摘要:
This invention pertains to methods and devices for producing products in web form. In particularly advantageous embodiments, the instant invention relates to methods and devices for forming films by coating a coating mass formed from organic raw materials in an aqueous basis onto a reusable transfer support web to form a composite. The composite is then dried and the dried coating transferred onto a intermediate support material. The dried coating and intermediate support material are directed to a winding station. Upon separation from the dried coating, the dried reusable transfer support web may be directed to treatment and cleaning stations and is subsequently reused.
摘要:
An apparatus and method for measuring the gloss of a surface with a light source projecting light in the direction of the surface and a light-sensitive sensor receiving the light reflected from the surface and converting it into an electrical signal value. A memory storing a program for calculating the characteristic gloss value, a computer for calculating a characteristic gloss value from the electrical signal value, and a display for visually displaying the calculated characteristic gloss value are provided. Five or more reference value pairs are stored in the memory, each pair consisting of a reference characteristic gloss value and a corresponding reference electrical signal value measured by the apparatus on the basis of the reference surface. The measured electrical signal value is compared with the reference signal values and at least the next higher and the next lower value for interpolating the measured gloss.
摘要:
A continuous stream of burley or greenleaf tobacco is transported through a first and thereupon through a second heating unit wherein the particles of tobacco are heated by ascending currents of hot air supplied at a pressure and rate such that the respective portions of the stream are fluidized. First and second detectors are provided to measure the temperature of tobacco downstream of the first and second heating units. Signals from the detectors are used to regulate the temperature of the respective air currents. The temperature of air current which is admitted into the second heating unit is further regulated in dependency on deviation of signals furnished by the detector behind the first heating unit from a reference signal denoting the desired temperature of once heated tobacco. The temperature of each current of hot air is further regulated in dependency on the monitored temperature of air which is about to enter the first and second heating units.
摘要:
Moist tobacco is conveyed through a rotating drum which is heated by steam circulating coils and wherein a current of hot air is caused to flow counter to the direction of tobacco transport. The moisture content of conditioned tobacco is monitored by a detector which produces a first signal when the monitored moisture content deviates from a desired moisture content. The first signal is used to rapidly change the temperature of the air current from a standard temperature by adjusting the position of a valve which mixes hot air with cooler air whereby the extent of adjustment corresponds to the extent of deviation of monitored moisture content from desired moisture content. A second signal whose intensity is indicative of the extent of valve adjustment is transmitted to the input of a proportional-plus-integral amplifier which immediately changes the steam pressure in the coils and additionally changes the steam pressure while the temperature of the hot air current deviates from the standard temperature. The valve is reset to a position corresponding to the standard temperature of the air current whereupon the deviation of monitored moisture content from desired moisture content is counteracted exclusively by the changed temperature of the drum and coils as a result of adjustment of steam pressure in the coils.
摘要:
The present invention relates to compositions containing flame retardant polycarbonate, which are suitable for producing flame-resistant milk-white colored plates. The composition contains polycarbonate, 0.10 to 4.00 weight percent of an acrylate-based scattering additive, 0.50 to 5.00 weight percent of an aromatic-aliphatic polyester, and 0.50 to 8.00 weight percent of a phosphorus-based flame retardant.
摘要:
A sheet containing a base layer containing polycarbonate and a flame retardant, wherein the flame retardant contains a compound of formula 1 wherein R1, R2, R3 and R4, represents an optionally halogen-substituted C1-C8 alkyl, C5-C6 cycloalkyl, C6-C10 aryl or C7-C12 aralkyl, R5 and R6, represents a C1-C4 alkyl, and Y represents a C1-C7 alkylidene, C1-C7 alkylene, C5-C12 cycloalkylidene, —O—, —S—, —SO—, —SO2—, —CO— or a residue of formula (2) or (3) wherein Z represents carbon and R21 and R22 can be selected for each Z individually and, represent hydrogen or C1-C6 alkyl, with the proviso that, on at least one Z atom, R21 and R22 are simultaneously alkyl and wherein the polycarbonate comprises a mixture of linear and branched polycarbonate and wherein the linear polycarbonate content is at least 40 wt. %, based on the total polycarbonate weight.
摘要:
Methods for producing a mono- or multilayer composite are provided in which one or several layers are applied onto a carrier material by coating, the coated mono- or multilayer composite is dried and rolled up, and the installation is subsequently cleaned. The air circuit in the drying oven is entirely set to fresh air supply, and the drying oven is configured to be cleaned in a controlled manner. All components of the drying oven that come into contact with the product do not have to be removed during cleaning, but can be cleaned-in-place using technology integrated into the drying oven. The drying oven Outer housing is designed so that it can be lifted upwardly. All assembly parts in the drying oven interior are designed to eliminate disassembling for cleaning purposes. Transport rollers within the drying oven are designed as hollow shafts and provided with spraying nozzles.
摘要:
Endoscopic instrument with a control element, an instrument shaft, an adjustment element, a pull element, an actuator, an intermediate element which is operatively connected to the control element and to the adjustment element such that a force applied to the control element by the user can be transmitted to the adjustment element via the intermediate element in order to move the adjustment element, a detection device for detecting a torsion of the intermediate element, and an abutment device, which defines a free rotatory movement range of the control element relative to the adjustment element.
摘要:
The present invention relates to a polymer composition containing polycarbonate with a weight-average molecular weight Mw of from 24,000 to 33,000 and 5.0 wt. % to 20.0 wt. % (based on the total amount of the composition) of glass hollow spheres with an alkalinity of less than 1.0 meq/g. The present invention furthermore provides coextruded sheets in which the coextruded layer contains this polymer composition, and shaped articles produced therefrom, in particular containers and pieces of luggage, very particularly suitcases. Sheets which are obtainable with the polymer composition according to the invention have a high mechanical stability, a high scratch resistance, pleasant haptic properties and an excellent homogeneous external visual impression. The present invention furthermore relates to a process for the preparation of these polymer compositions and a process for production of the sheets according to the invention.