TWI404670B - Process and system for the packaging, transport, storage and withdrawal of liquid crystals - Google Patents

Abstract

The method for filling containers with liquid crystals or liquid crystal mixtures comprises partially filling an air- and water vapor impermeable container with the crystals. The air remaining above them is then flushed out with a protective gas and the container is sealed. - Independent claims are included for: - (A) containers for use in the method; - (B) use of the containers in transport and storing liquid crystals and liquid crystal mixtures; and - (C) a system for filling containers with liquid crystals and transport and storage of them.

Description

Method and system for packaging, transporting, storing and removing liquid crystal

This invention relates to a method of packaging and withdrawing liquid crystals (LCs) or liquid crystal mixtures (LCMs) in or from air- and water vapor-tight containers. The invention further relates to a recycling method for packaging, transporting, storing and withdrawing LCs and LCMs in or from a reusable container. The invention is additionally directed to an introduction and retrieval device and system and container for use in this type of method.

Liquid crystals (LCs) are primarily used as dielectrics in electro-optical display devices. For example, LC displays are not only suitable for use in flat-panel screens in television or computer applications (laptops, laptops), but also for smaller area displays, for example, for mobile phones, pocket calculators or in cars or airplanes. Used in displays for structures.

After manufacture, liquid crystal and liquid crystal mixtures (LCMs) are typically packaged in glass bottles having a capacity of 100 milliliters or 500 milliliters for storage or shipping. However, the growing demand for LCMs requires an ever-increasing number of bottles, and due to the fragility of the glass, the amount of packaging material needs to be increased - mainly polystyrene foams and card sheets.

To date, the use of glass bottles is the best compromise, but is associated with many quality-related problems, such as exposure to air, light transmission or ion elution of glass. However, contact with oxygen, moisture or ionic species can significantly impair the quality of LCMs, particularly for their electrical and electro-optical properties, such as specific resistance.

In addition, packaging LCMs in glass bottles is a labor-intensive work step that is highly risk-related. The same applies to the treatment of bottles and LCMs. Take out, for example, in the manufacture of LC displays using such LCMs.

Therefore, the glass bottle used so far may be broken, light-transmitted, and its sealing cover is permeable to oxygen and water vapor, and residual air cannot be removed from the bottle.

In addition, glass bottles and packaging materials known to date can generally only be used once because their cleaning is too complicated. This leads to increased costs and increased environmental pollution.

Accordingly, it is an object of the present invention to provide a system and method for packaging, transporting, storing, and removing LCs and LCMs that avoids or minimizes the disadvantages of containers used to date and that can be packaged in or from the container, The quality of LCs and LCMs during shipping, storage and removal. Another object of the invention is to improve the environmental balance during packaging, shipping, storage and removal of LCs and LCMs.

This object has been achieved according to the invention by the method described below. In this method, a large packaging device made of steel or the like is preferably used in the circulation system, and the device preferably has a capacity of 5 to 200 liters, and is user friendly and quality assured.

To date, LCs have not been stored in steel containers, among other things, since only a small amount of ICs have been packaged. It is generally unknown to date to use the system according to the invention in the LC industry.

The advantages of containers made of high-quality steel or similar materials over the glass bottles used in the LC industry to date are, in particular, impermeability to air and water vapour, opacity to light, no ions dissolved in LCMs, and reduced particle generation. Increase safety during shipping and during LCM user processing. In addition, the use of A relatively large container with a larger capacity has a significantly reduced surface area of the container compared to the amount of LC introduced, which has a beneficial effect on the shelf life and quality assurance of LCs and LCMs.

Moreover, the systems and containers according to the present invention open the possibility for a user or consumer to "live" the LC and LCM products, for example, by changing or modifying the physical and/or chemical properties of the LC product.

By means of the system and container according to the invention, the LC material can additionally be transported directly from the LC manufacturer side to the user side in the sealing system without contact with air or moisture, for example, the LC display can be automatically supplied with the desired LC material. Manufacturing equipment.

This opens up new possibilities for new technologies in the manufacture of LC displays and increases the reliability of the method. In addition, the usability and quality of the LC material can be improved.

The present invention relates to a method of packaging and, if desired, transporting and/or storing liquid crystals (LCs) or liquid crystal mixtures (LCMs), characterized in that the airtight and water-impermeable or water-impermeable containers are at least partially filled with LCs or LCMs. The air present in any residual volume is replaced by a protective gas and the container is sealed.

The invention further relates to the use of the above and below containers for packaging, transporting, storing and removing LCs or LCMs, particularly containers having steel or inner walls of similar surface-performance materials.

The invention further relates to a system or container for packaging, transporting, storing and removing LCs or LCMs as described above and below, characterized in particular by the possibility of preventing or reducing the possibility of contamination of LCs or LCMs, the system or container comprising packaging, The closure is required throughout the cycle of the transport and/or storage and removal steps.

The invention further relates to a packaging and/or retrieval device for use in a method as described above and below.

The invention further relates to a method of packaging, transporting and/or storing and removing LCs and LCMs in or from a reusable container.

The invention further relates to a recycling method for packaging, optionally transporting and/or storing and removing liquid crystals (LCs) or liquid crystal mixtures (LCMs) in or from a reusable container, characterized in that the LCs and LCMs are from the above and below The method of introducing the above and below containers, which are transported and/or stored in the container as needed, partially or completely removed from the container, and the partially or completely emptied containers can be reused or reused for the same or different LCs or LCMs. filling.

The invention further relates to a system for packaging, transporting and/or storing and removing liquid crystals (LCs) or liquid crystal mixtures (LCMs) as needed, comprising means for packaging and/or taking out LCs or LCMs and one or more exchangeable and visual There is a need for a reusable container that can be attached to the package or to a device that takes out LCs or LCMs.

The LCs or LCMs used in the container and system according to the present invention are, for example, a single liquid crystal material or a mixture of a plurality of individual liquid crystal materials and a mixture of a separate liquid crystal material and other non-liquid crystal materials, wherein the mixtures are preferably liquid crystals. . The LCs or LCMs can be used as a pure substance or a mixture of pure substances in the containers and systems according to the invention, and can also be used in the form of solutions, emulsions, dispersions or suspensions.

LCs and LCMs are particularly well packaged, stored, shipped and/or in liquid or isotropic phases in liquid or low viscosity or preferably as a mixture of pure or pure substances. Or take it out. In this connection, "low viscosity" refers to LCs or LCMs having a flow viscosity of <70 centistokes (cSt), preferably <50 centistokes (in each case at 20 ° C).

It is also possible to store LCs or LCMs in a vessel according to the invention in such a way that they are not in a thermodynamic steady state and are in a kinetically resistant state, for example, in a liquid state as an ultra-cooled melt or an ultra-cooled LC phase rather than crystallization. phase. Due to the sealed form of the container and the reduction of particle formation (and thus the risk of crystal nucleation), LCs or LCMs can remain stable for a long period of time in this type of liquid.

In addition, such LCs or LCMs can be packaged, stored, transported, and/or removed, and the LCs or LCMs are normally in a solid or relatively high viscosity state under certain external conditions (eg, atmospheric pressure and room temperature), or by changing the container. These conditions (eg, pressurization or warming) are in a liquid or low viscosity state at or from the container. To this end, in a particularly preferred embodiment of the invention, the container or take-up device has a suitable heating device. This is a further advantage of the system according to the invention over the glass bottles used to date.

The container for the method according to the invention preferably consists of steel or one or more other materials or has an inner wall composed of steel or one or more other materials, wherein the other materials are comparable or superior to steel. Surface properties. The material used in the container should be substantially non-contaminating, non-abrasive, resistant to liquid crystals and aggressive materials, resistant to corrosion or rust, impervious to air, oxygen and water vapor and preferably opaque. Further suitable and preferred materials other than steel are, for example, zirconium or its alloys, enamels, ceramics, alumina or cerium oxide.

Particularly preferred are containers composed of one or more of these preferred materials. However, it is also expedient in principle to use containers made of another material having a coating of one or more of these preferred materials, for example, a plastic container coated with yttria. Or metallized glass containers. These containers may also have a transparent wall which simplifies the monitoring of the filling plane.

It is particularly good to use pressure vessels made of corrosion resistant or stainless steel. It is more preferred to use a container whose inner wall has been treated by a suitable method, for example, an electropolished or acid immersed inner wall having a special coating. For example, examples of such coatings are titanium or titanium-containing alloys or organic coatings applied by vapor deposition, sputtering or other methods, as also used as coatings ("overcoats" in LC display elements). . Applicable overcoat materials are familiar to those skilled in the art.

In contrast to glass bottles, containers according to the present invention have a tendency to reduce particle formation and/or to contaminate ions of LCs or LCMs.

It is particularly preferable to use a pressure vessel made of corrosion-resistant steel having an electropolished or correspondingly treated inner wall.

Other suitable closures, containers and systems are, for example, the instructions DE-A-37 20 939, DE-A-38 15 623, DE-A-42 12 338, EP-A-0 297 372, DE-A-36 36 888, DE-A-36 37 455, DE-A-38 15 623, GB-A-0 847 354, WO 98/02368 A1, WO 99/20535 A1, WO 98/47661 A1, WO 00/36329 A1 WO 00/54635 A1 and WO 00/73154 A2 or similar designs.

However, the use of such containers for LCs or LCMs has not been described so far.

Figures 1 and 2 illustrate and illustrate side views of different embodiments of a suitable and preferred container (10). For example, the container (10) is composed of stainless steel and has a cover (10a) as needed. It has a sealable opening (11) having, for example, a screw or flange closure (12); and two fittings (13) and (14), the fitting having adjustable inlet and outlet valves as needed ( 15), (16), for example, a membrane valve, and optionally a coupling or connector (17), (18), for example, a fastening-fit coupling of a specified design, or having a closure, such as a nut or Flange closure (not shown). In addition, the fitting (14) is attached to the dip tube (19) in one piece or by a suitable coupling member for packaging or taking out LCs or LCMs.

Preferably, the LCs or LCMs are packaged or removed from the container by fittings (14) and dip tubes (19). For example, the fitting (13) is used to introduce a protective gas into the container for pressurizing and/or balancing the pressure during removal of the LCs or LCMs. The opening (11) is used, for example, to clean the container.

The fitting (14) and coupling (17) are preferably manufactured in such a manner that they can be directly connected to a particular package and/or take-up device or to a dispensing device by an LC packager or LC user, as desired. The packaging and removal device should preferably have corresponding counterparts for attachment.

To maintain the number of openings and joints on the container, the fittings (13) and (14) preferably pass through the opening (11) and the closure (12), which represents as little potential source of contamination as possible.

The container of the present invention (10) or more preferably has a dip tube (19), as illustrated in FIGS. 1 and 2 embodiment.

In a particularly preferred embodiment of the invention, the container according to the invention comprises a filled flat display or another measuring device, such as a dip tube, a float switch or a rod detector, which provides information on the contents present or retained in the container. For example, the amount of LC located in the vessel is monitored by a continuous volumetric measurement of the plane in the assay vessel or other suitable method.

In a more preferred embodiment, the container according to the invention is connected to one or more external measuring devices, for example, a scale capable of monitoring the amount of LC in the container.

The metering method can be used to remove a specified amount of LC from the container by the fitting (14), the selected outlet valve (16) and the selected coupling member (18) in combination with a filled flat display, dip detector or scale or another suitable detection device. Or LCM.

In a preferred embodiment, the container according to the invention may be substituted for or in addition to such measuring devices comprising or connected to one or more dispensing or dispensing devices capable of removing a defined amount of material. For example, the dispensing device can be attached to the container by a conduit or a soft or rigid tube, for example, a tube made of fluorinated plastic or a lined hard or hose.

A filled flat display, scale or measuring device that monitors the amount of LC in the container can also be connected to or incorporated into the dispensing device. The amount and/or flow rate of the LC or LCM can also be adjusted or measured by means of the above-described measuring device or dispensing device or using a flow meter or flow regulator. In a more preferred embodiment of the invention, the container is inserted or connected to a system containing one or more dispensing devices and/or measuring devices.

According to a preferred method, the container is cleaned prior to filling, filled with LCs or LCMs, and the residual volume of air is preferably replaced by a protective gas, such as argon or nitrogen, to seal the container and, if appropriate, to the dispensing device.

The LCs or LCMs are preferably degassed in a vessel. For this purpose, a vacuum is applied, followed by a protective gas entry, and this operation is repeated one or more times as needed.

For the removal of the LC, it is preferred to connect the vessel to a protective gas such as nitrogen or argon. It is also possible to pressure balance or fill the container with a protective gas directly during the LC removal by the dispensing device. However, this is preferably carried out by at least one secondary separate opening in the container that is different from the filling or removal opening. A container of this type having two openings is shown, for example, in Figures 1 and 2 . However, the container may also have more than two openings for introducing LC, withdrawing LC, introducing protective gas and/or pressure equalization.

In a more preferred embodiment of the invention, the self-transporting container or permanently mounted container is taken as part of the system according to the invention for removal of LCs or LCMs by pressure, pump or pressure and vacuum.

In a preferred embodiment, the container has one or more specific couplings or connectors (17), (18) and/or one or more inlet or outlet valves (15), (16), and the like. Connected to the filling and/or removal device by the manufacturer, supplier or user of the LCs or LCMs. It is especially good to use a secure-fit coupling that can be closed on both sides.

In a more preferred embodiment of the invention, one or more filters or the like for removing particles, water or water vapor or other contaminants from the LCs or LCMs during introduction into the vessel are installed in the LC filling device and the container between.

In a more preferred embodiment of the invention, one or more filters or the like for removing particles, water, water vapor or other contaminants from the LCs or LCMs during removal from the container are mounted in corresponding ejection openings of the container Between the extraction opening and the dispensing device between the LC extraction device and/or the container.

Such suitable filters are known to those skilled in the art, for example, commercially available membrane filters or cartridge filters. It is also possible to combine a plurality of filters in a single filter device.

Filtration can also be achieved in a peripheral path by a suitable method, for example, a combination of a pump and a filter device. In this case, the LCs or LCMs are pumped out of the container through the filter device and then returned to the container through the closed line and can be removed by the user via additional connections as needed.

The capacity of the container is preferably greater than 0.5 liters, especially at least 1 liter, particularly preferably at least 5 liters, and particularly preferably at least 10 liters. It is better to use a container having a capacity of 10 to 200 liters. Especially 10 to 100 liters, especially 20 to 50 liters. However, containers having a capacity greater than 200 liters can also be used.

Preferably, the container is completely or substantially completely filled with LCs or LCMs, particularly to a level greater than 90% capacity. Any free volume present is preferably filled with a protective gas.

A particularly preferred embodiment of the invention is directed to a system for packaging, transporting and/or storing and removing liquid crystals (LCs) or liquid crystal mixtures (LCMs) as needed, comprising means for packaging and/or removing LCs or LCMs and one or more A container that can be exchanged and reused as needed, the container being connectable to the means for introducing and/or removing LCs or LCMs.

Figures 3 and 4 illustrate and exemplify this type of system. It consists of a device (20) (solid line) and one or more exchangeable containers (for example, container (10) according to Figure 1 or 2 ) (dashed line). The device (20) consists of a receptacle or housing or holder (21) that can be inserted by the exchangeable container (10) and subsequently attached to the lid (22) or to the door if desired. The apparatus (20) additionally includes supply and discharge lines (23a/b) and (24), which may, for example, be hard and soft (as shown in Figure 4) and may be, for example, metal or Pipe made of fluorinated plastic or lining hard or hose wire. Lines (23) and (24) optionally have valves (25a/b) and (26) and are attached to the fitting of the container (10) by suitable couplings or connectors (27) and (28) as needed. Lines (23) and (24) additionally have suitable couplers or connectors (29a/b) and (30) as needed, for example, to facilitate direct connection, for example, to additional fill or take-out stations or to fill-in LC displays. The device is either a secure-fit coupling for connection to, for example, a dispensing device, a protective gas line, or a vacuum pump.

A specified amount of LC or LCM can be introduced into or taken from the vessel (10) by line (24) Out. Other lines (23) are used to degas the LCs or LCMs or to inflate the vessel (10) with a protective gas or for pressure equalization.

The means of monitoring can be taken from the container by the line (24), the selected coupling (28, 30) and the optional outlet valve (26) in combination with a filled flat display, dip detector or scale or another suitable detection device. LC or LCM.

In a preferred embodiment, one or more suitable dispensing devices may be optionally or additionally coupled by coupling (30) to a conduit (24) for withdrawing LC, as described above for container (10) Said.

In the device according to Figure 4 , the protective gas line branches into two separate lines (23a) and (23b), where line (23a) is used for supply and line (23b) is used to evacuate protective gas or Used for pressure balancing (for example, in the direction of the arrow).

In a particular preferred embodiment of the present invention, as shown in FIGS. 3 and 4, for the introduction of the LC or removed during a purification filter or a filter or a plurality of LCs or LCMs means (31) as described above for the container (10 The connections are made in the line (24) (here, the filter installation should be considered for the respective flow directions of the LC material during LC withdrawal or LC introduction). The gas line (23a/b) also contains one or more filters as needed.

In a more particular embodiment of the invention, the shell or receiver (21) as shown in Figure 4, having a means for leak detection of (32).

In this embodiment, the LC device (20) or container (10) as shown in FIGS. 3 and 4, mounted in the scale (33), which facilitates regular monitoring of the vessel (10) in a more highly preferred embodiment of the present invention The amount.

The device (20) can have a stationary or mobile design. Thus, in a preferred embodiment, as shown in FIG. 3 and the device 4 (20) mounted on a movable base (34), e.g., in the form of trolleys design. It is also possible to design the device (20) to be moved directly on rollers, rollers or other suitable aids for movement. The device (20) can thus move between different LC use, manufacturing or storage facilities.

As described above for the container, the amount of LC introduced or withdrawn can be determined, for example, by a scale (33) or other measurement method or by a fill surface display or a fill surface measuring device located directly in or on the container (10). monitor.

In a more preferred embodiment of the invention, the system and/or container has a heating device. As noted above, this allows LCs or LCMs to be more easily introduced or removed after warming to a liquid or relatively low viscosity state.

To facilitate automated processing and communication with the combined apparatus and automated operation, the above described lines, valves, filled flat displays, measuring devices and/or dispensing devices of containers and systems in accordance with the present invention have suitable control systems and operating elements as desired.

The device (20) and the exchangeable container (10) preferably form a closed system. The device (20) is maintained on the one hand at the LC manufacturer or the LC supplier and/or on the other hand at the LC user, for example the LC display manufacturer, while the available containers (10) are exchanged with the same or different containers and are here Transport between places.

In a preferred embodiment, the means for introducing LC (20) is directly connected to the manufacturing equipment or storage tank of the LCs or LCMs. In a more preferred embodiment, the device (20) is used for LC removal, directly connected to the manufacturing device of the LC display or to a suitable device or unit for filling the LC display, for example, for connection to the ODF method described below. Device. This allows LCs or LCMs to be transported directly from the LC manufacturing plant side to the user side in a closed system without contact with air or moisture. Thus, the system according to the present invention is capable of, for example, automatically feeding a manufacturing apparatus for an LC display with LCs or LCMs.

When it is necessary to disassemble or repair, clean or reuse, empty containers can be returned to the LC supplier or manufacturer, thus creating a waste system that is not wasted.

The system according to the invention having the device (20) and the corresponding container (10) or series of corresponding containers (10) is preferably used in each case only for one particular type of LC or LCM.

This means that after using the system, it is not necessary to remove LCs or LCMs from the lines and fittings of the device (20) and the vessel (10), thus eliminating the time and cost of cleaning the pipeline and reducing the consumption of expensive LC materials. This is a further advantage of the container and system according to the invention from the point of view of both economy and ecology.

Particularly for systems using the particular type of LC or LCM described above, it is preferred to provide a container (10) and apparatus (20) having, for example, a particular LC product name or with additional information, for example, composition, technical data, manufacturing date , batch number, safety precautions, hazard signs, materials for handling products, etc. To this end, the container (10) and/or the device (20) preferably have corresponding markings, for example barcodes or labels or other technical devices or signs suitable for this purpose. In a more preferred embodiment, the corresponding line (24) of the device (20) or the corresponding fitting (14) of the container (10) has one or more suitable couplings, closures or coding systems, which may only be correct The key is opened or closed, for example, an electronic, magnetic or mechanically identifiable or authenticated key card or another suitable device for this purpose.

The container and system according to the invention are particularly suitable for use in the field by LC users filling LC displays, in particular for filling LC displays by so-called ODF ("drop drop") methods.

The LC display typically consists of two planar-parallel glass substrate sets to which a transparent electrode layer, an adjustment layer, an optional colored filter, and an optional additional thin layer have been applied. to make. The substrate is held parallel to each other by spacers at a predetermined interval of several micrometers, and is firmly bonded to each other by an adhesive, for example, bonded at the edges. The free gap is filled with LC material. In the manufacture of LC display elements, the so-called capillary filling method or the so-called ODF ("one drop filling") method is usually used. In capillary filling, the LC display elements are integrally prefabricated, and the residual air between the two firmly bonded substrates of the LC display is removed by the application of vacuum, followed by or simultaneously by capillary force to draw the LC material between the two substrates. However, this process can take several hours. In the ODF method, droplets of LC material are applied to a substrate of an LC display that is pre-manufactured but not yet bonded to each other, and then the substrates are bonded to each other. This method is significantly faster than capillary filling.

For example, LCs or LCMs can be applied by the ODF method by mechanical means having a plurality of outlets that can simultaneously apply some drops to the substrate. Thus, the system according to the present invention is preferably designed in such a manner that the system can be directly connected to the corresponding ODF device at the LC display manufacturer site to direct LCs or LCMs from the container directly to the ODF device in the closed system as needed. Or a substrate for an LC display, the container being cleaned, for example, by pre-cleaning with one or more suitable cleaning agents, followed by washing with hot water and one or more cleaning agents, and optionally washing and drying with deionized or demineralized water. It can also be washed alternatively or additionally with organic solvents or other substances.

In addition to use in LCs or LCMs, the methods, systems, devices and containers according to the present invention are also substantially suitable for packaging, transporting, storing, and removing other substances or mixtures of substances, such as high purity chemicals or substances, particularly for air, Oxygen, moisture, ionic impurities, etc., which have increased sensitivity, especially for liquids LC industry.

The methods and systems according to the present invention are also suitable for packaging, transporting, storing, and removing additives or adjuvants or LCs or LCMs precursors mixed with LCs or LCMs. Additives or adjuvants can also be added to the LCs or LCMs already in the container or system according to the invention, for example, at the LC display manufacturer site. This enables a clear improvement in the performance of LCs or LCMs at different stages of packaging, shipping, storage and removal operations. Examples of this type of additive are stabilizers, inhibitors, interfacial actives, plasticizers, wetting agents, dispersing aids, flow control agents, viscosity reducing agents, hydrophobic agents, adhesives, flow agents, antifoaming agents, degassing Or degassing agents, thinners or dyes. The amount of the substance to be mixed can be monitored as described above, for example, by a scale or other measuring device located on the container or system or filled with a flat display.

The LCMs may also be prepared directly from the corresponding precursor (e.g., the individual LC compound and optional additives) in a container or system according to the present invention by sequentially or simultaneously directing a specified amount of such materials into the container. To improve the uniformity of the LCMs, the container may optionally contain suitable means for mixing, such as a blender. One or more movable systems (20) comprising, for example, different individual LC compounds and/or additives may also be connected sequentially or simultaneously to a central static system (20) having a stirrer vessel, the individual substances being in a specified amount The mobile system is transferred to the static system and then mixed.

A plurality of systems (20) containing different or identical LCs or LCMs or additives may also be connected to each other in series or in parallel and/or to one or more central supply lines or systems.

A particularly preferred embodiment according to the invention is the following: - the container has one or more sealable openings, which can have or have one or more specific couplings or connectors that facilitate connection to the packaging or retrieval device used by the LCs or LCMs - the container has one or more The openings can be sealed, such openings can have or have one or more specific couplings or connectors through which a vacuum, overpressure or protective atmosphere is created in the container, - a particular coupling or The connector is a component of the dispensing or dispensing device or comprises one or more dispensing or dispensing devices, the container having one or more sealable openings, the openings being connectable or having one or more facilitating removal of the prescribed amount a delivery or dispensing device for LC or LCM, - the container has one or more dip tubes, - the container has a filled flat display or a filling plane measuring device, - the container, system, dispensing device or supply and / or discharge line has one or a plurality of flow meters or flow regulators for regulating or detecting the amount of LC, the container, system and/or introduction or withdrawal device having one or more filters or filter devices, -LCs or LCMs introduced into the container and/or The container is taken out under a protective atmosphere, the pressure equalization or protective gas entering the container is carried out by one or more separate openings than the openings used to introduce or remove the LCs or LCMs, and the -LCs or LCMs are degassed in the container after filling. - the container is cleaned after removal of the LCs or LCMs - the container has one or more such devices, for example, a heating device, the device Environmental conditions, such as pressure or temperature, can be monitored during LC or LCM packaging, shipping, storage, or retrieval operations, and/or LC properties associated with such operations, such as viscosity or LC phase or aggregation state, can be monitored.

10‧‧‧ Container

10a‧‧ hood

11‧‧‧ Sealable opening

12‧‧‧ Screw or flange closure

13, 14‧‧‧ Accessories

15‧‧‧Inlet valve

16‧‧‧Export valve

17, 18‧‧‧ Couplings or connectors

19‧‧‧ dip tube

20‧‧‧ device

21‧‧‧ Container or enclosure or holder

22‧‧‧ Cover

23a, 23b, 24‧‧‧soft or hard pipelines

25a, 25b, 26‧‧‧ valves

27, 28, 29, 29a, 29b, 30‧‧‧ couplings or connectors

31‧‧‧Filter or filter unit

32‧‧‧Devices for leak monitoring

33‧‧‧ scales or another measuring device

34‧‧‧Removable base

Figure 1 shows a side view of one embodiment of a suitable and preferred container.

Figure 2 shows a side view of one embodiment of a suitable and preferred container.

Figure 3 shows a side view of one embodiment of a system for packaging, transporting and/or storing and removing liquid crystal or liquid crystal mixtures as needed.

Figure 4 shows a side view of one embodiment of a system for packaging, transporting and/or storing and removing liquid crystal or liquid crystal mixtures as needed.

10‧‧‧ Container

20‧‧‧ device

21‧‧‧ Container or enclosure or holder

22‧‧‧ Cover

23, 24‧‧‧soft or hard pipeline

25, 26‧‧‧ valve

27, 28, 29, 30‧‧‧ couplings or connectors

31‧‧‧Filter or filter unit

32‧‧‧Devices for leak monitoring

33‧‧‧ scales or another measuring device

34‧‧‧Removable base

Claims (14)

A method of packaging and transporting and/or storing liquid crystals (LCs) or liquid crystal mixtures (LCMs) as needed, characterized by air and water vapor resistant steel, for packaging, transporting, storing or removing LCs The pressure vessels of the LCMs are at least partially filled with LCs or LCMs, and the air present in any residual volume is replaced by a protective gas as desired, and the pressure vessel is sealed, wherein the pressure vessel has an inner wall of the electropolished steel. The method of claim 1 wherein the pressure vessel has one or more sealable openings that can have or have one or more specific couplings or devices that facilitate attachment or withdrawal to the LCs or LCMs or Connector. The method of claim 1 wherein the pressure vessel has one or more sealable openings connectable to or having one or more specific administration or dispensing devices that facilitate removal of a prescribed amount of LC or LCM. The method of claim 1 wherein the pressure vessel has a capacity of at least 5 liters. The method of claim 1, wherein the pressure vessel has a capacity of 10 to 200 liters. The method of claim 1 wherein the pressure vessel has one or more dip tubes. The method of claim 1, wherein the pressure vessel has a fill surface display or a fill surface detecting device. A method for packaging and taking out liquid crystals, characterized in that LCs or LCMs are composed of corrosion-resistant steel by the method of claim 1 for packaging and transportation. Packed in a pressure vessel for transporting, storing or removing LCs or LCMs, transported and/or stored in the pressure vessel as needed, partially or completely removed from the pressure vessel, and partially or completely emptied of the pressure vessel for reuse or reusability Refill the same or different LCs or LCMs. The method of claim 8, wherein the introducing and/or withdrawing the LCs or the LCMs is carried out under a protective gas atmosphere. The method of claim 8 wherein the pressure vessel is cleaned after removal of the LCs or LCMs. A pressure vessel for packaging, transporting, storing or removing LCs or LCMs, characterized in that the pressure vessel is impermeable to air and water vapor and consists of corrosion-resistant steel, wherein the pressure vessel has an electropolished inner wall. A system for transporting and/or storing and removing liquid crystals (LCs) or liquid crystal mixtures (LCMs) as needed, including means for introducing and/or removing LCs or LCMs and one or more exchangeable and reusable resistant Corrosive steel composition, a pressure vessel for packaging, transporting, storing or removing LCs or LCMs that can be connected to the apparatus for introducing or removing LCs or LCMs, wherein the pressure vessel has an electropolished inner wall. A system according to claim 12, comprising - one or more exchangeable pressure vessels (10) as claimed in claim 11, said vessel having one or more fittings (13), (14), - a device (20), It comprises a receptacle or housing or holder (21) for receiving the exchangeable pressure vessel (10) and, if desired, sealed by one or more doors or covers (22), at least one for introduction or removal Hard or hose line for LCs or LCMs (24) at least one hard or hose line (23a/b) for introducing or discharging air or protective gas or for pressure equalization, with valves (25a/b) and (26) as needed in each case, - one or more couplings or connectors (27) and (28) for fittings (13), (14) connected to the pressure vessel, - one or more for connecting to the gas line, further as needed Add or remove additional couplings or connectors (29a/b) and (30) for the station, LCs or LCMs used to fill the devices used in the LC display, - one or more as needed to purify LCs or LCMs and / Or a filter or filter device (31) or comparable device for supplying air or protective gas, - one or more devices for leak monitoring (32) as needed, - a pressure vessel suitable for monitoring as needed (10) A scale or another measuring device (33) in the amount of LC present or to be removed therefrom, - a removable base (34) or roller securely attached to the device or used to move the device, as desired Other suitable aids. A method of filling an LC display with LCs or LCMs using a system for packaging, transporting and/or storing and removing liquid crystals (LCs) or liquid crystal mixtures (LCMs) as needed, including means for removing LCs or LCMs and/or a plurality of exchangeable, reusable, corrosion-resistant steel, pressure vessel for packaging, transporting, storing or removing LCs or LCMs, the pressure vessel being connectable to the means for removing LCs or LCMs, wherein The pressure vessel has an electropolished inner wall, and wherein the LC display is filled by a drop filling method.