KR20020029998A - Adhesive coating sheet system - Google Patents

Abstract

PURPOSE: A system with adhesive coating sheet suitable to apply in medical and/or sanitary products, heat and/or moisture insulation sheet, waterproof sheet is provided to remove wrinkles and generation of blocking and to easily handle the system by simply placing the system in a desired position. CONSTITUTION: The system comprises a fundamental base layer(10), an adhesive layer(20) and a releasing layer(30) with folding straight grooves(31). The grooves are arranged by 0.5-50mm intervals. The releasing layer is separated perpendicular to the straight grooves when using the system. The releasing may have a side tap(32) as a handle portion(34) longer than lengths of the base and the adhesive layers in order to easily divide the releasing layer without contamination of the adhesive layer. The adhesive layer may contain medicine and/or cosmetic components.

Description

Adhesive Coating Sheet System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive coating sheet system attached to the skin, such as a medical / sanitary article, a thermal insulation / moisture sheet, and a waterproof sheet to which the skin penetrating medicine or cosmetic ingredient is applied.

Currently, one of the most commonly used skin adhesion systems is film dressing. It is coated with a pressure-sensitive adhesive layer on a base layer made of a flexible and stretchable polymer film (e.g., urethane film), and then coated with a release layer thereon, such as wound dressing, IVH care dressing, It is used for surgical drapes and waterproof dressings. Wound dressing maintains a moisturizing condition, which is the best environment for skin treatment, and protects the skin from foreign substances and bacterial infections. The IVH protective dressing makes the catheter insert easy to observe, prevents bacterial infection and prevents phlebitis due to the movement of the catheter. It also has the ability to block water, so it is often used as a surgical drape or waterproof dressing. In addition, they do not interfere with skin respiration due to gas exchange in addition to the above functions.

In addition, a flexible and stretchable nonwoven fabric is used instead of the film, but is mainly used in the form of a pharmaceutical or cosmetic ingredient contained in the pressure-sensitive adhesive layer, and is suitable for applications requiring long time and / or repeated attachment due to gas exchange. Do.

However, these sheets must have skin followability (the property of folding and stretching together as the skin folds and stretches), so that the base layer must be flexible and elastic. There is a characteristic that becomes difficult to do. This is because the shape is not maintained, but when the adhesive layers are inadvertently contacted, they are stuck to each other (blocking) and cannot be used. And, such handling difficulties are exacerbated as the dimension increases. Moreover, in the case of medical use, sterilization should be maintained, but if a finger or the like comes into contact with the pressure-sensitive adhesive layer, there is a fear that a new infection will be contaminated. In addition, when a smooth attachment is not performed, wrinkles are generally generated, but the appearance is damaged, but in the case of medical use, the blocking function for the infectious agent is lost, and when used as a waterproof dressing, the waterproofing property is lost.

Therefore, various attempts have been made to prevent the attachment miss as described above.

Japanese Patent Publication No. 62-28994 (Minnesota Mining and Manufacturing Company, 3M) has a half-cut so that the release layer (ground) covering the base film (base layer) has a film attached to at least three main parts of the outer periphery. A film dressing system is disclosed in which the inner part of the frame is removed when attached to the skin by half cut, and the outer part is removed after the inner part is attached. However, although blocking is prevented due to the presence of the outer frame, wrinkles may occur due to the lack of tension in the film inside the frame. In particular, when used as an IVH protective dressing, it is not suitable when applied to the skin in which the unevenness exists, and it cannot sufficiently prevent a finger from touching the adhesive layer. In addition, since many parts are required, the manufacturing process is complicated and expensive.

In Japanese Patent Application Laid-Open No. 59-141943 (Johnson & Johnson Product Co., Ltd.), the release layer covering the pressure-sensitive adhesive layer is divided into three sheets. One sheet in the center is removed, and two sheets on the outer side are kept in place. Then, the film dressing system which completes attachment while removing an outer peeling layer is disclosed. However, this can prevent a finger from touching the adhesive face, but preventing wrinkles and blocking is not sufficient. In addition, when the absorbent pad is attached, there is little possibility of wrinkles or blocking on the part of the flexible base layer only.

In addition, the modified system of Japanese Patent Application Laid-Open No. 62-28994 has a side tab attached to remove the release layer covering the base layer, and a half cut line is provided instead of the tab (center cut method). have. However, in either type, since the base layer and the release layer are considerably supportive, it is difficult to adhere smoothly. In particular, there is a problem when the adhesive layer is adhered to the skin having irregularities such as IVH inserts, gauzes, absorbent pads, and the like.

In addition, in the medical surgical dressing, some of them are overlapped by using two peeling layers, but wrinkles and blocking are less likely to occur.

Even if the additives are excellent in drug efficacy and the like, the evaluation may not be good if they cannot be finally attached smoothly. In addition, the more complicated the structure, the more likely the attachment miss will occur and the more expensive it becomes.

The object of the present invention is that there is no fear of wrinkles and blocking and can be easily adjusted to a position to be attached, so that handling is easy, and in particular, when sterilization is to be maintained, there is no fear of finger contact with the adhesive surface. To provide a pressure-sensitive adhesive coating sheet system that can be efficiently manufactured with a simple manufacturing equipment.

1 illustrates a case where a folding groove is formed on a peeling surface.

2 illustrates a case where the folding V-shaped groove is formed on the non-peeled surface.

3 illustrates a case where side tabs are provided on a release layer.

4 illustrates a case where a part or all of the release agent is removed in a strip form from the release layer.

FIG. 5 shows a case where the release layer is divided into two parts and separated from the center.

FIG. 6 illustrates a case where a pad exists in the case of FIG. 5.

** Explanation of symbols for main parts of drawings **

10: base material layer 20: pressure-sensitive adhesive layer

30: release layer 31: folding groove

32: side tab 33: release agent removal site

34: handle 40: pad

The pressure-sensitive adhesive coating sheet system of the present invention for achieving the above object is basically, for folding on the peeling surface of the release layer in the pressure-sensitive adhesive coating sheet system consisting of the base material layer 10, the pressure-sensitive adhesive layer 20 and the release layer 30. It is characterized in that the straight groove 31 is formed.

1 illustrates a process of detaching a release layer in the most basic configuration of the present invention, from which the release layer can be separated by a unit (between the groove and the groove for folding), thereby easily controlling the detachment process. It can be seen that it can be made.

The folding straight grooves may be formed on the non-peeled surface (the back surface of the peeled surface) of the release layer. In this case, the cross section is preferably V-shaped for smooth separation of the release layer.

The space | interval of the said groove | channel for folding is set to 0.5-50 mm, and at the time of use, a peeling layer is isolate | separated in the perpendicular direction of a straight groove | channel. In addition, the depth of the folding groove depends on the peeling strength of the peeling layer to be used, the adhesive strength of the pressure-sensitive adhesive layer, etc., but if the depth is too deep, the supportability of the peeling layer is weakened and the supportability of the entire sheet is weakened. Decide on your range.

The side tabs 32 may be provided with the release layer longer than the base layer and the pressure-sensitive adhesive layer. Side tabs are handles when used. In the case where both the pressure-sensitive adhesive layer 20 and the peeling layer 30 are the same length as shown in FIG. 1, precise handwork is required to separate the first peeling surface, and the pressure-sensitive adhesive layer may be contaminated in this process. If present, the release layer can be easily separated, reducing the probability of contamination.

The release layer is coated with a release agent, that is, a component (eg, polyethylene) that does not adhere to the pressure-sensitive adhesive layer, and is separated from the pressure-sensitive adhesive layer. If a part of the coated release agent is removed in a band shape, the release layer can be separated more precisely from the pressure-sensitive adhesive layer. Can be. For example, as shown in FIG. 4, if the strip 33 is removed from the folding groove on the basis of the peeling direction, and then separated to the folding groove, a larger force is required, so that more precise work can be performed. It can be seen that. In other words, by temporarily stopping or lowering the peeling rate, the pressure-sensitive adhesive layer is not exposed more than necessary, thereby reducing the probability of occurrence of wrinkles or blocking.

The release layer may be separated into two parts and detached from the center. In this case, it can be easily adjusted to the position where the center is to be attached and is shown in FIG.

Moreover, a pad can also be arrange | positioned in the center of an adhesive layer. In this case, it is more essential to take the structure of FIG.

The pressure-sensitive adhesive coating sheet system can be used for therapeutic or cosmetic purposes if the pressure-sensitive adhesive layer contains a medicament or cosmetic ingredients.

As a base material layer, the polyurethane film of thickness 15-50 micrometers is used, As a pressure-sensitive adhesive layer, thickness is 30-70 micrometers, A well-known rubber-type or acrylic adhesive is used. In the case of medical use, you may arrange | position a pad in the center of an adhesive layer. As a material in the case of using the pad, a known material such as cotton, chemical fiber or nonwoven fabric may be used, and may contain a disinfectant or other chemicals. As a peeling layer, a well-known material can be used without a restriction | limiting in particular.

As described above, according to the pressure-sensitive adhesive coating sheet system of the present invention, the area of the pressure-sensitive adhesive layer to be exposed can be appropriately adjusted to prevent wrinkles and blocking. In particular, in the case of medical use, it is possible to prevent contamination of the finger contact with the adhesive surface and to easily position the position where you want to attach.

In addition, only the base material layer, the pressure-sensitive adhesive layer and the release layer can be produced efficiently with a simpler manufacturing equipment.

Claims (8)

A pressure-sensitive adhesive coating sheet system composed of a base material layer, a pressure-sensitive adhesive layer and a release layer, characterized in that a straight groove for folding is formed on the release surface of the release layer. The pressure-sensitive adhesive coating sheet system of claim 1, wherein the folding straight groove is formed on a non-peeled surface of the release layer. The pressure-sensitive adhesive coating sheet system according to claim 1 or 2, wherein an interval between the folding grooves is 0.5 to 50 mm. The pressure-sensitive adhesive coating sheet system according to claim 1 or 2, wherein the length of the release layer is longer than that of the base layer and the pressure-sensitive adhesive layer so that side tabs are provided. The pressure-sensitive adhesive coating sheet system according to claim 1 or 2, wherein a part or all of the release agent coated on the release layer is removed in a band shape. The pressure-sensitive adhesive coating sheet system according to claim 1 or 2, wherein the pressure-sensitive adhesive layer contains a medicament or a cosmetic ingredient. The pressure-sensitive adhesive coating sheet system according to claim 1 or 2, wherein the release layer is divided into two parts and separated from the center to the outside. The pressure-sensitive adhesive coating sheet system according to claim 7, wherein a pad is present in the center of the pressure-sensitive adhesive layer.