摘要:
A plastic pressurized package comprising a hollow, plastic, substantially non-round cross-section body, comprising a polymer selected from the group consisting of polyamides, polyesters, polyester copolymers, polycarbonates, polyacrylates, polycarbonate copolymers, and mixtures thereof wherein said plastic pressurized package is able to contain and dispense a pressurized fluid of at least about 15 psi greater than atmospheric pressure at 25° C.
摘要:
A plastic pressurized package comprising a hollow, plastic body comprising a blend of a first and second material, said first material comprising a polymer selected from the group consisting of polyesters, polyester copolymers, and mixtures thereof and said second material comprising a polymer selected from the group consisting of polycarbonate, polycarbonate copolymers, and mixtures thereof and wherein said plastic pressurized package is able to contain and dispense a pressurized fluid of at least about 15 psi greater than atmospheric pressure at 25° C.
摘要:
A substantially constant pressure injection molding method and machine that forms molded parts by injecting molten thermoplastic material into a mold cavity at a substantially constant pressures. As a result, the mold cavity is filled with molten thermoplastic material by advancing a continuous flow front of thermoplastic material from a gate to an end of the mold cavity.
摘要:
The present invention provides a heat-treated plastic pressurized container that is resistant to polar liquids and impact stresses and the process for making such container.
摘要:
A substantially constant pressure injection molding method and machine that forms molded parts by injecting molten thermoplastic material into a mold cavity at a substantially constant pressures. As a result, the mold cavity is filled with molten thermoplastic material by advancing a continuous flow front of thermoplastic material from a gate to an end of the mold cavity.
摘要:
A substantially constant pressure injection molding method and machine that forms molded parts by injecting molten thermoplastic material into a mold cavity at a substantially constant pressure. As a result, the mold cavity is filled with molten thermoplastic material by advancing a continuous flow front of thermoplastic material from a gate to an end of the mold cavity.
摘要:
A low constant pressure injection molding machine forms molded parts by injecting molten thermoplastic material into a mold cavity at low substantially constant pressures of 6,000 psi and less. As a result, the low constant pressure injection molding machine includes a mold formed of easily machineable material that is less costly and faster to manufacture than typical injection molds.
摘要:
A low constant pressure injection molding machine forms molded parts by injecting molten thermoplastic material into a mold cavity at low constant pressures of 6,000 psi and lower. As a result, the low constant pressure injection molding machine includes a mold formed of easily machineable material that is less costly and faster to manufacture than typical injection molds.
摘要:
Disclosed herein are methods of injection molding at low, substantially constant melt pressures. Embodiments of the disclosed method now make possible a method of injection molding that is more energy—and cost—effective than conventional high-velocity injection molding processes. Embodiments of the disclosed method surprisingly allow for the filling of a mold cavity at low melt pressure without undesirable premature hardening of the thermoplastic material in the mold cavity and without the need for maintaining a constant temperature or heated mold cavity. Heretofore, it would not have been expected that a constant pressure method could be performed at low pressure without such premature hardening of the thermoplastic material when using an unheated mold cavity or cooled mold cavity.