52 results about "Injected material" patented technology

The invention belongs to the technical field of reaction kettles, and discloses a high-efficiency polymerization reaction kettle for producing a polycarboxylic acid water reducer, the high-efficiency polymerization reaction kettle comprises a reaction kettle body, a stirring plate I and a stirring plate II, a composite rotating part is rotatably mounted in the reaction kettle body, the stirring plate I and the stirring plate II are fixedly connected to the outer surface of the composite rotating part, and the stirring plate I and the stirring plate II are fixedly connected to the outer surface of the composite rotating part. A midway injection mechanism is arranged in the composite rotating part, the composite rotating part rotates around the midway injection mechanism in the composite rotating part, and the midway injection mechanism is used for injecting the material liquid into the mixed liquid in the stirring reaction period. According to the invention, the key additive is directly sprayed to the specified depth in the reaction liquid instead of being only added on the liquid surface, so that the problem of over-high local concentration is avoided, the material can be instantly and uniformly dispersed in the reaction system, the stability and controllability of the reaction are greatly improved, the high consistency of the product performance is ensured, and the product quality is improved. Accurate, multi-point and deep injection of materials in the reaction process is achieved.

This invention provides an injectable polyurethane material, its preparation method, and its applications, belonging to the field of injectable materials. The injectable polyurethane material has a cross-linked polyurethane structure and hydrophilicity. It is formed by polymerizing a polyethylene glycol-diisocyanate prepolymer, a cross-linking agent, and a chain extender. The cross-linking agent has a structure of Formula 1, and the chain extender has a structure of Formula 2. Specifically, this invention can employ a cross-linking agent containing a Schiff base and a chain extender with catechol as a side group, introducing both into a polyurethane network to form the injectable polyurethane material. In this invention, this cross-linked hydrophilic polyurethane can utilize the pH-responsiveness of the Schiff base to achieve controlled injection through secondary processing; moreover, it has good mechanical properties, facilitating its application.

An injection molding device that performs injection molding of a molded article using a molding die is provided. The injection molding device includes an injection unit that injects material into the molding die and a molding die opening and closing unit to which the molding die is attached and that opens and closes the molding die. The injection unit includes an injection section including an injection control section that controls injection of the material and a nozzle section that injects the material, a movement section that moves the injection unit with respect to the molding die opening and closing unit, and a holding plate that is connected to the injection section and that holds the injection section. The movement section includes a support section that supports the holding plate, and the holding plate is configured to slide with respect to the support section.

The application belongs to the technical field of injection molding machines, and particularly relates to a multi-gating injection mechanism capable of accurately controlling the material quantity of the same mold cavity, which comprises an injection seat, a material injection cavity provided in the injection seat for liquid material to enter, a plurality of material distribution cavities provided in the injection seat and respectively communicated with the material injection cavity, a plurality of injection guns provided on the injection seat and respectively connected with the plurality of material distribution cavities, and an injection assembly communicated with the material injection cavity and used for supplying material to the material injection cavity. By limiting the structure of the injection mechanism, the liquid material entering the material injection cavity is distributed through the cooperation of the plurality of material distribution cavities and the plurality of injection guns, and is respectively injected into the relative positions in the mold cavity through the plurality of injection guns, so that the injection speed of the liquid material in the mold can be effectively improved, and the plurality of injection guns simultaneously inject material into the plurality of positions of the mold cavity, thereby effectively reducing the time of diffusion and flow of the liquid material and improving the production efficiency.

1. The name of the design product: die casting machine nozzle (SZ-002). 2. The use of the design product: used for injecting material into the die cavity of the die casting machine. 3. The design points of the design product: in the shape of the product. 4. The picture or photo that best shows the design points: Design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The utility model provides an improved extruded polystyrene board extrusion mold which comprises a lower mold body, and a containing cavity is formed in the lower mold body. Limiting columns are welded to the periphery of the upper end of the lower mold. An upper mold is arranged on the limiting column; penetration holes are formed in the periphery of the interior of the upper mold and connected with the limiting columns in a penetrating mode. A vibration dispersion seat structure is supported at the bottom of the lower mold; a limiting column structure is arranged on the inner side of the vibration dispersion seat structure, and the vibration dispersion seat structure is characterized by comprising a bottom plate, and side columns are welded to the periphery of the upper end of the bottom plate; the middle of the upper end of the bottom plate is in bolted connection with a rubber frame; supporting springs are welded to the upper ends of the side columns. A movable working plate structure is supported by the upper ends of the supporting springs. Through the arrangement of the vibration dispersion seat structure, when the lower die vibrates, the injected materials are dispersed, so that the situation that the working efficiency is influenced due to the fact that the concentrated materials need to be extruded and dispersed is avoided.

The present invention relates to a method for the rehabilitation and / or stabilization of a track bed (1), wherein railway rails (3a, 3b) are attached to sleepers (2) and the sleepers (2) are arranged in or on the track bed (1) and stones, ballast (8) or the like are located in the track bed (1), wherein the rehabilitation and / or repair is carried out in the track bed (1) itself without detaching the sleepers (2), the rails (3a, 3b), and / or without removing the sleepers (2) from the track bed (1), wherein the sleepers (2) have a central section and two end sections, and the central section is located between the two end sections, wherein a continuous opening (4) is produced through the sleeper (2) in the region of the first end section and / or the second end section and / or the central section, preferably the opening (4) is produced by a bore, wherein a material, preferably an injection resin, is injected into the opening (4) or openings.which solidifies or hardens after application, wherein the injection resin, when injected through the opening (4) in the sleeper (2), enters the area below the sleeper (2) in the track bed (1) and there wets the track bed material, namely stones, ballast (8) or the like, and fills gaps and / or cavities in the track bed (1), and after the injection resin has solidified, the area of ​​the track bed (1) that is wetted by the injection material, or whose gaps and / or cavities are filled, forms a compact body (15) on which the sleeper (2) rests.

A system for producing at least one three-dimensional element on a visible face of an external part element of a timepiece implementing this process, the system including a mould formed by the reversible assembly of a first part and a second part configured to receive a support plate of the external part element, the mould including at least one cavity formed by associating the first part including at least one impression with the visible face of the external part element, each cavity helping produce a blank of the three-dimensional element from an over-moulding by injecting injectable material onto the visible face, and a device for applying a coating onto the blank over-moulded on the visible face of the external part element helping finalise this blank of the three-dimensional element.

The invention relates to the technical field of metal cleaning fluid preparation, and discloses a metal protection cleaning fluid preparation process which comprises the following steps: S1, material selection, S2, mixing and stirring, S3, secondary feeding and S4, rear-end treatment. Through the design of the mixing device, mixed liquid is stirred and mixed in the mixing tank, and during specific mixing, materials to be mixed are injected through the hollow rod and are discharged through the first liquid discharging groove and the second liquid discharging groove respectively, so that the materials are directly dispersed and sprayed in the mixing tank, and the injected materials are more dispersed; furthermore, mixing and stirring can be rapidly carried out while the stirring blades rotate, the mixing efficiency is higher, on the basis, if the interior of the mixing tank needs to be cleaned, cleaning water can be injected through the hollow rod and directly sprayed to the inner wall of the mixing tank, and all areas in the mixing tank can be effectively covered in cooperation with lifting of the hollow rod; and the cleaning efficiency is higher, and the effect is better.

l 3 Disclosed in the present invention are a liquid inorganic material for crack reinforcement and a preparation method therefor. The liquid inorganic material includes component A liquid and component B liquid, where a mass ratio of the component A liquid to the component B liquid is (2—4): 1; the component A liquid includes in parts by mass: 75—90 parts of an adhesive, 30-50 parts of diatomite, and 1-5 parts of a stabilizer, and after mixing, a pH value of the component A liquid is 7—9; and the component B liquid includes in parts by mass: 10—20 parts of waste phosphoric acid, 50-150 parts of water, and 30-100 parts of inorganic salts, and after mixing, a pH value of the component B liquid is 1—1.5. Additionally, according to the size of cracks and the total quantity of injected materials, appropriate quantities of the ultrafine steel fibers are added to improve the strength after solidification.

The invention belongs to the technical field of semiconductor manufacturing, and discloses a longitudinal uniform doping ion implantation method, which comprises the following steps of: S1, setting the energy of an ion implanter as the maximum energy Emax corresponding to the required doping depth; s2, applying an alternating electric field between an ion outlet of the ion implanter and the material to be implanted; s3, setting an electric field direction according to the polarity of the injected ions; and S4, controlling the period ta of the alternating electric field and the residence time T of the ion beam on the surface of the to-be-injected material to meet the relation: T = k * ta, and k is an integer and is greater than or equal to 1. The alternating electric field is introduced between the ion beam and the to-be-injected material, so that the injected ions can be uniformly distributed to the target depth position from the surface of the material, the applicability is good, and the practicability is high.

A dispensing package for dispensing a liquid or a semi-liquid product, the dispensing package includes: a storage member having a cavity adapted to contain the liquid or the semi-liquid product therein; an actuating member connected with an upper open end of the storage member; an applicator head connected with a top portion of the actuating member; the applicator head includes a dispensing portion and the actuating member includes an actuating portion; the actuating member and the actuating portion are made up of two bi-injected materials; the actuating member is a longitudinal hollow body having two diametrically opposite bores on a left-side portion and a right-side portion thereof; the actuating portion is another longitudinal hollow body having two diametrically opposite press buttons formed on an outer surface thereof; wherein the actuating portion is inserted in the actuating member such that the two diametrically opposite press buttons protrude out from the respective two diametrically opposite bores and a portion of the longitudinal hollow body of the actuating portion is situated inside the longitudinal hollow body of the actuating member; wherein the actuating portion is made of a soft compressible material as compared to the actuating member which is made of a hard rigid material; wherein the two diametrically opposite press buttons have dimensions closely matching those of the respective two opposite bores on each side of the actuating member; wherein the applicator head and the actuating member define an interior chamber in fluid communication with the cavity of the storage member for receiving the product stored in the cavity of the storage member when a user inverts the dispensing package; wherein the press buttons are manually movable between a deformed position and a rest position, wherein in the rest position, the press buttons are in a non-deformed state; and wherein in the deformed position, the press buttons are deformed by applying pressure for compressing the product within the interior chamber which in turn dispenses the product through a dispensing tip formed at an upper end of the dispensing portion

A method of injection molding using a mold (10, 10') defining a cavity (26, 26'). The mold (10, 10') includes a first part (20, 20') and a second part (22, 22'), the first part (20, 20') being movable relative to the second part (22, 22') between a first relative position in which the mold (10, 10') is in an uncompressed configuration and the cavity (26, 26') has a first shape, and a compressed configuration in which the cavity (26, 26') has a second shape. The method includes, during an injection phase, injecting material into the cavity (26, 26') to form a workpiece (12, 12') having the first shape within the mold, and, during a compression phase after the injection phase, applying a force to the first part (20, 20') to move the first part (20, 20') such that the mold (10, 10') moves from the uncompressed configuration to the compressed configuration, thereby causing the workpiece (12, 12') to be compressed to have the second shape.

Provided are a method for estimating a flow rate distribution of an injected material, a method for estimating a temperature distribution of an object, a method for designing a spray nozzle, and a method for creating a learned model, which are capable of accurately estimating a flow rate distribution of an injected material injected from a spray nozzle on an injection surface while using a particle method having a track record as a numerical simulation method even for a gas-liquid multiphase fluid.SOLUTION: An inflow particle arrangement interval d ' obtained from a filling rate α of the liquid phase and an initial inter-particle distance d is defined as a particle interval in the particle inflow region, a function of a probability that particles are generated in the particle inflow region is defined as a particle generation rate function P, and coordinates of the injected material in the particle inflow region are represented by the inflow particle arrangement interval d ' and the particle generation rate function P, the particle generation rate function P is calculated in advance by using a flow rate distribution on a test ejection surface measured in advance by using a test spray nozzle having the same shape as the spray nozzle.SELECTED DRAWING: Figure 1

1. The name of the design product: die casting machine nozzle (SZ-003). 2. The use of the design product: used for injecting material into the die cavity of the die casting machine. 3. The design points of the design product: in the shape of the product. 4. The picture or photo that best shows the design points: Design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The invention discloses a lifting type multi-station double-injection-table shoe sole forming machine which comprises a bottom frame, a translation carrying table, an X-axis translation driving mechanism, a first injection mechanism, a second injection mechanism, a lifting driving mechanism and a plurality of shoe sole forming molds. The injection mechanism is reasonable in structural design, a discharging port of the first injection mechanism can be in butt joint with an upper die feeding port of an upper die of each shoe sole forming die, and a discharging port of the second injection mechanism can be in butt joint with a lower die feeding port of a lower die of each shoe sole forming die; in this way, the first injection mechanism and the second injection mechanism can conduct injection and glue feeding operation on the upper mold and the lower mold of one shoe sole forming mold at the same time, the lifting driving mechanism can drive the second injection mechanism to move up and down, and the height position of the second injection mechanism can be adjusted conveniently; in this way, the two injection mechanisms can be compatible with shoe sole forming molds of different heights, and universality is high.

The invention relates to an intelligent integrated injection molding device for a steel skeleton pipeline joint, and relates to the field of pipeline injection molding devices.The intelligent integrated injection molding device comprises a mold assembly, a mold power assembly, a material injection assembly and a feeding assembly, a mold cavity is formed in a mold, and the mold assembly is connected with the mold power assembly so that the mold assembly can be driven to conduct mold closing and mold dismounting operation; the feeding assembly can convey a steel framework to the position of the mold cavity, and the material injection assembly can inject materials into the mold cavity. A supporting assembly and a driving assembly are arranged on the mold assembly, the supporting assembly can extend into the mold cavity to support the steel framework, injection molding spaces are formed in the two sides of the steel framework, and the driving assembly can drive the supporting assembly to retract into the mold assembly, so that the supporting assembly and the mold assembly form the cavity wall of the mold cavity. The steel skeleton pipeline has the effects that dynamic supporting of the steel skeleton is achieved, it is guaranteed that the integrity of the plastic layer on the steel skeleton is better, and the sealing performance of the steel skeleton pipeline is improved.

This application relates to the field of bracket molding technology, and provides a bracket injection mold and injection method. It uses at least a first punch, a second punch, and a first die to form an injection molded part. The second punch is proportionally smaller than the first punch. During injection molding, the first punch and the first die are closed for the first time to inject material. The parts are separated immediately after cooling to a first mold opening temperature and before the injection molded part is completely solidified. The injection molded part is attached to the first die. Subsequently, the second punch and the first die are closed for the second time to cool until completely solidified. This application results in low mold opening resistance when the injection molded part is not completely solidified, preventing damage to the first punch. The use of the smaller second punch for secondary mold closing and cooling reduces the force exerted by the solidification shrinkage of the injection molded part on the second punch, avoiding damage and cracking, and improving mold life and product yield.

The main body of the equipment for hybrid molding multi-component materials in a single mold opening and closing operation includes a main frame and an injection module, the injection module including a mounting plate, the mounting plate being detachably connected to the lower beam of the die set, the mounting plate being equipped with metal injection channel ports, non-metal injection channel ports, and bulging media ports, and the injection material can be efficiently replaced by replacing the mounting plate. Based on a universal integrated die set, the present invention integrates multiple different metal injection equipment and non-metal injection equipment into a single equipment main body by arranging different injection modules, thereby reducing equipment costs, improving molding efficiency, and enabling non-metal injection (e.g., plastics, fiber-reinforced resins, etc.), metal injection (e.g., aluminum / magnesium / aluminum-magnesium alloys), and injection of various bulging media in a single mold opening and closing operation.

The utility model discloses a kind of continuous granular material feeders suitable for experimental device, it includes feeder, for continuously conveying material to feeder's feeding tank, for supplementing material to the transfer tank in feeding tank;The upper portion of the transfer tank is communicated with vent valve, the upper portion of feeding tank is communicated with back pressure valve, rotatable material frame is equipped in feeder, material frame bottom is equipped with feeding tray, feeding tray does not completely cover the bottom of material frame, and the discharge pipe opening communicated with feeding tank is located above material frame.The utility model is especially suitable for granular material.The transfer tank supplements material to feeding tank in time and quantity;Feeding tank continuously injects material into annular material frame in feeder, material frame falls into feeder and flows into reaction system after turning out feeding tray.The speed of material frame rotation can be adjusted by variable speed motor, to meet the requirement of different feeding flow.

This invention provides a multi-adjustment system for a mold cooling structure that prevents deformation of the injected material while it is being cooled by freely supplying water of various temperatures through channels formed in the injection mold and freely adjusting the temperature of each part of the injection mold. [Solution] The multi-adjustment system for the mold cooling structure operates by driving the water supply pump when the temperature of the water stored in the cold and hot water tanks is adjusted to a predetermined temperature. The water stored in the cold and hot water tanks is supplied to the converter / distributor, and when the on / off valves provided in the converter / distributor are adjusted, the water supplied to each supply branch pipe is supplied to the first supply pipe 21, then passes through the flow path of the cooling core 10, heating or cooling the cooling core and the upper and lower mold parts 1 and 2 to different temperatures, and then is returned to the cold and hot water tanks of the temperature control unit via the first return pipe 22 and the return branch pipe. The temperature of the cooling core and the upper and lower mold parts can be freely adjusted.

The invention discloses an injection mold based on plastic product machining, and relates to the technical field of plastic product machining, the injection mold based on plastic product machining comprises steps, a bottom frame is fixed to the three sets of steps, and vertical frames are longitudinally arranged on the bottom frame in a triangular equidistant shape; the vertical frames are vertically provided with charging barrels for injection molding of materials through three hoppers, upper molds are fixed to the outer sides of the vertical frames, lower molds matched with the upper molds in a mold closing mode and box bodies fixed to the two sides of the lower molds are arranged below the upper molds, and switching assemblies used for mold opening and closing operation of the upper molds and the lower molds are arranged on the inner sides of the three sets of vertical frames. According to the multi-mold-cavity injection molding machine, multi-mold-cavity injection molding operation that a single person can freely switch and operate a plurality of molds is achieved, the functions of meshing and clamping measures can be synchronously matched while mechanical mold closing is conducted, uniform and comprehensive material distribution operation is conducted on injection molding materials in a multi-channel way on the basis of the spiral heating material extrusion condition, and high efficiency and high quality are achieved.

Devices, systems, and methods for combining and / or delivering injectable materials to a patient. A first device having a first nozzle is rotationally and / or substantially axially moved relative to a second device having a first nozzle port to position the first nozzle relative to the first nozzle port. The second device has a nozzle cavity positioned, dimensioned, shaped, configured and / or dimensioned relative to the first nozzle port to direct axial and / or rotational relative movement of the first and second injectable material transport devices to direct alignment of the first nozzle with the first nozzle port, for example, the nozzle is positioned relative to the first nozzle port.

Manufacturing process for a resulting injection-molded part (T3) in an injection molding machine, wherein a first mold half (7) and a second mold half (8) are arranged on a first mounting plate (2) of the injection molding machine via a first rotary table (6) arranged on the first mounting plate (2), and a third mold half (9) is arranged directly or via the first rotary table (6), wherein a fourth mold half (10) is arranged on a second mounting plate (3) of the injection molding machine directly or via a second rotary table (11) arranged on the second mounting plate (3), and a fifth mold half (12) and a sixth mold half (13) are arranged via the second rotary table (11), wherein a first to eighth step (S1 to S8) are carried out successively as part of the manufacturing process. - wherein in the first and fifth steps (S1, S5) the first and second mounting plates (2, 3) are moved towards each other until -- in the first step (S1) the first and fourth mold halves (7, 10) form a first injection mold, the second and fifth mold halves (8, 12) form a second injection mold, and the third and sixth mold halves (9, 13) form a third injection mold and -- in the fifth step (S5) the second and fourth mold halves (8, 10) form the first injection mold, the first and sixth mold halves (7, 13) form the second injection mold, and the third and fifth mold halves (9, 12) form the third injection mold, - where in the second and sixth steps (S2, S6) -- by injecting a first injectable material (K1) into the first injection mold a first provisional injection molded part (T1), -- by injecting a second injectable material (K2) into the second injection mold a second temporary injection molded part (T2) and -- by injecting a third injectable material (K3) into the third injection mold, the resulting injection molded part (T3) is produced, - wherein in the third and seventh steps (S3, S7) the first and second mounting plates (2, 3) are moved away from each other, so that the first, second and third injection molds are opened, - wherein the first temporary injection molded part (T1) is held in the first mold half (7) in the third step (S3) and in the second mold half (8) in the seventh step (S7), and the second temporary injection molded part (T2) is held in the fifth mold half (12) in the third step (S3) and in the sixth mold half (13) in the seventh step (S7), - wherein in the fourth and eighth steps (S4, S8) the two rotary tables (6, 11) are each rotated by 180° so that the first and second mold halves (7, 8) and the fifth and sixth mold halves (12, 13) exchange their positions, characterized in that in a central area of ​​the mounting plates (2, 3), which is equidistant from the edges of the mounting plates (2, 3), either the fourth mold half (10) or the third mold half (9) is arranged.

The present disclosure relates to injection molding of devices such as cable retainers with integrated wireless marker foil, in particular to a method for injection molding of devices (1) with integrated wireless tags (2), in particular cable ties, comprising the following steps: a) placing a marker foil (5) having two main surfaces (9a, 9b) separated by an edge (10) into a mold cavity (12) of an open mold (11), the marker foil being held in place by a support device (13); b) closing the mold; c) injecting an injection material (21) simultaneously and symmetrically with respect to a main extension plane of the marker foil (5) into the mold cavity portions (14a, 14b) adjoining the two main surfaces of the marker foil, the main extension plane being parallel to the two main surfaces of the marker foil (5), in order to simplify and speed up the manufacturing process of devices with integrated wireless tags or markers. Furthermore, the present disclosure relates to a corresponding molding device and to a corresponding device (1) with integrated wireless tags (2).

The utility model relates to a foaming punching die runner cut-off tool which comprises a cut-off tool body, a cutter fixing plate, a cutter guide seat, a cutter resin sealing guide block, a cutter air cylinder and a tool pad, the cutter air cylinder is installed below a lower die core, the cutter fixing plate is installed at the telescopic end of the upper end of the cutter air cylinder, and the cut-off tool body is installed on the cutter fixing plate. The cutter guide seat is installed below the lower die core, a first through groove penetrating up and down is formed in the cutter guide seat, a groove with the rough or knurled inner wall is formed in the inner side of the lower end opening portion of the first through groove, and a cutter resin sealing guide block is installed in the groove. The device has the advantages that the gap between the cut-off tool and the mold core runner is sealed in a sliding manner through the self-made cutter resin sealing guide block, and the cut-off tool retracts when the runner is used for injecting materials, so that the foaming of a product is not influenced; after material injection is completed, the cut-off tool extends out, and the product is cut off; the structural design is ingenious, reasonable, compact and stable, potential safety hazards are avoided, and the cutting effect is good.

A technique is provided for applying a form-closing / clamping force to a form (800) from one side of a stationary plate (110). An injection molding machine (10) comprises a mold clamping unit (100) that moves a movable platen (120), which carries a movable mold (821, 822), to one side of a stationary platen (110), which carries a stationary mold (811, 812), in order to exert a first mold clamping force from one side of the movable platen (120) on the movable mold (821, 822) and the stationary mold (811, 812); an injection unit (301, 302) that injects material into a space between the movable mold (821, 822) and the stationary mold (811, 812); and a compression unit (312) that exerts a second mold clamping force from the side of the stationary platen (110) on the movable mold (821, 822) and the stationary mold (811, 812). 812).

The utility model discloses a box type degassing device for aluminum bar production, and relates to the technical field of molten aluminum degassing, the box type degassing device comprises a support, the inner wall of the support is fixedly connected with a telescopic rod, the bottom end of the telescopic rod is fixedly connected with a sealing plate, the sealing plate is internally provided with an adjusting device, and the adjusting device is fixedly connected with the telescopic rod. The adjusting device is used for controlling closing of injected materials, a degassing box is arranged at the bottom end of the sealing plate, and a scraping device is arranged in the degassing box; by arranging the adjusting device, a degassing agent and a slag removing agent can be put into molten aluminum in the degassing box, gas and impurities in the molten aluminum are effectively removed, the quality of the molten aluminum is improved, after feeding is finished, the injection barrel is moved, and the molten aluminum can be conveniently and rapidly removed. And the stirring rod is driven to rotate through threaded connection of the adjusting rod and the limiting rod, molten aluminum adhering to the interior of the injection barrel can be scraped, and the situation that follow-up use is affected due to blockage is prevented.

1. The name of the design product: die casting machine nozzle. 2. The use of the design product: used for injecting material into the die cavity of the die casting machine. 3. The design points of the design product: in the shape of the product. 4. The picture or photo that best shows the design points: Design 1 perspective view 1. 5. Design 1 is designated as the basic design.