KR101757662B1 - Method for manufacturing fittings and the fittings manufactured using the same - Google Patents

Abstract

(A) moving glass fibers to be unrolled from a plurality of krill to forming guide plates; (b) the glass fibers are impregnated into the resin composition in a resin impregnation bath placed between the forming guide plates while passing through the molding guide plates, and formed of a glass fiber-resin composite material; (c) inducing the formed glass fiber-resin composite material into a mold containing one to three mandrels to be drawn and formed; And (d) the glass fiber-resin composite material discharged from the mold is cut into a predetermined length by a cutter to form a window including a hollow portion corresponding to the mandrel. do. The window making method as described above is capable of realizing dimensional stability while improving strength properties, and is capable of producing windows with a light weight.

Description

METHOD FOR MANUFACTURING FITTINGS AND THE FITTINGS MANUFACTURED USING THE SAME [0002]

TECHNICAL FIELD The present invention relates to a method for manufacturing a window including glass fiber and a resin composition, and a window manufactured using the same, and more particularly, to a window making method capable of improving the strength and dimensional stability of a window using a draw- It relates to a manufactured window.

A window is a window or door that is installed in an opening of a window or an entrance to block the inside of the building from the outside. These windows were classified as wood windows and metal windows according to the material, and recently plastic windows were also made.

In the past, wooden windows have been widely used. The wood is weak against heat, and has been suffering from corrosion due to insects and moisture.

Metal window has improved heat resistance, insect resistance and moisture resistance than wooden window. Such a metal window has a problem that it is excellent in heat transfer and is vulnerable to heat insulation and heavy. In addition, there is a problem that the dimensional stability due to temperature change is low during the winter season and the summer season, and thus it is also insufficient for insulation and airtightness.

Plastic windows are relatively inexpensive and can be manufactured freely in various shapes. However, due to the nature of the plastic, there is a problem that the heat resistance and the physical properties are poor. For this reason, plastic windows are reinforced with metal reinforcements for strength reinforcement. At this time, plastic windows have problems due to metal.

Therefore, it is difficult to solve the problem of the metal window by the plastic window and it is difficult to solve the problem of the plastic window by the metal window. A window that can solve these problems at the same time is required.

The present invention provides a method of manufacturing a window which can realize dimensional stability while improving strength properties and a window using the same.

In addition, the present invention provides a method for manufacturing a window that allows a window to have a light weight and a window using the same.

(A) moving glass fibers to be unrolled from a plurality of krill to forming guide plates; (b) the glass fibers are impregnated into the resin composition in a resin impregnation bath placed between the forming guide plates while passing through the molding guide plates, and formed of a glass fiber-resin composite material; (c) inducing the formed glass fiber-resin composite material into a mold containing one to three mandrels to be drawn and formed; And (d) the glass fiber-resin composite material discharged from the mold is cut into a predetermined length by a cutter to form a window including a hollow portion corresponding to the mandrel. do.

Further, the method for manufacturing a window includes: (e) a step of attaching a laminate film to the surface of the window, applying a paint, or applying a powder coating.

Also, a 'C' -shaped passage is formed in the metal mold to allow the glass fiber-resin composite material to pass therethrough, and the mandrel is installed at each side of the passage.

The step (c) may further include a step of drawing the composite material at a speed of 30 cm / min to 300 cm / min through the mold having a length of 50 cm to 150 cm and a temperature of 165 ° C to 210 ° C A method for manufacturing a window comprising the steps of:

The glass fiber has a fiber diameter of 10 to 30 탆 and occupies 45 to 85% by weight in the window. The resin composition contains 50 to 90% by weight of a thermosetting resin, 1 to 15% by weight of a water- To 40% by weight of a filler, and 15% to 55% by weight of the window.

Also, the thermosetting resin includes at least one selected from an unsaturated polyester resin, a vinyl ester resin, an acrylic resin, a urethane-modified acrylic resin, a phenol resin, and an epoxy resin.

Also, the water-reducing agent includes one or more of a polyvinyl acetate-based water-reducing agent, a polymethyl methacrylate-based water-reducing agent, and a polystyrene-based water-reducing agent.

Further, the filling agent includes one or two or more of aluminum hydroxide, calcium carbonate, magnesium carbonate, talc, zeolite and silica having a diameter of 30 탆 or less.

In addition, the present invention provides a method of manufacturing a molded article, comprising the steps of: (a) moving glass fibers to molding guide plates; (b) impregnating the resin composition with a glass fiber-nonwoven fabric-resin composite material in a resin impregnation tank located between the molding guide plates while passing the molding glass through the molding guide plates together with the nonwoven fabric; (c) the formed glass fiber-nonwoven fabric-resin composite material is guided to a mold including one to three mandrels to be drawn and formed; And (d) the glass fiber-nonwoven fabric-resin composite material discharged from the mold is cut by a cutter and formed into a window including a hollow portion corresponding to the mandrel. do.

In addition, in the step (b), a hole is formed in the outermost part of the forming guide plate, and the nonwoven fabric is guided to the mold through the hole.

Also, the nonwoven fabric may include at least one of a continuous filament mat, a yarn cloth, a polyester nonwoven fabric, and a glass fiber surface mat.

The present invention also provides a window comprising a main body portion having a shape in which a plurality of glass fiber frames are connected to surround a hollow portion in a transverse section, the hollow portion extending in the longitudinal direction.

In addition, the cross section of the body portion is a 'C' shape.

A method for manufacturing a window according to the present invention and a window using the same, the glass fiber is impregnated with a resin composition and reinforced with a non-woven fabric if necessary, so as to be drawn and formed.

Composite windowpanes comprising glass fibers, resin compositions and nonwoven fabrics improve strength properties such as heat resistance, tensile strength, flexural strength, flexural modulus, impact strength and the like. In particular, the glass fiber allows the window to have excellent dimensional stability according to the temperature change, thereby improving airtightness and heat insulation.

In addition, since the window bonded with the glass fiber, the resin composition and the nonwoven fabric is relatively excellent in strength, the weight of the window can be reduced overall by not using a separate steel reinforcement.

Further, a hollow portion is formed in the window due to the mandrel. This hollow part disperses the external force acting on the window, thereby improving the strength properties of the window and reducing the weight of the window.

1 is a flowchart illustrating a method of manufacturing a window according to a preferred embodiment of the present invention.
2 is a perspective view showing a window according to a preferred embodiment of the present invention.
3 is a sectional view showing a window shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a flowchart illustrating a method of manufacturing a window according to a preferred embodiment of the present invention. 1, a window making method according to a preferred embodiment of the present invention is used to manufacture a window 100 (shown in FIG. 2) including glass fiber and a resin composition.

First, a step of moving the glass fiber unwound from a plurality of krill to the forming guide plates is performed (S101). In step S101, the glass fibers are moved in a state in which they are not tangled one by one.

At this time, the glass fiber preferably has a fiber diameter of 10 mu m to 30 mu m, and the glass fiber content of the window 100 is preferably 45 wt% to 85 wt%. If the content of the glass fiber is less than 45% by weight, the strength property of the window 100 may deteriorate. In addition, if the content of the glass fiber is greater than 85% by weight, the bonding of the glass fiber with the resin composition may be deteriorated. In addition, the content of the glass fiber to the window 100 is more preferably 60% by weight to 70% by weight. Commercially available glass fibers include DR235-4400 from KCS.

In addition, the forming guide plates consist of 7 to 8 pieces and are located at the entrance of the mold.

Thereafter, a step of forming a glass fiber-resin composite material is performed in the resin impregnation tank in which the glass fiber is passed between the molding guide plates while passing through the molding guide plates (S102). Through step S102, the window 100 is made of a composite material including glass fiber and a resin composition.

At this time, the resin impregnation bath is closed except for the hole through which the introduced glass fiber passes, and contains the resin composition. In addition, the resin composition preferably contains 50 to 90% by weight of a thermosetting resin, 1 to 15% by weight of a water reducing agent and 5 to 40% by weight of a filler. The content of the resin composition in the window 100 is preferably 15 wt% to 55 wt%, and more preferably 25 wt% to 45 wt%. If the content of the resin composition is less than 15% by weight, the bonding of the glass fiber with the resin composition may be deteriorated. In addition, if the content of the resin composition is larger than 55% by weight, the strength properties of the window 100 may deteriorate.

The thermosetting resin may be an unsaturated polyester resin, a vinyl ester resin, an acrylic resin, a urethane-modified acrylic resin, a phenol resin, or an epoxy resin. In this embodiment, an iso-type unsaturated polyester is preferably used. In addition, the water-reducing festival preferably includes one or more of polyvinyl acetate-based water-reducing agent, polymethyl methacrylate-based water-reducing agent, and polystyrene-based water-reducing agent. The filler preferably includes one or more of aluminum hydroxide, calcium carbonate, magnesium carbonate, talc, zeolite and silica having a diameter of 30 mu m or less. In addition, the resin composition may optionally contain a high temperature hardening agent, a middle temperature hardening agent, a low temperature hardening agent, a releasing agent, a pigment, a surfactant, a defoaming agent and the like.

Such a resin composition should be impregnated with glass fiber quickly and sufficiently. In particular, in order to prevent the case where sufficient impregnation is not performed, a tension bar for opening the gap between the glass fibers may be separately provided in the resin impregnation tank. When the glass fiber is sufficiently impregnated into the resin composition, the window 100 can have excellent strength properties after the resin composition is cured.

On the other hand, the nonwoven fabric may pass through the molding guide plates together with the glass fiber. Wherein the nonwoven fabric comprises at least one of a continuous filament mat, a yarn cloth, a polyester nonwoven fabric, and a glass fiber surface mat.

When the glass fibers pass through the forming guide plates, they pass through holes formed separately at the outermost edges of the forming guide plates. By passing the nonwoven fabric through the separately formed hole, the nonwoven fabric is positioned on the surface of the window 100 including the glass fiber and the resin composition, and functions to reinforce the strength of the window 100 in the lateral direction.

Then, the glass fiber-resin composite material is guided to a mold and drawn and molded (S103). In step S103, the glass fiber-resin composite material is guided to the mold according to the shape of the window 100 by the molding guide plate.

The mold has a " C " -shaped passage through which the composite material passes, and a mandrel is provided at each side of the passage. As a result, the composite material impregnated in the resin composition passing through the mold has a "C" shaped cross-section, and a hollow portion 102 (shown in FIG. 2) corresponding to the mandrels is formed.

These mandrels extend from the molding guide plates to the mold, and three are installed. At this time, the mandrels are spaced horizontally or evenly from the mold. This prevents the end portion of the mandrel from being biased toward the inside of the mold, and the thickness of the window 100 can be prevented from being different.

Meanwhile, although three mandrels are provided in the mold of the present embodiment, at least one mandrel is provided with a mold, and preferably one to three mandrels are provided.

In addition, the mold has a length of 50 cm to 150 cm and maintains a temperature of 165 ° C to 210 ° C. The composite material guided by the mold is discharged through a mold by a puller and is drawn and formed. Such a puller also implements movement of the composite material in step S102. Therefore, it is preferable that the speed of drawing by the puller is 30 cm / min to 300 cm / min in consideration of uniform impregnation of the glass fiber, physical properties of the window 100, and size and shape of the window 100.

In addition, in the mold, the glass fiber-resin composite material is pressurized by the mold and receives heat inside the mold. At this time, the resin composition rapidly hardens, and the glass fiber-resin composite material impregnated in the resin composition has the shape of the window 100 and starts to be discharged from the mold.

On the other hand, when the nonwoven fabric is impregnated with the glass fiber together with the resin composition in the step S102, the nonwoven fabric is drawn and formed through the mold while being placed on the surface of the composite material.

Then, the composite material discharged from the mold is cut to a predetermined length by a cutter to form the window 100 (S104). At this time, the composite material discharged from the mold is slowly cooled in the atmosphere. In addition, the hollow portion 102 functions to disperse the external force acting on the window 100, so that the strength property of the window can be improved.

Then, a step of decorating the surface of the window 100 is performed (S105). In step S105, a laminate film is attached to the surface of the window 100, a paint is applied, or a powder coating is performed. As a result, the surface of the window 100 is protected from scratches while having a beautiful appearance.

FIG. 2 is a perspective view showing a window according to a preferred embodiment of the present invention, and FIG. 3 is a sectional view showing a window shown in FIG. 2. FIG. As shown in FIGS. 2 and 3, the window according to the preferred embodiment includes a body portion 101 and a hollow portion 102.

The main body portion 101 has a shape in which a plurality of frames 111 surrounding the hollow portion 102 are connected in a cross section. The cross section of the body portion is a " C " shape.

On the other hand, the main body 101 includes 45 to 85% by weight of glass fibers having a fiber diameter of 10 to 30 占 퐉, 15 to 55% by weight of a resin composition and a nonwoven fabric.

If the content of the glass fiber in the main body portion 101 is less than 45% by weight, the strength property of the main body portion 101 is likely to be deteriorated. If the content is more than 85% by weight, the bonding with the resin composition may be deteriorated. In addition, the content of the glass fiber to the body portion 101 is more preferably 60% by weight to 70% by weight. Commercially available glass fibers include DR235-4400 from KCS.

If the content of the resin composition for impregnation is less than 15% by weight in the main body portion 101, the bonding of the glass fiber with the resin composition may be deteriorated. In addition, if the content of the resin composition is larger than 55% by weight, the strength properties of the window 100 may deteriorate. In addition, such a resin composition preferably contains 50 to 90% by weight of a thermosetting resin, 1 to 15% by weight of a water reducing agent and 5 to 40% by weight of a filler.

The thermosetting resin is preferably an unsaturated polyester resin, a vinyl ester resin, an acrylic resin, a urethane-modified acrylic resin, a phenol resin, an epoxy resin, or the like. In this embodiment, an iso-type unsaturated polyester resin is preferable Lt; / RTI > In addition, the water-saving festival includes one or more of polyvinyl acetate-based water-based fountain, polymethyl methacrylate-based water-based fountain, and polystyrene-based water fountain. The filler preferably includes one or more of aluminum hydroxide, calcium carbonate, magnesium carbonate, talc, zeolite and silica having a diameter of 30 mu m or less. In addition, the resin composition may optionally contain a high temperature curing agent, a middle temperature curing agent, a low temperature curing agent, a releasing agent, a pigment, a surfactant, a defoaming agent and the like.

The nonwoven fabric is placed on the surface of the main body portion 101, and the nonwoven fabric includes at least one of a continuous filament mat, a yarn cloth, a polyester nonwoven fabric, and a glass fiber surface mat. Such a nonwoven fabric serves as a reinforcing material for improving the physical properties of the body portion 101 in the transverse direction.

The hollow portion 102 is formed along the longitudinal direction of the main body portion 101 and is formed by a mandrel provided in the die when the main body portion 101 is drawn and formed. In addition, the hollow portion 102 functions to disperse the external force applied to the main body 101, thereby improving the physical properties of the main body 101.

Meanwhile, a window as shown in FIG. 2 was manufactured using the window making method according to the present invention, and the physical properties of the window were measured. Herein, an iso-type unsaturated polyester resin was used as a thermosetting resin in the resin composition, DR235-4400 of KCS was used as glass fiber, and aluminum hydroxide was used as a filler.

The window was made by varying the content of glass fiber, the temperature of the mold, and the speed of drawing.

Example 1 produced a window with a glass fiber content of 65 wt% and a draw molding speed of 40 cm / min in a mold having a length of 90 cm and a temperature of 170 캜. In Example 2, the content of the glass fiber was 50% by weight, and the window was manufactured at the same mold temperature and draw-forming speed as in Example 1. [ In Example 3, the content of the glass fiber was set to 80 wt%, and the window was produced at a drawing speed of 30 cm / min in a mold having a temperature of 165 ° C due to an overload of the mold inlet due to an increase in the content of the glass fiber Respectively.

Meanwhile, in order to compare with Examples 1 to 3, a window having the same shape as that of the window shown in Fig. 2 was made of PVC material generally used for window making. This will be referred to as Comparative Example 1.

In Examples 1 to 3 as described above, in addition to Comparative Example 1, the strength properties required for the required performance of the window were measured. The results are shown in Table 1 below.

Example 1 Example 2 Example 3 Comparative Example 1 Tensile yield strength (MN / ㎡) 617.89 602.36 630.22 42.3 Flexural modulus (MN / m 2) 33,791 32,896 34,225 2,220 Charpy impact strength
(KJ / m 2) Standard temperature
(23 ° C) 236.58 227.36 242.14 23.5 Low temperature
(-10 ° C) 227.72 221.28 235.49 9.7 Heat distortion
(150 DEG C, 30 minutes) No bubbles, cracks, peeling, etc. No bubbles, cracks, peeling, etc. No bubbles, cracks, peeling, etc. No bubbles, cracks, peeling, etc. Heating stretchability (100 占 폚, 1 hour) 0.30% 0.31% 0.28% 1.43% Vica softening temperature (캜) 230 ℃ or higher 230 ℃ or higher 230 ℃ or higher 87.97 Hardness (HRR) 109.2 105.6 110.8 102.9 Elasticity by repeated heating and cooling 0.08% 0.09% 0.07%

Referring to Table 1, the windows of Embodiments 1 to 3 according to the present invention can be compared with windows of Comparative Example 1. [

Tensile yield strength, flexural modulus, Charpy impact strength, and the like were remarkably improved. In addition, since the heat stretchability is reduced by 80%, the window of the present invention can provide improved dimensional stability to heat. In addition, it can be confirmed that the variation of the Charpy impact strength at the standard temperature (23 DEG C) and the low temperature (-10 DEG C) is small, and it is possible to maintain a constant physical property with respect to the temperature change.

Thus, it can be seen that the first through third embodiments of the present invention are compared with the first comparative example, and the window according to the present invention provides significantly improved strength properties as compared with the conventional window.

While the present invention has been described in connection with certain exemplary embodiments, it will be understood by those skilled in the art that various changes may be made without departing from the scope of the present invention.

100 windows
101 body portion
102 hollow portion

Claims (18)

delete (a) moving glass fibers and nonwoven fabric to forming guide plates;
(b) when the glass fibers pass through the molding guide plates, the nonwoven fabric passes through the holes formed at the outermost edges of the molding guide plates, and the glass fibers and the nonwoven fabric are placed between the molding guide plates A nonwoven fabric-resin composite material impregnated with the resin composition in the impregnation bath to place the nonwoven fabric on the surface;
(c) the formed glass fiber-nonwoven fabric-resin composite material is guided to a mold including one to three mandrels to be drawn and formed; And
(d) a glass fiber-nonwoven fabric-resin composite material discharged from the mold is cut by a cutter and has a hollow portion corresponding to the mandrel, wherein the nonwoven fabric of the glass fiber-nonwoven fabric- Wherein the step of forming the window comprises the step of forming the window.
delete 3. The method of claim 2,
Wherein the nonwoven fabric comprises at least one of a continuous filament mat, a yarn cloth, a polyester nonwoven fabric, and a glass fiber surface mat.
The method of manufacturing a window according to claim 2,
(e) a step of attaching a laminated film to the surface of the window, applying a paint, or applying a powder coating to the surface of the window.
3. The method of claim 2,
Wherein the metal mold has a 'C' shaped passage for allowing the composite material to pass therethrough, and the mandrel is installed for each side of the passage.
3. The method of claim 2, wherein step (c)
Wherein the composite material is drawn and formed at a speed of 30 cm / min to 300 cm / min through the die having a length of 50 cm to 150 cm and a temperature of 165 ° C to 210 ° C Way.
3. The method of claim 2,
Wherein the glass fiber has a fiber diameter of 10 to 30 占 퐉 and occupies 45 to 85% by weight in the window,
Wherein the resin composition comprises 50 to 90% by weight of a thermosetting resin, 1 to 15% by weight of a water reducing agent and 5 to 40% by weight of a filler, and 15 to 55% by weight of the resin composition .
9. The method of claim 8,
Wherein the thermosetting resin comprises at least one selected from an unsaturated polyester resin, a vinyl ester resin, an acrylic resin, a urethane-modified acrylic resin, a phenol resin, and an epoxy resin.
9. The method of claim 8,
Wherein the water-reducing agent comprises one or more of a polyvinyl acetate-based water-reducing agent, a polymethyl methacrylate-based water-reducing agent, and a polystyrene-based water-reducing agent.
9. The method of claim 8,
Wherein the filler comprises one or more of aluminum hydroxide, calcium carbonate, magnesium carbonate, talc, zeolite and silica having a diameter of 30 占 퐉 or less.
delete delete And a body portion having a shape in which a plurality of frames are connected to surround the hollow portion in the transverse section,
The hollow portion extends in the longitudinal direction,
Wherein,
The nonwoven fabric is impregnated with a resin composition in a resin impregnation tank positioned between the forming guide plates while passing through a hole formed at an outermost edge of the forming guide plate, Nonwoven fabric-resin composite material formed so as to be positioned on the surface,
45 to 85% by weight of glass fibers having a fiber diameter of 10 mu m to 30 mu m; And
15 to 55% by weight of the resin composition,
Wherein 100 wt% of the resin composition comprises 50 to 90 wt% of a thermosetting resin, 1 to 15 wt% of a water reducing agent, and 5 to 40 wt% of a filler.
15. The method of claim 14,
Wherein the thermosetting resin comprises at least one selected from an unsaturated polyester resin, a vinyl ester resin, an acrylic resin, a urethane-modified acrylic resin, a phenol resin, and an epoxy resin.
15. The method of claim 14,
Wherein the water-reducing agent comprises one or more of a polyvinyl acetate-based water-reducing agent, a polymethyl methacrylate-based water-reducing agent, and a polystyrene-based water-reducing agent.
15. The method of claim 14,
Wherein the filler comprises one or more of aluminum hydroxide, calcium carbonate, magnesium carbonate, talc, zeolite and silica having a diameter of 30 占 퐉 or less.
15. The method of claim 14,
Wherein the nonwoven fabric comprises at least one of a continuous filament mat, a yarn cloth, a polyester nonwoven fabric, and a glass fiber surface mat.

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