JP2001213766A - Poulticle with slit, and its preparation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a poultice with a self-adhesive sheet which is low strutted feeling and hardly being peeled off even if it is adheded to the joint part such as elbows and knees or the like. SOLUTION: This poultice with a self-adhesive sheet is equipped with a poultice part where a plaster layer formed on a support, and the self-adhesive sheet having the extension property in which the peripheral edge of the self-adhesive sheet is installed so as to protrude at opposed portions in the periphery of the poultice part. In the poultice, at least one or more of slits which subdivide the above supporting body and the plaster layer, are installed in the poultice part composing of the supporting body and the plaster layer above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a poultice, and more particularly to an improvement in a poultice with an adhesive sheet having a pap portion holding a drug or the like inside the periphery of the adhesive sheet on the adhesive surface side. It is.

[0002]

2. Description of the Related Art There are various commercially available cataplasms with a pressure-sensitive adhesive sheet in which a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer on the entire surface of the pressure-sensitive adhesive sheet and a pulp piece holding a drug or the like inside the peripheral edge of the pressure-sensitive adhesive surface are integrated. Have been. In the cataplasm, the adhesive sheet and the support of the cataplasm are well integrated by the adhesive layer of the adhesive sheet, and the adhesive layer of the adhesive sheet on the periphery of the support that supports the plaster layer is applied to the patient. It can be stuck to the sticking section.

[0003]

However, since such a cataplasm with an adhesive sheet has an adhesive surface around the plaster layer, it is difficult to adhere to a joint such as an elbow or a knee. In addition, there is a problem that there is a sense of tension according to the movement of the joint, and the adhesive surface easily peels off due to the movement of the joint. Even if a highly extensible material is used for the support for supporting the adhesive sheet and the plaster layer, the joint must extend the adhesive sheet and the support at the same time. The movement was overwhelming.

An object of the present invention is to provide a cataplasm having a pressure-sensitive adhesive sheet which has a small feeling of tension even when stuck to joints such as elbows and knees and is difficult to peel off.

[0005]

A cataplasm with a slit according to the first aspect of the present invention has a cataplasm having a plaster layer formed on a support and an adhesive at a position facing the outer periphery of the cataplasm. In a cataplasm provided with a pressure-sensitive adhesive sheet provided with a pressure-sensitive adhesive sheet provided with an extensible peripheral edge, the support and the paste layer are subdivided into a pulp portion composed of the support and the paste layer. At least one or more slits are provided.

According to a second aspect of the present invention, there is provided a pressure-sensitive adhesive sheet according to the first aspect,
It has extensibility in a direction orthogonal to the slit.

According to a third aspect of the present invention, there is provided a method for producing a cataplasm having a slit, comprising: a laminating step of laminating a support on a release liner via a paste layer; A punching step of punching the laminate of the body and the plaster into a shape in which a plurality of rows are formed; a removing step of removing extra support and plaster other than the punched shape from the release liner; and A pressure-sensitive adhesive sheet forming step of bonding a pressure-sensitive adhesive sheet to the exposed surface of the release liner from which the body and the plaster have been removed, and a subdivision of cutting into a plurality of rows formed in the stamping step and cutting to a predetermined width. In the method for producing a cataplasm with a pressure-sensitive adhesive sheet provided with a cutting step, a slit forming step of cutting a laminate of the support and the plaster layer is provided before the pressure-sensitive adhesive sheet forming step.

According to a fourth aspect of the present invention, there is provided a method for producing a cataplasm with a slit according to the third aspect of the present invention. A slit forming step of cutting the laminate of the support and the plaster layer at the same time as punching out the laminate with the body layer.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a pulp portion having a plaster layer formed on a support and an extensibility provided such that an adhesive rim protrudes at a position facing the outer periphery of the pulp portion. In a cataplasm with a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive sheet, at least one slit for subdividing the support and the plaster layer is provided in the pulp portion comprising the support and the plaster layer. Therefore, even when the adhesive is applied to a joint such as an elbow or a knee, a cataplasm with an adhesive sheet having a small feeling of tension and being difficult to peel off can be obtained.

[0010] That is, since the slit is formed in the pup portion provided on the adhesive surface side of the adhesive sheet, the adhesive sheet expands in accordance with the movement of the joint even when attached to the joint. In accordance with the extension of the pulp, the pup part is divided by the slit, the feeling of tension is small, and it is difficult to peel.

In a preferred embodiment, the pressure-sensitive adhesive sheet has high extensibility in a direction perpendicular to the slit. That is, as the pressure-sensitive adhesive sheet of the present invention, a sheet having high extensibility according to the movement of the joint is selected. For example, in addition to using a material having high elasticity in the longitudinal direction, a material having high elasticity in all directions may be used in order to further reduce the sense of tension.

The pressure-sensitive adhesive sheet of the present invention only needs to be provided so that the pressure-sensitive adhesive rim protrudes at least at a position facing the outer periphery of the pulp portion. For example, when the support is rectangular, the pressure-sensitive adhesive surface of the pressure-sensitive adhesive sheet is provided so as to protrude at least on opposing sides of the support, and more preferably, protrudes over the entire circumference.

Further, the slit of the pulp portion may be formed in a direction perpendicular to the direction of extension in accordance with the extensibility of the pressure-sensitive adhesive sheet. For example, if the material has high elasticity in all directions. , May be arranged on concentric circles.

Further, the slit of the pulp part may be divided at least in accordance with the extension of the sticking part, and may be formed so as to divide the support and the plaster layer of the pulp part. It may be formed so as to be divided,
It may be formed so that a very small part of the adjacent supports separated by the slits is connected.

The cataplasm having a slit of the present invention is preferably prepared by adhering a release liner to the entire surface of the pressure-sensitive adhesive sheet on the pressure-sensitive adhesive side, and covering the surface of the plaster layer of the cataplasm and the pressure-sensitive adhesive surface of the pressure-sensitive adhesive sheet. Will be retained.

This preferred cataplasm having a slit is composed of a laminating step of laminating a support on a release liner via a plaster layer, and a laminate of the support and the plaster in a plurality of rows while leaving the release liner. A punching step of punching into a formed shape, and a removing step of removing excess support and plaster other than the punched shape from the release liner,
A pressure-sensitive adhesive sheet forming step of bonding a pressure-sensitive adhesive sheet to the exposed surface of the release liner from which the excess support and paste have been removed, and a predetermined width cut and cut into a plurality of rows formed in the stamping step And a slit forming step of cutting a laminate of the support and the paste layer before the pressure-sensitive adhesive sheet forming step.

The slit forming step may be performed before the pressure-sensitive adhesive sheet forming step, and in particular, in the punching step, the laminate of the support and the paste layer is simultaneously punched out. By cutting the laminate with the above, the number of steps can be reduced.

The support for supporting the plaster layer of the present invention may be a single or composite material such as a nonwoven fabric, a woven fabric, an aluminum film, or a plastic film.

Further, in addition to the medicinal component, a water-absorbing resin, a shape-retaining agent, a pressure-sensitive adhesive, etc. are added to the plaster layer, if necessary.
Examples of the water-absorbing resin include starch acrylate, acrylic acid polymer partial sodium salt crosslinked product, and the like. Examples of shape-retaining agents / adhesives include sodium carboxymethylcellulose, sodium methylcellulose, polyvinyl alcohol, sodium alginate, modified polyalkylene oxide, polyacrylic acid, sodium polyacrylate, acrylic ester resin, polyvinylpyrrolidone, gelatin, carboxymethyl There are thickeners such as vinyl polymers, natural rubber-based, synthetic rubber-based, styrene-isoprene-styrene block copolymer-based, silicone resin-based, and polyvinyl ether-based adhesives. Examples of the humectant include glycerin, propylene glycol, sorbitol, 1,3-butylene glycol, and the like.

In the pressure-sensitive adhesive sheet used in the present invention, the support may be a single or composite material of non-woven fabric, woven fabric, aluminum film and plastic film, and the pressure-sensitive adhesive may be raw rubber, synthetic polymer, resin or the like. Can be used. Specific examples of the pressure-sensitive adhesive include polyacrylate, natural / synthetic rubber, styrene-isoprene-styrene block polymer-based, and silicone resin-based adhesives, and those having few side effects such as rash on the skin. To be elected.

As the release liner, it is natural that the plaster layer is well protected and the self-property property is not changed by the plaster layer. Is done. For example, glassine paper, PET, P
P, PE, an aluminum film or the like, or a laminate of those selected from them, and a silicon-processed one thereof are used.

[0022]

FIG. 1 is an explanatory view showing the structure of an embodiment of a cataplasm with a pressure-sensitive adhesive sheet according to the present invention. Fig. a is a perspective view, Fig. b is a cross-sectional view shown by a broken line in Fig. a, Fig. c is a plan view, and Fig. d is an explanatory view showing a state where a release liner is peeled off.

As shown in the figure, the cataplasm with adhesive sheet (1
(0) is the adhesive layer (13) on the adhesive side of the adhesive sheet (11) and the support
A pup portion (14) in which the wrap portion (12) is laminated is disposed, and the lip portion (14) is integrated so that the adhesive periphery of the adhesive sheet (11) projects along the outer periphery of the pup portion (14). Plaster layer (1)
3), the adhesive periphery of the adhesive sheet (11), release liner (15)
Covered with.

In the pulp portion (14) in which the plaster layer (13) and the support (12) are laminated, nine slits (16) are formed in parallel in a direction perpendicular to the longitudinal direction of the cataplasm (10). The pup portion (14) is subdivided into strips.

FIG. 2 is an explanatory view showing the structure of another embodiment of the cataplasm with the adhesive sheet of the present invention. Figure a is a perspective view,
Fig. b is a cross-sectional view shown by a broken line in Fig. a, Fig. c is a plan view, and Fig. d is an explanatory view showing a state where the release liner is peeled off.

As shown in the figure, the cataplasm with adhesive sheet (2
(0) is the adhesive layer (23) and the support on the adhesive side of the adhesive sheet (21).
A rectangular pup part (24) in which the ply part (22) is laminated is arranged, and the outside of the short side of the pup part (24) is integrated so that the adhesive periphery of the adhesive sheet (21) projects. . The adhesive layer (23) of the pulp portion (24) and the adhesive periphery of the adhesive sheet (21) are covered with a release liner (25).

In the pulp portion (24) in which the plaster layer (23) and the support (22) are laminated, nine slits (26) are formed in parallel in a direction perpendicular to the longitudinal direction of the cataplasm (20). The pup part (24) is subdivided into strips.

FIG. 3 is an explanatory view showing one embodiment of the production process of the cataplasm with the adhesive sheet of the present invention. As shown in the figure, the belt-shaped release liner (35) made of polypropylene conveyed from the release liner roll (35a) is a paste that forms a paste layer on the release liner (35) surface by screen printing means (33a). (33) is spread and applied to an appropriate thickness.

The paste (3) of the strip-shaped release liner (35) to be conveyed
3) A strip-shaped support (32) is laminated on the support roll (32a). And, this laminated body, the press roll (R1)
, And the plaster (33) is brought into a more stable state of close contact with the support (32), and is sent to the punching and cutting step.

The punching and cutting here uses a roll-type punching machine (R2). The roll-type punching machine (R2) has a plurality of cutting blades of the same shape corresponding to the punching shape provided on the peripheral surface thereof in a row in the rotation direction, and presses the strip-shaped laminate conveyed while rotating it. . At this time, in addition to the outer shape of the pup portion, which is a laminate of the support and the plaster, the cutting blade is also formed with a blade having a slit as shown in FIG. For this reason, they are sequentially punched and cut into a predetermined shape, and at the same time, a slit is formed.

Next, the laminated body of the support and the plaster body around the outer shape of the pulp portion is punched and cut to form a winding roll.
(R3), further conveyed, and a pressure-sensitive adhesive sheet roll (3
From 1a), the strip-shaped pressure-sensitive adhesive sheet (31) is strip-shaped release liner (3
5) Cover the laminate of the plaster (33) and the support (32). These laminates are cut by a cut roll (R4) so that a pup portion (34) composed of a plaster body (33) and a support (32) is located at a central position, and a die roll (R5) following the cut portion.
Be separated.

FIG. 4 is an explanatory view showing another embodiment of the production process of the cataplasm with the adhesive sheet of the present invention. As shown in the figure, the belt-shaped release liner (45) made of polypropylene conveyed from the release liner roll (45a) is a paste that forms a paste layer on the release liner (45) surface by screen printing means (43a). (43) is spread and applied to an appropriate thickness.

The paste (4) of the belt-shaped release liner (45) to be conveyed
3) A strip-shaped support (42) is laminated on the support roll (42a). And, this laminated body is pressed roll (r1)
And the plaster (43) is brought into a more stable and close contact state with the support (42), and is sent to the punching and cutting step.

The punching and cutting here uses a roll type punching machine (r2). The roll-type punching machine (r2) has a plurality of cutting blades of the same type corresponding to the punching shape provided on the peripheral surface thereof in a row in the rotation direction, and presses the strip-shaped laminate conveyed while rotating. .

Next, the laminated body of the support and the plaster body around the outer shape of the pup portion is cut out by punching and cutting.
(r3). The laminate having the unnecessary portion wound thereon is transported to the slit roll (r6). The cutting blade of the slit roll is provided with a blade in which a slit as shown in FIG. 1 is formed, and is sequentially punched and cut to form a slit in a pap portion, which is a laminate of a support and a plaster. .

The laminate having the slit formed thereon is further conveyed, and is fed from a pressure-sensitive adhesive sheet roll (41a) to a band-shaped pressure-sensitive adhesive sheet (4).
1) is a strip-shaped release liner (45), a plaster (43), and a support (4
Cover the laminate of 2). These laminates are cut roll (r4)
The pup part (4) composed of the plaster (43) and the support (42)
4) is cut so as to be in the center position, and is cut off by the subsequent die roll (r5).

[0037]

As described above, the present invention has an effect that a patch with a pressure-sensitive adhesive sheet, which is hardly peeled off and has a small feeling of sticking even when attached to joints such as elbows and knees, can be obtained. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing the configuration of one embodiment of a cataplasm with a pressure-sensitive adhesive sheet of the present invention. Fig. a is a perspective view, Fig. b is a cross-sectional view shown by a broken line in Fig. a, Fig. c is a plan view, and Fig. d is an explanatory view showing a state where a release liner is peeled off.

FIG. 2 is an explanatory view showing the configuration of another embodiment of the cataplasm with a PSA sheet of the present invention. Fig. a is a perspective view, Fig. b is a cross-sectional view shown by a broken line in Fig. a, Fig. c is a plan view, and Fig. d is an explanatory view showing a state where a release liner is peeled off.

FIG. 3 is an explanatory view showing one embodiment of a process for producing a cataplasm with a pressure-sensitive adhesive sheet according to the present invention.

FIG. 4 is an explanatory view showing another example of the production process of the cataplasm with the adhesive sheet of the present invention.

[Explanation of symbols]

 (10) (20) ... Patch with adhesive sheet, (11) (21) ... Adhesive sheet, (12) (22) ... Support, (13) (23) ... Plastic layer, (14) (24) ... Pup part, (15) (25) ... Release liner, (16) (26) ... Slit, (R1) (r1) ... Pressing roll, (R2) (r2) ... Roll type punching machine, (R3) (r3 ) ... Rewind roll, (R4) (r4) ... Cut roll, (R5) (r5) ... Die roll, (r6) ... Slit roll, (31) (41) ... Adhesive sheet, (32) (42) ... Support Body, (33) (43) ... Plaster, (35) (45) ... Release liner, (31a) (41a) ... Adhesive sheet roll, (32a) (42a) ... Support roll, (33a) (43a) ... screen printing means, (35a) (45a) ... release liner roll,

Continuation of the front page (72) Inventor Junichi Ishiguro 173-3 Mizuhashi Hatake, Toyama City, Toyama Prefecture Daiko Pharmaceutical Industry Co., Ltd. F term (reference) 4C076 AA73 BB31 CC37 FF70 GG50

Claims (4)

[Claims] 1. A pressure-sensitive adhesive comprising: a pulp portion having a plaster layer formed on a support; and an extensible pressure-sensitive adhesive sheet provided with an adhesive rim protruding at a position facing the outer periphery of the pulp portion. In a cataplasm with a sheet, at least one slit for subdividing the support and the plaster layer into strips is provided in the pulp portion composed of the support and the plaster layer. A poultice containing. 2. The poultice with a slit according to claim 1, wherein the pressure-sensitive adhesive sheet has extensibility in a direction orthogonal to the slit. 3. A laminating step of laminating a support on a release liner with a paste layer interposed therebetween, and punching into a shape in which a laminate of the support and the plaster is formed in a plurality of rows while leaving the release liner. Punching step, a removing step of removing excess support and plaster body other than the punched shape from the release liner, and applying an adhesive sheet to the exposed surface of the release liner from which the excess support and plaster have been removed. A method for producing a cataplasm with a pressure-sensitive adhesive sheet, comprising: a pressure-sensitive adhesive sheet forming step of laminating, and a subdivision cutting step of cutting a plurality of rows formed in the stamping step and cutting into a predetermined width. A method for producing a poultice with a slit, comprising a slit forming step of cutting a laminate of the support and the plaster layer into a strip shape before the adhesive sheet forming step. 4. The method for producing a cataplasm having a slit according to claim 3, wherein in the punching step, a laminate of the support and the paste layer is punched out at the same time as the support and the paste layer. Characterized by performing a slit forming step of cutting the laminate into strips.