Down product having joining pattern line produced by high-frequency bonding technique and method for manufacturing same

A method of manufacturing a down product in which at least one bonding pattern line for compartment separation is formed by high-frequency bonding an adhesive between an inner fabric and an outer fabric, comprising:

• (1) a preparing step of preparing an inner fabric and an outer fabric,
• (2) a printing step of printing a heat-reactive liquid adhesive in a predetermined printing pattern on the inner surface of the inner fabric or on the inner surface of the outer fabric,
• (3) a drying step of drying the liquid adhesive printed on the inner surface of the inner fabric or on the inner surface of the outer fabric,
• (4) a laminating step of laminating the inner fabric and the outer fabric, and
• (5) a high-frequency bonding step of high-frequency heating and simultaneously pressing both the laminated inner and outer fabrics in a pressing pattern which is the same with said printing pattern to form the bonding pattern line.

A double fabric for down products, comprising at least one bonding pattern line for compartment separation which is composed of an inner bonding line formed between an inner fabric and an outer fabric and a surface pattern line formed on the outer surface of the inner fabric or the outer fabric, characterized in that:

• said inner bonding line is formed on the inner surfaces of the inner fabric and the outer fabric by fixing a heat-reactive adhesive on the surface of the inner or outer fabrics in a predetermined printing pattern, high-frequency heating and curing said fixed adhesive, and thus combining said fabrics with the reacted and cured adhesive,
• said surface pattern line is formed on the surface of the outer fabric by pressing said inner fabric and outer fabric together in a predetermined pressing pattern during the high-frequency heating to cause a difference in surface texture,
• the inner bonding line issued from said printing pattern and the surface pattern line issued from said pressing pattern are the same in pattern (shape) and have a width difference of 10% or less, and
• said surface pattern line is substantially unified with the inner bonding line by the adhesive oozed onto or near to the surface of the outer fabric and then cured.