WO2022103343A1 - Multi-phase capacity management system with distributor channel for hygiene products - Google Patents

Multi-phase capacity management system with distributor channel for hygiene products Download PDF

Info

Publication number
WO2022103343A1
WO2022103343A1 PCT/TR2020/051080 TR2020051080W WO2022103343A1 WO 2022103343 A1 WO2022103343 A1 WO 2022103343A1 TR 2020051080 W TR2020051080 W TR 2020051080W WO 2022103343 A1 WO2022103343 A1 WO 2022103343A1
Authority
WO
WIPO (PCT)
Prior art keywords
hygiene product
sap
region
channels
absorbent core
Prior art date
Application number
PCT/TR2020/051080
Other languages
French (fr)
Inventor
Özlem ESEN
Dilsah YAMAN
Ezgi SAYINKAPLAN
Asli Merve ÇAKIR
Original Assignee
Evyap Sabun Yag Gliserin Sanayi Ve Ticaret Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Evyap Sabun Yag Gliserin Sanayi Ve Ticaret Anonim Sirketi filed Critical Evyap Sabun Yag Gliserin Sanayi Ve Ticaret Anonim Sirketi
Priority to MDA20230018A priority Critical patent/MD20230018A2/en
Priority to MA60437A priority patent/MA60437A1/en
Priority to PCT/TR2020/051080 priority patent/WO2022103343A1/en
Publication of WO2022103343A1 publication Critical patent/WO2022103343A1/en

Links

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
    • A61F13/53—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 absorbing medium
    • A61F13/531—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 absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/5323—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having absorbent material located in discrete regions, e.g. pockets
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/531—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 absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
    • 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
    • A61F13/53—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 absorbing medium
    • A61F2013/530481—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 absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • 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
    • A61F13/53—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 absorbing medium
    • A61F2013/530481—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 absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/53051—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 absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged

Definitions

  • the invention relates to a hygiene product with a channel structure; developed to ensure that the urine is spread throughout the product, and to eliminate sagging and clumping problems by maintaining integrity in wet state.
  • Hygiene products are absorbent products which are developed in order to absorb and retain body wastes such as urine.
  • a hygiene product essentially comprises a topsheet forming the top layer, a backsheet forming the lowermost layer, and at least one absorbent core layer between the topsheet and the backsheet.
  • skin disorders such as rash, redness, irritation are seen especially on sensitive skin. The reason for this is that body waste reaches the lower layer late and/or the amount of rewet-wetback to the skin is high in the hygiene product. The first encounter of the hygiene product with body waste usually coincides with the middle region of the product.
  • liquid management system an application known in the state of the art, discloses a liquid management system.
  • the said application discloses an absorbent layer placed between the backsheet, the outermost layer of the hygiene product, and the topsheet, the uppermost layer that contacts the skin.
  • the technology defined as liquid management system refers to one or more channels. It is stated in the document that the said channels provided on the absorbent core are configured such that they may at least partially overlap or not overlap.
  • United States patent document no US 9216116 B2 an application known in the state of the art, is directed to an absorbent article comprising an absorbent core disposed between backsheet, which is the outermost layer of the hygiene product, and topsheet which is the uppermost layer contacting the skin, and enclosed with a wrap.
  • Core wrap comprises a first material and a second material.
  • the first material forms a C- wrap at least partially around the second material.
  • the weight of the superabsorbent polymer (SAP), performing absorbing function makes up of at least 80% of the absorbent core.
  • the absorbent core comprises a channel substantially free of the superabsorbent polymers and at least partially oriented in a longitudinal direction of the hygiene article.
  • the channel has an arcuate portion facing a longitudinal axis of the article. An angle between a tangent line of the said arcuate portion and the longitudinal axis is greater than or equal to 20 degrees.
  • the homogeneous distribution of SAP and pulp as one piece in the absorbent core layer is widely used.
  • the capacity of the absorbent core is predominantly used in the middle and front regions of the product, which are exposed to urine more intensely, and the product is thrown away during product change, mostly without wetting the parts of the absorbent layer on the back of the product. Since the integrity of the absorbent layer between the wetted and non-wetted regions of the product is disrupted, splits occur, the wetted region in the absorbent layer separates from the non-wetted region, and this causes the problem of sagging/clumping when the user is wearing the product.
  • the main objective of the present invention is to provide a hygiene product which enables to spread urine throughout the product.
  • the absorbent core region of the present invention which allows urine to be spread throughout the product, also improves critical performance parameters such as the absorption time and the amount of rewet.
  • the objective of the invention is to provide a more efficient use of the diaper capacity in the front and back regions of the absorbent layer compared to the products in the state of the art, thanks to enabling the liquid/urine to be transferred forward and backward throughout the product. Transferring urine/liquid forward and backward throughout the product is possible by means of the novel absorbent core region developed with the invention.
  • the objective of the invention is to provide a hygiene product with enhanced performance.
  • the contact time of the skin with urine is reduced, and the rash and leakage problems that may arise from the product are eliminated thanks to the hygiene product of the present invention.
  • the extra fluid absorption and retention capacities needed in the front and middle regions due to the accumulation of extra body waste, which may vary depending on gender, in these regions, are provided.
  • the objective of the present invention is to provide a hygiene product which maintains its integrity in wet state.
  • the absorbent core structure better holds onto the nonwoven surface, and the disruption of integrity of the hygiene product in wet state is prevented. By this means, sagging and clumping problems are eliminated.
  • Figure l is a schematic view of the drum used for producing a hygiene product.
  • Figure l is a schematic view of SAP feeding units for phasing.
  • Figure 3 is a schematic view of a channel configuration of a hygiene product which channels.
  • Figure 4 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 5 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 6 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 7 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 8 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 9 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 10 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 11 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 12 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 13 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 14 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 15 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 16 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 17 is a schematic view of an alternative channel configuration of a hygiene product which channels.
  • Figure 18 is a schematic view of nonwoven core wrap folded in G form.
  • Figure 19 is a schematic view of nonwoven core wrap folded in sandwich form.
  • Figure 20 is a schematic view of nonwoven core wrap folded in C form.
  • a hygiene product (100) which is developed in order to absorb and retain body wastes such as urine, comprises
  • ® at least one absorbent core layer (7) which comprises a front region (3) corresponding to the front of the user, a back region (5) corresponding to the back of the user, a middle region (4) located between the front region (3) and the back region (5) in the longitudinal direction,
  • SAP in the middle region (4) or front region (3), up to 21-99% by weight of the total amount of SAP in the absorbent core layer (7).
  • the borders of the geometric form of the hygiene product (100) of the present invention are defined by two vertical edges (1) located opposite to each other along the longitudinal direction and two horizontal edges (2) located opposite to each other along the transverse direction.
  • the hygiene product (100) there is at least one absorbent core layer (7) between the topsheet, which is the uppermost layer, and the backsheet, which is the lowermost layer.
  • the absorbent core layer (7) is divided into three regions along its longitudinal direction. These are the front region (3) corresponding to the front of the user, the back region (5) corresponding to the back of the user, and the middle region (4) located between the front region (3) and the back region (5). In this sense, the front region (3), the middle region (4) and the back region (5) are located between the two horizontal edges (2), respectively.
  • the areas covered by the front region (3), the middle region (4) and the back region (5) are preferably equal.
  • the amount of SAP (superabsorbent polymer) in the said back region (5) is maximum 20% by weight of the total SAP amount used in the absorbent core layer (7). This ratio is preferably in range of 5-15% by weight.
  • the amount of SAP used in the middle region (4) or front region (3) is in the range of 21-99% by weight of the total amount of SAP used in the absorbent core layer (7). The said range is valid only for one of the middle region (4) and the front region (3).
  • the amount of SAP used in the middle region (4) or front region (3) is preferably in the range of 25- 40% by weight.
  • At least one channel (6) is configured on the absorbent core layer (7) in order to carry out the fluid transfer function.
  • Said channel (6) which is laminated with hotmelt adhesive, can extend along the longitudinal axis (y-axis) or transverse axis (x-axis) or along both the longitudinal axis and the transverse axis (both x and y-axis) of the hygiene product (100).
  • the number of channels (6) in the hygiene product (100) can be one or more.
  • the said channels (6) can be configured so that they do not intersect with each other, while they can also comprise one or more intersection points.
  • the channels (6) having intersection points preferably intersect at 1-6 points.
  • the channels (6) in the absorbent core are preferably positioned to cover the region where the body waste first comes into contact with the hygiene product (100).
  • the structure and length of the channels (6) can be different from each other.
  • General views of hygiene products (100) with different channel (6) structures are illustrated in Figure 3 - Figure 17.
  • the starting point of the channel (6) should be below the end point (where it starts) of the front region (3) in the absorbent core layer (7), preferably by 1-5% of the length of the absorbent core layer (7)
  • the ending point of the channel (6) should be above the end point (where it starts) of the back region (5) in the absorbent core layer (7), preferably by 8-15% of the length of the absorbent core layer (7).
  • the said channels (6) do not comprise any absorbent material and have a width of at least 2 mm.
  • the hotmelt adhesive used to fix the channels (6) can be rubber or polyolefin based.
  • drum (8) In the production of the hygiene product (100) of the invention, equipment called drum (8) is used.
  • the said drum (8) structure is schematically shown in Figure 1.
  • SAP and pulp raw materials included in the absorbent core layer (7) structure are mixed in the drum (8).
  • molds (9) There are varying numbers of molds (9) on the drum (8) depending on the size of the product. Each mold (9) carries the SAP and pulp mixture that forms the absorbent core layer (7) of one hygiene product (100) alone.
  • the SAP and pulp are fed separately to the drum (8) and mixed when being filled into the drum (8) mold (9) with vacuum in order to form the absorbent core layer (7).
  • the vacuum system in the drum (8) changes depending on the regions.
  • the length of a single mold (9) in the transverse direction (x-axis direction) is generally in the range of 60-150 mm, more commonly 65-140 mm, preferably 70-125 mm.
  • the length of a single mold (9) in the longitudinal direction (y-axis direction) is generally in the range of 250-600 mm, more commonly 250-550 mm, preferably 260-500 mm.
  • the SAP and pulp mixture is mixed homogeneously in the drum (8) and fed into the system at the same density at each part of the mold (9).
  • the front region (3) and the middle region (4) should have higher liquid absorption and retention capacity in the hygiene product (100) compared to the back region (3).
  • the required extra liquid absorption and retention capacities are provided with the amount of SAP fed in different amounts to the front region (3) and middle region (4), which can specifically vary depending on gender.
  • the absorbent layer coming out of each drum (8) mold (9) sequentially adheres to the polyethylene film surface of the backsheet raw material.
  • Non-woven fabric wrapping material (10) wraps over the absorbent layers coming out of the molds (9) and adhering to the backsheet surface.
  • the said wrapping material (10) can have different forms. Schematic view of the wrapping materials (10) folded in G form is illustrated in Figure 18, folded in sandwich form on top of each other is illustrated in Figure 19, and folded in C form is illustrated in Figure 20.
  • the ADL layer acquisition distribution layer
  • the said ADL layer is positioned between the absorbent core layer (7) and the topsheet.
  • ADL layer is produced with Air Through Bonding technology and its weight per unit area is in the range of 20 - 200 g/m 2 . This value is preferably in the range of 60 - 100 g/m 2 .

Abstract

The invention relates to a hygiene product (100) with a channel (6) structure; developed to ensure that the urine is spread throughout the product, and to eliminate sagging and clumping problems by maintaining integrity in wet state.

Description

MULTI-PHASE CAPACITY MANAGEMENT SYSTEM WITH DISTRIBUTOR CHANNEL FOR HYGIENE PRODUCTS
DESCRIPTION
Field of the Invention
The invention relates to a hygiene product with a channel structure; developed to ensure that the urine is spread throughout the product, and to eliminate sagging and clumping problems by maintaining integrity in wet state.
Background of the Invention
Hygiene products are absorbent products which are developed in order to absorb and retain body wastes such as urine. A hygiene product essentially comprises a topsheet forming the top layer, a backsheet forming the lowermost layer, and at least one absorbent core layer between the topsheet and the backsheet. In hygiene products produced with the current technique, skin disorders such as rash, redness, irritation are seen especially on sensitive skin. The reason for this is that body waste reaches the lower layer late and/or the amount of rewet-wetback to the skin is high in the hygiene product. The first encounter of the hygiene product with body waste usually coincides with the middle region of the product. Failure to efficiently optimize the distribution of SAP and pulp raw materials within the absorbent layer causes the body waste to accumulate densely in the middle region of absorbent layer and causes the SAP particles in this region to swell too much in time due to excessive fluid loading. This leads to gelling and inhibition of liquid delivery to other SAP molecules. Accordingly, leakage and diaper rash problems are seen in the hygiene product. Furthermore, when liquid permeability cannot be achieved between the gelled SAP particles, the product is thrown away without using the SAP and pulp capacity provided in the front and back regions of the hygiene product. Even though the technique used in the commercially available hygiene products with channels in recent years has somewhat improved the absorption time and the amount of rewet, it cannot meet the required performance since the channels limit the capacity of the product. In addition to this, even though the urine is easily transferred to the front and back via the channels in the commercially available baby diapers with channels, it is again encountered with the leakage problem since the channels in the absorbent core region limit the required capacity.
Due to lack of having optimum SAP and pulp ratio, the excessive swelling of the absorbent layer makes it difficult for the hygiene product to anatomically adapt to the body. In the current technology, there is no absorbent article and absorbent layer production technology in which all these performance requirements are combined.
United States patent document no 2015/065973 Al, an application known in the state of the art, discloses a liquid management system. The said application discloses an absorbent layer placed between the backsheet, the outermost layer of the hygiene product, and the topsheet, the uppermost layer that contacts the skin. The technology defined as liquid management system refers to one or more channels. It is stated in the document that the said channels provided on the absorbent core are configured such that they may at least partially overlap or not overlap.
United States patent document no US 9216116 B2, an application known in the state of the art, is directed to an absorbent article comprising an absorbent core disposed between backsheet, which is the outermost layer of the hygiene product, and topsheet which is the uppermost layer contacting the skin, and enclosed with a wrap. Core wrap comprises a first material and a second material. The first material forms a C- wrap at least partially around the second material. The weight of the superabsorbent polymer (SAP), performing absorbing function, makes up of at least 80% of the absorbent core. The absorbent core comprises a channel substantially free of the superabsorbent polymers and at least partially oriented in a longitudinal direction of the hygiene article. The channel has an arcuate portion facing a longitudinal axis of the article. An angle between a tangent line of the said arcuate portion and the longitudinal axis is greater than or equal to 20 degrees.
In the current state, in hygiene products produced with the applications of the state of the art, the hotmelt adhesives in the hygiene product lose their function in a short time after they encounter body waste, causing the absorbent layer not to maintain its integrity, the SAP and pulp raw materials present in the hygiene product are clumped and sagging problem is experienced in the product with the effect of gravity. This prevents liquid distribution and limits the effective use of the product's capacity. In addition, the product, anatomical compatibility of which is compromised due to clumping, disturbs the user.
In hygiene products used in the technical field, the homogeneous distribution of SAP and pulp as one piece in the absorbent core layer is widely used. In this case, the capacity of the absorbent core is predominantly used in the middle and front regions of the product, which are exposed to urine more intensely, and the product is thrown away during product change, mostly without wetting the parts of the absorbent layer on the back of the product. Since the integrity of the absorbent layer between the wetted and non-wetted regions of the product is disrupted, splits occur, the wetted region in the absorbent layer separates from the non-wetted region, and this causes the problem of sagging/clumping when the user is wearing the product.
Furthermore, even though the time to absorb the liquid and the amount of rewethave been slightly improved in the commercially available hygiene products with channels in recent years, the hotmelt adhesives between the channels of the absorbent layer become weak due to urine. The hotmelt adhesives lose their function and the channels are separated due to the swelling of the SAP particles. This situation results in the disruption of the integrity of the absorbent layer and causes loss of the channels. Furthermore, even if the channel partially maintains its integrity, the fact that the optimum SAP and pulp ratio is not used causes extreme swelling of the absorbent layer of the hygienic product, making it difficult for the product to adapt to the anatomy. As a result of this, the performance of the absorbent structure weakens and the freedom of movement of the user is limited. In addition to this, the capacity of absorbent article limited with channels cannot meet the needs of the market.
No technology has been found in the literature that meets the requirements of a diaper which provides rapid absorption of urine; has high absorption and retention capacity and anatomical compatibility, and does not sag during use when worn by the baby.
Summary of the Invention
The main objective of the present invention is to provide a hygiene product which enables to spread urine throughout the product. The absorbent core region of the present invention, which allows urine to be spread throughout the product, also improves critical performance parameters such as the absorption time and the amount of rewet.
The objective of the invention is to provide a more efficient use of the diaper capacity in the front and back regions of the absorbent layer compared to the products in the state of the art, thanks to enabling the liquid/urine to be transferred forward and backward throughout the product. Transferring urine/liquid forward and backward throughout the product is possible by means of the novel absorbent core region developed with the invention.
The objective of the invention is to provide a hygiene product with enhanced performance. The contact time of the skin with urine is reduced, and the rash and leakage problems that may arise from the product are eliminated thanks to the hygiene product of the present invention. Furthermore, the extra fluid absorption and retention capacities needed in the front and middle regions due to the accumulation of extra body waste, which may vary depending on gender, in these regions, are provided.
The objective of the present invention is to provide a hygiene product which maintains its integrity in wet state. Within the scope of the invention, by means of the hotmelt adhesives applied on the channels, the absorbent core structure better holds onto the nonwoven surface, and the disruption of integrity of the hygiene product in wet state is prevented. By this means, sagging and clumping problems are eliminated. Detailed Description of the Invention
Multi- Phase Capacity Management System with Distributor Channel for Hygiene Products developed in order to fulfill the objectives of the present invention is illustrated in the accompanying figures, in which:
Figure l is a schematic view of the drum used for producing a hygiene product.
Figure l is a schematic view of SAP feeding units for phasing.
Figure 3 is a schematic view of a channel configuration of a hygiene product which channels.
Figure 4 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 5 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 6 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 7 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 8 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 9 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 10 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 11 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 12 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 13 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 14 is a schematic view of an alternative channel configuration of a hygiene product which channels. Figure 15 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 16 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 17 is a schematic view of an alternative channel configuration of a hygiene product which channels.
Figure 18 is a schematic view of nonwoven core wrap folded in G form.
Figure 19 is a schematic view of nonwoven core wrap folded in sandwich form.
Figure 20 is a schematic view of nonwoven core wrap folded in C form.
The components given in the figures are assigned reference numerals as follows:
100. Hygiene product
1. Vertical edge
2. Horizontal edge
3. Front region
4. Middle region
5. Back region
6. Channel
7. Absorbent core layer
8. Drum
9. Mold
10. Wrapping material (core wrap)
A hygiene product (100), which is developed in order to absorb and retain body wastes such as urine, comprises
® at least one absorbent core layer (7) which comprises a front region (3) corresponding to the front of the user, a back region (5) corresponding to the back of the user, a middle region (4) located between the front region (3) and the back region (5) in the longitudinal direction,
® at least one channel (6) which is located on the said absorbent core layer (7) in order to provide liquid transfer and which does not comprise any absorbent material, ® SAP, on the said back region (5), maximum 20% by weight of the total SAP amount in the absorbent core layer (7),
• SAP, in the middle region (4) or front region (3), up to 21-99% by weight of the total amount of SAP in the absorbent core layer (7).
The borders of the geometric form of the hygiene product (100) of the present invention are defined by two vertical edges (1) located opposite to each other along the longitudinal direction and two horizontal edges (2) located opposite to each other along the transverse direction. In the hygiene product (100), there is at least one absorbent core layer (7) between the topsheet, which is the uppermost layer, and the backsheet, which is the lowermost layer. The absorbent core layer (7) is divided into three regions along its longitudinal direction. These are the front region (3) corresponding to the front of the user, the back region (5) corresponding to the back of the user, and the middle region (4) located between the front region (3) and the back region (5). In this sense, the front region (3), the middle region (4) and the back region (5) are located between the two horizontal edges (2), respectively. In the hygiene product (100), the areas covered by the front region (3), the middle region (4) and the back region (5) are preferably equal.
In the hygiene product (100) of the present invention, the amount of SAP (superabsorbent polymer) in the said back region (5) is maximum 20% by weight of the total SAP amount used in the absorbent core layer (7). This ratio is preferably in range of 5-15% by weight. The amount of SAP used in the middle region (4) or front region (3) is in the range of 21-99% by weight of the total amount of SAP used in the absorbent core layer (7). The said range is valid only for one of the middle region (4) and the front region (3). In a preferred embodiment of the invention, the amount of SAP used in the middle region (4) or front region (3) is preferably in the range of 25- 40% by weight.
In the hygiene product (100) of the present invention, at least one channel (6) is configured on the absorbent core layer (7) in order to carry out the fluid transfer function. Said channel (6), which is laminated with hotmelt adhesive, can extend along the longitudinal axis (y-axis) or transverse axis (x-axis) or along both the longitudinal axis and the transverse axis (both x and y-axis) of the hygiene product (100).
The number of channels (6) in the hygiene product (100) can be one or more. In hygiene products (100) comprising more than one channel (6), the said channels (6) can be configured so that they do not intersect with each other, while they can also comprise one or more intersection points. The channels (6) having intersection points preferably intersect at 1-6 points.
In the hygiene product (100), the channels (6) in the absorbent core are preferably positioned to cover the region where the body waste first comes into contact with the hygiene product (100). The structure and length of the channels (6) can be different from each other. General views of hygiene products (100) with different channel (6) structures are illustrated in Figure 3 -Figure 17. The starting point of the channel (6) should be below the end point (where it starts) of the front region (3) in the absorbent core layer (7), preferably by 1-5% of the length of the absorbent core layer (7) The ending point of the channel (6) should be above the end point (where it starts) of the back region (5) in the absorbent core layer (7), preferably by 8-15% of the length of the absorbent core layer (7).
The said channels (6) do not comprise any absorbent material and have a width of at least 2 mm. The hotmelt adhesive used to fix the channels (6) can be rubber or polyolefin based.
In the production of the hygiene product (100) of the invention, equipment called drum (8) is used. The said drum (8) structure is schematically shown in Figure 1. In the hygiene product (100), SAP and pulp raw materials included in the absorbent core layer (7) structure are mixed in the drum (8). There are varying numbers of molds (9) on the drum (8) depending on the size of the product. Each mold (9) carries the SAP and pulp mixture that forms the absorbent core layer (7) of one hygiene product (100) alone. The SAP and pulp are fed separately to the drum (8) and mixed when being filled into the drum (8) mold (9) with vacuum in order to form the absorbent core layer (7). The vacuum system in the drum (8) changes depending on the regions. While the vacuum value at the point where the SAP and pulp are fed into the drum (8) by mixing is high, the vacuum value is minimized at the lower point on the drum (8) where the mixture is released on the nonwoven surface which will surround the absorbent core layer, and thus the mixture is enabled to be released from the drum (8) mold (9) onto the nonwoven fabric surface which is the absorbent core wrap. The length of a single mold (9) in the transverse direction (x-axis direction) is generally in the range of 60-150 mm, more commonly 65-140 mm, preferably 70-125 mm. The length of a single mold (9) in the longitudinal direction (y-axis direction) is generally in the range of 250-600 mm, more commonly 250-550 mm, preferably 260-500 mm.
In the production method of the present invention, the SAP and pulp mixture is mixed homogeneously in the drum (8) and fed into the system at the same density at each part of the mold (9). In line with the needs of the consumers, since the first point of contact of the liquid with the hygiene product (100) especially in baby boys is closer to the belly area compared to baby girls, the front region (3) and the middle region (4) should have higher liquid absorption and retention capacity in the hygiene product (100) compared to the back region (3). By means of the hygiene product (100) having capacity management system with channels (6) developed within the scope of the present invention, the required extra liquid absorption and retention capacities are provided with the amount of SAP fed in different amounts to the front region (3) and middle region (4), which can specifically vary depending on gender.
The absorbent layer coming out of each drum (8) mold (9) sequentially adheres to the polyethylene film surface of the backsheet raw material. Non-woven fabric wrapping material (10) wraps over the absorbent layers coming out of the molds (9) and adhering to the backsheet surface. The said wrapping material (10) can have different forms. Schematic view of the wrapping materials (10) folded in G form is illustrated in Figure 18, folded in sandwich form on top of each other is illustrated in Figure 19, and folded in C form is illustrated in Figure 20. In the hygiene product (100) of the present invention, the ADL layer (acquisition distribution layer) is provided to aid the channels (6) in transferring the liquid. The said ADL layer is positioned between the absorbent core layer (7) and the topsheet. ADL layer is produced with Air Through Bonding technology and its weight per unit area is in the range of 20 - 200 g/m2. This value is preferably in the range of 60 - 100 g/m2.

Claims

CLAIMS A hygiene product (100), which is developed to absorb and retain body wastes such as urine, comprising
® at least one absorbent core layer (7) which comprises a front region (3) corresponding to the front of the user, a back region (5) corresponding to the back of the user, a middle region (4) located between the front region (3) and the back region (5) in the longitudinal direction,
® at least one channel (6) which is located on the said absorbent core layer (7) in order to provide liquid transfer and which does not comprise any absorbent material, and characterized in that it comprises
• SAP, on the said back region (5), maximum 20% by weight of the total SAP amount in the absorbent core layer (7),
® SAP, in the middle region (4) or front region (3), up to 21-99% by weight of the total amount of SAP in the absorbent core layer (7). A hygiene product (100) according to Claim 1, characterized in that the back region (5) comprises SAP in the range of 5-15% by weight of the total amount of SAP. A hygiene product (100) according to Claim 1, characterized in that one of the middle region (4) and front region (3) comprises SAP in the range of 25- 40% by weight of the total amount of SAP. A hygiene product (100) according to Claim 1, characterized in that it comprises at least one channel (6) extending in the longitudinal axis direction and /or the transverse axis direction of the absorbent core layer (7). A hygiene product (100) according to Claim 1, characterized in that it comprises a plurality of channels (6) intersecting with each other. A hygiene product (100) according to Claim 1, characterized in that it comprises a plurality of channels (6) which do not intersect with each other. A hygiene product (100) according to Claim 1, characterized in that it comprises a plurality of channels (6) intersecting with each other at 1-6 points. A hygiene product (100) according to Claim 1, characterized in that it comprises a channel (6) having a width of at least 2 mm. A hygiene product (100) according to Claim 1, characterized in that it comprises at least one ADL layer positioned between the absorbent core layer (7) and the topsheet in order to aid channels (6) in transferring the liquid. A hygiene product (100) according to Claim 1, characterized in that it comprises ADL layer manufactured with Air Through Bonding technology. A hygiene product (100) according to Claim 9, characterized in that it comprises ADL layer having a weight per unit area of 20-200 g/m2. A hygiene product (100) according to Claim 11, characterized in that it comprises ADL layer having a weight per unit area of 60-100 g/m2.
PCT/TR2020/051080 2020-11-11 2020-11-11 Multi-phase capacity management system with distributor channel for hygiene products WO2022103343A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
MDA20230018A MD20230018A2 (en) 2020-11-11 2020-11-11 Multi-phase capacity management system with distributor channel for hygiene products
MA60437A MA60437A1 (en) 2020-11-11 2020-11-11 MULTI-PHASE CAPACITY MANAGEMENT SYSTEM WITH DISTRIBUTION CHANNEL FOR HYGIENE PRODUCTS
PCT/TR2020/051080 WO2022103343A1 (en) 2020-11-11 2020-11-11 Multi-phase capacity management system with distributor channel for hygiene products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2020/051080 WO2022103343A1 (en) 2020-11-11 2020-11-11 Multi-phase capacity management system with distributor channel for hygiene products

Publications (1)

Publication Number Publication Date
WO2022103343A1 true WO2022103343A1 (en) 2022-05-19

Family

ID=81602586

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2020/051080 WO2022103343A1 (en) 2020-11-11 2020-11-11 Multi-phase capacity management system with distributor channel for hygiene products

Country Status (3)

Country Link
MA (1) MA60437A1 (en)
MD (1) MD20230018A2 (en)
WO (1) WO2022103343A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2740452A1 (en) * 2012-12-10 2014-06-11 The Procter & Gamble Company Absorbent article with high absorbent material content
EP3167858A1 (en) * 2015-11-16 2017-05-17 The Procter and Gamble Company Absorbent cores having material free areas
TR201804157A2 (en) * 2018-03-23 2019-10-21 Evyap Sabun Yağ Gli̇seri̇n Sanayi̇ Ve Ti̇caret A.Ş A NON-SAGGING DIAPER
WO2020142009A2 (en) * 2018-12-31 2020-07-09 Evyap Sabun Yag Gliserin Sanayi Ve Ticaret Anonim Sirketi Production system of partite core for absorbent articles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2740452A1 (en) * 2012-12-10 2014-06-11 The Procter & Gamble Company Absorbent article with high absorbent material content
EP3167858A1 (en) * 2015-11-16 2017-05-17 The Procter and Gamble Company Absorbent cores having material free areas
TR201804157A2 (en) * 2018-03-23 2019-10-21 Evyap Sabun Yağ Gli̇seri̇n Sanayi̇ Ve Ti̇caret A.Ş A NON-SAGGING DIAPER
WO2020142009A2 (en) * 2018-12-31 2020-07-09 Evyap Sabun Yag Gliserin Sanayi Ve Ticaret Anonim Sirketi Production system of partite core for absorbent articles

Also Published As

Publication number Publication date
MD20230018A2 (en) 2023-11-30
MA60437A1 (en) 2023-08-31

Similar Documents

Publication Publication Date Title
US11000422B2 (en) Method and apparatus for making absorbent structures with absorbent material
US10813794B2 (en) Method and apparatus for making absorbent structures with absorbent material
JP6430538B2 (en) Absorbent core with a pattern of absorbent material
EP2836179B1 (en) Unitary absorbent structures comprising an absorbent core and/or an acquisition and dispersion layer for absorbent articles
US9295593B2 (en) Environmentally friendly absorbent structure
EP2383115B1 (en) Water-absorbent sheet composition
CA2138980C (en) A layered, absorbent structure
CN103429203B (en) The method and apparatus assembling the disposable absorbent article with embossing top flat
AU2018200299A1 (en) Absorbent Structure
EP2415439B1 (en) Water-absorbent sheet
CZ242997A3 (en) Absorption article for distributing and retention of body fluids and process for producing thereof
WO2011133461A1 (en) Apparatus and method for receiving and transferring solid material
WO2019182526A1 (en) A non-sagging baby diaper
WO2022103343A1 (en) Multi-phase capacity management system with distributor channel for hygiene products
CN105050560B (en) Absorb hygienic object and the machine for manufacturing the object
WO2020142009A2 (en) Production system of partite core for absorbent articles
TR2023005025T2 (en) MULTI-PHASE CAPACITY MANAGEMENT SYSTEM WITH DISTRIBUTOR CHANNEL FOR HYGIENIC PRODUCTS
WO2023063897A1 (en) An absorbent hygiene product
JP2022117155A (en) absorbent article
JP2022106039A (en) Absorbent article
WO2022220758A1 (en) An absorbent core layer for hygienic articles and production method thereof
KR20040059244A (en) An ultra-thin firm type disposable diaper
EP1542636A1 (en) Absorbent article
CZ328999A3 (en) Absorption articles with removable - exchangeable parts

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20961748

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20230018

Country of ref document: MD

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20961748

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 523440743

Country of ref document: SA