Manufacturing line for nonwoven fabric
AssigneeSuominen Corporation
InventorsGian Luca Polosa, Avinav G. Nandgaonkar, Pramod U. Shanbhag
Life of this patent
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Abstract
Nonwoven fabric manufacturing line, which comprises a forming device for forming a fibre web on a moving web-forming base and a spunlacing device for reinforcing the web. Further, the line comprises at least one first drying device for drying the web and a calender for forming patterning in the web. The manufacturing line comprises at least one second drying device for drying the calendered web, which second drying device is located after the calender in the direction of travel of the web.
Claims15
A nonwoven fabric manufacturing line, comprising:
- a forming device configured to deposit unconsolidated fibres directly onto a moving web-forming base to thereby form a web,
- a spunlacing device for reinforcing the web,
- a first drying device for drying the web,
- a calender for forming patterning in the web via direct contact of a calender roll with the web to thereby for a calendered web, and
- a second drying device configured to dry the calendered web.
A method for manufacturing a nonwoven fabric, comprising:
- depositing unconsolidated fibres directly onto a moving web-forming base to form a web thereon,
- reinforcing the web by a spunlacing operation,
- drying the web with a first drying device,
- forming patterning in the web by a calendering operation in which the web is in direct contact with a calender roll to thereby create a calendered web, and
- drying the calendered web via a second drying device.
A method for manufacturing a nonwoven fabric, comprising:
- depositing unconsolidated fibres directly onto a moving web-forming base to form a web thereon;
- reinforcing the web by a spunlacing operation;
- drying the web with a first drying device;
- and
- forming patterning in the web by a calendering operation in which the web is in direct contact with a calender roll to thereby create a calendered web;
- wherein pressure of the calendering operation reduces an amount of overlapping of cellulose molecule chains in fibres in calendered areas of the web relative to an amount of overlapping of cellulose molecule chains in fibres of uncalendered areas of the web;
- and
- wherein the method further comprises drying the calendered web via a second drying device and rapidly enough to ensure the amount of overlapping of cellulose molecule chains in fibres in calendered areas of the web remains below the amount of overlapping of cellulose molecule chains in fibres of uncalendered areas of the web.
Dependencies are inferred from the claim text.