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
  • A61F13/15804—Plant, e.g. involving several steps
• • 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
  • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
  • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
  • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs

Definitions

• the invention refers to a process for manufacturing a disposable pant or pant diaper, said process comprising continuously feeding a web along a travelling path, said web having a longitudinal direction coinciding with said travelling path and a transverse direction perpendicular to said longitudinal direction, and being delimited by first and second end edges extending in said longitudinal direction.
• the invention also refers to a product manufactured by the process.
• the disposable pants or disposable pant diapers be as comfortable as possible.
• the customers want disposable pants or disposable pant diapers that, during use, do not have seams running over the hips of the user, on the waist sides or a seam in the crotch region.
• the disposable pants are cut from a web and a number of cut-out portions are cut out from the web to form leg openings in the pants.
• the web is also cut in such way as to form a back body portion of the pant and a front body portion.
• the back body portion and the front body portion are bonded to each other, forming a waist-encircling part.
• some of the width of the front body portion is cut away before the back body portion is attached to the front body portion.
• GB 2257347 shows a process for manufacturing a disposable pant.
• a web is continuously fed in its longitudinal direction, and is divided in an upper and a lower part along a longitudinal centre line, which parts are bonded to each other along the longitudinal centre line.
• the upper part is intended to form a back body portion of the pant and the lower part is intended to form a front body portion of the pant.
• the back body portion consists of an essentially non-stretchable material
• the front body portion consists of a pre-stretched material.
• a number of cut-out portions are cut out of the web to form each of the leg openings of the pant.
• the cut-out portions have a desired size and shape and are symmetric with respect to a line running in the transverse direction of the web, centrally through the upper and lower part of each pant blank.
• the web is then folded in two along the longitudinal centre line.
• the folded web is then bonded and cut to form the individual pants.
• the pre- stretched front body portion contracts in such way that the back body portion stretches over the waist sides of the user when the pant is in use, offering the user a more comfortable pant with no seams positioned directly on the waist sides.
• the pant described in GB 2257347 is produced with minimum waste and has no seams on the waist sides, there still exist some problems related both to the production process and to the pant itself.
• the front body has to be made of a pre- stretched material, and the back body of a different material.
• the production line has to include a first slow step with a pre-stretching of the material in the front body portion and a second step of bonding that material to another material in the back body portion with a seam that would land in the crotch region of a user during use.
• the above mentioned needs are met and the above mentioned problems are rectified, with a highly efficient method for producing disposable pants according to the invention with a minimum of waste and a high flexibility with regard to production alternatives.
• the disposable pant or disposable pant diaper according to the invention will have waist side seams displaced towards the front portion of the pant, and no seam in the crotch region of the pant.
• a typical disposable pant, or pant diaper comprises a liquid-impervious back sheet facing away from a user during use, and a liquid-pervious top sheet facing the user during use, and one or more absorbent bodies arranged therebetween.
• the disposable pant may also be intended for use with one or more absorbent inserts.
• the back sheet may be of any liquid-impermeable material or material that has been made liquid-impermeable, e.g., a treated nonwoven, or any plastic material, or a laminate of nonwoven.
• the top sheet may be of any inherently liquid-permeable material or of a material that has been treated to be liquid-permeable, e.g., nonwoven, textiles or perforated plastic film.
• the absorbent bodies may be of any liquid retaining material, or layers of liquid retaining material, or a combination of liquid distributing material and liquid retaining material.
• the absorbent body may also comprise a superabsorbent which is an absorbent polymer material capable of imbibing fluids in an amount corresponding to several times the dry weight of the superabsorbent and which upon absorption swells into a fluid-containing gel.
• the invention refers to a process for manufacturing of a disposable pant originating from a pant blank, which disposable pant comprises a front portion, a back portion and a central portion extending between the front portion and the back portion.
• the disposable pant also comprises side edges forming leg openings of the pant and thus delimiting the disposable pant in that area that is intended to surround the legs of a user.
• the pant blank comprises a front part and a back part and a central part extending therebetween, which parts correspond to the front portion, the back portion and the central portion of the final disposable pant.
• the process for manufacturing the disposable pant comprises the steps of
• the pant blanks constitute the starting material when forming the disposable pants.
• the web may comprise one single layer of one material or a number of layers of the same or different materials, and dependent on the web feature the pant blanks form different kinds of disposable pant.
• absorbent bodies may be placed on the web which gives the possibility to manufacture disposable absorbent pants or pant diapers.
• the pant blanks along the web may be described as having a first distance defining the length of a first back part on every first blank along the first end edge, and a second distance defining the length of a first front part on every first blank along the second end edge, and a third distance defining the length of a second front part on every second blank along the first end edge, and a fourth distance defining the length of a second back part on every second blank along the second end edge.
• the process for manufacturing a disposable pant according to the invention is furthermore characterised in that the web is cut in such way that the value of the first distance divided by the second distance and the value of the fourth distance divided by the third distance is in the range of 1.8-5.7.
• a seam will unavoidably appear in the area where the back portion is joined to the front portion.
• the length of the back part and the length of the front part along the production line is the same, i.e. the pant blanks lie next to each other, resulting in a seam on the disposable pant that is situated over the hip, at the side of the user.
• the back portion of the disposable pant will be wider than the front portion and the seam between the back portion and the front portion will, thus, be displaced towards the front of the disposable pant when in use.
• first cut-out portions of the web are cut out from the web along first portion cutting lines and a number of second cut-out portions of the web are cut out from the web along second portion cutting lines.
• the first and second cut-out portions are arranged at predetermined distances from each other in the longitudinal direction of the web and are preferably cut in such way that they form the side edges of the final product, i.e. the disposable pant.
• the cut-out portions may be identical or different from each other, depending on the desired features of the disposable pant.
• the portion cutting lines respectively need not be one single cutting line, but may be a number of cutting lines that are connected.
• Such connected cutting lines may be straight or curved and at least one such cutting line may extend over an imaginary longitudinal centre line, for example in a straight line crossing the longitudinal centre line and being perpendicular to the longitudinal centre line or at another suitable angle.
• the web is cut along first cutting lines, which first cutting lines each extend from the first end edge to a first point on the first portion cutting line.
• the web is also cut along second cutting lines, which second cutting lines each extend from the first end edge to a second point on the second portion cutting line.
• the web is also cut along third cutting lines, which third cutting lines each extend from the second end edge to a third point on the first portion cutting line.
• the web is also cut along fourth cutting lines, which fourth cutting lines each extend from the second end edge to a fourth point on the second portion cutting line.
• the web does not have to be cut along the cutting lines in any specific order, but the web may be cut along any one or all of the first, second, third and fourth cutting lines simultaneously with a part of or the entire first and second portion cutting lines. Hence, one or all of the first, second, third and fourth cutting lines may coincide with at least a part of the portion cutting lines.
• the first, second, third and fourth cutting lines may be straight or curved, or may comprise both straight and curved segments.
• the cutting lines may be perpendicular to the end edges of the web or at a different angle to the end edges of the web.
• overlapping manner refers to when an outside of one sheet is placed against the inside of another sheet, or vice versa.
• the inside of the back portion is placed over the outside of the front portion, or vice versa.
• the overlapping parts are defined by predetermined distances from the first cutting line to the third cutting line and the second cutting line to the fourth cutting line in the overlapping parts, i.e. the overlapping parts will be those parts of the pant blank that constitute the distance between the first cutting line and the third cutting line when the back part is folded over the front part.
• the first cutting line is lying over the first front part and the second cutting line is lying over the first front part.
• the third cutting line is lying over the second front part and the fourth cutting line is lying over the first front part.
• a disposable pant in accordance with the invention, where the front part is overlapping the back part.
• the front part may be either reclosably or permanently attached to the back part in an overlapping manner.
• the overlapping parts may be equipped with hook and loop materials or any other suitable reclosable means. If the overlapping parts are to be attached permanently, a seam may be applied in order to secure the overlapping parts against each other.
• the seam may be the result of a sealing operation including welding, hotmelting, ultrasound, gluing, or any other suitable method.
• the seam that is openable may help to keep the pant together when a user is putting the pant on. Such a seam may be placed on the inside of the reclosable fastening means.
• the folding of the pant blank is preferably done over a roller that includes a folding mechanism, for example gripping means in the very corners of the pant blank and a dolly or holding tool that the pant blank can be folded over.
• a folding mechanism for example gripping means in the very corners of the pant blank and a dolly or holding tool that the pant blank can be folded over.
• one other important feature of the invention is that, due to the first distance being greater than the second distance and the fourth distance being greater than the third distance, the overlapping parts will be displaced towards the front portion, i.e. any seams or reclosable parts will be displaced towards the front portion of the disposable pant.
• the displacement of the overlapping parts towards the front part increases the comfort for the user, since the front part is less exposed to pressure from outer clothing, and thereby less likely to cause the user discomfort.
• it is easier to handle a reclosable diaper when the overlapping parts are placed at the front portion because children tend to be handled lying on there backs, and grown up using a disposable pant can more easy handle overlapping parts on the front part than on the sides.
• the cut-out portions and the pant blanks are advantageously cut in such way that every first and second pant blanks achieve similar/identical shapes.
• the first and second cut-out portions may, for example, each have a shape describing two opposing half circles with two parallel lines connecting the half circles.
• the cut-out portions may each have an oval shape, rectangular shape, square shape, or any other suitable shape for a leg opening thereby giving the desired feature of the disposable pant with different shapes of the side edges of the disposable pant.
• absorbent bodies are placed along the web with a fifth predetermined distance between the absorbent bodies.
• the disposable absorbent pant may of course be equipped with a number of different absorbent layers and a number of other layers such as liquid distributing layers as well as layers especially suitable to be placed against the skin of a user, for example a liquid-permeable and skin friendly material such as nonwoven.
• the absorbent bodies do not have to be placed on the web before the cutting but may be placed in or on each of the pant blanks at any time during the manufacturing process.
• the absorbent bodies may be placed in the pant blanks just before the folding of the pant blanks.
• the absorbent bodies are in the form of a unit that can be applied on that side of the disposable pant that faces the user during use.
• Such an absorbent unit may comprise a liquid-impervious layer, a liquid-pervious layer and one or more absorbent layers therebetween.
• the absorbent unit may also be equipped with fastening means on that side of the liquid-impervious layer that lies adjacent the disposable pant, in order to keep the absorbent unit in place in the disposable pant.
• the disposable unit may also or only comprise fastening means on that part of the liquid-permeable layer that lies adjacent the skin of a user during use, in order to keep the absorbent unit in place against the body of the user.
• the latter fastening means may comprise different kinds of skin care products such as ointment, lotion, or the like.
• the absorbent unit may also be equipped with any type of conventional liquid retaining devices, such as standing gathers, side barriers, leg elastics, humps, and superabsorbent materials.
• the disposable pant i.e. the web
• the web may be of any suitable material.
• the absorbent unit has a liquid-impervious layer and a liquid retaining system
• the web making up the pant may be of a suitable breathable material
• the absorbent unit lacks a liquid-impervious layer
• the web may be of any suitable liquid- impermeable material.
• the absorbent units may also be placed on the web or between layers of the web during the manufacturing process.
• a disposable pant having absorbent features, or other features is to form the web in such way that it comprises all, or some, of the materials that correspond to the desired features of the final product, already when the web is fed into the process.
• the web may comprise a liquid impervious layer, a liquid pervious layer and an absorbent body therebetween.
• elastic means may be applied on the web. It is previously known to use elastic means when forming a disposable pant, for example when forming leg elastics, liquid barriers, humps and waist elastics.
• One advantage with the present invention is that the forming of the pant blanks correspond to the shape of the final disposable pants, which offers unique possibilities to apply elastics to the web in any desired pattern.
• the disposable pant is assembled from at least two parts that are bonded together in the central portion. Such a construction limits the way in which elastic elements can be arranged along the leg openings or the waist opening of the pant or pant diaper.
• the elastic may thus be applied or arranged in a number of different patterns, e.g.
• anti-phase is meant that two elastic means starts from starting points on opposing sides of a centre line running in the longitudinal direction of the product web and run in opposing patterns along the web.
• the elastics may be applied to the web in such a way that the different elastic means cross each other in a small loop in the central portion, or does not cross at all, or in such way that the elastics run from one side of the web to the other.
• Elastics may also be applied to the back part forming waist elastics and/or to the front part forming waist elastics and/or on the parts that form the side portions or leg openings of the final product.
• the invention also refers to a product manufactured by the process according to the above.
• Figure 1 shows a web on a production line according to the invention.
• FIG. 2 shows an outlined flowchart of the process.
• Figure 3 shows a disposable pant according to the invention.
• Fig. 1 shows a web 1 on a production line according to the invention, in a process for manufacturing a disposable pant 2 (see fig. 3), for example pant diapers.
• the process is intended for use in manufacturing a disposable pant 2 comprising a front portion 3 and a back portion 4 and a central portion 5 extending therebetween, which central portion 3 extends in the crotch area of a user during use.
• the disposable pant also comprises two side portions 6 extending between the front portion 3 and the back portion 4 over the waist sides of a user when in use.
• FIG. 2 shows one embodiment of the invention, where the process for manufacturing the disposable pant 2 comprises the steps of (see figure 2):
• the web may be of any material or mix of materials suitable for the purpose, e.g. a liquid-impervious material suitable for making up the outside of a disposable pant or disposable pant diaper.
• a liquid-impervious material suitable for making up the outside of a disposable pant or disposable pant diaper.
• the web may comprise a liquid impervious layer and a liquid pervious layer and one or several absorption layers arranged therebetween.
• it is possible to use a liquid-pervious material for the web 1 and to place on the web an absorbent unit formed by a liquid-impervious layer and a liquid-pervious layer, and an absorbent body arranged therebetween.
• first and second cut-out portions 9', 9" of the web 1 from the web 1 along first and second portion cutting lines 10', 10", which cut-out portions are arranged at a predetermined portion distance 11 from each other.
• the portion distance 11 is advantageously the distance between side edges 12 of the central portion 5 of the disposable pant 2, which side edges 12 delimits the width of the central portion 5 of the disposable pant 2 in its unfolded position.
• the first and second side edges 10', 10" each describe the part of the disposable pant that is intended to be leg openings.
• the first, second, third, and fourth cutting lines 13, 14, 15, 16 are shown as being at an angle to the end edges 7, 8 of the web 1 , but the cutting lines 13, 14, 15, 16 may be perpendicular to the end edges 7, 8.
• the first and second cutting lines 13, 14 recur in a pattern along the longitudinally extending first end edge 7 with a first cutting line 13 arranged at a predetermined first distance 21 to a second cutting line 14, and the first cutting line 13 arranged at a predetermined third distance 23 to another second cutting line 14, with the first distance 21 being greater than the third distance 23.
• the third and fourth cutting lines 15, 16 recur in a pattern along the longitudinally extending second end edge 8 with a third cutting line 15 arranged at a predetermined second distance 22 to a fourth cutting line 16, and the third cutting line 15 arranged at a predetermined fourth distance 24 to another fourth cutting line 16, with the fourth distance 24 being greater than the second distance 22. Furthermore, the first distance 21 is greater than the second distance 22, and the fourth distance 24 is greater than the third distance 23.
• pant blanks 25, 26 means the disposable pants 2 before forming any side panels, and which disposable pant is in an unfolded fully planar state.
• the first pant blank 25 has a first front part 27, a first back part 28 and a first central part 29, which parts 27, 28, 29 correspond to the front portion 3, back 4 portion and the central portion 5 of the finished disposable pant 2.
• the second pant blank 26 has a second front part 36, a second back part 37 and a second central part 38, which parts 36, 37, 38 correspond to the front portion 3, back 4 portion and the central portion 5 of the final disposable pant 2.
• overlapping parts 30 are defined by predetermined distances from the first cutting line 13 to the third cutting line 15 and the second cutting line 14 to the fourth cutting line 16 in the overlapping parts, i.e. the overlapping parts 30 will be those parts of the first pant blank 25 that constitute the distance between the first cutting line 13 and the third cutting line 15 when the first back part 28 is folded over the first front part 27 such that the first cutting line 13 is lying over the front part, and vice versa for the second cutting line.
• the first back part 28 folded over the first front part 27 forms the side portions 6 of the final disposable pant, i.e. the side portions 6 mainly consists of parts of the first back part 28 but also parts of the first front part 27, depending on the first and second distances 21 , 22.
• the second pant blank 26 is folded in a corresponding way as the first pant blank 25. e) Joining folded pant blank 25, 26 in the overlapping parts, either by a reclosable material or by a permanent seam.
• the above described process for manufacturing of a disposable pant 2 can more easily be described as continuously cutting a number of first and second pant blanks 25, 26 from a web 1 in such way that every second pant blank lies parallel with but with an opposite orientation to every first pant blank along the longitudinal direction of the web 1 , i.e. a first pant blank 25 lies parallel to and turned in an opposite direction to a neighbouring second pant blank.
• the first distance 21 marks the length in the travelling direction of the web 1 , of a first back part 28 on every first pant blank, and the fourth distance 24 marks the length of a second back part 37 on every second pant blank.
• the second distance 22 marks the length of a first front part 27 on every first pant blank, and the third distance 23 marks the length of a second front part 36 on every second opposing pant blank.
• the first back part 28 are bonded to the first front part 27 in the overlapping parts 30.
• the first back part 28 bonded to the first front part 27 form the side portions 6 in the disposable pant.
• the side portions 6 are defined by that area of the disposable pant that during use extends over the waist sides of a user, i.e. between a front panel 31 in the front portion 3 and a back panel 32 in the back portion 4 in the disposable pant 2.
• the second pant blank 26 is preferably folded and bonded in a corresponding way as the first pant blank 25, but may be folded and bonded in another way.
• the first pant blank 25 may be folded and bonded with reclosable means while the second pant blank may be folded and bonded with a permanent seam.
• the overlapping parts may be equipped with hook and loop materials or any other suitable reclosable means. If the overlapping parts are to be attached permanently, a seam may be applied in order to secure the overlapping parts against each other.
• the seam may be the result of an operation such as welding, hotmelting, ultrasound, gluing, stitching, or any other suitable method.
• There may also be a combination of a seam that is possible to tear up and a reclosable part with reclosable fastening means. The seam that is possible to tear up may help to keep the pant together when a user is putting the pant on. Such a seam may be placed on the inside of the reclosable fastening means.
• the bonding area in the overlapping part 30 in the side portions 6 will be displaced towards the front panel 31 , which is a great advantage compared to having side portions with bonding areas at the waist sides of a user, which is common in prior art.
• the disposable pant according to the invention has been described as having overlapping bonding areas, but it is also possible to bond the back part to the front part by non-overlapping means, i.e. the inside of the back part is bonded to the inside of the front part.
• the disposable pant can be made from one single web without using e.g. elastics in the front portion in order to draw the overlapping parts 30, i.e. the bonding areas, towards the front portion.
• the use of one single web, i.e. one pant blank forming a disposable pant also eliminates a bonding area in the central part of the disposable pant. Such centrally located bonding area is common in prior art and is known to cause irritation and discomfort for a user in the crotch area.
• the first and third cutting lines 13, 15 are advantageously mirror images of the second and fourth cutting lines respectively over a transverse imaginary centre line 40, which is shown in fig. 1.
• the cut-out portions 9 are advantageously symmetrically aligned with a longitudinal centre line 41 , see fig. 1 , but may of course be cut from the web in another pattern dependent on the desired features of the final product.
• the symmetrically cut pant blanks described above advantageously yields a number of first and second pant blanks that have the same shape, but the cutting line and the cutting portions may be cut in such way that the first and second pant blank have different shapes.
• the process is used for manufacturing a disposable pant diaper, see fig. 1 , where absorbent bodies 33 are placed along the web with a predetermined fifth distance 34 between the absorbent bodies.
• the absorbent bodies may be placed before the cutting, during the cutting or after the cutting of the web, dependent on the process.
• One example may be that the absorbent bodies 33 are placed on a layer consisting of a liquid impermeable material, after which a liquid permeable layer is placed over the absorbent bodies, which layers and absorbent bodies form the web.
• the absorbent bodies each may be in any suitable shape, for example a rectangular shape or, as is shown in fig. 1 , an hourglass shape.
• elastic means 35 are applied to the web on the back parts, front parts and on either side of each of the cutout portions 9', 9" partly along the end edges 7, 8 and also in the central parts 29, 38 along the side edges 12.
• the elastic means 35 that are placed on either side of the cut-out portions 9', 9", and along the side edges 12 form leg elastics around the legs of a user during use.
• the first elastic means 35 cross each other in a small loop in the central portion 29, 38 on every pant blank 25, 26.
• the elastic means may be made inactive by cutting the elastic means, a so called snap back procedure.
• the elastic means are applied as described as above with the exception that the elastic means do not cross in the central portion but two loops lie close to each other in the central portion of every pant blank.
• the elastic means may also be applied to the web as described as above but in a pattern where the elastic means cross each other somewhere along the side edges and where the two loops are placed in the front part and the back part respectively on every pant blank such that there will be no elastic means in the central portions.
• the elastic means may form leg elastics such as raised barriers also known as standing gathers, or side barriers, or other suitable liquid retaining means.
• the elastic means are advantageously placed along the edges of the cut out portions (e.g. along the portion cutting lines 10', 10" or part of the portion cutting lines 10', 10" e.g. the side edges 12) that form the part of the pant diapers that is intended to surround at least parts of the legs of a user. It is also possible to add separate leg elastics in the central portions 5, for example in the form of cuffs.
• elastic means may be applied to the pant blanks such that the elastic means follow the portion cut out lines that lie essentially parallel to the end edges and which elastic means crosses the front parts and back parts respectively on the pant blanks.
• the elastic means 35 may be placed in a number of different patterns, e.g. anti-phase zigzag pattern or anti-phase sinusoidal form.
• anti-phase is meant that two elastic means starts from opposing starting points.
• the elastic means may be applied to the web in such a way that the two different elastic means cross each other in the central portion where the elastic means run from one side 7, 8 of the web 1 to the other between the cut-out portions 9', 9", i.e. in the central parts 29, 38.
• the elastic means may also be applied in different forms on the back part forming waist elastics and/or on the front part forming waist elastics and/or on the parts that form the side portions of the final product. It is also possible to combine the application of separate leg elastics with separate waist elastics 39 (fig. 1 ).
• the waist elastics is advantageously of such kind that the elastic means contract the pant blank in the feeding direction of the web, and the leg elastics contract the finished product in a direction around the legs of a user, i.e. along the side edges. It is also possible to combine all of the above mentioned methods for applying elastic means.
• the elastic means may advantageously have different features on different places in the disposable pant, e.g. different tension and/or may be of different elastic materials or of different composition.
• the elastic means 35 intended for leg elastics are advantageously of a thread type laid out in a curved pattern according to any conventional method and may be of an all-elastic material, but may also comprise a sheet, for example a nonwoven with elastic threads or strips with suitable elasticity, applied in suitable places along the sheet. Such strips or sheets are advantageously used when placing waist elastics 39 preferably along the feeding direction of the web.
• the sheet may be a fabric or a nonwoven or any other suitable material.
• the elastics may also be applied on a separate web sheet, which web sheet will be applied on the web 1. If a liquid permeable top sheet has been applied to the pant blanks over the absorbent bodies, it is also possible to apply elastic means forming side barriers on the top sheet.
• the cutting may, for example, be made by running the web through a pair of rollers with cutting tools.
• the folding of the pant blanks may be done by using a roller equipped with suction devices that are intended to hold the very corners of the pant blanks when the pant blanks are folded by, for example, mechanical arms.
• the joining of the back part to the front part may be done by letting the web pass through a pair of rollers equipped with, for instance, welding tools or gluing tools, and a dolly that separates the back part from the front part leaving only the bonding area to be bonded.

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

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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Citations (5)

• 2002
  • 2002-03-08 SE SE0200701A patent/SE0200701D0/sv unknown
• 2003
  • 2003-03-06 EP EP03708778A patent/EP1482885A1/en not_active Withdrawn
  • 2003-03-06 WO PCT/SE2003/000374 patent/WO2003075814A1/en active Application Filing
  • 2003-03-06 JP JP2003574091A patent/JP2005519675A/ja active Pending
  • 2003-03-06 AU AU2003212749A patent/AU2003212749A1/en not_active Abandoned

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