The technological features of hand-stitched PVC baseball are mainly reflected in the following aspects:
First, material selection and pretreatment
PVC material characteristics: PVC (polyvinyl chloride) is a common plastic material, featuring durability, water resistance, and ease of cleaning. In baseball production, PVC is often used as the outer skin material to provide good durability and touch.
Material pretreatment: Before sewing, PVC materials may need to undergo pretreatment processes such as cutting and grinding to ensure precise dimensions and smooth edges, facilitating subsequent sewing work.
Second, sewing techniques
Hand-sewing technique: Hand-sewing PVC baseball requires workers to have superb sewing skills. They use specially made needles, threads and tools to tightly sew the PVC outer skin together with the internal fillers (such as rubber or cork ball cores).
Stitching selection and treatment: The stitching is usually made of materials that are wear-resistant and have high tensile strength to ensure that the baseball does not crack easily during repeated hitting. The sewing thread may need to be waxed before sewing to reduce friction, prevent tangling and increase the durability of the sewing thread.
Sewing techniques and density: When sewing PVC baseball by hand, workers will use specific sewing techniques (such as cross-stitch) and sewing density to ensure that the outer skin of the baseball is closely combined with the filling, while maintaining the shape and elasticity of the baseball. The number of sewing stitches is usually precisely controlled, such as 108 stitches for each baseball, to ensure the uniformity and consistency of the sewing.
Third, detail handling and quality control
Edge treatment: After the sewing is completed, workers will carry out fine processing on the edges of the baseball, such as trimming excess stitching and polishing the edges, to ensure that the baseball has a neat appearance and a comfortable touch.
Quality inspection: Hand-sewn PVC baseballs will undergo strict quality inspection after completion. The inspection contents include the weight, circumference, elasticity, sewing quality, etc. of the baseball to ensure that each baseball meets the relevant standards and requirements.
Fourth, personalization and customization
Personalized design: Hand-stitched PVC baseball can be designed in a personalized way according to customer requirements. For example, specific patterns, words or logos can be printed on the surface of a baseball to meet the needs of different occasions and uses.
Customized services: In addition to personalized design, hand-stitched PVC baseball can also offer customized services. For instance, the size and weight of the baseball can be adjusted according to the customer’s size requirements to provide baseball products that better meet individual needs.