Abstract: Embodiments of the present invention provide a method of manufacturing an eco-friendly biodegradable nonwoven fabric, the method including spinning a biodegradable resin composition to manufacture biodegradable yarns; cooling the biodegradable yarns; and combining the cooled biodegradable yarns to form a biodegradable yarn web, wherein the biodegradable resin composition includes a first biodegradable resin, the first biodegradable resin includes diol, aromatic dicarboxylic acid and aliphatic dicarboxylic acid, and the biodegradable resin composition has a crystallization temperature of 70° C. to 130° C.; a biodegradable yarn; and a biodegradable nonwoven fabric including the biodegradable yarn.

Abstract: Provided are a method of manufacturing a biodegradable nonwoven fabric and a biodegradable nonwoven fabric manufactured by the method. The method includes preparing a biodegradable resin solution including a biodegradable resin composition, which includes a first biodegradable resin, and an organic solvent. The biodegradable resin solution is then spinned by applying a voltage to the biodegradable resin solution. The first biodegradable resin includes diol, aromatic dicarboxylic acid, and aliphatic dicarboxylic acid.

Abstract: The present invention relates to: a biodegradable polyester resin in which a ratio of the number of first repeating units, including first diol residues and aromatic dicarboxylic acid residues, and the number of second repeating units, including second diol residues and aliphatic dicarboxylic acid residues, is 0.2-1.4, and the index of adhesion is 8 or more; and a method for preparing same. A biodegradable polyester film or biodegradable laminate prepared from the biodegradable polyester resin not only has excellent heat resistance compared to the case of using conventionally used biodegradable resins, but also has excellent adhesion to various other substrates as well as the same substrate, and thus can be used in various ways as an eco-friendly biodegradable adhesive product.

Abstract: The present invention relates to a biodegradable polyester resin, a manufacturing method therefor, and a biodegradable polyester film, wherein the biodegradable polyester resin includes: a first repeat unit containing a first diol residue and a residue of aromatic dicarboxylic acid; a second repeat unit containing a second diol residue and a residue of aliphatic dicarboxylic acid residue; and a specific content of a softening agent, composed of a specific ingredient. The biodegradable polyester resin contains the softening agent at a specific content and thus can maximize flexibility while maintaining appropriate mechanical strength, and can satisfy excellent heat resistance and moldability at the same time.

Abstract: Provided is a biodegradable yarn, comprising: a first biodegradable resin composition comprising a first biodegradable resin, wherein the first biodegradable resin includes diol, aromatic dicarboxylic acid and aliphatic dicarboxylic acid, and the first biodegradable resin composition has a melt index of 6 g/10 minutes to 15 g/10 minutes at 190° C. and a crystallization temperature of 40° C. to 85° C.

Abstract: An embodiment relates to a biodegradable polyester resin, a preparation method therefor, and a biodegradable polyester film comprising same, the resin comprising a bio-derived softener, a first repeating unit, which comprises a first diol moiety and an aromatic dicarboxylic acid moiety, and a second repeating unit, which comprises a second diol moiety and an aliphatic dicarboxylic acid moiety. The biodegradable polyester resin comprises the bio-derived softener so as to have excellent environmental friendliness, can have maximized flexibility while maintaining a suitable tensile strength, and can have both excellent heat resistance and formability, and thus can be used in more diverse fields such as those of: packaging materials, garbage bags, mulching film and disposable products; wrap film, industrial stretch film, and formation film, which require high flexibility; building interior material lamination; and uses requiring three-dimensional formation such as 3D molding.

Abstract: Disclosed is an eco-friendly biodegradable polyester resin composition, including: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein an alternating ratio of the polyester resin is 0.3 to 0.7, wherein the alternating ratio is a ratio of a diol, bonded between the aromatic dicarboxylic acid and the aliphatic dicarboxylic acid, among the diol. The diol may include 1,4-butanediol; the aromatic dicarboxylic acid may include terephthalic acid or dimethyl terephthalate; and the aliphatic dicarboxylic acid may include adipic acid. When the biodegradable polyester resin composition is dried at 80° C., placed in a stainless steel mold, and compressed at 210° C. under a pressure of 10 MPa for 3 minutes to produce a polyester sheet having a thickness of 300 ?m, the sheet has a tensile strange range from 40 MPa to 60 MPa, an elongation at break range from 800% to 1100%, and Young's modulus range from 20 MPa to 80 MPa.

Abstract: An eco-friendly biodegradable molded article, including: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein, when continuously irradiated with ultraviolet rays from a UVA 340 ultraviolet light lamp at an intensity of 0.75 W/m2, a tensile strength decrease rate from the beginning of the ultraviolet irradiation to 1 day ranges from 5% to 40%.

Abstract: The present invention relates to a biodegradable polyester resin, in which the first repeat unit comprising a first diol residue and an aromatic dicarboxylic acid residue and the second repeat unit comprising a second diol residue and an aliphatic dicarboxylic acid residue satisfy a ratio of the number of repeat units in a specific range, and the softness index of the resin satisfies a specific range, and to a process for preparing the same. Since the biodegradable polyester resin can provide a biodegradable polyester sheet or film that can be simultaneously enhanced in productivity, processability, and moldability and is excellent in tensile strength, tear strength, and friction coefficient and excellent in biodegradability and water degradability, it can be utilized in more diverse fields.

Abstract: Embodiments relate to a biodegradable and polymerizable polyester composition, to a biodegradable polyester resin prepared therefrom, and to a process for preparing the same. As the biodegradable and polymerizable polyester composition comprises an inorganic filler in a certain content and satisfies a certain range of viscosity, it has excellent dispersibility during polycondensation; thus, it is possible to control the content of metals in a biodegradable polyester resin prepared from the biodegradable polyester polymerization composition and the dispersion index within optimal ranges. In addition, as the biodegradable and polymerizable polyester composition comprising an inorganic filler is subjected to a polycondensation reaction, the dispersibility during the polycondensation reaction is very excellent, which can suppress the aggregation of inorganic filler particles and prevent filter clogging, resulting in a decrease in defects such as voids in the processing process.

Abstract: An eco-friendly biodegradable polyester resin composition includes: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid; and 5000 ppm to 20000 ppm of a hydrophilic regulator having a molecular weight of 400 to 1300.

Abstract: An eco-friendly biodegradable molded article, which includes a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein a biodegradability per hydrolysis degree of the biodegradable molded article is 1.35 or more, wherein the biodegradability per hydrolysis degree is obtained by dividing a biodegradability after nine weeks by a hydrolysis degree after one week, wherein the biodegradability after nine weeks and the hydrolysis degree after one week are measured by a measurement method below.

Abstract: Embodiment herein relate to logic gates. An example of a logic gate includes a semiconductor material, source regions having a first width, drain regions having a second width that is different than the first width, transistor gates, and electrical contacts coupled to the source regions and the drain regions.

Abstract: An eco-friendly biodegradable polyester resin composition includes a polyester resin that includes a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein a biodegradability per aliphatic carboxylic acid is 1.7 or more, the biodegradability per aliphatic carboxylic acid being a value obtained by dividing a biodegradability after 9 weeks by a ratio of the aliphatic dicarboxylic acid to the total dicarboxylic acid, and the biodegradability after 9 weeks being 85% or more.

Abstract: An eco-friendly biodegradable polyester resin composition, including: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein a soft segment ratio of the polyester resin is 0.21 to 0.29, and wherein the soft segment ratio is a ratio of a diol, bonded between the aliphatic dicarboxylic acid and the aliphatic dicarboxylic acid, among the diols.

Abstract: An embodiment of the present invention relates to a biodegradable laminated film capable of improving all of biodegradability, durability, and barrier properties, and to a method for manufacturing the biodegradable laminated film. The laminated film comprises: a substrate layer formed from a biodegradable resin composition; and a barrier layer positioned on at least one side of the substrate layer and formed from a coating composition, wherein the barrier layer includes nanocellulose, and thus has improved barrier properties, such as oxygen permeability and moisture permeability, without a reduction in mechanical properties such as tensile strength and tear strength. Therefore, the biodegradable laminated film according to the embodiment can exhibit excellent properties when used in various fields in which barrier properties are important, such as packaging materials for refrigerated and frozen foods, packaging materials for electronic materials, and medical fluid bags.

Abstract: The embodiments relate to a biodegradable polyester resin, to a process for preparing the same, and to a biodegradable polyester film comprising the same. As the biodegradable polyester resin has a polydispersity index (PDI) and a weight reduction rate satisfying specific ranges, all of the biodegradability, mechanical properties such as tensile strength and impact strength, and thermal resistance can be enhanced. In addition, when the biodegradable polyester resin is used to prepare a film, it is possible to prevent the incident of defects such as fumes, bubbles, and fisheyes, thereby enhancing processability and productivity. Accordingly, the biodegradable polyester resin according to the embodiment can be applied to various fields that require thermal resistance and moldability, such as medical devices or containers, disposable food containers, and the like, so that they would exhibit excellent characteristics.

Abstract: An eco-friendly biodegradable molded article, including: a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein, when continuously irradiated with ultraviolet rays from a UVA 340 ultraviolet light lamp at an intensity of 0.75 W/m2, a tensile strength decrease rate from the beginning of the ultraviolet irradiation to 1 day ranges from 5% to 40%.

Abstract: An eco-friendly biodegradable polyester resin composition includes a polyester resin that includes a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid, wherein the first weight swelling rate of the biodegradable polyester resin composition is 4% to 20%.

Abstract: An eco-friendly biodegradable molded article which includes a polyester resin including a diol, an aromatic dicarboxylic acid and an aliphatic dicarboxylic acid and has a wet hardness reduction rate of 12% to 25%.