KR20120119428A - Synthetic resin sheet manufacturing apparatus - Google Patents

Abstract

PURPOSE: Synthetic resin sheet manufacturing equipment is provided to reduce manufacturing costs by using a single melted PETG feeder. CONSTITUTION: Synthetic resin sheet manufacturing equipment comprises a PETG resin feeder(20), a PETA(Pentaerythritol Tetraacrylate) resin feeder(30), an extrusion die(40), a forming device(60). The PETG resin feeder and the PETA resin feeder supply melted PETG resin and melted PETA resin respectively. The extrusion die extrudes the melted PETG to a PETG sheet for a base layer and a PETG sheet for a surface layer. The forming device forms the extruded PETG sheet for a base layer and the extruded PETG sheet for a surface layer, a PETA sheet for a middle layer into a single synthetic resin sheet(10).

Description

Synthetic Resin Sheet Manufacturing Equipment {SYNTHETIC RESIN SHEET MANUFACTURING APPARATUS}

The present invention relates to a synthetic resin sheet manufacturing apparatus, and more particularly, to a synthetic resin sheet manufacturing apparatus that can produce a high-quality synthetic resin sheet with fewer parts, thereby reducing the manufacturing cost.

As surface finishing materials for furniture, building materials, and the like, synthetic resin sheets are frequently used.

Synthetic resin sheets are heat-bonded to the surfaces of furniture panels, building materials panels, etc., and beautifully decorate the surfaces of furniture and building materials (hereinafter referred to as "products") and protect the products from external contaminants and scratches. do. Thus, it extends the life of the product.

The synthetic resin sheet is composed of a base layer, an intermediate layer, and a surface layer, wherein the base layer is made of polyethylene terephthalate glycol (PETG) resin, the middle layer is made of polyethylene terephthalate tetraacrylate (PETA), and the surface layer is made of polyethylene terephthalate glycol (PETG). It is generally composed of a material.

On the other hand, such a synthetic resin sheet is manufactured by a synthetic resin sheet manufacturing apparatus.

As shown in FIG. 1, the synthetic resin sheet manufacturing apparatus includes a first resin supply device 1 for supplying a base layer molten resin, a second resin supply device 3 for supplying an intermediate layer molten resin, and a surface layer. And a third resin supply device 5 for supplying molten resin.

The first to third resin supply apparatuses 1, 3, and 5 are extruders for melting and extruding hoppers 1a, 3a, and 5a into which resin raw materials can be put, and melted resin mixed raw materials in a gel state. It consists of (1b, 3b, 5b).

The synthetic resin sheet manufacturing apparatus includes an extrusion die for extruding each of the base layer molten resin, the intermediate layer molten resin, and the surface layer molten resin supplied from the first to third resin supply apparatuses 1, 3, and 5 in a sheet form. 7).

The extrusion die 7 includes a first extrusion passage 7a connected to the first resin supply apparatus 1, a second extrusion passage 7b connected to the second resin supply apparatus 3, and a third resin. The 3rd extrusion flow path 7c connected with the supply apparatus 5 is provided.

These first to third extrusion passages 7a, 7b, and 7c serve to extrude the molten resins supplied from the first to third resin supply devices 1, 3, and 5 in the form of sheets. .

And the synthetic resin sheet manufacturing apparatus is provided with the molding machine 9 provided in the downstream of the extrusion die 7. As shown in FIG.

The molding machine 9 includes a plurality of forming rolls (not shown), and forms a sheet-shaped base layer melt resin, an intermediate layer melt resin and a surface layer melt resin, which are extruded from the extrusion die 7 into one sheet. .

Therefore, the synthetic resin sheet 10 composed of the base layer 10a, the intermediate layer 10b, and the surface layer 10c can be manufactured.

However, the conventional synthetic resin sheet manufacturing apparatus, although the base layer and the surface layer is made of the same PETG resin material, there is a disadvantage that the PETG melt resin for the base layer and PETG melt resin for the surface layer must be supplied separately.

And because of these disadvantages, there is a problem that two first and third resin supply device (1, 5) is required to supply the same PETG melt resin, and because of this problem should be provided with two devices to perform the same role A flaw is pointed out.

In particular, since two devices having the same role must be provided, there is a disadvantage in that there is a limit in reducing the manufacturing cost of the device, and this problem has been pointed out that the manufacturing cost is increased.

The present invention has been made to solve the conventional problems as described above, the object is to provide a synthetic resin sheet manufacturing apparatus capable of simultaneously supplying PETG molten resin for the base layer and surface layer even with one PETG melt resin supply device There is.

Another object of the present invention is to provide a synthetic resin sheet manufacturing apparatus that can significantly reduce the manufacturing cost of the device by configuring so that the PETG melt resin for the base layer and the surface layer can be supplied simultaneously with one PETG melt resin feeder. have.

The synthetic resin sheet manufacturing apparatus of the present invention for achieving the above object is a PETG melt resin in the manufacturing apparatus of the synthetic resin sheet consisting of a base layer of PETG resin material, an intermediate layer of PETA resin material, and a surface layer of PETG resin material PETG resin supply device for supplying; PETA resin supply device for supplying PETA molten resin; An extruder for extruding the PETG molten resin supplied from the PETG resin feeder into the base layer sheets and the surface layer PETG sheets on both sides, and the PETA molten resin supplied from the PETA resin feeder to the middle intermediate PETA sheet; ; And a molding machine for molding the base layer sheet, the intermediate layer PETA sheet, and the surface layer PETG sheet extruded from the extruder into one synthetic resin sheet.

Preferably, the extruder, the PETG resin extrusion passage connected to the PETG resin feeder, and the PETA resin extrusion passage connected to the PETA resin feeder; The PETG resin extrusion flow passage may include an introduction flow passage portion for introducing PETG melt resin of the PETG resin supply device and a PETG melt resin introduced into the introduction flow passage portion into a base layer sheet and a surface layer PETG sheet, respectively. A first branch channel part and a second branch channel part branched from the introduction channel part; The PETA resin extrusion flow path is formed so that the downstream portion of the PETA molten resin supplied from the PETA resin supply device can be extruded between the base layer sheet and the surface layer PETG sheet. It is characterized in that it is disposed between the flow path portion.

According to the apparatus for manufacturing a synthetic resin sheet according to the present invention, since the PETG melt resin for the base layer and the surface layer can be simultaneously supplied even with one PETG melt resin supply device, the PETG melt resin for the base layer and the surface layer is supplied as in the related art. In order to have an effect that does not need to have two PETG melt resin feeder of the same structure.

In addition, since there is no need to provide two PETG melt resin feeders of the same structure, there is an effect that can significantly reduce the manufacturing cost when manufacturing the device.

In addition, since the manufacturing cost of the device can be greatly reduced, it is possible to satisfy the demands of the consumers, thereby having the effect of greatly strengthening the competitiveness of the product.

1 is a view schematically showing a conventional synthetic resin sheet manufacturing apparatus,
2 is a view showing the configuration of a synthetic resin sheet manufacturing apparatus according to the present invention,
3 is a cross-sectional view taken along line III-III of FIG. 2 showing the configuration of a synthetic resin sheet manufacturing apparatus according to the present invention;
Figure 4 is a cross-sectional view showing an operation example of the first opening and closing valve constituting the synthetic resin sheet manufacturing apparatus of the present invention, a view showing a state in which a two-ply synthetic resin sheet is manufactured,
FIG. 5 is a cross-sectional view showing an example of the operation of the second opening / closing valve constituting the synthetic resin sheet manufacturing apparatus of the present invention.

Hereinafter, a preferred embodiment of the synthetic resin sheet manufacturing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

First, referring to Figures 2 and 3, the synthetic resin sheet manufacturing apparatus of the present invention, PETG resin supply device 20 for supplying PETG molten resin, PETA resin supply device 30 for supplying PETA molten resin It is provided.

The PETG resin feeder 20 is composed of a hopper 22 into which PETG resin raw materials can be put, and an extruder 24 for melting and extruding the injected PETG resin raw material in a gel state.

This PETG resin supply apparatus 20 melts the injected PETG resin raw material. The molten PETG resin serves as a base layer PETG melt and a surface layer PETG melt.

The PETA resin feeder 30 is composed of a hopper 32 into which PETA resin raw materials can be put, and an extruder 34 for melting and extruding the injected PETG resin raw material in a gel state.

This PETA resin supply device 30 melts the injected PETA resin raw material. And it serves to provide the molten PETA resin to the PETA melt resin for the intermediate layer.

Again, referring to Figures 2 and 3, the synthetic resin sheet manufacturing apparatus of the present invention, PETG molten resin and PETA molten resin supplied from the PETG resin supply device 20 and PETA resin supply device 30, PETG for the base layer An extrusion die 40 for extruding the sheet S1, the intermediate layer PETA sheet S2, and the surface layer PETG sheet S3 is provided.

The extrusion die 40 is composed of a head portion 40a and a body portion 40b, and is connected to the PETG resin extrusion passage 42 connected to the PETG resin supply device 20 and the PETA resin supply device 30. A PETA resin extrusion passage 44 is provided.

The PETG resin extrusion passage 42 includes an introduction passage portion 42a for introducing PETG molten resin from the PETG resin supply device 20, a first branch passage portion 42b branched from the introduction passage portion 42a; The second branch flow path portion 42c is provided.

The first branch channel part 42a is configured to correspond to the second branch channel part 42c with the PETA resin extrusion channel 44 interposed therebetween, and the PETG melted resin introduced into the introduction channel part 42a is PETG for the base layer. It serves to extrude into sheet S1.

The second branch passage 42c serves to extrude the PETG molten resin introduced into the introduction passage 42a into the PETG sheet S3 for the surface layer.

On the other hand, the 1st branch flow path part 42b and the 2nd branch flow path part 42c are equipped with the downstream diffusion channel part 42d, respectively.

As shown in FIG. 3, the diffusion flow path part 42d is a flow path whose width is wide in the width direction of the extrusion die 40, and includes a first branch flow path part 42b and a second branch flow path part ( 42c) serves to diffuse the PETG melt resin conveyed along the width direction.

Therefore, the PETG melted resin transported along the first branch channel part 42b and the second branch channel part 42c can be extruded in the form of a sheet.

It is preferable that this diffusion flow path part 42d is formed in the body part 40b of the extrusion die 40. The introduction passage portion 42a corresponding thereto is preferably formed in the head portion 40a of the extrusion die 40.

Again, referring to FIG. 2, the PETA resin extrusion passage 44 includes an introduction passage portion 44a and a diffusion passage portion 44b.

The introduction passage 44a introduces PETA molten resin from the PETA resin supply device 30 and serves to extrude the PETA molten resin thus introduced into the PETA sheet S2 for the intermediate layer.

As shown in FIG. 3, the diffusion flow path 44b is a flow path whose width is wide in the width direction of the extrusion die 40, and the PETA molten resin transferred along the introduction flow path 44a in the width direction. To spread. Therefore, the PETA melted resin transported along the introduction flow path 44a can be extruded in the form of a sheet.

As shown in FIG. 2, the diffusion passage 44b is configured such that a downstream portion thereof is disposed between the first branch passage 42b and the second branch passage 42c. Accordingly, the PETA molten resin introduced into the introduction flow path 44a is extruded between the base layer PETG sheet S1 and the surface layer PETG sheet S3, thereby forming the intermediate layer sheet S2.

In addition, the diffusion passage 44b is preferably formed in the body portion 40b of the extrusion die 40. In contrast, the introduction passage portion 44a is preferably formed in the head portion 40a of the extrusion die 40.

Referring again to FIG. 2, the extrusion die 40 includes a first opening / closing valve 50 and a second branch passage 42c provided in the first branch passage 42b of the PETG resin extrusion passage 42. ) Is provided with a second open / close valve (52).

The first opening / closing valve 50 blocks the first branch passage 42b as necessary. therefore,

As shown in FIG. 4, the PETG melt resin cannot be extruded from the first branch channel part 42b.

As a result, the PETG molten resin and the PETA molten resin can be extruded only in the second branch channel 42c of the PETG resin extrusion channel 42 and the PETA resin extrusion channel 44.

As a result, one sheet of PETA sheet S2 and one sheet of PETG sheet S3 are extruded from the extrusion die 40. Accordingly, it is possible to manufacture a synthetic resin sheet 10 consisting of two ply (10b, 10c).

The second opening / closing valve 52 cuts off the second branch passage 42c as necessary.

Thus, as shown in FIG. 5, the PETG melted resin cannot be extruded from the second branch channel portion 42c.

As a result, the PETG molten resin and the PETA molten resin may be extruded only in the first branch channel 42b of the PETG resin extrusion channel 42 and the PETA resin extrusion channel 44.

As a result, one sheet of PETG sheet S1 and one sheet of PETA sheet S2 are extruded from the extrusion die 40. Accordingly, the synthetic resin sheet 10 consisting of two plies 10a and 10b can be manufactured.

In some cases, both the first branch passage 42b and the second branch passage 42c may be blocked while the first opening / closing valve 50 and the second opening / closing valve 52 are operated at the same time.

In this case, the PETA melt resin is extruded only from the PETA resin extrusion passage 44. Therefore, one-ply synthetic resin sheet made of PETA material may also be produced.

2, the synthetic resin sheet manufacturing apparatus of this invention is equipped with the molding machine 60 provided in the downstream of the extrusion die 40. As shown in FIG.

The molding machine 60 includes a plurality of forming rolls (not shown), and includes a sheet-shaped PETG melt resin for the base layer, PETA melt resin for the intermediate layer, and PETG melt resin for the surface layer, which are extruded from the extrusion die 40. Molded into sheets.

Therefore, the synthetic resin sheet 10 composed of the base layer 10a, the intermediate layer 10b, and the surface layer 10c can be manufactured.

On the other hand, the molding machine 60, when the first opening and closing valve 50 blocks the first branch passage 42b, as shown in Figure 4, the second branch passage 42c and PETA resin extrusion PETG molten resin and PETA molten resin, respectively extruded from the flow path 44, are molded into one sheet. Therefore, the synthetic resin sheet 10 of two plies 10b and 10c is manufactured.

In addition, when the second opening / closing valve 52 blocks the second branch passage 42c, the molding machine 60 extrudes the first branch passage 42b and the PETA resin, as shown in FIG. 5. PETG molten resin and PETA molten resin, respectively extruded from the flow path 44, are molded into one sheet. Therefore, the synthetic resin sheet 10 of two ply 10a, 10b is manufactured.

Next, an operation example of the present invention having such a configuration will be described with reference to FIGS. 2 to 5.

First, referring to FIGS. 2 and 3, the device is turned on through a switch (not shown), and then the hoppers 22 and 32 of the PETG resin supply device 20 and the PETA resin supply device 30 are turned on. PETG resin and PETA resin are added respectively.

Then, the PETG and PETA resin raw materials introduced into the respective hoppers 22 and 32 are introduced into the extruders 24 and 34, and the injected PETG and PETA resin raw materials are extruded while melting.

Meanwhile, the molten PETG and PETA resin raw materials are discharged from the PETG resin supply device 20 and the PETA resin supply device 30, and the discharged PETG and PETA resin raw materials are PETG resin extrusion passages 42 of the extrusion die 40. ) And PETA resin extrusion passage 44 are respectively introduced.

At this time, the PETG melt resin introduced into the PETG resin extrusion passage 42 is divided into both sides along the first and second branch passage portions 42b and 42c, and the PETG melt resin thus divided is the diffusion passage portion 42d. It spreads along the width direction, PETG melt resin spread in the width direction is extruded in the form of a sheet. In particular, it extrudes into the PETG sheet S1 for base layers, and the PETG sheet S3 for surface layers, respectively.

The PETA molten resin introduced into the PETA resin extrusion passage 44 is spread in the width direction along the diffusion passage 44b, and the PETA melt resin diffused in the width direction is in the form of a sheet along the diffusion passage 44b. Is extruded. In particular, it is extruded to the PETA sheet | seat S2 for intermediate | middle layers.

Meanwhile, the base layer PETG sheet S1, the intermediate layer PETA sheet S2, and the surface layer PETG sheet S3 extruded from the extrusion die 40 into a sheet form are introduced into the molding machine 60.

And the base layer PETG sheet (S1) and the intermediate layer PETA sheet (S2) and the surface layer PETG sheet (S3) introduced into the molding machine 60 is press-molded by the molding machine 60, one synthetic resin sheet (10) Is manufactured.

In particular, it is made of a three-ply synthetic resin sheet 10 consisting of a PETG base layer (10a), PETA intermediate layer (10b) and PETG surface layer (10c).

On the other hand, when manufacturing a two-ply synthetic resin sheet consisting of a PETG layer and a PETA layer, one of the first and second opening and closing valves (50, 52) is blocked.

Then, as illustrated in FIGS. 4 and 5, any one of the first branch channel part 42b and the second branch channel part 42c is blocked. Thereby, the extrusion die 40 extrudes only one sheet | seat among both PETG sheets S1 and S3.

As a result, one sheet of PETG sheets S1 and S3 and one PETA sheet S2 are extruded from the extrusion die 40. Thus, a synthetic resin sheet 10 composed of two plies 10a and 10b is produced.

According to the synthetic resin sheet manufacturing apparatus of the present invention having such a configuration, since the PETG melt resin for the base layer and the surface layer can be supplied simultaneously with one PETG melt resin supply device 20, the base layer and the surface layer as in the prior art In order to supply the PETG molten resin for the PETG molten resin supply apparatus 20 of the same structure does not need to be provided.

In addition, since the PETG melt resin supply apparatus 20 having the same structure does not need to be provided two by two, it is possible to significantly reduce the manufacturing cost during the manufacturing of the device.

In addition, since the manufacturing cost of the device can be greatly reduced, it is possible to satisfy the demands of consumers, thereby greatly strengthening the competitiveness of the device.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

10: synthetic resin sheet 10a: base layer
10b: intermediate layer 10c: surface layer
20: PETG resin feeder 22: Hopper
24: Extruder 30: PETA Resin Feeder
32: Hopper 34: Extruder
40: extrusion die 40a: head part
40b: body 42: PETG resin extrusion flow path
42a: introduction channel part 42b: first branch channel part
42c: second branch channel 42d: diffusion channel
44: PETA resin extrusion flow path 44a: introduction flow path
44b: diffusion passage 50: first open / close valve
52: second opening and closing valve 60: molding machine
S1: PETG sheet for base layer S2: PETA sheet for intermediate layer
S3: PETG Sheet for Surface Layer

Claims (5)

In the manufacturing apparatus of the synthetic resin sheet 10 which consists of the base layer 10a of PETG resin material, the intermediate layer 10b of PETA resin material, and the surface layer 10c of PETG resin material,
PETG resin supply device 20 for supplying PETG molten resin;
PETA resin supply device 30 for supplying PETA molten resin;
The PETG melt resin supplied from the PETG resin supply device 20 is extruded into PETG sheets S1 for both base layers and PETG sheets for surface layers S3, respectively, and PETA melted supplied from the PETA resin supply device 30. An extrusion die 40 for extruding the resin into the intermediate intermediate PETA sheet S2;
Molding machine 60 for molding the base layer PETG sheet (S1), the intermediate layer PETA sheet (S2) and the surface layer PETG sheet (S3) extruded from the extrusion die 40 into one synthetic resin sheet (10) Synthetic resin sheet manufacturing apparatus comprising a. The method of claim 1,
The extrusion die 40,
A PETG resin extrusion passage 42 connected to the PETG resin supply device 20 and a PETA resin extrusion passage 44 connected to the PETA resin supply device 30;
The PETG resin extrusion passage 42 includes an introduction passage portion 42a for introducing the PETG melt resin of the PETG resin supply device 20 and a PETG melt resin introduced into the introduction passage portion 42a for the base layer. And a first branch channel part 42b and a second branch channel part 42c branched from the introduction channel part 42a so as to be extruded into the PETG sheet S1 and the PETG sheet S3 for the surface layer, respectively. ;
The PETA resin extrusion passage 44 is downstream so that the PETA molten resin supplied from the PETA resin supply device 30 can be extruded between the PETG sheet S1 for the base layer and the PETG sheet S3 for the surface layer. Synthetic resin sheet production apparatus characterized in that the side portion is disposed between the first branch flow path (42b) and the second branch flow path (42c). The method of claim 2,
Each of the PETG resin extrusion passage 42 and the PETA resin extrusion passage 44 is
And a diffusion flow passage part (42d, 44b) for spreading the PETG molten resin and the PETA molten resin introduced into a sheet form and extruding the sheet in the form of a sheet. The method of claim 3, wherein
The extrusion die 40,
The upper head portion 40a and the lower body portion 40b are provided, and the diffusion passage portion 42d of the PETG resin extrusion passage 42 and the diffusion passage portion 44b of the PETA resin extrusion passage 44 are provided. Synthetic resin sheet manufacturing apparatus characterized in that formed on the body portion (40b). The method according to any one of claims 2 to 4,
A first opening / closing valve 50 capable of opening / closing the first branch passage 42b of the PETG resin extrusion passage 42 and a second opening / closing valve capable of opening / closing the second branch passage 42c ( 52),
The first and second open / close valves 50 and 52 may allow the PETG molten resin to be extruded from only one of the first branch channel part 42b and the second branch channel part 42c. Synthetic resin sheet manufacturing apparatus characterized in that the branch flow path portion (42b) and the second branch flow path portion (42c) selectively block.

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