B - Operations – Transporting – 27 – N
Patent
B - Operations, Transporting
27
N
18/1011
B27N 3/12 (2006.01) B27N 3/08 (2006.01)
Patent
CA 1310801
ABSTRACT OF THE DISCLOSURE The subject invention related to a novel press apparatus and method for steam pressing a mat of compressible material and an uncured thermosetting binder into a formed product and has particular application to the steam pressing of lignocellulosic material and a binder to form composite board. The novelty resides in making provision for projection means generally configured to the outline of the end product to be produced and which is carried by a press platen, preferably the upper press platen, and which is intended to impinge into the mat during its compression and to effect a steam pressure seal of the impingement area of the mat. As a pressure seal of the compressed mat is created about the mat edges, steam can then be built up in the mat in order to cure the binder. If desired, cool air can be passed through the mat after steaming to condense residual steam in the mat. The compressed mat after steaming, can also be subject to vacuum prior to releasing it from the press. The edges of the cured mat which have been subject to impingement, can subsequently be trimmed off.
596550
Fpinnovations
Na
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