Paper Bags Are Customized And Have Different Sizes To Choose From

What is the size of the customized size of the portable paper bag, and the unfolding drawing refers to the figure obtained after the surface of the space shape is flattened on the plane, which is a content of the geometric study of drawing method. For parts made of sheets, in addition to the need to represent the shape of the part with a multi-faceted orthographic projection, the custom of the portable paper bag also needs to use the unfolded drawing to represent the shape of the sheet before the part is made. The size of the handbag is drawn according to the multi-faceted orthographic projection of the part, which is essentially to find the true shape of the surface.