32results about How to "Effective improvement" patented technology

Disclosed is a method for producing a modified rosin ester resin composition for lithographic ink varnish wherein a rosin (A), an acid-modified rosin (B) obtained by modifying the rosin (A) with an alpha,beta-unsaturated dicarboxylic acid and / or an anhydride (b) thereof, an oil-modified rosin (C) obtained by modifying the rosin (A) with a vegetable oil (c) having an iodine number of not less than140, and a tri- or more valent polyol (D) are reacted with one another.

The invention belongs to the field of aluminum material processing, and specifically relates to a method for improving double-zero aluminum foil annealing heat drums. During the slitting process of aluminum foil rolls, the flattening pressure, support pressure and tension of the slitting machine are lowered. Continue to wrap the extended aluminum foil on the aluminum foil roll, so that wrinkles will be generated when the extended aluminum foil is wound. This method has low investment and remarkable effect. Through special parameters, the wrinkles and density of the outer ring of the slitting roll are greatly reduced, which is equivalent to forming a heat isolation layer on the outer ring of the aluminum foil roll, and can significantly reduce the generation of annealing heat drum.

The invention relates to a sub-rail bamboo and wood composite heightening railroad tie plate for a concrete sleeper and a manufacture method thereof, in particular to a sub-rail heightening railroad tie plate for a concrete sleeper and a manufacture method thereof, which solves the problems that the traditional heightening railroad tie plate can not simultaneously meet the requirements of planeness, rigidity, pressure resistance and wear resistance and the labor efficiency is low and the gluing amount is large in the manufacture process of the heightening railroad tie plate. The sub-rail bamboo and wood composite heightening railroad tie plate for a concrete sleeper comprises a core layer, an upper bamboo curtain surface layer and a lower bamboo curtain surface layer, wherein two sides ofthe core layer are respectively glued with the upper bamboo curtain surface layer and the lower bamboo curtain surface layer. The manufacture method of the heightening railroad tie plate comprises the following steps of: braiding bamboo woods on a braiding machine to form a bamboo curtain; gluing wooden materials, then assembling the wooden materials with the bamboo curtain, closing and ageing; and then hot forming a composite plate. The invention provides the heightening railroad tie plate with high planeness and rigidity as well as favorable pressure resistance and wear resistance. The adopted manufacture method improves the labor efficiency and saves the cost. The invention is used for regulating the horizontal height of the rail surface of a railroad, thereby ensuring the stable running of a train.