摘要:
The present invention relates to a fiber production system (1) and production method which enables heat treatment applied during fiber production to be performed as applying laser on the fiber. The objective of the present invention is to provide a fiber production system (1) and production method which enables to perform momentary heat treatment on the filament (F) via laser beam (L) and which eliminates defected points in the filament structure by heating fast and drawing in fiber production.
摘要:
According to the invention, in order to control an extruder (1) including two intermeshing screws (20) for driving a material to be extruded, the following steps are performed while a material to be extruded is being processed by the extruder: constantly measuring the viscosity of the material in the flow of said material in the extruder, and adjusting the extruder in accordance with said viscosity measurement. According to the invention, in order to adjust the extruder in an effective and efficient manner, the rate at which the extruder is filled with material along the intermeshing screws is modified by adjusting, downstream from said screws, a flow cross-section for said material in accordance with the viscosity measurement.
摘要:
A process for producing a film is provided and includes extruding a multilayer film with a core component comprising from 15 to 1000 alternating layers of layer A material and layer B material. The layer A material has a crystallization temperature, T1c. The process includes passing the multilayer film across an air gap having a length from 10 mm to 800 mm. The process includes moving the multilayer film across a roller at a rate from 20 kg/hr to 1000 kg/hr. The process includes maintaining the roller at a temperature from T1c—30° C. to T1c, and forming a multilayer film with a layer A having a thickness from 50 nm to 500 nm and an effective moisture permeability from 0.77 to 2.33 g-mil/m2/24 hrs.
摘要:
The invention relates to a blown film extrusion device and a method for controlling the temperature. In order to improve the heating of the blow head (100) of a blown film extrusion device, the blown film extrusion device comprises an insulation (20) which has thermal resistance for the thermal insulation (40) of the blow head (100) in relation to the outer ambient air, the blown film extrusion device also having elements (22) for controlling the thermal resistance.
摘要:
A continuous process for making a flexible porous dissolvable solid structure with open celled foam. The continuous process has the steps of preparing a pre-mixture comprising surfactant, polymer, water, and optionally plasticizer; aerating the pre-mixture to form a wet aerated pre-mixture; extruding the wet aerated pre-mixture to form one or more sheets on a belt; and drying the sheets to form an Article having an open celled foam.
摘要:
An induction heating roll device includes first and second resin processing bodies which roll or knead the resin material by interposing the resin material between the first and the second resin processing bodies. At least one of the first and the second resin processing bodies is a roll 5a. An induction heating coil 25 which is provided inside of the roll 5a and a cooling medium supply device 27 which supplies a cooling medium to a cooling medium flow channel 37 which is formed inside of the roll 5a are further provided. The induction heating coil 25 performs induction heating of the roll 5a, and the cooling medium supply device 27 cools the heated roll 5a by supplying a cooling medium to the cooling medium flow channel 37.
摘要:
The invention relates to a method for mixing and molding composite materials from a reactive resin matrix, which assumes thermosetting properties during the curing, and from a filler material, the method comprising the following steps: (a) dosing a liquid or pasty reactive resin into an extruder; (b) adding filler material to the reactive resin in the extruder; (c) mixing the components with the aid of one or more extruder screws while forming a composite; (d) conveying the composite to an area of the extruder, in which the composite is accumulated; (e) degassing the accumulated composite, and (f) conveying the degassed composite out of the extruder through a suitably formed nozzle.
摘要:
Verfahren zur Herstellung einer Gummimischung mit folgenden Schritten: a) Hinzugabe von Mischungsbestandteilen für die Gummimischung in einen Innenmischer (6) mit rotierenden Mischwerkzeugen (7, 8), b) Durchführung einer Durchmischung der Mischungsbestandteile mit den rotierenden Mischwerkzeugen, wobei mit den Mischwerkzeugen ein Energieeintrag in das Mischgut erfolgt und alle Mischungsbestandteile durchmischt werden, c) Messung des Drehmomentes an mindestens einer Antriebswelle (3, 4) für die rotierenden Mischwerkzeuge, d) Vergleichen des gemessenen Ist-Drehmomentes mit einem vorgegebenen Ziel-Drehmoment, e) Anpassung der Drehzahlen für die rotierenden Mischwerkzeuge, wenn das gemessene Ist-Drehmoment für einen definierte Zeitspanne das vorgegebene Ziel-Drehmoment um einen vorgegebenen Prozentsatz unterschreitet oder überschreitet, f) weitere Regelung der Drehzahlen für die rotierenden Mischwerkzeuge in Abhängigkeit des gemessenen Drehmomentverlaufes, g) Beenden des Mischprozessen, wenn alle Mischungsbestandteile im Innenmischer in einer vorgegebenen Qualität durchmischt sind, h) Entnahme der Gummimischung aus dem Innenmischer und Weiterbearbeitung der Gummimischung mit weiteren Schritten.
摘要:
An object of the present invention is to provide a method for producing water absorbent resin powder in which permeability potential (SFC) is improved while a water absorbing rate (FSR) is being kept. The method is a method for producing water absorbent polyacrylic acid (salt) resin powder including the steps of: (i) polymerizing an acrylic acid (salt) monomer aqueous solution; (ii) during or after the step of (i), performing gel grinding of a hydrogel crosslinked polymer obtained by the polymerization, wherein the hydrogel crosslinked polymer has resin solid content of 10 wt% to 80 wt%, and the gel grinding is carried as to obtain a particulate hydrogel crosslinked polymer having a weight average particle diameter (D50) of 350 pm to 2000 pm and logarithmic standard deviation (σζ) of particle size distribution of 0.2 to 1.0; (iii) drying a particulate hydrogel crosslinked polymer obtained by the gel grinding, wherein the drying is performed at 150°C to 250°C; and (iv) carrying out a surface treatment to the particulate hydrogel crosslinked polymer thus dried.
摘要:
A squeezing-roll granulator which has a squeezing roller pair (60) made of a toothed pressure roller (2) and a toothed squeezing roller (3), wherein the toothing (4) of the pressure roller and of the squeezing roller has tooth flanks (5, 6) which are arranged between a tooth base region (7) and a tooth crown region (8 8'), and wherein the tooth base region has an outer diameter (d) which is smaller than the outer diameter (D) of the tooth crown region, and wherein at least one of the two rollers of the squeezing roller pair has three squeezing zones (9, 10, 11) in the tooth crown region comprising a central squeezing zone (10), these zones define different spacings between the tooth crown regions with a minimum spacing (a) in the region of the central squeezing zone, and wherein the contour of the tooth flanks and of the tooth base region of the rollers of the squeezing roller pair defines a maximum cross section of the granulate cushions (12) to be formed.