KR101426740B1 - Dressing containing punched adhesive film and its manufacturing method - Google Patents

Abstract

The present invention relates to a dressing material laminated with an adhesive film and to a method for manufacturing the same and, more particularly, to a dressing material laminated with an adhesive film and to a method for manufacturing the same in which the adhesive film having multiple punched through-holes or a film having multiple punched through-holes is laminated on one outer side surface of the dressing material which is used for wound dressing so that injury exacerbation can be effectively prevented, healing can be performed quickly, and secondary damage can be effectively prevented. The present invention is configured to have an absorbing material that absorbs an exudation and a protective film that is laminated on an upper surface of the absorbing material. The adhesive film, in which the multiple through-holes are vertically formed, is laminated on a bottom surface of the absorbing material, and release paper is formed on a bottom surface of the adhesive film. According to the present invention having such configuration, problems found in prior art can be addressed, and the physical properties of the present invention are more excellent than those of expensive dressing material of the prior art. Also, the present invention can provide a novel type of dressing material for wound dressing that can facilitate molding into various sizes and shapes.

Description

[0001] The present invention relates to a dressing material comprising a pressure-sensitive adhesive film,

More particularly, the present invention relates to a dressing material having a plurality of through holes perforated on an outer surface of a dressing material used for wound dressing, The present invention relates to a dressing material comprising a pressure-sensitive adhesive film and a method for producing the dressing material, which is capable of effectively preventing the curing of the curing agent and, at the same time,

Treatment of wounds is a foundation of medicine and has a long history. According to Papyrus, 5000 years ago, it was reported that animals used oil, honey, and cotton for wound healing. Throughout history, many changes and developments have been made in the treatment of wounds.

Since the publication of a study in 1962 by a zoologist Winter (Winter), which found that keeping wounds moist is more beneficial in healing than drying wounds and causing scabs, the usefulness of wet wounds Has been consistently proven and emphasized. Wet dressing methods in a wet environment to prevent body fluids from being dehydrated or dried from the wound have now been found to facilitate wound healing.

The ideal dressing must have a wet environment between the wound and the dressing, adequate absorbency and moisture permeability, prevent dryness of the wound surface, and avoid burning of the surrounding normal skin. In addition, it has functionalities such as exchange of gas and prevention of intrusion of bacteria from the outside, and it should stick to the wound surface during exchange and not damage new tissue. In addition, it can be an ideal dressing material if it is easy to observe the wound healing condition, is irritating, easy to use and economical. Research efforts to develop dressings that satisfy all of these ideal conditions are still underway.

The following are the types of dressings that are currently in use. A foam dressing material using polyurethane, a foam dressing material using natural polymers such as chitosan, a hydrogel, a hydrocolloid, a film made of natural and synthetic polymers, a fibrous nonwoven fabric made of natural and synthetic polymers, or a dressing material in the form of woven fabric, etc. But there are still big and small problems. Among various wound dressings, foam dressing materials are most widely used, and the biggest problem for this product is as follows.

First, in the case of a polyurethane foam dressing material, it can be classified into a foam dressing material composed solely of the foam itself, a viscous dressing material having a pressure-sensitive adhesive layer formed on the wound surface contact layer, and a viscous dressing material having an adhesive film. Here, the foam dressing material composed of only the foam itself has excellent absorption ability and absorption speed of the initial exudate and is widely used among them.

However, in the case of initial wounds in which excessive exudates are generated, there is no serious problem. However, in the middle and late period when exudates are reduced and wounds become dry, a part of the foam forming the foam dressing material sticks to the wound, And sometimes a part of the newly formed new tissue attaches to the foam dressing material and comes off.

In recent years, a dressing material has been developed and used in which acrylic or silicone-based pressure-sensitive adhesive is formed on the wound surface contact layer of the foam to improve the above problems. This is because acrylic or silicon based adhesive is formed on the wound surface contact layer to have a certain thickness, so that it can be advantageously used for light scratches and the like. In this connection, in the prior art, Korean Patent No. 10-1073048 discloses a pressure-sensitive adhesive compounded with a silicone adhesive, an acrylic adhesive, a reaction inhibitor, etc., added to a wound surface contact layer of a foam dressing to a thickness of 20 to 95 탆 To improve the convenience of the product.

However, since the prior art as described above requires the formation of an adhesive layer on the entire wound surface contact layer, a large amount of exudates such as an image and a pressure ulcer may be generated, and may be suitable for a surgical wound where a small amount of exudates are generated. There is a limit to the use of wounds in which high exudates are generated.

In addition, if the pressure-sensitive adhesive is applied directly to the foam dressing having a porous structure, there is a high possibility of blocking the pores capable of absorbing the exudates, and the pressure-sensitive adhesive or the like penetrates into the pores, And there was also a problem of an increase in manufacturing cost.

On the other hand, in the case of a dressing made only of the foam itself, a physically perforated film is applied to the wound surface contact layer of the foam dressing material in order to prevent the foams from being pulled out of the wound surface or the newly- And products made by laminating them together are also introduced.

However, this is a problem in that the cost of manufacturing is increased because it is not a technique of combining the film with the foam dressing at the same time in the manufacturing process.

Korean Patent No. 10-1073048 (Announcement of Oct. 12, 2011) 'Polyurethane foam dressing material having excellent adhesiveness and method for manufacturing the same'

DISCLOSURE Technical Problem The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a wound dressing dressing material which can effectively prevent damage to wounds by forming a plurality of through- The present invention is also directed to a dressing material in which a pressure-sensitive adhesive film is laminated and a method of manufacturing the same, characterized in that it is possible to rapidly achieve a curing speed and further to prevent secondary damage .

In order to achieve the above object, the present invention provides the following solutions.

First, the dressing material according to the present invention comprises: an absorber for absorbing exudates; A protective film laminated on an upper surface of the shock absorber; And a plurality of through holes vertically formed on the bottom surface of the shock absorber, wherein the shock absorber comprises a foamed resin liquid on the upper surface of the pressure-sensitive adhesive film in a state where the release paper is attached to the bottom surface of the pressure- And is formed by applying the composition to a predetermined thickness and foaming it.

Here, the adhesive film may be formed of a film having a plurality of through holes vertically formed on an area corresponding to the bottom surface of the absorber, or may further include an adhesive layer formed on the bottom surface.

Further, in the present invention,
Applying a foaming resin liquid to a top surface of a pressure-sensitive adhesive film having a plurality of through-holes vertically formed on a bottom surface thereof and having a releasing paper attached thereto and foaming the foaming resin liquid to form an absorber on the adhesive film;
And attaching a protective film to the upper surface of the absorber before the foamed absorber is completely cured and then drying to form a protective film layer on the absorber.

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INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a wound dressing dressing material in which a plurality of through-holes formed thereon are laminated together.

In the present invention, it is possible to provide a dressing material having various materials and shapes utilizing various materials and having an adhesive film laminated thereon.

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Particularly, the present invention improves the problems of the conventional products by a new and efficient process compared with the conventional ones, and at the same time, it is superior to the expensive dressing materials manufactured by the conventional methods in terms of physical properties, There is an advantage that a dressing material for epithelial dressing can be provided.

1 shows a basic constitution of a dressing material according to the present invention
2 is a view showing another configuration of a dressing material according to the present invention
Fig. 3 is a view showing another configuration of the dressing material according to the present invention
Fig. 4 is a bottom view of the dressing material according to Fig. 1
5 is a bottom view of the dressing material according to Figs. 2 and 3. Fig.

Hereinafter, the solution means of the present invention, in which the above-mentioned effects can be expected, will be described in more detail with reference to the accompanying drawings.

1 is a configuration diagram of a dressing material according to an embodiment of the present invention. And an adhesive film (60) laminated on the bottom surface of the absorbing material (10), wherein the adhesive film (60) comprises a plurality of A through hole p is vertically formed. The outer protective film 40 and the adhesive film 60 may further include a release paper 50 and a release paper 5 as the outermost layers.

The adhesive film 60 may further include an adhesive layer 30 formed to have an area corresponding to the bottom surface of the shock absorber 10 and formed by applying a pressure sensitive adhesive to a bottom surface of the adhesive film 60, And a plurality of through holes are vertically formed by punching with a perforator. A release paper 5 is attached to the outermost layer on its bottom surface.

The releasing paper 5 may be any releasing paper having releasing property depending on the type of the pressure-sensitive adhesive to be used.

A foamed resin liquid is applied and foamed on the upper surface of the adhesive film 60 in which a plurality of through holes p in which the release paper 5 is laminated is formed to form an absorbing material 10, The protective film 40 is laminated. As the foamed resin liquid, a polyurethane prepolymer terminated with an isocyanate group and a foamed composition are mixed at a constant ratio and stirred at a high speed.

At this time, it is preferable that the shock absorber 10 and the protective film 40 laminated on the upper surface thereof are attached to the adhesive film 60 through external pressing, more specifically, coated on the second release paper 50 The protective film 40 is adhered to the upper surface of the shock absorber 10 and is passed through a circular pressing roller while passing through a certain gap.

The absorbing material 10 formed of the foamed resin liquid has porosity and absorbency, so that it can absorb and store the exudates. The process of forming the shock absorber 10 with the foamed resin liquid and laminating the protective film 40 on the upper surface thereof will be described in more detail. First, when the foaming resin solution applied on the upper surface of the adhesive film 60 has elapsed for a few tens of seconds to several minutes, the foaming agent stops to be further foamed and the formed absorbent material 10 starts to harden. (Protective film 40 coated on the second release paper 50) on the upper surface of the protective film 40 and the second release paper 50 after the hardening is completed, A dressing dressing dressing with lined window dressings is obtained.

FIG. 2 is a perspective view of a dressing material according to another embodiment of the present invention. FIG. 2 is a perspective view of a dressing material according to an embodiment of the present invention. And a pressure-sensitive adhesive film (20) having a through-hole (p) formed vertically. In this embodiment, the adhesive film layer 60 shown in Fig. 1 is composed of only the film 20 without the adhesive layer. The outer protective film 40 and the adhesive film 60 may further include a release paper 50 and a release paper 5 as the outermost layers. At this time, the release paper 5 is preferably a release paper 5 made of a material that can bond the release paper 5 and the film 20 to each other depending on the type of the film to be used.

The dressing material according to FIG. 2 may be prepared by mixing a polyurethane prepolymer terminated with isocyanate and a foamed composition in a predetermined ratio to a perforated film 20 laminated on the release paper 5, The foamed resin liquid is stirred to form a uniform thickness on the upper surface of the perforated film layer 20 to form an absorbing material 10 and a protective film 40 is formed on the upper surface of the absorbing material 10, The lamination of the film 40 is the same as that described above with reference to Fig.

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FIG. 3 is a view showing still another structure of the dressing material according to the present invention. The dressing material 10 includes an absorbent material 10 absorbing exudates, a protective film 40 laminated on the upper surface of the absorbent material 10, And an adhesive film (60) having a plurality of through holes (p) formed vertically,
The adhesive film 60 is formed in an area corresponding to the bottom surface of the absorber 10 and includes an adhesive layer 30 formed by applying an adhesive to a predetermined thickness on the upper surface of the adhesive film 60. The adhesive film 60 is punched And a plurality of through holes are vertically formed. A release paper 5 is attached to the outermost layer on its bottom surface.

The dressing material according to FIG. 3 is also formed on the upper surface of the perforated adhesion layer 30 formed on the upper surface of the perforated film 20, as in FIGS. 1 and 2, with an isocyanate-terminated A foamed resin liquid which is stirred at a high speed by mixing a polyurethane prepolymer and a foamed composition at a constant ratio is applied to the upper surface of the perforated adhesion layer 30 formed on the upper surface of the film 20 to form an absorber 10, The protective film 40 is formed on the top surface of the shock absorber 10, and the process of forming the protective film is the same as in FIGS. 1 and 2. FIG.

Although the absorbent material 10 used in Figs. 1, 2 and 3 is described as being formed of a foamed resin liquid, the absorbent material 10 is formed of a woven fabric or a nonwoven fabric absorbent material formed of natural and synthetic fibers It is also possible to form the absorbent material 10 in the form of a woven fabric or a nonwoven fabric formed of natural and synthetic fibers so that the exudates are absorbed into the perforated pores of the absorbent material 10, It is possible to prevent the secondary damage (the foam constituting the dressing material sticking to the wound, the new tissue sticking to the dressing material and falling off).

FIG. 4 is a bottom view of the dressing material of FIG. 1, FIG. 5 is a bottom view of the dressing material of FIGS. 2 and 3, and the bottom of the dressing material is in direct contact with the wound surface.

In the present invention, the film 20 is made of a polymer material, and most preferably, a film such as a polyurethane, a polyethylene, a polypropylene, a polyvinyl chloride, a polyethylene terephthalate, or a synthetic fiber can be used have.

As the pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer 30, materials such as acrylic, silicone, hot-melt, hydrocolloid, and hydrogel are used. Preferably, the pressure sensitive adhesive is formed of an acrylic or silicone polymer and formed in any one of hydrocolloid and hydrogel.

In addition, the absorbent material 10 may be made of an absorbent material formed of any one of foam, hydrocolloid, and hydrogel. Preferably, a polyurethane foam may be used as the absorber. Alternatively, the absorbent material 10 may be formed of absorbent fibers formed of natural or synthetic polymers, or may be formed in the form of a cloth containing fibers. For example, a nonwoven fabric blended with viscose rayon and polyester fibers may be used as the absorber.

Hereinafter, the elements constituting the present invention will be described in more detail.

≪ Synthesis of isocyanate-terminated polyurethane prepolymer >

A specific synthesis method was carried out by the method disclosed in Korean Patent No. 10-0985969 of the present applicant, and the synthesis was carried out at the blending ratio shown in Table 1 below.

<Preparation of foam composition>

The specific mixing method was carried out by the method disclosed in Korean Patent No. 10-0985969 of the present applicant, and the composition was prepared in the ratio shown in Table 2 below.

&Lt; Synthesis of Waterproofing Waterproof Polyurethane and Production of Film >

The moisture permeable polyurethane resin was synthesized and the film was produced by the method disclosed in Korean Patent No. 10-0985969 of the present applicant, and the thickness of the moisture permeable, waterproof polyurethane film produced was 20 탆.

&Lt; Preparation and perforation of adhesive film &

In the present invention, a polyurethane material was used, and the film (20) was produced by the method disclosed in Korean Patent No. 10-0985969 of the present applicant.

The thickness of the produced film 20 was 20 μm, and the film 20 was coated on the entire surface of the film 20 using a silicone adhesive. Finally, the adhesive layer 30 was formed to have a thickness of 80 μm. Thereafter, the perforations were perforated by the method disclosed in the Korean Patent Application No. 10-2013-0156187 of the present applicant to finally produce the adhesive film 60 having the through holes p formed therein.

&Lt; Production and Perforation of Film &

In the present invention, the film (20) is made of a polyurethane material, and the synthesis and the production of the film are carried out by the method disclosed in Korean Patent No. 10-0985969 of the present applicant. The thickness of the prepared film layer 20 was 20 탆. After that, the perforations were perforated by the method disclosed in the Korean Patent Application No. 10-2013-0156187 of the present applicant to finally form a film 20 ).

&Lt; Dressing remanufacturing example 1 >

(1) 50 parts by weight of the foamed resin liquid prepared above, that is, the isocyanate terminated polyurethane prepolymer, and 50 parts by weight of the foamed composition were stirred on the upper surface of the perforated adhesive film 60 for 10 seconds at 3000 RPM, A second release paper 50 having a protective film 40 coated thereon is passed through a circular roller on the upper surface of the absorbent material 10 by applying a liquid on the perforated adhesive film 60 to a predetermined thickness, .

(2) After the above step (1), the absorber 10 formed of the foamed resin liquid is cured after about 5 minutes, and then the second release paper 50 coated with the protective film 40 is removed Followed by drying and aging in an oven at 40 DEG C for 5 minutes to finally prepare the composition as shown in Fig. The physical properties of the dressing material thus prepared were measured by the methods described below, and the measured experimental results are shown in Table 3 below.

① Absorption (%)

The dressing material was taken 3 cm × 3 cm and allowed to stand at room temperature for 24 hours. The initial weight (A) was measured and stored for 24 hours in distilled water at 37 ° C., Respectively. And finally calculated using the following equation.

Absorption (%) = (BA) / A x 100

② Absorption rate of absorption layer

About 0.5 cc of distillation is dropped using a pipette about 2 cm away from the specimen, and the time until the distilled water is completely absorbed by the surface of the dressing material is measured. A total of 20 samples were measured and their mean values were shown.

③ Water vapor permeability

The temperature was measured in accordance with ASTM E 96-94 (Desiccant Method) using a thermo-hygrostat (SAMHEUNG INSTRUMENT, SH-CTH150), the temperature of the thermo-hygrostat was 37 ° C ± 2 and the relative humidity was 80% ± 5.

④ Measurement of wound healing effect

Experiments were carried out using 250-300 g body weight for 6-8 weeks of age. Leto was anesthetized with Lambutal. The intubation or oxygen supply was not performed separately, but the ventilation of the room air was made voluntarily. The side of the stomach was abraded and the hair was completely removed with an epilator. The surgical site was disinfected with povidone and alcohol, and aseptic surgery was performed as far as possible.

After that, the wound area was cleaned with 100πmm2, and then the wound area was washed with physiological saline, wiped with dry gauze, and the dressing material was attached about 1 cm wider than the wound area, and 2 pieces of gauze were covered thereon. To prevent this, the body was lightly fixed with a resilient bandage.

After the dressing, dressing was changed on 3, 6, 9, 12, and 15 days. The degree of epidermalization of the skin defect site over time, the desorption of neoplastic tissue upon dressing change, and tissue biopsy using an optical microscope were performed, The healing effect was measured.

&Lt; Dressing remanufacturing example 2 >

(1) 50 parts by weight of the above-prepared foamed resin solution, that is, a polyurethane prepolymer terminated with an isocyanate group, and 50 parts by weight of the foamed composition were coated on the upper surface of the perforated film 20 for 10 seconds at 3000 RPM The agitated foaming resin solution was applied on the perforated film 20 to a predetermined thickness and the protective film 40 was formed while passing the circular rollers together with the second release film 50 coated thereon.

(2) After the above step (1), the second release paper 50 having the protective film 40 coated thereon was cured after about 5 minutes, and then dried and aged in a 40 ° C oven for 5 minutes And finally, a structure as shown in Fig. 2 was produced. The physical properties of the dressing material thus prepared were measured by the method described in Production Example 1, and the measured results are shown in Table 3 below.

<Dressing remanufacturing example 3>

(1) In the perforated adhesive film 60, a nonwoven fabric (Namyang Yang nonwoven fabric, thickness: 2 mm) blended with viscose rayon and polyester was laminated on the adhesive layer 30 using a mesh roller.

(2) A protective film 40 coated on the second release film 50 on the opposite side where the adhesive film 60 is formed in order to form the protective film 40 on the upper layer of the product manufactured in (1) A 100 ° C heating roller was pressed against each other at a pressure of 2 kg / cm 2 at a speed of 1 m / min, followed by lapping to finally produce a product as shown in FIG. The physical properties of the dressing material thus prepared were measured by the method described in Production Example 1, and the measured results are shown in Table 3 below.

&Lt; Comparative Example 1 &

(1) 50 parts by weight of a polyurethane prepolymer terminated with isocyanate groups prepared above and 50 parts by weight of a foamed composition were stirred at 3000 RPM for 10 seconds to form a foamed resin liquid, To form an absorber 10, and then the protective film 40 is formed on the top surface of the absorber 10 while passing through a circular roller together with a second release paper 50 coated thereon.

(2) After the above step (1), the second release paper 50 having the protective film 40 coated thereon was cured after about 5 minutes, and then dried and aged in a 40 ° C oven for 5 minutes To produce a product in which the perforated film 20 and the perforated adhesive film 60 were not laminated. The physical properties of the dressing material thus prepared were measured by the method described in Production Example 1, and the measured results are shown in Table 3 below.

&Lt; Comparative Example 2 &

(1) 50 parts by weight of the isocyanate-terminated polyurethane prepolymer prepared above and 50 parts by weight of the foam composition prepared above were stirred at 3000 RPM for 10 seconds to form a foamed resin liquid having a predetermined thickness. 40 were passed through a circular roller with a second release paper 50 coated thereon.

(2) After the above-mentioned step (1), the second release paper 50 with the protective film 40 coated thereon was cured after about 5 minutes, and then dried in an oven at 40 ° C for 5 minutes, And aged to prepare a product in which the perforated film 20 and the perforated adhesive film 60 were not laminated.

(3) A silicone adhesive was coated on the wound surface contact layer of the product prepared in (2) above to a thickness of 80 탆, followed by curing in a hot air dryer at 110 캜 for 10 minutes.

The physical properties of the dressing material thus prepared were measured by the method described in Production Example 1, and the measured results are shown in Table 3 below.

&Lt; Comparative Example 3 &

The protective film 40 coated on the second release paper 50 was placed against each other to form a protective film layer 40 on the upper side of the nonwoven fabric, The roller was passed through at a pressure of 2 kg / cm 2 and a speed of 1 m / min, followed by lapping.

After such luting, the second release paper 50 was removed and a perforated film 20 or perforated adhesive film layer 60 was not laminated. The physical properties of the dressing material thus prepared were measured by the method described in Production Example 1, and the measured results are shown in Table 3 below.

     *: Condition = 37 DEG C, 80% RH

     **: Existing product

⊚: Excellent ◯: Good ◇: Normal ×: Poor

As shown in Table 3, in the case of Production Example 2 in which only Production Example 1 and Film 20 in which a perforated adhesive film 60 is laminated and Comparative Example 1 in which nothing is bonded, And absorption rate, and moisture permeability were not influenced by the morphology, and the measured values were constant.

Also in the case of Production Example 3 and Comparative Example 3, even if the type of the absorber 10 is changed, even if the perforated pressure-sensitive adhesive film 60 is laminated or not, the absorbency, absorption rate, And the measured values were constant.

However, as in the case of Comparative Example 2, in the case of the products made by the conventional techniques, it was found that the absorbency, the absorption rate, the moisture permeability, etc. were significantly lower than those of the products of the manufacturing examples which were relatively different.

This is because, as in the present invention, even if the adhesive films 60 and 20 in which a plurality of through holes p are perforated are laminated, important functions to be possessed by the wound dressing are not lost or weakened, And it is possible to improve the conventional problems mentioned in the present specification.

Particularly, as a result of animal clinical studies, in Examples 1 and 2, a large amount of exudate was absorbed at the early stage of wounding, and at the time when the exudates were dry, the foam sticks to the wound surface, There was no case of causing damage to the adherent or newly-emerging tissue.

In contrast, in the case of Comparative Example 2, in the early stage when the exudates were generated in a large amount, the exudate was absorbed slowly due to a slow rate of absorbing the exudates. Particularly, some phenomenon occurred due to low moisture permeability.

In the case of Comparative Example 1, the function of absorbing and managing the exudates was superior to that of Comparative Example 2, but the foam sticks to the wound surface in the middle and late stages when the exudates disappear and the debris of the foam sticks to the wound surface, At the time of exchange, a number of cases were observed in which the new tissue adhered to the foam causing secondary damage.

In the case of Comparative Example 3, the dressing material of the original nonwoven fabric sticks to the wound surface and causes secondary damage. However, when the perforated adhesive film 60 is laminated as in the case of Production Example 3 It was found that the result of Comparative Example 3 was less than that of Comparative Example 3, which is not so, and thus, Production Example 3 is superior to Comparative Example 3 in terms of wound healing effect.

Although the present invention has been fully described by way of example with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of numerous modifications and variations, Of course.

The wound dressing according to the present invention can be manufactured into various forms of wound dressing using absorbent materials including foam, hydrocolloid, hydrogel, nonwoven fabric made of synthetic fibers, woven fabric or paper, It can be widely used for non-medical use.

5: release paper 10: absorber
20: film 30: adhesive layer
40: protective film 50: second release film
60: Adhesive film P: Through hole

Claims (13)

An absorber for absorbing the exudate; A protective film laminated on an upper surface of the shock absorber; And a plurality of through holes vertically formed on the bottom of the absorbing member, the adhesive film comprising:
Wherein the absorbent material is formed by applying a foaming resin liquid to a top surface of the adhesive film in a state in which releasing paper is adhered to the bottom surface of the adhesive film and foaming the foaming resin liquid to a predetermined thickness.
The method according to claim 1,
Wherein the adhesive film further comprises a pressure-sensitive adhesive layer formed on a bottom surface thereof, and a plurality of through-holes are vertically formed by punching the pressure-sensitive adhesive layer with a perforator together with the pressure-sensitive adhesive layer.
delete The method according to claim 1,
Wherein the pressure-sensitive adhesive film is formed of any one of polyurethane, polyethylene, polypropylene, polyvinyl chloride, and polyethylene terephthalate.
The method according to claim 1,
Wherein the protective film is formed of any one of polyurethane, polyethylene, polypropylene, polyvinyl chloride, and polyethylene terephthalate.
3. The method of claim 2,
Wherein the pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer is formed of an acrylic or silicone polymer, and is formed in any one of a hydrocolloid and a hydrogel.
3. The method according to claim 1 or 2,
Further comprising a releasing paper adhered as an outermost layer on a bottom surface of the adhesive film.
The method according to claim 1,
Wherein the absorbent material is made of a polyurethane foam.
delete 3. The method according to claim 1 or 2,
Wherein the cross-sectional shape of the through-hole is any one of a circular shape and a polygonal shape.
Applying a foaming resin liquid to a top surface of a pressure-sensitive adhesive film having a plurality of through-holes vertically formed on a bottom surface thereof and a releasing paper attached thereto, and foaming the foaming resin liquid to form an absorber on the adhesive film;
And attaching a protective film to the upper surface of the absorber before the foamed absorber is completely cured, followed by drying to form a protective film layer on the absorber.
12. The method of claim 11,
Wherein the foaming resin solution is a mixture of a polyurethane prepolymer terminated at an end with an isocyanate group and a foaming composition at high speed.
12. The method of claim 11,
Wherein the adhesive film further comprises a pressure-sensitive adhesive layer formed on a bottom surface thereof, wherein a plurality of through-holes are vertically formed with the pressure-sensitive adhesive layer being included, and the release paper is attached to the outermost layer on the bottom surface of the pressure- A method for manufacturing a dressing material in which an adhesive film is laminated.

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