{"id":3537,"date":"2020-07-07T09:36:16","date_gmt":"2020-07-07T08:36:16","guid":{"rendered":"https:\/\/arvitec.com\/en\/?p=3537"},"modified":"2020-07-16T14:28:02","modified_gmt":"2020-07-16T13:28:02","slug":"rikai-how-we-use-co-extrusion-post-coextrusion","status":"publish","type":"post","link":"https:\/\/arvitec.com\/en\/articles\/rikai-how-we-use-co-extrusion-post-coextrusion\/","title":{"rendered":"Rikai, How and why do we use Co-extrusion or post-co-extrusion?"},"content":{"rendered":"\n

In a time where manufacturing speed often takes precedence over quality, we ask ourselves, how can we make the urgent not make us forget the important?<\/strong><\/p>\n\n\n\n

“Rikai<\/strong>” is a word that is used in Japan to express “understanding”, understanding between the traditional and the modern, a concept that in Japan they have always known how to use very well.<\/p>\n\n\n\n

In the construction of dies and tools for extrusion<\/a> of technical profiles, this concept can help us to improve the extrusion process.<\/p>\n\n\n\n

As we all know, extrusion of thermoplastic profiles involves many factors that can hinder its process, from the complexity of a profile\u2019s design, its material, or the speed at which we want to manufacture it, to name just a few.<\/p>\n\n\n\n

That is why, in order to tackle these problems, we consider different techniques that combine the most traditional extrusion processes with the most innovative technical solutions when it comes to making tools for extrusion of thermoplastic profiles.<\/p>\n\n\n\n

When do we use co-extrusion?<\/strong><\/h4>\n\n\n\n

This plastic profile manufacturing technique consists of the union of two or more materials in the same part. These materials must have similar flow characteristics, must have compatible adhesion, and similar cooling and calibration.<\/p>\n\n\n\n

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Disadvantages of co-extrusion:<\/strong><\/h4>\n\n\n\n