Acne Studios' body-letter embroidered double-layer long-sleeved tunicThe entire collection of clothing has undergone pre-shrinking, cutting, alignment sewing, multi-layer special embroidery, segmented ironing, and over twenty other meticulous processing steps. The technical threshold is much higher than that of a regular single-piece knitted top. There are strict standards for equipment precision, skilled sewing workers, and fabric compatibility control. The main body of the garment is made of high-weight washed knitted cotton fabric. Before production, it undergoes double pre-treatment of high-temperature shrinkage washing and brushing softening to avoid shrinking and hardening, ensuring a loose and flexible silhouette. The inner layer of the joined sleeves uses fine-spun high-stretch ribbed fabric. Due to significant differences in the weight and stretch coefficient of the two raw materials, the cutting table must be independently laid out and cannot be mixed. The fabric loss is nearly 20% higher than that of ordinary T-shirts. After cutting, manual sorting by size is carried out to prevent confusion between short-sleeved and long-sleeved pieces. The joining of different materials is the core process difficulty. The short-sleeved cuffs of the outer layer and the long-sleeved with ribbed fabric on the inner layer need to be aligned and locked edge synchronously with four layers of cutting pieces. During sewing, the fabric tension is strictly controlled, and the machine operator moves the fabric at a uniform speed to ensure that the length error of both sleeves does not exceed 0.2 cm. The shoulder seam and the back collar use double-layer bone-edge binding technology, with double stitching to reinforce the seam and prevent thread breakage and open seams. A protective band for pulling is added inside the collar opening to enhance structural stability. The retro-style body letter emblem uses multi-layer composite computer special embroidery technology. Before embroidery, it is fixed on the base with a high-temperature paper liner to prevent fabric wrinkling and shifting. The body letter and the wheat ear shield emblem are separately and layer-wise embroidered. The needle density is 12 stitches per centimeter at the turning points. The needle is precisely controlled to avoid skipping stitches and floating lines. After embroidery, the lining is manually removed and finely ironed to avoid hard lining residue affecting the skin sensation. The garment undergoes three-stage layering and whole-ironing process. First, the embroidery area is gently ironed at a low temperature, then the sleeve joint is flattened, and finally, the three-dimensional whole-ironing restores the layered effect of the double-piece garment, eliminating the problem of stacking and flattening. The entire process integrates the alignment and sewing of different materials, multi-layer special embroidery, and segmented shaping and washing. Each detail is manually calibrated and rechecked. The small-scale assembly line is difficult to replicate its smooth texture.