US 5,352,319 A · Process and apparatus for production of toilet paper rolls having no core

Abstract

Rolls of toilet paper are produced by winding a paper web around each of a plurality of air permeable cylindrical cores each having a fixed, outer diameter while applying a liquid to only a leading portion of each web so that wound webs each having a wet inner portion are formed. After drying the wound webs to integrally bind the inner portion, the core is separated from each of the wound webs. The above method is carried out using an apparatus including a winding device having a shaft to which the cylindrical cores are detachably fitted in a row, a drive device for rotating the cores supported by the shaft and to wind a paper web around each of the cores, an applying device for wetting only a leading portion of each to form a wet inner portion, a releasing device for releasing the wound web-bearing cores from the shaft to obtain arrays of the released, wound web-bearing cores, a drying device for drying the wet inner portion of each wound web, and a separating device for separating the wound webs from the cores.

Claims15

Dependent claims

An apparatus for the production of rolls of toilet paper, comprising:

winding means, having a shaft to which a plurality of coaxially aligned, cylindrical cores each having a fixed, outer diameter are detachably fitted, for winding a predetermined length of a continuous toilet paper web around each of said cores;
means for wetting only a leading portion of said web such that the web wound around each of said core has a wet inner portion adjacent said core;
means for releasing said plurality of wound web-bearing cores from said shaft such that the released, wound web-bearing cores remain coaxially arrayed;
drying means for receiving said arrayed, wound web-bearing cores released from said shaft and for drying said wet inner portion of the web wound around each of said cores;
and
separating means for separating said wound web having said dried, inner portion from each of said cores.

3 more elements

An apparatus according to claim 6, wherein said drying means includes:

a table having longitudinally spaced apart, first and second end portions and a lateral length sufficient for supporting said arrayed, wound web-bearing cores thereon with the axes of said cores being laterally oriented,
means for placing said arrayed, wound web-bearing cores at said first end portion of said table with the axis thereof being oriented along the lateral direction of said table,
means for displacing said arrayed, wound web-bearing cores on said table from said first to said second end portions while maintaining said arrayed state, and
means for injecting hot air in the direction parallel with the axis of said arrayed cores so that the injected hot air can pass through the through holes of said arrayed, wound web-bearing cores on said table during the displacement thereof from said first to second end portions.

1 more element

Dependencies are inferred from the claim text.

Process and apparatus for production of toilet paper rolls having no core

Life of this patent

Process and apparatus for production of toilet paper rolls having no core

Life of this patent

Abstract

Claims15