This invention relates generally to the packaging and preservation of granular products. More specifically, the invention relates to an apparatus and method for flushing undesirable residual gases from a flow of granular product during a packaging of the product, the displacement of the undesirable gases from the product preserving the product's freshness.

An architectural resin panel that incorporates plastic granules fused together to form a panel core. A portion of the plastic granules are contaminant granules that at least partially include a contaminant material, such as a piece of fabric, plastic film, or plant material. The granules used to form the panel core may be sourced from waste plastic material that would otherwise be required to undergo waste processing.

A process for reducing the volatile organic compound content of granular plastomers having a density of equal to or lower than 883 kg/m.sup.3 and a MFR.sub.2 of 100.0 g/10 min or lower (ISO 1133 at 2.16 kg load and 190° C.), to below 65 ppm (VOC, VDA277), the process comprising the steps of providing a granular raw plastomer in a treatment vessel, the granular raw plastomer having a density of equal to or lower than 883 kg/m.sup.3, and a MFR.sub.2 of 100.0 g/10 min or lower (ISO 1133 at 2.16 kg load and 190° C.), and a volatile organic compound content (VOC, VDA277) of above 150 ppm, subjecting said granular raw plastomer to a gasflow within the range of 30 m.sup.3/(h t) to 150 m.sup.3/(h t) for an aeration time of less than 96 hours, whereby the gas has a minimum temperature of at least 26° C. measured at a gas inlet of the treatment vessel and a maximum temperature of 4° C. below the Vicat temperature (10 N, ISO 306) of the granular raw plastomer or 35° C. measured at the gas inlet of the treatment vessel, whatever value is lower; and recovering the granular plastomer.

The present invention relates to a device to increase intrinsic viscosity of recycling polyester waste, first, shredding the recycled polyester waste, pouring the shredded polyester waste into a melting unit for smelting for achieving melting status, after filtration, pouring the semi-finished pellet into a reactor tank, the molecular chain of the melting polyester will depolymerize to a shorter molecular chain and further repolymerize to a molecular chain fitting the requirement, and using a vacuum unit to remove the organic impurity, moisture and dirt for increasing the intrinsic viscosity of the semi-finished pellet to make intrinsic viscosity be higher than 0.65 dl/g; by processing with the reactor tank, the present invention increases intrinsic viscosity of recycling polyester waste by changing the I.V. of the RPET and the structure of the molecular chain, enhancing the quality of the RPET for increasing applicability and economic benefits of RPET.

Methods of recovering and/or recycling expanded polymer tooling, the methods including collecting expanded polymer tooling, reducing the collected expanded polymer tooling into smaller particles, treating the reduced expanded polymer tooling in order to yield an at least partially purified recovered polymer composition, and then collecting the at least partially purified recovered polymer composition. The at least partially purified recovered polymer composition can then be used to form new expandable polymer tooling.

Method for the preparation of dried polymer pellets in a facility having a dryer with a first chamber and a mechanical agitator, and the facility further having a degassing silo with a second chamber, the method includes the steps of guiding a drying gas flow made from or containing a first gas mixture for drying wet polymer pellets into the first chamber, transferring the dried polymer pellets into the second chamber, guiding a second gas mixture for degassing the dried polymer pellets into the second chamber thereby transforming the second gas mixture into a third gas mixture and guiding a portion of the third gas mixture into the first chamber; and process for manufacturing LDPE pellets.

A process for preparing an olefin polymer, including the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C.sub.3-C.sub.5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas made from or containing a C.sub.3-C.sub.5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.

The present invention relates to a process for reducing the volatile organic compound (VOC) content of plastomers the process comprising the steps of subjecting the plastomer in granular form containing VOCs which is contained in an aeration vessel to a gasflow, and withdrawing granular plastomer from the aeration vessel which has a lower content of VOCs, wherein the average particle size of the granular plastomer is greater than 2.5 mm, preferably greater than 2.7 mm, more preferably greater than 3.0 mm, wherein the gas has a minimum temperature of at least 26° C. measured at a gas inlet of the aeration vessel, and a maximum temperature of 4° C. below the Vicat temperature (10N, ISO 306) of the granular plastomer or 35° C. measured at the gas inlet of the aeration vessel, whatever value is lower, and wherein at least a part of the withdrawn granular plastomer is recirculated to the aeration vessel.

A powder composition suitable for laser sintering for printing a three-dimensional object obtained by pre-heating a raw PEKK to evaporate a liquid solvent in the raw PEKK and the grinding the raw PEKK to form a PEKK powder, the powder composition having a first fraction comprising a polyetherketoneketone (PEKK) powder having a plurality of particles, the plurality of particles having a mean diameter D50 in the range of 30 μm to 150 μm. The plurality of particles of the first fraction are substantially non-spherical.

Systems and methods are provided for making aggregate from comingled waste plastics. For example, there is provided a method of making a preconditioned absorptive resin aggregate, the method including: obtaining a supply of granulated mixed plastic waste treated with a preconditioning agent that comprises at least one of calcium oxide and calcium hydroxide; mixing the supply of granulated mixed plastic waste treated with the calcium oxide preconditioning agent with one or more additives to form a plastic waste mixture, the one or more additives comprising pozzolans; hot extruding the plastic waste mixture to form an extruded product comprising waste plastic material; cooling the extruded product; and processing the extruded product to form an aggregate. Products incorporating such aggregates, such as, for example, lightweight construction blocks, are also provided. Also provided are methods of forming a waste plastics feedstock.