# US 2026/0216997 A1 · Breathable articles

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- Number: US 2026/0216997 A1
- Document ID: US20260216997A1
- Status: Published application
- Kind: A1
- Application number: 19/041,264
- Filed: 2025-01-30
- Published: 2026-07-30
- Earliest claimed: 2025-01-30
- Assignees: Dow Global Technologies LLC
- Applicants: Dow Global Technologies LLC
- Inventors: Albert Carbonell Blanch; Georgia Natacha Eftalie Bitinis; Rajen M. Patel
- Web page: https://patentgrep.com/patent/US20260216997A1

## CPC

- B32B 7/02: Physical, chemical or physicochemical properties
- B32B 9/045: {of synthetic resin}
- B32B 7/027: Thermal properties
- B32B 27/08: of synthetic resin
- B32B 27/205: {the fillers creating voids or cavities, e.g. by stretching}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 2250/02: 2 layers
- B32B 2250/05: 5 or more layers
- B32B 2250/242: All polymers belonging to those covered by group B32B27/32
- B32B 2264/104: Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
- B32B 2270/00: Resin or rubber layer containing a blend of at least two different polymers
- B32B 2305/026: Porous
- B32B 2307/30: having particular thermal properties
- B32B 2307/514: Oriented
- B32B 2307/72: Density
- B32B 2307/724: Permeability to gases, adsorption
- B32B 2311/00: Metals, their alloys or their compounds
- B32B 2323/046: LDPE, i.e. low density polyethylene
- B32B 2323/10: Polypropylene
- C08K 2003/265: {Calcium, strontium or barium carbonate}
- C08L 2207/066: LDPE (radical process)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

Embodiments of the present disclosure are directed towards breathable articles including a porous layer including calcium carbonate and a breathable layer material, wherein the breathable layer material has a density greater than 0.915 g/cm3 and melt index (I2) from 0.5 to 5 dg/min; and a non-porous layer including a non-porous layer material, wherein the non-porous layer material has a density less than 0.910 g/cm3 and melt index (I2) from 0.5 to 5 dg/min.

## Claims

### Claim 1

A breathable article comprising:
a porous layer comprising calcium carbonate and a breathable layer material, wherein the breathable layer material has a density greater than 0.915 g/cm3 and melt index (I2) from 0.5 to 5 dg/min; and
a non-porous layer comprising a non-porous layer material, wherein the non-porous layer material has a density less than 0.910 g/cm3 and melt index (I2) from 0.5 to 5 dg/min

### Claim 2 (depends on 1)

The breathable article of claim 1, wherein the breathable layer material density is from 0.916 g/cm3 to 0.940 g/cm3 and the non-porous layer material density is from 0.850 g/cm3 to 0.909 g/cm3.

### Claim 3 (depends on 1)

The breathable article of claim 1, wherein the breathable article comprises a plurality of porous layers.

### Claim 4 (depends on 3)

The breathable article of claim 3, wherein calcium carbonate is from 40 to 60 wt % in each of the plurality of porous layers.

### Claim 5 (depends on 1, 2, 3, 4)

The breathable article of any one of claims 1-4, wherein the breathable article has a Water Vapor Transmission Rate greater than or equal to 400 g/m2 day.

### Claim 6 (depends on 1, 2, 3, 4, 5)

The breathable article of any one of claims 1-5, wherein the breathable layer material comprises linear low-density polyethylene.

### Claim 7 (depends on 1, 2, 3, 4, 5, 6)

The breathable article of any one of claims 1-6, wherein the non-porous layer material comprises an ethylene-based polymer.

### Claim 8 (depends on 1, 2, 3, 4, 5, 6)

The breathable article of any one of claims 1-6, wherein the non-porous layer material comprises a propylene-based polymer.

### Claim 9 (depends on 1, 2, 3, 4, 5, 6, 7, 8)

The breathable article of any one of claims 1-8, wherein the breathable article includes 3 to 11 layers, and the 3 to 11 layers is a sum of a number of porous layers and a number of non-porous layers.

### Claim 10 (depends on 9)

The breathable article of claim 9, wherein each of the number of porous layers has a first same composition and each of the number of non-porous layers has a second same composition, where the first same composition is different than the second same composition.