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WO2002032360A2 - Produit absorbant et procede de fabrication associe - Google Patents

Produit absorbant et procede de fabrication associe Download PDF

Info

Publication number
WO2002032360A2
WO2002032360A2 PCT/BR2001/000129 BR0100129W WO0232360A2 WO 2002032360 A2 WO2002032360 A2 WO 2002032360A2 BR 0100129 W BR0100129 W BR 0100129W WO 0232360 A2 WO0232360 A2 WO 0232360A2
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent
sheet
absorbent product
product
absorbent core
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.)
Ceased
Application number
PCT/BR2001/000129
Other languages
English (en)
Other versions
WO2002032360A3 (fr
Inventor
Francisco Javier Valdivia Hernandez
Carlos Da Silva Macedo, Jr.
Eduardo Cezar Andreo Aledo
Altair De Paula Vitor
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.)
Kenvue Ltda
Original Assignee
Johnson and Johnson Industria e Comercio Ltda
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 Johnson and Johnson Industria e Comercio Ltda filed Critical Johnson and Johnson Industria e Comercio Ltda
Priority to AU2001293529A priority Critical patent/AU2001293529A1/en
Priority to MXPA03003524A priority patent/MXPA03003524A/es
Publication of WO2002032360A2 publication Critical patent/WO2002032360A2/fr
Publication of WO2002032360A3 publication Critical patent/WO2002032360A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15723—Partitioning batts; Cutting
    • 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs

Definitions

  • the present invention refers to manuf cturing processes for disposable absorbent products, such as diapers, sanitary napkins and the like, having a shape that has a compulsory loss of material reduced to zero. More particularly, the present invention relates to a manuf cturing processes for disposable absorbent products having an absor- bent core that has a lower possibility of side leakage. Background of the invention
  • An absorbent product comprises a fluid permeable sheet on the inner side in touch with the user's body.
  • a fluid impermeable sheet having a absorbent core disposed between said sheets.
  • the fluid permeable sheet is generically made of a soft and non-irritating material. According to the present state of the art, it can be a sheet of woven or non woven material natural (for example wood or cotton fibers) or artificial fibers (for example polyester or polypropylene, or a combination of both, a perforated plastic film, a porous or cross-linked foam and the like.
  • the fluid permeable sheet may be of known hydrophilicity, showing a tendency to remain dry, and may be a mono or multilayered material .
  • the fluid impermeable sheet has the role to prevent the absorbed and retained fluid in the absorbent core from passing to the user 1 clothes or skin, being generically a thin polyethylene film.
  • the fluid impermeable sheet may also be permeable to vapor and, in such case, will be provided with small pores or made of a material which provides impermeability only to fluids.
  • the absorbent core of known disposable absorbent products is usually formed of a cellulose fiber pulp, often comprising super-absorbent polymers capable of forming a gel in contact with liquids as well.
  • Other absorbent cores are also known such as papers, peat moss, artificial fibers, and foams and like.
  • Processes for preparing and cutting disposable absorbent products and in particular disposable diapers from a continuous web of base material are known in the art .
  • the cuts are made by knives, ultrasound, laser or water under pressure and the like, in order to obtain absorbent products cut in strip's longitudinal or transversal direction.
  • a semi finished absorbent structure of the kind herein dealt with has greater outer borders than the final product, being thus necessary to cut in order to remove, reduce or shape some specific areas, such as the groin region or adjacent regions.
  • the state-of-the-art disposable absorbent product aiming at the adaptation to the user' s anatomy, show in the groin region a relatively narrow width preceded by enlargements at the opposite ends forming sinuous contours after cutting the base material web. The cut portions of such shaped regions are discarded, without reusing such cut material .
  • a process of making an absorbent product comprising steps of feeding a continuous sheet of fluid impermeable material having a longitudinal length and a trans- verse width, it being fed in the direction of longitudinal length of said continuous sheet of fluid impermeable material, placing an absorbent core transversally in relation to the longitudinal length of said continuous sheet of fluid impermeable material, the absorbent core having a length, a central region and a longitudinal centerline, placing a continuous sheet of fluid permeable material in such manner that the absorbent core is located between said continuous sheet of fluid impermeable material and said continuous sheet of fluid permeable material, joining the continuous sheet of fluid impermeable material to the continuous sheet of fluid permeable material by means of adhesion and forming at least a continuous double sheet, the continuous double sheet having a longitudinal centerline, a transverse width and opposite borders, periodically cutting said continuous double sheet to form a succession of transversally disposed absorbent products, side by side, said product having a longitudinal centerline, the central region of
  • an absorbent product having a transverse length, a front end, a back end and an absorbent core
  • the absorbent core having a transverse length and a central region wherein the central region of the absorbent core is substantially in the middle of the transverse length of the absorbent core and in a region substantially adjacent to a region defined by half the measure the transverse length of the absorbent product, the central region being located between 25% and 49% of a distance of the transverse length of the absorbent product in relation to the front end of the absorbent product.
  • the process of the invention allows the continuous production of absorbent products presenting an enhanced absorption capacity and lower possibility of side leakage and with a compulsory loss of material reduced substantially to zero.
  • the object of the present invention is achieved through a process of making an absorbent product by placing an absorbent core in a sheet of continuous material having a longitudinal length and two opposite borders, in order to produce a plurality of absorbent products disposed side by side, with longitudinal length of the absorbent products disposed parallel to each other and transversally in relation to the length of the sheet of the continuous material, wherein the absorbent core has a central region located over the longitudinal axis thereof towards the front end of the absorbent product and equidistant from the sheet of a con- tinuous material's borders.
  • Figure 1 - is an upper view of a sheet of material, which takes part in the process of making an absorbent product .
  • a process of the invention comprises a periodical disposition on a continuous web of a sheet of manufacturing material, indicated by 100, having opposite borders and a longitudinal centerline, of an absorbent core 2 of a transverse length Co and a central re- gion indicated by Pd, transversally to and symmetrically in relation to the web, and obtaining an absorbent products indicated by 1, 1' and 1", of transverse length Cl , in a successive disposition, side by side, transversally and alter- nately oriented by means of a zigzag cutting line defining the respective product's side borders.
  • a back end indicated by 3 and 3 ' of the absorbent products 1 and 1 ' is formed by respective opposite border section of the continuous web of the sheet of manufacturing material.
  • the central region Pd of the absorbent core's region is adapted to receive the greater amount of the user's body fluids and where a longitudinal centerline 4 of the absorbent product is located when in use.
  • the first step of the process comprises feeding a continuous sheet of fluid impermeable material, of a width Cp defined between transversally opposed and parallel borders of the web of the sheet of the manufacturing material.
  • the second step comprises a periodical controlled placement of said absorbent core 2 and centrally in relation to the width Cp of the continuous sheet of fluid impermeable material .
  • the third step comprises placing a continuous sheet of fluid permeable material of a width Cp coinciding with the width of the continuous sheet of fluid impermeable material of step 1 and placed exactly in the same feeding position of the continuous sheet of fluid impermeable material, the continuous sheet of fluid permeable material being associated to the continuous sheet of fluid impermeable ma- terial by means of an adhesion element, forming a double sheet 100 of transverse width Cp and having an absorbent core 2 located between both flexible sheets of impermeable and permeable material .
  • the fourth step of the process comprises cutting the double sheet 100 by means of a cut which, in the present embodiment example, presents a shape substantially of a sawtooth wave, resulting in the successive disposition and ad- jacent to a plurality of absorbent products 1, 1', 1" separated by respective side margins thereof.
  • Each absorbent product is provided with the central region Pd of respective absorbent core 2, located in the middle of the transverse width Cp of the double sheet 100 and in a region substantially adjacent to the region defined by half the transverse length Cl of the absorbent product 1.
  • the transverse length Cl of the absorbent product has the same direction of the transverse width Cp and the measure thereof is substantially smaller than the transverse width Cp of the double sheet 100.
  • the absorbent products succeed along the web of the sheet of manufacturing material 100 in reversed positions, in an alternate manner, wherein adjacent portions of a border 3, 3' transversally opposed of the double sheet form the back end or groin region of respectively adjacent and non alternate absorbent products 1, 1', that is, the absorbent products of the same orientation are always upward or always downward.
  • a contour of respective front ends 5, 5', 5" is defined by a cutting line and touch transversally the opposed borders of said continuous double sheet. In this way, there is no formation of interstices, leftovers or lack of material in the con- tinuous double sheet 100, which are responsible for the compulsory loss of material in the previous art manufacturing processes .
  • longitudinal axes of two consecutive absorbent products 1 and 1" having the same orientation are parallel to each other and are spaced by a distance equivalent to the length of the back end 3 of the absorbent product and coinciding with a section of a plurality of adjacent sections of the double sheet 100 borders.
  • the lon- gitudinal centerline of the double sheet 100 is coincident with the longitudinal centerline of each absorbent core 2 and, therefore, the absorbent cores 2 have a symmetrical disposition in relation to the double sheet 100.
  • the central region Pd of the absorbent core 2 is positioned in the middle of transverse width Cp of the double sheet 100, whereas, in the absorbent products 1, the central region Pd of the absorbent core 2 is located in relation to the middle of transverse length Cl of the absorbent product when approaching the front end.
  • the central region Pd of the absorbent core 2 defines a folding region along to the longitudi- nal centerline 4, the central region Pd being located between 25% and 49% of the distance of the transverse length Cl of the absorbent product 1 in relation to the front end 5 of the absorbent product 1.
  • the central region Pd of the absorbent core 2 is located between 25% and 49%, preferably 37%, of the distance of the transverse length Cl of the absorbent product 1 in relation to the front end of the absorbent product 1.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Manufacturing & Machinery (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un produit absorbant ainsi qu'un procédé de fabrication de ce produit, lequel possède une forme faisant que la perte obligatoire en matériau est pratiquement nulle.
PCT/BR2001/000129 2000-10-19 2001-10-17 Produit absorbant et procede de fabrication associe Ceased WO2002032360A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001293529A AU2001293529A1 (en) 2000-10-19 2001-10-17 An absorbent product and the process of making an absorbent product
MXPA03003524A MXPA03003524A (es) 2000-10-19 2001-10-17 Un producto absorbente y el procedimiento para fabricacion de un producto absorbente.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0004938-7 2000-10-19
BR0004938-7A BR0004938A (pt) 2000-10-19 2000-10-19 Processo de colocação de um núcleo absorvente em um produto absorvente de corpo único e produto absorvente de corpo único

Publications (2)

Publication Number Publication Date
WO2002032360A2 true WO2002032360A2 (fr) 2002-04-25
WO2002032360A3 WO2002032360A3 (fr) 2002-06-27

Family

ID=3945562

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2001/000129 Ceased WO2002032360A2 (fr) 2000-10-19 2001-10-17 Produit absorbant et procede de fabrication associe

Country Status (6)

Country Link
AR (1) AR034564A1 (fr)
AU (1) AU2001293529A1 (fr)
BR (1) BR0004938A (fr)
CO (1) CO5310529A1 (fr)
MX (1) MXPA03003524A (fr)
WO (1) WO2002032360A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003086258A1 (fr) * 2002-04-18 2003-10-23 Sca Hygiene Products Ab Procede de production d'articles absorbants
US6852190B2 (en) 2002-04-18 2005-02-08 Sca Hygiene Products Method for producing an absorbent article
WO2007105131A1 (fr) * 2006-03-10 2007-09-20 Kimberly-Clark Worldwide, Inc. Dispositif et procédé de fabrication d'articles absorbants jetables distincts
US8696855B2 (en) 2009-07-10 2014-04-15 Kimberly-Clark Worldwide, Inc. Simplified absorbent article construction and method of making

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1077006A (en) * 1963-05-10 1967-07-26 Alexander Carus & Sons Ltd Napkins for infants
US3527221A (en) * 1967-03-14 1970-09-08 Mo Och Domsjoe Ab Disposable diaper and process and apparatus for making the same
FR2209520B1 (fr) * 1972-12-13 1976-08-20 Labaz
JP3317836B2 (ja) * 1996-02-28 2002-08-26 ユニ・チャーム株式会社 使い捨て着用物品およびその構成部材の製造方法およびそれにより製造された使い捨て着用物品

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003086258A1 (fr) * 2002-04-18 2003-10-23 Sca Hygiene Products Ab Procede de production d'articles absorbants
US6852190B2 (en) 2002-04-18 2005-02-08 Sca Hygiene Products Method for producing an absorbent article
JP2005522272A (ja) * 2002-04-18 2005-07-28 エスシーエー・ハイジーン・プロダクツ・アーベー 吸収物品の製造方法
WO2007105131A1 (fr) * 2006-03-10 2007-09-20 Kimberly-Clark Worldwide, Inc. Dispositif et procédé de fabrication d'articles absorbants jetables distincts
US8361045B2 (en) 2006-03-10 2013-01-29 Kimberly-Clark Worldwide, Inc. Apparatus and method for manufacturing several distinct disposable absorbent articles on a single machine
US8696855B2 (en) 2009-07-10 2014-04-15 Kimberly-Clark Worldwide, Inc. Simplified absorbent article construction and method of making

Also Published As

Publication number Publication date
AR034564A1 (es) 2004-03-03
BR0004938A (pt) 2002-06-11
MXPA03003524A (es) 2004-01-26
AU2001293529A1 (en) 2002-04-29
WO2002032360A3 (fr) 2002-06-27
CO5310529A1 (es) 2003-08-29

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