Preparation method of high-toughness dust-free paper

Abstract

The invention discloses a preparation method of high-toughness dust-free paper, and relates to the technical field of dust-free paper preparation, the high-toughness dust-free paper comprises 10-60 parts of a first layer, 10-30 parts of a second layer and 10-20 parts of a third layer, the first layer comprises wood pulp fiber, the second layer comprises polypropylene fiber, the third layer comprises high-molecular water-absorbent resin and aramid fiber, and the third layer comprises water-absorbent resin and aramid fiber. The wood pulp fibers have the characteristic of soft texture, so that the dust-free paper does not scratch or damage the surface of an object in the wiping process, and the polypropylene fibers and the aramid fibers are added, so that the strength and the toughness of the dust-free paper are further enhanced, the dust-free paper is more durable, the dust-free paper can be kept stable in a severe working environment, and the service life of the dust-free paper is prolonged. The dust-free paper is not easy to age or deform, and the molecular structure of the aramid fibers can keep stable under high-temperature and high-pressure occasions, so that static electricity generated in the use process of the dust-free paper can be effectively reduced, and sensitive equipment and components are protected from being damaged by the static electricity.

Description

Technical Field

[0001] The present invention relates to the technical field of dust-free paper preparation, and in particular to a method for preparing high-toughness dust-free paper. Background Art

[0002] Dust-free paper, also known as dry-laid nonwoven fabric, is a type of dry-laid nonwoven fabric. Dust-free paper is a special paper material made of multiple layers of special paper, wool fiber and other materials through a special process. Dust-free paper is strictly controlled during the production process to ensure that the paper does not generate dust during use. It is very suitable for occasions with high cleanliness requirements. The production process of dust-free paper needs to be carried out in a strict dust-free environment. Through a series of process treatments, such as fiber dispersion, web formation, reinforcement, etc., dust-free paper with special properties is finally obtained.

[0003] The existing dust-free paper has poor toughness, which makes it easier to break and tear when subjected to external force, shortening its service life and reducing the cleaning effect, making the wiped objects easily contaminated. To this end, we provide a method for preparing high-toughness dust-free paper. Summary of the invention

[0004] The object of the present invention is to provide a method for preparing high-toughness dust-free paper to solve the problem mentioned in the above background technology that the existing dust-free paper has poor toughness, which makes the dust-free paper more easily damaged and torn when subjected to external force, resulting in a shortened service life, and reduces the cleaning effect, making the wiped objects easily contaminated.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a high-tenacity dust-free paper, comprising, by weight, 10-60 parts of a first layer, 10-30 parts of a second layer and 10-20 parts of a third layer, wherein the first layer comprises wood pulp fibers, the second layer comprises polypropylene fibers, and the third layer comprises a high molecular water-absorbent resin and aramid fibers.

[0006] Preferably, by weight percentage, the first layer comprises 100% wood pulp fibers, the second layer comprises 100% polypropylene fibers, and the third layer comprises 30% high molecular water-absorbing resin and 70% aramid fibers.

[0007] Preferably, the wood pulp fiber is prepared from reed and straw, with the weight percentage being 30% reed and 70% straw.

[0008] Preferably, the surface of the dust-free paper is coated with a chitosan antibacterial agent.

[0009] Preferably, a method for preparing high-toughness dust-free paper comprises the following steps:

[0010] Step 1: Separate the sorted reeds and straws and immerse them in a sodium hydroxide solution for pre-impregnation to soften the reed and straw fibers, making them easier to handle and disperse. Separate the pre-impregnated reeds and straws and boil them with alkali to disperse them into fibers. After boiling, filter the obtained cellulose solution of reeds and straws to separate the fibers and residual liquid. Then, wash and degummed the fibers until the pH value of the cellulose reaches 7 to 8. Extrude and dehydrate the washed reeds and straws, perform chemical and bleaching treatments, and disperse the treated reed and straw fibers to form a uniform fiber suspension and mix them.

[0011] Step 2: crushing and grinding the polymer water-absorbing resin into a suitable particle size, and adding it into the aramid fiber liquid for mixing;

[0012] Step 3: Pulp fibers, polypropylene fibers and aramid fibers are respectively crushed by air flow and deposited on a web curtain to form a web, and the fibers in the web are combined with each other by spraying a water-soluble adhesive or hot air, hot rolling and other methods to form a three-layer stable web structure;

[0013] Step 4: stack the three-layer fiber web structure from the first layer to the third layer in sequence and send them into a hot oven for thermal bonding, and then cool them naturally;

[0014] Step 5: Use a coating machine to evenly coat the surface of the formed dust-free cloth with an antibacterial agent to form an antibacterial layer on the surface of the dust-free cloth. Then use a dryer to dry the dust-free cloth, and then proceed with subsequent cutting and packaging.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The plant fibers made of reeds and straws are soft in texture, so the dust-free paper will not scratch or damage the surface of the object during the wiping process. The addition of polypropylene fiber and aramid fiber further enhances the strength and toughness of the dust-free paper, making it more durable, so that the dust-free paper can remain stable in harsh working environments and is not easy to age or deform. The molecular structure of aramid fiber allows it to remain stable under high temperature and high pressure, which can effectively reduce the static electricity generated by the dust-free paper during use, thereby protecting sensitive equipment and components from static electricity damage. The polymer absorbent resin has super water absorption performance and can quickly absorb and lock a large amount of water, so that the dust-free paper remains soft and not easy to break in a wet state. This feature enables the dust-free paper to more effectively remove stains and grease during the wiping process, while keeping the wiped surface clean and dry.

[0017] 2. Reeds and straw are rich in fiber resources, which can increase the fiber content of dust-free paper, thereby enhancing physical properties and cleaning effects. In addition, the use of different types of plant fiber raw materials such as reeds and straw can increase the diversity of raw materials for dust-free paper and reduce dependence on a single raw material. The use of straw as an agricultural waste can help reduce waste accumulation and environmental pollution, while achieving effective utilization of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the steps for preparing the dust-free paper of the invention; DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example 1

[0021] By weight, the paper comprises 10-60 parts of a first layer, 10-30 parts of a second layer and 10-20 parts of a third layer, wherein the first layer comprises wood pulp fibers, the second layer comprises polypropylene fibers, the third layer comprises polymer absorbent resin and aramid fibers, the wood pulp fibers are prepared from reeds and straws, the weight percentage being 30% reeds and 70% straws, and the surface of the dust-free paper is coated with a chitosan antibacterial agent.

[0022] A method for preparing high-toughness dust-free paper comprises the following steps:

[0023] Step 1: Separate the sorted reeds and straws and immerse them in a sodium hydroxide solution for pre-impregnation to soften the reed and straw fibers, making them easier to handle and disperse. Separate the pre-impregnated reeds and straws and boil them with alkali to disperse them into fibers. After boiling, filter the obtained cellulose solution of reeds and straws to separate the fibers and residual liquid. Then, wash and degummed the fibers until the pH value of the cellulose reaches 7 to 8. Extrude and dehydrate the washed reeds and straws, perform chemical and bleaching treatments, and disperse the treated reed and straw fibers to form a uniform fiber suspension and mix them.

[0024] Step 2: crushing and grinding the polymer water-absorbing resin into a suitable particle size, and adding it into the aramid fiber liquid for mixing;

[0025] Step 3: Pulp fibers, polypropylene fibers and aramid fibers are respectively crushed by air flow and deposited on a web curtain to form a web, and the fibers in the web are combined with each other by spraying a water-soluble adhesive or hot air, hot rolling and other methods to form a three-layer stable web structure;

[0026] Step 4: stack the three-layer fiber web structure from the first layer to the third layer in sequence and send them into a hot oven for thermal bonding, and then cool them naturally;

[0027] Step 5: Use a coating machine to evenly coat the surface of the formed dust-free cloth with an antibacterial agent to form an antibacterial layer on the surface of the dust-free cloth. Then use a dryer to dry the dust-free cloth, and then proceed with subsequent cutting and packaging.

[0028] Example 2

[0029] By weight percentage, the first layer includes 100% wood pulp fibers, the second layer includes 100% polypropylene fibers, the third layer includes 30% high molecular water-absorbent resin and 70% aramid fibers, the wood pulp fibers are prepared from reeds and straws, by weight percentage being 30% reeds and 70% straws, and the surface of the dust-free paper is coated with chitosan antibacterial agent.

[0030] A method for preparing high-toughness dust-free paper comprises the following steps:

[0031] Step 1: Separate the sorted reeds and straws and immerse them in a sodium hydroxide solution for pre-impregnation to soften the reed and straw fibers, making them easier to handle and disperse. Separate the pre-impregnated reeds and straws and boil them with alkali to disperse them into fibers. After boiling, filter the obtained cellulose solution of reeds and straws to separate the fibers and residual liquid. Then, wash and degummed the fibers until the pH value of the cellulose reaches 7 to 8. Extrude and dehydrate the washed reeds and straws, perform chemical and bleaching treatments, and disperse the treated reed and straw fibers to form a uniform fiber suspension and mix them.

[0032] Step 2: crushing and grinding the polymer water-absorbing resin into a suitable particle size, and adding it into the aramid fiber liquid for mixing;

[0033] Step 3: Pulp fibers, polypropylene fibers and aramid fibers are respectively crushed by air flow and deposited on a web curtain to form a web, and the fibers in the web are combined with each other by spraying a water-soluble adhesive or hot air, hot rolling and other methods to form a three-layer stable web structure;

[0034] Step 4: stack the three-layer fiber web structure from the first layer to the third layer in sequence and send them into a hot oven for thermal bonding, and then cool them naturally;

[0035] Step 5: Use a coating machine to evenly coat the surface of the formed dust-free cloth with an antibacterial agent to form an antibacterial layer on the surface of the dust-free cloth. Then use a dryer to dry the dust-free cloth, and then proceed with subsequent cutting and packaging.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-toughness dust-free paper, characterized in that: By weight, it comprises 10-60 parts of a first layer, 10-30 parts of a second layer and 10-20 parts of a third layer, wherein the first layer comprises wood pulp fibers, the second layer comprises polypropylene fibers, and the third layer comprises high molecular water-absorbing resin and aramid fibers.

2. The high-toughness dust-free paper according to claim 1, characterized in that: By weight percentage, the first layer includes 100% wood pulp fibers, the second layer includes 100% polypropylene fibers, and the third layer includes 30% high molecular water-absorbing resin and 70% aramid fibers.

3. The high-toughness dust-free paper according to claim 2, characterized in that: The wood pulp fiber is prepared from reed and straw, with the weight percentage being 30% of reed and 70% of straw.

4. The high-toughness dust-free paper according to claim 3, characterized in that: The surface of the dust-free paper is coated with a chitosan antibacterial agent.

5. A method for preparing high-toughness dust-free paper, based on the high-toughness dust-free paper according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: The sorted reeds and straws are separately immersed in a sodium hydroxide solution for pre-impregnation treatment to soften the reed and straw fibers, making them easier to handle and disperse subsequently; the pre-impregnated reeds and straws are separately boiled with alkali solution to disperse them into fibers; after the boiling is completed, the obtained cellulose solution of the reeds and straws is filtered to separate the fibers and the residual liquid; then, the fibers are washed and degummed until the pH value of the cellulose reaches 7 to 8; the washed reeds and straws are squeezed and dehydrated, and the fibers are chemically and bleached for fiber treatment; the treated reed and straw fibers are dispersed to form a uniform fiber suspension and mixed; Step 2: crushing and grinding the polymer water-absorbing resin into a suitable particle size, and adding it into the aramid fiber liquid for mixing; Step 3: Pulp fibers, polypropylene fibers and aramid fibers are respectively crushed by air flow and deposited on a mesh curtain to form a fiber web, and the fibers in the fiber web are combined with each other by spraying a water-soluble adhesive or hot air or hot rolling to form a three-layer stable fiber web structure; Step 4: stack the three-layer fiber web structure from the first layer to the third layer in sequence and send them into a hot oven for thermal bonding, and then cool them naturally; Step 5: Use a coating machine to evenly coat the surface of the formed dust-free cloth with an antibacterial agent to form an antibacterial layer on the surface of the dust-free cloth. Then use a dryer to dry the dust-free cloth before proceeding with subsequent cutting and packaging.

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