B - Operations – Transporting – 27 – N
Patent
B - Operations, Transporting
27
N
18/1120
B27N 5/00 (2006.01)
Patent
CA 1154926
ABSTRACT OF THE DISCLOSURE A method of molding a perforated article involves preforming a formable material including cellulose flakes im- pregnated with a binder prior to supplying it to a molding chamber. In particular the method comprises (a) supplying said formable material to an elongated preforming chamber form- ed between inner and outer sidewalls, said preforming chamber having a predetermined volume and cross-sectional shape; (b) maintaining said formable material in said preforming chamber for a sufficient time to permit said formable material to assume said cross-sectional shape of said preforming chamber; (c) transferring said formable material from said preforming chamber to a molding chamber, which has a volume less than said volume of said preforming chamber, at least a portion of said molding chamber having a cross-sectional shape substan- tially identical to said cross-sectional shape of said preform- ing chamber and corresponding to the cross-section of said perforated article; (d) compressing said formable material as it is being transferred from said preforming chamber to said molding chamber; and (e) maintaining said formable material in said molding chamber for a sufficient time to per- mit the formation of said article from said formable material.
393295
Ab Jonkoping-Vulcan Vetlanda Tandsticksfabrik
Marks & Clerk
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