KR20120139159A - Manufacturing apparatus for window profile using coextrusion - Google Patents

Abstract

PURPOSE: A manufacturing facility for a window and door profile using the co-extrusion is provided to improve the reality of an embossed pattern by increasing the size of an embossing-roll. CONSTITUTION: A manufacturing facility for a window and door profile using the co-extrusion includes a die(30), a calibrator(70), and an embossing roll(50). The embossing-roll is located in between the die and the calibrator, for forming an embossed pattern on the profile. The embossing-roll includes first and second protrusions in an atypical shape. The die includes a curved unit for storing the embossing-roll.

Description

Manufacturing facilities for window profiles using coextrusion {MANUFACTURING APPARATUS FOR WINDOW PROFILE USING COEXTRUSION}

The present invention relates to a facility for producing a window profile having the texture of natural wood by using coextrusion technology, specifically, extrudes a resin composition containing wood powder on the surface of the profile, and gives natural embossing to the surface. The present invention relates to a profile manufacturing facility for windows and doors with embossing rolls and cooling devices for realizing the texture of natural wood.

Referring to the extrusion process for manufacturing the profile of the conventional windows and doors, as shown in Figure 1, through the hopper (2) of the extruder (1), the pellet (pellet) or compound form (compound) made of a thermoplastic resin to be the material of the profile When the material of is injected, it is heated by a heater in the heating cylinder in the extruder 1, melted in a gel state, and conveyed by the rotation of the screw, and is extruded into the die 3 at its front end. Then, the molten resin is extruded in a state having a predetermined shape through the die 3 and then passed through the calibrator 4 and the cooling device 5.

The calibrator 4 is a facility in which the profile P passed through the die 3 is molded into a product of accurate dimensions and planned shapes while maintaining the outer surface shape. Therefore, the calibrator 4 is preferably positioned immediately after passing through the die so that the profile passing through the die enters the calibrator directly without deforming its shape. Then, the product passing through the calibrator (4) is cooled while passing through the cooling device (5), is pulled with a constant force through the take-off (6), and then cut to a predetermined size set while passing through the cutter Window profile products are primarily completed.

In addition, in order to have a variety of textures or patterns on the upper surface or the side exposed to the outside during construction in the window profile, a decorative film (sheet paper) of synthetic resin is attached to have a wood texture instead of a synthetic resin texture to enhance aesthetics.

 However, in order to attach a separate film or sheet to the extruded window profile, it is necessary to move separately to the place where the profile lapping facility is installed, and then go through the process of lapping the extruded profile on the lapping apparatus to produce efficiency and cost. It is disadvantageous in, difficult to repair if scratches occur during transportation, processing, and construction after lapping, and there is a disadvantage that the use environment is not good because the adhesive is used for lapping.

In order to overcome this, a double extrusion (coextrusion) method of double extrusion of the window profile was used. Double extrusion is a method of extruding and adhering PVC or other raw materials to one side of the profile using a sub-extruder in a state where the profile is extruded to have a uniform shape by using the extruder as described above.

However, even in this case, there was a disadvantage that the appearance of the PVC profile surface is not natural, and in the case of such a PVC profile surface, there is a problem such as discoloration to damage the aesthetics.

In order to improve the reality on the surface of the profile, an embossing roll (not shown) is disposed between the die 3 and the calibrator 4 to form a pattern of the surface of the embossing roll on the surface of the profile extruded from the die. There was a case. However, as described above, the calibrator 4 had to be positioned immediately adjacent to the die immediately after passing through the die, thereby limiting the diameter of the embossing rolls disposed therebetween. The length of the circumference of the embroidery roll is also limited because the size of the diameter is limited, and consequently, the repetition period of the pattern repeatedly formed on the surface of the profile is shortened and the reality is deteriorated.

The present invention is to solve the above problems, in order to provide a window profile that gives a luxurious feeling by implementing a natural wood texture of the surface of the profile, giving the reality to the embossed pattern by increasing the size of the embossing roll, It is also an object of the present invention to provide a profile manufacturing facility in which the embossed pattern provided on the surface of the profile is not damaged.

The present invention is a main extruder (10) for melt extrusion of the water support material, a die (30) for discharging the resin to be extruded in a certain shape profile, a calibrator (70) to maintain the profile of the profile discharged from the die, In the window profile manufacturing equipment comprising a cooling device 90 for cooling the profile passed through the calibrator, between the die 30 and the calibrator 70 embossing roll 50 to form an embossed pattern on the surface of the profile The embossing roll is provided, and provides the window profile manufacturing equipment characterized by including the 1st protrusion 53 formed in the surface, and the 2nd protrusion 55 formed in the said 1st protrusion.

The first and second protrusions have an irregular shape, and the die 30 has a curved portion 35 for receiving the embossing roll.

In the cooling device 90, a plurality of disks 93 having a hollow inside are arranged to support the profile, and a roller 95 for line contact with the profile is provided on the upper side of the hollow inside the disk. Provides a window profile manufacturing equipment.

Further comprising a sub-extruder 100 for extruding the co-extrusion resin composition containing wood powder to the die 30, to form a skin layer of natural wood texture on one side of the profile, the co-extrusion resin composition is wood powder It may contain.

In the window profile of the present invention, the size of the embossing roll increases the reality of the embossing pattern imparted by the embossing roll, and the embossing pattern applied to the surface of the profile is not damaged. The skin layer formed integrally by extrusion maintains the natural wood texture aesthetic effect, giving a luxurious feel to the aesthetics of the product.

1 is a schematic view of a facility for producing a window profile according to the prior art,
2 is a schematic view of a facility for producing a window profile according to an embodiment of the present invention,
3 is a perspective view showing an extrusion method by an extruder and a sub-extruder according to the present invention,
Figure 4 is a cross-section of the profile produced by extrusion to the production equipment according to the present invention,
5 is a perspective view of an embossing roll according to the present invention,
6 is a cross-sectional view and an enlarged view of the embossing roll of the present invention,
7 is a cross-sectional view and an enlarged view of the embossing roll according to the prior art,
8 is a coextrusion apparatus for producing a window profile according to the present invention, which is viewed from a direction different from that of FIG.
9 is a cross-sectional shape of the die and the embossing roll in FIG.
10 is a perspective view of a disk of the cooling apparatus of the coextrusion apparatus according to the present invention,
11 is a cross-sectional view of the sub-extruder connector of the co-extrusion plant according to the present invention,
12 is a cross-sectional shape of a connector according to the prior art,
13 is a state in which a pattern is formed on the profile in the coextrusion facility,
14 is a state in which the profile pattern is formed in the co-extrusion facility according to the present invention,
15 is a view of the actual product produced using the co-extrusion according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention.

2 is a schematic view of a coextrusion plant producing a window profile according to an embodiment of the present invention. Referring to FIG. 2, pellets or compounds made of thermoplastic resin materials such as polystyrene (PS), polyethylene (PE), polypropylene (PS), polyvinyl chloride (PVC), and ABS resin are formed through the hopper 20 of the main extruder 10. When the material is introduced, it is heated by a heater, which is a heating means in the main extruder 10, melted in a gel state, and transferred forward by rotation of a screw. Thereafter, the profile P is extruded in a state of being shaped through the die 30 placed in front of the die 30, and then passed through the calibrators 70 and 80 and the cooling device 90. Since passing through is similar to the related art, a detailed description will be avoided.

The calibrator 70 is positioned immediately after passing through the die, so that the profile passing through the die enters the calibrator directly without being deformed in shape. In addition, the profile P is preferably surface cooled by the surface cooling device 60 before entering the calibrator. If the profile is directly inserted into the calibrator without cooling the surface of the profile, there may be a problem that the embossed pattern expressed on the profile surface is damaged due to the surface friction between the profile molding resin and the internal metal surface inside the calibrator. In this case, the cooling medium is preferably air. In other words, in the surface cooling apparatus, air is uniformly sprayed onto the molding part toward the profile to rapidly cool the profile surface.

Coextrusion equipment of the present invention is further provided with a sub-extruder 100 for co-extrusion. 3 shows the die 30 and the sub-extruder 100 according to the present invention. The die 30 includes a main extrusion die 30a and a coextrusion die 30b. The main extrusion die 30a serves to extrude the gelled resin into the hopper 20 to form a profile to produce a profile. The coextrusion die 30b is attached to the front of the main extrusion die 30a and co-extruded a skin layer on one side of the profile passing through the main extrusion die 30a (see S in FIG. 4). To this end, the co-extrusion resin composition supplied from the sub-extruder 100 is injected into the upper side of the die for co-extrusion (30b). That is, the coextrusion resin composition discharged from the sub-extruder 100 is attached to the side surface of the profile passing through the main extrusion die 30a to form the skin layer S, and thus the coextrusion die 30b. It will pass through.

4 shows a cross section of a profile produced by coextrusion according to the invention. It can be seen that the skin layer S is integrally formed by the coextrusion on the surface of the normal window and window profile P. In the figure, the skin layer is formed on the upper surface and both sides of the profile, but the skin layer formation is not necessarily limited to this shape, it may be formed on a part or the entire surface of the upper surface of the profile, if necessary.

When the skin layer is formed by using co-extrusion, various colors can be realized by varying the material forming the skin layer, and post-processing such as attaching sheet paper after profile production by integrating the profile and other materials through extrusion. Not only is it unnecessary, the cost is reduced, the processability of the product is improved, and the use of an adhesive can be an environmentally friendly process, and the surface scratches have an advantageous effect.

 In the present invention, the resin composition for co-extrusion constituting the skin layer (S) to contain wood powder to increase the texture of the natural wood to increase the reality.

The resin composition for coextrusion comprises a first raw material forming a base color, a second raw material forming a mid tone color, and a third raw material forming a high tone color.

The first raw material of the present invention is a base raw material, characterized in that the skin layer of the profile to include the wood powder to exhibit the texture of the natural wood. When looking at the specific configuration of the first raw material, it consists of approximately 70% of PVC raw material, 10-15% of charcoal, 15-20% of wood powder, small amount of inorganic pigment having excellent weather resistance, other small amount of weathering additive, and the like.

In addition, the second raw material is a raw material of the mid-tone color, and is made of a high polymerization degree PVC, ASA, PMMA, PE, etc., which has a higher melting point than the first raw material (base raw material), and has excellent weather resistance. It comprises a small amount of additives such as pigments and other lubricants.

The third raw material is a high-tone color raw material, the high melting point than the first raw material (base raw material) made of a resin, such as high polymerization degree PVC, ASA, PMMA, PE, high tone inorganic pigments, excellent weather resistance, It contains a small amount of additives such as other lubricants.

The first raw material, the second raw material, the third raw material, and the like of the coextrusion resin composition of the present invention are not mixed with each other to form a single color, but are formed on the first raw material which is the base raw material even when the skin layer of the profile is formed. By allowing the second and third raw materials to exhibit mid tones and high tones, respectively, so that the respective colors can be distinguished from each other, a natural color with excellent reality can be exhibited.

The melting point of the first raw material is about 160 to 165 ° C, the melting point of the second raw material is about 175 to 185 ° C, and the third raw material in order to distinguish colors of the raw materials of the resin composition. The melting point of is about 175 ℃ ~ 185 ℃.

The sub-extruder 100 heats the co-extrusion resin composition and then discharges the co-extrusion die 30b by pressing the co-extrusion resin composition. If the melting points of the resin composition are all the same, the sub-extruder melts at the same time when heated in the sub-extruder. If you do so, each color is not distinguished and appears as a mixed color, so that each melting point is changed to prevent this. That is, if the inside of the sub-extruder is heated to about 160 ° C ~ 180 ° C the base material having the lowest melting point is first melted and gelled, but the second raw material and the third raw material are discharged from the sub-extruder to the co-extrusion die in a state where only part of the raw material is melted. In this process, the pattern of the second raw material of the mid tone and the third raw material of the high tone flows naturally between the base material.

In addition, the resin composition for co-extrusion may further include a functional material such as an anion powder or a fragrance to emit environmentally friendly anions into the room to implement a forest environment in the indoor environment where the window profile is installed, natural flavors such as phytoncide flavor You can also make

5 is a perspective view of the embossing roll 50 according to the present invention, Figure 6 (a) and (b) is a cross-sectional view and an enlarged view of the elbow roll 50, respectively.

The embossing roll 50 of the present invention has a diameter larger than that of the conventional embossing rolls, and the surface pattern is made of two-degree depth so that the continuity of the pattern is excellent, so that the effect of increasing the appearance reality and the three-dimensional appearance is increased. 51) is rotatably mounted, and an uneven pattern is formed on the surface. That is, referring to FIG. 6 (a), the shape of the unevenness is formed in two stages on the surface of the embossing roll 50. That is, the first protrusion 53 formed relatively large and the second protrusion 55 formed relatively small on the first protrusion 53 are provided. The first protrusions 53 and the second protrusions 55 are not in a regular shape, but in an irregular shape (cross section and surface shape of the conventional embossing roll shown in FIGS. 7A and 7B). Is only a simple pattern arranged at a certain depth, the reality is reduced), the depth (D) of the first protrusion 53 is also formed larger than the depth (d) of the protrusion formed on the conventional embossing roll, the actual feeling of the pattern Is further increased.

The embossing roll 50 of the present invention not only enlarged the protrusions formed on the surface, but also formed a large diameter RD. Increasing the diameter of the embossing roll also increases the circumference of the surface of the embossing roll, and increases the length of the embossing pattern formed on the profile as the embossing roll rotates once, thereby increasing the repeating period of the pattern formed on the profile. Because it is improved.

However, there is a limit to the diameter of the embossing roll 50 disposed between the die 30 and the calibrator 70. This is because there is a limitation as described above in the interval between the die 30 and the calibrator 70. To this end, the present invention has devised a shape as shown in Figs.

  8 is a view illustrating some components of a coextrusion facility for producing a window profile according to the present invention, which is viewed from a different direction from FIG. 2 for explanation, and an auxiliary extruder is omitted. FIG. 9 is a cross-sectional shape of the die 30 and the embossing roll 50 in FIG. 8.

8 to 9, the distance G between the die 30 and the calibrator 70 is relatively small in the lower distance G1, but the upper gap G2 is relatively large for mounting the embossing roll 50. to be. In addition, the surface of the die 30 on which the embossing roll 50 is mounted may be mounted on the surface of the die 30 to be mounted despite the large diameter of the embossing roll 50 to be mounted because the curved portion 35 is formed. Provide space. That is, the curved surface part 53 corresponding to the outer peripheral surface shape of the said embossing roll 50 is formed in the exit side surface from which the profile P is discharged | emitted from the die 30 of this invention. Therefore, even when the diameter RD of the embossing roll 50 becomes larger than the conventional one, the embossing roll 50 can be mounted without excessively increasing the distance G between the die and the calibrator. In the figure, although the semi-circular curved portion is shown, a curved portion having an appropriate shape such as an arc shape having a central angle of 90 degrees may be formed in view of the shape of the embossing roll.

Referring to FIG. 8, the calibrators 70 and 80 may be made of a dry calibrator 70 and a submerged water calibrator 80, or may be made of either a dry or submerged water type. In the cooling device 90, a plurality of disks 93 are arranged in the profile travel direction in the water tank, and the disks having a hollow in the middle are arranged side by side in order to cool the passing profile but maintain the shape.

Fig. 10 shows one of the discs 93 of the cooling device 90 according to the present invention. The disk 93 has a hollow in which a profile P passes through the inner central portion thereof, and a roller 95 is disposed on an upper side thereof. The rotation axis of the roller 95 is fixed at an appropriate position on the upper side of the disk 93, and rotates while contacting the upper surface of the profile passing through. The skin layer S by coextrusion is formed in the upper surface of the profile P, and the embossing pattern is formed by the said embossing roll 50.

Since the disk of the conventional cooling apparatus does not have the same configuration as the roller 95 of the present invention, the profile penetrates and the upper surface of the profile and the upper surface of the disk hollow make surface contact with each other. It is crushed and damaged.

In the present invention, by disposing the rotating roller at the position of the disk in contact with the upper surface of the profile, such a surface contact is changed into a line contact, thereby preventing the embossed pattern formed on the upper surface of the profile from being damaged.

As described above with reference to FIG. 3, the skin layer is coextruded on the upper side of the profile using the sub-extruder 100. In the existing profile manufacturing equipment, the auxiliary extruder, which co-extruded PVC or other raw materials, was improved to improve the auxiliary extruder flow path.

The sub-extruder 100 of the present invention supplies the co-extrusion resin composition to the upper side of the co-extrusion die 30b by applying a constant pressure to form the skin layer S on one surface of the profile P. As shown in the figure, the sub-extruder 100 transfers the co-extrusion resin composition in a substantially horizontal direction, and then the co-extrusion resin composition is bent about 90 degrees by the connector 110, and then is pushed in a vertical direction. And flows into the upper side of the die for coextrusion (30b). In the auxiliary extruder, the portion of the coextrusion resin composition which changes the feeding direction of the co-extrusion substantially vertically is the connector 110, and FIG. 11 is a cross-sectional shape of the connector 110 according to the present invention. The connector 110 has an inlet 111 through which the coextrusion resin composition is introduced in the horizontal direction and a discharge port 112 discharged in the vertical direction after the direction is changed, and curved portions 113 and 114 to change the direction. ) Is provided. As the inner diameter of the passage decreases toward the outlet 112 through the curved portion from the inlet 111, the conveying speed of the resin composition increases and the conveying pressure also increases. By the curved portions 113 and 114, the resin composition for coextrusion can be naturally changed from horizontal to vertical.

Figure 12 is a cross-sectional shape of the connector according to the prior art, where the direction of change of the conveying direction of the internal conveying material is formed so as to rapidly change from a horizontal to a vertical right angle. As a result, the conveying material proceeding in the horizontal direction hits the vertical wall directly, and there is a problem such that the conveying material is carbonized or the raw material to be conveyed is accumulated and the conveying pressure is increased. The present invention solves these problems by smoothly curving the transfer direction changing portion of the connector.

Figure 13 is a state in which the pattern is formed in the profile in the co-extrusion facility is a state of the present invention and a comparative example, Figure 14 is a state in which the profile pattern is formed in the co-extrusion facility according to the present invention.

The resin composition for coextrusion is discharged from the sub-extruder 100, flowed into the die 30 from the upper side of the die 30, and then flows into the coextrusion pressurization space 38 inside the die. Thereafter, the resin composition for coextrusion is applied to the upper surface or the upper surface and the side surface of the profile P running in the transverse direction through the die to form the skin layer S of the profile. At this time, the second raw material or the third raw material of the resin composition naturally forms a pattern.

By the way, as shown in FIG. 13, when the coextrusion pressurization space 38 inside the die 30 is a single space, the resin composition applied to the surface of the profile P in the inner compartment 38 is a central portion. There is a problem in that the intensive pressure is applied to and thus the vortex pattern S1 occurs intensively in the center of the upper surface of the profile so that the pattern of the pattern is artificially felt.

In order to solve this problem, in the present invention, the coextrusion pressurization space 38 is made of a plurality of compartments as shown in FIG. 14. To this end, the co-extrusion pressurization space 38 is provided with a flow path guide 39 for guiding the resin composition to be transferred to a separate space. The resin composition pressurized by the sub-extruder 100 and introduced into the co-extrusion pressurization space 38, which is an inner space of the die, is then guided and moved to a separate space by the flow guide 39, thereby providing a central portion. The phenomenon of concentration is prevented. Therefore, the pattern S2 formed on the skin layer S of the profile is evenly formed on the upper surface of the profile, and the natural pattern of stripe shape is evenly formed.

As shown in FIG. 14, the pattern S2 formed on the skin layer S of the profile P produced according to the coextrusion apparatus of the present invention includes the second and third raw materials of the resin composition. There is an advantage in that the naturalness of the pattern is expressed in the atypical pattern properly distributed by (39), thereby increasing the reality.

Claims (6)

The main extruder 10 that melts the water support material and pressurizes it to the die 30, the die 30 that discharges the water support material into a profile of a predetermined shape, and the calibrator so that the profile discharged from the die maintains an outer surface shape. (70), the profile manufacturing equipment for windows and doors comprising a cooling device (90) for cooling the profile passed through the calibrator,
An embossing roll 50 is formed between the die 30 and the calibrator 70 to form an embossed pattern on the profile surface.
The embossing roll has a first projection (53) formed on the surface and a second projection (55) formed on the first projection, characterized in that the window manufacturing equipment for windows. The method of claim 1,
The first projection and the second projection profile manufacturing equipment for windows and doors, characterized in that the atypical shape. The method of claim 1, wherein the die 30,
Profile manufacturing equipment for windows and doors comprising a curved portion 35 for receiving the embossing roll. The method of claim 1,
In the cooling device 90, a plurality of disks 93 having a hollow inside are arranged to support the profile, and a roller 95 for line contact with the profile is provided on the upper side of the hollow inside the disk. Profile manufacturing equipment for windows and doors. The method of claim 1,
Further comprising a sub-extruder 100 for extruding the co-extrusion resin composition containing wood powder to the die 30,
Window profile manufacturing equipment, characterized in that to form a skin layer of natural wood texture on one side of the profile. The method of claim 5, wherein
The coextrusion resin composition is a window manufacturing profile manufacturing equipment characterized in that it contains wood powder.

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