frost line

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Related to Frostline: Freezing depth

frost line

The depth of frost penetration into the soil.It varies from area to area,depending on the soil quality in a particular location, but can average 3 to 4 feet below the surface. Building foundations should penetrate below the frost line in order to avoid the shifting caused by frost heaving. Many local building codes allow an exception with the use of a frost-protected shallow foundation, which uses insulation and drainage techniques to raise the frost line to just below the surface.

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Accessories include blenders, vacuum loaders, air chillers, treaters, web guides, gravimetric extrusion-control systems, automatic transverse-direction gauge-profile control system, layflat-width control systems, and frostline height control system.
EXTRUSION SYSTEMS
The Blown Film Extrusion Simulator is said to show realistic interaction among screw speed, nip speed, and cooling air on bubble dimensions, thickness, and frostline. Introduced at ANTEC 2000 in Orlando, it should be commercial early next year.
Operators Train on 'Virtual' Extruders
So, to maximize barrier, extrude PE blown film with a high BUR, high frostline, and narrow die gap.
Keep it dry: optimize moisture barrier in PE films
Its TC-50B, HD system for HDPE has a new computer system for HDPE has a new computer system that controls layflat width by means of an electric eye, throughput rate and average film thickness by gravimetric feeding control, and frostline position by means of optical sensing and cooling-air regulation.
All the news from Tokyo - part II

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