Nonwoven web material for infusion packaging and method of...

Details Nonwoven web material for infusion packaging and method of... Nonwoven web material for infusion packaging and method of...

2005-01-25

2005-01-25

Bhat, Nina (Department: 1764)

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Particular raw cellulosic materials

C162S098000, C162S141000, C162S213000, C426S077000, C426S084000, C428S316600

Reexamination Certificate

active

06846382

ABSTRACT:
A multi-phase, non-heat seal tea bag web material is provided with a pattern on either the top or bottom phases. The top phase is formed from fibers, such as hardwood, that provide a tighter or more dense fibrous phase than the vegetable fibers used in the base phase. Patterning can be provided during web formation by using a knuckled wire or by applying a fluid jet against the top of the web material. The sifting characteristics of the multi-phase web material are comparable to or better than that exhibited by single phase material.

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