43 results about "Thin film flow" patented technology

A microfluidic flow cell subassembly, which may be assembled into a flow cell having fluidic connections outside of the main substrate, is described for encapsulating a sample to allow for subsequent controlled delivery of reagents to the sample, such as multiplexed in situ biomarker staining and analysis. The fluidic connectors are thin film fluidic connectors capable of connecting to a fluid delivery system. The subassembly may be sealed against a solid support to form a flow cell. Methods of use are also disclosed.

It is an object of the present invention to provide a method for producing microparticles, which can produce monodispersed microparticles, causes no clogging with a product due to self-dischargeability, requires no great pressure, and is excellent in productivity, wherein a fluid in which at least one kind of microparticle materials is dissolved is introduced between two processing surfaces arranged to be opposite to each other to be able to approach to and separate from each other, at least one of which rotates relative to the other, to be formed into a thin film fluid, and the thin film fluid is cooled or heated (warmed) to allow saturation solubility to change, thereby separating microparticles.

A reactor comprising a vessel; a fluid dispensing system having a plurality of ports arranged lengthwise along the inner surface of the vessel to distribute the fluid thereon in a controlled manner to maintain substantially uniform thin film flow along the length of the inner surface; and an outlet for removing vapor. A system comprising a fluid source; a first vessel; a heat exchanger for preheating the fluid; a first pathway for directing a preheating fluid from the first vessel to the heat exchanger; and a second pathway for directing preheated fluid toward the first vessel for processing. A method comprising introducing a fluid; distributing the fluid in a controlled manner to form a substantially uniform thin film flow an inner surface of a vessel; evaporating fluid; and removing vapor. A method comprising introducing a fluid; processing the fluid; directing processed fluid into another vessel; and further processing the fluid.

The invention belongs to the field of thin film growth or thin film preparation, and particularly relates to the fields or similar devices of thin film preparation performed by using methods of deposition or jet plating and the like on a substrate. The invention provides a continuous growth method of thin films at a high temperature and under vacuum conditions, which solves the problem of prolonging the growth cycle caused by long air sucking and release time and slow heating / cooling speed and the like when thin films grow in a single cavity. When a batch of thin films flows out of the final end of a three-cavity assembly line, a batch of substrates flows in the initial end of the assembly line to carry out thin film growth, thereby avoiding the time consumption and energy consumption for repeated air sucking and release and heating / cooling. In addition, the size of a stainless steel cavity used in the invention is easily expanded, so that the stainless steel cavity can accommodate large-sized and multi-layered substrates, thereby greatly improving the output of thin films growing in a single batch.

A low-gram-weight and high-performance PE embossing film is characterized in that the embossing film comprises three layers of films formed through co-extrusion; the surface of the embossing film is subjected to corona treatment; the components and the weight percentage of the three film layers are as follows: a first layer comprises the components in percentage by weight as follows: 85%-95% of m LLDPE (linear low density polyethylene) and 5%-15% of color masterbatch; a second layer comprises the components in percentage by weight as follows: 85%-95% of HDPE (high-density polyethylene) and 5%-15% of color masterbatch; and a third layer comprises the components in percentage by weight as follows: 83%-93% of LDPE (low-density polyethylene), 5%-15% of color masterbatch and 1%-2% of a slipping agent. According to the low-gram-weight and high-performance PE embossing film, the material of the slipping agent in a certain proportion is added to the formula and subjected to co-mixing with the LDPE, the friction coefficient of the film surface is reduced, the adhesion problem among films is eliminated, and the texture is more smooth; good co-mixing and plasticizing effects of the materials are guaranteed by the aid of a three-layer co-extrusion casting technology, and the problems that the co-mixing effect of a conventional single-layer co-extrusion technology is poor, and the plasticizing is not good are solved; and the die head gap is controlled through the system and the flow of a molten plastic fluid is controlled through a metering pump, so that the film casting stable linear extrusion is realized.

An electromagnetic wave applying apparatus according to the present invention has an electromagnetic wave source (13) such as an ultraviolet lamp or the like, a cylinder (15) surrounding the electromagnetic wave source, a liquid retention tank (16) disposed around the cylinder, and an inlet portion (17) for introducing a liquid overflow from the liquid retention tank as a thin film flowing down an inner wall surface of the cylinder, which is irradiated with an electromagnetic wave from the ultraviolet lamp (11). The electromagnetic wave applying apparatus also has swirling flow forming means for causing the liquid introduced from the inlet portion (17) onto the inner wall surface of the cylinder to flow as a swirling flow down the inner wall surface. The electromagnetic wave applying apparatus allows a large amount of liquid to be stably treated by the application of an electromagnetic wave without causing the electromagnetic wave source such as an ultraviolet lamp or the like to be contaminated.

The invention discloses a vacuum defoaming device and a defoaming method for high-viscosity liquid. The vacuum defoaming device is provided with two opposite defoaming baffles and a large-area spiralplate; so high-viscosity liquid is always in the state of a thin-film flow layer, which allows the surface area and the surface tension of the high-viscosity liquid to be greatly increased and bubblesto be effectively eliminated; and the low-speed rotation of the spiral plate accelerates the film formation speed and the flowing speed of the high-viscosity liquid, and the rotational shear force generated by the spiral plate can also eliminate bubbles. The defoaming method of the invention adopts multiple defoaming manners, and performs efficient and stable defoaming through a combination of acertain degree of vacuum, the rotating speed of the spiral plate and the flow control of feed and discharge flow valves. According to a technical scheme described in the invention, the vacuum defoaming device has the advantages of simple structure, simple operation, low energy consumption, low cost, high defoaming efficiency and the like, is suitable for defoaming of high-viscosity liquid, and canprotect high-viscosity liquid from the adverse impact of high temperature, defoaming agent and the like.

A reactor comprising a plurality of vessels, each having a heat exchange surface for processing a fluid as a thin film flow, the vessels arranged in a concentric manner; a plurality of annular spaces situated between the vessels; and a pathway for directing a heat exchange fluid from one vessel to an adjacent vessel for creating a temperature differential between the heat exchange surfaces and the fluid being processed. A system comprising a fluid source, a reactor, and a vapor outlet and a processed fluid outlet through generated vapor and processed fluid are directed out of the reactor, respectively. A method comprising providing a plurality of concentrically arranged surfaces in spaced relation, distributing a fluid to be processed against the surfaces in a controlled manner to form a substantially uniform thin film flow thereon, and evaporating at least a portion of the fluid being processed along the plurality of surfaces.

The invention discloses a molecular distillation deacidification method and equipment for edible oil. A molecular distillation system adopts single molecular distillation equipment or is formed by connecting multiple stages of molecular distillation equipment in series or parallel or in a series and parallel combination way; the positions of the multiple stages of molecular distillation equipment are disposed horizontally or vertically or in a horizontal and vertical combination manner; the edible oil to be distilled enters the molecular distillation system, so as to enter the single molecular distillation equipment or enter the molecular distillation stage I, the molecular distillation stage II and the molecular distillation stage n; the edible oil to be distilled enters the molecular distillation equipment from the top end, and is subjected to primary uniform distribution through a distribution pipe pore or / and slotted plate so as to be uniformly distributed to the upper part of the heating surface of the equipment to form a uniform thin film flowing from top to bottom; the edible oil to be distilled is at least uniformly distributed again through a distribution slotted plate or a screen hole so as to be uniformly distributed to the heating surface of the equipment to the bottom; when the molecular distillation system adopts multiple stages, the molecular distillation stage I is used for removing water retained in the edible oil, and the molecular distillation stages II and n are used for removing all types of free fatty acids.

The invention discloses a hydrostatic guideway block integrating a flow feedback device and a pressure sensor. The hydrostatic guideway block comprises a two-cavity sliding block, the pressure sensorand the thin film flow feedback device, wherein the two-cavity sliding block comprises a sliding block body; a screw-joint fixed hole is formed in the sliding block body; a lifting cavity is arrangedon the left side of the sliding block body; and a pressure maintaining cavity is arranged on the right side of the sliding block body. According to the device, the pressure change trend can be detected by utilizing the pressure sensor, and the installation positions of the two-cavity sliding block and a support plate are re-adjusted, so that the installation accuracy is ensured; and the device isfurther integrated with the thin film flow feedback device, and the flows in an upper oil cavity and a lower oil cavity are automatically adjusted, so that a completely installed hydrostatic guidewayis ensured to have the same oil film rigidity and characteristics on various parts; and in addition, the position of a throttle formed by an elastic thin film sheet is close to the positions of the lifting cavity and the pressure maintaining cavity, so that an oil circuit can be effectively shortened, and the dynamic rigidity is ensured.

A pipe for supplying a dope to a co-casting die consists of a goose neck portion connected to a feed block of the co-casting die, and a straight pipe portion connected to the goose neck portion. The goose neck portion has a radius of curvature of 50 mm to 400 mm, and the straight pipe portion forms an angle of 0 to 20 degrees to the horizontal plane. Venting valves are opened up at the beginning of dope feeding, and are closed to some extent as the dope comes out. After the air is completely vented out, the venting valves are completely closed. Thereby, an air collection is completely let out from the pipe, a plastic web discharged from die lips of the co-casting die would not contain any air bubbles, it is prevented that the web splashes to put on the die lips, causing steaks on the produced film.

The invention relates to the field of packaging bags, in particular to a film for an antibacterial packaging bag and a preparation method of the film. The film for the antibacterial packaging bag is prepared by mixing the following components in parts by mass: 10-15 parts of low-density polyethylene; 35 to 45 parts of high density polyethylene; 5 to 10 parts of maleic anhydride grafted polyethylene; 10 to 18 parts of thermoplastic polyurethane elastic rubber; 3-6 parts of a filler; and 8-12 parts of a nano zinc oxide-chitosan composite antibacterial agent. The preparation method of the film for the antibacterial packaging bag comprises the steps of preparation of the nano zinc oxide-chitosan composite antibacterial agent, film extrusion, film casting, film cutting and the like. The film islow in production cost, good in antibacterial effect, non-toxic, convenient and fast to use and capable of being used for manufacturing food packaging bags.

The invention discloses an automatic production line of solar cell panel packaging films. The automatic production line comprises a screw extruder, a film casting machine, a thickness gauge, a traction machine and a film winding machine, the screw extruder is connected with the film casting machine through a melt connector, the thickness gauge is arranged on the rear side of the film casting machine, and a rubber film bracket is arranged between the thickness gauge and the traction machine. The film winding machine is arranged on the rear side of the traction machine. Division is achieved in the screw extruder through a spiral rib plate to form a spiral water cavity and a spiral water channel, and flow guide spiral sheets are arranged on a water conveying pipe. Semiconductor refrigeration cylinders are arranged on the inner cylinder walls of roller outer cylinders of a rubber roller and a pattern roller which conduct opposite rolling, and a flexible roller sleeve and an end face cam structure are arranged on the outer cylinder of the rubber roller in a sleeving mode. Automatic winding is driven through a driving device on a winding machine frame to form a wound product, and a fly-cutter cut-off mechanism, a pressing swing arm mechanism and a spare shaft pressing mechanism are further movably supported on the winding machine frame. The production line not only can achieve continuous production and is high in efficiency, but also is good in rubber film uniformity and high in product quality.

A generally time-varying boundary surface between multiple flowing fluids with different refractive indices, for example the boundary surface between water and air with a free water surface, represents an optical disturbance. Optical flow measuring processes that take place through the boundary surface are influenced by this disturbance, which leads to significant measurement deviations or even completely prevents measurement. The invention contributes to solving this technical measurement problem by proposing arrangements (1, 1a, 1') and processes for the instantaneous, hardware-based correction of the optical disturbances caused by a fluctuating boundary surface (211). For this purpose, a wavefront modulator (5) is introduced into the beam of the optical measuring process and, by means of a feedback control, actively compensates for the optical disturbance that is caused. The invention makes it possible to perform optical flow measurements through a fluctuating boundary surface. It is at the same time not restricted to a single flow measuring process but can be implemented in all known imaging processes. The invention can be used in a large number of technical applications. To bementioned by way of example are: liquid-air boundary surfaces, for example in water channels with an open surface; film flows, for example in chemical process engineering for cooling, cleaning or distillation; liquid jets with the surface fluctuating on all sides; measurements in levitated drops or drops adhering on an opaque underlying surface or gas bubbles occurring in liquids. The invention is also suitable for the correction of disturbances due to temperature gradients in combustion processes, pressure gradients, for example in the case of pressure surges, or concentration gradients, forexample in the case of electrolytic processes.

The invention is applicable to the field of film extruders, and provides a method for aligning a die head bolt. The method comprises the steps that 1, a thin film raw material is put into a film extruder for melting, and a molten film is extruded below the die head bolt; 2, the molten film is segmented below at least one die head bolt through a sharp instrument so that the film is split into two sides, the molten film is integrated again under the action of surface tension, and a scratch is formed at the combined position; and 3, the scratch flows to a measuring position along with the moltenfilm, and the position of the scratch is marked as the position corresponding to the die head bolt on a thickness gauge. According to the method, the film is torn by the sharp instrument, and the molten film below the die head bolt is identified, so that the film can correspond to the die head bolt through identification when the film moves to the measuring position, and the die head bolt is aligned.

The invention discloses a flow design method of a casting roller. The method comprises the following steps of firstly, respectively establishing geometric models of a casting film, the casting rollerand a cooling medium; secondly, discretizing a calculation region of the geometric models, importing the discretized calculation region into numerical simulation software, setting boundary conditions / physical property parameters, and performing numerical iterative calculation to obtain three-dimensional temperature field distribution characteristics of the casting roller, the casting film, the cooling medium; then, extracting axial temperature rise information of the casting film, and drawing an axial temperature rise curve of the film; and finally obtaining a relation curve of 'axial temperature rise slope - cooling medium flow velocity ' of the film, and conducting calculation according to a flow calculation formula to obtain flow Q meeting design requirements. According to the flow design method of the casting roller, the flow design of the casting roller can be quickly realized, and flow parameters meeting the design requirements are obtained. Specifically, the corresponding relation between the axial temperature rise slope and the flow velocity of the casting roller is obtained in a modeling simulation mode, the relation is substituted into a flow calculation formula, the flowrequired by the casting roller is obtained, and the method is rapid and accurate.

A substrate processing apparatus includes a substrate rotating mechanism for rotating a substrate, a nozzle part for discharging droplets of a processing liquid toward a main surface of the substrate, and a nozzle moving mechanism for moving the nozzle part in a direction along the main surface. The nozzle part includes two guide surfaces (511), two gas ejection ports (512), and two processing liquid supply ports (513). The gas ejection port ejects gas along the guide surface, to thereby form a gas flow flowing along the guide surface. The processing liquid supply port is provided in the guide surface, for supplying the processing liquid to between the gas flow and the guide surface. In the nozzle part, assuming that one of the two gas ejection ports is regarded as a first gas ejection port for forming a gas flow which carries the processing liquid as a thin film flow to a lower end edge (516) of the guide surface, the other is a second gas ejection port for forming a gas flow which collides with the processing liquid spattering from the lower end edge. With this configuration, it is possible to discharge a lot of droplets having a uniform particle diameter and thereby appropriately process a substrate.

The invention discloses a zigzag folding mechanism suitable for plastic bag processing. The zigzag folding mechanism comprises a bottom frame; a rotating frame which can rotate relative to the bottomframe is arranged on the bottom frame; a zigzag folding cylinder which allows plastic thin films to penetrate through so as to conduct zigzag folding on the plastic thin films is arranged on the rotating frame; a first roller set which can allow plastic thin film raw materials to pass through is arranged on the position, above the zigzag folding cylinder, on the bottom frame; the first roller setcomprises a first left roller and a first right roller which are mutually attached and tightly press the plastic thin films passing through the position between the first left roller and the first right roller so as to enable plastic thin film layers to be sealed at the first left roller and the first right roller; a second roller set which can forwards convey the plastic thin films flowing out ofthe zigzag folding cylinder is arranged on the rotating frame; and the second roller set comprises a second left roller and a second right roller which are mutually attached, tightly press the plastic thin films passing through the position between the second left roller and the second right roller so as to enable the plastic thin film layers to be sealed at the second left roller and the secondright roller, and drive the plastic thin films to forwards move during rotating. The zigzag folding positions of the plastic thin films can be adjusted by rotating the rotating frame, and operation iseasy.

The invention discloses a functional multi-layer co-extrusion fluororesin composite film and a preparation method, and belongs to the field of airship skin, the functional multi-layer co-extrusion fluororesin composite film has a multi-layer structure, and comprises a first fluororesin layer, a first bonding layer, a high barrier layer, a second bonding layer and a second fluororesin layer. The protective layer and the barrier layer are integrally realized, so that the functionality of the fluororesin composite film is enhanced, the surface density of a skin material is reduced, further optimization is realized while the functions of the protective layer and the barrier layer of the airship skin are ensured, and the fluororesin composite film has the advantages of low surface density, high strength, high barrier, environment (high and low temperature, ultraviolet and the like) resistance and the like; compared with traditional airship skin preparation, compounding procedures are reduced, the process control difficulty is lowered, compared with traditional compounding of a protective layer and a blocking layer, the fluororesin composite film is more stable in structure, higher in interlayer bonding capacity and higher in reliability. The multi-layer co-extrusion fluororesin composite film fills the blank of a multi-layer co-extrusion fluororesin film casting process (two-way stretching process) in China.

The invention discloses thin film casting equipment for preparing a new polymer packaging material thin film in the technical field of film thin processing. The thin film casting equipment comprises a bottom plate, the front side and the rear side of the left end of the top of the bottom plate are fixedly connected with two symmetrically-arranged first mounting plates, the inner walls of the two first mounting plates are jointly and fixedly connected with a casting box, second mounting plates are symmetrically and fixedly connected to the front side and the rear side of the top of the bottom plate, first arc-shaped sliding grooves and second arc-shaped sliding grooves are formed in the left sides and the right sides of the inner walls of the two second mounting plates correspondingly, and the two first arc-shaped sliding grooves are slidably connected with first rotating shafts correspondingly. According to the thin film casting equipment, when a casting machine breaks down, protection can be carried out on the thin film, damage to the thin film can be greatly reduced, and the production quality of the thin film can be improved.

The invention provides a CPP cast film, a CPP cast composite film, a preparation method of the CPP cast composite film and a tinned sheet formed by heating and pressing the CPP cast composite film, and belongs to the technical field of packaging. The CPP casting film is prepared from a composite layer, a middle layer and a heat sealing layer through a three-layer co-extrusion casting process, andthe composite film containing the CPP cast film is formed by printing ink on the printing film in an intaglio printing manner, uniformly gluing, and heating and laminating through a laminating rollerto compound the CPP cast film and the printing film together, thereby obtaining the composite film containing the CPP cast film. The composite film can be subjected to heat-seal press fit with a tinned sheet at 130-180 DEG C, and the bonding strength is larger than 5 N / 15 mm. The composite film is exquisite in printing, convenient to coat, suitable for can making and reprocessing and capable of bringing a new display effect to iron can packaging through separation and recycling of packaging waste; the compounded products are easy to make cans and form, and packaging waste can bodies are more convenient to recycle and process.