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US-2024424473-A1 · Dec 26, 2024 · US
Laminate film using polylactic acid-based resin
US10119000B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10119000-B2 |
| Application number | US-201414772542-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2014 |
| Priority date | Mar 15, 2013 |
| Publication date | Nov 6, 2018 |
| Grant date | Nov 6, 2018 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Our invention is a laminate film comprising a water-soluble resin layer and a polylactic acid-based resin layer laminated on at least one side of a substrate film, the water-soluble resin layer has a thickness of 0.1 to 15 μm, the polylactic acid-based resin layer has a thickness of 10 to 500 nm. Such a configuration provides a laminate film of which the water-soluble resin layer and the polylactic acid-based resin layer are easily separated from the substrate film and which is excellent in coating ability, adherence and followability to a soft and curved adherend, as well as compatibility to skin and organs such as viscera, so as to be suitable for wound dressing, adhesion prevention material and a skin external agent such as skin-care product.
First claim
Opening claim text (preview).
The invention claimed is: 1. A laminate film comprising a water-soluble resin layer and a polylactic acid-based resin layer laminated on a polyester or polyolefin substrate film surface, wherein the water-soluble resin layer has a thickness of 0.1 to 15 μm, the polylactic acid-based resin layer has a thickness of 10 to 500 nm, and the substrate film surface has a center-line average surface roughness (SRa) of 3 to 50 nm and a ten-point average surface roughness (SRz) of 50 to 1000 nm. 2. The laminate film according to claim 1 , wherein the water-soluble resin layer contains a polyvinyl alcohol. 3. The laminated film according to claim 2 , wherein the polyvinyl alcohol has a saponification degree of 85 to 98.5 mol %. 4. The laminate film according to claim 1 , wherein the polylactic acid-based resin layer contains a polylactic acid-based resin including a poly-D-lactic acid of 4 to 13 mol %. 5. The laminate film according to claim 1 , wherein the water-soluble resin layer contains a pullulan.
Assignees
Inventors
Classifications
Polysaccharides or their derivatives {(A61L15/225 takes precedence)} · CPC title
of synthetic resin · CPC title
Polyesters derived from hydroxy carboxylic acids, e.g. lactones (C08J2467/06 takes precedence) · CPC title
- A61L15/24Primary
Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof {(A61L15/225 takes precedence)} · CPC title
Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids · CPC title
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- What does patent US10119000B2 cover?
- Our invention is a laminate film comprising a water-soluble resin layer and a polylactic acid-based resin layer laminated on at least one side of a substrate film, the water-soluble resin layer has a thickness of 0.1 to 15 μm, the polylactic acid-based resin layer has a thickness of 10 to 500 nm. Such a configuration provides a laminate film of which the water-soluble resin layer and the polyla…
- Who is the assignee on this patent?
- Toray Industries, Nanotheta Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification A61L15/24. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Nov 06 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).