Curtain with adjustable longitudinal size and manufacturing method thereof

A curtain with an adjustable longitudinal size, the curtain comprising:

• an upper curtain piece,
• a lower curtain piece, and
• a lateral flexible splicing assembly;
• wherein the upper curtain piece is a valance, the lower curtain piece is a curtain body, a backlight surface of the lower curtain piece is detachably spliced to a sun-facing surface of the upper curtain piece, and the backlight surface of the lower curtain piece and the sun-facing surface of the upper curtain piece face each other;
• wherein the lateral flexible splicing assembly comprises a first splicing part fixed at the sun-facing surface of the upper curtain piece, and a second splicing part fixed at the backlight surface of the lower curtain piece and cooperating with the first splicing part to detachably splice the upper curtain piece and the lower curtain piece;
• wherein the first splicing part is provided with a plurality of splicing positions, and the second splicing part detachably connects with a selected one of the splicing positions so as to splice the curtain with different longitudinal sizes;
• wherein the lateral flexible splicing assembly further comprises a plurality of laterally-arranged parallel bonding alignment strips covering a portion of the first splicing part, and the second splicing part is not directly connected with the plurality of laterally-arranged parallel bonding alignment strips;
• wherein a distance between two adjacent parallel bonding alignment strips is larger than a width of the second splicing part;
• wherein the first splicing part is a planar splicing structure and the second splicing part is a fastening band having hooks;
• wherein the bonding alignment strips are adhesive tapes, each of the bonding alignment strips is a colored strip structure, and the adhesive tapes are fixed at the first splicing part by press gluing;
• wherein a peripheral portion of the first splicing part is fixed at the upper curtain piece by stitching;
• and
• a hemline structure for covering a splicing seam is fixed at a lower end portion of the upper curtain piece.