/\/www.husyca.com\/que-es-una-extrusora-de-plastic\/"},"modified":"2023-07-07T09:04:10","modified_gmt":"2023-07-07T09:04:10","slug":"que-es-una-extrusora-de-plastic","status":"publish","type":"post","link":"https:\/\/www.husyca.com\/ca\/que-es-una-extrusora-de-plastic\/","title":{"rendered":"Qu\u00e8 \u00e9s una extrusora de pl\u00e0stic?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A Husyca som som <strong>prove\u00efdors de fabricants de pl\u00e0stic que tenen extrusores<\/strong>. L&#8217; <strong>extrusi\u00f3 de pl\u00e0stics<\/strong> \u00e9s un proc\u00e9s continu de fabricaci\u00f3 de gran volum en el qual un material termopl\u00e0stic, en forma de pols, pellets o granulat, es fon homog\u00e8niament i despr\u00e9s es for\u00e7a la seva sortida de la matriu de conformaci\u00f3 mitjan\u00e7ant pressi\u00f3. <\/p>\n\n<p class=\"wp-block-paragraph\">A <strong>l&#8217;extrusi\u00f3 per fusell<\/strong>, la pressi\u00f3 procedeix de la rotaci\u00f3 del fusell contra la paret de la c\u00e0mara. A mesura que el pl\u00e0stic fos passa a trav\u00e9s de la matriu, adquireix la forma de l&#8217;orifici de la matriu i surt de l&#8217;extrusora. El <strong>producte extru\u00eft<\/strong> s&#8217;anomena extrudat.<\/p>\n\n<h2 class=\"wp-block-heading\">Una extrusora t\u00edpica consta de quatre zones<\/h2>\n\n<h3 class=\"wp-block-heading\">Zona d&#8217;alimentaci\u00f3<\/h3>\n\n<p class=\"wp-block-paragraph\">En aquesta zona, la profunditat de pas \u00e9s constant. La dist\u00e0ncia entre el di\u00e0metre m\u00e9s gran a la part superior de l&#8217;h\u00e8lix i el di\u00e0metre menor del fusell a la part inferior de l&#8217;h\u00e8lix \u00e9s la profunditat de l&#8217;h\u00e8lix.<\/p>\n\n<h3 class=\"wp-block-heading\">Zona de transici\u00f3 o de compressi\u00f3<\/h3>\n\n<p class=\"wp-block-paragraph\">En aquesta zona comen\u00e7a a disminuir la profunditat de pas. En efecte, el material termopl\u00e0stic es comprimeix i es comen\u00e7a a plastificar.<\/p>\n\n<h3 class=\"wp-block-heading\">Zona de mescla<\/h3>\n\n<p class=\"wp-block-paragraph\">En aquesta zona, la profunditat del vol torna a ser constant. Per garantir que el material es fon completament i es barreja de forma homog\u00e8nia, hi pot haver un element mesclador especial.<\/p>\n\n<h3 class=\"wp-block-heading\">Zona de dosificaci\u00f3n<\/h3>\n\n<p class=\"wp-block-paragraph\">Zona de dosificaci\u00f3 Aquesta zona t\u00e9 una profunditat de pas m\u00e9s petita que la zona de mescla, per\u00f2 es mant\u00e9 constant.<\/p>\n\n<h2 class=\"wp-block-heading\">A m\u00e9s, en aquesta zona la pressi\u00f3 empeny la massa fosa a trav\u00e9s de la matriu d&#8217;emmotllament.<\/h2>\n\n<h3 class=\"wp-block-heading\">Transfer\u00e8ncia de calor<\/h3>\n\n<p class=\"wp-block-paragraph\">La transfer\u00e8ncia de calor \u00e9s l&#8217;energia transferida del <strong>motor de l&#8217;extrusora<\/strong> a l&#8217;eix de l&#8217;extrusora. A m\u00e9s, la fusi\u00f3 del pol\u00edmer es veu afectada pel perfil del fusell i el temps de resid\u00e8ncia.<\/p>\n\n<h3 class=\"wp-block-heading\">Fricci\u00f3<\/h3>\n\n<p class=\"wp-block-paragraph\">Es produeix per la fricci\u00f3 interna de la pols, el perfil del fusell, la velocitat del fusell i la velocitat dalimentaci\u00f3.<\/p>\n\n<h3 class=\"wp-block-heading\">C\u00e0mara extrusora<\/h3>\n\n<p class=\"wp-block-paragraph\">S&#8217;utilitzen tres o m\u00e9s controladors de temperatura independents per mantenir la temperatura de les c\u00e0mares.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A Husyca som som prove\u00efdors de fabricants de pl\u00e0stic que tenen extrusores. L&#8217; extrusi\u00f3 de pl\u00e0stics \u00e9s un proc\u00e9s continu de fabricaci\u00f3 de gran volum en el qual un material termopl\u00e0stic, en forma de pols, pellets o granulat, es fon homog\u00e8niament i despr\u00e9s es for\u00e7a la seva sortida de la matriu de conformaci\u00f3 mitjan\u00e7ant pressi\u00f3. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":957,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1235","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categorizar"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu\u00e8 \u00e9s una extrusora de pl\u00e0stic? - Husyca S.A. 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