Process for Manufacturing a Composition Comprising Cellulose Pulp Fibers and Thermoplastic Fibers

The invention relates to a process for manufacturing a composition comprising cellulose pulp fibers and thermoplastic fibers wherein said process comprises the step of: a) mixing a refined aqueous pulp suspension with a water suspension of thermoplastic fibers. The invention also relates to compositions and composite articles obtainable by said process. 1. A process for manufacturing a composition comprising cellulose pulp fibers and thermoplastic fibers wherein said process comprises the step of:a) mixing a refined pulp suspension with a water suspension of non-refined thermoplastic fibers.2. A process according to claim 1 , wherein the pulp suspension has a concentration from 0.1 weight % to 4 weight %.3. A process according to claim 1 , wherein the pulp of the pulp suspension is wood pulp.4. A process according to claim 1 , wherein the pulp of the pulp suspension is never-dried wood pulp.5. A process according to claim 4 , wherein the never-dried wood pulp is never-dried softwood pulp or never-dried softwood kraft pulp.6. A process according to claim 1 , wherein the water suspension of thermoplastic fibers has concentration from 2 to 5 weight %.7. A process according to claim 1 , wherein the thermoplastic fibers are fibers of a thermoplastic selected from the group consisting of a polyolefin claim 1 , a polyester claim 1 , a polycarbonate claim 1 , a polyvinyl and a copolymer or mixture thereof.8. A process according to claim 7 , wherein the polyolefin is selected from polyethylene and polypropylene.9. A process according to claim 7 , wherein the polyester is selected from polyhydroxybutyrat (PHB) and polylactic acid (PLA).10. A process according to claim 1 , wherein the thermoplastic fibers are PLA fibers.11. A process according to claim 1 , wherein said process further comprises the steps of:b) dewatering the composition into a composite article, andc) drying the composite article.12. A composition made by the process of .13. A composite article comprising the ...

Process for Manufacturing a Composite Article Comprising Cellulose Pulp Fibers and a Thermoplastic Matrix

The present invention relates to a process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix, wherein said process comprises the steps of: a) mixing a refined aqueous pulp suspension with a water suspension of thermoplastic fibers into a composition, b) forming the composition into a fiber web, c) dewatering the fiber web, d) drying the fiber web, and e) heating and pressing the dried fiber web from step d) to melt said thermoplastic fibers into a thermoplastic matrix and form a composite article. 1. A process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix , wherein said process comprises the steps of:a) mixing a refined aqueous pulp suspension with a water suspension of non-refined thermoplastic fibers into a composition,b) forming the composition into a fiber web,c) dewatering the fiber web,d) drying the fiber web, ande) heating and pressing the dried fiber web from step d) to melt said thermoplastic fibers into a thermoplastic matrix and form a composite article.2. A process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix , wherein said process comprises the steps of:a) mixing a refined aqueous pulp suspension with a water suspension of non-refined thermoplastic fibers into a composition,b) dewatering the composition into an intermediate composite article,c) drying the intermediate composite article,d) suspending the intermediate composite article in water,e) forming the intermediate composite article obtained from step d) into a fiber web and drying said fiber web, andf) heating and pressing the fiber web from step e) to melt said thermoplastic fibers into a thermoplastic matrix and form a composite article.3. A process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix from an intermediate composite article that has been formed by the steps of:mixing a refined aqueous ...

METHOD FOR PRODUCTION OF TANNIC SUBSTANCES AND A BARK PRODUCT WITH ENHANCED FUEL VALUE

A method for production of at least one tannic product and a bark product having enhanced fuel value is disclosed. The method comprises disintegrating bark; compressing the disintegrated bark to recover a first liquid extract comprising tannic substances; impregnating the compressed bark with a first aqueous impregnation composition at a pH below 7, and at temperature within the range of 45-80° C.; dewatering the impregnated bark to recover a second liquid extract comprising tannic substances and a dewatered bark product; recirculating at least a part of the second liquid extract to the impregnation step, wherein the first aqueous impregnation composition comprises a mixture of said recirculated part of the second liquid extract and optionally fresh water; optionally combining said first liquid extract with the non-recirculated part of said second liquid extract; and adding sulphite salt to said first liquid extract and to said non-recirculated part of said second liquid extract. 1. A method for production of at least one tannic product and a bark product having enhanced fuel value comprising the steps of:(a) disintegrating bark to an average bark particle size of 1-200 mm;(b) compressing the disintegrated bark to recover a first liquid extract comprising tannic substances;(c) impregnating the compressed bark with a first aqueous impregnation composition during 10-120 minutes, at a pH below 7, and at temperature within the range of 45-80° C.;(d) dewatering the impregnated bark to recover a second liquid extract comprising tannic substances and a dewatered bark product;(e) recirculating at least a part of the second liquid extract to the impregnation step, wherein the first aqueous impregnation composition comprises a mixture of said recirculated part of the second liquid extract and optionally fresh water;(f) optionally combining said first liquid extract with the non-recirculated part of said second liquid extract; and(g) adding a sulphite salt to said first liquid ...

Process for manufacturing a composition comprising cellulose pulp fibers and thermoplastic fibers

Process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix

Process for manufacturing a composition comprising cellulose pulp fibers and thermoplastic fibers

Process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix

Process for manufacturing a composition comprising cellulose pulp fibers and thermoplastic fibers

Process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix

The present invention relates to a process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix, wherein said process comprises the steps of: a) mixing a refined aqueous pulp suspension with a water suspension of thermoplastic fibers into a composition, b) forming the composition into a fiber web, c) dewatering the fiber web, d) drying the fiber web, and e) heating and pressing the dried fiber web from step d) to melt said thermoplastic fibers into a thermoplastic matrix and form a composite article.

Method for producing powdered cellulose

The present invention relates to a method for producing powdered cellulose. The method comprises the steps of providing dry pulp starting material, heat treating the dry pulp starting material to a temperature of 100-200 °C, for less than 1 hour, and refining the heat-treated dry pulp starting material to particles having d97 < 500 µm.

Method for processing bark press water from sawmills and/or pulp mills

A method for processing a bark press water from sawmills and/or pulp mills is disclosed. According to the disclosure, the method comprises concentrating the bark press water to a level of at least 10 % dry weight and thereby providing a first fraction of concentrated bark press water, comprising tannic compounds; and a second fraction of purified bark press water.

Método para produção de um produto tânico e um produto de casca

um método para a produção de pelo menos um produto tânico e um produto de casca com valor de combustível aumentado é divulgado. de acordo com a invenção, o método compreende as etapas de desintegração da casca; comprimir a casca desintegrada para recuperar um primeiro extrato líquido compreendendo substâncias tânicas; impregnar a casca comprimida com uma primeira composição de impregnação aquosa a um ph abaixo de 7 e a temperatura dentro da faixa de 45 a 80°c; desidratar a casca impregnada para recuperar um segundo extrato líquido compreendendo substâncias tânicas e um produto de casca desidratada; recircular pelo menos uma parte do segundo extrato líquido para a etapa de impregnação, em que a primeira composição de impregnação aquosa compreende uma mistura da dita parte recirculada do segundo extrato líquido e opcionalmente água fresca; opcionalmente combinar o dito primeiro extrato líquido com a parte não recirculada do dito segundo extrato líquido; e adicionar sal de sulfito ao dito primeiro extrato líquido e à dita parte não recirculada do dito segundo extrato líquido, ou aos primeiro e segundo extratos líquidos opcionalmente combinados em um nível de l a 25% em peso para prover um primeiro produto tânico e um segundo produto tânico ou um produto tânico combinado. também o produto tânico e o produto de casca obtidos a partir do método é divulgado.

Method for producing powdered cellulose

The present invention relates to a method for producing powdered cellulose. The method comprises the steps of providing dry pulp starting material, heat treating the dry pulp starting material to a temperature of 100-200° C., for less than 1 hour, and refining the heat-treated dry pulp starting material to particles having d97<500 μm.

Method for producing powdered cellulose

The present invention relates to a method for producing powdered cellulose. The method comprises the steps of providing dry pulp starting material, heat treating the dry pulp starting material to a temperature of 100-200 °C, for less than 1 hour, and refining the heat-treated dry pulp starting material to particles having d97 < 500 µm.

Method for processing bark press water from sawmills and/or pulp mills

A method for processing a bark press water from sawmills and/or pulp mills is disclosed. According to the disclosure, the method comprises a) filtration of the bark press water to provide a bark press water filtrate having a particle size of less than 100 µm, and b) concentrating the bark press water filtrate to a level of at least 10 % dry weight and thereby providing a first fraction of concentrated bark press water, comprising tannic compounds; and a second fraction of purified bark press water.

Method for processing bark press water from sawmills and/or pulp mills

A method for processing a bark press water from sawmills and/or pulp mills is disclosed. According to the disclosure, the method comprises a) filtration of the bark press water to provide a bark press water filtrate having a particle size of less than 100 µm, and b) concentrating the bark press water filtrate to a level of at least 10 % dry weight and thereby providing a first fraction of concentrated bark press water, comprising tannic compounds; and a second fraction of purified bark press water.

Process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix

The present invention relates to a process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix, wherein said process comprises the steps of: a) mixing a refined aqueous pulp suspension with a water suspension of thermoplastic fibers into a composition, b) forming the composition into a fiber web, c) dewatering the fiber web, d) drying the fiber web, and e) heating and pressing the dried fiber web from step d) to melt said thermoplastic fibers into a thermoplastic matrix and form a composite article.