Apparatus 2 for dosing a liquid colour formulation into polymer includes a weighing platform 4 which is supported on a pair of load cells 6 which are, in turn, supported on a base 8. A reservoir 12 contains liquid colour formulation 14. A pump 16 is arranged to pump liquid formulation, via a tube 20, to an extruder or injection moulding machine. Above inlet 24 is a delivery pack 26 which includes a bag-in-a-box arrangement 28. The delivery pack 26 includes a transfer pump 36 associated with an outlet of the receptacle 32. A transfer pump motor 38 is arranged to be engaged with the transfer pump 36 and operated so that liquid formulation can be pumped from the receptacle 32 into reservoir 12 across an air gap 13 defined between the transfer pump 36 and the inlet 24 of reservoir 12. There is no pipe, tube or other conduit through which liquid formulation passes on travel between delivery pack 26 and reservoir 12.

Methods and systems of delivering liquid additives in a molding system are provided. A charging sensor is provided to monitor the status of the injection charging mechanism of the molding system which charges, meters or doses an injection volume of molding material. A dosing instruction is generated based on the charging status signal. The additive pump controls the delivering of the liquid additives into the injection unit based on the dosing instruction, while the injection charging mechanism is charging the injection volume of molding material.

An additive injection system for use in injection molding machines to inject additive materials, such as fluids or powders, downstream of a nozzle of the injection molding machine. The additive injection unit has an additive tank to store or contain additive material and additive injectors that inject an additive material into an injection molding machine. A pump pumps the additive material from the tank through a common manifold connected to the additive injectors to be injected into the injection molding machine. A controller controls operation of the additive injection device and one or more sensors coupled to the additive injection device can provide feedback to the controller.

Injection molding plastic parts includes furnishing resin material to a screw barrel having a rotatable screw therewithin, rotating the screw to work the resin material into a molten state, furnishing additive such as liquid color or another additive to the screw barrel interior at a first rate during screw rotation and driving the screw longitudinally from a first position to a second position to force an additive-resin material mixture resulting from screw rotation into a mold while furnishing additive with resin to the screw barrel interior at a second additive addition rate.

An additive feeder system is presented which is operable for use in a plastic injection molding machine including an injection component and a clamping component. The additive feeder system includes a feeder control unit, a feeder supply mechanism and feeder dosage control mechanism. The additive feeder system is operable to provide a specific dosage of the additive materiel in real-time for mixing with the raw material to achieve desired product characteristics. The additive feeder system may be applied to injection molding and extrusion, such as molding processes, plastic molding processes, blow molding, compression molding, extrusion molding, injection molding and laminating, and comprising additive feeders, for example for color mixing and nutrient supplements.

Blowing agent introduction polymeric foam processing methods and systems are described herein.

An additive injection system for use in injection molding machines to inject additive materials, such as fluids or powders, downstream of a nozzle of the injection molding machine. The additive injection unit has an additive tank to store or contain additive material and additive injectors that inject an additive material into an injection molding machine. A pump pumps the additive material from the tank through a common manifold connected to the additive injectors to be injected into the injection molding machine. A controller controls operation of the additive injection device and one or more sensors coupled to the additive injection device can provide feedback to the controller.

Disclosed are a system and method tuning PET raw material processing process by employing real time process management and machine learning steps and reactive addition of dosing of homogenizing composition for impregnating chain extenders and compatibilizing agents in thermoplastic resin using the liquid additive as a carrier into the process for modifying material performance. The properties of PET blend are no longer fixed once dry-blending and melting is complete.

An additive feeder system is presented which is operable for use in a plastic injection molding machine including an injection component and a clamping component. The additive feeder system includes a feeder control unit, a feeder supply mechanism and feeder dosage control mechanism. The additive feeder system is operable to provide a specific dosage of the additive materiel in real-time for mixing with the raw material to achieve desired product characteristics. The additive feeder system may be applied to injection molding and extrusion, such as molding processes, plastic molding processes, blow molding, compression molding, extrusion molding, injection molding and laminating, and comprising additive feeders, for example for color mixing and nutrient supplements.

Controllability of an input amount of a filler is improved to manufacture a molded substance having higher performance. The molded substance is manufactured by using an injection molding machine including: a cylinder 11 having a supply port 13h which is located upstream and through which a resin pellet RP is supplied and a supply port 15h which is located downstream of the supply port 13h and through which a filler F is supplied; a screw S disposed inside the cylinder; and a cutting machine 15. The cutting machine 15 continuously cuts a thread-state fiber (roving R) to a constant length, and inputs cut fiber pieces (filler F) into the supply port 15h.