Reinforced microcapillary films and foams

Patent metadata

Field	Value
Publication number	US-9493337-B2
Application number	US-201213991442-A
Country	US
Kind code	B2
Filing date	Jan 3, 2012
Priority date	Jan 3, 2011
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

The instant invention provides reinforced microcapillary films and/or foams. The inventive reinforced film and/or foam have a first end and a second end, wherein the film and/or foam comprises: (a) a matrix comprising a first thermoplastic material, (b) at least one or more channels disposed in parallel in said matrix from the first end to the second end of the film or foam, wherein said one or more channels are at least 1 μm apart from each other, and wherein each said one or more channels have a diameter in the range of at least 1 μm; and (c) a second thermoplastic material disposed in said one or more channels, wherein said second thermoplastic material is different than the first thermoplastic material; wherein said film has a thickness in the range of from 2 μm to 2000 μm.

First claim

We claim:

1. A reinforced foam having a first end and a second end, wherein said foam comprises:
(a) a matrix comprising a first closed cell foam comprising a first thermoplastic material,
(b) at least one or more channels disposed in parallel in said matrix from the first end to the second end of said foam, wherein said one or more channels are at least 1 μm apart from each other, wherein said one or more channels have a cross sectional shape selected from the group consisting of circular, rectangular, star, diamond, triangular, square, and combinations thereof, and wherein each said one or more channels have a diameter in the range of from 2 μm to 1998 μm; and
(c) a second closed cell foam disposed in said one or more channels, wherein said second closed cell foam comprises a second thermoplastic material that is different than the first thermoplastic material;
wherein said reinforced foam has a thickness such that the reinforced foam thickness to channel diameter ratio is in the range of from 2:1 to 400:1.

2. The reinforced foam of claim 1 , wherein said first thermoplastic material is selected from the group consisting of polyolefin; polyamide; polyvinylidene chloride; polyvinylidene fluoride; polycarbonate; polystyrene; polyethylene vinylalcohol (PVOH), polyvinyl chloride, polylactic acid (PLA) and polyethylene terephthalate.

3. The reinforced foam of claim 2 , wherein said polyolefin is polyethylene or polypropylene.

4. The reinforced foam of claim 2 , wherein said polyamide is nylon 6.

5. The reinforced foam of claim 1 , where said second thermoplastic material is selected from the group consisting of polyolefin; polyamide; polyvinylidene chloride; polyvinylidene fluoride; polycarbonate; polystyrene; polyethylene vinyl alcohol (PVOH), polyvinyl chloride, polylactic acid (PLA) and polyethylene terephthalate.

6. A multilayer structure comprising the reinforced foam of claim 1 .

7. An article comprising the reinforced foam of claim 1 .

Assignees

• Zalamea Luis G
• Bongartz Herbert
• Koopmans Rudolf J
• Dow Global Technologies Llc

Inventors

• Zalamea Luis G
• Bongartz Herbert
• Koopmans Rudolf J

Classifications

• Y10T428/24744

  Longitudinal or transverse tubular cavity or cell · CPC title

• C08J2367/04

  Polyesters derived from hydroxy carboxylic acids, e.g. lactones (C08J2367/06 takes precedence) · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title

• C08L23/12

  Polypropene · CPC title

• C08L23/0815

  with aliphatic 1-olefins containing one carbon-to-carbon double bond · CPC title