Towel and Tissue

The same styrene acrylic emulsions used for sizing tissue paper to provide wet strength are used in the ink. The colorants used are mostly dyes or pigments that are not dermatological irritants. The resin should give a waterproof bond and be low cost. The components of a towel and tissue ink are re-pulpable for ease in recovery of waste and/or off-grade material to achieve satisfactory economies of paper towel tissue converting. 

1 Western Michigan University Web Site http //www.wniich.edu/ppse/flexo/, Flexographic Process 

3 Wicks, Z. W. Jr., Jones, F. N., Pappas, S.P., Dispersions in Aqueous Media, in Organic Coatings, Science and Technology, 2nd edn, Wiley-Interscience, 1999, Chapter 20.3, p. 395. 

US Patent 5,208,319, Rosin-Based Grind Resins for Aqueous Printing Ink. 

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Spray appHcations to the surface of the sheet have been useful, especially for appHcation of creping aids and release agents in towel and tissue miUs. The spray appHcation of functional chemicals has not been used widely. Generally, the uniformity of appHcation is mote difficult to control when functional chemicals are sprayed than when they are appHed by a size press. Eunctional chemicals also can be appHed to heavier grades of paper or paperboard at the calender stack. 

Application of Wet-Strength Resins. Wet-strength resins seldom are appHed to the surface of paper for enhancing wet strength because the commercially available, cationic wet-strength resins are retained so effectively internally. However, wet-strength resins are appHed frequendy to the surface of towels and tissues as creping aids. 

Packaging Corrugated board manufacture Carton side-seam and closures (including glue lap and case sealing) Composite bonding of disposable products (towel and tissue laminating, pick up and tail-tie diapers, sanitary napkins, hospital supplies)... 

Rewetting agent for paper towels and tissue dried kraft pulp, paper-mill felts. An excellent pigment wetting agent. 

J. Atkins, A beginner s guide to towel and tissue, part 1 and part 2, Solutions , September 2004, p. 32 and November 2004, p.30. 

Uses Defoamer, rewetting agent for toweling and tissue machines and tor other types of paper inci. food-contact papers Features Water-based Regulatory FDA compliant... 

Uses Used in textiies rinsing agent for washing paper machine felts rewetting agent for paper towels and tissues Properties Liq. HLB 13.0 100% cone. 

Uses Surfactant, w/o emulsifier, wetting agent used in paper industry to mfg. paper towels and tissues, in solv. and dry cleaner formulations emulsifier for agric. oils and degreasers rewetting agent Features Low foaming... 

Towel and tissue Styrene acrylic Water and amine neutralizer 75-100 6000-10000 200-230... 

Secondary Fiber. Increasing costs of taw fiber, legislative mandates for recycling (qv), and avadabdity of inexpensive waste papers have contfibuted to the increased use of recycled fibers. The use of secondary fiber in the United States has grown from 22% of pulp from all sources in 1978 to close to 31% (24 x 10 metric tons) in 1993 (3). Recycled fibers ate sometimes used in special writing papers, but the principal use is for the manufacture of linetboatd, newsprint, tissue, cereal boxes, towels, and molded paper products such as paper plates and egg cartons (see Packaging materials, containers AND INDUSTRIAL materials). 

Another significant end-use for polyamines is in preparation of paper wet-strength resins. These are polyamide, modified formaldehyde, and polyamine resins used to improve the physical strength of tissue, toweling, and packaging paper products. The cationic formaldehyde resins include both urea—formaldehyde and melamine—formaldehyde types (248,249). Cationic functionaHty is imparted by incorporation of DETA, TETA, and/or TEPA in... 

Wet strength is a desirable attribute in many paper products including napkins, paper towels, household tissues and disposable hospital wear all of which come... 

Tissue sections (8 pan thick) are placed on Probe-on Plus slides and floated on autoclaved water on a hot plate (42°C) for 2-3 min to remove compression. The water is removed with a paper towel, and the slides are placed on a slotted glass staining dish on its side in the microwave oven. To adhere the sections, the slides are heated in a microwave... 

Ensure that all glassware has been cleaned thoroughly in detergent and then rinsed twice with distilled water. Invert the test tubes to drain never dry the inner surface with towelling or tissue. 

Paper—grocery bags, waxed paper, facial tissues, paper towels, and sanitary... 

A preferred method for freezing samples is to use strips of aluminum foil (7- to 8-mm wide and 40-mm long) with an identification pressed in at one end with a pencil and the sample sitting on the other. Remove the tissue from the 20% sucrose solution, blot on a piece of paper towel, and set on the other end of the foil. Immediately with a forceps, plunge the foil strips with the tissue into the cold isopentane (Fig. 4.2). The tissue will stick to the foil and it can be placed in a vial in the liquid nitrogen bath and is subsequently stored in a -70°C freezer in individual small tubes. For sectioning, the frozen tissue is mounted later in O.C.T. on a chuck. 

Mount coverslips onto microscope slides. Drain off excess PBS by wicking the edge on a paper towel and then dry the back with a tissue. Apply coverslip facedown onto a slide with one drop of mounting media. Incubate in the dark at 4 °C overnight to permit mounting media to fiiUy harden. 

Discuss the size of a facial tissue, a paper towel, and a sheet of toilet paper. 

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