KR20170058662A - cutting curl preventing method of artificial marble - Google Patents

cutting curl preventing method of artificial marble Download PDF

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Publication number
KR20170058662A
KR20170058662A KR1020150162534A KR20150162534A KR20170058662A KR 20170058662 A KR20170058662 A KR 20170058662A KR 1020150162534 A KR1020150162534 A KR 1020150162534A KR 20150162534 A KR20150162534 A KR 20150162534A KR 20170058662 A KR20170058662 A KR 20170058662A
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KR
South Korea
Prior art keywords
artificial marble
plate
type
heating device
cradle
Prior art date
Application number
KR1020150162534A
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Korean (ko)
Other versions
KR101998913B1 (en
Inventor
공진연
정두용
정철
신대근
손기벽
Original Assignee
(주)엘지하우시스
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Priority to KR1020150162534A priority Critical patent/KR101998913B1/en
Publication of KR20170058662A publication Critical patent/KR20170058662A/en
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Publication of KR101998913B1 publication Critical patent/KR101998913B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B77/00—Kitchen cabinets
    • A47B77/02—General layout, e.g. relative arrangement of compartments, working surface or surfaces, supports for apparatus
    • A47B77/022—Work tops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/027—Feeding the moulding material in measured quantities from a container or silo by using a removable belt or conveyor transferring the moulding material to the moulding cavities
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/08—Flooring or floor layers composed of a number of similar elements only of stone or stone-like material, e.g. ceramics, concrete; of glass or with a top layer of stone or stone-like material, e.g. ceramics, concrete or glass

Abstract

The present invention relates to a method of preventing warpage of artificial marble by preventing both edges of a plate artificial marble from being cut and warped by removing the residual stress by heating both sides of the plate artificial marble .

Description

[0001] The present invention relates to an artificial marble,

The present invention relates to an artificial marble, and more particularly, to a method of preventing cutting and warping of an artificial marble to prevent cutting and warping of a band-shaped artificial marble formed by cutting the edge of the plate-like artificial marble.

The use of artificial marbles such as those disclosed in Korean Patent Laid-open No. 10-2015-0007430 (published on May 21, 2015) and the like as a kitchen top plate and flooring is increasing.

Artificial marble has a texture and pattern that is less expensive than natural marble but difficult to distinguish from natural marble, and can produce a natural and luxurious decoration effect.

For this reason, a large number of consumers are choosing artificial marble as a kitchen top or flooring when decorating.

On the other hand, conventional artificial marble is produced by a process of mixing and kneading a raw material, a step of extruding a raw material in a kneaded state, a step of molding a raw material extruded in a kneading state into a plate shape, a step of curing the molded article, A step of cutting the cooled product to a predetermined standard, and a step of polishing the surface of the cut product.

 At this time, in the step of curing the molded product, the heating degree of the central portion and the peripheral portion of the molded product must be different from each other, resulting in temperature unevenness.

When temperature unevenness occurs in the manufacturing process of the plate-type artificial marble as described above, it does not affect the product at the time of shipment. However, in the interior construction process after the product is shipped, When the band-shaped artificial marble is cut to a certain width, the longitudinal residual stress causes the longitudinally middle portion of the band-shaped artificial marble to be cut and warped, that is, the band-shaped artificial marble cut to a constant width, It is difficult to use the strip-type artificial marble cut with the cut-off type artificial marble.

For the above reasons, in the field of the art, there has been sought a method of preventing the cutting and warping of the artificial marble due to the residual stress, but up to now, satisfactory results have not been obtained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method of manufacturing an artificial marble by cutting a side edge portion of a plate- The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of preventing warpage of artificial marble.

According to a first aspect of the present invention, there is provided a method for preventing warpage of artificial marble, comprising: a first step of mounting plate artificial marble on a cradle; And a second step of removing residual stress by heating both side surfaces of the plate-type artificial marble placed on the cradle with a radiation type heating device so that the surface temperature reaches 55-65 ° C.

The plate artificial marble may be laminated on the cradle in a plurality of layers.

The plate artificial marble may be arranged on the upper, lower, upper, lower, left, and right sides with a shielding plate for heat shielding.

The shielding plate may be disposed so that its outer periphery coincides with the upper and lower outer edges of the plate artificial marble, or the upper, lower, left and right outer edges thereof.

The radiating type heating apparatus may be installed at intervals on both sides of the plate artificial marble.

The radiating type heating apparatus may be formed in an oven shape.

The radiative heating apparatus may use at least one of a far infrared lamp, a medium infrared lamp, a near infrared lamp, a magnetron, and a thermal oil heater as a heating source.

The heating sources may be arranged in plural in the longitudinal direction and in the lateral direction.

The method for preventing warpage of artificial marble according to the second embodiment of the present invention includes: a first step of mounting plate artificial marble on a cradle; And a second step of removing residual stress by heating both side surfaces of the plate-type artificial marble placed on the cradle with a convection type heating device at 90 to 110 ° C for 5-70 minutes.

The plate artificial marble may be laminated on the cradle in a plurality of layers.

The plate artificial marble may be arranged on the upper, lower, upper, lower, left, and right sides with a shielding plate for heat shielding.

The shielding plate may be disposed so that its outer periphery coincides with the upper and lower outer edges of the plate artificial marble, or the upper, lower, left and right outer edges thereof.

The convection type heating apparatus may be installed at intervals on both sides of the plate artificial marble.

The convective heating apparatus may be formed in an oven shape.

The convective heating apparatus may use at least one of a fan heater and hot steam as a heating source.

Oven type The convection type heating device may have a conveying means extending from the outside to the inside.

The conveying means may be formed in the form of a conveyor.

In the method of preventing the cutting and bending of artificial marble according to the present invention, both side surfaces of the artificial marble are heated by a heating device, and residual stress is removed in the process of heating both sides of the artificial marble. Shaped artificial marble is formed by cutting the marginal portion of the artificial marble, the cutting warpage due to the residual stress is prevented, so that the interior construction using the artificial marble of the band type can be smoothly performed and the defective construction can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic process diagram of a method for preventing cutting deflection of artificial marble according to the first embodiment of the present invention. Fig.
Fig. 2 is an exemplary view for explaining the mounting of a plate-type artificial marble in the method of preventing warpage of artificial marble according to the first embodiment of the present invention. Fig.
Fig. 3 is an exemplary view for explaining the arrangement of a shielding plate to a plate-type artificial marble in the method of preventing warpage of artificial marble according to the first embodiment of the present invention. Fig.
FIG. 4 is an exemplary view for explaining heating on both sides of a plate-type artificial marble through a radiation type heating device provided at intervals on both sides of the plate-type artificial marble in the method of preventing cutting deflection of the artificial marble according to the first embodiment of the present invention .
Fig. 5 is an exemplary view for explaining a heating source arrangement mode of the radiation type heating apparatus in the method of preventing cutting deflection of artificial marble according to the first embodiment of the present invention. Fig.
6 is a schematic process chart of a method for preventing cutting deflection of artificial marble according to the second embodiment of the present invention.
Fig. 7 is an exemplary view for explaining heating on both sides of a plate-type artificial marble through an oven-type convection type heating device in a method of preventing cutting deflection of artificial marble according to a second embodiment of the present invention;
8 is an exemplary view for explaining the occurrence of cutting deflection in artificial marble.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the method of preventing cutting and bending of artificial marble 100 according to the first embodiment of the present invention includes a first step S1 and a second step S2.

In the first step (S1), the plate artificial marble 100 is placed on the table 200.

In the first step S1, the plate-type artificial marble 100 is laminated on the cradle 200 in a plurality of layers, thereby forming the radiating type heating apparatus 300 of the second step S2 described below Type artificial marble 100 can be heated at the same time by heating the both sides of the plate-type artificial marble 100 through the radiating type heating device 300. As a result, do.

In the first step S1, the plate-type artificial marble 100 is provided with a blocking plate 400 for blocking heat on the upper, lower, upper, lower, left, and right sides, Is concentrated on both sides of the plate-type artificial marble 100.

At this time, the shield plate 400 is arranged so that its outer periphery coincides with the upper and lower outer edges of the plate artificial marble 100, or the upper, lower, left, and right outer edges of the plate artificial marble 100, It is possible to relatively reliably block the upper, lower, upper, lower, left, and right surfaces of the plate-type artificial marble 100, so that the heat from the radiation type heating device 300 can be prevented from being interfered with by the blocking plate 400 And is concentrated on both sides of the plate-type artificial marble 100.

Meanwhile, in the first step S1, the cradle 200 may have any shape and / or shape as long as it can stably support the plate-type artificial marble 100 and can prevent deformation and damage due to heating. A detailed description of the cradle 200 is omitted. For example, the cradle 200 may be made of wood or a synthetic resin pallet.

In addition, in the first step S1, the blocking plate 400 can stably block heat on the upper and lower surfaces of the plate-type artificial marble 100, and can prevent deformation and damage due to heating The present invention is not limited to this, and any detailed description of the blocking plate 400 is omitted, for example, it may be a waste artificial marble.

In the second step S2, both side surfaces of the plate-type artificial marble 100, which are placed on the stage 200, are heated by the radiating type heating device 300 so that the surface temperature reaches 55-65 DEG C, .

If the surface temperature of the plate-like artificial marble 100 heated by the radiation type heating device 300 does not reach 55 ° C, the residual stress of the plate-type artificial marble 100 due to heating may be insufficient, If the surface temperature of the plate-type artificial marble 100 heated by the radiation type heating device 300 exceeds 65 ° C, the plate-type artificial marble 100 is excessively heated, causing a cutting warp in the direction opposite to that before The radiating type heating device 300 is preferably heated so that the surface temperature of the plate-type artificial marble 100 reaches 55-65 ° C.

At this time, the radiating type heating device 300 is installed at both sides of the both sides of the plate artificial marble 100 to heat both sides of the plate artificial marble 100 simultaneously through the radiating type heating device 300 So that the working time is shortened as compared with the alternating heating of one side of the plate artificial marble 100, and both sides of the plate artificial marble 100 are uniformly heated.

Here, the radiating type heating apparatus 300 may be formed in an oven shape (not shown in the drawing, see FIG. 7).

In the case where the radiating type heating apparatus 300 is in the form of an oven, since the opening is blocked, the heat loss to the outside is reduced and the energy consumption is reduced.

At this time, the oven type radiating type heating device 300 has the conveying means extending from the outside to the inside, so that the plate-type artificial marble 100 can be easily conveyed from the outside to the inside by the conveying means.

Here, the conveying means is formed in a conveyor shape so as to seat the cradle in which the plate-type artificial marble is laminated on the conveying means, and then the conveying means is operated to move the oven- The artificial marble 100 is more easily conveyed.

The radiating type heating apparatus 300 uses at least one of a far infrared ray lamp, a medium infrared ray lamp, a near infrared ray lamp, a magnetron, and a thermal oil heater as a heating source 310, Heating is possible.

5, the heating sources 310 are arranged at a plurality of intervals in the longitudinal direction and the transverse direction, respectively, so that the heating sources 310 are heated simultaneously, and the plate artificial marble 100 ) Is relatively uniformly heated.

In addition, as shown in FIG. 6, the method of preventing the cutting and warping of the artificial marble 100 according to the second embodiment of the present invention includes a first step S1 'and a second step S2'.

In the first step S1 ', the plate artificial marble 100 is placed on the cradle 200.

In the first step S1 ', the plate-type artificial marble 100 is laminated on the cradle 200 in a plurality of layers to form the convection type heating apparatus 300 of the second step S2' ', It is possible to simultaneously heat both side surfaces of the plate-type artificial marble 100. Thus, compared with heating the both side surfaces of the plate-type artificial marble 100 individually through the convection type heating device 300' Work time is shortened.

In the first step S1 ', the plate-type artificial marble 100 is installed in the convection type heating apparatus 300' by disposing a blocking plate 400 for blocking heat on the upper, lower, upper, lower, left, Are concentrated on both sides of the plate-like artificial marble 100.

Here, since the cradle 200 and the shield plate 400 are the same as those described in the first embodiment of the present invention, further description is omitted.

In the second step S2 ', both side surfaces of the plate-type artificial marble 100, which are placed on the platform 200, are heated to 90-110 ° C. for 5-70 minutes by the convection type heating device 300' Stress is removed.

At this time, if the heating time of the convection type heating device 300 'is less than 5 minutes, the residual stress of the plate-type artificial marble 100 due to heating may be insufficient, and the convection type heating device 300' ) Is more than 70 minutes, the plate-type artificial marble 100 may be excessively heated to cause surface smearing, surface discoloration and the like, and in particular, the cutting warpage may occur in the direction opposite to that before, The convection type heating device 300 'preferably heats the plate artificial marble 100 for 5 to 70 minutes.

If the heating temperature of the convection type heating device 300 'is less than 90 ° C, the residual stress of the plate-type artificial marble 100 may be insufficiently removed by heating, and the convection type heating device 300' The plate-type artificial marble 100 may be excessively heated to cause surface smearing, surface discoloration and the like, and in particular, cutting deflection may occur in the direction opposite to the previous direction, The method heating apparatus 300 'preferably heats the plate-type artificial marble 100 to 90-110 ° C.

The convection type heating apparatus 300 'may be installed at intervals on both sides of the plate-type artificial marble 100 (see FIG. 4, not shown in the drawing) as in the case of the radiating type heating apparatus 300 And may be formed in an oven shape as shown in FIG.

The convection type heating apparatus 300 'uses at least one of a fan heater and hot steam as the heating source 310' to prevent the plate artificial marble 100 from being excessively heated.

At this time, when the heating source 310 'is used in duplicate, heating of the plate-type artificial marble 100 is more smooth, so that residual stress can be smoothly removed even if the heating time of the plate-type artificial marble 100 is shortened.

The oven-type convection type heating apparatus 300 'has a conveying means 320 extending from the outside to the inside thereof, so that the plate-like artificial marble 100 can be easily conveyed from the outside to the inside by the conveying means 320 .

The conveying means 320 is formed in the form of a conveyor so as to seat the cradle 200 on which the plate artificial marble 100 is stacked on the conveying means 320 and to operate the conveying means 320, Form The artificial marble 100 is more easily conveyed from outside to inside of the convection type heating device 300 '.

The following will describe in detail the prevention of the cutting and bending of the artificial marble 100 by the above-described method of preventing the cutting and bending of the artificial marble 100 according to the present invention.

First, the plate artificial marble 100 is mounted on the cradle 200.

That is, the first step (S1, S1 ') according to the present invention is performed.

2, the plate-type artificial marble 100 is laminated on the cradle 200 in a plurality of layers, and in the second step S2 and S2 ' Or a plurality of the plate-like artificial marbles 100 are simultaneously heated by the convection type heating device 300 '.

As shown in FIG. 3, the plate-like artificial marble 100 stacked on the cradle 200 is placed on the upper, lower, upper, lower, left, and right sides (not shown in the figure) When a plurality of plate artificial marbles 100 are simultaneously heated by the radiating type heating apparatus 300 or the convection type heating apparatus 300 'in the second step S2 and S2' The side surface is intensively heated.

Next, both side surfaces of the plate-like artificial marble 100 mounted on the cradle 200 are heated.

That is, the second step (S2, S2 ') according to the present invention is performed.

In the present invention, the radiating type heating apparatus 300 may be disposed at intervals on both sides of the plate artificial marble 100 mounted on the cradle 200 as shown in FIG. 4, As the type heating apparatus 300 is operated, both side surfaces of the plate-type artificial marble 100 are heated, thereby removing the residual stress remaining in the plate-type artificial marble 100.

In addition, in the present invention, the convection type heating device 300 'may be formed in an oven shape. After the plate-type artificial marble 100 is inserted into the oven-type convection type heating device 300' The both sides of the plate artificial marble 100 are heated by operating the systematic heating device 300 'so that the residual stress remaining in the plate artificial marble 100 is removed.

Since the convection type heating apparatus 300 'includes the conveying means 320, the plate-type artificial marble 100 is moved from the outside of the convection type heating apparatus 300' by the operation of the conveying means 320 And is easily transported to the inside.

Meanwhile, Table 1 below is a comparison table comparing the effects of preventing the cutting and warping according to the experimental example when the plate-type artificial marble 100 is heated by the radiating type heating device 300.

Distance from heating device (mm) Heating time (min) Starting temperature (℃) Surface temperature after heating (℃) Cutting bending result (mm) Experimental Example 1 125 0 17 17 25 Experimental Example 2 125 15 20 60 0 Experimental Example 3 125 15 24 65 0 Experimental Example 4 125 20 17 70 (Reverse) 22 Experimental Example 5 125 30 25 80 (Reverse) 210

Table 1 shows that when the surface temperature of both side surfaces of the plate-type artificial marble 100 heated by the radiation type heating device 300 reaches 50-60 ° C, the cutting deflection is remarkably prevented, that is, the residual stress is removed. .

Table 2 below is a comparison table comparing the effects of preventing the cutting and warping according to the experimental example when the plate artificial marble 100 is heated by the convection type heating device 300 '.

Heating temperature (℃) Heating time (min) Cutting bending result (mm) Experimental Example 1 0 0 25 Experimental Example 2 105 15 3 Experimental Example 3 105 30 3 Experimental Example 4 105 45 3 Experimental Example 5 105 60 3

It can be seen from Table 2 that when the side surfaces of the plate-type artificial marble 100 are heated to 105 ° C. for 15 to 60 minutes by the convection type heating device 300 ', the cutting deflection is remarkably prevented, that is, the residual stress is removed .

As described above, in the method of preventing warpage of the artificial marble 100 according to the present invention, both sides of the plate-type artificial marble 100 are heated by the heating devices 300 and 300 ' Since the residual stress is removed during the heating of both sides, even when the marginal portion of the plate-type artificial marble 100 is cut in the interior construction process, cutting bending due to the residual stress is prevented even if the band-type artificial marble 100 is formed, The interior construction using the marble 100 can be smoothly performed and the construction failure can be prevented.

As described above, the present invention is not limited to the above-described embodiments, and can be modified without departing from the gist of the present invention as claimed in the claims. And falls within the scope of protection of the invention.

100: Artificial marble 200: Cradle
300, 300 ': Heating device 310, 310': Heating source
320: conveying means 400: blocking plate
S1, S1 ': first step S2, S2': second step

Claims (14)

A first step of mounting plate-type artificial marble on a cradle; And a second step of removing residual stress by heating both side surfaces of the plate-type artificial marble placed on the cradle with a radiating type heating device so that the surface temperature reaches 55-65 ° C. Way.
A first step of mounting plate-type artificial marble on a cradle; And a second step of removing residual stress by heating both side surfaces of the plate-type artificial marble placed on the cradle with a convection type heating device at 90 to 110 DEG C for 5 to 70 minutes. .
3. The method according to claim 1 or 2,
Wherein the plate-like artificial marble is laminated on the cradle in a plurality of layers.
3. The method according to claim 1 or 2,
Wherein the plate artificial marble is provided with a blocking plate for heat shielding on the upper and lower surfaces or on the upper, lower, left, and right sides of the artificial marble.
5. The method of claim 4,
Wherein the shielding plate is disposed such that an outer periphery thereof coincides with an upper or lower outer edge of the plate artificial marble or an upper, lower, left, or right outer edge of the plate artificial marble.
The method according to claim 1,
Wherein said radiating type heating device is installed at intervals on both sides of said plate-type artificial marble.
The method according to claim 1,
Wherein the radiating type heating device is formed in an oven shape.

The method according to claim 1,
Wherein the radiating type heating device uses at least one of a far infrared ray lamp, a medium infrared ray lamp, a near infrared ray lamp, a magnetron, and a thermal oil heater as a heating source.
9. The method of claim 8,
Wherein the heating sources are arranged in plural in the longitudinal direction and in the transverse direction at intervals.
3. The method of claim 2,
Wherein the convection type heating device is installed on each of both side surfaces of the plate-type artificial marble with an interval therebetween.
3. The method of claim 2,
Wherein the convection type heating device is formed in an oven shape.
3. The method of claim 2,
Wherein the convection type heating apparatus uses at least one of a fan heater and hot steam as a heating source.
12. The method of claim 11,
Oven type The convection type heating device has a conveying means extending from the outside to the inside.
14. The method of claim 13,
Wherein the conveying means is formed in the form of a conveyor.
KR1020150162534A 2015-11-19 2015-11-19 cutting curl preventing method of artificial marble KR101998913B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970001248A (en) * 1995-06-07 1997-01-21 알프레드 엘. 미첼슨 Method for producing non-porous high purity fused silica glass
KR200304667Y1 (en) * 2002-11-12 2003-02-15 주식회사 효원 Artifical marble heat treatment equipment for artificial marble washstand manufacture
KR100521621B1 (en) * 2002-12-24 2005-10-12 주식회사 엘지화학 Method for continuously producing artificial marble and apparatus therefor
KR20110074324A (en) * 2009-12-24 2011-06-30 전재석 Artificial stone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970001248A (en) * 1995-06-07 1997-01-21 알프레드 엘. 미첼슨 Method for producing non-porous high purity fused silica glass
KR200304667Y1 (en) * 2002-11-12 2003-02-15 주식회사 효원 Artifical marble heat treatment equipment for artificial marble washstand manufacture
KR100521621B1 (en) * 2002-12-24 2005-10-12 주식회사 엘지화학 Method for continuously producing artificial marble and apparatus therefor
KR20110074324A (en) * 2009-12-24 2011-06-30 전재석 Artificial stone

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