US 4,603,654 AGranted

Glue applicator for corrugator machines

AssigneeIsowa Industry Co., Ltd.

InventorsKazuo Mori, Eiichi Isowa

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Abstract

Disclosed herein is a glue applicator for a corrugator machine in which a starch glue in a glue pan is applied to ridge portions of a corrugated core sheet by an applicator roll, the applicator comprising: a stock tank holding a stock of starch glue; a glue heater having a couple of upper and lower glue pooling chambers for reserving the starch glue supplied from the stock tank, a heat medium chamber defined between the upper and lower pooling chamber and holding a heat medium, a plural number of heat exchange pipes inserted vertically across the heat medium chamber in contact with said heat medium and communicating at the upper and lower ends with the upper and lower pooling chambers to permit flows of the starch glue between the upper and lower pooling chambers, and a steam blow pipe opened into a bottom portion of the heat medium chamber for blowing steam thereinto; and a glue feed pipe connecting the upper pooling chamber of the glue heater to the glue pan.

Claims20

Dependent claims

Glue applicator apparatus, for use with a system in which glue disposed within a glue pan is applied to the ridge portions of a corrugated core sheet, comprising:

tank means for holding a stock of said glue;
glue heating means for providing heated glue to said glue pan, including a first upper glue pool chamber into which said glue from said tank means is deposited;
a second upper glue pool chamber, separated from said first upper glue pool chamber, from which said heated glue is discharged to said glue pan;
a lower glue pool chamber, vertically spaced below said first and second upper glue pool chambers, for transferring said glue from said first upper glue pool chamber to said second upper glue pool chamber;
a heat medium chamber, defined between said upper glue pool chambers and said lower glue pool chamber, for containing a heat medium;
a first set of vertically extending heat exchanger pipes, interposed between said first upper glue pool chamber and said lower glue pool chamber and extending through said heat medium chamber in a heat exchange relationship with said heat medium disposed within said heat medium chamber, for transferring said glue from said first upper glue pool chamber to said lower glue pool chamber;
a second set of vertically extending heat exchanger pipes, interposed between said lower glue pool chamber and said second upper glue pool chamber and extending through said heat medium chamber in a heat exchange relationship with said heat medium disposed within said heat medium chamber, for transferring said glue from said lower glue pool chamber to said second upper glue pool chamber;
and a steam inlet feed pipe fluidically connected to said heat medium chamber for providing steam thereinto;
first conduit means for conducting said glue from said tank means to said first upper glue pool chamber of said glue heating means;
and
second conduit means for conducting said heated glue from said second upper glue pool chamber to said glue pan.

8 more elements

Glue applicator apparatus, for use with a system in which glue disposed within a glue pan is applied to the ridge portions of a corrugated core sheet, comprising:

tank means for holding a stock of said glue;
glue heating means for providing heated glue to said glue pan, including a first upper glue pool chamber into which said glue from said tank means is deposited;
a second upper glue pool chamber, separated from said first upper glue pool chamber, from which said heated glue is discharged to said glue pan;
a lower glue pool chamber, vertically spaced below said first and second upper glue pool chambers, for transferring said glue from said first upper glue pool chamber to said second upper glue pool chamber;
a heat medium chamber, defined between said upper glue pool chambers and said lower glue pool chamber, for containing a heat medium;
a first set of vertically extending heat exchanger pipes, interposed between said first upper glue pool chamber and said lower glue pool chamber and extending through said heat medium chamber in a heat exchange relationship with said heat medium disposed within said heat medium chamber, for transferring said glue from said first upper glue pool chamber to said lower glue pool chamber;
a second set of vertically extending heat exchanger pipes, interposed between said lower glue pool chamber and said second upper glue pool chamber and extending through said heat medium chamber in a heat exchange relationship with said heat medium disposed within said heat medium chamber, for transferring said glue from said lower glue pool chamber to said second upper glue pool chamber;
and a steam inlet feed pipe fluidically connected to said heat medium chamber for providing steam thereinto;
first conduit means for conducting said glue from said tank means to said first upper glue pool chamber of said glue heating means;
second conduit means for conducting said heated glue from said second upper glue pool chamber to said glue pan;
and
means for supplying steam to said ridge portions of said corrugated core sheet at a position immediately upstream of the location at which said corrugated core sheet is to be bonded to a liner for heating said glue applied to said ridge portions of said corrugated core sheet so as facilitate said bonding of said corrugated core sheet to said liner.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/703,476Filed 20 Feb 1985
Priority: JP 59-3089820 Feb 1984
Granted: 5 Aug 1986
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B31F 1/2818
Combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard: glue application specially adapted therefor
B31F 1/285
Details, e.g. provisions for drying, moistening, pressing: heating or drying equipment
Y10T 156/1021
Transverse corrugating: treating material of corrugated lamina or dry adhesive thereon to render tacky
B31F
Mechanical working or deformation of paper, cardboard or material worked in a