Improved dry crimp strength in non-heat seal infusion package material
OwnerHelen Viazmensky, Peter Scottinventors
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Abstract
A fibrous, non-woven, non-heat sealable, porous web material comprising natural fibers and 0.5 to 25 percent synthetic material is provided. The web material has properties well suited for use in infusion packages. The web material exhibits improved stiffness and memory characteristics which lead to significantly improved strength of mechanically formed and crimped seams.
Claims20
A fibrous non-woven non-heat seal porous web material comprising 0.5 to 25 percent by weight of synthetic material with natural fibers comprising the remainder of said web material.
An infusion package comprising a fibrous non-woven non-heat seal porous web material comprising 0.5 to 25 percent by weight of non-activated synthetic material with natural fibers comprising the remainder of said web material, said web material being mechanically folded to enclose a beverage precursor material therein.
A process of making a fibrous non-woven non-heat seal porous web material of enhanced dry crimp strength comprising:
- forming a slurry of natural fibers;
- adding synthetic materials in an amount insufficient to form a heat seal bond to said slurry to form a furnish;
- wet laying said furnish to form a web;
- and
- drying said web to form said web material.
Dependencies are inferred from the claim text.