EP3275799A1 - Durchgehender gemischter schlauch zur formung von beuteln und dadurch erhaltene beutel für gartenbauliche oder ähnliche produkte - Google Patents

Durchgehender gemischter schlauch zur formung von beuteln und dadurch erhaltene beutel für gartenbauliche oder ähnliche produkte Download PDF

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Publication number
EP3275799A1
EP3275799A1 EP17183318.9A EP17183318A EP3275799A1 EP 3275799 A1 EP3275799 A1 EP 3275799A1 EP 17183318 A EP17183318 A EP 17183318A EP 3275799 A1 EP3275799 A1 EP 3275799A1
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EP
European Patent Office
Prior art keywords
band
section
joined
lateral
joining
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.)
Withdrawn
Application number
EP17183318.9A
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English (en)
French (fr)
Inventor
Juan Carlos De Clasca Cabré
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Preformados Tubulares SL
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Preformados Tubulares SL
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Filing date
Publication date
Application filed by Preformados Tubulares SL filed Critical Preformados Tubulares SL
Publication of EP3275799A1 publication Critical patent/EP3275799A1/de
Withdrawn legal-status Critical Current

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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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/04—Windows or other apertures, e.g. for viewing 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/34—Containers, 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
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/34—Containers, 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
    • B65D85/345—Containers, 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

Definitions

  • the present invention relates to a continuous mixed tube for forming bags especially intended for containing horticultural or similar products, the structural configuration of which facilitates the manufacturing and winding process thereof, in addition to improving the presentation features of the final product to the public.
  • the present invention also relates to a bag for horticultural or similar products obtained from said continuous mixed tube.
  • Continuous tubes for forming bags also known as preformed tubes
  • preformed tubes have resulted in a major advance in the food packaging industry in general, and especially in that of horticultural and similar products. These tubes are supplied wound onto reels for their subsequent loading into the packaging machines.
  • the machine is fed from the preformed tube in order to carry it continuously and automatically to the filling station, in which the bag is formed and filled with the product in subsequent stations.
  • the bag forming process usually involves heat sealing two transversal strips of the continuous tube, which end up forming the base and the mouth of the bag.
  • the mouth can be completed with other transportation elements, such as handles, added during the sealing of the mouth, or formed by means of the die-cutting thereof.
  • documents ES2192962A1 and ES2282019A1 a few examples of these continuous tubes can be seen, as well as the manufacturing process thereof.
  • Document ES1143035U shows a continuous tube for forming bags, especially designed for the production of bags with a rustic appearance.
  • Said tube is comprised of a front band and a back band, laterally joined by two V-shaped lateral bands, each of which in turn is formed by two separable portions joined to each other by means of glue or adhesive.
  • Said lateral bands are joined to the front and back bands by their longitudinal ends, leaving the entire central portion thereof free to form the base and the mouth of the bag by means of heat sealing.
  • the front and back bands have a sheet configuration, made up of an outer sheet and an inner sheet of different material, the melting temperature of the outer sheet being greater than the melting temperature of the inner sheet material.
  • the melting of the inner sheets is achieved.
  • One of the materials that meets these requirements is laminated paper.
  • This type of paper has the disadvantage of being fairly complex and expensive. Likewise, it is the paper itself that must resist the weight of the packaged product in order to avoid tearing, such that the strength of the bag can only be enhanced by increasing the thickness or weight of the paper. For example, a paper weight of 90 gr/m 2 and a plastic film weight of 15 gr/m 2 enable having 500 meters of continuous tube in a reel with a diameter of 55 cm, from which about 1,100 bags can be obtained.
  • each of the longitudinal joints between the different elements that make up this tube (specifically, the joints between the lateral bands and the front and back bands, as well as the joints between the separable portions that form each of the lateral bands) are made through a single strand or strip of glue having a width of about 5 to 6 mm. Therefore, they are all Y-joints (four in the corners and two between the separable portions of the lateral bands) that offer little resistance to cutting or shearing stress, favoring the tearing thereof and reducing the resistance of the bag.
  • the present invention resolves the previously described problems by means of a continuous mixed tube for forming bags, the configuration of which enables:
  • the present invention relates to a continuous mixed tube for forming bags, especially with a rustic appearance.
  • Said tube is comprised of a front band and a back band made of paper, joined laterally by a first lateral band and a second lateral band made of plastic.
  • paper extends to any simple or composite material, such as paper, laminated paper, cardboard, etc.
  • plastic extends to any simple or composite material, such as polyethylene, polypropylene, etc.
  • the bands that make up the tube can also contain windows or openings for displaying the product, spaced along said tube, and covered by translucent or transparent bands of mesh or plastic sheets.
  • the first lateral band is made up of a first folding section from which a first joining section joined to the front band and a second joining section joined to the back band extend.
  • the second lateral band is made up of a second folding section from which a third joining section joined to the front band and a fourth joining section joined to the back band extend.
  • the first and the third joining section extend respectively from a first front end area and a second front end area of the front band (close to the longitudinal ends of the front band), to a central front area thereof (close to the central shaft of said band).
  • the second and the fourth joining section extend respectively from a first back end area and a second back end area of the back band (close to the longitudinal ends of the back band), to a central back area thereof (close to the central shaft of said band).
  • the front band and the back band are reinforced by an additional layer or sheet of plastic that practically extends throughout the central portion of said bands. This reinforcement carried out by the joints of the lateral bands allows reducing the weight of the paper, and at the same time, avoids the tearing thereof. In turn, it also ensures that the clamps that open the mouth of the tube during product packaging do not damage the front and back bands.
  • the present invention makes it possible to avoid the use of laminated paper, by replacing it with plain paper.
  • said plain paper is coated on the inner face thereof by the joining sections of the lateral bands, which can be made of high-density polyethylene (HDPE).
  • HDPE high-density polyethylene
  • LDPE low-density polyethylene
  • the advantage of being able to use high-density polyethylene (HDPE) is that it maintains the orientation of the carbon and oxygen chains, gaining in resistance.
  • low-density polyethylene (LDPE) weakens and loses resistance in vulcanization processes.
  • the lateral bands can make up a single element or independent elements.
  • the lateral bands are two independent elements that are provided separately during the manufacturing process of the tube for the subsequent joining thereof to the back and front bands. Nevertheless, according to a first particular embodiment, said lateral bands make up a single body, longitudinally open or closed.
  • the lateral bands can be supplied pre-printed with the characteristics of the product, the information of the manufacturer and other commercial information, etc.
  • each of the lateral bands preferably has an M-shaped (or W-shaped) configuration that facilitates said folding, while increasing the resistance of the resulting bag.
  • the lateral bands are arranged facing each other, making up two opposing M's with high resistance to cutting or shearing stresses.
  • each of the folding sections has a V-shaped configuration with the vertex thereof oriented towards the inside of the tube, in order to make a flat-bottom bag.
  • said folding sections can also be arranged towards the outside of the tube in order to facilitate a method for printing the lateral bands, performed during the formation of the tube.
  • the joining sections are joined to the front band and to the back band by means of gluing or heat sealing.
  • Each of the joining sections has a free section extending from the folding section to a first strand or strip of glue that joins the joining section to the end area.
  • each of the joining sections has a fixed section extending from the first strand or strip of glue to a second strand or strip of glue that joins the joining section to the central area.
  • the strands of glue may be a few millimeters wide (for example, 5.6 mm), while the strips of glue may be several centimeters wide (for example, 2.5 cm).
  • the strip of glue may extend from the end area to the central area of the front and/or back band, thus making up one same strip of glue or adhesive, instead of two.
  • the folding sections can be provided with macro or micro perforations.
  • the present invention relates to a bag for horticultural or similar products, made up of a front band and a back band made of paper, joined laterally by a first lateral band and a second lateral band made of plastic, and joined transversally in order to make up a base and a mouth of said bag.
  • the first lateral band is made up of a first folding section from which a first joining section joined to the front band and a second joining section joined to the back band extend.
  • the second lateral band is made up of a second folding section from which a third joining section joined to the front band and a fourth joining section joined to the back band extend.
  • the first and the third joining section extend respectively from a first front end area and a second front end area of the front band to a central front area thereof.
  • the second and the fourth joining section extend respectively from a first back end area and a second back end area of the back band to a central back area thereof.
  • the front band and the back band are reinforced by an additional layer or sheet of plastic that extends practically throughout the central portion of said bands.
  • the lateral bands may make up a single element or independent elements, and be printed with the characteristics of the product, the information of the manufacturer and other commercial information, etc.
  • the lateral bands preferably have an M-shaped (or W-shaped) configuration that facilitates folding, while increasing the resistance of the bag.
  • the lateral bands are arranged facing each other making up two opposing M's with high resistance to cutting or shearing stresses.
  • each of the folding sections has a V-shaped configuration with the vertex thereof oriented towards the inside of the tube in order to form a flat-bottom bag.
  • said folding sections can also be arranged towards he outside of the tube in order to facilitate a method for printing the lateral bands, performed during the formation of the tube.
  • the joining sections are joined to the front band and to the back band by means of gluing or heat sealing.
  • Each of the joining sections has a free section extending from the folding section to a first strand or strip of glue that joins the joining section to the end area.
  • each of the joining sections has a fixed section extending from the first strand or strip of glue to a second strand or strip of glue that joins the joining section to the central area.
  • the strands of glue may be a few millimeters wide (for example, 5.6 mm), while the strips of glue may be several centimeters wide (for example, 2.5 cm).
  • the strip of glue may extend from the end area to the central area of the front and/or back band, thus making up one same strip of glue or adhesive, instead of two.
  • the folding sections can be provided with macro or micro perforations.
  • Figure 1 shows a perspective view of the continuous mixed tube (1) for forming bags (100) of the present invention wound around a reel.
  • said tube (1) is comprised of a front band (2) and a back band (3) made of paper, joined laterally by a first lateral band (4) and a second lateral band (5) made of plastic.
  • Figure 2 shows a schematic transverse cross section of the tube of Figure 1 , in which the structural configuration thereof is more clearly seen.
  • the first lateral band (4) is made up of a first folding section (4a) from which a first joining section (4b) joined to the front band (2) and a second joining section (4c) joined to the back band (3) extend.
  • the second lateral band (5) is made up of a second folding section (5a) from which a third joining section (5b) joined to the front band (2) and a fourth joining section (5c) joined to the back band (3) extend.
  • the first and the third joining section (4b, 5b) extend respectively from a first front end area (2A) and a second front end area (2B) of the front band (2) to a central front area (2C) thereof.
  • the second and the fourth joining section (4c, 5c) respectively extend from a first back end area (3A) and a second back end area (3B) of the back band (3) to a central back area (3C) thereof.
  • the front band (2) and the back band (3) are reinforced by an additional layer or sheet of plastic that extends practically throughout the central portion of said bands (2, 3).
  • the lateral bands (4, 5) are separated from each other, making up two independent elements that are provided separately during the manufacturing process of the tube (1) for the subsequent joining thereof to the front (2) and back (3) bands.
  • Each of the lateral bands (4, 5) has an M-shaped configuration that facilitates the folding of the tube (1), while increasing the resistance of the resulting bag (100).
  • the lateral bands (4, 5) are arranged facing each other making up two opposing M's with high resistance to cutting or shearing stresses.
  • each of the folding sections (4a, 5a) has a V-shaped configuration with the vertex thereof oriented towards the inside of the tube (1), in order to form a flat-bottom bag.
  • FIG 3 shows a schematic transverse cross section of the tube of Figure 1 , in unfolded position, before carrying out filling of the product.
  • the joining sections (4b, 4c, 5b, 5c) are joined to the front band (2) and to the back band (3) by means of glue.
  • Each of the joining sections (4b, 4c, 5b, 5c) has a free section (41 b, 41 c, 51 b, 51 c) extending from the folding section (4a, 5a) to a first strand or strip of glue (43b, 43c, 53b, 53c) that joins the joining section (4b, 4c, 5b, 5c) to the end area (2A, 2B, 3A, 3B).
  • each of the joining sections (4b, 4c, 5b, 5c) has a fixed section (42b, 42c, 52b, 52c) extending from the first strand or strip of glue (43b, 43c, 53b, 53c) to a second strand or strip of glue (44b, 44c, 54b, 54c) that joins the joining section (4b, 4c, 5b, 5c) to the central area (2C, 3C).
  • the bellows of the tube (1) can be easily adjusted by varying the distance of the first strands or strips of glue (43b, 43c, 53b, 53c) with respect to the respective longitudinal ends of the front (2) and back (3) bands.
  • the maximum deployment of the first lateral band (4) corresponds to the total length that sections 41 b, 4a and 41c make up
  • the maximum deployment of the second lateral band (5) corresponds to the total length that sections 51 b, 5a and 51c make up. Therefore, by increasing the length of the free sections (41 b, 41 c, 51 b, 51 c) the bellows of the tube (1) and/or of the bag (100) are increased.
  • the bellows of the tube (1) and/or of the bag (100) are reduced. These aspects may be especially useful for using the tube (1) in existing machines with width limitations in the opening of the mouth of the tube (1).
  • the folding sections (4a, 5a) are provided with micro-perforations (8) for airing the product.
  • Figure 4 shows a schematic transverse cross section of the tube of Figure 1 , according to a second embodiment.
  • the first lateral band (4) and the second lateral band (5) are joined together, making up a single longitudinally closed element.
  • Figure 5 shows a schematic transverse cross section of the tube from Figure 1 , according to a third embodiment.
  • the first lateral band (4) and the second lateral band (5) are joined together, making up a single longitudinally open element, given that the ends of the resulting lateral band do not join together.
  • Figure 6 shows a schematic transverse cross section of the tube (1) for forming bags of the present invention, according to a fourth embodiment.
  • the first lateral band (4) and the second lateral band (5) are arranged towards the outside of the tube (1), in order to facilitate a printing method of the lateral bands performed during the formation of the tube (1).
  • FIG 7 shows a perspective view of a bag (100) for horticultural products formed by means of the tube (1) of the present invention according to the first embodiment thereof.
  • Said bag (100) is comprised of a front band (2) and a back band (3) made of paper, laterally joined by a first lateral band (4) and a second lateral band (5) made of plastic, and transversally joined to make up a base (101) and a mouth (102) of said bag (100).
  • the first lateral band (4) is made up of a first folding section (4a) from which a first joining section (4b) joined to a front band (2) and a second joining section (4c) joined to a back band (3) extend.
  • the second lateral band (5) is made up of a second folding section (5a) from which a third joining section (5b) joined to the front band (2) and a fourth joining section (5c) joined to the back band (3) extend.
  • the first and the third joining section (4b, 5b) extend respectively from a first front end area (2A) and a second front end area (2B) of the front band (2) to a central front area (2C) thereof.
  • the second and the fourth joining section (4c, 5c) extend respectively from a first back end area (3A) and a second back end area (3B) of the back band (3) to a central back area (3C) thereof.
  • the front band (2) and the back band (3) are reinforced by an additional layer or sheet of plastic that extends practically throughout the central portion of said bands (2, 3).
  • the lateral bands (4, 5) preferably have an M-shaped configuration that facilitates the folding and increases the resistance of the bag.
  • the lateral bands (4, 5) are arranged facing each other making up two opposing M's with high resistance to cutting or shearing stresses.
  • each of the folding sections (4a, 5a) has a V-shaped configuration with the vertex thereof oriented towards the inside of the tube, in order to form a flat-bottom bag.
  • the joining sections (4b, 4c, 5b, 5c) are joined to the front band (2) and to the back band (3) by means of gluing.
  • Each of the joining sections (4b, 4c, 5b, 5c) has a free section (41 b, 41 c, 51 b, 51 c) extending from the folding section (4a, 5a) to a first strand or strip of glue (43b, 43c, 53b, 53c) that joins the joining section (4b, 4c, 5b, 5c) to the end area (2A, 2B, 3A, 3B).
  • each of the joining sections (4b, 4c, 5b, 5c) has a fixed section (42b, 42c, 52b, 52c) extending from the first strand or strip of glue (43b, 43c, 53b, 53c) to a second strand or strip of glue (44b, 44c, 54b, 54c) that joins the joining section (4b, 4c, 5b, 5c) to the central area (2C, 3C).
  • the folding sections (4a, 5a) are provided with micro-perforations (8) for airing the product.
  • FIG 8A shows a partial schematic view of the tube (1) for forming bags of the present invention, according to a fifth embodiment.
  • the front band (2) of the tube (1) comprises a plurality of windows or openings (9) for displaying of the product, spaced along said tube (1).
  • the windows (9) are made by die cutting the front band (2) made of paper.
  • translucent or transparent joining sections (4b, 5b) are used, which enable displaying the product therethrough.
  • the joining sections (4b, 5b) make up a portion of the independent lateral bands (4, 5), the longitudinal ends thereof are closely joined or superimposed with one another, but at the same time they let air pass through. This allows ventilating the product without having to pierce the bag (100).
  • Figure 8B shows a bag (100) for horticultural products formed by means of the tube of Figure 8A .
  • the window (9) enables displaying the product through a plastic sheet (91).
  • Figure 9A shows a partial schematic view of the tube (1) for forming bags of the present invention, according to a sixth embodiment.
  • the front band (2) and the back band (3) are made with 50gr/m 2 paper
  • the lateral bands (4, 5) are made of transparent low-density polyethylene (LDPE).
  • LDPE transparent low-density polyethylene
  • the tube (1) may further comprise a cutting mark (94), which is useful for indicating where to cut the tube (1) during the process of forming the bag (100).
  • Figure 9B shows a bag (100) for horticultural products formed by means of the tube of Figure 9A .
  • the transparent strip (93) enables displaying the product therethrough.
  • the bag (100) has a length of 510 mm, a width of 170 mm and bellows of 210 mm.
EP17183318.9A 2016-07-29 2017-07-26 Durchgehender gemischter schlauch zur formung von beuteln und dadurch erhaltene beutel für gartenbauliche oder ähnliche produkte Withdrawn EP3275799A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201631049A ES2600306B1 (es) 2016-07-29 2016-07-29 Tubular mixto continuo para la formación de bolsas, y bolsa para productos hortofrutícolas o similares obtenida a partir del mismo

Publications (1)

Publication Number Publication Date
EP3275799A1 true EP3275799A1 (de) 2018-01-31

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EP17183318.9A Withdrawn EP3275799A1 (de) 2016-07-29 2017-07-26 Durchgehender gemischter schlauch zur formung von beuteln und dadurch erhaltene beutel für gartenbauliche oder ähnliche produkte

Country Status (2)

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EP (1) EP3275799A1 (de)
ES (1) ES2600306B1 (de)

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