IT202100032753A1 - TOTALLY CLOSURE PAPER MATERIAL PARTICULARLY FOR USE IN THE FOOD INDUSTRY - Google Patents
TOTALLY CLOSURE PAPER MATERIAL PARTICULARLY FOR USE IN THE FOOD INDUSTRY Download PDFInfo
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- IT202100032753A1 IT202100032753A1 IT102021000032753A IT202100032753A IT202100032753A1 IT 202100032753 A1 IT202100032753 A1 IT 202100032753A1 IT 102021000032753 A IT102021000032753 A IT 102021000032753A IT 202100032753 A IT202100032753 A IT 202100032753A IT 202100032753 A1 IT202100032753 A1 IT 202100032753A1
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- Prior art keywords
- paper material
- weight
- base support
- material according
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- 239000000463 material Substances 0.000 title claims description 45
- 235000013305 food Nutrition 0.000 title description 4
- 239000000123 paper Substances 0.000 claims description 46
- 239000000203 mixture Substances 0.000 claims description 22
- 241001311547 Patina Species 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 229920003043 Cellulose fiber Polymers 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- 229920002994 synthetic fiber Polymers 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 11
- 239000011256 inorganic filler Substances 0.000 claims description 11
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 11
- 229920001296 polysiloxane Polymers 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 10
- 239000003925 fat Substances 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000012209 synthetic fiber Substances 0.000 claims description 6
- 239000000499 gel Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- YIXSKDRXJTZCHT-UHFFFAOYSA-N 2-acetylbutanedioic acid Chemical compound CC(=O)C(C(O)=O)CC(O)=O YIXSKDRXJTZCHT-UHFFFAOYSA-N 0.000 claims description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- -1 alkyl ketene dimer Chemical compound 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 3
- 239000012764 mineral filler Substances 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000004381 surface treatment Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000011111 cardboard Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/32—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Closures For Containers (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
Description
DESCRIZIONE DESCRIPTION
Il presente trovato ? relativo ad un materiale cartaceo particolarmente ma non esclusivamente idoneo all?uso nell?industria alimentare anche a contatto con gli alimenti. The present found? relating to a paper material that is particularly but not exclusively suitable for use in the food industry, including in contact with food.
Nel settore cartario ? costante la ricerca di nuovi tipi di carte e cartoncini ad uso tecnico aventi capacit? e/o finiture particolari, specie destinati a barriere di gas, gel e liquidi. In the paper industry? there is a constant search for new types of paper and cardboard for technical use with and/or particular finishes, especially intended for gas, gel and liquid barriers.
Sono da tempo presenti sul mercato prodotti cartacei ottenuti con fibre di cellulosa e/o fibre di cotone e/o sintetici, e con additivi a base di polimeri sintetici e/o derivanti dal petrolio che sono accoppiati o estrusi con polimeri a base derivanti dal petrolio allo scopo di contenere e/o proteggere liquidi e/o gel di varia natura come soluzioni cosmetiche o prodotti alimentari. Paper products obtained with cellulose fibers and/or cotton and/or synthetic fibers, and with additives based on synthetic and/or petroleum-derived polymers which are coupled or extruded with petroleum-based polymers have long been present on the market. for the purpose of containing and/or protecting liquids and/or gels of various kinds such as cosmetic solutions or food products.
Tali prodotti per? non possono costituire la struttura principale laminata e non possono essere accoppiati con contenitori termosaldabili o incollabili mantenendo le peculiari caratteristiche di rigidit? e al contempo fragilit? necessarie per una rottura calibrata del contenitore contenente il gel e/o il liquido di varia natura. Such products for? they cannot constitute the main laminate structure and cannot be coupled with heat-sealable or glueable containers while maintaining the peculiar characteristics of rigidity? and at the same time fragility? necessary for a calibrated breakage of the container containing the gel and/or liquid of various kinds.
Si avverte pertanto l?esigenza di produrre un materiale cartaceo che possa superare i limiti dell?arte nota. There is therefore a need to produce paper material that can overcome the limits of the prior art.
Compito tecnico che si propone la presente invenzione ?, pertanto, quello di realizzare un materiale cartaceo di diverse grammature che consenta di eliminare gli inconvenienti tecnici lamentati della tecnica nota. The technical task proposed by the present invention is, therefore, to create a paper material of different weights which allows the elimination of the technical drawbacks complained of in the prior art.
Nell?ambito di questo compito tecnico uno scopo dell?invenzione ? quello di realizzare un materiale cartaceo di diverse grammature con propriet? intrinsecamente di estrema resistenza meccanica, capacit? di piega senza lacerazioni, propriet? barriera funzionale all?acqua, grassi, oli e gas. In the context of this technical task, one purpose of the invention is? that of creating a paper material of different weights with properties? intrinsically of extreme mechanical resistance, capacity? fold without tears, properties? functional barrier to water, fats, oils and gases.
Un altro scopo dell?invenzione ? quello di realizzare un materiale cartaceo di diverse grammature con capacit? di essere termosaldabile e accoppiabile mantenendo le suddette propriet? di estrema resistenza meccanica, capacit? di piega senza lacerazioni, propriet? barriera funzionale all?acqua, grassi, oli e gas. Non ultimo scopo dell?invenzione ? quello di realizzare un materiale cartaceo di diverse grammature non solo con capacit? di essere termosaldabile e accoppiabile mantenendo le suddette propriet? di estrema resistenza meccanica, capacit? di piega senza lacerazioni, propriet? barriera funzionale all?acqua, grassi, oli e gas ma anche con una accettabile stampabilit?. Another purpose of the invention? that of creating a paper material of different weights with capacity? to be heat-weldable and combinable while maintaining the aforementioned properties? of extreme mechanical resistance, capacity? fold without tears, properties? functional barrier to water, fats, oils and gases. Not the least purpose of the invention? that of creating paper material of different weights not only with capacity? to be heat-weldable and combinable while maintaining the aforementioned properties? of extreme mechanical resistance, capacity? fold without tears, properties? functional barrier to water, fats, oils and gases but also with acceptable printability.
Il compito tecnico, nonch? questi ed altri scopi, secondo la presente invenzione vengono raggiunti realizzando un materiale cartaceo caratterizzato dal fatto di comprendere un supporto di base comprendente una miscela di fibre di cellulosa e altre fibre naturali e/o sintetiche, almeno una sostanza polimerica atta a conferire a supporto di base resistenza meccanica, idroresistenza e barriera funzionale all?acqua, grassi, oli e gas, e una carica inorganica, detto supporto di base presentando una porosit? compresa tra 50 e 20000 sec secondo il metodo Gurley ed essendo rivestito da almeno una patina superficiale comprendente come collante almeno un silicone da 0,1% in peso a 5% in peso del materiale cartaceo, atto a conferire alla patina propriet? barriera funzionale all?acqua, grassi, oli e gas, resistenza meccanica e capacit? di piega senza lacerazioni. Preferibilmente detta patina include come collante in aggiunta a detto silicone almeno uno tra un amido, un poliolo, un polimero acrilico, un polimero poliuretanico, una cera sintetica o naturale. The technical task, as well as? these and other purposes, according to the present invention, are achieved by creating a paper material characterized by the fact that it comprises a base support comprising a mixture of cellulose fibers and other natural and/or synthetic fibres, at least one polymeric substance suitable for providing a support with basic mechanical resistance, water resistance and functional barrier to water, fats, oils and gases, and an inorganic filler, called the basic support presenting a porosity? between 50 and 20,000 sec according to the Gurley method and being covered by at least one surface patina including as glue at least a silicone of 0.1% by weight to 5% by weight of the paper material, capable of giving the patina properties functional barrier to water, fats, oils and gases, mechanical resistance and capacity fold without tears. Preferably said patina includes as a glue in addition to said silicone at least one of a starch, a polyol, an acrylic polymer, a polyurethane polymer, a synthetic or natural wax.
Preferibilmente detta miscela di fibre comprende fibre di cellulosa, fibre di cotone e fibre sintetiche. Preferably said fiber mixture comprises cellulose fibres, cotton fibers and synthetic fibres.
Preferibilmente detta sostanza polimerica comprende una e/o pi? resine a base di colofonia e/o di alchil chetene dimero e/o di acido acetil succinico e/o di epocloridrina e/o di carbossimetilcellulosa. Preferably said polymeric substance comprises one and/or more resins based on rosin and/or alkyl ketene dimer and/or acetyl succinic acid and/or epochlorohydrin and/or carboxymethylcellulose.
Preferibilmente detta carica inorganica ? una carica minerale comprendente una o pi? sostanze scelte nel gruppo costituito da carbonati, caolini, talco, loro miscele. Preferably said inorganic filler? a mineral filler comprising one or more? substances chosen from the group consisting of carbonates, kaolins, talc and their mixtures.
In un modo di realizzazione preferito dell?invenzione il contenuto di fibre di cellulosa ? compreso tra il 50% e 90% in peso. In a preferred embodiment of the invention the cellulose fiber content is between 50% and 90% by weight.
Altre caratteristiche della presente invenzione sono definite, inoltre, nelle rivendicazioni di seguito riportate. Other characteristics of the present invention are also defined in the claims reported below.
Ulteriori caratteristiche e vantaggi dell?invenzione risulteranno maggiormente evidenti dalla descrizione di una forma di esecuzione preferita ma non esclusiva del materiale cartaceo secondo il trovato, nel seguito illustrata a titolo indicativo e non limitativo. Further characteristics and advantages of the invention will be more evident from the description of a preferred but not exclusive embodiment of the paper material according to the invention, illustrated below for indicative and non-limiting purposes.
La presente invenzione si riferisce ad un materiale cartaceo (carta/cartoncino) che, grazie ad un impasto appositamente studiato, ad uno specifico trattamento superficiale e ad un metodo di produzione presenta una struttura con estrema resistenza meccanica, con capacit? di essere piegato senza lacerazioni della patina per garantire adeguata protezione da acqua, grassi , oli e gas. The present invention refers to a paper material (paper/cardboard) which, thanks to a specifically designed mixture, a specific surface treatment and a production method, presents a structure with extreme mechanical resistance, with to be folded without tearing the patina to ensure adequate protection from water, fats, oils and gases.
Il materiale cartaceo dell?invenzione risulta inoltre stampabile con una accettabile qualit? di stampa e consente di ottenere effetti grafici particolari, difficili da ottenere con tradizionali materiali cartacei trattati. The paper material of the invention is also printable with an acceptable quality. printing and allows you to obtain particular graphic effects, which are difficult to obtain with traditional treated paper materials.
In dettaglio, il materiale cartaceo del trovato comprende un supporto base comprendente una miscela di fibre cellulosiche con fibre naturali e/o sintetiche, almeno una sostanza polimerica, atta a conferire alla miscela di fibre resistenza meccanica (a secco e ad umido) ed idroresitenza, e una carica inorganica, atta a conferire al materiale buone caratteristiche di macchinabilit? e stabilit? chimica. Secondo un aspetto particolarmente vantaggioso dell?invenzione, tale supporto di base presenta una porosit? compresa tra 50 e 20000 sec secondo il metodo Gurley ed ? rivestito da almeno una patina superficiale comprendente come collante almeno un silicone da 0,1% in peso a 5% in peso del materiale cartaceo, atto a conferire alla patina propriet? barriera funzionale all?acqua, grassi, oli e gas, resistenza meccanica e capacit? di piega senza lacerazioni. In detail, the paper material of the invention comprises a base support comprising a mixture of cellulosic fibers with natural and/or synthetic fibres, at least one polymeric substance, suitable for giving the mixture of fibers mechanical resistance (dry and wet) and water resistance, and an inorganic filler, designed to give the material good machinability characteristics? and stability? chemistry. According to a particularly advantageous aspect of the invention, this base support has a porosity between 50 and 20,000 sec according to the Gurley method and ? covered with at least a surface patina comprising at least a silicone of 0.1% by weight to 5% by weight of the paper material as a glue, capable of giving the patina properties functional barrier to water, fats, oils and gases, mechanical resistance and capacity fold without tears.
Il contenuto di fibre di cellulosa nel materiale cartaceo ? compreso tra il 50% e 90% in peso. The cellulose fiber content in the paper material? between 50% and 90% by weight.
La miscela di fibre comprende preferibilmente fibre di cellulosa, fibre di cotone e fibre sintetiche in proporzione percentuale in peso variabile: la lunghezza delle fibre di cellulosa ? compresa tra 0,2 mm e 5,0 mm; il contenuto delle fibre di cotone e delle fibre sintetiche nella miscela di fibre ? in proporzioni variabili tra 1% e 50% in peso. The fiber blend preferably includes cellulose fibers, cotton fibers and synthetic fibers in variable weight percentage proportions: the length of the cellulose fibers? between 0.2 mm and 5.0 mm; the content of cotton fibers and synthetic fibers in the fiber blend? in proportions varying between 1% and 50% by weight.
Preferibilmente, la sostanza polimerica inclusa nel supporto base comprende una o pi? resine a base di colofonia e/o di alchil chetene dimero e/o di acido acetil succinico e/o di epocloridrina e/o di carbossimetilcellulosa. Preferably, the polymeric substance included in the base support comprises one or more resins based on rosin and/or alkyl ketene dimer and/or acetyl succinic acid and/or epochlorohydrin and/or carboxymethyl cellulose.
Preferibilmente la carica inorganica ? una carica minerale comprendente una o pi? sostanze scelte nel gruppo costituito da carbonati, caolini, talco, loro miscele. Preferably the inorganic filler? a mineral filler comprising one or more? substances chosen from the group consisting of carbonates, kaolins, talc and their mixtures.
La formulazione della patina vantaggiosamente comprende come collante detto silicone ed aggiuntivamente almeno uno tra un amido, un poliolo, un polimero acrilico, un polimero poliuretanico, una cera sintetica o naturale che coadiuvano il silicone per conferire alla patina propriet? barriera funzionale all?acqua, grassi, oli e gas, resistenza meccanica e capacit? di piega senza lacerazioni. Pi? in dettaglio si ? trovata conveniente la seguente formulazione per il materiale cartaceo (percentuali espresse in peso del materiale cartaceo). The formulation of the patina advantageously includes silicone as a glue and additionally at least one of a starch, a polyol, an acrylic polymer, a polyurethane polymer, a synthetic or natural wax which assist the silicone to give the patina properties functional barrier to water, fats, oils and gases, mechanical resistance and capacity fold without tears. More? in detail yes? found the following formulation convenient for paper material (percentages expressed in weight of paper material).
Supporto di base: Basic support:
-fibre di cellulosa tra il 50% e 90% in peso -cellulose fibers between 50% and 90% by weight
- fibre naturali e/o sintetiche tra il 1% ed il 10% in peso - natural and/or synthetic fibers between 1% and 10% by weight
- sostanza polimerica tra il 1% ed il 10% in peso - polymeric substance between 1% and 10% by weight
- carica inorganica tra 2% ed il 40% in peso - inorganic filler between 2% and 40% by weight
Patina superficiale: Surface patina:
- collante: tra il 1% ed il 12% in peso - glue: between 1% and 12% by weight
Pi? in particolare si ? trovata conveniente la seguente formulazione specifica per il materiale cartaceo (percentuali espresse in peso del materiale cartaceo). More? in particular yes? found the following specific formulation convenient for paper material (percentages expressed in weight of paper material).
Supporto di base: Basic support:
-fibre di cellulosa 80% in peso -cellulose fibers 80% by weight
- fibre naturali e/o sintetiche: fibre di cotone 1% in peso e fibre sintetiche 1% in peso - natural and/or synthetic fibres: cotton fibers 1% by weight and synthetic fibers 1% by weight
- sostanza polimerica: resina a base di epocloridrina 2% in peso e resina a base di carbossimetilcellulosa 1% in peso - polymeric substance: epochlorhydrin-based resin 2% by weight and carboxymethylcellulose-based resin 1% by weight
- carica inorganica: carbonato di calcio 4% in peso - inorganic filler: calcium carbonate 4% by weight
Patina superficiale: Surface patina:
- collante: silicone 1% in peso e lattice stirolo acrilico 10% in peso La grammatura del materiale cartaceo secondo la presente invenzione ? compresa tra circa 50 gr/mq e circa 900 g/mq. - glue: silicone 1% by weight and styrene acrylic latex 10% by weight. The weight of the paper material according to the present invention is ? between approximately 50 g/m2 and approximately 900 g/m2.
Il materiale cartaceo sopra descritto viene realizzato in accordo con un ulteriore aspetto della presente invenzione, con il metodo che comprendere le fasi di: -predisporre un impasto acquoso contenente le fibre di cellulosa e altre fibre naturali e/o sintetiche, la sostanza polimerica e la carica inorganica; The paper material described above is made in accordance with a further aspect of the present invention, with the method comprising the steps of: - preparing an aqueous mixture containing the cellulose fibers and other natural and/or synthetic fibres, the polymeric substance and the inorganic filler;
-rimuovere acqua dall?impasto per formare il supporto base del materiale cartaceo; -remove water from the mixture to form the base support of the paper material;
-applicare al supporto base la patina mediante trattamento di almeno una superficie del supporto base con almeno una soluzione acquosa comprendente come collante almeno detto silicone. -apply the patina to the base support by treating at least one surface of the base support with at least one aqueous solution including at least said silicone as glue.
Pi? in dettaglio, il materiale cartaceo viene realizzato con tecnica di formazione della carta sostanzialmente nota, per esempio su una macchina continua per la fabbricazione della carta. More? in detail, the paper material is made with a substantially known paper forming technique, for example on a continuous paper making machine.
Viene predisposto l?impasto acquoso e successivamente, si rimuove acqua dall?impasto per formare il supporto base del materiale cartaceo. The aqueous mixture is prepared and subsequently, water is removed from the mixture to form the basic support of the paper material.
Segue la fase di trattamento superficiale di una o entrambe le facce del supporto base con una soluzione acquosa comprendente il silicone. This is followed by the surface treatment phase of one or both faces of the base support with an aqueous solution including silicone.
Il metodo pu? comprendere successivamente, dopo il trattamento superficiale del supporto di base con la soluzione acquosa, una fase di lisciatura del materiale cartaceo che viene lisciato fino a valori di liscio Bendsten ISO 2494 inferiore a circa 400 ml/min. The method can subsequently include, after the surface treatment of the base support with the aqueous solution, a smoothing phase of the paper material which is smoothed up to Bendsten ISO 2494 smoothness values of less than approximately 400 ml/min.
Il metodo comprende vantaggiosamente una fase di trattamento meccanico del supporto di base per ottenere una porosit? da 50 sec a 20000 sec secondo il metodo Gurley. The method advantageously includes a mechanical treatment phase of the base support to obtain a porosity from 50 sec to 20000 sec according to the Gurley method.
Infine, il metodo pu? comprendere una ulteriore fase di trattamento meccanico superficiale del materiale cartaceo, in particolare una fase di goffratura. Finally, the method can? include a further mechanical surface treatment phase of the paper material, in particular an embossing phase.
Vantaggiosamente, un materiale cartaceo realizzato in accordo alla presente invenzione pu? essere utilizzato in sostituzione di materiali plastici rigidi come strato di supporto accoppiato e/o laminato a contenitori in forma di sacchetto contenenti liquidi o gel. Advantageously, a paper material made according to the present invention can be used to replace rigid plastic materials as a support layer coupled and/or laminated to bag-shaped containers containing liquids or gels.
Al materiale cartaceo e al relativo metodo di fabbricazione secondo la presente invenzione e qui descritti ed illustrati possono essere apportate modifiche e varianti che non escono dall?ambito del concetto inventivo come definito nelle annesse rivendicazioni. Modifications and variations can be made to the paper material and the related manufacturing method according to the present invention and described and illustrated herein which do not depart from the scope of the inventive concept as defined in the attached claims.
Claims (10)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102021000032753A IT202100032753A1 (en) | 2021-12-28 | 2021-12-28 | TOTALLY CLOSURE PAPER MATERIAL PARTICULARLY FOR USE IN THE FOOD INDUSTRY |
| EP22797288.2A EP4457398A1 (en) | 2021-12-28 | 2022-09-23 | Paper material with total closure particularly for use in the food industry |
| US18/724,968 US20250067001A1 (en) | 2021-12-28 | 2022-09-23 | Paper material with total closure particularly for use in the food industry |
| CN202280085999.7A CN118510958A (en) | 2021-12-28 | 2022-09-23 | Fully sealed paper, in particular for use in the food industry |
| PCT/EP2022/076475 WO2023126083A1 (en) | 2021-12-28 | 2022-09-23 | Paper material with total closure particularly for use in the food industry |
| CA3241785A CA3241785A1 (en) | 2021-12-28 | 2022-09-23 | Paper material with total closure particularly for use in the food industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102021000032753A IT202100032753A1 (en) | 2021-12-28 | 2021-12-28 | TOTALLY CLOSURE PAPER MATERIAL PARTICULARLY FOR USE IN THE FOOD INDUSTRY |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT202100032753A1 true IT202100032753A1 (en) | 2023-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT102021000032753A IT202100032753A1 (en) | 2021-12-28 | 2021-12-28 | TOTALLY CLOSURE PAPER MATERIAL PARTICULARLY FOR USE IN THE FOOD INDUSTRY |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250067001A1 (en) |
| EP (1) | EP4457398A1 (en) |
| CN (1) | CN118510958A (en) |
| CA (1) | CA3241785A1 (en) |
| IT (1) | IT202100032753A1 (en) |
| WO (1) | WO2023126083A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0261820A1 (en) * | 1986-09-09 | 1988-03-30 | E.I. Du Pont De Nemours And Company | Filler compositions and their use in manufacturing fibrous sheet materials |
| WO1999057371A1 (en) * | 1998-05-04 | 1999-11-11 | Visy R & D Pty Ltd. | Liner for plasterboard |
| WO2005042843A1 (en) * | 2003-10-24 | 2005-05-12 | National Gypsum Properties, Llc | Process for making abrasion resistant paper and paper and paper products made by the process |
| EP2520709A1 (en) * | 2011-05-06 | 2012-11-07 | GRUPPO CORDENONS S.p.A. | Sand-effect paper material and corresponding manufacturing method |
| WO2017134071A1 (en) * | 2016-02-01 | 2017-08-10 | Gruppo Cordenons S.P.A. | Pearlescent metallic effect paper material with high lightfastness and related manufacturing method |
| US20200063358A1 (en) * | 2018-08-23 | 2020-02-27 | Eastman Chemical Company | Composition of matter in a post-refiner blend zone |
| US20200354892A1 (en) * | 2019-05-06 | 2020-11-12 | Gpcp Ip Holdings Llc | Paper sheet mulches and methods of making the same |
-
2021
- 2021-12-28 IT IT102021000032753A patent/IT202100032753A1/en unknown
-
2022
- 2022-09-23 WO PCT/EP2022/076475 patent/WO2023126083A1/en active Application Filing
- 2022-09-23 EP EP22797288.2A patent/EP4457398A1/en active Pending
- 2022-09-23 US US18/724,968 patent/US20250067001A1/en active Pending
- 2022-09-23 CA CA3241785A patent/CA3241785A1/en active Pending
- 2022-09-23 CN CN202280085999.7A patent/CN118510958A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0261820A1 (en) * | 1986-09-09 | 1988-03-30 | E.I. Du Pont De Nemours And Company | Filler compositions and their use in manufacturing fibrous sheet materials |
| WO1999057371A1 (en) * | 1998-05-04 | 1999-11-11 | Visy R & D Pty Ltd. | Liner for plasterboard |
| WO2005042843A1 (en) * | 2003-10-24 | 2005-05-12 | National Gypsum Properties, Llc | Process for making abrasion resistant paper and paper and paper products made by the process |
| EP2520709A1 (en) * | 2011-05-06 | 2012-11-07 | GRUPPO CORDENONS S.p.A. | Sand-effect paper material and corresponding manufacturing method |
| WO2017134071A1 (en) * | 2016-02-01 | 2017-08-10 | Gruppo Cordenons S.P.A. | Pearlescent metallic effect paper material with high lightfastness and related manufacturing method |
| US20200063358A1 (en) * | 2018-08-23 | 2020-02-27 | Eastman Chemical Company | Composition of matter in a post-refiner blend zone |
| US20200354892A1 (en) * | 2019-05-06 | 2020-11-12 | Gpcp Ip Holdings Llc | Paper sheet mulches and methods of making the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CA3241785A1 (en) | 2023-07-06 |
| CN118510958A (en) | 2024-08-16 |
| US20250067001A1 (en) | 2025-02-27 |
| WO2023126083A1 (en) | 2023-07-06 |
| EP4457398A1 (en) | 2024-11-06 |
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