Tissue products containing microalgae materials
AssigneeKimberly-Clark Worldwide, Inc.
InventorsThomas Gerard Shannon, Bo Shi, Ellen Elizabeth Pelky, Jeffrey Robert Besaw, David Wesley Bernd
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Abstract
Dry products, and particularly dry tissue substrates, including a blend of conventional papermaking fibers and microalgae are disclosed herein. Use of a cationic retention aid in the dry tissue substrates helps to provide a tissue sheet retaining the microalgae without being detrimental to tissue properties such as caliper, bulk, air permeability, slough and absorbent capacity. Additionally, use of a flocculating agent may agglomerate the microalgae and make it easier to retain the microalgae within the tissue sheet.
Claims19
A tissue basesheet comprising:
- a blend of conventional papermaking fibers and microalgae;
- and
- a cationic retention aid selected from polydiallyldimethylammonium chlorides and branched polyacrylamides;
- a flocculating agent selected from the group consisting of a cationic starch, an amphoteric starch and a polyvinylamine or derivative thereof;
- said tissue basesheet comprising between about 1 and about 50 percent based on total weight of the tissue product of the microalgae and wherein the tissue basesheet has a basis weight less than about 60 grams per square meter and a bulk greater than about 10 cc/g.
A method of making a tissue basesheet in a wet-end stock system including a chest and a head box comprising:
- a. combining microalgae fibrous material with conventional papermaking fibers in a wet state to produce a microalgae/papermaking fiber blend;
- b. adding a cationic retention aid selected from polydiallyldimethylammonium chlorides and branched polyacrylamides and a flocculating agent selected from the group consisting of a cationic starch, an amphoteric starch and a polyvinylamine or derivative thereof to the microalgae/papermaking fiber blend between the chest and the headbox;
- c. drying the web to form a tissue basesheet wherein the tissue basesheet has a basis weight less than about 60 grams per square meter and a bulk greater than about 10 cc/g.
Dependencies are inferred from the claim text.