JPH0613821U - Medical tape - Google Patents

Abstract

(57) [Summary] [Purpose] It is easy to apply, does not cause skin tension when applied, and is used for parts that make fine movements such as joints and fingers, or for parts with complex shapes such as fingertips. Even when affixed, even if it provides a medical tape that has enough flexibility to follow the site and has no winding tightness, it has enough flexibility to follow the site and has no winding tightness (EN) A medical tape which has moisture permeability and has a good sticking feeling. In a medical tape having a pressure-sensitive adhesive layer formed on one surface of a synthetic resin film support, the support has a load of 200 to 900 g / 15 mm at 50% extension, and 5 seconds after 50% extension. 90% after stress residual rate
The stress residual ratio after 60 seconds or less is 75% or less.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a medical tape having a synthetic resin film as a support.

[0002]

[Prior art]

 Currently, various medical tapes are widely used as external medical members. Many of these medical tapes may not be sufficiently effective because they may cause skin tightness when applied, or peel off or rise when bent when applied to joints. So far, flexible medical tape has been studied, but if it becomes too flexible, it may lose its waist and cause wrinkles when it is applied, or it may be applied at a place different from where it is supposed to be. There's a problem.

[0003] Therefore, as a method of giving a support to the back, for example, in Japanese Utility Model Laid-Open No. 2-148526, a mount sheet is provided on the surface of the support opposite to the adhesive layer to facilitate attachment. However, this method has a problem that the structure is complicated and it is difficult to attach it to a surface having a large curvature.

Further, in Japanese Patent Laid-Open No. 3-161432, a stretchable support having a 50% modulus and a drape coefficient within a certain range is used, so that a complicated movement such as a neck or a flank is performed. Although a patch that can follow is also described, when the support by this method is a band-shaped patch that is wrapped around the finger, it can be bent by sticking it on the joint of the finger and bending it. However, there is a problem that the part is tightened and the blood flow is blocked. Furthermore, if the wire is pulled a little when it is wound, there will be a problem that the winding will be tightened after the winding is finished and the circulation of blood to the fingertip will be hindered. Such a problem is remarkable especially in the case of a synthetic resin film.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and an object thereof is to easily apply it, and to prevent sticking of the skin when applied, such as joints and fingers. To provide a medical tape that is flexible enough to follow the site even when it is attached to a site that makes fine movements or a site that has a complicated shape such as a fingertip, and that has no winding tightness. It is in.

[0006]

[Means for Solving the Problems]

 The medical tape of the present invention is a medical tape in which an adhesive layer is formed on one side of a synthetic resin film support, wherein the load at the time of 50% extension is 200 to 900 g / 15 mm, and The stress residual rate after 5 seconds from the time of 50% elongation is 90% or less, or the stress residual rate after 60 seconds is 75% or less, whereby the above object is achieved.

The present invention will be described in detail below. Examples of the synthetic resin film used for the support in the present invention include polyethylene, polypropylene, polybutene, polystyrene, polyamide, polyurethane, polyisoprene, polybutadiene, polyvinyl alcohol, silicone resin, plasticized polyvinyl chloride, polyurethane Plasticized polyvinyl chloride, plasticized vinyl acetate-vinyl chloride copolymer, ethylene-vinyl acetate copolymer, ethylene-vinyl chloride copolymer, ethylene- (meth) acrylic acid methyl copolymer, (meth) Acrylic acid alkyl ester (co) polymer, styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, styrene-ethylene-butadiene-styrene block copolymer, styrene-butadiene rubber, cellulose acetate , D Film made of a synthetic resin Le cellulose. You may use these synthetic resins individually or in mixture of 2 or more types.

For the molding of the synthetic resin film, usual molding methods such as extrusion molding, roll molding, inflation molding and hot press molding are used. The thickness of the synthetic resin film is preferably 10 to 500 μm, more preferably 25 to 100 μm.

As the support used in the present invention, when the load at 50% extension is small, the waist becomes weak and it becomes difficult to attach, and when the load at 50% extension is large, it is attached to joints and the like. When this is done, the movement cannot be followed, the skin becomes tight and peels off easily, and when it is wound around a finger, the tightening may occur. Therefore, the load is limited to the range of 200 to 900 g per 15 mm width of the support.

The load per 15 mm width at the time of 50% elongation is measured by the following method. Using a tensile tester, a strip type sample measuring 15 (width) x 40 (length) mm was stretched at a speed of 100 mm / min until the sample length reached 60 mm (extension rate 50%). The load at that time is measured and is taken as the load at 50% elongation.

Further, as the support used in the present invention, when the residual stress rate becomes large, the support cannot follow the movement of joints and the like, and the skin becomes tight, peeling or rising occurs, Further, when wound around a finger, winding tightening may occur, so that the stress residual rate after 5 seconds from 90% elongation is 90% or less, or after 60 seconds the stress residual rate is 75% or less.

The stress residual rate is a value calculated by the following equation. Residual stress rate (%) = (B / A) × 100 where A is the load (g / 15 mm) when the support is extended by 50%, and B is the state in which the support is extended by 50% and remains for t seconds. It is the load (g / 15 mm) when left to stand.

When the water vapor transmission rate (value measured according to JIS Z0208) of the support used in the present invention becomes small, rash and erythema due to unevenness occur when a medical tape is applied, and it becomes large. Since the drug is not effectively absorbed, the range of 80 to 500 g / m ² · 24 hr is preferable, and the range of 200 to 2000 g / m ² · 24 hr is more preferable.

The pressure-sensitive adhesive used to form the pressure-sensitive adhesive layer used in the present invention is an acrylic resin containing (meth) acrylic acid alkyl ester (co) polymer as a main component; styrene-isoprene-styrene block copolymer. Examples thereof include a rubber-based material containing a polymer, styrene-butadiene rubber, polybutene, polyisoprene, butyl rubber, and natural rubber as a main component; a polyurethane-based polymer; and a silicone-based polymer.

The thickness of the pressure-sensitive adhesive layer is preferably 20 to 300 μm.

The method for producing the medical tape of the present invention can be obtained, for example, by preparing an organic solvent solution or an aqueous dispersion of the above-mentioned pressure-sensitive adhesive, coating this on the support, and drying. To be Further, instead of using the above-mentioned solution or dispersion, a method of heating and melting an adhesive and coating this on a support is also adopted. Further, a method may be used in which the above solution, dispersion or melt is coated on release paper, dried, and a support is brought into close contact therewith.

The above-mentioned release paper is used for the purpose of protecting the pressure-sensitive adhesive layer, and for example, a film such as polyester, polyethylene-coated high-quality paper, polyolefin-coated glassine paper, polypropylene film, etc., which has been subjected to silicone release treatment on one side, is used.

The shape of the medical tape can be freely selected from a sheet shape, a band shape, a patch shape, a roll shape, and the like.

The constitution of the medical tape of the present invention is as described above, but a drug may be mixed in the adhesive layer, if necessary. The drug is not particularly limited as long as it is absorbed through the skin, and examples thereof include nonsteroidal anti-inflammatory agents, corticosteroids, antihistamines, antipruritic agents, antihypertensive agents, anesthetics, antifungals. Agents, antiepileptics, coronary vasodilators, hormones, antiphlogistics and analgesics, keratin softeners, antibiotics, antibacterial substances, sedatives, moisturizers, topical stimulants and the like. These can be used alone or in combination of two or more.

Examples of the above-mentioned non-steroidal anti-inflammatory agent include piroxicam, phenylbutazone, acetylsalicylic acid, flufenamic acid, ibuprofen, ketoprofen, flurbiprofen, sulindac, indomethacin, diclofenac, amphenac, fenbufen, tinoridine, emorfazone. And so on. Examples of corticosteroids include pretonisolone and clobetasol propionate.

Examples of antihistamines include diphenhydramine, diphenylimidazole, chlorpheniramine, and the like.

Antipruritic agents include, for example, crotamiton and the like, and antihypertensive agents include, for example, clonidine, nifedipine, propranol and the like.

The anesthetics include lidocaine, benzocaine and the like, the antifungal agents include clotrimazole, pentamycin and the like, and the antiepileptic agents include nitrozebam, meprobamate and the like.

Examples of coronary vasodilators include nitroglycerin and isosorbide dinitrate, and examples of hormone agents include estradiol.

Examples of the muscle relaxant include eperisone hydrochloride and the like, and examples of the anti-inflammatory / analgesic include methyl salicylate, glycol salicylate, glycyrrhizic acid, glycyrrhetinic acid, borneol, abacus powder, berberyl hydrochloride and the like.

Examples of the topical stimulant include capsicum (powder, extract, tincture), capsaicin, nonyl acid vanillyl amide, turpentine oil, dl-camphor, benzyl nicotinate, β-butoxyethyl nicotinate, peppermint oil, l -Menthol, eucalyptus oil, etc.

The medical tape of the present invention is flexible and does not wrap, and can be easily followed when it is attached to a part that moves in a fine motion, such as a fingertip, and can be used for bathing or for water work. , Especially keratinizing skin diseases such as ichthyosis, atopic dermatitis, psoriasis, progressive keratoderma palmaris, housewife eczema, hand eczema, plantar keratoses, contact dermatitis, cracks, cracks It is preferably used as a tape for diseases such as.

[0028]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. (Example 1) [Preparation of medical tape] On a release paper 1 obtained by subjecting a polyethylene terephthalate (PET) film having a thickness of 40 μm to a silicone treatment, a methacrylic acid-acrylic acid solution having a thickness of 40 μm after drying. After applying an n-butyl copolymer (manufactured by Nippon Acrylic Co., Ltd., trade name "Primal N-580", solid content 50% by weight), it was dried at 60 ° C for 30 minutes, and as shown in FIG. Layer 2 was formed. The pressure-sensitive adhesive layer 2 was transferred onto a porous polyethylene film (manufactured by Chubu Sekisui Kako Co., Ltd., trade name “Serpore S = 102”) having a thickness of 30 μm to prepare a medical tape 4.

[Performance Test] (1) Load Measurement at 50% Elongation The above porous polyethylene film was cut into a strip shape of 15 × 80 mm, and the center 40 mm was subjected to a tensile test in an atmosphere of 23 ° C. and relative humidity of 50%. Machine (Orientec Tensilon UCT-500) stretches to 60 mm (extension rate 50%) at a speed of 100 mm / min, and the load at that time is measured as "load at 50% extension", and the result is obtained. The results are shown in Table 1.

(2) Measurement of residual stress rate The above-mentioned porous polyethylene film was left in a stretched state up to 60 mm, and the load was recorded on a chart paper 5 seconds and 60 seconds after being stretched by 50%. The stress residual ratio (%) was calculated from the value obtained from the changes in the applied load, and the results are shown in Table 1.

(3) Measurement of water vapor transmission rate The water vapor transmission rate of the porous polyethylene film was measured according to JIS Z0208, and the results are shown in Table 1.

(4) Functionality Evaluation of Medical Tape The medical tape was cut into a size of 20 × 60 mm and attached to a joint part of a finger, and the functionality of the adhesiveness was evaluated. The evaluation was performed by 6 persons, and the average is shown in Table 1. The sensory evaluation of the medical tape was performed on the three items (a) and (b), and the evaluation was made based on the following criteria. (A) Sticking sensation: One in which the skin did not bulge and did not peel when bent was rated as ◯, and one in which the skin bulged and peeled when bent was rated as x. (B) Ease of sticking: A piece having a certain degree of elasticity and easy to stick was marked with ◯, and a piece having no waist and causing wrinkles during sticking was marked with x. (C) Tightness of winding: Those with no winding tightness even when wound around the finger were marked with +, and those with winding tightness around the finger were marked with −.

(5) Evaluation of Adhesiveness of Medical Tape The medical tape was cut into a size of 20 × 60 mm and applied to the skin of 6 persons, and after 6 hours, peeling was performed to observe the skin condition. The evaluation was performed by 6 people, and the average is shown in Table 1. The applicability of the medical tape was evaluated based on the following criteria. (D) Skin condition: ○ was applied when the applied part was not damp and did not cause redness, and x was when the applied part was damp or reddish.

Example 2 Other than using a plastic polyvinyl chloride film having a thickness of 50 μm (manufactured by Sekisui Chemical Co., Ltd., trade name “Esmedica”) instead of the porous polyethylene film as the support. A medical tape was produced in the same manner as in Example 1. The performance tests (1) to (5) were conducted on the medical tape and the support in the same manner as in Example 1, and the results are shown in Table 1.

(Example 3) As a support, an ethylene-methyl acrylate copolymer film having a thickness of 70 μm (manufactured by Chubu Sekisui Chemical Co., Ltd., trade name “Silk Ace”) was used instead of the porous polyethylene film. A medical tape was produced in the same manner as in Example 1 except for the above. The performance tests (1) to (5) were conducted on the medical tape and the support in the same manner as in Example 1, and the results are shown in Table 1.

Example 4 Example 1 was repeated except that a polyurethane film having a thickness of 50 μm (trade name “Silklon” manufactured by Okura Industry Co., Ltd.) was used as the support instead of the porous polyethylene film. Similarly, a medical tape was produced. The performance tests (1) to (5) were conducted on the medical tape and the support in the same manner as in Example 1, and the results are shown in Table 1.

Comparative Example 1 The same as Example 1 except that a 70 μm thick polyurethane film (trade name “Silklon” manufactured by Okura Industry Co., Ltd.) was used as the support instead of the porous polyethylene film. Similarly, a medical tape was produced. The performance tests (1) to (5) were conducted on the medical tape and the support in the same manner as in Example 1, and the results are shown in Table 1.

Comparative Example 2 Instead of the porous polyethylene film as a support, an adhesive tape having an ethylene-vinyl acetate copolymer film having a thickness of 60 μm as a substrate (manufactured by Sekisui Chemical Co., Ltd., trade name “Protect”) A medical tape was produced in the same manner as in Example 1 except that the tape ") was used. The performance tests (1) to (5) were conducted on the medical tape and the support in the same manner as in Example 1, and the results are shown in Table 1.

(Comparative Example 3) [0039] As a support, a polyethylene film having a thickness of 60 µm (manufactured by Chubu Sekisui Chemical Co., Ltd., trade name "SMPE60MC") was used as a support instead of the porous polyethylene film. A medical tape was produced in the same manner as in 1. The performance tests (1) to (5) were conducted on the medical tape and the support in the same manner as in Example 1, and the results are shown in Table 1.

Comparative Example 4 Instead of the porous polyethylene film, a 50 μm thick styrene-ethylene-butadiene-styrene block copolymer film (manufactured by Tonen Kagaku Co., Ltd., trade name “LABLAZE”) was used as a support. A medical tape was produced in the same manner as in Example 1 except that it was used. The performance tests (1) to (5) were conducted on the medical tape and the support in the same manner as in Example 1, and the results are shown in Table 1.

Comparative Example 5 Using a 200 μm thick plaster agent (manufactured by Yutoku Yakuhin Co., Ltd., trade name “Secour”, with an adhesive layer), the same procedures as in Example 1 were carried out (1) to (). The performance test of 5) was performed, and the results are shown in Table 1.

Comparative Example 6 A 40 μm-thick first-aid bandage (manufactured by Sekisui Chemical Co., Ltd., trade name “Sekisui Q Van SA”, with adhesive layer, perforated processed product) with the gauze pad in the center removed Was used and the performance tests (1) to (5) were conducted in the same manner as in Example 1, and the results are shown in Table 1.

[0043]

[Table 1]

[0044]

[Effect of device]

 The medical tape of the present invention has appropriate flexibility and expands following small movements, so it has a good feeling of sticking and has good adhesion so that peeling does not occur easily and the skin sticks out when sticking. Since there is no discomfort, there is no sense of incongruity, and even when wrapped around a finger, winding tightness does not occur. Further, since the medical tape of the present invention has an appropriate moisture permeability, it does not cause skin irritation such as rash and erythema due to stuffiness, and gives an excellent sticking feeling.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Release Paper 2 Adhesive Layer 3 Support 4 Medical Tape

Claims (1)

[Scope of utility model registration request] 1. A medical tape having a pressure-sensitive adhesive layer formed on one surface of a synthetic resin film support, which is 50% of the support.
The load during extension is 200 to 900 g / 15 mm, and the residual stress rate after 5 seconds from extension of 50% is 90%.
A medical tape having a stress residual ratio of 75% or less after or 60 seconds later.