A flexible discontinuous process produces a series of at least two articles containing thermally insulating polyurethane foam from at least three streams (A), (B) and (C). The process involves mixing the at least three streams with different mixing ratios and injecting the mixture into cavities of the articles. A production unit can be used for performing this process.

The invention relates to a process for the production of articles, exemplarily a plastic article, by means of an extruder (1) to which a first plastic composition of a first main component and at least one associated minor component is supplied from a first group of dosing stations (21, 24). According to the invention, during the production time of a first production order there is prepared a second group of dosing stations (31, 33) at the extruder for a second production order for which a second plastic composition of a second main component and at least one associated minor component that is different from the first plastic composition has to be supplied to the extruder. After completion of the first production order it is reset to the second production order by terminating the supply of the first plastic composition by closing a first shut-off device (8) and starting the supply of the second plastic composition by opening a second shut-off device (8′).

A device for producing a dyed plastic melt and an undyed plastic melt includes a multi-shaft screw extruder, a first metering installation, a second metering installation, and a control installation for selecting between a first operating mode for producing the dyed plastic melt and a second operating mode for producing the undyed plastic melt. The first metering installation serves for feeding an undyed plastic material through a first infeed opening into a housing of the multi-shaft screw extruder, and the second metering installation serves for feeding at least one color granulate through a second infeed opening into the housing. The plastic material is fed exclusively by way of the first infeed opening such that residual color granulate or dyeing agent contained therein, respectively, which is still located in the second metering installation or in the region of the second infeed opening does not contaminate the undyed plastic melt.

The present invention relates to an injection molded product including a thermoplastic resin and a fibrous filler, wherein the thermoplastic resin includes at least 10% by mass of at least one selected from the group consisting of polypropylene and liquid crystal polyesters based on the total amount of the thermoplastic resin, the proportion of the fibrous filler having a fiber length of 1 mm or less in the injection molded product is 40% by mass or less based on the total amount of the fibrous filler, and a vertical-horizontal plane area of a test piece after ashing, which is determined by a specific ashing test, is at least 3.5 times the vertical-horizontal plane area of the test piece before ashing.

The fluid feeding system includes a feed channel connected to the discharging device, a pump connected to the feed channel, a valve for blocking a flow of the fluid that flows toward the introduction chamber via the feed channel, and a control device for determining a pressure state on the pump side and carrying out an opening-and-closing control of the valve 70 based on the determination result. The control device carries out the opening-and-closing control in which the valve is made into an open state when the control device determines that a pressure P1 on the pump side reaches a pressure state exceeding a given pressure.

An apparatus and process or mixing granules and/or powders and/or liquids in rubber production plants, including: a mixer/extruder device for the production of a basic heterogeneous mixture; a plurality of distribution lines associated with said mixer/extruder device to supply the device itself with respective powdered and/or granulated and/or liquid products; the mixer/extruder device mixing the powdered and/or granulated and/or liquid products to obtain said heterogeneous mixture; at least one distribution line of a powdered product includes a pre-mixer arranged upstream of said mixer/extruder device to pre-mix said powdered product with at least one liquid product, preferably oil.

A self-cleaning dosing apparatus includes a material hopper for containing pellets of material, a feed screw, a first material outlet through which pellets of material fall by gravity onto a first end of the feed screw for the feeding of pellets to a process machine. A second material outlet is located beneath the first end of the feed screw, with a slide gate blocking the second material outlet. A pneumatic piston is provided for pulling the slide gate to unblock the second material outlet, and a Venturi pump is located under the second material outlet for pulling pellets through the second material outlet when the slide gate is opened.

A fluid delivery system includes a status indicator and control system comprising a processor. The processor is configured to receive a first signal indicative of a first status of operations of a spray application system. The processor is further configured to provide to an operator of a spray gun, via a display system, a visualization representative of the first status of operations, and techniques to control the fluid delivery system, wherein the spray application system is configured to deliver at least one fluid to the spray gun during operations.

A mixing apparatus includes: a first introduction port that is provided on a further upstream side than a mix acceleration part in a mixer tube and allows introduction of a liquid agent; a second introduction port that is provided on the further upstream side than the mix acceleration part in the mixer tube and allows introduction of a substance for removing the liquid agent; and a piston that is provided on the upstream side of the mixer tube and that opens one of the first introduction port and the second introduction port and closes another of the first introduction port and the second introduction port by stroking in the axis direction of the mixer tube.

A manufacturing apparatus for a molded product of a fiber-reinforced resin includes: a heating tube; a screw inserted in the heating tube; an injector provided on a front end side of the screw; a resin feeder configured to feed a matrix resin into the heating tube; a long-fiber feeder configured to feed a long fiber into the heating tube; and a short-fiber feeder configured to feed a short fiber shorter than the long fiber into the heating tube. The short-fiber feeder is closer to a rear end of the screw than the long-fiber feeder is.