Ahlstrom

Helsinki, Finland
Helsinki, Finland
SEARCH FILTERS
Time filter
Source Type

A cellulose fiber-based substrate, at least one side of which is coated with an aqueous mixture composed of: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, b) at least one lactone substituted with at least one linear or branched and/or cyclic C8-C30 hydrocarbon chain which may contain heteroatoms, c)at least one crosslinking agent. A method of production and use thereof.


A cellulosic fiber-based adhesive tape substrate, at least one side of which is coated with an aqueous mixture of: a) at least one organic polymer having pendant groups with at least one vinyl function; b) at least one polysiloxane comprising at least one hydrogenosiloxane monomer -(O-SiR1H)-, wherein R1 is a linear or branched and/or cyclic hydrocarbon chain which may contain heteroatoms; c) at least one hydrosilylation catalyst.


Patent
Ahlstrom | Date: 2017-03-22

A wall covering, a method of producing it and a method of covering a wall. The wall covering comprises a planar substrate, such as a nonwoven base substrate, having a front, and a back facing opposite the front. There is a barrier layer on the back of the substrate and an adhesive layer superimposed on the barrier layer. The adhesive layer comprises a first polymer component, a second polymer component, the first polymer component being a non crosslinked polymer and said second polymer component being a crosslinked polymer exhibiting properties of superabsorbency. The adhesive exhibits when exposed to water, a strength sufficient for binding to a wall substrate and a glide resistance low enough for allowing repositioning of the wall cover by sliding the wallcover on the wall without having to lift it up over a period of time of at least 5 minutes.


Patent
Etex Building Performance International SAS and Ahlstrom | Date: 2017-08-16

The invention relates to a fibrous mat facer for preparing a gypsum board, to a gypsum board comprising said mat facer and to a system comprising said gypsum board. The fibrous mat comprises at least one ply of a non-woven fabric, and a binder composition, wherein the binder composition represents from 10 to 40 wt% of the total weight of the mat. The binder composition comprises a copolymer comprising a co-monomer unit of a vinyl ester of an alpha branched aliphatic monocarboxylic acid, said copolymer being present in an amount from 25 to 100 wt% of the binder composition weight.


Patent
Ahlstrom | Date: 2015-05-15

A wall covering, a method of producing it and a method of covering a wall. The wall covering comprises a planar substrate, such as a nonwoven base substrate, having a front, and a back facing opposite the front. There is a barrier layer on the back of the substrate and an adhesive layer superimposed on the barrier layer. The adhesive layer comprises a first polymer component, a second polymer component, the first polymer component being a non crosslinked polymer and said second polymer component being a crosslinked polymer exhibiting properties of superabsorbency. The adhesive exhibits when exposed to water, a strength sufficient for binding to a wall substrate and a glide resistance low enough for allowing repositioning of the wall cover by sliding the wallcover on the wall without having to lift it up over a period of time of at least 5 minutes.


Patent
Ahlstrom | Date: 2016-04-08

A non-woven web including: a first surface area of the web including hydro-embossments and devoid of thermo-embossments, wherein the first surface area covers five to ninety-five percent of a total surface area of the non-woven web, and a second surface area of the web including thermo-embossments and devoid of hydro-embossments, wherein the second surface area covers at least two percent of the total surface area of the non-wove web and wherein the first surface area does not overlap the second surface area.


A unidirectional reinforcement and a method of producing a unidirectional reinforcement that may be used in applications where high quality and strength is required. The unidirectional reinforcement includes transversely arranged discrete Z-direction resin flow facilitating means running back and forth between the longitudinal edges of the sheets, and traveling between the groups of rovings and between the top and bottom surfaces of the unitary web.


Patent
Ahlstrom | Date: 2016-06-22

A dye-capturing laundry aid comprising:a support in the form of a sheet comprising water-insoluble fibers;a first substance anchored to the support, wherein the first substance has moieties that are cationic when exposed to water at one or more pH values in the pH range of from 6 to; anda second substance that coats the first substance, wherein the second substance is a polymer that remains substantially coated upon the first substance when the laundry aid is exposed to water over the pH range of from 6 to 10, and at least 50% of the repeating units in the polymer have a structure according to the following Formula (1):


A non woven web containing water insoluble nanofibers and/or microfibers obtained by an electrospinning process using water based solution containing at least two components, a first component having carboxylic acid and/or anhydride functionalities and a second component having primary and/or secondary amino functionalities, the web being cured upon a heat treatment. Application: filtration and separation.


Patent
Ahlstrom | Date: 2016-08-17

The present invention relates to a colorant composition comprising a cationic polyamine polymer, a crosslinker polymer and a dye. The composition can be used to impart color to a wide variety of fiber-containing substrates with a high degree of color-fastness.

Loading Ahlstrom collaborators
Loading Ahlstrom collaborators