Heat sealable tea bag paper and process of producing same

Details Heat sealable tea bag paper and process of producing same Heat sealable tea bag paper and process of producing same

1991-09-16

1992-12-22

Hastings, Karen M.

Paper making and fiber liberation

Processes and products

Multi-layer waterlaid webs or sheets

162130, 1621575, 162149, 162148, D21H 1300

Patent

active

051731541

ABSTRACT:
The tea bag paper comprises a first phase of natural fibers in a weight percentage of from 60% to 85%, and a second phase of heat-sealable synthetic fibers with the remainder of the weight percentage of from 15% to 40%. The second phase penetrates the first phase in such a way that both sides of the paper are adapted to be heat-sealed, with the unit area weight of the paper being between 10 and 15 g/m.sup.2. The tea bag paper exhibits enhanced tea diffusion, and may be processed on special high-speed automatic tea packing machines, because it is heat-sealable on either side thereof.

REFERENCES:
patent: 2414833 (1947-01-01), Osborne
patent: 3386834 (1968-06-01), Noiset
patent: 4274915 (1981-06-01), Munari
Herman, D. F., et al., "Polyethylene Encapsulated Cellulose-A New Papermaking Fiber", Tappi vol. 48, No. 7, pp. 418-423.

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