Barrier plastic articles

• US 3,916,048 A
• Filed: 05/21/1973
• Issued: 10/28/1975
• Est. Priority Date: 11/10/1972
• Status: Expired due to Term

• Current Assignee: Wilhelm E. Walles
• Original Assignee: Wilhelm E. Walles
• Inventors: Walles, Wilhelm E.
• Primary Examiner(s): Weiffenbach, Cameron K.
• Assistant Examiner(s): Varndell, Ralph E.
• Application Number:
  US05/362,561
• Time in Patent Office: 890 Days
• Field of Search: 117/71R,47A 220/DIG.14,64 215/1C,DIG.6
• US Class Current: 428/35.9
• CPC Class Codes: A47J 41/022 Constructional details of the elements forming vacuum space
• CPC Class Codes: B32B 1/00 Layered products having a non-planar shape
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 15/082 comprising vinyl resins; comprising acrylic resins
• CPC Class Codes: B32B 15/085 comprising polyolefins
• CPC Class Codes: B32B 15/088 comprising polyamides
• CPC Class Codes: B32B 15/09 comprising polyesters
• CPC Class Codes: B32B 15/098 comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
• CPC Class Codes: B32B 15/20 comprising aluminium or copper B32B15/016 and B32B15/017 take precedence
• CPC Class Codes: B32B 2311/04 Gold
• CPC Class Codes: B32B 2311/08 Silver
• CPC Class Codes: B32B 2311/12 Copper
• CPC Class Codes: B32B 2311/14 Lead
• CPC Class Codes: B32B 2311/16 Tin
• CPC Class Codes: B32B 2311/18 Titanium
• CPC Class Codes: B32B 2311/22 Nickel or cobalt
• CPC Class Codes: B32B 2311/24 Aluminium
• CPC Class Codes: B32B 2323/00 Polyalkenes
• CPC Class Codes: B32B 2361/00 Phenoplast, aminoplast
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 2369/00 : Polycarbonates
• CPC Class Codes: B32B 2371/00 : Polyethers, e.g. PEEK, i.e. polyether-etherketone; PEK, i.e. polyetherketone
• CPC Class Codes: B32B 2377/00 : Polyamides
• CPC Class Codes: B32B 2439/60 : Bottles
• CPC Class Codes: B32B 27/285 : comprising polyethers
• CPC Class Codes: B32B 27/306 : comprising vinyl acetate or vinyl alcohol (co)polymers
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/34 : comprising polyamides
• CPC Class Codes: B32B 27/36 : comprising polyesters
• CPC Class Codes: B32B 27/42 : comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
• CPC Class Codes: B65D 11/16 : with double walls
• CPC Class Codes: B65D 81/3846 : formed of different materials, e.g. laminated or foam filling between walls
• CPC Class Codes: C23C 18/1646 : Characteristics of the product obtained
• CPC Class Codes: C25D 5/56 : of plastics
• CPC Class Codes: E04B 1/80 : slab-shaped
• CPC Class Codes: F17C 2201/0109 : with exteriorly curved end-piece
• CPC Class Codes: F17C 2203/0391 : by vacuum
• CPC Class Codes: F17C 2203/0395 : Getter
• CPC Class Codes: F17C 2203/0607 : Coatings
• CPC Class Codes: F17C 2203/0629 : Two walls
• CPC Class Codes: F17C 2203/0636 : Metals
• CPC Class Codes: F17C 2203/066 : Plastics
• CPC Class Codes: F17C 2205/0311 : Closure means
• CPC Class Codes: F17C 3/08 : by vacuum spaces, e.g. Dewar flask for household use A47J41/02
• CPC Class Codes: Y10T 428/1359 : Three or more layers [continuous layer]
• CPC Class Codes: Y10T 428/31699 : Ester, halide or nitrile of addition polymer

Abstract

A plastic article is rendered essentially impermeable to atmospheric gases and other vapors by metallizing the wall structure of the plastic article with a metal to form a thin metal layer and overcoating the metal layer with a latex of an organic polymer, particularly a barrier polymer such as a vinylidene chloride polymer, to provide alayer of the organic polymer adherent to the metal layer.

Claims

1. A BARRIER PLASTIC CONTAINING COMPRISING A NORMALLY SOLID, ORGANIC PLASTIC SUBSTRATE WHICH HAS A WATER WETTEBLE SURFACE AND HAS DEPOSITED THEREON AND ADHERENT THERETO A METAL LAYER WHICH IS OVERCOATED WITH A LAYER OR ORGANIC COPOLYNER WHICH ADHERES TO THE METAL LAYER, SAID ORGANIC POLYMER HAVING BEEN APPLIED TO THE METAL LAYER IN THE FARM OF A LATEX CAPBLE OF FORMING A CONTINUOUS FILM AT TEMPERATURES BELOW THE HEAT DISTORTION POINT OF THE PLASTIC SUBSTRATE.

2. The container of claim 1 which is in the form of a bottle.

3. The container of claim 2 wherein the plastic substrate is a polymer selected from the group consisting of an Alpha -monoolefin having less than 12 cArbon atoms;

monovinylidene carbocyclic aromatic polymers;

polymers of alkyl ester of Alpha , Beta -ethylenically unsaturated carboxylic acids;

structural polymers of vinyl and vinylidene halides, acrylonitrile, acrylamide, methyl vinyl ether, vinyl acetate, and dienes;

polyformaldehyde resins;

polyesters;

polycarbonates;

polysulfones; and

polyamides.

4. The container of claim 3 wherein a metal is silver, lead, nickel, aluminum, copper, gold, titanium, tin, bismuth, antimony, chromium, or manganese including alloys thereof.

5. The container of claim 4 wherein the organic polymer for overcoating the metal layer is suitably a normally solid organic polymer which, in latex form, will form a continuous film at temperatures below the heat distortion point of the organic plastic substrate, said organic polymer is selected from the group consisting of Alpha -monoolefins having less than 12 carbon atoms;

monovinylidene aromatic carbocyclic monomers;

conjugated aliphatic dienes;

alkyl esters of Alpha , Beta -ethylenically unsaturated carboxylic acids;

unsaturated esters of carboxylic acids;

vinyl and vinylidene halides;

acrylonitrile;

methacrylonitrile;

acrylamide;

methyl vinyl ether; and

methyl benzyl ketone.

6. The container of claim 1 wherein the substrate has a thickness in the range from about 0.5 to about 300 mils, the methyl layer has a thickness in the range from about 0.0001 to about 0.1 mil and the layer of organic polymer has a thickness from about 0.001 to about 2.5 mils.

7. The container of claim 6 wherein the metal layer is applied to the substrate by an electroless metal deposition technique in which the water wettable surface of the plastic substrate is first coated with a dilute aqueous solution of a tin compound and subsequently metallized.

8. The container of claim 7 wherein the metal is silver.

9. The container of claim 8 wherein the organic polymer is a vinylidene chloride polymer.

10. The container of claim 8 wherein the organic polymer is a styrene/butadiene copolymer.