{"id":58,"date":"2011-12-08T15:35:00","date_gmt":"2011-12-08T15:35:00","guid":{"rendered":"http:\/\/sentryair.com\/blog\/?p=58"},"modified":"2013-01-31T14:51:45","modified_gmt":"2013-01-31T14:51:45","slug":"fume-control-for-conformal-coating-pcbs-ductless-spray-hoods","status":"publish","type":"post","link":"https:\/\/www.sentryair.com\/blog\/product-review\/fume-hoods\/ductless-fume-hood\/fume-control-for-conformal-coating-pcbs-ductless-spray-hoods\/","title":{"rendered":"Fume Control for Conformal Coating PCBs [Ductless Spray Hoods]"},"content":{"rendered":"<p><strong><span style=\"font-size: large;\"><a href=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2011\/12\/KonForm_Ductless-Spray-Hood.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1502 alignleft\" title=\"KonForm_Ductless-Spray-Hood\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2011\/12\/KonForm_Ductless-Spray-Hood-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2011\/12\/KonForm_Ductless-Spray-Hood-300x200.jpg 300w, https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2011\/12\/KonForm_Ductless-Spray-Hood-1024x685.jpg 1024w, https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2011\/12\/KonForm_Ductless-Spray-Hood-448x300.jpg 448w, https:\/\/www.sentryair.com\/blog\/wp-content\/uploads\/2011\/12\/KonForm_Ductless-Spray-Hood.jpg 1600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>Conformal Coating<\/span><\/strong><\/p>\n<p><strong><\/strong>A highly recommended last step in the manufacturing process of developing printed circuit boards (PCBs) is conformal coating. Conformal coating is a\u00a0protective film that is applied to\u00a0PCBs to protect them from a variety of naturally-occurring and man-made\u00a0environmental hazards, including moisture, chemicals, dust, corrosion, and extreme temperatures. This protective measure is especially important\u00a0for sensitive applications, such as aerospace technology, automotive manufacturing, and data communications.<\/p>\n<p>Conformal coating comes in a variety of material options, featured properties, and application methods. Types of conformal coating include Silicones, Acrylic, Epoxies, Polyurethanes, Paraxylylenes, and Fluorocarbon. They are also available in Solvent-Based, Water-Based, Solvent-less Silicones, and Solvent-less UV Curable options.<\/p>\n<p>There are a variety of application methods for coating PCB boards with this protective membrane. These include, but are not limited to:<\/p>\n<ul>\n<li><strong>Spray Applications<\/strong>&#8211; in which conformal coating is available in an aerosol can for direct application. Automated machinery is also available for spraying PCBs.<\/li>\n<li><strong>Dip Applications- <\/strong>This technique can be done by hand\u00a0or by automated equipment. PCBs are slowly submerged and removed from coating material.<\/li>\n<li><strong>Brush Applications<\/strong>&#8211; This method is typically done by hand by brushing on conformal coating from a pot.<\/li>\n<li><strong>Transfer Coating- <\/strong>To complete this method, operators fill a tool pot with coating and then place and attach the PCB to the top of the pot. Once the PCB is firmly attached, the entire unit is turned over so that the PCB becomes coated. The unit is then turned back over and the PCB is removed.<\/li>\n<\/ul>\n<p><strong><span style=\"font-size: large;\">The Hazards of Conformal Coating<\/span><\/strong><\/p>\n<div><\/div>\n<p>Because many popular conformal coatings contain large percentages of solvents, potential negative health effects should be considered when utilizing these materials. When personnel in this industry reach out to us with the need for fume extraction and air purification of conformal coating, one of the brands that is mentioned frequently is <a href=\"http:\/\/www.chemtronics.com\/products\/product.asp?r=1&amp;m=2&amp;id=38\" target=\"_blank\">Chemtronic&#8217;s KonForm\u00ae SR<\/a>.<\/p>\n<p>Whenever a new conformal coating is introduced into your working environment, the Material Safety Data Sheet (MSDS) for that individual product should be read over thoroughly. When trying to improve air quality and limit inhalation of fumes and vapors of these products, a few key areas to look at on the MSDS are the following [as an example, we will look at the <a href=\"http:\/\/www.hmcelectronics.com\/techdocs\/CTSR12-CTSR12MSDSPDF.pdf\" target=\"_blank\">Chemtronic&#8217;s KonForm\u00ae MSDS<\/a>\u00a0(PDF)]:<\/p>\n<div>Section 2 of this MSDS covers <strong>Composition\/Information on Ingredients:<\/strong><\/div>\n<div style=\"clear: both; text-align: center;\"><a style=\"margin-left: 1em; margin-right: 1em;\" href=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/KONFORM_MSDS_Ingredients1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/KONFORM_MSDS_Ingredients.jpg\" alt=\"\" width=\"400\" height=\"121\" border=\"0\" \/><\/a><\/div>\n<div>For Hazard Identification in relation to this product, take a look at Section 3, which provides an emergency overview and potential health effects via various routes of entry.<\/div>\n<p>&nbsp;<\/p>\n<div style=\"clear: both; text-align: center;\"><a style=\"margin-left: 1em; margin-right: 1em;\" href=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/KonForm_MSDS_HealthEffects1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/KonForm_MSDS_HealthEffects.jpg\" alt=\"\" width=\"400\" height=\"76\" border=\"0\" \/><\/a><\/div>\n<p>Because of the negative health effects that are possible by overexposure to many of these ingredients, exposure limits\u00a0have been established by various health and safety organizations. You can find these exposure guidelines in Section 8:<\/p>\n<table style=\"margin-left: auto; margin-right: auto; text-align: center;\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><a style=\"margin-left: auto; margin-right: auto;\" href=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/KonForm_MSDS_ExposureGuidelines1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/KonForm_MSDS_ExposureGuidelines.jpg\" alt=\"\" width=\"400\" height=\"117\" border=\"0\" \/><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">TLV: Threshold Limit Value, PEL: Permissible Exposure Limit, STEL: Short Term Exposure Limit<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>You will also find Exposure Controls and Personal Protection Recommendations in Section 8.<\/p>\n<p>As indicated above,<em> &#8220;Good general ventilation should be sufficient to control airborne levels. Local exhaust ventilation may be necessary to control any air contaminants to within their TLVs (threshold limit values) during the use of this product. If vapor concentration exceeds TLV, use NIOSH approved organic vapor cartridge respirator [&#8230;].&#8221;<\/em><\/p>\n<div><strong><span style=\"font-size: large;\">Local Exhaust Ventilation: Ductless Spray Booths<\/span><\/strong><\/div>\n<div>One example of local exhaust ventilation that can be used with conformal coating applications (especially spray applications) is a benchtop <a href=\"http:\/\/www.sentryair.com\/sprayboothapp.htm\" target=\"_blank\">Ductless Spray Booth<\/a>. Ductless Spray Booths provide a negative-pressure enclosure that pulls airborne contaminants away from the operator&#8217;s breathing zone. These systems are equipped with a powerful fan situated on top of the hood that draws aerosol particulate and fumes through a triple-stage filtration system consisting of an\u00a0internal spray filter, HEPA Filter [up to 99.97% efficient on particles 0.3 microns and larger], and Activated Carbon Filter. This multi-stage\u00a0configuration is able to capture the visible overspray, small respirable particles, and chemical fumes found in conformal coat spray\u00a0at a relatively high efficiency<\/div>\n<div><\/div>\n<div style=\"clear: both; text-align: center;\"><a style=\"margin-left: 1em; margin-right: 1em;\" href=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/DuctlessSprayHoodDiagram3.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/DuctlessSprayHoodDiagram2.jpg\" alt=\"\" width=\"320\" height=\"238\" border=\"0\" \/><\/a><\/div>\n<p>Sentry Air Systems offers <a href=\"http:\/\/www.sentryair.com\/specs\/330-Paint-Spray-Booth.htm\" target=\"_blank\">30&#8243;,<\/a> <a href=\"http:\/\/www.sentryair.com\/specs\/340-Paint-Spray-Booth.htm\" target=\"_blank\">40&#8243;,<\/a> <a href=\"http:\/\/www.sentryair.com\/specs\/350-Paint-Spray-Booth.htm\" target=\"_blank\">50&#8243;,<\/a> and 60&#8243; wide Ductless Spray Booths. <a href=\"http:\/\/www.sentryair.com\/customfumehoods.htm\" target=\"_blank\">Custom Spray Booths<\/a> are also available. <a href=\"http:\/\/sentryairsystems.blogspot.com\/2011\/10\/esd-safe-ductless-fume-hoods-exhaust.html\" target=\"_blank\">Custom Metal Spray Booths<\/a> are an additional option for applications that require ESD-hood material. ESD-safe trays [pictured below]\u00a0are also available for easy clean-up.<\/p>\n<table style=\"margin-left: auto; margin-right: auto; text-align: center;\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><a style=\"margin-left: auto; margin-right: auto;\" href=\"http:\/\/www.sentryair.com\/specs\/330-Paint-Spray-Booth.htm\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/DSC_2252.jpg\" alt=\"\" width=\"320\" height=\"214\" border=\"0\" \/><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><a href=\"http:\/\/www.sentryair.com\/specs\/330-Paint-Spray-Booth.htm\" target=\"_blank\">30&#8243; Wide Ductless Spray Booth<\/a> shown above<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"clear: both; text-align: center;\" align=\"center\"><a style=\"margin-left: 1em; margin-right: 1em;\" href=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/ConformalCoatinginSprayHood1.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/ConformalCoatinginSprayHood.jpg\" alt=\"\" width=\"320\" height=\"214\" border=\"0\" \/><\/a><\/div>\n<div style=\"text-align: center;\"><strong>Video Demonstration:<\/strong><\/div>\n<div style=\"text-align: center;\"><iframe loading=\"lazy\" src=\"http:\/\/www.youtube.com\/embed\/65ETCV_EeyU?rel=0\" frameborder=\"0\" width=\"420\" height=\"315\"><\/iframe><\/div>\n<div style=\"text-align: center;\"><\/div>\n<div style=\"text-align: center;\"><\/div>\n<div style=\"text-align: center;\"><span style=\"font-size: large;\"><strong>Want more information\u00a0on Ductless Spray Hoods for Conformal Coating Applications?<\/strong><\/span><\/div>\n<div style=\"clear: both; text-align: center;\"><\/div>\n<div style=\"clear: both; text-align: center;\">Sentry Air Systems&#8217; Applications Specialists are able to review your process and aid in finding the appropriate solution for your conformal coating fume controls needs.<\/div>\n<div style=\"clear: both; text-align: center;\"><\/div>\n<div style=\"clear: both; margin-left: 1em; margin-right: 1em; text-align: center;\"><img decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/ContactUs_Phone_SentryAir_1.800.799.4609.jpg\" alt=\"\" border=\"0\" \/><\/div>\n<div style=\"clear: both; text-align: center;\"><a href=\"mailto:sales@sentryair.com\" target=\"_blank\"><img decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/EmailUs_SentryAir_sales%40sentryair.jpg\" alt=\"\" border=\"0\" \/><\/a><\/div>\n<div style=\"clear: both; text-align: center;\"><a href=\"http:\/\/www.sentryair.com\/feedback-blog.htm\" target=\"_blank\"><img decoding=\"async\" src=\"http:\/\/sentryair.com\/blog\/wp-content\/uploads\/2012\/10\/RequestInformation_SentryAir.jpg\" alt=\"\" border=\"0\" \/><\/a><\/div>\n<p><a href=\"http:\/\/www.sentryair.com\/feedback-blog.htm\" target=\"_blank\"><br \/>\n<\/a><\/p>\n<div style=\"text-align: left;\"><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Conformal Coating A highly recommended last step in the manufacturing process of developing printed circuit boards (PCBs) is conformal coating. Conformal coating is a\u00a0protective film that is applied to\u00a0PCBs to protect them from a variety of naturally-occurring and man-made\u00a0environmental hazards, including moisture, chemicals, dust, corrosion, and extreme temperatures. This protective measure is especially important\u00a0for sensitive&#8230;  <a class=\"excerpt-read-more btn btn-primary\" style=\"display:block; color: #fff;  margin-top: 10px; max-width:120px;\" href=\"https:\/\/www.sentryair.com\/blog\/product-review\/fume-hoods\/ductless-fume-hood\/fume-control-for-conformal-coating-pcbs-ductless-spray-hoods\/\" title=\"Read Fume Control for Conformal Coating PCBs [Ductless Spray Hoods]\">Learn More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1186,84,1045],"tags":[],"class_list":["post-58","post","type-post","status-publish","format-standard","hentry","category-chemical-solvents","category-ductless-fume-hood","category-electronics-technology"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Fume Control for Conformal Coating PCBs [Ductless Spray Hoods] - Sentry Air Systems, Inc.<\/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:\/\/www.sentryair.com\/blog\/product-review\/fume-hoods\/ductless-fume-hood\/fume-control-for-conformal-coating-pcbs-ductless-spray-hoods\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fume Control for Conformal Coating PCBs [Ductless Spray Hoods] - Sentry Air Systems, Inc.\" \/>\n<meta property=\"og:description\" content=\"Conformal Coating A highly recommended last step in the manufacturing process of developing printed circuit boards (PCBs) is conformal coating. Conformal coating is a\u00a0protective film that is applied to\u00a0PCBs to protect them from a variety of naturally-occurring and man-made\u00a0environmental hazards, including moisture, chemicals, dust, corrosion, and extreme temperatures. This protective measure is especially important\u00a0for sensitive... 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