DD156702A5 - METHOD AND DEVICE FOR REPAIRING SURFACE-PROOF GLASS TANK - Google Patents

Abstract

The invention relates to a method for repairing surface-damaged glass containers, as can be used, for example, in the beverage industry, and to the apparatus required for carrying out the method. Based on the goal to extend the Einsatzfaehigkeit of the risk of scratch marks underlying glass containers, the object is to provide a method for repairing surface beschaedigter glass containers. As a solution, it is proposed that scratched areas in the surface-damaged areas be filled with plastic and preferably covered with a thin plastic film. The device has Foerdermittel for the bottles and a commissioned work for the plastic, which may be a drying section upstream and downstream.

Description

JLP C 03 C / 228 015/3 58 902 23

Method and device for repairing surface-damaged glass containers. '

Field of application of the invention

The invention relates to a method for repairing surface-damaged glass container / in particular scratched bottles, which are used in the beverage industry, as well as the required apparatus for performing the method.

Characteristic of the known technical solutions

It is known, for the protection of bottles, but also for decoration purposes, to provide the bottles with a plastic coating. The plastic coating should protect the glass from scratching and prevent the wall thickness of the bottle from being weakened by the scratch marks. The coating is also to be chosen so that it can withstand the multiple stresses of repeated bottle wrap. Although in this case the glass container itself is protected from scratching, but not the plastic coating. When repeated bottle wrap the plastic coating is unsightly (DE-OS 2 503 813, DE-OS 2,334,466).

In order to extend the usefulness of bottles with an appealing appearance, a special form for the bottles has been proposed, in which a projecting, narrow collision collar is arranged at the top and bottom of the bottle body. Although this collar will be scratched in use, the scratch marks on this collar, due to the narrow banding, will less affect the appearance of the bottle than scratch marks distributed over the smooth bottle surface over an undisclosed larger area.

All these reusable bottles become unsightly over time due to scratches at least at the lower and upper edge of the cylindrical trunk. Beverage bottlers who attach great importance to the appearance of the bottles, but such glass containers, although the bottles are otherwise perfectly perfect, which means a significant economic loss.

It is also known to apply to glass containers by printing a soluble or decomposable plastic layer in conventional cleaning solutions. This plastic layer is to serve as a decoration and replace a labeling with printed blanks of foil or paper (DE-AS 2 558 312).

Object of the invention

The aim of the invention is the applicability of the risk of scratch marks glass containers, in particular

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Bottles, extend.

Explanation of the essence of the invention

The invention has for its object to provide a method for repairing surface damaged glass container, in particular scratched 'bottles show. It is a further object of the invention to provide the apparatus required for carrying out the method.

According to the invention, this object is achieved by a method in which the recessed and / or scratched areas in the surface-damaged areas are filled with a plastic which penetrates into these areas due to its low surface tension.

Preferably, this is done in such a way that at least the surface-damaged areas are coated with a thin (up to 10 μ) plastic film.

While in the known method, the glass container is protected by the plastic coating from scratch marks, the invention goes a completely different way by allowing the scratch marks, but this eliminated by the thin plastic coating, thus restoring the pleasing appearance of the bottle. Since the bottle should not be protected against scratch marks, but only the scratch marks should be made invisible, you only need a relatively thin plastic coating. On the plastic are also no high

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Requirements for scratch resistance, because the plastic coating is preferably renewed with each new envelope. Although you will usually coat the bottle completely, a local coating in the scratch-prone surface areas is sufficient.

The durability of the plastic film on the bottle can be improved by applying the plastic film in a waterproof thickness. In this embodiment, the risk of premature detachment is limited to the edge regions. If the plastic film is porous, on the other hand, water can have a substantially detaching effect over the entire surface. The risk of detachment can of course be reduced in this case by a suitably adherent plastic.

According to a further embodiment of the invention, a Kunstsotff is used, which is incontrovertible in water but is removed by a cleaning solution by the plastic dissolves, dissolves or decomposes. The detachment of the film then takes place simultaneously with the cleaning of the container, which is necessary in any case.

Good results are achieved when the plastic is cured by UV radiation.

So that after the application of the plastic suc-

ing handling of the bottle, the bottle surface is not unsightly, a shock and / or scratch-resistant plastic is preferably used. As already stated, the requirements for such a plastic need not be particularly great, since it is preferably renewed with every new bottle change.

Since the plastic usually does not change the appearance of the bottle, but only to make the scratch marks invisible, a plastic is used according to another proposal, the color of which corresponds to the bottle.

The application of the plastic coating can be done in various ways. According to a first embodiment, this is done by applying a gaseous plastic by sublimation. According to other embodiments, the application takes place in that liquid plastic is sprayed by rolling a liquid to paste form! It is plastic, by immersion in a bath of liquid plastic, or by dousing with liquid plastic.

Preferably, the glass container is cleaned and dried prior to application of the plastic, in particular under / application of heat, so that the plastic over the entire surface and bubble-free and smooth can be applied.

The drying can be done by doctoring and / or suction and / or blowing off. Preferably, it is done using heat.

If the desired layer thickness of the plastic coating is not already obtained during application / it can be adjusted by dripping and / or blowing off and / or doctoring and / or scraping.

Preferably, after the application or after the adjustment of the thickness of the plastic layer, the plastic coating is dried, in particular by UV radiation,

There is also a device for carrying out the method of repairing surface damaged. Glass container proposed. This contains according to the invention conveyor means for the bottles with a plurality of successive treatment sections, of which the first is designed as a drying section and the second as a job path for the plastic.

An end-drying section of the plastic coating can be connected to the order section.

The drying section preferably has blast-air-fed nozzles.

In order to eliminate any remaining moisture on the surface to be coated of the container, according to a further embodiment of the device is provided that the drying section has heat rollers on its end portion at which the glass containers roll off. ,

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The drying of wet bottles can be carried out particularly effectively if the drying section has wipers which can be attached to the container surface. Preferably, the wipers are sheet-shaped and a rotary drive for the bottles pre-

 handen. The bottles are therefore associated with a drive which causes the bottles to rotate in their own way so that the entire surface is wiped off the sheet-shaped wipers.

Wipers and nozzles can be arranged on an inlet star and rotate with the inlet star.

The funding of the drying section expediently consist of a screw conveyor and an adjoining starter.

The conveyor for the job path preferably consists of a rotating table with circumferentially arranged receiving spaces for the bottles.

According to a first embodiment, the applicator of the order line on at least one spray head.

Each spray head may have the shape of a vertical bar, wherein the rotary drive of the bottle consists of a rotary head or turntable, which sets the bottle in self-rotation. During the rotation of the bottle, it is coated on its entire circumference,

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But the spray head can also have the shape of a ring which is arranged on a vertical guide and connected to a drive.

According to another embodiment ₇ in which the plastic is not sprayed on, but rolled up or printed, the commissioned work consists of an endless belt extending along the application path, to which an applicator roller is assigned.

But it is also possible that the commissioned job consists of on a carrier connected to a rotary drive arranged application segments, which is associated with an applicator roll and the rotary drive of each bottle is designed as a rotary head and turntable.

At the final drying section, emitters, in particular UV emitters, can be arranged.

Furthermore, an additional treatment section with at least one labeling machine can then be provided subsequent to the final drying section.

embodiment

In the following the invention will be explained in more detail on some embodiments. The accompanying drawings show:

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Fig. 1 shows a device for repairing

Glass containers in a schematic representation in supervision;

2 shows an inlet star in a plan view;

Fig. 3 the inlet star according to Fig.2 in

axial section;

Fig. 4-7 different versions of commissioned works and

8 shows a device for drying or hardening,

The device for repairing the glass containers, eg bottles 1, consists of a plate conveyor belt 2 with a subsequent first treatment section, which is designed as a drying section 3. On this, a screw 4 is arranged, which serves for separating the bottles. On the output side, the drying section 3 has an inlet star 5. At the inlet star 5 is followed by a rotating table 6 with a plurality of receiving places 7 for the bottles 1 at. The outlet of the device is formed by an outlet star 8, to which a conveyor belt 9 connects.

The basic structure of this device is known from bottle filling machines. From these machines

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It is also known that the receiving places 9 may be formed as a turntable, which are assigned to the bottles 1 aufstülpbare turrets 10 to enable the bottles in self-rotation. Because of this known structure can be omitted to a detailed description., Especially since it is not essential for the inventive method and apparatus according to the invention.

In the embodiment of FIG. 1, a blow box 11 with nozzles 12 is arranged on each side of the screw 4. To the blow boxes 11, an inlet star 5 connects with a plurality of rotatable, heated rollers 13, which has an outer guide rail 14 for the bottles. The inlet star 5 is arranged at the entrance of the table 6, together with this under a hood 15 with outlet 16.

Blown air is blown against the bottles 1 to be dried by the screw 4 via the nozzles 12. The dried by blowing air bottles then enter the inlet star 5. The rotatable, heated rollers have resilient lateral surfaces on which roll off the outside of the guide rail 14 supported bottles. This heats the bottles and removes residual moisture from their surface. The heating also has the effect that no moisture condenses on the surface prior to the application of the plastic.

The blowing air continues into the hood 15 and into the area of the table 6, where the plastic is applied.

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fs λ f% 4 f "*% to ν- J ^

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Volatile solvents of the plastic coating are discharged via the outlet 16 together with the supplied blown air.

Instead of the blow boxes 11 with the blasluftgespeisten nozzles 12 / or in addition to them, other means for drying the wet bottles can be provided. In the case of the embodiment of FIGS. 2 and 3, a special inlet star 5 is provided. This inlet star has lower 17 and upper pairs of support rollers 18 for the bottles, also a guide rail 14, as well as blade-shaped wipers 19 and 12 further nozzles.

The bottles 1 are pressed by the lower and upper support roller pairs 17 and 18 in an analogous manner against the guide rail 14. Upon rotation of the inlet star 5, the bottles 1 perform a self-rotation. The each wiper seat 19 associated with sheet-like wipers 19 remove by stripping liquid from the surface of the bottle 1. The pre-dried in this way bottles then reach the area of other blasluf tuespeisten nozzles 12, which terminate the drying process. It is possible to blow the nozzles with warm air to heat the bottles. Thereby, the same effect as with the heated rollers 13 is achieved.

As soon as the bottles 1 leave the inlet star 5, they reach the second treatment section, the application section 20. This second treatment section is equipped with one of the applicators 21 of FIGS. 4 to 7.

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The applicator 21 of FIG. 4 consists of several on a closed, along the transport path of the bottles inside or outside running closed track 22 encircling, strip-shaped spray heads 23, which are connected via lines 24 to a common supply for the plastic. The recording slots 7 are formed as a turntable and they are assigned to the bottles 1 aufstülpbare 10 heads.

The spray heads 23 move synchronously with the receiving places 7 of the bottles 1. The self-rotating by self-known heads 10 bottles 1 are as long under the action of the spray heads 23 until each bottle has performed a rotation through 360 °.

The commissioned work 21 of FIG. 5 differs from the commissioned work of FIG. 4 in the spray heads. The spray heads 23 of FIG. 5 are annular and connected to a lifting cylinder 25, by means of which they are driven over the Gesamize height of the bottles. As in the embodiment of FIG. 4, the spray heads 23 can rotate on a closed, fixed path 22 and move to a part of the transport path with the bottles, but it is also possible that each receiving station 7 of the bottles 1, a spray head 23 is associated. With annular spray heads, it is not necessary for the bottles to self-rotate.

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In the embodiment of FIG. 6, the commissioned work 21 consists of an over rollers 26 circulating elastic band 27, an applicator roll 28 and a scraper 29th

The bottles 1 roll on the belt 27 and the plastic, as known from the glue roller in labeling machines, applied by means of the applicator roll 28 on the elastic band 27. The layer thickness is adjusted by the scraper 29.

The applicator 21 of FIG. 7 largely corresponds in structure to that of a labeling machine and represents the preferred embodiment. Application elements 30 with a curved surface are mounted in a rotating carrier 31 in a rotating or oscillating manner. They are assigned an applicator roll 28 and a scraper 29. The applicator elements 30 roll off the applicator roller 28, which is supplied with plastic in the manner of a glue roller. The coated on its surface with plastic applicator elements 30 then roll on the self-rotating exporting bottles 1 and thereby coat the bottle 1. As known from labeling machines, this is done by means of a non-uniform drive, a corresponding curvature of the coated surface of the applicator element 30 and its storage, wherein the entire surface of the bottle is coated without or with relative movement between the bottle and the surface. In this way one obtains a uniformly thick coating.

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A third treatment path, the final drying section 32, may be connected to the application path, to the two sides of which, according to FIG. 8, for the drying or hardening of the plastic coating, radiators 33, in particular UV radiators, are arranged. The length of this treatment section depends on the residence time required for drying.

As shown in FIG. 1, a last treatment section 34 remains in the table 6. One or more conventional labeling machines 35 can be arranged at this last treatment section.

The bottles are thus purified by the process according to the invention, dried, coated, finally dried and possibly labeled.

The drying takes place on the drying section 3, in that the bottles 1 are conveyed by the screw 4 and separated and simultaneously treated with blowing air from the nozzles 12. They then pass into the inlet star 5, where excess water is stripped off by rollers 13 or wiper 19 and further drying by blowing air from the additional nozzles 12 takes place.

The bottles 1 are then transferred to the table 6 where, on the application line 20, the application of preferably liquid plastic, e.g. an acrylic resin-monomer mixture dur.ch a commissioned work, as shown in Figs. 4-7, is made. Is a final drying

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required with the use of additional drying agent / this can be done on the subsequent final drying section of the table 6. But it can also be a satisfactory drying, in most cases by the air duct under the hood 15, from the blow boxes 11 to the outlet 16 can be achieved. With a corresponding size of the table 6, this space provides for the arrangement of an additional treatment section 34, on which the bottles are subsequently labeled by labeling machines 35. The bottles are then transferred via discharge star 8 on the conveyor belt 9.

Claims (33)

invention claim "(1) is present. 1. A method for repair surface beschääigter glass containers, in particular scratched bottles, characterized in that in the surface damaged areas, the recessed and / or scratched areas with a penetrating due to its low surface tension in these places plastic   be filled. 2. The method according to item 1, characterized in that at least the surface-damaged areas are coated with a thin (up to 10 μ) plastic film. 3. The method according to item 2, characterized in that • the plastic film is applied in waterproof thickness. · 4. The method according to item 1-3, characterized in that a plastic is used / which is incontestable in water, but is removed by a cleaning liquor. 5 3 5. The method according to item 1-4, characterized in that the plastic is cured by UV radiation, is. 6. The method according to item 1-5, characterized in that a shock and / or scratch-resistant plastic is used. 7. The method according to item 1-6, characterized in that a plastic is used, the color of which corresponds to the bottle. 8 015 the second is designed as a job path (21) for the plastic. 8. The method according to item 1-7, characterized in that a gaseous plastic is applied by sublimation. 9. The method according to item 1-7, characterized in that a liquid plastic is sprayed. 10. The method according to item 1-7, characterized in that the application is carried out by rolling a liquid to pasty plastic. 11. The method according to item 1-7, characterized in that the application is carried out by dipping in a bath of liquid plastic. 12. The method according to item 1-7, characterized in that the application is carried out by pouring with liquid plastic. 13. The method according to item 1-12 / characterized in that the glass container is cleaned and dried before applying the plastic. 14. The method according to item 13, characterized in that the drying takes place by doctoring and / or suction and / or blowing off. 15. The method according to item 13 or 14, characterized in that the drying is carried out using heat. 16. The method according to item 1-15, characterized in that the layer thickness of the plastic coating by dropping and / or blowing off and / or doctoring and / or scraping is adjusted. 17. The method according to item 1-16, characterized in that the plastic coating is dried. - 17 - 28015 18. Apparatus for carrying out the method according to item 1-17, characterized in that it contains conveying means (2,4,5,6,8 / 9) for the bottles (1) with a plurality of successive treatment sections, of which the first as a drying section (3) and - 18 - 228015 3 19. The device according to item 18, characterized in that on the application path (21) has a final drying section (34) of the plastic coating is connected. > - 20 - Length. ü % J I 20. The device according to item 18 or 19, characterized in that the drying section (3) blasluftgespeiste nozzles (12). - 21 - 21. Device according to item 18-20, characterized in that the drying section (3) has heat rollers (13) on its end section. 22. Device according to item 18-21, characterized in that the drying section (3) wiper (20). 23. The device according to item 22, characterized in that the wipers (20) are sheet-shaped and a rotary drive for the glass bottle ' 24. The device according to item 22 or 23, characterized in that the wiper (20) and the nozzles (12) are arranged on an inlet star (5). 25. Device according to item 18-24, characterized in that the conveying means of the drying section (3) consist of a screw conveyor (4) and an adjoining inlet star (5). 26. The device according to item 18-25, characterized in that the conveying means for the Auftragsstrecke (21) and the final drying section (34) consists of a rotating table (4) arranged on the circumference receiving spaces (7) for the bottles (D. 27. The device according to item 18-26, characterized in that the applicator unit (22) of the applicator section (21) at least one iSpsrühkopf (25). 28. The device according to item 18-27, characterized in that each spray head (25) has the shape of a vertical bar and the rotary drive of the bottle (1) consists of a rotary head (10) and turntable. 29. Device according to P.unkt 18-27, characterized in that the spray head (25) has the shape of a ring which is arranged on a vertical guide and connected to a drive. 30. The device according to item 18-26, characterized in that the applicator unit (22) consists of a along the Auftragsstrecke (21) extending endless belt (29), which is associated with an applicator roll (30). 31. The device according to item 18-26, characterized in that the commissioned work (22) arranged on a carrier connected to a rotary drive (33) arranged application segments (32), which an applicator roller (30) is associated and the rotational drive of each "bottle (1) as a rotary head (10) and turntable »"i is trained. ^J * 32. Device according to item 18-31, characterized in that at the final drying section (34) emitters (35), in particular UV lamps, are arranged. 33. Device according to item 18-32, characterized in that subsequent to the final drying section (34) an additional treatment section. (36) is provided with at least one labeling machine (37).