公开(公告)号：US20220196208A1

公开(公告)日：2022-06-23

申请号：US17603976

申请日：2020-04-28

Applicant: Covess N.V.

Inventor： Tony Vanswijgenhoven

IPC: F17C1/16 ,  B29C53/60

Abstract: The invention relates to a method for the manufacture of a leak-tight vessel comprising a cylindrical mantle and two dome-shaped ends for the storage of a gas and/or a liquid. The method comprises providing an inner barrier layer comprising a heat-sealable thermoplastic material and an outer shell layer comprising a fiber-reinforced heat-sealable thermoplastic material, as well as an end-fitting. Further, the method comprises providing an inner layer by winding a heat-sealable thermoplastic filament material and forming an outer layer in two steps: first providing around the mantle of the vessel a fabric of a fiber-reinforced heat-sealable material, whereby the width of the fabric diminishes with successive windings of the fabric around the mantle, followed by winding a fiber-reinforced heat-sealable plastic film over the fabric around the mantle and the dome-shaped endings.

公开(公告)号：US11299312B2

公开(公告)日：2022-04-12

申请号：US16408570

申请日：2019-05-10

Applicant: Covess N.V.

Inventor： Tony Vanswijgenhoven ,  Dieter Vanswijgenhoven ,  Axel Seifert

IPC: B65D3/00 ,  B29C53/60 ,  F17C1/02 ,  B29C53/58 ,  B29C70/08 ,  B29C53/82 ,  B29C70/86 ,  B29K101/12 ,  B29K105/24 ,  B29L31/00

Abstract: The present invention describes a method for producing a leak-tight vessel for holding a gas and/or liquid, comprising the steps of winding a heat-sealable thermoplastic barrier strip around a removable mandrel in such a way that each strip fragment overlaps with a substantially parallel strip fragment over at least a lateral overlapping distance, consolidating the overlapping strip fragments so as to form a gas and/or liquid tight layer, winding a fibrous material around the gas and/or liquid tight layer, thereby leaving an opening large enough for removing the mandrel. The invention also describes a leak-tight vessel produced in this way.