A kind of preparation method of high-performance release paper

A high-performance technology for release paper, applied in pulp beating methods, papermaking, paper coatings, etc., can solve the problems of reduced use times, unstable peel strength, and increased cost of release paper, and achieve stable peel performance and excellent resistance. Oxidative aging ability, effect of increasing strength

Active Publication Date: 2022-04-22
XIANHE CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the fact that the coating layer on the release paper in the prior art is prone to aging during long-term storage and high-temperature use, which easily leads to unstable peel strength, and it is also easy to reduce the number of times the release paper is used. reduce the waste of materials, but also greatly increase the cost and other issues, a preparation method of high-performance release paper is proposed

Method used

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  • A kind of preparation method of high-performance release paper

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preparation example Construction

[0034] A method for preparing high-performance release paper, comprising the following preparation steps:

[0035](1) Select bleached kraft softwood pulp with a beating degree of 50-60°SR after refining as the raw material slurry, then add acrylic resin-coated titanium dioxide and mix evenly, and the addition amount per ton of paper is 80-120kg;

[0036] (2) Adding the sizing agent alkyl ketene dimer in the pulp, the addition amount is 0.08-0.3wt%;

[0037] (3) On the fourdrinier paper machine, carry out online copying, pressing and dehydration;

[0038] (4) The paper is first dried to a humidity of 25-35wt%, followed by semi-wet drying and pressure treatment at 90-110°C;

[0039] (5) Use starch for surface sizing, the amount of sizing is 0.8-2g / m 2 , followed by drying;

[0040] (6) Prepare base paper after spraying wetting, super calendering, coiling and slitting;

[0041] (7) Corona discharge treatment is carried out on the base paper, and then the anti-oxidation silico...

Embodiment 1

[0045] A method for preparing high-performance release paper, comprising the following preparation steps:

[0046] (1) the bleached kraft softwood pulp of 55 ° of SR is used as the raw material slurry after the degree of beating is selected for use;

[0047] (2) adding the sizing agent alkyl ketene dimer in the slurry, the addition amount is 0.15wt%;

[0048] (3) On the fourdrinier paper machine, carry out online copying, pressing and dehydration;

[0049] (4) The paper is first dried to a humidity of 30wt%, followed by semi-wet drying and pressure treatment at 100°C;

[0050] (5) Use starch for surface sizing, and the sizing amount is 1.3g / m 2 , followed by drying;

[0051] (6) Prepare base paper after spraying wetting, super calendering, coiling and slitting;

[0052] (7) Corona discharge treatment is carried out on the base paper, and then the anti-oxidation silicone emulsion is coated on the base paper, and the coating amount is 1.1g / m 2 , to prepare high-performance ...

Embodiment 2

[0055] A method for preparing high-performance release paper, comprising the following preparation steps:

[0056] (1) select the bleached kraft softwood pulp of 50 ° of SR as the raw material slurry after the beating degree is selected;

[0057] (2) adding the sizing agent alkyl ketene dimer in the slurry, the addition amount is 0.08wt%;

[0058] (3) On the fourdrinier paper machine, carry out online copying, pressing and dehydration;

[0059] (4) The paper is first dried to a humidity of 35wt%, followed by semi-wet drying and pressure treatment at 90°C;

[0060] (5) Use starch for surface sizing, the amount of sizing is 0.9g / m 2 , followed by drying;

[0061] (6) Prepare base paper after spraying wetting, super calendering, coiling and slitting;

[0062] (7) The base paper is treated with corona discharge, and then the anti-oxidation silicone emulsion is coated on the base paper, and the coating amount is 1g / m 2 , to prepare high-performance release paper after drying; ...

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Abstract

The invention discloses a method for preparing high-performance release paper, which relates to the technical field of papermaking, and comprises the following preparation steps: (1) selecting bleached kraft softwood pulp after pulping as a raw material slurry; (2) preparing the raw material pulp (3) On the fourdrinier paper machine, carry out online papermaking, press dehydration; (4) Semi-wet drying and pressure treatment; (5) Surface sizing and drying; (6) Spray wetting , Super calendering, coiling, and slitting to prepare the base paper; (7) Corona discharge treatment is performed on the base paper, and then the anti-oxidation silicone emulsion is coated on the base paper, and the high-performance release paper is prepared after drying; In the present invention, the release layer prepared by coating with anti-oxidation and anti-oxidation silicone emulsion has excellent anti-oxidation and aging ability, which prevents the coating layer on the release paper from being damaged after long-term storage and high-temperature use. At the same time, the peeling performance is more stable, and the release paper can be used more frequently.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a method for preparing high-performance release paper. Background technique [0002] Release paper is a kind of coated paper, usually composed of a paper base layer and a coating layer, and its basic structure is not much different from that of general coated paper. Release paper has a wide range of uses, and can be used in construction and other industries. The use environment is high-temperature environment, such as in the production of thermosetting resin-impregnated paper high-pressure decorative laminates. Thermosetting resin-impregnated paper high-pressure decorative laminates are made of several special The paper is impregnated with melamine resin (MF resin) and phenolic resin respectively, and then different types of impregnated special paper blanks are stacked together, and the thermosetting sheet made after hot pressing is affected by the evenness and permeability o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/00D21D1/02D21F1/00D21F3/00D21G1/00D21H21/16D21H25/04
CPCD21D1/02D21H21/16D21F1/00D21F3/00D21G1/00D21H25/04
Inventor 张诚史君齐骆华英岳跃振路崇斌郑世安
Owner XIANHE CO LTD
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