Patent classifications
B29C43/34
APPARATUS AND METHOD FOR MAKING OBJECTS FROM RECYCLED POLYMERIC MATERIAL
An apparatus comprises a nozzle for supplying a flow of polymeric material, a separating element for separating a dose of polymeric material from the flow supplied by the nozzle, at least one mould for making an object by compression moulding the dose, at least one conveying element for conveying the dose separated by the separating element towards the mould. The conveying element is movable along a path in an atmospheric environment. The apparatus further comprises a recycling device intended for receiving a polymeric material to be recycled and for providing at its outfeed a melted regenerated polymeric material suitable for being moulded. The nozzle is connected to the recycling device so that the nozzle is fed with the regenerated polymeric material coming from the recycling device.
PRESSING MACHINE
A pressing machine that applies heat and pressure to a press object transported in a first direction includes a first die having a first heater, a second die having a second heater and being disposed above the first die, a support member that supports the first die and the second die, and a movement mechanism that moves the support member from a first position to a second position located in a second direction intersecting the first direction from the first position, in which the first position is the position at which the first die and the second die apply heat and pressure to the press object and the second position is the position at which the first die and the second die do not face the press object.
PRESSING MACHINE
A pressing machine that applies heat and pressure to a press object transported in a first direction includes a first die having a first heater, a second die having a second heater and being disposed above the first die, a support member that supports the first die and the second die, and a movement mechanism that moves the support member from a first position to a second position located in a second direction intersecting the first direction from the first position, in which the first position is the position at which the first die and the second die apply heat and pressure to the press object and the second position is the position at which the first die and the second die do not face the press object.
POLYIMIDE RESIN MOLDED BODY AND PRODUCTION METHOD FOR SAME
An addition reaction type polyimide resin molded body having a thickness of 5 mm or more, with a number of defects having a size of 0.5 mm or more present on the entire surface of the molded body being 1 per 100 cm.sup.2 or less. The addition reaction type polyimide resin molded body is formed by: holding a prepolymer of an addition reaction type polyimide resin at a temperature equal to or higher than a viscosity increase starting temperature of the addition reaction type polyimide resin and increasing a melt viscosity at a temperature lower by 10° C. than the viscosity increase starting temperature to 70 to 900 kPa.Math.s; grinding and mixing the addition reaction type polyimide resin to form a molding precursor; and shaping the molding precursor at a temperature equal to or higher than a heat-curing temperature of the addition reaction type polyimide resin.
POLYIMIDE RESIN MOLDED BODY AND PRODUCTION METHOD FOR SAME
An addition reaction type polyimide resin molded body having a thickness of 5 mm or more, with a number of defects having a size of 0.5 mm or more present on the entire surface of the molded body being 1 per 100 cm.sup.2 or less. The addition reaction type polyimide resin molded body is formed by: holding a prepolymer of an addition reaction type polyimide resin at a temperature equal to or higher than a viscosity increase starting temperature of the addition reaction type polyimide resin and increasing a melt viscosity at a temperature lower by 10° C. than the viscosity increase starting temperature to 70 to 900 kPa.Math.s; grinding and mixing the addition reaction type polyimide resin to form a molding precursor; and shaping the molding precursor at a temperature equal to or higher than a heat-curing temperature of the addition reaction type polyimide resin.
Molding of fiber blanks into three-dimensional fiber block articles
A fiber block molding apparatus comprising: —a mold having a lower part and an upper part forming between them a cavity for forming a fiber blank into a fiber block article upon closing the mold; —a conveyor system for receiving the fiber blank to be molded at a receiving position, transporting the fiber blank via a heater for activation of a binding agent, and delivering the heated fiber blank into the lower part of the mold at a delivery end of the conveyor system, and —a horizontal position shifting arrangement for shifting the horizontal position of the delivery end of the conveyor system relative to the lower part of the mold between a first and a second position to lay the fiber blank on the lower part of the mold.
Tablet-type epoxy resin composition for sealing semiconductor device, and semiconductor device sealed using the same
A tablet form of an epoxy resin composition for encapsulation of semiconductor elements, where the tablet form of the epoxy resin composition: (i) includes 97 wt % or more of tablets having a diameter of 0.1 mm to less than 2.8 mm and a height of 0.1 mm to less than 2.8 mm, as measured using an ASTM standard sieve; (ii) satisfies the following Equation 1,
where σD is a standard deviation of tablet diameters and σH is a standard deviation of tablet heights, as measured with respect to 50 tablets arbitrarily selected from the tablets; and (iii) the tablets have a compression density of 1.2 g/mL to 1.7 g/mL.
Polycarbonate sheet press-formed body production method
A method for producing a press-molded body of a polycarbonate sheet including resin layers (A) and (B) respectively containing a polycarbonate resin, and a high hardness resin (B) and a hard coat layer (C) sequentially stacked on at least one surface of the resin layer (A). The method includes pre-heating the polycarbonate sheet to a temperature between a glass transition point of the resin layer (A)−45° C. or higher and the glass transition point or lower; locating the pre-heated polycarbonate sheet between an upper and lower die of a mold, wherein a time period after the pre-heating is finished until the polycarbonate sheet is located between the upper and lower die of the mold is 90 seconds or shorter; and clamping the mold to press the upper and lower die to obtain the press-molded body of the polycarbonate sheet.
APPARATUS AND METHOD FOR MAKING OBJECTS BY MEANS OF COMPRESSION MOULDING
An apparatus for forming an object comprises an extruding device (2) for supplying a continuous extrudate of polymeric material, at least one separating element for cutting the continuous extrudate thereby separating a dose (6; 106) of polymeric material from the continuous extrudate, at least one mould (5; 105; 205; 305; 405) comprising a first mould part (9; 109; 209; 309) and a second mould part (8; 108; 508) which are movable relative to one another between an open position, in which the dose (6; 106) is rested on a receiving part selected from the first mould part (9; 109; 209; 309) and the second mould part (8; 108; 508), and a closed position, in which a forming chamber is defined between the first mould part (9; 109; 209; 309) and the second mould part (8; 108; 508), the forming chamber having a shape corresponding to said object. The apparatus further comprises a thermal conditioning device (11; 111; 211; 311; 411) configured to act on the dose (6; 106) while the dose (6; 106) is positioned in said at least one mould (5; 105; 205; 305; 405) and before the closed position is reached, by thermally conditioning at least one surface portion (20; 120) of the dose (6; 106) which is distinct from a resting portion (17; 117) of the dose (6; 106) which is resting on the receiving part.
APPARATUS AND METHOD FOR MAKING OBJECTS BY MEANS OF COMPRESSION MOULDING
An apparatus for forming an object comprises an extruding device (2) for supplying a continuous extrudate of polymeric material, at least one separating element for cutting the continuous extrudate thereby separating a dose (6; 106) of polymeric material from the continuous extrudate, at least one mould (5; 105; 205; 305; 405) comprising a first mould part (9; 109; 209; 309) and a second mould part (8; 108; 508) which are movable relative to one another between an open position, in which the dose (6; 106) is rested on a receiving part selected from the first mould part (9; 109; 209; 309) and the second mould part (8; 108; 508), and a closed position, in which a forming chamber is defined between the first mould part (9; 109; 209; 309) and the second mould part (8; 108; 508), the forming chamber having a shape corresponding to said object. The apparatus further comprises a thermal conditioning device (11; 111; 211; 311; 411) configured to act on the dose (6; 106) while the dose (6; 106) is positioned in said at least one mould (5; 105; 205; 305; 405) and before the closed position is reached, by thermally conditioning at least one surface portion (20; 120) of the dose (6; 106) which is distinct from a resting portion (17; 117) of the dose (6; 106) which is resting on the receiving part.