US20150307260A1 - Single-dose sealed pack with break opening - Google Patents

Single-dose sealed pack with break opening Download PDF

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Publication number
US20150307260A1
US20150307260A1 US14/646,362 US201314646362A US2015307260A1 US 20150307260 A1 US20150307260 A1 US 20150307260A1 US 201314646362 A US201314646362 A US 201314646362A US 2015307260 A1 US2015307260 A1 US 2015307260A1
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Prior art keywords
pack
layer
sheet
cut
barrier layer
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Abandoned
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US14/646,362
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English (en)
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Bruno Reggio
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CARDONE Srl
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CARDONE Srl
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    • 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
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/585—Tear-lines provided in a wall portion the tear-lines being broken by deformation or bending
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/04—Containers or packages with special means for dispensing contents for dispensing annular, disc-shaped, or spherical or like small articles, e.g. tablets or pills
    • B65D83/0445—Containers or packages with special means for dispensing contents for dispensing annular, disc-shaped, or spherical or like small articles, e.g. tablets or pills all the articles being stored in individual compartments

Definitions

  • the present invention relates to a single-dose sealed pack with break opening.
  • single-dose packs with break opening are made up of a sheet of semi-rigid plastic material superimposed and sealed on a sheet of flexible plastic material so as to define a sealed containment chamber containing a dose of a liquid product.
  • the sheet of semi-rigid material has a central pre-cut which facilitates and guides the subsequent breakage.
  • US 2005/0178086 describes a single-dose pack, the semi-rigid sheet of which consists, proceeding from the inside towards the outside, of a sealing layer of flexible type, a barrier layer, which is also flexible, a semi-rigid bearing layer and an outer covering layer.
  • the pack described by US 2005/0178086 then comprises two cuts defined in correspondence to its opposite faces and suitable for guiding its breakage.
  • the cut defined on the inner face involves the innermost sealing layer, the barrier layer and the bearing layer.
  • the thickness of the various layers is very high, thus involving high manufacturing costs.
  • the extra thickness of the layers is in particular to be put down to the need to maintain a big enough quantity of material between the cuts defined on the opposite faces of the semi-rigid sheet in order to prevent any undesired escape of the product occurring.
  • the packs made this way do not ensure the correct seal of the product inside them.
  • the barrier layer must necessarily be affected by the cut defined on the inner face of the semi-rigid sheet so as to ensure its breakage following the bending of the pack itself. This does however involve the risk of the contained product coming into contact with the barrier layer, undermining it and reacting with it, until it causes the deterioration of its properties in the case of particularly aggressive products.
  • the sealing layer has a high elongation at break, it frequently occurs that such layer, once deformed, fails to break following the bending of the pack.
  • the only way of ensuring pack opening is to make a cut such as to perforate the sealing layer and the barrier layer. Because the barrier properties of the layers also depend on their thickness, the deformation of same could affect their permeability to the gases in both directions.
  • the document WO 2007/145535 in turn describes a pack wherein the semi-rigid sheet, comprising the barrier layer, is associated with a further flexible sheet turned outwards.
  • the semi-rigid sheet has a series of V or U-shaped cuts, which can be either through cuts or not, while the outer flexible sheet can be completely integral or also have a cut arranged in such a way as not to superimpose itself on that of the semi-rigid sheet.
  • the breakage of the outer flexible sheet occurs by effect of the sole mechanical action applied on same by the semi-rigid sheet following the breakage of the latter.
  • the cuts defined on the semi-rigid sheet open following the bending of the pack, defining two distinct portions that contact the upper flexible sheet and reciprocally move away as the pack is gradually bent.
  • Such two portions thus apply a “lever effect” on the upper flexible sheet, which increases along with the increase in distance between their fulcrum and the area of contact with the upper sheet itself.
  • the capacity of the semi-rigid support .to apply the force necessary to tear the above film depends on its flexural strength.
  • the pack referred to in WO 2007/145535 also has drawbacks. It does in fact necessarily require a much thicker semi-rigid sheet in order to permit applying enough mechanical force to cause the outer flexible sheet to break as well as the use of materials having well-defined rigidity specifications. Such thicknesses and such materials are expensive and this inevitably affects the end product. Furthermore, the extreme fragility of the semi-rigid sheet can give rise to the accidental breakage of same during the pack manufacture and distribution phase.
  • the conformation of the cut can be hazardous for the end user due to the sharp and in certain cases pointed tips that form as a result of pack breakage.
  • the document US 2010/155284 describes a sealed pack wherein the sheet of semi-rigid material has a pre-cut with at least one component transversal to the bending axis, in such a way that, following breakage, a lever effect is produced on the outermost layer so as to make its breakage easier.
  • the main aim of the present invention is to provide a single-dose pack which permits ensuring the breakage of all the layers that make up the semi-rigid sheet and, at the same time, ensures a seal such as to prevent any of the contained product from occasionally escaping.
  • an object of the present invention is to prevent damaging the barrier layer/s so as to maintain the integrity of the product contained in the pack.
  • One object of the present invention is to provide a single-dose pack which has smaller thickness than those of the packs of known type.
  • Yet another object is to provide a single-dose pack which has lower manufacturing costs and, therefore, a lower end-product cost, than the packs of known type, and which ensures, at the same time, the protection of the contained product from external contamination as well as being easy and ready to open.
  • Another object of the present invention is to provide a single-dose sealed pack with break opening that allows to overcome the mentioned drawbacks of the background art in the ambit of a simple, rational, easy, effective to use and low cost solution.
  • FIG. 1 is a section view of a pack according to the invention, in a first embodiment
  • FIG. 2 is a section view of a pack according to the invention, in a second embodiment
  • FIG. 3 is a section view of a pack according to the invention, in a third embodiment
  • FIG. 4 is a section view of a pack according to the invention, in a fourth embodiment
  • FIG. 5 is a plan view of the inner face of the semi-rigid sheet of a pack according to the invention, which represents the first cut made on it;
  • FIG. 6 is a plan view of the inner face of the semi-rigid sheet of a pack according to the invention, which represents an alternative embodiment of the first cut;
  • FIG. 7 is a plan view of the outer face of the semi-rigid sheet of a pack according to the invention, which represents the second cut made on it;
  • FIG. 8 is a plan view of the outer face of the semi-rigid sheet of a pack according to the invention, which represents an alternative embodiment of the second cut;
  • FIG. 9 is a plan view of the outer face of the semi-rigid sheet of a pack according to the invention, which represents an alternative embodiment of the second cut;
  • FIG. 10 is a plan view of the outer face of the semi-rigid sheet of a pack according to the invention, which represents the punches made on it.
  • the pack 1 comprises a first sheet 2 of semi-rigid plastic material and a second sheet 3 of flexible plastic material associated with the first sheet 2 , generally (but not exclusively) by means of hot sealing, to define a sealed containment chamber 4 for containing a dose of a liquid product.
  • the pack 1 has an elongated shape and a substantially rectangular conformation, thus having two median planes substantially perpendicular to each other, of which one longitudinal median plane and one transversal median plane.
  • the pack 1 can however be made in a variety of geometric shapes, the conformation in the illustrations being shown by way of example only.
  • the first sheet 2 comprises at least a bearing layer 6 and at least a barrier layer 7 associated with the bearing layer 6 and arranged towards the outside with respect to the chamber 4 . Both the bearing layer 6 and the barrier layer 7 have a relative thickness.
  • the bearing layer 6 is arranged on the side of the chamber 4 with respect to the barrier layer 7 which instead is arranged opposite the chamber itself with respect to the bearing layer 6 .
  • the bearing layer 6 is of the fragile type. In other words, the bearing layer 6 must be such as to break when undergoing bending.
  • the bearing layer 6 is e.g. made up of a material selected from the group comprising: polystyrene (PS), polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene (ABS), acrylonitrile-butadiene-styrene and glass fibers, amorphous polyethylene-terephthalate (APET), polythene (PE) or polypropylene (PP).
  • PS polystyrene
  • PVC polyvinyl chloride
  • ABS acrylonitrile-butadiene-styrene
  • APET acrylonitrile-butadiene-styrene and glass fibers
  • APET amorphous polyethylene-terephthalate
  • PE polythene
  • PP polypropylene
  • the bearing layer 6 generally has a thickness between 50 ⁇ m and 1000 ⁇ m, even though its having smaller or greater thicknesses at the extremes of such range cannot be ruled out.
  • the best bearing layer thickness must be from time to time calculated according to the specifications of the material of which it is made up and also according to the mechanical specifications of the barrier layer 7 , as will be described below in greater detail.
  • the barrier layer 7 is of the isotropic type, i.e., it has the same physical characteristics in all directions. In other words, the barrier layer 7 does not have a preferential orientation of the relative fibers.
  • the barrier layer 7 is e.g. made of Aluminum (Al) or Evoh, or of silicon oxide (SiOx) or aluminum oxide (Al2O3).
  • the barrier layer 7 has a thickness between 5 ⁇ m and 15 ⁇ m, preferably between 6 ⁇ m and 13 ⁇ m. The use cannot however be ruled out of smaller or greater thicknesses at the extremes of such ranges.
  • the type and thickness of the barrier layer 7 also considerably affect the thickness of the bearing layer 6 , inasmuch as the greater the elongation at break of the barrier layer 7 the greater the elongation must be which the bearing layer 6 must be able to apply on the barrier layer itself.
  • the bearing layer 6 and the barrier layer 7 must therefore be such that the elongation applicable by the thickness of the bearing layer 6 only on the barrier layer 7 , following the bending of the pack 1 , is greater than the elongation at break of the barrier layer itself.
  • the elongation at break is a property of the materials and is generally calculated by means of laboratory tests using methods known to the expert in the sector.
  • the maximum elongation applicable by the bearing layer 6 on the barrier layer 7 corresponds to the configuration wherein the opposite portions of the, first sheet 2 onto which a force is applied by the operator to flex the first sheet itself are brought into reciprocal contact. Very likely, in this condition, the breakage force relating to the bearing layer 6 has, given, its fragility, already been exceeded. It follows therefore that the bearing layer 6 is broken into two parts and its outer flaps are at maximum distance from one another, i.e., at double the thickness of the bearing layer itself.
  • the elongation at break of the barrier layer 7 must not therefore be more than double the thickness of the bearing layer 6 .
  • the barrier layer 7 in fact, being turned towards the extrados of the first sheet 2 is that which, according to the following formula, suffers the greatest elongation
  • R is the curvature radius of the neutral axis (expressed in radiants) and y is the distance of the fibers considered from the neutral axis itself and l is the length of the neutral axis.
  • This formula therefore defines the elongation (or shortening) deformation of the various fibers.
  • the bearing layer 6 of a semi-rigid sheet of polystyrene with thickness of around 400 ⁇ m and imagining, for simplicity, that the neutral axis lies substantially at half the thickness of the layer 6 , we shall have:
  • the breakage of the barrier layer 7 will occur for bending radius values of 2 mm or less, in the event of the percentage elongation ⁇ l % being 10%, and for values of 4 mm or less, in case of the percentage elongation ⁇ l % being 5%.
  • the bearing layer 6 and the barrier layer 7 must be such that the maximum tension that can be applied by the thickness of the bearing layer 6 on the barrier layer 7 must also be greater than the tensile strength ⁇ R of the barrier layer itself.
  • the tensile strength ⁇ R and the tension that can be applied by the bearing layer 6 must refer to a predefined direction and relate to the bending moment applied on the first sheet 2 . More precisely, depending on the axis around which the bending moment is applied, the direction of the traction force applied on the extrados of the first sheet 2 changes.
  • tensile strength (or breakage load) ⁇ R is meant the amount of tension beyond which the layer breaks. Such value, expressed in N/mm 2 , is generally calculated by means of laboratory tests using methods known to the expert in the sector.
  • the breakage load can e.g. be calculated by means of the method of analysis suggested by UNI-EN-ISO standards.
  • maximum tension applicable by the bearing layer 6 is meant the maximum traction stress which the bearing layer 6 , when deformed by bending, is able to apply on the barrier layer 7 .
  • the tensile strength (or breakage load) ⁇ f undergone by the fibers increases along with the distance from the neutral axis according to the following formula:
  • E is the elastic modulus of the material
  • R is the curvature radius of the neutral axis
  • y is the distance of the fibers considered from the neutral axis itself. It is therefore easy to appreciate how the fibers at the extrados are those which undergo the greatest stress.
  • the tension which can be applied by the bearing layer 6 increases in intensity as the first sheet 2 is gradually bent, inasmuch as the curvature of the first sheet itself increases and, therefore, the curvature radius R is reduced.
  • the maximum tension which can be applied by the bearing layer 6 corresponds therefore to the configuration wherein the opposite portions of the first sheet 2 on which a force is applied by the operator to bend the first sheet itself are brought into reciprocal contact.
  • the curvature radius R is equal to about half the thickness of the bearing layer 6 , inasmuch as the centre of rotation in practice corresponds to the meeting point of the bent inner faces of the bearing layer itself.
  • both the elongation and the effort applied at the extrados are also increased. This means that, by increasing the thickness of the bearing layer 6 , materials can be used for the barrier layer 7 with greater elongation at break and greater breakage load.
  • the barrier layer 7 has a tensile strength or an elongation at break below those applicable by the bearing layer 6 . In this condition, the barrier layer 7 breaks before the bearing layer 6 , applying to the latter, at the moment of its fracture, an additional and sudden stress that makes the breakage of the bearing layer itself easier.
  • the barrier layer 7 is made up of a sheet of aluminum about 9 ⁇ m (micron) thick and the bearing layer 6 of a sheet of semi-rigid polystyrene with a thickness of around 400 ⁇ m. It can also be imagined that the neutral axis lies substantially at half the thickness of the layer 6 , and the elongation at break is 10% (worsening condition). We shall therefore have:
  • the tensile strength ⁇ fa undergone by the barrier layer 7 is equal to:
  • the pack 1 then comprises at least a first cut 5 a defined on the first sheet 2 to guide the breakage of the first sheet itself so as to determine the formation of an opening to allow the product to come out.
  • the first cut 5 a has a substantially rectilinear individual section defining the bending line of the pack 1 .
  • the first cut 5 a is defined in correspondence to the median area of the first sheet 2 , and in particular in correspondence to its transversal median plane.
  • the first cut 5 a extends transversally to the longitudinal axis of the pack 1 and, therefore, also of the first sheet 2 .
  • the first cut 5 a has a depth such as to involve the bearing layer 6 but not the barrier layer 7 , which is integral and not perforated.
  • the first cut 5 a made on the bearing layer 6 causes the reduction of the curvature radius R, thus ensuring the easier breakage of the first sheet 2 .
  • E is the modulus of elasticity of the bearing layer 6
  • y the distance from the neutral axis and l the length of the first sheet 2 .
  • the first cut 5 a only involves the inner face of the bearing layer 6 , meaning that turned towards the chamber 4 .
  • the first cut 5 a can however involve both the inner face and the outer face of the bearing layer 6 , meaning that turned towards the barrier layer 7 .
  • the first cut 5 a thus defined is made before coupling the bearing layer 6 to the barrier layer 7 , in such a way as to maintain the integrity of the latter.
  • the first cut 5 a has a constant depth, though alternative embodiments cannot be ruled out wherein its depth is variable.
  • the pack 1 also comprises at least two further cuts 5 b, defined on the same face of the first sheet 2 on which is obtained the first cut 5 a, where such further cuts 5 b are arranged transversal with respect to the first cut 5 a and on opposite sides to this.
  • the further cuts 5 b can be of the open line type, which can be rectilinear, curvilinear or the like or, alternatively, shaped so as to define a closed profile, even though this last embodiment is more difficult to make.
  • the further cuts 5 b can be distanced from the extremities of the first cut 5 a or else be tangential to these.
  • the first sheet itself will be bent around the first cut so defined, and so the above-mentioned parameters (elongation and tension) must be referred to the bending moment applied around such bending line.
  • the first cut 5 a involves at least the bearing layer 6 .
  • the first sheet 2 only comprises the bearing layer 6 and the barrier layer 7 .
  • the bearing layer 6 and the barrier layer 7 define the inner face and the outer face respectively of the first sheet 2 .
  • the first cut 5 a only involves the bearing layer 6 .
  • the fact that on the bearing layer 6 both the first cut 5 a and the further cuts 5 b are defined, according to what has been described above, is particularly useful because, considering the bearing layer 6 and the barrier layer 7 are of the fragile type, the crack that develops following the bending of the pack 1 would tend to extend along their entire width.
  • the further cuts 5 b are therefore suitable for preventing that the extension of the opening that occurs following the bending of the pack 1 remains restricted to the first cut 5 a and, therefore, that the breakage does not extend along the entire width of the layers 6 and 7 .
  • the first sheet 2 also comprises a sealing layer 8 associated with the bearing layer 6 and turned towards the chamber 4 .
  • the bearing layer 6 is placed between the barrier layer 7 and the sealing layer 8 .
  • the sealing layer 8 and the barrier layer 7 define the inner face and the outer face respectively of the first sheet 2 .
  • the sealing layer 8 is made e.g. of a material selected from the group comprising: polyethylene (PE) and polypropylene (PP).
  • the sealing layer 8 has a thickness between 10 ⁇ m and 70 ⁇ m.
  • the sealing layer 8 is more ductile than the bearing layer 6 .
  • the second sheet 3 coupled to the sealing layer 8 also comprises a plurality of layers.
  • the second sheet 3 can comprise a layer of polyethylene (PE) or polypropylene (PP) coupled to a layer of metalized polyethylene terephthalate (PET) or can comprise a layer of polyethylene (PE) or polypropylene (PP) coupled to a layer of Aluminum (Al) and to a layer of polyethylene terephthalate (PET).
  • the first cut 5 a involves both the bearing layer 6 and the sealing layer 8 . Thanks to its greater ductility, during the bending of the pack 1 , the sealing layer 8 tends to only break in correspondence to the first cut 5 a, thus acting as a support for the bearing layer 6 and the barrier layer 7 and performing the function of control of the product exit section. For this reason, the presence of further cuts 5 b does not appear strictly necessary, even though the fact that these be also made in the presence of the sealing layer 8 cannot in any case be ruled out.
  • this second embodiment of the pack 1 is the following (proceeding from the inside towards the outside):
  • sealing layer in polythene (PE) or polypropylene (PP) with a thickness of 50 ⁇ m; bearing layer in polystyrene (PS) or acrylonitrile-butadiene-styrene (ABS) (with or without glass fibers) having a thickness between 200-400 ⁇ m;
  • PE polythene
  • PP polypropylene
  • PS polystyrene
  • ABS acrylonitrile-butadiene-styrene
  • barrier layer in aluminum having a thickness between 7-15 ⁇ m.
  • the first sheet 2 also comprises a protective layer 9 associated with the barrier layer 7 and turned outwards.
  • the barrier layer 7 is placed between the bearing layer 6 and the protective layer 9 .
  • the protective layer 9 is e.g. made from a material selected from the group comprising: polyethylene terephthalate (PET), lacquers and protective paints.
  • the protective layer 9 has a thickness between 0.1-20 ⁇ m (indicate possible protective layer thickness), preferably between 10-12 ⁇ m.
  • the first sheet 2 comprises, proceeding from the inside towards the outside of the pack 1 , the bearing layer 6 , the barrier layer 7 and the protective layer 9 .
  • the bearing layer 6 and the protective layer 9 define the inner face and the outer face respectively of the first sheet 2 .
  • An example of this third embodiment of the pack 1 is the following (proceeding from the inside towards the outside):
  • PS polystyrene
  • ABS acrylonitrile-butadiene-styrene
  • barrier layer in aluminum having a thickness between 7-15 ⁇ m
  • PET polyethylene terephthalate
  • the fourth embodiment instead is a combination of the second and third embodiment described above.
  • the first sheet 2 therefore comprises, proceeding from the inside towards the outside of the pack 1 , the sealing layer 8 , the bearing layer 6 , the barrier layer 7 and the protective layer 9 .
  • the first sheet 2 therefore comprises both the sealing layer 8 and the protective layer 9 arranged on opposite sides the one to the other and defining the inner face and the outer face respectively of the first sheet 2 .
  • PS polystyrene
  • ABS acrylonitrile-butadiene-styrene
  • barrier layer in aluminum having a thickness between 7-15 ⁇ m
  • PET polyethylene terephthalate
  • the protective layer 9 can be integral, i.e., not show any cut, or else a second cut can be defined on it.
  • the protective layer 9 has a lower elongation at break than the elongation which can be applied on it by the thickness of the layers underneath, i.e. by the unit composed of the barrier layer 7 , by the bearing layer 6 and, if any, by the sealing layer 8 .
  • Such condition permits guaranteeing that the protective layer 9 breaks at least in the limit condition wherein the opposite portions of the first sheet 2 are brought into contact following the bending of the first sheet itself.
  • the protective layer 9 also has a tensile strength ⁇ R below the maximum tension applicable to it by the thickness of the layers underneath.
  • At least a second cut 10 a can be defined on the protective layer 9 .
  • Such second cut 10 a can, e.g., be made by means of a laser beam suitably calibrated so that, once the protective layer 9 has been cut, it is reflected by the barrier layer in aluminum.
  • the second cut 10 a defined on the protective layer 9 is preferably arranged in correspondence to the first cut 5 a obtained on the inner face of the first sheet 2 .
  • the second cut 10 a can e.g. be superimposed on the first cut 5 a.
  • the protective layer 9 reduces the value of the elongation and of the breakage load at the extrados of the first sheet 2 except in correspondence to the second cut 10 a so defined.
  • a discontinuity is therefore defined along the outer surface of the first sheet 2 , which results in the energy being concentrated along the second cut 10 a and in the sooner breakage of the barrier layer 7 with respect to the bending angle of the first sheet itself.
  • the presence of the protective layer 9 in this case, increases the overall fragility of the first sheet 2 , irrespective of the fragility/ductility of the individually-considered protective layer.
  • the second cut 10 a can be defined in such a way as to interrupt itself in correspondence to the first cut 5 a.
  • the second cut 10 a can take on various configurations, e.g., it can be of the continuous type or, alternatively, it can comprise a plurality of separate sections 10 arranged in succession the one to the other along the bending axis of the pack 1 .
  • the sections 10 can be open, e.g., of the rectilinear, curvilinear type or the like or, alternatively, they can be shaped so as to define a closed profile, such as e.g. small substantially circular holes (as shown in FIG. 9 ).
  • the pack 1 can also have at least two further cuts 10 b, defined on the same layer on which is defined the second cut 10 a, which are transversal with respect to the second cut 10 a and are arranged on opposite sides of the second cut itself.
  • the second cut 10 a is preferably rectilinear, though alternative embodiments cannot be ruled out wherein it is of the curvilinear type or of the broken line type, while the further cuts 10 b can be of the rectilinear type or, alternatively, shaped so as to define a closed perimeter, even though this latter configuration is more difficult to make.
  • the further cuts 10 b can be distanced from the extremities of the first cut 5 a or else tangential with them.
  • the presence of the second cut 10 a and of the further cuts 10 b also permits making the protective layer 9 with materials having mechanical characteristics close to that of the barrier layer 7 , while at the same time ensuring a limited extension of the product flow section.
  • the pack 1 comprises the first cut 5 a and if necessary, depending on the type of material making up the layers 8 and 9 , also the further cuts 5 b. More in particular, the further cuts 5 b are not strictly necessary in all those cases wherein the layers 8 and/or 9 are made from a material with greater elongation at break than the layers 6 and 7 and which therefore tend to only break in correspondence to the first cut 5 a, thereby acting as support for the bearing layer 6 and the barrier layer 7 and performing the function of control of the product exit section.
  • the protective layer 9 has a pair of punches, identified in FIG. 10 by the reference number 11 , defined on opposite sides with respect to a median plane of the protective layer itself and in correspondence to another median plane transversal to the previous one. More in detail, the punches 11 are arranged on opposite sides of the longitudinal median plane of the first sheet 2 and in correspondence to the transversal median plane of the first sheet itself.
  • the punches 11 are defined in the proximity of the second cut 10 a, on opposite sides of same.
  • the function of the punches 11 is to avoid the product contained in the chamber 4 from concentrating in the central area of same, thus making it easier to bend the pack 1 along the first cut 5 a.
  • the method for choosing the thicknesses and the materials of each layer is of the empirical type, i.e., it envisages the execution of a series of tests aimed at checking the correct operation of the pack 1 .
  • the obtained pack 1 is bent and the correct opening of same is checked.
  • the barrier layer 7 does not fracture, it is possible to intervene in the following ways.
  • a first option consists in varying the thickness of the bearing layer 6 , increasing it so as to apply a greater elongation (and also a greater tension) on the barrier layer 7 , without changing the chosen materials and the chosen number of layers.
  • a second option is to introduce, if not already present, the sealing layer 8 (suitably cut), so as to increase the thickness of the layers arranged below the barrier layer 7 .
  • a third option is to introduce, if not already present, the protective layer 9 (and the relative second cut 10 a as well as, if necessary, the corresponding further cuts 10 b ), so as to create discontinuity on the outer surface of the first sheet 2 to make it easier to break the barrier layer 7 along the first cut 5 a.
  • a fourth option is to modify the materials used, e.g., by choosing, for the barrier layer 7 , a material having a lower elongation at break.
  • the thickness of the bearing layer 6 can be reduced and a check made to determine whether, this way, the barrier layer 7 continues to break following the bending of the first sheet 2 .
  • the thicknesses of the other layers can also be reduced, starting with those which are more expensive to make and always keeping within safety conditions such as to prevent the contamination of the product contained in pack 1 .
  • the operation of the present invention is the following.
  • the inner face of the first sheet 2 bends in correspondence to the first cut 5 a.
  • the mechanical stress acting on the first sheet 2 reaches maximum intensity in correspondence to its outer face, which can consist of the barrier layer 7 or of the protective layer 9 depending on the embodiment.
  • the barrier layer 7 fractures in correspondence to the first cut 5 a inasmuch as it is in correspondence to this that the greatest elongation and the greatest intensity of strength occur (the curvature radius of the neutral axis being less in this area).
  • a transit section is therefore defined of the liquid crossing the bearing layer 6 , the barrier layer 7 and, in the case of the second and fourth described embodiments, also the sealing layer 8 .
  • the further cuts 5 b can also be defined.
  • the conformation of the first cut 5 a generally varies according to whether or not the need exists to make sure that the breakage of the barrier layer 7 and of the bearing layer 6 , these being the most fragile layers, does not spread along their entire width.
  • the innovative layout of the barrier layer permits avoiding the pre-cutting of same, thus ensuring pack seal and, at the same time, ensuring breakage inasmuch as such layer undergoes greater elongation and greater mechanical stresses because it represents or is arranged in the proximity of the extrados of the first sheet.
  • the particular claimed arrangement of the layers making up the first sheet permits considerably reducing the thickness of the layers themselves compared to packs of known type, thus obtaining a big reduction in manufacturing costs and, therefore, a lower end-product cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Bag Frames (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
US14/646,362 2012-11-20 2013-11-20 Single-dose sealed pack with break opening Abandoned US20150307260A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMO2012A000284 2012-11-20
IT000284A ITMO20120284A1 (it) 2012-11-20 2012-11-20 Confezione sigillata monodose con apertura a rottura
PCT/IB2013/002591 WO2014080264A2 (fr) 2012-11-20 2013-11-20 Emballage hermétiquement scellé de dose unique à ouverture par rupture

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US (1) US20150307260A1 (fr)
EP (1) EP2928789A2 (fr)
JP (1) JP2015536883A (fr)
BR (1) BR112015011647A2 (fr)
IT (1) ITMO20120284A1 (fr)
WO (1) WO2014080264A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160159541A1 (en) * 2013-07-10 2016-06-09 Amcor Flexibles Gas and Light Proof, Double-Shell Blister Packs for Medicinal Contents
US20170043925A1 (en) * 2014-04-30 2017-02-16 Easysnap Technology S.R.L. Sealed single-dose break-open package suited to be opened vertically
US20200353709A1 (en) * 2018-01-18 2020-11-12 Easysnap Technology, S.r.l. Production Method for Producing A Sealed Break-Open Package and Corresponding Sealed Break-Open Package
US20210061508A1 (en) * 2018-01-09 2021-03-04 V-Shapes S.R.L. Apparatus and method for producing a sealed single-dose break-open package

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700002440A1 (it) * 2017-01-11 2018-07-11 Easysnap Tech S R L Confezione sigillata monodose con apertura a rottura per prodotti in polvere o in granuli
IT201900019854A1 (it) 2019-10-28 2021-04-28 Guala Pack Spa Confezione monouso con apertura a rottura
IT202000021802A1 (it) * 2020-09-16 2022-03-16 V Shapes S R L Confezione sigillata monodose con apertura a rottura con applicatore

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6085942A (en) * 1996-02-02 2000-07-11 Redmond; Sanford Coffee creamer and other cups and tubs
US20050205452A1 (en) * 2003-07-15 2005-09-22 Robert Lee Paste composition storage device and method
US20120018335A1 (en) * 2010-07-21 2012-01-26 Multivac Sepp Haggenmueller Gmbh & Co. Kg Packaging for a liquid, powdery or pasty product
US20120292340A1 (en) * 2011-05-16 2012-11-22 Andrea Nadon Condiment packet
US20150283029A1 (en) * 2014-04-02 2015-10-08 Jennifer L. Riis Child-resistant packaging

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236652A (en) * 1979-03-20 1980-12-02 American Can Company Dispenser package
US20050178086A1 (en) 2003-12-02 2005-08-18 Craig Bakken Dispensing package
NZ547925A (en) 2006-06-14 2007-11-30 Hugh Thomas Harry Davies Sachets and materials used in manufacture of sachets
EP2205505B1 (fr) 2007-09-24 2011-09-21 Diapack Limited Emballage scellé à ouverture par rupture pour dose unique
US8028837B2 (en) * 2008-12-18 2011-10-04 Kimberly-Clark Worldwide, Inc. Break-open package with shaped die cut for storing and dispensing substrates

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6085942A (en) * 1996-02-02 2000-07-11 Redmond; Sanford Coffee creamer and other cups and tubs
US20050205452A1 (en) * 2003-07-15 2005-09-22 Robert Lee Paste composition storage device and method
US20120018335A1 (en) * 2010-07-21 2012-01-26 Multivac Sepp Haggenmueller Gmbh & Co. Kg Packaging for a liquid, powdery or pasty product
US20120292340A1 (en) * 2011-05-16 2012-11-22 Andrea Nadon Condiment packet
US20150283029A1 (en) * 2014-04-02 2015-10-08 Jennifer L. Riis Child-resistant packaging

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160159541A1 (en) * 2013-07-10 2016-06-09 Amcor Flexibles Gas and Light Proof, Double-Shell Blister Packs for Medicinal Contents
US9988194B2 (en) * 2013-07-10 2018-06-05 Amcor Flexibles Gas and light proof, double-shell blister packs for medicinal contents
US20170043925A1 (en) * 2014-04-30 2017-02-16 Easysnap Technology S.R.L. Sealed single-dose break-open package suited to be opened vertically
US10131479B2 (en) * 2014-04-30 2018-11-20 Easysnap Technology S.R.L. Sealed single-dose break-open package suited to be opened vertically
US20210061508A1 (en) * 2018-01-09 2021-03-04 V-Shapes S.R.L. Apparatus and method for producing a sealed single-dose break-open package
US20200353709A1 (en) * 2018-01-18 2020-11-12 Easysnap Technology, S.r.l. Production Method for Producing A Sealed Break-Open Package and Corresponding Sealed Break-Open Package
US11813817B2 (en) * 2018-01-18 2023-11-14 Easysnap Technology S.R.L. Production method for producing a sealed break-open package and corresponding sealed break-open package

Also Published As

Publication number Publication date
WO2014080264A2 (fr) 2014-05-30
BR112015011647A2 (pt) 2017-07-11
ITMO20120284A1 (it) 2014-05-21
EP2928789A2 (fr) 2015-10-14
JP2015536883A (ja) 2015-12-24
WO2014080264A3 (fr) 2014-07-17

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