JPS6144831Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flooring material for transportation equipment that is used for truck beds, container flooring, etc. and has excellent abrasion resistance, washing resistance, and weather resistance.

Conventionally, flooring materials for truck beds, etc., have been made with impact resistance,
Since wear resistance is required, wood with excellent hardness and wear resistance such as Apitone is used as sawn wood or plywood, and a protective layer is formed on the surface by painting. There is.

However, the coating film on the surface of such flooring materials tends to crack due to wear and impact due to repeated loading and unloading of transported objects, and the coating film may peel off after long-term use or due to repeated washing with water or chemicals. There were problems such as the wood fibers becoming fluffy on the surface, which caused dirt to settle, making it unsanitary and causing the surface layer to rot.

On the other hand, in order to improve the wear resistance of the surface, it is conceivable to form a hard layer by baking and painting a highly hard thermosetting resin such as phenolic resin on the surface of the base material. During hot pressing, the resin coating layer is once melted and hardened, so it is only possible to form a thin resin coating layer, for example, 0.1 to 0.3 mm thick, and although it is hard, it has the disadvantage of being brittle against impact. However, there was a problem in that it was difficult to obtain a product that was satisfactory in terms of impact resistance.

It has also been practiced to form a glass fiber-reinforced synthetic resin layer on the surface of the substrate to improve the properties of the surface.

This is generally referred to as FRP plywood, and it is widely known that it is made by integrally molding prepreg made of glass fiber as a reinforcing material and polyester resin as a matrix onto the surface of the plywood.

In the case of such FRP plywood, the impact resistance of the resin layer is significantly improved by mixing glass fibers, and the resin layer can be formed in a wide range of thicknesses and has good surface properties. It is used as a lining material for containers, but when used as a flooring material for containers or trucks, the polyester resin layer is inferior in hardness to the hardened layer made by baking the phenolic resin, so it cannot be used for forklift nails. The surface layer of the resin layer is damaged due to repeated friction due to abrasion and movement of the cargo, and the internal glass fibers become exposed on the surface, making it easier for dirt to settle on the surface. There are problems such as adhesion and irritation to the skin of the worker, or the exposed parts become weak points, making it easy for the resin layer to break down, resulting in insufficient abrasion resistance.

In order to eliminate these drawbacks, the present invention has a structure in which a glass fiber-reinforced phenolic resin layer is layered on the surface of a substrate made of a wooden board such as plywood, and a large number of protrusions made of a hardened phenolic resin are formed on the surface of the resin layer. The present invention provides a flooring material for transportation equipment, which is characterized by the following:

To explain the drawings showing the embodiment, 1 is a board made of wood board with a thickness of 15 mm, and Apiton's 7
It is formed from ply plywood, and this veneer structure has the first,
The 2nd, 4th, 6th, and 7th layers have their fiber directions parallel to the longitudinal direction, and the 3rd and 5th layers form a cross band.

2 is the thickness of the layer that is integrally deposited on the entire surface of the substrate 1.
It is a 0.3-2.0mm glass fiber reinforced phenolic resin layer.

Reference numeral 3 denotes a protrusion that is formed substantially uniformly over the entire surface of the glass fiber reinforced phenolic resin layer 2.

The size of the board 1 depends on the type of transportation equipment,
The thickness, wood species, etc. are selected and used as appropriate.
Although not particularly limited, when used as a truck bed, as mentioned above, a plywood structure with a thickness of 15 mm or more using hard wood veneers such as Apiton has excellent dimensional stability and bending strength to withstand heavy loads. It is preferable because it has the following.

The glass fiber-reinforced phenolic resin layer 2, which is a surface protective layer of the substrate 1, is integrally formed by heat-pressing a prepreg made by impregnating a phenolic resin into a glass fiber non-woven fabric or a net or matted glass fiber on the substrate surface. It was established. The phenolic resin used to impregnate glass fibers is mixed with a curing agent, a filler, and a thickener, if necessary.

Such prepregs include what is generally called prepreg cloth, prepreg matte, SMC (sheet molding compound), etc., and have a thickness of about 0.3 to 2.0 mm, depending on the type of transportation equipment. The thickness can be arbitrarily selected and a relatively thick glass fiber reinforced layer can be uniformly provided.

Formation of the glass fiber reinforced phenolic resin layer 2 is as follows:
This may be done by placing this prepreg on a substrate 1 made of ready-made plywood and heat-pressing it, or by heat-pressing a veneer coated with a phenolic synthetic resin adhesive during the plywood manufacturing process using a hot press. When integrating the veneer, the prepreg can be placed on the surface of the laminated veneer and formed at the same time as the plywood that is the substrate. In particular, in the latter case, the prepreg can be formed simultaneously with a single hot press in the plywood production line. It can be formed with high productivity, saves manufacturing costs, and can be supplied at low cost.

In addition, the protruding portion 3 made of a cured product of phenolic resin
After integrating the above prepreg with heat and pressure on the surface of the substrate, the surface is coated with phenol resin liquid in a linear manner.
Although it can be provided in a raised manner using granular coating, when forming the glass fiber-reinforced phenolic resin layer, as shown in FIG. It can also be formed by filling the concave pattern of the mold material with phenolic resin. In this case, it is necessary to use a mold material having a fine concave pattern so that the glass fibers do not flow into the protrusion of the phenol resin.

In particular, according to this latter method, not only can the glass fiber reinforced phenolic resin layer 2 and the protrusions 3 made of the cured phenolic resin be formed simultaneously, reducing the number of manufacturing steps, but also the phenolic resin layer 2 in the prepreg can Since the protruding portion 3 is formed, the protruding portion 3 and the glass fiber reinforced phenolic resin layer 2 are completely integrated, and the bond between the two becomes strong, which is preferable because there is less chance of chipping due to friction.

At the same time, if inorganic powder such as alumina, calcium carbonate, bentonite, etc. is mixed into the phenolic resin as a filler or thickener, the hardness of the phenolic resin will be further improved and the wear resistance will be further improved. can do.

The protrusion 3 formed in this manner prevents cargo or the nails of a forklift from directly touching the glass fiber reinforced phenolic resin layer 2, thereby preventing damage to the resin layer 2, and preventing the glass fibers from touching the resin layer 2. Even if it is exposed to the surface, it prevents damage from progressing by preventing it from coming into contact with the cargo, etc. In addition, in the case of water leakage, the top surface of the protrusion drains well, so the cargo may slip and be damaged due to vibrations, etc. becomes less.

Note that the protrusion dimension of the protrusion part 3 is not particularly limited, but it is preferable to form it to a protrusion height of 0.2 mm or more in order to protect the glass fiber reinforced phenolic resin layer 2, and to form it to a protrusion height of 1.0 mm or less. This is preferable because the surface can be easily cleaned and the cargo will not be damaged.

Furthermore, the protrusions 3 may be provided almost uniformly on the surface of the resin layer, and various patterns such as granular, linear, etc. It is preferable to provide the protrusions continuously in a linear shape such as a hexagonal or mesh shape, since this reduces the chance of the protrusions missing due to abrasion and provides good abrasion resistance over a long period of time.

In the above embodiment, the glass fiber-reinforced phenolic resin layer 2 with a large number of protrusions 3 was provided on only one side of the substrate 1; Similar processing may be applied to both the front and back surfaces.

As described above, the present invention provides a glass fiber-reinforced phenolic resin layer integrally on the surface of a substrate made of a wood board material such as plywood, and a large number of protrusions made of a cured product of phenolic resin are almost uniformly formed on the surface of the resin layer. The glass fiber-reinforced phenolic resin layer is integrally attached to the surface of a substrate such as plywood, which has excellent specific strength, so that the surface of the substrate is Phenol resin is filled into small cracks and hardened to strengthen the weak points on the surface, and the phenol resin layer mixed with glass fiber significantly improves the impact resistance of the surface, preventing surface breakage due to impact from cargo. There is no peeling of the resin layer, and the surface of this resin layer is almost uniformly provided with protrusions made of cured phenolic resin, so the glass fiber reinforced phenolic resin layer is protected against abrasion caused by direct movement of cargo, etc. It will not be scratched by the nails of a forklift or a forklift, and the hard protrusion completely prevents contact with other objects, eliminating the risk of glass fibers being exposed from the resin layer. It exhibits excellent abrasion resistance as a flooring material for transportation equipment and can be used for a long period of time.

Furthermore, the phenolic resin that forms the resin layer and the protrusions has excellent chemical resistance, particularly acid resistance, and therefore exhibits good performance as a flooring material.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a simplified perspective view thereof, Fig. 2 is an enlarged sectional view taken along line A-A in Fig. 1, and Fig. 3 shows the flooring material for transportation equipment of the present invention. It is a simplified diagram showing an example of a manufacturing method. DESCRIPTION OF SYMBOLS 1...Substrate, 2...Glass fiber reinforced phenolic resin, 3...Protrusion part.

Claims (1)

[Claim for Utility Model Registration] A glass fiber-reinforced phenolic resin layer is integrally provided on the surface of a substrate made of a wood board material such as plywood, and a large number of protrusions made of a cured product of phenolic resin are substantially uniformly formed on the surface of the resin layer. A flooring material for transportation equipment that is characterized by: The flooring material for transportation equipment according to claim 1, wherein the protrusion dimension of the protrusion formed by the cured product of phenolic resin is 0.2 to 1.0 mm. A flooring material for transportation equipment according to claim 1 or 2, wherein the protrusions made of a cured product of phenolic resin are formed in a mesh shape. The transportation device according to claim 1, 2, or 3, wherein a protrusion formed by a cured phenolic resin is formed by embossing the surface of the glass fiber-reinforced phenolic resin layer. flooring. Utility model registration claims 1, 2, 3 or 3, wherein the glass fiber-reinforced phenolic resin layer and the protrusions formed by the cured phenolic resin contain inorganic powder such as alumina, calcium carbonate, bentonite, etc. The floor material for transportation equipment according to item 4.