摘要:
A process for producing a porous resin film containing a polyolefin resin as a main component, comprising meltinig a mixture of (A) 100 parts by weight of a polyolefin resin, (B) 0 to 50 parts by weight of a polyester-polyether type thermoplastic elastomer, and (C) a thermoplastic polyester resin having an instrinsic viscosity of not more than 0.5, the amount of the component (C) being from 25 to 90 part by weight per 100 parts of the total amount of the component (A) and the component (B), by heating the mixture at a temperature of not less than the melting temperature of the component (C); kneading the mixture at a shear rate of not less than 200/sec. while cooling the mixture to a temperature of not more than the crystallization temperature of the component (C) and not less than the melting temperature of the component (A); subjecting the mixture to film-forming at a temperature of less than the melting temperature of the component (C) and not less than the melting temperature of the component (A) and cooling the resultant rapidly to obtain a non-stretched film; and stretching the non-stretched film in at least one direction. The porous film obtained by the process has an excellent water proof and an excellent water vapor permeability.
摘要:
This invention relates to a tubular stretching method for producing a stretched film by passing a tubular thermoplastic resin film between pairs of nip rolls having mutually different peripheral speeds and by inflating the tubular film with internal pressure under heating and a stretching apparatus to be employed therefor. The pairs of nip rolls include at least three pairs of nip rolls. Pressurized air is admitted into a stretched bubble situated between the first and second rolls through a slit-like air injecting nozzle, and the bubble formed by the supplied pressurized air is inflated and stretched under heating. In this stage, if desired, the amount of injected pressurized air is controlled by manual or automatic control by detecting the diameter of the bubble so as to keep the bubble's diameter constant. After stretching, the tubular film is collapsed and is introduced to the second nip rolls. Both side ends of the collapsed film are cut open with film cutting knives to make two sheets of flat films. Then, the flat films are introduced to left and right guide rolls so as to avoid interference with the slit-like injecting nozzle and the cutting knives. Finally, the films are drawn with third nip rolls. In the apparatus of the present invention, the diameter and internal pressure of the bubble can be controlled with manual or automatic control even during tubular stretching, and particularly, the apparatus can be suitable applied to tubular stretching of porous films.
摘要:
An antistatic resin composition prepared by dissolving at least one of lithium nitrate and lithium chloride in cold or hot water, adding a molten surface active agent thereto, mixing them together to give a homogeneous mixture, and blending the same with a molten thermoplastic resin either before or after cooling and solidification. The composition is highly antistatic and gives a film having a high degree of transparency.
摘要:
It is an object of the present invention to provide a web page uploading system which enables easy editing and uploading of a web page without specifying an upload area to which the web page is to be uploaded each time the web page is to be uploaded. When web editing software is launched while a web page is being browsed a client computer obtains data regarding an area in a web server where the web page is stored and the web page. When the web page edited by the web editing software is to be uploaded by the client computer, the client computer uploads the web page to the registered area in the web servers.
摘要:
An electronic throttle valve control system prevents rapid rotation of a throttle valve reliably when the control system has a failure. A throttle valve controls the amount of intake air to an internal combustion engine, an electric motor drives the throttle valve, and a rotational speed reduction mechanism reduces the rotation of the electric motor to control the rotation of the throttle valve. An urging mechanism urges the throttle valve in the closing direction. An attenuation mechanism attenuates the speed at which the throttle valve is rotated in the closing direction by the urging mechanism when the control system has a failure. The attenuation mechanism is the electric motor in a regenerative mode or an air damper.
摘要:
The present invention relates to a log-in method for a client server system which enables a client computer to log in to a server accessible via either the Internet or a LAN with high security and operability. When a server 101 receives a connection request from a client computer 102, the server 101 obtains an IP address of the client computer 102 and judges based on the IP address a network to which the client computer 102 is connected. When the server 101 judges that the client computer 102 is a client computer 102c connected to the Internet 105, the server 101 causes the client computer 102 to display a first log-in screen. On the other hand, when the server 101 judges that the client computer 102 is a client computer 102a or 102b connected to the LAN 102, the server 101 causes the client computer 102 to display a second log-in screen which can be more easily operated than the first log-in screen.
摘要:
The present invention relates to a web page uploading method in which whether or not a web page is suitable for being made public can be checked without imposing a burden on an administrator and a web server. When a client computer in which a software for editing and uploading a web page is installed is instructed to upload the web page (S401), the client computer checks whether or not predetermined bad words are contained in the web page prior to uploading the web page to the web server (S402 to S406). Then, the web page subjected to the checking operation in this manner is uploaded (S409) and the data file representing the result of the checking operation is uploaded (S410), thereby completing the uploading of the web page.
摘要:
An electronic throttle valve control system prevents rapid rotation of a throttle valve when the control system has a failure. A throttle valve controls the amount of intake air to an internal combustion engine, an electric motor drives the throttle valve, and a control section controls the electric motor. The throttle valve has an urging mechanism for urging the throttle valve in the closing direction. The control section shifts the electric motor to a regenerative mode when the control system has a failure to control the speed at which the throttle valve is rotated in the closing direction by the urging force of the urging mechanism. The throttle valve is therefore rotated slowly in the closing direction by the urging force of the urging mechanism and then held in a predetermined opening position.
摘要:
[Problem] To provide an electronic throttle valve control system which can prevent rapid rotation of a throttle valve when the control system has a failure. [Solution] There are provided a throttle valve 10 for controlling the amount of intake air to an internal combustion engine, an electric motor 20 for driving the throttle valve 10, and a control section 21 for controlling the electric motor 20. The throttle valve has an urging mechanism 31 for urging the throttle valve 10 in the closing direction. The control section 21 shifts the electric motor 20 to a regenerative mode when the control system has a failure to control the speed at which the throttle valve 10 is rotated in the closing direction by the urging force of the urging mechanism 30. The throttle valve 10 is therefore rotated slowly in the closing direction by the urging force of the urging mechanism 30 and then held in a predetermined opening position 10b.
摘要:
[Problem] To provide an electronic throttle valve control system which can prevent rapid rotation of a throttle valve reliably when the control system has a failure.[Solution] A throttle valve 10 for controlling the amount of intake air to an internal combustion engine, an electric motor 20 for driving the throttle valve 10, and a rotational speed reduction mechanism 30 for reducing the rotation of the electric motor 20 to control the rotation of the throttle valve 10 are provided. The rotational speed reduction mechanism 30 has an urging mechanism 31 for urging the throttle valve 10 in the closing direction. The rotational speed reduction mechanism 30 is connected to an attenuation mechanism 38(20) for attenuating the speed at which the throttle valve 10 is rotated in the closing direction by the urging force of the urging mechanism 31 when the control system has a failure. The attenuation mechanism 38 is constituted of the electric motor 20 in a regenerative mode or an air damper.