Process for making paper
A pulp and cardboard technology, applied in the field of papermaking pulp, can solve problems such as instability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0075] In the following examples, various compositions used in the examples are abbreviated. In these examples, the component labeled "Octasol" was a fibrous cationic colloidal alumina particulate sol available from Associated Octel. When followed by a numerical value, eg, Octasol 0.5, the numerical value represents pounds of Octasol fines on a dry basis per ton of pulp, based on the dry solids weight of the pulp. For example, "Octasol 3.0" means that the pulp is treated with 3.0 pounds of Octasol per ton of pulp on a dry basis, based on the dry solids weight of the pulp. The abbreviation "XP9" used in some examples indicates the same Octasol formulation as indicated in other examples as "Octasol". The abbreviation "782" also refers to the same Octasol product as "XP9" and "Octasol" in the following examples. The specific Octasol products used in the examples below are indicated by Associated Octel as "Octasol 782," with the exception of Octasol products 1317 and 1318 shown ...
Embodiment I
[0081] The performance of OCTASOL fibrous cationic colloidal alumina particles from Associated Octel as a retention aid was tested against a comparative particle technology used in conventional newsprint furnish.
[0082] method :
[0083] The tests were carried out in a paper mill denoted Paper Mill 1 . Drainage was performed using a small screen that was used to drain 500 ml samples. Blend in a food mixer. Water was filtered using the modified Schopper Riegler method.
[0084] The equipment used for the Modified Schopper Riegler Drainage Test includes the following: Modified Schopper Riegler (MSR); 1000-mL graduated cylinder; stop watch; 5-gallon plastic bucket; screen for MSR; ); Whatman ashless filter paper (for ash retention); turbidimeter; hemocytometer; and microscope.
[0085] Get a sample:
[0086] The samples for testing were taken from the headboxes. For multiple tests, take enough specimens. For each test a 1000ml sample is required. Since temperature has a...
Embodiment II
[0109] The performance of OCTASOL particles was tested against a comparative particle technology.
[0110] method :
[0111] Tests were carried out at different industrial paper mills.
[0112] Information on the individual pulps used is shown in the attached chart.
[0113] The furnish or pulp components are listed in the accompanying charts shown in Figures 9-12. The % TFPR and % FPAR results are shown in Table 5 for the pulps described in Table 5. The results of Table 5 are presented graphically in Figures 9 and 10 . The freeness test results are listed in Table 6 and graphed in Figure 11 for the various samples. Table 7 shows the % TFPR of another pulp. The results listed in Table 7 are presented graphically in FIG. 12 .
[0114] Therefore, the moderately charged sample OCTASOL (XP9) will work well. The old and new samples of XP9 performed essentially the same, showing good microsol stability. These results show that OCTASOL works well for alkaline fine papers. ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More