Abstract: A laser system according to an example of the present disclosure comprises: a supercontinuum laser that generates light with a visible wavelength; a wavelength selector comprising a filter whose angle is adjustable and configured to filter the wavelength of light incident from the supercontinuum laser to have a wavelength corresponding to the angle of the filter based on the angle of the filter; a compressor configured to compress the pulse width of light incident from the wavelength selector; and, a non-linear crystal configured to convert the wavelength of light incident from the compressor into an ultraviolet wavelength.

Abstract: Provided are a catalyst for olefin polymerization including a hybrid catalyst composition and an olefin-based polymer prepared therefrom. The hybrid metallocene catalyst allows preparation of an olefin polymer having a broad molecular weight distribution and excellent high-speed processability. In addition, an olefin-based polymer prepared in the presence of the hybrid catalyst has a broad molecular weight distribution and excellent high-speed processability.

Abstract: Provided are a method for preparing an olefin-based polymer and an olefin-based polymer produced using the same. The method for preparing an olefin-based polymer according to an exemplary embodiment may adjust processability of the olefin-based polymer produced using the method by a polymerization temperature. In addition, the method for preparing an olefin-based polymer according to the exemplary embodiment may adjust drop impact strength of a finally obtained film by a polymerization temperature.

Abstract: The present invention provides a light source apparatus and method for integrating diffused light with high efficiency using a collimating including an axicon lens, collimating it, tuning the wavelength of desired light, and passing it.

Abstract: The present invention relates to a method for preparing a polyolefin block copolymer, the method comprising: a first step of coordination polymerization of an olefin monomer with a transition metal catalyst in the presence of organozinc; and a second step of continuously adding a diacyl peroxide compound to perform polymerization, and to a polyolefin block copolymer prepared therefrom.

Abstract: A separator cutting apparatus includes: a fixing part configured to fix temporarily the electrode assembly; a cutter supporting part disposed above the fixing part; a cutter part disposed below the cutter supporting part, and configured to cut a separator among the electrode assembly temporarily fixed to the fixing part; and a spring part configured to connect elastically the cutter supporting part and the cutter part to each other, and return the cutter part to an initial position after cutting the separator; the spring part includes a spring bush coupled to a supporting shaft provided in the cutter supporting part and the cutter part, respectively, a spring holder integrally coupled to the spring bush, and a spring that expands and contracts according to the elevation of the cutter part by coupling both ends to the spring holder, and the spring holder and the spring bush are made of a non-metallic material.

Abstract: A hybrid catalyst composition containing a heterogeneous transition metal compound, a catalyst for olefin polymerization containing the heterogeneous transition metal compound, and a method for preparing an olefin-based polymer in which generation of a gel is suppressed using the catalyst are disclosed. The method for preparing an olefin-based polymer can provide an olefin-based polymer in which non-uniformity of the olefin-based polymer, and in particular, generation of a gel is suppressed.

Abstract: An olefin polymer and a preparation method for manufacturing the olefin polymer are disclosed. The olefin polymer has a high melting point and a high crystallization temperature, thus having excellent heat resistance. Therefore, the olefin polymer may be utilized in spout pouches for high-temperature liquid containers, or the like. The olefin polymer may have a density of 0.9 to 0.95 g/cm3, preferably 0.91 to 0.945 g/cm3, and satisfies the following Equations 1a and 2a: 224.02×d?86.257<Tm, and ??[Equation 1a] 219.64×d?95.767<Tc.

Abstract: The present invention relates to an olefin-based polymer, and a method for preparing the same. The olefin-based polymer according to an embodiment of the present invention has a wide molecular weight distribution and thus has excellent processability. Moreover, a relatively large number of short-chain branches are present in high molecular weight components of the olefin-based polymer, and thus the olefin-based polymer has excellent mechanical strength and heat-sealing properties.

Abstract: An olefin-based polymer and a method for preparing the olefin-based polymer are disclosed. The olefin-based polymer has excellent heat-sealing property due to the high proportion of a copolymer, which has many branches and is derived from comonomers. The olefin-based polymer has a density of 0.915 to 0.950 g/cm3, a melt index (I2.16) of 0.5 to 1.5 g/10 min as measured with a load of 2.16 kg at 190° C., and a polydispersity index (Mw/Mn) of 2 to 6.

Abstract: An olefinic polymer and a method for preparing the olefinic polymer are disclosed. The olefinic polymer has excellent melt strength, and thus has excellent bubble stability during blown film molding. The olefinic polymer has (1) a density of 0.9 to 0.95 g/cm3; (2) a melt index (I2.16) of 0.1 to 5.0 g/10 min as measured with a load of 2.16 kg at 190° C.; (3) a ratio between a melt index (I21.6) measured with a load of 21.6 kg and a melt index (I2.16) measured with a load of 2.16 kg at 190° C. (melt flow ratio; MFR) of 20 or more; (4) a melt tension of 55 mN or more at a velocity at break of 350 mm/s; and (5) a maximum velocity at break of 550 mm/s or more.

Abstract: The present invention relates to an olefin-based polymer, a film prepared therefrom, and preparation methods therefor. An olefin-based polymer according to an embodiment of the present invention has excellent processability, and a film prepared therefrom, particularly, a linear low density polyethylene film has excellent mechanical strength and heat sealability, in particular, low-temperature heat sealability.

Abstract: The present invention relates to an olefin-based polymer, a film prepared therefrom, and preparation methods therefor. An olefin-based polymer according to an embodiment of the present invention has excellent processability, and a film prepared therefrom, particularly, a linear low density polyethylene film has excellent mechanical strength, in particular, drop impact strength.

Abstract: The present invention relates to an olefin-based polymer and a method for preparing same. Specifically, the present invention relates to an olefin-based polymer for which processability can be controlled according to a change in density, and a method for preparing same. Processability of the olefin-based polymer according to an embodiment of the present invention can be controlled according to a change in density.

Abstract: The present invention relates to a process for preparing a hybrid catalyst for olefin polymerization, to a hybrid catalyst for olefin polymerization, and to a polyolefin. The supported hybrid metallocene catalyst for olefin polymerization prepared by the process for preparing a supported hybrid metallocene catalyst for olefin polymerization according to an embodiment of the present invention is capable of preparing a polyolefin having a broad molecular weight distribution of bimodal characteristics and being excellent in mechanical strength and processability.

Abstract: A catalyst containing mixed transition metal compounds is disclosed. The catalyst is capable of producing various polyolefins having excellent processability and mechanical properties. A polyolefin prepared using the catalyst and processes for preparing the polyolefin are disclosed. In the preparation process, it is possible to conveniently prepare a catalyst for olefin polymerization including mixed transition metal compounds by readily adjusting the ratio of the transition metal compounds.

Abstract: The present invention relates to an electrode cutting apparatus including a separated foreign matter removal unit capable of immediately removing separated foreign matter generated at the time of electrode cutting through a blow unit and a suction unit configured to be repeatedly operated and stopped according to an electrode cutting operation in order to remove separated foreign matter generated when the electrode cutting apparatus performs electrode cutting.

Abstract: The present invention relates to a polyolefin film and to a process for preparing the same. The polyolefin film, specifically, the linear low-density polyethylene film according to an embodiment of the present invention is readily formed and has excellent mechanical strength and excellent heat seal characteristics.

Abstract: The present invention relates to a polyolefin-polystyrene multi-block copolymer having a structure comprising a polyolefin block and polystyrene blocks bonded to both ends of the polyolefin block, to an organozinc compound for preparing the same, and a method for preparing the polyolefin-polystyrene multi-block copolymer.

Abstract: The present invention relates to a method for preparing a polyolefin block copolymer, the method comprising: a first step of coordination polymerization of an olefin monomer with a transition metal catalyst in the presence of organozinc; and a second step of continuously adding a diacyl peroxide compound to perform polymerization, and to a polyolefin block copolymer prepared therefrom.