Abstract: A heating device for heat-sealing containers by heating an end forming portion 13 of a tubular container having a rectangular to square cross section, the end forming portion 13 having four generally quadrilateral first to fourth panels 21 to 24 continuous with one another and each having a heating region 31, 32, 33 or 34 to be heated on an inner surface thereof. The heating device has a hot air nozzle 71 in the form of a bottomed tube and fittable into the container end forming portion 13 for heating an inner surface of the container.

Abstract: A heating device for heat-sealing containers by heating an end forming portion 13 of a tubular container having a rectangular to square cross section, the end forming portion 13 having four generally quadrilateral first to fourth panels 21 to 24 continuous with one another and each having a heating region 31, 32, 33 or 34 to be heated on an inner surface thereof. The heating device has a hot air nozzle 71 in the form of a bottomed tube and fittable into the container end forming portion 13 for heating an inner surface of the container.

Abstract: A process for producing bean curd comprising the steps of cooling soybean milk and bittern individually to below the coagulating temperature of the milk, mixing the cooled milk and bittern together and filling the mixture into buckets, coagulating the mixture in the buckets by heating, and withdrawing the coagulated milk from the buckets and detwatering the coagulated milk to obtain formed bean curd. An apparatus for practicing the process comprises a mold box and a pressing closure each having in a required portion a multiplicity of holes not passing the coagulated milk therethrough but permitting the water contained in the coagulated milk to pass therethrough.

Abstract: A bean curd producing machine comprising soybean milk coagulating means, means for dewatering and shaping coagulated soybean milk and means for delivering bean curd shaped by dewatering. The coagulating means comprises a bucket conveyor disposed within a heating chamber and having coagulating buckets arranged in parallel rows, and a distributing trough disposed above the paths of travel of the buckets in all the rows thereacross and formed in its bottom wall with filling openings positioned immediately above the respective rows of buckets. The dewatering-shaping means comprises a bucket conveyor having press buckets arranged in parallel rows and each formed in a required portion with many dewatering apertures, a press bar disposed above the paths of travel of the press buckets in all the rows thereacross, and lids suspended from the press bar each by a spring, equal in number to the number of the press bucket rows and each provided for one press bucket.