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Fibrous material with high functional particle load

a functional particle and fibrous material technology, applied in the field of fibrous materials, can solve the problems of large manufacturing process complexity, small effective pore size, and inability to manufacture cellulose materials in preformed rolls, and achieve the effects of improving fibrous materials, high load of functional particles, and high pliability

Inactive Publication Date: 2005-07-14
BKI HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"This patent describes a material and a process for making it, as well as an absorbent core. The material is made up of a combination of SAP (Super Absorbent Polymer) fibers, binder, and optionally other materials like carrier or a layer of synthetic fibers. The material has a specific pliability and thickness, and can be used in various absorbent products. The process involves depositing the material on a support and optionally heating it to activate the binder. The absorbent core is made of the material described in the patent, which can be produced in a continuous process involving airlaying and adhesives. The technical effects of this patent are the creation of a material with specific properties that make it useful in absorbent products, and a process for making it efficiently."

Problems solved by technology

Such higher density cores do not absorb liquid as rapidly as lower density cores because the compacting of the core (densification) results in smaller effective pore size.
Multiple layer absorbent core designs involve a more complicated manufacturing process.
Such cellulose material is generally not available in preformed roll form because it exhibits insufficient web strength, owing to its lack of interfiber bonding or entanglement, to be unwound directly onto and handled in absorbent pad-making equipment.
At high particle loading, however, the core structures exhibit poor particle containment.
This can result in the fouling of manufacturing and converting equipment as well as negative consumer perception of the product.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Fibrous material with high functional particle load
  • Fibrous material with high functional particle load
  • Fibrous material with high functional particle load

Examples

Experimental program
Comparison scheme
Effect test

example 1

Basis Weight 323 μgsm, Caliper 1.2 mm

[0116] Layer 6: 10 gsm FF, 2.8 gsm bico, 1.0 gsm latex sprayed on top [0117] Between head SAP feeder 5: 52.6 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0118] Layer 5: 3.0 gsm FF, 1.0 gsm bico [0119] Between head SAP feeder 4: 52.6 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0120] Layer 4: 3.0 gsm FF, 1.0 gsm bico [0121] Between head SAP feeder 3: 52.6 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0122] Layer 3: 3.0 gsm FF, 1.0 gsm bico [0123] Between head SAP feeder 2: 52.6 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0124] Layer 2: 3.0 gsm FF, 1.0 gsm bico [0125] Between head SAP feeder 1: 52.6 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart [0126] Layer 1: 9 gsm FF, 3.2 gsm bico [0127] Carrier: 18 gsm cellulosic tissue [0128] Sumitomo SA60S SAP was used in this example.

example 2

Basis weight 318 μm. Caliper 0.9 mm

[0129] Layer 6: 6.0 gsm FF, 1.5 gsm bico, 1.0 gsm latex sprayed on top [0130] Between head SAP feeder 5: 54.4 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0131] Layer 5: 2.0 gsm FF, 0.8 gsm bico [0132] Between head SAP feeder 4: 54.4 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0133] Layer 4: 2.0 gsm FF, 0.8 gsm bico [0134] Between head SAP feeder 3: 54.4 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0135] Layer 3: 2.0 gsm FF, 0.8 gsm bico [0136] Between head SAP feeder 2: 54.4 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0137] Layer 2: 2.0 gsm FF, 0.8 gsm bico [0138] Between head SAP feeder 1: 54.4 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart [0139] Layer 1: 6.2 gsm FF, 2.1 gsm bico [0140] Carrier: 18 gsm cellulosic tissue [0141] Sumitomo SA60S SAP was used in this example.

example 4

Basis weight 323 μm, Caliper 1.3 mm

[0142] The first pass through the three head airlaid forming system laid the materials in the amounts indicated below in reverse order, starting with Head 1 laying a FF and bico mixture on the cellulosic carrier tissue. In the second pass, layer 4 was laid by Head 3. [0143] Layer4 (Head 3): 16.8 gsm PET Wellman 213×1 (6 dpf), 3.2 latex Airflex 124 [0144] Layer 3 (Head 3): 7.0 gsm FF, 3.0 gsm bico [0145] Between head SAP feeder 2: 127.5 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart. [0146] Layer 2 (Head 2): 7.0 gsm FF, 3.0 gsm bico [0147] Between head SAP feeder 1: 127.5 gsm SAP, placed in 1.27 cm lanes, spaced 1.27 cm apart [0148] Layer 1 (Head 1): 7.0 gsm FF, 3.0 gsm bico [0149] Carrier: 18 gsm cellulosic tissue [0150] Sumitomo SA60S SAP was used in this example.

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PUM

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Abstract

This invention relates to fibrous absorbent articles containing particles useful in the manufacture of disposable diapers, adult incontinence pads, sanitary napkins and the like. More particularly, the invention is directed to a multistrata fibrous web including a plurality of first strata including matrix fibers and thermoplastic fibers and a plurality of second strata including functional particles arranged in separated lanes. The first and second strata alternate through the web and the lanes of the second strata are arranged such that such that the lanes of adjacent second strata do not superimpose.

Description

FIELD OF THE INVENTION [0001] This invention relates to fibrous material, including fibrous structures containing particle, which are useful in the manufacture of disposable diapers, adult incontinence pads, sanitary napkins and the like. More particularly, the invention is directed to fibrous articles having very high loads of particles, particularly particles of superabsorbent polymer. BACKGROUND OF THE INVENTION [0002] Absorbent articles such as disposable diapers, adult incontinence pads, sanitary napkins, panty liners and the like, are generally provided with an absorbent core to receive and retain body liquids. The absorbent core is usually sandwiched between a liquid pervious top sheet, whose function is to allow the passage of fluid to the core, and a liquid impervious backsheet, whose function is to contain the fluid and to prevent it from passing through the absorbent article to the garment of the wearer of the absorbent article. [0003] An absorbent core for diapers and ad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F13/15D04H3/00D04H13/00
CPCA61F13/15658A61F13/53D04H13/002A61F13/535A61F2013/530562A61F13/5323D04H1/407D04H1/732Y10T442/60
Inventor DUTKIEWICZ, JACEK KKALMON, MICHAELBOEHMER, BRIAN E.
Owner BKI HLDG