A MULTI-PHASE HEATSEALABLE FIBROUS WEB MATERIAL AND A PAPERMAKING PROCESS FOR PREPARING IT
Improved infusion web material for tea bags and the like is provided by using synthetic pulp in the heat seal phase and forming therein an array of a large number of small discrete craters. These craters, which exhibit an average planar area of at least about 1x10-3 square centimeters, are formed pr...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
01.09.1984
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Edition | 3 |
Subjects | |
Online Access | Get full text |
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Abstract | Improved infusion web material for tea bags and the like is provided by using synthetic pulp in the heat seal phase and forming therein an array of a large number of small discrete craters. These craters, which exhibit an average planar area of at least about 1x10-3 square centimeters, are formed prior to drying the initially formed multi-phase material by directing a low impact mist-like liquid spray onto the heat seal phase. The droplets from the spray displace the fibers to form the shallow craters and, at times, expose portions of the underlying non-heat seal fiber phase. The small craters are present throughout the heat seal phase at a concentration of at least about 40 per square centimeter and occupy about 10-75 percent of the total exposed surface area of the heat seal fiber phase of the material. The web also is treated with a surfactant. |
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AbstractList | Improved infusion web material for tea bags and the like is provided by using synthetic pulp in the heat seal phase and forming therein an array of a large number of small discrete craters. These craters, which exhibit an average planar area of at least about 1x10-3 square centimeters, are formed prior to drying the initially formed multi-phase material by directing a low impact mist-like liquid spray onto the heat seal phase. The droplets from the spray displace the fibers to form the shallow craters and, at times, expose portions of the underlying non-heat seal fiber phase. The small craters are present throughout the heat seal phase at a concentration of at least about 40 per square centimeter and occupy about 10-75 percent of the total exposed surface area of the heat seal fiber phase of the material. The web also is treated with a surfactant. |
Author | ELSTON COLIN HOFFMAN HERBERT ABRAHAM HAROLD MURPHY JOSEPH |
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Notes | Application Number: IN1202CA1980 |
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SubjectTerms | BRAIDING COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS IMPREGNATING OR COATING OF PAPER KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL METHODS OF PRODUCING PAPER THEREON NON-WOVEN FABRICS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PAPER-MAKING MACHINES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TRIMMINGS WADDING |
Title | A MULTI-PHASE HEATSEALABLE FIBROUS WEB MATERIAL AND A PAPERMAKING PROCESS FOR PREPARING IT |
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