HYALURONIC ACID-BASED DISSOLVING FILM, PRODUCTION METHOD THEREOF, AND RELEASE LINER USED FOR THE SAME (as amended)
AssigneeGenewel Co., Ltd
InventorsJun Ho KIM, Mi Ran CHO, Hye Ri LEE
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Abstract
The present invention relates to a hyaluronic acid-based dissolving film, a production method thereof, and a release liner used for the same, and more particularly to a method for producing a hyaluronic acid-based dissolving film that provides a hyaluronic acid-based dissolving film having high performance with high productivity through a continuous production process to allow mass production of the dissolving film, a hyaluronic acid-based dissolving film produced by the method, and a release liner suitable for the dissolving film.
Claims17
A continuous production method for a hyaluronic acid-based dissolving film, comprising:
- preparing a hyaluronic acid-based solution capable of being carried on a continuous production line;
- supplying a release paper to the continuous production line;
- continuously applying the hyaluronic acid-based solution on the upper side of the release liner supplied to the continuous production line;
- and
- drying the applied hyaluronic acid-based solution on the continuous production line to form a hyaluronic acid-based dissolving film.
A hyaluronic acid-based dissolving film comprising:
- a sheet layer selected from a mesh, a nonwoven fabric, and a release paper;
- and
- a hyaluronic acid-based dissolving film layer adhered on the sheet layer,
- wherein the mesh is selected from a nylon mesh, a PP mesh, and a PET mesh,
- wherein the unwoven fabric is selected from a nylon unwoven fabric, a PP unwoven fabric, and a PET unwoven fabric,
- wherein the release paper comprises a coating layer formed on the one side or both sides of a film selected from PET, corona treated PET, acrylic coated PET, silicon coated PET, and urethane coated PET,
- wherein the coating layer comprises at least one selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, and polyvinyl pyrrolidone.
A release paper comprising a film layer;
- and an adhesive layer applied on the one side or both sides of the film layer by coating,
- wherein the release paper has a lead content of 50 ppm or less and a cell viability (ISO 10993-5, based on negative control) of 90% or above,
- wherein the film is selected from PET, corona treated PET, acrylic coated PET, silicon coated PET, and urethane coated PET,
- wherein the adhesive layer comprises 70 to 85 wt. % of polyvinyl acetate and 15 to 30 wt. % of polyvinyl pyrrolidone.
Dependencies are inferred from the claim text.