CN111021142B

CN111021142B - Non-woven fabric writing paper and preparation method thereof

Info

Publication number: CN111021142B
Application number: CN201911339047.XA
Authority: CN
Inventors: 卢伟新; 禹亚奇; 张自浩; 卢艳艳
Original assignee: Wenzhou Xinyu Nonwoven Fabric Co ltd
Current assignee: Wenzhou Xinyu Nonwoven Fabric Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2022-04-12
Anticipated expiration: 2039-12-23
Also published as: CN111021142A

Abstract

A preparation method of non-woven fabric writing paper comprises the following steps: preparing materials: uniformly mixing polyester fibers or mixed fibers containing more than 80 wt% of polyester fibers; carding to form a net: carding the fiber pairs; laying the carded fibers into a polyester fiber net in a staggered mode, and sizing: sizing a polyester fiber net, wherein the sizing agent is prepared from an adhesive, a waterproof agent and water; drying: and drying the sized polyester fiber net to obtain the non-woven fabric writing paper. The technical scheme adopts the polyester fiber as the raw material to prepare the non-woven fabric writing paper. The thickness of the non-woven fabric writing paper is 34-38mm (100 sheets) when 60g is used, the paper surface is flat, the paper has toughness, and the non-woven fabric writing paper is not easy to permeate in the writing process.

Description

Non-woven fabric writing paper and preparation method thereof

Technical Field

The invention relates to the field of papermaking, in particular to non-woven fabric writing paper and a preparation method thereof.

Background

The non-woven fabric is also called non-woven fabric, and refers to a fabric made by non-traditional spinning, weaving or knitting, and is a non-woven fabric which is generally formed by carding a fiber raw material into a single fiber state by a carding machine, forming a net by means of air flow or machinery and the like, then solidifying by means of spunlace, needling or hot rolling and the like, and finally finishing, and is a novel fiber product with soft, air-permeable and planar structures.

The existing writing paper has limited thickness, the ink is easy to permeate due to good water absorption of wood fiber, the paper is thin and lacks texture, and the calligraphy works to be stored need to be additionally thickened and mounted. Meanwhile, the main raw material wood fiber resource is limited, and the price is higher. Along with the economic development of China, waste cloth has more and more chemical polyester fibers, and the chemical fiber resources are rich and cheap.

Disclosure of Invention

Therefore, it is necessary to provide a high-grade writing paper which can adopt polyester fiber, is not easy to permeate and has a certain thickness. In order to achieve the above object, the inventors provide a method for preparing a non-woven fabric writing paper, comprising the steps of:

preparing materials: uniformly mixing polyester fibers or mixed fibers containing more than 80 wt% of polyester fibers;

carding to form a net: carding the fiber pairs; the carded fiber is spread into a terylene fiber net in a staggered way,

sizing: sizing a polyester fiber net, wherein the sizing agent is prepared from an adhesive, a waterproof agent and water;

drying: and drying the sized polyester fiber net to obtain the non-woven fabric writing paper.

Further, the polyester fiber is 33-38DTEX low-denier polyester fiber.

Further, the adhesive comprises a hard adhesive and a soft adhesive, and the mass ratio of the hard adhesive to the soft adhesive is 3-5: 25-35.

Further, the mass ratio of the polyester fibers to the adhesive to the waterproof agent is 60-80: 28-40:1-2.

Further, the drying temperature is 180-220 ℃, and the drying time is 30-60 min.

Further, the hybrid fiber also includes one or more other natural or chemical fibers.

Further, the preparation method comprises the following steps:

preparing materials: uniformly mixing 65 parts by mass of 33-38DTEX low-denier polyester fibers;

carding to form a net: carding the prepared fiber; and the carded fiber is spread into a terylene fiber net in a staggered way,

sizing: sizing a polyester fiber net by adopting a sizing agent, wherein the sizing agent is prepared by adding water into 30 parts by mass of a soft adhesive, 4 parts by mass of a hard adhesive and 1 part by mass of a waterproof agent;

drying: and drying the sized polyester fiber net for 30min at 200 ℃ to obtain the non-woven writing paper base cloth.

The inventor also provides the non-woven fabric writing paper which is prepared by the preparation method.

Different from the prior art, the technical scheme adopts the polyester fiber as the raw material to prepare the non-woven fabric writing paper. The thickness of the non-woven fabric writing paper is 34-38mm (100 sheets) when 60g is used, the paper surface is flat, the paper has toughness, and the non-woven fabric writing paper is not easy to permeate in the writing process.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the technical means in detail, the following detailed description is given with reference to specific embodiments.

In the embodiment, in the sizing step, the mass of the added water is 0.8-1.2 times of the total mass of the added adhesive and the added waterproofing agent.

EXAMPLE 1 preparation of a nonwoven writing paper

sizing: sizing a polyester fiber net by adopting a sizing agent, wherein the sizing agent is prepared from 30 parts by mass of a soft adhesive, 4 parts by mass of a hard adhesive, 1 part by mass of a waterproof agent and 35 parts by mass of water;

drying: and drying the sized polyester fiber net for 30min at 200 ℃ to obtain the non-woven fabric writing paper.

In the embodiment, the soft adhesive adopts SHD soft adhesive in the chemical transmission industry, the hard adhesive adopts 351HA hard adhesive in the chemical transmission industry, and the waterproof agent adopts FS01 waterproof agent in the chemical transmission industry.

The slurry mixed with the soft and hard binder binds the fibers and reinforces the writing paper. The application of the waterproof agent can reduce the permeability of water molecules and avoid the permeability during writing. The sizing agent can form smooth and flat surfaces on the upper surface and the lower surface of the polyester fiber net; and the low-denier polyester fibers adopting 33-38DTEX can reduce the roughness of the surface of the writing paper, so that the surface of the writing paper is smooth.

EXAMPLE 2 preparation of a nonwoven writing paper

Preparing materials: uniformly mixing 60 parts by mass of 33-38DTEX low-denier polyester fibers;

sizing: sizing a polyester fiber net by adopting a sizing agent, wherein the sizing agent is prepared from 25 parts by mass of a soft adhesive, 3 parts by mass of a hard adhesive, 1 part by mass of a waterproof agent and 24 parts by mass of water;

drying: and drying the sized polyester fiber net for 30min at 220 ℃ to obtain the non-woven fabric writing paper.

EXAMPLE 3 preparation of a nonwoven writing paper

Preparing materials: uniformly mixing 80 parts by mass of 33-38DTEX low-denier polyester fibers;

sizing: sizing a polyester fiber net by adopting a sizing agent, wherein the sizing agent is prepared from 35 parts by mass of a soft adhesive, 5 parts by mass of a hard adhesive, 2 parts by mass of a waterproof agent and 50 parts by mass of water;

drying: and drying the sized polyester fiber net for 60min at 180 ℃ to obtain the non-woven fabric writing paper.

EXAMPLE 4 preparation of a nonwoven writing paper

Preparing materials: uniformly mixing 70 parts by mass of 33-38DTEX low-denier polyester fibers;

sizing: sizing a polyester fiber net by adopting a sizing agent, wherein the sizing agent is prepared from 32 parts by mass of a soft adhesive, 4 parts by mass of a hard adhesive, 1.5 parts by mass of a waterproof agent and 36 parts by mass of water;

drying: and drying the sized polyester fiber net for 50min at 200 ℃ to obtain the non-woven fabric writing paper.

EXAMPLE 5 preparation of a nonwoven writing paper

sizing: sizing a polyester fiber net by adopting a sizing agent, wherein the sizing agent is prepared from 30 parts by mass of a soft adhesive, 5 parts by mass of a hard adhesive, 1.5 parts by mass of a waterproof agent and 38 parts by mass of water;

EXAMPLE 6 preparation of a nonwoven writing paper

Preparing materials: uniformly mixing 60 parts by mass of 33-38DTEX low-denier polyester fibers and 10 parts by mass of wood fibers;

sizing: sizing a polyester fiber net by adopting a sizing agent, wherein the sizing agent is prepared from 32 parts by mass of a soft adhesive, 4 parts by mass of a hard adhesive, 1.5 parts by mass of a waterproof agent and 40 parts by mass of water;

EXAMPLE 7 preparation of a nonwoven writing paper

Preparing materials: uniformly mixing 72 parts by mass of 33-38DTEX low-denier polyester fibers and 18 parts by mass of wood fibers;

sizing: sizing a polyester fiber net by adopting a sizing agent, wherein the sizing agent is prepared from 30 parts by mass of a soft adhesive, 4 parts by mass of a hard adhesive, 2 parts by mass of a waterproof agent and 31 parts by mass of water;

The nonwoven writing papers obtained in examples 1 to 5 were examined for tensile strength and elongation at break in the dry state, and the results are shown in the following table:

compared with the common writing paper on the market at present, the thickness of the non-woven writing paper with the same gram number is far more than that of the common writing paper, and the thickness is 34-38mm (100 sheets) when 60g is used. Meanwhile, the tensile strength and the elongation at break are higher, and the paper has higher toughness.

The nonwoven writing papers prepared in examples 6 to 7, which contain fibers other than polyester fibers, have higher water absorption than the nonwoven writing papers containing only polyester fibers, have substantially unchanged other indexes, and are more suitable for writing calligraphy works.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein or by using equivalent structures or equivalent processes performed in the present specification, and are included in the scope of the present invention.

Claims

1. The preparation method of the non-woven fabric writing paper is characterized by comprising the following steps:

preparing materials: evenly mixing polyester fibers or mixed fibers containing more than 80 wt% of polyester fibers,

drying: drying the sized polyester fiber net to obtain non-woven fabric writing paper;

the polyester fiber is 33-38DTEX low-denier polyester fiber;

the adhesive comprises a hard adhesive and a soft adhesive, and the mass ratio of the hard adhesive to the soft adhesive is 3-5: 25-35;

the mass ratio of the polyester fiber to the adhesive to the waterproof agent is 60-80: 28-40: 1-2;

the drying temperature is 180-220 ℃, and the drying time is 30-60 min;

the soft adhesive adopts SHD soft adhesive of chemical transmission, the hard adhesive adopts 351HA hard adhesive of chemical transmission, and the water-proofing agent adopts FS01 water-proofing agent of chemical transmission.

2. The method of manufacturing as claimed in claim 1, wherein the hybrid fiber further comprises one or more other natural or chemical fibers.

3. The method of claim 1, comprising the steps of:

4. A nonwoven fabric writing paper, characterized in that the nonwoven fabric writing paper is prepared by the preparation method of any one of claims 1 to 3.