ES2672944A1 - Pallet of reused plates (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

The object of the invention is a reused cardboard pallet having the legs adhered to a loading surface (1). The loading surface (1) is composed of an upper covering (5) and a lower one of cardboard or high-strength paper. The core of the loading surface (1) is formed by sheets (2) of reused corrugated cardboard of various types and qualities that are cut to the size of the loading surface (1). The legs (4) have a cube shape and are formed by a plurality of square or rectangular sheets of discarded corrugated cardboard of various types and qualities, adhered with the corrugation perpendicular to its base. The core or the legs (4) preserve the defects of the cardboard used as raw material, such as crushing, cuts (3) of flaps, die-cut cuts or folding lines of edges of boxes. (Machine-translation by Google Translate, not legally binding)

Description

Pallet of reused plates.

Sector of the technique in which the invention is framed

The present invention relates to a low cost pallet manufactured mostly from discarded corrugated cardboard.

State of the art

Currently, several patents and models of utility pallets are known that are more expensive because they are not manufactured with reused material.

In document PCT / US2004 / 040373 a pallet is proposed! of a single use that presents the inconvenience of being complicated to manufacture and assemble and of needing complete sheets of corrugated cardboard manufactured for this purpose.

In PCT / ES200 1000447 a pallet is described in which the legs need 2 additional fixing plates to the loading surface and the gluing of 2 complete layers of first use corrugated cardboard.

Explanation of the invention.

The pallet object of the invention uses corrugated cardboard sheets (2) mainly from the cutting of boxes or other used and discarded packaging as the main raw material.

The pallet has a loading surface (1) that is composed of a core, shaped by several superimposed rectangular plates (2) joined by adhesive, and by an upper and lower covering (5) consisting of a sheet of high-strength paper or in a flat or corrugated cardboard plate adhered to the outer faces thereof. The plates (2) that form the core are flat and are cut to the size and shape of the loading surface (1), each plate (2) being of a different corrugated cardboard coming mostly from used cardboard boxes, in such a way that cartons of different qualities remain alternated. thicknesses and resistances.

The pallet has legs (4) formed from the neck of a solid rectangular block of cardboard consisting of a plurality of plates (2) of various qualities. thicknesses and resistances adhered in such a way that all or most of the cardboard waves have the same orientation. The block has a thickness equal to one of the sides of the base of a leg (4) And once cut in the form of rectangles it forms the legs (4), which have a cube shape and the cardboard waves in the direction

perpendicular to the base of the legs (4).

The plates (2) coming from boxes can have weak areas such as folding lines of

box edges or cuts (3) of die-cut flaps or recolles that have remained in an internal position to the cutting of the plate (2), which is not problematic since the resistance of the loading surface (1) or the legs (4) is the one provided by a set in which these zones

5 weak are alternated in random positions. plates (2) can also be alternated with the corrugated cardboard in perpendicular directions or in other mismatched directions.

The main advantage of this pallet is the possibility of being able to take advantage of discarded commercial boxes for its manufacture, both medium and large size, since if they are fully extended and the flaps are used, most of the boxes will be of sufficient size for cut plates

10 (2) 80x60 cm, enough for a commercial size pallet.

Other advantages of this pallet compared to other pallets of c3ltón or wood are a greater lightness provided by the use of cardboard cOn "ugado. A lower manufacturing cost by using as waste raw material instead of cardboard pannels manufactured ex process and a lower environmental impact by avoiding a complete factory recycling cycle to

15 produce plates (2) of cardboard. The pallet can be manufactured very simply by gluing plates (2) to form the core or to form a solid block to paltir from which the legs (4) will be formed.

Brief description of the drawings.

20 Figure I shows the development of a cardboard box and an iron (2) cut to the size of the loading surface (1) of a pallet from the box. The plate (2) retains part of the cuts (3) of the flaps of the box and the folding edges of the box.

Figure 2 shows the bonding of the coverings (5) and of several plates (2) that have the folding edges of the boxes and the cOltes (3) in random positions. to form a loading surface (1) to which the pallet legs are attached.

Figure 3 shows the gluing of a multitude of plates (2) formed from the cut of boxes. The plates (2) have cuts (3) of flaps and fold edges of the boxes from which they come and form a block that is cut to make the legs (4) of the pallet.

Detailed description of an embodiment The load surface (1) and the legs (4) of the pallet are described below, as well as the way of joining the legs (4) to the load surface (1). The core of the loading surface (1), the legs (4), or both parts can be made of corrugated cardboard from boxes or other types of used cardboard packaging. 35

The legs (4) of the pallet are preferably manufactured from a rectangular block formed by superimposed sheets (2) of the same size, positioned with the direction of the parallel wavy, and adhered to each other. The thickness of the block will coincide with the length of one of the sides of the base of

the leg (4) that we want to obtain so that once formed it can be cut by means of band saws

or similar to form legs (4) with a hexagonal cube shape of the desired size. The block may have paper or cardboard sheets attached to its lower and upper face.

coating mode (5) to provide the legs with a correct visual finish, covering 5

possible defects or labeling of the cafton of the boxes.

The block may be formed by plates (2) without defects or by plates (2) with defects such as folds or cuts (3) of flaps. The presence of said defects will not have a significant impact on the resistance of the legs (4) because the defect will be adhered between two healthy layers of a plurality of adhered layers.

10 The legs (4) will have the direction of the corrugated cardboard perpendicular to its base for greater compressive strength. The loading surface (1) of the pallet can be square or rectangular and has a core composed of plates (2) cut to size. For the manufacture of the loading surface (1), cardboard boxes whose

15 development is greater than the size of the loading surface (1) of the pallet to be manufactured, which will have the direction of the corrugated cardboard oriented in a direction parallel to one of its sides once cut.

The loading surface (1) may alternate plates (2) adhered with the corrugated in perpendicular directions to obtain a resistant loading surface (1) in its longitudinal and transverse direction.

Next, a possibility of realization is described in which the external plates (2) of the loading surface (1) are obtained from boxes or packages whose main faces have dimensions smaller than the dimensions of the loading surface (1). In this case, the plates (2)

25 cuts have defects such as die cuts or cuts (3) of flaps or fold lines of the edges of the boxes from which they come. In this possibility, the loading surface (1) has new sheets of paper or caffon attached to its lower and upper face as a cover (5) that serve to provide the loading surface (1) with a correct finish visual, preventing defects such as cuts (3), folds or signs and texts from being visible

30 printed boxes. A second possibility of realization with you in a palie! which has the plates (2) of the upper and lower face of the loading surface (1) without defects being manufactured from larger boxes. In this case, taking care that the faces that are visible do not have any labeling of the original boxes, paper or cardboard sheets may be dispensed with.

35 coating (5) manufactured ex process.

In all cases, a core stapling process can be incorporated with the coatings

(5)

that improves the bonding process by exerting pressure during the drying of the adhesive, being able to

arrange each loading surface (1) of several clips. In all cases the pallet may have legs (4) that do not come from a block of plates

(2)

chopped up. For this, it will be sufficient to glue a square or rectangular cut-out plurality whose sides coincide with the height of the leg (4) and the length of one of the edges of the base, until the necessary thickness is reached.

In all cases, the pallet may have an additional coating (5) consisting of a sheet of plain or corrugated paper or cardboard adhered externally to the core coating (5) that will provide additional resistance to bending and a better visual finish.

In all cases the pallet can have a coating (5) also wrap the side faces of the core.

In all cases the lower covering (5) of the loading surface (1) may have perforations whose section is coincident with the base of the legs (4) that will facilitate the positioning of the legs (4) during gluing.

In all cases, the legs (4) may be covered by a layer of paper or cardboard covering all their faces, except for the face that contacts the loading surface (1), in order to improve the visual finish.

In all cases the loading surface (1) or the legs (4) of the pallet may be manufactured using corrugated cardboard with crushing, from the rejection of corrugated cardboard manufacturing industries or other use or activity.

Claims (8)

1.-Pallet of reused plates characterized in that it comprises cardboard legs (4) adhered to a loading surface (1) that is composed of a core and a coating (5) of its upper and lower faces consisting of a sheet of paper or cardboard attached to it. The core is formed by flat plates (2) of discarded corrugated cardboard, which are of different types and qualities and are cut to the size of the loading surface (1). And that they are superimposed and joined by adhesive. The legs (4) have a cube shape and are formed by a plurality of square or rectangular sheets of discarded corrugated cardboard of different types and qualities, adhered with the corrugated perpendicular to its base. The core or legs (4) have defects located in a random position from the discarded cardboard, such as crushing, flap cuts (3), die cuttings or folding lines of box edges. 2.-Pallet of reused plates according to claim I characterized in that the legs (4) are square or rectangular cuts of a solid block, of thickness equal to one of the sides of the base of a leg (4), formed by plate (2) ) adhered cardboard of various types and qualities. 3.-Pallet of reused plates according to claim 2 characterized in that the block has a paper or cardboard embellishing sheet on each of the main faces. 4.-Pallet of reused plates according to previous claims characterized in that it has defects in the legs (4) And in the core. 5.-Pallet of reused plates according to previous claims characterized in that the loading surface (1) has at least two plates (2) with the corrugated in non-coincident directions. 6.-Pallet of reused plates according to previous claim characterized in that the loading surface (1) has at least one plate (2) with the corrugated parallel to the longitudinal axis and a plate (2) with the corrugated parallel to the transverse axis of the surface loading (1). 7.-Pallet of reused plates according to previous claims characterized in that the coating (5) is made of corrugated cardboard. 8.-Pallet of reused plates according to previous claims characterized in that it has several staples that join the core with the coatings (5). 9.-Pallet of reused plates according to previous claims characterized in that the coating (5) also envelops the lateral faces of the core. 10.-Pallet of reused plates according to previous claims characterized in that the legs (4) are covered by a paper or cardboard embellishing sheet in the bath and on their faces. 11.-Pallet of reused plates according to previous claims characterized in that the lower covering (5) of the loading surface (1) has perforations whose section is coincident with the base of the legs (4).