EP3480352B1 - Emballage - Google Patents

Emballage Download PDF

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Publication number
EP3480352B1
EP3480352B1 EP18206141.6A EP18206141A EP3480352B1 EP 3480352 B1 EP3480352 B1 EP 3480352B1 EP 18206141 A EP18206141 A EP 18206141A EP 3480352 B1 EP3480352 B1 EP 3480352B1
Authority
EP
European Patent Office
Prior art keywords
packaging
component
spun
filaments
bonded nonwoven
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.)
Active
Application number
EP18206141.6A
Other languages
German (de)
English (en)
Other versions
EP3480352A1 (fr
Inventor
Claudio Cinquemani
Alexander Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to EP18206141.6A priority Critical patent/EP3480352B1/fr
Priority to DK18206141.6T priority patent/DK3480352T3/da
Publication of EP3480352A1 publication Critical patent/EP3480352A1/fr
Application granted granted Critical
Publication of EP3480352B1 publication Critical patent/EP3480352B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • 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
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/34—Core-skin structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C23/00—Making patterns or designs on fabrics
    • D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/10—Packaging, e.g. bags

Definitions

  • the invention relates to packaging, in particular a packaging sack with at least one weldable spunbonded fabric or packaging spunbonded fabric, the spunbonded fabric having continuous filaments, which preferably consist of thermoplastic material.
  • spunbonded webs made from continuous filaments are used.
  • endless filaments differ because of their quasi endless length from staple fibers, which have much shorter lengths of, for example, 10 mm to 60 mm. It is within the scope of the invention that a spunbonded or packaging spunbonded nonwoven is produced by means of a spunbond process.
  • spunbonded nonwovens or packaging spunbonded nonwovens for packaging walls - in particular sack-shaped packaging - are known in practice in various embodiments.
  • the spunbonded nonwovens can be used separately as packaging walls or as part of a laminate for the packaging walls.
  • laminates of spunbonded nonwovens and plastic films are known for this purpose.
  • Packaging walls made of spunbonded fabrics or with spunbonded fabrics are also known, in particular, for sack-shaped packaging for bulk goods with fill weights of 25 to 500 kg. Spunbonded nonwovens are also used for cement bags.
  • a tube is first produced from the spunbonded fabric (so-called “tube”) and opposite side ends of the nonwoven web are connected to one another, in particular welded to one another. Then the tube is cut to the desired bag length, the resulting product becomes folded or folded and then a bottom sheet is placed as a bottom component and a top sheet as a lid component and then welded to the bag body.
  • the bag-shaped packaging known to date or produced in the manner explained above often leaves something to be desired in terms of strength.
  • the packaging sacks in particular cement sacks - from drop heights of, for example, 2 m - the packaging sacks tear open at least after several attempts to drop them. The tearing usually takes place in the area of the weld seams or sealing seams of the packaging bags.
  • the known packaging sacks - for example cement sacks - are in need of improvement.
  • the spunbonded nonwovens used for the production of the known packaging bags also leave something to be desired in terms of their processability. This applies in particular to the weldability or sealability of the spunbonded nonwovens when producing a packaging or a packaging sack.
  • the invention is based on the technical problem of packaging, in particular a packaging bag with a weldable Spunbond or packaging spunbond to indicate which spunbond is processable or weldable on the one hand in a relatively simple and inexpensive manner and on the other hand also meets all requirements in terms of strength or stability in the processed state.
  • the continuous filaments or at least one component of the continuous filaments of the weldable spunbond, in particular the weldable packaging spunbond have 4 to 25% by weight of the filler, preferably 5 to 20% by weight and very preferably 6 to 15% by weight .-% of the filler.
  • the individual proportions of the constituents of the continuous filaments - in particular the plastic component or the plastic components of the continuous filaments - add up to a total of 100% by weight with the proportion of the filler.
  • the filler is at least one organic filler, expediently at least one metal salt and preferably at least one alkaline earth metal salt.
  • a particularly recommended embodiment of the invention is characterized in that the filler is a calcium salt and very particularly preferred is the filler calcium carbonate. Calcium carbonate has proven particularly useful as a filler for the weldable spunbonded fabric to solve the technical problem. In principle, calcium sulfate can also be used as a filler.
  • monocomponent filaments are used as continuous filaments for a weldable spunbonded nonwoven.
  • the monocomponent filaments of the weldable spunbonded nonwoven preferably have at least 5% by weight of filler or calcium carbonate, preferably at least 7% by weight, advantageously 7 to 25% by weight, preferably 8 to 22% by weight and very preferably 10 up to 20% by weight of filler or calcium carbonate as filler.
  • the filler is distributed homogeneously or essentially homogeneously in the continuous filaments or, according to the recommended embodiment, is arranged at least on the surface of the continuous filaments or essentially on the surface of the continuous filaments.
  • a particularly proven embodiment of the invention is characterized in that the continuous filaments of the weldable spunbonded fabric are designed as multicomponent filaments, in particular as bicomponent filaments.
  • the filler is preferably contained in a plastic component arranged on the outer surface of the multicomponent filaments or bicomponent filaments. It is recommended that a first plastic component arranged on the surface of the multicomponent filaments or the bicomponent filaments has an identical or preferably a lower melting point than at least a second plastic component of the multicomponent filaments or bicomponent filaments and that the filler contain at least the same or lower melting plastic component is or is contained essentially or only in the first plastic component with the same or lower melting point.
  • the multicomponent filaments or the bicomponent filaments of the weldable spunbonded fabric have a core-sheath configuration.
  • the filler is expediently contained in the sheath component of these multicomponent filaments or bicomponent filaments.
  • the plastic component of the multicomponent filaments or bicomponent filaments of the weldable spunbonded fabric which has the same or lower melting point is the sheath component and the filler is then at least in contain this jacket component or contain substantially or only in the jacket component.
  • the weldable spunbond is designed as a spunbond made of bicomponent filaments, specifically bicomponent filaments with a core-sheath configuration.
  • the component with the same or lower melting point is located in the jacket and consists, for example, of a polypropylene copolymer or essentially of a polypropylene copolymer.
  • the filler component - preferably in the proportions specified above - is additionally contained in the jacket component.
  • the higher or equal melting component is arranged in the core of the bicomponent filaments and consists for example of polypropylene or essentially of polypropylene.
  • a polyethylene can be used as the lower-melting component or as the sheath component of the bicomponent filaments or multicomponent filaments, and a polypropylene can be used as the higher-melting component or as the core component.
  • At least one plastic component of the bicomponent filaments or the multicomponent filaments of the spunbonded nonwoven consists of a polyolefin or essentially of a polyolefin.
  • a proven embodiment is characterized in that both or all plastic components of the bicomponent filaments or the multicomponent filaments of the weldable spunbonded nonwoven made of polyolefins or consist essentially of polyolefins. In principle, however, the use of other thermoplastics or their blends for the components is also possible.
  • the filler is arranged in a plastic component of the bicomponent filaments or multicomponent filaments, which is located on the surface of the filaments.
  • a plastic component of the bicomponent filaments or multicomponent filaments which is located on the surface of the filaments.
  • This is preferably the lower melting plastic component in the filament and very preferably the lower melting component is the sheath component of a core-sheath configuration of the bicomponent filaments or multicomponent filaments.
  • the filler - in particular the calcium carbonate - in the one arranged on the surface of the filaments is preferably lower melting plastic component, preferably contained in the lower melting plastic component in the sheath of the bicomponent filaments or multicomponent filaments.
  • the filler or the calcium carbonate is expediently distributed homogeneously or essentially homogeneously in the plastic component or arranged on the outer surface or essentially on the outer surface of the plastic component.
  • the mass ratio of the first is preferably lower melting plastic component - in particular the sheath component - to the second, preferably higher melting component - in particular the core component - 35: 65 to 50: 50, preferably 40: 60 to 45: 55.
  • the proportion of the sheath component in relation to the core component is higher than in the case of multicomponent filaments or bicomponent filaments of spunbonded nonwovens or spunbonded areas which are not intended for welding.
  • a particularly preferred embodiment of the invention is characterized in that the weldable spunbond is a calendered spunbond. It is recommended that a surface of this spunbonded fabric be calendered smooth and a surface profiled calendered. However, both surfaces of the spunbonded fabric can also be smoothly calendered. It is within the scope of the invention that the ratio of the strength or tensile strength of the weldable spunbonded fabric in the machine direction (MD) to the strength or tensile strength of the spunbonded fabric transverse to the machine direction (CD) is either 1 or greater than 1, preferably greater than 1 , 1 and especially is preferably greater than 1.2.
  • Machine direction means in particular the conveying direction of the deposited spunbonded nonwoven on a shelf or on a shelf device.
  • a weldable spunbonded fabric is produced according to the following method: First, continuous filaments are spun using a spinnerette and then these filaments are cooled in a cooling device and then drawn using a stretching device and then on a depositing device for the spunbonded fabric stored.
  • the weldable spunbonded fabric or weldable packaging spunbonded fabric is produced as a spunbond nonwoven by a spunbond process.
  • the cooling device is divided into at least two cabin sections arranged one above the other or one behind the other in the filament flow direction, cooling air with different convective heat dissipation properties - in particular cooling air with different temperature - being introduced into the filament flow chamber from these cabin sections. It is recommended that the cooling device only have two such cabin sections arranged one above the other or one behind the other in the filament flow direction.
  • the cooling device is preferably connected via an intermediate channel - in particular via an intermediate channel converging in the filament flow direction - to a lower channel of the drawing device.
  • the endless filaments are thus passed through the cooling device, then through the intermediate channel and then through the pulling channel.
  • the filaments for the spunbonded nonwoven web or for the spunbonded nonwoven are deposited on a depositing device, which is preferably designed as a depositing screen belt or as an endlessly rotating depositing screen belt.
  • a very particularly recommended embodiment of the method or the device for producing a weldable spunbond is characterized in that the unit comprising the cooling device, the intermediate channel and the connecting channel connected to it is designed as a closed unit and that apart from the supply of the cooling air in the cooling device, no further air supply in this closed aggregate takes place. Furthermore, in the course of the production of the weldable spunbonded fabric, it is preferred that at least one diffuser is arranged between the pulling channel and the depositing device, through which the filaments are guided in the filament flow direction to the depositing device. At least two diffusers, preferably two diffusers, are expediently arranged one behind the other in the filament flow direction between the pulling channel and the storage device.
  • a recommended embodiment of the invention is characterized in that the filaments in the area of the spinnerette or between the spinnerette and the cooling device are passed through a monomer suction device.
  • the gases emerging in addition to the filaments are removed in the form of monomers, oligomers, decomposition products and the like from the filament formation space below the spinnerette or from the device.
  • the spunbonded fabric deposited from the continuous filaments is pre-consolidated or consolidated with at least one calender.
  • the calendering can be done inline or offline.
  • a calender it is recommended that a calender have an embossing area of 10 to 90%, preferably 15 to 35% and very preferably 18 to 30%.
  • only one of two calender rolls has an engraving and preferably the embossing surface specified above and the opposite or assigned calender roll is smooth or essentially smooth and without engraving.
  • the embossing depth of the calender engraving is preferably 0.1 to 0.8 mm, preferably 0.1 to 0.6 mm and very preferably 0.2 to 0.4 mm.
  • the number of engraving points on a calender roll or the calender roll with engraving is greater than 30 / cm 2 and preferably greater than 40 / cm 2 .
  • the number of engraving points of a calender roll or the calender roll with engraving is particularly preferably more than 45 / cm 2 .
  • the engraving points of a calender roll or the calender roll with engraving have a diamond shape in plan view.
  • the spunbonded fabric is calendered with a calender comprising two calender rolls with a smooth surface.
  • the calendering of a spunbonded nonwoven can also take place with a belt calender.
  • An embodiment variant is characterized in that the calendering is carried out at least in two or two stages.
  • the deposited spunbonded fabric is first calendered with a calender or with a standard calender which has an engraving, preferably the engraving explained above.
  • the spunbonded fabric is then calendered with a calender from two calender rolls with a smooth surface or calendered with a belt calender.
  • one surface can be plastic-coated and one surface can be made of steel or essentially of steel.
  • the above-described calendering of the spunbonded fabric has proven particularly useful with regard to solving the technical problem according to the invention.
  • Calendered or pre-consolidated / consolidated spunbonded webs in the manner described can be welded particularly advantageously or welded into packaging.
  • the spunbonded nonwovens produced can In the course of the production of packaging, it can be combined and coated easily and easily with other layers, in particular with plastic films and / or meltblown nonwovens or other spunbond nonwovens.
  • spunbonded nonwovens with optimized placement quality can be obtained and very homogeneous spunbonded nonwovens can be produced.
  • the spunbonded fabric deposit can be optimized to the extent that thin spots and thick spots in the spunbonded fabric are considerably reduced in comparison to other known methods.
  • the range between the lightest thin point or the lightest analyzed square and the heaviest thick spot or the heaviest analyzed square can be significantly reduced compared to other known manufacturing processes.
  • the span can be reduced from over 30 g / m 2 in other known processes to approximately 15 g / m 2 in the process used according to the invention.
  • the invention is based on the knowledge that the spunbond nonwovens produced as described above can be excellently processed into packaging - for example into packaging sacks - and in particular can be easily and easily sealed.
  • the invention is also based on the knowledge that the welding temperature for welding these spunbonded nonwovens or packaging spunbonded nonwovens according to the invention compared to those known according to others Process produced spunbonded can be significantly reduced. This advantageous lowering of the welding temperature results above all in combination with the filler according to the invention, in particular in the form of calcium carbonate.
  • the weldable spunbonded webs produced by the preferred method advantageously have fewer thin spots than other spunbonded webs and consequently hardly any thin spots can be damaged during welding.
  • the spunbond nonwovens produced are characterized by optimum processability, in particular weldability, and they have the optimal basic requirements for the production of packaging.
  • Spunbond nonwovens have particularly advantageous properties for the production of packaging, in which the ratio of the strength or tensile strength of the spunbonded fabric in the machine direction (MD) to the strength or tensile strength of the spunbonded fabric transverse to the machine direction (CD) is 1 or greater than 1, is preferably greater than 1.1, preferably greater than 1.2 and very preferably greater than 1.25.
  • MD machine direction
  • CD machine direction
  • the invention relates to a packaging, in particular a packaging sack - for example a cement sack - preferably for receiving pourable and / or free-flowing products such as cement and the like.
  • the packaging according to the invention has at least one spunbonded nonwoven or packaging spunbonded nonwoven, the spunbonding nonwoven forming the packaging wall and / or being part of the packaging wall and with sections of the spunbonding nonwoven or the spunbonding nonwoven in the Side wall area and / or in the bottom area and / or in the lid area of the packaging wall are welded together. It is within the scope of the invention that the packaging has at least one flat bottom component and / or at least one flat cover component which is welded to the remaining packaging wall or to the side wall of the packaging.
  • the flat lid component and / or the flat bottom component of the packaging consist / consist of at least one spunbonded nonwoven or each of a spunbonded nonwoven and preferably the same spunbonded nonwoven material as the rest of the packaging or how the side wall. If, for the side wall and for the flat cover component and / or the flat bottom component of the packaging wall, spunbonded webs made of multicomponent filaments or bicomponent filaments with a first or lower melting plastic component on the outer surface are used, a particularly preferred embodiment of the invention is characterized in that the spunbonded webs for the flat cover component and / or for the flat bottom component have a higher proportion of the first or lower melting plastic component than the spunbonded fabric or the spunbonded fabrics for the side wall of the packaging wall.
  • the proportion of the first or lower-melting plastic component in the spunbonded webs arranged on the outer surface of the multicomponent or bicomponent filaments is expediently 1.2 times to 3.5 times, preferably 1.5 times, for the flat cover component and / or for the flat bottom component up to 2.5 times as large as the proportion of the first or lower melting plastic component in the multicomponent or bicomponent filaments of the spunbonded fabric or the spunbonded fabrics for the side wall of the packaging.
  • the melting points of the two plastic components can also be the same or essentially the same.
  • a particularly preferred embodiment of the invention is characterized in that a spunbonded or spunbonded fabric is / are components of a packaging wall laminate and that the laminate preferably has at least one film, preferably a plastic film, in addition to the spunbonded fabric. Both the side wall and the flat cover component and / or the flat bottom component of the packaging wall can be designed as such a packaging wall laminate.
  • a very recommended embodiment of the invention is characterized in that the film or the plastic film of the laminate is arranged on the inside of the packaging wall.
  • the packaging according to the invention - in particular a packaging sack according to the invention - has a flat lid component which is part of the packaging wall and has at least one - expediently a weldable spunbonded fabric, which is specified in more detail above - and that the spunbonded fabric of the lid component with the side wall or is firmly connected to the spunbonded nonwoven material of the side wall of the packaging, in particular is welded.
  • the spunbonded nonwoven of the cover component has multicomponent filaments or bicomponent filaments or consists of multicomponent filaments or bicomponent filaments or essentially consists and that the mass ratio of the first or lower melting plastic component arranged on the outer surface of the filaments to the at least one a second or higher melting plastic component is 35:65 to 50:50 and preferably 40:60 to 45:55.
  • the melting points of the two plastic components can also be the same or essentially the same.
  • the packaging according to the invention - in particular the packaging sack according to the invention - preferably has at least one flat bottom component which is part of the packaging wall and which has at least one spunbonded or packaging spunbonded, in particular one specified above.
  • This spunbonded nonwoven or packaging spunbonded nonwoven forms the base component and / or is part of the base component.
  • the at least one spunbonded nonwoven of the base component is preferably firmly connected, preferably welded, to the side wall or to the spunbonded nonwoven material of the side wall of the packaging.
  • the spunbonded nonwoven of the bottom component has multicomponent filaments or bicomponent filaments or consists of multicomponent filaments or bicomponent filaments or consists essentially of it and that the mass ratio of the first or lower melting plastic component arranged on the outer surface of the filaments to the at least one second or higher melting plastic component is 35: 65 to 50: 50 and preferably 40: 60 to 45: 55.
  • the invention is based on the knowledge that the weldable spunbonded nonwoven or weldable packaging spunbonded nonwoven can be produced in a simple, inexpensive and problem-free manner and can be processed into packaging, in particular can be welded. It is of particular importance in the context of the invention that the required welding temperatures when welding the spunbonded nonwovens can be significantly reduced in comparison to the processing measures known from practice. Above all, you can work with a homogeneous welding temperature. The invention is further based on the finding that thin spots and thick spots in the spunbonded fabric for welding are largely problematic can be avoided. - Above all, the invention is based on the knowledge that the advantages set out above come about in particular through the combination of the filler according to the invention - in particular calcium carbonate - on the one hand with the implementation of the spunbond process according to the invention.
  • the invention is based, inter alia, on the knowledge that the filler according to the invention, in particular in the form of calcium carbonate, requires the spunbonded fabric to be better weldable. It is assumed that the filler or the calcium carbonate on the one hand absorbs less heat than the assigned plastic component and on the other hand has a higher thermal conductivity than the plastic. The result is that the filler or the calcium carbonate can meter the heat introduced into the plastic to be melted or softened, or can emit it, so that the associated plastic component can be melted in a targeted manner.
  • the invention is also based on the knowledge that a filler in the form of calcium carbonate improves the UV stability of the filaments or the spunbonded nonwovens.
  • the spunbonded nonwovens and the packaging according to the invention produced therefrom have excellent strength. This applies both to the packaging wall itself and to connecting seams - in particular weld seams - between areas of the packaging wall.
  • the packaging wall and the connecting seams between packaging wall areas are characterized by a high mechanical resistance.
  • In drop tests with filled packaging according to the invention - in particular packaging bags according to the invention filled with cement - the packaging wall or the weld seams between the packaging wall areas are seldom or not damaged at all.
  • a tearing open of the packaging wall is hardly observed.
  • a weldable spunbonded fabric or a packaging according to the invention produced therefrom has further advantages.
  • the packaging wall can be cleaned without major problems, in particular cleaned from the outside.
  • the packaging according to the invention is also distinguished by an appealing external visual appearance. Furthermore, excellent barrier effects can be set in a weldable spunbonded fabric produced according to the invention or in the packaging produced therefrom, so that in particular an additional outer coating of the packaging is not necessary.
  • FIG. 1 A packaging according to the invention is shown in the form of a packaging bag 1 for bulk goods - in particular for cement.
  • the packaging wall of this packaging bag 1 has weldable spunbonded nonwovens 2.
  • These spunbonded nonwovens 2 or packaging spunbonded nonwovens consist of continuous filaments 3 made of thermoplastic material.
  • the continuous filaments 3 contain at least 3% by weight of a filler 4 in the form of calcium carbonate to improve the weldability of the filaments or the spunbond nonwoven 2 and in particular to lower the welding temperature during thermal welding of the filaments or the spunbonded nonwoven 2.
  • the illustrated packaging bag 1 has a side wall 5 made of a spunbonded fabric, which was welded with its side ends 6 into a tube, as it were.
  • a flat bottom component 7 in the form of a spunbonded nonwoven 2 is arranged and welded to the side wall 5 of the packaging bag 1.
  • a flat lid component 8 in the form of a spunbonded nonwoven 2 is arranged in the lid area of the packaging bag 1 and with the Side wall 5 welded.
  • a plastic film can also be arranged on the inside of the packaging wall of the packaging bag 1, but in the exemplary embodiment according to FIG Fig. 1 was not shown.
  • the spunbonded fabrics used for the side wall 5, the base component 7 and the cover component 8 of the packaging bag 1 preferably consist, and in the exemplary embodiment, of bicomponent filaments with a core-sheath configuration (see also Fig. 3 ).
  • the lower-melting plastic component is the sheath component 9
  • the higher-melting plastic component is the core component 10.
  • the filler 4 in the form of calcium carbonate is preferred and in the exemplary embodiment is only contained in the sheath component 9 of the bicomponent filaments.
  • a particularly preferred device for producing the spunbonded nonwovens 2 is shown.
  • the endless filaments 3 are first spun here by means of a spinnerette 11 and then passed through a monomer suction device 12. Subsequently, the endless filaments 3 are cooled in the cooling device 13.
  • the cooling device 13 preferably has, in the exemplary embodiment, two cabin sections 14, 15 arranged one above the other or one behind the other in the filament flow direction, from which cooling air of different temperatures is introduced into the filament flow space.
  • the endless filaments 3 reach the intermediate channel 16 converging in the filament flow direction.
  • a connecting channel 17 of the drawing device 18 connects to this intermediate channel 16. This configuration serves to stretch the continuous filaments 3.
  • the continuous filaments 3 emerging from the pulling channel 17 are then preferred and, in the exemplary embodiment, are guided through two diffusers 19, 20 arranged one above the other or in the filament flow direction.
  • an ambient air inlet gap 25 is provided between the diffusers 19, 20, through which ambient air can penetrate.
  • the endless filaments 3 are then deposited on the depositing device for spunbonded web 2 designed as a depositing belt 21.
  • the spunbonded nonwoven 2 is conveyed away in the machine direction M by means of the deposit screen belt 21.
  • the spunbonded fabric 2 is calendered or pre-consolidated / consolidated by means of a calender 22.
  • a calender roll 23 is provided with an engraving (not shown in any more detail), and a calender roll 24 interacting with or associated with the calender 22 is preferred and, in the exemplary embodiment, is equipped with a smooth surface.
  • a spunbonded fabric 2 produced in the manner described can be used simply and without problems for a packaging wall (side wall 5 and / or bottom component 7 and / or lid component 8) of the packaging bag 1.
  • bicomponent filaments for a weldable spunbonded nonwoven 2 are shown.
  • the embodiment of the bicomponent filaments shown outweighs the proportion of the core component 10 in comparison to the sheath component 9.
  • the filler in the form of calcium carbonate is in the bicomponent filaments in accordance with Fig. 3 contained exclusively in the jacket component 9, which corresponds to the lower melting plastic component.
  • the bicomponent filaments according to Fig. 3a are particularly suitable for spunbonded nonwovens 2, which form the side wall 5 of a packaging bag 1.
  • the bicomponent filaments have according to Fig. 3b a much higher proportion of the jacket component 9 or the lower melting Plastic component.
  • the filler is also preferred here and in the exemplary embodiment is contained exclusively in the jacket component 9.
  • the bicomponent filaments according to Fig. 3b are particularly suitable for spunbonded nonwovens 2 or for spunbonded nonwoven areas that have to be welded.
  • the jacket component 9 with the lower melting plastic component provides sufficient welding material. The welding is preferably carried out with the proviso that the jacket component 9 is only or essentially melted or welded.
  • the bicomponent filaments are therefore suitable Fig. 3b especially for the base component 7 to be welded and / or for the cover component 8 to be welded of a packaging bag 1 according to the invention.
  • the mass ratio of the lower melting plastic component (jacket component 9) to the higher melting plastic component (core component 10) may be in the embodiment Fig. 3a 20:80. In contrast, in the embodiment according to Fig. 3b the mass ratio of the lower melting plastic component (jacket component 9) to the higher melting plastic component (core component 10) to 40:60.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Claims (6)

  1. Emballage, notamment sac d'emballage (1), destiné à recevoir de préférence des produits en vrac et/ou des produits à écoulement aisé, comme du ciment et similaires, pourvu d'au moins un filé-lié (2) ou filé-lié d'emballage, caractérisé en ce que le filé-lié (2) ou filé-lié d'emballage comporte des filaments continus (3) en matière thermoplastique,
    en ce que soit les filaments continus sont des filaments monocomposant et comporte au moins 3 % en poids, de préférence au moins 4 % en poids d'au moins un agent de charge (4), destiné à améliorer la soudabilité du filé-lié (2) (notamment à baisser la température de soudage lors du soudage thermique du filé-lié (2)),
    ou en ce que les filaments continus (3) sont conçus sous la forme de filaments multicomposants, notamment de filaments bicomposants et en ce qu'un composant en matière plastique, placé en surface des filaments multicomposants ou bicomposants comporte au moins 3 % en poids, de préférence au moins 4 % en poids d'au moins un agent de charge (4), destiné à améliorer la soudabilité du filé-lié (2) (notamment à baisser la température de soudage lors du soudage thermique du filé-lié (2)),
    et en ce que le filé-lié/filé lié d'emballage forme la paroi de l'emballage et/ou est une partie intégrante de la paroi de l'emballage et des segments du filé-lié/filé lié d'emballage sont soudés les uns aux autres dans la zone de paroi latérale et/ou dans la zone du fond inférieur et/ou dans la zone du couvercle de l'emballage ou de la paroi de l'emballage.
  2. Emballage selon la revendication 1, caractérisé en ce que le filé-lié/filé lié d'emballage est une partie intégrante d'un laminé de paroi d'emballage et le laminé comportant de préférence par ailleurs un film, de préférence un film de matière plastique.
  3. Emballage selon la revendication 2, caractérisé en ce que le film ou le film en matière plastique est placé sur la face intérieure de la paroi d'emballage.
  4. Emballage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la paroi latérale (5) de l'emballage comporte au moins un filé-lié (2), le filé-lié (2) contenant des filaments bicomposants présentant une configuration âme/enveloppe et le rapport en masse du composant de l'âme (10) au composant de l'enveloppe (9) étant de 10 : 90 à 35 : 65, de préférence de 15 : 85 à 35 : 65 et manière préférentielle, de 20 : 80 à 30 : 70, de manière très préférentielle, de 20 : 80 à 25 : 75.
  5. Emballage selon l'une quelconque des revendications 2 à 4, caractérisé en ce qu'au moins un composant de couvercle (8) ou au moins un composant de couvercle (8) plan est une partie intégrante de la paroi d'emballage, le composant de couvercle comportant au moins un filé-lié (2), le filé-lié (2) contenant des filaments bicomposants présentant une configuration âme/enveloppe et le rapport en masse du composant de l'âme (10) au composant de l'enveloppe (9) étant de 35 : 65 à 50 : 50, de préférence de 40 : 60 à 45 : 55.
  6. Emballage selon l'une quelconque des revendications 2 à 5, caractérisé en ce qu'au moins un composant de fond inférieur (7) ou au moins un composant de fond inférieur (7) plan est une partie intégrante de la paroi d'emballage, le composant de fond inférieur comportant au moins un filé-lié (2), le filé-lié (2) contenant des filaments bicomposants présentant une configuration âme/enveloppe et le rapport en masse du composant de l'âme (10) au composant de l'enveloppe (9) étant de 35 : 65 à 50 : 50, de préférence de 40 : 60 à 45 : 55.
EP18206141.6A 2016-03-10 2016-03-10 Emballage Active EP3480352B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18206141.6A EP3480352B1 (fr) 2016-03-10 2016-03-10 Emballage
DK18206141.6T DK3480352T3 (da) 2016-03-10 2016-03-10 Emballage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16159620.0A EP3216905B1 (fr) 2016-03-10 2016-03-10 Matiere non tissee pouvant etre soudee, procede de fabrication d'une matiere non tissee et emballage
EP18206141.6A EP3480352B1 (fr) 2016-03-10 2016-03-10 Emballage

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP16159620.0A Division EP3216905B1 (fr) 2016-03-10 2016-03-10 Matiere non tissee pouvant etre soudee, procede de fabrication d'une matiere non tissee et emballage
EP16159620.0A Division-Into EP3216905B1 (fr) 2016-03-10 2016-03-10 Matiere non tissee pouvant etre soudee, procede de fabrication d'une matiere non tissee et emballage

Publications (2)

Publication Number Publication Date
EP3480352A1 EP3480352A1 (fr) 2019-05-08
EP3480352B1 true EP3480352B1 (fr) 2020-02-12

Family

ID=55527828

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16159620.0A Active EP3216905B1 (fr) 2016-03-10 2016-03-10 Matiere non tissee pouvant etre soudee, procede de fabrication d'une matiere non tissee et emballage
EP18206141.6A Active EP3480352B1 (fr) 2016-03-10 2016-03-10 Emballage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16159620.0A Active EP3216905B1 (fr) 2016-03-10 2016-03-10 Matiere non tissee pouvant etre soudee, procede de fabrication d'une matiere non tissee et emballage

Country Status (6)

Country Link
US (2) US20180002851A1 (fr)
EP (2) EP3216905B1 (fr)
CN (1) CN107177935B (fr)
DK (2) DK3480352T3 (fr)
JO (2) JOP20200179A1 (fr)
MX (2) MX2017003093A (fr)

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IN170021B (fr) * 1987-05-26 1992-01-25 Deita Freyberg Gmbh
US6352948B1 (en) * 1995-06-07 2002-03-05 Kimberly-Clark Worldwide, Inc. Fine fiber composite web laminates
ATE207982T1 (de) * 1996-02-12 2001-11-15 Fibervisions As Teilchen enthaltende fasern
FR2749860B1 (fr) * 1996-06-17 1998-08-28 Freudenberg Spunweb Sa Nappe non tissee formee de filaments continus tres fins
JP2992505B2 (ja) * 1998-04-16 1999-12-20 難波プレス工業株式会社 オレフィン系樹脂複合材による中空体の表皮一体成形
US6752947B1 (en) * 1998-07-16 2004-06-22 Hercules Incorporated Method and apparatus for thermal bonding high elongation nonwoven fabric
US7338916B2 (en) * 2004-03-31 2008-03-04 E.I. Du Pont De Nemours And Company Flash spun sheet material having improved breathability
EP1833910B1 (fr) * 2004-12-17 2009-08-26 ExxonMobil Chemical Patents Inc. Melanges de polymeres et articles non tisses produits a partir de ceux-ci
CN101253289B (zh) * 2005-07-29 2010-09-08 纤维网公司 具有阻液性的双组分片材
US20070122614A1 (en) * 2005-11-30 2007-05-31 The Dow Chemical Company Surface modified bi-component polymeric fiber
DE102006020488B4 (de) * 2006-04-28 2017-03-23 Fitesa Germany Gmbh Vliesstoff, Verfahren zu dessen Herstellung und dessen Verwendung
DE102006044496A1 (de) * 2006-09-21 2008-04-17 Fiberweb Corovin Gmbh Leichtgewichtiges Spinnvlies mit besonderen mechanischen Eigenschaften
DE102007018579B4 (de) * 2007-04-18 2012-03-15 Abts- Advanced Bag Technology & Service Gmbh Zementsack und Herstellverfahren
CN101532211A (zh) * 2009-04-19 2009-09-16 山东泰鹏无纺有限公司 再生涤纶纺粘热轧无纺布
CN102086566A (zh) * 2010-11-16 2011-06-08 安徽润维无纺布有限公司 加速降解聚丙烯纺粘非织造材料及其工艺

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Also Published As

Publication number Publication date
DK3216905T3 (da) 2019-09-23
JOP20200179A1 (ar) 2017-06-16
CN107177935A (zh) 2017-09-19
EP3480352A1 (fr) 2019-05-08
MX2017003093A (es) 2018-08-15
DK3480352T3 (da) 2020-04-27
CN107177935B (zh) 2021-11-26
JO3652B1 (ar) 2020-08-27
US20180002851A1 (en) 2018-01-04
US20210054550A1 (en) 2021-02-25
MX2020009501A (es) 2021-05-20
EP3216905B1 (fr) 2019-07-03
EP3216905A1 (fr) 2017-09-13

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