EP0538768B1 - Tubular pillow pack, particularly for food products - Google Patents
Tubular pillow pack, particularly for food products Download PDFInfo
- Publication number
- EP0538768B1 EP0538768B1 EP92117839A EP92117839A EP0538768B1 EP 0538768 B1 EP0538768 B1 EP 0538768B1 EP 92117839 A EP92117839 A EP 92117839A EP 92117839 A EP92117839 A EP 92117839A EP 0538768 B1 EP0538768 B1 EP 0538768B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tape
- layer
- cold
- sheet
- 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.)
- Expired - Lifetime
Links
- 235000013305 food Nutrition 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims description 19
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000004922 lacquer Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 14
- 238000007789 sealing Methods 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012856 packing Methods 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
- 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
Definitions
- the present invention relates to a tubular pillow pack, particularly for food products.
- substantially parallelepiped products in particular are wrapped in so-called tubular "pillow" packs formed from a continuous strip, one surface of which, contacting the product and hereinafter referred to as the “inner surface”, presents two peripheral longitudinal portions and a succession of cross bands coated with cold-stick adhesive material.
- these are normally loaded successively on to the inner surface of the strip, in the space defined by each two adjacent cross bands; and the strip is folded transversely so as to overlap the adhesive peripheral longitudinal portions, which are pressed together to define a continuous tubular wrapping with a lateral tab consisting of the joined opposite longitudinal edges of the strip.
- the continuous wrapping is then cut along the center line of each cross band to produce a succession of fluidtight tubular pillow packs, each containing one product.
- the inner surface of the continuous strip presents a further cross band of cold-stick adhesive material to which is applied a first surface of a ripoff tape, one end portion of which extends across one of the peripheral longitudinal portions of the strip.
- a second surface of the ripoff tape, opposite the first surface is coated, at least on said end portion of the tape, with a layer of cold-stick adhesive material.
- the ripoff tapes are formed by transversely cutting a continuous tape wound off a reel and one surface of which presents a longitudinal lateral portion coated with cold-stick adhesive material. On the reel, the adhesive lateral portion must be protected by a nonstick backing tape, which, as the reel is unwound, must be eliminated and wound on to an auxiliary takeup reel.
- a tubular pillow pack particularly for food products, comprising a portion of a first sheet having an inner surface contacting the product, two longitudinal edges and two transverse edges, a first layer of cold-stick adhesive material on a portion of said inner surface extending along each of said edges, and a ripoff tape integral with said inner surface and perpendicular to said longitudinal edges; said sheet being folded so as to mate both the two inner surface portions along the longitudinal edges, with the interposition of an end portion of said tape, and the two inner surface portions along the transverse edges; characterized by the fact that the tape is heat-sealed integral with said inner surface; and the tape is formed from a second sheet having a first surface contacting said inner surface and coated with a layer of non-cold-stick material, and a second surface, opposite said first surface, coated with a second layer of cold-stick material, at least on a lateral portion corresponding with said end portion of said tape.
- Said nonstick material preferably consists of lacquer applied to at least a portion of said first surface corresponding with the end portion of said tape.
- Number 1 in Fig.1 indicates a tubular pillow pack or wrapping for a product 2 (Fig.s 2 and 3), in particular, a substantially parallelepiped food product.
- wrapping 1 is formed from a flat rectangular sheet 3 produced by transversely cutting a continuous strip 4, and having an inner surface 5 (Fig.3) contacting product 2 and defined by two longitudinal edges 6 and two transverse edges 7. Portions 8 and 9 of inner surface 5 extending respectively along edges 6 and 7 are coated with respective layers 10 and 11 of cold-stick adhesive material.
- Wrapping 1 is formed by folding sheet 3 about product 2 so as to join the two portions 8 with respective adhesive layers 10 and so form a tab 12 (Fig.1) extending longitudinally outwards of wrapping 1 and which is folded on to the outer surface of sheet 3; and by joining facing transverse portions 9 with respective adhesive layers 11 so as to form two transverse tabs 13.
- sheet 3 forms part of a continuous strip 4
- layers 11 are joined for forming tabs 13 in known manner at the same time as strip 4 is cut transversely.
- wrapping 1 also comprises a ripoff tape 14 extending along an intermediate portion 15 of inner surface 5 of sheet 3 and perpendicular to longitudinal edges 6.
- the length of tape 14 is at least equal to the distance between the inner edge of one of longitudinal portions 8 and the opposite longitudinal edge 6, and is so arranged as to extend across one of longitudinal portions 8 and to be gripped between portions 8 during the formation of tab 12.
- tape 14 presents a first inner surface 16 contacting portion 15 of inner surface 5 of sheet 3, and which is heat-sealed in place before product 2 is loaded on to inner surface 5.
- tape 14 also presents an outer second surface 17 coated at least partially with a layer 18 of cold-stick adhesive material. More specifically, layer 18 is applied, as in the example shown, to the portion of surface 17 extending along end portion 19 of tape 14 over one of portions 8.
- tapes 14 are formed by a cutting device 20 transversely cutting a strip 21 wound off a reel 22 and having a surface 23 corresponding with outer surface 17 of tapes 14 and which is coated, at least along a longitudinal lateral portion 24, with a continuous layer 25 of adhesive material corresponding with layer 18.
- strip 21 also presents a surface 26 coated, at least along a lateral portion corresponding with end portion 19 of tapes 14, with a layer 27 of non-cold-stick material preferably consisting of lacquer.
- the non-cold-stick material of layer 27 in no way prevents tapes 14 from being heat-sealed to sheets 3, during which process, in fact, it is converted, as in the Fig.3 example, into a layer 28 of adhesive material between surface 16 of tape 14 and inner surface 5 of sheet 3, or, according to a variation not shown, evaporates completely.
- Wrapping 1 as described above may thus be produced with no recourse to heat-sealing in the presence of products 2, and provides for perfect fluidtight sealing as normally required by health standards governing the packing of food products.
- strip 21 on reel 22 requires no backing strip for preventing adhesive layer 25 of one turn from adhering to surface 26 of the adjacent turn on reel 22.
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)
- Buffer Packaging (AREA)
Description
- The present invention relates to a tubular pillow pack, particularly for food products.
- In the food industry, substantially parallelepiped products in particular are wrapped in so-called tubular "pillow" packs formed from a continuous strip, one surface of which, contacting the product and hereinafter referred to as the "inner surface", presents two peripheral longitudinal portions and a succession of cross bands coated with cold-stick adhesive material.
- For wrapping the products, these are normally loaded successively on to the inner surface of the strip, in the space defined by each two adjacent cross bands; and the strip is folded transversely so as to overlap the adhesive peripheral longitudinal portions, which are pressed together to define a continuous tubular wrapping with a lateral tab consisting of the joined opposite longitudinal edges of the strip.
- The continuous wrapping is then cut along the center line of each cross band to produce a succession of fluidtight tubular pillow packs, each containing one product.
- For enabling troublefree removal of the pack as described above, it is normally provided with a ripoff tape.
- According to one known technique, between each two adjacent cross bands, the inner surface of the continuous strip presents a further cross band of cold-stick adhesive material to which is applied a first surface of a ripoff tape, one end portion of which extends across one of the peripheral longitudinal portions of the strip. Moreover, for ensuring perfect fluidtight sealing of the two longitudinal portions of the strip, a second surface of the ripoff tape, opposite the first surface, is coated, at least on said end portion of the tape, with a layer of cold-stick adhesive material.
- For wrapping food products, known pillow packs of the aforementioned type have proved excellent, both as regards sealing of the product, and the absence, during the wrapping process, of any heat-sealing in the presence of the product.
- Nevertheless, the design of known pillow packs of the aforementioned type, and particularly of the ripoff tapes, requires the use of auxiliary equipment of extremely complex design. The ripoff tapes, in fact, are formed by transversely cutting a continuous tape wound off a reel and one surface of which presents a longitudinal lateral portion coated with cold-stick adhesive material. On the reel, the adhesive lateral portion must be protected by a nonstick backing tape, which, as the reel is unwound, must be eliminated and wound on to an auxiliary takeup reel.
- It is an object of the present invention to provide a tubular pillow pack designed to eliminate the construction difficulties typically associated with known wrappings.
- According to the present invention, there is provided a tubular pillow pack, particularly for food products, comprising a portion of a first sheet having an inner surface contacting the product, two longitudinal edges and two transverse edges, a first layer of cold-stick adhesive material on a portion of said inner surface extending along each of said edges, and a ripoff tape integral with said inner surface and perpendicular to said longitudinal edges; said sheet being folded so as to mate both the two inner surface portions along the longitudinal edges, with the interposition of an end portion of said tape, and the two inner surface portions along the transverse edges; characterized by the fact that the tape is heat-sealed integral with said inner surface; and the tape is formed from a second sheet having a first surface contacting said inner surface and coated with a layer of non-cold-stick material, and a second surface, opposite said first surface, coated with a second layer of cold-stick material, at least on a lateral portion corresponding with said end portion of said tape.
- Said nonstick material preferably consists of lacquer applied to at least a portion of said first surface corresponding with the end portion of said tape.
- A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
- Fig.1 shows a view in perspective of a preferred embodiment of the pack according to the present invention;
- Fig.2 shows a spreadout view of the Fig.1 pack;
- Fig.3 shows a section along line III-III in Fig.2;
- Fig.4 shows, schematically, the various stages for producing a detail in Fig.s 2 and 3.
- Number 1 in Fig.1 indicates a tubular pillow pack or wrapping for a product 2 (Fig.s 2 and 3), in particular, a substantially parallelepiped food product.
- As shown in Fig.2, wrapping 1 is formed from a flat
rectangular sheet 3 produced by transversely cutting a continuous strip 4, and having an inner surface 5 (Fig.3) contactingproduct 2 and defined by twolongitudinal edges 6 and twotransverse edges 7.Portions inner surface 5 extending respectively alongedges respective layers - Wrapping 1 is formed by
folding sheet 3 aboutproduct 2 so as to join the twoportions 8 with respectiveadhesive layers 10 and so form a tab 12 (Fig.1) extending longitudinally outwards of wrapping 1 and which is folded on to the outer surface ofsheet 3; and by joining facingtransverse portions 9 with respectiveadhesive layers 11 so as to form twotransverse tabs 13. - When, as in the example shown,
sheet 3 forms part of a continuous strip 4,layers 11 are joined for formingtabs 13 in known manner at the same time as strip 4 is cut transversely. - As shown particularly in Fig.2, wrapping 1 also comprises a
ripoff tape 14 extending along anintermediate portion 15 ofinner surface 5 ofsheet 3 and perpendicular tolongitudinal edges 6. - The length of
tape 14 is at least equal to the distance between the inner edge of one oflongitudinal portions 8 and the oppositelongitudinal edge 6, and is so arranged as to extend across one oflongitudinal portions 8 and to be gripped betweenportions 8 during the formation oftab 12. - As shown in Fig.3,
tape 14 presents a firstinner surface 16 contactingportion 15 ofinner surface 5 ofsheet 3, and which is heat-sealed in place beforeproduct 2 is loaded on toinner surface 5.Opposite surface 16,tape 14 also presents an outersecond surface 17 coated at least partially with alayer 18 of cold-stick adhesive material. More specifically,layer 18 is applied, as in the example shown, to the portion ofsurface 17 extending alongend portion 19 oftape 14 over one ofportions 8. - As shown in Fig.4,
tapes 14 are formed by acutting device 20 transversely cutting astrip 21 wound off areel 22 and having asurface 23 corresponding withouter surface 17 oftapes 14 and which is coated, at least along a longitudinallateral portion 24, with acontinuous layer 25 of adhesive material corresponding withlayer 18.Opposite surface 23,strip 21 also presents asurface 26 coated, at least along a lateral portion corresponding withend portion 19 oftapes 14, with alayer 27 of non-cold-stick material preferably consisting of lacquer. - The non-cold-stick material of
layer 27 in no way preventstapes 14 from being heat-sealed tosheets 3, during which process, in fact, it is converted, as in the Fig.3 example, into alayer 28 of adhesive material betweensurface 16 oftape 14 andinner surface 5 ofsheet 3, or, according to a variation not shown, evaporates completely. - Wrapping 1 as described above may thus be produced with no recourse to heat-sealing in the presence of
products 2, and provides for perfect fluidtight sealing as normally required by health standards governing the packing of food products. - Moreover, by virtue of
non-stick layer 27,strip 21 onreel 22 requires no backing strip for preventingadhesive layer 25 of one turn from adhering tosurface 26 of the adjacent turn onreel 22.
Claims (3)
- A tubular pillow pack (1), particularly for food products, comprising a portion of a first sheet (3) having an inner surface (5) contacting the product (2), two longitudinal edges (6) and two transverse edges (7), a first layer (10, 11) of cold-stick adhesive material on a portion (8, 9) of said inner surface (5) extending along each of said edges (6, 7), and a ripoff tape (14) integral with said inner surface (5) and perpendicular to said longitudinal edges (6); said sheet (3) being folded so as to mate both the two inner surface portions (8) along the longitudinal edges (6), with the interposition of an end portion (19) of said tape (14), and the two inner surface portions (9) along the transverse edges (7); characterized by the fact that the tape (14) is formed from a second sheet (21) having an inner surface (26; 16) heat-sealed integral with said inner surface (5) and coated with a layer (27; 28) of non-cold-stick material, and an outer second surface (23; 17), opposite said first surface (26), coated with a second layer (25; 18) of cold-stick material, at least on a lateral portion (24) corresponding with said end portion (19) of said tape (14).
- A tubular pillow pack as claimed in Claim 1, characterized by the fact that said nonstick material consists of lacquer.
- A tubular pillow pack as claimed in Claim 1 or 2, characterized by the fact that said nonstick material is applied to at least a portion of said first surface (26; 16) corresponding with the end portion (19) of said tape (14).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBO910381 | 1991-10-18 | ||
ITBO910381A IT1253212B (en) | 1991-10-18 | 1991-10-18 | TUBULAR CUSHION ENVELOPE, PARTICULARLY FOR FOOD PRODUCTS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0538768A1 EP0538768A1 (en) | 1993-04-28 |
EP0538768B1 true EP0538768B1 (en) | 1996-04-24 |
Family
ID=11337786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92117839A Expired - Lifetime EP0538768B1 (en) | 1991-10-18 | 1992-10-19 | Tubular pillow pack, particularly for food products |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0538768B1 (en) |
DE (1) | DE69210166T2 (en) |
ES (1) | ES2086609T3 (en) |
IT (1) | IT1253212B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2292556B (en) * | 1994-08-22 | 1998-05-13 | Anglia Packaging Supplies Limi | Sealing envelopes and packages |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4421817A (en) * | 1980-08-29 | 1983-12-20 | Felice Pina | Method for making printable self-adhesive tapes and the self-adhesive tapes obtaned thereby |
CH661025A5 (en) * | 1982-11-12 | 1987-06-30 | Sig Schweiz Industrieges | PACKING FROM A FLEXIBLE WRAPPING MATERIAL AND METHOD FOR THEIR PRODUCTION. |
DE3423295A1 (en) * | 1984-06-23 | 1986-01-02 | Maschinenfabrik Alfred Schmermund Gmbh & Co, 5820 Gevelsberg | DEVICE FOR CUTTING A TAKE-OFF STRIP |
WO1987002011A1 (en) * | 1985-09-27 | 1987-04-09 | Folienwalzwerk Brüder Teich Aktiengesellschaft | Pack for containing a material in the form of pieces |
AU8106191A (en) * | 1990-06-22 | 1992-01-23 | Paul R. Mitchell | Tear tape |
IT1242546B (en) * | 1990-07-24 | 1994-05-16 | Azionaria Costruzioni Acma Spa | TUBULAR CUSHION ENVELOPE, PARTICULARLY FOR FOOD PRODUCTS. |
-
1991
- 1991-10-18 IT ITBO910381A patent/IT1253212B/en active IP Right Grant
-
1992
- 1992-10-19 DE DE69210166T patent/DE69210166T2/en not_active Expired - Fee Related
- 1992-10-19 EP EP92117839A patent/EP0538768B1/en not_active Expired - Lifetime
- 1992-10-19 ES ES92117839T patent/ES2086609T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ITBO910381A1 (en) | 1993-04-18 |
EP0538768A1 (en) | 1993-04-28 |
ES2086609T3 (en) | 1996-07-01 |
DE69210166D1 (en) | 1996-05-30 |
DE69210166T2 (en) | 1996-10-31 |
ITBO910381A0 (en) | 1991-10-18 |
IT1253212B (en) | 1995-07-11 |
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