JPS62151321A - Postfoaming processing method for artificial marble plate - Google Patents

Abstract

PURPOSE:To manufacture a top plate for kitchen furniture having neither seam nor transparency efficiently without being restricted by a thickness of a plate, by a method wherein postfoaming processing is applied after a part of an artificial marble plate corresponding to bending processing obtained by making synthetic resin laminar by mixing up the same with an inorganic filler has been scraped off by specific size and then a resin solution obtained by mixing up an inorganic filler with the synthetic resin is cast to the part for cure. CONSTITUTION:Cutting processing is applied to parts 2, 2' behind by a thickness of 1-4mm. A width for the cutting processing is made more than one fourth of the periphery of a circle of a bending radius. After the cutting processing, the part to which the cutting processing has been applied is heated at the temperature falling within a range of 120-200 deg.C and upon heating the bending processing is applied to the part. After the bending processing, a synthetic resin solution obtained by mixing up with an inorganic filler is cast to the cutting and processing part for cure. Cured synthetic resin layers 4, 4.. can reinforce the cutting and processing part and eliminate a defect in appearance that it is transparent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to post-form processing of artificial marble for producing a top plate of kitchen furniture having a rise or an apron.

[Prior art]

Artificial marble has excellent water resistance, solidity, and a luxurious appearance, so in recent years it has come to be used as the top of kitchen furniture such as vanities and sinks.

Bathroom vanities and sinks are usually shaped with a curved rise or sag, and for artificial marble, the rise or sag is cut and then bonded with adhesive to make the joint less noticeable. Since the finish is polished with sandpaper etc., it takes a lot of man-hours.

Therefore, a method of post-form processing can be considered,
If the board is thick, post-form processability is poor. Therefore, for example, it is necessary to limit the thickness to 4 to 6 yen when bending is performed, as shown in Jitsukai No. 60-125941.

Artificial marble has a lot of inorganic filler, so 4 to 6 inches
With this thickness, there is a problem in terms of strength as a top plate, and it is necessary to reinforce it by backing it with plywood or the like.

[Purpose of the invention]

The present invention provides a method for manufacturing a top plate for kitchen furniture that can efficiently bend even thick artificial marble, does not require reinforcement such as backing, and takes advantage of the robust and luxurious appearance of artificial marble. It is something to do.

[Structure of the invention]

The present invention is an artificial marble board, which is characterized in that it is shaved so as to be on the bending part and then post-formed, and then a resin liquid containing an inorganic filler mixed with a synthetic resin is injected into that part and hardened. This is a marble post-form processing method.

The artificial marble used in the method of the present invention is made by mixing a finely powdered inorganic filler such as alumina or calcium carbonate into a low-viscosity synthetic resin liquid such as unsaturated polyester resin or methyl methacrylate resin. Formed into a high-quality plate,
It is hardened.

1 to 4 show an outline of an embodiment of post-form processing of the present invention. To explain the present invention in detail with reference to this embodiment, as shown in FIG. 1, the portion to be bent is cut by leaving a thickness of 1 to 4 mm. 1 is an artificial marble board, 2
．． 2' indicates the cutting part.

If the thickness is less than 1 mm, the strength is low and it is easy to break during bending or subsequent handling, making it difficult to handle.

If the thickness is 4 mm or more, the thermal conductivity during heating is poor, so it is difficult to heat the front and back sides to the same temperature and the bending workability is poor. The width to be cut is preferably 1/4 or more of the circumference of the bending radius. For example, for a bending radius of 2OR, 32
Better than my friend. If it is narrower than this, distortion will easily occur in the shape after bending.

Cutting can be easily performed using a router or the like.

After cutting, the cut portion is heated with a heater, for example, as shown in FIG. 3.3' indicates a heater.

As for the heater, it is convenient to use an infrared sheath heater for post-form processing of decorative laminates.

The heating temperature is in the range of 120°C to 200°C, and it is better to heat slowly compared to melamine resin decorative board.

Immediately after heating, bend it as shown in Figure 3.

For the bending method, a post-form processing device for melamine resin decorative boards can be used, but the bending process can also be carried out by hand.

After the bending process, as shown in FIG. 4, a synthetic resin liquid mixed with an inorganic filler is injected into the cut part and hardened.

In this way, the cutting part can be reinforced and the appearance defect of being see-through can be eliminated.

4.4' indicates the injected and cured synthetic resin layer.

Examples of synthetic resin liquids mixed with inorganic fillers include epoxy resin liquids! Although it is possible to use a synthetic resin solution mixed with white, in general, it is better to use a synthetic resin liquid having the same composition as the artificial marble used, since it has a sufficient reinforcing effect and an effect of preventing transparency.

〔Effect of the invention〕

The method of the present invention not only allows easy post-form processing without being restricted by the thickness of the artificial marble board used, but also has no seams or transparency, excellent water resistance, and a luxurious appearance. A top plate for kitchen furniture can be efficiently manufactured.

[Example 1] After cutting both ends of a 20 mm thick unsaturated polyester resin artificial marble board into a 15R 1/4 circle shape using a router, the width is 25mm and the cutting depth is 17mm at 100+i inside from the edge.
After cutting the grooves, heating, and bending, a curing agent was mixed into an epoxy resin liquid mixed with pigment and matched to the same color, and the mixture was injected and hardened. The thus-processed top plate was made into a top plate for a washstand by cutting holes for a washbasin bowl.

FIG. 5 shows the shape of this vanity top plate.

FIG. 6 shows a sectional view of this top plate.

[Example 2] A methyl methacrylate resin-based artificial marble board with a height of 12 mm was processed with a groove of 11 depths and 34 blade widths using a groove cutting cutter, and after heating, it was bent along a 20R mold. A hardening agent was added to a methyl methacrylate resin liquid containing aluminum hydroxide and calcium carbonate, and the mixture was injected and hardened.

After that, the sink hole and gas stand hole were punched out to create a top plate for the sink.

FIG. 7 shows the shape of this top plate. Figure 8 shows a side view of Osaka.

[Brief explanation of drawings]

1 to 4 are sectional views showing an outline of the post form processing method of the present invention. In the figure, 1 indicates an artificial marble board. 2.2' indicates the cut groove. 3.3' indicates a heater. 4.4' indicates the injection hardened synthetic resin layer. FIG. 5 is a perspective view showing the shape of the top plate of Example 10. FIG. 6 is a sectional view showing the shape of the top plate of Example 10. FIG. 7 is a perspective view showing the shape of the top plate of Example 2. FIG. 8 is a sectional view showing the shape of the top plate of Example 2.

Claims (1)

[Claims] 8m thick plate made of synthetic resin mixed with inorganic filler
The thickness of the corresponding part of the bending process of the artificial marble board of 1 to 4 m or more
It is characterized by cutting off so that the width is at least 1/4 of the circumference of the bending radius, leaving a width of 1/4 mm, and then post-forming it, and then injecting and hardening a resin liquid made of synthetic resin mixed with an inorganic filler into that part. Post-form processing method for artificial marble.