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153results about How to "Short turnaround time" patented technology

Process for producing polyester industrial yarns by liquid-phase tackified melts in multi-end direct spinning manner

The invention discloses a process for producing polyester industrial yarns by liquid-phase tackified melts in a multi-end direct spinning manner, which belongs to the technical field of polyester industrial yarns and includes the following steps: liquid-phase tackifying; obtaining high-viscosity polyester melts with intrinsic viscosity ranging from 0.90dl / g to 1.10dl / g by tackifying low-viscosity polyester melts in a liquid phase; double-end spinning; directly conveying the polyester melts after being subjected to liquid-phase tackifying to different spinning positions capable of spinning in 16-24 ends; drafting and thermal-forming; winding and forming; and utilization of a twin winding machine to perform high-speed winding of 16-24 spindle spinning cakes. In the process, 16-end direct spinning of high-strength or low-shrinkage polyester industrial yarns with a single end ranging from 800D to 1300D and 24-end direct spinning of low-denier polyester industrial yarns with a single end ranging from 100D to 500D can be realized on the same spinning position, and product production efficiency is high, performance is stable, production energy consumption and equipment investment cost are low.
Owner:ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO LTD

Ultra-high-flexibility concrete inorganic decorative board having pattern-contained surface and preparation method thereof

The invention, which relates to the technical field of building decoration materials, discloses an ultra-high-flexibility concrete inorganic decorative board having a pattern-contained surface. The ultra-high-flexibility concrete inorganic decorative board is made of ultra-high-flexibility concrete reinforcement bars by means of prefabrication, wherein the ultra-high-flexibility concrete reinforcement bars have the compressive strength greater than 100 MPa and the bending strength greater than 16 MPa. A decoration pattern is formed on the upper surface of the decorative board; and communicatedmounting bolt holes are formed in the four corners of the decorative board. The reinforcement bars are criss-cross webs; and the adjacent decorative boards are connected by using structural sealants.According to the invention, the inorganic decorative board that is prepared by using ultra-high-flexibility concrete based on vacuum defoaming has characteristics of high flexibility, diversified decorative effects, compact structure without pores, short mold turnover period, relatively low price, good fire-resistant performance, good staining-resistant and waterproof properties, and high durability and is suitable for development and application of green energy-saving decorative materials.
Owner:黄贺明

Method for constructing high pier

The invention discloses a method for constructing a high pier, which comprises the following steps of: 1) constructing a first section of pier through at least two upper and lower templates; 2) after concrete strength in a bottom template is more than or equal to 75 percent of design strength and concrete strength in the uppermost template is more than or equal to 2.5Mpa, detaching the bottom template and turning the bottom template above the uppermost template to serve as a second section of pier for installation, and finishing construction of the second section of pier; and 3) repeating the step 2) until construction of the whole pier is finished. Compared with a sliding formwork method, the method has the advantages that: the molding period is short, the pier is convenient to construct, and the method is convenient to operate; and compared with a creeping formwork method, the method has the advantages that: the molding period is short, a high scaffold is not needed to be erected, a few materials are occupied, and construction cost is low. The method has the advantages of sliding formwork and creeping formwork construction methods, the turnover period of the template is short, the construction period of each section of pier is short and is generally about five days, and the concrete joint of the pier has high quality.
Owner:TIANJIN 20 CONSTR

Construction method for bare concrete prefabricated stand board

InactiveCN103334588AHigh densitySmooth surface and good decorative effectBuilding material handlingReinforced concreteRebar
The invention relates to the field of concrete prefabricated members, in particular to a construction method for a bare concrete prefabricated stand board. The method comprises construction preparation, template manufacturing, steel bar framework manufacturing, concrete casting and vibrating, curing, demolding, piling and marking, and is characterized by comprising the following specific steps of: (1) making preparation for construction; (2) manufacturing a template; (3) manufacturing a steel bar framework; (4) coating an optical parting agent; (5) arranging a bracket; (6) inserting the steel bar framework into a mold; (7) assembling a steel mold; (8) fixing an embedded part and a hoisting ring; (9) performing self-checking and rechecking; (10) casting and vibrating concrete; (11) curing; (12) demolding and drawing; and (13) piling and marking. Compared with the prior art, the construction method has the beneficial effects of easiness and convenience in manufacturing, short turnover period, accurate geometric size, high construction speed, batch production and laminated assembly; due to the adoption of a prefabricating process, the engineering cost is reduced; and the construction method is particularly suitable for assembled reinforced concrete structures with high decorating requirements in large-sized stadiums.
Owner:ANSHAN NORTHEAST CONSTR ARCHITECTURAL ENG
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