B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/18 (2006.01) B29C 65/22 (2006.01) B65B 51/30 (2006.01) C04B 35/488 (2006.01) C04B 37/00 (2006.01)
Patent
CA 2157499
The invention relates to a sealing jaw for sealing thermoplastic materials or paper or cardboard coated with thermoplastic material, preferably packaging material. The sealing jaw is constructed from two ceramic materials, of which one is electrically insulating and the other electrically conductive. The electrically conductive ceramic material (3) forms a continuous strand embedded in the insulating material (21) and is, at or in the proximity of its end points, metallized so as to make good connection with an electric current source. The electrically conductive ceramic material may be of optional extent and design over the upper surface of the electrically insulating ceramic material (2), and both of the ceramic materials are treated with high pressure and heat so that they together form a pore-free, hard and abrasion-resistant body which can be applied to a steel rail (1).
Fetherstonhaugh & Co.
Tetra Laval Holdings & Finance S.a.
LandOfFree
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