Plastic package coated with diamond-like carbon film, device for fabricating this package and method for package fabricating

FIELD: metallurgy.

SUBSTANCE: invention refers to plastic package with inside surface of wall coated with diamond-like film; invention also refers to device for fabricating this package and to method of package fabricating. The device contains an electrode encompassing the package and forming one portion of a chamber for pressure fall where the package and a facing electrode located inside the package above an aperture are arranged. The said electrodes face each other and are divided with an insulating body forming portion of the pressure fall chamber. A device for source gas supply contains an inlet pipe of supplied gas. There are also a pumping out device and a device of high frequency supply. The method includes pumping out the package contents till achieving the pressure less or equal to specified, then introduction of source gas for generating plasma, termination of pumping out and decreasing the rate of introduction of the source gas to the value less than the rate of introduction at the moment of change, generating plasma for formation of diamond-like carbon film on the interior surface of the plastic package wall. Thus the package with film is produced; the said film has equal level of oxygen impenetrability; and colouring of film formed at the throat portion of the package is avoided.

EFFECT: production of package with diamond-like carbon film with uniform level of oxygen impenetrability.

25 cl, 24 dwg, 7 tbl

 

The text descriptions are given in facsimile form.

1. The device for manufacturing a plastic container coated with diamond-like carbon film containing surrounding the container electrode, forming one part of the chamber to reduce the pressure in which is enclosed with a plastic container having a housing part, the hole, the cross-sectional area less than the cross-sectional area in the horizontal section of the hull, and hallowindow part located between the hole and Cabinet part, the front electrode facing to the surrounding container electrode and located inside the container over the hole and surrounding the container electrode and the front electrode facing each other and separated by an insulating body forming part of the chamber to reduce pressure, means for supplying source gas converted to plasma for coating the inner surface of the wall of the container diamond-like carbon film comprising an inlet tube, the source gas located in the chamber to reduce the pressure for the introduction of the source gas fed into the chamber to reduce the pressure inside the container, pumping means for pumping gas from the openings of the containers inside the camera reduce pressure, and means for supplying high frequency, connected to the surrounding container electrode, and surrounding the container, the electrode is made thus, h is the average diameter (R2) of the inner hole of the inner wall around Golovino part, when the container is enclosed within a surrounding container electrode, is less than the average diameter (R1) of the inner hole of the inner wall around the hull, and the average distance (d2) between the outer wall of the container and the inner wall surrounding the container of the electrode in a horizontal cross-section relative to the vertical direction of the container in Golovino part exceeds the average distance (d1) between the outer wall of the container and the inner wall surrounding the container of the electrode in a horizontal cross-section relative to the vertical direction of the containers in the hull.

2. The device according to claim 1, in which the average distance d2 is the distance, providing suppression of density plasma, an accompanying increase in pressure of the source gas converted to plasma, Golovino parts inside the container to obtain approximately the same density plasma inside the container.

3. The device according to claim 1, in which the average distance d2 is equal to or less than the distance at which the intensity of the ion impacts due to collisions of ions of the source gas converted to plasma with the inner wall of the container becomes such intensity ion shock, which causes the formation of diamond-like carbon film having a prescribed lower limit kislotonepronitsaemost, and the average distance d2 is equal to or greater than the distance is s, on which the entire surface of the wall of the container has approximately the same color due to the suppression of coloring a specific part of the packaging from Golovino part to the hole due to the damage of plasma or plasma etching the inner surface of the wall of the container by increasing the plasma density, the accompanying increase in pressure of the source gas converted to plasma in Golovino parts inside the container.

4. The device according to claim 1, in which the average distance d2 is preferably equal to the distance at which the plastic container coated with diamond-like carbon film, guarantees prescribed kislotonepronitsaemost, and the entire surface of the wall of the plastic container coated with the specified film has approximately the same color.

5. The device according to claim 1, in which the average distance d2 is determined from the equation d2=K×(D1-D2)/2+d1, where D1 is the average diameter of the hull packaging, D2 - average diameter Golovino part of the packaging, the K - factor bias, satisfying dependencies 0,29≤K≤0,79 at 0.2 mm≤d1≤2.0 mm or 0.11≤K≤0,51 at 0.2 mm≤d1≤4,0 mm

6. The device according to claim 1, in which the average distance d2 is determined from the equation d2=αK×(D1-D2)/2+d1, where D1 is the average diameter of the hull packaging, D2 - average diameter Golovino part, K - factor bias, which satisfies the dependency 0,29≤K≤ 0,79 at 0.2 mm≤d1≤2.0 mm or 0.11≤K≤0,51 at 0.2 mm≤d1≤4.0 mm, and α - compensation coefficient packaging, which takes into account the dependence on the shape of the containers that satisfy the equation α=(D1/D2)2/3,54.

7. Device according to any one of claims 1 to 6, in which the container has a shape symmetrical with respect to the Central axis in the vertical direction, and the shape of the inner wall surrounding the container electrode is symmetrical with respect to the Central axis when the container is enclosed inside.

8. Device according to any one of claims 1 to 6, in which the container is enclosed within a surrounding container electrode, the inner wall surrounding the container of the electrode around the hull of the container has a cylindrical shape, the inner wall surrounding the container of the electrode around Golovino part of the container has a cylindrical shape with a truncated cone whose diameter decreases when approaching the mouth of the container, and an inner wall surrounding the container electrode has a continuous form, which is not different steps.

9. The device according to claim 8. in which the inner wall surrounding the container of the electrode around the opening of the container has a cylindrical shape.

10. Device according to any one of claims 1 to 6, in which case part of the container has the shape of a square tube, the inner wall surrounding the container of the electrode around the hull of the container has the shape of a tube Quad is Atego section, inner wall surrounding the container of the electrode around Golovino part of the container has the shape of a square tube with a truncated pyramid, the size of which decreases when approaching the mouth of the container, the shape of a tube of square cross section or shape, which is a combination of the above forms, and the inner wall surrounding the container electrode has a continuous form, which is not different steps.

11. The device according to claim 10, in which the inner wall surrounding the container of the electrode around the opening of the container has the shape of a square tube.

12. Device according to any one of claims 1 to 6, 9, 11, which surrounds the container, the electrode is made such that d1 is greater than 0 mm and less than or equal to 4 mm

13. Device according to any one of claims 1 to 6, 9, 11, in which the container is a container for beverages.

14. The device for manufacturing a plastic container coated with diamond-like carbon film containing surrounding the container electrode, forming one part of the chamber to reduce the pressure in which is enclosed container, made of plastic, the front electrode facing to the surrounding container electrode and located inside the container above the opening of the container and surrounding the container electrode and the front electrode facing each other and separated by an insulating body forming part of the chamber to reduce pressure, means for supplying a source gas that is converted is about to plasma for coating the inner surface of the wall of the container diamond-like carbon film, includes intake tube intake gas located in the chamber to reduce the pressure for introducing the source gas into the chamber to reduce the pressure inside the container, pumping means for pumping gas from the openings of the containers inside the chamber of reduced pressure connected to the outer container to the electrode means for supplying high frequency in the surrounding container electrode, means for regulating the pumping of gas through the free limit the amount of pumped gas produced from the horizontal section of the chamber reducing the pressure of the holes of the container.

15. The device according to 14, in which the container is a container for beverages.

16. A method of manufacturing a plastic container coated with diamond-like carbon film, comprising the following steps: pumping the contents of the plastic container to the pressure, the smaller the set pressure, or equal to, the introduction of the source gas converted to plasma inside the container with continued pumping the contents of the container, whereupon the contents of the container with a source gas inside the container is created, the specified pressure equilibrium, and mainly the termination of pumping the contents of the container and reducing the speed of the source gas to a value less speed injection at the time of replacement, so that the current of the source gas within the container slows down, the pressure distribution inside the container becomes approximately uniform, then create inside container of a plasma source gas for the formation of diamond-like carbon film on the inner surface of the walls of plastic containers.

17. The method according to clause 16, in which the container is a container for beverages.

18. A method of manufacturing a plastic container coated with diamond-like carbon film, comprising the following steps: pumping the contents of the container, made of plastic, to achieve the pressure, the smaller the set pressure, or equal to, the reduction in the rate of pumping the contents of the container to its zero value and the introduction of the source gas converted to plasma, inside the packaging, after which create inside of container of the plasma source gas for the formation of diamond-like carbon film on the inner surface of the wall of the plastic container at the time when the distribution of pressure inside the container is approximately uniform and reached the set pressure.

19. The method according to p, wherein the container is a container for beverages.

20. A plastic container having a diamond-like carbon film formed on the inner surface of its wall, and a Cabinet containing part and hallowindow part located between the hole and Cabinet part, and the cross-sectional area of the openings of the containers are made of smaller cross-sectional area in the horizontal is icenii hull packaging with this film, is formed on Golovino part has a smaller proportion of graphite mixture than the film formed on the hull, and the permeability of the container is less than or equal 0,0050 ml per container made of polyethylene terephthalate with a capacity of 500 ml per day at a temperature of 23°C and relative humidity of 90%, with obtaining measured values via 20 h after the beginning of the displacement of gaseous nitrogen.

21. A plastic container according to claim 20, in which the amount of graphite mixture in diamond-like carbon film formed on Golovino part is 5-18% of the number of graphite mixture in the hull.

22. A plastic container having a diamond-like carbon film formed on the inner surface of its wall, and a Cabinet containing part and hallowindow part located between the hole and Cabinet part, and the cross-sectional area of the openings of the containers are made of smaller cross-sectional area in the horizontal section of the Cabinet portion of the container, and this film, is formed on Golovino part, has a higher content of hydrogen atoms than the specified film formed on the hull, and the permeability of the container is less than or equal 0,0050 ml per container made of polyethylene terephthalate with a capacity of 500 ml per day at a temperature of 23°and Rel the relative humidity of 90%, obtaining measured values via 20 h after the beginning of the displacement of gaseous nitrogen.

23. A plastic container according to item 22, in which the proportion of carbon and hydrogen in the composition of diamond-like carbon film formed on Golovino part is 37/63-48/52, and the proportion of carbon and hydrogen in the composition of the specified film formed on the hull, is 55/45-75/25.

24. Plastic containers, covered with diamond-like carbon film, which is the plastic container, having a diamond-like carbon film formed on the inner surface of its wall, when the cross-sectional area of the openings of the containers are made of smaller cross-sectional area in the horizontal section of the Cabinet portion of the container, and between the hole and Cabinet part is gerlovina part, and diamond-like carbon film formed on Golovino part has a smaller proportion of graphite mixture and a higher content of hydrogen atoms than the specified film formed on the hull, and the oxygen-mentioned container is less than or equal 0,0050 ml per container made of polyethylene terephthalate with a capacity of 500 ml / day at a temperature of 23°C and relative humidity of 90%, with obtaining measured values via 20 h after the beginning of the displacement of gaseous nitrogen.

25. PLA is massova the container on point 24, in which the amount of graphite mixture in diamond-like carbon film formed on Golovino part is 5-18% of the number of graphite mixture in hull, the proportion of carbon and hydrogen in the composition of the specified film formed on Golovino part is 37/63-48/52, and the proportion of carbon and hydrogen in the composition of the specified film formed on the hull, is preferably 55/45-75/25.



 

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