{"id":15432,"date":"2026-09-20T04:08:03","date_gmt":"2026-09-20T04:08:03","guid":{"rendered":"https:\/\/www.fhopepack.com\/videos\/?p=15432"},"modified":"2026-10-04T11:52:28","modified_gmt":"2026-10-04T11:52:28","slug":"in-depth-engineering-evaluation-optimizing-tilting-dynamics-strapping-tension-and-film-stretch-ratios-for-ultra-thin-slit-coils","status":"publish","type":"post","link":"https:\/\/www.fhopepack.com\/videos\/in-depth-engineering-evaluation-optimizing-tilting-dynamics-strapping-tension-and-film-stretch-ratios-for-ultra-thin-slit-coils\/","title":{"rendered":"Slit Coil Strapping &#038; Wrapping Line"},"content":{"rendered":"<blockquote>\n<p><strong>Executive summary<\/strong>\nStrapping, wrapping and stacking slit coils on one line keeps narrow coils from being handled loose between stations.\nOur line in this video moves slit coils on roller conveyors, straps them with steel strap, wraps them in film and stacks the finished coils on a pallet.\nStrap length follows from the <strong>slit width<\/strong> and <strong>coil wall<\/strong>, and stack weight from the coils per stack.<\/p>\n<\/blockquote>\n<iframe loading=\"lazy\" width=\"1053\" height=\"592\" src=\"https:\/\/www.youtube.com\/embed\/LdIBX9rI6cc\" title=\"Automatic Slit Coil Handling, Strapping, Labeling, Wrapping &amp; Stacking Line\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<h2 id=\"table-of-contents\">Table of Contents<\/h2>\n<ul>\n<li><a href=\"#video\">What the video shows<\/a><\/li>\n<li><a href=\"#how-it-works\">How a coil goes through the line<\/a><\/li>\n<li><a href=\"#strap\">Strap length and stack weight<\/a><\/li>\n<li><a href=\"#safety\">Controls and safety<\/a><\/li>\n<li><a href=\"#selection-checklist\">Selection checklist for a slit coil strapping and wrapping line<\/a><\/li>\n<li><a href=\"#engineering-faq\">Engineering FAQ<\/a><\/li>\n<li><a href=\"#next-step\">Next step<\/a><\/li>\n<li><a href=\"#related-reading\">Related reading<\/a><\/li>\n<li><a href=\"#sources\">Sources<\/a><\/li>\n<\/ul>\n<h2 id=\"video\">What the video shows<\/h2>\n<p>Slit steel coils, eye horizontal, ride on roller conveyors and turntables between stations, with a yellow arm machine mounted over the line and operators at several stations.<\/p>\n<p>At the strapping station thin steel straps go round each coil. At the wrapping station clear film is laid round the coil. At the end of the line a stacking station places finished coils in a stack on a pallet. FHOPE markings appear on the line panels.<\/p>\n<h2 id=\"how-it-works\">How a coil goes through the line<\/h2>\n<p>Times are read from the video timestamps.<\/p>\n<table>\n<thead>\n<tr>\n<th>Step<\/th>\n<th>What happens<\/th>\n<th>Video time<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Handling<\/td>\n<td>Coils move on rollers and turntables between stations<\/td>\n<td>about 0\u201328 s<\/td>\n<\/tr>\n<tr>\n<td>Tinted film<\/td>\n<td>A coil enters a wrapping station and tinted film goes on<\/td>\n<td>about 30\u201340 s<\/td>\n<\/tr>\n<tr>\n<td>Strapping<\/td>\n<td>Steel straps are put round the coil<\/td>\n<td>about 42\u201366 s<\/td>\n<\/tr>\n<tr>\n<td>Film wrapping<\/td>\n<td>Clear film is laid round the coil<\/td>\n<td>about 68\u201390 s<\/td>\n<\/tr>\n<tr>\n<td>Stacking<\/td>\n<td>Finished coils are stacked on a pallet<\/td>\n<td>about 92\u201396 s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Each step runs at its own station, so the next coil can start while the last one is still being finished.<\/p>\n<h2 id=\"strap\">Strap length and stack weight<\/h2>\n<p>Illustrative example:<\/p>\n<table>\n<thead>\n<tr>\n<th>Item<\/th>\n<th>Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Slit width (illustrative)<\/td>\n<td>150 mm<\/td>\n<\/tr>\n<tr>\n<td>Outer and inner diameter (illustrative)<\/td>\n<td>1,000 and 508 mm<\/td>\n<\/tr>\n<tr>\n<td>Coil wall, (1,000 \u2212 508) \u00f7 2<\/td>\n<td>246 mm<\/td>\n<\/tr>\n<tr>\n<td>Eye-through strap, 2 \u00d7 150 + 2 \u00d7 246<\/td>\n<td>792 mm before seal overlap<\/td>\n<\/tr>\n<tr>\n<td>Coil weight (illustrative)<\/td>\n<td>686 kg<\/td>\n<\/tr>\n<tr>\n<td>Stack of 3, 3 \u00d7 686<\/td>\n<td>2,058 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The stack weight sets the pallet and stacker rating.<\/p>\n<h2 id=\"safety\">Controls and safety<\/h2>\n<p>Coils move on powered rollers, straps are tensioned round the coil and the stacker carries full coils. Keep people outside the stations while the line runs, and enter only with the line stopped and isolated.<\/p>\n<p>The standards that apply depend on the destination market. For CE markets, ISO 12100 sets the risk-assessment method and EN 415-10 sets general requirements for packaging machines.<\/p>\n<h2 id=\"selection-checklist\">Selection checklist for a slit coil strapping and wrapping line<\/h2>\n<ul>\n<li style=\"margin-left:-1.25em;list-style-type:none\"><input type=\"checkbox\" disabled=\"disabled\" \/> Slit width range and coil diameters.<\/li>\n<li style=\"margin-left:-1.25em;list-style-type:none\"><input type=\"checkbox\" disabled=\"disabled\" \/> Heaviest coil and coils per stack.<\/li>\n<li style=\"margin-left:-1.25em;list-style-type:none\"><input type=\"checkbox\" disabled=\"disabled\" \/> Strap material and straps per coil.<\/li>\n<li style=\"margin-left:-1.25em;list-style-type:none\"><input type=\"checkbox\" disabled=\"disabled\" \/> Film coverage.<\/li>\n<li style=\"margin-left:-1.25em;list-style-type:none\"><input type=\"checkbox\" disabled=\"disabled\" \/> Labelling needs.<\/li>\n<li style=\"margin-left:-1.25em;list-style-type:none\"><input type=\"checkbox\" disabled=\"disabled\" \/> Coils per shift.<\/li>\n<\/ul>\n<h2 id=\"engineering-faq\">Engineering FAQ<\/h2>\n<p>Q: What does the line do?\nA: It handles, straps, film-wraps and stacks slit coils at separate stations.<\/p>\n<p>Q: How long is an eye-through strap?\nA: 2 \u00d7 width + 2 \u00d7 wall: 2 \u00d7 150 + 2 \u00d7 246 mm gives 792 mm before seal overlap in our example.<\/p>\n<p>Q: What is the coil wall?\nA: Half the outer minus inner diameter: (1,000 \u2212 508) \u00f7 2 gives 246 mm.<\/p>\n<p>Q: How heavy is a stack?\nA: Coils per stack times coil weight: 3 \u00d7 686 kg gives 2,058 kg in our example.<\/p>\n<p>Q: Can the line take my slit widths?\nA: Send the width range and coil diameters and we lay out the stations to suit.<\/p>\n<h2 id=\"next-step\">Next step<\/h2>\n<p>We plan your slit coil strapping and wrapping line in three steps:<\/p>\n<ol>\n<li><strong>Submit your layout drawing<\/strong> with slit widths, diameters and weights to <strong>info@fhopepack.com<\/strong>.<\/li>\n<li><strong>Receive a proposal within 48 hours<\/strong>, with strap, film and stack plan.<\/li>\n<li><strong>Book a site survey<\/strong> to check coils per shift and floor space.<\/li>\n<\/ol>\n<h2 id=\"related-reading\">Related reading<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.fhopepack.com\/Automatic-Coil-Packing-Line\/\">Automatic coil packing line<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/slit-steel-coil-packaging-system\/\">Video: slit steel coil packaging system<\/a><\/li>\n<li><a href=\"https:\/\/www.fhopepack.com\/videos\/automatic-steel-coil-strapping-machine\/\">Video: automatic steel coil strapping machine<\/a><\/li>\n<\/ul>\n<h2 id=\"sources\">Sources<\/h2>\n<ul>\n<li>Line content: FHOPE engineering team, 2026-10-04<\/li>\n<li>Strap and stack examples: our worked examples, illustrative values<\/li>\n<li>Machine in action: <a href=\"https:\/\/www.youtube.com\/watch?v=LdIBX9rI6cc\">our video on YouTube<\/a><\/li>\n<li>Standards scope: <a href=\"https:\/\/www.iso.org\/standard\/51528.html\">ISO 12100:2010<\/a>, <a href=\"https:\/\/www.nen.nl\/en\/nen-en-415-10-2014-en-191845\">EN 415-10:2014<\/a><\/li>\n<\/ul>\n<p><strong>Last reviewed:<\/strong> 2026-10-04<\/p>","protected":false},"excerpt":{"rendered":"<p>Executive summary Strapping, wrapping and stacking slit coils on one line keeps narrow coils from being handled loose between stations. Our line in this video moves slit coils on roller conveyors, straps them with steel [&hellip;]<\/p>","protected":false},"author":4,"featured_media":14851,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Slit Coil Strapping, Wrapping and Stacking Line","_seopress_titles_desc":"How our slit coil line handles, straps, film-wraps and stacks narrow steel coils, with a worked example for eye-through strap length and stack 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