Hollow body having a wall with a layer of glass and a plurality of particles

1. A hollow body, comprising:

a wall which at least partially surrounds an interior volume of the hollow body, the wall comprising a layer of glass and having a wall surface with a surface region; and

a plurality of particles at least partially superimposing the layer of glass in the surface region of the wall surface, the plurality of particles being characterized by a particle size distribution having a D 50 in a range from 1 μm to 100 μm, wherein the plurality of particles is not embedded in any material and the surface region is characterized by a coefficient of dry sliding friction of less than 0.15.

2. The hollow body of claim 1 , wherein the particles of the plurality of particles are selected from the group consisting of organic particles, inorganic particles, hybrid polymer particles, or a combination of at least two thereof.

3. The hollow body of claim 2 , wherein the particles comprise inorganic particles and the inorganic particles are selected from the group consisting of a boron nitride, a molybdenum sulfide, a silicon nitride, an oxide, a compound which includes covalently bonded H, or a combination of at least two thereof.

4. The hollow body of claim 1 , wherein the particles of the plurality of particles comprise a compound which includes covalently bonded H.

5. The hollow body of claim 1 , wherein the particles of the plurality of particles adjoin the layer of glass in the surface region of the wall surface.

6. The hollow body of claim 1 , wherein the particles of the plurality of particles are not superimposed by any component of the wall surface on a side of the particles of the plurality of particles which faces away from the layer of glass.

7. The hollow body of claim 1 , wherein the particles of the plurality of particles are characterized by an aspect ratio in a range from 0.5 to 1.5.

8. A hollow body, comprising:

a wall which at least partially surrounds an interior volume of the hollow body, the wall comprising a layer of glass and having a wall surface, the wall surface comprising a surface region which is characterized by a coefficient of dry sliding friction of less than 0.15; and

a plurality of particles at least partially superimposing the layer of glass in the surface region of the wall surface that is characterized by a particle size distribution having a D 50 in a range from 1 μm to 100 μm.

9. The hollow body of claim 8 , wherein the surface region is further characterized by a contact angle for wetting with water in a range from 0° to 45°.

10. The hollow body of claim 8 , wherein the hollow body is a container.

11. The hollow body of claim 10 , wherein the container is a packaging container for at least one of a medical packaging good or a pharmaceutical packaging good.

12. A process for making an item, the process comprising as process steps:

a) providing a hollow body comprising a wall which at least partially surrounds an interior volume of the hollow body, the wall comprising a layer of glass and having a wall surface;

b) superimposing at least a part of the layer of glass with a composition comprising a first plurality of particles and a vehicle; and

c) decreasing a proportion of the vehicle in the composition, thereby leaving at least a part of the first plurality of particles or a further plurality of particles, which is obtained in the process step c) from at least a part of the first plurality of particles, or a combination of the first plurality of particles and the further plurality of particles superimposed on the layer of glass in a surface region of the wall surface, the superimposed plurality of particles on the surface region being characterized by a particle size distribution having a D 50 in a range from 1 to 100 μm, wherein the surface region is characterized by a coefficient of dry sliding friction of less than 0.15.

13. The process of claim 12 , wherein in the process step b) the composition comprises the first plurality of particles at a proportion in a range from 0.1 wt.-% to 25 wt.-%, based on the weight of the composition in the process step b).

14. The process of claim 12 , wherein in the process step b) the layer of glass is contacted with the composition.

15. A closed container, comprising:

a wall at least partially surrounding an interior volume which comprises a pharmaceutical composition, the wall comprising a layer of glass and having a wall surface comprising a surface region, the closed container meeting both of the following criteria:

A. the layer of glass is at least partially superimposed by a plurality of particles in the surface region, the plurality of particles being characterized by a particle size distribution having a D 50 in a range from 1 to 100 μm; and

B. the surface region is characterized by a coefficient of dry sliding friction of less than 0.15.

16. A process, comprising as process steps:

providing a hollow body comprising a wall which at least partially surrounds an interior volume of the hollow body, the wall comprising a layer of glass and having a wall surface with a surface region, and a plurality of particles at least partially superimposing the layer of glass in the surface region of the wall, the plurality of particles being characterized by a particle size distribution having a D 50 in a range from 1 μm to 100 μm, wherein the surface region is characterized by a coefficient of dry sliding friction of less than 0.15;

inserting a pharmaceutical composition into the interior volume; and

closing the hollow body.

17. A process, comprising:

using a plurality of particles to adjust a coefficient of dry sliding friction of a surface of glass of a container to be less than 0.15, the plurality of particles being characterized by a particle size distribution having a D 50 in a range from 1 μm to 100 μm.