CA2047051A1 - Tubular container, particularly for food products - Google Patents
Tubular container, particularly for food productsInfo
- Publication number
- CA2047051A1 CA2047051A1 CA002047051A CA2047051A CA2047051A1 CA 2047051 A1 CA2047051 A1 CA 2047051A1 CA 002047051 A CA002047051 A CA 002047051A CA 2047051 A CA2047051 A CA 2047051A CA 2047051 A1 CA2047051 A1 CA 2047051A1
- Authority
- CA
- Canada
- Prior art keywords
- strip
- adhesive material
- cold
- contact
- edges
- 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.)
- Abandoned
Links
- 235000013305 food Nutrition 0.000 title claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 22
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 15
- 238000003466 welding Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/66—Inserted or applied tearing-strings or like flexible elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
- B65D75/06—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes
- B65D75/12—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes with the ends of the tube closed by flattening and heat-sealing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
TUBULAR CONTAINER, PARTICULARLY FOR FOOD PRODUCTS
ABSTRACT OF THE DISCLOSURE
Tubular container obtained from a sheet which has, on its inner surface, in contact with a product to be wrapped, two longitudinal bands which are coated by a layer of cold-adhesive; the two longitudinal bands are glued to one another with the interposition of an end portion of a tear-strip, the opposite surfaces whereof are coated by respective layers of cold-adhesive.
ABSTRACT OF THE DISCLOSURE
Tubular container obtained from a sheet which has, on its inner surface, in contact with a product to be wrapped, two longitudinal bands which are coated by a layer of cold-adhesive; the two longitudinal bands are glued to one another with the interposition of an end portion of a tear-strip, the opposite surfaces whereof are coated by respective layers of cold-adhesive.
Description
ri ~
The present invention relates to a tubular container particularly for food products.
In the field of food products it is known to use, especially for packaging products which have a generally 5 parallelepipedal shape, so-called tubular wrappings, which are manufactured starting from a continuous band, one surface of which, hereinafter indicated as "inner surface", is suitable for making contact with the products to be wrapped and has two peripheral longitudinal regions covered 10 by respective layers of heat-weldable adhesive material.
Generally, said products are packaged by arranging them in succession in contact witb the inner surface of the band, which is then folded transversely until the layers of adhesive material of said two peripheral longitudinal 15 regions are moved into mutual contact so as to define, once they are subjected to a heat-welding operation, a continuous tubular container which is laterally provided with a flap which is constituted by the mutually welded opposite longitudinal edges of the band.
Said continuous tubular container is subsequently cut in portions which are welded at their ends and have a preset length; each portion defines a tubular fluid-tight wrapping for a related product.
For many food products packaged in the above described 25 manner it is necessary to produce said wrappings so that they are particularly easy to o~en and so that their opening does not entail the complete destruction of said wrappings, a part of which must remain preferably intact and protect the related products until tbey are eaten.
: .
- : :
~d ~ C,i ~
This need is normally met by transversely applying, on each wrapping, a tear-stxip which allows to easily divide said wrapping into two parts. In order to allow the opening of the wrapping, the strip has one end which extends outside 5 said mutually welded longitudinal edges of the band.
Generally, said strips are constituted by, or covered with, heat-weldable material, so as to initially allow their application onto the continuous band by means of a heat-welding operation and subsequently, by means of a second lo previously mentioned heat-welding operation, so as to allow the execution of the tubular container, which affects not only the longitudinal edges of the continuous band but also the end of the strips which is interposed between said longitudinal edges.
The above described known tubular wrappings have the disadvantage of requiring, for their manufacture, a succession of operations involving heat, which can entail a deterioration of the packaged products.
The aim of the present invention is to provide a 20 tubular container which does not require operations involving heat for its manufacture.
According to the present invention, a tubular container particularly for food products is provided which comprises a portion of sheet material having an inner surface 25 arrangeable in contact with a related product, two longitudinal edges and two transverse edges,-~-a la-yer of adhesive material applied on a band of said inner surface which extends along each of said edges, and a tear-strip which extends in contact with said inner surface ~, ~ iA ~
transversely to said longitudinal edges, said sheet being folded so as to move into mutual contact both the two inner surface bands arranged along the longitudinal edges, with the interposition of an end portion of said strip, and the 5 two inner surface bands which are arranged along the transverse edges, characterized in that said adhesive material is a cold-adhesive material, a first further layer of cold-adhesive material coating a first surface of said strip which faces said inner surface, and a second further lo layer of cold-adhesive material coating at least one portion of a second surface of said strip which is opposite to said first surface, said portion of second surface extending along said end portion of said strip.
Preferably, a layer of cold-adhesive material is 15 applied on a portion of said inner surface which is arranged in contact with said first surface of said strip.
The present invention will now be described with reference to the accomPanying drawings, which illustrate a non-limitative example of an embodiment thereof, wherein:
figure 1 is a perspective view of a preferred embodiment of the container according to the invention;
figure 2 is a plan view of a development of the wrapping of figure 1: and figure 3 is a sectional view taken along the line III-25 III of figure 2.
With.reference to figure 1, the reference numeral 1 generally indicates a tubular and substantially "pillow-shaped" container or wrapping for a product 2 (figures 2 and , : ; . ~ , --: .
.
- . . ', 3), particularly a food product, having a substantially parallelepipedal shape.
According to what is illustrated in figure 2, the container 1 is manufactured starting from a planar 5 rectangular sheet 3 obtained by transversely cutting a continuous band 4, and has an inner surface 5 (figure 3) which can be arranged in contact with a related product 2 and is delimited by two longitudinal edges 6 and by two transverse edges 7. Bands 8 and 9 of the inner surface 5 lo which extend along the edges 6 and 7 respectively are coated with respective layers 10 and 11 of cold-adhesive material.
~ he container or wrapping 1 is manufactured by folding the sheet 3 around the product 2 so as to move the two bands 8, and the adhesive layers 10 which coat them, into contact 15 with one another so as to mutually connect them and form a flap 12 which, according to what is illustrated in figure 1, extends in a longitudinal direction outside said container 1 and is folded into contact with an outer surface of the sheet 3. The container 1 is then completed by making the 20 layers 11, arranged along the mutually facing transverse bands 9, adhere to one another so as to form two transverse flaps 13.
If, as in the illustrated example, the sheet 3 is part of a continuous band 4, the operation of mutually glueing 25 the layers 11 and of forming the flaps 13 is performed simultaneously with an operation of transverse cutting of said band 4.
According to what is illustrated, in particular, in figure 2, the container 1 furthermore comprises a tear-strip 30 14 which extends in contact with an intermediate band 15 of fJ~
the :inner surface 5 of the sheet 3 transversely to the long:itudinal edges 6. ~ccording to what is more clearly illustrated in figure 3, the intermediate band 15 is preferably but not necessarily coated with a layer 16 of 5 cold-adhesive material. The strip 19 has a length at least equal to the distance comprised between an inner edge of one of the two longitudinal bands 8 and the longitudinal edge 6 which is opposite thereto, and the strip 14 is arranged so as to extend through one of the longitudinal bands 8 and be lo secured between said two bands 8 during the formation of the flap 12.
According to what is illustrated in figure 3, the strip 14 has a first surface 17, which is arranged in contact with the band 15 of the inner surface 5 of the sheet 3 and is 15 coated with a layer 18 of cold-adhesive material, and a second surface 19, which is opposite to the surface 17 and is at least partially coated by a layer 20 of cold-adhesive material. In particular, said layer 20 extends, as in the illustrated example, to a portion of the surface 19 which 20 extends along an end portion 21 of the strip 14 which is superimposed on one of the bands 8.
From the above description it can be deduced that the described container 1 can be obtained without performing any operation involving heat and that the container 1 is 25 furthermore a perfectly fluid-tight container, as normally required by hy~iene rules related to the packaging ~f food products. The presence of the layer 20 of cold-adhesive material, at least on the portion of the surface 19 which extends to the end portion 21 of the strip 14, ensures the 30 perfect closure of the wrapping 1 along the flap 12. ~n this ~ ~ .' ' - , ~ ' ' .
. . .
~ ` ' 3 -, i subject it should be stressed that one of the disadvantages normally occurring in cold-adhesives is that they do not ensure tightness unless glueing between two opposite adhesive layers is performed. Consequently, the wrapping 1 5 would not be perfectly fluid-tight if the layer 20 were missing.
The optional presence of the layer 16 along the intermediate band 15 of the surface 5 ensures the perfect adhesion of the strip 14, along its entire length, to the lO sheet 3 and, accordingly, a clear-cut splitting of the wrapping 1 into two parts when the strip 14 is pulled. One of said parts can be easily used to protect the product 2 while eating it.
The present invention relates to a tubular container particularly for food products.
In the field of food products it is known to use, especially for packaging products which have a generally 5 parallelepipedal shape, so-called tubular wrappings, which are manufactured starting from a continuous band, one surface of which, hereinafter indicated as "inner surface", is suitable for making contact with the products to be wrapped and has two peripheral longitudinal regions covered 10 by respective layers of heat-weldable adhesive material.
Generally, said products are packaged by arranging them in succession in contact witb the inner surface of the band, which is then folded transversely until the layers of adhesive material of said two peripheral longitudinal 15 regions are moved into mutual contact so as to define, once they are subjected to a heat-welding operation, a continuous tubular container which is laterally provided with a flap which is constituted by the mutually welded opposite longitudinal edges of the band.
Said continuous tubular container is subsequently cut in portions which are welded at their ends and have a preset length; each portion defines a tubular fluid-tight wrapping for a related product.
For many food products packaged in the above described 25 manner it is necessary to produce said wrappings so that they are particularly easy to o~en and so that their opening does not entail the complete destruction of said wrappings, a part of which must remain preferably intact and protect the related products until tbey are eaten.
: .
- : :
~d ~ C,i ~
This need is normally met by transversely applying, on each wrapping, a tear-stxip which allows to easily divide said wrapping into two parts. In order to allow the opening of the wrapping, the strip has one end which extends outside 5 said mutually welded longitudinal edges of the band.
Generally, said strips are constituted by, or covered with, heat-weldable material, so as to initially allow their application onto the continuous band by means of a heat-welding operation and subsequently, by means of a second lo previously mentioned heat-welding operation, so as to allow the execution of the tubular container, which affects not only the longitudinal edges of the continuous band but also the end of the strips which is interposed between said longitudinal edges.
The above described known tubular wrappings have the disadvantage of requiring, for their manufacture, a succession of operations involving heat, which can entail a deterioration of the packaged products.
The aim of the present invention is to provide a 20 tubular container which does not require operations involving heat for its manufacture.
According to the present invention, a tubular container particularly for food products is provided which comprises a portion of sheet material having an inner surface 25 arrangeable in contact with a related product, two longitudinal edges and two transverse edges,-~-a la-yer of adhesive material applied on a band of said inner surface which extends along each of said edges, and a tear-strip which extends in contact with said inner surface ~, ~ iA ~
transversely to said longitudinal edges, said sheet being folded so as to move into mutual contact both the two inner surface bands arranged along the longitudinal edges, with the interposition of an end portion of said strip, and the 5 two inner surface bands which are arranged along the transverse edges, characterized in that said adhesive material is a cold-adhesive material, a first further layer of cold-adhesive material coating a first surface of said strip which faces said inner surface, and a second further lo layer of cold-adhesive material coating at least one portion of a second surface of said strip which is opposite to said first surface, said portion of second surface extending along said end portion of said strip.
Preferably, a layer of cold-adhesive material is 15 applied on a portion of said inner surface which is arranged in contact with said first surface of said strip.
The present invention will now be described with reference to the accomPanying drawings, which illustrate a non-limitative example of an embodiment thereof, wherein:
figure 1 is a perspective view of a preferred embodiment of the container according to the invention;
figure 2 is a plan view of a development of the wrapping of figure 1: and figure 3 is a sectional view taken along the line III-25 III of figure 2.
With.reference to figure 1, the reference numeral 1 generally indicates a tubular and substantially "pillow-shaped" container or wrapping for a product 2 (figures 2 and , : ; . ~ , --: .
.
- . . ', 3), particularly a food product, having a substantially parallelepipedal shape.
According to what is illustrated in figure 2, the container 1 is manufactured starting from a planar 5 rectangular sheet 3 obtained by transversely cutting a continuous band 4, and has an inner surface 5 (figure 3) which can be arranged in contact with a related product 2 and is delimited by two longitudinal edges 6 and by two transverse edges 7. Bands 8 and 9 of the inner surface 5 lo which extend along the edges 6 and 7 respectively are coated with respective layers 10 and 11 of cold-adhesive material.
~ he container or wrapping 1 is manufactured by folding the sheet 3 around the product 2 so as to move the two bands 8, and the adhesive layers 10 which coat them, into contact 15 with one another so as to mutually connect them and form a flap 12 which, according to what is illustrated in figure 1, extends in a longitudinal direction outside said container 1 and is folded into contact with an outer surface of the sheet 3. The container 1 is then completed by making the 20 layers 11, arranged along the mutually facing transverse bands 9, adhere to one another so as to form two transverse flaps 13.
If, as in the illustrated example, the sheet 3 is part of a continuous band 4, the operation of mutually glueing 25 the layers 11 and of forming the flaps 13 is performed simultaneously with an operation of transverse cutting of said band 4.
According to what is illustrated, in particular, in figure 2, the container 1 furthermore comprises a tear-strip 30 14 which extends in contact with an intermediate band 15 of fJ~
the :inner surface 5 of the sheet 3 transversely to the long:itudinal edges 6. ~ccording to what is more clearly illustrated in figure 3, the intermediate band 15 is preferably but not necessarily coated with a layer 16 of 5 cold-adhesive material. The strip 19 has a length at least equal to the distance comprised between an inner edge of one of the two longitudinal bands 8 and the longitudinal edge 6 which is opposite thereto, and the strip 14 is arranged so as to extend through one of the longitudinal bands 8 and be lo secured between said two bands 8 during the formation of the flap 12.
According to what is illustrated in figure 3, the strip 14 has a first surface 17, which is arranged in contact with the band 15 of the inner surface 5 of the sheet 3 and is 15 coated with a layer 18 of cold-adhesive material, and a second surface 19, which is opposite to the surface 17 and is at least partially coated by a layer 20 of cold-adhesive material. In particular, said layer 20 extends, as in the illustrated example, to a portion of the surface 19 which 20 extends along an end portion 21 of the strip 14 which is superimposed on one of the bands 8.
From the above description it can be deduced that the described container 1 can be obtained without performing any operation involving heat and that the container 1 is 25 furthermore a perfectly fluid-tight container, as normally required by hy~iene rules related to the packaging ~f food products. The presence of the layer 20 of cold-adhesive material, at least on the portion of the surface 19 which extends to the end portion 21 of the strip 14, ensures the 30 perfect closure of the wrapping 1 along the flap 12. ~n this ~ ~ .' ' - , ~ ' ' .
. . .
~ ` ' 3 -, i subject it should be stressed that one of the disadvantages normally occurring in cold-adhesives is that they do not ensure tightness unless glueing between two opposite adhesive layers is performed. Consequently, the wrapping 1 5 would not be perfectly fluid-tight if the layer 20 were missing.
The optional presence of the layer 16 along the intermediate band 15 of the surface 5 ensures the perfect adhesion of the strip 14, along its entire length, to the lO sheet 3 and, accordingly, a clear-cut splitting of the wrapping 1 into two parts when the strip 14 is pulled. One of said parts can be easily used to protect the product 2 while eating it.
Claims (3)
1. Tubular container, particularly for food products, comprising a portion of sheet material having an inner surface arrangeable in contact with a related product, two longitudinal edges and two transverse edges, a layer of adhesive material applied over a band of said inner surface which extends along each of said edges, and a tear-strip which extends in contact with said inner surface transversely to said longitudinal edges, said sheet being folded so as to bring into mutual contact both the two inner surface bands which are arranged along the longitudinal edges, with the interposition of an end portion of said strip, and the two bands of the inner surface which are arranged along the transverse edges, wherein said adhesive material is a cold-adhesive material, a first further layer of cold-adhesive material coating a first surface of said strip which faces said inner surface, and a second further layer of cold-adhesive material coating at least one portion of a second surface of said strip which is opposite to said first surface, said portion of said second surface extending along said end portion of said strip.
2. Container according to claim 1, wherein a layer of cold-adhesive material is applied on a portion of said inner surface which is arranged in contact with said first surface of said strip.
3. Container according to claim 1, wherein said strip has a length which is at least equal to a distance comprised between an inner edge of one of said two bands which extend along said longitudinal edges and the longitudinal edge which is opposite to said band.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT3613A/90 | 1990-07-24 | ||
| IT00361390A IT1242546B (en) | 1990-07-24 | 1990-07-24 | TUBULAR CUSHION ENVELOPE, PARTICULARLY FOR FOOD PRODUCTS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2047051A1 true CA2047051A1 (en) | 1992-01-25 |
Family
ID=11110652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002047051A Abandoned CA2047051A1 (en) | 1990-07-24 | 1991-07-15 | Tubular container, particularly for food products |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0468367A1 (en) |
| JP (1) | JPH04239483A (en) |
| CA (1) | CA2047051A1 (en) |
| IT (1) | IT1242546B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1253212B (en) * | 1991-10-18 | 1995-07-11 | Azionaria Costruzioni Acma Spa | TUBULAR CUSHION ENVELOPE, PARTICULARLY FOR FOOD PRODUCTS |
| IT1259075B (en) * | 1992-03-27 | 1996-03-11 | Visona' Sergio | PRE-TREATED SHEET FOR FLEXIBLE PACKAGING |
| GB2365001B (en) * | 2000-07-24 | 2004-06-23 | Rye Dev Ltd | A package |
| GB2365000B (en) * | 2000-07-24 | 2004-06-23 | Rye Dev Ltd | A package |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH661025A5 (en) * | 1982-11-12 | 1987-06-30 | Sig Schweiz Industrieges | PACKING FROM A FLEXIBLE WRAPPING MATERIAL AND METHOD FOR THEIR PRODUCTION. |
| ATE54645T1 (en) * | 1985-09-27 | 1990-08-15 | Teich Ag | PACK FOR PACKING BULK PACKAGED GOODS. |
-
1990
- 1990-07-24 IT IT00361390A patent/IT1242546B/en active IP Right Grant
-
1991
- 1991-07-15 CA CA002047051A patent/CA2047051A1/en not_active Abandoned
- 1991-07-18 EP EP91112027A patent/EP0468367A1/en not_active Withdrawn
- 1991-07-24 JP JP3184374A patent/JPH04239483A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| IT9003613A0 (en) | 1990-07-24 |
| IT1242546B (en) | 1994-05-16 |
| JPH04239483A (en) | 1992-08-27 |
| EP0468367A1 (en) | 1992-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |