US 5,792,307 A · Apparatus for forming a corrugated substrate

Abstract

An apparatus for forming a corrugated substrate comprises a first assembly for advancing liner sheets including a corrugated medium and facing sheets and a second assembly for advancing fluting sheets. Each fluting sheet has bend surfaces along its top and bottom sides. An applicator applies adhesive along at least one of the top and bottom sides of the fluting sheets. The first assembly and second assembly advance the liner sheets and fluting sheets into contact with one another along the side of the fluting sheet having the adhesive. The fluting sheets are secured to the liner sheets to form a layered article having an upper and lower surface. A means for correlating operates the first assembly, second assembly, and applicator so that in each cycle of operation the layered article adheres to at least an additional layered article in succession. The correlating means preferably operates such that another one of the liner sheets adheres along an exposed one of the top and bottom sides of one of the fluting sheets of the layered article corresponding to the upper and lower surface of the layered article, respectively.

Claims12

Dependent claims

An apparatus for forming a corrugated substrate comprising:

(a) first means for advancing liner sheets including a corrugated medium and facing sheets;
(b) an embossing assembly for forming blank sheets including a corrugated medium and facing sheets into fluting sheets having bend surfaces along top and bottom sides thereof;
(c) second means for advancing said fluting sheets positioned downstream of said embossing assembly;
(d) an applicator for applying adhesive along at least one of said top and bottom sides, at least one of said first advancing means and said second advancing means advancing said fluting sheets and said liner sheets into contact with one another along at least one of said top and bottom sides having adhesive applied, thereby securing one of said fluting sheets to at least one of said liner sheets to form a layered article having an upper and lower surface;
and
(e) means for correlating operation of elements (a)-(d) so that in each cycle of operation:
said layered article adheres to at least an additional layered article in succession, whereby each additional layered article adheres to a preceding layered article;
and
another one of said liner sheets advanced by said first advancing means adheres along an exposed one of top and bottom sides of one of said fluting sheets of said layered article corresponding to said upper and lower surface of said layered article respectively.

6 more elements

An apparatus for forming a corrugated substrate comprising:

(a) first means for advancing liner sheets including a corrugated medium and facing sheets;
(b) a first applicator for applying adhesive;
(c) second means for advancing fluting sheets including a corrugated medium and facing sheets, said fluting sheets having bend surfaces along top and bottom sides thereof, said first applicator applying adhesive along a selected one of said top and bottom sides, at least one of said first advancing means and said second advancing means advancing said fluting sheets and said liner sheets into contact with one another along said selected one of said top and bottom sides, thereby securing one of said fluting sheets to one of said liner sheets to form a layered article;
(d) an embossing assembly for forming blank sheets including a corrugated medium and facing sheets into said fluting sheets having bend surfaces along top and bottom sides thereof, said embossing assembly positioned upstream of said second advancing means;
(e) a second applicator for applying adhesive to said bend surfaces along a remaining one of said top and bottom sides of said fluting sheets of said layered article corresponding to a remaining one of an upper or lower surface of said layered article;
and
(f) means for correlating operation of elements (a)-(e) so that in each cycle of operation:
said layered article adheres to at least an additional layered article in succession in each cycle of operation, whereby each additional layered article adheres to a preceding layered article;
and
another one of said liner sheets adheres along said remaining one of said upper and lower surface of said layered article.

7 more elements

Dependencies are inferred from the claim text.

Apparatus for forming a corrugated substrate

Life of this patent

Apparatus for forming a corrugated substrate

Life of this patent

Abstract

Claims12