Method and apparatus for vacuum foaming refrigerator cabinets
Реферат: A foaming jig (35) with a refrigerator cabinet (13) is enclosed in a vacuum chamber (25); a metered quantity of a polyurethane mixture is then fed into the hollow walls of the refrigerator cabinet (13), making the foam to growth by generating a vacuum degree in the vacuum chamber (25) and into the foaming jig (35); the foamng of the cabinet walls (13) can be carried out in a comparatively short time, by using fast reactive polyurethane formulations.
Target power transmission amount changing method and power transmitting apparatus for implementing same
Номер патента: US20230311700A1. Автор: Min Ho Shin. Владелец: Industry Academy Cooperation Foundation of Myongji University. Дата публикации: 2023-10-05.