The invention relates to a method for checking the silanization of pale-colored fillers, where a mixture comprising at least one silanized pale-colored filler, preferably silanized silica, and comprising at least one rubber is irradiated with ultrasound waves in a frequency range of 4 to 10 MHz, preferably of 5 to 7 MHz, and the signal strength of the ultrasound waves is determined after transmission through the rubber mixture, where the relative attenuation coefficient α.sub.rel of the rubber mixture in the frequency range of the ultrasound waves is determined, the standard deviation σ of the relative attenuation coefficient α.sub.rel is determined, and α.sub.rel and σ are used for detection of incipient crosslinking of the rubber mixture.

A PBT composite material having high heat resistance and high gloss for a vehicle mirror and a method for preparing the same are provided. The PBT composite material includes 57.2-88.9 wt % of PBT, 5-20 wt % of PET, 5-20 wt % of calcium silicate, 0-10 wt % of coupling agent-modified talc, 0.1-0.3 wt % of an antioxidant, 0.5-1.5 wt % of a flowing aid and 0.5-1.0 wt % of a nucleating agent. In the preparing method, the above components are placed into an extruding machine to perform a melt plasticization, and a molten material extruded by a die head of the extruding machine is water-cooled and stretched into a stripe to be granulated. The resulting PBT composite material has an excellent heat resistance and a good surface gloss and is suitable for manufacturing a high heat-resistant and high gloss vehicle mirror.

A method for reducing an amount of a contaminant in a thermoplastic polymer comprising shearing a combination comprising a contaminated thermoplastic polymer in melt form, water, and a dispersing agent where the shearing causes a portion of the contaminant to be removed from the contaminated thermoplastic polymer (e.g. moved into an aqueous phase with the water or into another separate phase from the water and the polymer), and after shearing, separating the thermoplastic from the aqueous phase to recover thermoplastic polymer.

Technologies are described for a method of making an encapsulated reactant having a desired shape or size. The method comprises providing solid reactant particles and an encapsulating material. The encapsulating material is heated above its solidification temperature to form a molten, semi-solid, or liquid encapsulating material. The solid reactant particles are added to the molten, semi-solid, or liquid encapsulating material and mixed to disperse the solid reactant particles in the encapsulating material and form a mixture. The mixture may be extruded or formed into the desired shape or size of the encapsulated reactant, or the mixture may be solidified and extruded, granulated, shredded, ground, or pressed into the desired shape or size.

Implementations described herein are directed to forming objects including one or more layers of a polymeric material that include a magnetic material. The objects can be produced by forming one or more first layers that include a first polymeric material. The one or more first layers can be free of a magnetic material. Additionally, the object can be produced by forming one or more second layers that include a second polymeric material having a magnetic material. For example, the one or more second layers can include a polymeric material embedded with magnetic particles. The one or more first layers and the one or more second layers can be formed by extruding the first polymeric material and the second polymeric material onto a substrate according to a pattern. A magnetizing device can be used to magnetize the magnetic material included in the one or more second layers.

Implementations described herein are directed to forming objects including one or more layers of a polymeric material that include a magnetic material. The objects can be produced by forming one or more first layers that include a first polymeric material. The one or more first layers can be free of a magnetic material. Additionally, the object can be produced by forming one or more second layers that include a second polymeric material having a magnetic material. For example, the one or more second layers can include a polymeric material embedded with magnetic particles. The one or more first layers and the one or more second layers can be formed by extruding the first polymeric material and the second polymeric material onto a substrate according to a pattern. A magnetizing device can be used to magnetize the magnetic material included in the one or more second layers.

Examples of the present disclosure relate to a container. The container has a chamber for storing build material for a three-dimensional printing system. The container comprises an opening coaxial with the chamber for coupling to the three-dimensional printing system. The container is configured such that rotation of the chamber in a first direction conveys build material in the chamber to the three-dimensional printing system and rotation of the chamber in a second direction conveys the build material away from the three-dimensional printing system.

The method for manufacturing a foamed product uses a manufacturing apparatus having a plasticizing cylinder in which an introduction port for introducing a physical blowing agent into a starvation zone is formed, and an introduction speed adjustment container connected to the introduction port, wherein the manufacturing method comprises: turning a thermoplastic resin into a molten resin; introducing the physical blowing agent at a predetermined pressure into the starvation zone through the introduction speed adjustment container and maintaining the starvation zone at a predetermined pressure; setting the molten resin to a starved state; bringing the molten resin in the starved state and the pressurized fluid into contact with each other; and molding the molten resin into a foamed product. The maximum value of the inner diameter of the introduction speed adjustment container is larger than the inner diameter of the introduction port.

A package of personal care articles. Each of the personal care articles has a nonwoven substrate as a component. The nonwoven substrate can have a first surface defining a plane of the first surface and a non-regular pattern of a plurality of three-dimensional features extending outwardly from the plane of the first surface. The non-regular pattern can include a first zone of first three-dimensional features and a second zone of second three-dimensional features, wherein in at least one of the first or second zones of the plurality of three-dimensional features has a first three-dimensional feature having a first intensive property and a second three-dimensional feature having a second, different intensive property. The personal care articles can be compressed in the package.

A package of personal care articles. Each of the personal care articles has a nonwoven substrate as a component. The nonwoven substrate can have a first surface defining a plane of the first surface and a non-regular pattern of a plurality of three-dimensional features extending outwardly from the plane of the first surface. The non-regular pattern can include a first zone of first three-dimensional features and a second zone of second three-dimensional features, wherein in at least one of the first or second zones of the plurality of three-dimensional features has a first three-dimensional feature having a first intensive property and a second three-dimensional feature having a second, different intensive property. The personal care articles can be compressed in the package.