Patent ID: 11905101
Assignee: CELWISE AB
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  D | IPC B  D

Claim 0:
1. A method of making a disposable double walled structure comprising:
an inner wall portion surrounding a product space presenting a cross section and extending along an axial direction, perpendicular to the cross section, between first and second axially spaced apart portions, and
an outer wall portion at least partially surrounding the inner wall portion, wherein an insulating space is formed between the inner and outer wall portions,, the method comprising:
forming the inner and outer wall portions in one piece from a pulp material, such that the inner and outer wall portions are connected at the first axial portion and at least partially overlap as seen in a direction perpendicular to the axial direction, and
bending at least one of the inner and outer wall portions in the direction perpendicular to the axial direction towards the other one of the inner and outer wall portions at the second axial portion, so as to form the insulating space.