Composite structure with polyurethane layers, which is substantially free of volatile organic compounds
OwnerMartinus Johannes van den Berg, Rick Andreas Louis Janssen +5inventors
InventorsMartinus Johannes van den Berg, Rick Andreas Louis Janssen, Maarten Jaspers, Mark Dunning, Luuk Lambertus Christina Olijve, Stefan Willem Mommers, Wouter Godefridus Antonius Vermeulen
Life of this patent
Estimating the term…
Abstract
An embodiment of the present invention relates to a composite structure with one or several polyurethane layers, which is substantially free of volatile organic compounds (VOC). In addition, the invention relates to the method of manufacturing such composite structure. Further, the invention relates to the use of such composite structure, in particular as artificial leather.
Claims8
A method of producing a composite structure comprising a support layer, an adhesive layer, a pre-skin layer, and a skin layer, the method comprising the steps of
- a) coating a polyurethane dispersion, that is substantially free of volatile organic compounds, on a carrier to a thickness of about 0.05 to about 0.15 mm and drying to form the pre-skin layer;
- b) coating the pre-skin layer with a polyurethane composition that is substantially free of volatile organic compounds, subsequently heat curing at a temperature of about 150 to about 170° C. to form the skin layer;
- c) coating an adhesive, which is a polyurethane dispersion that is substantially free of volatile organic compounds, onto the skin layer to a thickness of about 0.01 to about 0.15 mm to form the adhesive layer, and then adhering the support layer to the adhesive layer followed by drying at about 60 to about 90° C. and curing at about 100 to about 130° C.;
- and
- d) peeling off the carrier to form the composite structure.
A method of producing a composite structure comprising a support layer, an adhesive layer, and a skin layer, the method comprising the steps of
- a) coating a carrier with a polyurethane composition, that is substantially free of volatile organic compounds, to a thickness of about 0.1 to about 0.4 mm, subsequently heat curing at a temperature of about 150 to about 170° C. to form the skin layer;
- b) coating an adhesive, which is a polyurethane dispersion that is substantially free of volatile organic compounds, onto the skin layer to a thickness of about 0.01 to about 0.15 mm to form the adhesive layer, and then adhering the support layer, followed by drying at about 60 to about 90° C. and curing at about 100 to about 130° C.;
- and
- c) peeling off the carrier to form the composite structure.
Dependencies are inferred from the claim text.