Powder paste

Methyl Salicylate.—This ester is practically identical with oil of winter-green or oil of sweet birch, both of which contain about 99 per cent, of the ester. It is also present in numerous other plants, and its artificial production is carried out on a very large scale. The artificial ester is quite suitable for replacing the natural oil, and is used to a very large extent for flavouring tooth powders, pastes, and washes, being exceedingly popular in America. The ester has the constitution... 

Extruders make pellets by forcing powders, pastes, and melts through a die followed by cutting. An 8 in. screw has a capacity of 2000 Ib/hr of molten plastic and is able to extrude tubing at 150-300 ft/min and to cut it into sizes as small as washers at 8000/min. Ring pellet extrusion mills have hole diameters of 1.6-32 mm. Production rates cover a range of 30-200 lb/(hr)(HP). 

The dosage forms applied locally to the skin are powders, paste, lotions, ointments, creams, plasters and jellies. They are used for their antiseptic, antipruritic, analgesic, local anaesthetic and other related effects. 

These are the agents or mechanical aids which are available as tooth powder, paste, or gel and used with tooth brush to cleanse and polish natural teeth. They are prepared in the form of bulk powder and containing soap or detergent and mild abrasive agent which should have maximum cleansing efficiency with minimum tooth abrasion. 

Powder cake, wetted or Powder paste, wetted with not less than 17 per cent alcohol by mass 0433... 

The following method has been described as that used in Kriimmel and Duneberg during World War II. First the crude powder paste was prepared. The ingredients comprised (weight of dry substance) ... 

The crude powder paste was conveyed to the adjacent factory in Duneberg, where it was processed into charges ready for use in the following way ... 

To suppress afterburn and minimize energy losses caused by in-leakage of cold ambient air, any holes in the heater walls, convective section, ducts, etc. should be patched. Also make sure that inspection ports are closed. Leaks can be detected on stream to a certain extent by visual inspection (crumbling chalk dust or dropping a little baking powder past a suspected leak will pinpoint the leak). 

Powders, pastes and melts are pelleted by extrusion through a die followed by cutting. Binders and lubricants may need to be incorporated in the feed, but the process usually is not feasible for... 

Extruders make pellets by forcing powders, pastes, and melts... 

J. R. Bourne, The Mixing of Powders, Pastes, and Non-Newtonian Fluids, Industrial Research Fellow Report No. 2, The Institute of Chemical Engineers, London, 1969. 

Considering a mass of ceramic powder about to be molded or pressed into shape, the forces necessary and the speeds possible are determined by mechanical properties of the diy powder, paste, or suspension. For any material, the elastic moduli for tension (Young s modulus), shear, and bulk compression are the mechanical properties of interest. These mechanical properties are schematically shown in Figure 12.1 with their defining equations. These moduli are mechanical characteristics of elastic materials in general and are applicable at relatively low applied forces for ceramic powders. At higher applied forces, nonlinear behavior results, comprising the flow of the ceramic powder particles over one another, plastic deformation of the particles, and rupture of... 

In this chapter, we described the fundamentals of suspension iheol-ogy from dilute suspensions to concentrated suspensions. Attention has been paid to interparticle forces and the structure of the suspension because these things drastically influence suspension iheology. In addition, visco-elastic properties of concentrated suspensions including ceramic pastes have been discussed. Finally, the mechanical properties of dry ceramic powders have been discussed in terms of the dJoulomb yield criterion, which gives the stress necessary for flow (or deformation) of the powder. These mechanical prc rties will be used in the next chapter to predict the ease with vdiich dry powders, pastes, and suspensions can be made into green bodies by various techniques. 

Hot forging Powder, paste Heat, high loads... 

Metal effect pigments are flake-shaped metallic particles supplied in the form of powders, pastes, pellets, suspensions or color concentrates [5.166-5.168]. Typical metal effect pigments include aluminum ( silver bronze ) and copper- and copper/zinc-alloys ( gold bronze ). 

The metal pigments, gold bronze as well as aluminum, are supplied in the form of powders, pastes (including solvents), granules (including resins), suspensions (VMPs), color concentrates or even press-ready printing inks. 

NOTE The last few inches of this cord (the end inserted in the material to be ignited) should be coated with the fast burning Black Powder paste if possible This must be done when the NOTE The string must keep the rear end of the clothespin closed so fuse is used to ignite a blasting cap that the jaws stay open and no contact Is made between the wires. 

Pasting(for round stars or powder pasted paper)... 

The part is the Core exposure", where the cover is removed with a knife to expose the core composition of the fuse to ensure ignition(Fig,90.(A)). Further devices,are made in various ways to ensure the ignition from the fuse to the bursting charge(Fig.90). (A),(B) and (C) are the most reliable methods. At (D) a piece of black powder pasted paper is bound around the end of the fuse and the upper part is twisted. This is quite simple and often used, but sometimes it causes a misfire, because the powder pasted paper often fails to catch the last fire of the fuse. Therefore (D) is not to be recommended. 

E) is the ordinary primed fuse described above. (F) is sprinkled with blackpowder grains at the pasted end and is better than (E). (G) is split at the end, but there is the risk that the core composition at the end drops away. (H) is primed with paste on (G). Never use too much paste or the core composition may be damaged by the solvent. ( ) is drilled at the side, but it is not always certain. (J) has a piece of match or twisted powder pasted paper passed through the hole, but sometimes there is a misfire due to the low quality of the match or twisted pasted paper. Moreover these additives become inert with strong compression and the fire stops at the compressed point. Therefore the match or paper must be passed through the hole quite loosely. (K) is bored cut at the end into the core... 

Then one end of the star is pasted with an ignition composition as follows Add a 10 celluloid or nitrocellulose solution in acetone(NC paste) to red thermit to form a slurry. Cover one end of the star with the slurry. Dry it well. In addition cover the red thermit with a black powder paste for safety in handling. Paste the star with Japanese paper and then paste a piece of eraarginated kraft paper on the side as shown in Fig.llS and dry it. 

Preparation of the cartridge. Make circular pieces of black powder pasted paper(pasted on one side only) with a wad cutter. The diameter is about the same as that of the inside diameter of the mortar. Take two of them and make a bag by pasting them together at the edges, placing the pasted black powder outside. Charge about 6 g of black powder grains in it and seal it with paste(Fig.127.(C)). 

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