EP2507048A2 - Ensacheuse pour sacs "pinch" en tissu, sac "pinch" et son procédé de fabrication - Google Patents

Ensacheuse pour sacs "pinch" en tissu, sac "pinch" et son procédé de fabrication

Info

Publication number
EP2507048A2
EP2507048A2 EP10795215A EP10795215A EP2507048A2 EP 2507048 A2 EP2507048 A2 EP 2507048A2 EP 10795215 A EP10795215 A EP 10795215A EP 10795215 A EP10795215 A EP 10795215A EP 2507048 A2 EP2507048 A2 EP 2507048A2
Authority
EP
European Patent Office
Prior art keywords
station
guide element
hose
pinch
transport
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10795215A
Other languages
German (de)
English (en)
Inventor
Uwe Köhn
Andreas Staat
Roger Bannister
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
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Priority to EP13152379.7A priority Critical patent/EP2599617B1/fr
Publication of EP2507048A2 publication Critical patent/EP2507048A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81465—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed behind the other in a single row in the feed direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/36—Folding sheets, blanks or webs by continuously feeding them to stationary members, e.g. plates, ploughs or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/644—Making seals parallel to the direction of movement, i.e. longitudinal sealing

Definitions

  • the invention relates to a Pinch sack, a method for producing a Pinch sack, a station for the formation of Pinchböden and a device for the production of Pinch convincedsburgen.
  • the above-mentioned objects are defined in the preambles of claims 1, 5, 8 and 14.
  • Pinch sacks are known. Like all common sacks they have a bag body which consists essentially of a hose body or is such. The Pinchsburge have at least one Pinchböden, which closes one end of the bag body. He comes about by one end of the hose piece is usually folded along a fold line and fixed to the bag wall. Pinch sacks made of paper are known in the prior art. They can be produced simply by hand or by automatically closing the hose piece ends. As a rule, adhesive is used to fix or fix the folded tube end to a bag wall.
  • the object of the present invention is therefore to propose a bag which is made of durable, but well-printed material and yet has a low moldable bottom.
  • the object is achieved in that the at least one pinch floors of the bag is determined by a heat-induced joining process.
  • heat-induced joining processes which also have their advantages - include sealing or welding processes. This is when sealing or thermal sealing a connection is made without the plastic material to be joined is liquefied to melt. When welding a part of the plastic material is temporarily transferred to melt. The quick fixation of the soil is made even easier if the pinch fold is covered with a ground cover sheet.
  • stretched material has high strengths that allow it to use thinner material.
  • film composites or laminates are usable in this context, the polyolefin material, which has good stretching properties, contain. Special strength materials of stretched woven fabric.
  • a material composition which can be used very advantageously contains stretched fabric onto which a good printable film has been glued or laminated with the aid of an extrudate.
  • the piece of tubing is guided at least during part of the production transversely to its longitudinal axis by the bag production device and in particular by the station for the formation of Pinchböden.
  • this will be done with a transport system that includes, among other things, transport belt.
  • the hose piece is guided at bottom formation at least one end by a guide element.
  • This guide element should be shaped to add one end of the bag.
  • the piece of tubing can advantageously be heated.
  • the guide element is made of metal, it can be heated and in this way impart to the hose piece at least part of the heat energy needed for the joining process.
  • the heating with hot air is advantageous during the laying of the sack end.
  • the hot air can be blown into the U-shaped curvature of the bag material which forms when put on, and in this way heat those parts of the bag material surface which are to adhere to each other.
  • the bag material can be performed in this double wall.
  • the guide element can taper in the transport direction of the bags, so that the bag wall is folded.
  • a device which performs several steps for the production of sacks called apparatus for the production of Pinchsburgen.
  • Such a device has several processing stations in which work steps are performed.
  • Such devices are often called Bodenleger, as the laying of the ground as a decisive step applies.
  • the pinch bottom forming station is that workstation which immediately forms the pinch bottoms.
  • Such a workstation may include its own transport device for hose pieces. As a rule, however, such a station will be penetrated by a transport device which is assigned to a plurality of processing stations.
  • Fig. 1 is a plan view of a schematic representation of an apparatus for
  • Fig. 2 is a sketch of elements of a bottoming station
  • Fig. 3 is a sketch of elements of a bottom forming station and a
  • FIG. 4 shows another sketch of elements of a bottom forming station and a pressing station
  • Fig. 5 is a schematic plan view of a bottom forming station
  • Fig. 6 is a schematic plan view of another
  • Fig. 7 shows a longitudinal section through a bag
  • Fig. 8 is a plan view of a schematic representation of another
  • Fig. 11 A view of a bag from its front
  • Fig. 12 shows a section through preferred bag material
  • Fig. 1 shows a plan view of a schematic representation of a device 17 for the production of sacks 18.
  • the device 17 is shown very schematically, and often symbols represent the function of the respective In the manufacturing process, the device 17 for producing sacks 18 starts from a material web 3 which is unwound from a web winding 2 in an unwinding station 1.
  • the web wrap 2 is, like many other symbols, shown rotated by 90 ° for illustrative reasons. Subsequently, the web 3 passes through a preference 5 in a preferred station 4. Also, the preferred symbol 5 is shown rotated by 90 °.
  • the web 3 passes into a perforation station 8 in which cuts are made along the perforation line 9 into the web with lasers 6 emitting beams 7. It should therefore be noted that the perforation takes place before the tube formation and that it is carried out here by means of lasers 6. It should also be pointed out that the perforation line 9 is not a straight line here. More on that later.
  • the now perforated web 3 enters the tube forming station 10. Based on the symbols 12 is shown how the tube cross section is formed. Of course, these symbols represent the cross-section rotated again by 90 °. It should be noted that the formation of a tube 15 from a flat sheet 3 is performed by the web is passed over a series of sheets and rollers, wherein lateral portions of the web 3 turned over become.
  • a region of overlapping material 14 is formed.
  • gussets 11 are also inserted into the tube 15 during tube formation, ie gusseted sacks 18 are produced.
  • a longitudinal adhesion 21 in the longitudinal adhesive station 16 is made in the overlapping material region 14. This process is represented by an extruder symbol 22.
  • the use of a polyolefinic melt is advantageous.
  • the longitudinal seam can also come about through a seal or weld.
  • the tubular web 15 enters a tear-off station 23, in which the web is subjected to longitudinal forces, so that the tubular web 15 is separated into pieces of tubing 24.
  • the tearing process is symbolized by the arrows 25.
  • the use of double belt conveyors for tearing off the hose pieces is advantageous.
  • the pieces of hose in the transport direction z are conveyed into the turning and deflecting station 26, in which the hose pieces 24 are rotated, which is effected inter alia by the turntable 27. After the rotation, a deflection can take place.
  • the rotated tube pieces 24 can be deflected along a path (eg curve), which is indicated by the symbol 28. It is advantageous if a rotation of at least 90 ° takes place.
  • the longitudinal axes of the hose pieces are now aligned transversely to its transport direction z.
  • the tube pieces 24 are aligned along two tube piece edges (once transverse to the transport direction z and once parallel thereto).
  • the symbols 30 and 31 illustrate this.
  • one end of the tube piece 24 is heated (symbol 33) and then the fold of the respective end of the tube piece is made on the tube wall (symbol 34).
  • the bottom 62 thus formed is fixed in a pressing station 35. This often happens in nips between press rolls (symbol 38).
  • the finished bags 8 are stacked in a storage station 37 (symbol 36). This is advantageously done so that the bottoms of the bags 18 are superimposed.
  • FIGS. 2 to 10 sketch parts of exemplary embodiments of a bottom forming station and of subsequent press rollers 38.
  • FIG. 2 shows a guide element 39, which has a U-shaped, configured cross-section.
  • the guide member 39 is double-walled and can lead between its double wall 45, 46 bag material.
  • the nozzle 43 of a hot air tube 42 by a rotational movement are pivoted about the axis 44.
  • FIG. 5 shows how a piece of tubing 24 is transported in the direction of the guide element.
  • the tube piece is transported via the conveyor table 40, the conveyor belts 49 transmitting the force required for this purpose.
  • the end 50 of the tube piece slides into the area between the walls 45 and 46 of the guide element.
  • the end 50 of the tube piece 24 is transferred to the front wall 53.
  • the bag material is heated by the hot air in the region of the fold.
  • the inner wall 46 of the guide member 39 may be heated and or it may be provided with recesses for allowing the heated air to reach the tubing.
  • the inner wall 46 in the transport direction z end before the outer wall ends ( Figure 10).
  • One or both walls of the hose piece can run in the transport direction z funnel-shaped.
  • the distance 52 between the outer walls 45 of the guide member 39 in the transport direction z becomes smaller.
  • the line 47 is the furthest from the tube center 56 area in which the guide member 39 (with its outer wall 45) leads Sackmaterial. It is advantageous if this line 47 is inclined against the transport direction z (transport direction represented by dotted line 51, inclination generously represented by angle a). Of advantage is often to tilt the entire guide member 39, as seen in Figure 6.
  • FIG. 6 the illustration of the hot air tube 42 has been dispensed with.
  • FIG. 7 shows again a section through a Pinchsack 18, in which the end 50 of the tube piece 24 is beaten on the front wall 53 of the bag 18.
  • the folding thus takes place at an angle of about 180 ° and here forms a fold line to the longitudinal axis of the hose piece a 90 ° angle.
  • the turned-over front wall 53 is shorter than the turned-around rear wall 54, which can be achieved by an odd perforation cut 9 (FIG. 1).
  • FIG. 11 illustrates once again the same objects as FIG. 7 on the basis of a view of a bag 18 from its front side (front wall 53).
  • the bag center 56 and the hose piece axis 57 are also explained here.
  • Figure 9 shows, as mentioned, the U-shaped cross section of the guide element in more detail and illustrates, inter alia, the importance of the distance 52 between the outer walls 45 of the guide member and the meaning of the guide line 47.
  • Such a cross section can be seen when looking at the guide element 39 in Figure 5 intersects, looks out of the outlined by the arrows 65 line of sight and reduces the view of the features of the guide member 39.
  • Figure 10 shows the section AA through the guide member 39, in the interior 41 of the nozzle 43 blows hot air.
  • Figure 8 shows an alternative apparatus for making bags 18 consisting of two device components 60 and 63.
  • the device component 63 is a hose-forming device 63, whose first five workstations 1, 4, 8, 10 and 16 correspond in function to the identically numbered workstations of the device 17 from FIG.
  • the formed tube 15 is wound after the longitudinal gluing station 16 in the winding station 64 to a hose coil 59. This can - as shown by the arrows 61 and the winding 59 (dashed lines) - to the unwinding station 1 of the further bottoming device 60 - are transported.
  • tubular web 15 is unwound and enters the tear-off station 23, where it is separated again into pieces of tubing 24 (arrows 25). Instead of tearing off the pieces of tubing, other separation principles such as transverse cutting come into question.
  • the further transport of the tube pieces 24 takes place in the transport direction z, which lies transversely to the unwinding direction of the tubular web 15.
  • This is followed by transport and processing by the stations 29, 32, 35 and Figure 37, which in turn have the same functions as the like numbered stations of the apparatus 17.
  • Figure 12 shows a section through preferred sack material 66 (preferably stretched polyolefin fabric), extrudate 67, and printable film 68. Typically, these layers are bonded together and not spaced. Intermediate layers - also of paper - can however occur.
  • FIG. 12 once again shows the inner wall 46 of the guide element 39 shown in FIG. 9 in a plan view.
  • the outer wall 45 only the lateral guide line 47 and the end line 69 are shown in order not to obstruct the view of the inner wall 46.
  • the inner wall 46 has a nose 70, that is, its distance from the outer wall and thus also to the lateral guide line decreases or it is inclined to it. This has proven to be advantageous.
  • the hot air nozzle blows air largely orthogonal to the conveying direction of the semi-finished sacks z into the interior 41 of the guide element 39 (in the x direction). This advantageously takes place shortly before or shortly after the end of the inner wall in the z-direction.
  • the area in which the inner wall 46 has just ended and the outer wall is still present is advantageous here.
  • "Shortly before or shortly after” is in this context less than 5 cm, but advantageously less than 3 cm, and the distance between the guide line 47 The advantage of this is that it can be set to less than 3 cm Even greater advantages can be achieved with an adjustability of this distance to 15 to 5 mm and if after adjustment of the above Distances sacks are made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Making Paper Articles (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Prostheses (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un sac "Pinch" (18) qui est au moins en partie composé de matière plastique (3), comprend un corps de sac constitué sensiblement d'une pièce tubulaire (24) et comprend au moins un fond "Pinch" (55) à une extrémité de la pièce tubulaire (24). Au moins une partie de la matière plastique (3) est étirée et ledit au moins un fond "Pinch" (55) est fixé par un processus d'assemblage induit par la chaleur.
EP10795215A 2009-11-30 2010-11-30 Ensacheuse pour sacs "pinch" en tissu, sac "pinch" et son procédé de fabrication Withdrawn EP2507048A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13152379.7A EP2599617B1 (fr) 2009-11-30 2010-11-30 Procédé et dispositif de fabrication d'une ensacheuse de type Pinch

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DE102009056078A DE102009056078B8 (de) 2009-11-30 2009-11-30 Verfahren und Vorrichtung zur Herstellung von Pinchsäcken sowie Station zur Bildung von Pinchböden
PCT/EP2010/007242 WO2011072801A2 (fr) 2009-11-30 2010-11-30 Ensacheuse pour sacs "pinch" en tissu, sac "pinch" et son procédé de fabrication

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EP2507048A2 true EP2507048A2 (fr) 2012-10-10

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EP10795215A Withdrawn EP2507048A2 (fr) 2009-11-30 2010-11-30 Ensacheuse pour sacs "pinch" en tissu, sac "pinch" et son procédé de fabrication
EP13152379.7A Active EP2599617B1 (fr) 2009-11-30 2010-11-30 Procédé et dispositif de fabrication d'une ensacheuse de type Pinch

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US (1) US10703051B2 (fr)
EP (2) EP2507048A2 (fr)
DE (1) DE102009056078B8 (fr)
HU (1) HUE033663T2 (fr)
WO (1) WO2011072801A2 (fr)

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US9845184B2 (en) 2012-02-13 2017-12-19 Polytex Fibers Corporation Easy open plastic bags
US11459157B2 (en) 2012-02-13 2022-10-04 Polytex Fibers Llc Woven plastic bags with features that reduce leakage, breakage and infestations
US10661963B2 (en) 2014-04-04 2020-05-26 Polytex Fibers Corporation Peelable easy open plastic bags
US9969529B2 (en) 2012-02-13 2018-05-15 Polytex Fibers Corporation Easy open plastic bags
US9669981B2 (en) 2012-02-13 2017-06-06 Polytex Fibers Corporation Easy open plastic bags
US10562689B2 (en) 2012-02-13 2020-02-18 Polytex Fibers Corporation Woven plastic bags with features that reduce leakage, breakage and infestations
DE102012101932A1 (de) 2012-03-07 2013-09-12 Nordenia Deutschland Halle Gmbh Seitenfaltenbeutel aus einem Kunststoffgewebeverbund sowie Verfahren zu seiner Herstellung
WO2014059283A1 (fr) 2012-10-12 2014-04-17 Polytex Fibers Corporation Sac polymère à éléments d' accès facile reliés au sac sans adhésifs
US9663284B2 (en) 2012-11-20 2017-05-30 Polytex Fibers Corporation Methods of sealing plastic bags and plastic bags made by the methods
EP3434617B1 (fr) 2013-01-22 2021-03-24 Polytex Fibers Corporation Sac en plastique tissé à accès facile
US9358748B2 (en) 2013-04-15 2016-06-07 Miller Weldmaster Corporation Back seam welder and method of operation
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Also Published As

Publication number Publication date
DE102009056078A1 (de) 2011-06-01
WO2011072801A2 (fr) 2011-06-23
EP2599617A3 (fr) 2013-10-30
WO2011072801A3 (fr) 2011-09-29
US10703051B2 (en) 2020-07-07
HUE033663T2 (hu) 2017-12-28
US20130016926A1 (en) 2013-01-17
DE102009056078B4 (de) 2012-03-22
DE102009056078B8 (de) 2012-06-14
EP2599617B1 (fr) 2017-06-28
EP2599617A2 (fr) 2013-06-05

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