JPH09122172A - Integrated bond material of gauze and absorbent cotton and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To embody an integrated bond material suitable for use as an absorbent material, etc., for medical treatment by integrating gauze and absorbent cotton without impairing the characteristics of both. SOLUTION: The integrated bond material 1 of the gauze and the absorbent cotton consists of the laminated structure of the gauze 2 and the absorbent cotton 3 and has the structure obtd. by integrating the fibers 3a constituting the absorbent cotton 3 with the fibers (yarn) 2a, 2b constituting the gauze 2 in a mechanically entangled dense state. Such entanglement of the fibers is embodied by subjecting the gauze 2 and the absorbent cotton 3 in the laminated state to punching using needles, etc. The integrated bond material 1 has good water absorptivity and water retaining property and has the strength against peeling of the gauze from the absorbent cotton and tensile strength and the fibers at the cut surfaces are hardly loosened. The material is, therefore, suitable for use as the absorbent material for medical treatment to be applied on the lesion, etc.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a medical hygiene material,
The present invention relates to an integrated binding material for gauze and absorbent cotton that can be used for daily cleaning materials, hygienic filters, nursing care products, baby products, etc. The present invention also relates to a method of manufacturing this integrated binder.

[0002]

2. Description of the Related Art Absorbent cotton and gauze are frequently used as medical hygiene materials. Absorbent cotton has excellent water absorbency and blood absorbency, but if it is directly applied to a wound or the like, it has a harmful effect such as sticking to it. In addition, it easily fluffs and has low tensile strength. On the other hand, gauze is inferior in water absorbency and blood absorbability to absorbent cotton, but is less likely to stick to a wound, less fluffy, and has higher tensile strength. In addition, when the gauze is used after being cut, there is a problem that warp threads and weft threads are generated as strip-like scraps on the cut surface.

For this reason, conventionally, absorbent cotton and gauze have been used properly according to the application. Or,
For medical purposes, absorbent cotton wrapped with gauze is used as a patch for contacting the trauma or the surgical site after surgery.

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

[0005]

However, since the whole is not integrated by simply stacking the gauze and the absorbent cotton in this way, for example, the cut surface of the gauze remains in a state where the threads are loosened or easily separated. . In addition, since both are not integrated, the water absorbing effect and blood absorbing effect of the absorbent cotton on the inside are also hindered by the gauze covering the outside. Therefore, even if these different materials are combined, the advantages of both cannot be fully utilized and the drawbacks of both are directly exhibited by the method of simply stacking them, which is not preferable.

Further, as shown in FIG. 7 (B), when the 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 the affected area or the like. The harmful effect of not occurring also occurs.

Of course, it is conceivable to integrate the gauze and the absorbent cotton by using a binder such as an adhesive, but in this case, the boundary surfaces of both materials are simply bonded, so that the advantages of both are obtained. It is not preferable because it cannot be utilized, and when the adhesive surface is formed, there is a problem that water absorption, water retention and the like decrease.

An object of the present invention is to propose an integrated binder having both advantages by integrating the gauze and the absorbent cotton as a whole by paying attention to such conventional problems. The present invention also proposes a manufacturing method suitable for manufacturing this integrated binder.

[0009]

In order to solve the above problems, an integrated binding material for gauze and absorbent cotton according to the present invention comprises at least one layer of gauze and absorbent cotton laminated on at least one surface of this gauze. And the warp and the weft constituting the gauze are entangled with the cotton fibers constituting the absorbent cotton to obtain 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. On the contrary, a structure in which one layer of gauze is sandwiched between two layers of the absorbent cotton can be adopted.

In the integrated binding material for gauze and absorbent cotton of the present invention thus constructed, the fibers of the constituent gauze and the fibers of absorbent cotton are mechanically entangled with each other as a whole. Therefore, overall water absorption, blood absorption,
The water-retaining property and the like have the characteristics that the absorbent cotton has, and the fluffiness and the tensile strength have the characteristics that the gauze has. Further, since both are integrally entangled with each other, it is difficult to cause a problem such as frayed gauze fibers on the cut surface. In addition to this, by adjusting the degree to which both materials are mechanically entangled, the characteristics of the obtained integrated bonding material can be made desired.

Next, as a method for constructing 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 the gauze material before the scouring and bleaching step is formed. Prepare a absorbent cotton material, form a laminated material by stacking the gauze material and the absorbent cotton material on each other, and punch the laminated material with a needle in the thickness direction to configure the gauze material. And the fibers constituting the absorbent cotton material are mechanically entangled to be integrated, and the integrated laminated material is subjected to at least scouring of scouring and bleaching.

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

In the method of the present invention, the gauze material and the absorbent cotton material in the stage before the scouring and bleaching are integrated with each other, and then these are scouring and bleaching. In the state before scouring and bleaching, since fats and oils are attached to the material, it is easy to pass through the needle or the like, so that punching work can be easily performed.

In addition, the integrated material undergoes a scouring and bleaching step and a subsequent drying step to improve the entangled state between the fibers of the integrated material, and the needle holes generated during the entanglement are Disappears during the process of.

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

[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, a gauze (10 to 45 pieces per square centimeter) 2 of absorbent cotton (50 g / m 2 to 300 g / m 2) is overlaid 3 and both are physically intertwined to form an integrated bonding material 1. It is manufactured. Due to the structure, the cotton fiber 3a on the absorbent cotton side slightly comes out from the gap of the gauze texture, and the warp 2 of the gauze 2
a, entwined with the weft 2b. Thus, in this example, no adhesive agent or the like is used for integration.

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

By such punching, as shown in FIG.
As shown in Fig. 3, the fibers 3a of the absorbent cotton material 31 at the portion where the needle 4 has been pierced are extruded from the textures of the warp threads 2a and the weft threads 2b forming the gauze material 21 and mechanically applied to these threads 2a, 2b. It becomes intertwined with.

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

Here, the gauze after the scouring and bleaching and the absorbent cotton may be superposed and then punched to integrate them. However, fully exposed cotton does not slide well and the needle does not pass easily. In some cases, the needle will be damaged. Originally, cotton has oils and fats, wax, etc., and the ones without the oils and fats are absorbent cotton. Therefore, if you do punching with the gauze material that has not been subjected to the scouring and bleaching process in the state where the oils and fats are still attached, since the oils and fats are attached to them, the needle can pass through the punching operation. You can do it properly.

By passing through a scouring bleaching and drying process after punching, the entangled state between the fibers of the gauze and the absorbent cotton is improved and the needle hole is eliminated.

Of course, when the gauze after the scouring and bleaching and the absorbent cotton are piled up and punched with a needle, an oil agent or the like may be added, but in this case, an oil agent adding step and a subsequent washing step are further required. Becomes The most hygienic product can be obtained by finally scouring and bleaching.

Next, FIG. 3 shows a layer structure of the integrated binder 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 of the base material and integrated. In the example shown in FIG. 3B, absorbent cotton 3 is sandwiched and gauze 2A and 2B are laminated on both sides of the absorbent cotton 3 to be integrated. In the example shown in FIG. 3 (C), absorbent cotton 3A and 3B are laminated and integrated on both sides of the gauze 2, respectively.

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

Here, the punching state will be described. By changing the punching density, the binding strength between the gauze 2 and the absorbent cotton 3 in the integrated binding material 1 can be adjusted,
Also, its water absorption, water retention characteristics, and mechanical strength can be adjusted.
Even with the same integrated binder 1, the punching density can be partially changed by the arrangement of the needles.

In FIG. 4 (A), in the lengthwise direction of the integrated bonding material 1, a portion along the planned cutting position (the position shown by the broken line in the drawing) 1A in the width direction is punched at a high density. Other parts are punched at a lower density. By doing this, when cutting along the cutting position, the gauze 2 and the absorbent cotton 3 are firmly integrated at the cut surface portion, so that fibers are frayed from the cut surface and fiber scraps 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.

Next, a method for producing the integrated binding material 1 of gauze and absorbent cotton of this example will be described.

FIG. 5A shows a manufacturing process of the absorbent cotton material 31 before being scoured and bleached. As shown in this figure, first, a raw cotton (raw cotton) is prepared (step ST1), and this is put on a kneading cotton machine to remove seeds, stems, foreign substances and the like (step ST2). Next, the cotton from which foreign substances and the like have been removed is hung on a carding machine (step ST3), and the direction of the fibers is aligned to obtain a uniform and thin strip-shaped cotton web (greasy cotton material) 31 (step ST4). Instead of using a carding machine, the cotton web may be formed by using the air laying method.

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

When forming the laminated body 11 of the gauze material 21 and the absorbent cotton material 31, for example, the gauze material 21 is spread on the conveyor 51 as shown in FIG. The number of absorbent cotton materials 31 may be overlapped. If necessary, the number of superposed cotton wool materials 31 may be adjusted. The laminated material 11 formed in this way is, for example, the needle bunching machine 5 as described above.
Then, the laminated material 11 is conveyed to the sheet 2, and punched on the laminated material 11 from the upper side or the lower side using a large number of needles having protrusions. 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, referring again to FIG. 5 (B), when the integrated laminated material 11 is thick, for example, about 15 mm or more, it is a single sheet and is made of a net-like porous material through a water absorption / pressing process. Wrap it around a stainless steel beam (step ST7). However, if the gauze material 21 is thinner than this, stack two or more laminated materials 11 together,
Wrap it around the beam together. At the time of this wrapping, moisture and pressing force are applied, and it is firm due to some tension, and
It is desirable to wind as much as possible.

The laminated material 1 thus wound in a roll shape
No. 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 end of the outer periphery and dried by hot air (step ST9). Finally, by cutting to a predetermined length (step ST10), the integrated bonding material 1 as the final product is obtained.

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

[0037]

As described above, the integrated binding material for gauze and absorbent cotton according to the present invention has a structure in which the 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 is suitable for use as a medical absorbent or the like. That is, the integrated binding material of the present invention has high bonding strength, small elasticity, less fraying of gauze on the cut surface, reinforced absorbent cotton, and fluffing of the surface is suppressed by entanglement of fibers of the absorbent cotton itself. The advantage of not peeling is obtained. Moreover, preferable water absorption properties and water retention properties are maintained.

[Brief description of the drawings]

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

FIG. 2 is an explanatory view showing a procedure for configuring integration in the integrated binder of FIG.

FIG. 3 is a diagram showing an example of a layered 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 binder of the present invention.

FIG. 5 is a schematic process drawing showing a manufacturing process of the integrated binding material of the present invention.

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

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

[Explanation of symbols]

 1 Integrated binding material 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 (5)

[Claims] 1. A warp yarn and a weft yarn constituting at least one layer of gauze and absorbent cotton laminated on at least one surface of the gauze, wherein the cotton fiber constituting the absorbent cotton is An integrated binding material for gauze and absorbent cotton, characterized by being entangled to form an integrated structure. 2. The integrated binding material according to claim 1, which has two layers of the gauze and the absorbent cotton which is sandwiched between the gauze and the gauze. 3. The integrated binding material according to claim 1, comprising two layers of the absorbent cotton and one layer of the gauze cotton strip sandwiched therebetween. 4. A warp and a weft yarn constituting at least one layer of gauze and absorbent cotton laminated on at least one surface of the gauze, wherein the cotton fiber constituting the absorbent cotton is A method for producing an integrated binder of gauze and absorbent cotton, which is entangled to form an integrated structure, wherein at least one layer of gauze material before the scouring and bleaching step is prepared, A strip-shaped absorbent cotton material is prepared, and the gauze material and the absorbent cotton material are overlaid on each other to form a laminated material, and the laminated material is punched with a needle in the thickness direction thereof to obtain the gauze material. Mechanically entangle the fibers constituting the above and the fibers constituting the absorbent cotton material and integrate them, and at least scouring the integrated laminated material among scouring and bleaching. Method of manufacturing integrated binder and having a degree. 5. The method for manufacturing an integrated binder according to claim 4, wherein the step of integrating the laminated material is performed by a hydroentangling method instead of punching with a needle.