Table 65: UK 15-Year Perspective for Specialty Paper Additives by Product Segment - Percentage Breakdown of Dollar Sales for Binders, Defoamers, Sizes, Wet-Strength Additives, Dry Strength
Additives, Pitch/Control Agents, Retention & Drainage Aids and Biocides for the Years 1998, 2008, and 2012 (includes corresponding Graph/Chart) III-33
Some examples of this coagulant concept being used in different parts of the industry include internal size promotion or fixation, efficiency gains for wet end starch and dry strength
additives, optical whitener quenching, incoming water color removal, effluent neutralization prior to the clarifier, dual polymer retention systems, and drainage aids for save alls and forming fabrics.
As mentioned before, starches were traditionally used for imparting dry strength
and enhancing surface integrity when paper was made primarily from fiber.
I've seen work with deaerators trying to move out defoamers, but with nothing new in the technology; new bromine biocide systems that are now several years old; and the same synthetic biocides, the same dyes and whiteners, the same dry strength
agents, and rosin/alum systems that are still rosin/alum.
Ultimately the company chose "Tencel" fibers from Acordis, Flemington, NJ, for their softness, absorbency, purity and versatility characteristics, such as 85% dry strength
retention and degradability.
Molds made with high moisture-content sands develop the same high hot and dry strength
, resulting in a difficult shakeout and lumps of sand carried over the shakeout deck.
Strength: Experience here is mainly with starch, but dry strength
and wet strength agents can be considered in a similar way.
Non-allergenic Soft natural feel Excellent wet and dry strength
Superior absorbency compared to any other fiber Exceptional dry feel when wet compared to viscose rayon Unrivaled wipe dry performance Low static Comfortable and cool in the summer
Normally, this bentonite isn't used by aluminum foundries due to its high hot and dry strength
, and because the effective temperature of destruction for this clay is well above the pouring temperature of the molten aluminum.
Then, depending upon whether the grade is tissue or towel, a resin providing dry strength
, or both wet and dry strength
, can be recommended.
Control problems with moisture, clay content and mulling efficiency can cause high hot and dry strength
problems, which cause poor sand breakdown and retention at shakeout.
also is used sometimes to complement the green strength data by relating to the sand's shakeout properties of the sand.
These emulsions of acrylate copolymers combine properties such as heat reactivity, excellent adhesion characteristics and wet and dry strength