Patents by Inventor Lucas Bäck
Lucas Bäck has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240277529Abstract: A method for continuously producing disposable pant-type articles from webs moving in a machine direction, the method including attaching a non-elastic crotch web between a tensioned elastic front panel web and a tensioned elastic rear panel web to form a coherent chassis web of interconnected precursor articles and attaching a pair of stretched crotch elastic members to the chassis web in each precursor article with the crotch elastic members being arranged in a cross machine direction, whereafter leg cuts are formed in the chassis web between the precursor articles, the chassis web is folded along a fold-line extending in the machine direction, first and second side seams are formed in each precursor article, along dividing lines between the precursor articles, the side seams being formed from the aligned waist edges of the precursor articles, to the leg cuts, and finally severing individual pant-type articles from the chassis web.Type: ApplicationFiled: June 9, 2021Publication date: August 22, 2024Applicant: Essity Hygiene and Health AktiebolagInventors: Lucas BÄCK, Fanny STENHOLM, Helena WALLIN, Johannes LANOOIJ
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Publication number: 20240252368Abstract: A disposable pant-type article including a front body panel and a rear body panel, each being elastically stretchable in a transverse direction, and a crotch region being located between a front panel crotch edge and a rear panel crotch edge. The article has first and second leg edges, each leg edge constituted by a front leg edge section, a rear leg edge section, and a crotch leg edge section. Each front leg edge section has an inner point located at a greater distance from a side seam than from a longitudinally extending centre line, the inner point being closer to the front waist edge than an outer point on the front leg edge section. Each crotch leg edge section has an intermediate point located between the front and rear crotch edges which is closer to the longitudinal centre line than a front endpoint of the crotch leg edge section.Type: ApplicationFiled: June 9, 2021Publication date: August 1, 2024Applicant: Essity Hygiene and Health AktiebolagInventors: Lucas BÄCK, Fanny STENHOLM, Helena WALLIN
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Publication number: 20240245557Abstract: A disposable pant-type article including a front body panel and a rear body panel, each being elastically stretchable in the transverse direction, and a crotch region being located between a front panel crotch edge and a rear panel crotch edge. The article has first and second leg edges, each leg edge constituted by a front leg edge section being arranged in the front body panel, a rear leg edge section being arranged in the rear body panel; and a crotch leg edge section being arranged in the crotch region. A pre-tensioned first crotch elastic member is arranged extending in the longitudinal direction along the first leg edge and a pre-tensioned second crotch elastic member is arranged extending in the longitudinal direction along the second leg edge. The crotch leg edge section of the leg edges extends completely or partly in the respective crotch elastic member.Type: ApplicationFiled: June 9, 2021Publication date: July 25, 2024Applicant: Essity Hygiene and Health AktiebolagInventors: Lucas BÄCK, Fanny STENHOLM, Helena WALLIN
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Publication number: 20240238132Abstract: An absorbent article comprising an absorbent core being enclosed by a liquid-permeable core cover comprising an upper core cover layer and a lower core cover layer and having a longitudinal center line. The absorbent core has a pair of longitudinally extending side edges and a pair of transversely extending end edges. The core cover layers are connected inside seals extending along the side edges of the absorbent core. The absorbent core comprises one or more longitudinally extending channels arranged at a distance from the side seals, each of the one or more channels being free or substantially free from absorbent material and having a channel seal extending therein. The channel seal joins the upper and lower core cover layers of the core cover within the channel, with a seal strength of the channel seal being higher than a seal strength of each of the first and the second side seals of the absorbent core.Type: ApplicationFiled: February 28, 2022Publication date: July 18, 2024Applicant: Essity Hygiene and Health AktiebolagInventor: Lucas BÄCK
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Publication number: 20240216186Abstract: Pre-tensioned first and second crotch elastic members are arranged extending in the longitudinal direction along the leg edges in the crotch region, the leg edges in the crotch region extending partly or fully in the corresponding crotch elastic member. The crotch region is generally hourglass-shaped with a narrow intermediate portion. The crotch elastic members have first side edges at least partly coinciding with the corresponding leg edge in the crotch region. A distance as measured in the transverse direction between the first side edge of the absorbent core and the first side edge of the first crotch elastic member and a distance as measured in the transverse direction between the second side edge of the absorbent core and the first side edge of the second crotch elastic member varying with at most 30 millimetres along a full length of the crotch elastic members.Type: ApplicationFiled: June 9, 2021Publication date: July 4, 2024Applicant: Essity Hygiene and Health AktiebolagInventors: Lucas BÄCK, Fanny STENHOLM, Helena WALLIN
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Patent number: 11759373Abstract: A method for producing a chassis web for a disposable pant article, the method including feeding a first continuous base web in a machine direction; attaching a continuous elastic waistband component to the first base web in an attachment area extending in the machine direction; attaching a second continuous base web to the first continuous base web and the continuous waistband component, covering at least the continuous waistband component, thereby forming a compound base web having first and second side edges, the attachment area being spaced apart from at least one of the first and second side edges of the compound base web; severing the compound base web and the attached waistband component by cutting; shifting positions of the first panel web and the second panel web in a cross machine direction; forming a coherent chassis web.Type: GrantFiled: October 30, 2020Date of Patent: September 19, 2023Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventors: Lucas Bäck, Karin Ljungberg
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Publication number: 20220386723Abstract: The front and back portions are joined in a first and a second side seam along opposing side edges of the front and back portions and comprising a stretch-bonded laminate web including an elastic film which is stretch-bonded between two nonwoven webs. The side seams are constituted by fusion bonds formed by laser bonding and extend along the side edges of the front and back portions of the pant-type garment. The side seams have a width in the width direction of the pant-type garment in the range of from 0.3 to 1.5 millimetres, and a thickness in the range of from 0.2 to 1.5 millimeters, the thickness of the side seams being perpendicular to the width direction and the length direction of the pant type garment.Type: ApplicationFiled: October 22, 2019Publication date: December 8, 2022Applicant: Essity Hygiene and Health AktiebolagInventors: Lucas BÄCK, Victor OREDSSON
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Publication number: 20220370264Abstract: A pant-type garment having a length direction and a width direction and being divided in the length direction into a front portion, a back portion and a crotch. The front and back portions are joined in a first and a second side seam arranged in first and second side seam regions and are formed as fusion bonds formed by laser bonding of superposed layers of the front and back portions along opposing side edges of the front and back portions. The side seams have a length in the length direction of the pant-type garment and are constituted by fused thermoplastic material. Each side seam has a generally rectangular cross-sectional area, a width in the width direction of the pant-type garment and a thickness perpendicular to the width direction (W) and the length direction (L) within 80% to 100% of the length (ls) of each side seam.Type: ApplicationFiled: October 22, 2019Publication date: November 24, 2022Applicant: Essity Hygiene and Health AktiebolagInventors: Lucas BÄCK, Victor OREDSSON
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Patent number: 11399987Abstract: A method for producing a chassis web which may be further converted into a disposable pant article and a pant article is disclosed. The method includes feeding a continuous base web in a machine direction; attaching a continuous elastic waistband component to the base web in an attachment area; severing the base web and the attached elastic waistband component by cutting; shifting positions of the first panel web and the second panel web in a cross machine direction, thereby bringing the first and the second panel webs into an arrangement with first and second cut edges facing away from each other in the cross machine direction; directly or indirectly connecting the first side edge of the first panel web with the second side edge of the second panel web thereby forming a coherent chassis web.Type: GrantFiled: September 9, 2015Date of Patent: August 2, 2022Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventors: Lucas Bäck, Karin Ljungberg
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Publication number: 20210369510Abstract: An array includes at least one first disposable pant article and at least one second disposable pant article. The first article has a first structure, and at least the outside surface and a surrounding zone of the absorbent core have substantially the same first colour. The second article has a second structure, and at least the outside surface and a surrounding zone of the absorbent core have substantially the same second colour. Each of the first and second articles includes an information tag arranged on the inside of the waist portion, the material of the information tag being in a third colour which is different from the first and second colours by a colour difference ?E*ab more than 20. The first structure is structurally different from the second structure and/or the first colour is different from the second colour by a colour difference ?E*ab more than 10.Type: ApplicationFiled: June 5, 2018Publication date: December 2, 2021Applicant: Essity Hygiene and Health AktiebolagInventors: Karin LJUNGBERG, Katarina ERIKSSON, Lucas BÄCK, Anna STENBERG
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Patent number: 11051997Abstract: A disposable pant-type absorbent article, such as a pant diaper, a sanitary pant or incontinence pant is described. The disposable pant-type absorbent article has a longitudinal direction (Y) and a transverse direction (X). The disposable pant-type absorbent article is adapted for a male user. A method for manufacturing such a disposable pant-type absorbent article is also described.Type: GrantFiled: March 28, 2017Date of Patent: July 6, 2021Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventors: Lucas Bäck, Anna Klinte Olsson, Katarina Eriksson
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Patent number: 11045361Abstract: An array of disposable pant-type gender-specific absorbent articles adapted for female and male users. The array has a first subarray including first and second sizes for female users; and a second subarray including third and fourth sizes for male users. Each absorbent article in the array has a transversely elasticised waist portion. At least one of the first and second size absorbent articles has a first circumferential length of the waist portion in a relaxed state and a second circumferential length of the waist portion in an extended state. At least one of the third and fourth size absorbent articles has a third circumferential length of the waist portion in a relaxed state and a fourth circumferential length of the waist portion in an extended state. The first circumferential length is smaller than the third circumferential length, and the second circumferential length is equal to the fourth circumferential length.Type: GrantFiled: August 24, 2017Date of Patent: June 29, 2021Assignee: Essity Hygiene and Health AktiebolagInventors: Lucas Bäck, Karin Ljungberg, Anna Stenberg
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Patent number: 11033439Abstract: An elastic laminate including a first nonwoven layer, a second nonwoven layer, and a plurality of elastic strands arranged in parallel with one another between said first and second nonwoven layers is disclosed, as well as a process for the production of the laminate. The elastic laminate includes elastic strands that are stretched and individually coated with an adhesive. The first and second nonwoven layers are attached to the stretched elastic strands to provide a corrugated elastic laminate when the elastic strands are relaxed. At least one of the nonwoven layers is attached to the strands at distinct adhesive bonding points in a repeating predetermined pattern in a lengthwise direction along the strands to form a predetermined corrugation pattern, and the nonwoven layers are substantially free of adhesive, except in the adhesive bonding points where the layers are attached to the elastic strands.Type: GrantFiled: December 21, 2012Date of Patent: June 15, 2021Assignee: Essity Hygiene and Health AktiebolagInventors: Hans Een, Lucas Bäck, Inge Wågdahl
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Patent number: 11020282Abstract: A method for producing a chassis web for a disposable pant article, the method including feeding a first continuous base web in a machine direction; attaching a continuous elastic waistband component to the first base web in an attachment area extending in the machine direction; attaching a second continuous base web to the first continuous base web and the continuous waistband component, covering at least the continuous waistband component, thereby forming a compound base web having first and second side edges, the attachment area being spaced apart from at least one of the first and second side edges of the compound base web; severing the compound base web and the attached waistband component by cutting; shifting positions of the first panel web and the second panel web in a cross machine direction; forming a coherent chassis web.Type: GrantFiled: September 9, 2015Date of Patent: June 1, 2021Assignee: Essity Hygiene and Health AktiebolagInventors: Lucas Bäck, Karin Ljungberg
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Patent number: 11000427Abstract: A disposable pant-type absorbent article includes a chassis and an absorbent body. The chassis has a front portion and a back portion and each of the front and back portions has a waist edge, a pair of leg edges and a pair of side edges. The front and back portions are joined to each other at opposite side edges to at least partly define a waist-opening and a pair of leg-openings. The absorbent body is located mainly in a crotch portion of the article. An elastic leg feature is fastened to the chassis at least partly along leg edges. The elastic leg feature extends from the associated side edge towards a centre line in the longitudinal direction of the article. The disclosure also relates to a corresponding method of manufacturing a pant-type absorbent article, as well as an array of gender-specific, disposable, absorbent articles.Type: GrantFiled: September 9, 2015Date of Patent: May 11, 2021Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventors: Katarina Eriksson, Lucas Bäck, Anna Klinte Olsson
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Patent number: 10993856Abstract: An array of products comprising three or more different sizes of disposable pant-type absorbent articles is provided, wherein each of first and second and third disposable pant-type absorbent articles comprises a chassis with a front portion and a back portion, and an absorbent body attached to the chassis, and a length direction and a width direction, wherein the size of the front and rear portion of the first disposable pant-type absorbent articles is smaller than the size of the front and rear portion of the second disposable pant-type absorbent articles, wherein the size of the front and rear portion of the third disposable pant-type absorbent articles is larger than the size of the front and rear portion of the second disposable pant-type absorbent articles, and wherein each of the front and back portions has a waist edge, a pair of leg edges and a pair of side edges and wherein a distance, in the length direction, between the leg edge of the front portion and the leg edge of the back portion, is commonType: GrantFiled: November 23, 2016Date of Patent: May 4, 2021Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventor: Lucas Bäck
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Patent number: 10993844Abstract: An absorbent article having a longitudinal direction, a transverse direction and a thickness direction and comprising a topsheet, a backsheet and an absorbent core is disclosed. The article has, in the longitudinal direction, a front portion, a back portion, and a crotch portion located between the front and rear portions. The front and back portions define a waist edge and a leg edge, and the crotch portion defines two crotch edges. A first elastic element extends along the waist edge, a second elastic element extends along the leg edge and a third and a fourth elastic element each extend along one of the crotch edges. The topsheet or the bottomsheet or another sheet is folded along the waist edge, leg edge and crotch edges so as to enclose at least a part of each corresponding elastic element.Type: GrantFiled: November 23, 2016Date of Patent: May 4, 2021Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventors: Anna Klinte Olsson, Stina Lindlöf, Lucas Bäck, Katarina Eriksson
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Publication number: 20210093485Abstract: Disposable pant article having a waist portion and a crotch portion includes an absorbent core and a liquid-permeable topsheet covering the absorbent core, wherein the article is composed of a plurality of fabrics which define the colours of the inside and outside surfaces of the article. At least the outside surface and a surrounding zone, surrounding the absorption zone, have, in the CIE L*a*b* colour space, L* values less than 80 and mutual colour differences ?E*ab less than 10; and the absorption zone has, in the CIE L*a*b* colour space, an L* value less than 90 and a colour difference ?E*ab more than 5 with respect to the surrounding zone and/or the outer surface.Type: ApplicationFiled: June 5, 2018Publication date: April 1, 2021Applicant: Essity Hygiene and Health AktiebolagInventors: Karin LJUNGBERG, Katarina ERIKSSON, Lucas BÄCK, Anna STENBERG
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Publication number: 20210045932Abstract: A method for producing a chassis web for a disposable pant article, the method including feeding a first continuous base web in a machine direction; attaching a continuous elastic waistband component to the first base web in an attachment area extending in the machine direction; attaching a second continuous base web to the first continuous base web and the continuous waistband component, covering at least the continuous waistband component, thereby forming a compound base web having first and second side edges, the attachment area being spaced apart from at least one of the first and second side edges of the compound base web; severing the compound base web and the attached waistband component by cutting; shifting positions of the first panel web and the second panel web in a cross machine direction; forming a coherent chassis web.Type: ApplicationFiled: October 30, 2020Publication date: February 18, 2021Applicant: SCA HYGIENE PRODUCTS ABInventors: Lucas BÄCK, Karin LJUNGBERG
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Patent number: 10905602Abstract: An array of gender-specific disposable absorbent articles is provided. The array has a first disposable absorbent article adapted to be worn by males and a second disposable article adapted to be worn by females. Both articles have in their longitudinal direction, a front portion, a back portion and a crotch portion between the front portion and the back portion. The first article has a first elastic component configured for providing fit and comfort to a male user. The second article has a second elastic component configured for providing fit and comfort to a female user. The first and the second elastic components each have a plurality of elastic elements extending at least partly along each respective article. The first and second elastic components differ from each other in at least the positioning or the elastic strength of the respective elastic elements. A method for manufacturing the array is also provided.Type: GrantFiled: November 23, 2016Date of Patent: February 2, 2021Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventors: Anna Klinte Olsson, Lucas Bäck