Sandwiched paper preparation method

Abstract

The present invention discloses a sandwiched paper preparation method. The method comprises the processes of wood pulp film preparation and binding. The process of wood pulp film preparation includes the steps that: 1) a film plate is laid at the upper end of a film making box, a plurality of vertical carding needles penetrate through the film plate, the carding needles are slidably connected with the film plate, an electrostatic generator is arranged at the lower ends of the carding needles and is connected with the lower ends of the carding needles, paper pulp prepared from wood pulp flows through the film plate on the film making box, and at the same time the electrostatic generator under the carding needles in midstream and downstream of the flow is activated; and 2) the film plate in the film making box is taken out and dried, so that an upper layer wood pulp film, a middle layer waste paper pulp film and a lower layer wood pulp film are prepared . The process of binding includes the steps that: 1) a lower adhesive layer is applied to the lower wood pulp film, the middle layer waste paper pulp film is laid on the lower adhesive layer, then an upper adhesive layer is applied to the middle layer waste paper pulp film, then the upper layer wood pulp film is laid on the upper adhesive layer, and the finished product is obtained after the material is dried. Technical problem to be solved is to provide a sandwiched paper with a thickness meets the existing thickness requirements of papers and provide an environmentally protective sandwiched paper preparation method.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a method for making sandwich paper. Background technique [0002] Paper is an important invention of the working people of the Han nationality in ancient times. In ancient times, ancestors mainly relied on knotting to record events, and then gradually invented characters, and began to use oracle bones as writing materials, and later discovered and used bamboo chips, wood chips, and silk as writing materials. However, because silk was too expensive and bamboo chips were too bulky, paper was produced. One of the four great inventions in ancient China, papermaking, together with the compass, gunpowder, and printing, provided a material and technological foundation for the prosperity of ancient Chinese culture. The invention of paper ended the complicated history of bamboo slips and slips in ancient times, and greatly promoted the spread and development of culture. Papermaking is the cr...

AI Technical Summary

Problems solved by technology

But the cost of processing is high, so the inventor invented a method that can mix waste paper pulp with new wood pulp to make paper, that is, the center layer is an inner core layer made of waste paper pulp, and the outer layer is made of waste paper pulp. It is the outer layer made of wood pulp, but if it is made by the existing method of making paper, since the thickness of the paper is only between 0.065-0.52mm, it is already very thin, so it is made into a three-layer superimposed paper, the thickness of each layer of paper is required to be less than 0.02mm, and the existing spreading process cannot reach this level, so the thickness of the prepared sandwich paper is too thick, and the raw material solution of wood pulp is not used less, Did not play a role in the use of waste paper

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