ADDITION OF CELLULOSE ESTERS TO A PAPER MILL WITHOUT SUBSTANTIAL MODIFICATIONS

The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions， as well as wet laid processes to produce these compositions. More specifically， the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition， process， wet laid product， or articles exhibiting any one of many the desired benefits. This invention also relates to a process to produce a wet laid article in a paper mill， said process comprising adding cellulose ester staple fiber to a hydropulper zone， and/or to a refining zone， and/or after the refining zone wherein said paper mill process is not substantially modified to allow for said adding of said cellulose ester

本发明提供了包含纤维素纤维（cellulose fibers）与纤维素酯纤维（cellulose ester fibers）的组合物，以及由该组合物制备的湿法成网制品（wet laid articles），同时还提供了制备上述组合物的湿法成网工艺（wet laid processes）。更具体而言，本发明提供了包含纤维素纤维与醋酸纤维素纤维（cellulose acetate fibers）的组合物，以及由该组合物制备的湿法成网制品，同时还提供了制备上述组合物的湿法成网工艺。本发明还涉及开发具备多种期望性能中的任意一种的组合物、工艺、湿法成网产品或制品。本发明另涉及一种在造纸厂中制备湿法成网制品的工艺，该工艺包括将纤维素酯短纤维（cellulose ester staple fiber）添加至水力碎浆机区域（hydropulper zone）、打浆区域（refining zone），或打浆区域之后的工序中，且所述造纸厂工艺无需进行大幅改动即可实现上述纤维素酯短纤维的添加。