METHOD AND APPARATUS FOR MAKING A MUSCHROOM SPAWN BAG

摘要

A method and apparatus for manufacturing an improved bag for the cultivation of muschroom spawn is provided. The bags have continuous gas permeable sealing strips (80) sealed to the inside walls of the bags which cover openings (52) in the bags, so as to allow the bags to be vented without loss of moisture. The openings (52) and sealing strips (80) are positioned close to the top and bottom of the bags so as to maximize air flow through the muschroom spawn without creating dry spots, thereby improving spawn yield. The apparatus includes rollers (70, 72) for dispensing plastic film and at least one continuous hydrophobic strip of material (80). A series of apertures (52) are punched by cutting dies (50) in the film, and a vacuum system (60) removes the cut out portions. The strip of material (80) is positioned over the apertures (52) and sealed by sealing dies (90) over them, so as to enclose the apertures (52). A cutting dies cuts off the film and strips (80). A conventional bag making machine forms the bags.