Multi-line gluing of superimposed leaves

Claim 2

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for shifting at least one of said wave guides to any one of a number of positions where the proximal edge of the web passes through only a portion of said one wave guide.

Claim 3

A drier as claimed in claim 1 wherein said one wave guide is normally parallel with said proximal edge and wherein said shifting means positions the one wave guide into angular relationship to said proximal edge.

Claim 4

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for varying the amount of the electrical energy input to said other wave guide, said means including a detachable coupling for said third wave guide.

Claim 5

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for varying the amount of the electrical energy input to said other wave guide, said means including a detachable coupling for said third wave guide.

Claim 6

A drier as claimeD in claim 2 wherein is provided a support, said shifting means including a member swingable on the support and having means mounting said one wave guide thereon.

Claim 7

A drier as claimed in claim 4 wherein said mounting means is movable on the member for varying the distance between the wave guides.

Claim 8

A drier as claimed in claim 2 wherein a source of said electrical energy is coupled with one of said wave guides, and the other of said wave guides receives its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide, wherein said wave guides are provided with a detachable connection for conduction of said electrical energy therebetween, and wherein said third wave guide is swingable to an inoperative position when said connection is detached.

Claim 9

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof; a source of said electrical energy being coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and means for varying the distance between said one wave guide and said other wave guide in accordance with the distance between the glue lines along one of said edges and the glue lines along the other of said edges, said third wave guide being flexible.

Claim 10

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof; a source of said electrical energy being coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and means for varying the distance between said one wave guide and said other wave guide in accordance with the distance between the glue lines along one of said edges and the glue lines along the other of said edges, said third wave guide being flexible.

Claim 11

A drier as claimed in claim 6 wherein said structure includes means for varying the amount of electrical energy input to said other wave guide.

Claim 12

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including a first means for varying the amount of electrical energy input to said one wave guide, and a second means for varying the amount of electrical energy input to said other wave guide.

Claim 13

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including a first means for varying the amount of electrical energy input to said one wave guide, and a second means for varying the amount of electrical energy input to said other wave guide.

Claim 14

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guidEs having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for varying the amount of electrical energy input to said other wave guide, said structure including means for varying the amount of electrical energy from said one wave guide to said third wave guide.

Claim 15

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guidEs having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for varying the amount of electrical energy input to said other wave guide, said structure including means for varying the amount of electrical energy from said one wave guide to said third wave guide.

Claim 16

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for varying the amount of electrical energy input to said other wave guide, said structure including means for varying the amount of electrical energy from said third wave guide to said other wave guide.

Claim 17

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for varying the amount of electrical energy input to said other wave guide, said structure including means for varying the amount of electrical energy from said third wave guide to said other wave guide.

Claim 20

A method as claimed in claim 12, and varying the amount of electrical energy input to said other field in accordance with the number of glue lines being dried by said other field.

Claim 21

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorB said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy by each wave guide respectively in accordance with the relationship of the number of glue lines along one of said edges to the number of glue lines along the other of said edges.

Claim 22

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorB said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof, there being a source of said electrical energy coupled with one of said wave guides, the other of said wave guides receiving its electrical energy from said one wave guide through a third wave guide coupling the one wave guide with said other wave guide; and structure for controlling said application of the heat energy by each wave guide respectively in accordance with the relationship of the number of glue lines along one of said edges to the number of glue lines along the other of said edges.

Claim 23

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for varying the dwell time of one of said edges within one of said wave guides independently of the dwell time of the other of said edges within the other of said wave guides.

Claim 24

A drier for removing moisture from one or more glue lines extending longitudinally along each or both marginal edges of a web of continuous sheets, arranged in face-to-face relationship, as the web is advanced along a predetermined path of travel, said drier including: an elongated wave guide adapted for conduction of electrical energy in the microwave region and disposed along each of said edges respectively, said wave guides having longitudinal clearance slots for passage of said edges therealong and through the wave guides as the web is advanced, whereby the glue lines absorb said electrical energy to thereby apply heat energy and raise the temperature of the glue lines, causing evaporation of said moisture thereof; and structure for controlling said application of the heat energy in accordance with the number of glue lines being dried, said structure including means for varying the dwell time of one of said edges within one of said wave guides independently of the dwell time of the other of said edges within the other of said wave guides.