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1. 发明公开

EP4442898A2 LYOCELL MATERIAL, SMOKING ARTICLE FILTER, SMOKING ARTICLE, AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：EP4442898A2
公开(公告)日：2024-10-09
申请号：EP24188363.6
申请日：2022-12-26
申请人： Kolon Industries, Inc. , KT&G Corporation
发明人： JEONG, Young Han , YANG, Ji Eun , JEONG, Jong Cheol , JIN, Sang Woo , HWANG, Yeong Nam , MA, Kyengbae , HA, Sunghoon , YANG, Jin-Chul , CHEONG, Bong Su
IPC分类号： D06M13/224
CPC分类号： A24D3/06 , A24D3/10 , B01D39/18 , D01D5/06 , D01D5/22 , D01F2/00 , D06M13/224
摘要： Provided are a lyocell material, a filter for a smoking article and including the lyocell material, and a method of manufacturing these. The lyocell material manufactured according to the present application and a filter for a smoking article including the same replace conventional cellulose acetate materials and filters, and not only has excellent biodegradability, but also provides excellent filter manufacturing processability and excellent tobacco physical properties (e.g. hardness).

2. 发明公开

EP4437865A1 LYOCELL MATERIAL, SMOKING ARTICLE FILTER, SMOKING ARTICLE, AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：EP4437865A1
公开(公告)日：2024-10-02
申请号：EP22916661.6
申请日：2022-12-26
申请人： Kolon Industries, Inc. , KT&G Corporation
发明人： JEONG, Young Han , YANG, Ji Eun , JEONG, Jong Cheol , JIN, Sang Woo , HWANG, Yeong Nam , MA, Kyengbae , HA, Sunghoon , YANG, Jin-Chul , CHEONG, Bong Su
IPC分类号： A24D3/06 , D01D5/06 , D01D5/22 , D01F2/00 , B01D39/18 , A24D3/10 , D06M13/224
CPC分类号： A24D3/06 , A24D3/10 , B01D39/18 , D01D5/06 , D01D5/22 , D01F2/00 , D06M13/224
摘要： Provided are a lyocell material, a filter for a smoking article and including the lyocell material, and a method of manufacturing these. The lyocell material manufactured according to the present application and a filter for a smoking article including the same replace conventional cellulose acetate materials and filters, and not only has excellent biodegradability, but also provides excellent filter manufacturing processability and excellent tobacco physical properties (e.g. hardness).

3. 发明公开

EP3636827A2 ARAMID YARN HAVING EXCELLENT ADHESIVENESS WITH POLYURETHANE MATRIX RESIN, METHOD FOR PRODUCING SAME, AND ARAMID YARN PRODUCED THEREBY 有权
公开(公告)号：EP3636827A2
公开(公告)日：2020-04-15
申请号：EP18824724.1
申请日：2018-06-29
申请人： Kolon Industries, Inc.
发明人： YANG, Ji Eun , PARK, Hyun Jung , YOON, Sang Jun
IPC分类号： D06M15/564 , D03D15/00 , D06M101/34
摘要： The aramid yarn having excellent adhesive properties with a polyurethane matrix resin according to the present invention is characterized in that the polyurethane resin is adhered and impregnated to the surface and inside of the aramid yarn, and the content of the polyurethane resin is 1.5 to 7.0 % by weight based on the sum of the weight of the polyurethane resin adhered and impregnated to the surface and inside of the aramid yarn plus the weight of the aramid yarn before the polyurethane resin is adhered and impregnated.
According to the present invention, during a continuous process of producing the aramid yarn, while adhering and impregnating a sizing agent composition composed of a polyurethane resin, an organic solvent, and water to the surface and inside of the aramid yarn, the content of the polyurethane resin adhered and impregnated to the surface and inside of the aramid yarn is adjusted to 1.5 to 7.0 % by weight based on the sum of the weight of the polyurethane resin adhered and impregnated to the surface and inside of the aramid yarn plus the weight of the aramid yarn before the polyurethane resin is adhered and impregnated.
In the present invention, since the sizing agent composition can be adhered and impregnated to the aramid yarn during the spinning step of producing the aramid yarn, a separate step of adhering the sizing agent composition can be omitted.
Moreover, since the aramid fabric according to the present invention is woven into a basket-weave structure and thus has low denseness, the wetting property with the polyurethane matrix resin which is impregnated into the aramid fabric is improved, and consequently, the adhesive properties between the aramid fabric and the polyurethane matrix resin are improved.
The present invention is useful as a refrigerator insulation material, an automotive component material, an electronic component material, and the like.

4. 发明公开

EP3647025A2 ARAMID FABRIC HAVING EXCELLENT ADHESION TO POLYURETHANE MATRIX RESIN AND EXCELLENT TENSILE STRENGTH, METHOD FOR MANUFACTURING SAME, ARAMID FABRIC PREPREG COMPRISING SAME, AND ARAMID FABRIC/THERMOPLASTIC POLYURETHANE RESIN COMPOSITE COMPRISING SAME 有权
公开(公告)号：EP3647025A2
公开(公告)日：2020-05-06
申请号：EP18860886.3
申请日：2018-09-20
申请人： Kolon Industries, Inc.
发明人： PARK, Hyun Jung , YANG, Ji Eun , YOON, Sang Jun
IPC分类号： B29C70/22 , B29C70/34 , D06M15/564 , D06B3/10 , D03D15/00 , C08J5/24
摘要： An aramid fabric having excellent adhesion to a polyurethane matrix resin and excellent tensile strength is produced by the method including the steps of: (i) weaving a basket-structured aramid fabric by using aramid yarns as warp and weft yarns; and then (ii) dipping the woven aramid fabric in a sizing agent solution consisting of an aqueous polyurethane resin as a sizing agent and water, followed by squeezing and drying.
In the present disclosure, the sizing agent is applied to the woven aramid fabric, thereby effectively preventing the deterioration in weaving efficiency due to the dropping of sizing agent during weaving, compared with a method in which a sizing agent is applied to an aramid yarn before weaving. Further, in the present disclosure, an aqueous polyurethane resin is attached to or impregnated into a surface and the inside of the aramid fabric, and thus the adhesion of the aramid fabric to a polyurethane matrix resin is improved and the cohesion of aramid yarns in the aramid fabric is increased, so that the tensile strength of the aramid fabric is enhanced.
Further, in the present disclosure, the aramid fabric is woven in a basket weave, and thus the compactness of the aramid fabric is lowered and the wetting property of the aramid fabric with the polyurethane matrix resin is improved, and as a result, the adhesion between the aramid fabric and the polyurethane matrix resin is enhanced. Consequently, the aramid fabric/thermoplastic polyurethane resin composite of the present disclosure is useful as an automobile part material such as an automobile bumper, or an electronic part material, which requires impact resistance.

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