| US 7,493,692 B2 | ||
| Method for making plate-shaped heating panel of uniform flow path | ||
| Se-Chang Kang, Cheongju-si (Korea, Republic of); Jang-Seok Park, Cheongju-si (Korea, Republic of); Kyoung-Myoung Chae, Daejeon (Korea, Republic of); Min-Soo Han, Kimpo-si (Korea, Republic of); Seong-Chan Park, Cheongju-si (Korea, Republic of); and Sung-Seock Hwang, Cheongju-si (Korea, Republic of) | ||
| Assigned to LG Chem, Ltd., (Korea, Republic of) | ||
| Filed on Sep. 07, 2005, as Appl. No. 11/221,226. | ||
| Claims priority of application No. 10-2004-0071094 (KR), filed on Sep. 07, 2004. | ||
| Prior Publication US 2006/0054163 A1, Mar. 16, 2006 | ||
| Int. Cl. B21D 39/06 (2006.01); B21D 53/02 (2006.01); B23P 6/00 (2006.01); F28F 3/14 (2006.01) | ||
| U.S. Cl. 29—890.03 [29/890.032; 29/890.038; 29/890.039; 29/890.045; 165/170] | 1 Claim |
| 1. A method for manufacturing a heating panel comprising upper and lower plates integrally formed to face each other so as
to form an inner fluid pathway in which heating fluid flows, a plurality of connecting members, each symmetrically extending
from the upper and lower plates toward the lower and upper plates, respectively, to connect the upper and lower plates to
each other, the inner fluid pathway formed inside the plate by the plurality of connecting members, and two fluid communication
portions to supply and discharge the heating fluid, which comprises:
preparing upper and lower moulds corresponding to the upper and lower plates;
injecting a plastic material into a cavity between the moulds to produce semi-manufactured products of the upper and lower
plates; and
bonding the semi-manufactured products of the upper and lower plates to produce the heating panel by a vibration bonding process,
wherein the vibration bonding process is performed under conditions of a bonding depth of 0.3 mm or more, a bonding pressure
of 800 kg/cm2 or more, a bonding time of 10 seconds or more, and a vibration frequency of 50 Hz or more.
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