CN214997165U

CN214997165U - Synthetic resin section product for door and window

Info

Publication number: CN214997165U
Application number: CN201990001089.XU
Authority: CN
Inventors: 具滋建; 成在卿; 卢用镐; 金世真
Original assignee: LG Hausys Ltd
Current assignee: LX Hausys Ltd
Priority date: 2019-02-18
Filing date: 2019-10-24
Publication date: 2021-12-03
Anticipated expiration: 2029-10-24
Also published as: KR101992081B1; WO2020171340A1; JP7035278B2; JP2022505644A

Abstract

The utility model relates to a synthetic resin section bar product for door and window, concretely relates to make the thermal denaturation interval of weld part and the size minimizing of weld line and also enable to adhere to and close after the weldingThe synthetic resin section product for doors and windows has a firm decorative plate on the surface of the main body of the resin section. The synthetic resin profile product for doors and windows includes a synthetic resin profile (10) welded by means of a welded portion (20), the welded portion (20) having a Raman peak ratio I_Degradation/I_C‑ClA width of a section of 0.130 or more is 80 μm or less, wherein I is_DegradationThe Raman peak intensity of the PVC resin when thermally decomposed is shown in the formula I_C‑ClThe interval is the Raman peak intensity of the C-Cl bond of the PVC resin, and is that the Raman spectrum analyzer has more than two Raman peak ratios I in a unit volume of 5 Mum multiplied by 100 Mum on a Raman mapping image_Degradation/I_C‑ClA region of 0.130 or more dots.

Description

Synthetic resin section product for door and window

Technical Field

The utility model relates to a be used as door and window's synthetic resin section bar product, concretely relates to make the thermal denaturation interval of weld part and the size minimizing of weld line to also enable the decorative board that adheres to synthetic resin section bar main part surface after the welding and keep firm synthetic resin section bar product for door and window.

Background

Generally, a door or window is composed of a door or window frame installed at an opening of a building and door or window sashes coupled thereto, and is classified into a side-hung type, a push-pull type, and the like according to an opening and closing method, and a wood door or window, a synthetic resin door or window, a metal door or window, and the like according to a material.

The door frame and the door sash of the synthetic resin door/window are formed in a quadrangular frame shape by coupling the synthetic resin profiles P (see fig. 1).

In this case, as an example, the synthetic resin profile may be a synthetic resin profile product 1 for doors and windows in a four-sided frame and/or sash form (see fig. 1 and 2) formed by cutting the end of each synthetic resin profile body P into a diagonal shape of about 45 ° in a state where a decorative sheet S is further adhered to the surface of the synthetic resin profile body P extruded from a PVC resin composition, and then welding the end portions in a state where the end portions face each other to form a welded portion 20.

At this time, the welding between the synthetic resin profiles is performed by the synthetic resin profile welding apparatus for doors and windows disclosed in the prior korean patent laid-open publication No. 10-1364023 (publication date: 2014.02.18) and the like.

Specifically, the synthetic resin profile welding apparatus for doors and windows fixes the synthetic resin profiles, the ends of which are cut in the diagonal line shape, to the jigs, respectively.

Then, after the heating plates are put between the fixed synthetic resin profiles, the ends of the opposing synthetic resin profiles are heated and melted by the contact of the synthetic resin profiles with the heating plates, and the melted portions are formed.

Then, the molten portions are pressed against each other before solidification to effect welding between the synthetic resin profiles, and burrs (bur) occurring at the molten portions during such pressing are removed by subsequent manual work or by a separate device such as a finisher.

However, when the synthetic resin profiles are welded by the conventional welding apparatus for synthetic resin profiles for windows and doors, there is a problem in that a thermal denaturation zone of the welded portion is wide, and finally, the synthetic resin profile for windows and doors is discolored or cracked, resulting in a reduction in product quality.

In addition, since the conventional door and window profile product removes the burr B after welding, the burr B generated when the synthetic resin profile is heated and melted by the heating plate interferes with the welding surface when welding between the synthetic resin profile bodies P, and the burr B protrudes toward the outside of the decorative plate S, and after the burr B is removed by an additional chisel T, a finishing machine, or the like, the welding line L having a large width and height is still exposed on the surface of the product, resulting in a great reduction in the aesthetic feeling of the appearance. This is because the weld line L is in the color of the synthetic resin profile body (for example, white), and thus the white weld line exposed from between the decorative plates greatly reduces the quality of the appearance of the product.

Further, there is a problem that the remaining burrs B' are formed to protrude on the surface of the decorative sheet S, resulting in a poor adhesion state of the decorative sheet S to the synthetic resin profile body P (see fig. 2).

Therefore, there is a strong need for the development of a synthetic resin profile product for windows and doors that minimizes the thermal denaturation zone of the welded portion and the size of the weld line to solve the above problems.

Prior art documents

Patent document

(patent document 1) Korean patent No. 10-1364023 (publication date: 2014.02.18)

SUMMERY OF THE UTILITY MODEL

Technical problem

The utility model aims at solving the above problem, its aim at provides a synthetic resin section bar product for door and window, and it is through the interval minimizing of the heat variability that makes the weld part, can prevent that synthetic resin section bar product for door and window from taking place to discolour or produce the crackle and lead to the product quality to reduce.

In addition, an object of the present invention is to provide a synthetic resin profile product for doors and windows, which makes the appearance of the product beautiful by minimizing the size of a welding line formed on the surface of a welded part, and effectively solves the problem that a decorative plate is tilted or peeled off from a synthetic resin profile body.

The technical problems to be solved by the present invention are not necessarily limited to the above technical problems, and a person skilled in the art can clearly understand a plurality of other technical problems not mentioned from the following description.

Technical scheme

The synthetic resin profile product for doors and windows of the present invention for achieving the above objects comprises a synthetic resin profile welded by means of a welding part,

raman peak ratio I of the welded portion_Degradation/I_C-ClThe width of the interval of 0.130 or more may be 80 μm or less, wherein I is_DegradationThe Raman peak intensity of the PVC resin when thermally decomposed is shown in the formula I_C-ClThe interval is the Raman peak intensity of the C-Cl bond of the PVC resin, and is that the Raman spectrum analyzer has more than two Raman peak ratios I in a unit volume of 5 Mum multiplied by 100 Mum on a Raman mapping image_Degradation/I_C-ClA region of 0.130 or more dots.

Wherein the Raman peak ratio I of the welded portion is_Degradation/I_C-ClThe width of a region of 0.130 or more, which has two or more Raman peak ratios I/M in a unit volume of 5 [ mu ] m × 100 [ mu ] m on a Raman mapping image obtained by using a Raman spectrometer, may be 75 [ mu ] m or less_Degradation/I_C-ClA region of 0.130 or more dots.

Wherein the Raman peak ratio I of the welded portion is_Degradation/I_C-ClThe width of a region of 0.140 or more, which has two or more Raman peak ratios I/M in a unit volume of 5 [ mu ] m × 100 [ mu ] m on a Raman mapping image obtained by using a Raman spectrometer, may be 80 [ mu ] m or less_Degradation/I_C-ClA region of 0.140 or more dots.

In addition, the width of the welding line of the welding part of the synthetic resin section product for doors and windows can be 0.001-0.25 mm, and the height can be 0.001-0.15 mm.

Wherein, the width of the welding line of the welding part can be 0.005-0.23 mm, and the height can be 0.005-0.13 mm.

Wherein, the width of the welding line of the welding part can be 0.01-0.20 mm, and the height can be 0.01-0.10 mm.

In addition, the synthetic resin profile may include a body and a decorative plate attached to a surface of the body, an end of at least one of the decorative plates being insertable into an inside of the body.

Wherein the end portions of the decorative plates are insertable into the inside of the body.

Wherein the end portions of the decorative plates may be inserted into the interior of the body at the same depth or different depths, respectively.

Wherein, the end of at least one of the decorative plates can be inserted to a depth of 0.01-0.5 mm from the upper surface of the main body.

Wherein, the end of at least one of the decorative plates can be inserted to a depth of 0.01-0.45 mm from the upper surface of the main body.

Advantageous effects

The utility model discloses a thermal denaturation interval of the weld part of synthetic resin section bar product for door and window is little, has the effect that prevents to lead to the product quality to reduce because of door and window takes place to change colour or produce the crackle with synthetic resin section bar product.

In addition, the utility model discloses a synthetic resin section bar product for door and window is through utilizing the hot plate to carry out the in-process deburring of melting to the tip of synthetic resin section bar, and the burr that produces when furthest reduces the tip of welding synthetic resin section bar after getting rid of the hot plate to can make the decorative board be in the state of being drawn into the inside of synthetic resin section bar main part in the welding process, from this, make the size minimizing of the welding line of the surperficial salient from the welding part, and make the outward appearance beautiful, and can prevent that the decorative board from warping or peeling off from synthetic resin section bar main part.

The effects of the present invention should be further explained based on the entire description of the specification, and even if the description is not made in an explicit article, the effects should be regarded as being described in the specification by a person skilled in the art as long as the person can recognize the effects through the specification.

Drawings

FIG. 1 is a vertical view of a conventional synthetic resin profile for windows and doors.

Fig. 2 is a diagram illustrating a conventional welding process.

FIG. 3 is a photograph, taken at an OM (Optical Microscope) magnification of 100 times, of a cross section of a welded portion of the synthetic resin profile for doors and windows of comparative example 2.

FIGS. 4a to 4d are photographs of a welded part of the synthetic resin profile for windows and doors, which are taken at 50, 100, 125 and 200 times magnification, respectively, in a cross section taken by SEM (Scanning Electron Microscope).

Fig. 5a and 5b are photographs showing the surface of the welded portion of the conventional synthetic resin profile for windows and doors of comparative example 2, which were taken at 50 times by OM and by CLSM (laser scanning Confocal microscope), respectively.

Fig. 6 is a perspective view of an embodiment of a welding apparatus (hereinafter referred to as "seamless welding apparatus") for manufacturing a synthetic resin profile product for doors and windows according to the present invention.

Fig. 7 is a view showing a blade portion of an embodiment of the seamless welding apparatus in fig. 6.

Fig. 8 is a cross-sectional view showing vacuum suction ports of left and right clamps of an embodiment of the seamless welding apparatus in fig. 6.

Fig. 9 is a plan view illustrating an operation state of a heating plate of an embodiment of the seamless welding apparatus in fig. 6.

Fig. 10 is a perspective view of a heating plate of an embodiment of the seamless welding apparatus of fig. 6.

Fig. 11 and 12 are diagrams illustrating an operating state of an embodiment of the seamless welding apparatus in fig. 6.

Fig. 13a and 13b are diagrams of a prior art welding process and a welding process of the present invention, respectively.

Fig. 14a and 14b are views showing a process of joining the ends of the synthetic resin profiles after heating and melting the ends by the heating plate in the embodiment of the seamless welding apparatus in fig. 6.

Fig. 15a to 15c are photographs for replacing pictures, which were taken by SEM at 50, 100 and 200 magnifications and compared, respectively, of the cross section of the welded part of example 2 of the synthetic resin profile product for doors and windows according to the present invention.

Fig. 16a and 16b are photographs for replacing pictures, which are taken 100 times by OM and taken and shown by CLSM, respectively, of the surface of the welded portion of the synthetic resin profile of example 2 of the synthetic resin profile product for doors and windows according to the present invention.

Fig. 17a is a photograph for replacing a picture, which is 100 times shown by OM, with the cross section of the welding portion of the synthetic resin profile product for doors and windows according to the embodiment 4 of the present invention, and fig. 17b and 17c are photographs for replacing a picture, which is shown by EDS (Energy Dispersive X-Ray Spectrometer) analysis with the cross section of the welding portion of the synthetic resin profile product for doors and windows according to the embodiment 4 of the present invention, respectively.

FIG. 18 shows a Raman peak ratio I obtained by spectroscopic analysis of a welded portion cross section in comparative example 1_Degradation/I_C-ClThe raman mapping image of (a).

FIG. 19 shows a Raman peak ratio I obtained by spectroscopic analysis of a welded part cross section of example 1 of a synthetic resin profile for doors and windows according to the present invention_Degradation/I_C-ClThe raman mapping image of (a).

Reference numerals

10: synthetic resin profile 20: weld part

20 a: burr 21: concave-convex surface

23: flat surface 30: welding surface

100: the seamless welding apparatus 110: left and right side clamp

111: upper pressing piece 112: lower pressurizing sheet

113: blade part 113 a: vertical plane

113 b: inclined surface 114: spring

115: stopper 117: vacuum suction inlet

120: heating plate 121: concave-convex part

123: flat portion 125: space maintaining block

310. 320, and (3) respectively: main bodies 410, 420: decorative board

500: welding wire

Detailed Description

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

The detailed description is given to enable those skilled in the art to easily carry out the contents of the present invention, and this does not mean that the technical idea and scope of the present invention are limited thereto.

In addition, it is to be noted that, when reference numerals are given to a plurality of constituent elements in each drawing, the same constituent elements are given the same reference numerals as much as possible even when they are shown in different drawings, terms specifically defined in consideration of the configuration and action of the present invention may be different according to the intention of a user or an operator or a convention, and the definition of the terms should be judged based on the entire content of the present specification.

First, the utility model discloses a synthetic resin section bar product for door and window constitutes for the main frame of door and window frame or door and window fan the synthetic resin section bar of synthetic resin section bar product for door and window can include the main part of synthetic resin material and the decorative board that adheres to the main part surface. The decorative sheet may be formed of a single layer or a plurality of layers, and may be in a form in which a printed film is laminated on the base film, for example, but is not limited thereto.

Alternatively, a synthetic resin material in which the decorative layer is integrally formed on the surface of the body by co-extruding the body and the decorative layer may be used instead of attaching the decorative sheet to the surface of the body.

The decorative plate or the decorative layer may be formed on one or more of the body surfaces having different shapes, and may be formed to surround the indoor side surface as a specific example.

Both side ends of each synthetic resin profile are cut into oblique lines of about 45 degrees so that four door and window profiles formed in the above manner are connected in a four-sided frame form, and the ends of the cut synthetic resin profiles are welded by a door and window synthetic resin profile welding apparatus to manufacture a door and window synthetic resin profile product in a form welded by means of a welding part.

The features of the synthetic resin profile product for doors and windows of the present invention will be specifically described below.

FIG. 19 is a view of the synthetic resin profile for doors and windows according to an embodiment of the present inventionRaman peak ratio I obtained by spectroscopic analysis of cross section of welded portion of product_Degradation/I_C-ClThe raman mapping image of (a).

The utility model discloses a synthetic resin section bar product for door and window includes with the help of the synthetic resin section bar 10 of welding part 20 welded, on the raman mapping image that uses raman spectrometer (Renishaw, inVia reflex), the raman peak ratio I of welding part 20_Degradation/I_C-ClThe width of the interval of 0.130 or more may be 80 μm or less.

Wherein the raman mapping image may represent an image obtained by raman mapping using a raman spectrometer for a predetermined region on the cross section of the welded part 20 after the region is selected.

In the present invention, the raman spectrometer is described as an inVia reflex by Renishaw company as an example, but the raman spectrometer may be any of those known in the art, and is not particularly limited.

Said I_DegradationThe Raman peak intensity of the PVC resin when thermally decomposed is shown in the formula I_C-ClIs the Raman peak intensity of the C-Cl bond of the PVC resin, said I_Degradation/I_C-ClMay be 0.130 or more, 0.135 or more, or 0.140 or more. Said I_Degradation/I_C-ClThe upper limit of (b) is not particularly limited, and may be 100 or less or 90 or more, for example.

The interval means that the Raman mapping image has two or more Raman peak ratios I per unit volume (5 μm × 100 μm × 100 μm)_Degradation/I_C-ClThe width of the region is not more than 0.130. mu.m, not more than 75 μm, or not more than 72 μm. The lower limit of the width of the above-mentioned section is not particularly limited, and may be 0, for example.

Specifically, the Raman-mapped image has two or more Raman peak ratios I within a unit volume (5 μm × 100 μm × 100 μm)_Degradation/I_C-ClThe width of the region of 0.130 or more dots, i.e., the section, may be 80 μm or less, 75 μm or less, or 72 μm or less. Of the width of said intervalThe lower limit value is not particularly limited, and may be 0, for example.

Alternatively, the Raman-mapped image has two or more Raman peak ratios I per unit volume (5. mu. m.times.100 μm)_Degradation/I_C-ClThe width of the region of 0.135 or more dots, i.e., the section, may be 80 μm or less, 75 μm or less, or 72 μm or less. The lower limit of the width of the above-mentioned section is not particularly limited, and may be 0, for example.

Alternatively, the Raman-mapped image has two or more Raman peak ratios I per unit volume (5. mu. m.times.100 μm)_Degradation/I_C-ClThe width of the region of 0.140 or more dots, i.e., the section, may be 80 μm or less, 75 μm or less, or 72 μm or less. The lower limit of the width of the above-mentioned section is not particularly limited, and may be 0, for example.

It can be confirmed that the synthetic resin profile product for doors and windows of the present invention has a width of the section within the above range, thereby minimizing thermal denaturation of the synthetic resin in the welded part of the synthetic resin profile, more specifically, the synthetic resin profile body.

Generally, when the heat denaturation occurs in the welded part of the synthetic resin profile, the synthetic resin profile for doors and windows has a problem of reducing the product quality due to the occurrence of discoloration or cracks, but it can be confirmed that the synthetic resin profile for doors and windows does not undergo discoloration or cracks by minimizing the heat denaturation of the welded part, and thus the product quality is not reduced.

In addition, fig. 15a to 15c are respectively a picture-alternative photograph taken by SEM of a cross section of a welding portion of a synthetic resin profile product for doors and windows according to an embodiment of the present invention, the synthetic resin profile product for doors and windows of the present invention includes a synthetic resin profile 10 welded by a welding portion 20, a width of a welding line 500 of the welding portion 20 may be 0.25mm or less, 0.23mm or less, or 0.20mm or less, and a height may be 0.15mm or less, 0.13mm or less, or 0.10mm or less. In this case, the lower limit values of the width and the height are not particularly limited, and may be 0, for example, 0.001mm or more, 0.005mm or more, or 0.01mm or more.

In the art, the weld line is generated by welding, and represents a substantially linear weld line that exposes a color (white, for example) of the synthetic resin profile body between the decorative panels.

In this case, as described above, the synthetic resin profile 10 may be in a state where the

decorative plates

410 and 420 are attached to the surfaces of the

bodies

310 and 320, at least the indoor side surface, as a specific example, but is not limited thereto.

When the width and height of the welding line 500 are out of the above ranges, the color (e.g., white) of the

bodies

310 and 320 is excessively exposed to the outside, which deteriorates the beauty of the appearance, and the welding line 500 portion is easily contaminated by foreign substances, thereby deteriorating the quality of the appearance of the product.

In addition, the synthetic resin profile product for doors and windows of the present invention includes a plurality of synthetic resin profiles 10 welded by means of the welding part 20, and the synthetic resin profiles 10 may include

main bodies

310 and 320 and

decorative plates

410 and 420 attached to surfaces of the

main bodies

310 and 320, and may have a form in which an end of at least one of the

decorative plates

410 and 420 is inserted into the inside of the

main bodies

310 and 320.

Alternatively, in the synthetic resin profile for doors and windows of the present invention, the end portions of the

decorative plates

410 and 420 may be inserted into the

main bodies

310 and 320.

In this case, in the synthetic resin profile for doors and windows of the present invention, the end portions of the

decorative plates

410 and 420 may be inserted into the

main bodies

310 and 320 at the same depth or different depths, respectively.

Additionally, the utility model discloses an in the synthetic resin section bar product for door and window, the tip of at least one in

decorative board

410, 420 can follow the upper surface of

main part

310, 320 is gone up and is inserted to the degree of depth of 0.01 ~ 0.5mm, the degree of depth of 0.01 ~ 0.45mm or the degree of depth of 0.01 ~ 0.4 mm.

The present invention is described in more detail with reference to an embodiment of a seamless welding apparatus 100 for manufacturing the above-described synthetic resin profile product for doors and windows.

Fig. 6 is a perspective view of an embodiment of a seamless welding apparatus 100, the seamless welding apparatus 100 including left and right clamps 110 and a heating plate 120.

First, the left and right clamps 110 are provided with upper and lower

pressing plates

111 and 112 having blades 113 formed on one surface thereof, respectively, to fix the synthetic resin profiles 10 to be welded, respectively, and the left and right clamps 110 are configured to be reciprocally moved in the lateral direction along the rail R by forward and backward operations of the actuator 110 a.

At this time, the upper pressing piece 111 is provided to be movable back and forth up and down by the operation of the actuator 111a, and thus the upper surface of the synthetic resin profile 10 placed on the upper surface of the lower pressing piece 112 can be pressed and fixed. At this time, the indoor side surface 10a of the synthetic resin profile 10 can be mounted in surface contact with the upper surface of the lower pressing piece 112.

Further, blades 113 are integrally formed on the facing surfaces of the upper and lower

pressing pieces

111 and 112. The blade portions 113 are formed at the lower end of the opposed surface of the upper pressurizing sheet 111 and the upper end of the opposed surface of the lower pressurizing sheet 112 so as to be opposed to each other.

Referring to fig. 7, the front end of the blade portion 113 may be formed of a vertical surface 113a and an inclined surface 113b, wherein the inclined surface 113b is formed inclined at a predetermined angle θ from the vertical surface 113a toward the burr 20a of the welding portion 20.

That is, since the angle θ of the inclined surface 113b is easily adjusted by the vertical surface 113a, the burr 20a can be easily removed by the inclined surface 113b of the blade 113.

In this case, the angle θ of the inclined surface 113b is preferably 15 ° to 50 ° or 20 ° to 45 °. When the angle θ of the inclined surface 113b is smaller than the above range, the tip of the blade 113 is too sharp, and therefore, when repeatedly used, there is a risk that the blade is easily broken. Conversely, when the angle θ of the inclined surface 113b is larger than the above range, it may be difficult to smoothly remove the burr 20 a.

Referring to fig. 8, the upper and

lower pressurizing sheets

111 and 112 may have a vacuum inlet port 117. The vacuum suction port 117 can suck the surface of the mounted synthetic resin profile 10 by vacuum suction force generated by a vacuum pump (not shown). That is, the synthetic resin profile 10 may be depressed toward the hollow part side in the surface during welding as the hollow part is formed inside.

Therefore, when the synthetic resin profile 10 is welded by the seamless welding apparatus 100, the end of the synthetic resin profile 10 is sucked through the vacuum inlet port 117, and welding can be performed while the surface of the synthetic resin profile 10 is kept flat.

In this case, the present invention has been described by taking the vacuum inlet 117 formed in the upper and lower

pressing pieces

111 and 112 as an example, but the present invention is not limited thereto, and the vacuum inlet 117 may be formed only in the lower pressing piece 112, and the lower pressing piece 112 may be formed to attach a large-area bottom surface (indoor side surface) of the synthetic resin profile 10.

Referring to fig. 9, the heating plate 120 is provided to be able to be put in or withdrawn from between a pair of synthetic resin profiles 10 fixed by the left and right clamps 110 by the operation of the actuator 120a, and to heat and melt the end portions of the synthetic resin profiles 10.

The heating plate 120 may be constituted by only a flat surface.

Alternatively, as shown in fig. 10, a flat surface and a concave-convex surface may be selectively provided.

Referring to fig. 10, the heating plate 120 includes a concave-convex portion 121 and a flat portion 123, wherein the concave-convex portion 121 forms a concave-convex surface 21 on a cut surface of an end portion of the synthetic resin profile 10, and the flat portion 123 forms a flat surface 23 on at least an indoor side edge of the cut surface.

At this time, the concave-convex portion 121 may be formed in an intaglio manner (refer to fig. 10, 14a, and 14 b). When the concave-convex portion 121 is formed by the intaglio, the flat surface 23 can be sufficiently heated and melted to improve the welding strength as compared with the case of the anodic etching. That is, since the concave and convex portions 121 are engraved, when the heating plate 120 is used to heat and melt, the flat portion 123 first comes into surface contact with the edge of the cut surface of the synthetic resin profile 10.

Therefore, the flat surface 23 of the cut surface of the synthetic resin profile 10 is first sufficiently heated and melted, and then melted to form the uneven surface 21, so that the edge of the synthetic resin profile 10 on which the flat surface 23 is formed can be more firmly welded (see fig. 11).

In this case, the valleys D of the uneven portion 121 may have a corresponding depth (0.5 to 2.0mm or 1.0 to 1.5mm), so that the valleys of the concave and convex surfaces 21 may be formed smoothly to have a depth (0.5 to 2.0mm or 1.0 to 1.5 mm).

The concave-convex portions 121 formed on both surfaces of the heating plate 120 are formed so that concave-convex surfaces 21 formed on the cut surfaces of the synthetic resin profile 10 facing each other can be alternately joined to each other.

In addition, a teflon coating process may be performed on the surface of the heating plate 120 contacting the cut surface of the synthetic resin profile 10. At this time, it is possible to prevent the synthetic resin, which is a material of the synthetic resin profile 10, from adhering to the heating plate 120 when the end of the synthetic resin profile 10 is heated and melted by the heating plate 120.

Referring to fig. 11 and 12, the cutting surface of the end of the synthetic resin profile 10 is melted by the hot plate 120 having the flat surface or the hot plate 120 having the flat surface and the uneven surface, and the burr 20a pushed out to the outside through the cutting surface is removed by the blade part 113 integrally formed on the opposed surface of the upper and lower

pressing pieces

111 and 112.

After the heating plate 120 is withdrawn from between the pair of synthetic resin profiles 10, the left and right clamps 110 are moved toward the cutting surfaces of the synthetic resin profiles 10 facing each other, and the flat surfaces (not shown) or the

uneven surfaces

21 and 23 formed at the ends of the synthetic resin profiles 10 are joined to each other (see fig. 12).

At this time, the blade 113 may be elastically provided by a spring 114. At this time, even if the tips of the opposing blade portions 113 collide with each other, the blade portions 113 are elastically supported by the spring 114, and thus the impact can be absorbed, and therefore, the blade portions 113 can be prevented from being damaged.

In addition, the bottom surface of the lower pressurizing sheet 112 may be combined with a stopper 115 protruding toward the lower portion. A space holding block 125 having a predetermined width contacting the stopper 115 may be coupled to a lower end of the heating plate 120 to maintain a predetermined space between the blade portions 113 of the upper and lower pressing pieces 111 and 112 (see fig. 11).

At this time, the stopper 115 can be laterally moved or fixed. Therefore, when the burrs 20a of the welded portion 20 are removed by the blade portions 113, the pitch of the blade portions 113 provided in the upper and lower

pressing pieces

111 and 112 can be adjusted to correspond to the thickness of the heating plate 120 by adjusting the position of the stopper 115.

At this time, the stopper 115 can be moved laterally by sliding along a guide rail or a guide groove (not shown), and can be fixed by a fixing member (not shown) such as a bolt.

The seamless welding apparatus 100 according to the present invention having the above-described configuration can simultaneously weld four corners of the synthetic resin material 10 while being disposed at four positions on a main frame (not shown).

At this time, since the table on which the seamless welding apparatus 100 is provided is slidably provided along the rail in the direction of the X, Y axis, it is possible to easily manufacture window and door frames or windows of various sizes.

The utility model discloses a synthetic resin section bar product for door and window can prevent to adhere to

decorative board

410, 420 on the surface of

main part

310, 320 when utilizing seamless welding device 100 welding synthetic resin section bar 10 and be got rid of, and can make the tip of at least one in

decorative board

410, 420 have insert to the form of the inside of

main part

310, 320 to prevent that the original colour (as an example, white) of

main part

310, 320 from exposing in the outside.

Specifically, as shown in fig. 13a, in the conventional method for welding the synthetic resin profile for doors and windows, burrs B formed at the welded portion by welding the body P of the synthetic resin profile to which the decorative plate S is attached are removed by scraping off the same with a finishing machine T after the welding is completed.

When such a welding method is used, the width or height of the welding line L increases, resulting in a reduction in the quality of the appearance of the product.

On the contrary, as shown in fig. 13b, the present invention can prevent the

decorative plates

410 and 420 protruded by the burrs 20a from being removed together by the seamless welding apparatus 100, wherein the seamless welding apparatus 100 is configured such that the blade portions 113 positioned at the opposite surfaces of the left and right jigs 110 are moved laterally to remove the burrs 20a formed at the welding portion 20 while the end portions of the synthetic resin profile 10 to which the

decorative plates

410 and 420 are attached are melted by the heating plate 120.

That is, the blade portion 113 removes the burr 20a formed in the welded portion 20, and pushes the end portions of the

decorative plates

410 and 420 attached to the surfaces of the

bodies

310 and 320 of the synthetic resin profile toward the welding line 500 in a flat manner, and more specifically, inserts the end portion of at least one of the

decorative plates

410 and 420 into the bodies 310 and 320 (see fig. 15a to 15 c). Therefore, it is possible to prevent the color of the

bodies

310, 320 of the synthetic resin profile from being exposed to the outside on the weld line 500 of the welded part 20 to improve the appearance quality of the product.

Hereinafter, a process for manufacturing a synthetic resin profile product for doors and windows of the present invention using the seamless welding apparatus 100 shown in fig. 6 will be described in detail.

First, four synthetic resin profiles 10 are arranged in a four-sided frame configuration on the upper surface of the lower pressing piece 112 of the left and right clamps 110 (see fig. 6).

When the four synthetic resin profiles 10 are fixed by the lowering operation of the upper pressurizing sheet 111, the heating plate 120 is put into the space between the corners of the four synthetic resin profiles 10.

Then, the left and right clamps 110 are moved toward the side of the heating plate 120 interposed therebetween, and contact with the heating plate 120 heats and melts the cut surfaces of the four synthetic resin profiles 10 (see fig. 9).

Specifically, the heat melting may be performed by putting a hot plate 120 having a temperature of 220 to 250 ℃ or 230 to 250 ℃ between the end portions of the four synthetic resin profiles 10 at the respective corners, bringing the profiles 10 into surface contact with the hot plate 120, then pressing the profiles, and heating the profiles for 22 to 29 seconds or 24 to 27 seconds for the first time, and then further heating the profiles for 220 to 250 ℃ or 230 to 250 ℃ for 5 seconds or less, 3 seconds or less, or 2 seconds or less in a state where the end portions of the profiles 10 are in surface contact with the hot plate for the second time without pressing. When operating in this manner, in the first heating which is pressurized after the surface contact with the heating plate, the burrs are removed by the blade portions located at the upper and lower pressing pieces while most of the burrs are generated, so that most of the synthetic resin profile body thermally denatured by the first heating is deburred before welding, and therefore, thermal denaturation can be minimized in the synthetic resin profile product for doors and windows.

When the heating plate 120 uses a flat type heating plate, the cut surfaces of the four opposite synthetic resin profiles 10 form only flat surfaces (not shown), and when the heating plate 120 uses a concavo-convex type heating plate, the cut surfaces of the four opposite synthetic resin profiles 10 form concavo-convex surfaces 21, and at least the edge of the cut surface contacting the indoor side surface 10a may be selectively formed into a flat surface 23.

At the same time, the blades 113 integrally positioned on the left and right clamps 110 remove burrs 20a (see fig. 11) melted from the ends of the four synthetic resin profiles 10 and extruded to the outside.

When the cut surface of the synthetic resin profile 10 forms a flat surface (not shown) or a concave-convex surface 21 and a flat surface 23, the heating plate 120 is withdrawn from between the left and right clamps 110, and the left and right clamps 110 are moved toward the opposite surface of the cut surface and the cut surfaces are engaged with each other (refer to fig. 12), thereby completing the synthetic resin profile product for doors and windows having a four-sided frame shape of the present invention.

The cross-section of the welded portion in the embodiment of the synthetic resin profile product for doors and windows according to the present invention will be described in more detail with reference to the drawings, which are shown as the photographs instead of the drawings, i.e., fig. 19 and 15a to 15c, and fig. 16a and 16 b.

First, the synthetic resin profile 10 is composed of the

bodies

310 and 320 positioned at the lower side and the

decorative plates

410 and 420 attached to the upper side thereof, and the end of the synthetic resin profile 10 is opposite to the end of the adjacent synthetic resin profile 10 and is fusion-joined by a fusion process, thereby forming the welded portion 20.

Can confirm that the utility model is applied toIn the synthetic resin profile for doors and windows of type I, the Raman peak ratio I of the welded portion 20 is in a Raman-mapped image_Degradation/I_C-ClThe width of the interval of 0.130 or more may be 80 μm or less, so that the welded portion of the synthetic resin mold material, more specifically, the thermal denaturation of the synthetic resin in the synthetic resin mold material main body is minimized, and thus discoloration or cracking does not occur, and the product quality is prevented from being deteriorated (see fig. 19).

In the process of forming the welded part 20, the

main bodies

310 and 320 and/or the

decorative plates

410 and 420 undergo a physical property change during the melting process by the heating plate, and the cross section of the welded part 20 is observed by OM and SEM under magnification, so that the end parts of the

main bodies

310 and 320 collapse due to the melting process and sink toward the inner center part, and the end parts of the

decorative plates

410 and 420 attached to the upper sides of the

main bodies

310 and 320 also sink toward the end parts of the sinking main bodies 310 and 320 (see fig. 15a to 15c, fig. 16a, and fig. 16 b).

That is, at least one end of the

decorative plates

410 and 420 at both sides is in a state of being inserted between the

bodies

310 and 320 at both sides, which have been sunk, forming the welding surface 30 through the melting process, in a sunk manner.

However, even if the end portions of the synthetic resin profile 10 are melted by the heating plate 120 for the same time and pressure, the melting result may not always be the same, and thus, according to circumstances, only the end portion of one decorative plate 410 among the end portions of the both

side bodies

310, 320 that have sunk is inserted in a sinking manner while the end portion of the other decorative plate 420 is not sunk, or the end portions of both side

decorative plates

410, 420 are inserted in a sinking manner.

In addition, even if the end portions of the both side

decorative plates

410 and 420 are inserted between the end portions of the both

side bodies

310 and 320 which have been sunk, the insertion depths may be different, and in some cases, the insertion depths may be the same.

At least one end of the

decorative plate

410, 420 may be inserted to a depth of 0.01 to 0.5mm, a depth of 0.01 to 0.45mm, or a depth of 0.01 to 0.4mm from the upper surface of the

body

310, 320. When the insertion length is less than the above depth, the decorative sheet may be lifted or peeled off from the synthetic resin profile body, and when it is more than the above range, it may be too inserted to manufacture a product of a desired size.

In contrast, referring to fig. 18, it can be confirmed that the raman peak ratio I is higher in the conventional synthetic resin profile for doors and windows of comparative example 1_Degradation/I_C-ClSince the width of the interval of 0.130 or more is large, the PVC resin in the synthetic resin mold body is thermally denatured to be weak to discoloration or cracks.

In addition, referring to fig. 3 and 4a to 4d, in the conventional synthetic resin profile for windows and doors of comparative example 2, since the width and height of the weld line L are still large after the burr B is removed, the decorative sheet S is easily lifted or peeled off from the body P, and the weld line L portion is easily contaminated with foreign substances, thereby deteriorating the appearance quality of the product.

As described above, in the synthetic resin profile product for doors and windows of the present invention, the thermal denaturation zone of the welded portion is minimized, and the burr 20a generated during the melting process is immediately removed while the end of the synthetic resin profile 10 is melted by the heating plate 120, and then the ends of the synthetic resin profiles 10 are welded to each other in a state where the heating plate 120 is removed, whereby it is possible to prevent further generation of the burr during the welding process and minimize the size of the weld line 500 formed on the surface of the welded portion 20.

In addition, the end portions of the

main bodies

310 and 320 and the end portions of the

decorative plates

410 and 420, which are sunk in the melting process using the heating plate 120, are not burred and raised, but the end portions of the

decorative plates

410 and 420 are maintained in a state of being inserted between the end portions of the sunk

main bodies

310 and 320, and then the coupling force between the

main bodies

310 and 320 and the

decorative plates

410 and 420 is multiplied as they are cooled, so that the

decorative plates

410 and 420 can be prevented from being lifted up or peeled off from the

main bodies

310 and 320.

Hereinafter, preferred embodiments are proposed to help understanding the present invention, the following embodiments are merely examples of the present invention, and those skilled in the art can make various changes and modifications within the scope and technical spirit of the present invention, and these changes and modifications should fall within the scope of the appended claims.

Examples and comparative examples

1. Examples of the embodiments

(1) Example 1

Four sectional materials are fixed in a four-sided frame form to left and right clamps provided with upper and lower pressing plates of a seamless welding apparatus 100 shown in fig. 6, and a decorative plate is attached to the surface of a main body of a PVC material.

At this time, each corner of the profile is manufactured to be about 2.5mm longer than the size of the finished window in consideration of the portion to be melted later.

Next, after a concave-convex heating plate as shown in fig. 10 having a temperature of 230 to 250 ℃ was put between the end portions of the respective corners of the shape, the shape was brought into surface contact with the heating plate, and then pressurized and heated for the first time for 24 to 27 seconds until the end portions of the shape were melted for about 2.5 mm. And secondly, heating the end part of the section bar to 230-250 ℃ for 2 seconds without pressurizing in a state of surface contact with the heating plate.

At this time, the generated burrs are removed by the blade portions 113 located at the upper and lower pressing pieces.

After that, the heating plate is removed in a withdrawing manner, and then welding is performed so that the ends of the profiles are in surface contact with each other by the left and right clamps.

Finally, the welded portion was cooled at room temperature for 15 to 20 seconds to manufacture the synthetic resin profile product for windows and doors of example 1 including the profile 10 welded by means of the welded portion 20.

(2) Examples 2 to 4

Synthetic resin profile products for windows and doors including the profiles 10 welded by means of the welding portions 20 of examples 2 to 4 were manufactured in the same manner as in example 1.

2. Comparative example

(1) Comparative example 1

Four profiles are fixed on a general welding device (HanSung machine, TWL welding machine) instead of a seamless welding device in a four-frame mode, and decorative plates are attached to the surfaces of main bodies of PVC materials of the four profiles.

Next, a flat hot plate having a temperature of 260 ℃ is put between the end portions of the respective corners of the shape, and then the shape is brought into surface contact with the hot plate, followed by pressurization and first heating for 15 to 17 seconds until the end portions of the shape are melted by about 1.8 mm.

Then, the end of the profile is further heated at 260 ℃ for 6 to 8 seconds without applying pressure in a state of surface contact with the heating plate.

After that, the heating plate was removed in a withdrawing manner, and then welding was performed in such a manner that the ends of the profiles were pressed against each other by the left and right clamps to be compressed by about 0.7 mm.

Finally, after cooling the welded portion at room temperature for 15 to 20 seconds, burrs protruding from between the cut surfaces were removed by a finishing machine to manufacture the synthetic resin profile product for doors and windows including the profile welded by means of the welded portion of comparative example 1.

(2) Comparative examples 2 to 3

Synthetic resin profile products for windows and doors including profiles welded by means of a welded portion of comparative examples 2 to 3 were manufactured in the same manner as comparative example 1.

Examples of the experiments

1. SEM (scanning Electron microscope) photograph

The cross sections of the welded portions of the door and window profile products of example 2 and comparative example 2 were photographed by a scanning electron microscope (Zeiss, Merlin Compact) at different magnifications (mag).

2. OM (optical Microscope) photograph

The cross-sections of the welded portions of the door/window profile products of examples 2 to 4 and comparative examples 2 to 3 were photographed by an optical microscope (Huvitz, HRM-300).

3. CLSM (structural laser scanning microscope) photograph

The cross sections of the welded portions of the door and window profile products of examples 2 to 4 and comparative examples 2 to 3 were photographed by a laser scanning confocal microscope (Leica Microsystems, DCM 3D).

4. Spectroscopic analysis result of welded part

The welded portions of the synthetic resin profile products for windows and doors of example 1 and comparative example 1 were subjected to a cross-sectional treatment, and then raman mapping was performed to obtain raman mapping images.

The raman mapping image was obtained by measuring a spectrum of 250 × 10 points with a resolution of 5 μm × 10 μm using a raman spectrometer (Renishaw, inVia reflex) and processing the data.

Next, the Raman peak ratio I on the Raman-mapped image is measured_Degradation/I_C-ClThe width of a dot of 0.130 or more in a unit volume (5 μm (x axis) × 100 μm (y axis) × 100 μm (z axis)) is two or more intervals and is shown in table 1 (wherein, I is_DegradationThe Raman peak intensity of the PVC resin when thermally decomposed is shown in the formula I_C-ClRaman peak intensity of C — Cl bond of PVC resin).

5. Width and height of the weld line

The width and height of the weld line of the synthetic resin profile products for doors and windows of examples 2 to 4 and comparative examples 2 to 3 were analyzed using the OM photograph and the CLSM photograph.

At this time, after measuring the width and height three times at three different surface positions of the welding line of each of the synthetic resin profile products for doors and windows, the average values thereof are shown in table 2.

6. End insertion and depth measurement of decorative plate

Whether or not the decorative plate is inserted into the main body is confirmed by SEM photograph and/or OM photograph of the cross section of the welded portion of the profile products for doors and windows of examples 2 to 4 and comparative examples 2 to 3.

When the decorative plate is inserted into the main body, the depth of the end of the inserted decorative plate is calculated and is shown in table 2.

In this case, the decorative panel on the left side is referred to as decorative panel 1 and the decorative panel on the right side is referred to as decorative panel 2 based on the sectional photographs, and the sectional photographs are shown in table 2.

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

The welded portion of the door/window profile product of example 4 was analyzed for the composition by an energy spectrometer (Zeiss, Merlin Compact) (see fig. 17b and 17 c).

TABLE 1

TABLE 2

As confirmed in Table 1, the synthetic resin profile product for doors and windows of example 1 has a Raman peak ratio I_Degradation/I_C-ClThe width of the interval of 0.130 or more was smaller than that of the synthetic resin profile product for doors and windows of comparative example 1, and it was confirmed that thermal denaturation of PVC resin in the synthetic resin profile body was minimized (see fig. 18 and 19). This is considered that, in the first heating of the pressing after the surface contact with the heating plate of the present invention, the burr is removed by the blade portions located at the upper and lower pressing plates while generating most of the burr, so that most of the synthetic resin profile body thermally denatured by the first heating is removed as the burr before the welding, and on the contrary, the synthetic resin profile product for doors and windows of comparative example 1 is finally removed of the burr after the heating plate is withdrawn and the welding is performed, and therefore, the synthetic resin profile body thermally denatured by the first and second heating is not effectively removed. In addition, as confirmed in table 2, the width and height of the weld line of the synthetic resin profile for windows and doors of examples 2 to 4 were small, and the white color of the body was fine to such an extent that it could not be confirmed by naked eyes unlike the synthetic resin profile for windows and doors of comparative examples 2 to 3.

It was confirmed that the synthetic resin profile for doors and windows of examples 2 to 4 is different from the synthetic resin profile for doors and windows of comparative examples 2 to 3 in which the end portion of the decorative plate protrudes upward from the upper surface of the main body, and the end portion of the decorative plate is inserted into the interior from the upper surface of the main body. Therefore, it can be confirmed that the synthetic resin profile product for doors and windows of the present invention has an effect that the decorative sheet does not lift up or peel off from the main body (see fig. 3 and 4 and fig. 15a to 15c, 16a, and 16 b).

On the other hand, from the results of EDS mapping (mapping) analysis of the welded portion of example 4 independently of this, it was found that the main component Ca inorganic element contained in the PVC resin composition of the main body was detected, and the weld line was present on the surface, but was not visually confirmed (see fig. 17b and 17 c).

Claims

1. A synthetic resin profile product for doors and windows, comprising a synthetic resin profile (10) welded by means of a weld (20), characterized in that,

a Raman peak ratio I of the welded portion (20)_Degradation/I_C-ClThe width of the interval of 0.130 or more is 80 μm or less,

wherein, the I_DegradationThe Raman peak intensity of the PVC resin when thermally decomposed is shown in the formula I_C-ClThe interval is the Raman peak intensity of the C-Cl bond of the PVC resin, and is that the Raman spectrum analyzer has more than two Raman peak ratios I in a unit volume of 5 Mum multiplied by 100 Mum on a Raman mapping image_Degradation/I_C-ClA region of 0.130 or more dots.

2. The synthetic resin profile product for windows and doors according to claim 1,

a Raman peak ratio I of the welded portion (20)_Degradation/I_C-ClThe width of the interval of 0.130 or more is 75 μm or less,

wherein the interval is a region having two or more Raman peak ratios I per unit volume of 5 [ mu ] m × 100 [ mu ] m on a Raman mapping image obtained by using a Raman spectrometer_Degradation/I_C-ClA region of 0.130 or more dots.

3. The synthetic resin profile product for windows and doors according to claim 1,

a Raman peak ratio I of the welded portion (20)_Degradation/I_C-ClThe width of the interval of 0.140 or more is 80 μm or less,

wherein the interval is a region having two or more Raman peak ratios I per unit volume of 5 [ mu ] m × 100 [ mu ] m on a Raman mapping image obtained by using a Raman spectrometer_Degradation/I_C-ClA region of 0.140 or more dots.

4. The synthetic resin profile product for windows and doors according to claim 1,

the width of the welding line (500) of the welding part (20) is 0.001-0.25 mm, and the height is 0.001-0.15 mm.

5. The synthetic resin profile product for windows and doors according to claim 1,

the width of the welding line (500) of the welding part (20) is 0.005-0.23 mm, and the height is 0.005-0.13 mm.

6. The synthetic resin profile product for windows and doors according to claim 1,

the width of the welding line (500) of the welding part (20) is 0.01-0.20 mm, and the height is 0.01-0.10 mm.

7. The synthetic resin profile product for windows and doors according to claim 1,

the synthetic resin profile (10) includes a body (310), (320) and a decorative plate (410), (420) attached to a surface of the body (310), (320),

an end of at least one of the decorative plates (410, 420) is inserted into the main body (310, 320).

8. The synthetic resin profile product for windows and doors according to claim 7,

the end portions of the decorative plates (410, 420) are inserted into the main bodies (310, 320).

9. The synthetic resin profile product for windows and doors according to claim 8,

the end portions of the decorative plates (410, 420) are inserted into the main bodies (310, 320) at the same depth or different depths, respectively.

10. The synthetic resin profile product for windows and doors according to claim 7 or 8,

at least one end of the decorative plates (410, 420) is inserted to a depth of 0.01-0.5 mm from the upper surface of the main body (310, 320).

11. The synthetic resin profile product for windows and doors according to claim 7 or 8,

at least one end of the decorative plates (410, 420) is inserted to a depth of 0.01-0.45 mm from the upper surface of the main body (310, 320).