JPH01240589A - Medical tacky tape - Google Patents

Abstract

PURPOSE:To obtain the above tape having sufficient tack during use, extremely readily peelable after use, by using a tacky agent having properties to reduce tack by action imparted from the outside such as ultraviolet rays, etc. CONSTITUTION:For example, a tacky agent of an ultraviolet light curing type is used as a tacky agent and a medicinal tape maintains sufficient tack during treatment. When the tape is peeled, the surface of the bonded tacky tape is irradiated with ultraviolet rays, the tacky agent is crosslinked and cured to extremely reduce tack. The tacky agent composition is prepared by properly selecting compounds from a photosensitive resin, photopolymerizable oligomer, photopolymerizable monomer, reactive diluent, photopolymerization initiator, polymerization promoter, chain transfer agent, etc. and blending.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a medical adhesive tape that is applied to the surface of the outer skin of various animals including humans, and which has sufficient adhesive properties during use when applied to an adherend. The present invention relates to a medical tape that has adhesive properties but can be easily scraped when peeled off after use.

[Conventional technology]

Conventional methods for treating trauma to the human body include applying a therapeutic agent locally and pasting protective tape over it, and applying adhesive tape pre-applied or containing a therapeutic agent to the local area. ing. In addition, as a method of treating or preventing diseases not only on the surface of the human outer skin but also on internal organs and other organs of the human body, medical adhesive tapes coated with or containing prescribed drugs utilize the transdermal absorption function of drugs. There is also a method of applying drugs to the surface of the outer skin of the human body and treating or preventing diseases through the medicinal effects of the drug absorbed into the body.

[Problem to be solved by the invention]

In order to achieve the therapeutic purpose, so-called medical adhesive tapes, which consist of medical aid tapes and disease treatment tapes, must have strong adhesion so that they do not come off due to various movements of the human body during treatment. However, it was often painful to remove the adhesive tape from the surface of the human body after the therapeutic objective had been achieved or the medicinal efficacy had been lost. Further, in other cases, it is not preferable as it often causes damage or deformation to the adjacent affected area which has not been completely treated.

The situation is the same for animals other than humans. Animals such as large horses, cows, and cats have dense hair on their body surfaces.
Pulled using medical adhesive tape? , there are far more troubles when dealing with humans than with humans.

[Means to solve the problem]

The present invention solves the above-mentioned drawbacks of conventional medical adhesive tapes, and has sufficient adhesion to the surface of the animal's skin during treatment, and is adhesive when removed from the surface of the skin after the purpose of treatment is completed. An object of the present invention is to provide a medical adhesive tape which has significantly reduced properties and can be peeled off very easily.

That is, the medical adhesive tape of the present invention is a medical adhesive tape that is used by being applied to the surface of the outer skin of various animals including humans, and the transferable adhesive tape that has been applied to the surface of the outer skin of the animal as an adherend is applied to the outside of the adherend. When peeled off from the skin surface, the adhesive strength of the tape is reduced by an externally applied action (stimulus).

In the present invention, the means for reducing the adhesive force is to apply external heat, electricity, magnetism, radiation including light, mechanical waves including sound waves and gas flows to the adhesive tape attached to the surface of the outer skin of various animals. By applying an external stimulus (action) such as force, water, or chemical substances including alcohol. Various other means can be considered, but the essential point is to use a tape that uses an adhesive that has the property of decreasing its adhesiveness in response to such external action (stimulus). Sometimes two or more types of effects (stimulation) are used in combination instead of a single effect. The external action (stimulus) applied to the pasted tape should be one that does not involve deformation such as vibration or adhesion or removal of substances to the pasted part, such as electromagnetic waves or a single line of the moon, and should not be controlled by control operations. This is because it is easy and painless.

In order to specifically describe the content of the present invention, a case will be taken as an example in which radiation including light is applied from the outside. This is a method of producing an adhesive tape having as a constituent component an adhesive whose adhesive properties are reduced by ultraviolet irradiation. Medical adhesive tapes are generally made from a polymer support such as polyvinyl chloride, polyethylene, polyurethane, or ethylene-vinyl acetate copolymer, or a support made of cloth or nonwoven fabric, and auxiliary materials such as drugs, adhesives, and separators. It is configured. Here, the adhesive is an ultraviolet-curable adhesive that maintains sufficient adhesive strength during treatment, and when it is removed, the attached adhesive tape is irradiated with ultraviolet rays from its surface to cross-link the adhesive. When cured, the adhesive strength is significantly reduced.

The main feature of the present invention is that it uses an adhesive whose adhesive strength is reduced by the action (stimulation) of external application such as ultraviolet rays. An adhesive whose adhesive strength can be reduced by ultraviolet rays, appropriately selected from photopolymerizable resins, photopolymerizable oligomers, photopolymerizable monomers, reactive diluents, photopolymerization initiators, polymerization accelerators, chain transfer agents, etc. Mix and use the composition.

For example:

A photopolymerizable compound having at least two photopolymerizable carbon-carbon double bonds in the molecule and a photopolymerization initiator are added to a pressure-sensitive adhesive such as a rubber-based adhesive such as natural rubber or various synthetic rubbers, or an acrylic-based adhesive. This is a composition formed by blending the following. Here, the acrylic pressure-sensitive adhesive is a homopolymer whose main constituent unit is ester of acrylic acid or methacrylic acid, a copolymer with a copolymerizable comonomer, or a mixture thereof. Further, the compound having a carbon-carbon double bond is a radiation polymerizable monomer, oligomer, or polymer, for example,
These include acrylates, methacrylates, cyanurates, and isocyanurates.

A particularly preferred UV-curable adhesive is an adhesive comprising 100 parts by weight of an acrylic adhesive and 5 to 500 parts by weight of at least one compound selected from the group of cyanurate compounds or isocyanurate compounds having a carbon-carbon double bond. It is.

The degree of decrease in adhesive strength caused by external effects such as ultraviolet rays is generally 50% or less of that of ON to which external effects are applied.

It is also possible to reduce this to 10% or less. In particular, 5%
The following is most desirable:

It is preferable that external effects such as ultraviolet irradiation be applied only to the adhesive tape portion to which it is attached, and to be shielded with a cover or the like so that it does not extend beyond the tape portion.

[Example] 100 parts by weight of an acrylic adhesive (a copolymer of 2-ethylhexyl acrylate and n-butyl acrylate) and 2.5 parts by weight of a polyison atom compound (trade name: Coronate L, manufactured by Nippon Polyurethane Co., Ltd.) 1 part, 35 parts by weight of dipentaerythritol hexaacrylate and 1 part of α-hydroquine cyclohexyl phenyl ketone as a photopolymerization initiator.
parts by weight were added and mixed to prepare a radiation-curable acrylic adhesive. Next, on a support made of cotton cloth,
A cloth coated with this adhesive and used as a medical aid tape 1.
'[I created a system. From this, 50u+mX 100
Two small rectangular pieces of the torso were cut out, and one piece was pasted on each of the left and right legs (Ili and shins) of an adult male.

When removing the adhesive tape on the right leg after 2 days,
When I used a small ultraviolet lamp to cover the periphery of the attached tape so that only the surface of the tape was irradiated with ultraviolet light and then peeled it off, it came off extremely easily (almost instantaneously) and I felt no pain at all. There wasn't. On the other hand, for the left leg, an attempt was made to do pull I and II without irradiating it with ultraviolet rays. It took a long time (approximately 30 minutes) to pull it off and caused great pain.

For reference, the adhesive force was measured using a stainless steel plate (SUS304) as an adherend in accordance with JIS ZO237, and it was found that the adhesive force used decreased to 5% or less when irradiated with ultraviolet rays.

[Effects of the invention] In the coming era when transdermal treatment systems will continue to advance in the treatment and prevention of diseases in animals including humans,
This medical adhesive tape has extremely easy and reliable removability.
It is extremely useful.

Patent applicant: Furukawa Electric Co., Ltd.

Claims (1)

[Claims] In medical adhesive tapes that are applied to the surface of the outer skin of various animals, including humans, when the adhesive tape is removed from the surface of the animal's outer skin after being applied to the surface of the animal's skin, it is necessary to remove it from the outside. A medical adhesive tape characterized by having the property that the adhesive strength of the tape decreases due to an applied action (stimulus).