Patent ID: 6508422
Filing Date: 2003-01-21
Classification: D21B

Abstract:
A pulper for pulping a fiber source, comprising:a tank having a plurality of annular-shaped inner walls defining a chamber, said plurality of walls including a first wall, second wall, third wall and fourth wall which are sequentially vertically adjoining relative to each other, each of said walls being disposed at an angle relative to a vertical reference, said first wall being disposed at an angle of between 45Â° and 70Â° relative to said vertical reference, said second wall being disposed at an angle of between 20Â° and 45Â° relative to said vertical reference, said third wall being disposed generally parallel to said vertical reference, and said fourth wall being disposed at an angle of between 10Â° and 30Â° relative to said vertical reference, said tank further including at least two baffles within said chamber for inhibiting rotational movement of the fiber source within said chamber; and a rotor disposed within said chamber.