Nozzle head, cleaning system, cleaning method and glass element

Abstract

This invention relates to a nozzle head and a cleaning system including such a nozzle head. The invention also relates to a method for cleaning glass elements, particularly a method for cleaning glass elements using a nozzle head or cleaning system according to the invention. The invention further relates to glass elements and bundles thereof.

Description

Technical Field

[0001] This invention relates to a nozzle head and a cleaning system including such a nozzle head. The invention also relates to a method for cleaning glass elements, particularly a method for cleaning glass elements using a nozzle head or cleaning system according to the invention. The invention further relates to glass elements and bundles thereof. Background Technology

[0002] In the prior art, glass components such as glass tubes can become contaminated. In particular, particles can accumulate on the surface of the glass component, especially its inner surface.

[0003] Particles may originate, for example, from the manufacturing process of the corresponding glass element. In the case of glass tubes, a particularly significant source of particles is the process of forming glass tube bundles into glass tubes. Here, the glass tubes are elongated from the glass bundle by sawing or otherwise cutting. This is accompanied by the generation of a large number of particles, which mainly accumulate in the end regions of the glass tubes. After forming, the glass tubes (especially their ends) are subsequently heated again to seal and shape the cut edges.

[0004] However, this can result in loose particles in the end region becoming firmly attached to the surface of the glass tube. Of course, particles from other sources, such as dust, segregants, or dirt from the environment, may also subsequently adhere to the glass element during the heating process. These particles are usually not removed during subsequent washing and therefore remain in the final glass element.

[0005] However, depending on the intended use of the glass element, particles are highly undesirable. For example, if the glass element is intended to be used as a pharmaceutical container to hold a pharmaceutical composition, high-quality glass elements (i.e., with no or almost no particles) are particularly important. Particles adhering to the inner surface of the glass element (e.g., the surface of the glass tube facing the inner lumen) are especially problematic. If they come into contact with the pharmaceutical composition, the composition may become contaminated because substances from the particles may leak into the composition, or even the particles may detach entirely from the surface of the glass element and enter the composition.

[0006] Therefore, in conventional manufacturing processes, such as those for glass tubes, after stretching and before heating, pressurized air is used to remove particles from the inner surface of the glass tube. This is achieved by injecting airflow from one end of the glass tube through a nozzle head to blow the particles to the other end, thus expelling them from the glass tube. While this process is technically easy to implement, it also has drawbacks.

[0007] In this respect, only a portion of the air is actually injected into the glass tube, while the rest is blown through the tube and may stir up dust and other contaminants in the environment. This could potentially create new sources of pollution. Furthermore, particles are blown from one end to the other via the middle section of the glass tube. Therefore, there is a risk that the later middle section may be more contaminated than initially, especially since there are usually more particles at the ends than in the middle. It has also been noted that high pressure will result in strong noise emissions. Additionally, due to the laminar airflow created within the glass tube, the flow velocity on the inner surface of the tube decreases with increasing distance. Therefore, the farther the particles are from the end, the weaker the interaction force between the injected airflow and the particles. Consequently, glass tubes exceeding a certain length may not be able to be adequately cleaned along their entire length.

[0008] Therefore, one object of the present invention is to overcome the aforementioned disadvantages compared to the prior art by providing a means to reduce particulate contamination of glass elements in a simple and economical manner. Another object of the present invention is to provide a high-quality glass element and a bundle comprising such a glass element. Summary of the Invention

[0009] The present invention solves this problem according to a first aspect by providing a nozzle head for cleaning the interior of a glass element using a fluid, the nozzle head comprising:

[0010] At least one clean opening for discharging at least a portion of the fluid and pointing in a first direction; and

[0011] At least one pressure-balancing opening for discharging at least a portion of the fluid and pointing in a second direction;

[0012] The two half-spaces (i.e., the first half-space and the second half-space) are separated by a plane perpendicular to the central axis of the nozzle head.

[0013] Wherein, the first direction vector of the first direction points toward the first half-space and / or away from the second half-space;

[0014] The second direction vector of the second direction points toward the second half-space and / or away from the first half-space.

[0015] Therefore, this invention is based on a surprising discovery: particles can be effectively removed from a glass element if a nozzle head can be inserted into the glass element and the particles are blown back to the proximal end of the glass element instead of being blown back to the distal end of the glass element through the middle portion. This is achieved by the invention, wherein the cleaning opening is oriented in a first direction, such that fluid is also discharged in or toward the first half-space (i.e., in a rearward direction).

[0016] Furthermore, the inventors have recognized that inserting the nozzle head into the glass element significantly increases the interaction between the fluid and the particles. Additionally, the particles are prevented from being blown across the middle portion of the glass element. Therefore, a more efficient cleaning process can be achieved.

[0017] By providing a pressure balancing opening to achieve pressure balance, it can be reliably ensured that other particles located behind the nozzle head are not sucked into the fluid flow during the process of blowing particles out of the glass element.

[0018] Both halves of the glass element can be cleaned independently from both ends. Due to pressure balance, particles will not be drawn into the other half. Similarly, when the glass element is cleaned from both ends in parallel by two separate nozzles, the pressure-balanced openings prevent negative pressure from being generated within the glass element and prevent particles from being drawn in.

[0019] Because the nozzle head can be inserted into the glass element, the fluid flow is effective only within the glass element. Furthermore, the entire fluid flow discharged from the nozzle head, whether through the cleaning opening or the pressure equalization opening, is directed to the outside of the glass element. Therefore, no external particles can enter the glass element. Since the fluid flow is directed backward, the possibility of air being drawn in from the outside of the glass element, which could be caused by fluid discharged through the pressure equalization opening, is also avoided.

[0020] Therefore, the method of the present invention can achieve the cleaning of glass elements (e.g., glass tubes of almost any length). Furthermore, it is sufficient and appropriate to insert the nozzle head only to the center of the glass element or even a shorter distance, such as into the area to be cleaned. Therefore, the length of the nozzle head arm can be designed to be shorter. This prevents the arm from swinging, thereby preventing the nozzle head from swinging. This avoids the possibility of damage to the glass element due to collision with the nozzle head.

[0021] It should be acknowledged that, in this invention, the preferred term "opening," especially in relation to a cleaning opening or a pressure-balancing opening, should be understood as, for example, a three-dimensional space that can be obtained by drilling.

[0022] It should be acknowledged that, in this invention, preferably, the direction in which the cleaning opening or pressure opening points should be understood as pointing outwards from the volume surrounded by the shape of the nozzle head, and that this direction is perpendicular to at least one cross-section of the respective opening. Alternatively, the direction in which the cleaning opening or pressure balancing opening points can also be understood as the direction in which the respective opening substantially discharges fluid.

[0023] The central axis of the nozzle head is, for example, the axis of rotation of the nozzle head.

[0024] It has been found that when a nozzle head is used to clean glass components (e.g., tubular components), no negative pressure is generated at the ends of the corresponding glass components, especially at the ends of the corresponding tubular components. If the nozzle inside the glass tube blows vertically towards the tube wall, overpressure will occur at both ends in the case of a single nozzle. Otherwise, if the cleaning nozzle is pointed at one end of the glass component, the generated airflow will carry air from the other side, creating negative pressure on the second side. As a result, particles from the environment will be drawn into the glass component. However, the nozzle head proposed in this paper suppresses this air entrainment phenomenon. For this purpose, a small opening in the nozzle pointing to the second end of the tube, such as a slit, may be sufficient to achieve this. Therefore, the proposed nozzle head is able to remove particles from the interior of the glass component (e.g., tubular component) without causing further contamination.

[0025] In one embodiment, it may be preferred that the nozzle head further includes:

[0026] At least one feed opening for supplying fluid to the nozzle head and pointing in a third direction.

[0027] Preferably, (i) the third-direction vector of the third direction points toward the first half-space and / or away from the second half-space; (ii) the third-direction vector is antiparallel to the second direction; and / or (iii) the third-direction vector is parallel to the central axis of the nozzle head.

[0028] The feed opening allows the fluid supply line to be easily and securely attached to the nozzle head.

[0029] Due to the appropriate distribution of different openings throughout the nozzle head, the corresponding orientation of the feed openings can result in a nozzle head that can be operated safely.

[0030] It should be acknowledged that, in this invention, the preferred term "opening," especially in relation to a feed opening, should be understood as, for example, a three-dimensional space that can be obtained by drilling.

[0031] It should be acknowledged that, in this invention, preferably, the direction in which the feed opening points should be understood as pointing outward from the volume surrounded by the shape of the nozzle head, and that this direction is perpendicular to at least one cross-section of the feed opening.

[0032] In one embodiment, it may be preferred that the nozzle head is configured such that a first ratio (mass / mass) of the amount of fluid discharged from the pressure balancing opening to the amount of fluid discharged from the cleaning opening is 0.2 or more, preferably 0.5 or more, preferably 0.9 or more, preferably 1 or more, most preferably 1.5 or more, and / or 20 or less, preferably 10 or less, more preferably 5 or less, more preferably 1 or less, more preferably 0.9 or less, more preferably 0.5 or less, especially when fluid is supplied to the nozzle head through the feed opening at an absolute pressure of 1 to 10 bar, preferably 2 to 6 bar, most preferably 3 bar; and / or,

[0033] It is possible that the second direction vector is parallel to the central axis, and the first direction vector is neither parallel to nor antiparallel to the central axis; and / or, the angle between the line defined by the first direction vector and the plane perpendicular to the central axis is between 10 degrees and 89 degrees, preferably between 20 degrees and 80 degrees, more preferably between 30 degrees and 80 degrees, and most preferably between 40 degrees and 80 degrees.

[0034] By using an appropriate first ratio, pressure conditions that achieve particularly good cleaning results can be obtained. Results show that negative pressure can be avoided, especially at both ends of a glass element (e.g., a tubular element), based on the recommended value of the first ratio. This ratio can preferably be a value greater than 1 or less than 1.

[0035] In one embodiment, the nozzle head is configured such that there is overpressure in both half-spaces within the tubular element relative to the environment outside the tubular element.

[0036] The preferred first ratio enables the nozzle head to achieve a particularly effective operating mode and good cleaning results.

[0037] In a preferred embodiment, the first ratio is 1 or more, preferably 1 to 5, more preferably 1 to 2, more preferably 1.0 to 1.5, and even more preferably in the range of 1.00 to 1.3. If the ratio is 1 or more, preferably greater than 1.00, the cleanliness of both ends of the glass element can be improved.

[0038] This configuration is particularly useful, for example, when cleaning tubular elements. The cleaning process can then be performed easily and effectively when the portions of the two half-spaces within the tubular element are under pressure relative to the environment of the tubular element. Furthermore, a first ratio of 1 or higher prevents the generation of negative pressure and the inhalation of particles within the glass element.

[0039] In a preferred embodiment, the first ratio is less than 1. More preferably, the first ratio is between 0.1 and 0.99, more preferably between 0.2 and 0.9, and even more preferably between 0.2 and 0.8.

[0040] By appropriately selecting the orientations of the cleaning opening and the pressure balancing opening, the fluid flow can effectively interact with the particles. For example, it has proven advantageous for the pressure balancing opening to emit the fluid flow parallel to the central axis, while the cleaning opening emits the fluid flow in the opposite direction at an angle to the central axis.

[0041] In one embodiment of each cleaning opening, the angle between a corresponding line defined by a corresponding first direction vector and a plane perpendicular to the central axis satisfies the condition.

[0042] In one embodiment, it may be preferred that the nozzle head includes a plurality of cleaning openings, preferably 2 to 50 cleaning openings, more preferably 2 to 30 cleaning openings, more preferably 2 to 12 cleaning openings, more preferably 2, 4, 6, 8, 10 or 12 cleaning openings, each cleaning opening pointing to a first direction having its own first direction vector.

[0043] Multiple cleaning openings allow the fluid to be evenly distributed around the nozzle head. Therefore, glass components can be cleaned more precisely and effectively.

[0044] Preferably, at least some cleaning openings are arranged along at least a portion of at least one circle extending around the outer periphery of the nozzle head, especially the circle being concentric with the central axis of the nozzle head.

[0045] Preferably, the nozzle head includes six cleaning openings.

[0046] It should be acknowledged that each cleaning opening may point to a different first direction, and this is usually the case. Therefore, there may be multiple first directions, and the number of first directions may equal the number of cleaning openings. However, in the case where two or more of the multiple cleaning openings point to a common first direction, the number of different first directions may be less than the number of cleaning openings.

[0047] In one embodiment, it may be preferred that the nozzle head includes a single feed opening and / or includes multiple feed openings, preferably 2 to 10, more preferably 2 to 3, and most preferably 2 feed openings;

[0048] Preferably, the nozzle head includes a single pressure balancing opening and / or includes multiple pressure balancing openings, preferably 2 to 10, more preferably 2 to 3, and most preferably 2 pressure balancing openings; and / or,

[0049] Preferably, the nozzle head includes a single feed opening and a single pressure balancing opening, with the single feed opening positioned opposite the single pressure balancing opening along the central axis.

[0050] A single pressure equalization opening makes the nozzle head more robust and easier to use.

[0051] A single feed opening makes the nozzle head more robust and easier to use.

[0052] A particularly efficient nozzle head can be achieved if it includes a single pressure-balancing opening and a single feed opening. If the openings are arranged opposite each other along the central axis, the symmetry of the nozzle head is improved, which reduces instability and potential oscillations during use.

[0053] In one embodiment, it may be preferred that at least some or all of the one or more cleaning openings are arranged in a plane, preferably perpendicular to the line defined by a third-party vector; and / or arranged such that they intersect the plane, preferably perpendicular to the line defined by the third-party vector.

[0054] A particularly symmetrical nozzle design is achieved when all or at least some of the cleaning openings at least partially determine the position and / or orientation of the plane. This, in turn, results in a highly symmetrical fluid output from the nozzle head, thus providing high cleaning capability.

[0055] In one embodiment, it may be preferred that at least one of the cleaning openings is slit-shaped, preferably all of the cleaning openings are slit-shaped, preferably 360-degree slit-shaped or circular.

[0056] Circular cleaning openings are easy to manufacture and produce a preferred fluid flow. Slit-shaped cleaning openings are suitable for obtaining uniform fluid flow in particularly large or curved output sections.

[0057] In one embodiment, it may be preferred that at least one of the pressure balancing openings, at least one of the cleaning openings, and / or at least one of the feed openings are arranged concentrically about the central axis.

[0058] For example, the cleaning opening can be a 360-degree slit opening, which can be set up particularly easily because it is arranged concentrically about the central axis.

[0059] If the feed opening and / or pressure balancing opening are arranged concentrically, the operation of the nozzle head will be safer and more convenient.

[0060] In one embodiment, a second ratio (mm²) of the cross-sectional area of ​​the pressure balancing opening to the cross-sectional area of ​​the cleaning opening may be preferred. 2 / mm 2 The value is 0.2 or higher, preferably 0.5 or higher, more preferably 0.9 or higher, more preferably 1.0 or higher, more preferably 1.50 or higher; and / or

[0061] It is possible that the second ratio is 20 or less, preferably 10 or less, more preferably 5 or less, more preferably 1 or less, more preferably 0.9 or less, or even more preferably 0.5 or less.

[0062] The preferred second ratio enables the nozzle head to achieve a particularly effective operating mode and good cleaning results.

[0063] In one embodiment, it may be preferred that the nozzle head comprises carbon fiber, metal, metal alloy or polymer, and more preferably aluminum, steel, brass, polytetrafluoroethylene or polyoxymethylene.

[0064] If a plastic material is chosen for the nozzle head, a very robust nozzle head can be obtained. Furthermore, this further reduces the risk of the nozzle head damaging the glass element during operation.

[0065] For example, nozzle heads can be manufactured through injection molding.

[0066] In one embodiment, it may be preferred that the maximum outer diameter of the nozzle head is less than 50 mm, preferably between 1 mm and 50 mm, more preferably between 2 mm and 25 mm, and most preferably between 3 mm and 18 mm.

[0067] The optimized outer diameter allows the glass element to be cleaned more effectively.

[0068] In one embodiment, it may be preferred that the nozzle head includes at least one supply channel or network of supply channels for supplying fluid from the feed opening to the pressure balancing opening and / or cleaning opening, wherein, preferably, the supply channel includes a cylindrical portion, particularly a cylindrical portion with a diameter of 1.5 mm or more and / or 25.0 mm or less.

[0069] The supply channel allows for proper and efficient distribution of fluid within the nozzle head. An appropriately sized supply channel enables matching with operational requirements (e.g., the maximum permissible pressure applied to the nozzle head), thus improving safety.

[0070] In one embodiment, it may be preferred that all pressure balancing openings and cleaning openings are fluidly connected to each other via supply channels or a network of supply channels.

[0071] If the openings are fluidly connected to each other via supply channels, the nozzle head can be manufactured particularly easily and inexpensively. Basically, openings can be drilled into the nozzle head until they connect precisely to the supply channels or networks of supply channels that may have already been set inside the nozzle head.

[0072] In one embodiment, it may be preferred that the nozzle head further includes at least one adjusting element for adjusting a third ratio, wherein the third ratio is the ratio (mass / mass) of the amount of fluid discharged from one or more, preferably all, cleaning openings to the amount of fluid discharged from one or more, preferably all, pressure balancing openings.

[0073] Preferably,

[0074] (i) The third ratio is adjusted by an adjusting element, wherein at least one cross section of each cleaning opening and / or pressure balancing opening is adjusted, in particular increased or decreased;

[0075] (ii) The regulating element includes at least one dose loop and / or at least a portion, particularly the end, of a fluid supply line;

[0076] (iii) The adjusting element is arranged at least partially inside the nozzle head;

[0077] (iv) The adjusting element can move within the nozzle head, especially along an adjusting direction parallel to the central axis;

[0078] (v) The third ratio can be adjusted by moving the adjustment element, especially along the adjustment direction;

[0079] (vi) The third ratio is measured for fluid pressures of 1 to 10 bar absolute pressure, preferably 2 to 6 bar absolute pressure, and most preferably 3 bar absolute pressure; and / or,

[0080] (vii) The nozzle head also includes a fixing element, such as a lock nut, for fixing the adjusting element in a specific position, in particular for preventing it from moving in the adjusting direction.

[0081] The regulating element allows the nozzle head to be used under different conditions. Different fluid volumes can be easily selected according to specific situations. The regulating element can also be set in a simple way.

[0082] If the regulating element includes a dose loop, the third ratio can be selected very precisely. If the regulating element is part of the fluid supply line, a very compact setup can be achieved.

[0083] If the adjusting element is arranged inside the nozzle head, a compact setup can be achieved. Furthermore, the adjusting element is securely mounted.

[0084] If the adjusting element is movable, the third ratio can be adjusted in a particularly simple and precise manner.

[0085] The mounting elements can be set up in a simple way, while the entire nozzle head still maintains a compact design.

[0086] In one embodiment, it may be preferred that the nozzle head includes a first threaded portion, preferably, the first threaded portion is at least partially included in at least a portion of the feed opening;

[0087] Furthermore, preferably, the adjusting element includes a second threaded portion, which preferably engages with a first threaded portion of the feed opening, and in particular, this engagement causes the adjusting element to move along the adjusting direction.

[0088] The threaded portion allows other devices to be securely attached to the nozzle head. If the threaded portion is located at the feed opening, the corresponding feed line can be safely arranged.

[0089] If the adjusting element has a threaded portion, the movement of the adjusting element within the nozzle head can be adjusted by the engagement of the threaded portion. If the first threaded portion is included in at least a portion of the feed opening, the adjusting element can move at least partially within the feed opening.

[0090] In one embodiment, it may be preferred that the nozzle head is configured such that when fluid is discharged from the cleaning opening and / or pressure balancing opening, the cleaning opening and / or pressure balancing opening rotate about a central axis, wherein, preferably, the rotation is driven by the fluid jet discharged from the cleaning opening and / or pressure balancing opening.

[0091] If the nozzle head rotates, the cleaning effect obtained using the nozzle head is particularly good.

[0092] In one embodiment, it may be preferred that the cleaning opening and / or pressure balancing opening are configured such that lines defined by a first and / or second directional vector, preferably all lines, do not intersect lines defined by a third directional vector; and / or,

[0093] It is likely preferred that the cleaning opening and / or pressure balancing opening be configured such that fluid is discharged spirally from the respective opening.

[0094] In one embodiment, it may be preferred that when at least a portion of the fluid is discharged through the cleaning opening and at least a portion of the fluid is discharged through the pressure balancing opening, the nozzle head is configured to include a first end and a second end, wherein there is an overpressure relative to ambient pressure in the first end and the second end, when it is inserted into a glass element, particularly a tubular glass element, for example, with an inner diameter of 0.5 cm to 10 cm, preferably 2 cm, a cylindrical portion of 2 cm to 200 cm and / or a length of 10 cm to 200 cm, preferably 100 cm.

[0095] The present invention solves this problem according to a second aspect by providing a cleaning system that uses a fluid to clean the interior of a glass element, the cleaning system comprising:

[0096] Nozzle head according to the first aspect of the invention or any embodiment described herein; and

[0097] A fluid supply line that connects to the feed opening of the nozzle head.

[0098] Surprisingly, it was discovered that the nozzle head can be used in conjunction with the fluid supply line connected to the nozzle head, thus allowing the corresponding cleaning system to take advantage of all the aforementioned benefits of the nozzle head.

[0099] In one embodiment, the preferred option may be:

[0100] (i) The nozzle head is positioned at one end of the fluid supply line;

[0101] (ii) The nozzle head is integrated with the fluid supply line;

[0102] (iii) The regulating element is supplied by the fluid supply line;

[0103] (iv) The regulating element is integrated with the fluid supply pipeline;

[0104] (v) The supply line has a tubular shape, preferably comprising a pipe; and / or,

[0105] (vi) wherein the length of the fluid supply line or nozzle head and the fluid supply line is 5cm to 100cm, preferably 10cm to 75cm, and more preferably 20cm to 50cm.

[0106] The integrated design of the nozzle head and fluid supply line provides a particularly stable cleaning system and reduces the number of parts.

[0107] The integrated design of the regulating elements and fluid supply lines provides a particularly stable cleaning system and reduces the number of parts.

[0108] For hollow cylindrical glass elements, tubular shapes are particularly preferred.

[0109] In one embodiment, the preferred option may be:

[0110] (i) The cleaning system is configured such that the nozzle head and / or fluid supply line can move back and forth, especially along the central axis of the nozzle head and / or parallel or antiparallel to a second direction and / or a third direction;

[0111] (ii) The cleaning system is configured such that when fluid is discharged from the nozzle, the nozzle and preferably at least a portion of the fluid supply line are located inside the glass element;

[0112] (iii) The cleaning system is configured to clean particles on the glass element by discharging fluid through the nozzle head when the nozzle head is inside the glass element; and / or

[0113] (iv) The cleaning system is configured to clean particles on the glass element, wherein the nozzle head and / or fluid supply line moves in a direction parallel to the second direction and / or the third direction, preferably inside the glass element, while the nozzle head does not discharge fluid; and the nozzle head and / or fluid supply line moves in a direction parallel to the second direction and / or the third direction, preferably out of the glass element, while the nozzle head discharges fluid.

[0114] Movement of the nozzle head and / or fluid supply line allows the nozzle head to be moved into the glass element (e.g., glass tube) in an easy and efficient manner.

[0115] If the nozzle head, along with the fluid supply line, is inside the glass element when fluid is discharged from the nozzle head, it ensures that particles adhering to the end are not blown further into the glass element. Instead, they are blown out of the glass element via the nearby end.

[0116] Therefore, if fluid is discharged from the nozzle head when it is inside the glass element, particles can be intentionally directed directly towards the closer end of the glass element. Furthermore, the direct interaction between the fluid discharged through the cleaning opening and the particles is increased. All of these factors improve the quality of the cleaning process.

[0117] If the nozzle head is moved into the glass element before discharging fluid from the nozzle head and moved back out of the glass element when discharging fluid from the nozzle head, the particles will be effectively removed from the glass element, because it can be said that the particles are moved from the inside to the outside.

[0118] Because the cleaning opening is located close to the inner surface of the glass element, a higher and more constant flow rate can be achieved compared to laminar flow. It should also be noted that the amount of fluid can be significantly reduced using the method of this invention due to the directional interaction between the fluid and the particles. This also reduces noise emissions.

[0119] In one embodiment, the preferred option may be:

[0120] (i) The cleaning system further includes at least one fixing unit, preferably a conveyor belt or roller, for holding the glass element in a fixed position during cleaning;

[0121] (ii) The cleaning system further includes at least one fluid supply device, preferably a tank, recovery facility, or fluid filtration system, for supplying fluid to the nozzle head via a fluid supply line, wherein the fluid supply device supplies fluid, preferably a gas, especially an inert gas such as helium (He), neon (Ne), or argon (Ar), nitrogen, oxygen, carbon dioxide, or air, a liquid, water vapor, or mixtures thereof; and / or,

[0122] (iii) The water content in the fluid supplied to the nozzle head is 10% by mass or less, preferably 1% by mass or less, more preferably 0.1% by mass or less, and even more preferably 0.01% by mass or less.

[0123] Fixed units provide a safe cleaning process.

[0124] For example, rollers can be used to apply pressure to the glass element (e.g., from above). This prevents the glass element (e.g., a tube) from being blown away during the cleaning process.

[0125] The fluid supply device ensures a reliable supply of fluid to the cleaning system.

[0126] The reduced moisture content makes the cleaning process more effective.

[0127] In one embodiment, it may be preferred that the cleaning system is configured to rotate the glass element and / or the nozzle head while discharging fluid from the nozzle head.

[0128] This relative rotation makes the cleaning process particularly efficient. This is because the direct interaction area between the fluid and the glass element surface is increased.

[0129] In one embodiment, it may be preferred that the cleaning system includes a vibrator unit configured to shake the glass element at least from time to time during the cleaning process, particularly at a frequency of 100 to 10000 Hz, preferably 200 to 5000 Hz, more preferably 250 to 4000 Hz and / or an amplitude of 0.1 mm to 10 mm, preferably 0.5 mm to 1 mm, more preferably 0.7 mm to 0.9 mm.

[0130] The vibrator unit makes the cleaning process particularly efficient because the glass element is shaken. This supports the movement of particles combined with fluid.

[0131] For example, shaking might mean applying pulsed vibrations. This provides an effective cleaning method.

[0132] In one embodiment, the preferred option may be:

[0133] (i) The cleaning system is configured to discharge at least one fluid flow through one of the cleaning opening and the pressure balancing opening, preferably all fluid flows through all the cleaning opening and the pressure balancing opening, wherein the flow velocity is between 5 and 100 cm / h. 3 between;

[0134] (ii) The ratio of the maximum outer diameter of the nozzle head to the inner diameter of the glass element is between 0.5 and 0.9;

[0135] (iii) The ratio of the outer diameter of the fluid supply line (especially the outer diameter of the threaded portion) to the inner diameter of the glass element is between 0.2 and 0.9; and / or,

[0136] (iv) The cleaning system is configured to discharge fluid continuously and / or in a pulsed manner through one or more, preferably all, cleaning openings and pressure balancing openings.

[0137] The optimal flow rate provides an effective cleaning process.

[0138] If the difference between the outer diameter of the nozzle head and the inner diameter of the glass element is appropriately selected, the fluid can interact with the particles attached to the glass element (e.g., a glass tube) in a preferred manner.

[0139] Providing fluid in a pulsed manner improves the interaction between the fluid flow and the glass components. Providing fluid in a continuous manner makes the cleaning system easier to implement.

[0140] In one embodiment, it may be preferred that the cleaning system includes a glass element, particularly a tubular glass element, for example, a tubular glass element with an inner diameter of 0.5 cm to 10 cm, preferably 2 cm, a cylindrical portion of 2 cm to 200 cm, and / or a length of 10 cm to 200 cm, preferably 100 cm, comprising a first end and a second end, wherein when at least a portion of the fluid is discharged through the cleaning opening and at least a portion of the fluid is discharged through the pressure balancing opening, the nozzle head is configured to have overpressure relative to the ambient pressure in the first end and the second end.

[0141] The present invention solves this problem according to a third aspect by providing a method for cleaning glass components, preferably by using a nozzle head according to the first aspect of the invention or any embodiment described herein, or by using a cleaning system according to the second aspect of the invention or any embodiment described herein, the method comprising the following steps:

[0142] -Provide glass components;

[0143] - Inserting the nozzle head into the glass element in a specific direction, preferably parallel to a second and / or third direction, while the nozzle head does not discharge fluid; and

[0144] - Fluid is discharged from the nozzle head, preferably while the nozzle head moves in a direction opposite to a particular direction, especially within the glass element.

[0145] Therefore, this invention is based on the discovery that particles can be effectively removed from a glass element if they are blown from the inside to the outside. This process can be effectively achieved by inserting a nozzle head into the glass element without discharging fluid from the nozzle head, and discharging fluid from the nozzle head as it moves inside the glass element.

[0146] In one embodiment, it may be preferred that fluid is discharged from the nozzle head while the nozzle head is moved within the glass element in a third direction until the nozzle head leaves the glass element.

[0147] In one embodiment, it may be preferred that the insertion and discharge steps take ≤1 minute, preferably ≤30 seconds, more preferably ≤15 seconds, more preferably ≤10 seconds, and more preferably ≤5 seconds.

[0148] The present invention solves this problem according to a fourth aspect by providing a glass element comprising a first end, a second end, and a hollow portion, wherein the hollow portion comprises:

[0149] i) A first end portion including a first end of a glass element;

[0150] ii) the middle part; and

[0151] iii) The second end portion, including the second end of the glass element;

[0152] Each part has an inner surface and an outer surface, and all parts are of equal length.

[0153] Wherein, the ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is 20 or less.

[0154] Therefore, this invention is based on the surprising discovery that glass elements are particularly suitable for containing sensitive substances, such as pharmaceutical compositions, if their surface expansion is limited. The results show that low surface expansion prevents, or at least reduces, the diffusion of substances contained in the glass material into the composition contained by the glass element.

[0155] Surprisingly, controlling the proportion of particles allows for the production of high-quality glass elements particularly well-suited for containing pharmaceutical compositions. The method of this invention makes the production of such high-quality glass elements remarkably easy.

[0156] The determination of relevant particles can be performed according to the following methods:

[0157] In a dark room, the glass element to be examined is illuminated (e.g., with a brightness of 5000 lux). Particles are identified by the diffraction, reflection, or absorption of light. A handheld microscope, such as the "Wide Stand Microscope" from PEAK, can be used to identify the particles. Particles optically identified in this way are clearly marked. Glass elements marked in this way are observed along the surface normal under an optical microscope (e.g., a Zeiss AxioImager M2m) with an LD EC Epiplan 50x / 0.55HD DIC lens and a PI 10x / 2 eyepiece to characterize and measure the length of the particles. In this paper, the size of the particle is related to the maximum size visible in the observation plane (Ferret diameter). Through this type of measurement, it is consciously acknowledged that the maximum longitudinal extent of a three-dimensional particle can also extend along the optical axis of the microscope (i.e., along the normal). In this case, the obtained particle size value is smaller than the actual value of the maximum longitudinal extent of a three-dimensional particle (e.g., a glass particle). It is generally accepted that this method can characterize the size and type of particles with a size of at least 50 μm (i.e., the largest size visible in the observation plane), such as glass, metal, dust, or salt. Optionally, according to this method, particles with a size smaller than 50 μm may not be considered as particles according to the invention described herein.

[0158] Unless otherwise stated, in the context of this application, a glass element may include a first end, a second end, and / or a hollow portion, preferably a cylindrical hollow portion, wherein the hollow portion preferably includes a first end portion containing the first end of the glass element, an intermediate portion, and / or a second end portion containing the second end of the glass element. Each portion may have an inner surface and / or an outer surface. Each of all portions may have an equal length.

[0159] In one embodiment, it may be preferred that the ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is 15 or less, more preferably 10 or less, more preferably 8 or less, more preferably 6 or less, more preferably 4 or less, most preferably 2 or less, and / or 1.0 or more.

[0160] Based on the corresponding optimal ratio, exceptionally high-quality glass components can be obtained.

[0161] In one embodiment, it may be preferred that the number of particles on the inner surface of the first end and / or the second end is ≥0, preferably ≥50, more preferably ≥100, and / or ≤1000, preferably ≤900, more preferably ≤800, more preferably ≤700, more preferably ≤600, more preferably ≤500, more preferably ≤400, more preferably ≤300, more preferably ≤200.

[0162] The inventors discovered that limiting the number of particles improves the quality and safety of glass components. This results in a smooth surface.

[0163] In one embodiment, it may be preferred that the number of particles on the inner surface of the middle portion is ≥0, preferably ≥50, more preferably ≥100, and / or ≤1000, preferably ≤900, more preferably ≤800, more preferably ≤700, more preferably ≤600, more preferably ≤500, more preferably ≤400, more preferably ≤300, more preferably ≤200.

[0164] The inventors discovered that limiting the number of particles improves the quality and safety of glass components. This results in a smooth surface.

[0165] In one embodiment, it may be preferred that: every cm on the inner surface of the first end and / or the second end 2 The average number of particles is ≤10, preferably ≤9, more preferably ≤8, more preferably ≤7, more preferably ≤6, more preferably ≤5, more preferably ≤4, more preferably ≤3, more preferably ≤2, more preferably ≤1, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤10, preferably ≤9, more preferably ≤8, more preferably ≤7, more preferably ≤6, more preferably ≤5, more preferably ≤4, more preferably ≤3, more preferably ≤2, more preferably ≤1.

[0166] The inventors discovered that by limiting the density of the particles, the quality and safety of the glass components can be improved. This allows for the production of smooth surfaces.

[0167] In one embodiment, the preferred option may be:

[0168] (i) the particle size, preferably having a maximum size of 50 μm or more, preferably 60 μm or more, more preferably 70 μm or more, more preferably 80 μm or more, more preferably 90 μm or more, more preferably 100 μm or more, more preferably 110 μm or more, more preferably 120 μm or more, more preferably 130 μm or more, more preferably 140 μm or more, more preferably 150 μm; and / or,

[0169] (ii) The particle size is preferably less than 1000 μm, more preferably less than 900 μm, more preferably less than 800 μm, more preferably less than 700 μm, more preferably less than 600 μm, more preferably less than 500 μm, more preferably less than 400 μm, more preferably less than 300 μm, more preferably less than 200 μm, and more preferably less than 150 μm.

[0170] Surprisingly, only particles of the corresponding size are relevant to evaluating the quality of the glass components. Therefore, addressing only these particles is sufficient, while other particles remain unaffected. This reduces the cost of providing high-quality glass components.

[0171] Those skilled in the art will preferably understand that particles with sizes outside the stated range may still exist on the inner and / or outer surfaces; however, these particles are not taken into account in the ratio. For example, if the particle size is ≥50 μm, there may be no particles or many particles with a size of 2 μm on the inner and / or outer surfaces. But they are irrelevant to the ratio.

[0172] In one embodiment, it may be preferred that the inner surface of the glass element at the first end and / or the second end does not contain any particles with a particle size (preferably its maximum size) ≥1000μm, preferably ≥900μm, more preferably ≥800μm, more preferably ≥700μm, more preferably ≥600μm, more preferably ≥500μm, more preferably ≥400μm, more preferably ≥300μm, more preferably ≥200μm, more preferably ≥150μm, more preferably ≥100μm, more preferably ≥50μm.

[0173] If the size of the particles is limited, high-quality glass components can be easily provided.

[0174] In one embodiment, it may be preferred that the ratio of the number of particles on the inner surface of the first end, the middle portion, the second end and / or any combination thereof to the number of particles on the outer surface of the corresponding portion is between 0.5 and 1.5, preferably between 0.9 and 1.1.

[0175] The results show that if the roughness of the inner and outer surfaces is similar, it is possible to obtain glass components with significantly improved performance. This discovery is based on the fact that similar roughness dramatically increases the strength of glass components.

[0176] In one embodiment, it may be preferred that the particles are inorganic particles and / or selected from glass, metal, dust, salt, and more preferably, the particles are glass.

[0177] Those skilled in the art will preferably understand that, despite this, particles of other materials different from those specified may still be present on the inner and / or outer surfaces; however, these particles are not taken into account in the ratio. For example, if the particles are glass, there may be no salt particles or a great many salt particles present on the inner and / or outer surfaces. But they are irrelevant to the ratio.

[0178] In one embodiment, the length of the hollow portion may preferably be ≥2cm, preferably ≥10cm, more preferably ≥20cm, more preferably ≥30cm, more preferably ≥40cm, more preferably ≥50cm, more preferably ≥110cm, and / or ≤500cm, preferably ≤400cm, more preferably ≤300cm, more preferably ≤200cm, more preferably ≤100cm, more preferably ≤50cm.

[0179] Glass elements of appropriate length can easily produce surfaces with improved quality.

[0180] In one embodiment, it may be preferred that the outer diameter of the hollow portion is ≥3mm, preferably ≥4mm, more preferably ≥5mm, more preferably ≥6mm, more preferably ≥7mm, more preferably ≥8mm, more preferably ≥9mm, more preferably ≥10mm, more preferably ≥15mm, more preferably ≥20mm, and / or ≤20cm, preferably ≤15cm, more preferably ≤10cm, more preferably ≤5cm, more preferably ≤4cm, more preferably ≤3cm, more preferably ≤2cm.

[0181] Glass components with the appropriate diameter can be easily manufactured.

[0182] In one embodiment, the preferred option may be:

[0183] (i) The hollow portion is at least partially designed as a hollow cylindrical portion;

[0184] (ii) The glass element is a glass tube; and / or,

[0185] (iii) The glass element comprises, preferably, borosilicate glass, soda-lime glass or aluminosilicate glass.

[0186] If the glass element is made of the appropriate glass material, it can be used in a variety of situations.

[0187] High-quality glass tubes are of particular interest.

[0188] In one embodiment, it may be preferred that: the first end of the glass element is an open end, in particular the inner cavity of the glass element is in fluid communication with the environment of the glass element through the first end of the glass element; and / or the second end of the glass element is an open end, in particular the inner cavity of the glass element is in fluid communication with the environment of the glass element through the second end of the glass element.

[0189] Glass elements with one or more open ends make it easy to enter and exit the cavity.

[0190] In one embodiment, it may be preferred that the first end of the glass element is a closed end and / or the second end of the glass element is a closed end.

[0191] Glass elements with one or more closed ends are preferred as they can reduce or even prevent further contamination.

[0192] In one embodiment, it may be preferred that the glass element is produced by or can be produced using the Danner and / or Vello processes.

[0193] This makes the manufacturing process both inexpensive and efficient.

[0194] In one embodiment, it may be preferred that the glass element has been cut to a certain length from a long, particularly continuous, glass tube bundle, preferably by slicing and / or breaking.

[0195] Producing glass tube bundles and making them into smaller segments to obtain glass elements of appropriate length is both inexpensive and easy.

[0196] In one embodiment, it may be preferred that the glass element has been cleaned by at least one airflow applied at least partially to its inner and / or outer surfaces, such that at least some particles located on the respective surfaces are blown off the surface / or discharged from the cavity; and / or the airflow moves relative to the middle portion of the glass element to a first or second end of the glass element.

[0197] If the glass components are properly cleaned, their quality is particularly high.

[0198] In one embodiment, it may be preferred that the glass element is shaken during the cleaning process, especially at a frequency of 100 to 10000 Hz, preferably 200 to 5000 Hz, more preferably 250 to 4000 Hz and / or an amplitude of 0.1 mm to 10 mm, preferably 0.5 mm to 1 mm, more preferably 0.7 mm to 0.9 mm.

[0199] Mechanical shaking of glass components can produce glass components that are particularly free of particles, or these particles may detach spontaneously from the surface (e.g., the inner or outer surface of the glass component) at some later time. This increases safety.

[0200] In one embodiment, it may be preferred that the glass elements be cleaned before reheating and / or after being cut (preferably by scratching and / or breaking) from a longer, particularly continuous, glass tube bundle.

[0201] This ensures the removal of loose particles, preventing them from being heated and subsequently permanently adhering to the surface. Therefore, the quality of the glass components is improved.

[0202] A glass element, such as the glass element of the fourth aspect of the invention or any embodiment described herein, is proposed that has been cleaned by a method according to the third aspect of the invention or any embodiment described herein and / or can be obtained by a method according to the third aspect of the invention or any embodiment described herein, cleaned by a nozzle head according to the first aspect of the invention or any embodiment described herein, and / or cleaned by a cleaning system according to the second aspect of the invention or any embodiment described herein.

[0203] The present invention solves this problem according to a fifth aspect by providing a glass element bundle comprising a plurality, preferably between 2 and 500, preferably between 50 and 200 glass elements according to a fourth aspect of the invention or any embodiment described herein.

[0204] Having a high-quality bundle of glass components ensures the quality of a large number of different glass components, which is impossible to achieve by other means.

[0205] In this document, a bundle can be a trading unit, loading unit, or packaging unit for distributing glass elements, preferably an empty pharmaceutical cylindrical container, i.e., a pharmaceutical cylindrical container filled with gas (e.g., air). For example, products of the same kind are often (but not necessarily) bundled together when ordered together in retail or bundled in logistics. According to the invention, the glass elements in the bundle can be separated by spacers such as plastic or cardboard so that they do not come into direct contact with each other during transport. Usually, but not necessarily, the bundle is at least partially covered with plastic foil. Preferably, a bundle contains 5 to 5000, more preferably 10 to 1000, more preferably 25 to 500, more preferably 50 to 300, and most preferably 75 to 250 glass elements. An example of a bundle is from SCHOTT AG. For economic reasons, the bundle preferably comprises 25 to 500, more preferably 50 to 300, and most preferably 75 to 250 glass elements, which are at least partially covered by plastic foil, and wherein the glass elements are in direct contact with each other within the bundle. Preferably, the length of the hollow portion, preferably the length of the hollow cylindrical portion of the glass element in the bundle, is ≥2 cm, preferably ≥10 cm, more preferably ≥20 cm, more preferably ≥30 cm, more preferably ≥40 cm, more preferably ≥50 cm, more preferably ≥100 cm, and / or ≤500 cm, preferably ≤400 cm, more preferably ≤300 cm, more preferably ≤200 cm, more preferably ≤100 cm, more preferably ≤50 cm.

[0206] In one embodiment, it may be preferred that the bundle is at least partially wrapped in foil.

[0207] The foil can prevent the glass components from becoming further contaminated.

[0208] In one embodiment, it may be preferred that at least some of the glass elements, preferably all the glass elements, are separated by at least one spacer element, and preferably the multiple spacer elements are kept at a certain distance from each other.

[0209] Spacer elements prevent damage to the glass components. This allows for safe operation of the bundle.

[0210] In one embodiment, it may be preferred that at least some of the glass elements, preferably all of the glass elements, are in direct contact with each other.

[0211] Direct contact can reduce vibration of the glass components, thus allowing for safer operation of the beam. Attached Figure Description

[0212] Various aspects of the invention will become apparent to those skilled in the art when read with reference to the accompanying drawings, and will be understood from the following detailed description of preferred embodiments, wherein...

[0213] Figure 1 A cross-sectional view of a nozzle head in a first state according to a first aspect of the invention is shown;

[0214] Figure 2 It shows Figure 1 A cross-sectional view of the nozzle head in its second state;

[0215] Figure 3 A perspective view of a first embodiment of a cleaning system according to a second aspect of the present invention is shown;

[0216] Figure 4a A perspective view of a second embodiment of a cleaning system according to a second aspect of the present invention in an assembled state is shown;

[0217] Figure 4b It shows Figure 4a A perspective view of the cleaning system in a disassembled state;

[0218] Figure 5 A perspective view of a third embodiment of a cleaning system according to a second aspect of the present invention is shown;

[0219] Figure 6 A perspective view of a fourth embodiment of a cleaning system according to a second aspect of the present invention is shown;

[0220] Figure 7 Illustrations illustrating how the cleaning system according to a second aspect of the invention can clean the interior of a glass element with fluid; and

[0221] Figure 8 It shows Figure 7 An alternative to the diagram. Detailed Implementation

[0222] Figure 1 A cross-sectional view of the nozzle head 1 in a first state according to a first aspect of the present invention is shown.

[0223] Nozzle head 1 is adapted to clean the interior of a glass element with fluid 3. Fluid 3 is indicated by an arrow.

[0224] Nozzle head 1 includes a plurality of cleaning openings 5 ​​for discharging at least a portion of the fluid (two of which are in...) Figure 1 (As shown in the diagram). Each cleaning opening 5 points to a first direction R1. Since each of the plurality of cleaning openings 5 ​​points to a separate first direction, there are as many first directions as there are cleaning openings.

[0225] The nozzle head 1 includes a pressure balancing opening 7 for discharging at least a portion of the fluid 3 and pointing in a second direction R2. The pressure balancing opening 7 is arranged concentrically about the central axis A of the nozzle head 1.

[0226] The two half-spaces, namely the first half-space H1 and the second half-space H2, are separated by a plane P perpendicular to the central axis A.

[0227] Each of the first direction vectors in the first direction R1 points away from the second half-space H2. The second direction vector in the second direction R2 points away from the first half-space H1.

[0228] The nozzle head also includes a feed opening 9 for supplying fluid 3 to the nozzle head 1. The feed opening 9 is arranged concentrically about the central axis A of the nozzle head 1. The feed opening 9 is oriented along a third direction R3. The third direction vector of the third direction R3 points away from the second half-space H2, and the third direction vector is antiparallel to the second direction R2.

[0229] More precisely, the nozzle head 1 includes a single feed opening 9 and a single pressure equalization opening 7, and the single feed opening 9 is disposed opposite to the single pressure equalization opening 7 along the central axis A.

[0230] The nozzle head 1 includes a supply channel 11 for supplying fluid 3 from the feed opening 9 to the pressure balancing opening 7 and the cleaning opening 5. All pressure balancing openings and cleaning openings are in fluid communication with each other through the supply channel 11.

[0231] The nozzle head 1 also includes an adjusting element 13 for adjusting a third ratio of the fluid volume supplied to all cleaning openings 5 ​​and pressure balancing openings 7.

[0232] The adjusting element 13 includes a dose ring. The adjusting element 13 is at least partially disposed within the nozzle head 1. The adjusting element 13 is movable within the nozzle head 1 along an adjusting direction parallel to the central axis A. Therefore, the third ratio is adjusted by, or can be adjusted by, moving the adjusting element 13 along the adjusting direction.

[0233] The nozzle head 1 also includes a fixing element 15 for securing the adjusting element 13 in a specific position, particularly for preventing movement along the adjusting direction. The fixing element 15 may be a lock nut.

[0234] The nozzle head 1 includes a first threaded portion 17. The first threaded portion 17 is at least partially included in the feed opening 9. The adjusting element 13 includes a second threaded portion 19 that mates with the first threaded portion 17 of the feed opening 9. This engagement allows the adjusting element 15 to move along the adjusting direction. Of course, the retaining element 15 must be released during the movement.

[0235] Figure 2 It shows Figure 1 A cross-sectional view of the nozzle head in its second state.

[0236] In this second state, the third ratio has been adjusted by moving along the adjustment direction (i.e., in...). Figure 1 and 2 Adjust by moving the adjustment element 13 from center to left. For example, in... Figure 2 Each cleaning opening 5 in the diagram has only one arrow as indicated (and...). Figure 1 Compared to the first state, less fluid 3 is supplied to the feed opening 9 through the cleaning opening in the second state. The third ratio is adjusted by substantially reducing the cross-section of each cleaning opening through the adjusting element 13.

[0237] Figure 3 A cross-sectional view of a first embodiment of a cleaning system 100 according to a second aspect of the present invention is shown.

[0238] The cleaning system 100 includes a nozzle head 101. The nozzle head 101 can be as described above. Figure 1 and Figure 2 The nozzle head 1 is described. Therefore, for the same structural features as nozzle head 101, the same reference numerals as those for nozzle head 1 are used, but the value is increased by 100. Furthermore, for all aspects of nozzle head 101, please refer to the above combination. Figure 1 and Figure 2 Description provided for nozzle head 1.

[0239] The cleaning system 100 also includes a fluid supply line 121, which is connected to the feed opening 109 of the nozzle head 101. In fact, the regulating element 113 is integrated with the fluid supply line 121.

[0240] Figure 4a and Figure 4b A perspective view of a second embodiment of a cleaning system 200 according to a second aspect of the present invention is shown in both assembled and disassembled states.

[0241] In fact, the cleaning system 200 is similar to the one mentioned above. Figure 3 The cleaning system 100 is described. Therefore, for the same structural features, the same reference numerals are used, but the number 100 is increased.

[0242] exist Figure 4a The cleaning system 200 shown is in an assembled state. Figure 4b The cleaning system 200 shown is broken down into multiple components. Figure 4b It is evident that the regulating element 213 and the fixing element 215 can be separated from the remaining nozzle head 201. The regulating element is designed as an integral part of the fluid supply line 221.

[0243] Figure 5 A perspective view of a third embodiment of a cleaning system 300 according to a second aspect of the present invention is shown.

[0244] In fact, the cleaning system 300 is similar to the one mentioned above. Figure 3 as well as Figure 4a and Figure 4b Cleaning systems 100 and 200 are described. Therefore, for the same structural features, the same reference numerals are used, but 200 or 100 is enlarged. Furthermore, only the differences between cleaning system 300 and cleaning systems 100 and 200 need to be discussed here; for the rest, please refer to the above combination. Figure 3 as well as Figure 4a and Figure 4b Descriptions of cleaning systems 100 and 200 are provided.

[0245] In the cleaning system 300, the nozzle head 301 is integrated with the fluid supply line 321. Therefore, the nozzle head 301 does not require or have any fixing components. The nozzle head 301 also does not have any adjusting components. Therefore, there is no need for a first threaded portion and a second threaded portion. As a result, the nozzle head 301 and the cleaning system 300 are particularly robust and inexpensive.

[0246] Nozzle heads (such as nozzle head 301 of cleaning system 300) can be manufactured using 3D printing technology. This also enables the design of nozzle heads that are difficult to produce using conventional methods.

[0247] Figure 6 A perspective view of a fourth embodiment of a cleaning system 400 according to a second aspect of the present invention is shown.

[0248] In fact, the cleaning system 400 is similar to the one mentioned above. Figure 3 as well as Figure 4a and Figure 4b Cleaning systems 100 and 200 are described. Therefore, for the same structural features, the same reference numerals are used, but with the numbers 300 or 200 increased. Furthermore, only the differences between cleaning system 400 and cleaning systems 100 and 200 need to be discussed here; for the rest, please refer to the above combination. Figure 3 as well as Figure 4a and Figure 4b Descriptions of cleaning systems 100 and 200 are provided.

[0249] In the cleaning system 400, the nozzle head 401 has no fixing element. This is also possible, for example, when there is sufficient friction between the two threaded portions (in...). Figure 6 Only the second threaded portion 419 is visible in the middle, so that the adjusting element will not move unexpectedly inside the nozzle head.

[0250] Figure 7 The illustration shows a plurality of subsequent time steps T1-T5, illustrating how the cleaning system 500 according to the second aspect of the invention can be used to clean the interior of a glass element 501 with fluid 503.

[0251] For illustrative purposes, only the nozzle head 505 and supply line 507 are shown in the cleaning system 500. The glass element 501 may be a glass tube.

[0252] The cleaning system 500 is configured to clean particles on a glass element by: a nozzle head 505 moving inside the glass element 501 along a fourth direction R4 without discharging fluid (see time steps T1 and T2); and the nozzle head 505 moving out of the glass element 501 along a fifth direction R5 while simultaneously discharging fluid (see time steps T3, T4, and T5). The fourth direction R4 is parallel to the second direction of the nozzle head. The fifth direction R5 is parallel to the third direction of the nozzle head.

[0253] Of course, any cleaning system according to the second aspect of the invention can be configured accordingly, such as any of the cleaning systems 200, 300 and 400 described above.

[0254] Figure 8 It shows Figure 7 An alternative to the illustration is shown here. Two cleaning systems 500a and 500b are used to clean the glass element 501 simultaneously from both ends. Only the last three timing steps are shown. Of course, to clean the center of the glass element 501 precisely, one of the two systems 500a and 500b can be advanced so that the nozzle heads 503a and 503b do not collide with the center of the glass element 501.

[0255] The features disclosed in the specification, drawings, and claims can substantially implement various embodiments of the invention individually or in various combinations. Unless otherwise stated, a preferred embodiment in one aspect, such as a nozzle head, may also be a preferred embodiment in another aspect, such as a method.

[0256] List of reference numerals

[0257] Nozzle heads 1, 101, 201, 301, 401

[0258] 3. 103 fluid

[0259] 5, 105, 205, 305, 405 open-face

[0260] 7, 107, 207, 307, 407 (opening)

[0261] Openings at 9, 109, and 209

[0262] Supply channels 11, 111, and 211

[0263] Adjustment elements 13, 113, and 213

[0264] 15, 115, 215 Fixing elements

[0265] 17, 117, 217 Threaded sections

[0266] 19, 119, 219, 419 Threaded sections

[0267] Fluid supply lines 121, 221, 321, 421

[0268] 100, 200, 300, 400, 500 Cleaning Systems

[0269] 501 Glass Components

[0270] 503, 503a, 503b fluids

[0271] 505, 505a, 505b nozzle heads

[0272] 507, 507a, 507b fluid supply lines

[0273] Axis A

[0274] H1 and H2 half-spaces

[0275] P plane

[0276] R1, R2, R3, R4, R5 directions

[0277] Time steps T1, T2, T3, T4, T5.

Claims

1. A nozzle head for cleaning the interior of a glass element using a fluid, the nozzle head comprising: At least one cleaning opening for discharging at least a portion of the fluid and pointing in a first direction; and At least one pressure-balancing opening for discharging at least a portion of the fluid and pointing in a second direction; The two half-spaces, namely the first half-space and the second half-space, are separated by a plane perpendicular to the central axis of the nozzle head. Wherein, the first direction vector of the first direction points toward the first half-space and / or away from the second half-space; and Wherein, the second direction vector of the second direction points toward the second half-space and / or away from the first half-space, and The nozzle head includes an adjusting element for adjusting a third ratio, which is a mass-to-mass ratio of the fluid volume discharged from all cleaning openings to the fluid volume discharged from all pressure balancing openings. The feed opening is used to supply fluid to the nozzle head and is directed in a third direction, wherein the third direction has a third direction vector.

2. The nozzle head according to claim 1, in, The nozzle head is configured such that a first ratio of the amount of fluid discharged from the pressure balancing opening to the amount of fluid discharged from the cleaning opening is ≥0.2 by mass / mass, when the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 1 to 10 bar. and / or Wherein, the second direction vector is parallel to the central axis, and the first direction vector is neither parallel to nor antiparallel to the central axis; and / or, the angle between the line defined by the first direction vector and the plane perpendicular to the central axis is between 10 degrees and 89 degrees.

3. The nozzle head according to claim 1, in, The nozzle head is configured such that a first ratio of the amount of fluid discharged from the pressure balancing opening to the amount of fluid discharged from the cleaning opening is ≤20 by mass / mass, when the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 1 to 10 bar. and / or Wherein, the second direction vector is parallel to the central axis, and the first direction vector is neither parallel to nor antiparallel to the central axis; and / or, the angle between the line defined by the first direction vector and the plane perpendicular to the central axis is between 10 degrees and 89 degrees.

4. The nozzle head according to claim 2, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 2 to 6 bar, the first ratio is ≥0.5; and / or wherein the included angle is between 20 degrees and 80 degrees.

5. The nozzle head according to claim 3, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 2 to 6 bar, the first ratio is ≤10; and / or the included angle is between 20 degrees and 80 degrees.

6. The nozzle head according to claim 2, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 3 bar, the first ratio is ≥0.9; and / or wherein the included angle is between 30 degrees and 80 degrees.

7. The nozzle head according to claim 3, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 3 bar, the first ratio is ≤5; and / or the included angle is between 30 degrees and 80 degrees.

8. The nozzle head according to claim 2, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 1 to 10 bar, the first ratio is ≥1; and / or the included angle is between 40 degrees and 80 degrees.

9. The nozzle head according to claim 3, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 1 to 10 bar, the first ratio is ≤1; and / or the included angle is between 40 degrees and 80 degrees.

10. The nozzle head according to claim 2, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 1 to 10 bar, the first ratio is ≥1.

5.

11. The nozzle head according to claim 3, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 1 to 10 bar, the first ratio is ≤0.

9.

12. The nozzle head according to claim 3, wherein, When the nozzle head is supplied with fluid through the feed opening at an absolute pressure of 1 to 10 bar, the first ratio is ≤0.

5.

13. The nozzle head according to any one of claims 1-12, in, The second ratio of the cross-sectional area of ​​the pressure balancing opening to the cross-sectional area of ​​the cleaning opening is in mm. 2 / mm 2 The value is ≥0.

2.

14. The nozzle head according to any one of claims 1-12, in, The second ratio of the cross-sectional area of ​​the pressure balancing opening to the cross-sectional area of ​​the cleaning opening is in mm. 2 / mm 2 ≤20.

15. The nozzle head according to claim 13, wherein, The second ratio is ≥0.

5.

16. The nozzle head according to claim 14, wherein, The second ratio is ≤10.

17. The nozzle head according to claim 13, wherein, The second ratio is ≥0.

9.

18. The nozzle head according to claim 14, wherein, The second ratio is ≤5.

19. The nozzle head according to claim 13, wherein, The second ratio is ≥1.

0.

20. The nozzle head according to claim 14, wherein, The second ratio is ≤1.

21. The nozzle head according to claim 13, wherein, The second ratio is ≥1.

5.

22. The nozzle head according to claim 14, wherein, The second ratio is ≤0.

9.

23. The nozzle head according to claim 14, wherein, The second ratio is ≤0.

5.

24. The nozzle head according to any one of claims 1-12, in, The cleaning opening and / or pressure balancing opening are configured such that the line defined by the first direction vector and / or the second direction vector does not intersect the line defined by the third direction vector; and / or The cleaning opening and / or pressure balancing opening are configured such that the fluid is spirally discharged from the respective opening.

25. The nozzle head according to claim 24, wherein, All lines defined by the first direction vector and / or the second direction vector do not intersect lines defined by the third direction vector.

26. A cleaning system that uses a fluid to clean the interior of a glass element, the cleaning system comprising: Nozzle head according to any one of claims 1-25; and A fluid supply line is connected to the feed opening of the nozzle head.

27. The cleaning system according to claim 26, wherein, (i) The cleaning system further includes at least one fixing unit for holding the glass element in a fixed position during cleaning; (ii) The cleaning system further includes at least one fluid supply device, recovery facility, or fluid filtration system for supplying fluid to the nozzle head via the fluid supply line, wherein, The fluid supply device supplies fluid; and / or (iii) The water content in the fluid supplied to the nozzle head is ≤10% by mass.

28. The cleaning system according to claim 27, wherein, The cleaning system also includes at least one conveyor belt or roller for holding the glass element in a fixed position during cleaning.

29. The cleaning system according to claim 27, wherein, The cleaning system also includes at least one tank, recycling facility, or fluid filtration system.

30. The cleaning system according to claim 27, wherein, The fluid supply device supplies gas.

31. The cleaning system according to claim 27, wherein, The fluid supply device supplies rare gases.

32. The cleaning system according to claim 27, wherein, The fluid supply device supplies helium (He), neon (Ne) or argon (Ar), nitrogen, oxygen, carbon dioxide or air, liquid, water vapor or mixtures thereof.

33. The cleaning system according to claim 27, wherein, The water content in the fluid supplied to the nozzle head is ≤1% by mass.

34. The cleaning system according to claim 27, wherein, The water content in the fluid supplied to the nozzle head is ≤0.1% by mass.

35. The cleaning system according to claim 27, wherein, The water content in the fluid supplied to the nozzle head is ≤0.01% by mass.

36. A method for cleaning a glass element using a nozzle head according to any one of claims 1-25 or a cleaning system according to any one of claims 26-35, the method comprising the following steps: -Provide glass components; - The nozzle head is inserted into the glass element in a specific direction, which is parallel to a second direction and / or a third direction, while the nozzle head does not discharge fluid; as well as - The fluid is discharged from the nozzle head while the nozzle head moves within the glass element in a direction opposite to the specific direction.

37. A glass element comprising a first end, a second end, and a hollow portion, wherein, The hollow portion includes: i) A first end portion including the first end of the glass element; ii) the middle part; and iii) A second end portion including the second end of the glass element; Each part has an inner surface and an outer surface, and all parts are of equal length; Wherein, the ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is ≤20, wherein the glass element has been cleaned by the method according to claim 36, by the nozzle head according to any one of claims 1-25, or by the cleaning system according to any one of claims 26-35.

38. The glass element according to claim 37, wherein, The ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is ≤15.

39. The glass element according to claim 37, wherein, The ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is ≥1.

0.

40. The glass element according to claim 38, wherein, The ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is ≤10.

41. The glass element according to claim 38, wherein, The ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is ≤8.

42. The glass element according to claim 38, wherein, The ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is ≤6.

43. The glass element according to claim 38, wherein, The ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is ≤4.

44. The glass element according to claim 38, wherein, The ratio of the number of particles on the inner surface of the first end and / or the second end to the number of particles on the inner surface of the middle portion is ≤2.

45. The glass element according to any one of claims 37-44, wherein The number of particles on the inner surface of the first end and / or the second end is ≥0.

46. ​​The glass element according to any one of claims 37-44, wherein The number of particles on the inner surface of the first end and / or the second end is ≤1000.

47. The glass element according to claim 45, wherein, The number of particles on the inner surface of the first end and / or the second end is ≥50.

48. The glass element according to claim 46, wherein, The number of particles on the inner surface of the first end and / or the second end is ≤900.

49. The glass element according to claim 45, wherein, The number of particles on the inner surface of the first end and / or the second end is ≥100.

50. The glass element according to claim 46, wherein, The number of particles on the inner surface of the first end and / or the second end is ≤800.

51. The glass element according to claim 46, wherein, The number of particles on the inner surface of the first end and / or the second end is ≤700.

52. The glass element according to claim 46, wherein, The number of particles on the inner surface of the first end and / or the second end is ≤600.

53. The glass element according to claim 46, wherein, The number of particles on the inner surface of the first end and / or the second end is ≤500.

54. The glass element according to claim 46, wherein, The number of particles on the inner surface of the first end and / or the second end is ≤400.

55. The glass element according to claim 46, wherein, The number of particles on the inner surface of the first end and / or the second end is ≤300.

56. The glass element according to claim 46, wherein, The number of particles on the inner surface of the first end and / or the second end is ≤200.

57. The glass element according to any one of claims 37-44, wherein, The number of particles on the inner surface of the middle section is ≥0.

58. The glass element according to any one of claims 37-44, wherein, The number of particles on the inner surface of the middle section is ≤1000.

59. The glass element according to any one of claims 37-44, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤10, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤10.

60. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤9, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤9.

61. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤8, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤8.

62. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤7, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤7.

63. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤6, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤6.

64. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤5, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤5.

65. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤4, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤4.

66. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤3, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤3.

67. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤2, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤2.

68. The glass element according to claim 59, wherein, On the inner surface of the first end and / or the second end, every cm 2 The average number of particles is ≤1, and / or per mm on the outer surface of the first end and / or the second end. 2 The number of particles is ≤1.

69. The glass element according to any one of claims 37-44, wherein, Particle size ≥ 50 μm.

70. The glass element according to any one of claims 37-44, wherein, Particle size ≤1000μm.

71. The glass element according to claim 69, wherein, The particle size is its maximum size.

72. The glass element according to claim 69, wherein, The particle size is ≥60μm.

73. The glass element according to claim 70, wherein, The particle size is ≤900μm.

74. The glass element according to claim 69, wherein, The particle size is ≥70μm.

75. The glass element according to claim 70, wherein, The particle size is ≤800μm.

76. The glass element according to claim 69, wherein, The particle size is ≥80μm.

77. The glass element according to claim 70, wherein, The particle size is ≤700μm.

78. The glass element according to claim 69, wherein, The particle size is ≥90μm.

79. The glass element according to claim 70, wherein, The particle size is ≤600μm.

80. The glass element according to claim 69, wherein, The particle size is ≥100μm.

81. The glass element according to claim 70, wherein, The particle size is ≤500μm.

82. The glass element according to claim 69, wherein, The particle size is ≥110μm.

83. The glass element according to claim 70, wherein, The particle size is ≤400μm.

84. The glass element according to claim 69, wherein, The particle size is ≥120μm.

85. The glass element according to claim 70, wherein, The particle size is ≤300μm.

86. The glass element according to claim 69, wherein, The particle size is ≥130μm.

87. The glass element according to claim 70, wherein, The particle size is ≤200μm.

88. The glass element according to claim 69, wherein, The particle size is ≥140μm.

89. The glass element according to claim 70, wherein, The particle size is ≤150μm.

90. The glass element according to claim 69, wherein, The particle size is ≥150μm.

91. The glass element according to any one of claims 37-44, wherein, The glass element does not contain any particles with a diameter ≥1000μm on the inner surface of the first end and / or the second end.

92. The glass element according to claim 91, wherein, The particle size is its maximum size.

93. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥900μm on the inner surface of the first end and / or the second end.

94. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥800μm on the inner surface of the first end and / or the second end.

95. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥700μm on the inner surface of the first end and / or the second end.

96. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥600μm on the inner surface of the first end and / or the second end.

97. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥500μm on the inner surface of the first end and / or the second end.

98. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥400μm on the inner surface of the first end and / or the second end.

99. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥300μm on the inner surface of the first end and / or the second end.

100. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥200μm on the inner surface of the first end and / or the second end.

101. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥150μm on the inner surface of the first end and / or the second end.

102. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥100μm on the inner surface of the first end and / or the second end.

103. The glass element according to claim 91, wherein, The glass element does not contain any particles with a diameter ≥50μm on the inner surface of the first end and / or the second end.

104. The glass element according to any one of claims 37-44, wherein, The ratio of the number of particles on the inner surface of the first end, the middle portion, the second end and / or any combination thereof to the number of particles on the outer surface of the corresponding portion is between 0.5 and 1.

5.

105. The glass element according to claim 104, wherein, The ratio of the number of particles on the inner surface of the first end, the middle portion, the second end and / or any combination thereof to the number of particles on the outer surface of the corresponding portion is between 0.9 and 1.

1.

106. The glass element according to any one of claims 37-44, wherein, The particles are inorganic particles.

107. The glass element according to any one of claims 37-44, wherein, The particles are selected from glass, metal, dust, and salt.

108. The glass element according to any one of claims 37-44, wherein, The particles are glass.

109. The glass element according to any one of claims 37-44, wherein, The length of the hollow part is ≥2 cm.

110. The glass element according to any one of claims 37-44, wherein, The length of the hollow section is ≤500cm.

111. The glass element according to claim 109, wherein, The length of the hollow section is ≥10 cm.

112. The glass element according to claim 110, wherein, The length of the hollow section is ≤400 cm.

113. The glass element according to claim 109, wherein, The length of the hollow section is ≥20 cm.

114. The glass element according to claim 110, wherein, The length of the hollow section is ≤300 cm.

115. The glass element according to claim 109, wherein, The length of the hollow section is ≥30 cm.

116. The glass element according to claim 110, wherein, The length of the hollow section is ≤200 cm.

117. The glass element according to claim 109, wherein, The length of the hollow section is ≥40 cm.

118. The glass element according to claim 110, wherein, The length of the hollow section is ≤100 cm.

119. The glass element according to claim 109, wherein, The length of the hollow section is ≥50 cm.

120. The glass element according to claim 110, wherein, The length of the hollow section is ≤50 cm.

121. The glass element according to claim 109, wherein, The length of the hollow section is ≥110 cm.

122. The glass element according to any one of claims 37-44, wherein, The outer diameter of the hollow part is ≥3 mm.

123. The glass element according to any one of claims 37-44, wherein, The outer diameter of the hollow part is ≤20 cm.

124. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥4 mm.

125. The glass element according to claim 123, wherein, The outer diameter of the hollow part is ≤15 cm.

126. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥5 mm.

127. The glass element according to claim 123, wherein, The outer diameter of the hollow part is ≤10 cm.

128. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥6 mm.

129. The glass element according to claim 123, wherein, The outer diameter of the hollow part is ≤5 cm.

130. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥7 mm.

131. The glass element according to claim 123, wherein, The outer diameter of the hollow part is ≤4 cm.

132. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥8 mm.

133. The glass element according to claim 123, wherein, The outer diameter of the hollow part is ≤3 cm.

134. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥9 mm.

135. The glass element according to claim 123, wherein, The outer diameter of the hollow part is ≤2 cm.

136. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥10 mm.

137. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥15 mm.

138. The glass element according to claim 122, wherein, The outer diameter of the hollow part is ≥20 mm.

139. The glass element according to any one of claims 37-44, wherein, (i) The hollow portion is at least partially designed as a hollow cylindrical portion; (ii) The glass element is a glass tube; and / or (iii) The glass element comprises borosilicate glass, soda-lime glass or aluminosilicate glass, or is made of borosilicate glass, soda-lime glass or aluminosilicate glass.

140. The glass element according to claim 37, wherein, The first end of the glass element is an open end; and / or the second end of the glass element is an open end.

141. The glass element according to claim 37, wherein, The first end of the glass element is a closed end; and / or the second end of the glass element is a closed end.

142. A bundle of glass elements comprising a plurality of glass elements according to any one of claims 37-141.

143. A bundle of glass elements comprising 5 to 5000 glass elements according to any one of claims 37-141.

144. A bundle of glass elements comprising 10 to 1000 glass elements according to any one of claims 37-141.

145. A bundle of glass elements comprising 25 to 500 glass elements according to any one of claims 37-141.

146. A bundle of glass elements comprising 50 to 300 glass elements according to any one of claims 37-141.

147. A bundle of glass elements comprising 75 to 250 glass elements according to any one of claims 37-141.

148. The glass element bundle according to any one of claims 142-147, wherein, The bundle is at least partially wrapped in foil.

149. The glass element bundle according to any one of claims 142-147, wherein, At least some of the glass elements are kept at a certain distance from each other by at least one spacer element.

150. The glass element bundle according to claim 149, wherein, All glass elements in a plurality of glass elements are kept at a certain distance from each other by a plurality of spacer elements.

151. The glass element bundle according to any one of claims 142-147, wherein, At least some of the multiple glass elements are in direct contact with each other.

152. The glass element bundle according to claim 151, wherein, All the glass elements in the multiple glass elements are in direct contact with each other.

Images