Abstract: According to an aspect of the present disclosure, a cart for optical coherence tomography includes a rotary catheter unit; a main body including a receiving member configured to receive the rotary catheter unit; a mobile unit coupled to a lower part of the main body and configured to move the main body on the ground; and a display unit connected to an upper part of the main body and configured to output information generated by the rotary catheter unit. Wherein the display unit is located inside at least two side surfaces of the main body.

Abstract: A method for manufacturing an electrode for a secondary battery comprises the steps of (a) preparing an electrode sheet comprising a current collector partitioned into a coating portion and a non-coating portion and having an insulating layer laminated on the non-coating portion; and (b) forming an electrode tab by notching the non-coating portion on which the insulating layer is laminated. The notching is performed using a laser having a pulse width of 100 ps to 10?6 ps. An electrode for a secondary battery and an electrode manufacturing system used in the method described above is also provided.

Abstract: An olefin-based polymer and method of making the same is disclosed herein. In some embodiments, the olefin-based polymer has multiple crystallinity and satisfies the following: (1) two or more peaks in a temperature range of ?20° C. to 120° C. when measured by cross-fractionation chromatography (CFC), and T(90)?T(50)<8.0° C., (2) a soluble fraction (SF) of 1 wt % or less at ?20° C. in CFC, (3) 15° C.<elution temperature (Te)<50° C., and Te has a linear correlation with a density (d) of the polymer, and satisfies the following Equation 1, Te=1,220×d?A, wherein 1,031?A?1,039. The olefin-based polymer according to the present invention is an olefin-based polymer having relatively increased the ratio of high crystal regions, and exhibits excellent mechanical properties such as improved tensile strength, tear strength, and flexural modulus.

Abstract: The present invention relates to an olefin-based polymer satisfying conditions as follow: (1) a melt index (MI, 190° C., 2.16 kg load conditions) is from 0.1 g/10 min to 10.0 g/10 min, (2) a density (d) is from 0.860 g/cc to 0.880 g/cc, and (3) T(90)?T(50)?50 and T(95)?T(90)?10 are satisfied when measured by a differential scanning calorimetry precise measurement method (SSA). The olefin-based polymer according to the present invention is a low-density olefin-based polymer introducing a highly crystalline region and showing high mechanical rigidity.

Abstract: The present invention provides a complex that is capable of eluting minerals beneficial to the human body and adjusting the contents of the minerals according to their health functions, and a method for producing the same. Specifically, the present invention provides a composite filter including: a filter impregnated with halite; a filter impregnated with calcite; and a filter impregnated with organic germanium-containing ore powder, wherein the filter impregnated with halite, the filter impregnated with calcite, and the filter impregnated with organic germanium-containing ore powder are sequentially stacked.

Abstract: One embodiment of the present invention provides an electrode sheet processing method comprising the steps of preparing an electrode sheet having an electrode mixture layer disposed on at least one surface of the electrode current collector; removing a part of the electrode mixture layer in the thickness direction by physical processing; and cutting down the region from which the electrode mixture layer of the electrode sheet is removed.

Abstract: A method for preparing an electrode, includes (a) designating a current collector surface into an active material layer-laminated portion and an active material-nonlaminated portion, and attaching a masking tape to the active material-nonlaminated portion; (b) laminating an active material layer on the masking tape-attached current collector; (c) forming a cutting groove on an upper surface of the active material layer along a boundary of the masking tape at the bottom and the active material; and (d) removing the masking tape along the cutting groove to form the active material-nonlaminated portion, and an electrode in which a corner portion where an upper surface of the active material layer and a side wall surface forming a thickness of the active material layer meet is formed in a right-angled shape.

Abstract: The present invention relates to a polypropylene-based composite material having improved physical properties including impact strength at low temperature and at room temperature, flexural strength, flexural modulus, etc., and a method for preparing the same.

Abstract: The present invention relates to an olefin-based copolymer of which soluble fraction at a low temperature has a high weight average molecular weight, and which has high flowability and improved physical properties of hardness, flexural strength, tearing strength, etc., and a method for preparing the same.

Abstract: An electrode sheet notching apparatus includes: a conveying unit comprising a first roller and a second roller for conveying the electrode sheet; a jig unit comprising a jig for supporting the electrode sheet; and a processing unit comprising a laser for processing the electrode sheet. The jig has a slit formed on a surface facing the electrode sheet, and the laser beam, which processed the electrode sheet, moves on a plane coplanar with one surface of the electrode sheet to pass through the slit.

Abstract: A separator cutting device cuts a sheet-shaped separator with which at least one electrode is laminated. The separator cutting device includes a laser generator configured to emit a laser beam, a scanner configured to control an optical path of the laser beam emitted from the laser generator, and an end mirror configured to reflect the laser beam passing through the scanner toward the separator and disposed at a side of the scanner.

Abstract: An arc welding device for a secondary battery according to an embodiment of the present invention includes an upper fixing portion in which a plurality of welding electrode units connected to one pole of a welding power are disposed and a lower fixing portion disposed to face the upper fixing portion with an object to be welded therebetween and connected to the other pole of the welding power. The upper fixing portion includes a first facing surface facing the object to be welded and formed to be concave toward the object to be welded and the lower fixing portion includes a second facing surface facing the first facing face and formed to be convex to correspond to the concave shape of the first facing surface.

Abstract: A seat rail retainer includes a body, among a first rail and a second rail that are disposed to slide straightly respectively in a longitudinal direction, the body being fixed to the first rail, an elastic supporting portion protruding from the body to be elastically pressed by the second rail, and an inserting body inserted into the body to provide an elastic force to the elastic supporting portion.

Abstract: Provided is a vibration isolating apparatus for isolating vibration from being transferred from a vehicle to a seat during idling and traveling. The vibration isolating apparatus provides an isolation structure applied between the upper and lower seat frames for a vehicle. A bearing unit having a low friction characteristic are applied so that horizontal vibration is effectively isolated without an up-and-down motion. A damping unit capable of attenuating the motion and frictional noise is applied.

Abstract: Proposed is a cutting apparatus for a fuel basket accommodating spent nuclear fuel of a heavy water reactor, wherein the apparatus includes a base, a vertical support arranged on one side of the base; a turn table arranged to be reciprocated between one side and an opposite side of the base and be horizontally rotatable on the base; a horizontal support arranged to extend from an upper-end of the vertical support in a horizontal direction toward the turn table; a side-cutting means arranged on the vertical support protruding toward the turn table for cutting a side welding bead of the fuel basket mounted on the turn table; and an upper-cutting means arranged on the horizontal support protruding toward the turn table for cutting an upper welding bead of the fuel basket mounted on the turn table.

Abstract: A notching apparatus relates to a notching apparatus for notching an electrode sheet used in a secondary battery, the notching apparatus including: an ablation laser source unit configured to radiate ablation laser that performs an ablation operation on the electrode sheet; a notching laser source unit configured to radiate notching laser, wherein the notching laser is emitted to the place, in which the ablation operation has been performed by the ablation laser, to notch the electrode sheet; and an integral scanner unit to which the ablation laser radiated from the ablation laser source unit and the notching laser radiated from the notching laser source unit are incident. The integral scanner unit allows the ablation laser and the notching laser to be emitted to positions adjacent to each other on the electrode sheet.

Abstract: A method for manufacturing an electrode includes the steps of (a) laminating an active material layer on the surface of the current collector; and (b) removing a portion of the active material layer by irradiating a laser beam on the surface of the active material layer. Before irradiating the active material layer with a laser beam in step (b), a process of supplying moisture to the active material layer is performed. A system for manufacturing an electrode according to the above method is also provided.

Abstract: It is preferred that the foreign material removal device for notching a secondary battery according to one example of the present invention comprises: a foreign material confirmation part provided so that in a transport path of an electrode film through a notching process, the upper and lower surfaces of the notched electrode pattern are photographed, and a position of a foreign material present in the electrode pattern is calculated based on the photographed image; and a foreign material removal process part provided so that air is sprayed to the position of the foreign material and a vacuum pressure is applied thereto according to the foreign material position information calculated by the foreign material confirmation part.

Abstract: A debris detection apparatus and a debris detection method, capable of easily detecting a metal debris existing on the surface of an inspection target by emitting electromagnetic waves having a wavelength in a far-infrared band toward the inspection target during a battery manufacturing process and then analyzing the characteristics of reflected waves from the surface of the inspection target through a thermal image recorder.

Abstract: A lamination apparatus for a secondary battery comprises a lamination device and a cutting device. The supply unit supplies electrodes disposed on a separation sheet and a bonding unit which bonds the separation sheet and electrodes to manufacture a radical unit sheet. The cutting device cuts the separation sheet of the radical unit sheet to manufacture a radical unit constituted of a separator and the electrodes. The cutting device comprises a transfer conveyor, which transfers the radical unit sheet, a laser cutting unit, which irradiates a laser onto and thereby cuts the separation sheet of the radical unit sheet to manufacture the radical unit, a discharge conveyor, which transfers the radical unit cut by the laser cutting unit, and an adjusting unit which adjusts a speed for cutting the separation sheet passing through the laser cutting unit depending on a spaced distance between the transfer conveyor and the discharge conveyor.