EP3464107A1 - Procede de fixation - Google Patents
Procede de fixationInfo
- Publication number
- EP3464107A1 EP3464107A1 EP17732518.0A EP17732518A EP3464107A1 EP 3464107 A1 EP3464107 A1 EP 3464107A1 EP 17732518 A EP17732518 A EP 17732518A EP 3464107 A1 EP3464107 A1 EP 3464107A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nanocellulose
- layer
- cellulose
- deposited
- nanocrystals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/42—Applications of coated or impregnated materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F5/00—Attaching together sheets, strips or webs; Reinforcing edges
- B31F5/06—Attaching together sheets, strips or webs; Reinforcing edges by adhesive tape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
- B32B23/02—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose in the form of fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/08—Corrugated paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J101/00—Adhesives based on cellulose, modified cellulose, or cellulose derivatives
- C09J101/02—Cellulose; Modified cellulose
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/18—Highly hydrated, swollen or fibrillatable fibres
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/32—Multi-ply with materials applied between the sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/26—All layers being made of paper or paperboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
- B32B2262/067—Wood fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
Definitions
- the present application relates to a method of fixing surfaces to one another, in particular surfaces of objects of paper or cardboard, and the system obtained by such a method.
- Paper and paperboard are products that can be used as packaging with a recycling rate higher than 70% in Europe.
- packaging is usually assembled and heat-sealed or glued with polymers, such as polyethylene-based films or coated compositions, which can make paper and paperboard recycling processes more complex and compromise end-of-life as a biodegradable or compostable package.
- An object of an embodiment is to overcome all or part of the disadvantages of the methods for fixing surfaces to each other and the systems thus obtained described above.
- Another object of an embodiment is that the products used for fixing the surfaces are of natural origin and biodegradable.
- Another object of an embodiment is that the products used for fixing the surfaces are easily recyclable.
- Another object of an embodiment is that the fixing method can be implemented on an industrial scale.
- an embodiment provides a system comprising a first surface and a second surface, a first area where the first surface is attached to the second surface and a second area around the first area where the first surface is not attached to the second surface, the first zone comprising a first nanocellulose layer attached to the first surface, the first nanocellulose layer being in contact with the second surface and fixed to the second surface, the second surface containing cellulose, or being in contact with a second nanocellulose layer and attached to the second nanocellulose layer, the second nanocellulose layer being attached to the second surface.
- the nanocellulose comprises at least 80% by weight of cellulose nanocrystals, optionally functionalized on the surface, fibrillated cellulose, optionally functionalized on the surface, or a mixture of cellulose nanocrystals and fibrillated cellulose, optionally functionalized. surface.
- the nanocellulose comprises at least 80% by weight of cellulose nanocrystals, optionally functionalized at the surface.
- the first nanocellulose layer has a thickness of between 0.5 ⁇ m and 20 ⁇ m.
- the first surface belongs to a first object and the second surface belongs to a second object, the first object and / or the second object containing cellulose.
- At least one of the first object and the second object is a paper sheet or a cardboard plate.
- first layer of nanocellulose attaching the first layer of nanocellulose to the second surface, the second surface containing cellulose, or the second layer of nanocellulose, resulting in a first area comprising the first layer of nanocellulose where the first surface is attached to the second surface and a second area around the first area where the first surface is not attached to the second surface.
- the nanocellulose comprises at least 80% by weight of cellulose nanocrystals, fibrillated cellulose or a mixture of cellulose nanocrystals and fibrillated cellulose.
- the nanocellulose comprises at least 80% by weight of cellulose nanocrystals.
- the attachment of the first nanocellulose layer to the second surface or the second nanocellulose layer comprises an ultrasonic welding step.
- the first nanocellulose layer has a thickness of between 0.5 ⁇ m and 10 ⁇ m.
- the first surface belongs to a first object and the second surface belongs to a second object, the first object and / or the second object containing cellulose.
- At least one of the first object and the second object is a paper sheet or a cardboard plate.
- Figure 1 shows, partially and schematically, an embodiment of a system comprising two objects attached to each other;
- Figure 2 shows, in a partial and schematic manner, another embodiment of a system comprising two objects fixed to each other;
- Fig. 3 is a block diagram of an embodiment of a method of manufacturing the system shown in Fig. 1;
- Figure 4 illustrates a step of the method illustrated in Figure 3.
- FIG. 5 illustrates another step of the method illustrated in FIG.
- Cellulose is a polymer that is found in large quantities in biomass, and especially in the walls of plant cells. It consists of linearly linked glucose chains ( ⁇ -1,4 linkage) to form macromolecules that naturally combine into fibrils. The fibrils are themselves associated with fibers and form the walls of the plant fibers.
- fibrous cellulose It is known to form fibrous cellulose from natural cellulose.
- the fibrillated cellulose is known by the acronym NFC, or nanofiber cellulose, English NanoFibrillated Cellulose or under the acronym MFC, English MicroFibrillated Cellulose.
- the fibers contained in the fibrillated cellulose typically have a length of between 0.5 and 2 ⁇ m and a diameter between 5 and 70 nm.
- Fibrillated cellulose consists of crystalline regions and amorphous regions. It will be noted that, in the remainder of the description, the term "fibrillated cellulose” is used interchangeably for nanofibrillated (NFC) or microfibrillated (MFC) cellulose.
- the cellulose can also be converted into cellulose crystals, better known by the acronym CNC (acronym for crystalline nanocellulose) or NCC (or “whiskers”), of the English NanoCristalline Cellulose.
- CNC cronym for crystalline nanocellulose
- NCC or “whiskers”
- a cellulose nanocrystal (NCC) is a cellulose crystal of which at least one of the dimensions is less than 100 nm.
- the cellulose nanocrystals typically have a length of between 100 nm to 500 nm, for example equal to about 300 nm, and a diameter of most often between 5 nm and 20 nm.
- nanocellulose is a material comprising at least 80% by weight of cellulose nanocrystals (NCC) optionally functionalized on the surface, fibrillated cellulose (NFC, MFC) optionally functionalized on the surface or a mixture of nanocrystals. cellulose and fibrillated cellulose optionally functionalized on the surface.
- the nanocellulose comprises at least less than 90% by weight of cellulose nanocrystals.
- nanocrystals or "surface-functionalized" fibrillated cellulose it is meant that chemical groups are grafted onto the surface of the nanocrystals or of the fibrillated cellulose.
- the inventors have demonstrated that the attachment of two surfaces can be carried out using nanocellulose.
- a first layer of nanocellulose deposited on a first surface can be fixed to a second layer of nanocellulose deposited on a second surface, or can be fixed directly to the second surface in the case where the second surface belongs to an object containing cellulose.
- FIG. 1 represents an embodiment of a system 10 comprising a first object 12 comprising a first surface 13 and a second object 14 comprising a second surface 15.
- the first object 12 and the second object 14 are flattened objects, that is to say they correspond to objects for which the smallest dimension is smaller, by at least a factor of 10, to the other dimensions of the object.
- the first object 12 and / or the second object 14 contain cellulose, preferably at least 50% by weight of cellulose, more preferably at least 80% by weight of cellulose.
- the first object 12 and / or the second object 14 may not contain cellulose and be in any solid material, for example plastic.
- a surface pretreatment corona or plasma type
- an interface layer not shown, can be provided between each layer of nanocellulose 16, 18 and the object 12, 14 associated to facilitate adhesion of the nanocellulose layer 16, 18 on the object 12, 14 associated.
- the first object 12 is a paper sheet or a cardboard plate and the second object 14 is a paper sheet or a cardboard plate.
- the thickness of the first object 12 and / or the second object 14 is between 10 and 350 ym.
- the first object 12 and the second object 14 are part of the same object, for example an envelope, a cardboard box, a sealed package, etc.
- the system includes a first layer of nanocellulose
- the first surface 13 and the second surface 15 have complementary shapes at least at the nanocellulose layers 16, 18.
- the first surface 13 and the second surface 15 are substantially planar at least at the level of the nanocellulose layers 16, 18.
- the first layer of nanocellulose 16 is in contact with the second layer of nanocellulose 18 and attached to the second layer of nanocellulose 18.
- the first and second layers of nanocellulose 16, 18 can interpenetrate at least in part.
- the maximum thickness of each nanocellulose layer 16, 18, measured in a direction perpendicular to the first surface 13 or the second surface 15, is between 0.5 ⁇ m and 20 ⁇ m and preferably between 0.5 ⁇ m and 10 ⁇ m.
- the first nanocellulose layer 16 and the second nanocellulose layer 18 form an attachment zone 20 between the first object 12 and the second object 14.
- the dimensions of each nanocellulose layer 16, 18 depend on the desired dimensions of the attachment zone 20 between the first and second surfaces 13, 15.
- the minimum dimension of the fastening zone 20 in a plane parallel to the first and second surfaces 13, 15 at the attachment zone 20 is greater than 500 ⁇ m.
- the maximum dimension of the fastening zone 20 in a plane parallel to the first and second surfaces 13, 15 is less than 5 cm.
- the first object 12 is not mechanically connected to the second object 14 and a gap 22, by example filled with air, may be present between the first object 12 and the second object 14.
- FIG. 2 represents another embodiment of a system 30 comprising all the elements of the system 10 except that the second layer of nanocellulose 18 is not present.
- the attachment zone 20 then corresponds to the interface between the first nanocellulose layer 16 and the second surface 15.
- the second object 14 at least contains cellulose, preferably at least 50% by weight of cellulose, more preferably at least 80% by weight of cellulose.
- FIG. 3 is a block diagram of an embodiment of a method of manufacturing the system 10 shown in FIG. 1 comprising successive steps 40, 42 and 44.
- the method comprises forming the nanocellulose.
- Cellulose crystals can be obtained by chemical treatments, for example by hydrolysis of cellulose with a sulfuric acid treatment.
- the fibrillated cellulose (NFC or MFC) can be obtained by a mechanical treatment step performed on a mixture of cellulose fibers, for example wood, suspended (pulped). This step is a mechanical disintegration of the cellulose fibers, for example by friction of the fibers, generally carried out in a machine for homogenization or friction.
- Additional treatments can be performed in step 40 or between steps 40 and 42 to obtain nanocelluloses functionalised on the surface from the nanocellulose.
- the treatments are, for example, enzymatic or chemical treatments, corresponding, for example, to esterification, etherification, silanization, surface polymerization or urethane formation reactions.
- the hydroxyl (-OH) groups of the cellulose are reacted partially or totally with different chemical reagents to give cellulose esters or cellulose ethers.
- the reagents can be organic or anhydride acids, for example a fatty-chain carboxylic acid.
- the reactants may be haloalkanes, for example fatty-chain epoxides.
- the composition comprising the nanocellulose may be in the form of a fluid or viscous suspension, for example in the form of a gel.
- the composition comprising the nanocellulose comprises between 0.1% and 20% by weight of nanocellulose, preferably between 2% and 10%.
- the solvent is generally water and may be water-alcohol mixtures or any other solvent in which the suspension of nanocellulose, optionally functionalized, is stable, that is to say that it is easily dispersed and allows removal. homogeneous.
- the first nanocellulose layer 16 is formed on the first object 12 and the second nanocellulose layer 18 is formed on the second object 14.
- the formation of the nanocellulose layer 16 can be carried out by depositing the composition containing the nanocellulose on the first object 12 by a so-called additive process, for example by any surface coating technique, called coating for the papers, such as for example the coating bar or blade or even the coating curtain, but also by direct printing of the composition comprising the nanocellulose at the desired locations, for example by inkjet printing, heliography, screen printing, flexography, spray coating (English spray coating) or drop-casting.
- a drying step can then be provided to allow the solvent to evaporate from the deposited composition.
- the composition containing the nanocellulose may be deposited with a quantity ranging from 0.5 g / m 2 to 10 g / m 2 and a thickness of between 0.5 ⁇ m and 10 ⁇ m.
- the nanocellulose layer 18 may be formed in the same way as the nanocellulose layer 16.
- FIG. 4 represents an exemplary structure obtained after step 42 in which the nanocellulose layer 16 has been formed on the object 12.
- Step 44 corresponds to the attachment of the nanocellulose layer 16 deposited on the object 12 to the nanocellulose layer 18 deposited on the object 14 in the case of the system 10 or directly to the surface 15 of the object 14 in the case of the system 30.
- Step 44 may comprise contacting the nanocellulose layer 16 against the nanocellulose layer 18 and the at least partial local heating of the nanocellulose layers 16 and 18 in contact in the case of the system 10 and include contacting. of the nanocellulose layer 16 against the surface 15 and the at least partial local heating of the nanocellulose layer 16 in the case of the system 30.
- the heating can be achieved by an external heat source and / or by mechanical friction of the layers of nanocellulose 16 and 18 against each other in the case of the system 10 and the nanocellulose layer 16 and the object 14 in the case of the system 30.
- the step 44 may comprise the setting in local compression of the objects 12 and 14 in the fixing zone, for example at a pressure greater than 0.25 MPa, preferably greater than 0.28 MPa, in particular between 0.5 MPa and 20 MPa.
- step 44 comprises a step of ultrasonic welding of the nanocellulose layers 16,
- FIG. 5 partially and schematically represents an example of an ultrasonic welding device 50.
- the device 50 comprises:
- an electromagnetic transducer or converter 54 which converts the control signal into a mechanical movement of oscillations
- a device 56 for holding the object 12 on which the parts to be welded have been deposited that is to say, in the case of the system 10 shown in FIG. 1, the object 12 on which the nanocellulose 16 and the object 14 on which was deposited the nanocellulose layer 18, the nanocellulose layers 16 and 18 being in contact with each other and, in the case of the system 30 shown in FIG. object 12 on which was deposited the nanocellulose layer 16 and the object 14, the nanocellulose layer 16 being in contact with the object 14; and a sonotrode 58 for transmitting the oscillation movements of the converter 54 to the parts to be welded.
- the frequencies typically used are between 20 kHz and 70 kHz and the amplitudes of the vibrations vary between 10 ⁇ m and 120 ⁇ m, depending on the type of material and the shape of the parts to be assembled.
- the duration of the welding operation may be greater than 0.8 s, preferably greater than 0.9 s.
- the inventors carried out peel tests in the case of the system 10 and the system 20.
- the nanocellulose layers 16 and 18 comprised at least 90% by weight of cellulose nanocrystals and corresponded to ribbons having a width of 4 mm (+ / - 1 mm) and a length of 28 mm (+/- 1 mm).
- the peel angle was 180 °.
- the maximum peel load corresponds to the force required to separate the two objects 12 and 14 divided by the width of the fastening zone 20.
- the inventors obtained peel forces greater than 0.8 Newton for widths of 25 mm, while in the absence of nanocellulose layers, the adhesion between the surfaces was zero. In in some cases, when the peel load between two paper surfaces was not zero, the maximum load could reach a value twice as high, for example 10 Newton for 25 mm instead of 5 Newton for 25 mm.
- the cardboard used was a 300 g / m 2 multi-ply wooden box or cartonboard FBB manufactured by Stora Enso.
- this cardboard was coated on its fibrous face with nanocelluloses.
- Two types of nanocellulose have been used: nanofibrillated cellulose (NFC) or cellulose nanocrystals (NCC) suspended in water at 2% and 12% by mass, respectively.
- the coating was carried out using the Endupap type coating machine, which is an automatic machine for coating by means of Meyer bars.
- the deposited amount of nanocellulose in one or more passes may vary from 0.5 g / m 2 to 5 g / m 2.
- the carton is then dried by contact at 100 ° C. for 10 minutes.
- the ultrasonic welding is carried out using an ultrasound device marketed under the name Omega III DG - MCX by Mécasonic.
- the ultrasound frequency was 20 kHz with an amplitude of ultrasonic waves of 90 ⁇ m.
- first, second and third pairs of FBB cartons were used.
- nanocelluloses were deposited on each carton of the third pair.
- the cartons of the third pair were applied against one another on the nanocellulose layer side and an ultrasonic welding operation was performed. An adhesion to each other of the cartons of the third pair was observed.
- the first example shows that no bonding between two cartons is observed in the absence of nanocelluloses while bonding is observed when at least one nanocellulose layer is present on one of the cartons.
- Table I groups the results of the tests. The non-empty boxes in the table indicate the tests performed. When a weld could not be obtained or quantified during the peel test, the term "ND" was added to the table. The values listed (expressed in N / m) are those obtained during the 180 ° peel tests.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1654975A FR3052101B1 (fr) | 2016-06-01 | 2016-06-01 | Procede de fixation et systeme obtenu par un tel procede |
| PCT/FR2017/051379 WO2017207941A1 (fr) | 2016-06-01 | 2017-06-01 | Procede de fixation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3464107A1 true EP3464107A1 (fr) | 2019-04-10 |
Family
ID=56787565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17732518.0A Withdrawn EP3464107A1 (fr) | 2016-06-01 | 2017-06-01 | Procede de fixation |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20190202189A1 (fr) |
| EP (1) | EP3464107A1 (fr) |
| JP (1) | JP2019518671A (fr) |
| CN (1) | CN109789955A (fr) |
| CA (1) | CA3026028A1 (fr) |
| FR (1) | FR3052101B1 (fr) |
| WO (1) | WO2017207941A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| AU2019285372B2 (en) * | 2018-06-11 | 2025-02-27 | Dugalunji Aboriginal Corporation | Materials containing cellulose nanofibers |
| SE543251C2 (en) * | 2018-06-13 | 2020-11-03 | Stora Enso Oyj | Waterborne adhesive comprising crosslinkable microfibrillated cellulose |
| CN115366427A (zh) * | 2022-07-13 | 2022-11-22 | 沈阳航空航天大学 | 等离子体处理提高树脂基复合材料超声焊接头强度的方法 |
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| EP2496766B2 (fr) * | 2009-11-06 | 2024-05-15 | Stora Enso Oyj | Procédé de fabrication d'un produit en papier ou carton et papier ou carton fabriqué selon le procédé |
| SE534932C2 (sv) * | 2009-12-21 | 2012-02-21 | Stora Enso Oyj | Ett pappers eller kartongsubstrat, en process för tillverkning av substratet och en förpackning bildad av substratet |
| SE536780C2 (sv) * | 2011-10-26 | 2014-08-05 | Stora Enso Oyj | Förfarande för framställning av en dispersion som innefattarnanopartiklar samt en dispersion framställd enligt förfarandet |
| CN107672236B (zh) * | 2012-06-29 | 2019-10-11 | 魏克控股公司 | 用于在高压范围中电绝缘的绝缘元件 |
| US20140186576A1 (en) * | 2012-12-28 | 2014-07-03 | E I Du Pont De Nemours And Company | Insulating material containing nanocellulose |
| FI127682B (en) * | 2013-01-04 | 2018-12-14 | Stora Enso Oyj | Process for manufacturing microfibrillated cellulose |
| US20150072581A1 (en) * | 2013-09-11 | 2015-03-12 | Empire Technology Development Llc | Nanocellulose Composites and Methods for their Preparation and Use |
| US10194723B2 (en) * | 2013-11-12 | 2019-02-05 | Cynthia Lisa Skepton | Compostable composite multipanel smartphone, tablet and mobile electronic device cover kits for consumer print personalization and structural customization |
| US9822285B2 (en) * | 2015-01-28 | 2017-11-21 | Gpcp Ip Holdings Llc | Glue-bonded multi-ply absorbent sheet |
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2016
- 2016-06-01 FR FR1654975A patent/FR3052101B1/fr active Active
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2017
- 2017-06-01 EP EP17732518.0A patent/EP3464107A1/fr not_active Withdrawn
- 2017-06-01 WO PCT/FR2017/051379 patent/WO2017207941A1/fr not_active Ceased
- 2017-06-01 CN CN201780041888.5A patent/CN109789955A/zh active Pending
- 2017-06-01 JP JP2018563093A patent/JP2019518671A/ja active Pending
- 2017-06-01 US US16/305,929 patent/US20190202189A1/en not_active Abandoned
- 2017-06-01 CA CA3026028A patent/CA3026028A1/fr not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017207941A1 (fr) | 2017-12-07 |
| FR3052101A1 (fr) | 2017-12-08 |
| CA3026028A1 (fr) | 2017-12-07 |
| JP2019518671A (ja) | 2019-07-04 |
| CN109789955A (zh) | 2019-05-21 |
| FR3052101B1 (fr) | 2019-05-10 |
| US20190202189A1 (en) | 2019-07-04 |
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