US PATENT SUBCLASS 19 / 296
.~ Web forming

Current as of: June, 1999
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19 /   HD   TEXTILES: FIBER PREPARATION

144  DF  ASSEMBLING {7}
296.~ Web forming {8}
297  DF  .~.~> With fiber sampling
298  DF  .~.~> With split lap preventing
299  DF  .~.~> Including continuous filaments
300  DF  .~.~> Control means responsive to sensed condition or program
301  DF  .~.~> Irregular, nonuniform, or patterned receiving surface
302  DF  .~.~> Stratified or multilayer
303  DF  .~.~> With divided fiber stream or separate handling of trash or fugitive fiber
304  DF  .~.~> Fluid propelled to condenser {2}

DEFINITION

Classification: 19/296

Web forming:

(under subclass 144) Method or apparatus for forming a flat nonwoven batt, mat, or strip of fibers or filaments, the configuration of which is retained solely by interfiber or interfilament friction.

(1) Note. This and the indented subclasses constitute the repository for subcombinations concerned with the formation of a nonwoven web from fibers or filaments. Excluded from this and the indented subclasses are the following:

web formation from bulk deposition of particulate material other than fibers or filaments;

web formation from bulk deposition of fibers from a liquid suspension or slurry;

web formation from bulk deposition of fibers or filaments combined with either:(1) formation of the fibers or filaments from liquid or molten material; or (2) bonding or uniting of the constituents of the web; or (3) mechanical manipulation of the web to rearrange the constituents thereof.

(2) Note. For proper inclusion in this and the indented subclasses, the disclosure must be limited to web formation or bulk deposition of fibers or filament. A disclosure of general utility or applicability to fiber or filaments and other particulate material as powders, flakes, granules, and the like excludes placement herein.

(3) Note. Comminuted wood, i.e., lignocellulose, as prepared by an attrition mill or defiberizer in the form of chips, flakes, shavings, wafers, or "wood fibers" for the manufacture of composition panels, fiberboard, wallboard, and the like are not construed as textile "fibers" proper for this and the indented subclasses even though such material may be referred to as "fibrous".

SEE OR SEARCH THIS CLASS, SUBCLASS: .51, and .56, for combined fibrous web forming and significantly claimed filament staplizing operations.

80+, for combined fibrous web forming and picking, i.e., fiber liberation or separation and cleaning.

98+, for formation of a fibrous nonwoven web by a carding

operation.

160, for formation of a fibrous nonwoven web by deposition of a sliver to-and-fro transversely of a moving or travelling, collecting or receiving surface.

163, for formation of a fibrous nonwoven web by deposition of a nonwoven web to-and-fro transversely of a moving or traveling, collecting or receiving surface.

SEE OR SEARCH CLASS

28, Textiles: Manufacturing,

103+, for mechanical manipulation as by felting, fulling, needling, or the like of a nonwoven article or structure of fibers or filaments to rearrange and retain the constituents thereof into altered positions by interfiber or interfilament friction, inclusive of initial formation of the nonwoven web.

65, Glass Manufacturing,

443+, for batt-forming means combined with means to form a glass filament or fiber.

156, Adhesive Bonding and Miscellaneous Chemical Manufacture, 62.2+, for processes including the formation of a lamina by assembling individually distinct fibers from a fluent mass, adhesively bonding the fibers to each other, and then uniting the lamina thus formed to itself or another lamina; and subclasses 166+ and 433+ for processes and apparatus, respectively, for bonding or uniting of flexible filamentary material while in indefinite or running length form.

162, Paper Making and Fiber Liberation,

100+, for processes of forming a fibrous web by deposition from liquid suspension; and subclasses 232+ for apparatus for producing water or liquid laid fibrous webs.

209, Classifying, Separating, and Assorting Solids, appropriate subclasses for processes and apparatus for separating solid materials, inclusive of fibers, and assorting or segregating them in grades or classes according to physical characteristics.

242, Winding, Tensioning, or Guiding,

520+, for processes and apparatus for the winding of self-sustaining masses of entangled fibers, which masses have substantial width with respect to their thicknesses and are of indefinite length.

264, Plastic and Nonmetallic Article Shaping of Treating:

Processes,

5+, for forming fibers from a liquid or molten mass, other than glass, and bulk assembly thereof; subclass 437 for application of electrical or wave energy to fibers for effecting deposition or orientation thereof combined with an operation of this class (264); subclasses 517+ vacuum deposition, collection, or assembly of fibers combined with an operation of this class (264) or for the vacuum deposition of particulate material not provided for elsewhere; subclasses 109+ for the formation of a nonwoven web by uniting discrete bulk assembled fibers without the direct application of fluid pressure; subclass 143 for the formation of continuous, running, or indefinite length filaments, cutting or severing the filaments into staple fibers and deposition collection or a assembly thereof into web form; and subclasses 165+ for the formation of continuous or indefinite filaments and deposition, collection, or assembly thereof into web form when not combined with a cutting step.

419, Powder Metallurgy Processes,

1+, for processes for forming articles by powder metallurgy with heating or sintering wherein the powder particles may be fibrous or filamental in form; and subclasses 61+ for similar processes.

425, Plastic Article or Earthenware Shaping or Treating: Apparatus, 6+, for apparatus to divide or comminute liquid material, other than glass, to form discrete fibers and bulk assembly thereof; subclass 66 for continuous filament forming with stretching means, including deposition thereof in web form; subclasses 80.1+ for the deposition of fibers or other particulate material on a shaping surface from a gaseous suspension when not provided for elsewhere or when such deposition is combined with apparatus for performing an operation of this class (425); and subclass 224 for means to cast or deposit filaments of indefinite length on a forming surface to form an indefinite length web.