A kind of flushable composite material non-woven fabric and manufacturing process

Abstract

The present invention discloses a disintegratable composite material non-woven fabric and a manufacturing process, comprising the following steps: A. Making a wet fiber web: dispersing natural plant fibers, adding water to mix, beating into slurry, and preliminarily dehydrating the slurry through a filter screen to obtain a wet fiber web; B. Making a mixed fiber web: spreading water-soluble fibers on a wet fiber web, rolling to remove water, and obtaining a dry mixed fiber web; C. Compounding: taking three mixed fiber webs of the same size, respectively named as the first mixed fiber web, the second mixed fiber web, and the third mixed fiber web, punching holes on the second mixed fiber web to obtain array-distributed glue injection holes, superimposing the second mixed fiber web on the third mixed fiber web, and then injecting hydrosol into the glue injection holes. The disintegratable composite material non-woven fabric and the manufacturing process described in the present invention have good stability during use, can achieve rapid disintegration and degradation, and reduce pollution to the environment.

Description

Technical Field

[0001] The invention relates to the technical field of nonwoven fabrics, and in particular to a disintegratable composite material nonwoven fabric and a manufacturing process thereof. Background Art

[0002] Non-woven fabrics are widely used in the field of cleaning. They are low in cost and are mostly disposable. They can be thrown into the trash can after use without washing, so they are very convenient to use.

[0003] With the promotion of non-woven fabrics, the amount of use is increasing, and the pollution problems are becoming more and more serious. Non-woven fabrics are mostly made of synthetic fibers, which have a stable structure and are difficult to disperse in water. They are easy to clog sewer pipes and are even more difficult to degrade. In order to achieve the degradation of non-woven fabrics, natural fibers can be used as the material of non-woven fabrics, but they still cannot be quickly dispersed in water. Therefore, it is usually necessary to reduce the thickness of natural fiber non-woven fabrics.

[0004] The strength of natural fibers is inherently lower than that of synthetic fibers. If the thickness is further reduced, the fastness of the non-woven fabric cannot be guaranteed and it is easy to be damaged during use, affecting the use effect. Improvements are needed. Summary of the invention

[0005] The object of the present invention is to provide a flushable composite material non-woven fabric and a manufacturing process, so as to achieve the flushability and degradation of the non-woven fabric and ensure the structural stability during use.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A process for manufacturing a flushable composite nonwoven fabric comprises the following steps:

[0008] A. Preparation of wet fiber web: natural plant fibers are dispersed, mixed with water, and beaten into slurry. The slurry is initially dehydrated through a filter to obtain a wet fiber web;

[0009] B. Preparation of mixed fiber web: Spread the water-soluble fiber on the wet fiber web, roll to remove water, and perform hot pressing to obtain a dry mixed fiber web;

[0010] C. Composite: Take three mixed fiber webs of the same size and name them as the first mixed fiber web, the second mixed fiber web and the third mixed fiber web respectively, punch holes in the second mixed fiber web to obtain glue injection holes distributed in an array, superimpose the second mixed fiber web on the third mixed fiber web, and then inject hydrosol into the glue injection holes, then cover the first mixed fiber web on the second mixed fiber web, and perform hot pressing and curing to obtain a composite material non-woven fabric.

[0011] Wherein, the natural plant fiber is one or more of cotton fiber, bamboo fiber and wood fiber.

[0012] Wherein, in the step of making the wet fiber web, holes are punched on the wet fiber web to obtain through holes distributed in an array.

[0013] Wherein, in the step of making the mixed fiber web, water-soluble fibers are used to fill or cover the through holes.

[0014] Wherein, in the compounding step, during the hot pressing and curing, the positions of the injection holes are subjected to embossing treatment to obtain decorative patterns on the surface of the composite material non-woven fabric.

[0015] To achieve this object, another technical solution adopted by the present invention is:

[0016] Provided is a flushable composite material non-woven fabric, which is produced by the manufacturing process of the flushable composite material non-woven fabric.

[0017] The beneficial effects of the present invention are as follows: a flushable composite material non-woven fabric and a manufacturing process, wherein the non-woven fabric is made of a three-layer composite structure, which can ensure structural strength and good stability during use. When flushed in a toilet, it can be quickly flushed away, thus avoiding the problem of pipe blockage. The material is environmentally friendly and degradable, thus reducing the problem of environmental pollution. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further illustrated by specific embodiments below.

[0019] Embodiment 1:

[0020] A process for manufacturing a flushable composite nonwoven fabric comprises the following steps:

[0021] A. Preparation of wet fiber web: natural plant fibers are dispersed, mixed with water, and beaten into slurry. The slurry is preliminarily dehydrated through a filter to obtain a wet fiber web. In this embodiment, the natural plant fibers can be one or more of cotton fibers, bamboo fibers, and wood fibers. The materials are environmentally friendly and degradable, thereby reducing pollution to the environment.

[0022] B. Preparation of mixed fiber web: water-soluble fiber is spread on the wet fiber web, rolled to remove water, and hot-pressed and dried at 80-100°C to obtain a dry mixed fiber web. When the water-soluble fiber is spread on the wet fiber web, it can absorb the moisture on the wet fiber web and dissolve locally, which can not only reduce the energy consumption of subsequent hot-pressing drying, but also improve the structural stability of the single-layer mixed fiber web through local dissolution and solidification, which is conducive to further reducing the thickness of the wet fiber web, thereby improving the dispersion speed in the subsequent flushing process;

[0023] C. Composite: Take three mixed fiber webs of the same size, named as the first mixed fiber web, the second mixed fiber web and the third mixed fiber web respectively, punch holes on the second mixed fiber web to obtain injection holes distributed in a rectangular array, superimpose the second mixed fiber web on the third mixed fiber web, and then inject hydrosol into the injection holes, then cover the first mixed fiber web on the second mixed fiber web, and perform low-temperature hot pressing and curing at 50-60°C to obtain a composite material non-woven fabric, and the hydrosol in the injection holes is used to fix the first mixed fiber web, the second mixed fiber web and the third mixed fiber web after composite, and form multiple fixing points, which are relatively stable during use. In the subsequent flushing process, the hydrosol in the injection holes can be quickly dissolved to achieve the separation of the first mixed fiber web, the second mixed fiber web and the third mixed fiber web, and the first mixed fiber web, the second mixed fiber web and the third mixed fiber web are respectively dispersed to increase the dispersion and degradation rates.

[0024] Embodiment 2:

[0025] A process for manufacturing a flushable composite nonwoven fabric comprises the following steps:

[0026] A. Preparation of wet fiber web: natural plant fibers are dispersed, mixed with water, and beaten into slurry. The slurry is initially dehydrated through a filter to obtain a wet fiber web. In this embodiment, holes are punched on the wet fiber web to obtain through holes distributed in a rectangular array.

[0027] B. Preparation of mixed fiber web: water-soluble fibers are spread on the wet fiber web, and the through holes are filled or covered with the water-soluble fibers, and then rolled to remove water, and hot-pressed to dry to obtain a dry mixed fiber web. When the mixed fiber web is discarded and flushed after use, the water-soluble fibers in the through holes are dissolved first, weakening the structure of the mixed fiber web and improving the dispersion rate of the mixed fiber web;

[0028] C. Composite: Take three mixed fiber webs of the same size, named as the first mixed fiber web, the second mixed fiber web and the third mixed fiber web, punch holes on the second mixed fiber web to obtain array-distributed glue injection holes, superimpose the second mixed fiber web on the third mixed fiber web, and then inject hydrosol into the glue injection holes, then cover the first mixed fiber web on the second mixed fiber web, perform hot pressing and curing, and obtain a composite material non-woven fabric;

[0029] In addition, during hot pressing and curing, the injection holes are embossed to obtain decorative patterns on the surface of the composite material non-woven fabric. The embossing treatment can not only improve the structural strength, but also cover the local color difference problems caused by the injection holes and the hydrosol.

[0030] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A process for manufacturing a nonwoven fabric of a flushable composite material, characterized in that: The following steps are involved: A. Preparation of wet fiber web: natural plant fibers are dispersed, mixed with water, and beaten into slurry. The slurry is initially dehydrated through a filter to obtain a wet fiber web. The wet fiber web is punched to obtain through holes distributed in an array. B. Preparation of mixed fiber web: Spread the water-soluble fiber on the wet fiber web, roll to remove water, and perform hot pressing to obtain a dry mixed fiber web; C. Composite: Take three mixed fiber webs of the same size, named as the first mixed fiber web, the second mixed fiber web and the third mixed fiber web, punch holes on the second mixed fiber web to obtain array-distributed glue injection holes, superimpose the second mixed fiber web on the third mixed fiber web, and then inject hydrosol into the glue injection holes, then cover the first mixed fiber web on the second mixed fiber web, perform hot pressing and curing, and obtain a composite material non-woven fabric; During hot pressing and curing, the injection hole positions are embossed to obtain decorative patterns on the surface of the composite nonwoven fabric.

2. The manufacturing process of the flushable composite material nonwoven fabric according to claim 1, characterized in that: The natural plant fiber is one or more of cotton fiber, bamboo fiber and wood fiber.

3. The manufacturing process of the flushable composite material nonwoven fabric according to claim 1, characterized in that: In the step of making the mixed fiber web, water-soluble fibers are used to fill or cover the through holes.

4. A flushable composite nonwoven fabric, characterized in that: The nonwoven fabric is prepared by the manufacturing process of the flushable composite material nonwoven fabric as described in any one of claims 1 to 3.