Standable bag made from flexible film material

Claim 2

A bag-like container, made from a single piece of flexible film, comprising two lateral surfaces, an inwardly domed bottom adjacent the lower ends of said surfaces, and only two sealed seams between only two layers of film laterally limiting the bag and extending over the entire bag length.

Claim 3

A bag-like container, made from a single piece of flexible film, comprising two lateral surfaces, an inwardly domed bottom adjacent the lower ends of said surfaces, and only two sealed seams between only two layers of film laterally limiting the bag and extending over the entire bag length.

Claim 4

A bag-like container, made from a single piece of flexible film, comprising two lateral surfaces, an inwardly domed bottom adjacent the lower ends of said surfaces, and only two sealed seams between only two layers of film laterally limiting the bag and extending over the entire bag length.

Claim 5

A container according to claim 1 in which the bottom dome is symmetrical.

Claim 6

A container accordinG to claim 1 in which the shortest distance of the inside edge of each lateral sealed seam of the bag from the upper surface of the bottom dome corresponds at least to the width of the sealed seam.

Claim 7

A container according to claim 1 fabricated from polyvinyl chloride film.

Claim 8

A container according to claim 1 fabricated from a film laminate.

Claim 9

A container according to claim 5 in which the laminate is of polyamide film and polyethylene.

Claim 10

A container according to claim 5 in which the laminate is of aluminum foil and polyethylene.

Claim 11

A process for the production of a bag-like container which comprises: forming a dome in a planar sheet of flexible film having at least one heat-sealable surface in a manner such that the point of intersection of the axes of symmetry of the dome base, which are perpendicular to one another, coincides with the point of intersection of the axes of symmetry of the sheet, which are perpendicular to one another, and the contents-contacting surface of the dome is heat-sealable, bending the sheet about the axis of symmetry thereof until the lateral parts of the sheet are superposed, the edge zones thereof are flush with one another, and the contents-contacting surfaces of the lateral parts of the sheet face one another and the contents-contacting surface of the dome, and bonding only the lateral parts of the sheet in the lateral edge zones thereof to form a firm seam-like bond of only two layers of film so that there is no connection between the contents-contacting surface of the bottom and the inside edges of the zones of the film bond.

Claim 12

A process for the production of a bag-like container which comprises: forming a dome in a planar sheet of flexible film having at least one heat-sealable surface in a manner such that the point of intersection of the axes of symmetry of the dome base, which are perpendicular to one another, coincides with the point of intersection of the axes of symmetry of the sheet, which are perpendicular to one another, and the contents-contacting surface of the dome is heat-sealable, bending the sheet about the axis of symmetry thereof until the lateral parts of the sheet are superposed, the edge zones thereof are flush with one another, and the contents-contacting surfaces of the lateral parts of the sheet face one another and the contents-contacting surface of the dome, and bonding only the lateral parts of the sheet in the lateral edge zones thereof to form a firm seam-like bond of only two layers of film so that there is no connection between the contents-contacting surface of the bottom and the inside edges of the zones of the film bond.

Claim 13

A process according to claim 8 in which the dome base has the shape of a scalene rectangle with rounded-off corners, the longer lateral edge of the dome base is parallel to the shorter lateral edge of the sheet, the sheet is bent about the shorter axis of symmetry thereof, and the lateral parts of the sheet are united with one another in the zone of the lateral edges thereof.

Claim 14

A process according to claim 8 in which the dome has an elliptical base.

Claim 15

A process according to claim 8 in which the dome is formed by thermoforming the sheet.

Claim 16

A process according to claim 8 in which the bond of two layers of film is formed by sealing the lateral zones of the superposed lateral parts of the sheet.

Claim 17

A process according to claim 8 in which the sheet is a film of polyvinyl chloride.

Claim 18

A process according to claim 8 in which the sheet is a laminate of polyamide film and polyethylene.

Claim 19

A process according to claim 8 in which the sheet has a thickness in the range of 50 to 500 Mu .

Claim 20

A process according to claim 8 in which the sheet has a thickness in the range of 100 to 200 Mu .