Patents by Inventor Karin Ljungberg

Karin Ljungberg 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).

  • Patent number: 11759373
    Abstract: 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: Grant
    Filed: October 30, 2020
    Date of Patent: September 19, 2023
    Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAG
    Inventors: Lucas Bäck, Karin Ljungberg
  • Patent number: 11399987
    Abstract: 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: Grant
    Filed: September 9, 2015
    Date of Patent: August 2, 2022
    Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAG
    Inventors: Lucas Bäck, Karin Ljungberg
  • Publication number: 20210369510
    Abstract: 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: Application
    Filed: June 5, 2018
    Publication date: December 2, 2021
    Applicant: Essity Hygiene and Health Aktiebolag
    Inventors: Karin LJUNGBERG, Katarina ERIKSSON, Lucas BÄCK, Anna STENBERG
  • Publication number: 20210307969
    Abstract: A method for producing an array of disposable pant-type articles, the array including at least a first and a second pant-type article having different sizes. The method includes a number of different processes corresponding to the number of pant-type articles in the array wherein all processes involve forming a stretchbonded laminate web comprising a continuous elastic web and a non-elastic or less elastic web, forming a composite web of precursor articles including the stretchbonded laminate web and separating individual pant-type articles from the composite web by severing the composite web at side joins formed between the precursor articles. In the different processes, the continuous elastic web differs between the different processes with regard to elastic properties while a pitch length of the stretchbonded elastic laminate web is the same in all continuous processes of the method. Also, an array of pant-type articles which may be produced by the method.
    Type: Application
    Filed: August 6, 2018
    Publication date: October 7, 2021
    Applicant: Essity Hygiene and Health Aktiebolag
    Inventor: Karin LJUNGBERG
  • Patent number: 11045361
    Abstract: 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: Grant
    Filed: August 24, 2017
    Date of Patent: June 29, 2021
    Assignee: Essity Hygiene and Health Aktiebolag
    Inventors: Lucas Bäck, Karin Ljungberg, Anna Stenberg
  • Patent number: 11020282
    Abstract: 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: Grant
    Filed: September 9, 2015
    Date of Patent: June 1, 2021
    Assignee: Essity Hygiene and Health Aktiebolag
    Inventors: Lucas Bäck, Karin Ljungberg
  • Publication number: 20210093485
    Abstract: 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: Application
    Filed: June 5, 2018
    Publication date: April 1, 2021
    Applicant: Essity Hygiene and Health Aktiebolag
    Inventors: Karin LJUNGBERG, Katarina ERIKSSON, Lucas BÄCK, Anna STENBERG
  • Publication number: 20210045932
    Abstract: 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: Application
    Filed: October 30, 2020
    Publication date: February 18, 2021
    Applicant: SCA HYGIENE PRODUCTS AB
    Inventors: Lucas BÄCK, Karin LJUNGBERG
  • Publication number: 20200297550
    Abstract: 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: Application
    Filed: August 24, 2017
    Publication date: September 24, 2020
    Applicant: Essity Hygiene and Health Aktiebolag
    Inventors: Lucas Bäck, Karin Ljungberg, Anna Stenberg
  • Publication number: 20180256410
    Abstract: 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: Application
    Filed: September 9, 2015
    Publication date: September 13, 2018
    Applicant: SCA Hygiene Products AB
    Inventors: Lucas Bäck, Karin Ljungberg
  • Publication number: 20180250171
    Abstract: 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: Application
    Filed: September 9, 2015
    Publication date: September 6, 2018
    Applicant: SCA Hygiene Products AB
    Inventors: Lucas Bäck, Karin Ljungberg