Voluminous meltblown nonwoven fabric with improved stackability and storability
OwnerAxel Nickel, Norbert Jordinginventors
Life of this patent
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Abstract
The present invention relates to a meltblown nonwoven in the form of a sheet-like formation with a weight per unit area of 100 to 600 g/m2 and with a density of 5 to 50 kg/m3, wherein the meltblown nonwoven (10) has at least one spacer (12), extending at least on one of the surfaces thereof and/or at least partially in the direction of the thickness of the meltblown nonwoven (10) and arranged in such a way that the meltblown nonwoven (10) has a compressibility of less than 10% when a pressure of 50 Pa is applied to its surface.
Claims19
A meltblown nonwoven fabric (10) in the form of a planar structure with a weight per unit area from 100 to 600 g/m2 and with a density of from 5 to 50 kg/m3, the meltblown nonwoven fabric (10) comprising a first surface and a second surface separated by a thickness and having at least one spacer (12) extending on at least one of the first surface or the second surface and at least partially through the thickness of the meltblown nonwoven fabric (10), and the meltblown nonwoven fabric (10) has a compressibility of less than 10% when a pressure of 50 Pa is applied to a surface, compressibility being defined as:
- inital
-
-
- thickness
-
-
- minus
-
-
- thickness
-
-
- under
-
-
- pressure
- intial
-
-
- thickness
- ×
- 100
-
- %
- wherein the at least one spacer (12) is made of compressed nonwoven fabric (16) that is a depression formed in one of the first surface or the second surface of the meltblown nonwoven fabric (10) through the application of mechanical pressure, wherein side surfaces and bottom of the depression are delimited by compressed nonwoven fabric (16), and wherein the bottom of the depression being delimited by the compressed nonwoven fabric is between 0% and 10% of the thickness of the meltblown nonwoven fabric (10) from an other of the first surface or the second surface and or protrudes beyond the other of the first surface or the second surface of the meltblown nonwoven fabric (10).
A meltblown nonwoven fabric (10) in the form of a planar structure with a weight per unit area from 100 to 600 g/m2 and with a density of from 5 to 50 kg/m3, the meltblown nonwoven fabric (10) comprising a first surface and a second surface separated by a thickness and having at least one spacer (12) extending on at least one of the first surface or the second surface, and optionally at least partially through the thickness of the meltblown nonwoven fabric (10), and the meltblown nonwoven fabric (10) has a compressibility of less than 10% when a pressure of 50 Pa is applied to a surface, compressibility being defined as:
- inital
-
-
- thickness
-
-
- minus
-
-
- thickness
-
-
- under
-
-
- pressure
- intial
-
-
- thickness
- ×
- 100
-
- %
- wherein the at least one spacer (12) is made of a material other than a nonwoven fabric selected from one among metal, plastic, ceramic, wood, glass, and any combination of two or more of the aforementioned materials, the at least one spacer (12) being affixed to the first surface and/or the second surface with adhesive, a connecting element, thermal welding, or mechanical pressure.
A meltblown nonwoven fabric (10) in the form of a planar structure with a weight per unit area from 100 to 600 g/m2 and with a density of from 5 to 50 kg/m3, the meltblown nonwoven fabric (10) comprising a first surface and a second surface separated by a thickness and having at least one spacer(12) extending at least partially through the thickness of the meltblown nonwoven fabric(10), and optionally on at least one of the first surface or second surface, and the meltblown nonwoven fabric (10) has a compressibility of less than 10% when a pressure of 50 Pa is applied to a surface, compressibility being defined as:
- inital
-
-
- thickness
-
-
- minus
-
-
- thickness
-
-
- under
-
-
- pressure
- intial
-
-
- thickness
- ×
- 100
-
- %
- wherein the at least one spacer(12) is made of a material other than a nonwoven fabric selected from one among metal, plastic, ceramic, wood, glass, and any combination of two or more of the aforementioned materials, the at least one spacer(12) extending through an opening previously introduced in a pressure-free manner into the meltblown nonwoven fabric (10) and has a dimension being 90 to 100% of the thickness of the meltblown nonwoven fabric (10) or has a dimension comprising at least a part of the thickness of the meltblown nonwoven fabric (10) and protrudes beyond the first surface and/or the second surface.
A meltblown nonwoven fabric (10) in the form of a planar structure with a weight per unit area from 100 to 600 g/m2 and with a density of from 5 to 50 kg/m3, the meltblown nonwoven fabric (10) comprising a first surface and a second surface separated by a thickness and having at least one spacer (12) extending on at least one of the first surface or the second surface, and optionally at least partially through the thickness of the meltblown nonwoven fabric (10), and the meltblown nonwoven fabric (10) has a compressibility of less than 10% when a pressure of 50 Pa is applied to a surface, compressibility being defined as:
- inital
-
-
- thickness
-
-
- minus
-
-
- thickness
-
-
- under
-
-
- pressure
- intial
-
-
- thickness
- ×
- 100
-
- %
- wherein the at least one spacer (12) is additional nonwoven fabric placed onto at least a portion of an edge region of the meltblown nonwoven fabric(10) by folding over the meltblown nonwoven fabric (10) and affixing to the edge region by means of adhesive, thermal welding, or mechanical pressure, such that a total thickness in the at least the portion of the edge region is greater than the thickness of the meltblown nonwoven fabric prior to folding.
Dependencies are inferred from the claim text.