JPH0318356Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a novel sheet pallet. More specifically, the soft sheet pallet is characterized in that a brush-like material is planted on the entire surface or loading surface of a thermoplastic resin sheet pallet that has tabs along the edge of the cargo loading area. The present invention relates to a sheet pallet that prevents bag breakage, peeling of surface printing, collapse of cargo, etc. during sheet saving (unloading), and enables stable cargo handling operations. BACKGROUND OF THE INVENTION Along with resource conservation in recent years, distribution systems that use lightweight sheet pallets instead of conventional wooden pallets, plastic pallets, etc. are rapidly becoming popular in the field of cargo distribution. Sheet pallets (a) save space for storage, (b) are inexpensive, (c) can eliminate collection in some cases, (d) are easy to manufacture, and (e) It has many advantages, including the ability to improve work efficiency. Various types of sheet pallets have been proposed, which are manufactured using materials such as paper and plastic, and have unique structures and shapes. For example, the "loading platform" disclosed in Japanese Utility Model Publication No. 55-16821 uses a polyolefin thermoplastic resin that is
A rough surface is formed on at least the top surface of the 0.5 to 3.2 mm sheet pallet, and by forming the top surface to be rougher than the bottom surface, the coefficient of static friction between the top surface and the cargo is reduced, and the coefficient of static friction between the bottom surface and the platen is reduced. It is characterized by a coefficient of friction higher than the sliding friction coefficient between the two, making cargo handling operations smoother. Furthermore, the "slip pallet" disclosed in Japanese Patent Publication No. 58-1023 is a foamed sheet containing polyolefin resin as a main component and having an apparent specific gravity of 0.4 to 0.7, with ruled lines carved into it, and tabs provided at one or more places on the periphery. A sheet pallet has been proposed which is characterized by the following characteristics and is intended to prevent breakage of the ruled line portion and improve impact resistance. These conventional sheet pallets have had some success in transporting cargo. However, with the diversification of cargo and cargo handling methods, problems have arisen that cannot be solved by sheet pallets as described above. In other words, in cargo handling operations using sheet pallets, a method (sheet save method) is used in which sheet pallets are removed from unitized cargo using a push-pull forklift when cargo is loaded in bulk onto trucks, freight cars, containers, etc. This method has the advantage of mechanizing the loading of cargo and freeing people from the conventional heavy burden of manual shoulder loading. On the other hand, problems arise such as the cargo rubbing against the sheet pallet, causing minute scratches and holes in the cargo, and the printing on the surface of the cargo rubbing and peeling off. Such problems are especially common in bags for containing granular materials such as fertilizers, artificial soil, rice, wheat and other grains, i.e. polyethylene, polypropylene,
This problem occurs significantly in so-called heavy packaging bags with a thickness of 100 μm to 300 μm and having smooth surfaces made of polyolefin resins such as ethylene-vinyl acetate copolymer, polyamide resins, and thermoplastic resins such as polyester resins. Conventionally, these heavy-duty packaging bags have pinholes at the top and/or bottom of the bag for degassing to facilitate filling, but for products that do not like moisture, such as fertilizer bags, Due to the decrease in value, improvements in filling methods such as vibration packaging and vacuum packaging have recently led to most of the heavy packaging bags being replaced by pinhole-free bags, so-called pin-less bags. These pinless bags are causing more problems such as damage to the bag and peeling of the print. This is because the air buffer layer between the granular contents and the bag disappears, and the fluidity of the granular materials deteriorates, making the entire bag hard, causing the surface of the bag to come into localized strong pressure contact with other objects. This is thought to be due to friction. The purpose of the present invention is to provide a sheet pallet that does not cause problems such as damage to the bags or peeling off of printing as described above even in such cases, and enables smooth cargo handling operations. . That is, in the present invention, a brush-like material is planted on the entire surface or loading surface of a sheet pallet made of thermoplastic resin with tabs provided along the edge of the cargo loading area, or a brush-like material is planted on the loading surface. A soft sheet pallet made by pasting sheets is provided. In the present invention, thermoplastic resin sheet pallets include homopolymers such as polyethylene, polypropylene, polybutene-1, poly-4-methylpentene-1, ethylene-propylene copolymer, ethylene-butene-1 copolymer, ethylene - Polyolefin resins such as hexene-1 copolymer, polyamide resins such as nylon-6, nylon-6,6, nylon-11, and nylon-12, polyester resins such as polyethylene terephthalate, polyvinyl alcohol resins, Refers to sheet pallets manufactured from homopolymers, copolymers, or mixtures thereof such as vinyl chloride resins. Among these, polyolefin resins such as polyethylene and polypropylene are inexpensive and have rigidity, so products made from these resins are preferable in terms of cost and strength. In addition, the thickness of the sheet pallet depends on its strength, price,
Although it is determined depending on the purpose and application such as the form of use, a thickness of about 0.3 to 10 mm, preferably about 0.5 to 5.0 mm is used. The sheet on which the brush-like material of the present invention is implanted is a sheet in which threads, strings, ropes, tapes, pile threads, etc. having some degree of flexibility are implanted almost vertically on an appropriate sheet. The planting interval, ie, the density, may be constant or variable. Examples of sheets with such brush-like materials include polyolefin resins, polyamide resins, polyacrylic resins, polyester resins,
Carpet-like pile yarns made of synthetic fibers such as rayon and vinylon or natural fibers such as wool and cotton, artificial grass, shoe-wiping mats made of bristles, sealskin, or similar synthetic materials. There are things. In addition, special public relations
As described in Publication No. 44721, extrusion is performed using polyolefin resins such as polyethylene and polypropylene, vinyl chloride resins such as polyvinyl chloride, polyamide resins such as nylon-6, and thermoplastic resins such as polycarbonate. The term also includes artificial lawns manufactured by molding, injection molding, etc., in which foliage is integrally formed on a base portion at regular intervals. The present invention will be explained in more detail below based on the drawings. FIG. 1 is a perspective view of a conventional thermoplastic resin sheet pallet, and the sheet pallet 1 has a tab 3 and a loading surface 4. As shown in FIG. FIG. 2 is a partially enlarged sectional view of a soft sheet pallet using artificial grass according to an embodiment of the present invention, and the soft sheet pallet 2 is a sheet pallet made of thermoplastic resin that covers the entire surface or loading surface of the sheet pallet 1. An artificial lawn 6 is adhered to the lawn via an adhesive layer 5 as necessary. A large number of brush-like objects 7 are planted on the surface of the artificial lawn 6. When attaching a sheet with brush-like material such as the artificial lawn described above to a thermoplastic resin sheet pallet, use a spray method using a normal commercially available adhesive such as an acrylic emulsion adhesive or a polyurethane adhesive. Alternatively, there are various methods such as lamination using general methods such as brush painting, lamination using double-sided adhesive tape, hot melt adhesive, etc., or lamination and integration of molten resin during sheet pallet production. The method described above can be adopted, and is not particularly limited. Also, as long as it does not deviate from the gist of this invention,
Antioxidants, antistatic agents, pigments, ultraviolet inhibitors,
Ordinary additives such as inorganic or organic fillers and lubricants may be appropriately selected and added. Figures 3a and 3b are schematic side views illustrating a sheet saving method performed using the reinforced soft sheet pallet of the present invention. As shown in FIG. 3a, a unit load 13 is placed on a wooden pallet 11 via a sheet pallet 12, and a first gripper 15 of a face plate 14 of a push-pull forklift (not shown) is mounted on a wooden pallet 11 via a sheet pallet 12. So, tab 16 of sheet palette 12
, and pull the face plate 14 toward the attachment 17 (pull motion). In this way, the unit load 13 is placed on the platen 18.
After placing the tab 16 from the first gripper 15
release. Thereafter, the unit load 13 is transported to a predetermined location. Thereafter, as shown in FIG. 3b, with the second gripper 19 provided on the support of the attachment 17,
Grasp the tab 16 of the sheet pallet 12, gradually push out the face plate 14 (pushing operation), and transfer only the unit load 13 onto another wooden pallet 11' while leaving the sheet pallet 12 on the platen 18. (Sheet save)
This is what we do. When this sheet saving is performed, the sheet pallet and the cargo rub against each other, causing scratches and small holes on the bag as described above, and the printing peeling off. However, since the soft sheet pallet of the present invention has a buffer layer made of brush-like material, there is no localized excessive friction with the cargo, and the above-mentioned problems are solved, and there is no possibility of damaging the cargo. There isn't. Incidentally, a test was conducted in which the operations shown in FIGS. 3a and 3b were repeated many times, but no damage occurred. This will be further explained below using examples. Example 1 A sheet pallet made of polypropylene resin (product name: Nisseki Co., Ltd.) was used as a sheet pallet made of thermoplastic resin.
Spray acrylic emulsion adhesive (product name: AD, manufactured by Nippon Koki Co., Ltd.) onto a BQP sheet pallet (manufactured by Nippon Petrochemicals Co., Ltd., thickness 1 mm), and apply artificial turf (product name: Polyturf No. 1700, Sekisui Chemical Co., Ltd.
(approximately 10 mm in pile length) to create a soft sheet pallet. This was subjected to the test described later, and the surface condition of the loaded fertilizer bag and the condition of the printed surface were evaluated. The results are shown in Table 1. Comparative example 1 Thermoplastic resin sheet pallet (product name: Nisseki)
The same test as in Example 1 was conducted using a BQP sheet pallet (manufactured by Nippon Petrochemical Co., Ltd., thickness 1 mm). The results are also shown in Table 1. [Test Conditions] The following tests were conducted on the above soft sheet pallet. On top of the sheet pallet, 0.2 mm thick polyethylene bags filled with 20 kg of fertilizer were stacked in 10 layers of 2 rows horizontally and 5 rows vertically. The carrying load is 2 tons per sheet. For this cargo, 40 cycles were repeated, each cycle consisting of the sheet extraction operation shown in FIGS. 3a and 3b. At that time, the surface condition of the bottom fertilizer bag that came into contact with the sheet pallet was observed. The results are shown in Table 1.

【table】

【table】 [Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional sheet pallet made of thermoplastic resin, Fig. 2 is a partially enlarged vertical sectional view of a soft sheet pallet using artificial grass according to an embodiment of the present invention, and Figs. 3 a and b 1 is a schematic side view showing an example of a sheet saving method using a sheet pallet. 1...Thermoplastic resin sheet pallet, 2,1
2... Soft sheet palette, 3... Tab, 4...
... Loading surface, 5 ... Adhesive layer, 6 ... Artificial grass, 7
...brush-like object, 11,11'...wooden pallet,
13...Unit load, 14...Face plate, 15...First gripper, 16...Tab,
17... Attachment, 18... Platen, 1
9...Second gripper.

Claims (1)

[Scope of Utility Model Registration Request] (1) A brush-like sheet pallet made of thermoplastic resin of a single structure with a thickness of 0.3 to 10 mm with a tab along the edge of the luggage loading area or on the loading surface. A soft sheet pallet for heavy packaging bags, which is characterized by having objects planted on it. (2) The soft sheet pallet according to claim 1, wherein the thermoplastic resin sheet pallet is made of polyolefin resin. (3) The soft sheet pallet according to claim 1 or 2, wherein the brush-like material is a pile yarn or fibrous material made of a thermoplastic resin. (4) The thermoplastic resin is a polypropylene resin, a polyamide resin, a polyacrylic resin,
The soft sheet pallet according to claim 3, which is made of at least one resin selected from the group consisting of polyester resins.