摘要:
A method for determining total chlorine amount present in a sample by mixing the sample with a benzidine indicator solution comprising a benzidine compound capable of forming a dye by a reaction with a chlorine, wherein the hue of the formed dye changes depending upon the mole ratio of the chlorine to benzidine compound and determining the total chlorine amount from the hue. A kit for practicing the method incudes the indicator and a color scale for the hues of the dye.
摘要:
The present invention provides a method of producing an optical element without the need for high vacuum, unlike the thin film deposition methods, and without using a molten salt. More specifically, the invention provides a method of producing an optical element comprising applying a paste containing at least one compound selected from lithium compounds, potassium compounds, rubidium compounds, cesium compounds, silver compounds, and thallium compounds, an organic resin, and an organic solvent to a glass substrate containing an alkali metal component as a glass component and then performing heat treatment at a temperature below the softening temperature of the glass substrate.
摘要:
The present invention provides a method for forming an optical waveguide characterized by applying a paste containing a copper compound to a glass substrate containing an alkali metal as a glass component over the whole surface thereof or in a patterned form, and performing heat treatment at a temperature lower than the softening temperature of the glass substrate.The method of the invention can produce an optical waveguide without the need for a high vacuum as in the thin film deposition method and without the use of a molten salt, and is capable of dispersing Cu+ ions selectively in a glass substrate with excellent controllability.
摘要:
In an injection stretch blow molding method, at least one injection molded preform is transferred from a preform molding section to a blow molding section by way of a transfer section and the at least one preform is blow molded into at least one container in the blow molding section. In the preform molding section the at least one preform is injection molded in an upright state with an open neck section thereof facing upward. In the transfer section, the at least one upright preform is turned upside-down and transferred to the blow molding section in an inverted state. Then, the blow molding section blow molds at least one container from the at least one inverted preform.
摘要:
An injection blow molding system includes an injection molding station 22, a first delivery section 24, a cooling station 26, a heating station 30, a second delivery section 32 and a plurality of blow molding stations 34. The injection molding station 22 is designed to simultaneously injection mold M rows of N preforms 36 arranged in a second direction B perpendicular to a first direction A in which the preforms 36 are carried. The first delivery section 24 is designed to remove the M rows of preforms 36 injection molded by the injection molding station 22 through a removing mechanism 102 in their upright state while decreasing the pitch in the rows. The preforms 36 are inverted with the column pitch being changed by an inverting mechanism 104 before they are delivered to the cooling station in their inverted state. The cooling and heating stations 26, 30 are designed to cool and heat one row of N preforms 36 while parallel carrying them along a first carrying chain 200. The second delivery section 32 is designed to deliver the preforms 36 to two blow molding stations while they are maintained in their inverted state. Each of the blow molding stations 34 is designed to stretch blow mold the N/2 preforms into containers at the same time.
摘要:
A blow molding apparatus for blow molding a preform into a container has a rectangular carrying path, carrier members each of which supports and carries the preform and container, an endless carrying member for circulatorily driving the carrier members along the path, a first transferring portion for transferring the preform supplied from outside of the apparatus to at least one of the carrying members, a heating section for heating the preform supported by the at least one carrying member, a blow molding section for blow molding the heated preform into the container, a second transferring portion for transferring the blow molded container outside of the apparatus, at least one guidable member disposed at each of the carrying members, and at least one guide member for guiding the at least one guidable member in each of the carrying members in order to transfer each of the carrying members along the rectangular carrying path. The heating section preferably has a plurality of first heaters on one side of the path, spaced apart in a vertical direction and extending in a preform carrying direction, a reflecting plate facing the first heaters across the path, and a plurality of second heaters extending in the preform carrying direction on both sides of the path, and positioned at such a height in the vertical direction that the second heaters face regions subject to blow molding in the vicinities of the neck portions of the preforms.
摘要:
An injection molding apparatus for a preform is disclosed, having an injection molding station (14) and a cooling and ejection station (16). In the injection molding station (14), neck cavity molds (60), injection core molds (50) and an injection cavity mold (42) are clamped and preforms (1) are injection molded. Thereafter, the injection cavity mold (42) is separated at a relatively high temperature. The preforms (1) are transferred to the cooling and ejection station (16) while being cooled by the injection core molds (50) and neck cavity molds (60). While the next preforms (1) are being injection molded in the injection molding station (14), in the cooling and ejection station (16) cooling of the preforms (1) continues. After cooling the preforms (1) to a temperature suitable for release, the injection core molds (50) are separated only through a stroke sufficient to allow a space to open between core pins (52) of the injection core molds 50 and the inner surface of the preforms (1). Thereafter the neck cavity molds (60) are separated and the preforms (1) are ejected. When the injection molding of the next preforms (1) in the injection molding station (14) is completed, a rotary wheel (30) is driven rotatingly in the opposite direction to the previous operation, and the injection core molds (50) and neck cavity molds (60) are interchanged between the two stations (14 and 16).
摘要:
An injection molding apparatus in which a hot-runner mold is moved with respect to the injection nozzle of an injection unit is disclosed. In a position in which the injection nozzle comes into contact is provided a first fixed link with a runner formed therein. A second fixed link with a runner formed therein is fixed to the hot-runner mold, and moves integrally with the hot-runner mold. Between these links is provided an intermediate runner block system, with runners formed therein. The intermediate runner block system is constructed from a first intermediate link supported rotatably by the first fixed link and a second intermediate link supported rotatably by the second fixed link, and these two intermediate links are also rotatably coupled together. This plurality of links forms a link construction, so that regardless of the movement of the hot-runner mold the resin path between the injection nozzle and the hot-runner mold is maintained.
摘要:
The method having a clamping cylinder which slidably fits a clamping ram whose front end is fixed on a movable board of an injection molding machine, etc., an inner space of the clamping cylinder divided into a rear chamber W and a front chamber X by a large-diameter piston section of the clamping ram, an inner rear wall of the clamping cylinder having a mold opening piston fixed thereto having a front end slidably fit in the clamping ram from the rear, an inner space of the clamping ram being divided into a chamber Y and a chamber Z opening to the atmosphere by the large-diameter piston section of the opening piston, a hydraulic controlling device which connects the chambers X, Y and Z to an oil pressure source and connects the chambers X and Y to the chamber W for a high-speed mold closure, which connects the chamber W to the oil pressure source and relieves the pressure in the chambers X and Y for a tight clamping, and which connects the chamber Y to the oil pressure source and connects the chamber W to both the chamber X and the oil tank for opening the mold, the effective pressure receiving area of the chamber Y being preferably designed to be equal to the cross-sectional area of the cylindrical section of the clamping ram.
摘要:
A mold clamping device is disclosed. The device includes a clamping ram, whose front end is connected to a moveable board of an injection molding machine, slidably fitted in a clamping cylinder, and a support cylinder provided in parallel to the clamping cylinder. A support piston is slidably positioned in the support cylinder, and the front end of the rod of the support piston is connected to the moveable board of the injection molding machine. A front chamber and a rear chamber of the clamping cylinder, divided by the piston section of the clamping ram, and a front chamber of the support cylinder are connected by an oil path. There is provided a valve for opening or closing the connection between the rear chamber of the clamping cylinder and the front chamber of the clamping cylinder and the front chamber of the support cylinder. The effective pressure receiving area of the rear chamber of the clamping cylinder is substantially equal to the sum of the effective pressure receiving area of the front chamber of the clamping cylinder and the front chamber of the support cylinder.