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197results about How to "Wide thickness range" patented technology

Biaxial stretching polypropylene film and preparation method thereof biaxial stretching polypropylene film and preparation method thereof

The invention discloses a biaxially oriented polypropylene film which has a composite structure; wherein, one surface is a heat-variable adhesive coating which contains polyolefine with a melting point between 50 to 120 DEG C; the adhesive coating can be directly and thermally composited with paper and polyolefine materials. The invention also provides a preparation method for the biaxially oriented polypropylene film which includes the following technical steps: a, the material of a middle layer is fed into an extruding machine; b, the material of the adhesive coating is fed into an auxiliary extruding machine; c, the material of a bottom layer is fed into another auxiliary extruding machine; d, the materials after melting and plasticization are extruded, converged and then form a composite co-extruded hunch by a T-shaped die head; 3, after the obtained hunch is cooled and shaped, biaxial stretching is then carried out on the hunch; after the processes of thickness detecting, side cutting, single surface or double surface corona discharge, 12 to 80 mum of the biaxially oriented polypropylene film is curled at the location of a winder; wherein, the thickness of the adhesive coating is 0.8 to 10 mum.
Owner:QUANZHOU LICHANG PLASTIC

Expanded vermiculite cement board capable of releasing negative ions and preparation method thereof

The invention relates to an expanded vermiculite cement board capable of releasing negative ions and a preparation method thereof. The preparation method comprises the following steps: (1) weighing of raw materials: weighing the raw materials consisting of expanded vermiculite, cement, tourmalinite and an accessory by volume; (2) material mixing: uniformly mixing the raw materials under stirring by using a stirrer; (3) molding: allowing slurry obtained after uniform mixing under stirring to pass through a head box and then to be conveyed to running felt on a slurry-carrying felt conveying roller, carrying out natural dehydration and vacuum dehydration so as to form a material layer and winding the material layer onto a molding drum for molding by rolling; (4) maintenance: subjecting a molded product to normal-temperature maintenance for 3 to 6 h at first and then to steam maintenance in an autoclave at a pressure of 1 MPa and a temperature of 100 to 200 DEG C for 10 to 18 h; and (5) drying: carrying out drying at a temperature of 70 to 100 DEG C for 1 to 3 so as to obtain the expanded vermiculite cement board. Compared with the prior art, the expanded vermiculite cement board provided by the invention has the advantages of capacity of releasing negative oxygen ions, environment friendliness, good practicality and the like.
Owner:SHANGHAI CIMIC HEALTHY ENVIRONMENT TECH CO LTD

Strip stretch bending leveller

The invention discloses a strip stretch bending leveller. The leveller comprises a stand housing, two bending roll systems, two levelling roll systems, four roll system gap adjusting mechanisms, roll change devices, quick opening devices, guide rolls and a tension measuring roll, wherein six windows are arranged in the stand housing and are respectively correspondingly provided with a 1# upper bending roll set, a 1# lower bending roll set, a 2# upper bending roll set, a 2# lower bending roll set, a 1# levelling roll set and a 2# levelling roll set up and down from left to right; the machine is provided with standby roll sets with diameters different from the diameters of the two bending rolls; the roll change devices are arranged on the top of the stand housing; and connecting rods are arranged between the ends of the roll change devices and the ends of the two bending roll systems. The leveller has the following effects: the working rolls in the bending roll sets have different diameters and can be freely combined; the thickness range of the levelled strip is wider and the levelling effect is better; the roll sets have longer lives; only the working rolls in the bending roll sets have different diameters and the intermediate rolls, supporting rolls and shaft end supports are shared; and the leveller is equipped with the roll change trolleys, thus realizing quick roll change.
Owner:WISDRI ENG & RES INC LTD

Steel plate for low-temperature spherical tank container and production method thereof

The invention discloses a steel plate for a low-temperature spherical tank container and a heat treatment production method thereof. The steel plate is prepared from less than or equal to 0.12wt% of C, 0.15-0.50wt% of Si, 1.2-1.6wt% of Mn, 0.3-0.8wt% of Ni, less than or equal to 0.010wt% of P, less than or equal to 0.005wt% of S, 0.020-0.045wt% of Al, less than or equal to 0.040wt% of Nb and the balance Fe and unavoidable impurities by melting. The steel plate utilizes low-price carbon and manganese solid solution reinforcement, and through adjustment optimization of a ratio of other elements in the steel plate, good steel plate mechanical properties are ensured under conditions of low carbon equivalent, the steel plate has a good microstructure, good comprehensive performances and welding performances, a cost is reduced and market competitiveness is improved. Through a reasonable heat treatment technology, a uniform ferrite-tempered sorbite microstructure is obtained and impact toughness of a large-thickness steel plate is improved. The steel plate has high purity, impact energy greater than 170J at a temperature of -70 DEG C, an elongation rate of more than 25%, good simulation of performances after welding and welding performances, and good mechanical properties.
Owner:WUYANG IRON & STEEL

Controller capable of controlling thickness of steel hogging moment steel bar protecting layer of bar concrete cast-in-situ plate and thickness of bar concrete cast-in-situ plate

The invention relates to a controller capable of accurately controlling the thickness of the hogging moment steel bar protecting layer of a steel bar concrete cast-in-situ plate and the thickness of the steel bar concrete cast-in-situ plate, which comprises three three-way stand bars and a vertical column, wherein the vertical column is connected with the three-way stand bars; the lower part of the vertical column is provided with an annular bracket; the annular bracket is articulated with the three-way stand bars; three surfaces of the upper part of the vertical column are square, and one surface of the upper part of the vertical column is circular; the upper part of the vertical column is provided with a cast-in-situ plate thickness control hole and an internal thread locking control hole vertically communicated with the cast-in-situ plate thickness control hole; a compensation rod and a locking extraction bolt screwed with the locking control hole are arranged in the internal thread locking control hole; a cast-in-situ plate thickness ruler marking bolt penetrating through the cast-in-situ plate thickness control hole is arranged on the vertical column, and two hogging moment steel bar locking claw rods are linked with the cast-in-situ plate thickness ruler marking bolt; and seal plugs are arranged in both sides of the cast-in-situ plate thickness control hole. The invention has wide application range and is particularly suitable for constructing various steel bar concrete cast-in-situ plates and large-volume steel bar concrete foundation bottom plates or some large-scale equipment foundations and high-thickness steel bar concrete cast-in-situ plates.
Owner:河北建设集团天辰建筑工程有限公司 +1

Composite metal plate process

ActiveCN103753935AReduce the coefficient of thermal expansion and deformationHigh composite strengthLaminationLamination apparatusComposite strengthTectorial membrane
The invention belongs to the technical field of decorative building materials, and in particular relates to a composite metal plate process. The process comprises the following steps: (1) preparing a plastic core material; (2) performing coextrusion molding on the plastic core material and metal belts, namely respectively bonding adhesive films on the inner sides of the upper metal belt and the lower metal belt, melting the adhesive films by using excess heat during the extrusion of the plastic core material and performing the coextrusion bonding on the plastic core material with the upper metal belt and the lower metal belt to form an integrated structure so as to obtain a composite metal plate; (3) bonding a protective film on the composite metal plate; (4) cooling; (5) levelling; (6) trimming; and (7) discharging. According to the process, the traditional high-temperature compounding is converted into the low-temperature compounding; the compounding is performed by using the excess heat after the extrusion of the plastic core material, so that a coefficient of the swelling deformation of the metal material during the heating is greatly decreased while the composite temperature is increased by 20 DEG C and the composite strength of the composite metal plate can be improved by more than 30%. The energy saving effect of the process is obvious, so that the energy consumption of a compounding machine is greatly decreased, wherein the energy can be saved by more than 50%. As a result, the complexity of the process and the waste of the materials are reduced; and the phenomenon that the metal surface is damaged due to a high temperature is avoided.
Owner:ZHEJIANG KANGZHAN NEW BUILDING MATERIALS

A novel air cushion icebreaker and an ice breaking method

The invention relates to the technical field of ship ice breaker, in particular to a novel air cushion ice breaker and an ice breaker method. The utility model relates to a novel air cushion icebreaker, which comprises an air cushion vehicle, a force arm system and an induction heating ice breaking system. The hovercraft is the whole main body power part, and the hovercraft bow is U-shaped structure; The force arm system is located at the front end of the hovercraft and is connected between the U-shaped structure of the hovercraft bow. The circumferential shape of the induction heating ice breaking system is elliptical/circular, which is located at the front end of the force arm system and connected to the front end axis of the force arm system. A novel air cushion ice breaking method comprises a thinner ice breaking mode, a common ice breaking mode and a thicker ice breaking mode, wherein, the air cushion ice breaking method comprises a thinner ice breaking mode, a common ice breakingmode and a thicker ice breaking mode. The invention improves the low-temperature ice-breaking adaptability and ice-breaking efficiency of the ice-breaking system, enhances the ice-breaking capabilityof the ice-breaking system, and ensures the safety of the ice-breaking operation of the air cushion icebreaker on the unstable ice surface by the good amphibious performance of the air cushion icebreaker, so that the ice-breaking device can flexibly break ice at any position on the ice surface.
Owner:HARBIN ENG UNIV

System for measuring longitudinal wave thickness of pulse laser

The invention belongs to measurement techniques, relates to a thickness measurement system, and in particular relates to a system for measuring longitudinal wave thickness of a pulse laser, which is applied to thickness measurement of metal materials or non-metal materials. According to the system for measuring the thickness, a beam splitter mirror and a convex lens are arranged on one same light path in sequence; a photodiode is arranged on a reflection light path of the light slitter mirror and is used for receiving the reflection light of the beam splitter mirror; an electric signal output from the photodiode is connected with a receiving end of a signal acquisition card in an electronic computer; another receiving end of the signal acquisition card is connected with the output end of a laser interferometer; the pulse laser and the laser interferometer are arranged on two sides of a tested sample in a centering manner; and the tested sample is arranged on a two-dimensional translation platform. According to the system, the laser interferometer is adopted to detect an ultrasonic longitudinal wave, and the system can be used for on-line measurement and used in a high temperature environment; and by adopting the mode that the pulse laser and the laser interferometer are arranged in a centering manner and the tested sample is arranged on the two-dimensional electric control translation platform, the rapid two-dimensional scanning on the surface of the tested sample through laser is realized.
Owner:CHINA AERO POLYTECH ESTAB

Preparation method of long-narrow trench mask plate for vapor plating

InactiveCN103205675AGuarantee thickening and stabilitySolve the problem of not being able to reach the substrateVacuum evaporation coatingSputtering coatingShadowingsEtching
The invention relates to a preparation method of a long-narrow trench mask plate for vapor plating, and aims to mainly solve the technical problem that organic particles cannot reach a substrate due to shadowing of a mask plate aperture wall during vapor plating in the existing OLED (organic light-emitting diode) manufacturing technologies. The preparation method of a long-narrow trench mask plate for vapor plating provided in the invention adopts a double-side etching process, and the method includes the steps of: conducting etching on the ITO (indium tin oxide) surface of the mask plate material to form ITO surface long-narrow trench apertures (1); performing etching on the vapor plating surface of the mask plate to form long-narrow trench apertures (2), making the long-narrow trench apertures (2) coincide with the ITO surface long-narrow trench apertures (1) in centers, and bringing the long-narrow trench apertures (2) into central symmetry; designing the aperture walls with certain concave curvature, thus forming vapor plating taper angles of 30-50 degrees; and performing etching to form the mask plate with gourd apertures formed by the intercommunicated small size long-narrow trench apertures (1) on the ITO surface and large size long-narrow trench apertures (2) on the vapor plating surface. According to the technical scheme, the problem is well solved. Thus, the method can be used in the industrial production of organic light-emitting diodes.
Owner:KUN SHAN POWER STENCIL

Belt winding aid and method for aiding in cold steel strip winding by using same

ActiveCN102120229AEffectively wrapGuaranteed tidyHydraulic cylinderStrip steel
The invention relates to a belt winding aid and a method for aiding in cold steel strip winding by using same. The trolley of the belt winding aid is connected with a first hydraulic cylinder and slides horizontally along a base under the push of the first hydraulic cylinder, and a turning arm, of which the initial positions are below, is arranged on the two sides of the end part of the trolley parallelly and connected with a second hydraulic cylinder movably and can rotate upward under the push of the second hydraulic cylinder; a guide plate is arranged above the turning arm and keeps a fixed distance from a winding drum; a belt is tensioned or loosened by a third hydraulic cylinder, and the turning arm drives the belt to be wound on or released from the winding drum through a belt wheel arranged on the turning arm; and the upper end of the turning arm is provided with a rocker which can rock up and down, and a roller is arranged on the end part of the rocker. When the device and the method are adopted, an aid is provided for the winding of a thick steel strip, the steel strip can effectively wind on the winding drum, and the edge of a steel coil is ordered; and the device and the method are applicable to various planishers and the thickness range of cold steel strips to be wound with aid is enlarged considerably.
Owner:WISDRI ENG & RES INC LTD

Assembled door pocket frame with adjustable width

The invention discloses an assembled door pocket frame with the adjustable width. The assembled door pocket frame comprises a main frame and an auxiliary frame capable of being assembled with the main frame. An auxiliary frame fixing groove is formed in one side of the main frame, and a plug matched with the auxiliary frame fixing groove is formed in one side of the auxiliary frame. The assembled door pocket frame is characterized in that a U-shaped connector is fixed in the auxiliary frame fixing groove, the opening direction of the U-shaped connector is the same as that of the auxiliary frame fixing groove, a concave-convex structure is formed in the inner edge of the side edge, close to the wall, of the U-shaped connector, an adjusting connector is fixed to the outer edge of the side, close to the wall, of the plug, and a convex-concave structure matched with the concave-convex structure is formed in the outer edge of the side, close to the wall, of the adjusting connector. According to the assembled door pocket frame with the adjustable width, the width of the door pocket frame can be adjusted according to the thickness of the wall, assembly is fast and convenient, the assembled door pocket frame is firm and stable, quantity production is suitable, and the problem that installation of an existing high-end wood door needs customization is solved.
Owner:黄仕哲
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