WO2011013147A1 - Method and apparatus for making a composite tape for packaging foodstuffs - Google Patents

Method and apparatus for making a composite tape for packaging foodstuffs Download PDF

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Publication number
WO2011013147A1
WO2011013147A1 PCT/IT2009/000331 IT2009000331W WO2011013147A1 WO 2011013147 A1 WO2011013147 A1 WO 2011013147A1 IT 2009000331 W IT2009000331 W IT 2009000331W WO 2011013147 A1 WO2011013147 A1 WO 2011013147A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
paper
tape
apertures
transparent material
Prior art date
Application number
PCT/IT2009/000331
Other languages
French (fr)
Inventor
Francesco Dinardo
Original Assignee
Kemiplast S.R.L.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kemiplast S.R.L. filed Critical Kemiplast S.R.L.
Priority to PCT/IT2009/000331 priority Critical patent/WO2011013147A1/en
Publication of WO2011013147A1 publication Critical patent/WO2011013147A1/en
Priority to SM201200005T priority patent/SMP201200005T2/en

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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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/263—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for ventilating the contents
    • 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
    • B65D75/522—Inspection openings or windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming

Definitions

  • the perforating unit 106 may be located either upstream of the diecutter 102 (for example, to perform the perforation of the paper material) or downstream of the application unit 103 (for example, to perform the perforation of the transparent material or of both the transparent and paper materials) or, again, located intermediate between the diecutter 102 and the application unit 103.

Abstract

A method of making a composite tape for packaging foodstuffs, comprising the steps of predisposing a tape (2) of paper material, forming a succession of through apertures (5) on the paper tape (2) and steadily applying a coating (3) of transparent material at least partially transparent to the paper tape (2) in correspondence of each aperture (5) so as to fully cover said apertures (5). The method further comprises the step of forming one or more transpiration holes (F) on the paper tape (2) and/or on the transparent coating (3) to make the composite tape (1) permeable to the air.

Description

"METHOD AND APPARATUS FOR MAKING A COMPOSITE TAPE FOR
PACKAGING FOODSTUFFS "
Technical field of the invention
The object of the present invention is a method and an apparatus for the production of a composite tape for packaging foodstuffs, in particular fresh foodstuffs.
The continuous tape is used for making foodstuffs packages consisting in part of paper material and having a transparent portion allowing any purchaser to inspect the content of the package. By way of example only, the composite tape may form a semitransparent bag for holding bread, cakes and the like .
State Of art
Various processes are known for making tapes of composite material for fresh foodstuffs.
It is known, in particular from the Italian Patent
Application FI2006A000110 in the name of the same
Applicant, a tape of paper material comprising two longitudinal strips of paper material with interposed a longitudinal strip of transparent film therebetween. The strip of transparent film exhibits perforations to allow a transpiration effect useful, for example, for packaging hot products (such as bread taken out from oven) .
Such a composite tape is produced by an apparatus comprising a decoiler for continuously unreeling a coil of transparent film, a gluer, a perforator, a pair of decoilers for continuously unwinding respective paper material, a coupler for causing the paper tapes to be solid to each other, with the transparent tape being in correspondence of the glued portions, and a storage unit for stocking the continuous tape or subdividing it into sheets and storing them.
The Applicant has found that the above indicated composite tape exhibits some drawbacks.
In particular, the above tape has a large transparent surface defined by the central strip of perforated transparent material and this, if by one hand allows a good visibility of the product held by the package, on the other hand brings about a significant exposition of the product to the light and to oxidizing actions. An excessive quantity of light causes in fact a fast aging of the product, in the specific instance a rapid darkening, a rapid decoloration and the loss of its organolectic properties. Moreover, an excessive quantity of light increases the rate of proliferation of bacterial micro-organisms in the product held by the package. On the other hand, it has been noted that a simple thinning of the transparent strip reduces excessively, often to a critical extent, the visibility of the product by a possible purchaser.
Description of the invention
In this context, the technical task on which the present invention is based is to propose a method and an apparatus for the production of a composite tape for packaging foodstuffs, in particular fresh foodstuffs, which overcomes the above cited drawbacks of the prior art.
In particular, it is an object of the present invention to provide a method and an apparatus for the production of a composite tape for packaging foodstuffs, in particular fresh foodstuffs, which allows forming a package able to make the product held therein sufficiently visible and, at the same time, to slow down the decay process of same product. The indicated technical task and the specified object are substantially achieved by a method and an apparatus for the production of a composite tape for packaging foodstuffs, in particular fresh foodstuffs, comprising the technical characteristics set forth, respectively, in the claims 1 and 11 and/or in one or more of their dependent claims.
It is also an object of the invention to provide a composite tape for packaging foodstuffs according to one or more of claims 16 to 22.
Further characteristics and advantages of the present invention will appear more clearly by a reading of the indicative and thus non-limitative description of a preferred but non-exclusive embodiment of a method and an apparatus for the production of a composite tape for packaging foodstuffs, as illustrated in the accompanying drawings, wherein:
- Fig. 1 is a perspective view of a composite tape for packaging foodstuffs according to the present invention and to a first embodiment thereof;
- Fig. 2 is a sectional view of the tape of Fig. 1 taken on line II-II in Fig. 1;
- Fig. 3 is a perspective view of a composite tape for packaging foodstuffs according to the present invention and to a second embodiment thereof;
- Fig. 4 is a sectional view of the tape of Fig. 1 taken on line IV-IV in Fig. 3;
- Fig. 5 is a perspective view of a composite tape for packaging foodstuffs according the present invention and to a third embodiment thereof;
- Fig. 6 is a sectional view of the tape of Fig. 1 taken on line VI-VI in Fig. 5;
Fig. 7 is a schematic representation of an apparatus for the production of a composite tape for packaging foodstuffs according to the present invention and to a first embodiment thereof;
Fig. 8 is a schematic representation of an apparatus for the production of a composite tape for packaging foodstuffs according to the present invention and to a second embodiment thereof;
Fig. 9 is plan view of a composite tape for packaging foodstuffs, according to the present invention, showing further constructional details. According to the accompanying drawings, numeral 1 indicates on the whole a composite tape according to the invention.
The composite tape 1 is of a type able to be used for the production of packages for foodstuffs, for example bags mostly made of paper, for bread, pizzas, cakes and like, or more in general for foodstuffs rapidly perishable and which require a transpirating package .
The composite tape 1 comprises a first layer 2 of paper material and a second layer 3 of transparent material (preferably a transparent film) , firmly coupled to each other by glueing. Preferably, the paper material comprises heat-melting material and is coupled to the transparent material by welding.
Preferably, the first layer 2 is a continuous tape unreeling from a coil 4.
The first layer 2 exhibits a plurality of through apertures 5 which are disposed in succession, preferably an orderly succession, along a prevalent direction of development of the first layer 2. In the illustrated embodiment, the through apertures 5 are shaped as a heart, however they may have any closed shape, provided a transverse closing band 6 is present therebetween delimiting two adjacent through apertures 5.
The through apertures 5 are preferably obtained by die-cutting, and the portion removed to make a through aperture 5 (said portion having outer profile like the one of the through aperture 5) is fully removed from the first paper layer 2.
Each through aperture 5 defines a transparent window through which a potential purchaser can observe the product disposed on the other side of the composite tape 1, that is, inside the package, to evaluate whatever the product is worth purchasing. To this end, the size of the through apertures 5 is such as to allow an appropriate inspection of the whole product or a predominant portion thereof.
The second layer 3 is disposed to provide a coating of said through apertures 5 and is at least partially transparent, preferably provided with a fully transparent surface. To obtain this, the second transparent layer 3 has an extension larger than that of the respective through aperture 5 on which it is applied. In more detail, the second transparent layer 3 has an outer shape fully circumscribing the outline of the respective through aperture 5 on which it is applied, so as to be glued to the first paper layer 2 along a whole peripheral development of the through aperture 5.
According to a first embodiment (Figs. 1, 2 and 7), the second transparent layer 3 is defined by a succession of discrete sheets 3' of transparent material, each of which has an external profile fully circumscribing the respective through aperture 5 to which it is applied. Preferably, the sheets 3' of transparent material have rectangular or square shape.
The sheets 3' of transparent material are taken out from a suitable store 107 or, alternatively, can be obtained directly by cutting lengths of a continuous tape unreeled from a respective coil, not shown, (for example a coil of the type represented in Fig. 8 and designated by numeral 7) .
According to a second embodiment (Figs. 3, 4 and 8), the second transparent layer 3 is defined by a continuous tape 3'' in transparent material having a prevalent direction of development and a width, measured transversally to the prevalent direction of development, smaller than the corresponding width of the paper tape. The continuous tape 3'' of transparent material is steadily applied by glueing to a surface of the paper tape and covers entirely a plurality of consecutive through apertures 5.
Preferably, the continuous tape 3' ' of transparent material is applied in centered position along the prevalent direction of development of the paper tape and leaves two external longitudinal bands of the paper tape uncovered.
According to a third embodiment (Figs. 5, 6 and 8), the second transparent layer 3 is defined by a continuous tape 3' ' ' of transparent material having a prevalent direction of development and a width, measured transversally to the prevalent direction of development, substantially equal to the corresponding width of the paper tape. The continuous tape 3' ' ' of transparent material is securely applied by glueing to a surface of the paper tape and covers entirely a plurality of consecutive through apertures 5.
In this case, the continuous tape 3' ' ' of transparent material covers substantially entirely one of the two surfaces of the paper tape and thus the through apertures 5 as well.
In the above cited second and third embodiments (Fig. 8), the continuous tape 3' ' , 3' ' ' of transparent material is obtained by unreeling it from a respective coil 7.
The second layer 3 is made of transparent material including biodegradable and/or water-soluble and/or oxo-biodegradable and /or compostable materials. Preferably, the second layer 3 is made of a material comprising polylactic acid (PLA) and/or cellophane. The first paper layer 2 and the second transparent layer 3 are also made of a material for foodstuffs. The composite tape 1, upon completion thereof, is stored by winding it onto a respective coil 8 to be fed to a packaging facility (not shown) wherein it will be subdivided into sheets to form respective packages provided with inspection window.
According to a different embodiment not shown, the composite tape 1 is cut into sheets and these are stored and/or fed to the subsequent apparatus for making packages. Each sheet obtained by subdividing the composite tape 1 preferably exhibits one of said through aperture 5 covered with the transparent material .
In both the alternative embodiments above described, the composite tape 1 is so constructed as to be easily subdivided automatically into individual sheets 9 each being able to form a respective package for a foodstuff.
In this view, Fig. 9 illustrates the sheets 9 into which the composite tape 1 is able to be subdivided, the subdivision lines being shown by a dashed line. The first paper layer 2 exhibits, to this purpose, a succession of recognition elements 10, preferably in the form of scores, able to be automatically detected (for example through optical systems) by a detection unit which is capable of determining the position of the first paper layer 2 at least along the prevalent direction of development thereof. This is particularly useful in the die-cutting operation for the formation of the through apertures 5, during which, the first paper layer 2 is made to advance with intermittent motion for die-cutting the through apertures 5. The above recognition elements are disposed on the first paper layer 2 at locations allowing them to feel the positions of the through apertures 5 - so as to automatically identify every time the portion of the first paper layer 2 on which the die-cutting is to be made - by simply detecting the position of the recognition elements 10.
The recognition elements 10 can also serve to define exactly the locations on which the composite tape 1 is to be cut into sheets 9.
To allow a suitable transpiration of the packaged product, the composite tape 1 exhibits, for each sheet 9 into which it shall be subdivided, one or more transpiration holes "F" able to put the two opposite surfaces of the composite tape 1 into communication with each other allowing therefore a state of air and of relative humidity of the product permeability.
According to a first embodiment, the transpiration holes "F" are formed on the second layer 3 of transparent material. In particular, the transpiration holes "F" may be made either before or after the application of the second transparent layer 3 to the first paper layer 2. Moreover, the transpiration holes "F" may be formed in the same facility that produces the composite tape 1 or, alternatively, the second transparent layer 3 may be unwound from a coil 7 of perforated transparent material formed in a previous stage.
According to a second embodiment, the transpiration holes "F" are formed on the first paper layer 2. In particular, in this case, the transpiration holes "F" may be made either before or after the application of the second transparent layer 3 to the first paper layer 2 but, in any case, subsequently to the unreeling of paper tape from the respective coil 4. The transpiration holes "F" can be made either through a mechanical action (use of cold-operated metal perforators) or by means of laser equipment (or, more in general, by means of hot-operated perforators) . In the latter case, the transpiration holes "F" may have dimensions (microholes) smaller than those visible to the naked eye.
According to a third embodiment, the transpiration holes "F" are formed on a superimposition region between the first paper layer 2 and the second transparent layer 3.
Described herebelow is an apparatus for the production of the composite tape 1 as previously set forth.
The apparatus, designated by 100 on the whole, comprises :
- a first decoiler unit 101 for unreeling a coil 4 of paper material for feeding said first paper layer 2 as a continuous tape along a direction of advancement "A" parallel to the prevalent direction of development thereof;
- a diecutter 102 for making on the first paper layer 2 a row of through apertures 5 spaced apart in succession along the prevalent direction of development of the first paper layer 2; and
a unit 103 for the application of the second transparent layer 3 on the first paper layer 2 in correspondence of the through apertures 5 to cover completely the latter with transparent material.
The application unit 103, in the embodiment of the above described production process, as illustrated in Figs. 1 and 2, takes out the individual sheets 3' of transparent material from a store of sheets 107 and applies them in succession to the consecutive through apertures 5 of the first paper layer 2.
Such an apparatus is shown in Fig. 7.
Alternatively, according to another embodiment (not shown), the application unit 103 comprises:
- a second decoiler unit 101 for unreeling a coil 7 of transparent material for feeding said second transparent layer 3 as a continuous tape along a direction of advancement "A" parallel to the prevalent direction of development thereof; and
a cutting unit for subdividing the second transparent layer 3 into the above cited sheets 3' each of which is applied in correspondence of a respective through aperture 5.
In the embodiments of the above production process, as illustrated in Figs. 3-6, the application unit 103 comprises (Fig. 8) a second decoiler unit 104 for unreeling a coil 7 of transparent material for feeding said second transparent layer 3 as a continuous tape along a direction of advancement "A" parallel to the prevalent direction of development thereof. The second transparent layer 3 is then ligned up with the first paper layer 2, in particular by disposing the respective prevalent directions of development parallel to each other, preferably superimposed to each other.
The application unit 103 also comprises a glueing device 105 able to interpose glueing material between the first and second layers 2 and 3.
Preferably, the application unit 103 further comprises a pressing unit 108 for pressing the first paper layer 2 and the second transparent layer 3 one against the other after the glueing step to facilitate the adhesion between the two layers 2, 3. The apparatus 100 may further comprise a perforating unit 106 for making one or more transpiration holes "F" on at least one of the two layers 2, 3 to make the tape 1 of composite material permeable to the air and to the relative humidity of the food-product. The perforating unit 106 comprises mechanical drilling tools or, alternatively, laser means to make microholes not visible to the naked eye.
The perforating unit 106 may be located either upstream of the diecutter 102 (for example, to perform the perforation of the paper material) or downstream of the application unit 103 (for example, to perform the perforation of the transparent material or of both the transparent and paper materials) or, again, located intermediate between the diecutter 102 and the application unit 103.
The apparatus 100 further comprises driving means (not shown) such as an electric motor associated with suitable traction rollers, to make the two layers 2, 3 advance with intermittent motion.
Advantageously, the apparatus 100 further comprises detection means (not shown) able to detect the position of the above cited recognition elements 10 at least along the direction of advancement "A" of layers 2, 3. Preferably, the detection means are of optical type, such as a photocell for example.
Advantageously, moreover, the detection means are operatively connected to the driving means for determining the instants of interruption of advancement of layers 2, 3 upon the detection of the recognition elements by the detection means. In this way, the two layers 2, 3 are stopped when the detection means detect that a recognition element 10 has reached a predetermined position, so as to carry out the die-cutting of the first paper layer 2 at a preset position.
The present invention achieves the proposed object, by overcoming the drawbacks of the prior art.
The provision of inspection windows consisting of through apertures separated by transverse bands of paper material, makes it possible to minimize the transparent surface through which the light can pass into the composite tape. This reduces the deterioration effect on the product wrapped by the composite tape while, at the same time, the window allows anyway a proper inspection of the same product.
Moreover, the tape of composite material according to the invention, can be used to make envelops for packaging fresh foodstuffs. In fact, owing to the transpiration holes, the packaged product maintains is subjected to a suitable transpiration and, therefore, its fragrance and organolectic properties can be preserved for a along time.
In addition to this, the composite tape can be fabricated through an industrial process at limited costs.

Claims

1. Method for the production of a composite tape for packaging foodstuffs, comprising the steps of:
- predisposing a first layer (2) of paper material, said first layer (2) comprising a continuous tape of paper material;
- forming a succession of through apertures (5) on said paper tape (2) ;
- steadily applying to said first layer (2) a second layer (3) of transparent material at least partially transparent in correspondence of each aperture (5) so as to fully cover said apertures (5) ;
- predisposing, on at least one of said layers (2, 3) , one or more holes (F) to make said composite tape (1) permeable to the air.
2. Method according to claim 1, wherein said step of steadily applying a second layer (3) of n material to the first paper layer (2) comprises the step of predisposing a plurality of lengths (3' ) of transparent material at least partially transparent, and a step of applying each of said lengths (3' ) in correspondence of said apertures (5) of the first paper layer (2) to cover completely said apertures (5) .
3. Method according to claim 1, wherein said step of steadily applying a second layer (3) of transparent material to the first paper layer (2) comprises the step of predisposing a continuous tape (3' ' ) of transparent material at least partially transparent and having a width less that the width of the paper tape, and a step of applying said continuous tape (3' ' ) of transparent material to the continuous paper tape so that the continuous tape (3' ' ) of transparent material will cover completely the apertures (5) of the continuous paper tape.
4. Method according to claim 1, wherein said step of steadily applying a second layer (3) of transparent material to the first paper layer (2) comprises the step of predisposing a continuous tape (3' ' ' ) of transparent material at least partially transparent and having a width substantially equal to the corresponding width of the paper tape, and a step of applying said continuous tape (3''') of transparent material to the continuous paper tape so that the continuous tape (3''') of transparent material will cover completely the apertures (5) of the continuous paper tape.
5. Method according to any of the preceding claims, wherein said step of forming a succession of through apertures (5) on said first layer (2) comprises the step of die-cutting said first paper layer (2) .
6. Method according to any of the preceding claims, wherein said step of predisposing said first layer (2) of paper material is performed by predisposing a continuous tape of paper material having a plurality of recognition elements (10), and wherein said method further comprises the step of determining the position of said continuous paper tape at a plurality of successive instants by detecting, preferably with optical means, said recognition elements (10) .
7. Method according to claim 6, wherein said method comprises the step of feeding said continuous paper tape with an intermittent motion synchronized with the detection of said recognition elements (10).
8. Method according to any of the preceding claims, wherein said step of predisposing one or more holes
(F) on at least one of said layers (2, 3) comprises the step of perforating said second layer (3) of transparent material, said step of applying the second transparent layer (3) to the first paper layer (2) being preferably carried out by locating at least one hole (F) of the second transparent layer (3) in correspondence of one of said apertures (5) of said first paper layer (2) .
9. Method according to any of previous claims 1 to 7, wherein said step of predisposing one or more holes (F) on at least one of said layers (2, 3) is carried out by using, for said step of applying the second transparent layer (2) , a layer of pre-perforated transparent material.
10. Method according to any of the preceding claims, wherein said step of predisposing one or more holes (F) on at least one of said layers (2, 3) comprises the step of forming, on said first layer (2)• of paper material, one or more transpiration holes (F) distinct from said apertures (5) .
11. Apparatus for the production of a composite tape for packaging foodstuffs, comprising:
- a decoiler unit (101) for unreeling a coil (4) of paper material for feeding said first layer (2) of paper material along a direction of advancement (A) ;
- a unit (102) for making a succession of through apertures (5) separate from each other on said first paper layer (2) unreeled from said coil (4);
- a unit (103) for the application of a second layer (3) of transparent material at least partially transparent on said first paper layer (2) in correspondence of said apertures (5) to fully cover said apertures (5) with the transparent material;
- a perforation unit (106) for making one or more holes (F) on at least one of said layers (2, 3) of paper and transparent material to make the tape of composite material (1) permeable to the air.
12. Apparatus according to claim 11, wherein said unit (102) for making a succession of through apertures (5) on the first paper layer (2) comprises a diecutter (102) .
13. Apparatus according to claim 11 or 12, wherein said unit (103) for the application of a second layer (3) of transparent material comprises a second decoiler unit (104) for unreeling a coil (7) of transparent material at least partially transparent and a cutting unit for sectioning the transparent material into distinct sheets (3' ) .
14. Apparatus according to claim 11 or 12, wherein said unit (103) for the application of a second layer (3) of transparent material comprises a storing unit (107) for storing distinct sheets (3') of transparent material at least partially transparent, and an application device for withdrawing individual sheets (3' ) of transparent material and applying same sheets (3') on the first paper layer (2) in correspondence of said apertures (5) .
15. Apparatus according to any of previous claims 11 to 14, comprising detection means able to detect the position of the recognition elements (10) disposed on the first paper layer (2), and further comprising driving means acting at least on the first paper layer (2) to cause the first paper layer (2) to advance according to a predetermined motion along said direction of advancement (A) ; said driving means being connected to said detection means to drive said paper material into an intermittent motion synchronized with the detections, operated by said detection means, of said recognition elements (10) .
16. Composite tape for packaging foodstuffs, comprising:
- a first layer (2) of paper material having a prevalent direction of development and exhibiting a plurality of through apertures (5) disposed in succession along said prevalent direction of development;
- for each of said apertures (5), a second coating layer (3) of transparent material at least partially transparent to define, in cooperation with said apertures (5) , respective inspection windows able to allow a user to observe a product disposed inside a package formed with said composite tape (1); and
- at least one transpiration hole (F) formed on at least one of said layers (2, 3) and distinct from said apertures (5) to make said composite tape permeable to the air.
17. Composite layer according to claim 16, wherein said apertures (5) have such a dimension as to provide inspection windows through which a user can observe a product disposed on the opposite side of the composite tape (1) .
18. Composite layer according to claim 16 or 17, wherein said first layer (2) of paper material comprises a continuous tape having a plurality of recognition elements (10) automatically detectable by detection means for determining the position of said composite tape (1) at least along said prevalent direction of development.
19. Composite layer according to claim 18, wherein said recognition elements comprise a sequence of scores formed on said paper tape and preferably spaced apart along said prevalent direction of development .
20. Composite layer according to any of previous claims 16 to 19, wherein said second coating layer (3) of transparent material comprises, for each of said apertures (5), a length (3') of transparent material, preferably sheets of transparent material, steadily applied to said first paper layer (2) in correspondence of said aperture (5) for coating completely said aperture (5) .
21. Composite layer according to any of previous claims 16 to 19, wherein said second coating layer (3) of transparent material provided for each of said apertures (5) comprises a continuous tape (3'') of transparent material having a prevalent direction of development and fixedly applied to the first paper layer (2) to cover completely a plurality of said apertures (5) , said continuous tape (3' ' ) of transparent material exhibiting a width, transversally measured to said prevalent direction of development of the continuous transparent tape (3''), smaller than a corresponding width of the first paper layer (2) .
22. Composite layer according to any of previous claims 16 to 19, wherein said second coating layer (3) of transparent material provided for each of said apertures (5) comprises a continuous tape (3''') of transparent material having a prevalent direction of development and fixedly applied to the first paper layer (2) to cover completely a plurality of said apertures (5), said continuous tape (3''') of transparent material exhibiting a width, transversally measured to said prevalent direction of development of the continuous transparent tape (3''')/ substantially equal to a corresponding width of the paper layer (2) .
PCT/IT2009/000331 2009-07-27 2009-07-27 Method and apparatus for making a composite tape for packaging foodstuffs WO2011013147A1 (en)

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Application Number Priority Date Filing Date Title
PCT/IT2009/000331 WO2011013147A1 (en) 2009-07-27 2009-07-27 Method and apparatus for making a composite tape for packaging foodstuffs
SM201200005T SMP201200005T2 (en) 2009-07-27 2012-02-15 Method and plant for the production of a composite belt for the packaging of food products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2009/000331 WO2011013147A1 (en) 2009-07-27 2009-07-27 Method and apparatus for making a composite tape for packaging foodstuffs

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WO (1) WO2011013147A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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CH659046A5 (en) * 1986-05-01 1986-12-31 Stewo Ag Werthenstein Packaging bag
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Publication number Priority date Publication date Assignee Title
US11554248B1 (en) 2018-07-19 2023-01-17 Neptune Medical Inc. Rigidizing devices
US11724065B2 (en) 2018-07-19 2023-08-15 Neptune Medical Inc. Nested rigidizing devices

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