William E. Bessey - Charlotte NC Joseph S. W. Haas - Charlotte NC Gerald Peter Rumierz - Tega Cay SC Clinton Dale Felton - Charlotte NC
Assignee:
North Carolina State University - Raleigh NC
International Classification:
B32B 300
US Classification:
428166, 428167, 428169, 428174
Abstract:
A rigid three-dimensionally shaped fiber network structure having improved post-yield dimensional recovery is provided. The fiber network structure is formed from a fabric containing (A) at least one oriented, semi-crystalline monofilament yarn made from a first thermoplastic polymer, and (B) a second thermoplastic polymer which effects bonding of the monofilament cross-over points. The fiber network structures are useful in a variety of articles, including sandwich panels, various spacers, drainage systems, and energy absorption structures.
Process For Fibrous Structure Containing Immobilized Particulate Matter
Herbert Gunter Groeger - Charlotte NC George Allibone Serad - Charlotte NC Clinton Dale Felton - Charlotte NC
Assignee:
AQF Technologies LLC - Charlotte NC
International Classification:
B32B 3126
US Classification:
156 628
Abstract:
Fibrous structures containing immobilized particulate matter and processes for making them are disclosed. These structures may be used for filters and for fabrics including chemical defense garments and others. The fibrous structures have webs containing composite fibers having a lower melting component and a higher melting component. The particles are distributed into the interior of the web and fused to the low melting component of the individual fibers without substantially reducing the available surface area of the particle. A fibrous structure of a composite staple having a nylon sheath and a polyester core, with activated carbon particles bonded to the sheath is specifically disclosed. The processes for producing such a fibrous structure include carding a web of staple fibers and distributing particulate matter therein, air laying a web of staple fibers and particulate from a suspension thereof between two wet formed layers of staple fibers. One or more additional layers of nonwoven, woven, or knit webs or fabrics may be bonded thereto.
Clinton D. Felton - Charlotte NC Baylor D. Gibson - Waxhaw NC Charles E. Jamison - Charlotte NC William O. McWhorter - Monroe NC George A. Serad - Charlotte NC
Assignee:
Celanese Corporation - New York NY
International Classification:
C07C 324
US Classification:
204168
Abstract:
Continuous processes for the preparation of electrets and the products produced thereby, including filter fabrics, are disclosed. The process employs a continuous film or continuous filaments in the form of a tightly packed warp having a warp density as determined by light transmission of not more than 40%. The continuous film or continuous filament in the form of a tightly packed warp are continuously fed one or more times through a corona charging station having electrodes disposed on both sides of the material being treated, the material being treated being simultaneously heated while being subjected to a corona discharge of from 6 KV to 20 KV direct current.
Werner Groh - Lich, DE Hans-Tobias Macholdt - Darmstadt-Eberstadt, DE Baylor D. Gibson - Weddington NC James R. Walden - Matthews NC Clinton D. Felton - Charlotte NC
Assignee:
Hoechst Celanese Corporation - Somerville NJ
International Classification:
G11C 1302
US Classification:
252 6254
Abstract:
The use of additives to produce polymer electrets with improved charge stability. In particular, the invention relates to the use of specific charge control agents used for toners that are blended with various polymers at suitable concentrations to enhance the charge lifetime of the electrets. The charge control agents include a triphenylmethane compound, a polymeric ammonium compound, and arylsulfide compound and azochromium complex.
Dai W. Kim - Chatham NJ Gerald Peter Rumierz - Tega Cay SC Clinton Dale Felton - Charlotte NC
Assignee:
Hoechst Celanese Corporation - Warren NJ
International Classification:
B32B 100
US Classification:
428175
Abstract:
Laminated fiber network structures having high resilience, good cushioning properties, and excellent impact-resistance include at least one layer of a three-dimensional fiber network material and a second layer, which may be a planar material (e. g. a fabric, film, or sheet) or a second layer of a three-dimensional fiber network material. The surfaces of the two layers face each other and are bonded together at their points of contact. The three-dimensional fiber network material is a fabric made from thermoplastic filaments that are at least 0. 1 mm in diameter, where the fabric has an array of projections and optional depressions pushed out of one or both sides of the fabric.
On-Line Consolidation Of Filament Wound Thermoplastic Parts
Baylor D. Gibson - Waxhaw NC Clinton D. Felton - Charlotte NC
International Classification:
B31C 100 B65H 8100
US Classification:
156169
Abstract:
A filament winding process for a melt-processable, thermoplastic matrix material, and a reinforcing fiber. The process is heat and pressure intensive. An on-line consolidation is provided.
Clinton D. Felton - Charlotte NC Baylor D. Gibson - Waxhaw NC Charles E. Jamison - Charlotte NC William O. McWhorter - Monroe NC George A. Serad - Charlotte NC
Assignee:
Celanese Corporation - New York NY
International Classification:
C07C 324
US Classification:
204168
Abstract:
Continuous processes for the preparation of electrets and the products produced thereby, including filter fabrics, are disclosed. The process employs a continuous film or continuous filaments in the form of a tightly packed warp having a warp density as determined by light transmission of not more than 40%. The continuous film or continuous filament in the form of a tightly packed warp are continuously fed one or more times through a corona charging station having electrodes disposed on both sides of the material being treated, the material being treated being simultaneously heated while being subjected to a corona discharge of from 6 KV to 20 KV direct current.
Fibrous Structures Containing Particulate And Including Microfiber Web
H. Gunter Groeger - Charlotte NC George A. Serad - Charlotte NC Clinton D. Felton - Charlotte NC
Assignee:
Hoechst Celanese Corporation - Somerville NJ
International Classification:
B32B 516 B32B 506 D02G 300
US Classification:
442347
Abstract:
A fibrous structure comprising a composite fiber matrix loaded with immobilized functional particulate and including void spaces forming tortuous flow paths, is provided. The particulate is beneficially distributed in the interior of the fibrous structure in three dimensions and fused to a low melting component of the composite fibers without substantially reducing the available surface area of the particulate. A filtration structure of a composite staple having a nylon sheath and a polyester core, with activated carbon particles bonded to the fiber matrix, and including a microfiber web located within the structure, is specifically disclosed.
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