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This is a list of insulation materials used around the world. ... 20–26 Cellulose wet-spray [14] 2.54: 1 0.52–0.67: 3–3.8: 20–26 Rock and slag wool loose-fill ...
Cellulose insulating material plants are used for the production of naturally insulating material out of raw material like newspapers, hemp, field grass and so forth.The insulating materials which are produced with this systems, are characterized by low energy input during the production compared to the conventional insulating materials such as mineral wool etc.
A small quantity of polyolefin is melted as an adhesive to bind the product together (and is preferable to formaldehyde adhesives). Installation is similar to fiberglass, without the need for a respirator but requiring some additional time to cut the material. Cotton insulation costs about 10-20% more than fiberglass insulation. [23]
The cellulose insulation lost 26.4% less heat energy over time compared to the fiberglass insulation. It also was shown to tighten the structure more than 30%. [ 8 ] Subsequent real world surveys have cellulose performing 20–30% better at reducing energy used for heating than fiberglass.
After a four-year period of rapidly rising prices, pulp manufacturers then faced eroding profit margins due to worldwide economic problems and larger than normal inventories. Although LP saw its own pulp sales and profits peak in mid-1989 and expected only a minor recovery in 1991, the company continued to operate three pulp manufacturing mills.
Thermal insulation is the reduction of heat transfer (i.e., the transfer of thermal energy between objects of differing temperature) between objects in thermal contact or in range of radiative influence. [1] Thermal insulation can be achieved with specially engineered methods or processes, as well as with suitable object shapes and materials.