Core forming support of a paper reel
A core intended to support a reel of paper, particularly toilet paper, is formed by winding at least one web of cellulose wadding. The core is formed by winding at least one web of cellulose wadding having at least 0.51 g of water-soluble material per gram of cellulose wadding, the water-soluble material being designed to make the web of cellulose wadding more rigid and easier to disintegrate. Thus configured, the core that has both mechanical strength fit for the intended purpose and is far easier to disintegrate than a core mad of cardboard such that it can be disposed of directly in a toilet bowl without the risk of blocking the waste pipe.
1. A method for manufacturing a core, comprising the following steps:
a) supplying a first band of cellulose fiber comprising at least one ply,
b) supplying a second band of cellulose fiber comprising at least one ply,
c) depositing a water-soluble material on the first band, the water-soluble material being in the wet state,
d) joining and pressing the first band with the second band, the assembly obtained constituting a third band in which the plies are joined by the water-soluble material,
e) drying the third band with heat,
f) helically winding the dried third band on itself or with a fourth band, with the insertion of an adhesive material, in the form of a hollow tube,
g) cutting a section of said tube to form the core.
2. The method as claimed in claim 1 , wherein a band of cellulose fiber is joined to the third band to form a new band, and the operation is repeated until a band of cellulose fiber having the desired basis weight is obtained.
3. The method as claimed in claim 1 , wherein the helically winding step includes winding the third band with the fourth band, and wherein the fourth band is identical to the third band or comprises at least two plies, the two plies being joined together by the water-soluble material.