128 results about "Central layer" patented technology

A shoe or other footwear has a non-removable multi-layer foot-support member (FSM) embedded within the sole. The uppermost layer is a breathable, stretchable textile configured for direct contact with the foot, offering softness and elasticity. Directly beneath it is a containment layer made of elastic fabric partially infused or impregnated with silicone, which stabilizes and restrains the granular contents below. The central layer includes one or two or three sealed chambers filled with a cured mixture of silicone and polymeric granules, forming a deformable medium that yields under pressure and mimics natural granular terrain or sand. Beneath this is a synthetic textile layer that restricts lateral expansion of the granular mixture, and preserves chamber geometry during use. The bottom component is a semi-rigid base that structurally supports and anchors all overlying layers.

The utility model discloses a hook-and-loop fastener assembly for a carpet, and relates to the technical field of hook-and-loop fasteners. Comprising a fixed layer, a top layer arranged above the fixed layer and a bottom layer arranged below the fixed layer, the fixing layer comprises a central layer and hook-and-loop fastener mother tapes positioned on the upper and lower surfaces of the central layer; the top layer comprises a flannelette layer and a first Velcro tape; the bottom layer comprises a second Velcro tape and an anti-skid layer arranged below the second Velcro tape; the anti-skid layer is made of anti-skid silica gel; by adopting the technical scheme provided by the invention, the convenience of later adjustment and maintenance of the carpet is effectively improved.

The present application provides a pre-stressed anti-vibration hammer and a pre-stress determination method and system, the pre-stressed anti-vibration hammer comprising a gapped steel strand, an assembly integrated hammer head and an anchoring clamp, wherein the gapped steel strand comprises a central layer round wire, a middle layer molded wire and an outer layer round wire from inside to outside; a gap is provided between the central layer round wire and the middle layer molded wire, and the gap is filled with a lubricating grease, such that the friction resistance between the central layer round wire and the middle layer molded wire is reduced, and pre-applying a stress to the central layer round wire is facilitated; the middle layer molded wire is of an arch structure, and the arch body structure increases the moment of inertia for a circle center, such that the bending rigidity of the steel strand is enhanced; and two ends of the central layer round wire are connected with the assembly integrated hammer head, the anchoring clamp is assembled in a hollow portion of one end of the assembly integrated hammer head away from the central layer round wire, and is configured to clamp the central layer round wire to which a target stress is pre-applied, a tensile stress generated by an impact load firstly counteracts the tensile stress generated between the outer layer round wire and a middle layer strand after the stress is pre-applied, and the bending rigidity of the steel strand can be increased.

The invention belongs to the technical field of cables, and particularly relates to a layered compression conductor and an anti-sinking environment-friendly polypropylene cable. The layered compressed conductor comprises a central layer and at least three peripheral layers, the central layer and the peripheral layers are copper monofilaments of a circular structure, the compression coefficient of the first layer, close to the central layer, of the peripheral layers is 0.83-0.85, the compression coefficient of the second layer is 0.85-0.88, and the compression coefficients of the outermost layer and the secondary outer layer are 0.90-0.92 and 0.85-0.88 respectively; the anti-sinking environment-friendly polypropylene cable sequentially comprises a layered compression conductor, an anti-sinking conductor shielding layer, an insulating layer, an insulating shielding layer, a metal shielding layer, a binding tape and a sheath layer from inside to outside. The layered compressed conductor is obtained by adjusting the compression coefficient of each layer of the layered compressed conductor, and the anti-depression environment-friendly polypropylene cable is obtained by combining effective cable materials, so that the effect of relieving or avoiding conductor shielding depression is achieved.

The invention discloses a telescopic spaceflight cable suitable for a transformable aircraft, which is formed by sequentially coating an inner layer, a central layer and an outer layer from inside to outside, and the inner layer and the outer layer synchronously and elastically stretch out and draw back. The inner layer is an elastic support body, the central layer is a wire roll body formed by winding a plurality of specially-made wires according to a specific rule, the outer layer is composed of a heat-proof protective sleeve, the heat-proof protective sleeve is composed of a plurality of sections of ripples, and the specially-made wires adopt a composite material multi-layer shielding structure, so that the anti-electromagnetic interference capability of the wire is improved while the flexibility of the wire is ensured. The cable can meet the use requirements of a deformable aircraft cable for being telescopic, small in size, low in weight, resistant to electromagnetic interference and resistant to high temperature.

The invention provides a boost inductor capable of reducing inverter loss, and relates to the technical field of inverters, a magnetic core is made of a graded nanocrystalline soft magnetic composite material, the magnetic core is composed of iron-based nanocrystalline alloy particles, the particle size gradually changes from 10-15 microns of a central layer to 25-50 microns of an outer layer, a gradient structure is formed through a layered compaction process, and the thickness of the gradient structure is larger than that of the iron-based nanocrystalline alloy particles. The winding comprises a main winding and an auxiliary winding, the main winding is a high-conductivity oxygen-free copper wire, the auxiliary winding is a carbon nanotube reinforced copper composite wire containing a multi-walled carbon nanotube with the weight ratio of 1%, the main winding is wound in a standard spiral mode, and the auxiliary winding is inserted between coils of the main winding in a staggered mode and is compacted in a layered mode to form a gradient structure; and the magnetic field distribution is obviously optimized, the eddy current loss is reduced, the stability of the gradient structure is ensured, and the magnetic core has the high saturation flux density of the nanocrystalline alloy and the low loss characteristic of the graded nanocrystalline soft magnetic composite material, so that the effect of improving the high-frequency working efficiency of an inverter is realized.

The invention discloses a low-temperature rectifier, and relates to the technical field of rectifiers, a center layer of the low-temperature rectifier is a high-temperature superconducting tape H3 and a high-temperature superconducting tape H4 which are insulated through a composite board and are symmetrically distributed, a copper layer D2 and a copper layer D3 are symmetrically distributed on the upper side and the lower side of the high-temperature superconducting tape H3, and a copper layer D4 and a copper layer D5 are symmetrically distributed on the upper side and the lower side of the high-temperature superconducting tape H4; a field effect transistor, a first insulating layer, a second insulating layer, a first copper layer, a copper signal layer and a copper-plated blind hole are arranged on one side, far away from the corresponding high-temperature superconducting tape, of any one of the copper layers D2-D5; the two first copper layers at the upper end and the lower end of the high-temperature superconducting tape H3 or the high-temperature superconducting tape H4 are of an integrated structure, and the ends, away from the high-temperature superconducting tape H3, of the two first copper layers are connected with the high-temperature superconducting tape H1 and the high-temperature superconducting tape H2 which are connected with the corresponding field-effect tubes respectively. The problems of low efficiency, high heating, poor universality, low power density and the like of a current low-temperature rectification scheme are solved.

The present invention relates to a loose piece of a composite material sandwich structure, which comprises a central layer, a metal embedded part, a strengthening layer and a surface layer. The strengthening layer wraps the central layer, and the surface layer is coated on the outer surface of the strengthening layer. The central layer, the strengthening layer and the surface layer are all composite materials. One end of the metal embedded part is embedded between the central layer and the strengthening layer, and the other end thereof passes through the strengthening layer and the end face is lower than or flush with the outer contour surface of the surface layer. The present invention also relates to a manufacturing process of the loose piece of the composite material sandwich structure. The purpose of the loose piece of the composite material sandwich structure and its manufacturing process is to solve the problems of weight reduction and profile accuracy of large-sized loose pieces.

The utility model provides an earth structure demonstration model device, which relates to the technical field of earth structure demonstration and comprises a sphere, and the sphere is divided into an outer layer used for representing the earth crust, an interlayer used for representing the earth curtain and a central layer used for representing the earth core from outside to inside. The sphere is divided into the outer layer used for representing the earth crust, the interlayer used for representing the earth curtain and the center layer used for representing the earth core, and the outer layer, the interlayer and the center layer are equally divided into two halves, so that during display, the outer layer, the interlayer and the center layer on the two sides can be selected to be separated so as to be convenient for personnel to explain the earth structure; the outer layer, the interlayer and the center layer on the same side can be completely separated, further explanation by personnel is facilitated, students can more intuitively understand the explanation in a splitting mode after combination, and understanding of the students is facilitated.

The invention relates to a fabric that comprises: - an upper layer, comprising warp and weft yarns, defining a right side of the fabric; - a lower layer, comprising warp and weft yarns, defining a wrong side of the fabric; - a median plane, situated between the upper layer and the lower layer; and - a central layer, arranged on either side of the median plane, comprising at least warp and / or weft binding yarns. This fabric is characterised in that the binding yarns are configured to maintain a certain distance between the median plane and the right side and / or the wrong side, said distance varying in the warp direction of the fabric and / or in the weft direction of the fabric, so as to form a raised pattern on a surface of the fabric. The present invention also relates to a method for manufacturing a fabric according to the invention.

The present invention relates to a multilayer structure (1) for food packaging comprising: one or more central layers (10) of polymeric material stacked one on the other and defining a central assembly (11) having two free first opposite surfaces (11a, 11b); a barrier layer (20) on each free first surface (11a, 11b) of the central assembly (11) having a relative second barrier surface (20a, 20b), each barrier layer (20) is an ethylene-vinyl-alcohol (EVOH) layer.

The utility model relates to the technical field of concrete plate transfer, in particular to a transfer device for producing autoclaved aerated concrete plates, which comprises a transfer trolley and universal wheels, the universal wheels are mounted at four corners of the lower end of the transfer trolley, a bottom plate is fixedly connected to the upper end of the transfer trolley, the upper end of the bottom plate is fixedly connected with a transverse plate at the lowest layer, and the bottom plate is fixedly connected with a transverse plate at the lowest layer. Discharging assemblies are distributed on the upper surface of the transverse plate, and a lifting assembly is arranged on the outer wall of the transverse plate. Through cooperation of a second servo motor, a screw, a first oblique beam, a second oblique beam, transverse plates, grooves and concrete slabs, the second servo motor is controlled to reset, the multiple layers of transverse plates are released and unfolded again, then the concrete slabs of the central layer of transverse plates and the lowest layer of transverse plates are placed, and the charging process of the concrete slabs is achieved. The problems that when the concrete slab on the uppermost layer is loaded or taken, the concrete slab on the uppermost layer is very inconvenient to load or take due to the high position, and the concrete slab is prone to falling off are effectively solved.

In a production of a non-oriented electrical steel sheet comprising subjecting a slab containing a particular composition to a hot rolling, a hot-band annealing, a cold rolling to form a cold-rolled sheet and a finish annealing, a rolling reduction of a final finish rolling pass in the hot rolling is not less than 10%, and a coiling temperature is not higher than 620° C., and a soaking temperature in the finish annealing is 600 to 800° C. to achieve such properties that a recrystallization ratio is less than 100% as an area ratio, a strength C is not less than 2.0 and a strength difference C−D is not more than 2.0, where C is a strength at Φ=0° and φ1=0° and D is a strength at Φ=20° and φ1=0° in a section of φ2=45° of ODF obtained in a central layer of a sheet thickness.

A film for a pouch having a central layer, a first LLDPE tie layer, a second LLDPE tie layer, an outside HDPE layer, and inside HDPE layer and an inner LLDPE layer. The central layer is an ethylene EVOH, having an inside and an outside opposite the inside and a thickness. The first LLDPE tie layer is on the inside of the EVOH. The second LLDPE tie layer is on the outside of the EVOH. The at least one outside HDPE layer on an outside of the second LLDPE tie layer opposite the EVOH layer. The at least one inside HDPE layer on an inside of the first LLDPE tie layer opposite the EVOH layer. The inner LLDPE layer on an innermost of the at least one inside HDPE layer. The inside PE thickness being at least twice the outside PE thickness.

The utility model discloses a self-adhesive leveling-free anti-slip ceramic tile which sequentially comprises an anti-slip layer, a central layer and a self-adhesive layer from outside to inside, a buffer cushion layer is arranged at the corner below the self-adhesive layer, the ceramic tile and tools are prepared before construction, a ground base layer is checked, uneven positions are processed, meanwhile, the integrity of the central layer of the ceramic tile is checked, and the self-adhesive leveling-free anti-slip ceramic tile is obtained. During paving, release paper of the self-adhesive layer is torn off, the ceramic tile is adhered from one corner, leveling is avoided by utilizing the elasticity of the buffer cushion layer, a rubber hammer is used for adjusting, stripes and particles of the anti-skid layer are checked after paving is completed, the anti-skid effect is ensured, and the paving flatness and firmness of the ceramic tile are checked at the same time. The ceramic tile simplifies the construction process, has good anti-skid performance and structural strength, and effectively improves the construction efficiency and the use safety.

A personal absorbent article (20) comprising in this order a topsheet (24), an optional acquisition layer (50), an apertured central layer (60) and a backsheet (25). The apertured central layer may be a nonwoven comprising or consisting of superabsorbent fibers. The topsheet, together with the optional acquisition layer when present, at least partially conforms to the apertures of the apertured central layer so that a three-dimensional surface on the wearer-facing side of the article is provided.

The invention provides a recombinant integrated material as well as a preparation method and application thereof. The recombined integrated material has a symmetrical different composite structure; the symmetrical different composite structure comprises a central layer, a middle layer and an outer layer, the middle layer is in contact with the outer surface of the central layer, and the outer layer is in contact with the surface, opposite to the central layer, of the middle layer; the central layer comprises a first recombination integration material unit, the middle layer comprises a second recombination integration material unit, and the outer layer comprises a third recombination integration material unit; if the static bending intensity of the first recombination integrated material unit is mu1, the static bending intensity of the second recombination integrated material unit is mu2, and the static bending intensity of the third recombination integrated material unit is mu3, the following relation exists: mu1lt; [mu] 2lt; mu3; if the elastic modulus of the first recombination integrated material unit is mu '1, the elastic modulus of the second recombination integrated material unit is mu' 2, and the elastic modulus of the third recombination integrated material unit is mu '3, the following relations exist: mu' 1lt, mu '2lt and mu' 3.

The invention relates to a flat pressure sensor unit, in particular a pressure sensor sheet (3), comprising first conductor paths (310) and second conductor paths (32) and a central layer (33) arranged between the first and the second conductor paths (310, 320). The first and second conductor paths (310, 320) cross one another, spaced apart by the central layer (33), whereby cross-over points (30) are formed in order to detect, as sensors, a spacing change between the first and second conductor paths (310, 320) generated by an external application of pressure. The conductor paths (310, 320) are sewn onto at least one material layer (31, 32). First and second connecting paths (390, 391) are provided, leading away from the first and second conductor paths (310, 320), extending towards at least one electronics unit (380, 381) and ending at the at least one electronics unit (380, 381). The first and second conductor paths (390, 391) are sewn on the at least one material layer (31, 32). The flat pressure sensor unit can be easily and economically produced and allows for flexible design both in the selection of the material layers (31, 32) and in the arrangement of the conducting and connecting paths (310, 320, 390, 391).

The invention relates to a fabric comprising: - an upper layer, comprising warp and weft yarns, defining a right-side surface of the fabric; - a lower layer, comprising warp and weft yarns, defining a wrong-side surface of the fabric; - a median plane, disposed between the upper and lower layers; and - a central layer, disposed on either side of the median plane, comprising at least some binding warp and / or weft yarns. This fabric is particular in that the binding yarns are configured to maintain a certain distance between the median plane and the right-side and / or wrong-side surface, said distance varying along the warp direction of the fabric and / or along the weft direction of the fabric, so as to form a relief on a surface of the fabric. The present invention also relates to a method for manufacturing a fabric according to the invention. Figure for the abstract: Fig 1

The invention relates to a cheese mold (1) configured for molding and pressing pressed cheeses, particularly Beaufort cheese. The cheese mold (1) comprises: a central layer (5) made of a first material and having a first thickness, the central layer (5) defining a structure of the cheese mold (1); an intermediate layer (6) made of a second material and having a second thickness, completely covering the central layer (5), the intermediate layer (6) ensuring the rigidity of the cheese mold (1); and an outer layer (7) made of a third material and having a third thickness, the outer layer (7) being designed to cover the intermediate layer (6), the outer layer (7) being configured to define an external surface of the cheese mold (1) and to be in contact with the cheese. (Fig. 3)

A glazing unit includes a stack of layers between a lower substrate and a transparent upper substrate. The stack of layers includes two dielectric layers, a lower layer and an upper layer, the lower layer including a first layer made of an adhesive material, referred to as first adhesive layer, an intermediate layer made of a polymer material, in contact with the first adhesive layer, and having a refractive index that is substantially identical to that of the upper layer, a central layer in contact, in a textured interface, with each of the intermediate and upper layers, the central layer being configured so that the glazing has diffuse reflection properties.

A method for making a braking band (2) for a brake disc (1) for a disc brake, comprising the following steps: a) preparing a mold (10) having an inner cavity (11), which comprises a first portion (11a) of a shape corresponding to the braking band (2) to be made; b) preparing a band preform (20) comprising a central layer (200) made of porous ceramic material comprising silicon carbide (SiC), an upper outer layer (201) and a lower outer layer (202), said upper outer layer (201) and said lower outer layer (202) being made of porous ceramic material comprising silicon carbide (SiC) and infiltrated with silicon (SiC+Si), said upper outer layer (201) and said bottom outer layer (202) being arranged in an opposing way and on opposite sides of the central layer (200); c) placing said band preform (20) inside the mold at the first portion (11a) of said inner cavity (11); and d) injecting a liquid or semi-solid aluminum alloy inside the entire inner cavity (11) of the mold (11) so as to infiltrate only the central layer (200) of said band preform (20) made of porous ceramic material with said aluminum alloy, obtaining at the first portion (11a) an aluminum metal matrix composite reinforced by said central preform (200) which defines the braking band (2) to be made. A braking band and a brake disc are made at least with the aforesaid method.

The invention provides a tapered waveguide preparation method and a tapered waveguide, and belongs to the technical field of waveguides, and the tapered waveguide preparation method comprises the steps: S1, sequentially forming a lower coating layer and a first center layer on a substrate; s2, forming photoresist with an inclined side wall on the first central layer; s3, etching the first central layer by taking the photoresist with the inclined side wall as a mask to form a conical central layer; s4, adjusting the thickness of the conical central layer according to the application wavelength of the conical waveguide; and S5, forming an upper coating layer on the conical center layer to prepare the conical waveguide. The method has the beneficial effects that the photoresist with the inclined side wall is used as the mask to form the conical central layer with the inclined side wall, a gray scale photoetching plate or an expensive direct-writing gradient photoetching machine does not need to be additionally customized, the production cost is reduced, and the method can be popularized and applied in a large scale.

The invention relates to a silage film with a total thickness between 75 µm and 150 µm, comprising at least one outer and at least one inner layer, a central layer composed of a soft polyethylene (PE), selected from linear low-density polyethylene (LLDPE) or low-density polyethylene (LDPE), at least one functional layer arranged on either side of the central layer and at least one intermediate layer positioned between each functional layer and the outer or the inner layer. At least one functional layer is composed of a special polyethylene that replaces conventional barrier layers. The silage film is entirely free of any barrier layers, including polyamide (PA) or ethylene vinyl alcohol (EVOH).

This invention discloses a cold-cut anti-fraying webbing, relating to the field of webbing technology. It includes a webbing body, which is an integrated composite structure comprising, from the inside out, a reinforcing central layer, a first side buffer layer and a second side buffer layer, a first surface skin-friendly layer and a second surface skin-friendly layer, side edge locking ribs, and a surface penetrating shaping coating covering the outer side of the webbing body. This invention relies on a triple anti-fraying structure: internal low-melting-point irregularly shaped adhesive yarn multi-dimensional cohesion constraint, side dense locking rib edge limiting, and surface shaping coating gap reinforcement. This allows the webbing to be directly cold-cut using a room-temperature sharp blade, enabling free cutting at any transverse or longitudinal position. The cut edge requires no heat-sealing, no glue-sealing, and no sewing.

The utility model discloses a novel high-temperature-resistant ceramic fiber board, which belongs to the technical field of ceramic fiber boards and comprises a supporting and fixing layer, the supporting and fixing layer is a central layer, and a reinforcing layer, a ceramic fiber layer, a buffer layer, an anti-impact protective layer and a wear-resistant layer are sequentially and symmetrically arranged on the top surface and the bottom surface of the supporting and fixing layer outwards; wherein the anti-impact protection layer comprises an inner protection layer, and the top surface and the bottom surface of the inner protection layer are respectively coated with an outer protection layer. By adopting the multi-layer composite structure which is sequentially arranged from the center layer to the outside, the whole plate has the characteristics of high strength, difficulty in deformation, heat preservation, heat insulation, strong impact resistance and the like, so that the whole plate is wider in application range and longer in service life.

The invention discloses a sampling device for a sludge layer at the bottom of a reservoir and relates to the field of hydraulic engineering. The device comprises a sampling barrel, a connecting shaft is rotatably mounted in the sampling barrel, the connecting shaft is provided with a transmission mechanism, the transmission mechanism comprises a worm fixedly mounted on the connecting shaft, the worm is meshed with a worm gear, one ends of first connecting rods are fixedly mounted on the two sides of the worm gear, and the other ends of the two first connecting rods are rotatably mounted on a second connecting rod; a moving plate is fixedly mounted on the second connecting rod and penetrates through the sampling opening to extend out, and the sampling opening is formed in the sampling barrel. By arranging the grab bucket type sampling mechanism, a grab bucket goes deep into a sludge layer for direct grabbing during sampling, and the problem of center layering deviation caused by large viscosity of sludge and the inner wall of a traditional sampling pipe is avoided. Samples at different positions can be uniformly obtained, the overall condition of a sludge layer can be reflected more truly, the accuracy and representativeness of the samples are improved, and reliable data are provided for subsequent research and analysis.

The present invention provides a laminated fabric with a gradient interface enhancement structure and high coating adhesion strength, and a preparation method thereof, belonging to the technical field of coated fabrics. The laminated fabric of the present invention is composed of multiple layers of materials, including a high-performance fabric as the central layer, and thermoplastic fiber glue nets 1, non-woven fiber felts, thermoplastic fiber glue nets 2, and thermoplastic polymer film layers symmetrically arranged in sequence; wherein, the high-performance fabric exerts the advantages of tensile and puncture properties, and the non-woven fiber felt provides the advantage of tear resistance. By roughening the surface of the high-performance fiber itself to generate micro-nano fibers, and combining with the non-woven fiber felt to realize the interface transition between the high-performance fiber and the polymer matrix, that is, using the micro-nano fibers in the high-performance fabric and the fibers in the non-woven fiber felt to provide a gradient interface structure, thereby improving the coating adhesion strength. The present invention realizes the interface combination between the high-performance fiber and the polymer matrix through the combination of multiple mechanisms, and at the same time, the non-woven fiber felt can also improve the tear strength.

A method for manufacturing a microelectromechanical structure comprises providing a carrier substrate (110) having a central layer (140) and a surface and an insulating layer (122) arranged on one side of the central layer and applied on the surface; applying a silicon layer (150a) on the insulating layer; structuring the silicon layer to form a trench (156) extending locally through the silicon layer; passivating the silicon layer wherein the trench is filled and a passivation layer is formed (154); the passivation layer is structured, a sacrificial region (153) and a functional region (152) are formed, and the sacrificial region is locally free of the passivation layer; a portion of the carrier substrate (110) is removed to form a new surface, and a second insulating layer (172) is formed on the new surface. Then, repeated application, structuring and passivation are performed on the second insulating layer for the second silicon layer (180a) and the structuring is repeated for the second passivation layer (184) to form sacrificial regions and functional regions, and all of the sacrificial regions are removed.

The invention provides a manufacturing method of a liquid cooling plate of a copper-aluminum structure, and the manufacturing method comprises the steps: S1, obtaining a bottom plate which comprises a central layer and a coating layer wrapping the central layer, the central layer is made of aluminum, and the coating layer is made of copper; s2, the bottom plate is machined, so that a groove, a liquid inlet hole and a liquid outlet hole are formed in the bottom plate, and the liquid inlet hole and the liquid outlet hole communicate with the groove; and S3, a cover plate is obtained, the lower surface of the cover plate covers the upper surface of the bottom plate, the cover plate is made of a copper material, and an installation area used for being connected with a chip is formed on the upper surface of the cover plate. According to the manufacturing method of the liquid cooling plate of the copper-aluminum structure, the liquid cooling plate which is light in weight, low in cost and high in heat dissipation efficiency can be manufactured.