process begins with discharge of air from an accumulator that chokes where the air enters the magazine.
Wide range of Hydrocerol chemical blowing
agents and nucleating agent masterbatches can be used for foaming most all commonly used thermoplastic resins and blends.
The third paper will describe implementation of alternative blowing
agents that improve polymer performance.
This earlier work had described thiocarbanilide's contribution to rapid viscosity development and subsequent cure rate, which are vital to entrapment of blowing
agent gases during the sponge expansion process.
According to the company, Ecomate's high solubility, low molecular weight, high blowing
efficiency, and low volatility allow for much lower use levels than either HFC-245fa or HCFC-141b.
Line of fluorochemical blowing
agents includes Formacel Z-2 (HFC-152a), FDA approved for use in PS food service and packaging foams; Formacel S (HCFC-22)used in closed-cell polyurethane and polyisocyanurate foams; and Formacel Z-4 (HFC-134a) for polyurethane systems and appliance foams, and in PS insulating board.
The Blomax 24 rotary reheat model has 24 blowing
stations and can produce up to 43,200 bottles/hr in sizes up to 1.
HCFC-141b has been the leading blowing
agent for rigid foam insulation since it replaced CFCs.
Options: Heat-setting, preferential beating, neck orientation, combined blowing
and sterile filling operation.
agents in various plasticizers for foam acrylics, EVA, PE, and vinyl.
reportedly doubles the productivity of a standard machine by blowing
two rows of bottles--one from the top and one from the bottom--simultaneously.
The growth in global polymer foam industry us is driving the demand in blowing