{"id":1401,"date":"2010-11-21T11:59:46","date_gmt":"2010-11-21T16:59:46","guid":{"rendered":"https:\/\/www.ulprospector.com\/knowledge\/?p=1401"},"modified":"2018-02-09T14:01:02","modified_gmt":"2018-02-09T20:01:02","slug":"pe-rtp_overmolding_grades","status":"publish","type":"post","link":"https:\/\/ulprospector.ul.com\/1401\/pe-rtp_overmolding_grades\/","title":{"rendered":"Optimal Overmolding Grades &#038; Substrate Considerations for Plastics"},"content":{"rendered":"<p>By <a href=\"http:\/\/www.rtpcompany.com\/\" target=\"_blank\">RTP Company<\/a><\/p>\n<p>Design engineers choose TPEs for improved ergonomics, enhanced grip performance, improved aesthetics, and critical impact protection. Applications that benefit from TPE overmolds range from consumer goods to medical instruments to industrial tools and can include knobs, handles, gaskets, seals and grips.<\/p>\n<p><strong>Benefits of Overmolding<\/strong><\/p>\n<p>With improvements in TPE materials technology, overmolded part designs have become less dependent on mechanical interlocks to hold a TPE in place.\u00a0 Chemical bonds between TPE and rigid materials offer improved part integrity and longevity while eliminating the need for adhesives or surface pre-treatments.\u00a0 System performance can be further optimized by including both chemical and mechanical bonds in the part design.\u00a0 The net benefit is greatly expanded design freedom.<\/p>\n<p><strong>Chemical bonds in Overmolding:<\/strong><\/p>\n<table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td width=\"31%\">\n<ul>\n<li>Improve product function<\/li>\n<li>Increase margins<\/li>\n<\/ul>\n<\/td>\n<td width=\"69%\">\n<ul>\n<li>Expand product differentiation<\/li>\n<li>Enable new design innovation<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Optimal Bonding Materials <\/strong><\/p>\n<p>Molders using multi-shot molding in combination with TPEs need to have a thorough understanding of bonding and how selection of both TPE and rigid substrates affect bond strength. RTP Company offers an expansive line of TPEs for bonding to specific engineering resins and assistance in selecting the ideal grades. The table below shows several examples:<\/p>\n<table border=\"0\" width=\"90%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td height=\"180\">\n<table id=\"config\" class=\"datasheet\" border=\"1\" summary=\"Display Configurations\" width=\"100%\" cellspacing=\"1\" align=\"center\">\n<tbody>\n<tr class=\"even\">\n<th width=\"20%\"><\/th>\n<th width=\"8%\">\n<div align=\"center\"><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/guide\/descriptions\/0600.htm?source=UL-IDES.com\" target=\"_blank\">ABS<\/a><\/strong><\/div>\n<\/th>\n<th width=\"8%\">\n<div align=\"center\"><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/guide\/descriptions\/0200A.htm?source=UL-IDES.com\" target=\"_blank\">PA\u00a06<\/a><\/strong><\/div>\n<\/th>\n<th width=\"8%\">\n<div align=\"center\"><strong>\u00a0<a href=\"http:\/\/www.rtpcompany.com\/info\/guide\/descriptions\/0300.htm?source=UL-IDES.com\" target=\"_blank\">PC<\/a>\u00a0<\/strong><\/div>\n<\/th>\n<th width=\"8%\">\n<div align=\"center\"><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/guide\/descriptions\/2500.htm?source=UL-IDES.com\" target=\"_blank\">PC\/ABS<\/a><\/strong><\/div>\n<\/th>\n<th width=\"8%\">\n<div align=\"center\"><strong>PBT\/PC<\/strong><\/div>\n<\/th>\n<th width=\"8%\">\n<div align=\"center\"><strong>PET\/PC<\/strong><\/div>\n<\/th>\n<th width=\"8%\">\n<div align=\"center\"><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/guide\/descriptions\/1800A.htm?source=UL-IDES.com\" target=\"_blank\">PC\/PMMA<\/a><\/strong><\/div>\n<\/th>\n<th width=\"8%\">\n<div align=\"center\"><strong>\u00a0<a href=\"http:\/\/www.rtpcompany.com\/info\/guide\/descriptions\/0100.htm?source=UL-IDES.com\" target=\"_blank\">PP<\/a><\/strong><\/div>\n<\/th>\n<td class=\"bigBodyBold\" width=\"8%\">\n<div align=\"center\"><strong>\u00a0<a href=\"http:\/\/www.rtpcompany.com\/info\/guide\/descriptions\/0400.htm?source=UL-IDES.com\" target=\"_blank\">PS<\/a><\/strong><\/div>\n<\/td>\n<td class=\"bigBodyBold\" width=\"8%\">\n<div align=\"center\"><strong>RTPU<\/strong><\/div>\n<\/td>\n<\/tr>\n<tr class=\"odd\">\n<td><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/data\/2700\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 2700 S<\/a><br \/>\n<a href=\"http:\/\/www.rtpcompany.com\/info\/data\/2700\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 2740 S<\/a><\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr class=\"even\">\n<td><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/data\/2800\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 2800 B<\/a><\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr class=\"odd\">\n<td><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/data\/2800\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 2899 X 106530<\/a><\/strong><\/td>\n<td><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr class=\"even\">\n<td><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/data\/6000\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 6002<\/a><\/strong><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td><\/td>\n<td><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<\/tr>\n<tr class=\"odd\">\n<td><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/data\/6000\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 6003<\/a><\/strong><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td><\/td>\n<td><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<\/tr>\n<tr class=\"even\">\n<td><strong><a href=\"http:\/\/www.rtpcompany.com\/info\/data\/6000\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 6035<\/a><\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td>\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www2.ulprospector.com\/images\/check.gif\" alt=\"\" width=\"16\" height=\"15\" border=\"0\" \/><\/div>\n<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span class=\"idesGrey\">* Checkmarks indicate combination exhibiting very good peel strength (15 pli or greater).<br \/>\n* For simplicity, this chart does not incorporate TPE hardness. Typical hardnesses range from 45-75 Shore A, but my be customized to each application.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>By offering multiple material options in combination with a variety of substrates, RTP Company&#8217;s TPE offering can meet a wide variety of applications where bonding to a rigid substrate is required. RTP Company can also offer modified rigid substrates to expand the material options to designers and engineers and make possible demanding applications that otherwise may not have been possible.<\/p>\n<p><strong>Case Study<\/strong><\/p>\n<p class=\"idesGrey\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-1402\" src=\"https:\/\/ulprospector.ul.com\/media\/2010\/11\/rtp_overmold.gif\" alt=\"rtp_overmold\" width=\"137\" height=\"100\" \/>Insulet Corporation combined an <a class=\"tiny\" href=\"http:\/\/www.rtpcompany.com\/info\/data\/6000\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 6002 Series TPE<\/a> and an <a class=\"tiny\" href=\"http:\/\/www.rtpcompany.com\/info\/data\/0300\/index.htm?source=UL-IDES.com\" target=\"_blank\">RTP 300 Series polycarbonate (PC)<\/a> in the housing of its award-winning OmniPod insulin management system.\u00a0 The TPE gasket created a water-tight seal for the housing.\u00a0 It also matched the precolored translucent white substrate perfectly so that the two components created the illusion of one part.<\/p>\n<p class=\"idesGrey\">View the case study <a class=\"tiny\" href=\"http:\/\/www.rtpcompany.com\/news\/clines\/2006\/jul\/insulin.htm?source=UL-IDES.com\" target=\"_blank\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>By RTP Company Design engineers choose TPEs for improved ergonomics, enhanced grip performance, improved aesthetics, and critical impact protection. Applications that benefit from TPE overmolds range from consumer goods to medical instruments to industrial tools and can include knobs, handles, &hellip; <a href=\"https:\/\/ulprospector.ul.com\/1401\/pe-rtp_overmolding_grades\/\">Continued<\/a><\/p>\n","protected":false},"author":20,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"episode_type":"","audio_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","footnotes":""},"categories":[27,21],"tags":[45,274],"ppma_author":[1237],"class_list":{"0":"post-1401","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-design","7":"category-plastics-2","8":"tag-rtp-company","9":"tag-design","10":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Optimal Overmolding Grades &amp; Substrate Considerations for Plastics - Prospector Knowledge Center<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ulprospector.ul.com\/1401\/pe-rtp_overmolding_grades\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Optimal Overmolding Grades &amp; Substrate Considerations for Plastics - Prospector Knowledge Center\" \/>\n<meta property=\"og:description\" content=\"By RTP Company Design engineers choose TPEs for improved ergonomics, enhanced grip performance, improved aesthetics, and critical impact protection. 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