ES2600306B1 - Mixed continuous tubular for the formation of bags, and bag for horto fruit or similar products obtained from the same - Google Patents

Mixed continuous tubular for the formation of bags, and bag for horto fruit or similar products obtained from the same Download PDF

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Publication number
ES2600306B1
ES2600306B1 ES201631049A ES201631049A ES2600306B1 ES 2600306 B1 ES2600306 B1 ES 2600306B1 ES 201631049 A ES201631049 A ES 201631049A ES 201631049 A ES201631049 A ES 201631049A ES 2600306 B1 ES2600306 B1 ES 2600306B1
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Spain
Prior art keywords
band
dorsal
bag
tubular
zone
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Application number
ES201631049A
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Spanish (es)
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ES2600306A1 (en
Inventor
Juan Carlos DE CLASCA CABRÉ
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PREFORMADOS TUBULARES SL
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PREFORMADOS TUBULARES SL
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Priority to ES201631049A priority Critical patent/ES2600306B1/en
Publication of ES2600306A1 publication Critical patent/ES2600306A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D31/00Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D31/00Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/02Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/04Windows or other apertures, e.g. for viewing contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D85/00Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/34Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes
    • B65D85/345Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes having a meshed or apertured closure to allow contents to breathe

Abstract

Continuous mixed tubular for the formation of bags, consisting of a frontal band (2) and a dorsal band (3) of paper, joined laterally by lateral bands (4, 5) of plastic. The side bands (4, 5) are formed by folding sections (4a, 5a) of which extend connecting sections (4b, 5b) attached to the front band (2), and joining sections (4c, 5c ) attached to the dorsal band (3). The first and third connecting section (4b, 5b) extend respectively from a first front end zone (2A) and a second front end zone (2B) of the front band (2), to a central front zone (2C) . The second and the fourth connecting section (4c, 5c) extend respectively from a first dorsal end zone (3A) and a second dorsal end zone (3B) of the dorsal band (3), to a dorsal central zone (3C) .

Description

Field of the Invention
The present invention relates to a continuous mixed tubular for the formation of bags, especially intended to contain fruit and vegetable products or the like, whose structural configuration facilitates the manufacturing and winding process thereof, in addition to improving the performance of presentation to the public of the final product .
The present invention also relates to a bag for fruit and vegetable products or the like obtained from said continuous mixed tubular.
BACKGROUND OF THE INVENTION Continuous tubular for bag formation, also known as preformed tubular, have been an important advance in the food packaging industry in general, and especially in the fruit and vegetable products and the like. These tubulars are supplied rolled in coils for later loading in the packaging machines. During the packaging process, the machine is fed from the preformed tubular to carry it continuously and automatically to the filling station, in which the bag is formed and the product is filled in successive stations. The process of forming the bag usually involves the heat sealing of two transverse strips of the continuous tubular, which end up forming the base and the mouth of the bag. In turn, the mouth can be completed with other transport elements, such as handles, added during the sealing of the mouth, or formed by punching it. In the ES2192962A1 and ES2282019A1 documents some examples of these continuous tubular can be seen, as well as the manufacturing process thereof.
At the same time, the requirements of the final consumers, in terms of the presentation of the packaged product and in terms of having more information
of the same (origin, distributor, etc.) have been increasing in recent times. In this sense, one of the current trends is to package some fruit and vegetable products, such as potatoes, in rustic-looking bags, which generate a greater interest on consumers. These bags are usually opaque, usually
5 made with paper-based or paper-like materials, and often containing in their interior remains derived from the collection of the product, such as soil, so that the consumer has the feeling that it is a greener product.
10 Document ES1143035U shows a continuous tubular for bag formation, specially designed for the production of rustic-looking bags. Said tubular is constituted by a frontal band and a dorsal band, joined laterally by two lateral bands of "V" configuration, each of which is in turn formed by two separable portions joined together by
15 glue or adhesive. Said side bands are joined to the front and back bands by their longitudinal ends, leaving the entire central part of them free to form the base and the mouth of the bag by heat welding. For this, the front and back bands have a laminar configuration, formed by an outer sheet and an inner sheet of different material, the melting temperature of the
20 outer sheet material greater than the melting temperature of the inner sheet material. So, by applying heat to the outer sheets, the fusion of the inner sheets is achieved. One of the materials that meets these requirements is laminated paper.
25 This type of paper has the disadvantage of being quite complex and expensive. Likewise, it is the paper itself that must resist the weight of the packed product on its own to avoid tearing, so that the resistance of the bag can only be increased by increasing the thickness or weight of the paper. For example, a paper weight of 90 gr / m2 and a weight of plastic film of 15 gr / m2 allow
30 have 500 meters of continuous tubular in a coil of 55 cm in diameter, from which about 1,100 bags can be obtained.
In addition, since the lateral bands are attached to the front and dorsal bands only by their longitudinal ends, it is necessary to increase the width of
union between these elements to guarantee the strength of these joints. This causes a decrease in the bellows of the bag and, consequently, a smaller capacity thereof to a given length. Likewise, each of the longitudinal joints between the different elements that make up this tubular (specifically, the joints between the side bands and the front and back bands, as well as the joints between the separable portions themselves that make up each of the side bands ) are made through a single cord or tail strip that has a width of about 5 to 6 mm. Therefore, all of them are "Y" joints (four in the corners and two between the separable portions of the side bands) that offer little resistance to shear or shear forces, favoring the tearing of the same and reducing the resistance of the bag.
The present invention solves the problems described above by means of a continuous mixed tubular for bag formation, the configuration of which allows:
reduce the weight of plasticized paper (for example; by using a paper weight of 50 gr / m2 and a weight of plastic film of 3 gr / m2), and even allowing the use of plasticized paper for some applications; increase the capacity of the coil (for example; a 55 cm diameter coil for making bags of 3 kilos potatoes can contain 1,000 meters of continuous tubular with the weight indicated above, from which about 2,200 bags can be obtained); increase the strength of the bag without increasing the thickness of the bag, using wider joints (for example; 25 mm) or multiple tail cords (for example; 5.6 mm) that better resist shear or shear stresses; increase the capacity of the bag to a given length, increasing the bellows of the side bands; facilitate the manufacturing process of the tubular, making it easier, faster and more efficient; obtain a consumable compatible with existing machines; facilitate the product packaging procedure, allowing its continuous realization automatically, and with a smaller number of processes, which increase the working speed; and facilitate the adaptability of the tubular to the requirements of the final product, with a longitudinal symmetry that allows to form pockets of greater or lesser capacity.
Description of the invention According to a first protection object, the present invention relates to a continuous mixed tubular for the formation of bags, especially of rustic appearance. Said tubular is constituted by a frontal band and a dorsal paper band, joined laterally by a first side band and a second plastic side band.
The term "paper" extends to any simple or composite material, such as paper, plasticized paper, cardboard paper, elc. The term "plastic" extends to any simple or composite material, such as polyethylene, polypropylene, etc. Likewise, the bands that form the tubular can also contain windows or openings for the display of the product, spaced along said tubular, and covered by strips of mesh or sheets of translucent or transparent plastic.
The first side band is formed by a first folding section of which a first connecting section attached to the front band is extended, and a second connecting section joined to the dorsal band. In turn, the second lateral band is formed by a second folding section of which a third connecting section is attached to the front band, and a fourth connecting section connected to the dorsal band.
The first and the third connecting section extend respectively from a first front end zone and a second front end zone of the front band (close to the longitudinal ends of the front band), to a front central zone thereof (close to the central axis of said band). In turn, the second and fourth connecting section extend respectively from a first dorsal end zone and a second dorsal end zone of the dorsal band (near the longitudinal ends of the dorsal band), to a dorsal central zone of the same (near the central axis of said band). In this way, the front band and the dorsal band are reinforced by an additional layer or sheet of plastic that extends practically throughout the central part of said bands. This reinforcement carried out by the joints of the sidebands allows reducing the weight of the paper and, at the same time, prevents tearing. In turn, it also ensures that the clamps that open the mouth of the tubular during product packaging do not damage the front and back bands.
Likewise, as mentioned above, the present invention makes it possible to avoid the use of plasticized paper, replacing it with simple paper. During the manufacturing process of the tubular, said simple paper is covered on its inner face by the connecting sections of the side bands, which can be made of high density polyethylene (PEHD). Thus, it is as if a simple paper plasticization occurred during the tubular creation process, with the difference that said plasticization is not carried out by vulcanizing a low density polyethylene (HAIR), just as with paper conventional plasticized. The advantage of being able to use high density polyethylene (PEHO) is that
15 maintains the orientation of the carbon and oxygen chains, gaining resistance. In contrast, low density polyethylene (HAIR) in vulcanizing processes weakens and loses resistance.
The sidebands may constitute a single element, or elements
20 independent. Preferably, the side bands constitute two independent elements that are provided separately during the manufacturing process of the tubular for subsequent attachment to the dorsal and frontal bands. However, according to a first particular embodiment, said lateral bands form a single body, open or closed longitudinally. The side bands can
25 be supplied previously printed with the characteristics of the product, the manufacturer's data and other commercial information, etc.
The side bands join the front and back bands to close the tubular longitudinally, but at the same time they also provide the folding means that allow said tubular to be wound in a coil optimizing its capacity (tubular meters / coil), and favoring its subsequent unwinding during the shaping of the bag. For this, each of the side bands preferably has a "M" (or "W") configuration that facilitates said folding, and at the same time increases the resistance of the resulting bag. So the bands
sides are arranged facing each other forming two "M" opposed with a large
shear or shear stress resistance. In turn, each of the
Folding sections have a "V" shaped configuration, with its vertex
oriented inside the tubular, to form an "English folding".
5
Alternatively, said bending sections can also be arranged outwards.
of the tubular to facilitate a printing procedure of the led sidebands
carried out during tubular formation.
Preferably, the connecting sections are connected to the front band and to the
1 o
back band by gluing or heat welding. Each of the connecting sections
It has a free section that extends from the folding section, to a first cord
or tail strip that joins the stretch of union to the extreme zone. Also, each of
the connecting sections have a fixed section that extends from the first cord or strip
of tail, until a second cord or strip of tail that joins the section of union to the zone
fifteen
central. The tail cords may have a width of a few millimeters
(for example; 5.6 mm), while the tail stripes can be several
centimeters (for example; 2.5 cm). According to a particular case of realization,
the tail strip can be extended from the extreme zone to the central zone of the
front and / or dorsal band, then constituting the same glue or adhesive strip,
twenty
instead of two
For those food products that require a certain aeration, the sections of
Folding can be provided with macro or micro perforations.
25
According to a second object of protection, the present invention relates to
a bag for fruit and vegetable products or similar, consisting of a front band
and a dorsal paper band, joined laterally by a first side band and a
second plastic side band, and transversely joined to form a base
and a mouth of said bag.
30
The first side band is formed by a first folding section of the
which extend a first connecting section attached to the front band, and a second
junction section attached to the dorsal band. In turn, the second sideband is
It is formed by a second folding section of which a third is extended
joint section attached to the front band, and a fourth joint section attached to the dorsal band.
The first and the third connecting section extend respectively from a first front end zone and a second front end zone of the front band, to a front central zone thereof. In turn, the second and fourth connecting section extend respectively from a first dorsal end zone and a second dorsal end zone of the dorsal band, to a dorsal central zone thereof. In this way, the front band and the dorsal band are reinforced by an additional layer or sheet of plastic that extends practically throughout the central part of said bands. Likewise, when the bags are stacked after the packaging process, the product contained in the same presses said joints making them more resistant.
The sidebands may constitute a single independent element or elements, and be printed with the characteristics of the product, the manufacturer's data and other commercial information, etc.
The side bands preferably have a "M" (or "W") shaped configuration that facilitates folding and increases the strength of the bag. Thus, the side bands are arranged facing each other forming two "M" opposite with great resistance to shear or shear stresses. In turn, each of the folding sections has a "V" shaped configuration, with its vertex oriented inside the tubular, to form an "English folding". Alternatively, said folding sections can also be arranged outside the tubular to facilitate a printing process of the side bands carried out during the formation of the tubular.
Preferably, the connecting sections are connected to the front band and the dorsal band by gluing or heat sealing. Each of the connecting sections has a free section that extends from the folding section, to a first cord
or tail strip that joins the stretch of union to the extreme zone. Likewise, each of the connecting sections has a fixed section that extends from the first cord or tail strip, to a second cord or tail strip that joins the joint section to the central zone. The tail cords may have a width of a few millimeters (for example; 5.6 mm), while the tail strips may be several centimeters (for example; 2.5 cm). According to a particular embodiment, the glue strip can extend from the end zone to the central area of the front and / or dorsal band, then constituting the same glue or adhesive strip, instead of two.
For those food products that require a certain aeration, the folding sections may be provided with macro or micro perforations.
BRIEF DESCRIPTION OF THE DRAWINGS Next, a series of drawings that help to better understand the invention and that expressly relate to six embodiments of said invention that are presented as non-limiting examples thereof are described very briefly.
Figure 1 shows a perspective view of a coil wound with the continuous mixed tubular for the formation of bags of the present invention
Figure 2 shows a schematic cross-section of the tubular of Figure 1, according to a first embodiment and in folded position.
Figure 3 shows a schematic cross section of the tubular of Figure 1, according to a first embodiment and in an unfolded position.
Figure 4 shows a schematic cross-section of the tubular for the formation of bags of the present invention, according to a second embodiment.
Figure 5 shows a schematic cross-section of the tubular for the formation of bags of the present invention, according to a third embodiment.
Figure 6 shows a schematic cross-section of the tubular for the formation of bags of the present invention, according to a fourth embodiment.
Figure 7 shows a perspective view of a bag of fruit and vegetable products formed by the tubular of the present invention.
Figure 8A shows a schematic partial view of the tubular for the formation of bags of the present invention, according to a fifth embodiment.
Figure 88 shows a bag of fruit and vegetable products formed by the tubular of Figure BA.
Figure 9A shows a schematic partial view of the tubular for the formation of bags of the present invention, according to a sixth embodiment.
Figure 98 shows a bag of fruit and vegetable products formed by the tubular of Figure 9A.
DETAILED DESCRIPTION OF THE INVENTION Figure 1 shows a perspective view of a coil wound with the continuous mixed tubular (1) for the formation of bags (100) of the present invention. As can be seen, said tubular (1) is constituted by a front band (2) and a dorsal band (3) of paper, joined laterally by a first side band (4) and a second side band (5) of plastic .
Figure 2 shows a schematic cross-section of the tubular of Figure 1, in which the structural configuration thereof is seen more clearly. As can be seen, the first side band (4) is formed by a first folding section (4a) of which a first connecting section (4b) joined to the front band (2), and a second section of junction (4c) attached to the dorsal band (3). In turn, the second side band (5) is formed by a second folding section (5a) of which a third connecting section (5b) joined to the front band (2), and a fourth connecting section are extended. (Sc) attached to the dorsal band (3).
The first and third connecting section (4b, Sb) extend respectively from a first front end zone (2A) and a second front end zone (28) of the front band (2), to a central front zone (2C) Of the same. In turn, the
second and fourth connecting section (4c, Se) respectively extend from a first dorsal end zone (3A) and a second dorsal end zone (38) of the dorsal band (3), to a dorsal central zone (3C) of the same. In this way, the front band (2A) and the dorsal band (38) are reinforced by an additional layer or sheet of plastic that extends practically throughout the central part of said bands (2A, 28).
According to the present example, the side bands (4, 5) are separated from each other, constituting two independent elements that are provided separately during the manufacturing process of the tubular (1) for subsequent attachment to the frontal bands (2) and dorsal (3). Each of the side bands (4, 5) has a "M" shaped configuration that facilitates the folding of the tubular (1), and at the same time increases the strength of the bag (100). Thus, the lateral bands (4, 5) are arranged facing each other forming two "M" opposite with great resistance to shear or shear forces. In turn, each of the folding sections (4a, 5a) has a uV 'shaped configuration, with its vertex oriented inside the tubular (1), to form an "English folding".
Figure 3 shows a schematic cross-section of the tubular of Figure 1 in the unfolded position, before filling the product. As can be seen, the connecting sections (4b, 4c, 5b, 5c) are attached to the front band
(2) and to the dorsal band (3) by gluing. Each of the connecting sections (4b, 4c, 5b, 5c) has a free section (41b, 41c, 51b, 51c) that extends from the folding section (4a, 5a), to a first cord or tail strip (43b, 43c, 53b, 53c) that joins the junction section (4b, 4c, 5b, 5c) to the extreme zone (2A, 28, 3A, 38). Likewise, each of the connecting sections (4b, 4c, 5b, 5c) has a fixed section (42b, 42c, 52b, 52c) that extends from the first cord or tail strip (43b, 43c, 53b, 53c) , up to a second cord or tail strip (44b, 44c, 54b, 54c) that joins the connecting section (4b, 4e, 5b, 5e) to the central zone (2C, 3C).
The bellows of the tubular (1), or opening capacity thereof, can be easily adjusted by varying the distance of the first cords or tail strips (43b, 43c, 53b, 53c) from the respective longitudinal ends of the front bands ( 2) and dorsal (3). Thus, the maximum deployment of the first lateral band (4)
corresponds to the tolal length formed by sections 41 b, 4a and 41 e, while the maximum unfolding of the second lateral band (5) corresponds to the total length formed by sections 51b, 5a and 51c. Therefore, increasing the length of the free sections (41b, 41c, 51b, 51c) increases the bellows of the tubular (1) and / or the bag
5 (100). On the contrary, reducing the length of the free sections (41b, 41c, 51b. 51c) reduces the bellows of the tubular (1) and / or the bag (100). Aspects that may be especially useful for using the tubular (1) in existing machines with width limitations in the opening of the tubular mouth (1).
10 The folding sections (4th, 5th) are provided with micro perforations (8) to aerate the product.
Figure 4 shows a schematic cross-section of the tubular of Figure 1, according to a second embodiment. In this case, the first side band (4) 15 And the second side band (5) are joined together, constituting a single longitudinally closed element.
Figure 5 shows a schematic cross section of the tubular of Figure 1, according to a second embodiment. In this case, the first side band (4)
20 And the second side band (5) are joined together, constituting a single longitudinally open element, since the ends of the resulting side band do not come together.
Figure 6 shows a schematic cross section of the tubular (1) for the
25 bag formation of the present invention, according to a fourth embodiment. In this case, the first side band (4) and the second side band (5) are arranged outside the tubular (1), to facilitate a printing process of the side bands carried out during the formation of the tubular (1) .
Figure 7 shows a perspective view of a bag (100) of fruit and vegetable products formed by the tubular (1) of the present invention according to its first embodiment. Said bag (100) is constituted by a front band (2) and a dorsal band (3) of paper, joined laterally by a first side band (4) and a second side band (5) of plastic, and transversely joined to forming a base (101) and a mouth (102) of said bag (100).
The rest of the characteristics of this bag (100) coincide with those shown in figures 1 to 4. Specifically, the first side band (4) is formed by a first folding section (4a) of which a first section is extended of junction (4b) attached to the front band (2), and a second segment of junction (4c) attached to the dorsal band (3). In turn, the second side band (5) is formed by a second folding section (5a) of which a third connecting section (5b) joined to the front band (2), and a fourth connecting section are extended. (Se) attached to the dorsal band (3).
The first and third connecting section (4b, 5b) extend respectively from a first front end zone (2A) and a second front end zone (28) of the front band (2), to a central front zone (2C) Of the same. In turn, the second and fourth connecting section (4c, 5c) extend respectively from a first dorsal end zone (3A) and a second dorsal end zone (38) of the dorsal band (3), to a central zone dorsal (3C) of it. In this way, the front band (2A) and the dorsal band (38) are reinforced by an additional layer or sheet of plastic that extends practically throughout the central part of said bands (2A, 28).
The side bands (4, 5) have a "M" shaped configuration that facilitates folding and increases the strength of the bag. Thus, the lateral bands (4, 5) are arranged facing each other forming two opposing "M" that have great resistance to shear or shear stresses. In turn, each of the folding sections (4a, 5a) has a "V" shaped configuration, with its vertex oriented inside the tubular, to form an "'English folding".
The connecting sections (4b, 4c, 5b, 5c) are attached to the front band (2) and the back band (3) by gluing. Each of the connecting sections (4b, 4c, 5b, 5c) has a free section (41b, 41c, 51b, 51c) that extends from the folding section (4a, 5a), to a first cord or tail strip (43b, 43c, 53b, 53c) that joins the junction section (4b, 4c, 5b, 5c) to the extreme zone (2A, 28, 3A, 38). Likewise, each of the connecting sections (4b, 4c, Sb, 5c) has a fixed section (42b, 42c, 52b, 52c) that extends from the first cord or tail strip (43b, 43c, 53b, 53c) , up to a second
tail cord or strip (44b, 44c, 54b, 54c) that joins the connecting section (4b, 4c, 5b, Se) to the central area (2C, 3C).
The folding sections (4a, 5a) are provided with micro perforations (8) to aerate the product.
Figure BA shows a schematic partial view of the tubular (1) for the formation of bags of the present invention, according to a fifth embodiment. In this case, the front band (2) of the tubular (1) comprises a plurality of windows or openings (9) for displaying the product, spaced along said tubular (1). The windows (9) are made by punching the front band (2) of paper. In turn, translucent or transparent joining sections (4b, 5b) are used that allow the product to be visualized through them. When the connecting sections (4b, 5b) are part of independent lateral bands (4, 5), their longitudinal ends are very close together or superimposed on each other, but at the same time let the air pass. This allows the product to be ventilated without perforating the bag (100).
Figure 88 shows a bag (100) of fruit and vegetable products formed by the tubular of Figure 8A. The window (9) allows the display of the product through plastic sheet (91).
Figure 9A shows a schematic partial view of the tubular (1) for the formation of bags of the present invention, according to a sixth embodiment. In this case, the front band (2) and the back band (3) are made with 50gr / m2 paper, while the side bands (4, 5) are made of transparent low density polyethylene (HAIR). The printing of said lateral bands (4, 5) generates in each of them two opaque stripes (92) between which a transparent strip is arranged
(93) as a "false window". Said transparent strip (93) can be printed to simulate a mesh.
The tubular (1) can further comprise a cut mark (94), which serves to indicate during the process of forming the bag (100) where to cut the tubular (1).
Figure 98 shows a bag (100) of fruit and vegetable products formed by the tubular of Figure 9A. The transparent strip (93) allows the display of the product through it. The bag (100) according to the present example has a length of 510 mm, a width of 170 mm and a bellows of 210 mm.

Claims (15)

1. Continuous mixed tubular for bag formation, consisting of a front band (2) and a dorsal band (3) of paper, joined laterally by a first band
5 side (4) and a second side band (5) of plastic, where: the first side band (4) is formed by a first folding section (4a) of which a first connecting section (4b) is attached to the front band (2), and a second connecting section (4c) attached to the dorsal band (3); and the second side band (5) is formed by a second section of
10 folding (5a) of which a third connecting section (5b) attached to the front band (2), and a fourth connecting section (5e) attached to the dorsal band (3) are extended;
said tubular (1) characterized in that: the first and third connecting section (4b, 5b) extend respectively from a first frontal end zone (2A) and a second frontal end zone (28) of
15 the front band (2), to a central front area (2C) thereof; and because the second and fourth connecting section (4c, 5c) extend respectively from a first dorsal end zone (3A) and a second dorsal end zone (38) of the dorsal band (3), to a dorsal central zone (3C) of it_
2. Continuous mixed tubular for bag formation according to claim 1, characterized in that the first side band (4) and the second side band (5) are joined together.
3. Continuous mixed tubular for bag formation according to claim 1,
25 characterized in that the first side band (4) and the second side band (5) are separated from each other.
4. Continuous mixed tubular for bag formation according to any of the
claims 1 to 3, characterized in that each of the side bands (4, 5) 30 has a "M" shaped configuration.
5.
Continuous mixed tubular for the formation of bags according to any of claims 1 to 4, characterized in that each of the folding sections (4a, 5a) has a "V" shaped configuration.
6.
Continuous mixed tubular for bag formation according to any one of claims 1 to 5, characterized in that the connecting sections (4b, 4c, 5b, 5e) are attached to the front band (2) and the back band (3) by gluing or
5 heat welding.
7. Continuous mixed tubular for bag formation according to any one of claims 1 to 6, characterized in that each of the connecting sections (4b, 4c, 5b, Se) has a free section (41b, 41c, 51b, 51c ) that extends from the section of
10 folded (4a, 5a), to a first cord or tail stripe (43b, 43c, 53b, 53c) that joins the joint section (4b, 4c, 5b, Se) to the extreme zone (2A, 28, 3A , 38).
8. Continuous mixed tubular for bag formation according to claim 7, characterized in that each of the connecting sections (4b, 4c, Sb, Sc) has a
15 fixed section (42b, 42c, 52b, 52c) that extends from the first cord or tail strip (43b, 43c, 53b, 53c), to a second cord or tail strip (44b, 44c, 54b, 54c) that joins the connecting section (4b, 4e, 5b, 5e) to the central zone (2C, 3C).
9. Continuous mixed tubular for bag formation according to any of the
Claims 1 to 8, characterized in that the folding sections (4a, 5a) comprise perforations (8).
10. Continuous mixed tubular for bag formation according to any one of claims 1 to 9, characterized in that it comprises a window (9) in the
25 minus one of the front (2) and dorsal (3) bands covered with a translucent or transparent sheet (91).
11. Continuous mixed tubular for bag formation according to any of the
Claims 1 to 10, characterized in that the first side band (4) and the second side band (5) are disposed into the tubular (1).
12. Bag for fruit and vegetable products or similar, consisting of a front band
(2)
and a dorsal band (3) of paper, joined laterally by a first lateral band
(4)
and a second side band (5) of plastic, and transversely joined to
forming a base (101) and a mouth (102) of said bag (100), where: the first side band (4) is formed by a first folding section (4a) of which a first connecting section ( 4b) attached to the front band (2), and a second connecting section (4c) attached to the dorsal band (3); and the second side band (5) is formed by a second folding section (5a) of which a third connecting section (5b) joined to the front band (2), and a fourth connecting section (Se) are extended. attached to the dorsal band (3);
said bag (100) characterized in that: the first and the third connecting section (4b, 5b) respectively extend from a first front end zone (2A) and a second front end zone (28) of the front band (2) , to a central front area (2C) thereof; and because the second and fourth connecting section (4c, 5c) extend respectively from a first dorsal end zone (3A) and a second dorsal end zone (3B) of the dorsal band (3), to a dorsal central zone (3C) of it.
13.
Bag for fruit and vegetable products or the like according to claim 12, characterized in that the first side band (4) and the second side band (5) are joined together.
14.
Bag for fruit and vegetable products or the like according to claim 12, characterized in that the first side band (4) and the second side band (5) are separated from each other.
fifteen.
Bag for fruit and vegetable products or similar according to any of claims 12 to 14, characterized in that each of the lateral bands (4, 5) has a UM-shaped configuration "; and that each of the folding sections (4a , 5a) presents a "V" shaped configuration.
16.
Bag for fruit and vegetable products or similar according to any of claims 12 to 15, characterized in that each of the connecting sections (4b, 4c, 5b, 5c) has a free section (41b, 41c, 51b, 51c) that extends from the folding section (4a, 5a), to a first cord or tail strip (43b, 43c, 53b, 53c) that joins the connecting section (4b, 4c, 5b, 5c) to the extreme zone (2A, 2B , 3A, 3B); And because each of the connecting sections (4b, 4c, 5b, 5c) has a fixed section (42b, 42c, 52b, 52c)
 which extends from the first cord or tail strip (43b, 43c, 53b, 53c), to a second cord or tail strip (44b, 44c, 54b, 54c) that joins the joint section (4b,
4e, 5b, 5e) to the central zone (2C, 3C).
ES201631049A 2016-07-29 2016-07-29 Mixed continuous tubular for the formation of bags, and bag for horto fruit or similar products obtained from the same Active ES2600306B1 (en)

Priority Applications (1)

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ES201631049A ES2600306B1 (en) 2016-07-29 2016-07-29 Mixed continuous tubular for the formation of bags, and bag for horto fruit or similar products obtained from the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201631049A ES2600306B1 (en) 2016-07-29 2016-07-29 Mixed continuous tubular for the formation of bags, and bag for horto fruit or similar products obtained from the same
EP17183318.9A EP3275799A1 (en) 2016-07-29 2017-07-26 Continuous mixed tube for forming bags, and bag for horticultural or similar products obtained therefrom

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ES2600306A1 ES2600306A1 (en) 2017-02-08
ES2600306B1 true ES2600306B1 (en) 2017-11-17

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900002595A1 (en) * 2019-02-22 2020-08-22 Gimsa S R L RECYCLABLE PAPER PACKAGING MADE BY AUTOMATIC PACKAGING MACHINES AND RELATED MATERIAL

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2234065A (en) * 1936-04-15 1941-03-04 Owens Illinois Glass Co Collapsible container
CH647209A5 (en) * 1980-05-29 1985-01-15 Papyria Ag Packaging bag, process for the production thereof, packaging material web and use thereof
IT242331Y1 (en) * 1996-02-07 2001-06-14 Netpack S R L Bag structure in sheet and net of plastic material for the containment of loose products, in particular of fruit and vegetables.
DE19749352B4 (en) * 1997-11-07 2012-05-24 Nittel Halle Gmbh Stabilized, cubic, flexible container
EP1908695B1 (en) * 2005-07-06 2012-08-22 Preformados Tubulares, S.L. Method of obtaining a continuous mesh tube which is used to produce bags for vegetable and fruit products or similar products
US20030232161A1 (en) * 2002-06-14 2003-12-18 Paul Lin Poly-woven laminated paper bag with window
US6932508B2 (en) * 2002-12-20 2005-08-23 Smurfit-Stone Container Enterprises, Inc. Positive valve closure for plastic-lined bags and method for making same
DE102012101932A1 (en) * 2012-03-07 2013-09-12 Nordenia Deutschland Halle Gmbh Side gusset bags made of a plastic fabric composite and method for its production
ES1143035Y (en) * 2015-07-24 2015-11-26 Preformados Tubulares S L CONTINUOUS TUBULAR FOR THE FORMATION OF BAGS
ES1144008Y (en) * 2015-09-04 2015-12-16 Preformados Tubulares S L CONTINUOUS TUBULAR FOR THE FORMATION OF BAGS

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ES2600306A1 (en) 2017-02-08

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