Waveguide Exposure Chamber for a Micrwave Energy Applicator

A microwave heating device for activating a microwave-activatable foam insulating material within the dual sidewalls of a beverage cup. The device has a waveguide that defines an exposure chamber for the articles. The waveguide has a plurality of 90-degree twisted rectangular sections, for rotating a perpendicular microwave field pattern along the length of the waveguide. A continuous flexible belt made of a dielectric material passes into and through the exposure chamber along a conveying path, and is formed and maintained into a curled shape in cross section through the exposure chamber to retain the untreated beverage cup upon the curled belt. 种微波加热装置，其用于激活饮料杯的双侧壁内的可微波激活泡沫隔热材料。该装置具有限定用于物品的暴露室的波导。波导具有用于沿着波导的长度旋转垂直微波场图案的多个90度扭曲矩形部。由介电材料制成的连续柔性带沿着输送路径穿到暴露室中，且穿过暴露室，并且借助暴露室而被形成并维持为横截面是卷曲形，以将未处理的饮料杯保持在卷曲带上。