Cosmetic method
US-2015282595-A1 · Oct 8, 2015 · US
Multilayer sheet, integrated sheet using same, and manufacturing method therefor
US10786603B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10786603-B2 |
| Application number | US-201515300343-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 31, 2015 |
| Priority date | Mar 31, 2014 |
| Publication date | Sep 29, 2020 |
| Grant date | Sep 29, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
A multilayer sheet can be used in vivo or in an environment in which moisture is adhered, an integrated sheet including the multilayer sheet and a base material, and methods for producing the same. The multilayer sheet has one or more layers from each of a layer (A) composed of sparingly water-soluble polymer and a fiber layer (B) composed of water-soluble polymer are laminated, and at least one of outermost layers is the above-described layer (A) composed of sparingly water-soluble polymer. The time taken from dropping of water onto a surface of the outermost layer of the above-described layer (A) composed of sparingly water-soluble polymer to dissolution of the other outermost layer is 10 seconds to 5 minutes.
First claim
Opening claim text (preview).
The invention claimed is: 1. An integrated sheet comprising: a multilayer sheet comprising: one or more layers from each of a non-fibrous layer (A) composed of a first sparingly water-soluble polymer having a thin-film structure having a defect or having an uneven thickness, and a fiber layer (B) composed of water-soluble polymer are laminated, and at least one of outermost layers is the layer (A) composed of the first sparingly water-soluble polymer, wherein time taken from dropping of 0.04 mL water onto a surface of the layer (A) forming the outermost layer of the multilayer sheet composed of the first sparingly water-soluble polymer to dissolution of the other outermost layer of the multilayer sheet is 10 seconds to 5 minutes; and a base material (C) composed of a second sparingly water-soluble polymer are integrally laminated, wherein the non-fibrous layer (A) composed of the first sparingly water-soluble polymer forms one outermost layer of the integrated sheet, and the base material (C) composed of the second sparingly water-soluble polymer forms the other outermost layer of the integrated sheet, the base material (C) is composed of polylactic acid, and the compound forming the non-fibrous layer (A) composed of the first sparingly water-soluble polymer is a saponified polyvinyl alcohol having a degree of saponification of 92.5 to 100 mol %. 2. The integrated sheet according to claim 1 , wherein a basis weight of the non-fibrous layer (A) composed of the first sparingly water-soluble polymer is 1 to 200 g/m 2 . 3. The integrated sheet according to claim 1 , wherein the multilayer sheet has a tensile strength of 0.1 to 5.0 N/mm. 4. The integrated sheet according to claim 1 , wherein the non-fibrous layer (A) composed of the first sparingly water-soluble polymer is formed by collecting a fiber obtained by spinning a solution of the compound forming the layer using an electrospinning method, onto the fiber layer (B) composed of water-soluble polymer, and the spinning is performed by setting a distance between a nozzle tip that discharges the solution and a collection electrode of 3 to 10 cm.
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Classifications
Water-soluble, water-dispersible · CPC title
comprising polyesters · CPC title
Coatings comprising two or more layers · CPC title
Mixtures of macromolecular compounds · CPC title
Weight, e.g. weight per square meter · CPC title
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Frequently asked questions
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- What does patent US10786603B2 cover?
- A multilayer sheet can be used in vivo or in an environment in which moisture is adhered, an integrated sheet including the multilayer sheet and a base material, and methods for producing the same. The multilayer sheet has one or more layers from each of a layer (A) composed of sparingly water-soluble polymer and a fiber layer (B) composed of water-soluble polymer are laminated, and at least on…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification A61L31/14. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Sep 29 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).