Opening seal for automobiles and method of preparing the same

An opening seal for automobiles, comprising:

• a cross section roughly U-shaped installation base member mounted on a flange including a corner part on a body side, the flange being installed along a periphery of a door opening part of a body, the installation base member including an outer-cabin side wall, an inner-cabin side wall and a connecting wall connecting the side walls;
• a hollow seal member extending from an inner side position and an outer side position of said outer-cabin side wall of the installation base member respectively toward an internal circumference side and an outer circumference side of a door, which is swelled and curved toward an outer-cabin side for making elastic contact with said door thereby sealing an inside and an outside of the automobile;
• one or a plurality of protuberance installed inside the inner-cabin side wall of said installation base member for making elastic contact with and holding said flange;
• and
• a wire core embedded in a longitudinal direction of said installation base member while being bent roughly in U-shape, including:
• a skeletal wire body formed by continuously bending a wire;
• and non-thermo-fusible yarn which does not melt at set vulcanization temperature, is partially connected with the wire body and is roughly linearly extending in a longitudinal direction while controlling expansion of the wire body in a longitudinal direction;
• wherein:
• said wire core has at least two non-thermo-fusible yarns respectively provided on the outer-cabin side and the inner-cabin side thereof;
• the non-thermo-fusible yarn on the outer-cabin side is provided in a range from a bending start position forming a shoulder on the outer-cabin side of the wire body which is bent roughly in U-shape to a position determined by offsetting a point on the door internal circumference side of an inner-side base of said hollow seal member with respect to the wire body;
• the non-thermo-fusible yarn on the inner-cabin side is provided in a range from a bending start position forming a shoulder on the inner-cabin side of the wire body which is bent roughly in U-shape to a position determined by offsetting a point on an opening edge side on said inner-cabin side wall of a base of the protuberance which is positioned on a greater opening edge part side on the inner-cabin side wall of said installation base member among said one or a plurality of protuberance with respect to the wire body;
• and
• a straight line which connects a position of the non-thermo-fusible yarn which is closest to an opening edge of the wire body on the outer-cabin side and a position of the non-thermo-fusible yarn which is closest to an opening edge of the wire body on the inner-cabin side leans toward the internal circumference side from the outer circumference side of the door when viewed from the inside of the automobile.