摘要:
053825006 A plastic molding unsealing apparatus includes: a first chemical liquid feeding device to take out each desired chemical liquid with a desired amount from chemical liquid bottles of at least two kinds; a liquid receiving container to temporarily receive the chemical liquid taken out by the first chemical liquid feeding device; a second chemical liquid feeding device to take out the chemical liquid from the liquid receiving container with predetermined amount; a heating device to heat the chemical liquid taken out by the second chemical liquid feeding device; and a chemical liquid injecting section to inject the chemical liquid heated by the heating device onto a sample which has been sealed to be molded with plastic. In the construction, a plastic portion of the sample is dissolved and unsealed to be unsealed, and the chemical liquid injecting section recovers drain liquid of the heated chemical liquid.
摘要:
A thermoplastic resin composition comprising 10 to 60 parts by weight off a maleimide series graft copolymer (A) and 90 to 40 parts by weight of a hard polymer (B) described below:(A) a maleimide series graft series copolymer obtained by emulsion graft copolymerization of a specific monomer mixture to a crosslinked latex containing an ethylene-propylene-non-conjugated diene copolymer and(B) a hard polymer containing a mixture of specific monomers.A process for producing a maleimide series graft copolymer, in which a monomer mixture and a redox type initiator are added to the polymerization system for more than one hour and the pH value of the aqueous polymerization phase is kept at 10.0-7.0.
摘要:
A working gondola which carries a worker for cleaning e.g. glass windows of a building structure, has two powered winches for winding and unwinding two ropes respectively for up-, down-, left-, and rightward movement of its gondola, whereby cleaning of an extended area can be conducted with efficiency.
摘要:
A plurality of thermal heads each having a resistance heating element array are provided for a single platen roller. The individual thermal heads are arranged away from one another in the axial direction of the platen roller in such a way that regions in which images are recorded by their respective heating element arrays overlap each other at the joint portion of said regions. The thermal heads are also spaced away from one another in the circumferential direction of the platen roller so as to avoid mutual interference. The above arrangement makes it possible to use only a single platen roller for a recording apparatus which performs recording in a large recording area, thus contributing to making the apparatus compact.
摘要:
A corrosion-preventing structure for protecting reinforcing bars in reinforced concrete from corrosion. This corrosion-preventing structure comprises an adhesive layer, a swelling agent layer with a water-absorbing polymer blended therein, and a protective cover layer which layers are successively formed onto the surface of the reinforced concrete to be protected from corrosion.
摘要:
A thermoplastic resin composition comprising 10 to 60 parts of a graft copolymer (A) and 90 to 40 parts of a rigid copolymer (B), both defined below:(A) The graft copolymer obtained by emulsion graft polymerizing 60 to 20 parts of a specific monomer mixture in the presence of 40 to 80 parts (as solids) of an ethylene-propylene-non-conjugated diene copolymer-containing cross-linked latex containing 0.1 to 20 parts of a modified low molecular weight .alpha.-olefin copolymer in 100 parts of an ethylene-propylene-non-conjugated diene copolymer.(B) The rigid copolymer containing 60 to 76% of an aromatic vinyl type monomer, 40 to 24% of a vinyl cyanide type monomer, and 0 to 30% of a monomer copolymerizable with these monomers.In the production of the graft copolymer (A), a redox type initiator and a monomer mixture are added to the polymerization system continuously over a period of one hour.
摘要:
A foaming agent is mixed to a thermoplastic resin composition containing a graft copolymer obtained by emulsion graft polymerization of a vinyl monomer to an ethylene-propylene-non-conjugated diene copolymer rubber latex comprising from 0.1 to 30 parts by weight of a modified low molecular weight .alpha.-olefin copolymer uniformly dispersion in 100 parts by weight of an ethylene-propylene-non-conjugated diene copolymer.
摘要:
The plastic mold decapsuling apparatus comprises an etchant bottle; a heat tank; an etchant reservoir disposed in the heat tank; at least one decapsuling plastic mold holder; a first etchant feeding pump for selectively circulating the etchant from the etchant bottle to the etchant reservoir and discharging waste etchant; and a second etchant feeding pump for feeding the etchant from the reservoir to the plastic mold holder. Since the etchant bottle can be set as it is without transferring the etchant into another vessel, the etchant handling work is safe. Since a required amount of etchant can previously be heated in a reservoir within the heat tank, it is possible to continuously supply a predetermined amount of etchant heated to a constant temperature, thus improving the speed of decapsuling work. Futher, since the etchant is circulated through the decapsuling plastic mold holder, it is possible to firmly decapsule plastic mold devices by use of a relatively mild etchant such as fuming nitric acid.
摘要:
This invention relates to azimuth adjustment apparatus for a magnetic head and, more particularly, to azimuth adjustment apparatus for a reproducing head. The azimuth adjustment apparatus for a magnetic head comprises an azimuth adjuster including a control motor to adjust an azimuth of a magnetic head and manual azimuth instruction apparatus including at least one manually variable resistor for generating an azimuth control signal connected to control the motor to vary the azimuth position of the magnetic head in accordance with the resistance value of the manually variable resistor. In case the azimuth adjustment apparatus for the magnetic head is applied to an automatically reversible tape recorder, the manual azimuth instruction apparatus includes forward and reverse variable resistors to be selected in accordance with the direction in which a magnetic tape runs.
摘要:
Sealing means for a reverse osmosis system includes an approximately cylindrical body (103) open at one end and including an outwardly stepped portion (109) at its open end which receives a cylindrical rim (121) of a cover (107). An O-ring seal (123) is seated in an annular groove (125) of the cylindrical rim and includes an outwardly projecting annular tongue (123B) which engages and seals against the inner surface of the stepped portion (109) of the cylindrical body (103). Annular filter element (105) is positioned in an upright attitude in the cylindrical body (103) and fluid moves through inlet opening (31) of the cover (107), then downwardly into the outer portion of the cylindrical body, then through the annular filter, then upwardly through the cover to an outlet (135). The liquid then moves through the other elements of the reverse osmosis system, including a boiler (29) and condenser (33), to storage tank (35).