Finished paper for casings and process of preparing same
阅读：487发布：2023-03-02
专利汇可以提供Finished paper for casings and process of preparing same专利检索，专利查询，专利分析的服务。并且Finished paper for casings and method of preparing the same. The method comprises impregnating a thin base paper with excess alkali cellulose xanthate solution, subjecting the impregnated paper to an alcohol treatment to produce regenerated cellulose and then water washing and drying the treated paper.，下面是Finished paper for casings and process of preparing same专利的具体信息内容。
1. METHOD OF PREPARING PAPER SUITABLE FOR USE AS A CASING, COMPRISING THE STEPS OF A. IMPREGNATING SAID PAPER WITH AN ALKALI CELLULOSE XANTHATE SOLUTION; B. TREATING THE IMPREGNATED PAPER WITH LOWER MONO-ALCOHOL THEREBY TO REGNERATED CELLULOSE; AND C. WASHING THE RESULTING PAPER WITH WATER AND THEREAFTER DRYING.
2. The method of claim 1, wherein said lower mono-alcohol is selected from the group consisting of ethyl alcohol and methyl alcohol.
3. Method of claim 1, wherein said step of treating with said alcohol produces dry regenerated cellulose to an amount of 20 to 70 gm/m2, and said paper is between 15 to 30 gm/m2 in thickness.
4. Method of claim 1, wherein said treating step employs the following chemical reaction:
5. Method of claim 1, wherein said alkali cellulose xanthate solution has a cellulose concentration of 8.5 percent, a Hottenroth number of 11, and caustic soda content of less than 6.0 percent.
6. Method of claim 1, wherein said iMpregnation of said paper with alkali cellulose xanthate is on the order of 700 to 800 gm/m2.
7. Method of claim 1, wherein said paper contains polyvinyl alcohol in an amount of about 3%.
8. Method of claim 1, wherein said treating step is for a period of time sufficient for the reaction of alcohol and the impregnated paper to be completed.
9. A casing paper prepared by the process of claim 1.
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