Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B30—PRESSES
  • B30B—PRESSES IN GENERAL
  • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
  • B30B11/007—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a plurality of pressing members working in different directions
• • 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
  • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
  • A61F13/2051—Tampons, e.g. catamenial tampons; Accessories therefor characterised by the material or the structure of the inner absorbing core
  • A61F13/206—Tampons made of rolled-up material
• • 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
  • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
  • A61F13/2082—Apparatus or processes of manufacturing
  • A61F13/2085—Catamenial tampons
• • 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
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S604/00—Surgery
  • Y10S604/904—Tampons

Definitions

• the invention relates to a tampon, in particular for feminine hygiene, made from a cylindrical blank produced by winding up a band-shaped nonwoven section, which by applying compressive force to jacket sections evenly distributed over its circumference to form a preform with a core with higher compression of the fiber material and surrounding the core Longitudinal ribs are formed with lower compression and are finally deformed by applying radial compressive force to the longitudinal ribs to form the finished tampon.
• the invention further relates to a method and a device for producing such a tampon.
• the invention is based on the object of further developing a tampon known from DE-PS 39 34 153 and the method and the device for its production in such a way that an increase in the suction power is possible while maintaining the buckling strength.
• the tampon according to the invention which solves this task is characterized in that the core is covered by a ring which is annular in cross section. rich highest compression and a central region lying within this annular area with medium compression.
• the stiffness of the tampon is maintained on the one hand, since the annular cross section made of fiber material with the highest compression essentially the same area moment of inertia and therefore in connection with the central area of medium compression has the same stiffness as a core area of uniform compression.
• the suction power is achieved because the suction volume is maintained and the suction speed in the central area is increased by its higher capillary action.
• the method according to the invention is carried out by reshaping the blank consisting of wound band-shaped nonwoven material into a preform as a result of applying compressive forces to spaced-apart jacket sections and by final deforming the preform provided with longitudinal ribs as a result of applying radial compressive forces.
• the further development of this method according to the invention is characterized in that the pressing forces are directed tangentially to a circular cylinder surrounding the longitudinal central axis of the tampon at a predetermined distance.
• the device for producing a tampon according to the invention comprises a number of press testify to the compression of the blank in the core area and the creation of longitudinal ribs in the jacket area as well as a mold for the final deformation of the tampon.
• the pressing tools are each arranged at the inner end of a lever which can be pivoted about a pivot axis between two end positions.
• the arrangement of the pressing tools on the inner end of levers creates the possibility in a simple manner to align the pressing forces necessary to create the tampon according to the invention or to carry out the method according to the invention such that they are tangential to a circular cylinder surrounding the longitudinal central axis of the tampon with a predetermined distance ⁇ which are directed and in this way result in a division of the core area into an annular area of highest compression and a central area within this annular area of lower compression.
• each lever is supported at its outer end via a coupling lever on a support ring and can be pivoted by an adjusting ring, on which the levers are each pivotably mounted by means of a bearing pin.
• the pressing tools interchangeably on the levers and to provide them with protruding pressing cutting edges in order to produce longitudinally running ribs with low compression radially outside the area of highest compression in cross section and longitudinal grooves running between these ribs which increase the suction power of the tampon after the final deformation of the tampon in the manner of chambers in the outer region.
• the drawing shows an exemplary embodiment of the tampon and a device for its manufacture, namely:
• 1 shows a device for producing a preform as part of a machine for producing a tampon
• 2 shows the central part of the device in the open starting position
• Fig. 5 shows a cross section through a tampon
• FIG. 6 shows a schematic illustration of the tampon cross section according to FIG. 5.
• the device for producing a tampon shown in FIG. 1 using an exemplary embodiment comprises eight levers 1, which are each pivotably mounted on an adjusting ring 3 about a bearing pin 2.
• Each lever 1 is articulated at its radially outer end via a coupling bolt 4 to one end of a coupling lever 5, the other end of which is pivotably mounted on a support ring 7 fixed to the frame by means of a bolt 6.
• Both the bolts 6 and the bearing bolts 2 each lie on a circle, the spacing of these bolts from one another resulting from the division of the respective circle predetermined by the number of levers 1.
• Each press tool 9 is formed with a press cutting edge 9a, which can be seen in the center of FIG. 1.
• FIG. 2 shows that the pressing blades 9a of the pressing tools 9 in the open starting position are not directed towards the center of the device, but tangentially to a circular cylinder 10 surrounding the longitudinal central axis with a predetermined distance.
• This circular cylinder 10 is shown in dash-dotted lines in FIG. 2. This ensures that the pressing forces exerted by the pressing tools 9 are not directed centrally but tangentially to a circle surrounding the longitudinal central axis of the tampon to be produced at a predetermined distance.
• This eccentric alignment of the press blades 9a with respect to the center of the device can be adjusted as desired by the respective position of the bearing bolts 2, the design of the levers 1 and the coupling lever 5.
• a cylindrical blank R is inserted into the space between the pressing tools 9.
• This blank R has been produced by winding up a band-shaped fiber fleece section.
• FIG. 5 shows a cross section through a finished tampon T.
• This comprises a core area of different compression, namely an annular area Kr of highest compression and a central area Kz of medium compression.
• This core area is surrounded by an outer area Ar, which was created by the deformed ribs of the preform V, including chambers Ak running in the longitudinal direction of the tampon.
• the lowest compression of the nonwoven material can be found in the outer region Ar which is formed by deforming the ribs of the preform V.
• the highest compression follows in the annular region Kr; A medium compression can be found in the central area.
• the tampon T likewise comprises an integrated tube, as can be seen from the double hatched area in FIG. 6.
• the lower compressed central area Kz is used for the absorption of the body fluid, which is very quickly absorbed by the tampon T due to the low compression in the outer area Ar and due to the presence of the longitudinal chambers Ak and through the annular area Kr to the central area Area Kz is forwarded, which has a certain suction effect due to its medium compression.

Landscapes

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

Priority Applications (2)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6493852

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (71)

Family Cites Families (9)

• 1993
  • 1993-07-28 DE DE4325220A patent/DE4325220C2/de not_active Expired - Fee Related
• 1994
  • 1994-07-26 AT AT94111601T patent/ATE164510T1/de active
  • 1994-07-26 EP EP94111601A patent/EP0639363B1/de not_active Expired - Lifetime
  • 1994-07-26 JP JP7505553A patent/JPH08504654A/ja active Pending
  • 1994-07-26 WO PCT/EP1994/002454 patent/WO1995003766A2/de active Application Filing
  • 1994-07-26 US US08/411,756 patent/US5592725A/en not_active Expired - Lifetime
  • 1994-07-26 DE DE59405567T patent/DE59405567D1/de not_active Expired - Lifetime

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