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2. Cellulose insulation - Wikipedia

   en.wikipedia.org/wiki/Cellulose_insulation

   While in 1976 there were roughly 100 cellulose insulation firms with 125 plants in the US, by 1978 there were more than 350 firms with more than 500 plants 1. Cellulose insulation was produced locally by small manufacturers who purchased ready-to-operate machines and offered a cheap and easy low-tech production process.

3. Spray foam - Wikipedia

   en.wikipedia.org/wiki/Spray_foam

   Spray foam insulation or spray polyurethane foam (SPF) is an alternative to traditional building insulation such as fiberglass. A two-component mixture composed of isocyanate and polyol resin comes together at the tip of a gun, and forms an expanding foam that is sprayed onto roof tiles, concrete slabs, into wall cavities, or through holes ...

4. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

5. Plastic extrusion - Wikipedia

   en.wikipedia.org/wiki/Plastic_extrusion

   Blow extrusion of plastic film. The manufacture of plastic film for products such as food packages, shopping bags, and continuous sheeting is achieved using a blown film line. [5] This process is the same as a regular extrusion process up until the die. There are three main types of dies used in this process: annular (or crosshead), spider, and ...

6. What should you set your heat to in the winter? Avoid ... - AOL

   www.aol.com/finance/set-heat-winter-avoid...

   Funding is available for all kinds of other upgrades as well, such as doors, windows and insulation. More information is available at energysaver.gov . Editor's note: A version of this story was ...

7. Blowing agent - Wikipedia

   en.wikipedia.org/wiki/Blowing_agent

   A blowing agent is a substance which is capable of producing a cellular structure via a foaming process in a variety of materials that undergo hardening or phase transition, such as polymers, plastics, and metals. [1] They are typically applied when the blown material is in a liquid stage. The cellular structure in a matrix reduces density ...