US 12,318,972 B2
Double-belt press
Keisuke Sei, Anan (JP)
Assigned to SGIC INC., Tokushima (JP)
Appl. No. 17/922,503
Filed by SGIC INC., Anan (JP)
PCT Filed Jun. 6, 2022, PCT No. PCT/JP2022/022787
§ 371(c)(1), (2) Date Oct. 31, 2022,
PCT Pub. No. WO2023/127179, PCT Pub. Date Jul. 6, 2023.
Claims priority of application No. 2021-215217 (JP), filed on Dec. 28, 2021.
Prior Publication US 2024/0217146 A1, Jul. 4, 2024
Int. Cl. B29C 43/48 (2006.01); B30B 5/06 (2006.01)
CPC B29C 43/48 (2013.01) [B30B 5/062 (2013.01); B29C 2043/483 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A double-belt press that applies pressure to a product by means of a pressurizing fluid contained in a pressurizing chamber while conveying the product sandwiched between a pair of belts, the double-belt press comprising:
a sealer that extends along a length direction of the pressurizing chamber and a width direction of the pressurizing chamber so as to be provided around an outer perimeter of the pressurizing chamber and seals the pressurizing chamber,
wherein the sealer includes
an inner seal that is contained in an inner sealing groove and accommodates an inner seal flow passage having a first intake port via which a sealing fluid supplied into the inner sealing groove is taken in and a first jet port via which the sealing fluid taken in via the first intake port jets toward the belts, the first intake port and the first jet port being formed at opposite ends of the inner seal flow passage,
an outer seal that is contained in an outer sealing groove provided at a position farther from the pressurizing chamber than the inner sealing groove and accommodates an outer seal flow passage having a second intake port via which the sealing fluid supplied into the outer sealing groove is taken in and a second jet port via which the sealing fluid taken in via the second intake port jets toward the belts, the second intake port and the second jet port being formed at opposite ends of the outer seal flow passage, and
a partition wall that is formed between the inner sealing groove and the outer sealing groove and has
a plurality of first fluid supply passages that extend toward the inner sealing groove and supply the inner sealing groove with the sealing fluid,
a plurality of second fluid supply passages that extend toward the outer sealing groove and supply the outer sealing groove with the sealing fluid, and
a plurality of fluid recovery passages that recover the sealing fluid accumulating in a space formed between the inner seal and the outer seal,
wherein for portions of the sealer which extend along the length direction of the pressurizing chamber, each of the first fluid supply passages, the second fluid supply passages and the fluid recovery passages are arranged at different positions from one another with respect to the length direction of the pressurizing chamber, and
for portions of the sealer which extend along the width direction of the pressurizing chamber each of the first fluid supply passages, the second fluid supply passages and the fluid recovery passages are arranged at different positions from one another with respect to the width direction of the pressurizing chamber.