US20200229987A1 - Disposable Absorbent Garment With Improved Elastication - Google Patents
Disposable Absorbent Garment With Improved Elastication Download PDFInfo
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- US20200229987A1 US20200229987A1 US16/843,007 US202016843007A US2020229987A1 US 20200229987 A1 US20200229987 A1 US 20200229987A1 US 202016843007 A US202016843007 A US 202016843007A US 2020229987 A1 US2020229987 A1 US 2020229987A1
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- elasticized
- panel
- disposable absorbent
- absorbent garment
- area
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Images
Classifications
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- 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
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
-
- 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
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
Definitions
- the present invention relates generally to disposable absorbent garments with zones of elastication and non-elastication in the abdomen and rear regions of the garments.
- Disposable absorbent garments contemplated by the invention include disposable diapers, disposable pull-on garments, and the like. These garments are worn about the lower torso or waist of the user so as to receive and contain urine and other bodily wastes. More preferably, disposable pull-on garments include training pants, pull-on diapers, protective underwear, and adult incontinence garments. Generally, the disposable absorbent garments are designed to be put on and taken off in the same manner by which regular underpants are put on and taken off.
- the disposable absorbent garments include zones of elastication and non-elastication in the front and rear panels.
- the elasticated and non-elasticated regions work in tandem to provide greater contour support and improved fit.
- the zones of elastication work to mimic the contoured fit of regular underpants.
- a disposable absorbent garment having a front panel, a rear panel, and a crotch panel.
- the garment may include a longitudinally-extending, preferably elasticized, leg cuff spaced in generally parallel relation from each lateral side of the core.
- the leg cuffs may include an outer material, section or layer that is formed from the topsheet (e.g., topsheet side or outer section) and an inner material, and/or a section or layer that is substantially impervious.
- a disposable absorbent garment comprises a front panel, a rear panel, and a crotch panel that connects the front and rear panels.
- Each front and rear panel has two side edges, a waist edge end, and a crotch edge.
- the crotch edges are curved at the sides to form leg openings.
- the crotch edges are linear.
- the crotch panel comprises an absorbent core and connects the front panel with the rear panel.
- the crotch panel comprises crotch elastics laterally outboard of the absorbent core.
- the crotch panel may comprise a multi-component absorbent core.
- a crotch panel may comprise an acquisition layer, a distribution layer, a surge core, a storage core, one or more layers of tissue, a tissue wrap, and combinations thereof.
- a disposable absorbent garment comprises multiple elasticated areas.
- Elasticated areas may include the waist, abdomen, buttocks, leg openings, and crotch area. Elasticated areas may result from the inclusion of elastic strands, elastic film, or other elasticizing means known in the art.
- the waist elastics may comprise elastic strands that span along the entirety of the waist edges of the front and/or rear waist panels.
- the crotch elastics comprise elastic strands which span along the longitudinally-extending, laterally outboard edges of the crotch panel. In some embodiments, the crotch elastics travel the entire longitudinal length of the crotch panel. In other embodiments, the crotch elastics travel a portion of the longitudinal length of the crotch panel.
- leg elastics comprise elastics that curve along the crotch edges of the front and rear waist panels. In some embodiments, the leg elastics begin at the panel side edges and extend laterally inwardly. In other embodiments, the leg elastics are located inward of the panel side edges. Leg elastics may travel across the entire width of the front and/or rear panels. In some embodiments, leg elastics do not travel over the crotch panel. In some embodiments, leg elastics are de-elasticized over all or a portion of the crotch panel. In some embodiments, leg elastics are relaxed over all or a portion of the crotch panel, particularly along the end regions of the crotch panel.
- leg elastics travel over the absorbent core or, again, along the end regions of the crotch panel. In other embodiments, leg elastics do not travel over the absorbent core. In further embodiments, leg elastics are de-elasticized over the absorbent core. In some embodiments, the leg elastics run parallel to each other in a generally straight or curved manner, and do not come together, nor do they flare away from each other.
- the disposable absorbent garments comprise regions of elastication or non-elastication, or zones of elastication in the abdomen and the rear or buttocks regions of the front and rear panels between the waist edge and the crotch edge of the garment.
- the regions comprise multiple elasticized regions, with the elastication of these regions resulting from the inclusion of elastic strands, elastic film, or other elasticizing means known in the art.
- panel region is used herein to refer to either or both of the front, abdomen region and/or the rear, buttocks region of the garment between the waist edge and the crotch edge.
- the phrase “elastics” is used herein to refer to any of the numerous means of known elastication.
- the panel elastication can assume a variety of configurations presenting multiple elasticized panel zones.
- the panel elastics travel over the crotch panel or the ends thereof. In other embodiments, panel elastics do not travel over the crotch panel. In further embodiments, panel elastics are de-elastified over the crotch panel. In some embodiments, panel elastics are relaxed over the crotch panel.
- the panel elasticated zones comprise regions of elastication and zones of de-elasticated or non-elasticated regions.
- the elasticated zones may be included in either or both of the front and rear panels of a disposable absorbent garment.
- a disposable absorbent garment panel comprises a region of de-elastication, or a non-elasticated region, at either one or both of the longitudinal ends.
- a region of de-elastication or a non-elasticated region runs along the entire width of the front and/or rear panel.
- a region of de-elastication or a non-elasticated region runs along a fraction of front and/or rear panel width.
- a region of de-elastication or a non-elasticated region is continuous. In other embodiments, a region of de-elastication or a non-elasticated region is discontinuous and comprises both de-elasticated or non-elasticated regions and elasticated regions. A region of de-elastication or non-elasticated region may be positioned just inward of a waist region. In some embodiments, a waist region may comprise waist elastics which are different from the remaining elastics. In other embodiments, a waist region may comprise waist elastics which are the same or essentially the same as the remaining elastics.
- regions of de-elastication or non-elasticated regions along the panel width are substantially rectangular regions whose longitudinal dimension is less than its lateral dimension.
- regions of de-elastication or non-elasticated regions along the panel width comprise non-rectangular shapes, including one or more lines, angled shapes, curved shapes, or irregular shapes.
- a disposable absorbent garment comprises regions of de-elastication or non-elasticated regions at the side edges of the front and/or rear panels.
- the regions of de-elastication or non-elasticated regions may run along a substantial portion of the length of the side edges, and in other embodiments, the regions constitute only a minor length of the side edge length.
- Regions of de-elastication or non-elasticated regions preferably are intermittent along the side edges.
- regions of de-elastication or non-elasticated regions lie inward of side edge seams.
- regions of de-elastication or non-elasticated regions along the side edges are substantially rectangular regions whose longitudinal dimension is larger than a lateral dimension.
- regions of de-elastication or non-elasticated regions along the side edges comprise non-rectangular shapes, including one or more lines, angled shapes, curved shapes, or irregular shapes.
- a region of de-elastication or a non-elasticated region running along the entire width of the front and/or rear panel may be located inboard of front and/or rear panel longitudinal edges.
- the de-elastication or a non-elasticated regions present a gap in elastication of the panel elastics.
- a region of panel elastics may be followed by a de-elasticated or non-elasticated region, which is then followed by an elasticated region.
- a region of de-elastication or a non-elasticated region located inboard of front and/or rear panel longitudinal edges extends along a fraction of front and/or rear panel width.
- a region of de-elastication or a non-elasticated region located inboard of front and/or rear panel longitudinal edges is continuous. In other embodiments, a region of de-elastication or a non-elasticated region located inboard of front and/or rear panel longitudinal edges is discontinuous and comprises both de-elasticated or non-elasticated regions and elasticated regions, for example, a dotted-line pattern. In preferred embodiments, regions of de-elastication or non-elasticated regions located inboard of front and/or rear panel longitudinal edges travel along the panel width and are substantially rectangular regions whose longitudinal dimension is less than a lateral dimension.
- regions of de-elastication or non-elasticated regions located inboard of front and/or rear panel longitudinal edges travel along the panel width comprise non-rectangular shapes, including one or more lines, angled shapes, curved shapes, or irregular shapes.
- FIG. 1 is a top plan view of a disposable absorbent garment with laterally-extending non-elasticized or de-elasticized regions positioned inward of waist elasticized zones.
- FIG. 2 is a top plan view of a disposable absorbent garment with vertical or longitudinal non-elasticized or de-elasticized regions inward of front and rear side edges and inward of side seams or edges.
- FIG. 3 is a top plan view of a disposable absorbent garment with laterally-extending non-elasticized or de-elasticized regions within front and rear panel elasticized areas.
- FIG. 1 depicts the disposable absorbent garment 10 in a flat and unfolded configuration, which it assumes during one point in the manufacturing process when it is stretched in both the lateral and longitudinal directions.
- the disposable absorbent garment 10 may be subsequently trimmed, folded, sealed, welded and/or otherwise manipulated to form a disposable absorbent garment 10 in final form and for packaging.
- the disposable absorbent garment 10 is referred to as being finishable to form a final disposable absorbent garment product.
- the garment 110 features a front panel 112 comprising front waist edge 130 and a rear panel 114 comprising rear waist edge 132 .
- Crotch panel 124 connects front panel 112 and rear panel 114 .
- the front panel, rear panel and crotch panels are preferably formed by joining two non-woven sheets, commonly referred to as a topsheet nonwoven, which faces the user and a backsheet nonwoven, which faces away from the user and faces the user's garment.
- the crotch panel includes an absorbent body positioned between the topsheet and backsheet as will be described in more detail below.
- Front panel 112 and rear panel 114 comprise front and back panel regions 120 and 122 , respectively.
- Front panel region 120 abuts front waist edge 130 , and comprises a portion of front panel 112 .
- Rear panel region 122 abuts rear waist edge 132 and comprises a portion of rear panel 114 .
- Front panel 112 comprises transversely opposite front side edges 126 a and 126 b .
- Rear panel 114 comprises transversely opposite rear side edges 128 a and 128 b .
- front and rear side edges 126 a and 128 a and front and rear side edges 126 b and 128 b are bonded together to form a three-dimensional absorbent garment comprising a waist opening and two leg openings.
- front and rear side edges 126 a and 128 a and front and rear side edges 126 b and 128 b are bonded together to create side seams 134 . Bonding of front and rear side edges may be accomplished by any means known in the art.
- transversely extending leg elastics 148 are positioned proximately to each crotch edge of front and rear panels 112 and 114 .
- leg elastics 148 work in conjunction with each other and encircle the legs of the user and effects a seal thereon to prevent leakage.
- leg elastics 148 are formed with elastic members which are typically applied in the stretched or extended condition and are placed between the topsheet and backsheet. The elastic members are glued or otherwise secured to one or both of the topsheet or backsheet or other material layer of absorbent garment 110 . Upon release from a stretched state, the elastic members retract with the attached material layer and form gathered leg regions surrounding leg openings of the final absorbent garment product.
- the disposable absorbent garment 110 may also be equipped with waist elastics 144 .
- Waist elastics may be inserted between the topsheet and backsheet of each of the front and rear panels 112 and 114 .
- the waist elastics 144 may be omitted.
- the topsheet when the garment 110 is properly worn about the waist region of the user, the topsheet generally contacts the user, while the backsheet faces outwardly from the body of the user. Further, the front waist region 120 of the garment 110 is situated at the front waist area of the user and the back waist region 122 is situated at the back waist area of the user, while the crotch region 124 is situated between the legs of the user and at the crotch area.
- each of the terms “backsheet,” “backsheet assembly” or “outer layer of the garment” refers to any sheet, layer or composite that is on the garment side of the undergarment and covers the core 136 , and extends longitudinally beyond the core 136 toward the front and rear waist edges 130 and 132 and to side edges 126 a , 126 b , 128 a , and 128 b .
- the term “backsheet,” “backsheet assembly” or “outer layer of the garment” may refer to any assembly, unitary or integrally, of sheets, layers, or composites applied at least over the core 136 and any part, portion, region or section thereof.
- the backsheet and film material may be referred to as one structure or as individual structures or layers.
- the backsheet may comprise three individual backsheets, one for each of front, rear, and crotch panels 112 , 114 , and 124 .
- a unitary backsheet may be disposed on the back surfaces of front, rear, and crotch panels 112 , 114 , and 124 .
- the backsheet may be constructed from a number of different suitable materials and, preferably, may have a breathable or vapor-permeable attribute (distinguishing it from liquid-permeable) so that air can pass therethrough.
- the garment 10 may be equipped with a “nonwoven-poly assembly” comprising a nonwoven material of a hydrophobic, vapor-permeable material and a polyolefin film mask or film barrier that is laminated or otherwise applied onto the nonwoven material.
- the film barrier may or may not be vapor-permeable.
- the film barrier may be applied as a mask or sheet in a central area of garment 110 .
- the film barrier has an overall width that is less than the width of the other nonwoven materials but is sufficiently wide to cover the absorbent core.
- One suitable construction for the backsheet assembly includes an outer layer of spunbond polypropylene fiber with a basis weight of about 15 gsm (available from BBA Nonwovens of Simpsonville, S.C.) and a polyethylene film of about 0.5 mil (0.0005′′) thickness adhesively laminated to the outer layer.
- a polyethylene film is available from, and manufactured by Exxon Chemical USA of Houston, Tex. The film may be laminated using adhesive available from National Starch & Chemical Company of Bridgewater, N.J.
- Yet another suitable construction for the backsheet 118 includes a web of spunbond or SMS (spunbond ⁇ meltblown ⁇ spunbond) nonwoven material and breathable or non-breathable films of 0.5 mils to 2.0 mils in thickness.
- the absorbent core 136 is generally elongated and rectangular in shape. As best shown in FIG. 1 , the core 136 is generally centered about the longitudinal and lateral axes of the garment 110 .
- the core 136 is preferably made of an absorbent composition adapted to absorb bodily liquids received through the topsheet.
- the absorbent composition includes a fluffed wood pulp component for wicking and structural integrity and a high absorbency material (or super absorbent) for containing liquids.
- the garment 110 is equally adapted to utilize absorbent cores of varying shapes and compositions, as well as other types of cores known in the art.
- topsheet may refer to any sheet, layer or composite that covers the core 136 and extends beyond the core 136 toward front and rear longitudinal edges 130 and 132 and towards side edges 126 a , 126 b , 128 a , and 128 b .
- topsheet topsheet assembly or “inner layer of the garment” refers to any assembly, unitary or integrally, of sheets, layers, or composites applied over the core 136 and any part, portion, region or section thereof.
- the topsheet may be referred to as one structure or as individual structures or layers.
- the topsheet may comprise three individual topsheets, one for each of front, rear, and crotch panels 112 , 114 , and 124 .
- a unitary topsheet may be disposed on the front or wearer-facing surfaces of front, rear, and crotch panels 112 , 114 , and 124 .
- the topsheet may be constructed from a wide range of suitable materials including nonwoven webs of natural fibers (e.g., wood or cotton) or synthetic fibers (e.g., polypropylene or polyester), a combination of such webs or fibers, or apertured film.
- One suitable topsheet material is a 15 gsm spunbond polypropylene from Avgol Nonwoven Fabrics of Holon, Israel.
- the topsheet may be treated with a surfactant to facilitate liquid transfer, especially at a central zone of the topsheet over the core 136 , and an inner surface of the topsheet may be treated with a chemical to increase the surface tension of liquid passing through the material.
- the topsheet may comprise three topsheets, corresponding to a topsheet for each of front, rear and crotch panels 112 , 114 , and 124 .
- Leg cuffs may be positioned on either side of or spaced from a longitudinal center axis and laterally outboard of the core 136 . These cuffs may extend generally upwardly from the topsheet (i.e., toward the user). The longitudinal ends of the cuffs may be attached, for example, to the topsheet in the front and rear panels 112 and 114 . The ends of the leg cuffs may be tacked down inwardly and attached, for example, by adhesive. Such a construction biases the cuffs inwardly and is generally considered to cause the cuffs to exhibit improved leakage prevention properties.
- the leg cuffs may be formed by a number of alternative methods known in the art.
- One method involves gluing a separately constructed leg cuff or cuff section to the top surface of the garment.
- Another method requires forming the leg cuff or cuff section from the topsheet or the backsheet.
- Yet another method involves creating and folding noodle cuffs as disclosed in U.S. Pat. No. 5,536,350, which is hereby incorporated by reference.
- disposable absorbent garment 110 comprises multiple elasticated areas.
- Elasticated areas include the front and rear waist sections 120 and 122 , panel elastics 154 , leg elastics 148 , and crotch elastics 146 .
- the elastics depicted in the figures are elastic strands, however, other elasticizing means known in the art may be employed, for example, elasticated film.
- corresponding elements in respective garments 110 , 210 , and 310 are annotated so as to include the same final two digits.
- crotch elastics are annotated as 146 in FIG. 1, 246 in FIG. 2, and 346 in FIG. 3 .
- the absorbent core is annotated as 136 in FIG. 1, 236 in FIG. 2, and 336 in FIG. 3
- the front and rear panels 112 and 114 comprise elasticated zones comprising regions of elastication 152 and non-elasticated regions 156 .
- non-elasticated and variations of the term includes zones in which no elasticizing means is added and zones in which elasticizing means exist but have been de-elasticized, for example, a zone in which elasticized film exists but where the elastication of the film has been deadened or otherwise rendered ineffective.
- the non-elasticated regions 156 are located at front and rear longitudinal ends 130 and 132 , inward of front and rear waist regions 120 and 122 .
- Non-elasticated regions 156 traverse the entire lateral width of the front and rear panels 112 and 114 .
- Non-elasticated regions 156 are continuous and are substantially rectangular in shape, with longitudinal dimensions being less than lateral dimensions.
- the front panel 212 comprises elasticated zones comprising a central region of elastication 252 and non-elasticated regions 256 at front panel 226 a and 226 b .
- the regions of non-elastication 256 travel along the entire longitudinal length of the side edges 226 a and 226 b , except for the waist regions 220 and 222 .
- Rear panel 214 comprises non-elasticated regions 256 at rear panel side edges 228 a and 228 b .
- the side edge non-elasticated regions 256 are substantially rectangular regions with longitudinal dimensions that are larger than lateral dimensions.
- the front panel 312 comprises elasticated zones comprising a central region of elastication 352 , upper elastication zones 352 , and non-elasticated regions 356 .
- the non-elasticated regions 356 travel along the entire width of the front and rear panels, and are laterally located within elasticated regions 352 .
- the non-elasticated regions 356 present a gap within elasticated regions 352 .
- a first region of waist elastics is followed by an upper zone of elastication 352 , a non-elasticated region 356 , which is then followed by a second region of panel elastics 352 .
- this pattern is repeated in the rear panel.
- front and rear panel zones of elastication follow the same elastication pattern.
- front and rear panel zones of elastication follow different patterns.
- the front panel may comprise a longitudinally-spanning non-elasticized zone and the rear panel may comprise side edge non-elasticized zones.
- only one of the front and rear panels exhibit zones of elastication and non-elastication.
- the panel elastication may assume a variety of combinations of elasticized and non-elasticized zones.
- the non-elasticized zones 156 of FIG. 1 may include intermittent, elasticized zones spaced inboard of the side edges and, likewise, the elasticized zones 152 may include intermittent, non-elasticized zones.
- the non-elasticized zones 256 of FIG. 2 may include intermittent, elasticized zones spaced inboard of the side edges and, likewise, the elasticized zones 252 may include intermittent, non-elasticized zones.
- the non-elasticized zones 356 of FIG. 3 may include intermittent, elasticized zones spaced inboard of the side edges and, likewise, the elasticized zones 352 may include intermittent, non-elasticized zones.
Abstract
Description
- This application is a divisional of U.S. patent application Ser. No. 15/278,365, filed Sep. 28, 2016, which claims priority to and the benefit of U.S. Provisional Patent Application Ser. No. 62/233,899, filed Sep. 28, 2015. The contents of the aforementioned applications are incorporated by reference in their entirety.
- The present invention relates generally to disposable absorbent garments with zones of elastication and non-elastication in the abdomen and rear regions of the garments.
- Disposable absorbent garments contemplated by the invention include disposable diapers, disposable pull-on garments, and the like. These garments are worn about the lower torso or waist of the user so as to receive and contain urine and other bodily wastes. More preferably, disposable pull-on garments include training pants, pull-on diapers, protective underwear, and adult incontinence garments. Generally, the disposable absorbent garments are designed to be put on and taken off in the same manner by which regular underpants are put on and taken off.
- The disposable absorbent garments include zones of elastication and non-elastication in the front and rear panels. The elasticated and non-elasticated regions work in tandem to provide greater contour support and improved fit. The zones of elastication work to mimic the contoured fit of regular underpants.
- It is one object of the present invention to provide an improved disposable absorbent garment such as a protective underwear or adult incontinence garment with zones of elastication and zones of non-elastication or de-elastication.
- In accordance with one aspect of the present invention, a disposable absorbent garment is provided having a front panel, a rear panel, and a crotch panel. Moreover, the garment may include a longitudinally-extending, preferably elasticized, leg cuff spaced in generally parallel relation from each lateral side of the core. The leg cuffs may include an outer material, section or layer that is formed from the topsheet (e.g., topsheet side or outer section) and an inner material, and/or a section or layer that is substantially impervious.
- In some embodiments, a disposable absorbent garment comprises a front panel, a rear panel, and a crotch panel that connects the front and rear panels. Each front and rear panel has two side edges, a waist edge end, and a crotch edge. In some embodiments, the crotch edges are curved at the sides to form leg openings. In other embodiments, the crotch edges are linear. The crotch panel comprises an absorbent core and connects the front panel with the rear panel. In some embodiments, the crotch panel comprises crotch elastics laterally outboard of the absorbent core. The crotch panel may comprise a multi-component absorbent core. In some embodiments, a crotch panel may comprise an acquisition layer, a distribution layer, a surge core, a storage core, one or more layers of tissue, a tissue wrap, and combinations thereof.
- In some embodiments, a disposable absorbent garment comprises multiple elasticated areas. Elasticated areas may include the waist, abdomen, buttocks, leg openings, and crotch area. Elasticated areas may result from the inclusion of elastic strands, elastic film, or other elasticizing means known in the art. The waist elastics may comprise elastic strands that span along the entirety of the waist edges of the front and/or rear waist panels. The crotch elastics comprise elastic strands which span along the longitudinally-extending, laterally outboard edges of the crotch panel. In some embodiments, the crotch elastics travel the entire longitudinal length of the crotch panel. In other embodiments, the crotch elastics travel a portion of the longitudinal length of the crotch panel. In some embodiments, leg elastics comprise elastics that curve along the crotch edges of the front and rear waist panels. In some embodiments, the leg elastics begin at the panel side edges and extend laterally inwardly. In other embodiments, the leg elastics are located inward of the panel side edges. Leg elastics may travel across the entire width of the front and/or rear panels. In some embodiments, leg elastics do not travel over the crotch panel. In some embodiments, leg elastics are de-elasticized over all or a portion of the crotch panel. In some embodiments, leg elastics are relaxed over all or a portion of the crotch panel, particularly along the end regions of the crotch panel. In some embodiments, leg elastics travel over the absorbent core or, again, along the end regions of the crotch panel. In other embodiments, leg elastics do not travel over the absorbent core. In further embodiments, leg elastics are de-elasticized over the absorbent core. In some embodiments, the leg elastics run parallel to each other in a generally straight or curved manner, and do not come together, nor do they flare away from each other.
- The disposable absorbent garments comprise regions of elastication or non-elastication, or zones of elastication in the abdomen and the rear or buttocks regions of the front and rear panels between the waist edge and the crotch edge of the garment. The regions comprise multiple elasticized regions, with the elastication of these regions resulting from the inclusion of elastic strands, elastic film, or other elasticizing means known in the art. The phrase “panel” region is used herein to refer to either or both of the front, abdomen region and/or the rear, buttocks region of the garment between the waist edge and the crotch edge. The phrase “elastics” is used herein to refer to any of the numerous means of known elastication. The panel elastication can assume a variety of configurations presenting multiple elasticized panel zones. In some embodiments, the panel elastics travel over the crotch panel or the ends thereof. In other embodiments, panel elastics do not travel over the crotch panel. In further embodiments, panel elastics are de-elastified over the crotch panel. In some embodiments, panel elastics are relaxed over the crotch panel.
- As noted, the panel elasticated zones comprise regions of elastication and zones of de-elasticated or non-elasticated regions. The elasticated zones may be included in either or both of the front and rear panels of a disposable absorbent garment. In some embodiments, a disposable absorbent garment panel comprises a region of de-elastication, or a non-elasticated region, at either one or both of the longitudinal ends. In some embodiments, a region of de-elastication or a non-elasticated region runs along the entire width of the front and/or rear panel. In other embodiments, a region of de-elastication or a non-elasticated region runs along a fraction of front and/or rear panel width. In some embodiments, a region of de-elastication or a non-elasticated region is continuous. In other embodiments, a region of de-elastication or a non-elasticated region is discontinuous and comprises both de-elasticated or non-elasticated regions and elasticated regions. A region of de-elastication or non-elasticated region may be positioned just inward of a waist region. In some embodiments, a waist region may comprise waist elastics which are different from the remaining elastics. In other embodiments, a waist region may comprise waist elastics which are the same or essentially the same as the remaining elastics. In preferred embodiments, regions of de-elastication or non-elasticated regions along the panel width are substantially rectangular regions whose longitudinal dimension is less than its lateral dimension. In other embodiments, regions of de-elastication or non-elasticated regions along the panel width comprise non-rectangular shapes, including one or more lines, angled shapes, curved shapes, or irregular shapes.
- In some embodiments, a disposable absorbent garment comprises regions of de-elastication or non-elasticated regions at the side edges of the front and/or rear panels. The regions of de-elastication or non-elasticated regions may run along a substantial portion of the length of the side edges, and in other embodiments, the regions constitute only a minor length of the side edge length. Regions of de-elastication or non-elasticated regions preferably are intermittent along the side edges. In some embodiments, regions of de-elastication or non-elasticated regions lie inward of side edge seams. In preferred embodiments, regions of de-elastication or non-elasticated regions along the side edges are substantially rectangular regions whose longitudinal dimension is larger than a lateral dimension. In other embodiments, regions of de-elastication or non-elasticated regions along the side edges comprise non-rectangular shapes, including one or more lines, angled shapes, curved shapes, or irregular shapes.
- In some embodiments, a region of de-elastication or a non-elasticated region running along the entire width of the front and/or rear panel may be located inboard of front and/or rear panel longitudinal edges. The de-elastication or a non-elasticated regions present a gap in elastication of the panel elastics. Along the longitudinal direction of the panels, a region of panel elastics may be followed by a de-elasticated or non-elasticated region, which is then followed by an elasticated region. In some embodiments, a region of de-elastication or a non-elasticated region located inboard of front and/or rear panel longitudinal edges extends along a fraction of front and/or rear panel width. In some embodiments, a region of de-elastication or a non-elasticated region located inboard of front and/or rear panel longitudinal edges is continuous. In other embodiments, a region of de-elastication or a non-elasticated region located inboard of front and/or rear panel longitudinal edges is discontinuous and comprises both de-elasticated or non-elasticated regions and elasticated regions, for example, a dotted-line pattern. In preferred embodiments, regions of de-elastication or non-elasticated regions located inboard of front and/or rear panel longitudinal edges travel along the panel width and are substantially rectangular regions whose longitudinal dimension is less than a lateral dimension. In other embodiments, regions of de-elastication or non-elasticated regions located inboard of front and/or rear panel longitudinal edges travel along the panel width comprise non-rectangular shapes, including one or more lines, angled shapes, curved shapes, or irregular shapes.
- The foregoing has outlined rather broadly the features and technical advantages of the embodiments of the present disclosure in order that the detailed description of these embodiments that follows may be better understood. Additional features and advantages of the embodiments of the present disclosure will be described hereinafter which form the subject of the claims of the present disclosure. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the present disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the present disclosure, both as to its organization and method of operation, together with further objects and advantages, will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.
- The following drawings illustrate by way of example and not limitation. For the sake of brevity and clarity, every feature of a given structure may not be labeled in every figure in which that structure appears.
-
FIG. 1 is a top plan view of a disposable absorbent garment with laterally-extending non-elasticized or de-elasticized regions positioned inward of waist elasticized zones. -
FIG. 2 is a top plan view of a disposable absorbent garment with vertical or longitudinal non-elasticized or de-elasticized regions inward of front and rear side edges and inward of side seams or edges. -
FIG. 3 is a top plan view of a disposable absorbent garment with laterally-extending non-elasticized or de-elasticized regions within front and rear panel elasticized areas. -
FIG. 1 depicts the disposable absorbent garment 10 in a flat and unfolded configuration, which it assumes during one point in the manufacturing process when it is stretched in both the lateral and longitudinal directions. As will be further explained below, the disposable absorbent garment 10 may be subsequently trimmed, folded, sealed, welded and/or otherwise manipulated to form a disposable absorbent garment 10 in final form and for packaging. In this regard, the disposable absorbent garment 10 is referred to as being finishable to form a final disposable absorbent garment product. - It should first be noted that, upon review of the detailed description and the drawings provided herein, it will become apparent to one of ordinary skill in the art that the present invention is also applicable to other disposable absorbent articles and, more particularly, to disposable absorbent garments other than protective underwear and adult incontinence garments.
- Referring to
FIG. 1 , thegarment 110 features afront panel 112 comprisingfront waist edge 130 and arear panel 114 comprisingrear waist edge 132.Crotch panel 124 connectsfront panel 112 andrear panel 114. The front panel, rear panel and crotch panels are preferably formed by joining two non-woven sheets, commonly referred to as a topsheet nonwoven, which faces the user and a backsheet nonwoven, which faces away from the user and faces the user's garment. The crotch panel includes an absorbent body positioned between the topsheet and backsheet as will be described in more detail below.Front panel 112 andrear panel 114 comprise front andback panel regions Front panel region 120 abutsfront waist edge 130, and comprises a portion offront panel 112.Rear panel region 122 abutsrear waist edge 132 and comprises a portion ofrear panel 114.Front panel 112 comprises transversely opposite front side edges 126 a and 126 b.Rear panel 114 comprises transversely opposite rear side edges 128 a and 128 b. In the final disposable absorbent garment product, front and rear side edges 126 a and 128 a and front and rear side edges 126 b and 128 b are bonded together to form a three-dimensional absorbent garment comprising a waist opening and two leg openings. Particularly, front and rear side edges 126 a and 128 a and front and rear side edges 126 b and 128 b are bonded together to create side seams 134. Bonding of front and rear side edges may be accomplished by any means known in the art. - In some embodiments, transversely extending
leg elastics 148 are positioned proximately to each crotch edge of front andrear panels garment 110 is properly worn by the user,leg elastics 148 work in conjunction with each other and encircle the legs of the user and effects a seal thereon to prevent leakage. Generally,leg elastics 148 are formed with elastic members which are typically applied in the stretched or extended condition and are placed between the topsheet and backsheet. The elastic members are glued or otherwise secured to one or both of the topsheet or backsheet or other material layer ofabsorbent garment 110. Upon release from a stretched state, the elastic members retract with the attached material layer and form gathered leg regions surrounding leg openings of the final absorbent garment product. - As shown in
FIG. 1 , the disposableabsorbent garment 110 may also be equipped withwaist elastics 144. Waist elastics may be inserted between the topsheet and backsheet of each of the front andrear panels - As mentioned above, when the
garment 110 is properly worn about the waist region of the user, the topsheet generally contacts the user, while the backsheet faces outwardly from the body of the user. Further, thefront waist region 120 of thegarment 110 is situated at the front waist area of the user and theback waist region 122 is situated at the back waist area of the user, while thecrotch region 124 is situated between the legs of the user and at the crotch area. - As used herein for the purpose of description, each of the terms “backsheet,” “backsheet assembly” or “outer layer of the garment” refers to any sheet, layer or composite that is on the garment side of the undergarment and covers the
core 136, and extends longitudinally beyond thecore 136 toward the front and rear waist edges 130 and 132 and to sideedges core 136 and any part, portion, region or section thereof. The backsheet and film material may be referred to as one structure or as individual structures or layers. For example, the backsheet may comprise three individual backsheets, one for each of front, rear, andcrotch panels crotch panels - The backsheet may be constructed from a number of different suitable materials and, preferably, may have a breathable or vapor-permeable attribute (distinguishing it from liquid-permeable) so that air can pass therethrough. The garment 10 may be equipped with a “nonwoven-poly assembly” comprising a nonwoven material of a hydrophobic, vapor-permeable material and a polyolefin film mask or film barrier that is laminated or otherwise applied onto the nonwoven material. In some embodiments, the film barrier may or may not be vapor-permeable. Preferably, the film barrier may be applied as a mask or sheet in a central area of
garment 110. In some embodiments, the film barrier has an overall width that is less than the width of the other nonwoven materials but is sufficiently wide to cover the absorbent core. - One suitable construction for the backsheet assembly includes an outer layer of spunbond polypropylene fiber with a basis weight of about 15 gsm (available from BBA Nonwovens of Simpsonville, S.C.) and a polyethylene film of about 0.5 mil (0.0005″) thickness adhesively laminated to the outer layer. Such a polyethylene film is available from, and manufactured by Exxon Chemical USA of Houston, Tex. The film may be laminated using adhesive available from National Starch & Chemical Company of Bridgewater, N.J. Yet another suitable construction for the backsheet 118 includes a web of spunbond or SMS (spunbond\meltblown\spunbond) nonwoven material and breathable or non-breathable films of 0.5 mils to 2.0 mils in thickness.
- The
absorbent core 136 is generally elongated and rectangular in shape. As best shown inFIG. 1 , thecore 136 is generally centered about the longitudinal and lateral axes of thegarment 110. Thecore 136 is preferably made of an absorbent composition adapted to absorb bodily liquids received through the topsheet. Typically, the absorbent composition includes a fluffed wood pulp component for wicking and structural integrity and a high absorbency material (or super absorbent) for containing liquids. However, thegarment 110, according to the present invention, is equally adapted to utilize absorbent cores of varying shapes and compositions, as well as other types of cores known in the art. - As used herein for purposes of description, the term “topsheet,” “topsheet assembly” or “inner layer of the garment” may refer to any sheet, layer or composite that covers the
core 136 and extends beyond thecore 136 toward front and rearlongitudinal edges core 136 and any part, portion, region or section thereof. The topsheet may be referred to as one structure or as individual structures or layers. For example, the topsheet may comprise three individual topsheets, one for each of front, rear, andcrotch panels crotch panels - The topsheet may be constructed from a wide range of suitable materials including nonwoven webs of natural fibers (e.g., wood or cotton) or synthetic fibers (e.g., polypropylene or polyester), a combination of such webs or fibers, or apertured film. One suitable topsheet material is a 15 gsm spunbond polypropylene from Avgol Nonwoven Fabrics of Holon, Israel. In addition, the topsheet may be treated with a surfactant to facilitate liquid transfer, especially at a central zone of the topsheet over the
core 136, and an inner surface of the topsheet may be treated with a chemical to increase the surface tension of liquid passing through the material. - Referring to the laid-
open structure 110 ofFIG. 1 , the topsheet may comprise three topsheets, corresponding to a topsheet for each of front, rear andcrotch panels - Leg cuffs may be positioned on either side of or spaced from a longitudinal center axis and laterally outboard of the
core 136. These cuffs may extend generally upwardly from the topsheet (i.e., toward the user). The longitudinal ends of the cuffs may be attached, for example, to the topsheet in the front andrear panels - The leg cuffs (or at least the outer cuff section) may be formed by a number of alternative methods known in the art. One method involves gluing a separately constructed leg cuff or cuff section to the top surface of the garment. Another method requires forming the leg cuff or cuff section from the topsheet or the backsheet. Yet another method involves creating and folding noodle cuffs as disclosed in U.S. Pat. No. 5,536,350, which is hereby incorporated by reference.
- It is understood that it will be apparent to one skilled in the art, upon reading the detailed descriptions provided herein and viewing the accompanying Figures, to employ various conventional manufacturing elements (e.g., rollers, conveyors, etc.) and arrangements thereof to produce the garment and, more particularly, a breathable, stretchable section of the garment as described above.
- Referring to
FIG. 1 , disposableabsorbent garment 110 comprises multiple elasticated areas. Elasticated areas include the front andrear waist sections leg elastics 148, andcrotch elastics 146. The elastics depicted in the figures are elastic strands, however, other elasticizing means known in the art may be employed, for example, elasticated film. Referring toFIGS. 1-3 , corresponding elements inrespective garments FIG. 1, 246 inFIG. 2, and 346 inFIG. 3 . The absorbent core is annotated as 136 inFIG. 1, 236 inFIG. 2, and 336 inFIG. 3 - Referring to the embodiment in
FIG. 1 , the front andrear panels elastication 152 andnon-elasticated regions 156. For ease of reference, the term “non-elasticated” and variations of the term includes zones in which no elasticizing means is added and zones in which elasticizing means exist but have been de-elasticized, for example, a zone in which elasticized film exists but where the elastication of the film has been deadened or otherwise rendered ineffective. Thenon-elasticated regions 156 are located at front and rear longitudinal ends 130 and 132, inward of front andrear waist regions Non-elasticated regions 156 traverse the entire lateral width of the front andrear panels Non-elasticated regions 156 are continuous and are substantially rectangular in shape, with longitudinal dimensions being less than lateral dimensions. - Referring to the embodiment in
FIG. 2 , thefront panel 212 comprises elasticated zones comprising a central region ofelastication 252 andnon-elasticated regions 256 atfront panel non-elastication 256 travel along the entire longitudinal length of the side edges 226 a and 226 b, except for thewaist regions Rear panel 214 comprisesnon-elasticated regions 256 at rear panel side edges 228 a and 228 b. In the embodiment depicted inFIG. 2 , the side edgenon-elasticated regions 256 are substantially rectangular regions with longitudinal dimensions that are larger than lateral dimensions. - Referring to the embodiment in
FIG. 3 , thefront panel 312 comprises elasticated zones comprising a central region ofelastication 352,upper elastication zones 352, andnon-elasticated regions 356. Thenon-elasticated regions 356 travel along the entire width of the front and rear panels, and are laterally located withinelasticated regions 352. Thenon-elasticated regions 356 present a gap withinelasticated regions 352. In extending from thefront waist edge 330 towards the crotch edge offront panel 312, a first region of waist elastics is followed by an upper zone ofelastication 352, anon-elasticated region 356, which is then followed by a second region ofpanel elastics 352. In the embodiment depicted inFIG. 3 , this pattern is repeated in the rear panel. In some embodiments, front and rear panel zones of elastication follow the same elastication pattern. In other embodiments, front and rear panel zones of elastication follow different patterns. For example, the front panel may comprise a longitudinally-spanning non-elasticized zone and the rear panel may comprise side edge non-elasticized zones. In still other embodiments, only one of the front and rear panels exhibit zones of elastication and non-elastication. - Additionally, the panel elastication may assume a variety of combinations of elasticized and non-elasticized zones. For example, the
non-elasticized zones 156 ofFIG. 1 may include intermittent, elasticized zones spaced inboard of the side edges and, likewise, theelasticized zones 152 may include intermittent, non-elasticized zones. Thenon-elasticized zones 256 ofFIG. 2 may include intermittent, elasticized zones spaced inboard of the side edges and, likewise, theelasticized zones 252 may include intermittent, non-elasticized zones. Thenon-elasticized zones 356 ofFIG. 3 may include intermittent, elasticized zones spaced inboard of the side edges and, likewise, theelasticized zones 352 may include intermittent, non-elasticized zones. - The claims are not to be interpreted as including means-plus- or step-plus-function limitations unless such a limitation is explicitly recited in a given claim using the phrase(s) “means for” or “step for,” respectively.
- Although the present disclosure and certain of its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure as defined by the appended claims. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the present invention, disclosure, machines, manufacture, compositions of matter, means, methods, or steps presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present disclosure. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims (20)
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US16/843,007 US20200229987A1 (en) | 2015-09-28 | 2020-04-08 | Disposable Absorbent Garment With Improved Elastication |
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US20180333310A1 (en) * | 2017-05-18 | 2018-11-22 | The Procter & Gamble Company | Incontinence pant with low-profile unelasticized zones |
US11596562B2 (en) | 2017-10-31 | 2023-03-07 | The Procter & Gamble Company | Absorbent article with extensible ears |
EP3703638A1 (en) * | 2017-10-31 | 2020-09-09 | The Procter and Gamble Company | Absorbent article with extensible ears |
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US4990147A (en) * | 1988-09-02 | 1991-02-05 | The Procter & Gamble Company | Absorbent article with elastic liner for waste material isolation |
US6364863B1 (en) * | 1995-08-25 | 2002-04-02 | Uni-Charm Corporation | Disposable absorbent undergarment |
US20120283683A1 (en) * | 2011-05-04 | 2012-11-08 | Jung-Chi Tai | Diaper |
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SE508409C2 (en) | 1992-03-04 | 1998-10-05 | Sca Hygiene Prod Ab | Absorbent diaper pants |
JP3055650B2 (en) * | 1994-10-14 | 2000-06-26 | 花王株式会社 | Pants-type disposable diapers |
US7247152B2 (en) * | 1999-10-15 | 2007-07-24 | Associated Hygienic Products Llc | Disposable absorbent article with containment structure |
US7632259B2 (en) | 2001-10-31 | 2009-12-15 | Sca Hygiene Products Ab | Absorbent article |
JP4551125B2 (en) * | 2004-05-28 | 2010-09-22 | ユニ・チャーム株式会社 | Disposable pants-type wearing articles |
WO2006001737A1 (en) | 2004-06-28 | 2006-01-05 | Sca Hygiene Products Ab | Absorbent article with improved leakage security and fit |
WO2009065500A1 (en) | 2007-11-21 | 2009-05-28 | Paul Hartmann Aktiengesellschaft | Incontinence pant |
JP6014448B2 (en) * | 2012-10-01 | 2016-10-25 | ユニ・チャーム株式会社 | Absorbent articles |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US4990147A (en) * | 1988-09-02 | 1991-02-05 | The Procter & Gamble Company | Absorbent article with elastic liner for waste material isolation |
US6364863B1 (en) * | 1995-08-25 | 2002-04-02 | Uni-Charm Corporation | Disposable absorbent undergarment |
US20120283683A1 (en) * | 2011-05-04 | 2012-11-08 | Jung-Chi Tai | Diaper |
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