A cellulose ester composition with heat distortion temperatures greater than 90 C. is provided comprising at least one cellulose ester and optionally at least one plasticizer. The cellulose ester compositions are useful for making articles such as eyeglass frames, automotive parts, and toys are also provided.

The present application discloses cellulose ester compositions that are plasticizer free that can be processed at higher temperatures with reduced degradation. The cellulose ester compositions disclosed are useful for the preparation of articles, for example eyeglass frames, automotive parts, and toys.

An injection molding machine uses a native controller and a retrofit controller to effectively control its operation. The controllers may determine and/or receive information regarding the machine's maximum load capacity, and may also determine a current operational load value of the machine. The retrofit controller may cause the machine to operate at any number of combinations of settings of operational parameters which result in the machine operating at or below the maximum load value by adjusting any number of machine parameters associated with the injection molding machine based on feedback sensors measuring real-time operating conditions of the machine.

A molding cycle stopping method includes: in a case of stopping an operation of a molding cycle in an injection device including a heating cylinder and a screw provided in the heating cylinder, performing a temperature lowering process including lowering a temperature of the heating cylinder from a molding cycle execution temperature to a standby temperature; and performing a continuous purge process including repeatedly purging a resin until a predetermined termination condition is satisfied.

A method of adjusting a molding condition parameter of a molding machine includes determining change values of a plurality of molding condition parameters set in a molding machine in a molding process cycle, determining change timings of the plurality of parameters determined as objects to be changed with reference to timing information when the change values of the plurality of molding condition parameters are determined, and sequentially changing the plurality of parameters determined as objects to be changed according to the determined change timings.

An injection molding machine uses a controller to effectively control its operation. The controller may determine and/or receive information regarding the machine's maximum load capacity, and may also determine a current operational load value of the machine. The controller may cause the machine to operate at any number of combinations of settings of operational parameters which result in the machine operating at or below the maximum load value by adjusting any number of machine parameters associated with the injection molding machine based on feedback sensors measuring real-time operating conditions of the machine.

Provided is a controller for an injection molding machine including an injecting member configured to inject a molding material from a cylinder to a mold part, and a drive source configured to cause the injecting member to operate. The controller includes a cold-start prevention part configured to, when a first condition is met, restrict an operation of the injecting member during a cold-start prevention time that is set in advance. When the first condition is met, the cold-start prevention part determines whether or not a second condition, which is different from the first condition, is met to determine whether or not a value shorter than an initial value will be used as the cold-start prevention time.

A method for controlling temperature rise in divided heating zones of a barrel of a molding machine includes: setting tentative target temperatures for the respective heating zones; simultaneously raising temperatures in the heating zones to the set tentative target temperatures; when temperatures in the heating zones reach the respective tentative target temperatures, selecting a master zone from the heating zones, and selecting, as a slave zone, a heating zone which is other than the master zone among the heating zones; and after temperatures in the heating zones reach the respective tentative temperatures, raising the temperatures in the master zone and the slave zone to respective final target temperatures according to an attainment degree of temperature rise in the master zone.

A mechanical property inspection device is a mechanical property inspection device for inspecting the mechanical property of a molded article obtained by injection molding a resin material, and includes a spectral image acquisition section that acquires spectral images for a plurality of spectral wavelengths for the molded article; a spectral calculation section that calculates the spectral spectrum at a plurality of measurement points of the molded article from the spectral images for a plurality of the spectral wavelengths; a characteristic value calculation section that calculates a spectral characteristic value at a predetermined spectral wavelength in the spectral spectrum at a plurality of the measurement points; and a mechanical property estimation section that estimates the mechanical property of the molded article based on the spectral characteristic value.

An artificial intelligence-based injection molding system in which molding conditions can be changed to manufacture fair-quality products when defective products are manufactured because of disturbances during the injection molding including an injection molding machine which performs injection molding by injecting a molding material into a mold; an injection state data acquisition unit for acquiring, during injection molding, current injection state data that includes the viscosity profile of the molding material injected into the mold and/or the injection pressure value thereof; a determination unit, which inputs the current injection state data into a molding quality maintenance model trained with predetermined target injection state data, so as to determine whether to maintain molding quality; and a molding condition setting unit for changing a preset molding condition so that the current injection state data follows the target injection state data, when the determination unit determines not to maintain the molding quality.