JP2011512301A - Easy-to-open package - Google Patents

Abstract

  A method for producing a package of the type formed from a single-layer or multi-layer material sheet, said package having features that are easy to open, the sheet being suitable for contacting an object to be packaged Forming a film into a cylinder by joining the two side edges of the sheet in a longitudinal direction, the method comprising: forming a film into a cylinder; Then, the coupling part creates a side flap (10) outside the cylinder, or the cylinder is passed through a former with protruding fins, so that a side flap is formed outside the cylinder and the cross seal (3, 4) is provided across the cylinder so that each package is delimited between two cross seals to separate / separate two adjacent packages A cut line (25) is formed in the cross seal, and a perforation (7) in a layer of one material sheet is parallel to the side flap and adjacent to the side flap, from the cut line toward the cross seal or It extends into the cross seal.

Description

  The present invention relates to a method for producing a package of the type formed from a single-layer or multi-layer material sheet, similar to a form, fill and seal machine (FFS apparatus), and further to the present invention. The present invention relates to a package manufactured by such an FFS apparatus.

  In the art, FFS devices are widely used in connection with the packaging of a wide variety of goods, particularly foodstuffs, candy and many other objects. Basically, an FFS device operates by feeding a sheet of material that is fed by the former of the device continuously when the sheet is fed to the device. It is formed into a cylinder by gluing together. Means for creating an end seal called a cross seal within the scope of the present application are provided further downstream of the device so that the tube is delimited transversely to the longitudinal direction of the tube, and so on. After the object to be packaged is filled in a cylinder with a defined range, an end seal is again provided in the transverse direction with respect to the longitudinal direction of the cylinder. In this way, a very cheap, purposeful and reliable package is produced at a minimum cost. The material sheet is typically a polymeric substrate and may be provided with printing so that information about the object in the package is communicated to the user.

  These types of packages are widely known in the art and are used daily by most consumers. Examples of various embodiments and devices used in the manufacturing process are disclosed in WO 03/045816, US 2007/269146, EP 176908, EP Disclosure in Japanese Patent No. 176043, European Patent Application No. 1026077, International Publication No. 2007/106916, Japanese Patent Laid-Open No. 10-305806, International Publication No. 2004/002835, and many other documents. Has been.

  One problem that arises with this type of well-known packaging is the situation where the consumer or user must open the package. Typically, the longitudinal joint between the two side edges of the sheet of material is welded together, thereby creating a side flap, and into the interior if the side flap is coincident with the end seal It is natural that consumers try to open the package to gain access. Seals are usually created by welding polymeric materials together so that a relatively strong bond is created at both the end seals and side flaps, the relatively strong bond being When trying to open a package, it requires considerable power to break the package and spread the contents while opening.

  In this connection, attempts have been made to design the weld so that the desired opening force is required. This in turn requires that the surfaces to be welded together have certain properties that allow welding / fusion. For example, a foil used for wrapping / packaging items such as candy usually has a plurality of layers. Typically, a layer printed with a picture, text, etc. will be covered by a thin protective layer. The layer thickness typically ranges from 5 μm to 60 μm so that the entire foil is the sum of the various layer thicknesses. Other layers may be added, such as a layer that exhibits unidirectional tearability and / or a barrier layer. All of these layers exhibit different properties and together provide the desired properties to the foil during foil welding / fusion. When these types of multilayer foils are used in FFS devices (both horizontal and vertical), it is usually the outer surface that must be bonded to the inner surface. U.S. Pat. No. 5,826,985 discloses these embodiments. Thus, in addition to having the desired quality (barrier, printing, etc.), the foils should be weldable / fusionable to each other.

  Various solutions have been proposed to avoid this. One such solution is limited to a few millimeters in the longitudinal end seal and within the end so that a tearing origin is created and thereby, for example, the corners of the package can be torn relatively easily. It is to make a small cut. See various examples in Japanese Patent Application Laid-Open Nos. 10-250764, 2003-191965, WO 92/16431, and JP-A 2004-182267. In some of these examples, the tearing operation is aided by further providing a tear line in the form of a cut that runs partially through the foil layer along the location intended to be opened or the tape is pulled. This is aided by providing the tape so that the tape will tear the foil as it is being done. This in turn creates a relatively limited opening in most cases, in some cases similar to that already described above, depending on the method by which the corners are torn off and the material from which the package is made. Create a situation that can destroy the package. See for example US Pat. No. 5,826,985.

  The commonality of these two types of opening is the fact that once a package is torn, it is impossible to reseal the package unless all the contents are used.

  For these purposes, many solutions have been proposed, for example by incorporating a resealable zipper into the material adjacent to the end seal. However, this is a relatively expensive process and also requires that the package size remain relatively constant even after a portion of the contents has been removed.

  It is an object of the present invention to provide a method and apparatus and a package that solves the above-mentioned problems to some extent, and in particular without using such a great force that the user takes the risk of destroying the entire package in the process. It is an object to provide a method and apparatus and a package that provides further advantages with respect to an inexpensive and reliable aspect of providing an opening for a package of the type described above where the package can be opened.

The present invention addresses this by providing a method for manufacturing a package formed from a single or multi-layer material sheet, the package having features that are easy to open, the sheet being packaged. Shaped as a finished product package having an inner surface suitable for contacting an object to be made and an outer surface, the method comprising:
Forming a cylinder from the sheet by joining two side edges of the sheet in the longitudinal direction;
The joint creates a side flap on the outside of the cylinder or the cylinder passes over a former having protruding fins, so that a side flap is formed on the outside of the cylinder,
A cross seal is provided across the tube so that each package is delimited between the two cross seals;
A tear line is formed in or between the cross seals to separate / separate two adjacent packages;
A perforation or sheet of one sheet extending from the tear line parallel to the side flaps or fins or at an angle of up to 60 ° with respect to the side flaps or fins and extending toward or into the cross seal One or more layers of perforations are formed.

  First, it should be noted that during the package formation process, the package filling step has been excluded, as is widely known in the art, depending on the type of equipment that introduces the product into this type of package. It is. The present invention is independent of the type of equipment used to fill the package and is only concerned with providing new features for opening the finished package.

  This is achieved in particular by the final step, i.e. perforation of one material layer adjacent to the side flaps. When the user holds the package with one hand and pulls the edge of the side flap with the other hand, it tears the material very open so that it can access the inside of the package without destroying the package The perforations are parallel to the side flaps at a small distance from the edge of the tear line toward the cross seal or within the cross seal so that the perforation provides an easy tear point from which to tear the material. It extends. Repeat testing clearly showed that a very simple opening was provided and that the opening was well formed and limited to the desired part of the package.

  A perforation with only one material layer has a perforation that penetrates the material layer, the package material on both sides of the package is torn at the same time, thereby breaking the entire package, and the cut is all material of the cross seal It is clearly different from the proposed solution in that it penetrates the layers. By limiting the perforation to penetrate only one layer of material, the tearing action to the side flaps by the user will create a relatively clean tear opening in the package without destroying the package as a whole. Let's go.

  In the art, a distinction is made between the manner in which this type of package is manufactured. If the contents are inserted into the package when the package is shaped in a vertical position, it is known as a vertical form fill seal device. As a result, when the contents are inserted horizontally, it is known as a horizontal form-fill-seal device. For the purposes of the present invention, the use of both types of devices has equal success.

  Furthermore, a distinction is made between the two main types, lap seals and fin seals, in the manner in which the seal created during the formation of the sheet material into the package is made. A lap seal is created by simply placing one sheet over the other and welding, bonding or otherwise bonding the two sheets. In this way, two different sides of the sheet will be joined, i.e. what should be the inner surface of the package and what will be the outer surface of the package. When using a fin seal, both sides or inner surfaces of the sheet are joined together, thereby creating a flap or fin.

  Within the scope of the present invention, as long as fins or flaps are provided, the aspect of the seal has no effect on the present invention. For these reasons, it is anticipated that means will be provided in situations where a wrap seal is used or where the fin seal creates a fin / flap where it is not desired to open the package. The flap may be created by a former tool or may be provided as a separate piece of sheet material that is glued or welded to the outside of the tube.

  In this context, it is also important to fully understand what the clear expression “single layer or multilayer material sheet” means. In this technical field, for example, referring to US Pat. No. 5,826,985, a number of layers each have unique properties so that a finished sheet is created to have specific characteristics for a specified purpose. It is common to use sheets formed from different layers. Examples of layers are the mentioned layers that can be cleaved only in one direction, such as layers with special coatings such as metal to make a layer that does not leak vapor, layers such as ultraviolet (UV) protective layers, barriers, etc. obtain. Although the configuration of the sheet is not important with respect to the present invention, in some embodiments of the present invention, the perforation penetrates some of the material layers that form the sheet material in order to achieve the desired effect. May be sufficient.

  In particular, when lasers are used in combination with polyethylene (PE), unstretched polypropylene (CPP) or polypropylene (PP), including material layers, it is only necessary to perforate some layers. It is important to fully understand. This is due to the fact that relatively high energy lasers are required to laser cut these materials, while other sheet materials require substantially lower laser energy. As mentioned above, the same splitting effect is achieved, so there is enough energy for both the reason for energy consumption and the cost of the laser and for perforating PE, CPP, PP. It is advantageous to perforate only those layers that do not require high intensity lasers because of the reduced manufacturing speed when they must be transmitted to CPP, PP.

  Depending on the structure of the sheet, the direction of the perforation, i.e., between the angle parallel to the flaps and below 60 °, will promote the desired effect. This is due to the fact that the perforations when exposed to tears by pulling on the flaps will guide the tears that are welded and thereby formed towards the flaps that form a stronger structure than the sheet material. to cause. If the split hits the flap, the tear will follow the flap, even from a 60 ° angle, thereby providing the desired creative effect.

In a further advantageous embodiment of the new and inventive method, the perforation of one sheet material layer comprises:
In a non-seal portion of one sheet material that protrudes between the cross seal and the tear line separating two adjacent packages, or
In the non-sealed part and part of the cross seal, or
If the cross seal is immediately adjacent to the tear line between two adjacent packages, it is formed either within the cross seal only.

  By limiting the perforation to be positioned within the cross seal, at the free end of the sheet, or a combination thereof, the volume in which the goods in the package are contained is still sealed, thereby surrounding Not exposed.

  In a further advantageous embodiment, the material sheet is a polymeric material sheet and the seals and joints are created by thermal fusion or welding. This is the most common type of material used for the vast majority of packages made from sheet material. While thermal fusion or welding, of course, provides a highly reliable seal, depending on the choice of sheet material, it provides a highly reliable seal, but usually the welded portion is more than comparable sheet material. Will be strong.

  An alternative sheet material is addressed in a further advantageous embodiment in which the material is a non-weldable or non-heat-fusionable material, in which the material is coated or uncoated Sealed by applying an adhesive between the surfaces of the materials to be joined to create a seal, selected from one or more of cellulose-based materials, polymeric films, aluminum-based sheets And a joint is created. In this connection, it is known to use paper sheet material, for example on one side, i.e. the side intended to contact the product to be packaged, said paper sheet material theoretically by welding. Although provided with a polymeric coating so that the seal can be created, due to all properties of the sheet material, ie paper, it is necessary to use an adhesive to create the seal.

  When this processing is used, for example, in a so-called vertical FFS device, the sheet material is formed into a cylinder around the pipe or former, which pipe simultaneously fills the package with the substance to be packaged. used. Here, the edge portions of the material sheet are put on top of each other and welded or glued depending on the type of sheet material, and the filled pipe can be used as a land, ie as a backing for the welding wheel. In these examples, side flaps are not created, and therefore the invention in a further advantageous embodiment comprises two rollers, so that the side flaps pass through the fins of the alternative embodiment described above. The side flaps are exposed to heat or heat and / or pressure exerted by two rollers disposed on both sides of the side flaps and biased towards the side flaps. Although conventional manufacture of this type of package does not require side fins, side flaps are thus created, but due to the advantageous opening procedure incorporating the perforations according to the present invention, The flaps are preferred and therefore provided so that the fins on the filling pipe cooperate with the lateral rollers.

In order to create perforations, perforation tools are provided, which are the following:
A cutter or rotating cutter head that is controlled in relation to the production speed, the cutter head having a plurality of cutting edges spaced apart and cooperating with the land, the land comprising the cutter and the land Between which the material passes, whereby the operation of the cutter forms a perforation in the material, the material being cut contacting the land or a rotating cutter head;
Selected from one or more of a laser device,
The perforation positioning is arranged with respect to a marker provided on the sheet material according to the desired package size, for detecting said marker and using this information as input for operating the perforation tool Means are provided.

  In this connection, only one material layer is cut as already described above so that it can be achieved to tear and open the package easily and reliably without destroying the package, And therefore, it is very important that the land cooperates with the cutter so that the land is behind the material and the cutter is placed on the opposite side when the cutter is activated. The land will prevent further entry into the material.

  The use of laser devices for either perforation or notching is a well-known technique. It is known in the art to operate a laser so that the laser penetrates only a very small distance into the material. This can be further enhanced by providing a coating inside the material, so that the laser device will detect the properties of the different materials, thereby reducing the depth of a particular material layer. The depth of penetration of the laser is defined, thereby allowing a very efficient perforation to only one layer of packaging material with a cross seal.

  In order to position the perforations within the cross seal at a relatively high production rate, the package material typically comprises indicia such as bar codes, prints, print markers, etc. intended to be on each package. These markers can be used as input to a perforation tool that is arranged downstream from the phototube and actuated in response to marker detection, for example, detection for a phototube Can be used as a point. In this way, very well proven techniques that are already in the device in some cases can be further utilized to be used as input to the perforation tool, thereby disconnecting. Make perforations in the correct and correct position for the line.

  In order to be able to carry out the inventive method according to the invention, the invention also discloses a form-fill-seal device for forming a package, said device comprising means for conveying a continuous sheet material through said device. The device comprises means for creating at least one side flap on the package, the device forming a severing line with means for forming a sealed intersection region extending generally transverse to the side flap Means for forming, wherein the severing line is formed in the intersecting region, the sealed intersecting region having a thickness of at least two material layers, the device comprising a sewing machine A perforation tool is provided, and the perforation tool forms a perforation in one of two material layers adjacent in parallel to the side flaps. Eyes that extends in the sealed cross zone, and perforations, characterized in that it extends at least to detach line.

  Although the present invention will be described for a so-called in-line manufacturing method, the present invention is also suitable for batch manufacturing.

  In-line means that the packaging material is supplied at one end of the packaging device and the finished package containing the goods to be packaged is taken out at the other end. This is, of course, a reasonable and possible use of the invention. However, the present invention is also suitable for use in such a way that the packaging material is roughly shaped into a finished package, for example, with one end open. At a later stage or at another location, the package is filled and sealed with the goods to be packaged thereafter.

  The features of the invention that allow the method of the invention as described above to be implemented are described in detail in the dependent embodiments.

FIG. 4 shows various embodiments of a package according to the present invention. FIG. 4 shows various embodiments of a package according to the present invention. FIG. 4 shows various embodiments of a package according to the present invention. FIG. 4 shows various embodiments of a package according to the present invention. FIG. 4 shows various embodiments of a package according to the present invention. It is a figure which shows the perforation tool adjacent to a side flap former. It is a figure which shows the last process of a manufacturing process. It is a figure which shows the fin and roller which produce a side flap. It is a figure which shows the fin and roller which produce a side flap. It is a figure which shows a continuation of the package of the finished product which concerns on this invention. FIG. 8 is substantially the same as FIG. 7 and shows a further embodiment. FIG. 6 shows an embodiment where the flap is a separate member.

  1-5 illustrate various examples of packages having perforations, thereby providing easy-open features according to the present invention.

  In FIG. 1, the whole package is indicated by reference numeral 1 in its most basic configuration. The material sheet 2 was formed as a package 1 delimited by cross seals 3, 4 on both sides of the package 1. Referring to FIGS. 7 and 10, the definition of the cross seal and the overall direction of the package are determined depending on the manner of manufacture of the package.

  As is apparent from FIGS. 7 and 10, the package is theoretically formed from an endless material sheet 1, and the material sheet 1 is formed into a cylindrical shape from the sheet by a former (not shown). For example, a tube is created by welding together the sheet material adjacent to the two edges 5, 6 of the sheet material, thereby creating a side flap 10 at the same time as creating the tube. Please refer to FIG.

  After the side flap 10 is created, the cylinder will be sealed with the cross seals 3, 4 to create the space specified by the formed cylinder and the cross seals 3, 4.

  Perforations or cutouts 7 are provided so that the package can be opened easily. In the embodiment shown with reference to FIG. 1, the perforations 7 are provided at both ends of the side flap 10, but the same advantage can be achieved even if only one perforation 7 is provided at one end of the side flap. It is.

  The perforation 7 is provided in parallel to the side flap 10 and adjacent to the side flap 10, so that an opening from the inside of the package 1 to the periphery is not provided in the longitudinal direction of the package indicated by the arrow 50. The length of the entire perforation is maintained within the cross seal 3.

  FIG. 4 shows a situation in which the corner 11 of the side flap 10 is lifted with respect to the package, so that the tear 8 starting from the perforation 7 is a simple and almost straight opening of the package. Makes it possible to produce

  As indicated by reference numeral 12, the lower material layer is intact and only the top material sheet 13 is torn.

  In the embodiment shown with reference to FIG. 1, these types of packages are typically manufactured in so-called horizontal form-fill-seal (FFS) devices, whereas the package shown with reference to FIG. 9 would typically be manufactured in a vertical FFS device in which the edges 5 ', 6' partially overlap each other to create a bonded seal 20, so that the formation of the cylinder from the material sheet 2 would be The side flap 10 is not provided. In this case, the side flaps can be provided by installing a side flap former as shown with reference to FIGS.

  Referring to FIG. 8, the former / filling pipe 14 is shown. A material sheet (not shown) surrounds the former pipe at this point, and a coupling seal 20 (see FIG. 2) is provided so that the material sheet is in the shape of a cylinder at this stage. The cylinder is located outside the former / filling pipe 14, and as the cylinder advances toward the bottom of FIG. 8, the cylinder engages the fins 15 so that a fold is created in the sheet material. As the material advances further, the fold will be sandwiched between two rollers 16, 17 that are biased toward each other. Depending on the type of material used to form the package, the rollers sandwich the folds together, so that the inner parts of the adhesive-applied material sheets (here in the form of cylinders) are brought together The fold can be sealed by providing an adhesive nozzle just before the rollers 16, 17 and just downstream of the fins 15 so as to sandwich and thereby create the side flap 10. Alternatively, if the sheet material is suitable for welding, the rollers 16, 17 are welded so that the folds are fused together in the welding process by heating the roller, thereby creating the side flap 10. It may be.

  Therefore, referring back to FIG. 2, the side flaps 10 and the perforations 7 are provided exactly corresponding to the embodiment described with reference to FIG.

  FIG. 3 shows another technology combination embodiment. The cross seals 3, 4 are manufactured in the same way as the above-described embodiment that will be further described with reference to FIG. 6, and the edges 5 ″, 6 so that a sealed package 2 is created. A longitudinal seal 18 is further provided to couple the ''. Thus, the embodiment shown in FIG. 3 thus completely corresponds to the embodiment shown with reference to FIG.

  However, in certain instances, it is preferable to be able to position the longitudinal seal 18 independently of the preferred location for opening the package, and is thus manufactured as described with reference to FIG. The side flap 10 is provided in another position where the side flap 10 is provided adjacent to the perforation 7, thereby providing a novel and inventive easy tear-open feature of this type of package. . For practical purposes, the seal 18 is further fastened to the surface of the package material, and the cross seals 3, 4 so that the user does not accidentally open the package by pulling on the edge seal 18. It is fastened to.

  A further embodiment is shown with reference to FIG. 5, in which the package is opened by tearing on the side flaps 10, thus providing access to the interior of the package. The perforations 7 are split so that half of the perforations are on the side flaps 10 and the other half of the perforations 7 are on the package itself. The package was further provided with a reseal strip 20 disposed on the current bottom of the side flap and disposed parallel to the longitudinal direction 50 (see FIG. 1). It is possible to reseal the package by partially overlapping the side flaps 10 on the front surface 19 of the package and by pressing a resealable seal 20 against the surface 19, so that It is possible to retain the remainder of the package contents.

  The type of material used for the resealable seal 20 can be selected depending on the situation depending on the sheet material and the quality of the reseal properties desired to be realized. The seal 20 may be selected from a so-called re-stickable material as long as it satisfies the requirement that the side flap 10 can be pressed against the surface 19 of the package, or simply a double-sided adhesive tape or the like. Good.

  In these embodiments, it is possible to create a stronger and more robust package using current technology than would otherwise be achievable using conventional peel technology. Perforations (simple opening means) will make it easier to open the package by providing a release strip on the sheet of material when the release capability of the release material is small. In this way, easy peel joints can be made stronger when the perforation helps to open the package, thereby making the package stronger and more durable without sacrificing ease of peeling. Can be manufactured.

  Referring to FIG. 6, a schematic diagram of a method for manufacturing the perforation 7 is shown. Prior to the method steps shown with reference to FIG. 6, the packaging material 2 was placed around the former so that a cylinder was created. The cylinder has an internal space 21 delimited by the package material 2. Furthermore, the two edges 5, 6 of the packaging material are arranged to be inserted between the two rollers 22, 23. The rollers may be heated so that the package material 2 is welded together to form the side flaps 10 as already described above. Instead, nozzles that provide adhesive material inside the edges 5, 6 are provided on the rollers 22, 23 so that the rollers urged toward each other press the two edge portions together, thereby creating the side flap 10. It may be provided immediately upstream. The package material moves in the direction 51 indicated by the arrow, and the directions “upstream” and “downstream” are defined relative to this direction of movement of the package material 2.

  Markers (not shown) may be provided on the surface of the package material 2, so that when the detection unit detects / records the markers, this recording will be used as an input to the perforation tool. Of the perforation tool, only the cutting blade 24 that actually cuts the perforation is shown. These markers are usually found in the printed sheet material in order to position the print accurately in a cutting zone that cuts into two packages. Input from the marker recording means is used to actuate the perforation tool so that the cutting blade 24 can be repeatedly moved up and down as indicated by the arrow 52 so that the cutting blade can be Put perforation 7 in the position. These predetermined positions are determined with respect to the marker such that the perforation as shown on the underside of the side flap 10 crosses the cut line 25. The separation line is provided as a shear line where different packages can be separated into individual packages so that the two packages 1 ′, 1 ″ are separated, and the perforations 7 are parallel to the side flaps 10 and the edges of the package And the edge is created by a tear line 25 and is within a cross seal (not shown). In FIG. 6, it was chosen not to show a cross seal to clarify the position of the perforation with respect to the tear line. The package produced by the method shown with reference to FIG. 6 will have the overall appearance shown and described above with reference to FIGS.

  The perforation may be on one side only, i.e. the perforation 7 'as shown on the upper side of the side flap 10, only on one side of the severing line, so that there may be only one location on the resulting package.

  As the packaging material advances from the method steps shown with reference to FIG. 6, the packaging material 2 is converted into a cylinder, and side flaps 10 are provided on the surface of the cylinder to separate it into packages 1 ′, 1 ″. A perforation 7 is formed parallel to the longitudinal direction of the side flaps adjacent to or across the intended cut line 25.

  As the cylinder advances, the cylinder is subjected to the method steps described with reference to FIG. The material sheet formed in the cylinder by the process of FIG. 6 advances toward the sealing device 30. Although the sealing device is described only very roughly, any type of device capable of creating a cross seal 3, 4 can be used in the present application. Furthermore, in the embodiment shown in FIG. 7, the sealing means 30 further comprises cross seals 3, 4, side flaps 10 and perforations 7 as a result of the operation of the new and inventive method and apparatus according to the invention. Means are provided for separating the packages so that separate packages 1 ', 1' 'are produced. The operation of the sealing means 30 is that the sealing means 30 is actuated in the direction indicated by the arrow 53 so that the cross seals 3, 4 and the separation of the packages 1 ', 1' 'are for the perforation 7 and the overall size of the package It is executed in response to the presence of the separation line 25 so as to be formed at an accurate position.

  The sealing means 30 may not comprise means for separating the packages, so that a continuous arrangement of the packages 1 ′, 1 ″ separated by the cross seal results, referring to FIG. The result is a series of packages as shown. The separation line 25 shown between the cross seals 3, 4 may be perforated, for example, so that a user can easily pull one package away from an adjacent package, or one from an adjacent package. The package may be partially cut so that the package can be easily pulled away.

  FIG. 11 shows a further embodiment in which a plurality of perforations 60, 60 ', 60' 'are shown. Although the illustrated embodiment shows three perforations that are substantially parallel, any number of perforations may be used depending on the size and material of the package. The perforations are the same as the perforations described above. Although the perforations are shown as being arranged substantially parallel to the vertical flaps 10, they may be arranged at an angle in the vertical direction of the flaps. It has been found that angles up to approximately 60 ° achieve the effects of the present invention. For example, when a package such as indicated by 1 '' or 1 'is opened, the flap 10 is pulled away from the plane of the package, for example by grasping the flap in the area indicated by 56 and pulling in the direction indicated by arrow 62. It is. The material from which the package 1 ″, 1 ′ is manufactured easily creates a tear that is the origin of the tear at one of the perforations 60, 60 ′ or 60 ″. The tear will propagate toward the weld of the flap 10 and then the tear will follow the intersection between the flap 10 and the front surface 54 of the package.

  FIG. 12 shows an embodiment in which the flap 10 is welded onto the sheet material 2 by the welded portion 26. The flap 10 is disposed adjacent to the perforation 60. Alternatively, the flap can be attached with an adhesive. The joint between the flap 10 and the sheet 2 must be such that pulling the flap 10 causes the perforation 60 to start tearing without the flap 10 being pulled apart.

  The invention has been described above in embodiments in which the seal is created by either welding or fusing the layers of material together by heating, or by applying an adhesive to create a seal. In particular the latter, i.e. the adhesive solution, is used for many purposes, but is particularly relevant for applications where the object or material to be packaged is not suitable for being heated, or An application where the spray of adhesive can be at risk of having a detrimental effect on the properties of the object / material.

  One such example is chocolate. For these applications, cold sealing technology has been developed, in which adhesive is applied to the edges to be joined prior to the preparation of the sheet material for the packaging device. The surface of the adhesive is dry and does not stick. However, when the cold-sealed adhesive-coated region is placed between two rollers biased towards each other, for example, when facing each other and subjected to pressure, the adhesive seal Is formed. While heat may be applied in addition to pressure, it is much less than that of the welding process.

  This sealing technique may be used within the present invention to form a seal.

  Although the invention has been described with reference to specific embodiments, the scope of protection is only specified by the appended claims.

Claims (15)

A method of manufacturing a package of the type formed from a single or multi-layer material sheet, wherein the package has features that are easy to open, the material sheet being in contact with an object to be packaged Formed as a finished product package having an inner surface suitable for and an outer surface, the method comprising:
Forming the material sheet as a cylinder by joining two side edges of the sheet in a longitudinal direction;
The coupling part creates a side flap on the outside of the tube or the tube passes over a former having a protruding fin, and as a result, a side flap is formed on the outside of the tube, or a vertical direction on the outside of the tube Fins are attached to
A cross seal is provided across the tube so that each package is delimited between two cross seals;
A tear line is formed in the intersecting seal to separate / separate two adjacent packages,
Adjacent to the side flaps or fins, extends from the tear line parallel to the side flaps or fins or at an angle of up to 60 ° with respect to the side flaps or fins to the cross seal. Formed from a single-layer or multi-layer material sheet in which a perforation of a layer of one material sheet or one or more layers of perforations forming the sheet is formed extending towards or into the cross seal A method of manufacturing a type of package. The perforation of the layer of one sheet material is
In the unsealed portion of the one sheet material that protrudes between the cross seal and the tear line that separates two adjacent packages; or
In the non-sealed part and part of the cross seal, or
The method of claim 1, wherein if the cross seal is immediately adjacent to the tear line between two adjacent packages, it is formed either within the cross seal only. The perforations of the one sheet material layer are:
A cutter or rotating cutter head controlled in relation to the production speed, said cutter head having a plurality of cutting edges spaced apart and cooperating with the land, between the cutter and the land The lands are arranged so that the material passes through, whereby actuation of the cutter forms perforations in the material, the material contacting the lands when cutting, or a cutter or rotating cutter head;
A laser device, wherein the perforation is positioned relative to a marker provided on the sheet material according to a desired size of the package to detect the marker and to perforate this information A method according to claim 1, formed by a perforation tool selected from one or more of: a laser device provided with means for use as an input for actuating.   By stacking the sheets and joining the edges of the stacked sheets, two separate material sheets are formed in the tube, and as a result, the tube having side seals along the longitudinal edges The method of claim 1, wherein:   A plurality of substantially parallel perforations in the layer of one sheet material or a plurality of substantially parallel perforations in one or more material layers forming the sheet material are parallel to the side flaps adjacent to the cut line. The method according to claim 1 or 2, wherein the method is formed at an angle of up to 60 ° with respect to the side flap.   The cross seal is provided only at one end of each package, so that when the plurality of packages are cut into separate packages along the cut line, each package opens at the one end. The method according to claim 1 or 2.   The flap is a part that is separate from the sheet material and is attached to the outside of the cylinder, and the flap is required when the joint between the flap and the cylinder starts to tear at the perforation. The method according to any one of claims 1 to 6, wherein the method is fastened by means stronger than the tear strength to be applied.   A vertical or horizontal form-fill-seal device for forming a package, the device comprising means for conveying continuous sheet material through the device, the device creating at least one side flap in the package And means for forming a sealed intersection zone extending substantially transversely to the side flaps and means for forming a disconnect line, the disconnect line Is formed in the crossing zone, and the sealed crossing zone has a thickness of at least two layers of sheet material, the apparatus comprises a perforation tool, the perforation tool Is a perforation substantially parallel to one of the layers of at least two sheet materials adjacent to the side flap or an angle of up to 60 ° with respect to the side flap Perforation was formed Nasu, the perforations extend in the sealed cross the zone, said perforations extending at least to the separation line, vertical or horizontal form-fill-seal apparatus for forming a package.   Means are provided for detecting and / or determining the severing line, the means providing input to the perforation tool so that the operation of the perforation tool depends on the position of the severing line. The molded filling sealing device according to claim 8, which is executed as described above.   9. The form-fill-seal device of claim 8, wherein the perforation tool is operated to form a perforation in a sheet material layer at a distance on either side of the tear line.   9. The molded, filled and sealed device of claim 8, wherein the seal has a width of 3 mm to 50 mm, more preferably 5 mm to 20 mm, and most preferably 7 mm to 12 mm.   The apparatus includes cylinder forming means for forming the sheet material into a cylinder, and a fin extending radially from the surface of the cylinder forming means is adjacent to the roller upstream of two heatable rollers. As a result, when the cylinder passes through the fins, a vertical flap is formed in the cylinder, and the roller sandwiches the flaps and optionally the material of the cylinder. The molded filling sealing device according to claim 8, which are welded together.   The perforation tool is a cutting blade, a laser cutter, a puncher, or a thermal cutter, or any combination thereof, and optionally, a back plate facing the perforation tool 9 is arranged as a land for the perforation tool, and the arrangement of the back plate and the perforation tool allows packaging material to pass between the perforation tool and the back plate. The molded filling sealing device as described.   14. A package of the type manufactured by the horizontal or vertical molded, filling and sealing device according to any one of claims 8 to 13, wherein the package is formed from a sheet material, and the length of the package. A side flap along the length of the package and a cross seal disposed transversely to the side flap at both ends of the package, the seal comprising at least two layers of sheet material At least one perforation substantially parallel to the side flap at one cross seal portion or at least one perforation forming an angle of up to 60 ° with respect to the side flap. Are encased in a layer of material, and the perforations are provided adjacent to the side flaps, and the perforations Package, which extends to the free edge of the package.   15. The package of claim 14, wherein a plurality of substantially perforations are provided spaced apart from one another and optionally substantially parallel on either side of the flap.

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