{"id":114004,"date":"2025-04-13T10:19:52","date_gmt":"2025-04-13T06:49:52","guid":{"rendered":"https:\/\/polymervapooshesh.ir\/?p=114004"},"modified":"2025-04-15T11:45:04","modified_gmt":"2025-04-15T08:15:04","slug":"a-healthy-dose-of-precision-blending","status":"publish","type":"post","link":"https:\/\/polymervapooshesh.ir\/en\/a-healthy-dose-of-precision-blending\/","title":{"rendered":"A healthy dose of precision blending"},"content":{"rendered":"

Iranpolymer\/Baspar\u00a0 <\/em><\/strong>Wittmann\u2019s Gravimax blenders have significantly improved over the years, boasting numerous functions to ensure easy operation and consistently high-quality parts.<\/p>\n

They\u2019re available with various throughput rates and touchscreen control terminals, with all parameters being set and retrieved via the display. The ambiLED signal mounted on the front of the Gravimax visualises the appliance\u2019s status, allowing the operator to save the compound formulations together with the appropriate blending processes.<\/p>\n

These can be passed on to other appliances on the shop floor either by USB stick or by special\u00a0GraviLog<\/em>\u00a0software.<\/p>\n

Gravimax accuracy and repeatability<\/h2>\n

Gravimax\u2019s popularity with the UK\u2019s technical moulders is accuracy and repeatability, expressed via Wittmann\u2019s RTLS (Real Time Live Scale) weighing technology.<\/p>\n

RTLS is a metering process carried out in two steps, becoming more and more accurate until the target weight has been reached. After a rapid metering phase and before reaching the target weight, any residual quantity is added by several short \u2018fine\u2019 metering impulses. This way, any overdosing of ingredients is prevented.<\/p>\n

Gravimax also plays a key role in in-house polymer regrind and post-use recyclate (consumer or industrial). Whenever regrind is created during production (for example, from additional reject or start-up parts), the Gravimax responds accordingly by increasing the regrind fed in by a predetermined amount, reducing virgin material consumption to a minimum and saving cost.<\/p>\n

An OPC UA interface for automatic quality reporting is available on all Gravimax blenders, via which process data can be retrieved for each batch.<\/p>\n

Gravimax\u2019s dosing accuracy, repeatability and ease of use have taken it centre stage, according to Dr Stephen Pepper, Managing Director at Rugby Plastics. The technology has helped the company get its design and manufacturing over the line to win orders on multiple occasions.<\/p>\n

\u201cThe Gravimax is ideally suited to technical moulders such as ourselves,\u201d says Stephen. \u201cIt typically comes to the fore as part of a \u2018high-end\u2019 solution for demanding applications.\u201d<\/p>\n

A recent Rugby Plastics project to mould a bifold patio door component required that the right-angle elements of the component be made to 90 degrees exactly. \u201cAny deviation in angularity \u2013 however small,\u201d notes Stephen, \u201cwould make the rest of the door construction redundant.\u201d<\/p>\n

Without treatment, reinforcement or additives, many polymer-based components are typically subject to creep, shrink or relaxation after the ejection from the moulding process and the cooling thereafter.<\/p>\n

\u201cIn this case, we used three chambers of the four-chamber Gravimax,\u201d explains Steven. \u201cA base polymer, a regrind stream and a special inorganic material dosed at a sufficient %, so that its function minimises the natural tendency of the polymeric material to distort on cooling. By using this material combination with the Gravimax, we could fulfil the brief and mould the engineering components to a tolerance of less than 0.5 of a degree \u2013 fit for purpose.\u201d<\/p>\n

Another project \u2013 a manually operated hydraulic pump \u2013 involved moulding and assembling 19 separate components in various colours. In this case, the Gravimax could include virgin polypropylene, colour variants and 40 talc-filled additives to aid dimensional stability for the components to assemble perfectly.<\/p>\n

\u201cThe key with the Gravimax is that it helps guarantee production consistency and reproducibility\u201d, claims Stephen.<\/p>\n

Rugby Plastics Gravimax is part of an injection moulding business that currently deploys 25 machines from 15-750t in locking force with a maximum part weight of 4.8kg. The company has recently invested in\u00a0edge equipment and systems, including Wittmann 4.0 and Temi+ MES packages.<\/p>\n

interplasinsights<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Iranpolymer\/Baspar\u00a0 Wittmann\u2019s Gravimax blenders have significantly improved over the years, boasting numerous functions to ensure easy operation and consistently high-quality parts. They\u2019re available with various throughput rates and touchscreen control terminals, with all parameters being set and retrieved via the display. The ambiLED signal mounted on the front of the Gravimax visualises the appliance\u2019s status, …<\/p>\n","protected":false},"author":5,"featured_media":114005,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[31004,69],"tags":[930,61239],"class_list":["post-114004","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-featured","category-news-en","tag-injection-moulding","tag-polymeric-material"],"_links":{"self":[{"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/posts\/114004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/comments?post=114004"}],"version-history":[{"count":0,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/posts\/114004\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/media\/114005"}],"wp:attachment":[{"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/media?parent=114004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/categories?post=114004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/polymervapooshesh.ir\/en\/wp-json\/wp\/v2\/tags?post=114004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}