CONTAINER HAVING AN UNFOLDED CONTAINER LAYER, CONTAINING A PLURALITY OF PARTICLES, AND HAVING A POLYMER LAYER
The invention relates to a container comprising a container wall that partly surrounds a container interior, wherein the container wall a) has a container opening; b) comprises a container layer comprising i) a multitude of particles, and ii) no fold and no crease; and c) comprises a first polymer layer that at least partly superimposes the container layer; wherein the container interior a. has a maximum diameter in a plane perpendicular to a height of the container interior, and b. has a diameter less than the maximum diameter of the container interior at least in sections in the direction from the plane to the container opening. The invention further relates to a method of superimposing a container precursor with a polymer composition; a container obtainable by that method; an apparatus for superimposing a container precursor with a polymer composition; a method of filling and closing one of the aforementioned containers and the closed container obtainable thereby; and uses of a filling machine, of one of the aforementioned containers, of a polymer composition, and of a powder coating system.
1 . A container comprising a container wall that partly surrounds a container interior, wherein the container wall
a) has a container opening;
b) comprises a container layer comprising
i) a multitude of particles, and
ii) no fold and no crease;
and
c) comprises a first polymer layer that at least partly superimposes the container layer;
wherein the container interior
a. has a maximum diameter in a plane perpendicular to a height of the container interior, and
b. has a diameter less than the maximum diameter of the container interior at least in sections in the direction from the plane to the container opening.
2 . The container as claimed in claim 1 , wherein the particles of the multitude of particles are fibers.
3 . The container as claimed in claim 2 , wherein the fibers comprise a chemical pulp or a mechanical pulp or both.
4 . The container as claimed in claim 1 , wherein the container layer comprises solids in a proportion within a range from 50% to 99.9% by weight, based on the weight of the container layer.
5 . The container as claimed in claim 1 , wherein the first polymer layer at least partly superimposes the container layer on a side remote from the container interior.
6 . The container as claimed in claim 1 , wherein the first polymer layer at least partly superimposes the container layer on a side facing the container interior.
7 . A method comprising, as method steps,
a) providing a container precursor comprising a container precursor wall partly surrounding a container precursor interior, wherein the container precursor wall
I. has a container precursor opening, and
II. comprises a container layer comprising a multitude of particles,
wherein the container precursor interior
i. has a maximum diameter in a plane perpendicular to a height of the container precursor interior, and
ii. has a diameter less than the maximum diameter of the container precursor interior at least in sections in the direction from the plane to the container precursor opening; and
b) at least partly superimposing the container layer with a first polymer composition.
8 . The method as claimed in claim 7 , wherein the container layer does not comprise any fold or any crease.
9 . The method as claimed in claim 7 , wherein the container precursor is provided in process step a) with a minimal first moisture content of the container layer,
wherein the container layer in method step b) has a further moisture content,
wherein the minimal first moisture content differs from the further moisture content by not more than 10% by weight, wherein each of the moisture contents are based on the weight of the container layer.
10 . The method as claimed in claim 7 , wherein the providing of the container precursor in method step a) comprises producing the container layer from a composition,
wherein the composition comprises
a. the multitude of particles, and
b. a liquid.
11 . The method as claimed in claim 7 , wherein the container layer in method step b) is superimposed with the first polymer composition at least on a side facing the container precursor interior.
12 . The method as claimed in claim 7 , wherein the container layer in method step b) is superimposed with the first polymer composition at least on a side remote from the container precursor interior.
13 . The method as claimed in claim 7 , wherein the first polymer composition comprises a first multitude of polymer particles.
14 . The method as claimed in claim 7 , wherein the container layer in method step b) has a moisture content within a range from 0% to 20% by weight, based on the weight of the container layer.
15 . The method as claimed in claim 7 , wherein the first polymer composition in method step b) has been electrically charged with respect to the container precursor wall.