JP6317716B2 - Adhesive plaster and method for producing the same - Google Patents

Description

  The present invention relates to a bandage having a hemostatic pad and a method for producing the same.

  Patent Document 1 describes a hemostatic material having a three-layer structure in which a soluble hemostatic material layer, an adhesive layer, and a fixing sheet are laminated. The adhesive layer adheres to the soluble hemostatic material layer and the fixing sheet. When a soluble hemostatic material layer is applied to a wound site, it dissolves while swelling by absorbing blood. This dissolved hemostatic material promotes the activation of blood coagulation factors and the generation of a blood coagulation catalyst. As a result, the wound surface is hemostatic.

Japanese Patent Laid-Open No. 9-294765

  The soluble hemostatic material layer of the hemostatic material described in Patent Document 1 is composed of a nonwoven fabric containing hemostatic components such as oxycellulose, oxidized collagen, sodium cellulose, calcium alginate and the like, and has an excellent hemostatic effect. Then, when this inventor examined the adhesive bandage using the nonwoven fabric containing a hemostatic component, he discovered the following subjects.

  The adhesive bandage is, for example, a non-woven fabric elongated from a raw roll or a non-woven fabric formed in a predetermined shape by cutting the non-woven fabric long body, and adhesive of a base material long sheet coated with an adhesive. After sticking on the surface, the adhesive sheet plaster precursor is formed by attaching the release sheet elongated body to the base sheet elongated body, and then the adhesive bandage precursor is appropriately cut. In the process of transporting the nonwoven fabric long body until the nonwoven fabric long body or the nonwoven fabric is pasted to the adhesive surface of the base sheet long body, the nonwoven fabric long body is free from slack and wrinkles. It is conveyed in a state where a predetermined tension is applied. At this time, in order to improve the productivity of the adhesive bandage, the long nonwoven fabric is conveyed at a relatively high speed. However, in the conveyance process, if the resistance of the freely rotating guide roll is received, or if the rotational force from the drive roll is applied to increase the conveyance speed, tension is applied to the long nonwoven fabric. These tensions increase as the conveyance speed increases. On the other hand, since a nonwoven fabric long body containing a hemostatic component has a low tensile strength, if a tension exceeding a predetermined tension is applied in the manufacturing process, the nonwoven fabric long body is deformed and the thickness and width are reduced or uneven. There is a problem that the shape may be different, and in some cases, it may break.

  Moreover, when a nonwoven fabric long body expand | extends by excessive tension | tensile_strength, after affixing on a base material sheet long body, only a nonwoven fabric long body may shrink | contract and it may produce a wrinkle in a base material sheet. In addition, the long nonwoven fabric containing a hemostatic component has a low strength, and there is a problem that the surface is fuzzy or the fibers are easily scattered as fine dust due to contact with a conveying roller or the like.

  Accordingly, an object of the present invention is to provide a hemostatic pad maintained with a predetermined shape by improving the tensile strength of a hemostatic pad having a nonwoven fabric containing a hemostatic component, and a non-woven long body containing a bandage and a hemostatic component that improve productivity. It is providing the manufacturing method of the adhesive bandage which suppresses a deformation | transformation and a fracture | rupture of.

  The adhesive bandage of the present invention has a base sheet in which an adhesive layer is formed on one side, a non-woven fabric containing a hemostatic component, and a hemostasis pad adhered to the one side without protruding from the one side of the base sheet, A release sheet that covers the one surface so as to be peelable so as to sandwich the hemostatic pad between the base sheet and the base sheet. The adhesive layer is disposed on both sides of the hemostatic pad with respect to at least one direction of the in-plane direction of the single surface when viewed from a direction perpendicular to the single surface, and the hemostatic pad is the non-woven fabric. The reinforcing sheet is integrally laminated on at least one side.

  According to this, the hemostatic pad is configured by integrally laminating the nonwoven fabric and the reinforcing sheet. For this reason, the tensile strength of a hemostatic pad becomes larger than the hemostatic pad which has only a nonwoven fabric. By adopting such a structure that the tensile strength of the hemostatic pad is increased in this way, even if the nonwoven fabric is subjected to a tension that causes the nonwoven fabric to deform or break beyond its tolerance on the long hemostatic pad that will be the hemostatic pad in the manufacturing process. The hemostatic pad elongate body is not easily deformed or broken, and the occurrence of wrinkles on the base sheet is suppressed. For this reason, it becomes a bandage which is provided with the hemostatic pad maintained by the predetermined shape, and productivity improves.

  In the present invention, the hemostatic component is preferably at least one of alginate, oxycellulose, oxidized collagen, and sodium cellulose. As a result, the hemostasis pad can be gelled with blood or the like to maintain a wet state suitable for wound healing, and an excellent hemostasis effect can be obtained.

  Moreover, in this invention, when the said adhesive layer is seen from the direction perpendicular | vertical with respect to the said single side | surface, it is preferable to arrange | position so that the perimeter of the said hemostatic pad may be enclosed. Thereby, leakage of blood or the like from the adhesive bandage to the outside can be suppressed.

  Moreover, in this invention, it is preferable that the said reinforcement sheet has higher tensile strength than the said nonwoven fabric. Thereby, it becomes possible to maintain the shape of a nonwoven fabric effectively, and the shape of a nonwoven fabric becomes difficult to collapse. Moreover, since the nonwoven fabric which affixed the reinforcement sheet in a manufacturing process becomes difficult to deform | transform, it can suppress that a wrinkle arises in the base material sheet which affixed this nonwoven fabric.

  Moreover, in this invention, it is preferable that the thickness of the said reinforcement sheet is thinner than the said nonwoven fabric. This makes it possible to improve the tensile strength while reducing the thickness of the hemostatic pad.

In the present invention, the nonwoven fabric preferably has a bulk density of 4.0 × 10 ⁻² g / cm ³ or more. As a result, the liquid absorbability is improved, and blood coagulation is facilitated.

  Moreover, in this invention, it is preferable that the said reinforcement sheet | seat is laminated | stacked on the said base material sheet side of the said nonwoven fabric. Thereby, coagulation | solidification of the blood by the hemostatic component of a nonwoven fabric is accelerated | stimulated more than what laminated | stacked the reinforcement sheet on the peeling sheet side of a nonwoven fabric.

  Moreover, in this invention, it is preferable that the said base material sheet has a folding | returning part formed by folding up the one end part of the said one direction of the said base material sheet to the said single side | surface side. Thereby, a folding | returning part stops sticking to a peeling sheet. For this reason, it becomes possible to easily peel off the base sheet from the release sheet by grasping the folded portion.

  Moreover, the manufacturing method of the adhesive bandage of this invention is a pad which integrally laminates a reinforcing sheet long body on at least one surface of a nonwoven fabric long body containing a hemostatic component to form a long hemostatic pad long body in the conveying direction. Forming step, transporting step of transporting the hemostatic pad long body, the hemostatic pad long body transported in the transporting process, or the length of the hemostatic pad long body in the transporting direction is a predetermined dimension A pad pasting step of pasting the hemostatic pad formed by cutting so as to become a predetermined position on one side where the adhesive layer of the long base sheet sheet in the transport direction is formed, and after the pad pasting step , A precursor forming step of forming an adhesive plaster precursor by attaching a long release sheet elongated body in the transport direction to the adhesive layer of the base sheet elongated body, and cutting the adhesive plaster precursor Cutting process to form a bandage To have.

  According to this, the hemostatic pad elongate body by which the nonwoven fabric elongate body and the reinforcement sheet elongate body were integrally laminated | stacked by the pad formation process is formed. For this reason, the tensile strength of the hemostatic pad elongate body is greater than that of the non-woven fabric elongate body alone, and is greater than the tension per unit width at which the non-woven fabric elongate body alone deforms or breaks beyond tolerance. The long hemostatic pad can be transported while applying a predetermined tension to the long hemostatic pad, and the productivity of the adhesive bandage can be improved. In this transporting process, even if the tension that causes the nonwoven fabric to deform or break beyond tolerance is applied to the hemostatic pad long body, the tensile strength of the hemostatic pad long body is relatively large, so the nonwoven fabric may be deformed or broken. It becomes difficult to do. Thus, since the hemostatic pad is difficult to deform, it is possible to suppress wrinkles from forming on the base sheet to which the hemostatic pad is attached, and to stably produce a bandage with a hemostatic pad of a predetermined shape. . Further, since the long hemostatic pad has a long reinforcing sheet on at least one side, the surface of the long nonwoven fabric is supported by guiding the surface of the long reinforcing sheet with a conveying roller or the like. It is possible to suppress the fluffing and the scattering of fibers from the nonwoven fabric as dust and mixing into the bandage product. Thereby, the appearance quality of the adhesive bandage can be maintained.

  Further, in the present invention, in the pad forming step, the hemostatic pad long body is wound into a roll shape to produce a raw fabric roll, and in the transporting step, the hemostatic pad long length fed out from the raw fabric roll. It is preferable to transport the body. Thereby, in a conveyance process, the hemostatic pad elongate body is drawn out and conveyed from the original fabric roll formed by winding up in roll shape. For this reason, the conveyance speed of the nonwoven fabric long body in the pad forming step can be set to any conveyance speed different from the speed at which the hemostatic pad long body is subsequently conveyed, and the tension applied to the nonwoven fabric long body can be kept small. It becomes.

  Moreover, in this invention, it is preferable to provide further the folding | turning process which folds the one end part of the direction orthogonal to the said conveyance direction of the said base material sheet elongate to the said single side | side before the said front body formation process. Thereby, it becomes possible to form the folding | turning part which does not stick to a peeling sheet in the one end part of a base material sheet elongate body. For this reason, in the adhesive bandage, it is possible to easily peel off the base sheet from the release sheet by grasping the folded portion.

According to the adhesive bandage of the present invention, the hemostatic pad is configured by integrally laminating a nonwoven fabric and a reinforcing sheet. For this reason, the tensile strength of a hemostatic pad becomes larger than the hemostatic pad which has only a nonwoven fabric. By adopting such a structure that the tensile strength of the hemostatic pad is increased in this way, even if the nonwoven fabric is subjected to a tension that causes the nonwoven fabric to deform or break beyond its tolerance on the long hemostatic pad that will be the hemostatic pad in the manufacturing process. The said hemostatic pad elongate body becomes difficult to fracture | rupture. Furthermore, since a nonwoven fabric becomes difficult to deform | transform in a manufacture process, it can suppress that a wrinkle arises in the base material sheet which affixed the nonwoven fabric. For this reason, while having the nonwoven fabric containing a hemostatic component, it becomes a bandage which is provided with the hemostatic pad by which shape loss was suppressed and was maintained in the predetermined shape, and productivity improves.
According to the manufacturing method of the adhesive bandage of this invention, the hemostatic pad elongate body by which the nonwoven fabric elongate body and the reinforcement sheet elongate body were integrally laminated | stacked by the pad formation process is formed. For this reason, the tensile strength of the hemostatic pad elongate body is greater than that of the non-woven fabric elongate body alone, and is greater than the tension per unit width at which the non-woven fabric elongate body alone deforms or breaks beyond tolerance. It is possible to transport the hemostatic pad elongate body while applying a predetermined tension, for example, a predetermined tension larger than the tension per unit width that can be applied to the non-woven fabric elongate body in the pad forming process, to the predetermined shape. The bandage provided with the hemostatic pad can be produced stably and at high speed, and the productivity of the bandage can be improved. In this transporting process, the tension applied to the long hemostatic pad must be less than the tension at which the long hemostatic pad is deformed or broken, but the nonwoven fabric may be deformed or broken beyond tolerance. Even if the tension to be applied is applied to the long hemostatic pad, the tensile strength of the long hemostatic pad is relatively high, so that it is difficult to break.

The bandage which concerns on one Embodiment of this invention is shown, (a) is a top view, (b) is a bottom view of the state which fractured | ruptured one part. It is sectional drawing along the II-II line shown to Fig.1 (a). It is a schematic block diagram of the manufacturing apparatus for manufacturing a hemostatic pad elongate body. It is a schematic block diagram of the manufacturing apparatus for manufacturing a bandage.

  Hereinafter, the bandage 1 which is one embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

  The adhesive bandage 1 in this embodiment has the base material sheet 10, the hemostatic pad 20, and the peeling sheet 30, as shown in FIG.1 and FIG.2. The adhesive bandage 1 of the present embodiment peels the release sheet 30 from the base sheet 10 and then applies the hemostatic pad 20 to the bleeding wound site and affixes the base sheet 10 in the vicinity of the wound site. Used for hemostasis.

  The base sheet 10 has a rectangular planar shape that is long in the left-right direction A in FIG. In addition, the planar shape of the base material sheet 10 may be a square, a circle, or the like, and may be formed in various shapes and sizes depending on the type of use, the size of the wound site, and the like. In addition, the base sheet 10 is formed by using a flexible film or nonwoven fabric made of a synthetic resin material having excellent stretchability such as soft vinyl chloride, polyethylene, and polyurethane. These may be provided with embossing or ventilation holes, but may be flexible using various other commonly used materials.

  As shown in FIG. 1B, an adhesive layer 12 is formed on one surface 11 of the base sheet 10 that faces the release sheet 30. The pressure-sensitive adhesive layer 12 is composed of a pressure-sensitive adhesive applied to substantially the entire one surface 11 of the base sheet 10. For example, an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, or the like is used as the pressure-sensitive adhesive, but various other commonly used pressure-sensitive adhesives can be used.

  Moreover, the base material sheet 10 has the folding | returning part 13, as shown in FIG.1 and FIG.2. The folded portion 13 is formed by bringing the right end of the base sheet 10 in the figure into the one surface 11 side and bringing the adhesive layers 12 into close contact with each other. For this reason, as shown in FIG. 2, the folded portion 13 of the base material sheet 10 is covered with the release sheet 30 but is not attached. Thereby, it becomes possible to easily peel off the base sheet 10 from the release sheet 30 by grasping the folded portion 13.

  The hemostatic pad 20 has a predetermined shape, and has a rectangular planar shape that is long in the left-right direction A as shown in FIG. As shown in FIG. 2, the hemostatic pad 20 includes a non-woven fabric 21 and a reinforcing sheet 22, and is integrally laminated with an adhesive 23. The nonwoven fabric 21 and the reinforcing sheet 22 in the present embodiment are both formed in the same planar shape and planar size, but may have different shapes and planar sizes. Although the adhesive 23 in this embodiment is arrange | positioned at the whole region between the surface 21a which opposes the reinforcement sheet 22 of the nonwoven fabric 21, and the surface 22a which opposes the nonwoven fabric 21 of the reinforcement sheet 22, it is arrange | positioned partially, It may be arranged. In short, the adhesive 23 only needs to be able to bond the nonwoven fabric 21 and the reinforcing sheet 22 and may be formed in a predetermined pattern of lines or dots. Further, the adhesive 23 is made of, for example, a synthetic rubber hot melt adhesive. As an example, the synthetic rubber-based hot melt adhesive contains a styrene-butadiene-styrene copolymer.

  In addition, the nonwoven fabric 21 and the reinforcing sheet 22 may be integrally laminated by heat welding, or may be laminated integrally by an anchor effect by performing uneven processing on surfaces facing each other and pressing them together.

  As shown in FIG. 1B, the hemostatic pad 20 has a length in the left-right direction A that is the longitudinal direction and a length in the width direction B that is orthogonal to the left-right direction A, both shorter than the base sheet 10. It is narrower than one side 11 of the sheet 10. Further, the hemostatic pad 20 is disposed at the center of the one surface 11 so as not to protrude from the one surface 11 of the base sheet 10, and is adhered to the one surface 11 by the adhesive layer 12. Thereby, the adhesion layer 12 is arrange | positioned so that the perimeter of the hemostatic pad 20 may be enclosed, as shown in FIG.1 (b). Thereby, when covering a wound site | part with the adhesive bandage 1 which peeled the peeling sheet 30, the perimeter of the hemostatic pad 20 of the base material sheet 10 sticks on the wound site | part vicinity. For this reason, leakage of blood or the like from the adhesive bandage can be suppressed.

  In addition, the length of the width direction B which is a conveyance direction in the manufacture process of the hemostatic pad 20 may be the same as the length of the base material sheet 10 and the width direction B. In this case, the adhesive layer 12 is disposed on both sides of the hemostatic pad 20 in the left-right direction A, and is not disposed on both sides of the hemostatic pad 20 in the width direction B. Further, the hemostatic pad 20 may be bonded to the one surface 11 of the base sheet 10 with an adhesive made of a component different from the adhesive layer 12. In this case, the adhesive layer 12 does not have to be provided at a location facing the hemostatic pad 20 on one side 11.

  The nonwoven fabric 21 is formed by using, for example, a needle punch method using a fibrous alginate (a hemostatic component). Thereby, if the nonwoven fabric 21 is applied to a wound site | part, the bodily fluid which flows out from a wound site | part will be absorbed. By absorbing the body fluid, a part of the nonwoven fabric 21 is dissolved and gelled, and a wet state suitable for healing of the wound site can be maintained, and calcium ions and the like that promote blood coagulation are released. Thereby, it becomes possible to promote coagulation of blood at the wound site, and an excellent hemostatic effect can be obtained. The body fluid mainly includes blood and exudate. The cations constituting the alginate include, for example, calcium, sodium, or both.

  Although the alginate is employ | adopted as the hemostatic component, the nonwoven fabric 21 of this embodiment may be formed from oxycellulose, oxidized collagen, or cellulose sodium, for example. Moreover, the nonwoven fabric 21 may be formed by combining a plurality of hemostatic components among alginate, oxycellulose, oxidized collagen, and sodium cellulose. In short, the non-woven fabric 21 contains a hemostatic component, and absorbs the bodily fluid flowing out from the wound site, so that a part thereof dissolves and gels, releases ions and the like that promote blood coagulation, and coagulates the blood at the wound site. Anything that can be promoted is acceptable. Even in these cases, an excellent hemostatic effect can be obtained.

The nonwoven fabric 21 in the present embodiment has higher liquid permeability than the base sheet 10 and a bulk density of 5.0 × 10 ⁻² g / cm ³ . The preferable range of the bulk density of the nonwoven fabric 21 is 4.0 × 10 ⁻² g / cm ^{3 to} 20.0 × 10 ⁻² g / cm ³ . When the bulk density of the nonwoven fabric 21 is 4.0 × 10 ⁻² g / cm ³ or more, fluffing on the surface of the nonwoven fabric 21 is suppressed, a uniform and smooth surface can be obtained, and gelled alginate fibers can be used for hemostasis. A sufficient amount of ions and the like are preferable because they are released to the wound site. When the bulk density of the nonwoven fabric 21 is 20.0 × 10 ⁻² g / cm ³ or less, the nonwoven fabric 21 can absorb the body fluid from the wound site well, the alginate fiber is easily gelled, and the shape of the skin It is preferable because it has sufficient flexibility to easily fit. As described above, when the bulk density of the nonwoven fabric 21 is 4.0 × 10 ⁻² g / cm ³ or more, the absorbability of body fluid is improved and blood coagulation is easily promoted.

  The reinforcing sheet 22 is formed of, for example, a synthetic resin film, a woven fabric, a non-woven fabric, or a material obtained by combining some or all of them. As the reinforcing sheet 22 in this embodiment, a sheet having a higher tensile strength than the nonwoven fabric 21 is employed. More specifically, the tensile strength of the reinforcing sheet 22 in this embodiment is 4.9 N / 25 mm, and the tensile strength of the nonwoven fabric 21 is 1.47 N / 25 mm. As described above, when the tensile strength of the reinforcing sheet 22 is higher than that of the nonwoven fabric 21, the shape of the nonwoven fabric 21 can be effectively maintained, and the shape of the nonwoven fabric 21 is not easily broken.

  The reinforcing sheet 22 is thinner than the nonwoven fabric 21 as shown in FIG. More specifically, the thickness of the nonwoven fabric 21 in the present embodiment is, for example, 2.7 mm, while the thickness of the reinforcing sheet 22 is, for example, 30 μm. As a result, the tensile strength can be improved while reducing the thickness of the hemostatic pad 20. Further, the reinforcing sheet 22 has a surface 22 b opposite to the non-woven fabric 21 bonded to the one surface 11 of the substrate sheet 10 via the adhesive layer 12. That is, the reinforcing sheet 22 is laminated on the base material sheet 10 side of the nonwoven fabric 21 and is disposed between the nonwoven fabric 21 and the base material sheet 10. Thereby, since the ion discharge | released from the nonwoven fabric 21 reaches | attains a wound site | part more easily than what laminated | stacked the reinforcement sheet 22 on the surface (surface which contacts a wound site | part) of the nonwoven fabric 21 at the peeling sheet 30 side. Coagulation of blood by the hemostatic component is further promoted.

  The liquid permeability of the reinforcing sheet 22 in the present embodiment is lower than that of the nonwoven fabric 21, but may be the same as that of the nonwoven fabric 21 or higher than that of the nonwoven fabric 21. The liquid permeability of the base sheet 10 is lower than that of the nonwoven fabric 21, but the liquid permeability of the reinforcing sheet 22 may be lower than or the same as that of the base sheet 10, and even higher. May be. In order to make the skin around the wound site less susceptible to stuffiness, the base sheet may form a through hole to improve air permeability. In this case, blood adsorbed on the non-woven fabric leaks to the outside or moisture is absorbed. There is a risk of entering the wound site from the outside. When the liquid permeability of the reinforcing sheet is lower than that of the base sheet, it is possible to prevent moisture from entering the wound site from the outside through the nonwoven fabric, or from leaking blood or the like from the wound site through the nonwoven fabric, It is preferable because the waterproofing performance and leakage-proof performance of the adhesive bandage can be improved.

  The reinforcing sheet 22 in the present embodiment is bonded only to the surface 21a of the nonwoven fabric 21, but the reinforcing sheet 22 may also be provided on the surface 21b opposite to the surface 21a of the nonwoven fabric 21 (surface that contacts the wound site). Good. That is, the reinforcing sheets 22 may be provided on both sides of the nonwoven fabric 21 with respect to the thickness direction of the hemostatic pad. This further improves the tensile strength of the hemostatic pad. Furthermore, in the manufacturing process of the adhesive bandage, the front and back of the hemostatic pad are lost, so that it becomes easy to handle. In this case, the liquid permeability of the reinforcing sheet 22 is preferably higher than that of the nonwoven fabric 21. For example, a mesh-like one may be employed. Further, the reinforcing sheet 22 may be provided only on the surface 21 b of the nonwoven fabric 21. Even in this case, the tensile strength of the hemostatic pad is improved as compared with the hemostatic pad not having the reinforcing sheet 22.

  The release sheet 30 is attached to the one surface 11 so as to cover the entire one surface 11 side of the substrate sheet 10 while sandwiching the hemostatic pad 20 with the substrate sheet 10. The release sheet 30 is made of a suitable material such as synthetic resin, paper, or a laminated sheet thereof. In addition, the release sheet 30 has a silicone layer (not shown) formed on the entire surface facing the base sheet 10, and the silicone layer and the adhesive layer 12 are in direct contact with each other. Thereby, the peeling sheet 30 can be easily peeled from the one surface 11 of the base sheet 10.

  In addition, the peeling sheet 30 may be comprised from the two peeling parts divided into 2 in the left-right direction A. In this case, the two peeling portions may partially overlap at a position facing the hemostatic pad 20. If it carries out like this, it will become easy to peel the peeling sheet 30 from the base material sheet 10, even if the folding | turning part 13 is not provided.

  Then, the manufacturing method of the adhesive bandage 1 is demonstrated. In the manufacture of the adhesive bandage 1 in the present embodiment, a line different from the production line of the adhesive bandage 1, that is, the long hemostatic pad long body 120 manufactured off-line is used. First, the manufacturing method of the hemostatic pad elongate body 120 is demonstrated below, referring FIG.

  The manufacturing apparatus 100 shown in FIG. 3 is an apparatus that manufactures the hemostatic pad elongated body 120, and includes original fabric rolls 51 and 52, conveyance roller pairs 53 and 54, an adhesive application unit 55, and a winding unit 56. . The original fabric roll 51 is formed by winding a long reinforcing sheet elongated body 122 that is a material of the reinforcing sheet 22. The raw fabric roll 52 is formed by winding a long nonwoven fabric long body 121 that is a material of the nonwoven fabric 21.

  First, the long reinforcing sheet 122 is fed from the original roll 51, and the long reinforcing sheet 122 is conveyed toward the conveying roller pair 54 by the conveying roller pair 53. The nonwoven fabric long body 121 is unwound from the raw fabric roll 52, and the nonwoven fabric long body 121 is wound up by the transport roller pair 54 in a state where the nonwoven fabric long body 121 is superposed on the upper surface of the reinforcing sheet long body 122 transported by the transport roller pair 53. Transport toward means 56. At this time, the reinforcing sheet long body 122 and the non-woven fabric long body 121 are transported while being pressed in a direction approaching each other in the stacking direction by the transport roller pair 54. At this time, the adhesive 23 is applied to the entire upper surface of the long reinforcing sheet 122 by the adhesive application means 55 in the conveyance path between the conveyance roller pair 53 and the conveyance roller pair 54. Thereby, the reinforcing sheet long body 122 and the nonwoven fabric long body 121 are bonded to each other by the conveying roller pair 54 and are conveyed to the winding means 56.

  The tension applied to the nonwoven fabric long body 121 from the raw fabric roll 52 to the conveying roller pair 54 is such that the nonwoven fabric long body 121 does not deform or break beyond tolerance. The feeding force from the counter roll 52 and the conveying force by the conveying roller pair 54 are adjusted.

  Thus, the long hemostatic pad long body 120 formed by bonding the reinforcing sheet long body 122 and the non-woven fabric long body 121 is wound up by the winding means 56, and the original fabric roll 57 is manufactured (pad). Forming step).

  In addition, the hemostatic pad long body 120 may be formed by manufacturing a wide hemostatic pad long body and then cutting it to a predetermined width along the length direction with a slitter. If it carries out like this, a nonwoven fabric elongate body and a reinforcement sheet elongate body can also employ | adopt a wide thing, and it becomes possible to make these conveyance speed comparatively quick.

  Next, the manufacturing method of the adhesive bandage 1 using the manufactured long hemostatic pad elongate body 120 is demonstrated, referring FIG.

  A manufacturing apparatus 101 shown in FIG. 4 is an apparatus that manufactures the adhesive bandage 1 using the long hemostatic pad 120, and includes rolls 57 to 59, conveyance roller pairs 61, 65, and 66, a hemostatic pad cutting means 62, and a pad. A sticking means 63, an adhesive application means 64, a folding means 67, and a cutting means 68 are included. The raw fabric roll 58 is formed by winding a long base sheet long body 110 that is a material of the base sheet 10. The original fabric roll 59 is formed by winding a long release sheet long body 130 as a material of the release sheet 30.

  First, the long hemostatic pad 120 is unwound from the original roll 57, and the long hemostatic pad 120 is conveyed toward the hemostatic pad cutting means 62 by the conveying roller pair 61 (conveying step). In the process of transporting the hemostatic pad long body 120, members such as the transport roller and the guide roller that are in contact with the hemostatic pad long body 120 are located on the reinforcing sheet long body 122 side of the hemostatic pad long body 120 as much as possible. Arranged to touch.

  The hemostasis pad cutting means 62 is for cutting the hemostasis pad elongated body 120 so that the length in the transport direction becomes a predetermined dimension, and is disposed on the upper side of the hemostasis pad elongated body 120 and has a cutting blade (not shown) ) And a pad suction roll 62b that is disposed on the lower side of the long hemostatic pad 120 and sucks the long hemostatic pad 120 and the cut hemostatic pad 20 to the outer peripheral surface. . The pad cut roll 62a and the pad suction roll 62b have a rotation axis in the width direction orthogonal to the conveying direction of the hemostatic pad long body 120, and are provided across the entire width direction of the hemostatic pad long body 120. The hemostatic pad 20 is cut out from the long hemostatic pad 120 by synchronous rotation.

  The pad suction roll 62b has a plurality of suction portions (not shown) formed at substantially equal intervals in the circumferential direction on the outer periphery. Each suction portion is formed with, for example, a plurality of suction holes communicating with a vacuum case (not shown) provided inside the pad suction roll 62b from the cut position to the sticking position, and the pad cut roll 62a. The hemostasis pad 20 cut out by the above is transported to a position where it is affixed to the long base material sheet 110 while adsorbing the hemostasis pad 20.

  The peripheral speed of the pad suction roll 62 b is faster than the feeding speed of the hemostatic pad long body 120 from the raw fabric roll 57. For this reason, the distal end portion of the long hemostatic pad 120 is pulled by the suction force of the suction portion and slips between the pad suction roll 62b until it is cut. The portion is adsorbed by the adsorbing portion as the hemostatic pad 20 and conveyed by the pad adsorbing roll 62b. For this reason, the hemostatic pad 20 can be conveyed while adsorbing the outer periphery of the pad adsorbing roll 62b at an appropriate interval in the circumferential direction.

  In addition, the conveyance speed which conveys the hemostatic pad elongate body 120 from the raw fabric roll 57 to the hemostatic pad cutting | disconnection means 62 is set according to the production speed of the adhesive bandage 1, and in the pad formation process, the nonwoven fabric elongate body 121 is made into The speed is adjusted to be higher than the speed at the time of conveyance. Further, the long hemostatic pad 120 receives a rotational force from the pad suction roll 62 b that rotates at a higher speed than the feeding speed from the original fabric roll 57. For this reason, the hemostatic pad long body 120 is applied with a tension larger than the tension per unit width that can be applied to the nonwoven fabric long body 121 in the pad forming process. However, the hemostatic pad long body 120 is reinforced by the reinforcing sheet long body 122. The transport speed of the hemostatic pad long body 120 and the peripheral speed of the pad suction roll 62b are the same as those of the hemostatic pad long body 120. The tension is set so as not to break. Thereby, the hemostatic pad elongate body 120 is conveyed without deforming or breaking beyond tolerance.

  The base material sheet long body 110 is unwound from the original roll 58, and the base material sheet long body 110 is transported toward the pad sticking means 63 by the transport roller pair 65. At this time, in the conveyance path between the conveyance roller pair 65 and the pad pasting means 63, the adhesive application means 64 applies the adhesive to the entire upper surface (the upper surface that becomes the one surface 11) of the long base sheet 110. The adhesive layer 12 is formed. In addition, in this embodiment, although the adhesive material was apply | coated in the conveyance path | route of the base material sheet elongate body 110 and the adhesive layer 12 was formed, it replaces with this and the base material sheet by which the adhesive layer 12 was previously formed in the single side | surface The long body 110 may be used, and in this case, the adhesive material applying means 64 can be omitted. Furthermore, the base material sheet elongate body 110 in which the adhesive layer 12 is previously formed on one surface may be covered with the release sheet for base material sheet, and this base material sheet elongate body 110 is used. In this case, the base sheet release sheet is removed before attaching the hemostatic pad long body 120 or the hemostatic pad 20 cut to a predetermined size.

  The pad sticking means 63 includes a pad adsorbing roll 62b disposed on the upper side of the base sheet long body 110, and a base sheet length at the sticking position of the hemostatic pad 20 disposed on the lower side of the base sheet long body 110. And a pad pressing roll 63a that contacts the scale member 110. The pad adsorbing roll 62b is also used as the hemostatic pad cutting means 62 and transports the hemostatic pad 20 from the cut position while adsorbing the adsorbing portion. However, when the adhering position is reached, the adsorbing force of the hemostatic pad 20 to the adsorbing portion is conveyed. Is configured to be released. The pad suction roll 62b and the pad pressing roll 63a have a rotation axis in the width direction orthogonal to the conveyance direction of the base sheet long body 110, and are provided across the entire width direction of the base sheet long body 110. The hemostatic pad 20 is attached to the long base material sheet 110 via the adhesive layer 12 in synchronization with the conveyance of the long base material sheet 110.

  After the hemostatic pad elongated body 120 is conveyed to the hemostatic pad cutting means 62 by the conveying roller pair 61, the hemostatic pad elongated body 120 is cut by the hemostatic pad cutting means 62 to sequentially form the hemostatic pad 20. Then, the hemostatic pad 20 is conveyed to the application position by the pad adsorbing roll 62b, and the hemostatic pad 20 is applied to the long base material sheet 110 via the adhesive layer 12 by the pad application means 63 (pad application process).

  Next, the base material sheet long body 110 to which the hemostatic pad 20 is affixed is conveyed by the pad affixing means 63 toward the conveyance roller pair 66. At this time, in the conveyance path between the pad sticking means 63 and the conveyance roller pair 66, one end in the width direction of the base sheet long body 110 (that is, the left-right direction A, which is the longitudinal direction of the adhesive bandage 1) by the folding means 67. The part (the end on the back side of the paper surface in FIG. 4) is folded back from below to bond the adhesive layers 12 together (folding step). In this way, a folded portion 13 that is continuous along the conveying direction is formed at one end portion of the base sheet long body 110. In this embodiment, the folding step is performed after the pad pasting step. However, if the adhesive layer 12 is formed on the long base sheet 110, the folding step may be performed before the pad pasting step. Good.

  In the state where the release sheet long body 130 is fed from the original roll 59 and the release sheet long body 130 is superposed on the upper surface of the base sheet long body 110 which has been transported by the pad sticking means 63, the pair of transport rollers 66. Then, it is conveyed toward the cutting means 68. At this time, the conveying roller pair 66 conveys the base sheet long body 110 and the release sheet long body 130 while pressurizing them in a direction approaching each other in the laminating direction, and the release sheet long body 130 is attached to the adhesive layer 12. Then, the adhesive sheet plaster precursor body 102 is formed by being attached to the base material sheet long body 110 (a precursor body forming step).

  The cutting means 68 cuts the adhesive bandage 102 between the adjacent hemostasis pads 20 substantially linearly across the entire width direction, and is provided on the upper side of the bandage precursor 102 and has a cutting blade on the outer periphery. A sheet cut roll 68a provided (not shown), and a cutting receiving roll 68b provided below the adhesive plaster casing 102 and receiving the sheet cut roll 68a at the cutting position. The sheet cut roll 68a and the cutting receiving roll 68b have a rotation axis in the width direction orthogonal to the conveyance direction of the adhesive bandage 102, and are provided across the entire width direction. By rotating in synchronization with each other, the adhesive bandage 102 is sequentially cut between the hemostatic pads 20. In the present embodiment, the cutting means 68 cuts the adhesive bandage 102 across the entire width direction. However, the cutting means 68 may leave only a part of the elongated sheet 130, for example. You may comprise so that it may cut, leaving a part of the width direction of the front frame 102. FIG.

  After forming the adhesive bandage 102, the adhesive bandage 102 is transported to the cutting means 68 and appropriately cut between the hemostatic pads 20 of the bandage precursor 102, and the above-mentioned adhesive bandages 1 are sequentially formed (cutting step). Thus, the manufacture of the adhesive bandage 1 is completed.

  As described above, according to the adhesive bandage 1 of the present embodiment, the hemostatic pad 20 is configured by integrally laminating the nonwoven fabric 21 and the reinforcing sheet 22. For this reason, the tensile strength of the hemostatic pad 20 is greater than that of the hemostatic pad having only the nonwoven fabric 21. By adopting such a configuration that the tensile strength of the hemostatic pad 20 is increased in this way, the tension that causes the nonwoven fabric 21 to deform or break beyond the tolerance in the long hemostatic pad 120 that becomes the hemostatic pad 20 in the manufacturing process. Even if it is applied, the hemostatic pad elongate body 120 is unlikely to be deformed or broken beyond tolerance. For this reason, it becomes the adhesive bandage 1 which has the hemostatic pad 20 with which the shape loss was suppressed and was maintained in the predetermined shape, having a nonwoven fabric containing a hemostatic component, and productivity improves.

  According to the manufacturing method of the adhesive bandage 1, the hemostatic pad long body 120 in which the nonwoven fabric long body 121 and the reinforcing sheet long body 122 are integrally laminated is formed in the pad forming process. For this reason, the tensile strength of the hemostatic pad long body 120 becomes larger than that of the nonwoven fabric long body 121 alone, and the tension per unit width at which the nonwoven fabric long body 121 alone deforms or breaks beyond tolerance. Conveying the hemostatic pad elongate body 120 while applying to the hemostatic pad elongate body 120 a predetermined tension larger than a predetermined tension, for example, a tension per unit width that can be applied to the nonwoven fabric elongate body 121 in the pad forming process. Thus, the adhesive bandage 1 including the hemostatic pad 20 having a predetermined shape can be stably produced at high speed, and the productivity of the adhesive bandage 1 can be improved. In this transporting process, the tension applied to the hemostatic pad long body 120 needs to be less than the tension at which the hemostatic pad long body 120 is deformed or broken, but the nonwoven fabric 21 may be deformed beyond tolerance. Even if the breaking tension is applied to the hemostatic pad long body 120, the tensile strength of the hemostatic pad long body 120 is relatively large, so that it is difficult to be deformed or broken. And since a hemostatic pad becomes difficult to deform | transform, it can suppress that a wrinkle arises in the base material sheet which affixed the hemostatic pad.

  Further, in the pad forming process, the hemostatic pad long body 120 is wound up in a roll shape, and in the transporting process, the hemostatic pad long body 120 is unwound from the original fabric roll 57 formed in a roll shape and transported. Is done. For this reason, the conveyance speed of the nonwoven fabric long body 121 in a pad formation process can be set to arbitrary conveyance speeds different from the speed which conveys the hemostatic pad long body 120 after that, and the tension | tensile_strength concerning the nonwoven fabric long body 121 is restrained small. It becomes possible.

  Moreover, it becomes possible to form the folding | returning part 13 which does not stick to the peeling sheet elongate body 130 in the one end part of the base material sheet elongate body 110 by performing a folding process. For this reason, in the adhesive bandage 1, it is possible to easily peel the base sheet 10 from the release sheet 30 by grasping the folded portion 13.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, in the above-described embodiment, the hemostatic pad 20 having a predetermined length in the transport direction is formed by the hemostatic pad cutting means 62, and the hemostatic pad 20 is formed on the base sheet long body 110 via the adhesive layer 12. However, the long hemostatic pad 120 may be attached to the long base material sheet 110 via the adhesive layer 12 as it is. And the adhesive bandage precursor body in which the peeling sheet elongate body 130 is affixed is cut | disconnected sequentially by the cutting means 68, and an adhesive bandage is manufactured. In the bandage formed at this time, the length in the width direction B of the hemostatic pad 20 is the same as the length in the width direction B of the base sheet 10.

  In the pad forming step, the long hemostatic pad 120 does not have to be wound into a roll. Further, the production line for producing the hemostatic pad long body 120 may be in the production line for producing the adhesive bandage 1.

  The reinforcing sheet only needs to increase the tensile strength of the nonwoven fabric 21, and the tensile strength of the reinforcing sheet 22 may be equal to or lower than the tensile strength of the nonwoven fabric 21. Further, the thickness of the reinforcing sheet 22 may be equal to or greater than the thickness of the nonwoven fabric 21. In addition, the release sheet 30 can be easily formed from the base sheet 10 by constituting the release sheet 30 from two release parts or omitting the formation of the adhesive layer 12 at a portion along one end of the base sheet 10. In the case of peeling, the folded portion 13 may not be provided. In this case, in the process of manufacturing the adhesive bandage 1, the folding step of folding back a part of the base sheet long body 110 may be omitted.

DESCRIPTION OF SYMBOLS 1 Adhesive bandage 10 Base material sheet 11 Single side | surface 12 Adhesive layer 13 Folding part 20 Hemostatic pad 21 Nonwoven fabric 22 Reinforcement sheet 30 Release sheet 102 Adhesive plaster precursor 110 Base material sheet elongate body 120 Hemostatic pad elongate body 121 Nonwoven fabric elongate body 122 Reinforcement sheet Long body 130 Release sheet long body

Claims (11)

A base sheet having an adhesive layer formed on one side;
A hemostatic pad having a non-woven fabric containing a hemostatic component and bonded to the one surface without protruding from the one surface of the base sheet;
A release sheet that covers the one side so as to be peeled off so as to sandwich the hemostatic pad with the base material sheet,
The adhesive layer is disposed on both sides of the hemostatic pad with respect to at least one direction of the in-plane direction of the one surface when viewed from a direction perpendicular to the one surface,
The adhesive dressing, wherein the hemostatic pad has a reinforcing sheet integrally laminated on at least one surface of the nonwoven fabric.   The adhesive bandage according to claim 1, wherein the hemostatic component is at least one of alginate, oxycellulose, oxidized collagen, and sodium cellulose.   The adhesive bandage according to claim 1 or 2, wherein the adhesive layer is disposed so as to surround the entire circumference of the hemostatic pad when viewed from a direction perpendicular to the one surface.   The adhesive plaster according to any one of claims 1 to 3, wherein the reinforcing sheet has higher tensile strength than the nonwoven fabric.   The adhesive bandage according to claim 4, wherein the reinforcing sheet has a thickness smaller than that of the nonwoven fabric. The bulk density of the nonwoven fabric adhesive bandage according to any one of claims 1 to 5, characterized in that 4.0 × 10 ^-2 g / cm ³ or more.   The bandage according to any one of claims 1 to 6, wherein the reinforcing sheet is laminated on the base sheet side of the nonwoven fabric.   The bandage according to any one of claims 1 to 7, wherein the base sheet has a folded portion formed by folding one end of the base sheet in the one direction to the one side. A pad forming step of integrally laminating a reinforcing sheet long body on at least one surface of a nonwoven fabric long body containing a hemostatic component to form a long hemostatic pad long body in the transport direction;
A transporting process for transporting the hemostatic pad elongated body;
The hemostatic pad long body transported in the transporting process, or the hemostatic pad formed by cutting the hemostatic pad long body so that the length in the transporting direction becomes a predetermined dimension, in the transporting direction. A pad pasting step to be pasted at a predetermined position on one side where an adhesive layer of a long base sheet sheet is formed;
After the pad pasting step, a precursor body forming step of pasting a release sheet long body that is long in the transport direction to the adhesive layer of the base sheet long body to form a plaster precursor body;
A method of manufacturing a bandage, comprising: a cutting step of cutting the bandage precursor body to form a bandage. In the pad forming step, the hemostatic pad elongate body is wound into a roll to produce a raw roll,
The method for manufacturing an adhesive bandage according to claim 9, wherein in the transporting step, the hemostatic pad elongated body fed from the raw fabric roll is transported.   11. The method according to claim 9, further comprising a folding step of folding one end of the base sheet long body in a direction perpendicular to the transport direction to the one side before the front body forming step. The manufacturing method of the adhesive bandage as described in 2.

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