EP1765677B1 - Plastic bottle and process for affixing a shrinkable lable thereon - Google Patents
Plastic bottle and process for affixing a shrinkable lable thereon Download PDFInfo
- Publication number
- EP1765677B1 EP1765677B1 EP05752640A EP05752640A EP1765677B1 EP 1765677 B1 EP1765677 B1 EP 1765677B1 EP 05752640 A EP05752640 A EP 05752640A EP 05752640 A EP05752640 A EP 05752640A EP 1765677 B1 EP1765677 B1 EP 1765677B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bottle
- neck
- tapered part
- film
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 5
- 230000008569 process Effects 0.000 title claims description 5
- 229920006257 Heat-shrinkable film Polymers 0.000 claims description 4
- 239000002985 plastic film Substances 0.000 abstract description 2
- 229920006255 plastic film Polymers 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000012815 thermoplastic material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
-
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
-
- 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
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/08—Coverings or external coatings
- B65D23/0842—Sheets or tubes applied around the bottle with or without subsequent folding operations
- B65D23/0878—Shrunk on the bottle
-
- 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
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
- B65D2501/0018—Ribs
Definitions
- the present invention relates to a plastic bottle, suitable to be covered with a sheet of shrinkable plastic material, and to a process to cover said bottle.
- a bottle of the type is known from FR 2 839 041 A .
- the external agents that cause worsening in the taste and nutritional properties of the content are oxygen and light, both ultraviolet and visible; for example, foods such as milk are particularly susceptible to the action of light, which even in just two days causes deterioration of the proteins which imparts a typical disagreeable flavour.
- light especially at wavelengths ranging from 200 to 800 nm, causes the destruction of some vitamins typical of these foods.
- bottles are commonly made of thermoplastic materials (such as PVC and PET) covered with a heat-shrinkable plastic film.
- the film provides adequate barrier properties for gases such as oxygen and carbon dioxide and against physical agents such as ultraviolet and visible light. For example, it is often considered necessary to screen light with a wavelength ranging from 200 to 800 nm in particular.
- gases such as oxygen and carbon dioxide
- physical agents such as ultraviolet and visible light.
- Different types of film are used. These can be films with several layers, for example co-extruded, of different thermoplastic materials or of the same material treated in different ways, for example a layer of expanded material and one or two layers of non-expanded material. Often the outermost layer is printable: in fact, the covering can have the functions of a label.
- the covering film is shaped like a sleeve, for example by extrusion thereof directly in this shape or by joining two sides of a film in an appropriate way, for example by gluing or heat-sealing.
- a cylinder of this film is suitably positioned around the bottle, for a height adequate for the covering to be obtained, for example by gluing the two edges of a film surrounding the body of the bottle.
- the bottle has a lower part, also called body, with a more or less constant section except for projections or grooves, and an upper part which tapers towards the neck of the bottle.
- the shrinkable film can also cover this part, providing the height of the film is adequate.
- heat causes the film to shrink, adapting to the surface of the bottle, comprising the upper tapered part, if required.
- heat for example hot air can be blown, for example at 250°C for 5 seconds, while the bottle is made to rotate.
- Some plastic bottles have a body with a section which is not round, for example a quadrilateral section, with rounded edges; this type of bottle is appreciated, as well as for aesthetic reasons, also due to the fact that more bottles can be stored in a smaller space compared to bottles with a round section, containing the same volume of liquid.
- the tapered part also usually has a similar section to the body and must be connected to the cylindrical neck of the bottle in a suitable way.
- a problem with this type of bottle lies in the fact that the tapered part and the connection area are usually critical areas as regards adhesion of the shrinkable film. This is because, in the direction along the longitudinal axis of the bottle, usually an axis of symmetry, the length to be covered differs at the edges of the quadrilateral section with respect to the centre of the sides. This determines poor adhesion of the film in the part below the neck of the bottle, where shrinkage must be maximum, causing non-uniform thickness of the covering and the possible formation of creases.
- the object of the present invention is to identify forms of plastic bottles having a body with a section which is not round, for example triangular or quadrilateral, which allows good adhesion of the covering also on the tapered part and also extending in proximity to the cylindrical neck, that is, in the areas above the body of the bottle.
- said body has an essentially parallelepiped form, therefore with a base of a form which is not round. It can be a parallelepiped with an essentially polygonal base, preferably quadrilateral, more preferably square and preferably with rounded edges.
- the tapered part is a convex surface. It is preferably a surface of revolution about the longitudinal axis, or it can have a cross section similar in form to the cross section of the body, but less accentuated, at said boundary.
- the invention therefore relates to a bottle, as described above, which allows perfect covering thereof with a heat-shrinkable film with uniform thickness and without the possible formation of creases in said film, and to a process to cover said bottle.
- Figure 1 schematically represents a front view of a bottle according to the present invention.
- Figure 2 schematically represents a view rotated through 45° with respect to the longitudinal axis of the bottle in Figure 1 .
- Figure 3 schematically represents a longitudinal sectional view of the detail in
- Figure 4 schematically represents a plan view of a bottle, sectioned at the cylindrical neck below the finish, according to a different aspect of the invention.
- Figure 5 schematically represents a bottom view of a bottle according to the present invention.
- Figure 1 shows a front view of a bottle according to the present invention. It has a longitudinal axis 1, which, preferably, is essentially an axis of symmetry of the bottle; in the present description, unless otherwise specified, cross section is intended as a section according to a plane perpendicular to said axis 1, while longitudinal section is a section according to a plane containing said axis 1.
- the bottle comprises a body 2, as said with a cross section which is not round, in the case specified essentially squared (a certain convexity of the sides towards the outside is possible), with rounded edges.
- the body 2 extends between a base 3, which closes it at the bottom and has a form and characteristics which can be of a known type, and the tapered part 5 from which it is delimited by the boundary 4, which can, for example, be a more or less rounded edge, a projection or a groove.
- the cross section of the body 2 is preferably essentially constant along the axis 1. It is understood that in any case there may be narrowings or widenings due, for example, to grooves or projections, such as the grooves 6, or other elements, such as contoured areas to facilitate grip, writing or decorative elements, which are commonly found on plastic bottles.
- the bottle has an essentially cylindrical neck 7, at the end of which is an opening 8 to gain access to the content.
- There may be other structures such as the finish 9, a more or less flanged shaped annular projection which is usually provided around the neck of many types of plastic bottle, the thread 10 to allow screwing of a cap, and any others deemed suitable.
- the tapered part 5 starts from the boundary 4, between the body 2 and the neck 7.
- this tapered part 5 has the form of a surface of revolution. This determines the typical course of the boundary 4 between the tapered part and the body 2, with the convexities 11 facing upward in a longitudinal direction, namely towards the end of the bottle with the neck 7, where the wall of the bottle is at a minimum distance from the axis 1, that is, in the case of a body 2 with a polygonal section, in the middle of the sides, and the convexities 12 facing downward, that is towards the base 3 of the bottle, where the wall of the bottle is at the maximum distance from the axis 1, that is at the edges 13 of the body 2.
- the convexities 12 can be shaped as a consequence of the radius of curvature of the edges 13 which are preferably rounded; they will tend to become cusps if the edges 13 are sharp.
- the tapered part 5 is not a surface of revolution or at least not for its entire extension.
- it can preferably have a cross section, at the area involved by the boundary 4, similar to the cross section of the body 2, for example essentially polygonal, in particular quadrilateral, with convex sides towards the outside and with rounded edges, although less accentuated, which means curvature of the sides, convex towards the outside, more marked and edges more rounded; this produces an intermediate form between the form of the cross section of the body 2 and a circular form.
- the tapered part 5 can have an increasing inclination with respect to the axis 1 as it approaches the neck 7, that is being essentially convex, naturally with the exception of grooves or other elements as already mentioned for the body 2.
- a concave and rounded connection area 15 between the neck 7 and the tapered part 5, is a concave and rounded connection area 15, with a radius of curvature R1.
- Particularly advantageous results have been obtained with particular types of covering films for values of the radius of curvature R1 that are greater than zero and less than or equal to 8 mm.
- a truncated cone shaped part 17 is produced in the variant of bottle in which the tapered part 5 has a form which is not a surface of revolution.
- the truncated cone shaped part 17 is interposed between the tapered part 5 and the neck 7, or between the tapered part and the area 15.
- Figure 4 represents a top view of a bottle with the tapered part 5 with a cross section similar to the section of the body 2, as described above.
- the lower limit of the truncated cone shaped part 17 is indicated with the dashed line 16. It is observed that it can also have a form similar to the cross section of the tapered part 5, to allow connection.
- said lower limit will have a maximum width D3 and a minimum width D4.
- the following relation will be valid: 0.6 ⁇ (D2-D4)/(D1-D3) ⁇ 1.
- The-truncated cone shaped part 17 is preferably inclined so that a plane tangent thereto forms with the axis 1 an angle ⁇ ranging from 30° to 90°. Moreover, with coverings suitable to withstand shrinkages from 20% to 60% of the diameter, values are preferred in which: 0.1 ⁇ (D1-D3)/D1 ⁇ 0.8 and 0.1 ⁇ (D2-D4)/D2 ⁇ 0.8.
- the point of maximum inclination of the tapered part 5 is immediately below the neck 7, or the area 15 if present, and is such that the plane tangent in that point, as shown in Figure 3 , forms an angle ⁇ with the axis 1 ranging from 30° to 90°.
- the tapered part 5 has a longitudinal section with a radius of curvature R2 below 15 mm, to obtain, in a very restricted area below the neck 7, a variation in the profile of the wall of the bottle from concave to convex, through a point of inflection coinciding with said point of maximum inclination, so as to essentially define an S-shape and therefore form a sort of "shoulder", which reduces the risk of the covering slipping, in consideration of the fact that there must be maximum shrinkage in this area.
- the external form of the bottle is improved preventing the formation of creases and wrinkles in the covering in the area below the neck 7.
- the bottle can be produced in any thermoplastic material considered suitable, such as PVC, PET and the like, according to any known art, such as blow moulding.
- the invention also relates to a bottle covered with a heat-shrinkable film.
- the covering can include the body 2 and preferably all or part of the tapered part 5.
- the tapered part 5, as described above, allows high-quality and uniform adhesion of the covering thereon, also for bottles the body of which is not circular, solving the problems indicated above.
- the presence of the truncated cone shaped part 17 and/or the "shoulder" formed by the accentuated curvature of radius R2 below the neck 7, moreover, has the advantage of providing fixing for the covering if it extends up to the neck 7, preventing slipping or non-uniform tightness even in this critical area.
- the covering can extend from the base 3 or in any case involve part of the rounded connection area 18 which joins the base 3 to the body 2, providing improved fixing, as is usually the case.
- the covering can be made of a known thermoplastic material.
- it can be constituted by a film comprising several layers, one of which is expanded: plastic materials which can be used can be polyolefins, polystyrenes and the like, with additives and pigments to provide barrier properties against light and atmospheric agents.
- plastic materials which can be used can be polyolefins, polystyrenes and the like, with additives and pigments to provide barrier properties against light and atmospheric agents.
- a film with three co-extruded layers can be used, wherein the intermediate layer is expanded polystyrene and the other layers are non-expanded polystyrene, the innermost of which is black and the outermost of which is printable.
- the film can, for example, have a thickness of around 120 ⁇ m, with the inner expanded layer having a thickness of around 100 ⁇ m.
- the film can be wound around the bottle and glued or sealed by two edges, to create a cylinder around the bottle, coaxial therewith for an adequate height. It is shrunk in a known way, for example using hot air. It is also possible to start with a cylinder of film pre-formed by extrusion.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Closures For Containers (AREA)
Abstract
Description
- The present invention relates to a plastic bottle, suitable to be covered with a sheet of shrinkable plastic material, and to a process to cover said bottle. A bottle of the type is known from
FR 2 839 041 A - A problem occurring in the field of containers for foods, and more particularly in the plastic bottle field, is how to protect the content from external agents, as well as from the loss of components through the walls of the bottle, for example carbon dioxide in carbonated drinks. Among the external agents that cause worsening in the taste and nutritional properties of the content are oxygen and light, both ultraviolet and visible; for example, foods such as milk are particularly susceptible to the action of light, which even in just two days causes deterioration of the proteins which imparts a typical disagreeable flavour. Moreover, light, especially at wavelengths ranging from 200 to 800 nm, causes the destruction of some vitamins typical of these foods. For this reason bottles are commonly made of thermoplastic materials (such as PVC and PET) covered with a heat-shrinkable plastic film. The film provides adequate barrier properties for gases such as oxygen and carbon dioxide and against physical agents such as ultraviolet and visible light. For example, it is often considered necessary to screen light with a wavelength ranging from 200 to 800 nm in particular. Different types of film are used. These can be films with several layers, for example co-extruded, of different thermoplastic materials or of the same material treated in different ways, for example a layer of expanded material and one or two layers of non-expanded material. Often the outermost layer is printable: in fact, the covering can have the functions of a label.
- The covering film is shaped like a sleeve, for example by extrusion thereof directly in this shape or by joining two sides of a film in an appropriate way, for example by gluing or heat-sealing. A cylinder of this film is suitably positioned around the bottle, for a height adequate for the covering to be obtained, for example by gluing the two edges of a film surrounding the body of the bottle. Usually, the bottle has a lower part, also called body, with a more or less constant section except for projections or grooves, and an upper part which tapers towards the neck of the bottle. The shrinkable film can also cover this part, providing the height of the film is adequate. Application of heat causes the film to shrink, adapting to the surface of the bottle, comprising the upper tapered part, if required. There are different ways of applying heat, for example hot air can be blown, for example at 250°C for 5 seconds, while the bottle is made to rotate.
- Some plastic bottles have a body with a section which is not round, for example a quadrilateral section, with rounded edges; this type of bottle is appreciated, as well as for aesthetic reasons, also due to the fact that more bottles can be stored in a smaller space compared to bottles with a round section, containing the same volume of liquid. In this case, the tapered part also usually has a similar section to the body and must be connected to the cylindrical neck of the bottle in a suitable way.
- A problem with this type of bottle lies in the fact that the tapered part and the connection area are usually critical areas as regards adhesion of the shrinkable film. This is because, in the direction along the longitudinal axis of the bottle, usually an axis of symmetry, the length to be covered differs at the edges of the quadrilateral section with respect to the centre of the sides. This determines poor adhesion of the film in the part below the neck of the bottle, where shrinkage must be maximum, causing non-uniform thickness of the covering and the possible formation of creases.
- Therefore, the object of the present invention is to identify forms of plastic bottles having a body with a section which is not round, for example triangular or quadrilateral, which allows good adhesion of the covering also on the tapered part and also extending in proximity to the cylindrical neck, that is, in the areas above the body of the bottle.
- The problem set forth above has been solved, according to the present invention, by means of a plastic bottle as defined by
claim 1. - Preferably said body has an essentially parallelepiped form, therefore with a base of a form which is not round. It can be a parallelepiped with an essentially polygonal base, preferably quadrilateral, more preferably square and preferably with rounded edges.
- According to a preferred aspect, the tapered part is a convex surface. It is preferably a surface of revolution about the longitudinal axis, or it can have a cross section similar in form to the cross section of the body, but less accentuated, at said boundary.
- The invention therefore relates to a bottle, as described above, which allows perfect covering thereof with a heat-shrinkable film with uniform thickness and without the possible formation of creases in said film, and to a process to cover said bottle.
-
Figure 1 schematically represents a front view of a bottle according to the present invention. -
Figure 2 schematically represents a view rotated through 45° with respect to the longitudinal axis of the bottle inFigure 1 . -
Figure 3 schematically represents a longitudinal sectional view of the detail in -
Figure 2 enclosed in the circle A. -
Figure 4 schematically represents a plan view of a bottle, sectioned at the cylindrical neck below the finish, according to a different aspect of the invention. -
Figure 5 schematically represents a bottom view of a bottle according to the present invention. -
Figure 1 shows a front view of a bottle according to the present invention. It has alongitudinal axis 1, which, preferably, is essentially an axis of symmetry of the bottle; in the present description, unless otherwise specified, cross section is intended as a section according to a plane perpendicular to saidaxis 1, while longitudinal section is a section according to a plane containingsaid axis 1. - The bottle comprises a
body 2, as said with a cross section which is not round, in the case specified essentially squared (a certain convexity of the sides towards the outside is possible), with rounded edges. This can be appreciated by comparingFigure 1 withFigure 2 , where rotation through 45° makes it possible to observe the maximum width D1 of thebody 2, while inFigure 1 the minimum width D2 is shown. Thebody 2 extends between abase 3, which closes it at the bottom and has a form and characteristics which can be of a known type, and thetapered part 5 from which it is delimited by theboundary 4, which can, for example, be a more or less rounded edge, a projection or a groove. The cross section of thebody 2 is preferably essentially constant along theaxis 1. It is understood that in any case there may be narrowings or widenings due, for example, to grooves or projections, such as the grooves 6, or other elements, such as contoured areas to facilitate grip, writing or decorative elements, which are commonly found on plastic bottles. - The bottle has an essentially
cylindrical neck 7, at the end of which is anopening 8 to gain access to the content. There may be other structures such as thefinish 9, a more or less flanged shaped annular projection which is usually provided around the neck of many types of plastic bottle, thethread 10 to allow screwing of a cap, and any others deemed suitable. - The
tapered part 5 starts from theboundary 4, between thebody 2 and theneck 7. - According to a preferred aspect, this
tapered part 5 has the form of a surface of revolution. This determines the typical course of theboundary 4 between the tapered part and thebody 2, with theconvexities 11 facing upward in a longitudinal direction, namely towards the end of the bottle with theneck 7, where the wall of the bottle is at a minimum distance from theaxis 1, that is, in the case of abody 2 with a polygonal section, in the middle of the sides, and theconvexities 12 facing downward, that is towards thebase 3 of the bottle, where the wall of the bottle is at the maximum distance from theaxis 1, that is at theedges 13 of thebody 2. Theconvexities 12 can be shaped as a consequence of the radius of curvature of theedges 13 which are preferably rounded; they will tend to become cusps if theedges 13 are sharp. - According to another aspect of the invention it is possible that the
tapered part 5 is not a surface of revolution or at least not for its entire extension. In this case, it can preferably have a cross section, at the area involved by theboundary 4, similar to the cross section of thebody 2, for example essentially polygonal, in particular quadrilateral, with convex sides towards the outside and with rounded edges, although less accentuated, which means curvature of the sides, convex towards the outside, more marked and edges more rounded; this produces an intermediate form between the form of the cross section of thebody 2 and a circular form. This again determines a course of theboundary 4 as described above, but less accentuated than in the case of atapered part 5 having the form of a surface of revolution. Thetapered part 5 can have an increasing inclination with respect to theaxis 1 as it approaches theneck 7, that is being essentially convex, naturally with the exception of grooves or other elements as already mentioned for thebody 2. - Advantageously, between the
neck 7 and thetapered part 5, is a concave androunded connection area 15, with a radius of curvature R1. Particularly advantageous results have been obtained with particular types of covering films for values of the radius of curvature R1 that are greater than zero and less than or equal to 8 mm. - Preferably, a truncated cone shaped
part 17 is produced in the variant of bottle in which thetapered part 5 has a form which is not a surface of revolution. The truncated cone shapedpart 17 is interposed between thetapered part 5 and theneck 7, or between the tapered part and thearea 15. -
Figure 4 represents a top view of a bottle with thetapered part 5 with a cross section similar to the section of thebody 2, as described above. The lower limit of the truncated cone shapedpart 17 is indicated with thedashed line 16. It is observed that it can also have a form similar to the cross section of thetapered part 5, to allow connection. In particular, said lower limit will have a maximum width D3 and a minimum width D4. Preferably, the following relation will be valid: 0.6 ≤ (D2-D4)/(D1-D3)≤1. - The-truncated cone shaped
part 17 is preferably inclined so that a plane tangent thereto forms with theaxis 1 an angle α ranging from 30° to 90°. Moreover, with coverings suitable to withstand shrinkages from 20% to 60% of the diameter, values are preferred in which: 0.1≦(D1-D3)/D1≦0.8 and 0.1≦(D2-D4)/D2≦0.8. - In the case in which the
tapered part 5 is a surface of revolution, it is possible that D3=D4. This is also possible in the case in which a regular truncated cone shaped part, with a circumference as base, is present. - In an advantageous variant, the point of maximum inclination of the
tapered part 5 is immediately below theneck 7, or thearea 15 if present, and is such that the plane tangent in that point, as shown inFigure 3 , forms an angle α with theaxis 1 ranging from 30° to 90°. - If the covering is to be applied up to the
neck 7, immediately below this point of maximum inclination, thetapered part 5 has a longitudinal section with a radius of curvature R2 below 15 mm, to obtain, in a very restricted area below theneck 7, a variation in the profile of the wall of the bottle from concave to convex, through a point of inflection coinciding with said point of maximum inclination, so as to essentially define an S-shape and therefore form a sort of "shoulder", which reduces the risk of the covering slipping, in consideration of the fact that there must be maximum shrinkage in this area. - With all the modalities described above the external form of the bottle is improved preventing the formation of creases and wrinkles in the covering in the area below the
neck 7. - The bottle can be produced in any thermoplastic material considered suitable, such as PVC, PET and the like, according to any known art, such as blow moulding.
- The invention also relates to a bottle covered with a heat-shrinkable film. The covering can include the
body 2 and preferably all or part of thetapered part 5. Thetapered part 5, as described above, allows high-quality and uniform adhesion of the covering thereon, also for bottles the body of which is not circular, solving the problems indicated above. The presence of the truncated cone shapedpart 17 and/or the "shoulder" formed by the accentuated curvature of radius R2 below theneck 7, moreover, has the advantage of providing fixing for the covering if it extends up to theneck 7, preventing slipping or non-uniform tightness even in this critical area. - The covering can extend from the
base 3 or in any case involve part of therounded connection area 18 which joins thebase 3 to thebody 2, providing improved fixing, as is usually the case. - The covering can be made of a known thermoplastic material. For example, it can be constituted by a film comprising several layers, one of which is expanded: plastic materials which can be used can be polyolefins, polystyrenes and the like, with additives and pigments to provide barrier properties against light and atmospheric agents. Purely by way of example, a film with three co-extruded layers can be used, wherein the intermediate layer is expanded polystyrene and the other layers are non-expanded polystyrene, the innermost of which is black and the outermost of which is printable. The film can, for example, have a thickness of around 120 µm, with the inner expanded layer having a thickness of around 100 µm. The film can be wound around the bottle and glued or sealed by two edges, to create a cylinder around the bottle, coaxial therewith for an adequate height. It is shrunk in a known way, for example using hot air. It is also possible to start with a cylinder of film pre-formed by extrusion.
- Those skilled in the art can easily make the choice of materials to employ to produce the bottle and the covering, and also of the process conditions.
Claims (14)
- Plastic bottle having a longitudinal axis (1), a body (2), a cross section substantially polygonal with three or four sides, a neck (7) essentially cylindrical in form, a tapered part (5) between the body (2) and the neck (7), and a boundary (4) between said body (2) and the tapered part (5) having convexities (11) facing in a longitudinal direction towards said neck (7) in the points in which it is at a minimum distance from said longitudinal axis (1), and convexities (12) facing in the opposite direction in the points in which it is at a maximum distance from said longitudinal axis (1), characterized in that immediately below the neck (7), or immediately below a concave and rounded connection area (15) connecting the neck (7) and the tapered part (5), said tapered part (5) has a portion with convex curvature with radius of curvature (R2) below 15 mm.
- Bottle as claimed in claim 1, wherein said body (2) has rounded edges (13).
- Bottle as claimed in any of the previous claims, wherein said tapered part (5) has the form of a surface of revolution, at said boundary (4).
- Bottle as claimed in claim 1 or 2, wherein said tapered part (5) has a cross section, at said boundary (4), with a form corresponding to the cross section of said body (2), but less accentuated.
- Bottle as claimed in any of the previous claims wherein said tapered part (5) is ogival.
- Bottle as claimed in claim 5, wherein said tapered part (5) comprises a truncated cone shaped part (17) in proximity to said neck (7).
- Bottle as claimed in claim 6, wherein said truncated cone shaped part (17) is inclined so that a plane tangent thereto forms with said longitudinal axis (1) an angle ranging from 30° to 90°.
- Bottle as claimed in claim 6 or 7, wherein said truncated cone shaped part (17) has a maximum width D3 and a minimum width D4 in which 0.6≦(D2-D4)/(D1-D3)≦1, where D1 is the maximum width and D2 the minimum width of said body (2).
- Bottle as claimed in any of claims 1 to 5, wherein the maximum inclination of the ogival part (5) is such that a plane tangent in the point of maximum inclination forms with said longitudinal axis (1) an angle ranging from 30° to 90°.
- Bottle as claimed in any of the previous claims wherein immediately below the neck (7) said tapered part (5) is connected to the neck by a portion (15) with concave curvature with radius of curvature (R1) greater than zero and less than or equal to 8 mm.
- Bottle as claimed in any of the previous claims wherein a covering with a heat-shrinkable film is provided.
- Bottle as claimed in claim 11, wherein said covering with said film includes at least a portion of said tapered part (5).
- Bottle as claimed in claim 12, wherein it is covered with said film up to the neck (7).
- Process to cover a plastic bottle comprising the steps of:positioning a heat-shrinkable film around a bottle as claimed in any of claims 1 to 10;causing shrinkage of the film by applying heat, so that it adheres to the bottle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000294A ITRM20040294A1 (en) | 2004-06-16 | 2004-06-16 | PLASTIC BOTTLE AND PROCESS FOR PLACING A RESTRINGENT LABEL ON IT. |
PCT/EP2005/052799 WO2005123518A1 (en) | 2004-06-16 | 2005-06-16 | Plastic bottle and process for affixing a shrinkable lable thereon |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1765677A1 EP1765677A1 (en) | 2007-03-28 |
EP1765677B1 true EP1765677B1 (en) | 2008-12-24 |
Family
ID=34956414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05752640A Not-in-force EP1765677B1 (en) | 2004-06-16 | 2005-06-16 | Plastic bottle and process for affixing a shrinkable lable thereon |
Country Status (10)
Country | Link |
---|---|
US (1) | US20080047923A1 (en) |
EP (1) | EP1765677B1 (en) |
JP (1) | JP2008502542A (en) |
CN (1) | CN1968855A (en) |
AT (1) | ATE418499T1 (en) |
CA (1) | CA2569812A1 (en) |
DE (1) | DE602005011973D1 (en) |
IT (1) | ITRM20040294A1 (en) |
RU (1) | RU2007101369A (en) |
WO (1) | WO2005123518A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008057402A1 (en) * | 2008-11-14 | 2010-05-20 | Krones Ag | Shrinkable label and method for labeling containers |
IT1399272B1 (en) * | 2010-04-06 | 2013-04-11 | Soremartec Sa | "PROCEDURE FOR REALIZING CONTAINERS AND ITS CONTAINER" |
FR2961180B1 (en) * | 2010-06-11 | 2013-06-07 | Sidel Participations | CONTAINER COMPRISING A VOUTE RIB BOTTOM |
EP2615925A4 (en) * | 2010-09-17 | 2014-04-02 | Nestec Sa | Container for retention of shrink wrap |
MY163563A (en) * | 2010-11-18 | 2017-09-29 | Kao Corp | Labeled container |
JP6044210B2 (en) * | 2012-09-12 | 2016-12-14 | 東洋製罐株式会社 | Plastic bottle |
USD741186S1 (en) * | 2014-04-24 | 2015-10-20 | Societe Des Produits Nestle Sa | Plastic container |
USD756233S1 (en) * | 2014-08-13 | 2016-05-17 | Quimica Goncal S.A. De C.V. | Twist top pet bottle for softener |
CA3210406A1 (en) | 2014-12-08 | 2016-06-16 | Dai Nippon Printing Co., Ltd. | Composite preform, composite container, composite preform, plastic member, and method for producing composite container |
USD802425S1 (en) * | 2015-11-09 | 2017-11-14 | Cj Cheiljedang Corp. | Bottle |
JP2017114544A (en) * | 2015-12-25 | 2017-06-29 | アサヒ飲料株式会社 | Plastic bottle and beverage product |
USD802424S1 (en) * | 2016-01-13 | 2017-11-14 | Cj Cheiljedang Corp. | Bottle |
JP6288223B2 (en) * | 2016-11-30 | 2018-03-07 | 大日本印刷株式会社 | Plastic bottle and filling body |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4248030A (en) * | 1979-05-04 | 1981-02-03 | Owens-Illinois, Inc. | Method for assembling plastic sleeve preforms and containers |
USD277459S (en) * | 1982-11-26 | 1985-02-05 | Smithkline Beckman Corporation | Bottle cap |
FR2576283B1 (en) * | 1985-01-18 | 1989-10-13 | Applic Plastiq Ste Bourgui | PLASTIC BOTTLE |
JP2737865B2 (en) * | 1993-04-06 | 1998-04-08 | 株式会社吉野工業所 | Synthetic resin bottle |
JP3388885B2 (en) * | 1994-07-04 | 2003-03-24 | 株式会社吉野工業所 | Cylindrical container |
US5605230A (en) * | 1994-10-11 | 1997-02-25 | Elr, Inc. | Sealed label having anti-counterfeit construction |
USD387278S (en) * | 1995-10-03 | 1997-12-09 | The Coca-Cola Company | Bottle |
US6105800A (en) * | 1997-10-10 | 2000-08-22 | Owens-Brockway Plastic Products Inc. | Blown plastic containers with threads |
USD457437S1 (en) * | 1999-11-02 | 2002-05-21 | The Coca-Cola Company | Bottle with closure |
USD480974S1 (en) * | 2000-09-14 | 2003-10-21 | Captive Plastics, Inc. | Container |
USD468212S1 (en) * | 2001-06-22 | 2003-01-07 | Tropicana Products, Inc. | Beverage container |
FR2839041B1 (en) * | 2002-04-24 | 2004-07-23 | Evian Eaux Min | CONTAINER HAVING AT LEAST ONE DEFORMABLE GRIPPING AREA |
-
2004
- 2004-06-16 IT IT000294A patent/ITRM20040294A1/en unknown
-
2005
- 2005-06-16 US US11/629,587 patent/US20080047923A1/en not_active Abandoned
- 2005-06-16 DE DE602005011973T patent/DE602005011973D1/en not_active Expired - Fee Related
- 2005-06-16 CN CNA2005800197220A patent/CN1968855A/en active Pending
- 2005-06-16 JP JP2007515961A patent/JP2008502542A/en active Pending
- 2005-06-16 RU RU2007101369/12A patent/RU2007101369A/en not_active Application Discontinuation
- 2005-06-16 AT AT05752640T patent/ATE418499T1/en not_active IP Right Cessation
- 2005-06-16 WO PCT/EP2005/052799 patent/WO2005123518A1/en active Application Filing
- 2005-06-16 EP EP05752640A patent/EP1765677B1/en not_active Not-in-force
- 2005-06-16 CA CA002569812A patent/CA2569812A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20080047923A1 (en) | 2008-02-28 |
JP2008502542A (en) | 2008-01-31 |
RU2007101369A (en) | 2008-07-27 |
CN1968855A (en) | 2007-05-23 |
ATE418499T1 (en) | 2009-01-15 |
DE602005011973D1 (en) | 2009-02-05 |
ITRM20040294A1 (en) | 2004-09-16 |
EP1765677A1 (en) | 2007-03-28 |
WO2005123518A1 (en) | 2005-12-29 |
CA2569812A1 (en) | 2005-12-29 |
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