JPH04180755A - Skin contact member for internal discharges processing kit - Google Patents

Abstract

PURPOSE:To improve the expansion/contraction characteristic and the gas permeability, and to directly couple the skin contact member to a thermoplastic formed part by thermal welding by forming a base material by nonwoven fabric of an ethylene vinyl acetate copolymer compound. CONSTITUTION:A skin contact member 1 consists of a base material 2, a adhesive 3 applied to one side of the base material 2, and peeling paper 4 for protecting the adhesive 3. The base material 2 is, for instance, circular, provided with an opening 5 in the center part, and on the opposite side to the side provided with the adhesive 3, a thermoplastic formed part such as a bag-like object or a fitting structure body being a component of an internal discharges processing kit is provided. Also, the base material 2 is formed by nonwoven fabric of an ethylene vinyl acetate copolymer compound. In such a way, it is stuck to the opening part and even if a load is applied in accordance with motion of the human body and it stretches, the modulus does not become so large, its gas permeability and operability are satisfactory, and also, it can be fixed directly to the bag-like object and the fitting structure body coupled to the skin contact member 1 by thermally melt--sticking.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is a method for containing and treating various solid or liquid wastes discharged from the body through an opening formed in a part of the body. The present invention relates to a cherry bark member used in a device for treating body excreta.

[Conventional technology]

Patients who have undergone open surgery due to illness, have a colostomy or artificial bladder, patients with renal paralysis, thin stomach, intestinal paralysis, etc., patients with urinary incontinence, and patients who require a drain after surgery. , Excretions from the body, i.e. feces, urine, = 1 = Since it is not possible to control or process secretions etc. by one's own will, internal excreta are disposed of in orifices of the human body, i.e. artificial openings, thinning, excretory ducts, etc. The orthosis is fixed and allows the waste to be temporarily stored in it. This body excreta disposal device is formed from a cherry bark member and a bag or cap attached to one side of the cherry bark member, and is fixed to an opening in the body with an adhesive provided on the other side of the cherry bark member. The structure is such that the waste is stored in a bag-like material or temporarily stored in a cap through the opening of the cherry bark member. Note that there are two methods for joining the bag or cap to the cherry bark member: a one-piece type in which the bag is fixed around the opening of the cherry bark member and the two are integrated; A second fitting structure is provided around the opening of the cherry bark member, and a second fitting structure that fits liquid-tightly with the first fitting structure is provided around the opening of the cherry bark member. There is a two-piece type in which an object or a cap can be attached and detached via a fitting structure.

The base material of the cherry bark member plays a major role in determining the operability and range of use of the device for treating body excreta. Typical features of this base material include the ability to apply adhesive with a regular applicator, the ability to easily adhere to other items such as bags and mating structures, and the operational aspects. It is easy to apply and adapts well to the unevenness of the skin, it follows the movement of the skin well during use, it does not cause discomfort, and it does not get stuffy due to sweating.

To further elaborate on these points, in terms of manufacturing, the substrate is difficult to stretch under the tension applied when using normal adhesive application equipment, and other materials such as bags or mating structures In terms of operation, when the release paper that protects the adhesive layer is removed from the cherry bark material, the cherry bark material has elasticity and maintains its shape, and the adhesive surfaces do not touch each other until it is pasted on the opening. It does not adhere or deform, and even if the skin around the opening is uneven, it blends well without wrinkles, and during use, it follows the expansion and contraction of the skin.
It is necessary that it does not twitch, nor does it lift or crease when bent. To achieve this, it must be thin with a low modulus, and have the strength to withstand a certain amount of load in the relatively small range of initial elongation, and beyond that, it must have a modulus that is easy to elongate and has a small load, and with the exception of release paper. It is desirable that the material has enough elasticity to prevent it from curling or deforming, and that it can be heat-welded to other materials.

The base materials for conventional cherry bark members can be roughly divided into three types: nonwoven fabric type, film type, and foam type. Non-woven fabric type is made of non-woven fabric made of rayon, polyethylene, polypropylene, polyester, nylon, urethane, or a mixture thereof, and has good breathability and water vapor permeability, and does not hinder skin breathing even when applied to the body. , which has the advantage of not suppressing sweating.

However, non-woven fabrics other than urethane-based fabrics have too little elasticity and do not follow body movements, resulting in a feeling of tension and discomfort. In addition, polyolefin-based materials are generally used for bag-like objects and fitting structures due to their economic efficiency, gas barrier and water-tightness, feel in contact with the skin, and ease of disposal after use, so polyethylene, polypropylene, Nonwoven fabrics other than the above have disadvantages such as weak adhesion and the need to use means for reinforcing adhesion between the base material and the bag-like object or fitting structure.

The second film type is one using polyethylene, chlorinated polyethylene, polyvinyl chloride, vinyl acetate, polyvinylidene chloride, urethane, and modified films thereof. They have poor elasticity, apart from urethane.
It has almost no breathability, feels very uncomfortable when applied, and easily peels off due to sweating, causing rashes because the skin does not breathe properly. On the other hand, urethane films are usually used with a thickness of about 20 to 100 μm.
It has the advantage of being highly elastic and able to sufficiently follow body movements. However, because the modulus during stretching is high, the stress of constantly trying to shrink when stretched is applied to the skin, which causes a sense of discomfort.Also, the film has no stiffness at all, and when the release paper on the adhesive is removed when applying it. It is difficult to apply because the adhesive surfaces are bent or bent, and wrinkles often occur. As a result,
・It also has the disadvantage of causing a foreign body sensation due to the wrinkles of the fruit and leakage from the wrinkles. Furthermore, urethane film has better air permeability and water vapor permeability than other films, with a rate of 200 g/m/
Although it exhibits relative physical properties before heating at 24 h/40°C and 80% relative humidity, it is much worse than nonwoven fabrics and causes peeling when there is a lot of sweating, such as during sports or in the summer.

The third foam type is polyisobutylene, polyethylene,
The base material is a foam made of polyvinyl chloride, polyvinyl acetate, polyurethane, or a copolymer thereof. These foams usually have a thickness of about 0.5 to 2.0 mm, and have elasticity and some stretchability, so they can cover the drawbacks of the urethane films mentioned above, but they do not have liquid tightness. In order to retain the material, the foam is made of closed cells and lacks air permeability.

[Problem to be solved by the invention]

The purpose of the present invention is to have elasticity in multiple directions, a modulus that does not stretch under a load similar to the tension applied when adhesively processing the base material of a cherry bark member, and a release paper. The cherry bark material does not curl until it is pasted on an opening of the human body.It has a value that can maintain a firm waist without sagging, and when it is pasted on an opening, the load changes according to the movement of the human body. Even if it stretches, the modulus does not increase that much, it is thin, has good breathability and operability, does not wrinkle or lift during use, does not feel uncomfortable, and is suitable for pouches and fittings that are combined with cherry bark members. It is an object of the present invention to provide a cherry bark member that can be directly fixed to a composite structure by heat welding.

[Means to solve the problem]

In order to achieve the above-mentioned object, in the skin-contacting member for a device for treating body excreta of the present invention, the base material is formed of a nonwoven fabric based on ethylene-vinyl acetate copolymer.

The vinyl acetate copolymer used in the present invention is a copolymer of ethylene and vinyl acetate, but its physical properties can be changed by changing the molecular weight of ethylene or the content of vinyl acetate. As the vinyl acetate content increases, flexibility increases, but heat weldability deteriorates. Therefore, the content ratio of ethylene and vinyl acetate is 90:10.
The ratio is preferably in the range of 40:60. In addition, polybutene, DOP, DBP, liquid rhodisoester, etc. containing 50% or less of polybutene, DOP, DBP, liquid rhodisoester, It is also possible to add plasticizers and softeners such as low molecular weight styrene resins and chlorinated paraffins. As a method for producing the nonwoven fabric, it is particularly advantageous to use a direct spinning method in which the above-mentioned copolymer is melted and spun into a sheet through a nozzle while at the same time forming a sheet, and in particular, a melt blowing method is used.

The basis weight of the nonwoven fabric is preferably in the range of 50 to 200 g/n (preferably 80 to 120 g/n). Also, it is preferable that the nonwoven fabric is bulky and has a low density. A non-woven fabric with increased density while leaving a non-woven fabric or a non-woven fabric partially welded by embossing can be used.

The physical properties of the nonwoven fabric are 200% in both the vertical and horizontal directions.
or more, and 2.0 kg/cA or more at 50% elongation, 2
It is preferable that the material exhibits a certain degree of modulus even at initial elongation, such as 5.0 kg/cd or less even at 00% elongation, and that the modulus does not increase even after elongation. Further, it is preferable that the difference in modulus is small in both the longitudinal and lateral directions, and that the difference in modulus values at each elongation is within 50%. Air permeability should be 1 cc/cnl·seC or more.

[Effect]

The cherry bark member of the present invention utilizes the various physical properties of the nonwoven fabric made of ethylene vinyl acetate copolymer, and in particular, it stretches well both in the vertical and horizontal directions,
The adhesive has a stretching property that elongates little up to a certain level of load, and elongates even with a slight increase in load beyond that limit load. When worn, it does not curl or sag even if the release paper is removed, it follows the movements of the body well during use, does not cause any discomfort such as tightening on the skin even when stretched out, and is breathable. It prevents stuffiness due to its elasticity and moisture permeability, and its melting point of 70°C to 120''C allows it to be directly bonded by heat welding to thermoplastic moldings that form bag-like objects, fitting structures, etc.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1a and 1b are a longitudinal sectional view and a plan view of a cherry bark member according to the present invention. Reference numeral 1 denotes a cherry bark member, which consists of a base material 2, an adhesive 3 applied to one side of the base material 2, and a release paper 4 for protecting the adhesive 3. The base material 2 is circular in the illustrated example, has an opening 5 in the center, and has a bag-like material or a fitting structure, which is a component of the body excrement treatment device, on the side opposite to the side where the adhesive 3 is provided. A thermoplastic molding is provided. This point will be discussed later. Base material 2 is a nonwoven fabric made of ethylene-vinyl acetate copolymer by a direct spinning melt-blowing method, and the characteristics of this example are shown in Table 1 along with conventional comparative examples. The general physical properties of the ethylene-vinyl acetate copolymer nonwoven fabric are as follows: basis weight 50 g/rW, thickness 250 μm, tensile strength 90 g/cm vertically, 120 g/cm+ horizontally, and elongation 1 vertically.
70%, width 200%, tear strength 1.20 g 7cm
, the melting point is 80°C.

Adhesive 3 is an acrylic ester adhesive consisting of acrylic acid, butyl acrylate, and 2-ethylhexyl acrylate, and has a weight of 45 g/dry to ensure breathability.
rd is applied to the entire surface.

Table 1 Table 1 (continued) In the table, Sample 1.2 is an ethylene-vinyl acetate copolymer nonwoven fabric, and Sample 3 is a urethane nonwoven fabric.

Sealing performance is against polyethylene, bending resistance is 5c
+++ This is a value measured using a Rigaku Kogyoshi Loop-Book Stiffness Tester on a test piece measuring 8.5 cm in size. As can be seen from the values in this table, the base material according to the present invention has almost equal elongation properties in the longitudinal and transverse directions, and has a smaller value than that of the conventional material, and the modulus of the urethane nonwoven fabric is 10
When set to 0, EVA is 39% in the longitudinal direction and 76% in the transverse direction at 50% elongation, and 40% in the longitudinal direction and 59% in the transverse direction at 100% elongation.
%, 2°0% elongation results in 34% in the longitudinal direction and 54% in the transverse direction, and the EVA is less than half that of the urethane type. In areas with slight elongation, there is no difference in stress change between EVA and urethane, and they can handle the tension required during adhesive processing.

In addition, EVA can be thermally welded well to polyethylene, polypropylene, EVA, etc. used as materials for bag-like objects and fitting structures that are bonded to cherry bark members, whereas urethane-based materials are similar to EVA. Thermoplastic but not weldable. Furthermore, EVA has stronger waist strength than urethane.

Figures 2a and 2b are a longitudinal side view and a rear view, respectively, of an example of the one-piece body excrement disposal device using the cherry bark member shown in Figure 1, and the same parts as in Figure 1 are designated by the same reference numerals. It is. 6 is a pouch with inner film 7 and outer film 8.
The outer periphery 9 is sealed and bonded by heat welding, and the opening 10 of the inner film 7 is directly bonded to the seal portion 11 at the periphery of the opening 5 of the cherry bark member 1 by heat welding.
The pouch 6 is integrated with the cherry bark member 1. The material for the pouch 6 is polyethylene, chlorinated polyethylene, three-layer material of polyethylene/polyvinylidene chloride/polyethylene, ethylene-vinyl acetate copolymer, etc. with a thickness of 0.1 r.
Films around am are preferred.

When wearing this brace, the release paper 4 is removed and the cherry bark member 1 is pressed onto the skin with the adhesive 3 so that the opening 5 is in contact with the opening of the human body.

Exhaust material from the body passes through the opening 5 of the cherry bark member 1 and the opening 10 of the inner film 7 of the pouch and is accommodated in the pouch 6.

Figures 3a and 3b are a simplified view of the longitudinal side and the back opening of an example of the tree piece-type body excreta treatment equipment using the cherry bark member shown in Figure 1, and the same parts as in Figure 1 are designated by the same reference numerals. It is attached. 12 is a pouch with an inner film 13 and an outer film 14
The outer periphery 15 is sealed by heat welding, and
The inner film 13 is provided with an opening 16. 17 is the first
The fitting structure is formed into a ring shape, and the opening 16 of the inner film 13 is connected to one side by heat welding.
A fitting projection 18 is provided on the other side. 19 is a second fitting structure formed in a ring shape, one side of which is bonded by heat welding to the surface of the cherry bark member 1 opposite to the adhesive 3, and the other side has the first fitting structure. A fitting groove 20 that pairs with the fitting protrusion 18 of the fitting structure 17 is provided.

The material for the pouch 12 may be the same as that described with reference to FIG. 2. The material for the first and second fitting structures 17.19 can be polyethylene, polypropylene, or a blend of these with ethylene-vinyl acetate copolymer. Molded objects are preferred. When wearing this brace, the pouch 2 is inserted into the cherry bark member 1 by pushing the fitting protrusion 18 of the first fitting structure 17 into the fitting groove 20 of the second fitting structure 19. Become one with
It is secured to the orifice of the human body in the same manner as the second bolt.

In the case of this device, the pouch 12 can be attached and detached as appropriate while the cherry bark member 1 is attached, and waste can also be disposed of by removing only the pouch.

[Effects of the Invention] According to the present invention, the ethylene-vinyl acetate copolymer nonwoven fabric has low modulus in both the longitudinal and lateral directions, so it conforms well to the unevenness of the skin and does not cause raised wrinkles or creases. It can be applied, follows the stretching and sliding of the skin during application, and has a small back stretch, so there is no discomfort, and because it has a waist, it does not curl or sag even when the release paper is removed during application. There are no mistakes when applying the adhesive, and there is little elongation even with the tension applied during the process of applying the adhesive to the base material, so the adhesive process is extremely easy, and ethylene vinyl acetate copolymer is required when applying the adhesive. Since it is not affected by solvents, there is no need to use special processing techniques such as spraying after complete drying, and it can be successfully heat-welded to thermoplastic moldings that are bonded to cherry bark components. In terms of air permeability and moisture permeability as a non-woven fabric, it is possible to obtain properties that are comparable to conventional ones.

[Brief explanation of drawings]

Figures 1a and b are longitudinal cross-sectional views and plan views of embodiments of the present invention, respectively, Figures 2a and b, and Figures 3a and b are of body excreta treatment equipment using the cherry bark member of the present invention. They are a longitudinal sectional view and a plan view of different examples, respectively. 1...Cherry bark member 2...Base material 3...Adhesive 2 diagram

Claims (1)

[Claims] 1) A skin-contacting member for a body excreta treatment device comprising a thermoplastic molded product on one side and an adhesive on the other side, characterized in that the base material is made of a nonwoven fabric based on ethylene vinyl acetate copolymer. Skin contact parts for material handling equipment.