EP3257776B1 - Sac et son procédé de fabrication - Google Patents

Sac et son procédé de fabrication Download PDF

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Publication number
EP3257776B1
EP3257776B1 EP17170571.8A EP17170571A EP3257776B1 EP 3257776 B1 EP3257776 B1 EP 3257776B1 EP 17170571 A EP17170571 A EP 17170571A EP 3257776 B1 EP3257776 B1 EP 3257776B1
Authority
EP
European Patent Office
Prior art keywords
sack
load
load element
region
surface element
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
EP17170571.8A
Other languages
German (de)
English (en)
Other versions
EP3257776A1 (fr
Inventor
Thomas Bruns
Peter LÜTTMANN
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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
Priority claimed from DE102016119113.2A external-priority patent/DE102016119113A1/de
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP3257776A1 publication Critical patent/EP3257776A1/fr
Application granted granted Critical
Publication of EP3257776B1 publication Critical patent/EP3257776B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/06—Handles
    • B65D33/065—Integral handles
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/06—Handles
    • B65D33/10—Handles formed of similar material to that used for the bag

Definitions

  • the present invention relates to a sack according to the preamble of independent claim 1 and to a method for producing a sack.
  • sacks that can be filled with bulk goods are known in principle.
  • sacks usually comprise a shell that forms an interior space into which the bulk material can be introduced.
  • Building materials, such as cement or the like, for example are often used as bulk goods, although sacks, for example for consumer goods, are also increasingly being used in the end consumer sector.
  • products for animals, especially animal feed are often offered in sacks.
  • different types of materials are provided for these sacks, with sacks made from a fiber material, in particular a fabric, in particular having a high level of strength and thus a high possible load-bearing capacity guarantee.
  • the handles being arranged, for example, in a filling area of the sack, so that a user of the sack grips both handles and the load is essentially halved via the handles.
  • the handles are usually attached to an inside of the sack parallel to the cover, so that the force for lifting the handle is introduced into the sack as a shear force and the connection is correspondingly loaded.
  • the handles usually protrude from the filling opening of the sack, so that the appearance of the sack is impaired.
  • a closure element is usually only possible below the handle arrangement, in particular since the handles would otherwise protrude through the closure element and prevent closure.
  • a large part of the wrapping material is necessary on the top of the sack, which, however, is not available for the actual function of accommodating the bulk material.
  • arranging the handles on the top results in various disadvantages, since it is difficult to pivot the sack, especially if the user does not use another hand to support the sack bottom.
  • the object of the present invention to at least partially remedy the above disadvantages known from the prior art.
  • a sack that can be filled with a bulk material has a cover with at least one surface element, the cover having a fabric and the surface element having a grip means.
  • the grip means comprises a load element to which a load-bearing force for lifting the sack can be applied.
  • the load element is designed in such a way that it, i.e. the load element, protrudes at least in some areas with respect to an outside of the surface element at least in a load state in which the load-bearing force acts on the load element.
  • the sack is preferably a pinch-bottom sack or a pinch-bottom sack.
  • Such a sack can preferably have a gusset and a folded bottom, so that it can be used particularly favorably for palletizing. Furthermore, such a shape of the sack offers a simple possibility of providing a mechanism for opening, such as, for example, several folds at the top.
  • a wide variety of materials can be used as bulk material in the context of the present invention.
  • An interior space of the sack which can be filled with the bulk material can therefore preferably be formed by the shell of the sack.
  • a sack according to the invention can be suitable for handling animal feed or food.
  • areas of application such as building materials, in particular cement or other materials, preferably with a high density and thus a high weight per cm 3 , are also possible.
  • a region of the casing should preferably be understood which has an at least partially flat extension. In this case, the surface element can be folded in, for example, when the sack is not filled, so that the flat extension is only visible when the sack is filled.
  • the grip means can preferably be a handle which can be grasped in particular from the outside or in which it is possible to engage in particular from the outside.
  • the grip means has the load element.
  • the load element can for example be arranged directly or indirectly on the surface element, in particular on the outside or inside of the surface element, with at least a first end of the load element, particularly preferably with a first and a second end of the load element.
  • the application of the load capacity can be understood to mean that the weight of the sack with or without filling by the bulk material at least partially counteracts the load capacity when it is lifted, so that, for example, a load arises in a connection area of the load element with the surface element.
  • the fact that the load element protrudes from the outside at least in some areas can thus be understood in particular to mean that the load element protrudes relative to the outside or in comparison to the outside.
  • the load element can therefore preferably extend at least in some areas in a direction which is essentially perpendicular to the surface element and / or parallel to the load-bearing capacity.
  • the load element can thus be designed, for example, as an elevation on the surface element.
  • the load element can advantageously be at least partially spaced from the outside of the surface element.
  • the outside of the surface element can in particular be understood as the outer surface of the surface element.
  • the load element can thus preferably extend in an arc-like manner on the outside of the surface element, at least in the load state.
  • the load state can in particular be a state of the grip means.
  • the load element and / or the surface element can preferably be designed to be flexible. As a result, the sack can be particularly easily collapsed and can therefore be stored in the unfilled state with little space.
  • the flexibility of the material also offers advantages in the storage of the bulk material itself, since the shape can thus be at least partially adaptable to the content or the load conditions.
  • the load element can furthermore be arranged directly or indirectly on the surface element.
  • a sack according to the invention is therefore particularly easy to handle.
  • the handle means can be hidden, so that the optics of the sack can be improved, whereby ultimately products that can be sold in sacks, for example, can also be easier to advertise.
  • the design freedom which such an arrangement of the handle means enables is high, so that various design options for a sack with such a handle means can arise.
  • a gripping means according to the invention can also ensure, in particular, good force transmission, so that plastic flow in the area of the gripping means is reduced or can even be excluded.
  • one grip means can be sufficient for bringing in the full load-bearing capacity.
  • the constructive freedoms can also extend to the grip means, so that this can be configured in a particularly comfortable manner.
  • a filling area of the sack can be designed without gripping means, so that the total area of the envelope can be used essentially or completely for filling, closing and folding the sack and thus the material requirement for the sack is reduced.
  • a fabric can be understood to be a material which is preferably formed from strips or tapes which, for example, have a pretensioning through stretching or are brought into a state of internal stress.
  • the bands can preferably be arranged at least partially perpendicularly or essentially perpendicularly to one another, so that in particular a checkerboard-like weave pattern is created.
  • the weave pattern is preferably regular, with in particular part of the bands of the fabric extending parallel to one another in a first direction and another part of the bands extending parallel to one another in a second direction, the first and second directions preferably being perpendicular.
  • the fabric can also advantageously be surrounded by a plastic layer, wherein the plastic layer can in particular be designed as a film. This can improve the appearance and at the same time stabilize the woven tapes.
  • the tapes can be glued to the plastic layer or the plastic layer can be applied as a melt.
  • the bands of the fabric preferably have a plastic, such as a polyolefin, particularly preferably a polypropylene.
  • the tapes can also be made of polyolefin or polypropylene for ease of manufacture.
  • the width of the tapes which can strongly influence the properties of the weave pattern, can be between 2 mm and 4 mm, preferably between 2.3 mm and 3.4 mm
  • the weight per unit area of the fabric is preferably between 50 g / m 2 and 100 g / m 2 , with about 70 g / m 2 being particularly suitable.
  • the entire fabric consists of a polyolefin, particularly preferably a polypropylene, so that a pairing of two different materials is not necessary. This can, for example, simplify the manufacture of the sack and thus save costs, since only one material is required for the fabric.
  • the plastic layer can also have a particularly biaxially oriented polypropylene, the layer thickness of the plastic layer preferably being ⁇ 50 g / m 2, particularly preferably ⁇ 40 g / m 2 .
  • an adhesion promoter can also be provided, which promotes a connection between the plastic layer and the strips.
  • the grip means can be brought into a relieved state and into the load state, the load element in the relieved state terminating at least essentially flush with an inside and / or the outside of the surface element.
  • the relief state is preferably defined in that the load-bearing force does not act on the load element of the grip means or no force acts on the load element, so that the load element has little or a low internal stress.
  • the grip means can preferably be in the unloaded state when the sack is sold.
  • an opening can be pre-punched in the surface element so that a user can first detach the load element from the surface element in order to apply the load-bearing force and then transfer it to the load state.
  • the load state can be a state of the gripping means and can furthermore be defined by the fact that a force acts, preferably the carrying force at which the sack can be carried, lifted or otherwise moved, for example.
  • the inside and / or the outside can preferably lie in a plane with the main direction of extent of the surface element, or run at least partially tangential to the surface element.
  • the inner or outer surface of the load element can be parallel to the inner or outer side of the Area element lie.
  • the load element of the sack has a reinforcement means, in particular wherein the reinforcement means can preferably be arranged centrally on the load element.
  • the reinforcing agent can preferably be an additional component.
  • the reinforcement means can be a reinforcement label, in particular which can be applied to an inner and / or outer surface of the load element.
  • the reinforcing means can form a second layer beneath a first layer of the load element.
  • the reinforcement means can also have several reinforcement labels. The reinforcing means thus preferably ensures a thickening at least in a partial area of the load element, so that the load absorption of the grip means is improved overall and thus the strength of the grip means is increased.
  • the reinforcement means can also advantageously be attached to the surface element and / or the load element, in particular wherein the reinforcement means can be welded to the surface element and / or the load element.
  • the reinforcement means can form a second layer below a first layer of the load element.
  • the reinforcing means can be firmly attached to the surface element and / or to the load element, particularly preferably hot-air welded or glued. This enables a reliable connection of the reinforcing means with the surface element and / or the load element with little effort, with hot air welding of the reinforcing means having at least the advantage that a clean connection is possible without adhesive residue on the sack, without the need for high welding temperatures.
  • Gluing has at least the advantage that glue, which can preferably be a hotmelt glue, is particularly cheap and further apparatus for making the connection can be kept simple, since only the glue needs to be applied.
  • the reinforcing agent can also preferably be attached to the outside and / or an inside of the surface element.
  • the reinforcement means can be attached to an outer and / or inner surface of the load element.
  • the fastening of the reinforcement means on the inside of the load element and / or the surface element has at least the advantage that the reinforcement means is not or only slightly perceptible at least at the first impression of the sack, so that the optics of the sack is not impaired by the reinforcement means and that Reinforcement means can for example be manufactured cheaply, especially since it cannot be directly visible.
  • Attaching the reinforcement means on the outside has the advantage that the reinforcement means can be used at the same time to emphasize the grip means, so that a user of the sack is in particular informed directly of the presence of the grip means and does not overlook it. Furthermore, the reinforcement means can at the same time offer protection at least for the load element against environmental conditions when the reinforcement means is arranged on the outside.
  • the reinforcement means can be designed in one piece with the load element.
  • the load element can preferably arise in that the reinforcement means, in particular a reinforcement label, is attached to the surface element, so that only one manufacturing step is necessary in order to arrange the load element with sufficient strength on the surface element.
  • the number of components required can be reduced, so that the manufacturing costs for the sack are further reduced.
  • the grip means in the surface element and / or in the reinforcement means has at least one opening in a sack according to the invention, so that the load element can be moved.
  • Such an opening can, for example, be an interruption in the surface element.
  • the fabric of the surface element cannot be connected in this area, at least in sections, so that the load element can be moved relative to an area of the surface element at least in a certain area of the load element.
  • two openings can be provided so that the load element is arranged between the two openings.
  • an opening in the surface element and / or in the reinforcement means results from simple manufacturing methods, such as, for example, separating the material by cutting or punching a high degree of freedom of movement of the load element and / or a simple production method of the same.
  • the load element in particular can only partially protrude from the outer surface of the surface element in the load state, so that a user can reach under the load element with his hand and the load capacity at least partially via a curvature in which the load element is stepless can pass into the surface element, is transferable.
  • the opening can comprise an incision.
  • the load element can be manufactured by providing at least one, preferably two openings, or the opening can create a passage in the surface element through which the load element can be passed so that, for example, the load element can be attached to the inside of the surface element.
  • An incision can preferably be understood to mean a separation of the material, in particular with the width of the incision being zero or essentially zero and / or preferably no material removal taking place when the incision is made.
  • the opening can preferably extend along the load element.
  • the opening can also advantageously be a cutout, which can preferably have a width of 2 mm to 5 mm.
  • the width can preferably extend perpendicular to the main direction of extent of the load element or the opening.
  • Such an opening has the advantage that it is easy to manufacture and has little influence on the strength of the sack or the grip means.
  • the structure of the fabric can only be slightly interrupted and, through a corresponding design, forms of the invention that promote strength can nevertheless be provided.
  • the engagement of the user in the grip means can also be facilitated by the design of the opening as a recess, in particular with the mentioned width.
  • the opening parallel to the load element has a length of> 90 mm, preferably from 100 mm to 180 mm.
  • the load element can preferably have the same length as the opening in the case of a one-piece design with the surface element, the length extending parallel to the load element.
  • At least one first layer of the load element can advantageously be formed in one piece with the surface element.
  • the load element can be designed completely in one piece with the surface element.
  • the load element can be formed by providing an opening in the surface element.
  • the outside of the surface element and the outside surface of the load element can also merge into one another in a stepless manner. This can be particularly inexpensive to manufacture and, through a favorable flow of force, bring about a high degree of strength of the grip means.
  • at least or only an upper or lower layer of the load element can be designed in one piece with the surface element, so that the advantages mentioned above result, wherein the respective other side of the load element can be reinforced at the same time, for example by a reinforcement means.
  • the opening has a rounded portion in a load application area of the grip means.
  • a rounding can advantageously be understood to mean a radius of a circular, oval or elliptical end.
  • the fillet can advantageously also be a circle that is punched, for example, at the end of an incision.
  • the load application area of the grip means can be understood to mean the area which is located in particular directly on the load element or adjacent to the load element, so that in the load application area, for example, the load can be introduced from the load element to the surface element and / or the reinforcement element.
  • the load introduction area can be located at a first and / or second end of the load element, and in particular the fastening area of the load element, wherein the Opening can protrude into the load application area or can be adjacent to this. A reduced notch effect can thus be achieved through the rounding.
  • the grip means comprises a flat sealing element which is arranged at the opening in such a way that a loss of bulk material through the opening is prevented, the sealing element with the flat element, in particular circumferentially around the opening, connected is.
  • a point can arise on the sack at which bulk material can escape from the sack, this being prevented by the flat sealing element.
  • crack propagation which can occur in the course of use, especially in the load application area of the grip means, can also cause a leak, especially if the material of the surface element and / or the reinforcement means begins to flow plastically due to a load.
  • the sealing element can prevent or at least delay the loss of bulk material if the material tears, at least within the scope of a tolerance which is essentially determined by the size of the sealing element. Since, for example, when it comes to consumer goods, the bulk material is usually the focus of the end user, preventing the loss of the bulk material improves the quality of the sack, especially in the eyes of the end user, so that this ultimately also affects a possible further purchase of the product. Furthermore, the sealing element can, conversely, also protect the bulk material from environmental influences, in particular from moisture or liquids.
  • the sealing element can preferably be designed as a sealing label, which can preferably be applied to the inside of the surface element and / or the reinforcing means.
  • the connecting section of the sealing means can directly surround the opening or comprise a further area, so that, for example, a second opening is also located within the circumference of the connection.
  • one connecting section of the sealing element can in particular be sufficient to seal a plurality of openings.
  • the grip means can advantageously have an engagement area which can be formed at least partially by the load element, in particular wherein the load element can be gripped under in the engagement area at least substantially parallel to an outside of the surface element.
  • the engagement area can be formed at least partially by the load element, in particular wherein the load element can be gripped under in the engagement area at least substantially parallel to an outside of the surface element.
  • the load element and / or the engagement area is designed without a sealing element.
  • the sealing element on the underside of the load element does not protrude into the engagement area, so that a user does not notice any edge during the transition from the sealing element to the section free of the sealing element when wearing. This can further increase the wearing comfort.
  • the sealing element is not directly loaded, so that only low demands can be made on the sealing element in terms of strength. Contamination of the sealing element can also be reduced, so that it is not visually impaired by the contamination and its strength is also not significantly reduced.
  • the sealing element can advantageously be connected to the reinforcing means and / or the load element, in particular in a materially bonded manner.
  • the sealing element can also preferably be glued or hot-air welded, so that a secure connection is provided with a simple manufacturing option.
  • At least one connecting section of the sealing element can advantageously also be arranged in the engagement area of the load element.
  • the sealing element can thus further support or improve the introduction of loads from the load element into the surface element.
  • the connecting section can also have a rounding and / or in the load application area of the handle means be tangential to the rounding of the opening.
  • a rounding can be understood to mean an outer radius which preferably extends at least partially or completely over the width of the connecting section.
  • Such a rounding can further improve the flow of force and thus the strength, so that the reliability of the grip means when carrying the sack can be further increased.
  • a tangentiality in the load application area is also suitable for improving the flow of forces, so that this too can further increase the strength of the grip means.
  • each component has the same fabric. This enables a particularly simple connection of the components, since the connection can be matched to the properties of an individual material or material type. Furthermore, this can also promote strength, since the fabric as such can preferably have a high strength. Furthermore, the manufacturing costs can also be favored by a material uniformity in that fewer different materials have to be handled.
  • the surface element is a side region of the sack, in particular wherein the surface element has a side fold.
  • the side area can preferably be foldable, so that the sack has only small transport dimensions in the unfilled state and thus many sacks can be stored in a small space.
  • the grip means can be arranged in a hidden manner in the side area of the sack, so that the look of the sack is not impaired by the grip means.
  • the provision of the grip means in the side area makes it possible to conveniently pour the bulk material out of the sack.
  • a second grip means is arranged on a second surface element of a side area of the sack opposite the first side area. This also makes it easy to carry the sack with two hands, alone or, for example, by two people, the load being distributed particularly favorably during carrying, since the center of gravity can in particular be in the middle.
  • the casing has a filling limit, a filling area being provided above the filling limit, at which the bulk material can be poured out of the sack, and the grip means being provided below the filling limit.
  • the filling area can, for example, have a quick-release fastener, a seam or a bond, so that the sack can be easily opened by a user at this point. Thanks to the quick-release fastener, this can even be provided such that it can be closed again.
  • the arrangement of the grip means below the filling limit results in a favorable force distribution when the sack is being carried or when the sack is tipped.
  • a simple tilting of the sack out of the wrist can be sufficient for a pouring process if the grip means is advantageously positioned accordingly.
  • bulging of the surface element when the load-bearing force is introduced is also reduced if the sack can at least partially be stabilized by the bulk material in the vicinity of the gripping means.
  • the gripping means in particular can preferably lie below a center of gravity of the sack, in particular when the sack is filled with the bulk material.
  • the pouring out of the bulk material can be further simplified, at least for the completely filled sack, since the weight of the bulk material generates a moment when the sack is tilted which can support further tilting and thus pouring out.
  • the filling limit can be given by the shape of the sack, so that a specially designated filling limit is not necessary.
  • the outside of the surface element and / or an outside surface of the load element can also be coated in the case of a sack according to the invention.
  • a coating can preferably be understood to mean printing, painting and / or lamination. On the one hand, this can improve the appearance of the sack and, on the other hand, it can improve the strength of the envelope. Protection against environmental influences can also be improved by the coating, it being possible at the same time to reduce the manufacturing costs by means of a simpler printing on the coating.
  • the sack has a display area in order to guide a user to the grip means.
  • the Display area indicate to a user, for example, the position or generally the presence of the grip means.
  • the grip means can be hidden in order to improve the appearance and at the same time can still be easily found by the user.
  • the load element in a sack according to the invention can be designed in such a way that at least essentially a normal force can be introduced into the surface element through the load-bearing force.
  • the fact that essentially a normal force can be introduced into the surface element through the load-bearing force can also be understood in the sense of the present invention to mean that the surface element can be loadable, at least in some areas, partially or essentially in bending.
  • the normal force can preferably be understood as a force which acts at least essentially perpendicular to the flat extension of the surface element.
  • the normal force can preferably also represent a component of a force acting in a different direction, such a component only existing if the force differs from a pure shear force and does not only act in the plane of the flat extension of the surface element.
  • the normal force can also preferably act parallel to the load-bearing force.
  • the normal force can, for example, act in particular as a cutting force within the material, so that the transfer of the load-bearing force can result, for example, in a local bending and / or bending of the surface element.
  • the normal force in the connection area between the surface element and the load element of the grip means can be introduced into the surface element.
  • Such a configuration of the grip means or the load element results in a high strength of the grip means, since the load introduction is well distributed and the stress can thus be kept low. Furthermore, as a result, the connection areas of the components can not be loaded or only slightly loaded by a shear force and thus the requirements for the connection as such can be reduced.
  • a sack in particular a pinch-bottom sack, which can be filled with a bulk material and has a cover with at least one surface element, the cover having a nonwoven material and the surface element having a gripping means which has a load element comprises, on which a load-bearing force for lifting the sack can be applied.
  • the load element is designed such that it is at least in a load state in which the load capacity on Load element acts, protrudes at least in some areas with respect to an outside of the surface element.
  • sack according to the invention comprising a fabric
  • the illustrated exemplary embodiments can also be transferred to a sack comprising a nonwoven material.
  • a sack according to the invention comprising a nonwoven material thus has the same advantages as have been described in detail with reference to a sack according to the invention with a fabric.
  • a nonwoven material can be produced inexpensively and have a uniform surface.
  • the flat material web can be provided, for example, by first weaving a tube, the weaving in particular being an arrangement of plastic strips in a regular, crossing sequence.
  • the tube can then preferably be separated so that the flat material web is created when the tube material is spread out.
  • a continuous strand can be made Fabric are generated, which is in a subsequent production station to the flat sheet of material.
  • the flat material web has at least one surface area on which the grip means is provided.
  • the separation of the surface area according to step c) can preferably take place after the provision of the grip means according to step b) or, for example, before step b), so that the surface areas are first separated and then the grip means is applied to the isolated surface areas.
  • the processing of the envelope section to form an envelope can preferably take place in that the surface areas are folded along the later folded edges of the sack, whereby these can preferably lie diagonally opposite one another.
  • the surface area can furthermore preferably be understood as a section of the material web which forms at least a section of the envelope of the sack during the manufacture of the sack.
  • the material web can preferably have a plurality of surface areas which in particular follow one another. In particular, a high degree of automation can thus be achieved if the material web continuously has further surface areas which are processed at least in accordance with steps b) to d) or a) to d).
  • a method according to the invention thus brings the same advantages as have been described in detail with reference to a sack according to the invention.
  • the method for producing the sack can preferably be automated, since at least method steps a) to d) can be carried out at least essentially by a machine. In this way, a strand of fabric material can preferably be produced, which is moved, for example, at approximately 70 m / min.
  • the method can be cost-effective and a high level of quality can be achieved in terms of accuracy when placing the grip means, when separating the surface area and when processing the surface area into the casing and when producing the fabric.
  • the coating can in particular be a lacquering and / or a lamination.
  • the coating can also be applied at an earlier or later point in time in the process, it being possible, for example, to apply the coating already to the round woven tube or to the, in particular, isolated surface area. This results in protection of the material from environmental influences and increased strength.
  • printing which can represent a further coating, can also be simplified by a first coating so that the dye adheres better to the sack.
  • coating, printing and further coating can also be applied alternately, so that initially a surface that promotes printing is created, this is then printed and then a protective layer is applied over the printing.
  • a load element of the grip means can be produced which is designed in one piece with the surface area.
  • the reinforcement means can protrude beyond the load element, the openings being able to be introduced at the same time, for example through the surface area and the reinforcement means, so that the load element can be configured with the surface area and / or the reinforcement means.
  • This step is also possible in a simple automated process of production, so that a cost-effective production results.
  • the at least one opening can be made by a cutting and / or punching process.
  • a rotating punch can be provided which makes the opening in the surface area at regular intervals, so that simple production is possible, which can be very reliable, in particular due to the low susceptibility to errors.
  • the sack can be automated and / or manufactured in a material-saving manner through simple manufacturing steps. Separation of the at least one surface area can thus be understood to mean, for example, that it takes a different direction from the current flow of material or is processed further in some other way.
  • a pinch-bottom sack or at least an envelope section of an envelope of a pinch-bottom sack can preferably be produced.
  • the sack can be produced from a single surface area only by folding and connecting two edge areas.
  • a single surface area can be combined with further surface areas in order to achieve an envelope of the sack made of several components.
  • a first folding of the surface area can take place before the isolation of the surface area and a second folding of the surface area after the isolation.
  • the sealing element can be applied in such a way that it is arranged over the opening, so that a loss of bulk material through the opening is prevented.
  • the sealing element can on the one hand protect against loss of the bulk material and on the other hand provide protection for the bulk material itself by protecting it from environmental influences by the sealing element.
  • the sealing element can preferably be connected to the surface area, the reinforcing means and / or the load element in such a way that a separating lacquer is first applied to the areas over which the attached sealing element is to extend, and only then is the connection carried out.
  • the connection sections can be designed reliably and with high accuracy. For example, it can be provided that the sealing element does not protrude into an area of engagement of the grip means, so that a user does not feel an edge and thus the comfort when lifting the sack is improved.
  • the process steps can preferably be carried out in the order a) to d). If technically sensible, however, individual steps or all steps can also be repeated, for example to ensure series production. Furthermore, if technically sensible, a different sequence of steps a) to d) is also conceivable. In particular, it can be provided that the surface area or at least one of the Surface areas is formed into a tube before it is separated and then closed to form a sleeve in order to save further costs.
  • Figure 1 shows a sack 1 according to the invention in a first embodiment in a schematic perspective view.
  • the sack 1 shown here is in particular a pinch-bottom sack or a pinch-bottom sack, although other types of sacks are also conceivable.
  • the sack 1 can be filled with a bulk material, a filling limit 6 being provided, up to which the sack 1 can preferably be filled with the bulk material.
  • the filling area can preferably be closed by one or more folds.
  • a filling area 8 is provided above the filling limit 6, from which bulk material can be poured out of the sack 1.
  • the sack 1 has a cover 2, which in turn has a fabric.
  • the envelope 2 of the sack 1 is folded several times, so that several surface elements 3, 3.3 arise.
  • At least one of the surface elements 3 has a grip means 10, which comprises a load element 11 for applying a load-bearing force 4 or for transmitting the load-bearing force 4 to the surface element 3.
  • the load element 11 is designed in such a way that at least in a load state II, in which the load-bearing force 4 acts on the load element 11, it protrudes at least regionally from an outer side 3.2 of the surface element 3.
  • a normal force can be introduced into the surface element 3 at least partially or essentially by the load-bearing force 4.
  • the surface element 3, which has the grip means 10, is in particular a side area 1.1 of the sack 1, the side area 1.1. has a gusset 1.2.
  • the grip means 10 is preferably arranged essentially symmetrically to the gusset 1.2, so that the grip means 10, in particular the load element 11 of the grip means 10, also has the gusset 1.2.
  • the sack 1 can be folded flat in the unfilled state, so that the storage space required for the sack 1 is reduced when the sack 1 is unfilled.
  • the sack 1 has a second grip means 10 on a side of the sack 1 opposite the side area 1.1. Additionally or alternatively, however, the grip means 10 or a further grip means can be provided on each of the further surface areas 3.3.
  • a display area 7 is also provided on the cover 2 of the sack 1, which can give the user, for example, the information that the handle means 10 exists or at which point of the sack 1 the handle means 10 can be found.
  • the grip means 10 can preferably be a grip means of one of the following exemplary embodiments, in particular the Figures 2 to 8 , be.
  • FIG. 2a shows a grip means 10 of a sack 1 according to the invention in a second embodiment.
  • the grip means 10 has a load element 11.
  • an upper first layer 11.4 of the load element 11 is formed in one piece with a surface element 3 of a cover 2 of the sack 1, which is shown here schematically in a section.
  • two openings 13 extend parallel to the load element 11 and have rounded portions 13.2 in a load introduction region 16 of the grip means 10 on the surface element 3.
  • the load element 11 is therefore connected to the surface element 3 at a first and a second end 11.1, 11.2 of the load element 11.
  • the rounded portions 13.2 of the openings 13 have, in particular, a radius which corresponds to half of a width 13.1 of the opening 13, in particular so that the openings 13 can be manufactured particularly easily.
  • the width 13.1 of the openings 13 can preferably be 2 mm to 5 mm.
  • the load element 11 has a reinforcement means 12 which is at least partially connected to the load element 11.
  • the load element 11 and the reinforcing means 12 can be attached, for example, by gluing or by hot air welding, a hotmelt adhesive preferably being used in the case of gluing, so that in particular adhesive residues outside the gluing area are reduced.
  • a flat sealing element 14, in particular a sealing label is provided, which is arranged at the openings 13 in such a way that a loss of bulk material through the openings 13 is prevented.
  • the sealing element 14 is connected circumferentially to the surface element 3 around the openings 13.
  • the grip means 10 is also shown in FIG Figures 2a and 2b in a relief state I.
  • Figure 2b which in particular shows a sectional view of the embodiment of FIG Figure 2a shows that the load element 11 is at least essentially flush with an outside 3.2 and an inside 3.1 of the Surface element 3 closes in the relief state I, so that the outer side 3.2 of the surface element 3 in particular merges steplessly into an outer surface 11.3 of the load element 11.
  • a coating and / or printing can be applied or already applied to the outer side 3.2 and the outer surface 11.3, for example, in a particularly simple manner.
  • Figure 2b shows that the openings 13 are made in the surface element 3 and the reinforcement means 12, so that the load element 11 can move at least in some areas or can detach from the surface element 3.
  • FIG. 3 shows the grip means 10 of the second embodiment of FIG Figures 2a and 2b In a load state II.
  • the load element 11 of the grip means 10 is loaded by a load capacity 4, so that it stands out from the surface element 3 in particular in an arc shape or protrudes at least partially from an outer side 3.2 of the surface element 3.
  • the grip means 10 has the reinforcement means 12 on the load element 11, so that the reinforcement means 12 also lifts off the surface element 3 in the area of the load element 11.
  • this engagement area 15 can initially be generated by slightly lifting the load element 11 so that the user can intervene in the engagement area 15 and comfortably apply the load capacity 4.
  • a normal force 5 can in particular be introduced into the surface element 3 at least partially or essentially, in particular so that the surface element 3 is at least partially subjected to bending.
  • the normal force 5 can preferably be a cutting force, the occurrence of which is expressed by the bending of the surface element 3.
  • Figure 4 shows a partial view of a grip means 10 according to the invention in a further exemplary embodiment with a first end 11.1 of a load element 11, the load element 11 having a reinforcement means 12. Furthermore, a first layer 11.4 of the load element 11 is designed in one piece with a surface element 3, openings 13 being made in the surface element 3 and the openings 13 in one Load introduction region 16 have rounded portions 13.2 at a first end 11.1 of the load element 11 of the grip means 10. In the load introduction region 16, at least part of the load-bearing capacity 4 is furthermore preferably transmitted from the load element 11 to the surface element 3.
  • the reinforcement means 12 is arranged in the center of the load element 11 and connected to the surface element 3, in particular on an inner side 3.1 of the surface element 3, the reinforcement means 12 in the load application area 16 running at least in sections tangential to the fillet 13.2 of the opening 13.
  • the connecting section 12.1 of the reinforcement means 12, which connects the reinforcement means 12 to the surface element 3, is also rounded, so that here too the flow of force from the load element 11 into the surface element 3 is favored, so that as few sharp edges as possible arise and thus a Strength of the bag 1 is increased against crack propagation.
  • FIG. 5a shows a gripping means 10 according to the invention of a sack 1 in a further exemplary embodiment in a schematic perspective view.
  • the grip means 10 is arranged on an outside 3.2 of a surface element 3 and provided in one piece with a reinforcement means 12.
  • openings 13 in the form of incisions are made in the reinforcement means 12, so that a load element 11 can be moved at least in sections essentially independently of the surface element 3. Since the load element 11 has, in particular, the same length as the openings 13, the movability of the load element 11 and / or the surface element 3 is designed to be flexible, so that the load element 11 can be slightly deformed at least in the area of the gripping means 10 to allow the load element 11 Allow mobility.
  • At least one engagement area 15 is created at the openings 13, which ensures that the load element 11 can be grasped from under by a user, so that a load capacity 4 can be introduced into the load element 11 from below.
  • a connecting section 12.1 of the reinforcement means 12 is also provided circumferentially around the load element 11 (shown here in dotted lines), so that a high level of stability of the grip means 10 is ensured.
  • Figure 5b for example the embodiment of the grip means 10 of FIG Figure 5a in a load state II, the engagement area 15 being formed under the action of a load-bearing force 4.
  • the load element 11 in the load state II and in a relief state I can be designed similarly or even identically.
  • the load capacity 4 can in particular at least partially or essentially allow a normal force 5 to be introduced into the surface element 3, preferably so that the surface element 3 is at least partially subjected to bending.
  • Figure 6 shows a gripping means 10 according to the invention of a sack 1 in a further embodiment in a top view from the inside of the sack 1.
  • a load element 11 of the gripping means 10 is formed in that openings 13 are made in a surface element 3 of the sack 1, so that at least one first layer 11.4 of the load element 11 is formed in one piece with the surface element 3.
  • the grip means 10 also has a reinforcement means 12 which is arranged in the center of the load element 11, so that the strength of the grip means 10 is improved.
  • the reinforcement means 12 is furthermore connected to the surface element 3, in particular in a materially bonded manner, by two connecting sections 12.1 of the reinforcement means 12.
  • a flat sealing element 14 is arranged on the inside 3.1 of the surface element 3, which is connected circumferentially around the openings 13 to the surface element 3 and partially to the reinforcing means 12, so that a loss of bulk material through the openings 13 is prevented.
  • the openings 13 in load application areas 16 of the grip means 10 have rounded portions 13.2 in order to counteract the formation of cracks.
  • connection section 14.1 of the sealing element 14 is also at least partially tangential to the openings 13 and their fillets 13.2, the connection section 14.1 (shown here with circles) of the sealing element 14 at least partially in an engagement area at least in the load state II, in particular of the grip means 10 15 of the load element 11 protrudes and is also rounded in the engagement area 15. As a result, the sealing element 14 can also support the strength of the grip means 10.
  • FIG. 7a shows a gripping means 10 according to the invention of a sack 1 on an outside 3.2 of a surface element 3 in a schematic perspective view.
  • a load element 11 of the grip means 10 is designed in one piece with a reinforcement means 12, the reinforcement means 12 being connected to the outside 3.2 of the surface element 3 in at least one connection section 12.1, preferably two connection sections 12.1, of the reinforcement means 12.
  • the connecting sections 12.1 are formed at a first and a second end 11.1, 11.2 of the load element 11
  • the load element 11 is at least partially spaced from the surface element 3 in the engagement region 15, since the length of the load element 11 is independent of the surface element 3.
  • the reinforcing means 12 can be materially connected to the surface element 3 in a connecting section 12.1 of the reinforcing means 12, the reinforcing means 12 preferably being glued and / or welded to the surface element 3.
  • Figure 7b shows the embodiment of the grip means 10 of FIG Figure 7a in a side view, it becoming clear that a connecting section 12.1 of the reinforcing means 12 is provided on the outside 3.2 of the surface element 3, so that an engagement area 15 can be shaped by the load element 11.
  • the connecting section 12.1 of the reinforcement means 12 also represents a load introduction region 16 of the grip means 10.
  • FIG 8 shows a further embodiment of a grip means 10 according to the invention in a schematic sectional view.
  • the grip means 10 has a load element 11 which is designed in one piece with a reinforcement means 12.
  • the reinforcement means 12 is also connected to the surface element 3 on an inner side 3.1 of a surface element 3 of the sack 1, the load element 11 or the reinforcement means 12 preferably being materially connected to the surface element 3 in a connection section 12.1 of the reinforcement means 12.
  • the grip means 10 is also in a load state II, so that it protrudes at least partially over an outer side 3.2 of the surface element 3 and an engagement area 15 is formed in which a user can intervene.
  • the load element 11 is also arranged in an opening 13 of the planar element 3, the opening 13 being provided by a planar sealing element 14 is closed, so that bulk material, which preferably rests against the inside 3.1 of the surface element 3 when the sack is filled, cannot emerge from the opening 13.
  • the connecting section 12.1 of the reinforcement means 12 also represents a load application area 16 in which the surface element 3 is at least partially loaded in bending, in particular by the action of a normal force 5, when a load-bearing force 4 is applied in the load state II shown.
  • Figure 9 shows method steps according to the invention for producing a sack 1 in a further exemplary embodiment.
  • a flat material web 200 is provided, which has a fabric and comprises at least one surface area 201.
  • the material web 200 can be provided, for example, from a round woven tube, the round woven tube preferably being cut open after the weaving.
  • the flat material web 200 also has a plurality of surface areas 201 and moves along a transport direction 200.1 so that successive method steps can be carried out for the surface areas 201.
  • a gripping means 10 is provided on the surface area 201 that, when the finished sack 1 is used later, a load capacity 4 can be applied to a load element 11 of the gripping means 10 and the load element 11 is designed in such a way that it at least in a load state II, in which the load capacity 4 acts on the load element 11, protrudes at least in areas from the outside 3.2 of the surface element 3.
  • the surface area 201 can form the surface element 3 at least partially or completely.
  • openings 13 with fillets 13.2 are preferably first made parallel to one another in the surface area 201, so that a first layer 11.4 of the load element 11 is created.
  • a reinforcement means 12 in particular in the form of a reinforcement label, is preferably introduced and in particular connected to the surface area 201 centrally between the openings 13, so that the load element 11 thickens and thus reinforces this area of the reinforcement means 12 is, so that a higher strength of the grip means 10 can be achieved.
  • the reinforcement means 12 it is conceivable here for the reinforcement means 12 to be arranged on the surface area 201 before the openings 13 are made.
  • the reinforcement means 12 can also be made wider, for example, so that the openings 13 are introduced into the reinforcement means 12 and the surface area 201 at the same time.
  • a flat sealing element 14 is preferably applied centrally over the load element 11, which is arranged at the openings 13 in such a way that a loss of bulk material through the openings 13 is prevented, the sealing element 14 being connected to the surface area 201 in particular .
  • At least one surface area 201 is then separated from the material web 200, so that the surface area 201 is isolated.
  • the separation of the surface area 201 can in particular alternatively also take place directly after the provision of the material web or one of the intermediate steps when the grip means 10 is applied, in order to be able to handle the surface area individually.
  • the surface area 201 is also processed into a shell, the surface area 201 being able to be folded and / or connected to further surface areas 201 to form the shell 2.
  • a first edge area 201.1 of the surface area 201 can be connected to a second edge area 201.2 of the surface area 201 so that a circumferentially closed envelope results, with further folds being able to be made in a bottom area, for example.
  • the edge areas 201.1, 201.2 can preferably be connected to form a tube before the surface area 201 is separated, so that after the separation, only the front and / or rear area oriented relative to the transport direction 200.1 is closed in order to form the casing 2.
  • Figure 10 shows method steps according to the invention for producing a sack 1 in a further exemplary embodiment.
  • a flat material web 200 is provided, which has a fabric and comprises at least one surface area 201.
  • the material web 200 is also shown purely schematically with further components such as the surface area 201, which in particular represents a section of the material web 200 and can later form an envelope section of the finished sack, in particular from a later outer side 3.2 of a surface element 3, so that in particular the Dimensions, such as the width of the material web 200, do not represent the actual dimensions.
  • the material web 200 can be provided, for example, from a round woven tube, which is preferably cut open after weaving.
  • the flat material web 200 furthermore has a plurality of surface areas 201 and moves along a transport direction 200.1 so that successive method steps can be carried out for each of the surface areas 201.
  • a gripping means 10 is provided on the surface area 201 that, when the finished sack 1 is used later, a load capacity 4 can be applied to a load element 11 of the gripping means 10 and the load element 11 is designed in such a way that it at least in a load state II, in which the load capacity 4 acts on the load element 11, protrudes at least in areas from the outside 3.2 of the surface element 3.
  • the surface area 201 can form the surface element 3 at least partially or completely.
  • a reinforcing means 12 in particular in the form of a reinforcement slip, is preferably applied to at least one of the surface areas 201, so that the load element 11 is formed and connected to the surface area 201 in two connection areas 12.1. At least one surface area 201 is then separated from the material web 200, so that the surface area 201 is isolated.
  • the surface area 201 can in particular alternatively also be separated directly after the material web has been provided or one of the intermediate steps when the grip means 10 is applied, in order to be able to handle the surface area individually.
  • the surface area 201 is also processed into a shell, the surface area 201 being able to be folded and / or connected to further surface areas 201 to form the shell 2.
  • a first edge area 201.1 of the surface area 201 can be connected to a second edge area 201.2 of the surface area 201 so that a circumferentially closed envelope results, with further folds being able to be made in a bottom area, for example.
  • a plurality of surface areas 201 are connected to one another or further envelope sections are added around the To shape shell.
  • the method steps shown can be used to produce a sack in accordance with the first exemplary embodiment, the handle means in accordance with one of the exemplary embodiments in FIG Figures 5 or 7th is trained.
  • a tube is formed before the surface area 201 is separated and the tube is at least partially closed after the separation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Bag Frames (AREA)

Claims (20)

  1. Sac (1), plus particulièrement sac à fond pincé, qui peut être rempli avec un produit en vrac, comprenant un manchon (2) avec au moins un élément de surface (3),
    dans lequel le manchon (2) comprend un tissu et l'élément de surface (3) comprend un moyen de préhension (10), qui comprend un élément de charge (11) au niveau duquel une force portante (4) peut être appliquée pour soulever le sac (1),
    dans lequel l'élément de charge (11) est conçu de façon à ce que, au moins dans un état de charge (II), dans lequel la force portante (4) agit sur l'élément de charge (11), il se soulève par rapport à une face externe (3.2) de l'élément de surface (3) au moins à certains endroits,
    dans lequel l'élément de charge (11) comprend des moyens de renforcement (12),
    caractérisé en ce que
    l'élément de surface (3), l'élément de charge (11) et le moyen de renforcement (12) sont constitués d'un matériau identique, chacun des composants comprenant le même tissu.
  2. Sac (1) selon la revendication 1,
    caractérisé en ce que
    le moyen de préhension (10) peut être amené dans un état de décharge (I) et dans l'état de charge (II), dans lequel l'élément de charge (11) se termine, dans l'état de décharge (I), au moins globalement en affleurement avec une face interne (3.1) et/ou la face externe (3.2) de l'élément de surface (3).
  3. Sac (1) selon la revendication 1 ou 2,
    caractérisé en ce que
    le moyen de renforcement (12) est disposé de préférence au centre de l'élément de charge (11) ou en ce que le moyen de renforcement (12) est fixé à l'élément de surface (3) et/ou à l'élément de charge (11), plus particulièrement dans lequel le moyen de renforcement (12) est soudé avec l'élément de surface (3) et/ou l'élément de charge (11).
  4. Sac (1) selon la revendication 3,
    caractérisé en ce que
    le moyen de renforcement (12) est réalisé d'une seule pièce avec l'élément de charge (11).
  5. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyen de préhension (10) comprend, dans l'élément de surface (3) et/ou dans le moyen de renforcement (12), au moins une ouverture (13) de façon à ce que l'élément de charge (11) soit mobile, plus particulièrement à ce que l'ouverture (13) soit un évidement qui présente de préférence une largeur (13.1) de 2 mm à 5 mm.
  6. Sac (1) selon la revendication 5,
    caractérisé en ce que
    l'ouverture (13) présente, parallèlement à l'élément de charge (11), une longueur supérieure à 90 mm, de préférence de 100 mm à 180 mm.
  7. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    au moins une première couche (11.4) de l'élément de charge (11) est réalisée d'une seule pièce avec l'élément de surface (3) et/ou en ce que l'ouverture (13) présente un arrondi (13.2) dans une zone d'application de la charge (15) du moyen de préhension (10).
  8. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyen de préhension (10) comprend un élément d'étanchéité plat (14), qui est disposé au niveau de l'ouverture (13) de façon à empêcher une perte de produit en vrac à travers l'ouverture (13), dans lequel l'élément d'étanchéité (14) est relié avec l'élément de surface (3), plus particulièrement de manière circulaire autour de l'ouverture (13).
  9. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyen de préhension (10) comprend une zone de prise (15) qui peut être constituée au moins partiellement de l'élément de charge (11), plus particulièrement dans lequel l'élément de charge (11) peut être pris par en dessous dans la zone de prise (15) de manière au moins globalement parallèle à la face externe (3.2) de l'élément de surface (3).
  10. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de charge (11) et/ou la zone de prise (15) est conçue sans élément d'étanchéité et/ou en ce que l'élément d'étanchéité (14) est relié avec le moyen de renforcement (12) et/ou l'élément de charge (11), plus particulièrement par liaison de matière.
  11. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    au moins une portion de liaison (14.1) de l'élément d'étanchéité (14) est disposée dans la zone de prise (15) de l'élément de charge (11).
  12. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de surface (3), l'élément de charge (11), le moyen de renforcement (12) et/ou l'élément d'étanchéité (14) sont constitués du même matériau et/ou en ce que l'élément de surface (3) est une partie latérale (1.1) du sac (1), plus particulièrement dans lequel l'élément de surface (3) comprend un pli latéral (1.2).
  13. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le manchon (2) présente une limite de remplissage (6), dans lequel, au-dessus de la limite de remplissage (6), est prévue une zone de remplissage (8) au niveau de laquelle le produit en vrac peut être versé hors du sac (1) et le moyen de préhension (10) est disposé en dessous de la limite de remplissage (6).
  14. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    la face externe (3.2) de l'élément de surface (3) et/ou une face externe (11.3) de l'élément de charge (11) est revêtu et/ou en ce que le sac (1) présente une zone d'affichage (7) afin de guider un utilisateur vers le moyen de préhension (10).
  15. Sac (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de charge (11) est conçu de façon à ce que, grâce à la force portante (4), au moins globalement une force normale (5) peut être appliquée à l'élément de surface (3).
  16. Procédé de fabrication d'un sac (1) selon l'une des revendications 1 à 15, qui peut être rempli d'un produit en vrac,
    dans lequel au moins les étapes suivantes sont exécutées :
    a) préparation d'une bande de matériau plate (200) comprenant un tissu avec au moins une zone de surface (201),
    b) préparation d'un moyen de préhension (10) sur la zone de surface (201), tel que, dans le cas d'une utilisation ultérieure du sac (1) fini, une force portante (4) peut être appliquée à un élément de charge (11) du moyen de préhension (10) et l'élément de charge (11) est conçu de façon à ce que, dans un état de charge (II), dans lequel la force portante (4) agit sur l'élément de charge (11), il se soulève au moins à certains endroits d'une face externe (3.2) d'un élément de surface (3),
    c) séparation de la zone de surface (201) de la bande de matériau (200),
    d) traitement de l'au moins une zone de surface (201) afin d'obtenir un manchon (2) du sac (1).
  17. Procédé selon la revendication 16,
    caractérisé en ce que
    l'étape a) comprend au moins l'étape partielle suivante :
    application d'un revêtement sur la bande de matériau (200), de façon à ce que la face externe (3.2) de l'élément de surface (3) du sac (1) soit revêtue, et/ou
    en ce que l'étape b) comprend au moins l'étape partielle suivante :
    application d'un moyen de renforcement (12) sur la zone de surface (201).
  18. Procédé selon l'une des revendications 16 ou 17,
    caractérisé en ce que
    l'étape b) comprend au moins l'étape partielle suivante :
    réalisation d'au moins une ouverture (13) dans la zone de surface (201) et/ou dans le moyen de renforcement (12).
  19. Procédé selon l'une des revendications 16 - 18,
    caractérisé en ce que
    le traitement de l'au moins une zone de surface (201) afin d'obtenir un manchon (2) comprend au moins une des étapes suivantes :
    - séparation de l'au moins une zone de surface (201),
    - pliage, de préférence répété, de la zone de surface (201),
    - jointoiement d'au moins une zone de bord (201.1) de la zone de surface (201) avec une deuxième zone de bord (201.2) de la zone de surface (201) ou d'une autre zone de surface.
  20. Procédé selon l'une des revendications 16 - 19,
    caractérisé en ce que
    l'étape b) comprend au moins l'étape partielle suivante :
    - application d'un élément d'étanchéité plat (14) sur la zone de surface (201), dans lequel l'élément d'étanchéité (14) est relié avec la zone de surface (200), le moyen de préhension (12) et/ou l'élément de charge (11).
EP17170571.8A 2016-06-16 2017-05-11 Sac et son procédé de fabrication Active EP3257776B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016111030 2016-06-16
DE102016119113.2A DE102016119113A1 (de) 2016-06-16 2016-10-07 Sack, sowie Verfahren zur Herstellung eines Sackes

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EP3257776A1 EP3257776A1 (fr) 2017-12-20
EP3257776B1 true EP3257776B1 (fr) 2021-09-01

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055777B4 (de) * 2010-12-23 2012-11-22 Mondi Ag Sack
US9533463B2 (en) * 2013-08-18 2017-01-03 Mondi Jackson, Inc Film bag
IN2014DE01641A (fr) * 2014-06-18 2015-07-17 Ashok Chaturvedi
HUE034309T2 (en) * 2014-09-16 2018-02-28 Mondi Ag Side suction bag and a method for producing a sided pouch

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