Egg cartons

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). 

FIGURE 7.30 Poly(a -L-guluroiiate) strands dimerize in the presence of Ca"", forming a structure known as an egg carton. ... 

Packaging (food, medical devices, egg cartons, dairy containers, meat and produce trays, electronic devices, tools, dinnerware, picnic dishes, drinking cups, lids, etc.)... 

If financially feasible, suggest the use of commerdally available drug organizers. If the patient cannot afford drug organizers, egg cartons or a muffin tin can be labeled and used as drug organize s. 

For many uses, it is foamed and made into egg cartons, disposable plates and cups, food trays, packing materials, etc. 

We can plot both equations as surfaces, the function value z as a function of x and y. The first function, z=sin(jvj+cos(y)-0.5, is an egg carton like surface with many solutions z=0, see Figure 3-24. The second surface, z=xe u -2, is much less structured, Figure 3-25. 

Use tape or a permanent marker to label the outside of nine wells of your egg carton with the nine different half-cells. Each well should correspond to one of the eight different metal/metal ion pairs Mg/Mg ", Cu/Cu, A1/AP+, Ni/Ni h Zn/Zn2+, Sn/Sn2+, Fe/Fe, and Ag/Ag. Label the ninth well H /H2. 

Pour 5 mL of each metal salt solution into the appropriate well of the egg carton. Pour 5 mL of the nitric acid into the well labelled H+/H2. 

Rinse off the metals and the graphite rod with water. Dispose of the salt solutions into the heavy metal salts container your teacher has set aside. Rinse out your egg carton. Remove and discard the plugs of the salt bridge, and dispose of the KNO3 solution as directed by your teacher. Return all your materials to their appropriate locations. 

A popular, related technique is to inject some sort of a volatile material into the polymer while it s still molten, causing it to foam immediately. Fluorocarbons are used this way in making polyurethane foams suitable for insulation. The trapped fluorocarbon is even better than air as an insulator. Fluorocarbon or air is used to expand PS foams also. The gas is injected as the molten polymer is forced through a die. The foamed PS is then immediately injected into a mold to make items like egg cartons and trays for meats, produce, or fast-food. 

Some important everyday items that are made from polymers with widely different properties Include billiard balls, plastic dishes, soda bottles, barrier and decorative films, egg cartons, polymeric drinking glasses, foam seats, and automotive tires. These applications for synthetic polymers have developed over about 150 years. As shown in Table 2.1, modern polymer material science and technology can be traced back to as early as 1770 [1]. Some Important advances In the understanding of polymer production were developed before World War II. 

Woody prunings, evergreen hedge clippings Cardboard tubes, egg cartons Crumpled paper and newspaper... 

Mix in moisture-absorbing materiais, such as newspaper, egg cartons, paper toweis, and cardboard tubes. Add a sprinkiing of iimestone and ciear any drainage hoies. If on investigation you cannot see any active worms at aii, you wiii have to assume that they are dead. Ciear out the bin and start again. 

Homemade pots and seed trays Foil carry-out containers, deli and margarine tubs, polystyrene coffee cups, and yogurt cartons can all be used. Clean them thoroughly and make holes in the bottom. Egg cartons can be used as module trays. Toilet paper rolls and homemade paper tubes can be planted along with the plant and are useful for plants that resent root disturbance. 

Seed potatoes usually appear in nurseries, or are shipped by mailorder suppliers, in late winter to early spring, in order that they may be "chitted" for a few weeks before planting out. Lay out the tubers in shallow trays—egg cartons near right) are ideal. Place the end with the most "eyes" (dormant buds) uppermost. Put them in a light, warm place until they sprout. Once frost has become rare and the soil has warmed up, plant them out far right) with the sprouted end uppermost. 

PS is used to make a wide variety of containers, including those known as Styrofoam plates, dishes, cups, etc. Cups, yogurt containers, egg cartons, meat trays, and plates are made from PS. 

Packaging and insulation foams, lighting panels, appliance and furniture components, egg cartons... 

Dry the petals in an empty egg carton (lined with plastic wrap) so that each petal can curve slightly or set a drinking glass on its side, cover it with plastic wrap, and dry the petals on the curved glass. 

After you rub each petal, let it dry upside down to achieve a beautiful sculpted look. I dry flowers on recycled egg cartons—they are the perfect shape, and depending on which side you use, you can achieve a larger, more open-faced flower or a tighter, closed flower. And because the cartons stack well, they re easy to store. 

Preheat the oven to l8o°F. Place the sugar-paste petals on paper egg cartons on a baking sheet, and bake for 1/2 hour. Turn the off oven and let the flowers cool inside the oven, up to I hour. Unfortunately, humidity seems to keep sugar flowers soft, so if you re working on a humid day, let the flowers dry out as long as possible in the oven and decorate the cake close to the serving time. 

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