# US 12,214,538 B2 · Blow molded containers and methods of making the same

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- Number: US 12,214,538 B2
- Document ID: US12214538B2
- Status: Granted
- Kind: B2
- Application number: 15/733,780
- Filed: 2019-04-24
- Published: 2021-08-12
- Granted: 2025-02-04
- Earliest claimed: 2018-04-24
- Assignees: CSP Technologies, Inc.
- Applicants: Csp Technologies, Inc.
- Inventors: Kasey Myers; Jonathan R. Freedman
- Web page: https://patentgrep.com/patent/US12214538B2

## CPC

- B01D 53/04: with stationary adsorbents {(B01D53/025 takes precedence)}
- B29C 49/0005: {characterised by the material}
- B29C 49/22: using multilayered preforms or parisons
- B32B 1/00: Layered products having a non-planar shape
- B65D 81/266: {for absorbing gases, e.g. oxygen absorbers or desiccants (B65D51/244, B65D51/30 take precedence)}
- C08K 5/06: Ethers; Acetals; Ketals; Ortho-esters
- C08L 23/06: Polyethylene
- B01D 2253/108: Zeolites
- B01D 2253/116: Molecular sieves other than zeolites
- B01D 2257/80: Water
- B29L 2031/7158: {Bottles}
- C08L 2207/066: LDPE (radical process)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- 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)
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A container, e.g., bottle, is formed by a blow molding process. The container includes a base and a sidewall extending from the base. The base and the sidewall define an interior configured to house at least one product. At least one of the sidewall and the base has a barrier layer and a desiccant layer attached to the barrier layer. The barrier layer and the desiccant layer are each blow molded together. The barrier layer is located external relative to the desiccant layer and is made of a plastic material. The desiccant layer is made of a monolithic composition comprising a mixture of a base polymer, a desiccant, and a channeling agent.

## Claims

### Claim 1

A method of manufacturing a bottle, the bottle comprising a base, a sidewall extending from the base, and a neck extending from the sidewall, the neck leading to a dispensing opening, the base and the sidewall defining an interior configured to house at least one product, the neck having a first cross sectional area and the sidewall having a second cross sectional area, the first cross sectional area being smaller than the second cross sectional area, the method comprising the steps of:
providing a stock component comprising a coextruded composite having a barrier layer and a desiccant layer;
inserting an apparatus into an opening in the stock component; and
passing air into the opening of the stock component in order to form the bottle from the stock component, wherein the sidewall, the neck and the base include the barrier layer and the desiccant layer coextruded with and thereby attached to the barrier layer, the barrier layer and the desiccant layer each being blow molded together and contiguous with each other along the sidewall, the neck and the base, the barrier layer being disposed external relative to the desiccant layer and being made of a plastic material, the desiccant layer being made of a monolithic composition comprising a mixture of a base polymer, a desiccant comprising 35% to 70% by weight with respect to the total weight of the monolithic composition, and a polymeric channeling agent having a water vapor transmission rate greater than the base polymer chosen from polyglycol, ethylene-vinyl alcohol (EVOH), polyvinyl alcohol (PVOH), glycerin polyamine, polyurethane, polycarboxylic acid, propylene oxide polymerisate-monobutyl ether, propylene oxide polymerisate, ethylene vinyl acetate (EVA), nylon 6, nylon 66, or any combination of the foregoing, the monolithic composition comprising interconnecting channels formed of the channeling agent.

### Claim 2 (depends on 1)

The method of claim 1, wherein each of the barrier layer and the desiccant layer has a thickness of from 20 to 40 mils.

### Claim 3 (depends on 1)

The method of claim 1, wherein the desiccant layer comprises molecular sieve.

### Claim 4 (depends on 1)

The method of claim 1, wherein the polymeric channeling agent is ethylene vinyl acetate (EVA).

### Claim 5 (depends on 1)

The method of claim 1, wherein the desiccant layer comprises channeling agent in an amount of 2% to 15% by weight with respect to total weight of the monolithic composition.

### Claim 6 (depends on 1)

The method of claim 1, wherein each of the barrier layer and the desiccant layer has a thickness of from 20 to 40 mils and the desiccant layer comprises molecular sieve as the desiccant.

### Claim 7 (depends on 1)

The method of claim 1, wherein the bottle has a total wall thickness of from 10 to 80 mils.