Composite structures for packaging articles and related methods

A method of recycling a heat seal article, comprising:

• obtaining the heat seal article, wherein the heat seal article is produced by a process comprising forming dry fibers comprising cellulose into a roll, and polymer bonding a plurality of particles to the roll to form a roll suitable for converting, wherein polymer bonding occurs at a temperature that exceeds 400° F., and wherein the plurality of particles have a mean size ranging from 0.75 μm to 10 μm, an onset temperature of 120° C. to 134° C., and a specific heat of 1900 J·L·K-1 to 2600 J·L·K-1 at 0° C. to 100′C to form a bonded layer comprising a heat seal, converting the roll suitable for converting into a desired shape comprising an article closure, wherein the article closure comprises the heat seal, and sealing the heat seal by:
• (i) applying a sealing pressure to the article closure for a dwell time, and (ii) bringing temperature of the article closure to a sealing temperature and applying a seal pressure forming the recyclable heat seal article;
• repulping the heat seal article to produce a pulp;
• and
• separating the pulp into a plurality of accept particles and a plurality of reject particles, wherein the accept particles comprise a portion of particles and a bonding polymer, wherein the accept particles comprise fragments or particulates characterized by having a mean surface area of less than 0.05 mm2 and a particle size distribution characterized by having 80% or more of fragments or particulates characterized by having a mean surface area of 0.0015 mm2 or less, a density ranging from .908 g/cm3 to 4.90g/cm3, and in having the ability to pass through a pressure screen comprising a plurality of holes ranging in size from 0.050 inches to 0.075 inches or a plurality of slots ranging in width from 0.0006″ to 0.020″