Method for manufacturing ventilation board

摘要

The present invention relates to a ventilation board, an insulating board, a ventilation system, and articles and architectural applications comprising said ventilation board and a method of manufacturing the ventilation board. The said ventilation board comprises a layer (11) provided with a first aperture (5); an adjacent layer provided (13) with a second aperture (7), the first and second apertures being located relative to each other such that they are non-aligned and are substantially without overlap; and a passageway (9) interconnecting the first and second apertures thereby permitting the passage of fluid therebetween. Therefore, the carton comprising said ventilation board when used for fast food packaging provides sufficient ventilation of the carton so that water condensed from food vapors does not run on to the food in the carton, and sufficient insulation so that the food in the carton is kept warm.

主权项

1. A method for manufacturing a ventilation board, the ventilation board comprising at least two layers, each layer having a surface in mutual contact, and at least one of the surfaces in mutual contact comprises a corrugated surface, the method comprising steps of:
providing a first layer having the corrugated surface; forming at least one aperture in the first layer whose lateral dimension are greater than a width of a corrugation of the corrugated surface and wherein the apertures within the first layer are aligned; providing a second layer; forming at least one aperture, in the second layer whose lateral dimension are greater than the width of the corrugation of the corrugated surface and wherein the apertures within the second layers are aligned; affixing the apertured formed first and second layers together wherein apertures between the first and second layers are non-aligned and are substantially without overlap to form a ventilation passageway between the surfaces of the first and second layers, and a plurality of insulating passageways are connected to the apertures; wherein said ventilation passageway interconnects the apertures for permitting the passage of fluid therebetween and through the board; wherein each insulating passageway is connected with at least one of the apertures for permitting the passage of fluid along and into the insulating passageway.