JPH031279Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a novel pallet.
More specifically, this invention does not allow paint to soak in,
The present invention relates to a pallet that is not easily scratched, is easy to clean, and can maintain a smooth and clean surface for a long period of time.

[Prior Art] Conventionally, palettes for oil painting are usually made of wood and are in the form of thin plates, and paints and solvents tend to seep into the wood grains of the palette and become contaminated. Furthermore, when mixing paints with a palette knife, the surface of the palette is easily scratched, and therefore a clean surface cannot be maintained for a long period of time.

[Problems to be Solved by the Invention] The present invention has been made in order to solve the problems in the prior art as described above. In other words, the purpose of this invention is to prevent paints and solvents from seeping into the palette and contaminating it, and to make it easy to clean.
To provide a pallet whose surface can always be used in a clean state. Still another object of the present invention is to provide a palette that is less likely to be scratched on its surface when mixing paints with a palette knife and that can withstand long-term use.

[Means for Solving the Problems] The pallet of the present invention consists of a substrate and a surface layer laminated on at least one side of the substrate via an adhesive layer, and the surface layer has a It is characterized in that it mainly contains ultra-high molecular weight polyethylene having a polyethylene of 8 or more.

The surface layer is preferably formed of ultra-high molecular weight polyethylene itself, but may also be made of a mixture of 60% or more ultra-high molecular weight polyethylene and other thermoplastic synthetic resin. Furthermore, it is also possible to laminate an easily adhesive layer between the layer containing ultra-high molecular weight polyethylene and the adhesive layer.

[Function] The pallet of the present invention having the above-mentioned configuration has a material having an intrinsic viscosity of 8 in a decalin solution at 135°C on at least one side of the substrate, that is, the use surface.
It has an ultra-high molecular weight polyethylene which is above, or a surface layer mainly containing the ultra-high molecular weight polyethylene. Ultra-high molecular weight polyethylene has good mechanical properties and does not absorb water or solvents, so paints and solvents do not seep into the palette and contaminate it. Also, when mixing paints, the surface of the palette cannot be rubbed with a palette knife. It will not be damaged. Therefore, the pallet can be easily washed and used in a clean state at all times, and can maintain a good surface condition for a long period of time.

[Example] The present invention will be explained in more detail below with reference to the illustrated example.

As shown in FIGS. 1 and 2, the pallet 1 of the present invention comprises a substrate 2 and a surface layer 4 laminated on at least one side of the substrate 2 via an adhesive layer 3. It is necessary that the surface layer 4 mainly contains ultra-high molecular weight polyethylene having an intrinsic viscosity of 8 or more in a decalin solution at 135°C.

Ultra-high molecular weight polyethylene is a high-density polyethylene with a very high molecular weight, and is usually synthesized by the Ziegler method. This ultra-high molecular weight polyethylene has high hardness and good impact resistance and abrasion resistance. The inventors of the present invention have found that among these ultra-high molecular weight polyethylenes, those having an intrinsic viscosity of 8 or more in a decalin solution at 135°C are particularly suitable for the purpose of the present invention, and have completed the present invention. .

That is, ultra-high molecular weight polyethylene having an intrinsic viscosity of 8 or more in a decalin solution at 135° C. is preferable because it has high impact resistance, abrasion resistance, scratch resistance, etc., and is not eroded by water or solvents. On the other hand, the aforementioned ultra-high molecular weight polyethylene having an intrinsic viscosity of less than 8 is relatively poor in impact resistance, abrasion resistance, scratch resistance, etc., and is not suitable for the purpose of the present invention.
The surface layer 4 is preferably formed of ultra-high molecular weight polyethylene itself, but if other synthetic resins are mixed, the amount of ultra-high molecular weight polyethylene is approximately
It must be 60% or more. If the amount of ultra-high molecular weight polyethylene is less than this, the characteristic physical properties of ultra-high molecular weight polyethylene will deteriorate, and impact resistance, abrasion resistance, scratch resistance, etc. will deteriorate.

Further, the thickness of the surface layer 4 mainly made of ultra-high molecular weight polyethylene is preferably in the range of about 30μ to 500μ, preferably 100μ to 300μ. Surface layer 4
If the thickness is less than 30μ, the surface layer 4 will be easily damaged, which is not preferable. On the other hand, even if the surface layer 4 is thicker than 500μ, the effect of increasing the thickness will not increase, so this range is desirable, but the present invention is not limited to these values.

In addition, in the present invention, as shown in Figure 3,
It is also possible to provide an easy-adhesion layer 5 made of ultra-high molecular weight polyethylene and another synthetic resin having good adhesive properties on the inner side of the surface layer 4 mainly made of ultra-high molecular weight polyethylene. By providing a layer made of another resin with good adhesive properties on the inside of ultra-high molecular weight polyethylene, which originally does not have good adhesive properties, the outermost layer 4 containing ultra-high molecular weight polyethylene can be firmly attached to the substrate 2. Since it can be bonded, it is possible to prevent the surface layer 4 from peeling off.

As mentioned above, the surface layer 4 may be formed of ultra-high molecular weight polyethylene itself, but it may also be formed by mixing other synthetic resins, or by laminating it with the easily adhesive layer 5 as described above. As other synthetic resins, those that have good compatibility or adhesion with ultra-high molecular weight polyethylene and that complement each other's physical properties are preferred.
For example, olefinic polymers and unsaturated carboxylic acid modified products thereof are suitable.

Examples of olefin polymers include low, medium, and high density ethylene homopolymers, ethylene-butene-1 copolymers, ethylene-hexene-1 copolymers, ethylene-4-methylpentene-1 copolymers, and ethylene Copolymers with α-olefins mainly composed of ethylene such as -octene-1 copolymers, copolymers of ethylene with polar comonomers such as vinyl acetate and acrylic esters, propylene homopolymers,
Copolymers containing propylene as the main component with other α-olefins, butene-1 homopolymers, poly-4-
and crystalline polyolefins such as methylpentene-1, or mixtures thereof.

As unsaturated carboxylic acids for modification, acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, etc. can be used. When unsaturated carboxylic acid-modified polyolefin resin is blended with ultra-high molecular weight polyethylene, the adhesion of the surface layer 4 containing ultra-high molecular weight polyethylene becomes good, and corona discharge treatment and flame treatment of ultra-high molecular weight polyethylene, which will be described later, are unnecessary. become. However, if a polyolefin resin or modified polyolefin resin exceeding the above-mentioned limit is blended, the physical properties of the surface layer 4 will deteriorate, which is not preferable.

Other synthetic resins that can be blended or laminated with ultra-high molecular weight polyethylene include polyamide resins, polyester resins, polyvinyl chloride resins, polyvinylidene chloride resins, polyvinyl alcohol resins, and ethylene-vinyl acetate copolymers. Examples include saponified resins, polystyrene resins, polyacrylic resins, and polycarbonate resins.

As the adhesive for bonding the substrate 2 and the surface layer 4, an acrylic adhesive, a polyurethane adhesive, a chloroprene adhesive, an SBR adhesive, a natural rubber adhesive, an α-olefin maleic anhydride adhesive, a hot melt adhesive, etc. may be used. However, when the substrate 2 is made of wood and the surface layer 4 contains a resin with good adhesiveness such as an unsaturated carboxylic acid-modified olefin polymer in addition to ultra-high molecular weight polyethylene, and as described above, Surface layer 4 containing high molecular weight polyethylene
If an easy-adhesive layer 5 made of ultra-high molecular weight polyethylene and other synthetic resin with good adhesive properties is provided on the inner side, another suitable adhesive, such as a vinyl adhesive, may be used. It is possible.

When producing Palette 1 as above,
First, a substrate 2 having a shape as shown in FIG. 1 is manufactured,
The surface layer 4 is provided on at least one side of the substrate 2.
Attach using an appropriate adhesive. If the surface layer 4 is made of only ultra-high molecular weight polyethylene, or if it is made of a mixture of ultra-high molecular weight polyethylene and a resin with poor adhesion such as polyethylene or polypropylene, the adhesive surface of the surface layer 4 may be subjected to corona discharge treatment, flame treatment, etc. It is desirable to carry out the bonding after applying the usual pre-bonding treatment. In addition, the easy adhesion layer 5
When providing under the surface layer 4, the surface layer 4 and the easily bonding layer 5 are laminated in advance, and then the surface of the easily bonding layer 5 is bonded to the surface of the substrate 2 with an adhesive.

After forming a laminate as shown in the drawings in this manner, the peripheral edges, end faces and corners of the finger holes are chamfered to obtain the pallet of the present invention. Alternatively, after forming a rectangular laminate as described above, it may be processed into a pallet shape.

[Effects of the invention] The pallet of the present invention having the above-mentioned structure is hard to scratch on the surface, does not get dirty due to paint or solvent seeping into the pallet, and is easy to clean, so it can be kept clean at all times. It can be used for a long time in a safe condition.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the pallet of the present invention;
FIG. 2 is an enlarged longitudinal sectional view taken along the line - - of the same embodiment, and FIG. 3 is an enlarged longitudinal sectional view of another embodiment of the pallet of the present invention. 1...Pallet, 2...Substrate, 3...Adhesive layer, 4...Surface layer, 5...Easy adhesive layer.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of a substrate 2 and a surface layer 4 laminated on at least one side of the substrate 2 via an adhesive layer 3,
A pallet characterized in that the surface layer 4 mainly contains ultra-high molecular weight polyethylene having an intrinsic viscosity of 8 or more in a decalin solution at 135°C. 1 (2) The surface layer 4 is made of a mixture of the ultra-high molecular weight polyethylene and other thermoplastic synthetic resin, and the amount of the ultra-high molecular weight polyethylene is 60%.
Palette 1 according to claim 1 of the above-mentioned utility model registration claim. (3) Utility model registration claim 1 or 2, characterized in that an easily adhesive layer 5 made of another synthetic resin is provided between the surface layer 4 and the adhesive layer 3.
Palette 1 as described in Section 1. (4) The pallet 1 according to any one of claims 1 to 3, wherein the thickness of the surface layer 4 is in the range of 30μ to 500μ.