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7074359 |
Vibratory molding process and product
A fastener strip is disclosed having permanently sealed, airtight portion and a reclosable portion capable of maintaining an airtight seal when closed. The permanently sealed portion is generally...
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6949296 |
Polyimide substrates having enhanced flatness, isotropy and thermal dimensional stability, and methods and compositions relating thereto
The substrates of the present invention comprise a polyimide base polymer derived at least in part from non-rigid rod monomers together with optionally rigid rod monomers where the substrates are...
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6911174 |
Process of making multicomponent fiber incorporating thermoplastic and thermoset polymers
The present invention provides a multicomponent fiber containing at least two polymer components arranged in distinct zones or segments across the cross-section of the fiber wherein at least one...
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6808664 |
Method of forming an air laid fibrous web
Method for forming an air laid fibrous web, wherein an air born fiber stream is laid on a web shaped forming member, such as a wire, and the air laid fibrous web is bonded together. The air laid...
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6764637 |
Methods of joining polymers using ultrasonic energy
In a method of joining a solidifiable liquid polymeric material to a solid material to produce a solid article, the solid material is contacted with the liquid polymeric material at an interface....
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6743392 |
Production device and method for opened fiber bundle and prepreg production method
An apparatus and method for producing a spread fiber bundle using a fiber-spreading device composed of a group of rollers and a base body reciprocated to be repetitively brought into contact with...
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6660211 |
Methods of making biodegradable films having enhanced ductility and breathability
The present invention is directed to methods of making biodegradable films and biodegradable precursor films having enhanced breathability and ductility. The method includes blending a water...
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6652788 |
Quantitative continuous supplying method of columnar or square column-form pellets by action of ultrasonic waves
A quantitatively extrusion supplying method of continuously supplying synthetic resin fine particulate matters by the action of ultraviolet vibration, wherein the fine particulate matters are...
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6432347 |
Process of making a microfibrillated article
Microfibers and microfibrillated articles are prepared by imparting fluid energy to a surface of a highly oriented, highly crystalline, melt-processed polymeric film. The microfibers and...
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6419872 |
Method of manufacturing a part having a mechanically weakened area forming a hole or a hole precursor
A method of manufacturing a part having at least one mechanically weakened area includes a step of producing a thermoplastics material part and at least one cycle of steps entailing forming a...
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6416705 |
Method for devulcanization of cross-linked elastomers
A method and apparatus for devulcanizing cured or cross-linked elastomers. The method includes subdividing elastomeric raw material into small particle form, confining the particles of elastomer...
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6414089 |
Method of manufacturing polymer films having second order non-linear optical properties, polymer films, and non-linear optical element
A method of manufacturing a polymer film having second order non-linear optical properties which has excellent stability of orientated molecules and does not become disorientated, and a polymer...
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6398998 |
Method for producing bodies of consolidated particulate material
A method for producing shaped bodies of particulate material by introducing an easily flowable slurry of water and particulate material into a mold with perforated walls and by applying a...
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6368533 |
Process for forming films, fibers and base webs from thermoset polymers
A process for forming fibers, films and fibrous webs from thermoset polymers is disclosed. The process includes first forming an energy activatable prepolymer composition. The prepolymer...
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6241920 |
Electrically optimized hybrid "last mile" telecommunications cable system
A cable system is provided which can accommodate electrical and optical cabling. The conductors of the system employ a layer which is impedance-matched to space, decreasing their cross-section to...
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6159412 |
Method for manufacture of liquid crystalline polymer films
A method for making thermotropic liquid crystalline polymer films with improved transverse direction properties comprises two preferably embossed rollers which oscillate oppositely with respect to...
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6099670 |
Ultrasonic bonding method
A method of high speed bonding at least one material includes applying acoustic energy, using an acoustic horn and an anvil, to the material. The method also includes applying force to at least one...
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6095440 |
Method and apparatus for continuous devulcanization of rubber
An apparatus for devulcanizing vulcanized rubber or crosslinked polymeric material has an ultrasonic exposure portion including a body forming an exposure channel through which particles of the...
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5938874 |
Process of making microporous film
A microporous film can be made by adding a foaming agent to the components of a film material to create bubbles in the film. The microporous film can also be made by adding filaments to the...
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5911942 |
Method for spinning and processing collagen fiber
An apparatus for forming a collagen fiber having microparticulates coated on the surface of the fiber and the method for forming the fiber are disclosed.
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5879494 |
Method of aperturing thin sheet materials
A method of forming apertures generally greater than about 0.05 square millimeters in a thin sheet material. The thin sheet material includes a first side and a second side at least one side of the...
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5871605 |
Ultrasonic system and method
An ultrasonic method for intermittently changing a condition of a workpiece is disclosed. The ultrasonic system includes an ultrasonic horn and a rotating anvil roll positioned to form a close...
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5846475 |
Method for reducing shrinkage of extruded rubber
Method and apparatus for reducing a shrinkage amount of a rubber member (51) which is comprised of a rubber (3) extruded from an extruder (1). At least one vibrator unit (10a, 10b) applies...
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5827384 |
Process for bonding webs
An improved method for bonding webs. The method includes overlapping two webs, slitting the two webs, reoverlapping the two webs and bonding the two webs together. The steps of reoverlapping the...
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5817199 |
Methods and apparatus for a full width ultrasonic bonding device
This invention relates to apparatus and methods for fabricating a web or consolidating web precursor material in fabricating a web. The invention comprises ultrasonic bonding apparatus including an...
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5772948 |
Melt-blown fiber system with pivotal oscillating member and corresponding method
A melt-blowing system and corresponding method are provided for making a nonwoven polymer filament blanket. Subsequent to formation and blowing of the polymer filaments toward a receiving conveyor,...
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5733411 |
Ultrasonic system
An ultrasonic system for intermittently changing a condition of a workpiece is disclosed. The ultrasonic system includes an ultrasonic horn and a rotating anvil roll positioned to form a close...
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5707470 |
Rotary ultrasonic apparatus and methods
This invention pertains to methods for processing workpieces, including effecting changes in the workpieces by applying ultrasonic energy to the workpieces using novel apparatus and steps for...
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5667608 |
Rotary sealing system
This invention pertains to apparatus and methods for processing workpieces on a moving continuous web using ultrasonic energy. The ultrasonic system includes one or more sets, each set containing...
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5630982 |
Method and apparatus for extruding plastic tubing
A method and apparatus for extruding thermoplastic tubing of reduced eccentricity, in which tubing is extruded into a vacuum calibration box containing a cooling fluid and a sizing collar. An...
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5525286 |
Process for controlling the anisotropy of spunbonded webs
Process for controlling the anisotropy of the mechanical properties of spunbonded webs through variation of the frequency of vibration of impingement panels at web laydown.
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5393589 |
Apparatus and method for variably knurling edges of web and product produced thereby
Webs are provided with edge knurls whose effective height varies along the length of the web in a predetermined manner.
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5352393 |
Method of and apparatus for gaging and controlling circumference of extrusion-blown film
In a blown film extrusion system in which film is extruded as a tube from an annular die and then pulled along a predetermined path, an apparatus is provided for gauging and controlling the...
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5269981 |
Process for hydrosonically microaperturing
A method for forming microapertures in a thin sheet material where the area of each of the formed apertures generally ranges from about 10 square micrometers to 100,000 square micrometers. The...
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5258413 |
Continuous ultrasonic devulcanization of valcanized elastomers
This invention relates to a continuous ultrasonic method for breaking the carbon-sulfur (C--S), sulfur-sulfur (S--S), and if desired, carbon-carbon (C--C) bonds in a vulcanized elastomer. It is...
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5244607 |
Quenching and coagulation of filaments in an ultrasonic field
More uniform and more rapid quenching and coagulation of filaments is achieved by contacting the filaments in a chamber with coagulating liquid and generating pressure fluctuations in the liquid at...
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5225014 |
Process for producing precision cartridge filter
A precision cartridge filter having an average filter diameter of 10 μm or less is produced by preparing a web composed of conjugate microfine fibers by a conjugate melt-blowing process, wherein...
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5202066 |
Method of plasticizing molding material and apparatus therefor
Disclosed is a plasticization method in which a molding material is supplied to a cylinder having a built-in screw to plasticize the molding material, and further, at least one of the cylinder and...
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5202064 |
Method of extrusion molding and apparatus therefor
An extrusion molding method for improving the fluidity of a molding material in the die and significantly improving the productivity of the molded article of uniform thickness, and an extrusion...
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5139593 |
Process for manufacturing a ribbon constituted by at least one yarn impregnated with a thermoplastics polymer
This invention relates toa process for manufacturing a ribbon constituted by at least one yarn impregnated with a thermoplastics polymer, wherein the ribbon is obtained by controlled sheathing of...
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5114633 |
Method for the resin-impregnation of fibers
A process is disclosed wherein two co-reactive resin streams are mixed immediately adjacent the entrance of an impregnation die used to make products by the pultrusion process. The mixing occurs...
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5091036 |
Apparatus for pultruding thermoplastic structures at below melt temperatures
Apparatus for pultruding thermoplastic, resin-impregnated, fibrous substructures heats the substructures to a temperature just below the melting temperature of the resin. The heated substructures...
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5039462 |
Method and apparatus for producing biaxially oriented polymer sheet
This invention provides a process for producing biaxially oriented polymer sheet. This process includes the steps of introducing a polymer slab into a deformation zone defined between working...
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RE33063 |
Apparatus and method for ultrasonically joining sheets of thermoplastic materials
Apparatus for welding sheets (3a, 3b) of themoplastic material together along proximate edges including a supporting frame (25), a pair of joining rollers (11,13) mounted on the frame and forming a...
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4793954 |
Shear processing thermoplastics in the presence of ultrasonic vibration
Various processing advantages are gained when ultrasonic vibration is applied to a thermoplastic processing apparatus such as an extruder or an injection molding device. Such advantages include...
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4611392 |
Method of manufacturing relays
A method of assembling electromagnetic relays by securing and aligning the magnetic pole pieces in the base of the relay through the use of ultrasonic reformation of the base material.
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4610830 |
Process for continuous production of a fibrous, bonded material directly from a polymeric solution
A process for continuous production of fibrous, bonded material directly from a polymeric solution, primarily characterized by the polymeric solution being fed through a flow duct in which the...
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4430148 |
Ultrasonic bonding apparatus
An improved ultrasonic bonding apparatus for pattern bonding juxtaposed laminae with a pattern of discrete bonds defined by a multiplicity of discrete pattern protuberances disposed on an anvil as...
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4426244 |
Cooling device for ultrasonic horns
A device for improved cooling of ultrasonic horns preferably includes a pair of manifold units which direct a stream of cooling fluid (e.g. air) so as to impinge upon both sides of ultrasonic...
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4414045 |
High speed ultrasonic bonding
A method and apparatus provide the production of a non-woven fabric from a batt of random, loose, ultrasonically fusible fibers at high speed (e.g. greater than 50 meters/minute). A plurality of...
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