发明名称 Pulp press molding method for making products from paper pulp from recycled paper
摘要 A method for recycling wood fiber products and particularly newspaper-type pulp, into a new and useful molded product is disclosed. A quantity of paper to be recycled is mixed with sufficient water to form a viscous pulp or slurry by beating the pulp to a desired consistency for a given texture of the product to be made. A pulp press is employed which has a molding chamber with interior sidewalls comprised of a rigid screen through which water can pass and a rigid plate outboard from the screen. The rigid plate has channels formed therein facing the screen through which channels water can flow. One of the sidewalls is movable into the molding chamber to serve as a piston. Some means to drive the movable sidewall, such as an hydraulic jack, completes the press. The beaten pulp is poured into the molding chamber. The chamber is then closed, and the press operated by moving the movable sidewall into the chamber to compress the beaten pulp to a desired pressure and pulp density. Water and air are forced out of the slurry through the screens and into the rigid plate channels to drain. The compressed pulp is then dried to thereby yield a new pulp paper product. In a preferred form, the foregoing method further includes the use of a template for making an image on the pulp product during compression.
申请公布号 US4994148(A) 申请公布日期 1991.02.19
申请号 US19890324263 申请日期 1989.03.14
申请人 SHETKA, STANLEY J. 发明人 SHETKA, STANLEY J.
分类号 D21J3/00 主分类号 D21J3/00
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