专利详情

Porous body, additive manufacturing method for the body and apparatus for supporting and/or bearing a person

公开(公告)号：

EP3512379B1

公开(公告)日：

2020-10-21

申请号：

EP2017761542

申请日：

2017-09-08

授权日：

2020-10-21

受理局：

欧洲专利局

专利类型：

授权发明

简单法律状态：

有效

法律状态/事件：

授权 | 权利转移 | 异议

IPC分类号：

A47C23/00 | B29C67/00

战略新兴产业分类：

国民经济行业分类号：

C2190 | C2043 | C2042

当前申请(专利权)人：

STRATASYS, INC.

原始申请(专利权)人：

COVESTRO DEUTSCHLAND AG

当前申请(专利权)人地址：

工商统一社会信用代码：

工商登记状态：

工商注册地址：

工商成立日期：

1988

工商企业类型：

发明人：

代理机构：

LEVPAT

代理人：

摘要：

It is a feature of a porous body (10, 20) comprising a three-dimensional network of node points (200) joined to one another by struts (100), and a void volume (300) present between the struts (100), that the struts (100) have an average length of ≥ 200 μm to ≤ 50 mm, the struts (100) have an average thickness of ≥ 100 μm to ≤ 5 mm, and that the porous body has a compression hardness (40% compression, DIN EN ISO 3386-1 : 2010-09) in at least one spatial direction of ≥ 10 to ≤ 100 kPa. The porous body according to the invention combines the advantages of a conventional mattress or cushion with ventilatability which results from its porous structure and is not achievable in conventional foams. The invention further relates to a method of producing such a porous body (10, 20) and to an apparatus comprising said body (10, 20) for supporting and/or bearing a person.

技术问题语段：

The patent text describes a new type of porous body that can be used as a supporting and bearing element, such as a mattress or cushion. The body has a network of nodes connected by struts, and a void volume between the struts. The technical problem addressed by the patent is the need for a mattress or cushion that allows for better air exchange and heat removal, as well as providing varying degrees of elasticity in different regions of the body-supporting element. The patent also describes methods for producing these new types of porous bodies using 3D printing technology.

技术功效语段：

The invention is a porous body that can be used as a supporting or bearing element with improved comfort. The body has viscoelastic properties, meaning it can change its shape and size when exposed to heat or cold. By heating or cooling the air, the body can make the user more comfortable. This enhancement of comfort can be particularly useful in situations where the user needs to support or bear weight, such as walking or running.

权利要求：

1. Porous body (10, 20) comprising a three-dimensional network of node points (200) joined to one another by struts (100), and a void volume (300) present between the struts (100), the struts (100) having an average length of ≥ 200 µm to ≤ 50 mm, the struts (100) having an average thickness of ≥ 100 µm to ≤ 5 mm, and the body having a compression hardness (40% compression, DIN EN ISO 3386-1: 2010-09) in at least one spatial direction of ≥ 10 to ≤ 100 kPa. 2. Porous body (10, 20) according to Claim 1, wherein the body has a compression set after 40% compression (DIN ISO 815-1) of ≤ 5%. 3. Porous body (10, 20) according to Claim 1 or 2, wherein the body has a tan δ value (20°C, DMA, DIN EN ISO 6721) in at least one spatial direction of ≥ 0.1 to ≤ 1.5 and/or the body has a maximum tan δ value (DMA, DIN EN ISO 6721) in at least one spatial direction at ≥ -10°C to ≤ 40°C. 4. Porous body (10, 20) according to any of Claims 1 to 3, wherein the compression hardness (40% compression, DIN EN ISO 3386-1:2010-09) of the body in a selected spatial direction differs by ≥ 10% from the compression hardness (40% compression, DIN EN ISO 3386-1:2010-09) of the body in a spatial direction at right angles to the spatial direction selected, and/or the tan δ value (20°C, DMA, DIN EN ISO 6721) of the body in a selected spatial direction differs by ≥ 10% from the tan δ value (20°C, DMA, DIN EN ISO 6721) of the body in a spatial direction at right angles to the spatial direction selected. 5. Porous body (10, 20) according to any of Claims 1 to 3, wherein the compression hardness (40% compression, DIN EN ISO 3386-1:2010-09) of the body in a selected spatial direction differs by < 10% from the compression hardness (40% compression, DIN EN ISO 3386-1:2010-09) of the body in other spatial directions and/or the tan δ value (20°C, DMA, DIN EN ISO 6721) of the body in a selected spatial direction differs by < 10% from the tan δ value (20°C, DMA, DIN EN ISO 6721) of the body in other spatial directions. 6. Porous body (10, 20) according to any of Claims 1 to 5, wherein the body is at least partly formed from a material having one or more of the following properties: - a tan δ value (20°C, DMA, DIN EN ISO 6721) of ≥ 0.1 to ≤ 1.5 - a maximum tan δ value (DMA, DIN EN ISO 6721) at ≥ -10°C to ≤ 40°C - a modulus of elasticity (DIN EN ISO 604:2003-12) of ≥ 1 MPa to ≤ 800 MPa - a Shore hardness (DIN ISO 7619-1:2012-02) of ≥ 40A to ≤ 70D - a melting point (DIN EN ISO 11357-3:2013-04) of ≤ 220°C - a glass transition temperature Tg (DMA, DIN EN ISO 6721) of ≤ 40°C. 7. Porous body (10, 20) according to any of Claims 1 to 6, wherein the void volume (300) makes up ≥ 50% to ≤ 99% of the volume of the body (10, 20). 8. Porous body (10, 20) according to any of Claims 1 to 7, wherein the node points (200) are distributed in a periodically repeating manner in at least part of the volume of the body (10, 20). 9. Porous body (10, 20) according to any of Claims 1 to 8, wherein the void volume (300) is formed in the form of mutually penetrating first (310), second (320) and third (330) groups of channels, wherein a multitude of individual channels (311, 321, 331) within each respective group of channels run parallel to one another and the first group of channels (310), the second group of channels (320) and the third group of channels (330) extend in different spatial directions. 10. Porous body (10, 20) according to any of Claims 1 to 9, wherein the average minimum angle between adjacent struts (100) is ≥ 30° to ≤ 140°. 11. Porous body (20) according to any of Claims 1 to 10, wherein the spatial density of the node points (200) in a first region of the body (10, 20) is different from the spatial density of the node points (200) in a second region of the body (10, 20). 12. Porous body (10, 20) according to any of Claims 1 to 11, wherein the material of the body (10, 20) in a first region of the body (10, 20) is different from the material in a second region of the body (10, 20). 13. Method of producing a porous body (10, 20) according to any of Claims 1 to 12, characterized in that the body (10, 20) is produced in an additive manufacturing method. 14. Apparatus for supporting and/or bearing a person, comprising a porous body (10, 20) according to any of Claims 1 to 11. 15. Apparatus according to Claim 14, further comprising a ventilator for passing air through at least a portion of the porous body (10, 20).

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