JP3030845B2 - Integrated binder of gauze and absorbent cotton and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a medical hygiene material,
The present invention relates to an integrated binder of gauze and absorbent cotton, which can be used for daily cleaning materials, sanitary filters, care products, baby products, and the like. The present invention also relates to a method for producing the integrated binder.

[0002]

2. Description of the Related Art Absorbent cotton and gauze are widely used as medical hygiene materials. Although absorbent cotton is excellent in water absorbency and blood absorbency, if it is directly applied to a wound or the like, it has a disadvantage such as sticking there. Also, it is easy to fluff and has low tensile strength. On the other hand, gauze is inferior to absorbent cotton in water absorbency and blood absorbency, but is less likely to be injured, less fuzzy, and has higher tensile strength. Further, when the gauze is cut and used, there is also a problem that the warp and the weft are generated as strip-like waste on the cut surface.

[0003] For this reason, conventionally, absorbent cotton and gauze have been properly used depending on the application. Or,
For medical use, a cloth wrapped with absorbent cotton in gauze is used as a patch cloth to be applied to an injured part or a surgical site after a surgical operation.

Here, when both absorbent cotton and gauze are used together in order to take advantage of both, FIG.
As shown in (A), the operation is performed with the absorbent cotton 71 simply wrapped in the gauze 72. Alternatively, as shown in FIG. 7 (B), the absorbent cotton 71 is sandwiched between gauze 72a and 72b from above and below, and both ends thereof are crimped so as not to be separated.

[0005]

However, when the gauze and the absorbent cotton are merely overlapped in this way, the whole is not integrated, so that, for example, the cut surface of the gauze remains in a state in which the yarn is easily loosened or separated. . Further, since the both are not integrated, the water absorbing effect and the blood absorbing effect of the inner absorbent cotton are also inhibited by the gauze covering the outer side. Therefore, even if these different materials are combined, a method of simply using them in an overlapping manner is not preferable because the advantages of both cannot be fully utilized and both disadvantages appear as they are.

Further, as shown in FIG. 7 (B), when a method of crimping both ends is adopted, the manufacturing cost increases, or the crimped portion 73 becomes hard, and it is preferable that this portion hits an affected part or the like. There is also the negative effect of not having.

Of course, it is conceivable to integrate the gauze and the absorbent cotton using a binder such as an adhesive. However, in this case, since the interface between the two materials is simply bonded, both advantages are obtained. It is not preferable because it cannot be used, and when the adhesive surface is formed, there is a problem that water absorption, water retention and the like are reduced.

An object of the present invention is to propose an integrated bonding material having both advantages by integrating gauze and absorbent cotton as a whole, focusing on such conventional problems. Another object of the present invention is to propose a manufacturing method suitable for manufacturing the integrated binder.

[0009]

Means for Solving the Problems In order to solve the above problems, the integrated binder of gauze and absorbent cotton of the present invention comprises at least one layer of gauze and absorbent cotton laminated on at least one surface of the gauze. The warp and the weft constituting the gauze are entangled with the cotton fibers constituting the absorbent cotton, thereby obtaining an integrated structure.

As a laminated structure of gauze and absorbent cotton, a structure in which absorbent cotton is sandwiched between two layers of gauze can be adopted. Conversely, a structure in which one layer of gauze is sandwiched between the two layers of the absorbent cotton can be adopted.

In the integrated binding material of gauze and absorbent cotton of the present invention thus constituted, the components of the gauze fibers and the absorbent cotton fibers are mechanically entangled with each other as a whole. Therefore, as a whole, water absorption, blood absorption,
The water retention and the like exhibit characteristics of absorbent cotton, and the fluffing state, tensile strength, and the like exhibit characteristics of gauze. Further, since both are integrally entangled, adverse effects such as gauze fiber fraying at the cut surface are less likely to occur. In addition, by adjusting the degree to which both materials are mechanically entangled, the properties of the resulting integrated binder can be made desired.

Next, as a method for forming an integrated structure of this structure, in the present invention, at least one layer of gauze material before the scouring and bleaching step is prepared, and at least one strip of gauze material before the scouring and bleaching step is prepared. Prepare a absorbent cotton material, form a laminated material by superimposing the gauze material and the absorbent cotton material on each other, and perform punching with a needle from the thickness direction on the laminated material to form the gauze material. And the fibers constituting the absorbent cotton material are mechanically entangled and integrated, and the integrated laminated material is subjected to at least one of refining and bleaching.

Here, in the step of integrating the laminated materials, a hydroentanglement method may be adopted instead of punching with a needle.

In the method of the present invention, the gauze material and the cotton wool material at the stage before scouring and bleaching are integrated with each other, and then they are scoured and bleached. In the state before the scouring and bleaching, since oils and fats and the like are adhered to the raw material, it is possible to easily perform the punching operation because the needle or the like is good.

Further, after the unification, a scouring bleaching step and a subsequent drying step are performed to improve the entangled state between the fibers of the integrated material. Disappears during the process.

Further, the bonding strength between the gauze and the absorbent cotton can be adjusted by changing the punching density of the needle. Similarly, by changing the pattern and density of the punching, the strength of each part in one integrated bonding material can be changed.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 conceptually shows the structure of an integrated binder of gauze and absorbent cotton produced according to the present invention. For example, an integrated bonding material 1 in which absorbent cotton (50 g / m 2 to 300 g / m 2) 3 is overlaid on coarse gauze (10 to 45 g / m 2) 2 and physically entangled with each other to be integrated. Manufactured. Due to the structure, the cotton fiber 3a on the side of the absorbent cotton slightly comes out from the gap of the gauze weave, and the warp yarn 2 of the gauze 2
a, it is entangled with the weft 2b. Thus, in this example, no adhesive or the like is used for integration.

Such mechanical entanglement of both fibers can be realized by punching the needles in their thickness direction. FIG. 2A shows an example of a needle used in a needle punching machine. As shown in this figure, the needle 4 has a large number of projections 4a formed on the outer peripheral surface of the tip. The needle 4 having this shape is used as a laminated material 11 having a structure in which an absorbent cotton material 31 before bleaching and scouring is overlapped with a gauze material 21 before scouring and bleaching.
Is pierced in the thickness direction.

By such punching, FIG.
As shown in the figure, the fiber 3a of the absorbent cotton material 31 at the portion where the needle 4 is pierced is extruded from the texture of the warp yarn 2a and the weft yarn 2b constituting the gauze material 21, and the yarn 2a, 2b It becomes a state intertwined with.

By performing punching at a predetermined density, as shown in FIG. 2 (C), a state is formed in which the fibers of both the gauze material 21 and the absorbent cotton material 31 are closely entangled with each other. That is, both materials are integrated.

Here, the gauze after the scouring and bleaching and the absorbent cotton may be overlapped and then punched to integrate them. However, fully exposed cotton has poor slippage and poor needle passage. In some cases, the needle is broken. Originally, cotton is provided with fats and oils, wax and the like, and the cotton except for the fats and oils is absorbent cotton. Then, if the grease material that has not been subjected to the scouring and bleaching process is also punched in a state where the grease is attached, if the grease is adhered to the gauze material, the needle is good and the punching operation is good. Can be done properly.

Further, by passing through a scouring bleaching and drying step after punching, the entangled state between the gauze and the absorbent cotton fibers is improved, and the needle holes are eliminated.

Needless to say, when the gauze after scouring and bleaching and the absorbent cotton are overlapped and punched with a needle, an oil agent or the like may be added. However, in this case, an oil agent adding step and a subsequent washing step are further required. Becomes Ultimately, the most hygienic products can be obtained by scouring and bleaching.

Next, FIG. 3 shows a layer structure of the integrated bonding material 1 which can be manufactured according to the present invention. In the example shown in FIG. 3 (A), gauze 2 is used as a base material, and absorbent cotton 3 is laminated on one surface thereof to be integrated. In the example shown in FIG. 3 (B), absorbent cotton 3 is sandwiched, and gauze 2A, 2B is laminated and integrated on both sides thereof. In the example shown in FIG. 3C, absorbent cottons 3A and 3B are laminated on both surfaces of the gauze 2, respectively, and integrated.

On the other hand, instead of punching using a needle, gauze material and absorbent cotton material may be punched using a high-pressure jet water stream.

Here, the state of punching will be described. By changing the punching density, the bonding strength between the gauze 2 and the absorbent cotton 3 in the integrated bonding material 1 can be adjusted,
In addition, its water absorption, water retention properties, and mechanical strength can be adjusted.
Further, even in the same integrated bonding material 1, the punching density can be partially changed depending on the arrangement of the needles.

In FIG. 4 (A), high-density punching is performed on a portion along a cut position (position indicated by a broken line in the drawing) 1A in the width direction in the length direction of the integrated bonding material 1, Other parts are punched at a lower density. In this way, when cut along the cutting position, since the gauze 2 and the absorbent cotton 3 are firmly integrated at the cut surface, the fibers are frayed from the cut surface, and fiber waste and the like are generated. Can be prevented. The examples shown in FIGS. 4B and 4C show a case where the punching density is coarse and a case where the punching density is higher than that, respectively.

Next, a method of manufacturing the integrated binder 1 of gauze and absorbent cotton according to the present embodiment will be described.

FIG. 5A shows a manufacturing process of the absorbent cotton material 31 before scouring and bleaching. As shown in this figure, first, cotton (raw cotton) as a raw material is prepared (step ST1), and this is set on a blending cotton machine to remove seeds, stems, foreign matter, and the like (step ST2). Next, the cotton from which the foreign matters and the like have been removed is put on a carding machine (step ST3) to obtain a uniform and thin belt-shaped cotton web (absorbent cotton material) 31 with the fibers aligned (step ST4). Instead of using a carding machine, a cotton web may be formed by using an air lay method.

Next, as shown in FIG. 5 (B), the raw gauze (the one which has not been subjected to the scouring and bleaching step) is mixed with the gauze material 2.
1. Absorbent cotton material 31 prepared as above and manufactured as described above
(Step ST5). This laminate 11
Is conveyed to a needle punching machine or the like to perform punching (step ST6). At this time, by selecting the type, position, and density of the needle, the characteristics of the obtained integrated binder 1 can be adjusted. For example, it is possible to select a needle that can suppress the damage of the gauze due to the needle, or to select a needle that puts the main force on confounding.

When the laminated body 11 of the gauze material 21 and the absorbent cotton material 31 is formed, for example, as shown in FIG. 6, the gauze material 21 is spread on a conveyor 51, and an arbitrary What is necessary is just to overlap the number of absorbent cotton materials 31. The number of superposed absorbent cotton materials 31 may be adjusted as needed. As described above, the laminated material 11 formed in this way is, for example, a needle bunching machine 5
The sheet is conveyed to 2, and the laminated material 11 is punched from above or from below using a large number of needles having projections. By this punching, as described with reference to FIG. 1 or FIG. 2, the fibers of both materials are mechanically entangled and integrated as a whole.

Next, in FIG. 5B again, when the integrated laminated material 11 is thick, for example, when it is about 15 mm or more, it is necessary to use a single piece of the laminated material 11 through a water absorbing / pressing step. Wind around a stainless steel beam (step ST7). However, when the gauze material 21 is thinner than this, two or more laminated materials 11 are overlapped,
Wrap it around the beam together. At the time of this winding, it is hard,
It is desirable to wind as much as possible.

The laminated material 1 thus wound into a roll shape
1 is scoured and bleached, and if necessary, dyeing or the like is performed (step ST8).

Next, the laminated material 11 is sequentially pressed or vacuum-dehydrated from the terminal on the outer periphery and dried with hot air (step ST9). Finally, by cutting into a predetermined length (step ST10), an integrated binder 1 as a final product is obtained.

According to a test by the present inventor, when about 120 g / parallel cotton wool is overlapped with 60 gauze pieces and the needles are processed at a low density of about 5 needles / parallel centimeter, the joining of the gauze and cotton wool is performed. It was confirmed that a strength of about 150 grams (50 mm width) was obtained.

[0037]

As described above, the integrated binder of gauze and absorbent cotton of the present invention has a structure in which mutual fibers are mechanically entangled and integrated between the gauze and absorbent cotton. Therefore, it is possible to obtain an integrated binder that does not impair the advantages of both materials, and it is suitable for use as a medical absorbent or the like. That is, the integrated bonding material of the present invention has high bonding strength, low elasticity, little fraying of gauze on the cut surface, reinforcement of absorbent cotton, and suppression of fuzz on the surface due to entanglement of fibers of the absorbent cotton itself. The advantage of not peeling is obtained. In addition, suitable water absorption characteristics and water retention characteristics are maintained.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the structure of an integrated binder manufactured according to the present invention.

FIG. 2 is an explanatory view showing a procedure for configuring integration in the integrated bonding material of FIG. 1;

FIG. 3 is a diagram showing an example of a layer structure of an integrated binder according to the present invention.

FIG. 4 is a diagram showing an example of a punching pattern applicable to the integrated bonding material of the present invention.

FIG. 5 is a schematic process chart showing a manufacturing process of the integrated binder of the present invention.

FIG. 6 is an explanatory view showing a manufacturing process centering on a punching process in FIG. 5;

FIG. 7 is an explanatory view showing a combination state of a conventional gauze and absorbent cotton.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Integrated binder 2 Gauze 2a, 2b Gauze thread 21 Gauze material 3 Absorbent cotton 3a Absorbent cotton fiber 31 Absorbent cotton material 4 Needle 11 Laminated material

Claims (4)

(57) [Claims] 1. A has a gauze of at least one layer, and absorbent cotton laminated on at least one surface of the gauze, this
Pan with a needle from the thickness direction of these gauze and absorbent cotton
By performing the ching, the cotton yarn constituting the absorbent cotton is entangled with the warp and the weft constituting the gauze to form an integrated structure, and the gauze and the absorbent cotton are integrated. Binder. 2. The integrated bonding material according to claim 1, comprising: two layers of the gauze; and the absorbent cotton disposed between the gauze and the gauze. 3. The gauze according to claim 1, wherein two layers of said absorbent cotton and said gauze interposed therebetween.
And an integrated binder. 4. At least one layer of gauze, and absorbent cotton laminated on at least one surface of the gauze, wherein the cotton fibers constituting the absorbent cotton are added to the warp and weft constituting the gauze. A method for producing an integrated binder of gauze and absorbent cotton, wherein the integrated structure is formed by entanglement, wherein at least one layer of gauze material before the scouring and bleaching step is prepared, and at least one sheet of the gauze material before the scouring and bleaching step is prepared. A band-shaped absorbent cotton material is prepared, the gauze material and the absorbent cotton material are superimposed on each other to form a laminated material, and the laminated material is punched with a needle from a thickness direction thereof, thereby forming the gauze material. And the fibers constituting the absorbent cotton material are mechanically entangled and integrated, and the integrated laminated material is scoured at least among scouring and bleaching. Method of manufacturing integrated binder and having a degree.