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US 6,730,378 B2Granted
Resin-molded article and process for producing the same
AssigneeToray Industries, Inc.
InventorsHideo Matsuoka, Mitsushige Hamaguchi, Kazuhiko Kobayashi
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AssigneeToray Industries, Inc.
InventorsHideo Matsuoka, Mitsushige Hamaguchi, Kazuhiko Kobayashi
Estimating the term…
In the resin-molded articles comprising polyolefin resins (a) and thermoplastic resins other than the polyolefin resins (b), when thickness is defined as one along a direction vertical to the surface of the article, as morphology observed under an electron microscope in the article, a portion where the polyolefin resin (a) forms a continuous phase (A), a portion where the resin other than the polyolefin resin (b) forms the continuous phase and the polyolefin resin (a) forms a discontinuous phase (B), and a portion where the polyolefin resin (a) forms the continuous phase (A) are successively observed in order from the surface toward the inside along the thickness direction, such molded articles having nature such as toughness and fabrication quality inherent to the polyolefin resins and improved appreciably in resistance to permeation of liquid chemicals and gases.
A resin-molded article comprising a polyolefin resin (a) and a thermoplastic resin other than the polyolefin resin (b) having a morphology observed under an electron microscope in the resin-molded article in a thickness direction of the article comprising a portion (A) where the polyolefin resin (a) forms a continuous phase and the resin other than the poly olefin resin (b) forms a continuous or discontinuous phase, a portion (B) where the poly olefin resin (a) forms a discontinuous phase and the resin other than the poly olefin resin (b) forms a continuous phase, and a portion (A) where the poly olefin resin (a) forms a continuous phase and the resin other than the poly olefin resin (b) forms a continuous or discontinuous phase, and the portions are successively observed in order from one surface toward an opposed surface in the thickness direction.
A process for forming the resin-molded article by melt molding a resin composition comprising 20 to 80 weight percent of the polyolefin resin (a) and 80 to 20 weight percent of the thermoplastic resin other than the polyolefin resin (b) wherein the melt viscosity ratio defined by the following formula (1) at a fabricating temperature is 0.5 or less at a shear rate of 200 sec−1 or less and 0.8 or more at a shear rate of 1000 sec−1 or more:
Dependencies are inferred from the claim text.