US 5,397,418 AGranted

Method of fusion bonding of a mark plate

AssigneeNippon Valqua Industries, Ltd.

InventorsKenji Shimizu, Atsushi Nobe, Kenichi Yamada

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Abstract

A method of fusion bonding of a mark plate places a mark plate, having a heat-melt portion formed on at least a part of a front surface-outer peripheral portion, a side surface and a back surface-outer peripheral portion, the heat-melt portion being made of a thermoplastic resin 6, into a recess portion provided on a surface of a wall plate. A peripheral portion of the mark plate is heated to a temperature not lower than the melting point of the thermoplastic resin from the front surface side of the wall plate by a front surface side heater, e.g. a heating platen 7, while heating the peripheral portion of the mark plate to a temperature not higher than the melting point of the wall plate from the back surface side of the wall plate by a back surface side heater, e.g. another heating platen. Due to this Owing to this method, the mark plate can be fused to have a sufficient depth of fused portion within a shorter period of time, the wall plate of the basket body can be prevented from experiencing the occurrence of thermal strain, and the mark plate can be fusion bonded to the wall plate with a sufficient bonding strength.

Claims6

Dependent claims

A method of fusion bonding a mark plate to a wall plate, comprising the steps of:

placing a mark plate into a recess provided on a surface of a wall plate, the mark plate comprising a front surface, a side surface and a back surface, each of the front and back surfaces having outer peripheral portions, and the mark plate further comprising a heat-melt portion formed on at least one of the outer peripheral portion of the front surface, the side surface and the outer peripheral portion of the back surface, the heat-melt portion comprising a thermoplastic resin, and the wall plate having a front surface and a back surface and comprising a resin;
and
heating the heat-melt portion of the mark plate and the wall plate in an area in the vicinity of the recess to a temperature not lower than the melting point temperature of the thermoplastic resin of the heat-melt portion and not lower than the melting point temperature of the resin of the wall plate from the front surface side of the wall plate with a front surface side heater, while heating an area of the back surface of the wall plate opposite to the area being heated by the front surface side heater to a temperature lower than the melting point of the resin of the wall plate from the back surface side of the wall plate with a back surface side heater.

Dependencies are inferred from the claim text.

Facts

Application: 08/160,190Filed 2 Dec 1993
Priority: JP 4-3244593 Dec 1992
Granted: 14 Mar 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

B32B 37/142
Characterised by the properties of the layers: laminating of sheets, panels or inserts, e.g. stiffeners, by wrapping in at least one outer layer,…
B29C 65/02
Joining or sealing of preformed parts , e.g. welding of plastics materials; Apparatus therefor: by heating, with or without pressure
B29C 66/1122
Single lapped joints: single lap to lap joints, i.e. overlap joints
B29C 66/4724
Said single elements being substantially flat: said single elements being appliques, e.g. in the form of a text or drawing