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2. List of polyurethane applications - Wikipedia

   en.wikipedia.org/wiki/List_of_polyurethane...

   Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...

3. Plastic extrusion - Wikipedia

   en.wikipedia.org/wiki/Plastic_extrusion

   A common post-extrusion process for plastic sheet stock is thermoforming, where the sheet is heated until soft (plastic), and formed via a mold into a new shape. When vacuum is used, this is often described as vacuum forming. Orientation (i.e. ability/ available density of the sheet to be drawn to the mold which can vary in depths from 1 to 36 ...

4. Polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_chloride

   Polyvinyl chloride is formed in flat sheets in a variety of thicknesses and colors. As flat sheets, PVC is often expanded to create voids in the interior of the material, providing additional thickness without additional weight and minimal extra cost (see closed-cell PVC foamboard). Sheets are cut using saws and rotary cutting equipment.

5. Glass-filled polymer - Wikipedia

   en.wikipedia.org/wiki/Glass-filled_polymer

   Glass-filled polymer (or glass-filled plastic), is a mouldable composite material. It comprises short glass fibers in a matrix of a polymer material. It is used to manufacture a wide range of structural components by injection or compression moulding . [ 1 ]

6. Skyline (construction set) - Wikipedia

   en.wikipedia.org/wiki/Skyline_(construction_set)

   The step blocks were also used in other parts of the structures. The pieces all tend to be fairly durable except for the columns, which tend to have sides broken off with many years of use. The roofing and floor bases were basic thin plastic sheets with a checker board motif in white and brown to one side and blank white on the other.

7. 21 Vintage Photos of Christmas Window Displays From the Last ...

   www.aol.com/21-vintage-photos-christmas-window...

   Take a trip down memory lane with by looking at these incredible photos of Christmas window displays from the last 100 years,