Methods of making the coreless roll are also described.

The piston has a hollow first core connected to the rod and also has a second core for gripping the coil assembly between the second core and the first core.

Also disclosed is a method for installing a coreless roll (12) of a product.

The invention concerns a mandrel (1) suitable for coreless web winding machines.

A system for dispensing coreless rolls of product (12, 710).

The optical filter includes a hollow-core fiber including a first portion and a second portion.

The preform comprises a slotted cladding tube that surrounds a slotted, hollow-core PBG cane.

The first portion includes a hollow core having a first diameter and a cladding having a second diameter.

Stairwell Wall Blocks and Hollow Core Planks are used for stairs.

With this tetrahelical design a hollow core is possible that will reduce weight and permit lubrication if needed without reducing strength.

A coreless roll (10) of absorbent paper product such as toilet tissue is configured to be easier to mount to a rotary dispenser (32) than coreless rolls heretofore known.

One or more layers of coated web (10) are disposed to provide an igniter of cylindrical configuration and having a hollow core.

The coreless roll securing means (18, 46, 106) includes a pair of cooperating plungers (28, 52, 114).

A coreless roll (10) of absorbent paper product such as toilet tissue is configured to be easier to mount to a rotary dispenser (32) than coreless rolls heretofore known.

The present invention relates to articles comprising micro-structured, hollow-core fibres, and methods of their splicing and connectorization.