KR102033869B1 - A synthetic resin profile product for window - Google Patents

Abstract

The present invention relates to a synthetic resin profile product used as a window and, more specifically, to a synthetic resin profile product for a window, wherein a size of a welding line of the synthetic resin profile product for a window that is manufactured by welding a synthetic resin profile is minimized. Moreover, a decorative sheet attached to a body surface of the synthetic resin profile can be kept stably after the welding.

Description

A synthetic resin profile product for window

The present invention relates to a synthetic resin profile product used as a window, more specifically, the size of the welding line of the synthetic resin profile product manufactured by welding the synthetic resin profile is minimized, the decorative sheet attached to the surface of the synthetic resin profile body after welding The present invention relates to a plastic profile product for windows and doors that can be held firmly.

In general, the windows and doors are composed of a window frame installed in the opening of the building and the window spools coupled thereto, and are divided into a casement and a sliding door according to the opening and closing method, and are divided into wooden windows, synthetic resin windows, and metal windows according to materials.

Among them, the window frame and the window sill of the synthetic resin window are formed in a rectangular frame shape by the coupling between the synthetic resin profiles P (see FIG. 1).

In this case, as an example, the synthetic resin profile product 1 may be in a state in which a decorative sheet S is attached to the surface of the synthetic resin profile body P, which is usually extruded with a PVC resin composition, and each synthetic resin profile body P After the ends are cut in a diagonal of approximately 45 °, the ends are welded with each other to form a welded portion 20 to form a window frame and / or window sill in the form of a square frame (see FIGS. 1 and 2).

At this time, the welding between the synthetic resin profile is made by a synthetic resin profile welding apparatus for the window disclosed in the prior Republic of Korea Patent Registration No. 10-1364023 (notice date: 2014.02.18.) And the like.

Specifically, the synthetic resin profile welding apparatus for windows and doors fixes the synthetic resin profile, the ends of which are cut diagonally, to the clamps, respectively.

Then, after the heating plate is put between the fixed and finished synthetic resin profile, the ends of the synthetic resin profile facing each other by the contact between the synthetic resin profile and the heating plate are melted to form respective molten sites.

Then, before the molten part is hardened, welding is performed between the synthetic resin profiles, and the burrs generated at the molten part in the pressing process are then removed using a separate device such as manual work or finishing machine.

In the conventional window and window profile product manufactured in this way, since the burr B is removed after welding, the burr B generated at the time of heat-melting the synthetic resin profile with a heating plate is interrupted during welding between the resin profile body P. As the welding surface becomes poor and the burr B protrudes out of the decorative sheet S, the welding line L still having a large width and height even after removing the burr B with a separate chisel or a finishing machine, etc. ) Is exposed to the surface of the product, there is a problem that the appearance aesthetically significantly reduced. Because the welding line (L) is the color of the synthetic resin body (for example, white) because of the white welding line exposed between the decorative sheet significantly reduced the product appearance quality.

In addition, the remaining burr B 'is formed to protrude to the surface of the decorative sheet (S), there is a problem that the adhesion state of the decorative sheet (S) and the synthetic resin profile body (P) is poor (see Fig. 2).

Republic of Korea Patent No. 10-1364023 (Notice: 2014.02.18.)

The present invention has been made to solve the above-described problems, by minimizing the size of the welding line formed on the surface of the weld in the process of welding the ends of the synthetic resin profile to each other, to enhance the beauty of the product appearance, the decorative sheet is a synthetic resin profile An object of the present invention is to provide a synthetic resin profile product for windows and doors that can effectively solve problems such as being lifted or peeled from the main body.

The technical problem to be solved by the present invention does not need to be limited to the above-mentioned technical problem, other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description. Could be.

Synthetic resin profile product for windows and doors according to the present invention for realizing the object as described above,

A synthetic resin profile product for windows and doors comprising a synthetic profile welded through a weld, wherein the synthetic profile includes a main body and a decorative sheet attached to the surface of the main body,

An end portion of at least one of the decorative sheets is inserted into the main body.

The synthetic resin profile product for windows and doors according to the present invention removes burrs in the process of melting the ends of the synthetic resin profile with a heating plate, thereby minimizing the occurrence of burrs when welding the ends of the synthetic profile after removing the heating plate, thereby decorating the sheet during the welding process. Can be rolled into the inside of the synthetic resin profile body to minimize the size of the welding line protruding from the surface of the welded portion to enhance the appearance, and can effectively prevent the decoration sheet from lifting or peeling from the synthetic resin profile body. It works.

In addition, since the effects of the present invention described above are naturally manifested by the configuration of the described contents regardless of whether the inventor recognizes them, the above-described effects are only some effects according to the contents described, and all the effects grasped or actualized by the inventors. It should not be accepted that it is listed.

In addition, the effects of the present invention should be further grasped by the entire description of the specification, even if not described in explicit sentences even those having ordinary skill in the art to which the description belongs belong Any effect that can be recognized as should be seen as an effect described herein.

1 is an elevation view of a conventional resin profile product for windows and doors.
2 is a view showing a conventional welding process.
FIG. 3 is a drawing substitute photograph taken by enlarging a cross section of a weld portion of a synthetic resin profile product for windows and doors of Comparative Example 1 with an optical microscope (OM). FIG.
FIG. 4 is a 50-fold (a), 100-fold (b), 125-fold (c), and 200-fold (d) magnification of the weld section of the synthetic resin profile product for windows and doors of Comparative Example 1 with SEM (Scanning Electron Microscope) This is a picture for one drawing.
FIG. 5 is a drawing substitute photograph taken with a 50 times (a) and a CLSM (Confocal laser scanning microscope) (b) surface of a conventional synthetic resin profile welded portion of the synthetic resin profile product for windows and doors of Comparative Example 1. FIG.
Figure 6 is a perspective view of one embodiment of a welding device (hereinafter referred to as a "seamless welding device") for producing a synthetic resin profile product for windows and doors of the present invention.
7 is a view showing a blade according to an embodiment of the seamless welding device of FIG.
8 is a cross-sectional view illustrating a vacuum suction port of the left and right clamps according to the embodiment of the seamless welding apparatus of FIG. 6.
9 is a plan view illustrating an operating state of a heating plate according to an embodiment of the seamless welding apparatus of FIG. 6.
10 is a perspective view of a heating plate according to an embodiment of the seamless welding apparatus of FIG. 6.
11 and 12 are views showing an operating state according to an embodiment of the seamless welding device of FIG.
Figure 13 is a view comparing the welding process according to the prior art (a) and the present invention (b).
14 (a) and 14 (b) are views showing a process of heating and melting end portions of a synthetic resin profile by using a heating plate according to one embodiment of the seamless welding apparatus of FIG.
FIG. 15 is a drawing substitute photograph showing a cross-sectional view of a welded section of Example 1 of a synthetic resin profile product for windows and doors of the present invention by SEM 50 times (a), 100 times (b) and 200 times (c).
FIG. 16 is a drawing substitute photograph showing the surface of the welded portion of the synthetic resin profile of Example 1 of the window profile synthetic resin profile product of the present invention photographed with 100 times (a) and CLSM (b).
FIG. 17 is a drawing substitute photograph showing a cross section of a welded part of a synthetic resin profile product for windows and windows of the present invention through OM (a) and EDS (Energy Dispersive X-Ray Spectrometer) (b, c) analysis.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the preferred embodiment of the present invention.

This is for the purpose of describing the present invention in detail so that those skilled in the art can easily practice the contents of the present invention, and thus, the technical spirit and scope of the present invention are not limited. .

In addition, in adding reference numerals to the components of each drawing, it should be noted that the same components are denoted by the same reference numerals as much as possible even if displayed on different drawings, considering the configuration and operation of the present invention Therefore, the terms specifically defined may vary according to the intention or convention of the user or operator, and the definition of these terms should be determined based on the contents throughout the present specification.

First, the synthetic resin profile product for windows and doors according to the present invention is a main frame of the window frame or window spear, and the synthetic resin profile constituting the synthetic resin profile product for windows and doors may include a main body of synthetic resin material and a decorative sheet attached to the surface of the main body. have. The decorative sheet may be composed of a single layer or a plurality of layers, for example, but may not be a form in which the print film is laminated on the base film, but is not necessarily limited thereto.

Alternatively, instead of attaching the decorative sheet to the surface of the main body, the decorative layer may be coextruded with the main body to use a synthetic resin profile in which the decorative layer is integrally formed on the main body surface.

Here, the decorative sheet or the decorative layer may be formed on any one or more surfaces of the main body surface of various forms, specifically, may be formed in a form surrounding the indoor side.

In order to connect the four windows and windows so formed in a rectangular frame, the both ends of each resin profile are cut in an oblique line of approximately 45 °, and the plurality of cut resin profiles are welded through the window and the synthetic resin profile welding device. It is made of plastic profiled products for windows and doors in the form of welded media.

Hereinafter, the characteristics of the synthetic resin profile product for windows and doors of the present invention will be described in detail.

FIG. 15 is a drawing substitute photograph taken by SEM of a welded section of a synthetic resin profile product for windows and doors according to an embodiment of the present invention, wherein the synthetic resin profile product for windows and doors according to the present invention is welded through a plurality of welds 20. Including a synthetic resin profile 10, the synthetic resin profile 10 includes a main body 310, 320 and decorative sheets 410, 420 attached to the surface of the main body 310, 320, the decoration At least one end portion of the sheets 410 and 420 is inserted into the main body 310 or 320.

Alternatively, in the synthetic resin profile product for windows and doors according to the present invention, all of the ends of the decorative sheets 410 and 420 may be inserted into the main bodies 310 and 320.

In this case, the synthetic resin profile product for windows and doors according to the present invention may be one end of the decorative sheet 410, 420 is inserted into the same depth or different depth inside the main body 310, 320, respectively.

In addition, the synthetic resin profile product for windows and doors according to the present invention, at least one end of the decorative sheets 410 and 420 has a depth of 0.01-0.5mm, 0.01-0.45mm from the upper surface of the main body 310,320. It may be inserted into the depth of or 0.01-0.4mm.

In addition, the synthetic resin profile product for windows and doors according to the present invention, the width of the welding line 500 of the welding portion 20 may be 0.25 mm or less, 0.23 mm or less or 0.20 mm or less, height may be 0.15 mm or less, 0.13 mm or less or 0.10 mm or less. have.

The welding line in the art is generated by welding, and refers to a joint of approximately line shape in which the color of the resin profile body (eg, white) is exposed between the decorative sheets.

The synthetic resin profile product for windows and doors of the present invention will be described in more detail with one embodiment of the seamless welding apparatus 100 for manufacturing the synthetic resin profile product for windows and windows of the present invention as described above.

6 is a perspective view of one embodiment of the seamless welding apparatus 100, the seamless welding apparatus 100 includes a left and right clamp 110, the heating plate 120.

First, the left and right clamps 110 are provided with upper and lower pressing pieces 111 and 112 having blades 113 formed on their respective surfaces to fix the synthetic resin profiles 10 to be welded, respectively. The actuator 110a is installed to be reciprocated in the transverse direction along the rail R by the forward and backward operations.

In this case, the upper press piece 111 is installed to reciprocate up and down by the operation of the actuator 111a, and thus pressurizes the upper surface of the synthetic resin profile 10 mounted on the upper surface of the lower press piece 112. I can fix it. At this time, the inner side surface 10a of the synthetic resin profile 10 is seated on the upper surface of the lower pressing piece 112 abuts.

In addition, the blade 113 is integrally formed on the opposite surface of the upper and lower pressing pieces 111 and 112. The blade 113 is formed to face each other at the lower end of the opposite surface of the upper pressing piece 111 and the upper end of the opposite surface of the lower pressing piece 112.

Referring to FIG. 7, the tip of the blade 113 is a vertical surface 113a and an inclined surface 113b formed to be inclined at a predetermined angle θ from the vertical surface 113a toward the burr 20a of the welding portion 20. Can be formed.

That is, it is easy to adjust the angle θ of the inclined surface 113b by the vertical surface 113a, and thus the burr 20a can be easily removed through the inclined surface 113b of the blade 113.

In this case, the angle θ of the inclined surface 113b is preferably formed at 15 to 50 ° or 20 to 45 °. When the angle θ of the inclined surface 113b is less than the above range, the tip of the blade 113 is sharpened more than necessary, so that it may be easily broken when repeatedly used. On the contrary, when the angle θ of the inclined surface 113b exceeds the range, smooth removal of the burr 20a may be difficult.

Referring to FIG. 8, the upper and lower pressure pieces 111 and 112 may be provided with a vacuum suction opening 117. The vacuum suction port 117 adsorbs the surface of the synthetic resin profile 10 seated through the vacuum suction input generated in the vacuum pump (not shown). That is, the synthetic resin profile 10 may have a case in which the surface is recessed into the hollow part side during the welding process as the hollow part is formed therein.

Therefore, when welding the synthetic resin profile 10 using the welding device 100 by welding the end of the synthetic resin profile 10 through the vacuum inlet 117, the surface of the synthetic resin profile 10 is maintained in a flat state This can be done.

In this case, in the present invention, the vacuum suction port 117 is illustrated and described as an example of the case formed in both the upper and lower pressure pieces 111 and 112, but is not limited thereto, and the bottom surface of which the area of the synthetic resin profile 10 is broadly formed. (Indoor side) may be formed to be limited to the lower pressing piece 112 is seated.

Referring to FIG. 9, the heating plate 120 may be installed or discharged through an operation of an actuator 120a between a pair of synthetic resin profiles 10 fixed by left and right clamps 110 so that the synthetic resin profile 10 may be installed. Heat-melt the ends.

The heating plate 120 may be configured of only a flat surface.

Alternatively, it may optionally have a flat surface and uneven surface as shown in FIG.

Referring to FIG. 10, the heating plate 120 includes an uneven portion 121 that forms an uneven surface 21 at an end cut surface of the opposite synthetic resin profile 10, and a flat surface 23 at at least an indoor side edge of the cut surface. A flat portion 123 is formed.

In this case, the uneven portion 121 may be formed in an intaglio (see FIGS. 10 and 14). Compared to the case where the uneven portion 121 is formed in an intaglio, the flat surface 23 may be sufficiently heated and melted to increase welding strength. That is, as the concave-convex portion 121 is formed in an intaglio, the flat portion 123 first contacts the edge of the cut surface of the synthetic resin profile 10 during heat melting using the heating plate 120.

Accordingly, the flat surface 23 is sufficiently heated and melted on the cut surface of the synthetic resin profile 10, and then the uneven surface 21 is melted to form an edge of the synthetic resin profile 10 on which the flat surface 23 is formed. It can be welded more firmly (see FIG. 11).

In this case, the concave-convex bone D of the concave-convex portion 121 smoothes the depth of the concave-convex bone (0.5 to 2.0 mm or 1.0 to 1.5 mm) of the concave-convex surface 21 to be melt-formed at the end of the synthetic resin profile 10. It may be formed to a corresponding depth (0.5 to 2.0mm or 1.0 to 1.5mm) so that it can be formed.

In addition, the concave-convex portion 121 formed on both surfaces of the heating plate 120 is formed so that the concave-convex surface 21 formed to face the cut surface of the synthetic resin profile 10 can be alternately bonded to each other.

In addition, the surface of the heating plate 120 in contact with the cut surface of the synthetic resin profile 10 may be Teflon coated. In this case, it is possible to prevent the synthetic resin, which is a material of the synthetic resin profile 10, from being pressed on the heating plate 120 when the end heating and melting of the synthetic resin profile 10 using the heating plate 120.

11 and 12, the upper and lower press pieces 111 are melted at the same time as the end surface of the synthetic resin profile 10 is melted through the flat plate or the heating plate 120 having the flat and uneven surfaces as described above. The blade 113 formed integrally on the opposite surface of 112 is removed from the burr 20a that is pushed out through the cutting surface.

After the heating plate 120 is discharged from between the pair of synthetic resin profiles 10, the left and right clamps 110 are moved toward the cut surfaces of the opposite synthetic resin profiles 10, thereby being formed at the ends of the synthetic resin profiles 10. The flat surface (not shown) or the uneven surface 21 and the flat surface 23 are bonded to each other (see FIG. 12).

In this case, the blade 113 may be elastic by the spring 114. In this case, even if the front ends of the opposite blades 113 are formed to collide with each other, the blade 113 can be absorbed by the elastic support by the spring 114, thereby preventing the blade 113 from being damaged Can be.

In addition, a stopper 115 protruding downward may be coupled to a bottom surface of the lower pressing piece 112. And the lower end of the heating plate 120 is coupled to the interval maintaining block 125 of a constant width in contact with the stopper 115, the interval between the blades 113 provided on the upper and lower pressing pieces 111, 112, respectively. This can be kept constant (see FIG. 11).

In this case, the stopper 115 may be formed to be movable and fixed in the horizontal direction. Therefore, when removing the burr 20a of the welding portion 20 using the blade 113, the gap between the blades 113 installed on the upper and lower pressing pieces 111 and 112 is adjusted by adjusting the position of the stopper 115. The heating plate 120 may be adjusted to correspond to the thickness.

In this case, the stopper 115 may move in the lateral direction by sliding along the guide rail or the guide groove (not shown), and may be fixed by a fixing member (not shown) such as a bolt.

Synthetic resin profile 10 of the embodiment of the present invention is as described above, the decorative sheet 410, 420 is attached to the surface of the main body 310, 320, in one embodiment at least in the indoor side, the seamless When the synthetic resin profile 10 is welded through the welding device 100, the synthetic resin profile product for windows and doors may have a width of the welding line 500 in the weld part 20 of 0.25 mm or less, 0.23 mm or less, or 0.20 mm or less. The lower limit of the width is not particularly limited and may be, for example, 0, and may be 0.001 mm or more, 0.005 mm or more, or 0.01 mm or more.

When the width of the welding line 500 is formed to exceed the range, the colors (eg, white) of the main body 310 and 320 are excessively exposed to the outside to reduce the beauty of the appearance, and the welding line 500 The parts can be easily contaminated by foreign substances, which may result in a deterioration of the appearance quality of the product.

When welding the synthetic resin profile 10 through the seamless welding device 100, the decorative sheet 410, 420, the height of the welding line 500 in the welding portion 20 is 0.15mm or less, 0.13mm or less or 0.10mm It may be: The lower limit of the height is not particularly limited but may be, for example, 0, and may be 0.001 mm or more, 0.005 mm or more, or 0.01 mm or more.

If the height of the welding line 500 is formed beyond the above range, the color (eg, white) of the main body 310 and 320 is excessively exposed to the outside, thereby reducing the beauty of the appearance and the welding line 500. The parts can be easily contaminated by foreign substances, which may result in a deterioration of the appearance quality of the product.

As described above, the synthetic resin profile product for windows and doors of the present invention is removed from the decorative sheets 410 and 420 attached to the surfaces of the main body 310 and 320 when welding the synthetic resin profile 10 using the seamless welding apparatus 100. And at least one end of the decorative sheets 410 and 420 may be inserted into the main body 310 and 320 so that the main body 310 and 320 have the original color. For example, white may be prevented from being exposed to the outside.

Specifically, as shown in Figure 13 (a), the conventional welding method of the synthetic resin profile for windows and doors is a burr (B) formed in the weld by welding the main body (P) of the synthetic resin profile with a decorative sheet (S) After welding is completed by using a separate finishing machine (T) to remove by scraping.

Using such a welding method may cause the appearance quality of the product to decrease as the width or height of the welding line increases.

On the other hand, in the case of the present invention, as shown in Figure 13 (b), the left and right clamp 110 in the process of melting the end of the synthetic resin profile 10 to which the decorative sheet 410, 420 is attached to the heating plate 120 As the blade 113 provided on the opposite surface of the joint 113 moves in the lateral direction and uses the seamless welding apparatus 100 of the method of removing the burr 20a formed in the welded part 20, by the burr 20a Protruding decorative sheets 410 and 420 may be prevented from being removed together.

That is, the blade 113 removes the burr 20a formed in the welded part 20, but ends the ends of the decorative sheets 410 and 420 attached to the surface of the main body 310 and 320 of the synthetic resin profile. Flattening while pushing toward 500, more specifically, the end of any one of the decorative sheet 410, 420 is inserted into the main body 310, 320 (see Fig. 15). Accordingly, the color of the main body 310 or 320 of the synthetic resin profile may not be exposed to the outside in the welding line 500 of the welding part 20, thereby improving the appearance quality of the product.

The window frame seamless welding device 100 according to the present invention having the above-described structure is disposed at four points on the main frame (not shown), so that welding of four corners of the synthetic resin profile 10 is possible at the same time.

In this case, the stage in which the window frame seamless welding device 100 is installed is installed to be slidably moved in the X and Y-axis directions along the guide rails, so that various sizes of window frames or windows can be easily manufactured.

The manufacturing process of the synthetic resin profile product for windows and doors of the present invention using the seamless welding apparatus 100 will be described in detail.

First, four synthetic resin profiles 10 are disposed in a rectangular frame shape on the upper surface of the lower pressing piece 112 of the left and right clamp 110 (see FIG. 6).

When the four synthetic resin profiles 10 are fixed by the lowering operation of the upper press piece 111, the heating plate 120 is introduced into the spaced space between the edge portions of the four synthetic resin profiles 10.

Then, the left and right clamp 110 is moved to the side of the heating plate 120 interposed therebetween by heating and melting the cut surfaces of the four synthetic resin profiles 10 through contact with the heating plate 120 (see FIG. 9).

When the flat plate is used as the heating plate 120, only the flat surface (not shown) is formed on the cut surfaces of the four synthetic resin profiles 10 facing each other, and the four synthetic resin profiles are opposite when the uneven heating plate is used as the heating plate 120. Uneven surface 21 is formed on the cut surface of (10), and optionally, the flat surface 23 may be formed at the edge of the cut surface in contact with at least the indoor side (10a).

At the same time, the blade 113 integrally provided at the left and right clamps 110 removes the burrs 20a that are melted at the ends of the four synthetic resin profiles 10 and pushed outward (see FIG. 11).

When the flat surface (not shown) or the uneven surface 21 and the flat surface 23 are formed on the cut surface of the synthetic resin profile 10, the heating plate 120 is discharged from the left and right clamp 110, and the left and right clamp 110 By moving toward the opposite surface of the cutting surface to be bonded to each other (see Fig. 12), a synthetic resin profile product for windows and doors according to the present invention is completed.

The weld section of the synthetic resin profile product for windows and doors of the present invention will be described in more detail with reference to FIGS. 15 and 16.

First, the synthetic resin profile 10 is formed below the main body 310, 320, the decorative sheet 410, 420 is attached thereon, the synthetic resin profile (adjacent to the end of the synthetic resin profile 10 ( The ends of 10 are faced to each other to form a welded part 20 while being melt-bonded through the melting process.

During the process of forming the weld 20, the main body 310, 320 and / or the decorative sheet 410, 420 undergo a melting process by a heating plate to cause a change in physical properties. The cross section of the weld 20 is OM. And the magnified view of the end of the main body 310, 320, the crystal structure collapses through the melting process, the state is settled toward the inner center, attached to the upper side of the main body 310, 320 Ends of the decorative sheets 410 and 420 that were present may also be in a state of being settled toward the ends of the main body 310 and 320 to be settled.

That is, at least one end of each of the decorative sheets 410 and 420 is settled and inserted between the two main body 310 and 320 submerged constituting the welding surface 30 through the melting process.

Here, the end of the synthetic resin profile 10, even if melted at the same time and pressure through the heating plate 120, the molten result may not always be the same, so one side to the end of the two main body 310, 320 subsided according to the situation Only the end of the decorative sheet 410 is settled and inserted, and the other end of the decorative sheet 420 may not be settled, or both ends of the decorative sheets 410 and 420 may be settled and inserted. It may be.

In addition, even if both ends of the decorative sheets 410 and 420 are settled and inserted between the ends of the main body 310 and 320, the insertion depth may be different. It may be the same.

The insertion length of at least one end of the decorative sheets 410 and 420 is 0.01-0.5 mm deep, 0.01-0.45 mm deep or 0.01-0.4 mm deep from the top surface of the main body 310, 320. Can be inserted into If the insertion length is less than the depth, the decorative sheet may be lifted or peeled from the resin profile body, and if it exceeds the above range, the desired product dimensions may not be manufactured as it is inserted more than necessary.

On the other hand, referring to Figures 3 and 4, the conventional window profile synthetic resin product of Comparative Example 1 is still a large width and height of the welding line (L) even after the burr (B) is removed, thereby decorating sheet (S) Is easily lifted or peeled from the main body (P), there is a problem that the weld line (L) part is easily contaminated by foreign matters, thereby reducing the appearance quality of the product.

As described above, the synthetic resin profile product for windows and doors of the present invention melts the burrs 20a generated during the melting process at the same time as the end of the synthetic resin profile 10 is melted by the heating plate 120, and then the heating plate 120 As the ends of the synthetic resin profile 10 are welded to each other in a state where the) is removed, additional burrs are prevented from occurring during the welding process, and thus the size of the welding line 500 made on the surface of the weld part 20 can be minimized. will be.

In addition, the ends of the main body 310, 320 and the end of the decorative sheets 410, 420 that were settled during the melting process by the heating plate 120 is not raised while forming a burr, the decorative sheets 410, 420 The end of the main body 310, 320 while maintaining the inserted state between the end of the state as it is cooled after the cooling force of the main body 310, 320 and the decorative sheet 410, 420 is doubled as the main body ( It is possible to prevent the decorative sheets 410 and 420 from being lifted or peeled from the 310 and 320.

Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely to illustrate the present invention, and various changes and modifications within the scope and spirit of the present invention are apparent to those skilled in the art. It is natural that such changes and modifications fall within the scope of the appended claims.

[ EXAMPLE  And Comparative example ]

Example

(1) Example 1

Four profiles having a decorative sheet attached to the main body surface of the PVC material were fixed to the left and right clamps provided with the upper pressing piece and the lower pressing piece of the seamless welding apparatus 100 of FIG.

Subsequently, an uneven type heating plate having a temperature of 230-250 ° C. was introduced between the end portions of each corner portion of the profile, and then the profile was contacted with the heating plate and pressed to melt for 24-29 seconds until the end portion of the profile melted. . At this time, the burr is generated and removed by the blade 113 provided on the upper and lower pressing pieces.

Then, after discharging and removing the heating plate, the ends of the profiles were brought into contact with each other through left and right clamps and welded.

Finally, the welded portion was cooled at room temperature to prepare a synthetic resin profile product for windows and doors including the profile 10 welded through the welded portion 20 of Example 1.

(2) Example 2

In the same manner as in Example 1, a synthetic resin profile product for windows and doors including the profile 10 welded through the welding part 20 of Example 2 was manufactured.

(3) Example 3

In the same manner as in Example 1, a synthetic resin profile product for windows and doors including the profile 10 welded through the welding part 20 of Example 3 was manufactured.

2. Comparative Example

(1) Comparative Example 1

Four non-seamless welding devices (Hansung Machinery, TWL Welder) were fixed with four squares with decorative sheets on the PVC body.

Subsequently, a flat heating plate at a temperature of 260 ° C. was introduced between the end portions of the corner portions of the profile, and then the profile was folded onto the heating plate and pressed to melt the end portions of the profile for 21-25 seconds.

Then, after discharging and removing the heating plate, the ends of the profiles were brought into contact with each other through left and right clamps and welded.

Finally, the welded portion was cooled at room temperature, and then a burr protruding between the cut surfaces was removed by using a finishing machine to prepare a synthetic resin profile product for windows and doors including a profile bonded through the welded portion of Comparative Example 1.

[ Experimental Example ]

1. SEM (Scanning Electron Microscope) Photo

The cross section of the welded part of the window products of Example 1-3 and the comparative example 1 was image | photographed with the magnification (magnification) and magnification by the scanning electron microscope (Zeiss, Merlin Compact).

2. Optical Microscope (OM) Photo

The cross section of the weld part of the window products of Example 1-3 and the comparative example 1 was image | photographed with the optical microscope (Huvitz, HRM-300).

3. Confocal laser scanning microscope (CLSM) photo

The cross section of the weld part of the window profile products of Example 1-3 and Comparative Example 1 was image | photographed with the confocal laser scanning microscope (Leica Microsystems, DCM 3D).

4. Width and height of welding line

The width and height of the welding line of the window products of Example 1-3 and Comparative Example 1 were analyzed using the OM photograph and the CLSM photograph.

At this time, after measuring the width and height three times for three different surface points of the welding line of each window profile product, the average value is shown in Table 1.

5. Measurement of insertion sheet insertion depth and insertion depth

The cross section of the welds of the profile products for windows and windows of Example 1 and Comparative Example 1 was confirmed whether the decorative sheet was inserted into the main body.

In addition, if the decorative sheet is inserted into the main body to calculate the depth of the inserted decorative sheet end is shown in Table 1.

At this time, the decorative sheet positioned on the left side as a decorative sheet 1 and the decorative sheet positioned on the right side as a decorative sheet 2 are shown in Table 1 based on the cross-sectional photograph.

6. Energy Dispersive X-ray Spectroscopy (EDS) mapping analysis

An energy dispersive spectrometer (Zeiss, Merlin Compact) analyzed the components of the welded part of the window profile product of Example 1.

Welding line Decorative sheet Insertion  And insertion depth Width (mm) Height (mm) Decorative sheet 1 Decorative sheet 2 Example 1 0.127 0.028 Inserted
Insertion depth: 0.225 mm Inserted
(Insertion depth: 0.388mm) Example 2 0.080 0.042 Unmeasured Unmeasured Example 3 0.040 0.038 Unmeasured Unmeasured Comparative Example 1 0.223 0.201 Not inserted
(Extruded) Not inserted
(Extruded)

As a result of analysis by OM picture and CLSM picture, the synthetic resin profile products for windows and doors of Examples 1 to 3 have small width and height of welding line, so that the whiteness of the main body cannot be visually confirmed unlike the synthetic resin profile products for windows and windows of Comparative Example 1. It was confirmed that the level is insignificant.

In addition, as a result of SEM and OM photograph analysis, the windows for synthetic resin profiles of Examples 1 to 3 are different from those of the windows for synthetic windows of Comparative Example 1 in which the decorative sheet ends protrude upward from the upper surface of the main body. It was confirmed that it was inserted inside. Accordingly, it was confirmed that the synthetic resin profile product for windows and doors of Examples 1 to 3 had an effect of not lifting or peeling the decorative sheet from the main body.

In addition, as a result of EDS mapping analysis of the welded part of Example 1, Ca inorganic element, which is a main component included in the PVC resin composition of the main body, was detected and there was a welding line on the surface. Could confirm.

10 synthetic resin profile 20 weld
20a: Bur 21: Uneven surface
23: flat surface 30: welding surface
100: seamless welding device 110: left and right clamp
111: upper press piece 112: lower press piece
113: blade 113a: vertical plane
113b: slope 114: spring
115: stopper 117: vacuum inlet
120: heating plate 121: uneven portion
123: flat part 125: space keeping block
310,320 main body
410,420: Decorative sheet 500: Welding line

Claims (7)

As a synthetic resin profile product for windows and doors comprising a synthetic resin profile (10) welded through the welding portion 20,
The synthetic resin profile 10 includes a main body 310, 320 and decorative sheets 410, 420 attached to the surface of the main body 310, 320,
The welding portion 20 is the main body 310, 320 is welded,
At least one end of the decorative sheet 410, 420 is inserted into the main body 310, 320 is a synthetic resin profile product for windows and doors. The method of claim 1,
The end of the decorative sheet 410, 420 is a synthetic resin profile product for windows and doors are all inserted into the main body 310, 320. The method of claim 2,
End portions of the decorative sheets 410, 420 are inserted into the interior of the main body 310, 320 to the same depth or different depths for windows and plastic profiles. The method according to claim 1 or 2,
At least one end of the decorative sheet 410, 420 is inserted into a depth of 0.01-0.5mm from the upper surface of the main body 310, 320 profile window products. The method of claim 4, wherein
At least one end of the decorative sheet 410, 420 is inserted into a depth of 0.01-0.4mm from the upper surface of the main body 310, 320 profile window products. The method of claim 1,
Width of the welding line 500 of the weld portion 20 is 0.001-0.25mm, the height is 0.001-0.15mm synthetic resin profile product for windows and doors. The method of claim 6,
Width of the welding line 500 of the welding portion 20 is 0.01-0.20mm, the height is 0.01-0.10mm synthetic resin profile product for windows and doors.

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