| 摘要 |
PURPOSE:To rapidly laminate unit members with good accuracy, by a method wherein a hot melt resin having low melting temp. is applied to the end surface of each of fins on the side opposite to the plate side of the fins and the coated end surfaces are subsequently matched with the other surface of the plate of the next stage. CONSTITUTION:A plate 201 having fins 202 integrally molded thereto is guided to a roll coater 6 and a molten hot melt resin is thinly applied to the top parts of the fins 202. As the low melting temp. hot melt resin applied to the fins, an adhesive prepared by compounding wax with an ethylene/vinyl acetate copolymer is used. The member coated with the hot melt adhesive is guided to a slitter 20 through guide rollers 16, 17 and drive rollers 18, 19 and cut into a predetermined dimension to become unit members. A large number of the unit members are laminated in a frame by a stacking apparatus 21 so that parallel flow passages cross at a right angle every other stage. Next, the group of a large number of the unit members fixed to the frame is introduced into an oven capable of strongly blowing hot air having definite temp. and exposed to the hot air higher than the melting temp. of the hot melt adhesive to bond the unit members to each other at a stroke. |
