Abstract: A support film for tape which is used for a tape, the support film for tape includes: a film-shaped support formed of polyurethane; and a barrier layer which includes a water-soluble polymer compound and montmorillonite and is formed on one surface of the support. The support film for tape has a percentage content of the montmorillonite in the barrier layer is equal to or more than 2 percent by weight and equal to or less than 22 percent by weight.

Abstract: A method for producing a patch comprising a support layer and an adhesive agent layer arranged on at least one surface of the support layer, the method comprising: a step A of obtaining an adhesive agent layer composition comprising oxybutynin hydrochloride as a drug, an acrylic-based polymer and/or a rubber-based polymer as an adhesive base agent, liquid paraffin, a sterol, an organic acid, and a tackifier; a step B of heating the adhesive agent layer composition at a temperature in a range from 55 to 70° C. for 1 to 24 hours; and a step C of cooling the heated adhesive agent layer composition to a temperature lower than room temperature at an average rate of temperature drop of 1 to 20° C./hour, thereby obtaining the adhesive agent layer comprising the drug at a supersaturated concentration in a dissolved form.

Abstract: A method for producing a patch having a high skin penetrability and a high pharmaceutical physical properties such as adhesion and cohesiveness, and a long-term storability. The patch is produced by first obtaining an adhesive agent layer composition containing oxybutynin and/or salt thereof as a drug, an acrylic-based polymer and/or a rubber-based polymer as an adhesive base agent, liquid paraffin, an organic acid, and a tackifier; heating the adhesive agent layer composition at a temperature in a range from a melting point of the drug to a temperature higher than the melting point by 10° C. for 2 to 24 hours; and slowly cooling the heated adhesive agent layer composition to obtain the adhesive agent layer comprising the drug at a supersaturated concentration in a dissolved form.

Abstract: A method for producing a patch comprising a support layer and an adhesive agent layer arranged on at least one surface of the support layer, the method comprising: a step A of obtaining an adhesive agent layer composition comprising oxybutynin hydrochloride as a drug, an acrylic-based polymer and/or a rubber-based polymer as an adhesive base agent, liquid paraffin, a sterol, an organic acid, and a tackifier; a step B of heating the adhesive agent layer composition at a temperature in a range from 55 to 70° C. for 1 to 24 hours; and a step C of cooling the heated adhesive agent layer composition to a temperature lower than room temperature at an average rate of temperature drop of 1 to 20° C./hour, thereby obtaining the adhesive agent layer comprising the drug at a supersaturated concentration in a dissolved form.

Abstract: A method for producing a patch having a high skin penetrability and a high pharmaceutical physical properties such as adhesion and cohesiveness, and a long-term storability. The patch is produced by first obtaining an adhesive agent layer composition containing oxybutynin and/or salt thereof as a drug, an acrylic-based polymer and/or a rubber-based polymer as an adhesive base agent, liquid paraffin, an organic acid, and a tackifier; heating the adhesive agent layer composition at a temperature in a range from a melting point of the drug to a temperature higher than the melting point by 10° C. for 2 to 24 hours; and slowly cooling the heated adhesive agent layer composition to obtain the adhesive agent layer comprising the drug at a supersaturated concentration in a dissolved form.

Abstract: A support film for tape which is used for a tape, the support film for tape includes: a film-shaped support formed of polyurethane; and a barrier layer which includes a water-soluble polymer compound and montmorillonite and is formed on one surface of the support. The support film for tape has a percentage content of the montmorillonite in the barrier layer is equal to or more than 2 percent by weight and equal to or less than 22 percent by weight.

Abstract: A support film for tape which is used for a tape, includes: a film-shaped support formed of polyurethane; and a barrier layer which includes polyvinyl alcohol and a layered inorganic compound, and which is formed on one surface of the support. The support film for tape has a degree of saponification of the polyvinyl alcohol is equal to or more than 70% and equal to or less than 95.5%.

Abstract: A medical adhesive patch includes: a support film including a barrier layer which contains polyvinyl alcohol and a layered inorganic compound, and which is laminated on one surface of a support including polyurethane; an adhesive layer which contains a medicine, and which is laminated on the barrier layer of the support film, a degree of saponification of the polyvinyl alcohol is equal to or more than 70% and equal to or less than 95.5%.