Abstract: A beverage container (1) comprises a container body (3) including an opening and a cap (5) to close the opening, the cap (5) or the container body (3) including one or more bayonet threads (57), and the container body (3) or the cap (5) respectively including one or more protrusions (19) arranged to engage with a respective bayonet thread (57) to secure the cap (5) to the container body (3). At least one of the bayonet threads (57) includes one or more stop members arranged to retain the, or each, protrusion (19) substantially fully engaged with the bayonet thread (57) such that the opening is substantially fully closed by the cap (5), until a releasing torque sufficient to overcome the retention is applied to the container.

Abstract: A closure element for bottles includes a stopper that engages in the mouth of a bottle, a head having a larger outside diameter than the stopper, a sealing element arranged in a transition region between stopper and head. The sealing element has a first sealing region which bears against the stopper and comprises at least one outwardly pointing sealing bead. The first sealing region has at least one outwardly pointing projection or at least one annular bead which is arranged at a distance from the annular sealing bead and on that side of the sealing bead which faces away from the head. The projection or at least one annular bead has at least one cutout introduced into the circumferential surface of the bead.

Abstract: A process for transferring patterned non-densely packed interfacial particle films onto substrates by providing a substrate, modifying the substrate so that it is non-water wetting, providing an interfacial film of charged particles, applying a surface modifying procedure to said particles, and applying the interfacial particle film to the modified substrate to thereby form a patterned non-densely packed film on the substrate.

Abstract: A rectifying device comprising a pair of electrodes, and a carrier transporter consisting of one or more of carbon nanotubes provided between the pair of electrodes wherein high frequency response and heat resistance of the carrier transporter are enhanced by differentiating two connection structures such that the barrier level between one electrode and the first interface of the carrier transporter is different from the barrier level between the other electrode and the second interface of the carrier transporter. An electronic circuit employing such a rectifying device and a process for producing the rectifying device are also provided.

Abstract: The present invention provides a production method for a color filter including forming a first colored layer on a support, forming a photoresist layer on the first colored layer, forming an image on the first colored layer by removing the photoresist layer in the form of an image pattern, etching the first colored layer in the form of the image formed in the forming the image by use of a dry etching process that uses a mixed gas in which a fluorine-based gas and oxygen (O2) are mixed at a mixing ratio (fluorine-based gas/O2), by flow rate ratio, in the range of from 2/1 to 8/1, and removing the photoresist layer remaining after the etching.

Abstract: Provided is a substrate preparation method for a micro-electromechanical system (MEMS) fabrication process. The method includes the step of depositing at least four metal layers interspersed with interlayer dielectric (ILD) layers onto a silicon wafer substrate. A passivation layer is deposited onto an outermost metal layer and at least a portion of the passivation layer is masked with a photoresist. A pit is etched through the photoresist in the substrate, said pit having a base and sidewalls. Etching is carried out along an edge of the substrate to expose the last metal layer to define bonding pads. A step of etching is carried out on either side of the pit to expose the outermost metal layer to define electrode portions. The bonding pads are for operatively connecting a microprocessor for controlling a heater element suspended in the pit between the electrode portions.

Abstract: A method and system for fabricating nano-scale structures, such as channels (i.e., nano-channels) or vias (i.e., nano-vias. An open nano-structure, is formed in a substrate. Thereafter, an optional conformal material film may be deposited within and over the nano-structure using a first deposition process condition, and then the open nano-structure is closed off to form a closed nano-structure using a second deposition process condition, including one or more process steps.

Abstract: Methods are provided for manufacturing optical display devices which remove an etch resist and residual post-etch metal in a single step. These methods are particularly useful in the manufacture of LCDs.

Abstract: [Object]To provide a technique capable of avoiding or reducing the adverse influence on the equipment of an atmospheric carrying chamber when a substrate processed by the vacuum process is carried to the atmospheric carrying chamber. [Means for Solving the Problems]In the present invention, a posttreatment chamber for carrying out a posttreatment in an atmospheric atmosphere adjoins a load-lock chamber. Products produced on a substrate are removed by processing the substrate in the posttreatment chamber before the substrate is carried to an atmospheric carrying chamber. A carrying means installed in the said atmospheric carrying chamber caries the substrate to and from the said posttreatment chamber. The said posttreatment chamber and the atmospheric carrying chamber are separated from each other by a partition wall, and the partition wall is provided with an opening having the shape of a slit through which the said carrying means and the substrate can pass.

Abstract: A plasma processing apparatus for processing a specimen placed on a table disposed inside of a processing chamber by using plasmas formed in the processing chamber in which the table is disposed. A first member is placed in contact with the specimen and a second member is disposed below the first member. A temperature control device is disposed inside the table for controlling the temperature of the outer circumferential zone and the central zone of the table to first and second temperatures, respectively. A pressure control device is also provided for controlling pressure between the surface of the table and the specimen.

Abstract: A method for bonding at low or room temperature includes steps of surface cleaning and activation by cleaning or etching. One etching process The method may also include removing by-products of interface polymerization to prevent a reverse polymerization reaction to allow room temperature chemical bonding of materials such as silicon, silicon nitride and SiO2. The surfaces to be bonded are polished to a high degree of smoothness and planarity. VSE may use reactive ion etching or wet etching to slightly etch the surfaces being bonded. The surface roughness and planarity are not degraded and may be enhanced by the VSE process. The etched surfaces may be rinsed in solutions such as ammonium hydroxide or ammonium fluoride to promote the formation of desired bonding species on the surfaces.

Abstract: Arc-resistant box for a switching system (10) in which there are switching elements, such as a switch (11), a disconnector, and/or a plurality of contacts of the switching system. The arc-resistant box comprises a surrounding casing with a number of electrically conductive plate parts (19), and a protective layer (20) for protecting the arc-resistant box from arcs (6) which occur in the box. At least one of the plate parts (19) forms a shield toward a region which is to be protected on the outer side of the box. The protective layer (20) has insulating properties and is only applied to the at least one plate part (19).

Abstract: Metal-clad electrical equipment comprises a metal vessel (4) and an exhaust constituted by an arcing contact support tube (9) and a casing (16) surrounding the support tube (9) and co-operating therewith to define an annular volume (20). At one end, the support tube has an inlet for passing arc gas. Exhaust holes (17) are provided through the casing to allow arc gas to escape into the vessel. The equipment includes a particle trap (22) situated in the exhaust between the arcing contact support tube (9) and the exhaust casing (16).

Abstract: Automated gripping devices and methods for using the gripping devices for handling a work piece in a machining process, for example, an electrical discharge machining (EDM) process, are provided. The gripping devices include at least one movable plate have a jaw that cooperates with a stationary jaw to hold a work piece. The movable plate is guided and supported by rods that pass through bearings in the movable plate and provide stiffness and positioning accuracy to the movable plate. The movable plate may be translated by a lead screw driven by a drive train, for example, a motor-driven belt drive train. The gripping devices may be used to manipulate and position a work piece in any machining process, but are uniquely capable of enhancing the handling of work pieces in the EDM machining process. Methods for handling work pieces are also disclosed.

Abstract: A wire electrode supply device for a wire-cut electric discharge machine that prevents a wire electrode from departing from a wire traveling path using a simple configuration. A wire bobbin is driven in a reverse direction of a wire feed direction by a torque motor to apply tension to the wire electrode. A velocity detector that detects a rotation velocity of the wire bobbin is provided. The wire electrode is laid along the wire traveling path that includes a guide roller, a brake roller, upper and lower guides, and a wire take-up roller, during which, when the wire electrode is fed out from the wire bobbin, if a velocity detected by the velocity detector meets or exceeds a predetermined velocity, the output torque of the torque motor 3 is increased so that inertial force of the wire bobbin causes the wire electrode to slacken, thus preventing the wire electrode from departing from the wire traveling path.

Abstract: Wire bonders and methods of wire-bonding are disclosed herein. In one embodiment, a method includes attaching a wire to a terminal of a microelectronic component and generating an arc between a first electrode and a second electrode to sever the wire at a point at least proximate to the first and second electrodes. In another embodiment, a wire bonder includes a bond head having a capillary, a first electrode and a second electrode each disposed relative to the bond head, and a controller operably coupled to the first and second electrodes. The controller has a computer-readable medium containing instructions to perform the above-mentioned method. It is emphasized that this Abstract is provided to comply with the rules requiring an abstract. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A method and apparatus of forming a shielding gas mixture at a worksite includes providing a first gas in a liquefied state; providing a second gas in a gaseous state; vaporizing the first gas to a gaseous state; and blending the first gas with the second gas to form the shielding gas mixture.

Abstract: A shielding gas for MAG welding wherein a carbon steel solid wire is used for lap fillet welding of a galvanized steel sheet; wherein the shielding gas is a mixed gas composition consisting of 8 to 15% by volume of oxygen, 20 to 30% by volume of carbon dioxide, and residual % by volume of argon.

Abstract: A portable weld stud system is disclosed. An embodiment of the system includes a housing with a power source, which may be four twelve-volt sealed lead-acid batteries with fifty-two amp-hours of capacity. The housing includes a user interface and a set of power terminals that are coupled to the power source via a control module and a control terminal. Leads couple the housing to a weld stud gun and a work surface. A trigger on the weld stud gun allows a user to generate a drawn-arc weld between a weld stud in the weld stud gun and the work surface. The housing may include an active thermal management system and an internal charging system. The housing may further include a recess that may be covered with a removable door and is configured to accept various components such as leads, power cords, weld studs, and/or weld stud guns.

Abstract: A device for controlling the emission of a laser beam in a large laser-carving machine includes a portable controller formed with a switch, and a cable extending between the portable controller and a main unit of the large laser-carving machine. Furthermore, the cable electrically connects the switch with the main unit in such a way that the switch may turn on/off a laser tube provided in the main unit of the large laser-carving machine.

Abstract: Disclosed herein is a laser irradiation apparatus, including: an optical system configured to form laser light of a linear cross section to be irradiated on an irradiation object; and a cutting member having a light blocking portion configured to block the laser light formed in the linear cross section by the optical system to cut the laser light so as to have a predetermined length along a line longitudinal direction; the light blocking portion having a plurality of fins provided on the light blocking portion thereof so as to fetch and absorb the laser light.

Abstract: The present invention relates to a soldering method and the like comprising a structure for making it possible to solder microsize objects to each other. The soldering method is a method realizing the soldering by using a fiber laser apparatus capable of minutely adjusting the spot size of outputted laser light, and prepares the fiber laser apparatus and a spatial optical system before soldering the objects. The fiber laser apparatus includes an amplification optical fiber having a single core structure and outputting amplified single-mode light, and a seed light source supplying seed light to the amplification optical fiber. The spatial optical system includes a collimator collimating the outputted laser light from the fiber laser apparatus, and a condenser lens converging the outputted laser light transmitted through the collimator to solder which is set.

Abstract: A via hole machining method for forming via holes, reaching bonding pads, in a wafer having a plurality of devices which are formed on a face side of a substrate and are provided with the bonding pads, by irradiation with a pulsed laser beam from a back side of the substrate, wherein the energy density per pulse of the pulsed laser beam is set at such a value that ablation of the substrate will occur but ablation of the bonding pad will not occur, and the time interval of pulses of the pulsed laser beam is set at a value of not less than 150 microseconds.

Abstract: In a method for processing brittle material, a laser light from a laser light source irradiates the brittle material and transports an irradiating position of the laser light along a predetermined line, wherein the laser light L from a plurality of laser light sources 11, 12 . . . m1, m2 . . . mn is irradiated simultaneously onto the surface of the brittle material W, and an irradiating range of the laser light, which is set to a predetermined shape, is moved over the surface of the brittle material. Furthermore, a plurality of optical wave guides 10 . . . 10 that guide the laser light from the laser light sources 11, 12 . . . m1, m2 . . . mn to the brittle material are provided, and composite laser light L irradiates the surface of the brittle material, with these optical wave guides 10 . . . 10 bundled together.

Abstract: An exemplary method for laser machining is provided comprising: providing a workpiece, the workpiece including a predetermined machining region; loading the workpiece onto a laser machining station, the laser machining station being configured for providing an initial ambient temperature for the workpiece; heating the machining region of the workpiece up to a predetermined temperature between the initial ambient temperature and a melting temperature of a material of the workpiece; and machining the machining region with at least one laser beam. An exemplary apparatus for laser machining is also provided.

Abstract: A laser machining method and a laser machining apparatus by which holes excelling in form accuracy can be machined efficiently are to be provided. A first cylindrical lens and/or a second cylindrical lens to correct any deformation of reflective face of a first mirror and/or a second mirror is arranged on an optical axis of a laser beam, and converging positions of the laser beam for an X-component and for a Y-component are coincident with a point on the optical axis.

Abstract: The invention provides a hardening device with a semiconductor laser oscillator. The laser hardening device 1 has a table 20 rotating around axis C on a bed 10. A hardening head 40 that moves along axis Z is attached to a column 30 moving along axis Y orthogonal to axis C. The hardening head 40 has a semiconductor laser oscillator. A main spindle 50 of the hardening head rotates around axis B, and a laser beam is irradiated from a torch T to subject the surface of a work gripped via a chuck 22 on the table 20 to hardening. A torch automatic changer 100 has a plurality of torches T stored to the outer circumference portion of a rotating magazine, and automatically changes torches on the main spindle 50.

Abstract: The invention provides a torch changer with a large capacity for a flying optics-type laser beam machine. A table 15 of the laser beam machine is fixed, and a laser beam working head 50 moves in three axial directions. A torch changing unit 300 is disposed on a setup station 90 disposed outside the processing area at the end of the table. A torch storing device 100 stores a large number of torch holders 150 supported by forks on the outer side of a chain 130. A torch holder shifter 200 sends out the torch holder 150 positioned at a shift position towards the torch changing unit 300, where the torch attached to the working head 50 is changed.

Abstract: The invention provides a laser processing system in which a heat density accumulated in a base material is computed based on nesting data in order to create an NC program for preventing processing defects. Upon cutting out works W1 through W9 from a base material B1, a nesting area N1 is defined as a sum of the lengths of lines S1 through S4, which is defined as NG1. A laser processing length dimension of the works W1 through W9 is computed by adding the line lengths L1 through L4 and the circumferential length C1 of a round hole and multiplying the result by nine, which is defined as LG1. The heat density HF1 is computed as HF1=LG1/NG1, and the heat density is compared with a parameter set in advance in order to determine a processing order for preventing processing defects by heat and to create a corresponding program.

Abstract: An electric arc welder for producing a weave pattern across a workpiece with a succession of individual weld short runs or bead, each of which has a center portion extending between two transversely spaced edges. The welder comprising a power source, a wire feeder to direct a welding wire through a movable torch to the workpiece and a controller for creating a welding current between the wire and the workpiece. A mechanical device is used to move the torch along the bead and the controller has a program to perform a first weld process while the torch is moving along the center portion and a second weld process when the torch is adjacent the edges, where the first weld process has less heat input than the second weld process.

Abstract: In a hand warmer, a heat dissipating plate is thermally coupled to a heater that is supplied with current by a battery that is accommodated in a case. The battery is a box-shaped rechargeable battery of a box-shaped rechargeable lithium-ion battery or lithium-polymer battery that has flat surfaces opposed to each other. The heater is a heating element that is opposed to the flat surface of the battery. A shielding plate is arranged between the heating element and the flat surface of the battery. The heat dissipating plate that is thermally coupled to the heating element is secured to the case on the surface side of the case. In the hand warmer, the flat surface of the box-shaped rechargeable battery, the shielding plate and the heat dissipating plate are arranged in a stack structure. The heat dissipating plate is heated by the heating element.

Abstract: The invention relates to a heating assembly (1) comprising at least one PCT element, in particular for a motor vehicle, said PCT element (2) being located between two contact sheets (3, 4), which are used to make electrical contact. According to the invention, the heating assembly (1) comprises a frame (7) and at least one of the two contact outside the frame (7), said staggered section of the projecting part (10) of the contact sheet (3) running parallel with the remaining part (11) of said sheet (3).

Abstract: The invention provides a heat-transfer-medium heating apparatus using a PTC heater and a vehicular air-conditioning apparatus using such a heating apparatus, which have superior heat-conducting properties and ease of assembly, which can improve the heating capacity, and which can ensure sufficient electrical insulation. Included are a PTC heater having a stacked construction in which an electrode plate, an incompressible insulating layer, and a compressible heat-conducting layer are sequentially provided on each side of a PTC element so as to sandwich the PTC element; and heat-transfer-medium circulating boxes, respectively disposed in close contact with the two surfaces of the PTC heater and having circulating channels for the heat-transfer-medium formed therein. The heat transfer medium circulating inside the heat-transfer-medium circulating boxes is heated by radiant heat from the two surfaces of the PTC heater.

Abstract: The hair straightening iron with ionic treatment consists of a pair of arms which articulate in one of their ends and that have, on the opposite end, a pair of plates or lever electrically heated. Said plates are coated with a ceramic crystal material; in one of said arms there is a point which coincides with a hole in the other arm, where there is a mechanical switch for an ionizing circuit, and the outlet of the negative ions produced by it is located in an adjacent position to one of said plates slightly higher than its surface. The ionizing circuit involves a circuit of electric supply composed by a resistor, an indicator diode “LED” and a rectifier diode, electrically bound to a mechanical switch which is connected to a resistor and a parallel composed by a rectifier diode and an indicator diode “LED”, followed by a capacitor in serial form and the whole is connected to the ionizing block.

Abstract: A cook and hold system having an oven, a food warmer and a metallic food tray. The metallic food tray is used in the oven to hold the food products during cooking and then is rapidly transferred to the food warmer for holding. The food warmer has doors that cover the food warmer inlets so as to retain moisture and heat so that the food products are moist and warm when removed from the food warmer. The food tray has a bottom with parallel ribs that provide grill markings on the food products and a trapping of cook byproducts, such as moisture, grease and particles in the bottom spaces along side the ribs. These byproducts help to preserve heat and moisture when the food tray is transferred from the quick cook oven to the food warmer.

Abstract: A cooking appliance for cooking a foodstuff over a period of time including a shell having a heating cavity and a heating element to heat the heating cavity. A container is removably positionable within the heating cavity and includes a food cavity for receiving the foodstuff. A temperature probe is removably insertable into the foodstuff and a controller is mounted to the shell. The controller controls operation of the cooking appliance in a probe mode wherein the temperature probe is inserted into the foodstuff and transmits foodstuff temperatures to the controller for controlling the heating of the foodstuff, a program mode wherein the controller actuates the heating element to heat the container at a temperature for a selected amount of time and subsequently at a lower temperature and a manual mode wherein the controller actuates the heating element to heat the container at a selected temperature.

Abstract: Apparatus and method for inductive heating wherein an internal inductive heating assembly is provided within a bore of a solid article. The heating assembly includes an interior coil inductively coupled to a portion of the article adjacent the bore to inductively heat the article. The heating assembly lacks an internal cooling mechanism and the coil thermally coupled to the adjacent article portion for transmission of heat from the coil to the article.

Abstract: Apparatus and method for inductive heating of a material located in a channel, to modify the state of the material between flowable and nonflowable states. An internal inductive heating assembly is disposed in the material in the channel, and a signal is supplied to the assembly to generate a magnetic flux in at least one of the assembly and the material, the magnetic flux generating inductive heating of the assembly and/or the material. The signal is adjusted to produce a desired rate of temperature cycling of the material in the channel which includes modifying the state of the material between flowable and nonflowble states. In one embodiment, the heating assembly includes an interior coil, an exterior sheath inductively coupled to the coil, a dielectric material disposed between the coil and sheath, a flux concentrator, and a conductor for supplying a signal to the coil to generate the magnetic flux.

Abstract: An instrument is disclosed for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a microwave-transparent reaction vessel with an open mouth, a pressure-resistant seal on the mouth of the vessel, and a needle, portions of which penetrate the seal with a first end of the needle and provide fluid communication into the vessel. A pressure transducer is at the opposite end of the needle and in fluid communication with the interior of the vessel through the needle. The instrument defines a pressure control flow path from a portion of the needle outside of the vessel to a fluid port, the flow path being in communication with the needle, the interior of the vessel and the transducer. A controllable pressure release valve for the flow path is-associated with the port.

Abstract: Disclosed is a plasma generation apparatus, which comprises a microwave generation section adapted to generate a microwave, a gas supply section adapted to supply a gas to be plasmatized, a plasma generation nozzle which is provided with an inner electrode adapted to receive the microwave and an outer electrode concentrically disposed outside the inner electrode, and adapted to plasmatize the gas supplied from the gas supply section thereinto, based on energy of the microwave, and emit the plasmatized gas from a distal end thereof; and an adapter attached to the distal end of the plasma generation nozzle.

Abstract: A method and associated instrument are disclosed for increasing the sequential rate at which a series of microwave assisted chemical reactions that potentially generate high pressure can be carried out. The method includes the steps of opening a pressure-resistant valve on a microwave-transparent pressure-resistant vessel to define a unpressurized pathway through the valve into the vessel, inserting a tube through the pathway in the valve and into the vessel, transferring at least one composition into the vessel through the tube, removing the tube from the vessel and from the pathway in the valve, closing the valve to seal the vessel against pressure release, and exposing the vessel and its contents to microwave radiation.

Abstract: A method for detecting a fire condition in a cooking chamber of a baking oven. The method includes measuring the oxygen concentration in the baking oven and also using an evaluation circuit of an electronic controller to determine the rate of change of the oxygen. The oxygen concentration and the rate of change are compared to predetermined values stored in a memory of the electronic controller. If the oxygen concentration reaches a value smaller than a limit in the range of 15 to 20 percent by volume, and the rate of change of the oxygen concentration exceeds a rate of decrease of about 2.5 percent by volume per 10 seconds, the fire condition is detected. Subsequently an alarm is created and/or at least one of the heat output or air circulation through the oven is reduced.

Abstract: A mechanical fastening device and method to secure a sheet liner assembly defining the walls, doors, roof and/or floor of a freight container. The anchor fastener comprises a helically formed main body having a pointed lead end configured to slice through an intermediate insulation liner of the liner assembly. A drive head is positioned at a second end of the helix to allow the device to be engaged and rotated about its longitudinal axis to drive the helical coil through the sheet liner to become embedded within the insulation liner. The drive head sits against the sheet liner which is urged against the intermediate insulation liner.

Abstract: An extended, box-like, metal, industrial size, rapidly deployable, food, medicine and water container employing an intermodal shipping container, or other similar article of manufacture, for safely and reliably transporting and/or storing relatively large quantities of food, medicine and potable water for a substantial period of time (7+days), useful for such delivery/storage in emergencies, disasters, etc. The container includes a potable water tank and compartments for the storage of food and/or medicine.

Abstract: An LNG storage tank comprises a heat insulating wall on an inner surface of the storage tank, a sealing wall contacting LNG on the heat insulating wall, and a structure to support the sealing wall. The structure comprises an anchor structure, which comprises an anchor member between the inner surface of the storage tank and the sealing wall to secure the sealing wall to the inner surface, and a heat-insulating material around the anchor member. The anchor member is coupled at several portions to the inner surface. The structure provides a simple configuration to the heat insulating wall and the sealing wall, and a simple connection therebetween, enabling convenient construction thereof while increasing sealing reliability. The structure simplifies an assembled structure and a manufacturing process, reducing a construction time of the tank while efficiently relieving stress on the tank.

Abstract: The present invention relates to a paper-breaker wastebin structure, including the barrel body, in which the barrel body includes the barrel wall and the base plate that is movably located at the bottom of the barrel body, the barrel wall is a kind of cloth, leather, plastic or light metal, and has a folding structure.

Abstract: A collapsible basket having a collapsible fabric basket body, a hard bottom board attached to the top surface of the bottom panel of the basket body, and two support open frames formed of a respective metal wire rod and respectively hinged to the top side of the basket body at two sides and attachable to two opposite vertical peripheral panels of the basket body to support the basket body in shape.

Abstract: A container for storing and transporting liquid materials has a container wall and a container opening surrounded by the container wall. A closure element that closes the container opening is provided. An intermediate lid made from plastic material is arranged between the closure element and the container wall and is removable. The intermediate lid has at least over portions thereof a convexly curved cross-section. The intermediate lid has a circumferential collar that is formed as a bead and that is placed onto a fastening projection formed on the container wall.

Abstract: The invention relates to a device for sealing food product containers, in particular drink containers, comprising: a sealing element adapted to engage on a wall of a food product container around a wall opening arranged in the wall, and an operating element adapted to co-act with the sealing element for displacing the sealing element between an opened position leaving the wall opening clear and a closed position sealing the wall opening. The invention also relates to a food product container provided with such a device.

Abstract: An interchangeable container (10) for a system for building a mold body by forming superimposed layers of granular material, the granular material locally and selectively hardened layer by layer, the container including a bottom structure (14) that is displaceable in the interior of the container in a direction in parallel with the container side walls, the container further including at least one spindle drive comprising a vertical screw spindle (20) which is rotatably mounted in a container side of the container (10), and a spindle screw nut (22) on which the bottom structure (14) is supported, such that the bottom structure can be lowered step by step in the interior of the container by means of the spindle drive.