KR101962764B1

KR101962764B1 - Apparatus for manufacturing long fiber reinforced thermoplastic

Info

Publication number: KR101962764B1
Application number: KR1020160125069A
Authority: KR
Inventors: 고영관; 김정태; 황민혁
Original assignee: 롯데케미칼 주식회사
Priority date: 2016-09-28
Filing date: 2016-09-28
Publication date: 2019-03-27
Also published as: KR20180035064A; WO2018062878A2; WO2018062878A3

Abstract

The apparatus for producing a long fiber composite material according to an embodiment of the present invention includes a dipping tank for impregnating a resin bundle into a plurality of fiber bundles, a fiber bundle connected to a first side of the dipping tank, A resin supply unit coupled to a second side of the impregnation tank for supplying the resin to the impregnation tank, a roller unit coupled to a third side of the impregnation tank and for pressing the plurality of fiber bundles discharged from the impregnation tank, , A roller portion disposed inside the roller portion, a cooling portion for cooling the plurality of fiber bundles, and a winding portion for winding the plurality of fiber bundles discharged from the cooling portion.

Description

[0001] APPARATUS FOR MANUFACTURING LONG FIBER REINFORCED THERMOPLASTIC [0002]

The present invention relates to an apparatus for producing a long fiber composite.

In general, a method of coating individual filaments constituting the fiber bundle with a resin is used to improve the mechanical strength, corrosion resistance, or durability of a continuous fiber bundle (particularly including glass fibers).

In order to achieve the above object, a contact area between the filament and the resin is widened so that the fiber filaments of several thousands or tens of thousands of strands constituting the fiber bundle can completely contact the resin, That is, it is necessary to forcibly penetrate the resin between the pores of the fiber filament collecting body. At this time, when the resin to be used is a resin having a low viscosity, there is no great difficulty in coating the fiber filaments, but in the case of a resin having a high viscosity, it is not easy to coat individual filaments.

As a method of coating a continuous fiber bundle (fiber filament concentrator) using a widely used high-viscosity resin, a cylinder or bar type instrument is installed in a jig tank in a resin-filled impregnation tank, and a bundle of fibers A method of spreading a bundle of fibers on the surface of the cylinder or bar so that the resin can easily penetrate into the bundle of fibers when proceeding in a zigzag manner; and a method in which a plurality of donut-shaped rings are fixedly arranged in a straight line in the impregnation tank, There is a method of expanding the contact area between the resin and the filament by advancing the bundle of fibers in a state in contact with the inner side and the outer side of the mold ring to maximize unfolding.

However, there is a problem in that a high tensile force is generated when the fiber filament is continuously drawn and molded, and thus it is impossible to produce a long fiber composite material at a high speed, and that the resin is incompletely coated, There is a problem that the acidity becomes poor, which results in the formation of a large number of irregular voids in the article, resulting in a problem of significantly deteriorating mechanical and physical properties.

In addition, it takes a long time to impregnate the resin into the fiber filament and process it into a certain form, resulting in an increase in the processing time as a whole and a low production speed.

On the basis of the technical background as described above, the present invention provides an apparatus for manufacturing a composite sheet of a long fiber which can uniformly impregnate resin on the surface of a plurality of filaments constituting a fiber bundle.

The present invention also provides a manufacturing apparatus for a long fiber composite material capable of adjusting the number, width, or thickness of a plurality of fiber bundles that have passed through the impregnation tank.

The impregnation tank may have an inlet through which the plurality of fiber bundles are inserted and an outlet through which the plurality of fiber bundles are discharged.

The inlet may be a plurality of.

Each of the plurality of fiber bundles may enter each of the plurality of inlet ports.

The outlet may be plural.

The roller unit may adjust the number of the fiber bundles discharged from the impregnation tank to compress the fiber bundles.

The roller unit can adjust the width and thickness of the plurality of fiber bundles.

The roller portion may include a pair of rollers.

The fiber bundle may include at least one of glass fiber, carbon fiber, aramid fiber, PBO fiber, UHMPE fiber, ceramic fiber and natural fiber.

The resin may comprise a polypropylene resin.

The content of the fiber bundles in the fiber bundles and the resin may be 20 wt% to 80 wt%.

According to the apparatus for producing a long-fiber composite material as described above, the resin can be uniformly impregnated on the surface of a plurality of filaments constituting the fiber bundle.

Alternatively, the number, width, or thickness of the plurality of fiber bundles passing through the impregnation tank can be adjusted.

1 is a schematic view of an apparatus for producing a long fiber composite material according to an embodiment of the present invention.
2 is a perspective view schematically showing the impregnation tank of FIG.
FIGS. 3 and 4 are views showing a roller unit in which the size of the fiber bundle is adjusted by the roller unit of FIG. 1. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, since the sizes and thicknesses of the respective components shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to those shown in the drawings.

Also, throughout the specification, when an element is referred to as "including" an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise. Also, throughout the specification, the term "on " means to be located above or below a target portion, and does not necessarily mean that the target portion is located on the image side with respect to the gravitational direction.

Hereinafter, an apparatus for manufacturing a long fiber composite material according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

2 is a perspective view schematically showing the impregnation tank of FIG. 1, and FIGS. 3 and 4 are cross-sectional views of the roller unit of FIG. 1, And the size of the fiber bundle is controlled.

1, the apparatus for manufacturing a long fiber composite material according to the present embodiment includes an impregnation tank 100, a fiber bundle supply unit 300, a resin supply unit 500, a roller unit 700, a cooling unit 800, And may include a winding unit 900. The roller unit 700 and the cooling unit 800 are combined with the impregnation tank 100 to adjust the size of the plurality of fiber bundles P impregnated with the resin discharged from the impregnation tank 100 . Thus, the width and the thickness of the plurality of fiber bundles P can be controlled, and the amount of the resin impregnated into the fiber bundle P can be adjusted.

Referring to FIG. 1, the impregnation tank 100 is a impregnation die having a space formed therein, and the impregnating structure disposed in the space formed therein can uniformly impregnate the resin into the plurality of fiber bundles P . In this embodiment, one fiber bundle P of the plurality of fiber bundles P may consist of thousands or tens of thousands of filament filaments.

Here, the impregnating structure is a structure that uniformly impregnates a plurality of fiber bundles P with resin by deforming the arrangement or movement path of a plurality of fiber bundles P injected into the impregnation tank 100, Not only the resin bundle P is uniformly impregnated with the resin structure, but also the amount of the resin impregnated can be adjusted.

At this time, not only a plurality of fiber bundles P but also resin may be injected into the impregnation tank 100.

Referring to FIG. 2, an inlet (not shown) and an outlet 110 may be formed in the impregnation tank 100. A plurality of fiber bundles P supplied from the fiber bundle supply unit 300 can be introduced into the opening (not shown) through which a plurality of fiber bundles P are input.

A plurality of inlet ports (not shown) are formed so that each of the plurality of fiber bundles P can be inserted into each of a plurality of input ports (not shown). Alternatively, the charging port (not shown) may be formed in the form of an opening so that a plurality of fiber bundles P may be charged at the same time through a charging port (not shown).

A discharge port 110 through which a plurality of fiber bundles P can be discharged may be formed on the other side of the impregnation tank 100. That is, the plurality of fiber bundles P are introduced into the impregnation tank 100 through the inlet (not shown) of the impregnation tank 100, and then the resin bundles P are impregnated with the resin, Lt; / RTI >

After the plurality of fiber bundles P impregnated with the resin are discharged, the plurality of fiber bundles P can move to the roller unit 700 and the cooling unit 800. At this time, the discharge port 110 may be formed in plural as in the case of the discharge port (not shown). The number of outlets 110 may correspond to the number of outlets (not shown). That is, the number of the discharge ports 110 and the number of the discharge ports (not shown) may be the same. However, the number of the discharge ports 110 is not limited to this, and may be formed by one discharge port 110.

Referring again to FIG. 1, the fiber bundle supply unit 300 may supply the fiber bundle P to the impregnation tank 100. A plurality of fiber bundles P are wound on the outer circumferential surface of a roll so that a plurality of fiber bundles P are unwound from a roll and supplied into the impregnation tank 100 . That is, a plurality of fiber bundles P from the fiber bundle supply unit 300 can be introduced into the inlet (not shown) of the impregnation tank 100.

At this time, the fiber bundle supply unit 300 can continuously supply a plurality of fiber bundles P into the impregnation tank 100. 1, the fiber bundle supply unit 300 may be formed of a plurality of rolls. However, the present invention is not limited to this, and the fiber bundle supply unit 300 may be formed of one roll.

The plurality of fiber bundles P supplied by the fiber bundle supply unit 300 may include at least one of glass fiber, carbon fiber, aramid fiber, PBO fiber, UHMPE fiber, ceramic fiber and natural fiber.

On the other hand, the resin supply unit 500 can supply resin to the impregnation tank 100. The resin supply unit 500 can supply a resin impregnated into the plurality of fiber bundles P into the impregnation tank 100. At this time, the resin supply unit 500 can continuously supply the resin into the impregnation tank 100.

A resin having a high viscosity or a resin having a low viscosity may be stored in the resin supply part 500. For example, the resin may include a polypropylene resin, a black pigment, an antioxidant, and the like.

The roller unit 700 may be disposed on one side of the impregnation tank 100. The roller unit 700 can pass a plurality of fiber bundles P discharged from the discharge port 110 of the impregnation tank 100. That is, the plurality of fiber bundles P impregnated with the resin in the impregnation tank 100 can pass through the roller unit 700.

3 and 4, the roller unit 700 can press a plurality of fiber bundles P together. According to this embodiment, the roller unit 700 can adjust the number of the fiber bundles P to be pressed. The roller unit 700 can press a predetermined number of the fiber bundles P to each other. When the fiber bundle P is fed into the roller unit 700, the number of the fiber bundles P to be fed can be controlled.

On the other hand, the roller unit 700 can adjust the width or the thickness of the plurality of fiber bundles P to be pressed. The roller unit 700 can adjust the width or thickness of the inserted fiber bundle P while adjusting the number of the fiber bundles P.

In this embodiment, the roller portion 700 may include a pair of rollers. The widths or thicknesses of the plurality of fiber bundles P passing through the roller unit 700 can be adjusted by adjusting the intervals of the rollers facing each other.

Meanwhile, the roller unit 700 can control the composition ratio of the resin and the fiber bundle P. Specifically, the mixing ratio of the resin and the fiber bundle can be controlled, and the content of the fiber bundle can be adjusted to 20 wt% to 80 wt%.

Referring to FIGS. 3 and 4, the widths of the plurality of fiber bundles P fed into the roller unit 700 may be different from each other. For example, in FIG. 3 and FIG. 4, ten fiber bundles P can pass through the roller portion 700 with the same width. 3, a plurality of fiber bundles P having passed through the roller unit 700 have a first width I, and in FIG. 4, a plurality of fiber bundles P having passed through the roller unit 700, 2 < / RTI > width (II). At this time, the first width I may be larger than the second width II. In this manner, the roller unit 700 can adjust the width of the plurality of fiber bundles P.

Referring again to FIG. 1, a plurality of fiber bundles P having passed through the impregnation tank 100 may be cooled in the cooling unit 800. That is, the plurality of fiber bundles P impregnated with the resin can be cooled inside the cooling portion 800.

In this embodiment, the roller unit 700 may be disposed inside the cooling unit 800. Therefore, the plurality of fiber bundles P having passed through the impregnation tank 100 can be compressed by the roller unit 700 while being cooled. Since a plurality of fiber bundles P having passed through the impregnation tank 100 are in a state of being impregnated with a resin at a high temperature, it may be difficult to squeeze the plurality of fiber bundles P to a specific width or thickness. Therefore, when the plurality of fiber bundles P having passed through the impregnation tank 100 are cooled to some extent, it is easy to press the plurality of fiber bundles P to a specific width or thickness.

On the other hand, a plurality of fiber bundles P having passed through the roller portion 700 and the cooling portion 800 can be wound around the winding portion 900. The winding unit 900 can wind a plurality of fiber bundles P that have been compressed in a predetermined width or thickness through the roller unit 700.

The winding unit 900 may include a roll, and a plurality of fiber bundles P may be wound around the outer circumferential surface of the roll.

That is, in this embodiment, a plurality of fiber bundles P supplied from the fiber bundle supplying unit 300 pass through the impregnation tank 100 impregnated with the resin, and the roller unit 700 and the cooling unit The plurality of fiber bundles P discharged from the discharge port 110 of the impregnation tank 100 may be cooled and compressed to a predetermined size.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Various modifications and variations are possible within the scope of the appended claims.

100 impregnation tank
110 outlet
300 fiber bundle supply part
500 resin supply unit
700 roller portion
800 cooling section
900 winding assembly

Claims

A dipping tank for impregnating a plurality of fiber bundles into a resin;
A fiber bundle supply unit coupled to a first side of the impregnation tank and supplying the plurality of fiber bundles to the impregnation tank;
A resin supply unit coupled to a second side of the impregnation tank and supplying the resin to the impregnation tank;
A roller unit coupled to a third side of the impregnation tank and pressing the plurality of fiber bundles discharged from the impregnation tank;
A cooling unit disposed inside the roller unit and cooling the plurality of fiber bundles; And
And a winding portion for winding the plurality of fiber bundles discharged from the cooling portion,
The roller unit adjusts the number, width, and thickness of the plurality of fiber bundles discharged from the impregnation tank and presses them,
Wherein inside the cooling section, the plurality of fiber bundles are cooled by the cooling section and pressed by the roller section.

The method according to claim 1,
Wherein the impregnation tank has a charging port for receiving the plurality of fiber bundles and an outlet for discharging the plurality of fiber bundles.

3. The method of claim 2,
Wherein the inlet is formed of a plurality of entrances.

The method of claim 3,
And each of the plurality of fiber bundles enters each of the plurality of inlet ports.

3. The method of claim 2,
And the outlet is a plurality of.

delete

The method according to claim 1,
Wherein the roller portion includes a pair of rollers.

The method according to claim 1,
Wherein the fiber bundle comprises at least one of glass fiber, carbon fiber, aramid fiber, PBO fiber, UHMPE fiber, ceramic fiber and natural fiber.

The method according to claim 1,
Wherein the resin comprises a polypropylene resin.

The method according to claim 1,
Wherein the content of the fiber bundle in the fiber bundle and the resin is 20 wt% to 80 wt%.