Flexible container made of a plastic material, method for manufacturing such a container and corresponding mould

A method for manufacturing a container, the method comprising:

• forming a tube by rolling and welding a plastic material sheet on itself;
• inserting the tube into a mould;
• closing the mould;
• blowing the tube into the mould to obtain a container, the container comprising:
• a body extending, according to a longitudinal axis, between a bottom and a neck made integrally in one-piece with the body,
• wherein the body has, along a height according to the longitudinal axis, a wall whose thickness is comprised between 0.05 mm and 0.4 mm, and the neck has, along the height according to the longitudinal axis, a wall whose thickness is comprised between 0.4 mm and 0.8 mm, and
• wherein the body defines a first facade and a second facade connected to one another by a connecting portion at each of their ends, the first facade having a weld of the rolled tube;
• wherein the tube has a diameter strictly larger than a diameter of the neck of the container to be obtained.