# US 12,214,574 B2 · Barrier film substrate, method of making same, and use thereof

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- Number: US 12,214,574 B2
- Document ID: US12214574B2
- Status: Granted
- Kind: B2
- Application number: 17/091,421
- Filed: 2020-11-06
- Published: 2021-02-25
- Granted: 2025-02-04
- Earliest claimed: 2017-08-14
- Assignees: Engineered Materials, Inc.
- Applicants: Engineered Materials, Inc.
- Inventors: Keith W. Donaldson; Marshall Grove; Joe Marks
- Web page: https://patentgrep.com/patent/US12214574B2

## CPC

- B32B 27/18: characterised by the use of special additives
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/08: of synthetic resin
- B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/34: comprising polyamides
- B32B 27/36: comprising polyesters
- B32B 37/12: characterised by using adhesives
- B32B 2250/24: All layers being polymeric
- B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2255/205: Metallic coating
- B32B 2264/105: Metal
- B32B 2307/7242: Non-permeable
- B32B 2307/758: Odour absorbent
- B32B 2323/043: HDPE, i.e. high density polyethylene
- B32B 2419/00: Buildings or parts thereof
- B32B 2607/00: Walls, panels
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

A barrier film substrate includes a first layer including a polymer and a transition metal having chemical sequestering properties such that, upon exposure of the barrier film substrate to one or more chemical vapors, a reaction occurs between the transition metal and the one or more chemical vapors. A second layer is aligned with the first layer. The second layer includes a polymer having impeding properties such that, upon the exposure of the barrier film substrate to the one or more of the chemical vapors, the second layer substantially blocks passage of the one or more of the chemical vapors through the barrier film substrate. One or more additional layers is aligned with at least one of the first layer or the second layer to provide structural support for the first layer and the second layer.

## Claims

### Claim 1

A building assembly, comprising:
a building defining a building envelope; and
a barrier film substrate coupled to the building envelope such that the barrier film substrate is positioned within or around the building envelope, wherein the barrier film substrate includes:
a first layer including a polymer and a transition metal having chemical sequestering properties, the transition metal including copper, wherein the amount of copper in the first layer is in the range of between about 5% and about 23% by mass, based on the total mass of the first layer; and
a second layer aligned with the first layer, the second layer including a polymer having impeding properties greater than polyethylene for at least one chemical vapor;
whereby upon exposure to one or more chemical vapors, a reaction occurs with the copper of the first layer causing the one or more chemical vapors to break down into a plurality of chemical sub-components, the polymer of the second layer impeding the progress of the one or more chemical vapors through the second layer, extending the reaction time between the copper of the first layer and the one or more chemical vapors.

### Claim 2 (depends on 1)

The building assembly of claim 1, wherein the first layer can filter one or more of the plurality of chemical sub-components.

### Claim 3 (depends on 1)

The building assembly of claim 1, further comprising one or more additional layers aligned with and adjacent to one or more of the first layer and the second layer to provide structural support for the first layer and the second layer.

### Claim 4 (depends on 2)

The building assembly of claim 2, wherein the one or more additional layers includes a third layer including a low density polyethylene (“LLDPE”), a high density polyethylene (“HDPE”), or a low density polyethylene (“LDPE”).

### Claim 5 (depends on 4)

The building assembly of claim 4, wherein the one or more additional layers includes a fourth layer including LLDPE, HDPE, or LDPE.

### Claim 6 (depends on 1)

The building assembly of claim 1, wherein the first layer and the second layer are oriented such that the first layer is closest to the one or more chemical vapors.

### Claim 7 (depends on 1)

The building assembly of claim 1, wherein the polymer of the second layer is ethylene vinyl alcohol (“EVOH”).

### Claim 8 (depends on 1)

The building assembly of claim 1, wherein the polymer of the second layer is nylon.

### Claim 9 (depends on 1)

The building assembly of claim 1, wherein the polymer of the second layer is polyester.

### Claim 10 (depends on 1)

The building assembly of claim 1, wherein the first layer and the second layer are formed as a blown film.

### Claim 11 (depends on 1)

The building assembly of claim 1, wherein the first layer and the second layer are formed via a cast process.

### Claim 12 (depends on 1)

The building assembly of claim 1, further comprising a bonding layer disposed between the first layer and the second layer.

### Claim 13 (depends on 1)

The building assembly of claim 1, further comprising an adhesive layer disposed between the first layer and the second layer.