Patent US3844097A successfully refreshed from Google Patents.
US3844097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite spinning
Assignee: Individual
•
Filing: 1971-11-29
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Granted: 1974-10-29
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Expires: 1991-11-29
Abstract
Abstract There is provided an apparatus for the manufacture of composite spun yarn in which a polymer substrate is supplied through a die and nozzle arrangement in the form of a tubulus, spray or bubble downwardly towards the nip of a pair of rotatable consolidating rollers positioned face to face. Fibrous material is also supplied onto said rollers by means of suitable aerodynamic licker-in or drafting devices. The polymer substrate and the fibrous material are then transformed in contact with each other into spun yarn by an arrangement including a twisting spindle, and the so obtained yarn is continuously wound on a suitable winding device. All these elements may be constructed very tightly and closely to one another and form a compact and fully integrated unit.
Inventors
- 👤 A Bobkowicz
- 👤 E Bobkowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:07
CPC Classifications
D; D01; D01H; D01H4/00; D02; D02G; D02G3/00; D02G3/22; D02G3/40; D02G3/408
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
122 words
Apparatus for the manufacture of composite spun yarn comprising a pair of rotatable rollers in face to face relation thereby providing a nip therebetween and comprising means for supplying a polymer substrate downwardly into the nip of the pair of rotatable rollers, means for rotating said rollers against each other, means for continuously supplying fibrous material at least onto one of said rollers, and means for transforming the polymer substrate and the fibrous material in contact with each other into spun yarn, characterized in that said means for supplying the polymer substrate comprise at least one die and nozzle arrangement adapted to project the polymer substrate towards the nip of said rotatable rollers in the form of a tubulus, spray or bubble.
Claim 2
Dependent Claim
122 words
Apparatus for the manufacture of composite spun yarn comprising a pair of rotatable rollers in face to face relation thereby providing a nip therebetween and comprising means for supplying a polymer substrate downwardly into the nip of the pair of rotatable rollers, means for rotating said rollers against each other, means for continuously supplying fibrous material at least onto one of said rollers, and means for transforming the polymer substrate and the fibrous material in contact with each other into spun yarn, characterized in that said means for supplying the polymer substrate comprise at least one die and nozzle arrangement adapted to project the polymer substrate towards the nip of said rotatable rollers in the form of a tubulus, spray or bubble.
Claim 3
Dependent Claim
87 words
Apparatus according to claim 1, in which said die and nozzle arrangement includes a tube within the die, which in its upper portion comprises means for receiving compressed air and at its lower end the outer wall of this tube is provided with a plurality of longitudinal grooves which form with the surrounding wall of the die a plurality of orifices of a predetermined shape and size through which the polymer substrate is adapted to be extruded in the form of a generally tubular curtain of filaments.
Claim 4
Dependent Claim
25 words
Apparatus according to claim 2, wherein said tube within the die is rotatable and means are provided for rotating said tube about its longitudinal axis.
Claim 5
Dependent Claim
41 words
Apparatus according to claim 2, wherein said tube within the die comprises another smaller tube therewithin through which a strand of predetermined material is adapted to pass, and means for introducing said strand into said smaller tube and forwarding it therethrough.
Claim 6
Dependent Claim
38 words
Apparatus according to claim 2, wherein said tube within the die comprises another smaller tube therewithin and means are provided to inject compressed air into said smaller tube as well as from the outside onto the extruded polymer.
Claim 7
Dependent Claim
126 words
Apparatus according to claim 1, in which said die and nozzle arrangement includes a tube within the die, which in its upper portion comprises means for receiving compressed air and at its lower end the outer wall of this tube forms with the surrounding wall of the die a serrated profile having a plurality of adjacent orifices of a predetermined shape and size through which the polymer substrate is adapted to be extruded under pressure in the form of a curtain of filaments, and means for injecting said compressed air so that it is blasted at the extruded polymer forcing it to disintegrate into a spray of polymeric particles retaining adequate tacky properties for bonding the superimposed fibrous material at the nip point of the rollers.
Claim 8
Dependent Claim
25 words
Apparatus according to claim 6, wherein said tube within the die is rotatable and means are provided for rotating said tube about its longitudinal axis.
Claim 9
Dependent Claim
41 words
Apparatus according to claim 6, wherein said tube within the die comprises another smaller tube therewithin through which a strand of predetermined material is adapted to pass, and means for introducing said strand into said smaller tube and forwarding it therethrough.
Claim 10
Dependent Claim
38 words
Apparatus according to claim 6, wherein said tube within the die comprises another smaller tube therewithin and means are provided to inject compressed air into said smaller tube as well as from the outside onto the extruded polymer.
Claim 11
Dependent Claim
112 words
Apparatus according to claim 1, in which said die and nozzle arrangement includes a tube within the die, which in its upper portion comprises means for receiving compressed air and at its lower eNd this tube forms with the surrounding wall of the die a small circular gap through which the polymer substrate is adapted to be extruded in the form of a continuous polymer tube, and means for injecting said compressed air so that it flows into the center of said polymer tube transforming the latter under air pressure into a tacky bubble which extends downwardly into the nip of said rollers where it engages and combines with the fibrous material.
Claim 12
Dependent Claim
25 words
Apparatus according to claim 10, wherein said tube within the die is rotatable and means are provided for rotating said tube about its longitudinal axis.
Claim 13
Dependent Claim
41 words
Apparatus according to claim 10, wherein said tube within the die comprises another smaller tube therewithin through which a strand of predetermined material is adapted to pass, and means for introducing said strand into said smaller tube and forwarding it therethrough.
Claim 14
Dependent Claim
38 words
Apparatus according to claim 10, wherein said tube within the die comprises another smaller tube therewithin and means are provided to inject compressed air into said smaller tube as well as from the outside onto the extruded polymer.
Claim 15
Dependent Claim
55 words
Apparatus according to claim 1, in which said at least one die and nozzle arrangement is adapted to spray the polymer substrate dissolved in a solvent, and means are provided for supplying said polymer substrate so dissolved to said die and nozzle arrangement and for spraying it towards the nip of said pair of rollers.
Claim 16
Dependent Claim
108 words
Apparatus according to claim 14, wherein said means for supplying the polymer substrate dissolved in a solvent include a first tube mounted within the nozzle to which the polymer substrate so dissolved is introduced and the second tube is provided around the first tube in such a way as to form holes in the nozzle and means are provided to impart suction through said holes so as to effect aerodynamic attraction of some of the fibers from the nip point of the rotatable rollers, thereby aiding in helical rearrangement of said fibers during their twisting into yarn while allowing interfiber slippage to prevent build-up of counter torque forces.
Claim 17
Dependent Claim
56 words
Apparatus according to claim 14, wherein in said means for supplying the polymer substrate there are provided means for spraying through said nozzle a liquid comprising sizing agents, elastomers, fire retarding agents, bonding agents, forming agents, thermoset plastics, blowing agents, softening or stiffening agents or mixtures thereof, intended to provide the resulting yarns with predetermined properties.
Claim 18
Dependent Claim
52 words
Apparatus according to claim 1, wherein a plurality of roller pairs is provided and said means for supplying the polymer substrate comprise a main extruder with a plurality of sub-extruders or separate extruders for each pair of rollers, said sub-extruders or separate extruders being each provided with said die and nozzle arrangement.
Claim 19
Dependent Claim
32 words
Apparatus according to claim 17, wherein the die of each sub-extruder or separate extruder is provided with a small polymer extrusion pumping screw for maintaining constant extrusion pressure and overcoming pressure drops.
Claim 20
Dependent Claim
22 words
Apparatus according to claim 1, wherein the die and nozzle arrangement is such as to produce atomized spray of the polymer substrate.
Claim 21
Dependent Claim
23 words
Apparatus according to claim 1, wherein the die and the nozzle arrangement is such as to produce fibrillated spray of the polymer substrate.
Claim 22
Dependent Claim
25 words
Apparatus according to claim 1, wherein the die and nozzle arrangement is such as to produce a continuous filamentous spray type of the polymer substrate.
Claim 23
Dependent Claim
105 words
Apparatus according to claim 1 wherein at least one of said rollers is perforated and in which the means for continuously supplying fibrous material include licker-in arrangements adapted to convert a predetermined material into a continuous stream of substantially separated fibers and deposit the latter onto the surface of at least one of said rollers which is perforated, and suction means are provided within at least one of said perforated rollers to mainTain said fibers aerodynamically on the surface of said at least one perforated roller while they are conveyed thereon towards the nip of said rollers where they are combined with the polymer substrate.
Claim 24
Dependent Claim
47 words
Apparatus according to claim 22 wherein in addition to said suction means inside said at least one perforated roller, outside blowing means are provided to help maintain said fibers on the surface of said rollers and control their proper conveying towards the nip point of said rollers.
Claim 25
Dependent Claim
100 words
Apparatus according to claim 22, wherein said at least one perforated roller has a surface with at least one slightly indented circumferential line of perforation through which suction is applied from the fiber deposition point on said rollers to the nip point between said rollers where said circumferential indentation forms a continuous cavity through which the polymer substrate in tacky condition and the fibrous material are adapted to pass under slight pressure and wherein they are permitted to combine and consolidate without preventing inter-fiber and inter-molecular slippage needed to retain twist imparted from below during transformation thereof into spun yarn.
Claim 26
Dependent Claim
75 words
Apparatus according to claim 1, wherein the means for continuously supplying fibrous material include licker-in arrangements adapted to convert a predetermined material into a continuous stream of substantially separated fibers and deposit the latter onto the surface of said rollers and air blowing means are provided to maintain said fibers aerodynamically on the surface of said rollers while they are conveyed thereon towards the nip of said rollers where they are combined with polymer substrate.
Claim 27
Dependent Claim
28 words
Apparatus according to claim 25, wherein at least one of said rollers has a perforated surface and is provided therewithin with suction means to aid the aerodynamic effect.
Claim 28
Dependent Claim
26 words
Apparatus according to claim 1, wherein said means for transforming the polymer substrate and the fibrous material into yarn include torque imparting means below said rollers.
Claim 29
Dependent Claim
136 words
Apparatus according to claim 27, wherein said torque imparting means comprise a spindle having a housing with a cavity, a small air turbine member within said cavity, the outer and upper collar section of said turbine member containing a plurality of blades, means for blowing air at high velocity through a plurality of holes into said housing to rotate said turbine member, means for providing a low pressure center air cushion for said turbine member whereby friction is substantially decreased and proper centering of the turbine member facilitated, said turbine member having a V-shaped off center yarn inlet slot to enable the threading of the yarn through a slot in the spindle housing while the turbine member is revolving to continuously impart a positive torque to the material passing by the off center slotted turbine member.
Claim 30
Dependent Claim
31 words
Apparatus according to claim 28, wherein the air blowing means comprise an exchangeable air supply outer ring permitting the spindle to operate in the S direction or in the Z direction.
Claim 31
Dependent Claim
51 words
Apparatus according to claim 1, further comprising a two sided yarn winding arrangement comprising a pair of bobbin elements for continuously winding the produced yarn thereon and means for transferring said yarn from a full bobbin on one side to an empty bobbin on the other side without stopping the operation.
Claim 32
Dependent Claim
56 words
Apparatus according to claim 1, wherein said means for transforming the polymer substrate and the fibrous material into spun yarn include a cooler arrangement and a material restrictive condensing zone through which the combined strand is adapted to pass and in which it can be cooled to cause the polymer to coagulate while in twisted condition.
Claim 33
Dependent Claim
39 words
Apparatus according to claim 1, wherein said rotatable rollers are circumferentially grooved and so positioned side by side that the male members of the grooved surface of one roller enter and press into female members of the other roller.
Claim 34
Dependent Claim
60 words
Apparatus accordinG to claim 1, wherein said rotatable rollers have continuous circumferential grooves on their surface and are so positioned face to face that each groove of one roller faces the corresponding groove of the other roller thus forming a plurality of predetermined cavities at the nip point of said rollers wherein a fluid open-end fibrous strand can be formed.
Claim 35
Dependent Claim
152 words
Apparatus for the manufacture of composite spun yarn comprising a pair of rotatable rollers in face to face relation thereby providing a nip therebetween and comprising means for supplying a polymer substrate which include a die and nozzle arrangement adapted to project the polymer substrate in the form of a tubulus, bubble, atomized or fibrous spray or tubular filament curtain downwardly towards the nip of said pair of rotatable rollers means for continuously supplying fibrous material onto said rollers comprising a pair of licker-in devices and aerodynamic fiber control arrangements, means for transforming the polymer substrate and the fibrous material in contact with each other into spun yarn including a high speed twisting spindle and a yarn winding arrangement for continuously winding the obtained spun yarn thereon, characterized in that all said elements are constructed very tightly and closely one to the other and form a compact and fully integrated universal unit.
Claim 36
Dependent Claim
152 words
Apparatus for the manufacture of composite spun yarn comprising a pair of rotatable rollers in face to face relation thereby providing a nip therebetween and comprising means for supplying a polymer substrate which include a die and nozzle arrangement adapted to project the polymer substrate in the form of a tubulus, bubble, atomized or fibrous spray or tubular filament curtain downwardly towards the nip of said pair of rotatable rollers means for continuously supplying fibrous material onto said rollers comprising a pair of licker-in devices and aerodynamic fiber control arrangements, means for transforming the polymer substrate and the fibrous material in contact with each other into spun yarn including a high speed twisting spindle and a yarn winding arrangement for continuously winding the obtained spun yarn thereon, characterized in that all said elements are constructed very tightly and closely one to the other and form a compact and fully integrated universal unit.
Claim 37
Dependent Claim
91 words
Apparatus as per claim 34 adapted to the conversion of polymer resins directly into a spun yarn on one apparatus comprising polymer extrusion means for the extrusion at high velocity of a fibrous spray of substantially crystalline fine staples, air cooling and air suction roller means for condensing said fibers without the addition of any other fibers into a continuous fibrous strand, a twisting spindle means for converting said strand into twist containing spun yarns and means for continuously collecting linearly said spun yarn into large size packages on winding means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |