Compositions
AssigneeFiberLean Technologies Limited
InventorsJohn Claude HUSBAND, Per Svending, David Robert Skuse
Life of this patent
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Abstract
The present invention relates to compositions, such as filled and coated papers, comprising microfibrillated cellulose and inorganic particulate material.
Claims26
An article comprising:
- i) a paper product comprising a co-processed microfibrillated cellulose and inorganic particulate material composition;
- and
- ii) one or more functional coatings on the paper product.
The article of any one of the preceding claims, which comprises a packaging material.
The article of any one of the preceding claims, wherein the functional coating is a liquid barrier layer, for example, a water-based liquid barrier layer.
The article of any one of the preceding claims, wherein the paper product comprises from about 0.5 wt. % to about 50 wt. % of the co-processed microfibrillated cellulose and inorganic particulate material composition
A paper product comprising a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the paper product has:
- i) a first tensile strength greater than a second tensile strength of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- ii) a first tear strength greater than a second tear strength of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- iii) a first burst strength greater than a second burst strength of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- iv) first sheet light scattering coefficient greater than a second sheet light scattering coefficient of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- v) a first porosity less than a second porosity of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- vi) a first z-direction (internal bond) strength greater than a second z-direction (internal bond) strength of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition.
A coated paper product, wherein the coating comprises a co-processed microfibrillated cellulose and inorganic particulate material composition, and wherein the coated paper product has:
- i. a first gloss greater than a second gloss of the coated paper product comprising a coating composition devoid of the co-processed microfibrillated cellulose and inorganic 13 particulate material composition;
- and/or
- ii. a first stiffness greater than a second stiffness of the coated paper product comprising a coating composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- iii. a first barrier property which is improved compared to a second barrier property of the coated paper product comprising a coating composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition
A polymer composition comprising a co-processed microfibrillated cellulose and inorganic particulate material composition.
A papermaking composition comprising a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the papermaking composition has:
- (i) a first cationic demand lower than a second cationic demand of the papermaking composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- (ii) a first, first-pass retention greater than a second, first-pass retention of the papermaking composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition;
- and/or
- (iii) a first ash retention greater than a second ash retention of the papermaking composition devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition.
A papermaking composition comprising a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the papermaking composition is substantially devoid of retention aids.
A paper product comprising a co-processed microfibrillated cellulose and inorganic particulate material composition, wherein the paper product has a first formation index lower than a second formation index of the paper product devoid of the co-processed microfibrillated cellulose and inorganic particulate material composition.
The article, paper product, polymer composition, or papermaking composition of any one of the proceeding claims, wherein the inorganic particulate material comprises an alkaline earth metal carbonate or sulphate, such as calcium carbonate, magnesium carbonate, dolomite, gypsum, a hydrous kandite clay such as kaolin, halloysite or ball clay, an anhydrous (calcined) kandite clay such as metakaolin or fully calcined kaolin, talc, mica, huntite, hydromagnesite, ground glass, perlite or diatomaceous earth, or combinations thereof.
The article, paper product, polymer composition, or papermaking composition of any one of the proceeding claims, wherein the microfibrillated cellulose has a d50 ranging from about 25 μm to about 250 μm, more preferably from about 30 μm to about 150 μm, even more preferably from about 50 μm to about 140 μm, still more preferably from about 70 μm to about 130 μm, and most preferably from about 50 μm to about 120 μm.
The article, paper product, polymer composition, or papermaking composition of any one of the proceeding claims, wherein the microfibrillated cellulose has a monomodal particle size distribution.
The article, paper product, polymer composition, or papermaking composition of any one of the proceeding claims, wherein the microfibrillated cellulose has a multimodal particle size distribution.
Dependencies are inferred from the claim text.