摘要:
There is provided a support platform of a non-contact transfer apparatus. The support platform of a non-contact transfer apparatus includes a plurality of first holes each having a plurality of sub-holes arranged in a radial direction and a plurality of second holes arranged in a line proximate the first holes.
摘要:
Provided is a support platform of a non-contact transfer apparatus. The support platform is arranged horizontally and includes first and second members adding a lift force to a first force for lifting peripheral portions of a transferred object, wherein the first force is lower than a second force lifting a central portion of the transferred object.
摘要:
There is provided a support platform of a non-contact transfer apparatus. The support platform includes a plurality of first holes for introducing air on a surface of the support platform, and a plurality of second holes for removing the air introduced through the first holes. At least one of a size and a number of the first holes varies in a direction from a central portion of the support platform to peripheral portions of the support platform, and the second holes are identically formed to one another.
摘要:
A polymeric foam has a thermoplastic polymer matrix defining multiple cells, the foam characterized by: (a) the polymer matrix having greater than 50 weight-percent copolymer containing at least two different monomers at least one of which is a methacrylate monomer, each monomer having a solubility parameter lower than 20 (megaPascals)0.5 and a chemical composition where twice the mass fraction of oxygen plus the mass fraction of nitrogen, fluorine and silicon is greater than 0.2; wherein the monomers comprise at least 90 weight-percent of all monomers in the copolymer; (b) at least one of the following: (i) a nucleation site density of at least 3×1014 effective nucleation sites per cubic centimeter of foamable polymer composition; (ii) an average cell size of 300 nanometer or less; (c) a porosity percentage greater than 30%; (d) an absence of nano-sized nucleating additive; and (e) a thickness of at least one millimeter.
摘要:
A polymeric foam has a thermoplastic polymer matrix defining multiple cells, the foam characterized by: (a) the polymer matrix having greater than 50 weight-percent copolymer containing at least two different monomers at least one of which is a methacrylate monomer, each monomer having a solubility parameter lower than 20 (megaPascals)0.5 and a chemical composition where twice the mass fraction of oxygen plus the mass fraction of nitrogen, fluorine and silicon is greater than 0.2; wherein the monomers comprise at least 90 weight-percent of all monomers in the copolymer; (b) at least one of the following: (i) a nucleation site density of at least 3×1014 effective nucleation sites per cubic centimeter of foamable polymer composition; (ii) an average cell size of 300 nanometer or less; (c) a porosity percentage greater than 30%; (d) an absence of nano-sized nucleating additive; and (e) a thickness of at least one millimeter.