• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The object of the invention is a light pallet of reused cardboard having the legs adhered to a loading surface (1). The loading surface (1) is composed of an upper covering (2) and a lower one of cardboard or high-strength paper. The core (3) is formed by reinforcements (4) independent of each other, coming from a mixture of discarded corrugated boards of various types and qualities. The reinforcements (4) have rectangular development of height equal to the thickness of the core (3) and are folded or bent to form tubular-type figures with open bases parallel. The reinforcements (4) are positioned randomly, contact each other when forming the core (3) and are attached with adhesive by the edges of the bases to the coatings (2). The reinforcements (4) are stable against overturning and preferably have the corrugation oriented perpendicular to their base. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2705341A1
    申请号:ES201700720
    申请日:2017-09-22
    公开日:2019-03-22
    发明作者:Sanz Pablo Gomez
    申请人:Sanz Pablo Gomez；
    IPC主号:
    专利说明:

    [0001] Lightweight cardboard pallet reused.
    [0002] Sector of the technique in which the invention is framed
    [0003] The present invention relates to a low cost pallet that can be manufactured from reused corrugated cardboard.
    [0004] State of the art
    [0005] Currently, several patents and utility models are known that are more expensive because they are not manufactured with reused material.
    [0006] In PCT / US2004 / 040373 a single-use pallet is proposed, which has the disadvantage of being complicated to manufacture and assemble and of needing corrugated board sheets manufactured for that purpose.
    [0007] In the document PCT / ES2001000447 a pallet is described in which the legs require 2 additional fixing plates to the loading surface and the gluing of 2 full layers of corrugated cardboard of first use.
    [0008] Explanation of the invention
    [0009] The pallet object of the invention uses corrugated cardboard from the fragmentation of used and discarded packaging as the main raw material.
    [0010] The pallet has a loading surface (1) composed of a core (3) having an upper (2) and lower covering of high strength paper or plain cardboard or corrugated cardboard.
    [0011] The core is formed by reinforcements (4) tubular corrugated cardboard of various qualities and thicknesses, manufactured from flat rectangular cardboard cutouts that have a height equal to the thickness of the core (3). The reinforcements (4) are independent of each other when they are manufactured, and once curved or folded, they take the form of three-dimensional geometric figures with open and parallel bases, which, once grouped, will be joined with adhesive by the edges of both bases to the top and bottom coatings (2). To give a greater resistance to bending, the reinforcements (4) preferably form a pattern such that every fictitious plane perpendicular to the loading surface (1) located in its interior cuts to several reinforcements, avoiding creating lines that favor folding, if An ordered pattern that does not comply with the previous condition will also be valid.
    [0012] The reinforcements (3) are stable against overturning so that they can slide and position grouped in a very simple way when pushed, facilitating the manufacturing process. In addition, the thrust system can group, compress and deform the reinforcements in a plane parallel to the load surface (1), which can increase the number of reinforcements that form the core (3) contributing to a greater resistance of the surface Load (1).
    [0013] The advantages of this pallet compared to other pallets of cardboard or wood are a greater lightness provided by employing hollow reinforcements (4), a lower manufacturing cost to be able to use as waste raw material instead of cardboard chips, a lower environmental impact by avoiding a complete recycling cycle in the factory to produce cardboard sheets and the possibility of automating the manufacture of the surface of loading (1) using a system of automatic gluing of the bases of the reinforcements (4) and a system of feeding of great capacity that pushes in block a set of reinforcements (4) in a channel of the same width that the pallet, without necessity to order them or to position them, to later adhere the coatings (2).
    [0014] BRIEF DESCRIPTION OF THE DRAWINGS
    [0015] Figure 1 shows a light pallet of reused cardboard with a loading surface (1) formed by a core (3) of spiral-shaped tubular reinforcements (4). The core (3) has an upper covering (2) and a lower one.
    [0016] Figure 2 shows a detail of a loading surface (1) in the absence of adhering the upper covering (2). The loading surface (1) has two corners (5) and a rectangular joint support (6) which is adhered to the reinforcements (4) that contact it and to the lower cover (2).
    [0017] In figure 3 reinforcements (4) are represented in various forms, both open and closed: spiral, circular, "P" or zigzag. Four are corrugated cardboard and one is plain cardboard.
    [0018] Detailed description of an embodiment
    [0019] Next, the loading surface (1) and the legs of the pallet are described.
    [0020] The legs of the pallet are made of cardboard, they are adhered to the loading surface (1) and can be rectangular, square, circular or of any known type.
    [0021] The loading surface (1) of the pallet can be square or rectangular and is formed by a core (3) having on its lower and upper side adhered sheets of paper or cardboard sheets as a covering (2) that serve to provide the load surface (1) with flexural strength and a correct visual finish.
    [0022] Preferably, the reinforcements (4) that make up the core (3) are oriented and positioned in a random sense and contacting each other to facilitate the manufacturing process and to avoid the formation of ordered patterns that generate possible weak lines with a lower resistance to bending . These lines will occur when a fictitious plane perpendicular to the load surface (1), located inside it, is tangent to a large number of reinforcements (4).
    [0023] Taking into account that the flexural strength of the load surface (1) will depend on its thickness, the tubular-type three-dimensional shape of the reinforcements (4) is a great advantage in allowing the manufacture of very thick load surfaces without a significant increase in weight.
    [0024] The reinforcements (4) will be manufactured by bending or folding flat rectangular cuts and may have various forms, both closed and open, and there may be a large number of possibilities in both cases.
    [0025] In the first case, the reinforcements will be manufactured by bending or folding the cuttings and adding adhesive to an edge perpendicular to the bases. Reinforcements may have a circular section, "P", square, triangular or hexagonal, among others.
    [0026] In the second case. The reinforcements will be manufactured by bending or folding the cut-outs and they will be able to have a section with a spiral, zigzag, etc. shape.
    [0027] The shape of the reinforcements (4) or the way of combining reinforcements (4) of different shapes must be taken into account in order to maximize the surface of the reinforcement bases (4) in contact with the coverings (2), as well as to avoid the formation of patterns with possible weak lines by which the load surface (1) can flexional whenever possible. This is why it will always be preferable to use a reinforcement with a spiral section in front of a circular one, since there will be greater contact with the reinforcement (2) and also the free part of the end of the spiral will tend to cover holes and cut possible weak lines.
    [0028]
    [0029] First, a preferred possibility is described in which the reinforcements are made of corrugated cardboard. This possibility has the economic advantage of being able to use a mixture of discarded cardboard as a raw material, as well as the high compressive strength of corrugated cardboard for the usual thicknesses of the surface of a pallet.
    [0030]
    [0031] Because the resistance of the loading surface (1) depends on the resistance provided by the adhesive to the joints between the reinforcements (4) and the coatings (2), the use of corrugated cardboard is a great advantage over the use of single board as the contact surface between the reinforcement bases (4) and the coatings (2) increases and therefore the amount of adhesive allowed.
    [0032]
    [0033] To increase the compressive strength of the load surface (1), the corrugation of the reinforcement board (4) will be oriented perpendicular to its base.
    [0034]
    [0035] In this type of reinforcements, the corrugated cardboard that forms them has been able to undergo a reduction of thickness in the bending process, being equally valid.
    [0036]
    [0037] A second possibility of realization consists of a pallet whose reinforcements (4) are of smooth cardboard or which has a mixture of reinforcements (4) of smooth cardboard and corrugated cardboard, although the resistance of the loading surface (1) would be lower to that of an equivalent loading surface (1) with all the reinforcements (4) of corrugated cardboard due to the lower admissible amount of adhesive and the lower compressive strength of the single cardboard versus the corrugated cardboard. This possibility has the advantage of allowing the manufacture of lighter pallets.
    [0038] In all cases the pallet can be manufactured from new cardboard, both smooth and corrugated, which will allow the pallets are free of all dirt and can be used in industries with high hygiene requirements, such as food industries.
    [0039]
    [0040] In all cases, the loading surface (1) can have additional coatings (2), consisting of sheets of paper or smooth or corrugated cardboard adhered externally to the coatings (2) over its entire surface, which will increase the resistance to bending and improve the visual finish.
    [0041]
    [0042] In all cases, the covering sheets (2) can also cover the side faces of the core (3) to provide a greater resistance to bending and a better visual finish.
    [0043] In all cases the pallet can have corners (5) adhered to the side faces of the loading surface (1). The corners (5) may have a rectangular shape, "L", or "U" and serve to provide a better visual finish and to increase the flexural strength of the loading surface.
    [0044]
    [0045] In all cases, the pallet can have one or several joint supports (6) located inside the loading surface parallel to one of its sides along its entire length. The joint supports (6) are made of cardboard, have the same height as the core, can be rectangular, "U" or square section tube, and are simultaneously attached by adhesive to the two coatings (2) and the reinforcements (4) that They contact tangentially with them. The attachment supports (6) have the purpose of increasing the number of joints in the areas that suffer a greater compressive or flexion stress of the load surface (1), such as the middle zone and those furthest away from the legs.
    [0046]
    [0047] In all cases the core (3) can have an intermediate sheet (7) of the size of the load surface (1) that is positioned at half the thickness of the core and that contributes to the improvement of the strength. In this case, the core (3) will have two layers of reinforcements (4).
    [0048] In all cases the reinforcements (4) may be of the same shapes, sizes and qualities or in any combination of them.
    [0049]
    [0050] In all cases reinforcements (4) can have cuts in their edges perpendicular to their base to facilitate folding by reducing internal stresses that are generated in the edges of the fold.
    [0051]
    [0052] In all cases, the core (3) can have a solid reinforcement (8) with a section similar to any reinforcement of tubular type in order to increase the strength of the connection between the core and the cuts. This solid reinforcement can be manufactured by gluing several cutouts of corrugated cardboard or by winding a rectangular strip of cardboard and gluing it throughout its development.
    权利要求:
    Claims (18)
    [1]
    1. Lightweight pallet of reused cardboard characterized in that it comprises cardboard legs adhered to a loading surface (1) composed of an upper (2) and lower covering made of cardboard or high-strength paper and an intermediate composite core (3) by reinforcements (4) independent of each other, of discarded corrugated cardboard of various types and qualities, of rectangular development of height equal to the thickness of the core (3). which are folded or bent to form three-dimensional tubular-type geometric figures with two parallel open bases, and which are stable against overturning when pushed. The reinforcements (4) are positioned randomly by contacting each other, adhesively joined by the edges of both bases to the upper and lower coatings (2).
    [2]
    2. Lightweight cardboard pallet re-used according to the previous claim, characterized in that the reinforcements (4) form a pattern such that every fictitious plane perpendicular to the loading surface (1) located in its interior intersects several reinforcements (4).
    [3]
    3. Light cardboard pallet re-used according to previous claims, characterized in that the corrugation of the cardboard of the reinforcements (4) is oriented mainly perpendicular to its base.
    [4]
    4. Lightweight cardboard pallet reused according to previous claims, characterized in that the reinforcements (4) have a closed section and have an adhesive on an edge perpendicular to its base.
    [5]
    5. Lightweight cardboard pallet reused according to the previous claim, characterized in that the reinforcements (4) have a circular shaped section, or a curved "P" section.
    [6]
    6. Light cardboard pallet reused according to claims 1 to 3 characterized in that the reinforcements (4) have open section.
    [7]
    7. Lightweight cardboard pallet reused according to the previous claim, characterized in that the reinforcements (4) have a spiral or "C" or zigzag-shaped section.
    [8]
    8. Lightweight cardboard pallet re-used according to the previous claims, characterized in that it has reinforcements (4) made of smooth cardboard interspersed with reinforcements (4) made of corrugated cardboard, whereby the reinforcements (4) made of plain cardboard with similar geometric characteristics to those of any type Reinforcement of corrugated cardboard.
    [9]
    9. Lightweight cardboard pallet reused according to previous claims, characterized in that it is composed of a combination of reinforcements (4) of different shapes or sizes.
    [10]
    Lightweight cardboard pallet re-used according to the previous claims, characterized in that the loading surface (1) has rectangular corners (5) of "L" or "U" along the perimeter of the core (3).
    [11]
    11. Lightweight cardboard pallet re-used according to the previous claims, characterized in that the loading surface (1) has one or more joint supports (6) with a flat rectangular shape or form e 4% U "or a square section tube shape, parallel to each other. one side of the loading surface along its entire length. The supports are made of cardboard and are adhesively bonded to the upper and lower coatings (2) and to the reinforcements (4) that tangentially contact them.
    [12]
    12. Lightweight cardboard pallet reused according to the previous claim, characterized in that the upper and lower coverings (2) are made of corrugated cardboard.
    [13]
    13. Light cardboard pallet reused according to previous claims, characterized in that the corrugations of the cardboard of the reinforcements (4) have been compressed in the process of folding and bending.
    [14]
    14. Light pallet of reused cardboard according to the previous claims, characterized by additional coatings (2) consisting of sheets of paper or smooth or corrugated cardboard externally adhered to the coatings (2) over their entire surface.
    [15]
    15. Lightweight cardboard pallet re-used according to the previous claims, characterized in that the covering sheets (2) cover the lateral faces of the core (3).
    [16]
    16. Light cardboard pallet reused according to previous claims, characterized in that it has solid reinforcements (8) of height and section equivalent to the height and section of the reinforcements (4).
    [17]
    17. Light cardboard pallet re-used according to the previous claims, characterized in that the reinforcements (4) are deformed and compacted so as to be more grouped once they are joined to the coverings (2).
    [18]
    18. Lightweight cardboard pallet re-used according to the previous claims, characterized in that it has an intermediate sheet (7) of the size of the loading surface (1) that is positioned at half the thickness of the core.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH558741A|1974-02-21|1975-02-14|Vecere Philip J|Disposable pallet made from cardboard layers - has flat load-carrying plate supported on four footrests|
    GB2127773A|1982-10-07|1984-04-18|Redditch Packaging Products Li|Pallets|
    US4931340A|1985-12-28|1990-06-05|Sumitomo Light Metal Industries, Ltd.|Honeycomb panel structure|
    EP0518628A1|1991-06-14|1992-12-16|Henry L Liebel|Composite article made from used or surplus corrugated boxes|
    US5543205A|1991-06-14|1996-08-06|Corrcycle, Inc.|Composite article made from used or surplus corrugated boxes or sheets|
    US5702560A|1993-03-15|1997-12-30|Skinner; Larkin P.|Apparatus for the manufacture of a laminated web from recycled corrugated cardboard|
    US20030000432A1|2001-01-19|2003-01-02|Joaquin Crevillen Pastor|Cardboard pallet|
    US20100043678A1|2008-03-28|2010-02-25|Oria Collapsibles, Llc|Structural supporting substrate incorporated into a composite and load supporting platform|
    WO2013058703A1|2011-10-18|2013-04-25|Lpi Light Panel Innovation Ab|Method of manufacturing a sandwich material board|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201700720A|ES2705341B2|2017-09-22|2017-09-22|Lightweight reused cardboard pallet|ES201700720A| ES2705341B2|2017-09-22|2017-09-22|Lightweight reused cardboard pallet|
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