Manufacturing method and device of heat-sealed type grid tea leaf and coffee filter paper

Abstract

The invention relates to a manufacturing method of heat-sealed type grid tea leaf and coffee filter paper and a grid device of a circular net forming device of a paper-making machine for the manufacturing method. The device comprises a circular net cage, a grid forming net, a couch roller, a net cloth blanket, a cleaning cylinder and a frame, wherein the grid forming net is sheathed outside the circular net cage, ad the couch roller is matched with the circular net cage. The method comprises the following steps of: (a) enabling 20%-50% of softwood pulp and 50%-80% of polypropylene fiber short yarn to constitute hot-melt fiber pulp, and enabling the hot-melt fiber pulp to form a wet paper page with a heat sealing function in an oblique net forming device; and (b) enabling 0-60% of abaca and 40-100% of the softwood pulp to constitute long fiber pulp of natural fiber, forming the long fiber pulp of the natural fiber in the grid device of the circular net forming device of the paper-making machine and forming the wet paper page with grid lines. The device has the advantages of high strength, better heat sealing strength, higher air permeability and fast leaching speed, and is suitable for packaging bagged tea and coffee with large packaging capacity.

Description

technical field [0001] The invention relates to a manufacturing method of heat-sealed grid tea and coffee filter paper, and a grid device of a paper machine cylinder former used in the manufacturing method, belonging to the papermaking industry. Heat-sealed mesh filter paper is mainly used in tea and coffee packaging machines to produce various tea bags and coffee. Background technique [0002] The heat-sealed tea filter paper of the prior art is also suitable for packaging various tea bags for tea and coffee. Its disadvantage is that when the bag is packaged at more than 5g / bag, if the packaging strength needs to be ensured, the quantitative amount of the filter paper needs to be increased. However, the increase of the quantitative amount of filter paper will cause the air permeability, leaching rate and leaching speed to decrease, which cannot meet the ideal application effect of large packaging. [0003] For example, the Chinese patent specification whose publication num...

AI Technical Summary

Problems solved by technology

The preparation method of the double-sided heat-sealed filter paper made by the double-bag bag discloses the filter paper in the form of upper layer and lower layer composite paper, but this preparation method does not solve the problem between the quantitative increase of the filter paper and the reduction of its air permeability, leaching rate and leaching speed. contradiction

Images