Aerosol generating articles

A method of manufacturing an aerosol permeation element for use in an aerosol generating article, the method comprising:

• conveying a plurality of aerosol permeable cores along a conveying path at a first speed;
• and
• forming a sleeve around each core at a second speed greater than the first speed to generate a space between consecutive cores within the sleeve.

An apparatus for manufacturing an aerosol permeation element of an aerosol generating article, the apparatus comprising:

• a conveyor configured to convey a plurality of aerosol permeable cores along a conveying path at a first speed;
• and,
• a sleeve former configured to form a sleeve around each aerosol permeable core at a second speed, wherein the second speed is greater than the first speed to generate a space between consecutive aerosol permeable cores within the sleeve.