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公开(公告)号：US20240066787A1
公开(公告)日：2024-02-29
申请号：US18261684
申请日：2022-01-23
申请人： 3DNEXTECH S.R.L.
发明人： Andrea ARIENTI , Maurizio FOLLADOR , Luca NENCINI
CPC分类号： B29C59/002 , B29C59/02 , B29C59/04 , B29K2001/12
摘要： An apparatus and method for forming surface patterns on polymer articles made by additive manufacturing is disclosed. The apparatus includes a temporary surface softening station for the articles wherein vapors of a polymer softening substance are kept in contact with the surface of the articles for a prefixed time, and a pattern imprinting station for imprinting a pattern on the softened surface of the articles leaving the temporary surface softening station which includes means for pressure transferring the pattern on the article surface.
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2.发明公开公开(公告)号：US20240300196A1
公开(公告)日：2024-09-12
申请号：US18261683
申请日：2022-01-21
申请人： 3DNEXTECH S.R.L.
发明人： Andrea ARIENTI , Maurizio FOLLADOR , Luca NENCINI
CPC分类号： B29C71/0009 , B29C64/30 , B29C64/35 , B33Y30/00 , B33Y40/20 , B29K2077/00
摘要： An apparatus and method for surface finishing of articles made from a polyamide material and produced by additive manufacturing is disclosed. Articles are heated in a treatment chamber and brought into contact with the vapor of a process material, such as pure acetic acid, at an operating temperature few degrees above the boiling temperature of the process material and at a pressure above atmospheric pressure. The result is a transient softening of a surface layer and consequent material reflowing that smooths surface unevenness. Once the contact time between the vapor and the surface of the article has elapsed, pressure is quickly reduced to atmospheric pressure and the liquid and vapor present in the treatment chamber are sent to a process material recovery unit. Before removing the treated article, the treatment chamber is cooled, washed and dried.
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