WO2021098130A1

WO2021098130A1 - Apparatus for preparing needle punched glue-free absorbent core

Info

Publication number: WO2021098130A1
Application number: PCT/CN2020/084361
Authority: WO
Inventors: 刘瑛; 梁国辉
Original assignee: 深圳市棉芯科技有限公司
Priority date: 2019-11-22
Filing date: 2020-04-12
Publication date: 2021-05-27
Also published as: CN212426371U

Abstract

An apparatus for preparing a needle punched glue-free absorbent core comprising an opener, a first vacuum cotton feeding machine, a first carding machine, a first lapping machine, a duster, a backward punching machine, a second lapping machine, a duster, a forward punching machine, a drying oven, a combination machine, and a winding machine connected in sequence, and further comprises a second vacuum cotton feeding machine connected to the opener, a second vacuum cotton feeding hopper connected to a second carding machine, and a second lapping machine connected to the second carding machine. A core produced by the apparatus is as highly absorbent and excellent in guiding a liquid as a core made from wood pulp, is as thin and resistant to separation as a composite core. Cotton and non-woven fabric are interwoven, such that no glue needs to be applied while ensuring product quality.

Description

Equipment for preparing glueless needle-punched absorbent core

Technical field

This application relates to the field of personal hygiene products, and in particular to a device for preparing a non-glue needled absorbent core.

Background technique

At present, the cores of sanitary products are mainly divided into two categories: wood pulp cores and composite cores: wood pulp cores are formed by mixing fluff pulp and polymer water-absorbent resin (SAP) without layering or partitioning. Wood pulp cores The water absorption effect of the body is good, but because its structure is relatively loose, no adhesive is added, and the fluff pulp and SAP cannot be fixed, so there will be lumps and faults during use; the composite core is made of dust-free paper, non-woven It is composed of cloth and SAP, and each layer of material is bonded with hot melt adhesive. The core contains a large amount of SAP to ensure the water absorption of the diaper. After absorbing water, the whole swells, and it is flat and not lumpy. The disadvantage of using a composite core is that the process is more complicated, the equipment production speed is low, and the cost is higher than that of the traditional core. At the same time, due to the large amount of sizing in the composite core, harmful substances such as formaldehyde and volatile organic compounds will be introduced during the production process, which will affect the health of users.

Utility model content

This application combines the high absorption and strong flow conductivity characteristics of the wood pulp core and the advantages of the ultra-thin continuous layer of the composite core. Through the interweaving of cotton and non-woven fabrics, the product quality is guaranteed to achieve high quality. The purpose of sizing. This application develops the following preparation equipment for the preparation of the continuous layer core:

A preparation of a non-glue needle-punched absorbent core, which is characterized in that the equipment includes an opener, a first vacuum cotton feeder, a first carding machine, a first netting machine, a dusting machine, and a barb machine which are connected in sequence , The second netting machine, dusting machine, puncture machine, drying box, laminating machine and winder, also including the second vacuum cotton feeder connected to the opener, and the second vacuum cotton feed box connected to the second carding machine , The second carding machine is connected to the second netting machine.

The first netting machine lays the cotton netting on the bottom non-woven fabric.

The second netting machine lays the cotton netting on the upper side of the cotton netting needled by the barbed machine.

After the second netting machine and before the punching machine, it also includes a device for setting the upper non-woven fabric on the cotton mesh.

The duster dusts super absorbent resin particles.

What the opener opens is cotton fiber.

A preparation of a non-adhesive needle-punched absorbent core, which is characterized in that the equipment includes an opener, a first vacuum cotton feeder, a first carding machine, a first netting machine, a dusting machine, and a second spreader that are connected in sequence. The net machine, the punching machine or/and the barb machine, the drying box, the compound machine and the winder, also include the second vacuum cotton feeder connected to the opener, the second vacuum cotton feeder is connected to the second carding machine, and the second vacuum cotton feeder is connected to the second carding machine. The second carding machine is connected to the second netting machine.

It also includes a three-roll mixer that feeds the opening machine. The three-roll mixer received includes an infeed conveyor belt. A plurality of automatic unloaders are sequentially arranged in the conveying direction of the conveying belt of the infeed conveyor belt. Conveyor belt feeding.

Beneficial effects:

Through the transformation of the existing carding equipment, the carding netting is controlled to achieve low-quantity molding, forming a cotton net (with a basis weight of about 60g/m ² ), and laying it on the bottom non-woven fabric. Combined with the application of the existing composite core powder spreader, water-absorbent resin is sprayed quantitatively on the cotton mesh. The needle punching process uses the inherent characteristics of cotton needle barbs to drive the cotton fibers inside the mesh to interweave with the underlying non-woven fabric, and at the same time achieve the purpose of dispersing the water-absorbing resin and achieving uniform distribution. Using a barbed machine to perform acupuncture first, compared with the existing positive-needling machine, the pre-needling can significantly improve the uniformity of the mixing of particles and cotton fibers, and significantly improve the foam or bulkiness of the product, which is beneficial to the absorption and storage of liquid The body is conducive to air flow.

On the basis of forming the underlying structure, repeat the processes of spreading cotton, dusting, laying surface non-woven fabrics, and needle punching, so that the surface structure and the underlying structure are combined to form a glue-free cotton interwoven composite core. manufacture.

Through the needle punching process, the bottom non-woven fabric is interwoven and combined with the cotton mesh fabric. The traditional composite core sizing process is no longer used, and the presence of chemical substances in the product is reduced again, no hot melt adhesive is contained, and it is more environmentally friendly (only in the product There is a small amount of particulate water-absorbing resin).

The product contains less harmful substances (it has reached no glue), the water-absorbent resin is reduced (saving), and most of the raw materials of the product are degradable (except for the water-absorbent resin, which has poor degradability).

This process belongs to process creation and new product development. Most of the production equipment used in the process has been maturely used in the field of cotton product production. The key point is the adjustment of equipment parameters and the exploration of needle punch density and speed.

This program is the research result of a new generation of sanitary product cores, which fully considers the raw material site, product characteristics, consumer needs, and conducts sufficient research from the aspects of environmental protection and resource utilization.

As an important agricultural product resource in my country, cotton is grown in large quantities in Xinjiang and other places in my country, with large annual output and excellent quality. However, in the application of materials in the textile industry, in recent years, it has been biased towards the application of chemical fibers, which has led to an oversupply of cotton in my country, which has seriously affected the economic income of cotton growers and brought unnecessary social conflicts. Cotton has the characteristics of short planting cycle, long fiber and good water absorption effect. The water absorption of cotton of the same volume is several times that of wood pulp. Cotton is used as an absorbent core in sanitary products, which can give full play to its softness, naturalness and water absorption. , High strength and other features.

The ratio of cotton and water-absorbent resin can be used for high absorption and rapid water retention. Using the cotton fiber interweaving process, the cotton is used as the main structure of the water-absorbing resin to reduce the occurrence of faults during the use of sanitary products. The application of cotton acupuncture technology and the use of a large amount of lower adhesive glue reduces the possible skin irritation and the release of toxic and harmful substances during the use of sanitary products. At the same time, the process takes advantage of the high water absorption effect of cotton, reduces the use ratio of water-absorbing resin, greatly reduces the natural decomposition cycle of waste sanitary products, and contributes to the protection of the ecological environment and the development of the green sanitary products industry.

Change characteristics of process flow and optimization of products:

1. After the process is changed, the manpower of the production line can be reduced by 2 people, the automatic is higher, the automatic proportioning weight, automatic feeding, automatic opening of the raw materials, and then conveying to the next process;

2. After the process is changed, the raw material weight ratio is more accurate. Because of the automatic electronic weighing system, the error of each raw material ratio is ±10 grams, which exceeds the accuracy required by the product;

3. After changing the process, the mixing uniformity of several layers of raw materials is better, and there is a fully automatic mixing system to make the mixing of several raw materials of the product reach higher standards.

Description of the drawings

Fig. 1 is a schematic diagram of an embodiment of the present application.

Detailed ways

This application combines the high absorption and strong flow characteristics of the wood pulp core and the advantages of the ultra-thin and continuous layer of the composite core. Through the interweaving of cotton and non-woven fabrics, it achieves the highest quality under the premise of ensuring excellent product quality. The purpose of sizing. This application develops the following preparation equipment for the preparation of the continuous layer core:

A preparation of a non-glue needle-punched absorbent core, which is characterized in that the equipment includes an opener, a first vacuum cotton feeder, a first carding machine, a first netting machine, a dusting machine, and a barb machine which are connected in sequence , The second netting machine, dusting machine, puncturing machine, drying box, laminating machine and winder, also including the second vacuum feeding machine connected to the opener, and the second vacuum feeding box connected to the second carding machine , The second carding machine is connected to the second netting machine.

After the second netting machine and before the puncturing machine, it also includes a device for setting the upper non-woven fabric on the cotton net sheet.

The duster dusts super absorbent resin particles.

What the opener opens is cotton fiber.

Beneficial effects:

Through the transformation of the existing carding equipment, the carding netting is controlled to achieve low-quantity molding, forming a cotton net (with a basis weight of about 60g/m ² ), and laying it on the bottom non-woven fabric. Combined with the application of the existing composite core powder spreader, water-absorbent resin is sprayed quantitatively on the cotton mesh. The needle punching process uses the inherent characteristics of cotton needle barbs to drive the cotton fibers inside the mesh to interweave with the underlying non-woven fabric, and at the same time achieve the purpose of dispersing the water-absorbing resin and achieving uniform distribution.

As an important agricultural product resource in my country, cotton is grown in large quantities in Xinjiang and other places in my country, with large annual output and excellent quality. However, in the application of materials in the textile industry, in recent years, it has been biased towards the application of chemical fibers, which has led to an oversupply of cotton in my country, which has seriously affected the economic income of cotton growers and brought unnecessary social conflicts. Cotton has the characteristics of short planting cycle, long fiber and good water absorption effect. The water absorption of cotton of the same volume is several times that of wood pulp. Cotton is used as an absorbent core in sanitary products, which can give full play to its softness, naturalness and water absorption. , High strength and other characteristics.

Claims

A preparation of a non-adhesive needle-punched absorbent core, which is characterized in that the equipment includes an opener, a first vacuum cotton feeder, a first carding machine, a first netting machine, a dusting machine, and a barb machine which are connected in sequence , The second netting machine, dusting machine, puncture machine, drying box, laminating machine and winder, also including the second vacuum cotton feeder connected to the opener, and the second vacuum cotton feed box connected to the second carding machine , The second carding machine is connected to the second netting machine.
The preparation of a non-adhesive needle-punched absorbent core according to claim 1, wherein the first netting machine lays the cotton netting on the bottom non-woven fabric.
The preparation of a non-glue needle-punched absorbent core according to claim 1, wherein the second netting machine lays the cotton netting on the upper side of the cotton netting needled by the barbed machine.
The preparation of a non-adhesive needle-punched absorbent core according to claim 1, further comprising a device for placing the upper non-woven fabric on the cotton mesh sheet after the second meshing machine and before the directing machine.
The preparation of a non-adhesive needle-punched absorbent core according to claim 1, wherein the dusting machine sprinkles super absorbent resin particles.
The preparation of a non-glue needle-punched absorbent core according to claim 1, wherein the opener opens cotton fibers.
A preparation of a non-adhesive needle-punched absorbent core, which is characterized in that the equipment includes an opener, a first vacuum cotton feeder, a first carding machine, a first netting machine, a dusting machine, and a second spreader that are connected in sequence. The net machine, the punching machine or/and the barb machine, the drying box, the compound machine and the winder, also include the second vacuum cotton feeder connected to the opener, the second vacuum cotton feeder is connected to the second carding machine, and the second vacuum cotton feeder is connected to the second carding machine. The second carding machine is connected to the second netting machine.
The dependent claim of any one of claims 1-7, further comprising a three-roll mixer for feeding the opener, the received three-roll mixer includes a feeding conveyor belt, and a plurality of automatic unloaders are arranged in sequence Feed the feeding conveyor belt in the conveying direction of the feeding conveyor belt.