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Film transfer sizing method of oil-proof paper

A technology of film transfer sizing and oil-proof paper, which can be used in paper, papermaking, paper coating, etc., and can solve the problems of poor bonding between surface sizing agent and fiber.

Pending Publication Date: 2020-07-07
SHANDONG RENFENG SPECIAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the technical defects of the prior art, and provides a film transfer sizing method for oil-proof paper to solve the technical problem of poor bonding between the surface sizing agent and the fiber in the conventional film transfer sizing process

Method used

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  • Film transfer sizing method of oil-proof paper

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Effect test

Embodiment 1

[0024] A film transfer sizing method for oil-proof paper, its technological process is as follows figure 1 shown.

[0025] 1. This method uses a new type of surface sizing agent:

[0026] 1. Raw materials: cationic surface tapioca starch, polyvinyl alcohol, stearic acid, paraffin, 5% ammonia water, anionic oil repellent.

[0027] 2. Formula and preparation: 100kg cationic surface tapioca starch + 8kg polyvinyl alcohol + 10kg anionic oil repellent + 80kg ammonium stearate paraffin glue solution + 600kg clear water. Stir and steam in the surface glue cooking tank to 95°C, keep warm for 20 minutes, and then add 60°C warm water to dilute in the dilution tank to make a surface sizing agent solution with a concentration of 12%.

[0028] 3. The quality standard of the new surface sizing agent solution: concentration 12±0.2%, viscosity 18-20mpa.s, ph7-7.5 temperature 65-70℃.

[0029] 4. Formula and preparation of ammonium stearate paraffin wax: stearic acid 100kg + paraffin wax 100...

Embodiment 2

[0039] A film transfer sizing method for greaseproof paper, the surface sizing agent used in the method comprises the following components by weight: 100 parts of cationic surface tapioca starch, 8 parts of polyvinyl alcohol, 80 parts of anionic oil repellent, stearic acid Ammonium paraffin gum solution 80 parts, water 600 parts.

[0040] Wherein, the ammonium stearate paraffin wax gum comprises the following components in parts by weight: 100 parts of stearic acid, 100 parts of paraffin wax, 80 parts of 5% ammonia water, and 880 parts of water.

[0041] The ammonium stearate paraffin wax gum is prepared by the following method: mix stearic acid, paraffin wax, 5% ammonia water and water in the prescribed amount, stir with steam, heat up to 75° C., and continue to boil for 90 minutes.

[0042] The ammonium stearate paraffin wax solution is prepared by the following method: mix the stearic acid, paraffin, 5% ammonia water and water in the formula quantity, ventilate and stir, an...

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Abstract

The invention provides a film transfer sizing method of oil-proof paper. In the technical scheme, a surface sizing agent with a brand new formula is adopted in a film transfer sizing process, and thecontrol conditions of a film transfer sizing machine are optimized and improved. Specifically, stearic acid, paraffin, ammonia water and clear water are used for preparing an ammonium stearate paraffin glue solution, the ammonium stearate paraffin glue solution is used for replacing part of an oil-proof agent, and the ammonium stearate paraffin glue solution, and cationic surface cassava starch, polyvinyl alcohol, an anionic oil-proof agent and clear water with a specific proportion are jointly prepared into the surface sizing agent. The binding force of the oil-proof agent and fibers is improved, the oil-proof grade is increased, the paper sheet appearance frosted performance is enhanced, and the use amount of the oil-proof agent is reduced, so that the cost is reduced. On the basis, thecontrol conditions of the film transfer sizing machine are improved, and the problem that the difference between the oil-proof grades of the two sides of oil-proof paper of a large cylinder machine istoo large can be solved by adjusting the models and the pressures of the metering rods of an upper beam and a lower beam.

Description

technical field [0001] The invention relates to the technical field of oil-proof paper production, in particular to a film transfer sizing method for oil-proof paper. Background technique [0002] At present, domestic oil-proof paper production generally uses soaking sizing machines, and the sizing agent is oxidized starch + oil-proof agent. The disadvantage of this sizing method is that it cannot be applied to the production of oil-proof paper for high-speed paper machines. The speed of high-speed paper machines is fast, and the dryness of the soaked sizing machine when the paper leaves is low, so it cannot meet the high speed requirements, and the film transfer sizing machine replacement. [0003] The film transfer sizing machine is a metering rod coating sizing machine, which has the advantages of being suitable for high-concentration sizing agents and high paper dryness, which is conducive to increasing the speed of the machine, reducing paper breaks, and reducing steam...

Claims

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Application Information

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IPC IPC(8): D21H21/16D21H19/10D21H17/29D21H17/36D21H17/60D21H17/14D21H17/64D21H21/14D21H23/56D21H23/78
CPCD21H17/14D21H17/29D21H17/36D21H17/60D21H17/64D21H19/10D21H21/14D21H21/16D21H23/56D21H23/78
Inventor 徐家东王帅宋佃凤
Owner SHANDONG RENFENG SPECIAL MATERIALS
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