The invention relates to a cloth bonding apparatus and a cartridge. The cartridge includes a body portion, a reinforcing plate and an elastic member. The reinforcing plate is provided on an upper surface of the body portion. The elastic member is provided on an upper surface of the reinforcing plate. An upwardly-projecting projection portion is provided on an upper surface of the elastic member. The projection portion contacts the bottom face of a cover portion when the cover portion closes an opening of the body portion of a storage chamber. When the cover portion is closed, the projection portion elastically deforms. Since the projection portion elastically deforms, a gas supplied from a compressor can be reliably sealed inside a channel and the body portion tightly.