A distinct cultivar of Chrysanthemum plant named Salmon Yospringfield, characterized by its uniform and upright plant habit; moderate vigor; dark green and glossy foliage; uniform flowering response; very early flowering, seven-week response time; large decorative-type inflorescences that are about 10. The method implemented by the device is also claimed. In some embodiments, the gate pivots about an axis skewed with respect to a substantially vertical plane. When the heater is energized, the thermoplastic material at the joint is melted or softened, and becomes uniformly distributed in the weld.