Home | Links | Contact Us | More About Intellectual Property | Bookmark
Search patents:
Home Optical Systems Heat-bonding-method

 Achromatic optical system including diffractive optical element
OF A PREFERRED EMBODIMENT The present invention now will be described more fully hereinafter with ...


 Color reproducing method and apparatus for converting a color space data into another color space data
An object of the present invention is to provide a color reproducing method and apparatus capable ...


 Image transfer sheet and image forming method using the image transfer sheet
Accordingly, an object of the present invention is to provide an image transfer street which is ...


 Method and apparatus for color conversion
In order to accomplish above purpose, the present invention provides a method and apparatus for ...


 Holographic system for the storage of audio, video and computer data
An object of this invention is to provide a holographic apparatus which is capable of serving ...


 Printed circuit board
What is claimed is: 1. A printed circuit board comprising a non-conductive substrate and at least ...


 Optical storage media with discontinuous thin metallic films
In accordance with this invention an optical storage medium for storing binary data by printing ...


 Method of manufacturing high efficiency, broad bandwidth, volume holographic elements and solar concentrators for use therewith
FIG. 1 is a pictorial, schematic representation of the technique of this invention for ...


 Polymer dispersed liquid crystal panel with diffraction grating
An object of this invention is to provide a liquid crystal panel capable of realizing high ...


 Three-dimensional image display device
This invention is made in view of such circumstances. It is an object of the present invention to ...


 Heat-bonding method

Details
Inventors: Burgheimer, Joanne;
Assignee: The Dimension Weld International Corporation (Stamford, CT)
Primary Examiner: Drummond; Douglas J.
Assistant Examiner: Wityshyn; M. G.
Attorney, Agent or Firm: Striker; Michael S.

Thermoplastic materials, such as polyvinylchoride, cannot normally be heat bonded to certain higher-melting synthetic fabrics, such as nylon or the like, which are of the densely woven type and are also frequently treated with silicone or analogous substances to make them water repellant and/or windproof. The present method overcomes this problem by heat-bonding such materials under pressure and the application of a dielectric field, and by causing sufficient dielectric resistance to be present at the synthetic fabric so that the dielectric field is able to heat the synthetic fabric to a temperature at which it becomes sufficiently flowable to bond with the thermoplastic material.

DETAILED DESCRIPTION What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims: 1.
A method of heat-bonding a layer of thermoplastic material onto a densely woven synthetic fabric which has a higher melting point than said thermoplastic material and is impenetrable to the latter even when said thermoplastic material is in flowable state, comprising the steps of forming an assembly from a layer of thermoplastic material and a juxtaposed densely woven synthetic fabric having a surface facing the thermoplastic material and another surface facing away therefrom, said fabric also having a higher melting point than said thermoplastic material and interstices which are impenetrable to said thermoplastic material even when the latter is in flowable state; subjecting said assembly to pressure in bonding zones in which said layer is to be bonded to said fabric; subjecting said assembly to a dielectric field so as to apply in said zones sufficient heat to said assembly to render said thermoplastic material flowable; and establishing adjacent said other surface of said synthetic fabric a dielectric resistance greater than the dielectric resistance of said synthetic fabric so as to cause heating of said synthetic fabric to an extent adequate to render the same sufficiently flowable in said zones to bond with said thermoplastic material.
2.
A method as defined in claim 1, wherein the step of subjecting comprises pressing said assembly between an electrode and a counter electrode so that said layer is engaged by the latter, and further comprising the step of preheating said counter electrode to a temperature lower than that of said heat which renders said thermoplastic material flowable.
3.
A method as defined in claim 1, wherein the step of establishing said dielectric resistance comprises placing adjacent said synthetic fabric a material having a dielectric resistance greater than the dielectric resistance of said fabric.
4.
A method as defined in claim 1, wherein the step of subjecting comprises pressing said assembly between an electrode and a counter electrode so that said synthetic fabric is adjacent to the former; and wherein the step of establishing comprises interposing between said electrode and said synthetic fabric a material having a dielectric resistance greater than the dielectric resistance to said synthetic fabric


Related patents
  Process for selective transfer of metallic foils to xerographic images
A method is provided for forming imamges overlaid with metallic foil. According to the method of the present invention, a sheet comprising xerographic images is provided ...
  Composite for reinforcing bituminous roofing membranes including a lightweight grid of over-under construction
What is claimed is: 1. A puncture resisting and processability improving composite for reinforcing bituminous roofing membranes that are free of organic mats, the ...
  Diffractive beam homogenizer having free-form fringes
The invention is a beam homogenizer for converting an incident beam having a non-uniform spatial energy distribution into an output beam of preselected spatial energy ...
  Fabrication of sandwiched construction media
The invention is directed towards holographic data storage media, holographic data storage systems, and methods for making holographic data storage media. The ...
  Hologram recording sheet, holographic optical element using said sheet, and its production process
An object of the invention is to provide a hologram recording sheet which enables an image of good quality to be obtained and, at the same time, hologram recording to be ...
  Process for holography involving tilt compensation
The invention provides a process and apparatus for holography in which aberrations introduced by storage media, particularly photopolymer-type media, are substantially ...
  Optical scanning apparatus
It is therefore an object of the present invention to provide a relatively inexpensive optical scanning apparatus which can substitute for the conventional optical ...
  Programmable optical interconnect system
This is an optical interconnect system. The system comprises: at least one signal transmitter; at least two signal receivers; at least one DMD in the same plane as the ...
  Method of reading hologram information
In view of the above-described circumstances, it is an object of the present invention to provide a hologram information reading method wherein when a hologram is ...
  Vacuum diaphragm device
OF THE PREFERRED EMBODIMENTS Referring now to the drawing wherein like numerals of reference represent like elements through-out, a bonding apparatus depicted generally ...

0.014

Archive: All patents - Links

Copyright (c)2006 Eipa-patents.org - All rights reserved