JPS6044935B2 - Method of manufacturing sanitary absorbent material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a sanitary absorbent material for absorbing and treating excreta such as menstrual blood and urine.

Conventionally, pulverized pulp (cotton-like or defibrated pulp, the same applies hereinafter)
is flexible and inexpensive, and the powdered polymer, which is water-insoluble and has water-swelling properties, has high absorption and retention properties, so the two are mixed and used as sanitary absorbent materials.

However, since this mixture is simply mixed and there is no integral bonding relationship between the two, there was a problem in the absorption function. In other words, the pulverized pulp has a low liquid retention property, and when it is accumulated in a layered material, the liquid dispersion property in the surface direction is low, and the polymer has a low absorption rate. If there is no integral bonding relationship between the two, the liquid diffusivity and absorption rate will not improve much compared to when each is used alone, and furthermore, when handling or using, are released from each other. The purpose of the present invention is to mix the pulverized pulp and the polymer without using a special binder, and to combine the two integrally.
The object of the present invention is to provide a highly efficient, simple, and inexpensive method for producing sanitary absorbent materials that have excellent effects such as significantly improving liquid diffusivity and absorption rate due to the synergistic action of both.

The embodiments of the present invention will be described with reference to the drawings.
It is as follows.

In the figure, 1 is a supply roll for a pulp sheet 2 made of wood, 3 is a humidifying device, 4 is a crushing device, and 5 is a support sheet 6.
7 is a supply roll, and 7 is a take-up roll for the sanitary absorbent material of the present invention.

The device 4 includes a body 8, a conveyor 10 with one end facing the rear opening 9, a guide roll 11 disposed on one end of the conveyor 10, and a crushed garnet roll 12 disposed in the upper part of the body 8. , a supply hopper 14 for the powder polymer 13 that is water-insoluble and has water-swelling properties, which is placed in the front center of the body 8, a net roll 15, which is placed in the opening on the lower surface of the body 10, and a suction device 16, which is placed therein. , a guide roll 17 disposed on the front side of the lower opening of the body 10, and a conveyor 18 disposed on the front side of the roll 15. The present invention is manufactured using such an apparatus. First, a dry valve sheet 2 fed out from a roll 1 is guided to an apparatus 3 by a conveyor 10, and a weight of 10 to 5 pieces is applied to the sheet 2. Spray and absorb % moisture.

This sheet 2 is introduced into the opening 9 of the machine body 8, and the sheet 2 is brought into contact with the roll 12 and crushed. This crushed valve (
In the same way as the fibers (hereinafter the same applies) 2a are dropped and scattered into the lower chamber 19 of the machine body 8, powdered polymer 13 is supplied from the hopper 14, dropped and scattered, and mixed with the crushing valve 2a, and these mixtures 20 are passed from the roll 5 to the roll 15. The laminate 21 is laminated to an appropriate thickness on a support sheet 6 fed out onto a device 16 (see FIG. 3), and this laminate 21 is transported by a conveyor 18 and wound onto a winding roll 7. The support sheet 6 is not particularly limited, and may be a valve seat made of wood, a nonwoven fabric made of natural or artificial fiber, or the like.

According to the present invention, the crushing valve 2a that has absorbed moisture is dropped and scattered into the lower chamber 19 of the fuselage 8, and at the same time, the lower chamber 19
By supplying the powdered polymer 13 to the lower chamber 19, causing it to fall and scatter and collide with the crushing valve 2a, both 2
a, 13 can be mixed substantially uniformly, and the powder polymer 13 and the crushing valve 2a are integrally bonded by the adhesiveness of the powdered polymer 13 generated by contacting the crushing valve 2a that has absorbed water. Moreover, the laminate 21 can be formed by dropping this mixture 20 (see FIG. 4) onto the support sheet 36 and stacking it in a fixed manner.

Since the present invention employs the manufacturing method described above, it has the advantage of being able to be mass-produced easily and inexpensively with high efficiency.

EXAMPLE The method of the present invention was carried out using the apparatus shown in FIGS. 1 and 2.

That is, supply roll 1 to 47T7. The valve seat 2 of 600y1rI1 dried at the speed of ISec is guided to the device 3 by the conveyor 10, and the valve seat 2 is 10%
The water was dispersed and absorbed. Then, the valve seat 2 is guided to the opening 9 of the machine body 8 via the guide roll 11, brought into contact with the garnet roll 12, and crushed, and the crushed valve 2a is dropped and scattered into the lower chamber 19 of the machine body 8, and at the same time,
The powdered polymer 13 was dropped from the hopper 14 at a rate of 1k91 sec and mixed with the crushing valve. This mixture 20 is transferred from the supply roll 5 to the net roll 15 to the suction device 1.
6 (suction pressure 3001q) 100% rayon drawn out on top
Scattered and laminated on a support sheet 6 of non-binder nonwoven fabric,
This laminate was transferred by a conveyor 18 while being lightly pressed by a guide roll 17 and wound onto a winding roll 7. In the thus obtained mixture 20 of the laminate 21, as shown in FIG. 4, the pulverized bulbs and the powdered polymer are substantially uniformly mixed, and the mixture 20 is integrally bonded and collapsed by the adhesive force due to absorption of the powdered polymer. It was confirmed that the film was fixed on the support sheet while maintaining its layered form.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the steps and arrangement of devices for carrying out the present invention. FIG. 2 is a detailed view of the crushing device section. FIG. 3 is a sectional view of the sanitary absorbent material obtained by the present invention. FIG. 4 is a schematic diagram showing the mixing and bonding relationship between the crushing valve and the powdered polymer. 2◆◆●◆●● Valve seat, 2a・day◆◆Crushing valve, 4... Humidifier, 6... Support sheet,
8... Garnet roll, 13... Powder polymer, 14... Powder polymer supply hopper, 19... Lower chamber, 20... Mixture, 21
...Laminated body.

Claims (1)

[Claims] 1. After absorbing water into a pulp sheet, this sheet is continuously introduced into a crushing device and crushed, and at the same time, the crushed pulp is dropped and scattered into the lower chamber of the device. A powdered polymer that is water-insoluble and has water-swelling properties is continuously supplied to the chamber, and is caused to fall and scatter to collide with the pulverized pulp, thereby substantially uniformly mixing the pulverized pulp and the powdered polymer, and removing the water content. The pulverized pulp and powdered polymer are integrally bonded together by the adhesiveness of the powdered polymer that is generated when the pulverized pulp absorbs the pulverized pulp.
A method for producing a sanitary absorbent material, characterized in that a laminate is formed by dropping these mixtures onto a support sheet that continuously leads to the bottom of the chamber and stacking them in a fixed manner. 2. The method for producing a sanitary absorbent material according to claim 1, wherein the pulp sheet absorbs 10 to 50% by weight of water.