{"id":1548,"date":"2025-06-30T11:43:42","date_gmt":"2025-06-30T03:43:42","guid":{"rendered":"https:\/\/njdema.com\/?p=1548"},"modified":"2025-06-30T11:43:42","modified_gmt":"2025-06-30T03:43:42","slug":"how-to-solve-broken-strands-of-plastic-twin-screw-extruder","status":"publish","type":"post","link":"https:\/\/njdema.com\/zh\/how-to-solve-broken-strands-of-plastic-twin-screw-extruder.html","title":{"rendered":"\u5982\u4f55\u89e3\u51b3\u5851\u6599\u53cc\u87ba\u6746\u6324\u51fa\u673a\u5bb9\u6613\u65ad\u6761\u7684\u95ee\u9898"},"content":{"rendered":"<p><strong><b>What\u00a0can\u00a0we\u00a0do\u00a0if\u00a0the\u00a0material\u00a0discharge\u00a0is\u00a0unstable\u00a0and\u00a0easy\u00a0to\u00a0break\u00a0up?<\/b><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>There\u00a0are\u00a0many\u00a0factors\u00a0that\u00a0lead\u00a0to\u00a0material\u00a0discharge\u00a0unstablely\u00a0and\u00a0easy\u00a0break\u00a0up\u00a0from\u00a0corotating\u00a0parallel\u00a0twin\u00a0screw\u00a0granulator,\u00a0which\u00a0need\u00a0to\u00a0investigate\u00a0one\u00a0by\u00a0one,\u00a0we\u00a0list\u00a0the\u00a0common\u00a0reasons\u00a0in\u00a0the\u00a0following\u00a0for\u00a0your\u00a0reference:<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<ol>\n<li><strong><b>Unstable\u00a0feeding<\/b><\/strong>\n<ul>\n<li>The\u00a0mixture\u00a0is\u00a0agglomerated\u00a0(including\u00a0high\u00a0temperature\u00a0agglomerated\u00a0or\u00a0agglomerated\u00a0by\u00a0adding\u00a0too\u00a0much\u00a0liquid\u00a0additives)\u00a0and\u00a0bridging\u00a0in\u00a0the\u00a0hopper.<\/li>\n<li>Too\u00a0much\u00a0powder,\u00a0moisture\u00a0absorption,\u00a0agglomeration,\u00a0resulting\u00a0in\u00a0increased\u00a0friction\u00a0between\u00a0the\u00a0mixture\u00a0and\u00a0the\u00a0hopper\u00a0wall,\u00a0and\u00a0a\u00a0bridge\u00a0is\u00a0built\u00a0in\u00a0the\u00a0hopper.<\/li>\n<li>There\u00a0is\u00a0hot\u00a0gas\u00a0in\u00a0the\u00a0barrel\u00a0that\u00a0arches\u00a0back\u00a0to\u00a0the\u00a0direction\u00a0of\u00a0the\u00a0feeding\u00a0port.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u200b<\/p>\n<ol start=\"2\">\n<li><strong><b>Poor\u00a0plasticization\u00a0of\u00a0materials<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>The\u00a0extrusion\u00a0temperature\u00a0is\u00a0low\u00a0or\u00a0the\u00a0screw\u00a0shear\u00a0is\u00a0too\u00a0weak,\u00a0the\u00a0material\u00a0is\u00a0not\u00a0fully\u00a0plasticized,\u00a0and\u00a0the\u00a0material\u00a0lumps\u00a0appear,\u00a0which\u00a0cause\u00a0broken\u00a0strips\u00a0under\u00a0the\u00a0action\u00a0of\u00a0gravity.<\/li>\n<li>There\u00a0are\u00a0low\u00a0melting\u00a0point\u00a0additives\u00a0in\u00a0the\u00a0formula,\u00a0which\u00a0cause\u00a0poor\u00a0plasticization\u00a0and\u00a0broken\u00a0strips\u00a0under\u00a0the\u00a0premise\u00a0of\u00a0weak\u00a0screw\u00a0shear\u00a0or\u00a0increased\u00a0gap\u00a0between\u00a0the\u00a0screw\u00a0and\u00a0the\u00a0barrel\u00a0and\u00a0weak\u00a0shear.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ol start=\"3\">\n<li><strong><b>Poor\u00a0exhaust\u00a0or\u00a0insufficient\u00a0vacuum<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>The\u00a0processing\u00a0temperature\u00a0is\u00a0too\u00a0high\u00a0or\u00a0the\u00a0local\u00a0shear\u00a0of\u00a0the\u00a0screw\u00a0is\u00a0too\u00a0strong\u00a0or\u00a0the\u00a0screw\u00a0is\u00a0overheated,\u00a0resulting\u00a0in\u00a0the\u00a0decomposition\u00a0of\u00a0some\u00a0flame\u00a0retardants\u00a0and\u00a0other\u00a0additives,\u00a0releasing\u00a0gas,\u00a0and\u00a0the\u00a0vacuum\u00a0does\u00a0not\u00a0pump\u00a0out\u00a0the\u00a0gas\u00a0in\u00a0time,\u00a0and\u00a0the\u00a0gas\u00a0is\u00a0trapped\u00a0in\u00a0the\u00a0strip,\u00a0causing\u00a0the\u00a0strip\u00a0to\u00a0break\u00a0under\u00a0the\u00a0action\u00a0of\u00a0traction.<\/li>\n<li>The\u00a0material\u00a0is\u00a0seriously\u00a0damp,\u00a0and\u00a0the\u00a0processed\u00a0water\u00a0vapor\u00a0is\u00a0not\u00a0discharged\u00a0by\u00a0natural\u00a0exhaust\u00a0and\u00a0vacuum\u00a0in\u00a0time,\u00a0and\u00a0is\u00a0trapped\u00a0in\u00a0the\u00a0strip,\u00a0resulting\u00a0in\u00a0broken\u00a0strip\u00a0under\u00a0the\u00a0action\u00a0of\u00a0traction.<\/li>\n<li>Natural\u00a0exhaust\u00a0or\u00a0poor\u00a0vacuum\u00a0exhaust\u00a0(including\u00a0blockage,\u00a0air\u00a0leakage,\u00a0gasket\u00a0too\u00a0much,\u00a0etc.)\u00a0causes\u00a0air\u00a0to\u00a0be\u00a0trapped\u00a0in\u00a0the\u00a0strip\u00a0and\u00a0cause\u00a0broken\u00a0strips\u00a0under\u00a0the\u00a0action\u00a0of\u00a0traction.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ol start=\"4\">\n<li><strong><b>The\u00a0filter\u00a0is\u00a0clogged<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Replace\u00a0the\u00a0filter<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ol start=\"5\">\n<li><strong><b>The\u00a0number\u00a0of\u00a0holes\u00a0in\u00a0the\u00a0die\u00a0is\u00a0incorrect<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Material\u00a0loss\u00a0balance,\u00a0you\u00a0can\u00a0plug\u00a0the\u00a0holes\u00a0on\u00a0both\u00a0sides,\u00a0or\u00a0replace\u00a0the\u00a0machine\u00a0head<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ol start=\"6\">\n<li><strong><b>No\u00a0multi-well\u00a0plates<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Due\u00a0to\u00a0melt\u00a0disturbances,\u00a0the\u00a0pressure\u00a0is\u00a0unstable,\u00a0resulting\u00a0in\u00a0broken\u00a0bars<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ol start=\"7\">\n<li><strong><b>The\u00a0extrusion\u00a0pressure\u00a0is\u00a0too\u00a0low<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>The\u00a0material\u00a0in\u00a0the\u00a0screw\u00a0is\u00a0not\u00a0full,\u00a0so\u00a0it\u00a0is\u00a0necessary\u00a0to\u00a0increase\u00a0the\u00a0feeding\u00a0frequency\u00a0and\u00a0increase\u00a0the\u00a0number\u00a0of\u00a0filter\u00a0meshes<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ol start=\"8\">\n<li><strong><b>Simplified\u00a0body,\u00a0screw\u00a0sleeve,\u00a0machine\u00a0head,\u00a0etc<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>There\u00a0is\u00a0too\u00a0much\u00a0regurgitation\u00a0in\u00a0the\u00a0extrusion\u00a0section,\u00a0and\u00a0the\u00a0pressure\u00a0of\u00a0the\u00a0discharge\u00a0hole\u00a0of\u00a0the\u00a0machine\u00a0head\u00a0is\u00a0uneven,\u00a0so\u00a0the\u00a0accessories\u00a0need\u00a0to\u00a0be\u00a0replaced<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ol start=\"9\">\n<li><strong><b>The\u00a0material\u00a0has\u00a0impurities,\u00a0miscellaneous\u00a0materials<\/b><\/strong><\/li>\n<\/ol>\n<ul>\n<li>Try\u00a0to\u00a0add\u00a0less\u00a0recycled\u00a0material\u00a0or\u00a0manually\u00a0screen\u00a0the\u00a0crushed\u00a0material\u00a0to\u00a0remove\u00a0impurities<\/li>\n<li>Increase\u00a0the\u00a0number\u00a0of\u00a0mesh\u00a0and\u00a0the\u00a0number\u00a0of\u00a0screens<\/li>\n<li>Check\u00a0whether\u00a0the\u00a0dead\u00a0corners\u00a0of\u00a0the\u00a0equipment\u00a0in\u00a0the\u00a0mixing\u00a0and\u00a0discharging\u00a0links\u00a0are\u00a0cleaned\u00a0or\u00a0impurities\u00a0are\u00a0mixed.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>After\u00a0investigating\u00a0of\u00a0the\u00a0above\u00a0factors,\u00a0do\u00a0you\u00a0find\u00a0the\u00a0reason\u00a0why\u00a0your\u00a0equipment\u00a0is\u00a0unstable\u00a0discharge\u00a0and\u00a0easy\u00a0to\u00a0break?<\/p>","protected":false},"excerpt":{"rendered":"<p>What\u00a0can\u00a0we\u00a0do\u00a0if\u00a0the\u00a0material\u00a0discharge\u00a0is\u00a0unstable\u00a0and\u00a0easy\u00a0to\u00a0break\u00a0up? &nbsp; There\u00a0are\u00a0many\u00a0factors\u00a0that\u00a0lead\u00a0to\u00a0material\u00a0discharge\u00a0unstablely\u00a0and\u00a0easy\u00a0break\u00a0up\u00a0from\u00a0corotating\u00a0parallel\u00a0twin\u00a0screw\u00a0granulator,\u00a0which\u00a0need\u00a0to\u00a0investigate\u00a0one\u00a0by\u00a0one,\u00a0we\u00a0list\u00a0the\u00a0common\u00a0reasons\u00a0in\u00a0the\u00a0following\u00a0for\u00a0your\u00a0reference: &nbsp; &nbsp; Unstable\u00a0feeding The\u00a0mixture\u00a0is\u00a0agglomerated\u00a0(including\u00a0high\u00a0temperature\u00a0agglomerated\u00a0or\u00a0agglomerated\u00a0by\u00a0adding\u00a0too\u00a0much\u00a0liquid\u00a0additives)\u00a0and\u00a0bridging\u00a0in\u00a0the\u00a0hopper. Too\u00a0much\u00a0powder,\u00a0moisture\u00a0absorption,\u00a0agglomeration,\u00a0resulting\u00a0in\u00a0increased\u00a0friction\u00a0between\u00a0the\u00a0mixture\u00a0and\u00a0the\u00a0hopper\u00a0wall,\u00a0and\u00a0a\u00a0bridge\u00a0is\u00a0built\u00a0in\u00a0the\u00a0hopper. There\u00a0is\u00a0hot\u00a0gas\u00a0in\u00a0the\u00a0barrel\u00a0that\u00a0arches\u00a0back\u00a0to\u00a0the\u00a0direction\u00a0of\u00a0the\u00a0feeding\u00a0port. \u200b Poor\u00a0plasticization\u00a0of\u00a0materials The\u00a0extrusion\u00a0temperature\u00a0is\u00a0low\u00a0or\u00a0the\u00a0screw\u00a0shear\u00a0is\u00a0too\u00a0weak,\u00a0the\u00a0material\u00a0is\u00a0not\u00a0fully\u00a0plasticized,\u00a0and\u00a0the\u00a0material\u00a0lumps\u00a0appear,\u00a0which\u00a0cause\u00a0broken\u00a0strips\u00a0under\u00a0the\u00a0action\u00a0of\u00a0gravity. There\u00a0are\u00a0low\u00a0melting\u00a0point\u00a0additives\u00a0in\u00a0the\u00a0formula,\u00a0which\u00a0cause\u00a0poor\u00a0plasticization\u00a0and\u00a0broken\u00a0strips\u00a0under\u00a0the\u00a0premise\u00a0of\u00a0weak\u00a0screw\u00a0shear\u00a0or\u00a0increased\u00a0gap\u00a0between\u00a0the\u00a0screw\u00a0and\u00a0the\u00a0barrel\u00a0and\u00a0weak\u00a0shear. &nbsp; Poor\u00a0exhaust\u00a0or\u00a0insufficient\u00a0vacuum The\u00a0processing\u00a0temperature\u00a0is\u00a0too\u00a0high\u00a0or\u00a0the\u00a0local\u00a0shear\u00a0of\u00a0the\u00a0screw\u00a0is\u00a0too\u00a0strong\u00a0or\u00a0the\u00a0screw\u00a0is\u00a0overheated,\u00a0resulting\u00a0in\u00a0the\u00a0decomposition\u00a0of\u00a0some\u00a0flame\u00a0retardants\u00a0and\u00a0other\u00a0additives,\u00a0releasing\u00a0gas,\u00a0and\u00a0the\u00a0vacuum\u00a0does\u00a0not\u00a0pump\u00a0out\u00a0the\u00a0gas\u00a0in\u00a0time,\u00a0and\u00a0the\u00a0gas\u00a0is\u00a0trapped\u00a0in\u00a0the\u00a0strip,\u00a0causing\u00a0the\u00a0strip\u00a0to\u00a0break\u00a0under\u00a0the\u00a0action\u00a0of\u00a0traction. The\u00a0material\u00a0is\u00a0seriously\u00a0damp,\u00a0and\u00a0the\u00a0processed\u00a0water\u00a0vapor\u00a0is\u00a0not\u00a0discharged\u00a0by\u00a0natural\u00a0exhaust\u00a0and\u00a0vacuum\u00a0in\u00a0time,\u00a0and\u00a0is\u00a0trapped\u00a0in\u00a0the\u00a0strip,\u00a0resulting\u00a0in\u00a0broken\u00a0strip\u00a0under\u00a0the\u00a0action\u00a0of\u00a0traction. Natural\u00a0exhaust\u00a0or\u00a0poor\u00a0vacuum\u00a0exhaust\u00a0(including\u00a0blockage,\u00a0air\u00a0leakage,\u00a0gasket\u00a0too\u00a0much,\u00a0etc.)\u00a0causes\u00a0air\u00a0to\u00a0be\u00a0trapped\u00a0in\u00a0the\u00a0strip\u00a0and\u00a0cause\u00a0broken\u00a0strips\u00a0under\u00a0the\u00a0action\u00a0of\u00a0traction. &nbsp; The\u00a0filter\u00a0is\u00a0clogged Replace\u00a0the\u00a0filter &nbsp; The\u00a0number\u00a0of\u00a0holes\u00a0in\u00a0the\u00a0die\u00a0is\u00a0incorrect Material\u00a0loss\u00a0balance,\u00a0you\u00a0can\u00a0plug\u00a0the\u00a0holes\u00a0on\u00a0both\u00a0sides,\u00a0or\u00a0replace\u00a0the\u00a0machine\u00a0head &nbsp; No\u00a0multi-well\u00a0plates Due\u00a0to\u00a0melt\u00a0disturbances,\u00a0the\u00a0pressure\u00a0is\u00a0unstable,\u00a0resulting\u00a0in\u00a0broken\u00a0bars &nbsp; The\u00a0extrusion\u00a0pressure\u00a0is\u00a0too\u00a0low The\u00a0material\u00a0in\u00a0the\u00a0screw\u00a0is\u00a0not\u00a0full,\u00a0so\u00a0it\u00a0is\u00a0necessary\u00a0to\u00a0increase\u00a0the\u00a0feeding\u00a0frequency\u00a0and\u00a0increase\u00a0the\u00a0number\u00a0of\u00a0filter\u00a0meshes &nbsp; Simplified\u00a0body,\u00a0screw\u00a0sleeve,\u00a0machine\u00a0head,\u00a0etc There\u00a0is\u00a0too\u00a0much\u00a0regurgitation\u00a0in\u00a0the\u00a0extrusion\u00a0section,\u00a0and\u00a0the\u00a0pressure\u00a0of\u00a0the\u00a0discharge\u00a0hole\u00a0of\u00a0the\u00a0machine\u00a0head\u00a0is\u00a0uneven,\u00a0so\u00a0the\u00a0accessories\u00a0need\u00a0to\u00a0be\u00a0replaced &nbsp; The\u00a0material\u00a0has\u00a0impurities,\u00a0miscellaneous\u00a0materials Try\u00a0to\u00a0add\u00a0less\u00a0recycled\u00a0material\u00a0or\u00a0manually\u00a0screen\u00a0the\u00a0crushed\u00a0material\u00a0to\u00a0remove\u00a0impurities Increase\u00a0the\u00a0number\u00a0of\u00a0mesh\u00a0and\u00a0the\u00a0number\u00a0of\u00a0screens Check\u00a0whether\u00a0the\u00a0dead\u00a0corners\u00a0of\u00a0the\u00a0equipment\u00a0in\u00a0the\u00a0mixing\u00a0and\u00a0discharging\u00a0links\u00a0are\u00a0cleaned\u00a0or\u00a0impurities\u00a0are\u00a0mixed. &nbsp; After\u00a0investigating\u00a0of\u00a0the\u00a0above\u00a0factors,\u00a0do\u00a0you\u00a0find\u00a0the\u00a0reason\u00a0why\u00a0your\u00a0equipment\u00a0is\u00a0unstable\u00a0discharge\u00a0and\u00a0easy\u00a0to\u00a0break?<\/p>","protected":false},"author":1,"featured_media":1555,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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