Gypsum board coating, gypsum board and cardboard-coated gypsum board production method
AssigneeWalki Group Oy
InventorJuhani Peuramäki
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Abstract
This invention relates to a gypsum board coating comprising cardboard with a water-repellent treatment, containing a treatment agent which prevents the growth of micro-organisms. This invention also relates to a gypsum board comprising such a coating and a method for producing the cardboard-coated gypsum board.
Claims12
A coating for board containing gypsum, which comprises cardboard treated to be water-repellent, wherein the cardboard contains 2-4 g/m2 of a treatment agent which prevents the growth of micro-organisms, wherein said treatment agent is benzoic acid salt.
A gypsum board, which comprises a board containing gypsum, and a cardboard coating treated to be water-repellent and attached to the board containing gypsum, wherein the cardboard coating contains 2-4 g/m2 of a treatment agent which prevents the growth of micro-organisms, wherein said treatment agent is benzoic acid salt.
A gypsum board laminate comprising:
- a gypsum board which includes gypsum and the board having two surfaces;
- a cardboard surface board having a first and second surface, the first surface of the cardboard coated with from 2 to 4 g/m2 of benzoic acid salt which provides a benzoic acid salt coating surface, the benzoic acid coating surface having an overcoating of a waxy polymer which extends into the cardboard surface;
- and
- a connecting layer between one of the surfaces of the gypsum board and the second surface of the cardboard surface board, the connecting layer binding the cardboard to the gypsum board.
A method for the production of cardboard-coated gypsum board, wherein:
- the cardboard, which has a first side and a second side, is treated firstly on its first side with an antimicrobial agent, after which
- the cardboard is treated on its first side with a polymer compound containing waxy polymers, and
- the cardboard's second side is attached as a coating to a board containing gypsum.
Dependencies are inferred from the claim text.