Coreless roll of absorbent sheet and method for manufacturing the same

Abstract

A coreless roll of an absorbent sheet product such as napkins, toilet paper, towels, etc., is provided made of a spirally wound continuous web of absorbent material having a first end and a second end, wherein a coating composition comprising a nonionic cellulose ether is coated onto the second end. The coreless roll has excellent stiffness and resistance to collapsing, as well as sufficient flexibility and elasticity. Moreover, the coreless roll has excellent disintegrability in water and can be used up over its whole length. A process for the manufacture of the coreless roll is also provided.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application is a national stage entry under 35 U.S.C. § 371 of, and claims priority to, International Application No. PCT / 162017 / 001405, filed Sep. 29, 2017, the disclosure of which is hereby incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to a coreless roll of an absorbent sheet product such as napkins, toilet paper, towels, etc. In an aspect of the present invention, the coreless roll is provided in a compressed form. The present invention also pertains to a process for the manufacture of the coreless roll.BACKGROUND OF THE INVENTION[0003]Absorbent sheet products in rolled form find extensive use in modern society. Rolls of toilet paper, towels such as household (kitchen) towels or hand towels, etc., are staple items of commerce.[0004]Rolls of absorbent sheet product for home use (e.g., toilet paper) typically consist of a continuous web of absorbent material that is ...

AI Technical Summary

Benefits of technology

The present patent is about a new type of absorbent sheet product that doesn't have a core and is very stiff and resistant to collapsing, but also flexible and elastic enough to be used throughout. It is easy to break down in water and can be used from start to finish.

Problems solved by technology

However, the core is expensive, requires storage space and additional manual handling.

Furthermore, the core remains after use of the absorbent sheet product, thus increasing the risk of clogging sewage systems.

Coreless rolls are generally associated with an increased risk of “collapsing”.

As a consequence of collapsing, it may become difficult to mount the roll on the spindle of a roll holder.

Furthermore, collapsing generally creates a feeling of decreased product quality among consumers.

Furthermore, the roll can be subjected to deformation forces during manufacturing, packaging, storage, transport, e.g., radial forces exerted in the rewinding and / or cutting unit, axial forces occurring during packaging and / or when packaged roll products are stacked on pallets for storage / shipment, etc.

As a consequence of deformation forces, the continuous web of absorbent material can be irreversibly deformed, thus creating a feeling of decreased quality among consumers.

This renders the incorporation and attachment of the polymer sheet to the inner layer of the nonwoven tissue web technically complex and difficult to implement at the running speed required for industrial manufacturing.

Hence, the resulting core lacks flexibility and shows low elasticity.

As a result, after the roll has been compressed, it is difficult to reopen the axial hollow passageway in a manner leading to a well-defined axial hollow passageway.

It is hence difficult to separate the first inner turns without tearing apart the elongated absorbent material on which the binder is applied.

As a result, it is not possible to use the elongated absorbent material on its whole length, e.g., up to the last sheet.

However, the paper onto which the adhesive is applied exhibits some stiffness.

As a result, the roll-shaped paper product lacks flexibility and, after the roll has been compressed, it is difficult to reopen the axial hollow passageway in a manner leading to a well-defined axial hollow passageway.

Images