Patent ID: 7758724
Filing Date: 2010-07-20
Classification: B31F,D21H,Y10T

Abstract:
1. A process of producing water-disintegratable paper comprising the steps, in the following order, of: (i) producing a substantially water dispersible fibrous sheet containing at least one of a water soluble binder and a water swellable binder and having a basis weight of 30 to 150 g/m (ii) drying and storing the fibrous sheet in roll form, (iii) spraying water on the fibrous sheet, (iv) embossing the fibrous sheet in the presence of 10% to 200% by weight of water in the fibrous sheet with heated matched steel embossing rollers having elevations and recesses wherein a difference between the top of the elevations and the bottom of the recesses is 1 to 5 mm, and (v) drying the fibrous sheet simultaneously with or after the embossing; wherein the fibrous sheet after the embossing step has a number of protrusions and depressions.