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KR-102963156-B1 - METHOD FOR MANUFACTURING FUNCTIONAL WOMEN'S LEATHER VEST HAVING MULTI-LAYER STRUCTURE THEREOF

KR102963156B1KR 102963156 B1KR102963156 B1KR 102963156B1KR-102963156-B1

Abstract

The present invention relates to a method for manufacturing a functional women's leather vest having a multi-layered structure, and more specifically, to a method for manufacturing a women's leather vest that can improve breathability, thermal insulation, comfort, hygiene, and body fit while maintaining the luxurious appearance and durability of natural leather. The manufacturing method of the present invention comprises: (a) a fabric preparation step of preparing a natural leather fabric for the outer layer, a breathable functional membrane for the middle layer, and an eco-friendly fiber fabric for the inner layer; (b) a pattern cutting step of cutting each of the fabrics according to a women's vest pattern to form an outer layer piece, a middle layer piece, and an inner layer piece; (c) a multilayer lamination step of sequentially laminating the cut pieces to form a multilayer laminate; (d) a bonding step of bonding the layers of the multilayer laminate to form an integrated vest body; and (e) a finishing step of sewing the outer edges of the vest body and attaching accessories to complete a women's leather vest.

Inventors

  • 신재원

Assignees

  • (주)트렌디글로벌

Dates

Publication Date
20260512
Application Date
20251223

Claims (3)

  1. A method for manufacturing a functional women's leather vest having a multi-layered structure, (a) A fabric preparation step for preparing natural leather fabric for the outer layer, a breathable functional membrane for the middle layer, and eco-friendly fiber fabric for the inner layer; (b) A pattern cutting step of cutting the above natural leather fabric for the outer layer, the above breathable functional membrane for the middle layer, and the above eco-friendly fiber fabric for the inner layer according to a women's vest pattern to form an outer layer cut piece, a middle layer cut piece, and an inner layer cut piece; (c) A multilayer stacking step of sequentially stacking the outer skin piece, the intermediate layer piece, and the inner skin piece to form a multilayer laminate; (d) a bonding step of bonding the layers of the above multilayer laminate to form an integrated vest body; and (e) A finishing step of completing the women's leather vest by sewing the outer edges of the vest body and attaching accessories; Includes, The above (d) bonding step is, (d1) A step of dividing the multilayer laminate into a bonding-requiring area including a front center, a side contact portion, a shoulder line connection portion, and a back center, and a non-bonding area including an armpit portion, an upper back portion, and a side portion, wherein the bonding-requiring area is set to 60% to 75% of the total area of the multilayer laminate as 100% and the non-bonding area is set to 25% to 40% of the total area of the multilayer laminate to simultaneously ensure breathability and structural stability; (d2) A step of applying a thermoplastic polyurethane adhesive to the front center and the shoulder line connection portion, and then performing a first bonding by heat-pressing at a temperature of 80°C to 120°C at a pressure of 0.5 kgf/cm² to 1.5 kgf/cm² for 30 to 90 seconds; (d3) A step of performing secondary bonding by applying ultrasonic energy for 0.5 seconds to 2 seconds to the side contact portion using an ultrasonic bonding device under conditions of frequency 20 kHz to 40 kHz, amplitude 10 µm to 30 µm, and bonding pressure 0.3 kgf/cm² to 0.8 kgf/cm², wherein bonding points are arranged in a zigzag pattern at intervals of 20 mm to 40 mm; (d4) a step of applying a water-dispersible polyurethane adhesive to the center of the above-mentioned back and performing a third bonding while maintaining flexibility by applying pressure at a temperature of 40°C to 60°C and a pressure of 0.2 kgf/cm² to 0.5 kgf/cm² for 60 to 180 seconds; and (d5) In the above non-bonded area, the edges of the outer shell piece and the inner shell piece are sewn to prevent interlayer separation, but the intermediate layer piece is not sewn and is maintained in a state where it can move freely between the outer shell piece and the inner shell piece to form an air layer with a thickness of 1 mm to 3 mm, thereby simultaneously ensuring breathability and thermal insulation; A method for manufacturing a functional women's leather vest having a multilayer structure characterized by including
  2. In paragraph 1, The above (a) fabric preparation step is, (a1) As the above natural leather fabric for the outer skin, one or more selected from sheepskin, cowskin, or goatskin are prepared to a thickness of 0.6 mm to 1.2 mm, and a tanning treatment using a vegetable tanning agent is performed on the surface of the natural leather fabric, and 3 to 8 parts by weight of a silicone-based softener containing dimethylsiloxane or polydimethylsiloxane is applied to 100 parts by weight of the natural leather fabric to improve flexibility; (a2) as the above-mentioned breathable functional membrane for the intermediate layer, a polyurethane porous membrane or a polytetrafluoroethylene membrane having a moisture permeability of 5,000 g/m²·24hr or more and a water resistance of 10,000 mmH₂O or more is prepared with a thickness of 0.01 mm to 0.05 mm, wherein a water-dispersible antimicrobial composition comprising 0.1 to 3 parts by weight of silver nanoparticles or copper nanoparticles having an average particle size of 10 nm to 100 nm per 100 parts by weight of the above-mentioned breathable functional membrane is coated on at least one surface of the above-mentioned breathable functional membrane with an attachment amount of 1 g/m² to 5 g/m²; and (a3) As the above-mentioned eco-friendly fiber fabric for inner lining, a knit or woven fabric comprising one or more selected from recycled polyester fiber, Tencel fiber, bamboo fiber, or organic cotton is prepared with a basis weight of 100 g/m² to 200 g/m², wherein 2 to 6 parts by weight of a moisture-wicking agent comprising a polyethylene glycol derivative or a silicone derivative is treated by a padding method with respect to 100 parts by weight of the eco-friendly fiber fabric to absorb the moisture at a pickup rate of 60% to 80%, and then dried to impart sweat absorption and release functions; Includes, A method for manufacturing a functional women's leather vest having a multilayer structure, characterized in that each fabric processed in step (a1), step (a2), and step (a3) undergoes drying and stabilization treatment at a temperature of 60°C to 80°C for at least 24 hours to control the moisture content to 5% by weight or less.
  3. In paragraph 1, The above (b) pattern cutting step is, (b1) A step of designing a women's vest pattern with a chest circumference of 80cm to 95cm, a waist circumference of 60cm to 75cm, and a shoulder width of 36cm to 42cm based on standard body shape data of Korean women, by dividing it into a front panel, a rear panel, and side panels, wherein the front panel is provided with an allowance of 5% to 10% relative to the standard chest circumference size, the rear panel is designed with a left-right symmetrical structure with respect to the back centerline, and the side panels are designed to have a curved shape with a radius of curvature of 80cm to 120cm at the waistline; (b2) A step of cutting the natural leather fabric for the outer shell according to the above women's vest pattern using a laser cutting device, wherein the fiber arrangement direction of the natural leather fabric is arranged parallel to the longitudinal direction of the vest, and forming micro-perforations for promoting ventilation in the armpit area and the upper back area in a grid or zigzag arrangement with a diameter of 0.5 mm to 1.5 mm and a spacing of 5 mm to 10 mm to complete the cut outer shell piece; (b3) A step of forming the intermediate layer cut piece by cutting the breathable functional membrane for the intermediate layer using an ultrasonic cutting device according to the above women's vest pattern, cutting it 3mm to 5mm smaller than the inner edge of the outer shell cut piece so that the breathable functional membrane is not exposed to the outside during interlayer bonding, and removing the breathable functional membrane in an area of 30% to 50% based on the area at the position corresponding to the armpit area and the upper back area to secure an air circulation path; and (b4) A step of cutting the eco-friendly fiber fabric for the inner lining according to the above women's vest pattern, wherein if the eco-friendly fiber fabric is a knit structure, the wale direction is aligned with the horizontal direction of the vest and the course direction is aligned with the vertical direction of the vest to provide horizontal elasticity according to body movement when worn, and the front and side parts are cut to the same size as the outer lining piece, but the underarm area is cut with an allowance 10% to 20% larger in area compared to the outer lining piece to complete the inner lining piece; A method for manufacturing a functional women's leather vest having a multilayer structure characterized by including

Description

Method for manufacturing a functional women's leather vest having a multi-layer structure The present invention relates to a method for manufacturing a functional women's leather vest having a multilayer structure. In general, women's leather vests are widely used not only as a fashion item but also as practical cold-weather clothing. In particular, with the recent trend of the layered look, the demand for leather vests has increased, and there is a growing consumer demand for multifunctional products that can be worn in all four seasons. Conventional women's leather vests were primarily manufactured by cutting and sewing single-layer natural leather. While leather vests produced using this conventional technology provided the luxurious appearance and durability characteristic of natural leather, they had several problems as follows. First, natural leather has low breathability, so there was a problem where sweat and moisture accumulated inside when worn for a long time, reducing comfort. This problem was particularly pronounced in areas with high sweat secretion, such as the armpits and back, which caused discomfort and sometimes resulted in discoloration or damage to the leather material. Second, single-layer leather vests had limitations in simultaneously ensuring both warmth and breathability. Seasonal adaptation was difficult; in winter, insufficient insulation required the wearing of an additional liner, while in spring and autumn, excessive warmth caused one to feel hot. Third, conventional leather vests are manufactured by uniformly sewing or bonding the entire surface, which resulted in poor responsiveness to body movements and uncomfortable wear due to the inherent stiffness of the leather material. In particular, they often failed to conform closely to the curves of the female body, leading to a lack of aesthetic perfection. Fourth, natural leather is difficult to wash and maintain, leading to problems such as bad odors or deterioration of hygiene when worn for a long time. Although some antimicrobial treatment technologies were applied to address this, their effectiveness was limited as they were only applied to the surface of the leather. Fifth, conventional manufacturing methods consisted of a simple process of cutting leather fabric and then sewing or bonding the entire surface with adhesive, making it difficult to impart differentiated functionality to specific areas. For example, it was impossible to treat areas requiring breathability separately from those requiring thermal insulation. Sixth, although there have been some attempts to apply a multi-layer structure, problems arose where interlayer delamination occurred during washing or wearing due to incomplete interlayer bonding, or conversely, the flexibility of the leather material decreased due to excessive bonding. Due to the problems of these conventional technologies, there is a need for the development of technology for women's leather vests and their manufacturing methods that improve breathability, thermal insulation, comfort, hygiene, and body fit while maintaining the luxurious appearance and durability of natural leather. The present invention relates to a method for manufacturing a functional women's leather vest having a multilayer structure, comprising: (a) a fabric preparation step of preparing a natural leather fabric for the outer layer, a breathable functional membrane for the middle layer, and an eco-friendly fiber fabric for the inner layer; (b) a pattern cutting step of cutting the natural leather fabric for the outer layer, the breathable functional membrane for the middle layer, and the eco-friendly fiber fabric for the inner layer according to a women's vest pattern to form an outer layer cut piece, a middle layer cut piece, and an inner layer cut piece; (c) a multilayer lamination step of sequentially laminating the outer layer cut piece, the middle layer cut piece, and the inner layer cut piece to form a multilayer laminate; (d) a bonding step of bonding the layers of the multilayer laminate to form an integrated vest body; and (e) a finishing step of sewing the outer edges of the vest body and attaching accessories to complete the women's leather vest. At this time, the above (a) fabric preparation step comprises: (a1) preparing one or more leathers selected from sheepskin, cowhide, or goatskin as the above natural leather fabric for the outer skin to a thickness of 0.6 mm to 1.2 mm, performing a tanning treatment using a vegetable tanning agent on the surface of the above natural leather fabric, and applying 3 to 8 parts by weight of a silicone-based softener containing dimethylsiloxane or polydimethylsiloxane to 100 parts by weight of the above natural leather fabric to improve flexibility; (a2) As a breathable functional membrane for the intermediate layer, a polyurethane porous membrane or a polytetrafluoroethylene membrane having a water vapor permeability of 5,000 g/m²·24hr or more according to the KS K 05