Abstract: A method for producing a paper container and a paper container for liquid. A method for producing a paper container for liquid according to an aspect includes a bonding step of bonding a first surface of a substrate and a vapor deposition surface of a barrier laminate film layer via a first adhesive resin layer without applying a corona treatment to the vapor deposition surface of the barrier laminate film layer, a lamination step of laminating at least a second adhesive resin layer on a surface of the barrier laminate film layer on a side opposite to the vapor deposition surface, and a forming step of forming a laminate into a box shape after the bonding step and the lamination step, the laminate including at least the substrate, the first adhesive resin layer, the barrier laminate film layer, and the second adhesive resin layer.

Abstract: A method of production of a rubbery polymer by adding a coagulating agent to a polymer latex to make the rubbery polymer ingredient coagulate, the method of production of a rubbery polymer having a step of using a crusher pump to make the rubbery polymer ingredient coagulate to obtain a crumb slurry, using as the crusher pump a pump having a head of 10 m or more. According to this invention, in a method of production of a rubbery polymer by adding a coagulating agent to a polymer latex to make the rubbery polymer ingredient coagulate, an improvement of the operation efficiency and a reduction of the production process and production equipment are made possible and a reduction of the equipment costs and a reduction of the production costs can be achieved.

Abstract: A silica-containing rubber composition produced by filtering slurry of silica-containing rubber crumbs obtained by co-coagulating a mixture of rubber latex and silica to give a moisture content of 80 wt % or less, dehydrating by a dehydrator having a compression function, then, drying. According to the present invention, a silica-containing rubber composition with improved silica dispersibility can be provided.

Abstract: A water-absorbing polymer having a desirably controlled moisture content with a reduced variability from lot to lot and suitable for a shaped article having good characteristics is obtained by bringing a finely divided particle of water-absorbing polymer into contact with a stream of air having a moisture content of 2-20 g/m3 so that the moisture content in the polymer particle is increased by 300 ppm by weight or more to a moisture content of 300-50,000 ppm by weight. This moisture content-controlling treatment is carried out using a closed vessel wherein the air is fed, or using a pneumatic transportation apparatus wherein the air is fed, and the transportation and moisture content-control of polymer particle are conducted simultaneously.