CA2486556A1 - Method and apparatus for creating a pulsed stream of particles - Google Patents

Method and apparatus for creating a pulsed stream of particles Download PDF

Info

Publication number
CA2486556A1
CA2486556A1 CA 2486556 CA2486556A CA2486556A1 CA 2486556 A1 CA2486556 A1 CA 2486556A1 CA 2486556 CA2486556 CA 2486556 CA 2486556 A CA2486556 A CA 2486556A CA 2486556 A1 CA2486556 A1 CA 2486556A1
Authority
CA
Canada
Prior art keywords
absorbent
less
particles
kit
pulsing
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.)
Granted
Application number
CA 2486556
Other languages
French (fr)
Other versions
CA2486556C (en
Inventor
Thomas Tombult-Meyer
Frank Hubert Frings
Markus Borbach
Miguel Brandt Sanz
Mattias Schmidt
Peter Dziezok
Claus Peter Stoelzel
John Peter Lankhof
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.)
Procter and Gamble Co
Original Assignee
Individual
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
Priority claimed from EP20020011785 external-priority patent/EP1366824A1/en
Application filed by Individual filed Critical Individual
Publication of CA2486556A1 publication Critical patent/CA2486556A1/en
Application granted granted Critical
Publication of CA2486556C publication Critical patent/CA2486556C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F15/00—Auxiliary appliances for wound dressings; Dispensing containers for dressings or bandages
    • A61F15/001—Packages or dispensers for bandages, cotton balls, drapes, dressings, gauze, gowns, sheets, sponges, swabsticks or towels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B05B12/06—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for effecting pulsating flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2484—Coating or impregnation is water absorbency-increasing or hydrophilicity-increasing or hydrophilicity-imparting

Abstract

The present invention is a method of and an apparatus for creating a pulsed stream of particles in a carrier means, such as air. A pre-metered stream of particles is accumulated in a pulsing chamber of a pulsing means by interrupting the stream of particles by a separator means, which interrupts the flow for a certain portion of the pulse period. The accumulated particles are the removed from the pulsing means by suction, such as by using ejector ejectors.The invention is further directed to a kit or pack of individual absorbent articles which can be produced using the method and the apparatus.

Claims (19)

1. Method of creating a pulsed stream of particles in a carrier means, said method comprising the steps of - suspending a first metered stream of particles in a carrier means, - guiding said first stream to an inlet of a pulsing means, - said pulsing means further comprising - an outlet for discharging said particles and a pulsing chamber positioned between said inlet and outlet, and said pulsing chamber comprising a separator means, - accumulating a portion of said particles in said pulsing chamber, - emptying said particles out of said pulsing means through said outlet by a suction means, characterized in that said accumulation step comprises the step of interrupting said stream of particles between said inlet and said outlet by said separator means for not less than 95%, preferably not less than 90%, more preferably not less than 75% and even more preferably not less than 50% of said time of a pulse.
2. A method of creating a pulsed stream of particles according to claim 1, wherein said step of interrupting includes a rotary motion of said separator means.
3. A method of creating a pulsed stream of particles according to claim 1, wherein said suction means is an venturi type ejector preferably positioned in proximity to the outlet of said pulsing means.
4. A method of creating a pulsed stream of particles according to claim 1, wherein said suction means is a ring-jet-type coaxial ejector, preferably positioned in proximity to the outlet of said pulsing means.
5. A method of creating a pulsed stream of particles according to any of claims 1 to 4, wherein the frequency of the pulses is at least 10 Hz, preferably more than 15 Hz, even more preferably more than 20 Hz.
6. Apparatus for pulsing a metered stream of particular material in a carrier means comprising a metering means for providing a metered stream of particles, a pulsing means, comprising an inlet, an outlet, a pulsing chamber located between inlet and outlet, comprising a separator means, and a suction means, characterized in that said separator means is arranged to interrupt said flow pf particles between said inlet and said outlet for not less than 95%, preferably not less than 90%, more preferably not less than 75% and even more preferably not less than 50% of said time of a pulse.
and in that said suction means is arranged in proximity to said outlet to create a carrier flow.
7. An apparatus for pulsing a metered stream of particular material in a carrier means according to claim 6, wherein said separator means is arranged to not interrupt said carrier flow.
8. An apparatus for pulsing a metered stream of particular material in a carrier means according to claim 6, wherein said carrier means is a gas.
9. An apparatus according to claim 9, wherein said carrier means is air.
10. A kit or pack of individual absorbent articles said absorbent articles being produced by a method of staple manufacturing, said kit or pack of absorbent articles comprising at least 10 individual absorbent articles which have been produced consecutively by said method of staple manufacturing, said absorbent articles each comprising a topsheet and a backsheet and an absorbent core encased between said topsheet and said backsheet, said absorbent core comprising a first material providing for a first absorbent capacity and a second absorbent material comprising particles and providing for a second absorbent capacity, said absorbent material having a longitudinal direction, said absorbent core comprising a front half and a rear half, said halves having equal length as measured in the longitudinal direction, said front half of said absorbent core comprising more than 60% of said second absorbent capacity, said second absorbent material comprised by the absorbent material of each of said absorbent articles having a total weight, said kit or pack of absorbent articles having a average total weight taken as the average of the total weights of the second absorbent material of individual articles, said kit or pack of absorbent articles having a standard deviation of total weight calculated based on the deviation of the total weight of the second absorbent material of individual articles from said average total weight characterized in that said standard deviation of total weight is less than 8 %.
11. The kit or pack according to claim 10 wherein said first material is an absorbent material, preferably a fibrous absorbent material.
12. The kit or pack according to claim 10 wherein said first material is an adhesive material.
13. The kit or pack according to any one of the preceding claims wherein said second absorbent material is a superabsorbent material.
14. The kit or pack according to any one of the preceding claims wherein the fibrous material has a substantially uniform basis weight over the whole area of the core.
15. The kit or pack according to claim 14 wherein the basis weight of the fibrous material is less than 130 g/m2, preferably less than 100 g/m2 and more preferably less than 80 g/m2.
16. The kit or pack according to any one of the preceding claims wherein the standard deviation of total weight is less than 7 %, and preferably less than 6 %, and yet preferably less than 5 %, and yet preferably less than 4 %, and yet preferably less than 3 %, and most preferably less than 2 %.
17. The kit or pack according to any one of the preceding claims wherein said front half of said absorbent core comprises more than 65 %, and more preferably more than 70 %, and yet more preferably more than 75 %, and yet more preferably more than 80 %, and yet more preferably more than 85 %, and yet more preferably more than 90%, and most preferably more than 95 % of said second absorbent capacity.
18. The kit or pack according to any one of the preceding claims wherein the absorbent articles have a crotch width of less than 70 mm.
19. The kit or pack according to any one of the preceding claims wherein the kit or pack comprises more than 12, and more preferably more than 15 and yet more preferably more than 20, and yet more preferably more than 25, and yet more preferably more than 30 individual absorbent articles.
CA2486556A 2002-05-28 2003-05-23 Method and apparatus for creating a pulsed stream of particles Expired - Fee Related CA2486556C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP02011785.9 2002-05-28
EP20020011785 EP1366824A1 (en) 2002-05-28 2002-05-28 Method and apparatus for creating a pulsed stream of particles
EP02017516.2A EP1366825B1 (en) 2002-05-28 2002-08-06 Method and apparatus for creating a pulsed stream of particles
EP02017516.2 2002-08-06
PCT/US2003/016373 WO2003101622A2 (en) 2002-05-28 2003-05-23 Method and apparatus for creating a pulsed stream of particles

Publications (2)

Publication Number Publication Date
CA2486556A1 true CA2486556A1 (en) 2003-12-11
CA2486556C CA2486556C (en) 2010-09-14

Family

ID=29421893

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2486556A Expired - Fee Related CA2486556C (en) 2002-05-28 2003-05-23 Method and apparatus for creating a pulsed stream of particles

Country Status (9)

Country Link
US (1) US20030225382A1 (en)
EP (1) EP1366825B1 (en)
KR (1) KR100628390B1 (en)
AR (1) AR039892A1 (en)
AU (1) AU2003231832A1 (en)
BR (1) BRPI0311304B1 (en)
CA (1) CA2486556C (en)
MX (1) MXPA04011175A (en)
WO (1) WO2003101622A2 (en)

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Also Published As

Publication number Publication date
KR100628390B1 (en) 2006-09-26
EP1366825A2 (en) 2003-12-03
AU2003231832A1 (en) 2003-12-19
AR039892A1 (en) 2005-03-09
BR0311304A (en) 2005-02-15
EP1366825B1 (en) 2018-01-24
US20030225382A1 (en) 2003-12-04
EP1366825A3 (en) 2004-03-03
MXPA04011175A (en) 2005-02-17
WO2003101622A3 (en) 2004-04-22
CA2486556C (en) 2010-09-14
KR20050004881A (en) 2005-01-12
BRPI0311304B1 (en) 2017-02-14
WO2003101622A2 (en) 2003-12-11

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