US 11,655,395 B2
Support film for tape material, and tape material
Koji Sakairi, Tokyo (JP); Atsushi Matsushima, Tokyo (JP); Tomohiro Shinoda, Tsukuba (JP); and Atsushi Sonobe, Tsukuba (JP)
Assigned to TOPPAN PRINTING CO.. LTD., Tokyo (JP); and HISAMITSU PHARMACEUTICAL CO., INC., Tosu (JP)
Filed by TOPPAN PRINTING CO., LTD., Tokyo (JP); and HISAMITSU PHARMACEUTICAL CO., INC., Tosu (JP)
Filed on Jan. 31, 2019, as Appl. No. 16/263,525.
Application 16/263,525 is a continuation of application No. PCT/JP2017/027993, filed on Aug. 2, 2017.
Claims priority of application No. JP2016-153931 (JP), filed on Aug. 4, 2016.
Prior Publication US 2019/0161647 A1, May 30, 2019
Int. Cl. C09J 7/29 (2018.01); C09J 201/02 (2006.01); B32B 27/40 (2006.01); C09J 201/00 (2006.01)
CPC C09J 7/29 (2018.01) [B32B 27/40 (2013.01); C09J 201/00 (2013.01); C09J 201/02 (2013.01); C09J 2301/162 (2020.08); C09J 2400/12 (2013.01); C09J 2471/001 (2013.01); C09J 2475/001 (2013.01); C09J 2475/006 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An adhesive tape material, wherein:
the adhesive tape material comprises a support film for the tape material,
the support film comprises a film-shaped support formed of polyurethane,
the support film further comprises a barrier layer formed on one surface of the support,
the adhesive tape material further comprises an overcoat layer comprising polyvinyl alcohol and titanium lactate on the barrier layer of the support film,
the barrier layer comprises:
an aromatic isocyanate-based polyurethane, the aromatic isocyanate-based polyurethane being a water-based polyurethane, which is made in aqueous conditions, formed of isocyanate including an aromatic group on a main chain or side chain and polyol;
a synthetic mica having an average particle diameter of 11 μm or more; and
a glycerin, and
the adhesive tape material further comprises an adhesive layer formed on the overcoat layer,
wherein an amount of the glycerin is within a range of from 10 wt % to 15 wt % with respect to a total amount (100 wt %) of the aromatic isocyanate-based polyurethane and the synthetic mica, and
wherein the total amount (100 wt %) is from 20 wt % of the synthetic mica and 80 wt % of the aromatic isocyanate-based polyurethane to 10 wt % of the synthetic mica and 90 wt % of the aromatic isocyanate-based polyurethane.
 
7. An adhesive tape material, wherein:
the adhesive tape material comprises a support film for the tape material,
the support film comprises a film-shaped support formed of polyurethane,
the support film further comprises a barrier layer formed on one surface of the support,
the adhesive tape material further comprises an overcoat layer comprises polyvinyl alcohol and titanium lactate on the barrier layer of the support film,
the barrier layer consisting essentially of:
an aromatic isocyanate-based polyurethane, the aromatic isocyanate-based polyurethane being a water-based polyurethane, which is made in aqueous conditions, formed of isocyanate including an aromatic group on a main chain or side chain and polyol;
a synthetic mica having an average particle diameter of 11 μm or more; and
a glycerin, and
the adhesive tape material further comprises an adhesive layer formed on the overcoat layer,
wherein an aspect ratio of the synthetic mica is 1000 or greater,
wherein the synthetic mica comprises a plurality of flat structures, and the flat structures are stacked,
wherein an amount of the glycerin is within a range of from 10 wt % to 15 wt % with respect to a total amount (100 wt %) of the aromatic isocyanate-based polyurethane and the synthetic mica,
wherein the total amount (100 wt %) is from 20 wt % of the synthetic mica and 80 wt % of the aromatic isocyanate-based polyurethane to 10 wt % of the synthetic mica and 90 wt % of the aromatic isocyanate-based polyurethane,
wherein a water vapor permeability rate of a first support film constituted of the support film and the overcoat layer is smaller than a water vapor permeability rate of the support film, and
wherein the adhesive layer comprises a drug and an absorption rate of the drug into a skin is configured to be enhanced by an effect of occlusive dressing therapy (ODT).