Patent ID: 8622418

Claim:
A method for manufacturing a knee airbag cushion, the method comprising: (a) preparing a panel having first and second panel surface parts and a virtual central line interposed between the first and second panel surface parts, a distance from the virtual central line to the first panel surface part being different from a distance from the virtual central line to the second panel surface part; (b) folding the first panel surface part in a first direction with respect to the virtual central line; (c) connecting portions of the first and second panel surface parts to each other at both sides of a peripheral portion of the virtual central line to form first and second sewing lines; (d) folding an area of the virtual central line in a second direction, the second direction being identical to the first direction; and (e) forming a third sewing line to connect the first panel surface part to the second panel surface part while overlapping with at least one of the first and second sewing lines.