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Apparatus and process for forming absorbent cores for absorbent sanitary products

An absorbent core, superabsorbent technology, used in the production of absorbent hygiene products, can solve the problems of difficult, considerable structural complexity, changing the concentration of superabsorbent polymers, etc.

Inactive Publication Date: 2014-09-24
FAMECCANICA DATA SPA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] With conventional types of techniques for forming absorbent cores in which the pad formed of cellulose fleece is oriented parallel to the direction of travel, it is difficult to vary the concentration of superabsorbent polymer along the longitudinal direction of the pad
Indeed, in order to vary the concentration of superabsorbent polymer in the longitudinal direction on pads moving parallel to their longitudinal direction, it would be necessary to provide a dispenser capable of varying the amount of superabsorbent polymer supplied as a function of time, which would Involves considerable structural complexity

Method used

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  • Apparatus and process for forming absorbent cores for absorbent sanitary products
  • Apparatus and process for forming absorbent cores for absorbent sanitary products
  • Apparatus and process for forming absorbent cores for absorbent sanitary products

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Embodiment Construction

[0013] refer to figure 1 , designated by 10 is an apparatus for producing absorbent cores, forming part of a production line for producing absorbent hygiene articles. The apparatus 10 comprises a forming section 12 in which the absorbent core is formed and an application station 14 in which the absorbent core from section 12 is applied to a continuous support web moving in the longitudinal direction X. The forming section 12 comprises a forming wheel 16 rotatable in the direction shown by arrow A about a transverse axis orthogonal to the longitudinal direction X. As shown in FIG. The forming wheel 16 is provided on its periphery with holes connected to a suction source.

[0014] The forming section 12 includes a first conduit 18 for supplying cellulose fleece to the forming wheel 16 and a second conduit 20 for supplying a dispensed amount of superabsorbent polymer. The first duct 18 has an end 22 facing towards the periphery forming the wheel 16 . The second duct 20 compris...

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Abstract

An apparatus for forming absorbent cores (54) that include absorbent pads (50) of cellulose fluff and superabsorbent polymers, comprising a forming section (12) configured for forming a continuous moving chain (52) of absorbent pads (50) oriented in a direction transverse with respect to the direction of movement (X) of the chain (52), the forming section (12) comprising a dispenser device (56) configured for applying superabsorbent polymers on said absorbent pads (50) oriented in a transverse direction at a variable concentration in a direction (Y) transverse with respect to said direction of movement (X) of the continuous chain (52).

Description

technical field [0001] The present invention relates to the production of absorbent hygiene articles and to an apparatus and process for forming absorbent cores comprising cellulose fleece and superabsorbent polymer. Background technique [0002] A conventional technique for forming an absorbent core comprising cellulose fleece and superabsorbent polymer consists of forming a continuous moving chain comprising a chain of cellulose fleece oriented parallel to the direction of movement of said chain. pad. A dispensed amount of superabsorbent polymer is applied to the moving absorbent pad. Usually, the formation of the absorbent pad of cellulose fleece and the application of the superabsorbent polymer is carried out on a forming wheel capable of rotating around its own axis at a peripheral speed equal to the advancing speed of the continuous chain. [0003] Conventional techniques for forming absorbent pads with superabsorbent polymers envisage a substantially constant concen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/15
CPCA61F13/1565B01J20/3291A61F13/15658A61F13/15634A61F13/15699
Inventor F.达亚邦特G.德劳雷蒂斯
Owner FAMECCANICA DATA SPA
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