Fibre based packaging container, circular base component, quadrilateral wall blank, method of manufacture of a fibre based packaging container and container obtainable from said method

A method of manufacture of a fibre based packaging container, wherein the method comprises the steps of:

• a. providing a quadrilateral blank comprising an inner wall surface and an outer wall surface opposing the inner wall surface, the inner wall surface comprising a liquid impermeable layer, the quadrilateral blank further comprising a first edge and second edge opposing the first edge, wherein the first and second edges are linear, and a third edge and a fourth edge opposing the third edge, each of the third and fourth edges defining an arc, wherein a first edge sealing portion extends partially across the inner wall surface from the first edge and a second edge sealing portion extends partially across the outer wall surface from the second edge;
• and wherein a base sealing portion extends partially across the inner wall surface from the third edge;
• b. providing a circular base component comprising an outer edge, an inner base surface and an outer base surface opposing the inner base surface, the inner base surface comprising a liquid impermeable layer and a circumferential region extending from the outer edge comprising a sealable lacquer coating, and a wall sealing portion located within the circumferential region on the inner base surface;
• c. flexing the quadrilateral blank to bring the first and second edges into overlapped engagement with one another, and sealing them to one another to form a tubular wall component with a wall seam;
• d. folding the circular base component at a fold line extending within the circumferential region around the whole of the circular base component to create a circumferentially folded edge comprising the wall sealing portion extending at 80 to 100 degrees from the rest of the circular base component;
• and
• e. sealing the wall sealing portion and the base sealing portion to one another to create a base seam between the tubular wall component and the circular base component, wherein the sealable lacquer coating is present within the base seam.