Plastic container for liquids or gases

• US 5,012,950 A
• Filed: 04/27/1989
• Issued: 05/07/1991
• Est. Priority Date: 04/30/1988
• Status: Expired due to Fees

• Current Assignee: Holger Knappe
• Original Assignee: Holger Knappe
• Inventors: Knappe, Holger
• Primary Examiner(s): Foster, Jimmy G.
• Application Number:
  US07/343,640
• Time in Patent Office: 740 Days
• Field of Search: 126/361, 126/373, 219/312, 220/1 B, 220/3, 220/83, 220/453-455, 220/459, 220/468, 220/565
• US Class Current: 220/567.3
• CPC Class Codes: B29C 45/00 Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor injection blow-moulding B29C49/06
• CPC Class Codes: B29C 49/00 Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
• CPC Class Codes: B29C 53/58 helically
• CPC Class Codes: B29C 65/0672 Spin welding
• CPC Class Codes: B29C 65/20 with direct contact, e.g. using "mirror"
• CPC Class Codes: B29C 70/086 and with one or more layers of pure plastics material, e.g. foam layers applying a non-preformed coating, e.g. a gel-coat, B29C37/0025; with foam blocks B29C70/86
• CPC Class Codes: B29K 2023/06 PE, i.e. polyethylene
• CPC Class Codes: B29K 2023/12 PP, i.e. polypropylene
• CPC Class Codes: B29K 2027/18 PTFE, i.e. polytetrafluorethene , e.g. ePTFE, i.e. expanded polytetrafluorethene
• CPC Class Codes: B29K 2071/12 PPO, i.e. polyphenylene oxide; PPE, i.e. polyphenylene ether
• CPC Class Codes: B29K 2101/12 Thermoplastic materials
• CPC Class Codes: B29K 2105/00 Condition, form or state of moulded material or of the material to be shaped
• CPC Class Codes: B29K 2105/08 of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
• CPC Class Codes: B29K 2309/08 Glass
• CPC Class Codes: B29L 2009/00 Layered products
• CPC Class Codes: B29L 2031/712 Containers; Packaging elements or accessories, Packages closures therefor B29L2031/56; ink or toner cartridges B29L2031/7678; squeeze tubes B29L2023/20; suitcases B29L2031/7418
• CPC Class Codes: B29L 2031/7156 Pressure vessels
• CPC Class Codes: B32B 1/00 Layered products having a non-planar shape
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2323/10 Polypropylene
• CPC Class Codes: B32B 2439/00 : Containers; Receptacles
• CPC Class Codes: B32B 27/08 : of synthetic resin
• CPC Class Codes: B32B 27/12 : next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: F17C 1/16 : constructed of plastics materials shaping of plastics B29C
• CPC Class Codes: F17C 2203/0604 : Liners
• CPC Class Codes: F17C 2203/0619 : with two layers
• CPC Class Codes: F17C 2203/0663 : in form of fibers or filaments
• CPC Class Codes: F17C 2203/0673 : Polymers
• CPC Class Codes: F17C 2209/2154 : Winding
• CPC Class Codes: F17C 2260/011 : Improving strength
• CPC Class Codes: F17C 2260/036 : Avoiding leaks
• CPC Class Codes: F17C 2270/0745 : Gas bottles

Abstract

The invention relates to plastic containers for liquids and gases, which are characterized in that they have a seamless inner layer of modified PPO or PP and a glass fiber layer following it, laid on geodesic lines and provided partly or completely with reaction resins or thermoplastics as well as an optional outer coating of hardenable reaction resins or thermoplastics. In regions of particular strain, the plastic containers may have, between the liner and the glass fiber layer comprising long fibers, an intermediate layer of thermoplastics or reaction resins not having containing monomeric styrene and with approximately 20 to 40% by weight of glass fibers in the form of short fibers.

Claims

1. A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins, wherein said reaction resins are at least one of polyester resins, or unsaturated polyester resins not containing monomeric styrene.

3. A plastic container of claims 1 or 2 further including a layer of cross-wound winding intermediate said inner seamless layer and said outer glass fiber layer.

4. A plastic container of claims 1 or 2 further including a layer of cross-wound winding covering said outer glass fiber layer.

2. A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide said inner layer wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said seamless inner layer and contain thermoplastics or hardenable reaction resins, wherein said hardenable reaction resins are at least one of polyester resins or unsaturated polyester resins.

5. A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins not containing monomeric styrene, and said seamless liner comprising at least one layer comprised of modified polyphenylene oxide or polypropylene, and at least one other thermoplastic.

7. A plastic container of claim 5 or 6 wherein said thermoplastic is at least one of polytetrafluoroethylene, polychlorotrifluoroethylene or polyimide.

6. A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, said liner wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said liner and contain thermoplastics are hardenable reaction resins, and said seamless liner comprising at least one layer comprised of modified polyphenylene oxide, or polypropylene, and at least one other thermoplastic.

8. A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating of thermoplastics or reaction resins and said reaction resins are at least one of polyester resins, or unsaturated polyester resins not containing monomeric styrene, and further including a layer, intermediate said liner and said outer glass fiber layer, of thermoplastics or reaction resins not containing monomeric styrene and containing approximately 20 to 40% by weight of short glass fibers.

9. A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide said inner layer wrapped with an outer layer of glass fibers wherein the outer layers of glass fibers are spaced apart from said seamless inner layer and contain thermoplastics or hardenable reaction resins, and further including a layer, intermediate said liner and said outer glass layer, of polyester resins or unsaturated polyester resins not containing monomeric styrene and containing approximately 20 to 40% by weight of short glass fibers.

10. A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, and an outer glass fiber layer wound on approximately geodesic lines on said liner, wherein said outer layer has a coating comprising polypropylene or modified polyphenylene oxide foam saturated glass fiber wherein said outer layer does not contain monomeric styrene.

11. A plastic container comprising a seamless liner, as an inner layer, of modified polyphenylene oxide or polypropylene, said inner layer wrapped with an outer layer of glass fibers wherein the outer layer of glass fibers are spaced apart from said seamless inner layer and contain polypropylene or modified polyphenylene oxide foam saturated glass fiber.