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CN-122008610-A - Method for manufacturing embossing platen roller, platen roller and paper forming equipment

CN122008610ACN 122008610 ACN122008610 ACN 122008610ACN-122008610-A

Abstract

The invention discloses a method for manufacturing a concave-convex embossing paper pressing roller, which comprises the following steps of S1, manufacturing concave patterns on a round upper pressing roller, and covering the surface of the concave patterns with a hard anti-sticking layer. S2, the round lower press roller is a flat roller, and the upper press roller and the lower press roller are erected on the forming equipment and are clung to each other. S3, starting equipment enables the upper press roller and the lower press roller to start to operate and synchronously rotate. S4, coating diluted quick-drying resin on the upper pressing roller while rotating the two rollers. S5, using the rotation movement of the two rollers to transfer the quick-drying resin on the upper press roller to the surface of the lower press roller, after the coating is stopped, the two rollers continuously rotate, and after the quick-drying resin is solidified and dried, the convex patterns corresponding to the concave patterns of the upper press roller are formed on the surface of the lower press roller. The transfer and shaping of the quick-drying resin are realized, the shaping is simple and convenient, only the concave roller needs to be replaced, the convex roller is instantly manufactured through the concave roller, the manufacturing time is short, and the cost is low.

Inventors

  • LI QIANG
  • GUO ZHENYU

Assignees

  • 东莞海辉纸业有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. A method of manufacturing an embossing calender roll, characterized by: s1, manufacturing concave patterns on a round upper press roller, and covering a hard anti-sticking layer on the surface of the concave patterns. S2, the round lower press roller is a flat roller, and the upper press roller and the lower press roller are erected on the forming equipment and are clung to each other. S3, starting equipment enables the upper press roller and the lower press roller to start to operate and synchronously rotate. S4, coating diluted quick-drying resin on the upper pressing roller while rotating the two rollers. S5, using the rotation movement of the two rollers to transfer the quick-drying resin on the upper press roller to the surface of the lower press roller, after the coating is stopped, the two rollers continuously rotate, and after the quick-drying resin is solidified and dried, the convex patterns corresponding to the concave patterns of the upper press roller are formed on the surface of the lower press roller.
  2. 2. The method of manufacturing an embossing calender roll as defined in claim 1, wherein the anti-sticking layer in S1 is a chrome-plated layer or a teflon layer.
  3. 3. The method of manufacturing an embossing calender roll as claimed in claim 1, wherein the coating time is 5 to 8 minutes in S4, the two rolls are continuously rotated during the coating, and the upper calender roll rotation speed is 15 to 30 meters per minute.
  4. 4. The method of manufacturing an embossing calender roll according to claim 1, wherein the quick-drying resin in S4 is an aqueous acrylic resin or an aqueous epoxy resin or an aqueous polyurethane or an aqueous silicone-acrylate resin, the diluent is water, or the quick-drying resin is an alcohol-soluble acrylic resin, the diluent is ethanol or propylene glycol methyl ether or butyl acetate, or a combination of two or a combination of three.
  5. 5. The method of manufacturing an embossing calender roll defined in claim 4, wherein the ratio of the quick-drying resin to the diluent is between 4:1 and 2:1.
  6. 6. The method of manufacturing an embossing calender roll as claimed in claim 1, wherein in S5, both rolls continue to rotate for 10-15 minutes after the coating is terminated.
  7. 7. The platen roller manufactured by the method of manufacturing an embossing platen roller according to any one of claims 1 to 6, wherein the ratio of diameters of the upper platen roller and the lower platen roller is 1:n, n being a positive integer.
  8. 8. The platen roller according to claim 7, wherein the upper pinch roller is a steel roller, the lower pinch roller is a rubber roller, the hardness of the rubber roller is 70-80 a, and a primer is pre-coated on the rubber roller.
  9. 9. The platen roller of claim 8, wherein the primer is a modified acrylate glue or an alpha-cyanoacrylate glue.
  10. 10. The paper forming device using the platen roller according to claim 9, comprising a frame, an upper press roller and a lower press roller which are arranged on the frame, a gear set and a motor, wherein the upper press roller and the lower press roller are tightly attached, the pressure between the two rollers is 8-12 kg/square cm, the gear set is driven by the motor to further drive the upper press roller and the lower press roller to rotate simultaneously at the same rotation speed, and the special paper passes between the two rollers.

Description

Method for manufacturing embossing platen roller, platen roller and paper forming equipment Technical Field The invention relates to the technical field of paper production, in particular to a method for manufacturing an embossing paper pressing roller, the paper pressing roller and a technical scheme of paper forming equipment. Background In the fields of high-grade packaging, decorative paper and special printing, it is necessary to treat the surface of paper to increase the touch feeling because of special demands. At present, two main types of treatment methods are mainly classified, namely ink treatment and embossing treatment. The ink treatment means adding coarser particles (quartz particles) in the ink and mixing, then coating the surface of the paper, and after the ink is solidified, the particles are attached to the surface of the paper and locked by the ink. Representative of such touch papers are sandpaper (with a fine, coarse feel, even and finely distributed). The embossing treatment is to extrude by two pressure rollers, and the pressure rollers adopt an etching process to enable the surface of the rollers to generate uneven grains. The paper passing through the middle of the pressure roller is extruded, so that uneven patterns can be left on the surface of the paper, and further, hand feeling is generated, typically crocodile paper is pressed out of the surface of the paper, and crocodile-shaped patterns (larger textures and more attractive patterns are formed on the surface of the paper to replace leather products). In the technical scheme of two kinds of surface treatment, the technical key development direction in the field is always to embossing treatment, because the difficulty is great, the product profit is high, and the line is stable, can not lead to the sense of touch to lose because of printing ink quality or ageing problem. The object of the present invention is also to develop around embossing techniques. At present, embossing technology is commonly used for embossing a single surface of paper, namely, only one surface of two pressure rollers is etched with grains, the surface of the other roller is smooth, so that when the paper passes between the two rollers, grains are left on one surface of the paper, and the other surface is smooth. And the production cost is low, the process is simple, and the method is the most common production method in the manufacturing and printing industry of the special paper at present. However, the single-sided paper can only be used for manufacturing shallow-grain paper, and if the pattern is required to be deep, quality problems can occur, and the deeper the pattern is, the easier the cutting effect is formed, so that the product is out of function. Because the principle of the manufacturing process is to squeeze the paper by using the pressure generated by the two pressure rollers, the paper has different depth touch feeling at the grain, if the grain is deeper, the paper is damaged, because the grammage of the special paper is generally 0.02-0.07 g/square centimeter (converted into the conventional thickness, the thickness of about 0.03 mm-0.3 mm), if the thickness of the concave-convex is required to be out of a certain range (such as 0.2 mm), the deformation thickness of the paper is exceeded, and the paper and the rollers are damaged. The only means to solve this technical solution is to design the embossing pattern so that deeper textures (i.e. double sided textures) can be formed, one being concave and the other being convex. A deeper size and feel can be created. The packaging bags of Diao high-end products all adopt the deeper concave-convex patterns at present. The prior art for manufacturing the embossment has larger difficulty, and two reasonable technical schemes are found through the search comparison of the applicant. For example, publication number CN102744919B, the patent proposes a technical scheme of double-sided embossing for household paper (especially kitchen paper), and the embossing on kitchen paper is realized by processing corresponding embossing points on two opposite steel rolls, so that the problem of product performance is successfully solved by microscopic geometry, and continuous production is realized. The technical scheme can meet the requirements on paper with low requirements on appearance such as kitchen paper, and the like, but can cause adverse effects on packaging bags made of special paper with high appearance requirements. Because both rollers are made of steel, the designed trapezoid boss structure has the gear effect (concave-convex points are mutually extruded) in the running process, so that the appearance of the special paper is adversely affected. The problem is that the concave-convex points in the technical scheme are distributed regularly and generate certain intervals, and the aim of the two special requirements is to solve the problem of alignment of the steel roller. Because the embossing of