KR20210158053A - Apparatus and method of manufacturing continuous fiber reinforced thermoplastic composite using double impregnation mold - Google Patents

Abstract

Embodiments of the present invention relate to a continuous fiber-reinforced thermoplastic composite manufacturing apparatus and manufacturing method using a double impregnation mold. The apparatus for manufacturing the continuous fiber reinforced thermoplastic composite material using the double impregnation mold according to an embodiment of the present invention includes: a textile supply unit; a spreading unit including a first spreader that spreads the first fiber in the width direction, and a second spreader that spreads the second fiber in the width direction at a position different from that of the first spreader; a double impregnation mold part including a first impregnating mold for impregnating the resin in the first fiber that has passed through the first spreader, and a second impregnation mold which is parallel to the first impregnation mold up and down and impregnates the resin in the second fiber that has passed through the second spreader; and a shared extruder for supplying resin to each of the first and second impregnating molds. According to the present invention, high-speed production of a continuous fiber-reinforced thermoplastic composite material (i.e., UD sheet) is possible using a single manufacturing line, thereby improving productivity. In addition, it is possible to manufacture a continuous fiber-reinforced thermoplastic composite (i.e., UD sheet) made of different types of fibers.

Description

Continuous fiber-reinforced thermoplastic composite manufacturing apparatus and manufacturing method using a double impregnation mold

Embodiments of the present invention relate to an apparatus and method for manufacturing a continuous fiber reinforced thermoplastic composite material using a double impregnation mold.

Continuous fiber-reinforced composites have recently been spotlighted as industrial materials in relation to automobiles, aviation, electronics, construction, sports leisure and defense industries, and have the advantage of being able to change their composition relatively freely in the forming process.

The continuous fiber-reinforced thermoplastic composite material is continuously produced by impregnating a continuously supplied fiber with a thermoplastic resin, and then curing or solidifying the fiber.

In particular, the fiber-reinforced one-way prepreg (Pre-Preg) is continuously manufactured by impregnating the fibers in one direction in a thermoplastic resin. And the fiber-reinforced unidirectional prepreg manufactured in this way is called a UD sheet (Unidirectional Sheet).

UD sheet has excellent mechanical properties and is mainly used as a reinforcing material in parts with low properties of injection-molded products.

A conventional UD sheet manufacturing apparatus includes a fiber supply unit having a bobbin for supplying fibers, a spreader for spreading fibers, an extruder for supplying resin, and an impregnation mold for impregnating the fibers with resin. However, according to the conventional UD sheet manufacturing apparatus, it is difficult to design a high-speed UD sheet manufacturing line.

Therefore, it may be possible to simultaneously manufacture a UD sheet composed of two types of fibers in a single UD sheet manufacturing line, or when one type of fiber is applied, the UD sheet manufacturing apparatus can double the productivity of the UD sheet manufacturing line. design is requested. And for this, an optimization design and improvement plan of the impregnated passage section are required to prevent damage to fibers at high speed.

As a prior document related to the present invention, there is Republic of Korea Patent Publication No. 10-2016-0054661 (published on May 17, 2016), and the prior document discloses an apparatus and method for manufacturing a unidirectional continuous fiber-reinforced thermoplastic composite material. However, the unidirectional continuous fiber-reinforced thermoplastic composite material manufacturing apparatus and method disclosed in the prior literature improve the productivity of the UD sheet, and high-speed impregnation that can improve production efficiency at least twice or more in the same space is not presented at all.

Republic of Korea Patent Publication No. 10-2016-0054661 (published on May 17, 2016)

An object of the present invention is to provide a continuous fiber-reinforced thermoplastic composite manufacturing apparatus capable of significantly improving the productivity of a fiber-reinforced unidirectional prepreg, that is, a UD sheet through a single manufacturing line.

Another object of the present invention is to provide a continuous fiber-reinforced thermoplastic composite material manufacturing apparatus capable of simultaneously manufacturing a fiber-reinforced unidirectional prepreg made of different types of fibers, that is, a UD sheet through a single manufacturing line.

Another object of the present invention is to provide a method for manufacturing a continuous fiber-reinforced thermoplastic composite that can improve the productivity of the UD sheet more than twice or simultaneously produce a UD sheet composed of different types of fibers through a single manufacturing line. .

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

According to an aspect of the present invention, there is provided a continuous fiber-reinforced thermoplastic composite manufacturing apparatus capable of significantly improving the productivity of a fiber-reinforced unidirectional prepreg, that is, a UD sheet through a single manufacturing line.

Continuous fiber-reinforced thermoplastic composite material manufacturing apparatus using a double mold according to an embodiment of the present invention, a fiber supply unit for supplying a plurality of fibers; A first spreader that spreads a first fiber, which is one of the plurality of fibers, in a width direction, and a second spreader that spreads a second fiber, which is another one of the plurality of fibers, in a width direction at a position different from that of the first spreader. spreading unit; A first impregnation mold for impregnating the resin into the first fiber that has passed through the first spreader, and a first impregnating mold for impregnating the resin with the second fiber passing through the second spreader in parallel with the first impregnating mold 2 a double impregnation mold portion including an impregnation mold; and a shared extruder for supplying a resin to each of the first and second impregnated molds.

The first fiber and the second fiber may be the same or different types of fibers.

The first spreader may be positioned at the same height as the first impregnating mold. The second spreader may be vertically parallel to the first spreader and positioned at the same height as the second impregnation mold.

The outlet side of the first spreader may be formed to face the inlet side of the first impregnation mold at a front and rear interval.

The outlet side of the second spreader may be formed to face the inlet side of the second impregnation mold at a front and rear interval.

The co-extruder, a first resin supply line for supplying the resin to the first impregnated mold; and a second resin supply line for supplying the resin to the second impregnated mold.

In this case, each of the first and second resin supply lines may have an independent resin supply path, and may be formed in the form of a flexible tube separated from each other.

In addition, the co-extruder, the first resin supply nozzle connected to the end of the first resin supply line, the first resin supply nozzle having a first resin discharging unit to inject the resin into the first flow path of the first impregnated mold; and a second resin supply nozzle connected to the end of the second resin supply line and having a second resin discharge part to inject the resin into the second flow passage part of the second impregnation mold.

The first resin discharging unit may be configured to discharge the resin from top to bottom toward the inlet of the first flow path unit. For example, the first resin discharging unit may be configured to discharge the resin from top to bottom toward the inside of the first flow path in a direction crossing the longitudinal direction of the first flow path in an upper discharging manner.

The second resin discharging unit may be configured to discharge the resin from bottom to top toward the inlet of the second flow path unit. For example, the second resin discharging unit may be configured to discharge the resin from the bottom to the top toward the inside of the second flow path unit in a direction crossing the longitudinal direction of the second flow path unit in a lower discharging manner. That is, the second resin discharging unit may be formed at the same position as the first resin discharging unit, and may have a symmetrical shape such that the resin discharging directions are opposite to each other.

The first flow passage includes: a first wave-type main passage for impregnating the first fiber with a resin; and a first damage prevention flow path positioned in front of the first wave-type main flow path and configured to prevent damage to an unimpregnated portion of the first fiber when the first fiber is initially introduced.

A plurality of first microprotrusions protruding downward at a distance from each other and in contact with the upper portion of the first fiber may be provided at an upper end of the first damage prevention passage. A first wave protrusion protruding upwardly between the plurality of first microprotrusions and contacting a lower portion of the first fiber may be provided at a lower end of the first damage prevention passage.

The second flow passage includes: a second wave-type main passage for impregnating the second fiber with a resin; and a second damage prevention flow path located in front of the second wave-type main flow path and preventing damage to an unimpregnated portion of the second fiber when the second fiber is initially introduced.

A plurality of second microprotrusions may be provided at the lower end of the second damage prevention passage, which protrude upward at a distance from each other and come into contact with the lower portion of the second fiber.

A second wave protrusion protruding downward between the plurality of second fine protrusions and contacting an upper portion of the second fibers may be provided at an upper end of the second damage prevention passage.

Each of the first impregnation mold and the second impregnation mold may be a coat hanger die.

The fiber supply unit may include: a first bobbin for supplying the first fiber; and a second bobbin for supplying a second fiber identical to or different from that of the first fiber.

It further includes; a fiber transport unit for guiding the plurality of fibers supplied from the fiber supply unit to different paths to transfer to the spreading unit.

The fiber transfer unit may include: a first guide bar for transferring the first fiber supplied from the first bobbin to the inlet side of the first spreader; and a second guide bar for transferring the second fiber supplied from the second bobbin to the mouth side of the second spreader.

The fiber supply unit may include: a first guide roll for guiding the first fiber supplied from the first bobbin toward the first guide bar; and a second guide roll for guiding the second fiber supplied from the second bobbin toward the second guide bar.

A first cooling roll for cooling the material impregnated with the resin in the first fiber in the first impregnation mold, and a second cooling roll for cooling the material impregnated with the resin in the second fiber in the second impregnation mold It further includes a cooling roll unit.

It further includes; a winding roll unit including a first winding roll for winding the material passing through the first cooling roll, and a second winding roll for winding the material passing through the second cooling roll.

According to another aspect of the present invention, there is provided a method for manufacturing a continuous fiber-reinforced thermoplastic composite material capable of improving the productivity of the UD sheet more than twice or simultaneously manufacturing the UD sheet composed of different types of fibers through a single manufacturing line.

A continuous fiber-reinforced thermoplastic composite manufacturing method using a double impregnation mold according to an embodiment of the present invention comprises: (a) a fiber supply step of supplying a plurality of fibers; (b) a spreading step of spreading a first fiber, which is one of the plurality of fibers, in the width direction, and at the same time, spreading a second fiber, which is another one of the plurality of fibers, at a position different from that of the first fiber; and (c) inserting the first and second fibers spread in the width direction into the first and second impregnating molds separated vertically, and impregnating the first and second fibers with resin inside the first and second impregnation molds, respectively. impregnation step; and, in step (c), the resin may be supplied to each of the first and second impregnation molds using a single co-extruder.

After the step (c), (d) a cooling step of cooling the materials impregnated with the resin in each of the first and second fibers by passing through each of the first and second impregnating molds; and (e) a winding step of winding the cooled materials.

According to the present invention, it is possible to significantly improve the productivity of the fiber-reinforced one-way prepreg, that is, the UD sheet through a single manufacturing line.

In addition, according to the present invention, it is possible to simultaneously manufacture a fiber-reinforced unidirectional prepreg made of heterogeneous fibers, that is, a UD sheet.

Specifically, according to the present invention, a shared extruder for supplying a resin to a plurality of impregnating molds and a plurality of impregnating molds divided vertically and having separate flow paths from each other are used. Accordingly, productivity can be improved by about 2 times compared to the existing one, and there is an advantage in that a UD sheet made of different types of fibers can be manufactured at the same time.

In particular, the extruder has a large size within the UD sheet manufacturing line. By using a single extruder in common, the production efficiency of the UD sheet can be increased by about 2 times by utilizing the same space as the existing one, and the production efficiency can be greatly improved. have.

In addition, according to the present invention, a plurality of impregnation molds are arranged vertically, and since they are symmetrical to each other, uniform impregnation properties can be expressed in the upper and lower sections.

In addition, according to the present invention, it is possible to improve the flow path structure of each of the plurality of impregnation molds to prevent damage to the unimpregnated fibers that may occur in the initial stage in the high-speed impregnation process. For example, by forming fine protrusions in the straight section on the inlet side among the flow paths of each of the plurality of impregnated molds, damage to the non-impregnated fibers can be prevented in advance through the flow path structure design.

In addition, according to the present invention, uniform application of the resin in the width direction can be expected by adopting a coat hanger type resin application method.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is an overall configuration diagram of an apparatus for manufacturing a continuous fiber reinforced thermoplastic composite material using a double impregnation mold according to an embodiment of the present invention.
2 is a conceptual diagram schematically illustrating a shared extruder and a double impregnation mold in the continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold according to an embodiment of the present invention.
3 is a conceptual diagram showing a first embodiment of the double impregnation mold part in the continuous fiber-reinforced thermoplastic composite material manufacturing apparatus using the double impregnation mold according to the embodiment of the present invention.
4 is a conceptual diagram showing a second embodiment of the double impregnation mold part in the continuous fiber-reinforced thermoplastic composite material manufacturing apparatus using the double impregnation mold according to the embodiment of the present invention.
FIG. 5 is a conceptual view showing an enlarged shape of a first damage prevention flow path in the double impregnation mold part shown in FIG. 4 .
FIG. 6 is a conceptual diagram illustrating an enlarged shape of a second damage prevention flow path in the double impregnation mold part shown in FIG. 4 .
FIG. 7 is a conceptual diagram illustrating symmetrical shapes of first and second damage prevention flow paths in the double impregnation mold part shown in FIG. 4 .
8A, 8B, and 8C are diagrams schematically illustrating comparative examples in which upper discharge, lower discharge, and upper and lower discharge methods are applied to an impregnation mold having a single flow path.
9 is a conceptual diagram schematically illustrating a coat hanger die method.
10 is a flowchart schematically illustrating a method for manufacturing a continuous fiber reinforced thermoplastic composite material using a double impregnation mold according to an embodiment of the present invention.

Hereinafter, with reference to the drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification. Further, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to components of each drawing, the same components may have the same reference numerals as much as possible even though they are indicated in different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description may be omitted.

In describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the nature, order, order, or number of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but other components may be interposed between each component. It should be understood that each component may be “interposed” or “connected”, “coupled” or “connected” through another component.

In addition, in implementing the present invention, components may be subdivided for convenience of description, but these components may be implemented in one device or module, or one component may include a plurality of devices or modules. It may be implemented by being divided into .

Continuous fiber-reinforced thermoplastic composite manufacturing device using double impregnation mold

1 is an overall configuration diagram of an apparatus for manufacturing a continuous fiber reinforced thermoplastic composite material using a double impregnation mold according to an embodiment of the present invention.

The continuous fiber-reinforced thermoplastic composite manufacturing apparatus 1000 using a double impregnation mold according to an embodiment of the present invention includes a fiber supply unit 100, a fiber transfer unit 200, a spreading unit 300, a double impregnation mold unit 400, It includes a shared extruder 500 , a cooling roll unit 600 , and a winding roll unit 700 .

The fiber supply unit 100 supplies a plurality of fibers, for example, the first fiber 101 and the second fiber 102 . Here, the first fiber 101 and the second fiber 102 may be the same type of fiber or may be different types of fiber. If the first fiber 101 and the second fiber 102 are the same type of fiber, the productivity of the UD sheet may be increased by about two times. If the first fiber 101 and the second fiber 102 are different types of fibers, it may be possible to manufacture a UD sheet made of two types of fibers using a single manufacturing line.

As a specific example, the fiber supply unit 100 includes a first bobbin 110 and a second bobbin 120 . The first bobbin 110 winds and stores the first fiber 101 to supply the first fiber 101 . And the second bobbin 120 is stored by winding the second fiber 101 to supply the second fiber 102 . At this time, although not shown separately, a creel device for controlling the tension of the first and second fibers 101 and 102 may be provided on each of the first and second bobbins 110, and various creel devices obvious to those skilled in the art Available without restrictions.

The fiber transport unit 200 guides the plurality of fibers supplied from the fiber supply unit 100 , that is, the first and second fibers 101 and 102 in different paths, to the entrance of the spreading unit 300 .

As a specific example, the fiber transfer unit 200 includes a first guide bar 210 and a second guide bar 220 .

The first guide bar 210 is a guide bar for guiding the first fiber 101 to supply the first fiber 101 supplied from the first bobbin 110 to the mouth side of the first spreader 310 . may be of the form. However, it is not necessarily limited to the illustrated form and may have various modifications obvious to those skilled in the art.

The second guide bar 220 is a guide bar for guiding the second fiber 102 to supply the second fiber 102 supplied from the second bobbin 120 to the mouth side of the second spreader 320 . may be of the form. The second guide bar 220 also does not need to be limited to the shape shown in FIG. 1 , and may be changed into various shapes according to the needs of the user.

Meanwhile, the fiber supply unit 100 may further include a first guide roll 130 for guiding the first fibers 101 supplied from the first bobbin 110 toward the first guide bar 210 . In addition, the fiber supply unit 100 may further include a first guide roll 140 for guiding the second fiber 102 supplied from the second bobbin 120 toward the second guide bar 220 . The installation form and position of the first and second guide rolls 130 and 140 are not limited to the illustrated form and may be changed to various forms apparent to those skilled in the art.

The spreading unit 300 includes a first spreader 310 and a second spreader 320 .

The first spreader 310 is a device for spreading the first fiber 101, which is one of the plurality of fibers, in the width direction. Likewise, the second spreader 320 is a device for spreading the second fiber 102 , which is another one of the plurality of fibers, in the width direction.

The second spreader 320 according to the embodiment of the present invention may be formed at a different position from the first spreader 310 .

Preferably, the second spreader 320 may be disposed parallel to the first spreader 320 with a predetermined height interval from the lower side of the first spreader 310 . In other words, the first and second spreaders 310 and 320 may be disposed side by side on the upper and lower sides with a predetermined height interval from each other, and the outlet side of each of the first and second impregnation molds 410 and 420 is the inlet side. and may be arranged horizontally.

As a specific example, the first spreader 310 may be positioned on the same height as the first impregnating mold 410 . In addition, the second spreader 320 may be vertically parallel to the first spreader 310 and positioned at the same height as the second impregnation mold 420 .

In addition, the exit side of the first spreader 310 may be formed to face each other with a front and rear distance from the entrance side of the first impregnation mold 410 . Likewise, the outlet side of the second spreader 410 may face the inlet side of the second impregnating mold 420 at a front and rear distance, and may be formed to face each other. Accordingly, the first and second fibers 101 and 102 discharged from the first and second spreaders 310 and 320 are parallel to the inlets of the first and second impregnation molds 410 and 420 with a set height difference from each other. can be put in As a result, the continuity of the spreading process and the impregnation process may be improved, and the quality of the impregnation process may be improved.

The double impregnation mold part 400 includes a first impregnation mold 410 and a second impregnation mold 420 .

The first impregnation mold 410 is a device for impregnating the resin into the first fiber 101 spread to a set width after passing through the first spreader 310 .

The second impregnation mold 420 is a device for impregnating the resin into the second fiber 102 spread to a set width after passing through the second spreader 320 . The second impregnation mold 420 may be vertically separated from the first impregnation mold 410 to have individual flow passages (hereinafter, referred to as a first flow passage 411 and a second flow passage 421 ). . Accordingly, the first impregnation mold 410 and the second impregnation mold 420 have a double impregnation mold structure separated into upper and lower parts. For this reason, the first impregnation mold 410 and the second impregnation mold 420 may be referred to as a double impregnation mold part 400 .

Therefore, the double impregnation mold part 400 may simultaneously perform the operation of impregnating the resin into the first and second fibers 101 and 102 using the first and second flow passages 411 and 421 . Accordingly, in the case of the same type of fibers, the productivity of the UD sheet can be increased by about two times, and in the case of different types of fibers, a UD sheet made of different types of fibers can be manufactured. The double impregnation mold part 400 will be described in detail later.

The shared extruder 500 refers to a single extruder for supplying resin to each of the first and second impregnating molds 410 and 420 . In other words, in the conventional case, at least one extruder was used for the impregnation mold, and the extruder corresponds to a device having a large size among all manufacturing devices. Therefore, when the number of impregnation molds is increased to two, two extruders have to be used, so there is a big problem in the space limitation of the manufacturing line. For this reason, there was a problem in that a larger space is required in order to increase the productivity of the UD sheet and to pursue a high-speed design.

In the present invention, as a way to solve the conventional problems as described above, a single, that is, one extruder, is proposed to be used by sharing the two impregnating molds, that is, the first and second impregnating molds 410 and 420, and have. As a result, it is possible to reduce the spatial constraint due to the installation of the extruder and to produce approximately double the UD sheet, thereby lowering the manufacturing cost and increasing product competitiveness.

The cooling roll unit 600 refers to a roll device that receives and cools the material impregnated with the resin in the first and second fibers through the double impregnation mold unit 400 . For example, the cooling roll unit 600 includes a first cooling roll 610 and a second cooling roll 620 . The first cooling roll 610 receives the material transferred through the first impregnation mold 410 (ie, the material impregnated with the resin in the first fiber) and cools it to a predetermined temperature. The second cooling roll 620 receives the material transferred through the second impregnation mold 620 (ie, the material in which the second fiber is impregnated with a resin) and cools it to a predetermined temperature. Preferably, the first and second cooling rolls 610 and 620 are preferably disposed with a predetermined height interval corresponding to the height difference between the first and second impregnation molds 410 and 420 . However, the arrangement of the first and second cooling rolls 610 and 620 is not necessarily limited to the illustrated form, and may be changed to various structures obvious to those skilled in the art.

The winding roll unit 700 refers to a roll device for winding a material transferred through the cooling roll unit 600 , for example, a continuous fiber reinforced thermoplastic composite (or UD sheet). For example, the winding roll unit 700 includes a first winding roll 710 and a second winding roll 720 . The first winding roll 710 winds up the material that has passed through the first cooling roll 610 . And the second winding roll 720 winds up the material that has passed through the second cooling roll 620 . Preferably, the first and second winding rolls 710 and 720 may be disposed with a predetermined height interval therebetween. However, it is not necessarily limited to the illustrated form.

shared extruder

2 is a conceptual diagram schematically illustrating a shared extruder and a double impregnation mold in the continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold according to an embodiment of the present invention.

Among the continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold according to an embodiment of the present invention, the co-extruder 500 is a resin in each of the first and second impregnation molds 410 and 420 in which the resin is impregnated into the first and second fibers. to supply

That is, the shared extruder 500 may simultaneously (or individually) supply the resin to the first and second flow passages 411 and 421 provided inside each of the first and second impregnation molds 410 and 420 in a covalent manner.

To this end, the shared extruder 500 includes a first resin supply line 510 and a second resin supply line 520 .

The first resin supply line 510 is formed to supply the resin supplied from the shared extruder 500 to the first impregnation mold 410 . In addition, the second resin supply line 520 is formed to supply the resin supplied from the shared extruder 500 to the second impregnation mold 420 .

For example, the first and second resin supply lines 510 and 520 may use a flexible tube having an internal passage through which the resin can be smoothly transferred and supplied. However, the materials and connection types of the first and second resin supply lines 510 and 520 do not need to be particularly limited, and various materials and connection types apparent to those skilled in the art can be used by changing them.

Each of the first and second resin supply lines 510 and 520 may have an independent resin supply path for supplying the resin to each of the first and second impregnating molds 410 and 420 . Therefore, it is preferable to form a flexible tube separated from each other.

Meanwhile, the shared extruder 500 includes a first resin supply nozzle 511 and a second resin supply nozzle 521 .

The first resin supply nozzle 511 is connected to an end of the first resin supply line 510 . The first resin supply nozzle 511 may inject a resin into the first flow path part 411 of the first impregnation mold 410 . In addition, a first resin discharge unit 512 for discharging the resin into the first flow path unit 411 may be provided at the tip of the first resin supply nozzle 511 .

The second resin supply nozzle 521 is connected to the end of the second resin supply line 520 . The second resin supply nozzle 521 may inject the resin into the second flow path portion 421 of the second impregnation mold 420 . In addition, a second resin discharge unit 522 for discharging the resin into the second flow path unit 421 may be provided at the tip of the second resin supply nozzle 521 .

For example, the first resin discharge unit 512 may be formed to discharge the resin from the inlet side of the first flow path unit 411 toward the inside of the first flow path unit 411 from top to bottom. This is called a top discharge method.

In addition, the second resin discharging part 522 may be formed to discharge the resin from the inlet side of the second flow path part 421 toward the inside of the second flow path part 421 from the bottom to the top. This is called a bottom discharge method.

As a specific example, the first resin discharging unit 512 discharges the resin in a direction crossing the longitudinal direction of the first flow path unit 411 , vertically from top to bottom toward the inside of the first flow path unit 411 . It may be configured to discharge the resin.

In addition, the second resin discharging unit 522 discharges the resin in a direction crossing the longitudinal direction of the second flow path unit 421 , and discharges the resin vertically from the bottom to the inside of the second flow path unit 421 . can be configured to

In addition, the first resin discharging part 512 and the second resin discharging part 522 may be formed at the same position facing each other with respect to the double impregnated mold part 400 , but the first resin discharging part 512 . and the second resin discharging unit 522 may be formed to be symmetrically opposite to each other in discharging the resin. Therefore, as the supply system of the resin connected from the co-extruder 500 to the first and second flow passages 411 and 421, respectively, has a symmetrical shape, the supply and pressure of the resin can be controlled with a constant control flow to make it common It has the advantage that it is easy to control the supply of resin in the form of

Double impregnated mold part

3 and 4 are conceptual views showing various embodiments of the double impregnation mold part in the continuous fiber-reinforced thermoplastic composite manufacturing apparatus using the double impregnation mold according to the embodiment of the present invention. 5 to 7 are conceptual views showing first and second damage prevention flow paths according to an embodiment of the present invention.

As shown, in the shared extruder 500, the first and second resin supply lines 510 and 520 and the first and second resin supply nozzles 511 and 512 through the first and second resin discharge units 512 and 522. The resin is supplied to each flow path of the first and second impregnating molds 410 and 420 through the .

In the case of FIG. 3 , both the first flow path part 411 of the first impregnation mold 410 and the second flow path part 421 of the second impregnation mold 420 have a wave shape having a set length L. has an impregnation section of

On the other hand, in the first flow path part 411, the first fiber is supplied from the inlet side and discharged to the outlet side. At this time, the resin discharged from the upper portion of the first resin discharging unit 512 is filled in the first flow path part 411 and the resin is impregnated into the first fiber.

In addition, in the second flow path part 421, the second fiber is supplied from the inlet side and discharged to the outlet side. At this time, the resin discharged from the lower portion of the second resin discharging unit 522 is filled in the inside of the second flow path unit 521 and the second fiber is impregnated with the resin.

However, when the entire impregnation section of the first flow path part 411 is formed only in a wave shape (see FIG. 3 ), when the resin is discharged from the top, in the initial section of the first flow path part 411, the lower portion of the first fiber A portion that is not impregnated with the resin (that is, an unimpregnated portion) is present. If the impregnation is performed at high speed, the non-impregnated portion of the first fiber may come into contact with the wave shape of the first flow path part 411 to cause damage to the first fiber. In particular, as the line speed of the first fiber increases, the amount of damage may increase. Accordingly, it is preferable to further form a first damage prevention flow path 414 (refer to FIG. 4 ) capable of preventing damage to the first fibers in the initial section of the first flow path part 411 .

Conversely, when the entire impregnation section of the second flow path part 421 is formed only in a wave shape (see FIG. 3 ), when the resin is discharged from the bottom, the second fiber in the initial section of the second flow path part 421 An unimpregnated portion is present on the upper part of the If impregnated at high speed, the non-impregnated portion of the second fiber may heavily contact the wave shape of the second flow path portion 421 to cause damage to the second fiber. In particular, as the flux of the second fiber increases, the amount of damage may increase. Accordingly, it is preferable to further form a second damage prevention passage 424 (refer to FIG. 4 ) capable of preventing damage to the second fiber in the initial section of the second passage portion 421 .

first flow path

4 and 5 , the first flow path part 411 includes a first wave-type main flow path 412 and a first damage prevention flow path 414 .

The first wave-type main flow path 412 refers to a main flow path of the first impregnating mold 410 for impregnating the first fiber with a resin. The first wave-type main flow path 412 has the same (or similar) shape to the wave shape of the first flow path part 411 of FIG. 3 .

The first damage prevention passage 414 is located in front of the first wave-type main passage 412 .

In other words, the first damage prevention flow path 414 is located at the beginning of the first flow path part 411, and the portion that is not impregnated by the resin discharged from the upper portion when the first fiber is put in, that is, the first fiber is not impregnated. prevent damage to parts. In this case, when the resin is discharged from the upper portion, the unimpregnated portion of the first fiber appears at the lower portion of the first fiber. Therefore, it is important to prevent damage due to contact friction of the lower portion of the second fiber, that is, the non-impregnated portion.

Referring to FIG. 5 , an enlarged cross-sectional structure of the first damage prevention passage 414 is shown.

When the first fiber 101 is input to the inlet (ie, the left end of FIG. 5 ) of the first damage prevention flow path 414 and the first resin discharging unit 512 discharges the resin from the top, the first fiber An unimpregnated portion may be generated in the lower portion of 101 .

If there is an overall wave-shaped main flow path without the first damage prevention flow path 414, the lower portion of the first fiber 101, that is, the non-impregnated portion, is severely contacted and rubbed against the wave shape during high-speed impregnation, and the first fiber (101) may cause damage.

Accordingly, the first damage prevention passage 414 is disposed in advance of the first wave-type main passage 412 to prevent damage to the unimpregnated portion when the first fiber 101 is initially introduced.

Specifically, a plurality of first fine protrusions 416 are provided at the upper end 415 of the first damage prevention passage, and a first wave protrusion 418 may be provided at the lower end 417 of the first damage prevention passage. have.

The plurality of first microprotrusions 416 are formed at the upper end 415 (eg, upper wall surface, etc.) of the flow passage space 4141 through which the first fibers 101 flow, specifically, the first fibers 101 . It has a shape protruding downward toward the top. For example, the plurality of first microprotrusions 416 may protrude downward at a set interval from each other to contact the upper portion of the first fiber 101 with a minimum area.

The first wave protrusion 418 is formed at the lower end 417 (eg, a lower wall surface, etc.) of the first damage prevention passage, specifically, has a shape that protrudes upward toward the lower portion of the first fiber 101 . However, the first wave protrusion 418 has a shape different from that of the plurality of first fine protrusions 416 as shown in FIG. 5 . For example, if the plurality of first fine protrusions 416 have a semicircular cross-section with a low radius of curvature r, the first wave protrusions 418 have a relatively large radius of curvature r. have a cross section.

The first wave protrusion 418 protrudes upwardly between the plurality of first microprotrusions 416 and contacts the lower center of the first fiber 101 supported at both ends by the plurality of first microprotrusions 416 at one point. support Accordingly, it is possible to prevent in advance the problem of damage to the first fiber 101, which is a disadvantage of the upper discharge method of the resin during high-speed impregnation. Furthermore, if the target line speed of the first fiber 101 is increased as necessary, the number and shape of the first microprotrusions 416 may be appropriately changed to prevent damage to the first fiber 101 .

2nd euro section

4 and 6 , the second flow path 421 includes a second wave-type main flow path 422 and a second damage prevention flow path 424 .

The second wave-type main flow path 422 refers to a main flow path of the second impregnating mold 420 for impregnating the resin into the second fiber. The second wave-type main passage 422 may have the same shape as the above-described first wave-type main passage 422 .

The second damage prevention passage 424 is located in front of the second wave-type main passage 422 . The second damage prevention flow path 424 is located at the beginning of the second flow path part 421, and the portion that is not impregnated by the resin discharged from the lower portion when the second fiber is inserted, that is, the non-impregnated portion of the second fiber is damaged. to prevent In this case, when the resin is discharged from the lower portion, an unimpregnated portion of the second fiber appears on the upper portion of the second fiber. Therefore, it is important to prevent damage due to contact friction of the upper portion of the second fiber, that is, the unimpregnated portion.

Referring to FIG. 6 , an enlarged cross-sectional structure of the second damage prevention passage 424 is shown.

The second fiber 102 is input to the inlet (ie, the left end of FIG. 6 ) of the second damage prevention passage 424 , and the second resin discharge unit 522 discharges the resin from the bottom.

If only a wave-shaped main channel exists without the second damage prevention channel 424, the upper portion of the second fiber 102, that is, the non-impregnated portion, is in contact with the wave shape of the main channel during high-speed impregnation with a large area. Friction can cause significant damage.

Accordingly, the second damage prevention passage 424 is disposed in advance of the second wave-type main passage 422 to prevent damage to the unimpregnated portion when the second fiber 101 is initially introduced.

Specifically, a plurality of second fine protrusions 426 are provided at the lower end 425 of the second damage prevention passage, and a second wave protrusion 428 may be provided at the upper end 427 of the second damage prevention passage. have.

The plurality of second microprotrusions 426 are formed at the lower end 425 (eg, lower wall surface, etc.) of the flow passage space 4241 through which the second fibers 102 flow, specifically, the second fibers 102 . It has a shape that protrudes upward toward the bottom. For example, the plurality of second microprotrusions 426 may protrude upward at a set distance from each other to make contact with the lower portion of the second fiber 102 with a minimum area (eg, point contact, etc.).

The second wave protrusion 428 is formed on the upper end 427 (eg, an upper wall surface) of the second damage prevention passage, specifically, has a shape protruding downward toward the upper portion of the second fiber 102 . However, the second wave protrusion 428 has a shape different from that of the plurality of second fine protrusions 426 as shown in FIG. 6 . For example, if the plurality of second fine protrusions 426 have a semicircular cross-section with a low radius of curvature r, the second wave protrusions 428 have a relatively large radius of curvature r. have a cross section.

The second wave protrusion 428 protrudes downwardly between the plurality of second microprotrusions 426 and contacts the upper center of the second fiber 102 supported at both ends by the plurality of second microprotrusions 426 at one point. support Accordingly, it is possible to prevent in advance the problem of damage to the second fiber 102, which is a disadvantage of the lower discharge method of the resin during high-speed impregnation.

7, in the above-described continuous fiber-reinforced thermoplastic composite material manufacturing apparatus according to an embodiment of the present invention, the cross-sectional structure of the first and second damage prevention passages 414 and 424 having symmetrical shapes is shown.

According to the embodiment of the present invention, in the case of the first impregnated mold 410 , the resin discharged from the first resin discharge unit 512 in an upper discharge manner is supplied to the first flow path unit 411 . And in the case of the second impregnating mold 420 , the resin discharged from the second resin discharging unit 522 in a lower discharging manner is supplied to the second flow path unit 421 . Therefore, although a single co-extruder 500 is used, since the opposite upper and lower ejection methods are applied to the first and second molds 410 and 420, damage to the first part of the first and second fibers 101 and 102 is avoided. In order to prevent it, the first and second damage prevention passages 414 and 424 have a shape symmetrical to each other. In this way, the cross-sectional structure of the damage prevention flow path may be appropriately changed according to the discharge direction of the resin.

comparative example

Meanwhile, FIGS. 8A, 8B, and 8C are diagrams schematically illustrating comparative examples in which upper discharge, lower discharge, and upper and lower discharge methods are applied to an impregnated mold.

First, referring to FIG. 8A , the flow path 41 of the impregnated mold 40 according to Comparative Example 1 is generally only formed in a wave shape, and the upper discharge method is applied to the resin discharge unit 51 . In this case, since one impregnation mold 40 is used, there is a disadvantage in that the production speed is reduced by about 1/2 compared to the embodiment of the present invention. In addition, since the resin is discharged from the upper portion, an unimpregnated portion is generated in the lower portion of the first fiber. During high-speed impregnation, damage may be induced in the lower portion of the fiber by contacting the lower protruding portion of the wave-shaped flow path 41 .

Referring to FIG. 8B , the flow path 41 of the impregnated mold 40 according to Comparative Example 2 is entirely formed in a wave shape, and the resin discharging unit 52 has a lower discharging method. In this case, like the impregnated mold 40 shown in Fig. 8a, there is a disadvantage in that the production speed is reduced by about 1/2 compared to the embodiment of the present invention. In addition, since the resin is discharged from the lower portion, an unimpregnated portion is generated on the upper portion of the first fiber. During high-speed impregnation, damage may be induced in the upper portion of the fiber by contacting the upper protruding portion of the wave-shaped flow path 41 .

Referring to FIG. 8C , the flow path 41 of the impregnated mold 40 according to Comparative Example 3 is formed only in a wave shape as a whole, and a plurality of resin discharge parts 51 and 52 of upper and lower discharge methods are provided. has been However, in this case, compared to Comparative Example 1 of FIG. 8A and Comparative Example 2 of FIG. 8B, damage to the non-impregnated portion of the fiber can be suppressed to some extent, but compared to the embodiment of the present invention having a co-extruder and a double impregnation mold part There is a disadvantage in that the production speed and production are reduced by about half. In other words, Comparative Example 3 of FIG. 8C applies the upper and lower discharge methods to a single impregnated passage, and has a disadvantage in lower productivity than the embodiment of the present invention having a plurality of impregnated passages.

9 is a conceptual diagram schematically illustrating a coat hanger die method. As shown, the first impregnating mold 410 has a first resin discharging unit 512 of an upper discharging method, and the second impregnating mold 420 has a lower discharging second resin discharging unit 522 . is applied.

In this case, the first and second impregnation molds 410 and 420 use coat hanger dies (Coat-Hanger Type die). As the first and second impregnation molds 410 and 420 are formed in the form of coat hanger dies, the resins R1 and R2 can be uniformly applied to the first and second fibers spread in the width direction.

Method for manufacturing continuous fiber reinforced thermoplastic composite material using double impregnation mold

10 is a flowchart schematically illustrating a method for manufacturing a continuous fiber reinforced thermoplastic composite material using a double impregnation mold according to an embodiment of the present invention.

The continuous fiber reinforced thermoplastic composite manufacturing method using a double impregnation mold according to an embodiment of the present invention comprises a fiber supply step (S100), a spreading step (S200), a double impregnation step (S300), a cooling step (S400), a winding step ( S500). Each step-by-step process may be performed using the continuous fiber-reinforced thermoplastic composite manufacturing apparatus 1000 (see FIG. 1 ) using the double impregnation mold described above.

First, the fiber supply step (S100) may be performed. In the fiber supply step (S100), a plurality of fibers are supplied. The plurality of fibers may be first and second fibers. Here, the first fiber and the second fiber may be the same type of fiber or different types of fiber.

Next, a spreading step (S200) may be performed. In the spreading step (S200), the spreading operation of spreading the first fiber, which is one of the plurality of fibers, in the width direction, and the spreading operation of spreading the second fiber, which is the other one of the plurality of fibers, at a different position from the first fiber are simultaneously performed. can be done

Next, a double impregnation step (S300) may be performed. In the double impregnation step (S300), the first and second fibers spread in the width direction at different positions through the spreading step (S200) are introduced into the first and second impregnation molds (410, 420, see FIG. 1) separated up and down. do. And the first and second impregnation molds (410, 420, see Fig. 1) by supplying the resin into each of the first and second fibers are impregnated with the resin. In this step, the resin is supplied by using a single co-extruder (500, see Fig. 1), and using a single co-extruder (500, see Fig. 1), each individual impregnated flow path (ie, the first and second flow path parts) ) having the first and second impregnation molds (410, 420, see FIG. 1) can be supplied with the resin, respectively.

Next, a cooling step ( S400 ) may be performed. In the cooling step (S400), the materials that have passed through each of the first and second impregnating molds 410 and 420 (refer to FIG. 1), that is, the materials impregnated with the resin in each of the first and second fibers are cooled.

Next, the winding step (S500) may be performed. In the winding step (S500), the materials that have been cooled to a predetermined temperature in the previous step and have been impregnated are wound up.

As described above, according to the configuration and operation of the present invention, it is possible to significantly improve the productivity of the fiber-reinforced unidirectional prepreg, that is, the UD sheet through a single manufacturing line. In addition, a fiber-reinforced unidirectional prepreg made of heterogeneous fibers, that is, a UD sheet can be simultaneously manufactured.

For example, according to the configuration and operation of the present invention, a shared extruder for supplying a resin to a plurality of impregnating molds and a plurality of impregnating molds having separate flow paths separated from each other is used. As a result, productivity can be improved by about 2 times compared to the conventional one, and UD sheets made of different types of fibers can be easily manufactured at the same time.

Actually, in the UD sheet manufacturing line, the extruder is about 5m (horizontal)*2m (length) based on mass production, and has the largest size among the lines. Since this large-size extruder can be shared for a plurality of impregnating molds, it is possible to double the production of UD sheets by utilizing the same space as before. Accordingly, the spatial utilization can be significantly improved.

Furthermore, according to the configuration and operation of the present invention, when a plurality of impregnating molds are disposed vertically, they may have a structure symmetrical to each other. As a result, uniform impregnation properties can be expressed in the upper and lower sections.

Furthermore, according to the configuration and operation of the present invention, it is possible to improve the flow path structure of each of the plurality of impregnation molds, thereby preventing damage to the non-impregnated fibers that may occur in the initial stage in the high-speed impregnation process. For example, fine protrusions may be formed in a straight section on the inlet side among the flow paths of each of the plurality of impregnation molds. According to such a flow path structure design, it is possible to prevent damage to the unimpregnated fibers in advance.

Furthermore, according to the configuration and operation of the present invention, it is possible to expect uniform application of the resin in the width direction by adopting a coat hanger type resin application method.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made.

100: fiber supply unit
101: fiber
110: first bobbin
120: second bobbin
130: first guide roll
140: second guide roll
200: fiber transfer unit
210: first guide bar
220: second guide bar
300: spreading unit
310: first spreader
320: second spreader
400: double impregnated mold part
410: first impregnated mold
411: first flow path unit
412: first wave type main flow path
414: first damage prevention flow path
4141: Eurospace
415: the top of the first damage prevention flow path
416: first microprotrusions
417: the lower end of the first damage prevention flow path
418: first wave protrusion
420: second impregnation mold
421: second flow path part
422: second wave type main flow path
424: second damage prevention flow path
4241: Eurospace
425: the lower end of the second damage prevention flow path
426: second microprotrusion
427: upper end of the second damage prevention flow path
428: second wave protrusion
500: co-extruder
510: first resin supply line
511: first resin supply nozzle
512: first resin discharge unit
520: second resin supply line
521: second resin supply nozzle
522: second resin discharge unit
600: cooling roll unit
610: first cooling roll
620: second cooling roll
700: winding roll unit
710: first winding roll
720: second winding roll
1000: continuous fiber reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold

Claims (20)

a fiber supply unit for supplying a plurality of fibers;
A first spreader that spreads a first fiber, which is one of the plurality of fibers, in a width direction, and a second spreader that spreads a second fiber, which is another one of the plurality of fibers, in a width direction at a position different from that of the first spreader. spreading unit;
A first impregnation mold for impregnating the resin into the first fiber that has passed through the first spreader, and a first impregnating mold for impregnating the resin with the second fiber passing through the second spreader in parallel with the first impregnating mold 2 a double impregnation mold portion including an impregnation mold; and
a shared extruder for supplying a resin to each of the first and second impregnated molds;
Continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold comprising a.
According to claim 1,
The first fiber and the second fiber,
Characterized in that they are the same fiber or different types of fibers
A continuous fiber-reinforced thermoplastic composite manufacturing device using a double impregnation mold.
According to claim 1,
The first spreader,
Located on the same height as the first impregnated mold,
The second spreader,
It is parallel to the first spreader vertically and is positioned on the same height as the second impregnating mold.
A continuous fiber-reinforced thermoplastic composite manufacturing device using a double impregnation mold.
4. The method of claim 3,
The outlet side of the first spreader is formed to face the inlet side of the first impregnation mold at a front and rear interval,
The outlet side of the second spreader is formed to face the inlet side of the second impregnation mold at a front and rear interval
A continuous fiber-reinforced thermoplastic composite manufacturing device using a double impregnation mold.
According to claim 1,
The co-extruder is
a first resin supply line for supplying a resin to the first impregnated mold; and
a second resin supply line for supplying the resin to the second impregnated mold;
A continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold comprising a.
6. The method of claim 5,
Each of the first and second resin supply lines,
Characterized in that it has an independent resin supply path and is formed in a flexible tube form separated from each other.
A continuous fiber-reinforced thermoplastic composite manufacturing device using a double impregnation mold.
6. The method of claim 5,
The co-extruder is
a first resin supply nozzle connected to an end of the first resin supply line and having a first resin discharge part to inject a resin into the first flow path part of the first impregnation mold; and
a second resin supply nozzle connected to the end of the second resin supply line and having a second resin discharge part to inject the resin into the second flow path part of the second impregnation mold;
A continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold comprising a.
8. The method of claim 7,
The first resin discharging unit discharges the resin from top to bottom toward the inlet of the first flow path unit,
The second resin discharging unit, characterized in that the resin is discharged from the bottom upward toward the inlet of the second flow path unit
A continuous fiber-reinforced thermoplastic composite manufacturing device using a double impregnation mold.
9. The method according to any one of claims 7 to 8,
The first flow path part,
a first wave-type main flow path for impregnating the first fiber with a resin; and
a first damage prevention flow path positioned in front of the first wave-type main flow path and configured to prevent damage to an unimpregnated portion of the first fiber when the first fiber is initially introduced;
Continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold comprising a.
10. The method of claim 9,
A plurality of first microprotrusions protruding downward at a distance from each other and in contact with the upper portion of the first fiber are provided at an upper end of the first damage prevention passage,
At a lower end of the first damage prevention passage, a first wave protrusion protruding upwardly between the plurality of first microprotrusions and contacting a lower portion of the first fiber is provided.
A continuous fiber-reinforced thermoplastic composite manufacturing device using a double impregnation mold.
9. The method according to any one of claims 7 to 8,
The second flow path part,
a second wave-type main channel impregnating the second fiber with a resin; and
a second damage prevention flow path positioned in front of the second wave-type main flow path and configured to prevent damage to an unimpregnated portion of the second fiber when the second fiber is initially introduced;
Continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold comprising a.
12. The method of claim 11,
A plurality of second microprotrusions protruding upward at a distance from each other and in contact with the lower portion of the second fiber are provided at the lower end of the second damage prevention passage,
A second wave protrusion protruding downwardly between the plurality of second microprotrusions and in contact with the upper portion of the second fibers is provided at an upper end of the second damage prevention passage.
A continuous fiber-reinforced thermoplastic composite manufacturing device using a double impregnation mold.
According to claim 1,
Each of the first impregnation mold and the second impregnation mold,
Characterized in that it is a coat hanger die (Coat-Hanger Type die)
A continuous fiber-reinforced thermoplastic composite manufacturing device using a double impregnation mold.
According to claim 1,
The fiber supply unit,
a first bobbin for supplying the first fiber; and
a second bobbin for supplying a second fiber identical to or different from that of the first fiber;
A continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold comprising a.
15. The method of claim 14,
It further includes; a fiber transfer unit for guiding the plurality of fibers supplied from the fiber supply unit to different paths to transfer to the spreading unit;
The fiber transfer unit,
a first guide bar for transferring the first fiber supplied from the first bobbin to the inlet side of the first spreader; and
a second guide bar for transferring the second fiber supplied from the second bobbin to the mouth side of the second spreader;
Continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold comprising a.
16. The method of claim 15,
The fiber supply unit,
a first guide roll for guiding the first fiber supplied from the first bobbin toward the first guide bar; and
a second guide roll for guiding the second fiber supplied from the second bobbin toward the second guide bar;
A continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold comprising a.
According to claim 1,
a first cooling roll for cooling the material in which the resin is impregnated in the first fiber in the first impregnation mold;
a cooling roll unit including a second cooling roll for cooling the material in which the resin is impregnated in the second fiber in the second impregnation mold;
A continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold further comprising a.
18. The method of claim 17,
a first winding roll for winding the material that has passed through the first cooling roll;
a winding roll unit including a second winding roll for winding the material that has passed through the second cooling roll;
A continuous fiber-reinforced thermoplastic composite manufacturing apparatus using a double impregnation mold further comprising a.
A method for manufacturing a continuous fiber reinforced thermoplastic composite material using a double impregnation mold, comprising:
(a) a fiber supply step of supplying a plurality of fibers;
(b) a spreading step of spreading a first fiber, which is one of the plurality of fibers, in the width direction, and at the same time, spreading a second fiber, which is another one of the plurality of fibers, at a position different from that of the first fiber; and
(c) Double impregnation in which the first and second fibers spread in the width direction are put into the first and second impregnation molds separated vertically, and the first and second fibers are impregnated with resin inside the first and second impregnation molds, respectively step; including,
In step (c), the resin is supplied to each of the first and second impregnation molds using a single co-extruder.
A method for manufacturing a continuous fiber reinforced thermoplastic composite material using a double impregnation mold.
20. The method of claim 19,
After step (c),
(d) a cooling step of cooling the materials impregnated with the resin in each of the first and second fibers by passing through each of the first and second impregnating molds; and
(e) a winding step of winding the cooled materials;
A method for manufacturing a continuous fiber-reinforced thermoplastic composite material using a double impregnation mold comprising a.

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