US3396433A - Apparatus for making non-woven webs - Google Patents

Apparatus for making non-woven webs Download PDF

Info

Publication number
US3396433A
US3396433A US470322A US47032265A US3396433A US 3396433 A US3396433 A US 3396433A US 470322 A US470322 A US 470322A US 47032265 A US47032265 A US 47032265A US 3396433 A US3396433 A US 3396433A
Authority
US
United States
Prior art keywords
duct
bank
air
width
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US470322A
Other languages
English (en)
Inventor
William D Roxlo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US470322A priority Critical patent/US3396433A/en
Priority to SE1475/66A priority patent/SE308814B/xx
Priority to GB5659/66A priority patent/GB1116761A/en
Priority to FR49843A priority patent/FR1468356A/fr
Priority to DE19661510380 priority patent/DE1510380A1/de
Priority to BE676922D priority patent/BE676922A/xx
Application granted granted Critical
Publication of US3396433A publication Critical patent/US3396433A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged

Definitions

  • This invention concerns apparatus for making a deposit of fibrous material and is especially useful for making a continuous non-woven web of fibers. Deposits having a width greater than deposits previously obtainable from similar apparatus can be obtained from the apparatus of this invention.
  • Deposits of particulate material such as fibrous batts are ordinarily formed by using a combination of a feeder for producing an air stream carrying the fibers and a collector for removing the fibers from said air stream and forming a non-woven batt.
  • batts thus formed have had substantially the same width and height as the outlet port of the feeder although some equipment has been capable of producing batts having somewhat increased height.
  • Distribution of fibers in the resulting batts has been controlled to some extent by modifications within the feeder and/ or the collector; however, easily maintainable accurate control over fiber distribution was not attained by these modifications. Even when good control was attained with one type of fiber, a change to other types of fibers usually necessitated substantial additional basic modifications of the apparatus.
  • This apparatus comprises (1) a feeder for producing an air stream carrying fibrous material, (2) a collector comprising at least one foraminous member for removing said fibrous material from said air stream and forming a continuous batt, (3) a connecting duct for conveying said air stream containing fibrous material from the feeder to the collector.
  • the connecting duct contains a baffle bank consisting of a plurality of adjacent baffles attached to at least one wall of the connecting duct and extending into the duct a distance sufficient to have a material effect on the uniformity of the deposit of fibrous material in the collector.
  • each of said baflles is independently and longitudinally adjustable from a first position in which it does not protrude into the connecting duct to a second position in which it extends at least one-fourth of the distance and desirably all the way to the opposing wall of the connecting duct.
  • These adjustable bafiles can also be held at any position between these extremes.
  • This baffie bank can be provided with a smooth-curve profile by fitting an elastomeric channel (similar to an automobile window channel) over 3,396,433 Patented Aug. 13, 1968 the ends of the plurality of battles to cover the step-wise profile formed when the individual battles are adjusted to different heights (see FIG. 10). The adjustability of the profile of the baffle bank and regulation of fiber deposit control remains unimpaired.
  • the baflle bank can also consist of a single bathe in the form of a rectangular plate or parallelepiped of flexible material such as an acrylic resin (Lucite Operation is similar to the above described baffle banks in that due to the vertical flexibility of the plate, localized portions of the plate can by application of external pressure he made to protrude more or less into the connecting duct to regulate air and fiber fiow. Control of air and fiber flow can also be regulated by utilizing a connecting duct with a flexible or elastomeric ceiling so that localized portions of the ceiling can be pressed inwardly into the air stream to control its flow.
  • Apparatus of this invention is useful for forming continuous sheets of non-woven batts of synthetic and natural fibers and mixtures of these.
  • Fibers of cotton, wool, hair cellulosic particles and fibers, fur, asbestos, polyarnides such as nylon, polyacrylics such as polyacrylonitrile, polyvinyls such as polypropylene and polyvinyl chloride, polyesters such as polyethyleneterephthalate, etc. can be used.
  • Uniform deposits of fibrous materials produced by the apparatus of this invention, especially deposits of polyester and polyarnide fibers, are particularly useful in making substrates for poromeric materials.
  • Other uses for uniform non-woven batts of fibrous material produced by the apparatus of this invention include applications in the manufacture of insulation, padding, filler for upholstery and packing, felting, absorbents, etc.
  • FIGURE 1 of the drawings shows a sectional side view of apparatus of this invention.
  • FIGURE 2 is a perspective view of one type of bathe bank construction used in this invention showing how the rabbeted side walls of a plurality of contiguous bafiles provide air-tight cooperation and independent longitudinal adjustability.
  • FIGURES 3, 4, 5, 6, 6A, 7 and 8 are views showing different duct configurations of apparatus of this invention and optional placements of bafile banks on these ducts.
  • FIGURE 9 is a detail drawing of a typical baffle system of this invention.
  • FIGURE 10 is a cross-sectional view of a duct of the type shown in FIGURE 3, as viewed in the downstream direction from a point immediately upstream from the battle bank, the lower portion of the baffie bank being fitted with an elastomeric channel.
  • FIGURE 1 A specific embodiment of the apparatus of this lllVCIl. tion for producing a fibrous batt is shown in FIGURE 1 where fibers dispersed in a moving air stream are produced by a conventional feeder.
  • Typical feeders for producing an air stream carrying fibrous material useful in this invention are disclosed in US. patents Buresh 2,451,915; Langdon et al. 2,703,441; and Buresh et al. 2,700,188.
  • Other means for producing an air stream carrying particulate material useful in this invention are disclosed in US. patents Thomas 1,959,845; Pearce 2,188,- 373; McClure 2,318,243; Plummer et al. 2,676,363 and 2,676,364; and Kennette et al. 2,731,679. The disclosures of these patents are hereby incorporated into this specification.
  • the air stream passes from the feeder 1 through connecting duct 2, the entrance port 3 of which fits snugly with exit port 4 of feeder 1 to avoid air leakage.
  • Duct 2 conveys the air stream past baffles 5 wit-bin the duct to a dual screen condenser which comprises a pair of continuous foraminous belts 7, 7 each of which travels around three rolls 8, 9, 10 and 8, 9', 10', respectively.
  • the height of the opening between belts 7 and 7', at rolls 8 and 8 is equal to the height of exit port 6 of connecting duct 2 and about 0.7510.0 times the height of the entnance port 3 of connecting duct 2.
  • the width of the belts 7 and 7 and the Width of exit port 6 of duct 2 may be from about 0.5 to 2 times the width of entrance port 3 of duct 2, Belts 7 and 7 converge from parallel rolls 8 and 8' to parallel rolls 9 and 9', respectively, forming an exit opening between rolls 9 and 9' having a height of as little as 0.05 of the height between rolls 8 :and 8.
  • the wedge thus formed by the belts acts as an efficient fiber removing area and also consolidates the resulting fibrous batt. If desired only one of the belts need be formainous. Heights of the entrance opening and the exit openings of the condenser are adjustable.
  • Belts 7 and 7' are foraminous woven wire belts in this embodiment and are driven in the directions shown by arrows B and B in FIGURE 1. Belts of about 12 mesh woven from about 22 gauge wire are satisfactory for handling most fibrous materials.
  • the belts can be driven by chains connected to the edge of each belt and meshing with sprockets on the three rOlls associated with each belt.
  • the three rolls associated with each belt are conveniently interconnected by a set of gears (not shown) so that only one of the three rolls need be driven by a power source (not shown). Any suitable means for imparting uniform motion to the rolls and/or belt can be utilized.
  • Cleaning means such as rota-ting brushes 30, 30 can be utilized to clean lint from the belts and can be located anywhere along the "belt except in the fiber collecting portion between rolls 8, 8' and 9, 9'.
  • Lint catching conduits 11, 11 and lint exhaust tubing 12, 12 can be included to cooperate with this brush in keeping the room free of Jim.
  • Conduits for fluid exhaust 13, 13 are also shown in FIGURE 1.
  • FIGURE 2 is a perspective view of one preferred type of construction of baffle bank 15 used in practicing this invention showing how the rabbeted side walls of a plurality of individual contiguous baffle 5 provide air-tight independent longitudinal adjustability; each of the batfles is equipped at its upper end with a threaded stud 21 for attachment to an adjusting means, for example, :as illustrated in FIGURE 9.
  • FIGURES 3 and 4 are a plan view and a side view, respectively, of a preferred connecting duct 2, with entrance pont 3 adapted to be connected to a feeder exit port of similar size and configuration.
  • the duct width increases in the direction of fluid flow (shown by arrow), While maintaining constant height and reaches a maximum width at 14.
  • a bank of baflles 15 is positioned across the duct :at 16, about -20 inches upstream of the connecting duct exit port.
  • the section of duct 2 containing these baffies is referred to as expander section (A) of the duct and the section (B) immediately downstream of section (A) is the venturi section, so-ca'lled because of a substantial increase (usually several fold) in height of the duct in this section.
  • the apparatus of this invention operates most efficiently and produces fibrous batts of greatest uniformity if the height of section (A) is substantially constant (except for the baffles) and the width of section (B) is substantially constant or decreases somewhat toward its exit port, i.e., 10% or less.
  • batfles are support ed by transverse plate 17 attached by adhesive or welding or other suitable means to the outer face of top wall 18 of duct 2 and extending across the entire width of the duct.
  • Piercing the top duct wall is slot 19 angled at 60 to the interior top surface of the duct.
  • a plurality of narrow adjustable baffles shown in more detail in FIGURE 9) which are rabbeted or otherwise slidably interconnected with each other to form a continuous inverted air-tight dam across the upper interior of duct 2 for its entire width.
  • each baffle is individually adjustable to any desired level from a position in which it does not protrude into duct 2 to a position in which it protrudes into the duct very substantially and positively affects the flow of air therethrough thereby controlling web formation.
  • the baflies can be adjusted to touch the opposing wall (bottom) of duct 2 but usually this is unnecessary.
  • more extreme bafile bank profiles are possible with a bank containing a plurality of bafiles than when a single flexible baflle constitutes the whole bank. Normally, however, extreme profiles are unnecessary and a single flexible baflle is adequate, besides being free from fiber-catching corners and edges.
  • FIGURES 5 .and 6 and 6A are plan views of alternative useful embodiments of connecting ducts and FIGURES 7 and 8 represent side views of alternative configurations which may be utilized. Any of the plan view configurations of FIGURES 3, 5 and 6 and 6A can be used in conjunction with the side view configurations of FIGURES 4, 7 and 8 to provide connecting ducts useful in this invention.
  • battle bank 15 is fitted closely to the side walls of the duct 2 to prevent leakage of air between the side wall of the duct and the adjacent baflle.
  • FIGURE 4 illustrates an embodiment in which connecting duct 2 contains two baflle banks 15 and 15' in opposed relationship to each other. This embodiment provides substantially more control of product uniformity than a single bank of baffles.
  • bafiiies In practice, of course, it is possible, following proper adjustment of all bafiies to obtain a desired uniformity of product, to substitute one or more fixed baffie banks for one or more of the banks of independently adjustable battles. This is accomplished by simply cutting a single sheet of material to produce the same profie or a smooth curve of the same profile as the adjusted bafiie bank it replaces. It has been found convenient in practice using a dual bank of batfles as in FIGURE 4 to have that baflle bank, which is attached to the bottom surface of the duct (represented by 15), in the form of a fixed solid sheet of material having a straight upper edge parallel to the bottom interior surface of the duct and spaced the distance of 0.1-1 inch therefrom for a duct having a height of 2 inches.
  • FIGURE 7 illustrates a connecting duct in which the baffie bank 15 is positioned near the entrance port of expanding section (A) of the duct.
  • FIGURE 8 illustrates another embodiment in which the side view configuration of the connecting duct uniformly increases in height in the direction of flow of air indicated by the arrow and the upper baflle bank 15 is positioned about mid-way between the entrance and exit ports of the connecting duct.
  • each baffle bank 15' is in the form of a fixed sheet of metal attached to the bottom wall 20 of the duct and angles forward at about 60 to the bottom surface of the duct. Baflie angles of 10 to on this basis are useful.
  • each baffle bank extends from one side wall of the connecting duct to the opposite wall and is closely fitted to each wall to prevent leakage between the side wall and the adjacent baflle.
  • baffle banks illustrated can be positioned in any part of expander section (A) of connecting duct 2 and there can be one, two or several bafiie banks, depending upon the uniformity requirements of the particular material being deposited and its physical characteristics taken together with the rate of fluid flow, the size and thickness of the deposit desired and the width of the deposit produced relative to the width of the feeder exit port.
  • FIGURE 9 A typical bafile arrangement useful for controlling air streams carrying fibrous material is shown in detail in FIGURE 9.
  • a threaded stud 21 is attached to or integral with bafile 22, and control wheel 23 having a circumferential groove 24 around its lower portion is threaded on the stud.
  • the groove of the control Wheel rides in an opening 25 in a support member 26 fixed to a wall of duct 2 so that rotation of the control wheel moves the attached baffle into or out of the duct.
  • Each bafile is slideably secured to a guide member 27 by means of a spring loaded bolt 28.
  • Baflie position is empirically determined for each combination of primary factors involved in operating the apparatus, including the nature of the feeder, collector, air velocity, ratio of air volume to volume of particulate material, duct configuration, etc.
  • Other useful means for providing variable bafile positions include the use of clamps, cotter pins, spring clips, etc., to hold a slideable baffle in the desired position.
  • stud 21 can be rotatably attached to bafiie 22 and threadably mounted in a support member 26 so that rotation of the stud by means of a screw driver, wrench, etc., moves the baffie into or out of the duct.
  • This arrangement is also suitable for control of a baffie bank consisting of a single flexible bafiie as described above, the only difference being that a plurality of threaded studs are attached to the baflie along its length and operate to move the associated portions of the flexible baffle into or out of the duct. Seals 29 shown in FIGURE 9 can be used to minimize air leakage around the bafiies.
  • FIGURE is a view in cross-section of a duct 2 of the type shown in FIGURE 3 as viewed in the downstream direction from a point immediately upstream from the bafiie bank which protrudes from top wall 18, the lowermost portion of the bafiie bank being fitted with an elastomeric channel 30, whereby the channel covers the step-wise profile formed by the individual bafiies 5 and provides the balfie bank with a smooth-curve profile.
  • the uppermost portion (not shown) of the baflle bank 15 which extends upwardly from top wall 18 has a structure :generally as illustrated in FIG- URES 3 and 9.
  • baflies can be located near the entrance part of section (A) of duct 2 (e.g., as shown in FIGURES 6 and 6A) best control of deposit uniformity is attained if an adjustable bafile bank is located horizontally perpendicular to the air flow across the top of duct 2 and close to the widest portion of section (A) e.g., as shown in FIGURE 3), preferably about 2-10 inches upstream from the widest portion.
  • Such a baffie bank is angled about -75 forward (with the direction of air movement) relative to the top interior surface of the duct and is free from air leakage through the bank and around the ends thereof.
  • the second bank is conveniently a thin rigid rectangular plate welded or otherwise attached to the bottom and sides of the duct interior and with one face having an area ranging from 10-50% of the cross sectional area of duct 2 at the position of this second bafiie bank.
  • one or more additional baflle banks can be included in the connecting duct but usually none is necessary.
  • baflies about four inches wide are a convenient size for use in a connecting duct up to about three inches in height and -200 inches wide, although better control is attained with the narrow ducts in this range by bafiies 2-3 inches wide.
  • the battle should slant forward in the direction of air flow at to the interior surface of the duct to which the battle is attached.
  • Bafiles usually have rounded or chamfered edges to prevent snagging of fibers thereon.
  • a desirable height for section (A) of the connecting duct is 1-5 inches with a height of 1.5-3 inches preferred as affording best control with conventional feeders and collectors.
  • Air velocity is at least 1000 feet per minute and preferably about 6000-8000 feet per minute at the entrance port of the connecting duct and 4000-6000 feet per minute as it passes the last bank of bafiles in the connecting duct.
  • Air velocity is at least 1000 feet per minute and preferably about 6000-8000 feet per minute at the entrance port of the connecting duct and 4000-6000 feet per minute as it passes the last bank of bafiles in the connecting duct.
  • the entire connecting duct and its connection with the feeder is air-tight.
  • Operation of the apparatus of this invention is extremely simple.
  • the feeder is operated to provide an air stream containing fibrous material and this material is conveyed through duct 2 and removed from the air stream by the collector. Then if examination of the initial deposit reveals a lengthwise streak of lean or heavy deposit, the operator need then merely note the distance of the streak from the edge of the deposit and adjust the bathe or baflles at a corresponding distance from the corresponding edge of duct 2. Sometimes more than one bathe in this area will need slight adjustment. Bafile adjustments are very sensitive and it is common for an adjustment of a bafide (lengthwise) by 0.010 inch to produce a change in a fibrous deposit of one ounce per square yard in the area of the deposit controlled by that baifie. Increasing the protrusion of the baffle into the air stream normally decreases the deposit in the affected area of the batt and vice versa.
  • collectors useful in this invention for removing particulate material from an air stream can be used.
  • These include rotary foraminous drums such as the drums disclosed in US. Patents 2,451,915 and 2,700,188 referenced above and a continuous foraminous belt such as the above referenced US. Patent 2,703,441 discloses.
  • the other US. patents referenced above disclose additional foraminous members useful as collectors in this invention and the disclosures of these collectors are hereby incorporated into this specification.
  • the discharge end of feeders useful in this invention is desirably about /2-5 inches in height and about 10 to inches or more in width and fits snugly with entrance 3 of duct 2 to provide an air-tight smooth interior surface with a minimum of interference to air flowing therethrough.
  • exit port of duct 2 should cooperate with the entrance opening between belts 7 and 7' at rolls 8 and 8' and be about the same size and configuration as this opening.
  • duct 2 height and/or width can increase or decrease in certain cross sectional areas. Most uniform products are obtained with apparatus of this invention in which duct height or width changes are gradual.
  • connecting duct 2 desirably has a Width considerably greater than its height because improved control over distribution is then possible.
  • a connecting duct having a length of from about l-15 feet is most satisfactory.
  • Apparatus of this invention is particularly useful in making wide uniform deposits of particulate material.
  • duct 2 increases in width in the direction of air flow, it forms deposits having a width greater than the width of the feeder outlet.
  • This is paticularly advantageous because it permits production of wide batts without the expense of buying large feeders.
  • Good control over distribution of fibrous material can be attained using ap- 7 paratus of this invention in which connecting duct 2 width changes at a rate up to about 0.75 unit per unit of length. Satisfactory distribution of particulate material adequate for most purposes can be attained using apparatus of this invention when duct 2 width changes at a rate beyond this figure.
  • Duct 2 preferably has a rectangular cross-section throughout but other configurations which permit control of air/fiber fiow'by 'baflles can be used and need not be symmetrical.
  • a duct with a semi-circular cross-section with one flat side or any similar arrangement can be used.
  • Properties of fibrous batts and granular material proucked by the apparatus of this invention can be varied by increasing or decreasing air velocity at the removing means. Fibrous batts having a very desirable combinationof strength, uniformity and surface smoothness are formed when duct height increases just before the entrance to the dual screen condenser and air velocity at this entrance is about 1000 to 3000 feet per minute. A large proportion of the fibers in batts produced with these conditions are disposed in a chevron configuration in the vertical plane. The shape of these chevron's can be varied by varying the air velocity.
  • Interior surfaces of ducts of this invention preferably have a minimum number of obstructions and interruptions to fluid flow. Fluid leakage from ducts of this invention is also preferably held to a minimum.
  • Ducts can be fabricated from sheet metal, plastic materials (polyacrylic resins, polyamides, polyaldehydes), wood, glass and any other suitable conduit material.
  • baffle is used in this specification to designate any member useful in controlling air flow ducts of this invention including paddles, vanes, gates, threaded members, etc.
  • Bafile Width is not critical but a large number of baffles per 'bafile bank permits more exact control of product uniformity than a small number.
  • other fluids such as steam, wet or dry, may be used and in some instances, the fluid carrying the fibers may be a liquid such as water or other suitable medium.
  • Apparatus for making a uniform deposit of fibrous materials which comprises a feeder for providing an air stream carrying fibers,
  • a collector comprising at least one foraminous member for removing said fibers from said air stream
  • a connecting duct positioned to convey said air stream from the feeder to the collector
  • At least one continuous bafile bank positioned to protrude from an interior wall of the duct toward the opposite interior wall, said bank extending transversely across the entire width of the duct and comacute angle relationship with the-interior wall'.
  • bafiiebankis located in a laterally expanding section (A)"of the connecting duct having a rectangular cross section and forms a dam across the top interior of the duct and horizontally perpendicular to its longitudinal axis, the width of section (A) increasing in the direction of its exit port.
  • bafile bank includes an elastomeric channel strip capped -.overthe protruding ends thereof.
  • asecond bafile bank is positioned transversely across the lower interior portion of section (A) of the connecting duct in: opposed relationship to the bank formed by the first-mentioned baffle bank. 4 a
  • section (A) of the connecting duct is located 0-20 inches from'the exit port of said duct.
  • section (B) of the connecting duct decreases uniformly in width toward its exit port in an amount up to 10% 8.
  • said collector comprises a dual screen condenser.
  • section '(A) has a rectangular cross section of substantially constant height of about 1-5 inches and a width which is 10l00% greater at the exit port than at the entrance port and section (B) has a rectangular cross section of substantially constant width equal to the width of the exit port of section (A) and a height at its exit port of about 0.75-10 times that at its entrance port.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US470322A 1965-02-23 1965-06-28 Apparatus for making non-woven webs Expired - Lifetime US3396433A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US470322A US3396433A (en) 1965-02-23 1965-06-28 Apparatus for making non-woven webs
SE1475/66A SE308814B (it) 1965-02-23 1966-02-04
GB5659/66A GB1116761A (en) 1965-02-23 1966-02-09 Apparatus and process for making deposits of fibrous material
FR49843A FR1468356A (fr) 1965-02-23 1966-02-16 Appareil de fabrication d'une nappe continue non tissée de fibres
DE19661510380 DE1510380A1 (de) 1965-02-23 1966-02-23 Ablegung von Fasermaterial
BE676922D BE676922A (it) 1965-02-23 1966-02-23

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43459165A 1965-02-23 1965-02-23
US470322A US3396433A (en) 1965-02-23 1965-06-28 Apparatus for making non-woven webs

Publications (1)

Publication Number Publication Date
US3396433A true US3396433A (en) 1968-08-13

Family

ID=27030241

Family Applications (1)

Application Number Title Priority Date Filing Date
US470322A Expired - Lifetime US3396433A (en) 1965-02-23 1965-06-28 Apparatus for making non-woven webs

Country Status (6)

Country Link
US (1) US3396433A (it)
BE (1) BE676922A (it)
DE (1) DE1510380A1 (it)
FR (1) FR1468356A (it)
GB (1) GB1116761A (it)
SE (1) SE308814B (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501813A (en) * 1965-11-10 1970-03-24 Int Paper Canada Method of forming a continuous fibrous web
US3981651A (en) * 1973-05-19 1976-09-21 Adolf Buddenberg Gmbh Device for producing plate-shaped workpieces
US4035870A (en) * 1975-12-24 1977-07-19 Crown Zellerbach Corporation Fiber distribution and depositing apparatus
US4706340A (en) * 1985-07-02 1987-11-17 Mo Och Domsjo Ab Method and an arrangement for producing a fibre layer
US4827574A (en) * 1987-03-19 1989-05-09 Japan Cotton Technical And Economic Research Institute Of Mengyokaikan Device for removing short fibers
CN114836904A (zh) * 2022-04-26 2022-08-02 大连华阳新材料科技股份有限公司 自动调整成网两边均匀性系统及其调整方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL171732C (nl) * 1971-11-08 Kendall & Co Werkwijze voor het vervaardigen van een niet-geweven vezelbaan, alsmede inrichting voor het uitvoeren van de werkwijze.
DE3410443C2 (de) * 1984-03-22 1992-01-23 Spinnbau GmbH, 2820 Bremen Vorrichtung zum Einleiten eines von einer Krempel über ein Transportband herangeführten Flores in einen Kalander

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US735217A (en) * 1900-12-06 1903-08-04 Julius De Long Pneumatic apparatus for producing mats or bats of fibrous material.
US735218A (en) * 1901-08-02 1903-08-04 Julius De Long Process of producing mats or bats of fibrous material.
US2195158A (en) * 1938-09-02 1940-03-26 Felix J Watts Means for depositing separated fibers of fibrous material entrained in a stream of air in a continuous layer upon a traveling surface
US2731679A (en) * 1952-06-03 1956-01-24 Chicopee Mfg Corp Method of making nonwoven fabric
FR1124490A (fr) * 1954-03-01 1956-10-11 Tmm Research Ltd Perfectionnements au transport et à la distribution pneumatiques des fibres textiles
GB861476A (en) * 1957-02-04 1961-02-22 A E Callaghan & Son Ltd Improvements relating to machines for forming pads or padding from textile or other fibres
US3039137A (en) * 1958-02-10 1962-06-19 American Biltrite Rubber Co Apparatus for forming plastic sheets
US3110182A (en) * 1959-12-23 1963-11-12 Botany Ind Inc Cotton sampling apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US735217A (en) * 1900-12-06 1903-08-04 Julius De Long Pneumatic apparatus for producing mats or bats of fibrous material.
US735218A (en) * 1901-08-02 1903-08-04 Julius De Long Process of producing mats or bats of fibrous material.
US2195158A (en) * 1938-09-02 1940-03-26 Felix J Watts Means for depositing separated fibers of fibrous material entrained in a stream of air in a continuous layer upon a traveling surface
US2731679A (en) * 1952-06-03 1956-01-24 Chicopee Mfg Corp Method of making nonwoven fabric
FR1124490A (fr) * 1954-03-01 1956-10-11 Tmm Research Ltd Perfectionnements au transport et à la distribution pneumatiques des fibres textiles
GB861476A (en) * 1957-02-04 1961-02-22 A E Callaghan & Son Ltd Improvements relating to machines for forming pads or padding from textile or other fibres
US3039137A (en) * 1958-02-10 1962-06-19 American Biltrite Rubber Co Apparatus for forming plastic sheets
US3110182A (en) * 1959-12-23 1963-11-12 Botany Ind Inc Cotton sampling apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501813A (en) * 1965-11-10 1970-03-24 Int Paper Canada Method of forming a continuous fibrous web
US3981651A (en) * 1973-05-19 1976-09-21 Adolf Buddenberg Gmbh Device for producing plate-shaped workpieces
US4035870A (en) * 1975-12-24 1977-07-19 Crown Zellerbach Corporation Fiber distribution and depositing apparatus
FR2336506A1 (fr) * 1975-12-24 1977-07-22 Crown Zellerbach Corp Appareil pour distribuer et pour deposer des fibres
US4706340A (en) * 1985-07-02 1987-11-17 Mo Och Domsjo Ab Method and an arrangement for producing a fibre layer
US4827574A (en) * 1987-03-19 1989-05-09 Japan Cotton Technical And Economic Research Institute Of Mengyokaikan Device for removing short fibers
CN114836904A (zh) * 2022-04-26 2022-08-02 大连华阳新材料科技股份有限公司 自动调整成网两边均匀性系统及其调整方法
CN114836904B (zh) * 2022-04-26 2023-11-03 大连华阳新材料科技股份有限公司 自动调整成网两边均匀性系统及其调整方法

Also Published As

Publication number Publication date
FR1468356A (fr) 1967-02-03
GB1116761A (en) 1968-06-12
SE308814B (it) 1969-02-24
BE676922A (it) 1966-08-23
DE1510380A1 (de) 1970-10-08

Similar Documents

Publication Publication Date Title
US2931076A (en) Apparatus and method for producing fibrous structures
CN106192216B (zh) 用于由长丝制造纺粘型非织造织物的方法和设备以及纺粘型非织造织物
US4153488A (en) Manufacture of fibrous web structures
US4016319A (en) Biaxially oriented nonwoven fabric having long and short fibers
US3698039A (en) Apparatus for spreading tows of continuous filaments into sheets
US3256569A (en) Web density control means for web forming apparatus
US3314122A (en) Apparatus for forming non-woven web structures
DK145308B (da) Fremgangsmaade til fremstilling af et biaksialt orienteret ikke-vaevet stof og apparat til udoevelse af fremgangsmaaden
US3396433A (en) Apparatus for making non-woven webs
US2986780A (en) Method and apparatus for forming patterned webs
DE1760812C3 (de) Verfahren und Vorrichtung zur Herstellung eines als Grundlage fur Tuftingteppiche dienenden Vlieses
US5093069A (en) Process and device for the production of mineral wool nonwoven fabrics especially from rock wool
US3939532A (en) Manufacture of fibrous web structures
US3994047A (en) Apparatus for the twin-wire air laying of fibrous pads
CA1095670A (en) Filament quenching apparatus
US2460899A (en) Method of mat formation
DK161343B (da) Fremgangsmaade til fremstilling af en materialebane og anlaeg til udoevelse af fremgangsmaaden
US4186463A (en) Apparatus for making biaxially oriented nonwoven fabrics and method of making same
US3374106A (en) Material drying method and apparatus
US4285647A (en) Apparatus for the manufacture of fibrous webs
CA1042174A (en) Fiber distribution and depositing apparatus
US3764465A (en) Suction box and baffle for fourdrinier type of papermaking machine
US4473428A (en) Process and apparatus for contacting a powder with a fibrous web
GB1220464A (en) Improvements in the production of a fibrous web of non-woven fabric
US4065832A (en) Apparatus for forming a fibrous structure