发明人：
JOHANSEN, LOUISE TOSTI | SCHLICHTING, RAPHAEL | HADAR, RONEN | MIKKELSEN, RENÉ
技术问题语段：
The patent text describes a method for manufacturing toy building elements using an additive manufacturing technique. The technical problem addressed by the invention is to create toy building elements with improved dimensional precision, surface roughness, and visible appearance, by avoiding the separate addition of material in a filament extrusion-based additive manufacturing technique. The invention uses an additive manufacturing technique that involves photopolymerization or thermoplastic additive manufacturing, which involves adding new material on top of a substrate or previously solidified material in a layer-by-layer fashion.
技术功效语段：
The present invention relates to a method for manufacturing toy building elements using an additive manufacturing technique. The method involves using a specific additive manufacturing technique that allows for the production of toy building elements with improved dimensional precision, surface roughness, and visual appearance. The toy building elements can be made without using a filament extrusion-based additive manufacturing technique. The invention also includes the use of a specific additive manufacturing technique that allows for the production of toy building elements with complex geometries that are not visible to the naked eye. The toy building elements produced using the additive manufacturing technique have improved dimensional precision, surface roughness, and visual appearance.
权利要求：
CLAIMS
1. A method for the manufacture of a toy building element made of a polymeric material using an additive manufacturing technique in which the element is built in an additive fashion with the proviso that the toy building element is not built using an additive manufacturing technique involving filament extrusion-based additive manufacturing.
2. The method according to claim 1, wherein the additive manufacturing technique by which the element is built is either photopolymerization additive manufacturing or thermoplastic additive manufacturing, such as liquid-based additive manufacturing, toner-based additive manufacturing, powder-based additive manufacturing or granulate-based additive manufacturing.
3. The method according to any one of claims 1 or 2, wherein the additively manufactured toy building element has a surface roughness defined by having an arithmetical mean height of the profile (Ra) below 100 mΐti and a root mean square height of the profile (Rg) below 100 mΐti when measured according to ISO 4287: 1997.
4. An additively manufactured toy building element manufactured by the method according to any one of claims 1 to 3.
5. An additively manufactured toy building element made of a polymeric material and having a surface roughness defined by having an arithmetical mean height of the profile (Ra) below 100 mΐti and a root mean square height of the profile (Rg) below 100 mΐti when measured according to ISO 4287: 1997.
6. The toy building element according to claim 5 manufactured by the method according to any one of claims 1 or 2.
7. The toy building element according to any one of claims 4 or 6, wherein the element is made of a polymeric material comprising a photopolymer or a thermoplastic polymer.
8. The toy building element according to claim 7, wherein the photopolymer or the thermoplastic polymer is a bio-based polymer, a hybrid bio-based polymer, a petroleum-based polymer or a mixture of bio-based polymers and/or hybrid bio based polymers and/or petroleum-based polymers.
9. The toy building element according to any one of claims 7 or 8, wherein the photopolymer is selected from the group consisting of epoxy-based
photopolymers and acrylate-based photopolymers and mixtures thereof.
10. The toy building element according to any one of claims 7 or 8, wherein the thermoplastic polymer is selected from the group consisting of polyamide (PA), acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), polyethylene (PE), polypropylene (PP), polyethylene furanoate (PEF), polybutylene furanoate (PBF), polytrimethylene furandicarboxylate (PTF), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyethylene terephthalate glycol-modified (PETG), polyethylene terephthalate - isophthalic acid copolymer (PET-IPA), polyethylene terephthalate naphthalene (PETN), polybutyrate adipate terephthalate (PBAT), thermoplastic elastomer (TPE), thermoplastic polyurethane (TPU or TPE-U), polyamide-polyether elastomer (TPA), thermoplastic Styrene Elastomer (TPE-S or TPS), thermoplastic Polyester Elastomer (TPE, TPE-0 or TPO), polyolefin plastomers (POP), polyolefin elastomers (POE), olefin Block Copolymers (OBCs), ethylene Propylene Diene Monomer (EPDM), propylene-ethylene copolymers, modified Thermoplastic olefin (mTPO), styrene-ethylene-butylene-ethylene (SEBS), styrene butylene styrene (SBS), 5-hydroxyisophthalic acid (FIIPA), polycarbonate (PC), polyoxymethylene (POM), polyketone (PK) and cellulose acetate (CA) and mixtures thereof.
11. The toy building element according to any one of claims 4 to 10, wherein the element is made of a polymeric material that further comprises fillers and/or fibres.