Cranial cap dressing
US-2016374864-A1 · Dec 29, 2016 · US
Patterned silicone coating
US9433534B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9433534-B2 |
| Application number | US-201214111626-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 13, 2012 |
| Priority date | Apr 15, 2011 |
| Publication date | Sep 6, 2016 |
| Grant date | Sep 6, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
A method of applying a patterned coating of a silicone adhesive to a substrate sheet, comprising the steps of pattern coating a silicone precursor composition onto the substrate, followed by thermally curing the precursor composition coated on the substrate. The precursor composition is a viscous fluid, and the pattern coating is performed by suitably modified block printing, intaglio printing or screen printing methods. Also provided are coated substrates obtainable by the methods of the invention, and wound dressings comprising such coated substrates.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of applying a patterned coating of a silicone adhesive to a substrate sheet, comprising the steps of pattern coating a silicone precursor composition onto at least a portion of the substrate sheet, followed by thermally curing the precursor composition coated on the portion of the substrate sheet, wherein the step of pattern coating comprises the steps of coating the silicone precursor composition onto an apertured support layer to provide a coated apertured support layer, followed by applying the coated apertured support layer to the substrate sheet, followed by thermally curing the silicone precursor composition, followed by removing the coated apertured support layer to leave a patterned layer of the cured silicone composition on the substrate sheet, whereby the pattern of the cured silicone on the substrate sheet substantially corresponds to a pattern of coating on the apertured support layer. 2. A method according to claim 1 , wherein the pattern of coating is formed by a pattern of lands and holes in the support layer. 3. A method according to claim 1 , wherein said apertured support layer is a perforated sheet containing an array of perforations, said perforations having an area of at least about 4 mm 2 . 4. A method according to claim 1 , wherein the silicone precursor composition is substantially solvent-free. 5. A method according to claim 1 , wherein said pattern coating of silicone precursor composition is applied to cover from about 10% to about 50% of the surface area of the substrate sheet. 6. A method according to claim 1 , wherein said coating of silicone adhesive precursor composition is applied in a pattern having a minimum dimension of about 2 mm. 7. A method according to claim 1 , wherein said substrate sheet is a continuous semipermeable sheet having a moisture vapour transfer rate (MVTR) before coating of at least about 500 g/m 2 /24 hr. 8. A method according to claim 1 , wherein no primer layer is applied to said substrate sheet prior to said step of pattern coating with the silicone precursor composition. 9. A method according to claim 1 , wherein the support layer has a surface that substantially comprises a perfluorocarbon.
Assignees
Inventors
Classifications
After-treatment · CPC title
Pressure-sensitive adhesives [PSA] · CPC title
Removable films used as masks · CPC title
Polysiloxanes · CPC title
Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] · CPC title
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- What does patent US9433534B2 cover?
- A method of applying a patterned coating of a silicone adhesive to a substrate sheet, comprising the steps of pattern coating a silicone precursor composition onto the substrate, followed by thermally curing the precursor composition coated on the substrate. The precursor composition is a viscous fluid, and the pattern coating is performed by suitably modified block printing, intaglio printing …
- Who is the assignee on this patent?
- Addison Deborah, Stephens Sally, Amjad Risham, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification A61F13/025. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Sep 06 2016 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).