The Gray, Jack Comminuting patent (1993)

Pub. No.:    WO/1994/028233    International Application No.:    PCT/GB1994/001098 Publication Date: 08.12.1994 International Filing Date: 20.05.1994 Chapter 2 Demand Filed:    25.11.1994
IPC:	D01F 2/00 (2006.01), D21B 1/06 (2006.01)
Applicants:	COURTAULDS FIBRES (HOLDINGS) LIMITED [GB/GB]; 50 George Street, London W1A 2BB (GB)
Inventors:	GRAY, Gary, Edward, George; (GB). JACK, Iain, Richard; (GB)
Agent:	NEWBY, John, Ross; J.Y. & G.W. Johnson, Furnival House, 14-18 High Holborn, London WC1V 6DE (GB)
Priority Data:	08/066,544 24.05.1993 US
Title	(EN) IMPROVEMENT IN COMMINUTING WOOD PULP SHEETING (FR) AMELIORATIONS APPORTEES A LA REDUCTION EN POUDRE DE CARTONS DE PATE
Abstract:	(EN)Wood pulp sheeting used as feedstock in a cellulosic fibre production plant is comminuted by hooking laminated platelets of wood pulp from a pluri-layer web of such sheeting and agitating the platelets in a fan generating a conveying gas stream to delaminate the platelets and individually separate them into torn pieces of wood pulp sheeting.

This invention relates to a method of creating a comminuted feedstock for use in a processing plant and has particular, but not exclusive, reference to cellulose-based feedstock materials which may be used, inter alia, in the production of cellulosic material such as film, tube and fibres .

It is known to use wood fibres as a feedstock for a variety of different industrial processing plants. The wood fibres can be supplied to users in the form of rolls of wood pulp sheet material which may have to be broken down into small pieces as an initial stage in the process. This invention is concerned with the method of carrying out a breaking down of wood fibre sheet material to produce small pieces for subsequent processing.

Wood pulp is commonly supplied to end users in roll form, each roll being categorised with reference to at least one particular property of the sheet material, the end user selecting which roll to use for the creation of a feedstock on the basis of an assessment of the value of the particular properties assigned to the rolls that are currently available for use as feedstock. The invention has particular, but not exclusive, application to the situation where an eventual feedstock required for subsequent processing is created by mixing together small pieces removed from the sheet material drawn from^' a number of different rolls.