Process for producing rigid cellulosic product
AssigneeHonext Material, Sl
InventorsSebel LEE YUN, Adrián ROMANÍ VÁZQUEZ, Sara ALONSO JIMÉNEZ
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Abstract
A process for producing rigid cellulosic product from raw fibrous industrial waste comprising the steps of (a) providing or producing pulped industrial waste cellulosic fibres derived from raw fibrous industrial waste, (b) enzymatically treating the pulped industrial waste cellulosic fibres to produce enzymatically treated industrial waste cellulosic fibres, maintaining the water content during enzyme treatment above 80%, (c) compressing the enzymatically treated industrial waste cellulosic fibres to produce compressed fibres, and (d) drying the compressed fibres to form a rigid cellulosic product.
Claims67
A process for producing rigid cellulosic product from raw fibrous industrial waste comprising the steps of:
- (a) providing or producing pulped industrial waste cellulosic fibres derived from raw fibrous industrial waste,
- (b) enzymatically treating the pulped industrial waste cellulosic fibres to produce enzymatically treated industrial waste cellulosic fibres, maintaining the water content during enzyme treatment above 80%,
- (c) compressing the enzymatically treated industrial waste cellulosic fibres to produce compressed fibres, and
- (d) drying the compressed fibres to form a rigid cellulosic product.
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A process for producing rigid cellulosic product from industrial waste fibres comprising the steps of:
- (a) providing industrial waste cellulosic fibres derived from raw fibrous industrial waste, preferably primary sludge from a paper production process,
- (b) enzymatically treating the industrial waste cellulosic fibres, maintaining the water content during the enzyme treatment above 80%,
- (c) providing non-industrial waste fibres, preferably waste cardboard,
- (d) enzymatically treating the non-industrial waste cellulosic fibres, maintaining the water content during pulping and enzyme treatment above 80%,
- (e) combining the enzymatically treated non-industrial waste cellulosic fibres with the enzymatically treated industrial waste cellulosic fibres,
- (f) compressing the combined enzymatically treated and industrial and non-industrial waste cellulosic fibres, and
- (g) drying the compressed industrial and non-industrial waste cellulosic fibres to form a rigid cellulosic product.
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A rigid cellulosic product comprising one or both of enzymatically treated industrial waste cellulosic fibres and enzymatically treated non-industrial waste cellulosic fibres.
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The rigid cellulosic product according to 54 comprising an aluminium hydroxide content of greater than 15 wt. % dry mass compared to the weight of the rigid cellulosic product so as to obtain a Class B fire classification when tested according to European Standard EN 13501-1.
Dependencies are inferred from the claim text.