Floating knife

Application of controlled amounts of foam to the substrate is by knife-on-roller, knife-on-blanket, floating knife, horizontal pad or furnishing roller with doctor blade, or by squeegee across a printing screen. 

Knife Over-Roll Coater Horizontal Pad Coating Floating Knife Coater Extrusion Coating... 

In cases where either of these techniques would adversely affect the esthetics of the face of the fabric, the foamed finish can be applied to the back of the fabric by means of a floating knife. 

REZTHANES 1980A 1980B, aqueous polyurethane base or single coat, is designed for knife over roll or floating knife application on goods normally coated with solvent coatings where either recovery or protected environment is in place. 

Figure 18. Gerstenberg Agger floating knife mutator shaft system for Perfector type (2+2)x 92R. (Courtesy of Gerstenberg Agger A/S, Copenhagen, Denmark.)...

Sodium is a soft, wax-like silver metal that oxidizes in air. Its density is 0.9674 g/cm, and therefore it floats on water as it reacts with the water releasing hydrogen. It has a rather low melting point (97.6°C) and a boiling point of 883°C. Sodium is an excellent conductor of heat and electricity. It looks much like aluminum but is much softer and can be cut with a knife like butter. Its oxidation state is +1. 

Paraffin blocks are trimmed with a scalpel, a razor blade, or a hot spatula and mounted on wooden or fiber blocks. While being sectioned, longitudinal block edges must be parallel to the knife edge to obtain a ribbon. Paraffin sections of any thickness show compression, which is usually relieved when they are floated on a glass slide and dried. 

CAUTION The small scraps of metal that adhere to the knife or float on top of the xylene are most likely to start a fire.5... 

Attack the floating ribs from either the front or rear, but, if possible, strike the blow to your opponent s right side. The liver is located here just below the ribs, and the blow causes terrific shock to this organ. Attack this area with the knife edge of your hand (fig. 2B), the outside edge of your fist, the knuckles folded at the second joints, the heel, the toe, or the knee. 

Which of the following are chemical properties, and which are physical properties (a) Metallic sodium is soft enough to be cut with a knife, (b) When sodium metal is cut, the surface is at first shiny after a few seconds of exposure to air, it turns a dull gray, (c) The density of sodium is 0.97 g/mL. (d) Cork floats on water, (e) When sodium comes in contact with water, it melts, evolves a flammable gas, and eventually disappears altogether, (f) Household bleach changes the color of your favorite T-shirt from purple to pink. 

Sodium, element number 11, is a soft and silvery gray metal with a density of 0.97 g/cm3. Since this value is less than the density of water, sodium metal floats (although it reacts violently with the water upon contact). Sodium is so soft that it can be cut and shaped with a butter knife. It is the most abundant of the alkali metals, readily obtained from seawater, and used in a large number of applications. Of all the alkali metals, sodium metal is the one produced and used in industry in greatest quantity. 

Having melted some of the metal bismuth in an iron ladle, remove, by means of a knife or otherwise, the dross or scum that floats on the top, then allow it to rest until a crust of hard metal is formed on the surface. As soon as that is done make a hole in the edge of this crust and pour o Ff the metal that still remains in the centre of the mass when it is quite cold, remove the upper crust by means of a file, and if the experiment has been properly carried out, the inside of the mass will be found covered with a group of beautiful crystals of bismuth, sufficiently curious and pleasing to form an interesting mantel-piece ornament. 

Lithium is the third element in the Periodic Table following helium. It is usually found in the mineral spodumene. Lithium is the lightest metal and, when isolated, so soft it can be cut with a sharp knife. The density of lithium is so low that it will float on water when laid gently on the surface. As with the rest of the alkali metals, it is very reactive in water. Generally, it is stored in oil or kerosene to prevent it from reacting. When combined with aluminum, lithium combines to form a strong alloy metal used in aircraft and spaceships. 

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