{"version":"1.0","provider_name":"Bulldog Castors Blog","provider_url":"https:\/\/www.bulldogcastors.co.uk\/blog","title":"Polyurethane Casters \u2013 The Ultimate Material - Bulldog Castors Blog","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"BN9QqkBunR\"><a href=\"https:\/\/www.bulldogcastors.co.uk\/blog\/polyurethane-casters-ultimate-material\/\">Polyurethane Casters \u2013 The Ultimate Material<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.bulldogcastors.co.uk\/blog\/polyurethane-casters-ultimate-material\/embed\/#?secret=BN9QqkBunR\" width=\"600\" height=\"338\" title=\"&#8220;Polyurethane Casters \u2013 The Ultimate Material&#8221; &#8212; Bulldog Castors Blog\" data-secret=\"BN9QqkBunR\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";var e=!1,o=!1;if(l.querySelector)if(d.addEventListener)e=!0;if(d.wp=d.wp||{},!d.wp.receiveEmbedMessage)if(d.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var r,a,i,s=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),n=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),o=new RegExp(\"^https?:$\",\"i\"),c=0;c<n.length;c++)n[c].style.display=\"none\";for(c=0;c<s.length;c++)if(r=s[c],e.source===r.contentWindow){if(r.removeAttribute(\"style\"),\"height\"===t.message){if(1e3<(i=parseInt(t.value,10)))i=1e3;else if(~~i<200)i=200;r.height=i}if(\"link\"===t.message)if(a=l.createElement(\"a\"),i=l.createElement(\"a\"),a.href=r.getAttribute(\"src\"),i.href=t.value,o.test(i.protocol))if(i.host===a.host)if(l.activeElement===r)d.top.location.href=t.value}}},e)d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",t,!1),d.addEventListener(\"load\",t,!1);function t(){if(!o){o=!0;for(var e,t,r,a=-1!==navigator.appVersion.indexOf(\"MSIE 10\"),i=!!navigator.userAgent.match(\/Trident.*rv:11\\.\/),s=l.querySelectorAll(\"iframe.wp-embedded-content\"),n=0;n<s.length;n++){if(!(r=(t=s[n]).getAttribute(\"data-secret\")))r=Math.random().toString(36).substr(2,10),t.src+=\"#?secret=\"+r,t.setAttribute(\"data-secret\",r);if(a||i)(e=t.cloneNode(!0)).removeAttribute(\"security\"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:\"ready\",secret:r},\"*\")}}}}(window,document);\n<\/script>\n","thumbnail_url":"https:\/\/www.bulldogcastors.co.uk\/blog\/wp-content\/uploads\/RED-PVC-STP-PNG.png","thumbnail_width":609,"thumbnail_height":542,"description":"Polyurethane Casters &#8211; What is Polyurethane? Polyurethane Casters, commonly referred PU or PUR is a type of synthetic polymer resin. It has a relatively complex chemical composition, which broadly speaking is manufactured by reacting a Poloy (a type of alcohol) with a polymeric isocyanate, along with additions of catalysts and additives. Polyurethane can be used to manufacture various types of components, including Caster Wheels, in which two processing methods are generally use: Injection Moulding \u2013 If we relate this to the Caster Wheel, the polyurethane pellets are transferred through the screw mechanism of the injection machine which heats the materials to its melting point, at the same time mixing the compound to produce a uniform material.\u00a0 As the material comes to the end of the reciprocating screw mechanism, the material is injected into the cavity of a mould tool, which would be in the shape of the castors wheel.\u00a0 The material would then be left to cool and removed for finishing. Hot Pouring \u2013 This is a relatively simply and low set-up cost technique, whereby the Polyurethane is supplied in a 2 part liquid form, which is heated &amp; mixed and poured by hand into an open cavity of a mould.\u00a0 The benefit of this process is the tooling is extremely low cost and ideal for low production quantities. &nbsp; Polyurethane for Caster Wheels For many application, Polyurethane is the ideal material for a Caster Material.\u00a0 It is a relatively stiff polymer offering many of the properties of both Hard Caster Wheels and Soft Castor Wheels.\u00a0 These characteristics include: Hard Wearing Tire Shock and Abrasion Resistance High Load Capacity Non-Marking of Floor surfaces Resistant to many chemicals, oils and cleaning fluids Can be coloured for high aesthetic appearance &nbsp; Without Bulldog Castors Ltd website you will find a good selection of Polyurethane Casters, which can be found by following the following link:\u00a0www.bulldogcastors.co.uk\/polyurethane-casters Bulldog Castors Ltd &#8211; Making to World Go Round Subscribe to our Engineering News Letter"}