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
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
  • B65D75/20—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B7/00—Closing containers or receptacles after filling
  • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
  • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
  • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
  • B65B9/2056—Machines for packages of special type or form
  • B65B9/2063—The webs being spirally wound around the filling nozzle
• • 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
  • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
  • B65D3/02—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape
  • B65D3/06—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape essentially conical or frusto-conical
• • 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
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
  • B65D75/42—Chains of interconnected packages
• • 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
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
  • B65D75/44—Individual packages cut from webs or tubes
  • B65D75/46—Individual packages cut from webs or tubes containing articles
• • 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
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/52—Details
  • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
  • B65D75/5816—Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion
• • 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
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/52—Details
  • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
  • B65D75/66—Inserted or applied tearing-strings or like flexible elements
  • B65D75/68—Inserted or applied tearing-strings or like flexible elements extending through wrapper closure or between wrapper layers

Definitions

• the present invention concerns a flexible, triangular sachet that can be opened into like open shape and to a method of manufacturing such a sachet.
• a sachet Flexible packaging prefilled with a smaller amount of an eatable product is often referred to as a sachet. It comes in different shapes, but an often used one is as a rectangular bag which has the advantage of easy storage in a flat condition, but which on the other hand is not particularly well suited for easy holding by one hand and possibly sharing with others.
• conical packaging which is used in a number of variations.
• the conical shape of the wrapping or packaging is often used for eatable products that are eaten directly from the packaging while carrying it along, such as sweets, nuts, chips or freshly baked cakes, e.g. sold at market places.
• the packaging is typically delivered to the shop or boot as cone shaped, or it is made by rolling a piece of paper into a cone shape. In both cases it may be filled with the product as a part of the sales process.
• the cone shape is thus used partly to give the product a freshly-made look and partly due to the easy-to-carry-along characteristics of that shape. The latter is also a reason for delivering pre-packed products in that shape of packaging.
• the packaging has a shape from the beginning which cannot easily be transported in a flat condition without damaging it - especially if it is make from cardboard or another relatively stiff plastic or laminate material.
• a cone-shaped packaging is e.g. known from sweets where the bag is typically closed by a piece of tape which makes them hard to open.
• front layer and the rear layer are joined by sealing located along two edges of the sachet to define the interior space, characterized in that a tear strip is arranged between the front layer and the rear layer of the sachet in proximity to and runs at least partially along the sealing at one of the two edges joined by sealing.
• the shape of the sachet and the arrangement of the tear strip advantageously provide that the sachet obtains a cone-like shape after opening.
• This cone like shape makes it easy both to hold by the open sachet in one hand and provides a convenient large opening for a hand to reach into to take out content from the sachet.
• the sachet can take a relatively flat form when closed , convenient for storage and transport of the sachet, particularly for storage and tansport of multiple sachets, whilst wen opened the cone-like shape of the open sachet permits easy holding of the sachet in an open position, without risk of spilling/dropping contents from the open sachet, and easy access to the contents of the sachet
• cone-like is preferably meant that the shape resembles a geometrical cone to such an extent that it obtains the same properties with respect to ease of holding the sachet by hand. It does not need to be an exact cone in geometrical terms.
• the interior space is preferably fully closed, but sachets having interruptions in the sealing are also covered by the present invention.
• the tear strip is arranged along one sealing only, since the sachet is intended to be opened along one sealing only.
• the sachet may comprise a row of split lines in the sheet material along the tear strip to facilitate opening. This would be particularly relevant when the sheet is made from a material having relatively high tear strength.
• the tear strip may e.g. be made from a polymer material, such as polypropylene, comprising a self-adhesive treatment so that it is fastened to the sheet material as part of the manufacturing process.
• the adhesive may also have been applied to the tear strip as a part of the manufacturing of the sachet.
• the sachet is shaped as a right triangle having the tear strip arranged along one of the catheti.
• the sachet may be shaped as an isosceles right triangle.
• the means for starting opening of the sachet may be a pre-score or split extending from an edge of the sachet where the sheet is folded.
• the pre-score or split may extend towards a row of split lines located to so that a designated corner of the sachet can be manually torn off by starting at the pre-score or split.
• the row of split lines may extend to the tear-strip so that the tearing off of the designated corner can continue into a tearing along the tear strip.
• the combination of a torn-off corner and a torn-off edge results in an open sachet having a shape close to a truncated cone; i.e.
• the tear strip does not run all the way along an edge of the sachet. E.g. it does not need to run into a corner that is torn-off. In other embodiments it does not run all the way to the opposite corner, i.e. the corner where two sealed edges meet.
• the almost torn-off part stays attached to the sachet to avoid a small piece of rubbish that is likely to be thrown away by the consumer when opening the sachet.
• the tear strip should preferably run all the way to the corner where two sealed edges meet.
• the front layer and the rear layer of a sachet according to the invention may be joined by welding, e.g. by ultrasonic means, whereby a strong sealing which can withstand rough handling is ensured. It could also be joined by other suitable techniques, such as gluing, cold sealing, or other conventional sealing methods, depending on the properties of the material from which the sachet is made.
• the front layer and the rear layer may be joined by cold sealing.
• the sachet so that only one layer of the sachet is removed along the tear strip leaving a portion the second layer, e.g. the rear layer, exposed with cold sealing intact.
• the exposed portion of the second layer can form a flap, whereby the sachet can then be re-sealed by folding the flap formed by the exposed portion of the second layer over the opening.
• the cold-sealing strip on the second layer can thereby form a seal with the outside surface of first layer of the packaging material. This function may be improved by providing the layer to be torn-off with a row of split lines along and adjacent to the position of the tear strip.
• the sachet may be made from a sheet material which is impermeable to oxygen and/or to water vapour.
• the sheet material may e.g. be made of aluminium, polyester, polypropylene, polyamide, polystyrene, paper, copolymer of ethylene and vinyl alcohol, polyvinylidene chloride, polyvinyl acetate, bio-plastic or mixtures thereof.
• an eatable product is located inside the interior space.
• a product is preferably discrete food pieces which may e.g. have an average size in the range of 5 to 50 mm, such as 5 to 20 mm or 20 to 50 mm.
• the discrete food pieces have an average size in the range of from about 15 mm to about 50 mm, for instance from 20 to 40 mm 20 to 30 mm, or 30 to 40 mm, or for instance from 40 to 50 mm.
• the size of the product is defined as the maximum dimension of the product.
• the products could e.g. be a snack product, such as nuts, dried fruit pieces, crisps, chocolate, sweets or other confectionery.
• the product may also be pet food so that the sachet can easily be brought along e.g. when walking a dog.
• a second aspect of the invention relates to a chain of sachets being formed by a plurality of interconnected sachets according to any of the preceding claims. Such a chain is directly obtained by at least some of the manufacturing processes according to a third aspect of the invention as will be described in the following. Leaving the sachets in the chain may be advantageous e.g. with respect to display in a sales store.
• aspect of the invention relates to a method of manufacturing a triangular closed sachet holding a product, the method comprising:
• the tear strip is arranged between the front layer and the rear layer in proximity to and running at least partially along the sealing at one of the two edges joined by sealing.
• the third aspect of the invention also relates to a method of manufacturing a chain of interconnected triangular closed flexible sachets holding a product, comprising:
• the method of manufacturing a chain of triangular closed flexible sachet holding a product comprises:
• the tear strip may be pre-treated with self-adhesive before being applied to the sheet. Hereby it may be easy to ensure that the adhesive properties fulfil the necessary conditions to ensure a good fastening.
• the tear strip may be passed through a liquid adhesive before being applied to the sheet.
• the means for starting opening of the sachet may be a pre-score or split extending from an edge of the sachet where the sheet is folded.
• the sheet is folded upon itself at a 45 degrees angle relative to the length to form a right angle triangular shaped interior space.
• the front layer and the rear layer are preferably sealed along one edge before filling the interior space with the product and sealed along another edge after filling the interior space with the product.
• a partly closed interior space can be made before filling, so that it is easier to keep the product in the desired location.
• the method of providing the sealing may be selected from: welding, adhesive bonding, cold sealing,
• a method according to the invention may further comprise providing a row of split lines extending between the means for starting opening the sachet and the tear strip. Hereby a controlled opening of the sachet is ensured.
• Any of the embodiments of a method according to the invention may further comprise dissociating the chain of triangular sachets to form a plurality of individual triangular sachets.
• Figure 1 shows schematically a sachet in a closed condition.
• Figure 2 shows schematically a sachet in an opened condition.
• Figure 3 shows schematically the steps in the use of a sachet according to the present invention.
• Figure 4 shows schematically a sachet in an alternative opened condition, where the almost torn-off part stays attached to the sachet.
• Figure 5 shows a sachet having a cold sealing and where only the part of the front layer comprising sealing has been removed, whereas the rear layer with the cold sealing on has been left intact.
• Figure 6 shows schematically an overall folding procedure which may be used to obtain a chain of sachets shaped as isosceles right triangles.
• Figure 7 shows schematically a manufacturing method according to the present invention.
• Figure 8 is a further representation of the steps in a manufacturing method in which the sheet is rolled around itself before being sealed.
• Figure 1 shows schematically a triangularly shaped sachet 1 in a closed condition.
• the sachet 1 looks flat in the figure for illustrative purposes only.
• An un-opened sachet 1 will normally look more bulky to an extend depending on the amount and type of product located inside it.
• Such a product will typically be an eatable product intended for human, particularly discrete pieces of a food product of a size convenient to be picked up by hand.
• the sachet according to the invention is particularly suitable for snack products such as savory or sweet snack products in discete "bite-size" pieces, for example such as crisps, nuts, sweets, dried fruits, chocolate pieces, wafer or extruded cereal snack pieces, crackers, biscuits, or other snack food items.
• the sachet 1 may also contain e.g. pet food.
• the sachet 1 is formed by one sheet of flexible blank material, which has been folded upon itself to form a front layer 2 and a rear layer 3 of the sachet 1 ; the front layer 2 and the rear layer 3 are more clearly seen in figure 2.
• the front layer 2 and the rear layer 3 are joined by sealing 4 located along two edges 5 of the sachet 1 to define an interior space 6 (see figure 2) enclosed by the sheet material.
• the sachet 1 comprises means 7 for starting opening of the sachet 1 .
• Such means 7 is typically a pre-score or split extending from the edge 8 of the sachet 1 where the sheet is folded.
• a pre-score 7 extends towards a row of split lines 9 located to so that a designated corner 10 of the sachet 1 can be manually torn off by starting at the pre-score 7.
• a tear strip is 1 1 arranged between the front layer 2 and the rear layer 3 of the sachet 1 in close proximity to and along the sealing 4 at one of the two edges 5.
• the tear strip 1 1 is shown schematically with a broken line to indicate that it is arranged inside the sachet 1 and therefore not visible from the outside of an un-opened sachet 1 .
• the tear strip 1 1 is fastened to one or both of the front and rear layers 2,3 e.g. by adhesive.
• the sachet 1 illustrated in the figures is an isosceles right triangle having the tear strip 1 1 arranged along one of the catheti.
• the row of split lines 9 extends to the tear-strip 1 1 so that the tearing off of the designated corner 10 can continue into a tearing along the tear strip 1 1 .
• This will result in an opened sachet 1 as shown schematically in figure 2.
• the shape of the sachet 1 and the arrangement of the tear strip 1 1 provide that the sachet 1 obtains a cone-like shape after opening. Hereby it is easy to hold by one hand and also to share the product 12 contained in the sachet 1 with others.
• Figure 3 summarizes schematically the steps in the use of a sachet 1 according to the present invention.
• the opening is initiated at the pre-score 7 on the folded side 8, continues towards the edge 5 having the tear strip 1 1 arranged along the sealing 4, and is finished by tearing off that sealed edge 5.
• the pre-score 7 is arranged at a position along the folded side 8 so that a relatively large designated corner 10 is torn off.
• the pre-score 7 may also be arranged at other positions, such as the same distance from the edge 5 to be torn off as the tear strip 1 1 .
• FIG 4 shows schematically a sachet 1 in an alternative opened condition, where the almost torn-off part 13 stays attached to the sachet 1. This may be further ensured by incorporating some kind of reinforcement so that it is harder to tear the part 13 fully off. This situation can be facilitated by an embodiment in which the tear strip 1 1 does not run all the way along an edge 5 of the sachet 1. As described above, this may be desired to ensure that only one piece of waste is obtained, thereby increasing the chance of the consumer throwing all waste in a bin and not on the ground.
• the front layer 2 and the rear layer 3 are typically joined by welding, but any appropriate joining process for a given sheet material is covered by the scope of the present invention.
• the front layer 2 and the rear layer 3 are joined by cold sealing.
• Figure 5 shows schematically such a sachet 1 where only the part of the front layer 2 comprising sealing 4 has been removed, whereas the rear layer 3 with the cold sealing 4a on has been left intact.
• the exposed portion of the rear layer 3 can form a flap 3a.
• the sachet 1 can then be re-sealed by folding the flap 3a over the opening and fastening the cold sealing 4a on the flap 3a to the outside surface of the front layer 2, so that some of the content 12 can be saved for later.
• the invention can in principle be applied to sachets of any size.
• the intention is to obtain a sachet which is easy to hold in one hand, and typical dimensions and geometries will therefore be some resulting in a height of the sachet measured from a closed corner 14 to the opened corner at the other end 15 of the un-broken sealing 4 in the order of 50 to 200 mm, such as 80 to 1 50 mm , and preferably 100 to 130 mm.
• the width of a sealing 4 measured perpendicular to the edge 5 along which it runs is typically in the order of 3 to 15 mm, such as 3 to 8 mm or 8 to 15 mm. It should be wide enough to ensure a joining which stays intact before and during use of the sachet and on the other hand not significantly wider than necessary to keep manufacturing cost down.
• the tear strip will typically have a width in the order of 0.5 to 2 mm.
• the actual dimensions and strength depends on the strength of the sheet material from which the sachet 1 is made. This material may be any material which is suitable for storage of the content of the sachet. Possible materials are mentioned above.
• the position of the tear strip will typically be between just at the edge of the sealing 4 facing towards the interior space 6 and up to about 2 mm from the sealing 4.
• a sachet 1 as described above may be made by folding a single sheet at 45 degrees over itself, sealing and folding again , and so on.
• a possible manufacturing method will be described in the following.
• the method comprises folding upon itself a flexible sheet to form a triangular interior space 6; filling said triangular interior space 6 with the product 12; and sealing said at least one folded sheet along a plurality of sealing lines 4 so as to capture the product 12 in said interior space 6; and repeating the steps above one or more times.
• FIG. 6 shows plan views of the sheet at different stages of manufacturing the sachet 1 according to a method of the present invention.
• the figure is intended to illustrate the overall folding principle only, and details such as the pre-score 7 and the split lines 9 are omitted from this figure.
• the tear strip 1 1 may be a string of polymer material which is applied from a spool 16. It may be pre-treated with self-adhesive so that it sticks to the sheet material. A good adhesion may be ensured by applying a pressure P e.g. by means of one or more rollers (not shown).
• the sheet is foldable along the folding line 202 in the folding direction 204 so as to create in it an interior space 6 that may receive the product 12 to be stored therein.
• the length of the folding line is equal with the hypotenuse 104 of said triangle.
• the width 206 of sheet 200 is conveniently elected at the beginning of the manufacturing process so as to accommodate diagonally across a folding line 202 of length equal with the hypotenuse of the desired size of the sachet 1.
• the flexible sheet is then folded around itself along the lines 202 disposed at 45 degrees angle in the folding direction 204. Once one side of the triangle has aligned with the margin 208 of the blank 200 and the other side is perpendicular on said margin 208, the folding is accomplished and the desired enclosed right angle triangular shaped interior space 6 is formed.
• Figure 7 shows the same process as in figure 6 except that now an intermittent tear strip 1 1 is applied to the sheet 200.
• the length of each piece of tear strip 1 1 as well as the spacing between two subsequent pieces of tear strip 1 1 is determined so that the finished sachets 1 have tear strip 1 1 along one sealing 4 only.
• the actual length of the pieces of tear string 1 1 as well as the size of the spacings depend on whether a tear strip 1 1 is to run along the full length of a sealing 4, or whether it has to be shorter.
• the interior space 6 once filled with a product 12 is sealed along lines 402 and 403 to trap its contents inside.
• the sealing along line 402 may conveniently be performed before filling of the interior space 6.
• the flexible sheet is again folded upon itself at 45 degrees angle to form the next enclosed interior space 6.
• the operation is repeated one or more times, as many times as desired, until the desired number of triangular sachets 1 in the chain has been formed, or alternatively the length of the sheet has been exhausted.
• Figures 7 and 8 illustrate further embodiments of the manufacturing method of the present invention, wherein a chain of triangular closed flexible sachets 1 holding a product 12, is manufactured by a method comprising: rolling a sheet of flexible material around itself or around a tube until the margin of the sheet is united with the sheet itself enclosing a cylindrical volume and creating an overlap of the sheet with itself along the margin; joining the two layers of the sheet at the overlap by sealing to create a tubular structure; dispensing said product 12 into the tubular structure; and flattening the tubular structure and joining the already formed sealing to the opposite surface of the flattened tube creating a sealing of three layers enclosing triangular interior spaces 6 enclosing said product 12.
• a sheet of material is rolled upon itself as in figure 8 or around a tube as in figure 7 until the margin of the sheet is united with the sheet itself enclosing therefore a cylindrical volume of a predetermined circumference. Said rolling of the sheet may e.g. be continued until a second complete roll is realized. Between the first roll and the second roll there is a small overlap of material, overlap where the two layers may be joined by sealing, welding or the like thereby creating a tubular structure. As it may be observed in section view along section line A-A', an area of two blanks overlap is present along the section line, it is in this area that is sealed, e.g. by a melted sealing layer.
• the blank sheet 200 ingresses into the sachet welding machine under a 45 degree angle and is rolled, e.g. around the filing tube 800 in the direction indicated by the arrow (806). Upon rolling a sealing of the sheet material is created at the overlap (812) creating the tubular structure, e.g. around the filling tube 800.
• the filling tube 800 ingresses into said tubular structure at a depth conveniently elected so that the product 12 intended to be packaged in the sachets 1 may be dispensed.
• the tear strip material's movement is registered by electronic means in the tear-strip applying apparatus and is synchronised with the movement of the sheet material, in order to place the tear strip correctly.
• the tear strip is cut at the end of the desired application length and reapplied in the next appropriate position as dictated by the movement of the sheet material on the tube.
• the filling tube 800 may dispense in the direction indicated by the arrows the product intended to be packaged in the sachet 1 , in a space 6' that is delimited by a secondary sealing 802 closing the end of the tube.
• This sealing 802 corresponds to the ones shown with reference number 4 in the above description of the sachet 1 .
• the secondary sealing is formed by flattening the tubular structure and joining the already formed primary sealing to the opposite surface of the flattened tube creating a sealing of three layers. Following dispensing said product 12, the tubular structure comprising the product will be moved further in the direction of the arrows and a secondarily seal (802) will be formed again, to form a triangular closed sachet.
• the secondary seal forms an area of three blanks overlap joined, e.g. by melted sealing layers.
• the individually formed triangular sachets are filled by a vertical tube through which the product intended to be comprised by the individual triangular sachets are dispensed, progressively as each of the sachets 1 is formed using the steps described above.
• the result is a chain of right angle isosceles triangular sachets that are sealed on two sides, with the third side, the hypotenuse of said triangle, constituting the folding line of the flexible sheet, and connected together at the sealed sides.
• the sachet 1 may be provided with pre-scores 7 and/or split lines 9 as described above in relation to figures 1 to 5 to facilitate manual opening of the sachet. This may e.g. be done by laser cutting according to procedures which will be well known to a person skilled in the art.
• the described manufacturing process results in a chain of sachets which may be kept interconnected or separated, e.g. by cutting as a part of the manufacturing process. If the sachets are kept in a chain , the areas where they are to be separated later may be weakened, e..g by perforation, to facilitate the separation.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Packages (AREA)
• Bag Frames (AREA)
• Making Paper Articles (AREA)

Priority Applications (9)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47435951

Family Applications (1)

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Families Citing this family (7)

Citations (3)

Family Cites Families (31)

• 2011
  • 2011-12-23 EP EP11195673.6A patent/EP2607261A1/en not_active Withdrawn
• 2012
  • 2012-12-18 MY MYPI2014701567A patent/MY170955A/en unknown
  • 2012-12-18 AU AU2012357761A patent/AU2012357761A1/en not_active Abandoned
  • 2012-12-18 HU HUE12806443A patent/HUE032181T2/en unknown
  • 2012-12-18 US US14/367,785 patent/US20150217919A1/en not_active Abandoned
  • 2012-12-18 EP EP12806443.3A patent/EP2794422B1/en active Active
  • 2012-12-18 BR BR112014015325A patent/BR112014015325A8/pt not_active IP Right Cessation
  • 2012-12-18 PL PL12806443T patent/PL2794422T3/pl unknown
  • 2012-12-18 ES ES12806443.3T patent/ES2624206T3/es active Active
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