IL39736A - A method for manufacturing a plastics material pallet for storing different products and materials,a device for carrying out said method and a pallet made according to said method and with said device - Google Patents

Description

A METHOD FOR MANUFACTURING A PLASTICS MATERIAL PALLET POR STORING PRODUCTS AND MATERIALS A DEVICE FOR CARRYING OUT SAID METHOD AND A PALLET MADE ACCORDING TO SAID METHOD AND WITH SAID DEVICE This invention relates to a method for the ture of a pallet or platform integrally formed of an expanded plastics as reinforced slats embedded there for storing different products these pla forms are more called the invention relates to a device for ting said method into practice and to the product thus obtaine As it is well known to those skilled in the the pallets for storing different products or materials are ly hfflade of wood and generally comprise a flat of slats which rest on which are so arranged as to be able to be grasp by a fork on two opposite sides thereof called pal or on all the four sides called These wooden pallets are of the disposable type and have main defect that they are comparatively heavy and lend poorly to storing certain products on account of the presence of nails and their to absorb In order to overcome these it has been suggested to adopt disposable pallets as formed as an gral piece of a plastics Such disposable pallets as integrally formed by a plastics material have proved to have a resistance to the load which does not always measure up to the According to the it has been envisaged to reinforce the pallets with wooden slats as embedded i the plastics Thin fact has originated the technical problem of how support said wooden slats within the while venting that the supporting members thereof may subtract room to the expanded plastics material which is ed completely to vrap the slats in order to obtain perfect cohesion This problem is according to the by driving plurality wooden flexible elate of a profile eneuring firm bond to the foamed plastic material onto a plurality of pins which extend vertically the walls of a the latter reproducing the desired shape for the then feeding the mould with and ripened plastics material while simultaneously feeding in then cooling and allowing the piece to In order that a high resistance may be the wooden slats are positioned parallel to eaoh other and perpendicularly to the resting feet of the the slats have a sawtooth outline so as to exalt their adhesion with the expanded plasties material they are obtained from a tively flexible such as so as to match the bending motion of the expanded plastics material under the thus preventing internal failures French Patent teaches the of reinforcing inserts embedded into a plastic pallet however as stated in said patent these inserts are preferably made of The German Utility Model describes a pallet structure made of foamed into which wooden billets or strips can be Heither of these prior art teach or suggest providing in a pallet struoture of foamed plastic wooden reinforcing members intrinsically having lexibility whereby these reinforcing members are able to follow the possible bending of the plastic structure when and if it is subjected to loads causing the struoture to assume a curved The foregoing and other features and advantages of the invention will become more clearly apparent from a scrutiny of the ensuing exemplary disclosure which is given with to the accompanying the latter showing a mould constructed according to the subject and made accordin thereto and another pallet made aooordlng to the In the 1 is a view showing the 2 is a plan view of the mould shown in Figure Figure 3 a top perspective view showing the pallet as obtained from the mould of Figure 4 is a perspective view of the pallet of Figure shown turned upside Figure 5 is a oloseup view showing a perspective view of one of the reinforcing slats of the Figure 6 is a cross sectional view taken along the line of Figure 7 and showing another pallet according to the and 2a plan view taken along the arrow A of Figure With particular re erence to Figures 1 and 2 of the the numeral 10 generally indicates the in which is structurally composed by a bedplate 11 a die 12 and a counterdie 13 The bedplate the die 12 and the counterdie 13 so connected to one another as to be easily removable there extend from the bedplate vertically and perpendicularly a plurality of slender pointed pins 14 spaced apart from each other along two eon rontingly arranged rallel rows As clearly shown in Figure said pins 14 a shank IS and a nut being fixed to the bedplate and extend with their points into the interior of the die and counterdie as they pass through holes formed in the die Said pointed ends are intended to receive wooden slats 18 driven thereon 2 and having a sawtooth profile so as to increase their adhesion to the expanded plastics the slat being preferably of In the so constructed after that the have been driven onto the pointed ends of the pins the interior of the die and counterdie assembly of reproduces the shape of the pallet one desires to is conventionally fed with a ripened and tic material preferably expanded and multaneously with the moulded article is then cooled and allowed to Figures 3 4 illustrate the hus it is generally indicated at 20 is composed by a planar resting surface 21 for and from the bottom face of the pallet three supporting feet 2 and 24 parallel to each The foot 22 extends alon the centre line of the while the feet 23 and 24 are extended along two opposite sides of the feet have lightening hollows 25 4 It be noted that the wooden slate 18 are parallel to each other and are pendicular to the resting feet so as considerably to strength en the Of the mould could also have a shape which is adapted to originate pallets or pallets of any different shape without changing from a ceptual Figures 6 and 7 show another pallet made according to the Said pallet is adapted to receive containers and is generally indicated at 100 and is also made as a single piece of expanded The pallet 100 has an octagonal flat from whose bottom surface there extend three resting feet 140 and parallel to each The foot 130 is extended along the centre line of whereas the feet 140 and 150 are extended along two opposite sides of the The feet and are tapered towards bottom and have lightening I hollows The foot 3 in addition has a central hole which passes Wherethrough and through the flat 1 for charging the The hole of course is ed to be stoppered by a not the top face of the flat 1 10 a peripheral grooved as shown at the groove being Intended to receive in a freely removable manner a container as diagrammatically shown at A pallet so constructed is but not intended to receive octagonal paperboard containers as compared with the are more robust since double number off cording to the in the flat 110 there are embedded wooden slats 220 which are parallel to each other and are pendicular to the resting feet 140 and 150 so as to force the pallet These wooden slats are shaped in the same way as described for the embodiment described The advantages of the invention can be summarized as The adhesion of the pointed pins 14 brilliantly solves the of supporting the wooden slats in the moul without subtracting space to the expanded but to a minimum a reduction up to as compared with that of a wooden pallets of the same size absolute absence of which could detriment for storing certain products or a perfectly continuous and smooth surface for the flat pallets are constructed with a wooden frame which c eates detrimental empty obnoxious for certain since the pallets are perfectly insulated they ca be put also on moist or swampy grounds without any danger for the for example when storing perishable product or materials such as starch and a pallet made according to the the size being is considerably lightweight than a wooden pallet and can thus be handled conveniently and be shipped with a reduced toil and it is virtually as a matter of fact the use of fork truck produces in the pallet a more or less hole without however prejudicing the use of whereas a shock a fork truck and a wooden pallet may rupture slats in it and prejudice the it is perfectly acceptable from a hygienic absence of nails which could cause damages storing certain products and insufficientOCRQuality

Claims (11)

What we claim let

1. · A method for afinufaoturing a plaetlce material pallet for storing different produota and naterlale oharaotexieed in that it comprises the etepe of driving a plurality of wooden flexible elate of a profile ensuring firm bond to the foamed plaotio material onto a plurality of pine which vertically extend from a vail of a aould reproduoing the desired pallet ehape* introducing into aald nsould a pre-expanded plastics material and elaultaneouely ateeim, cooling and allowing to ripen the Moulded article*

2. A method according to olaim 1, oharaoterlBed in tha ealcl plastics material ie expanded polyotyrene.

3.Δ device for carrying out the method ao claimed in claim 1 » characterised in that it comprises a mould reproduoing the desired pallet ehape and a plurality of pine extending from a wall of aald mould.

4. · A pallet made according to the method and with the device ae claimed in claims from 1 to 3» characterised in that it la formed aa a single piece of expanded polyatyrene and has resting feet extending from the bottom face thereof· wooden elate parallel to eaoh other and perpendicular to the reating feet being embedded in aald expanded polyatyrene article.

5. A pallet according to olaim 4» characterised in that from its bottom faoe there extends a peripheral grooved edge Intended to receive a container.

6. A pallet according to olaim 5. characterised in that a central through-hole la provided for discharging the material aa contained in the container.

7. A pallet according to olaim 5. characterised in that ώ¾ahape la ootagonal. -

8. · A pallet according to claim 4* characterized in that said resting feet are three, parallel to each otherf one centrally located and extending along the centre line of the pallet and two laterally located and extending along two opposite sides of said pallet.

9. * A pallet according to claims 6 and 8, characterized in that said discharge hole passes through the central flat and foot.

10. A pallet according to claim 4» characterized in that said feet have lightening hollow spaces therein.

11. A pallet according to the preceding claims, substantially as illustrated and