US 4,396,454 A · Apparatus for simultaneously joining and laminating lengths of material

Abstract

A method and apparatus for forming an insulation blanket adapted for use in the accelerated curing of prestressed concrete is disclosed. Sets of feed rollers are positioned in equal numbers on opposite sides of a take-up drum. The feed rollers of each set carry a vinyl material forming an outer layer of said blanket. Each roller of said set is offet relative to the adjacent rollers so that the ends thereof overlap with respect to the adjacent rollers. An insulation feed roller feeds a heavy insulation medium layer onto the take-up drum. Equal numbers of sets of said feed rollers apply said vinyl outer layer to opposite sides of said medium layer. Adhesive is applied to each feed roller as the vinyl outer layer leaves said feed roller, providing means for joining the vinyl materials together and to the medium layer.

Claims23

Dependent claims

An apparatus for making a laminate by longitudinally joining pieces of material comprising in combination:

a plurality of sets of rollers rotatably mounted to a frame, the number of sets of rollers corresponding to the layers of laminate, each roller carrying a length of material, said rollers of a set positioned so as to be offset relative to adjacent rollers, said rollers further having parallel axes of rotation, each of said sets in longitudinal alignment with the remaining of said sets;
applicator means for applying adhesive to one surface of said material and to both surfaces of overlapped edges of selcted adjacent pieces of material fed from said rollers of said sets;
and
take-up drum means for receiving said materials fed from said sets.

1 more element

An apparatus for making a laminate having an insulation medium layer joined to outer layers by longitudinally joining lengths of insulation material and outer layer material respectively comprising in combination:

two or more sets of rotatable feed rollers mounted on a frame, each set of said feed rollers carrying one of said outer layers thereon and each feed roller of said set carrying a length of outer layer material, said sets aligned longitudinally with the length of said outer layer material, the feed rollers of each set positioned so as to be offset relative to adjacent rollers of that set, all of said feed rollers further having parallel axes of rotation;
a rotatably driven take-up drum adapted to receive the outer layer material fed from said feed rollers;
an insulation feed roller adapted to feed said medium layer, said medium layer formed from at least one length of insulation material, to said take-up drum between said outer layer material fed by two or more sets of feed rollers;
and
means for simultaneously joining said outer layer material fed from a set of feed rollers together into said outer layer and to the medium layer.

2 more elements

Dependencies are inferred from the claim text.

Apparatus for simultaneously joining and laminating lengths of material

Life of this patent

Apparatus for simultaneously joining and laminating lengths of material

Life of this patent

Abstract

Claims23