EP3480352A1 - Emballage - Google Patents

Emballage Download PDF

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Publication number
EP3480352A1
EP3480352A1 EP18206141.6A EP18206141A EP3480352A1 EP 3480352 A1 EP3480352 A1 EP 3480352A1 EP 18206141 A EP18206141 A EP 18206141A EP 3480352 A1 EP3480352 A1 EP 3480352A1
Authority
EP
European Patent Office
Prior art keywords
packaging
spunbonded
component
filaments
fabric
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.)
Granted
Application number
EP18206141.6A
Other languages
German (de)
English (en)
Other versions
EP3480352B1 (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 DK18206141.6T priority Critical patent/DK3480352T3/da
Priority to EP18206141.6A priority patent/EP3480352B1/fr
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
    • D04H3/005—Synthetic yarns or filaments
    • 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
    • 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 a packaging, in particular a packaging bag with at least one weldable spunbond or packaging spunbonded, wherein the spunbonded nonwoven endless filaments, which preferably consist of thermoplastic material.
  • spunbonded nonwoven filaments are used.
  • continuous filaments differ because of their quasi-endless length of staple fibers, which have much smaller lengths of, for example, 10 mm to 60 mm.
  • a spunbond or packaging spunbond web is produced by means of a spunbond process as a spunbond nonwoven.
  • spunbonded nonwovens or packaging spunbonded nonwovens for packaging walls - in particular of bag-shaped packaging - are known from 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.
  • Spunbonded or spunbonded nonwoven packaging walls are also known, in particular, for sack-shaped packages for bulk goods with filling weights of 25 to 500 kg. Spun nonwovens are also used for cement sacks in this context.
  • a tube is first of all produced (so-called "tube") and opposite side ends of the nonwoven web are connected to one another, in particular welded together. Then the tube is cut to the desired bag length, the resulting product is folded or folded and then a bottom sheet is placed as a bottom component and a lid sheet as a lid component and then welded to the bag body.
  • the previously known or prepared in the manner described above sack-shaped packaging can often be in terms of strength to be desired.
  • the spunbonded fabrics used for the production of the known packaging bags leave something to be desired in terms of their processability. This relates in particular to the weldability or sealability of the spunbonded nonwovens in the production of a packaging or a packaging sack.
  • the invention is based on the technical problem of packaging, in particular a packaging bag with a weldable Spun fleece or packaging spunbond specify which spunbond is on the one hand in a relatively simple and inexpensive manner processed or weldable and on the other hand also satisfies all requirements in the processed state in terms of strength or stability.
  • the continuous filaments or at least one component of the continuous filaments of the weldable spunbonded nonwoven fabric in particular the weldable packaging spunbonded nonwoven 4 to 25 wt .-% of the filler, preferably 5 to 20 wt .-% and very preferably 6 to 15 wt .-% of the filler.
  • the individual proportions of the constituents of the endless filaments - in particular the plastic component or the plastic components of the continuous filaments - add up to a total of 100 wt .-% 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 most preferably the filler is calcium carbonate. Calcium carbonate has proved particularly useful as a filler for the weldable spunbonded fabric to solve the technical problem. Basically, 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 spinnable spunbonded fabric are recommended to have at least 5% by weight of filler or calcium carbonate, preferably at least 7% by weight, more preferably from 7 to 25% by weight, preferably from 8 to 22% by weight, and most preferably 10% to 20 wt .-% of filler or to calcium carbonate as a filler. It lies thereby in the context of the invention that the filler is homogeneously or substantially homogeneously distributed in the continuous filaments or, according to the recommended embodiment, is arranged at least on the surface of the endless filaments or substantially on the surface of the endless filaments.
  • a particularly proven embodiment of the invention is characterized in that the continuous filaments of the weldable spunbonded nonwoven fabric are formed 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 of the bicomponent filaments has the same or preferably a lower melting point than at least one second plastic component of the multicomponent filaments or bicomponent filaments and that the filler contains at least the first equal or lower melting plastic component is or is contained substantially or only in the first equal or lower melting plastic component.
  • the multicomponent filaments or the bicomponent filaments of the weldable spunbonded web have a core-sheath configuration.
  • the filler is expediently contained in the sheath component of these multicomponent filaments or bicomponent filaments.
  • the equal or lower melting plastic component of the multicomponent filaments or bicomponent filaments of the weldable spunbonded nonwoven fabric is the sheath component and the filler is then at least in contain this shell component or contain substantially or only in the shell component.
  • the spinnable spunbonded nonwoven fabric is formed as spunbonded bicomponent filaments of bicomponent filaments with core-shell configuration.
  • the equal or lower melting component is in the shell and consists for example of a polypropylene copolymer or substantially of a polypropylene copolymer. It should be noted that it is within the scope of the invention that in the shell component additionally the filler - preferably in the above specified proportions - is included.
  • the higher or equal melting component is arranged in the core of the bicomponent filaments and consists for example of polypropylene or substantially of polypropylene.
  • a polyethylene can be used as the lower-melting component or as the sheath component of the bicomponent filaments or multicomponent filaments
  • 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 of 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 polyolefin or consist essentially of polyolefins. In principle, however, the use of other thermoplastics or their blends for the components is 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.
  • this is the lower melting plastic component in the filament and most preferably the lower melting component is the sheath component of a core-sheath configuration of the bicomponent filaments or multi-component filaments.
  • the filler - especially the calcium carbonate - arranged in the arranged on the surface of the filaments - preferably lower melting plastic component, preferably contained in the lower melting plastic component in the jacket 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 - preferably lower melting - plastic component - especially the shell component - the second - preferably higher melting - component - In particular to the core component - to 20: 80 to 30: 70, preferably 20: 80 to 25: 75.
  • a particularly preferred embodiment of the invention is characterized in that the weldable spunbonded fabric is a calendered spunbonded nonwoven. Empfohlene admir a surface of this spunbond is calendered smooth and a surface profiled calendered. But it can also be calendered smoothly both surfaces of the spunbonded fabric. 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 material transversely to the machine direction (CD) is either equal to 1 or greater than 1, preferably greater than 1 , 1 and especially preferably greater than 1.2.
  • Machine direction means in particular the conveying direction of the deposited spunbonded on a shelf or on a storage device.
  • a weldable spunbonded fabric is produced by the following method: First, endless filaments are spun by means of a spinnerette and then these filaments are cooled in a cooling device and subsequently drawn by means of a drawing device and then deposited on a spinneret support stored.
  • the weldable spunbond or weldable packaging spunbond web is produced as a spunbond nonwoven by a spunbond process.
  • the cooling device is subdivided into at least two cabin sections arranged one above the other or in the direction of filament flow, wherein cooling air with different convective heat removal capacities - in particular cooling air with different temperatures - is introduced into the filament flow space from these cabin sections.
  • the cooling device has only two such one above the other or in Filamentströmungsraum successively arranged cabin sections.
  • the cooling device is connected via an intermediate channel - in particular via an intermediate channel converging in the direction of filament flow - to a draw channel of the drawing device. The endless filaments are thus guided through the cooling device, then through the intermediate channel and then through the lower channel.
  • the filaments are deposited to the spunbonded web or spunbonded on a storage device, which is preferably designed as Ablagesiebband or endlessly circulating Ablagesiebband.
  • a storage device which is preferably designed as Ablagesiebband or endlessly circulating Ablagesiebband.
  • a particularly recommended embodiment of the method and the apparatus for producing a weldable spunbonded nonwoven fabric is characterized in that the aggregate of cooling device, intermediate channel and connected thereto Unterziehkanal is designed as a closed unit and that except the supply of cooling air in the cooling device no further air supply in this closed aggregate takes place.
  • preference is given to arranging at least one diffuser between the underrun channel and the depositing device, through which the filaments are guided in the filament flow direction to the depositing device.
  • At least two diffusers are arranged one behind the other between the lower draw channel and the storage device.
  • a recommended embodiment of the invention is characterized in that the filaments are guided in the region of the spinnerette or between the spinnerette and the cooling device by a Monosabsaugungsvorraum.
  • the gases exiting the filaments in the form of monomers, oligomers, decomposition products and the like are removed from the filament forming space below the spinnerette or apparatus.
  • the spun-bonded non-woven fabric deposited from the endless filaments is preconsolidated or solidified with at least one calender.
  • the calendering can take place inline or offline. It is recommended that a calender for such calendering have an embossing area of from 10 to 90%, and preferably from 15 to 35%, and more preferably from 18 to 30%.
  • only one of two calender rolls has an engraving and preferably the embossing surface specified above and the opposite or associated calender roll is smooth or substantially smooth and formed 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 engraved points of a calender roll or the calender roll with engraving is greater than 30 / cm 2 and preferably greater than 40 / cm 2 . Particularly preferably, the number of engraved points of a calender roll or calender roll with engraving is more than 45 / cm 2 . According to a proven embodiment, the engraving points of a calender roll or the calender roll engraved in plan view diamond shape. According to a further embodiment, the spunbonded fabric is calendered with a calender of two calender rolls with a smooth surface.
  • the calendering of a spunbonded fabric can also take place with a belt calender.
  • a variant is characterized in that the calendering is performed at least two stages 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 of two calender rolls with a smooth surface or calendered with a belt calender.
  • a surface may be plastic coated and a surface of steel or substantially consist of steel.
  • calendered or preconsolidated / solidified spunbonded nonwovens can be particularly advantageous welded or welded into packages.
  • the produced spunbonded webs can be used in During the production of packaging easily and simply combined or coated with other layers, especially with plastic films and / or meltblown webs or other spunbond nonwovens.
  • spunbonded nonwovens with optimized filing quality can be obtained, and very homogeneous spunbonded nonwovens can be produced.
  • spunbond storage can be optimized insofar as thin areas and thick areas in the spunbonded fabric are considerably reduced in comparison to other known methods.
  • the span between the lightest thin spot and the lightest analyzed square and The heaviest thick spot or the heaviest analyzed square are significantly reduced compared to other known manufacturing processes.
  • the span can be lowered, for example, from about 30 g / m 2 in other known methods to about 15 g / m 2 in the method used in the invention.
  • the invention is based on the finding that the spunbond nonwovens prepared as described above can be excellently processed into packaging, for example into packaging sacks, and in particular can be welded simply and easily.
  • the invention is further based on the finding that the welding temperature for welding these spunbonded nonwovens or packaging spunbonded nonwovens according to the invention in comparison to those known from others Process produced spun webs can be significantly lowered.
  • This advantageous lowering of the welding temperature results especially in combination with the filler according to the invention, in particular in the form of calcium carbonate.
  • the weldable spunbonded nonwoven webs produced by the preferred method advantageously have fewer thin spots than other spunbonded nonwovens, and consequently hardly any thin spots can be damaged during welding.
  • the spunbonded nonwovens are characterized by optimum processability, in particular weldability, and to that extent they have optimal basic prerequisites for the production of packaging.
  • Spunbond nonwovens in which the ratio of the strength or tensile strength of the spunbond MD in the machine direction (MD) to the strength or tensile strength of the spunbond cross-machine direction (CD) is equal to 1 or greater than 1 have particularly advantageous properties for the production of packaging. is preferably greater than 1.1, preferably greater than 1.2, and more preferably greater than 1.25. - The explained preferred features of the spunbonded fabric or the process for producing the spunbonded nonwoven fabric and the advantages achieved thereby combine optimally with the filler according to the invention or with the filler content according to the invention and the advantages achieved thereby.
  • the invention relates to a packaging, in particular a packaging bag - for example, a cement bag - 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 fabric explained above, wherein the spunbonded nonwoven forms the packaging wall and / or is part of the packaging wall and wherein sections of the spunbonded nonwoven or the spunbonded nonwoven in Sidewall region and / or in the bottom region and / or in the lid region 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 lid component, which is welded to the rest of the packaging wall or to the side wall of the packaging.
  • the flat lid component and / or the flat bottom component of the packaging consists / consist of at least one spunbonded fabric or respectively of a spunbonded fabric and preferably of the same spunbonded material as the rest of the packaging wall or the side wall.
  • spunbonded nonwoven multi-component filaments or bicomponent filaments with a first or lower melting plastic component on the outer surface are used for the side wall and for the flat lid component and / or the flat bottom component of the packaging wall
  • a particularly preferred embodiment of the invention is characterized in that the spun nonwovens have for the flat lid component and / or for the flat bottom component a higher proportion of the first or lower melting plastic component than the spunbond or the spunbonded fabric for the side wall of the packaging wall.
  • the proportion of the arranged on the outer surface of the multicomponent or bicomponent filaments first or lower melting plastic component in the spunbonded nonwoven for the flat lid component and / or for the flat bottom component 1.2 times to 3.5 times, preferably 1.5 times 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 nonwoven or the spunbonded nonwoven for the side wall of the packaging.
  • the melting points of the two plastic components may also be the same or substantially the same.
  • a particularly preferred embodiment of the invention is characterized in that a spunbond or spunbonded nonwoven fabric is / are part of a package wall laminate and that the laminate preferably has at least one film, preferably a plastic film, in addition to the spunbonded nonwoven.
  • both the side wall and the flat lid component and / or the flat bottom component of the packaging wall can be designed as such a packaging wall laminate.
  • a highly 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 spunbonded fabric of the cover component comprises multicomponent filaments or bicomponent filaments or consists essentially of multicomponent filaments or bicomponent filaments 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 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 substantially the same.
  • the packaging according to the invention in particular the packaging bag according to the invention - at least a flat bottom component which is part of the packaging and at least one - in particular a spunbond or spunbonded in detail specified above.
  • This spunbond or packaging spunbonded web forms the bottom component and / or is a component of the bottom component.
  • the at least one spunbonded fabric of the bottom component is preferably firmly connected to the side wall or with the spunbonded material of the side wall of the packaging, preferably welded.
  • the invention is based on the finding that the weldable spunbonded fabric or weldable packaging spunbonded fabric can be produced in a simple, inexpensive and problem-free manner and can be processed to form packaging, in particular can be welded. Of particular importance within the scope of the invention is that the welding temperatures required during welding of the spunbonded nonwovens can be significantly reduced in comparison with the processing measures known from practice. Above all, it is possible to work with a homogeneous welding temperature.
  • the invention is further based on the finding that in the spunbonded fabric for welding problematic thin areas and thick places largely can be avoided. - Above all, the invention is based on the finding that the advantages set out above, in particular by the combination of the filler according to the invention - especially the calcium carbonate - on the one hand with the realization of the inventive spunbond process on the other hand come about.
  • the invention is based on the finding that the filler according to the invention, in particular in the form of calcium carbonate, requires better weldability of the spunbonded nonwoven. It is assumed that the filler or the calcium carbonate on the one hand absorbs less heat than the associated plastic component and on the other hand at the same time has a higher thermal conductivity than the plastic. The result of this is that the filler or the calcium carbonate metered in can transfer the heat introduced to the plastic to be melted or softened, so that the associated plastic component can be melted in a targeted manner.
  • the invention is also based on the finding that a filler in the form of calcium carbonate improves the UV stability of the filaments or spunbonded nonwovens.
  • the optimum processability or weldability of a weldable spunbonded nonwoven furthermore results from the advantageous filing quality of the filaments or the spunbonded fabric when the spunbond process according to the invention is realized.
  • a substantially better homogeneity of the spunbonded fabric is achieved in comparison to other known methods, and as a result the processing temperature or welding temperature for the spunbonded nonwoven fabrics can be considerably reduced in comparison to known nonwoven fabrics.
  • the spunbonded nonwovens and the packages made therefrom according to the invention have excellent strength. This applies both to the packaging wall itself and to connecting seams - in particular welded seams - between packaging wall regions.
  • the packaging wall and the connecting seams between the packaging wall regions are characterized by high mechanical resistance.
  • damage to the packaging wall or the weld seams between the packaging wall areas rarely or not at all occurs.
  • a tearing open of the packaging wall is barely observed in contrast to the packaging bags known from practice.
  • a weldable spunbonded fabric or a packaging produced therefrom according to the invention have further advantages. On the one hand, themaschineswandung can be cleaned without major problems, especially to be cleaned from the outside.
  • the packaging according to the invention is also distinguished by an appealing external visual appearance. Furthermore, in the case of a weldable spunbonded fabric produced according to the invention or in the case of the packaging produced therefrom, excellent barrier effects can be set, so that in particular an additional outer coating of the packaging is not required.
  • Fig. 1 is a packaging according to the invention in the form of a packaging bag 1 for bulk materials - in particular for cement - shown.
  • the packaging wall of this packaging bag 1 has weldable spun nonwovens 2.
  • These spunbonded nonwovens 2 or packaging spunbonded nonwovens consist of 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 for improving the weldability of the filaments or the spunbonded fabric 2 and in particular for reducing the welding temperature during the thermal welding of the filaments or the spunbonded fabric 2.
  • the in Fig. 1 illustrated packaging bag 1 has a side wall 5 of a spunbonded, which was welded with its side ends 6 as it were to a hose.
  • a flat bottom component 7 in the form of a spunbonded fabric 2 is arranged and welded to the side wall 5 of the packaging bag 1.
  • a flat lid component 8 is arranged in the form of a spunbonded fabric 2 in the lid region of the packaging bag 1 and with the Sidewall 5 welded.
  • a plastic film can still be arranged, however, in the embodiment according to Fig. 1 not shown.
  • the spunbonded nonwovens used for the side wall 5, the bottom component 7 and the cover component 8 of the packaging bag 1 preferably and in the exemplary embodiment consist of bicomponent filaments with a core-shell configuration (see also FIG Fig. 3 ).
  • the lower-melting plastic component is the sheath component 9 and 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 only contained in the sheath component 9 of the bicomponent filaments.
  • Fig. 2 is a particularly preferred apparatus for producing the spunbonded nonwovens 2 (spunbond nonwovens) shown.
  • the endless filaments 3 are first spun here by means of a spinnerette 11 and then passed through a monomer extraction device 12. Subsequently, the endless filaments 3 in the cooling device 13 are cooled.
  • the cooling device 13 preferably and in the exemplary embodiment has two cabin sections 14, 15 arranged one above the other or in the filament flow direction, from which cooling air of different temperature is introduced into the filament flow space. Following the cooling device 13, the endless filaments 3 pass into the intermediate channel 16 converging in the filament flow direction. An underrun channel 17 of the drawing device 18 adjoins this intermediate channel 16. This configuration is used to stretch the endless filaments 3.
  • the continuous filaments 3 emerging from the underrun channel 17 are then preferred and, in the exemplary embodiment, guided by 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, can penetrate through the ambient air.
  • the endless filaments 3 are then deposited on the filing belt 21 designed as a storage device for spunbonded fabric 2.
  • the spunbonded nonwoven 2 is conveyed away in the machine direction M by means of the filing screen belt 21.
  • the spun-bonded nonwoven 2 is calendered or preconsolidated / solidified by means of a calender 22.
  • a calender roll 23 is provided with an engraving, not shown, and an interacting or associated calender roll 24 of the calender 22 is preferably and in the embodiment equipped with a smooth surface.
  • a spunbonded fabric 2 produced in the manner explained can be used simply and easily for a packaging wall (side wall 5 and / or bottom component 7 and / or cover component 8) of the packaging sack 1.
  • Fig. 3 are bicomponent filaments for a weldable spunbonded web 2 shown.
  • the proportion of the core component 10 is greater than that of the shell component 9.
  • the filler in the form of calcium carbonate is in the bicomponent filaments according to FIG Fig. 3 contained exclusively in the shell component 9, which corresponds to the lower-melting plastic component.
  • the bicomponent filaments according to Fig. 3a are particularly suitable for spunbonded fabrics 2, which form the side wall 5 of a packaging bag 1.
  • the bicomponent filaments according to Fig. 3b a much higher proportion of the shell component 9 or the lower melting Plastic component on.
  • the filler is preferred and included in the exemplary embodiment exclusively in the shell component 9.
  • the bicomponent filaments according to Fig. 3b are especially suitable for spunbonded nonwovens 2 or spunbonded areas, which must be welded.
  • the sheath component 9 with the lower-melting plastic component provides sufficient welding material.
  • the welding is preferably carried out with the proviso that only or substantially the shell component 9 melts or is welded.
  • the bicomponent filaments are suitable according to Fig. 3b especially for the bottom 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 (shell component 9) to the higher-melting plastic component (core component 10) may be in the embodiment according to Fig. 3a 20: 80 amount.

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)
EP18206141.6A 2016-03-10 2016-03-10 Emballage Active EP3480352B1 (fr)

Priority Applications (2)

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

Applications Claiming Priority (2)

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

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

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

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EP18206141.6A Active EP3480352B1 (fr) 2016-03-10 2016-03-10 Emballage
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

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US (2) US20180002851A1 (fr)
EP (2) EP3480352B1 (fr)
CN (1) CN107177935B (fr)
DK (2) DK3480352T3 (fr)
JO (2) JO3652B1 (fr)
MX (2) MX382766B (fr)

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Publication number Priority date Publication date Assignee Title
US12064827B1 (en) * 2021-06-13 2024-08-20 Garvey Holding LLC Methods, systems, and apparatus for joining metallic fabrics

Citations (5)

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EP0292948A2 (fr) * 1987-05-26 1988-11-30 Detia Freyberg Gmbh Dispositif pour relacher lentement un pesticide
WO2005098119A1 (fr) * 2004-03-31 2005-10-20 E.I. Dupont De Nemours And Company Materiau feuille a filage rapide a respirabilite amelioree
DE102006020488A1 (de) * 2006-04-28 2007-10-31 Fiberweb Corovin Gmbh Polymerfaden und Vliesstoff
WO2008034613A2 (fr) * 2006-09-21 2008-03-27 Fiberweb Corovin Gmbh Non-tissé léger à propriétés mécaniques spéciales
DE102007018579A1 (de) * 2007-04-18 2008-10-23 Elkhouli, Ihab Abdalla Radwan Zementsäcke

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US6352948B1 (en) * 1995-06-07 2002-03-05 Kimberly-Clark Worldwide, Inc. Fine fiber composite web laminates
WO1997030199A1 (fr) * 1996-02-12 1997-08-21 Fibervisions A/S Fibres contenant des particules
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
CN101080461B (zh) * 2004-12-17 2010-09-22 埃克森美孚化学专利公司 多相聚合物共混物和由此制备的模制品
DE602006004754D1 (de) * 2005-07-29 2009-02-26 Fiberweb Inc Flüssigkeitundurchlässiger vliesstoff aus bikomponenten filamenten
US20070122614A1 (en) * 2005-11-30 2007-05-31 The Dow Chemical Company Surface modified bi-component polymeric fiber
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

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
EP0292948A2 (fr) * 1987-05-26 1988-11-30 Detia Freyberg Gmbh Dispositif pour relacher lentement un pesticide
WO2005098119A1 (fr) * 2004-03-31 2005-10-20 E.I. Dupont De Nemours And Company Materiau feuille a filage rapide a respirabilite amelioree
DE102006020488A1 (de) * 2006-04-28 2007-10-31 Fiberweb Corovin Gmbh Polymerfaden und Vliesstoff
WO2008034613A2 (fr) * 2006-09-21 2008-03-27 Fiberweb Corovin Gmbh Non-tissé léger à propriétés mécaniques spéciales
DE102007018579A1 (de) * 2007-04-18 2008-10-23 Elkhouli, Ihab Abdalla Radwan Zementsäcke

Also Published As

Publication number Publication date
JOP20200179B1 (ar) 2024-04-18
EP3216905A1 (fr) 2017-09-13
MX377495B (es) 2025-03-10
MX382766B (es) 2025-03-13
EP3480352B1 (fr) 2020-02-12
MX2020009501A (es) 2021-05-20
CN107177935B (zh) 2021-11-26
US20210054550A1 (en) 2021-02-25
DK3216905T3 (da) 2019-09-23
EP3216905B1 (fr) 2019-07-03
CN107177935A (zh) 2017-09-19
MX2017003093A (es) 2018-08-15
DK3480352T3 (da) 2020-04-27
JOP20200179A1 (ar) 2017-06-16
US20180002851A1 (en) 2018-01-04
JO3652B1 (ar) 2020-08-27

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