Method of making a flat building component
AssigneeParat Technology Group GmbH
InventorsMaximilian Prinz, Tobias Schmid
Life of this patent
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Abstract
The invention relates to a method of making a thin construction element (10) in sandwich lightweight construction having a high-quality surface (26). Including the steps of deep drawing a substrate film, placing the deep-drawn film into a cavity of a die, introducing partially expanded particles onto the substrate, heating to completely expanded the particle foam, curing the expanded particle foam, and opening the die to remove the molded article.
Claims8
A method of making a thin construction element in sandwich lightweight construction and having a high-quality surface, the method comprising the following steps:
- a) providing a substrate film of PMMA or ABS having a thickness between 0.2 mm and 13 mm,
- b) deep-drawing the substrate film and placing the deep-drawn film into a cavity of a lower die part of a die such that bottom and side walls of the cavity are covered by the substrate film,
- c) providing granular starting material in the form of loose particles of an expandable particle foam,
- d) only partly expanding the particles outside the die,
- e) introducing the partly expanded particles into a the cavity of the lower die part on top of the deep-drawn substrate film in the cavity and fitting an upper die part to the lower die part to close the cavity on all sides,
- h) heating the lower part of the closed die with a heating device to a predetermined temperature with the cavity closed on all sides to conduct heat from the lower part through the substrate film to the partly expanded particles and thereby further expand the partly expanded particles into a completely expanded particle foam that bonds to the substrate film,
- i) curing the completely expanded particle foam in the closed die into a molded article, and
- j) opening the closed die and removing the molded article from the cavity of the die.
A method of making a thin construction element in sandwich lightweight construction and having a high-quality surface, the method comprising the following steps:
- a) providing a substrate film of PMMA or ABS having a thickness between 0.2 mm and 13 mm,
- b) deep-drawing the substrate film and placing the deep-drawn film into a cavity of a lower die part of a die with the substrate film such that a bottom wall and side walls of the lower die part are covered by the substrate film,
- c) providing granular starting material in the form of loose particles of an expandable particle foam,
- d) only partly expanding the particles outside the die,
- e) introducing the partly expanded particles into the cavity of the lower die part on top of the deep-drawn substrate film,
- h) heating parts of the die with the cavity being closed on all sides with a heating device to a predetermined temperature to further expand the partly expanded particles into a completely expanded particle foam that bonds to the substrate film, the further expansion of the partly expanded particles being triggered by the predetermined temperature of the die,
- i) curing the completely expanded particle foam to cure in the die into a molded article, and
- j) opening the die and removing the molded article from the cavity of the die.
Dependencies are inferred from the claim text.