JP2013127130A - Apparatus and method for manufacturing glass chopped strand mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for manufacturing a glass chopped strand mat that is capable of manufacturing a high quality product without a wrinkle at low cost in manufacturing a glass chopped strand mat having a low basis weight for which the demand is increasing in these days.SOLUTION: There is provided an apparatus for manufacturing a glass chopped strand mat in which a glass chopped strand mat M having a basis weight of 300 g/mor less is manufactured from a glass chopped strand S. The apparatus includes: wrinkle prevention means 80 for smoothing wrinkles generated in the glass chopped strand mat M; and winding means 90 for winding the glass chopped strand mat M, after the wrinkles are smoothened, into a rolled shape.

Description

  The present invention relates to a glass chopped strand mat manufacturing apparatus and a manufacturing method for manufacturing a glass chopped strand mat having a small basis weight from glass chopped strands.

  Glass chopped strand mats are conventionally used as reinforcing materials for glass fiber reinforced plastic (GFRP) molded products such as bathtubs and septic tanks. In addition, an automobile-molded ceiling material that has been adopted as a reinforcing base material for automobile-molded ceiling materials and in which glass chopped strand mats are bonded to both surfaces of a polyurethane foam sheet has been developed. In recent years, the weight of automobiles has been reduced, and the weight of automobile molded ceiling materials has been required to be reduced. Therefore, there is an increasing demand for glass chopped strand mats with a small basis weight that reduce the amount of glass chopped strands used as raw materials.

  In order to produce a glass chopped strand mat, first, glass fibers are cut into a predetermined length to obtain glass chopped strands. Next, the glass chopped strands are dispersed on a conveying means such as a belt conveyor and deposited in a sheet form. This glass chopped strand goes through a plurality of steps while being conveyed by a belt conveyor. For example, there are a step of spraying the binder onto the glass chopped strand, a step of heating the glass chopped strand with the binder attached thereto, and a step of cooling and pressing the heated glass chopped strand. The glass chopped strand mat completed through these steps is wound by a winder or the like so as to be rolled, and then shipped.

  Here, when manufacturing a glass chopped strand mat with a small basis weight (that is, a small thickness), the following problems may occur. A glass chopped strand mat undergoes some expansion and contraction during production, but a glass chopped strand mat having a small basis weight has a small thickness, and thus it is difficult to sufficiently absorb such expansion and contraction. Therefore, the shrinkage that could not be absorbed becomes wrinkles and remains in the glass chopped strand mat. In particular, wrinkles are likely to occur between the step of cooling and pressing the glass chopped strand and the step of winding with a winder. When the glass chopped strand mat in which wrinkles are generated is used as a wound product, the wrinkles remain in the wound product as they are and appear on the surface of the glass chopped strand mat even when the wound product is released. A glass chopped strand mat having such wrinkles is not only inferior in commercial value, but when a molded product is produced using the glass chopped strand mat, there is a risk that defects such as molding defects, delamination and insufficient strength may occur.

  Conventionally, as a technique for removing wrinkles generated in a sheet-like material, a method of extending a wrinkle by sliding a member such as a split bar or an expander roll on the sheet-like material is widely known (for example, Patent Document 1). reference). The winding device for the belt-like material (sheet-like material) of Patent Document 1 arranges the expander roll at a position close to the roll around which the belt-like material is wound, and the width of the belt-like material immediately before being wound on the roll (皺) (Stretching) is performed to remove wrinkles generated in the strip.

JP-A-63-196445

  However, in the case of a glass chopped strand mat, various problems may occur if an expander roll is used to stretch the wrinkles. The glass chopped strand mat is a molded body in which glass chopped strands obtained by cutting glass fibers into a predetermined length are hardened with a thermoplastic resin as a binder. That is, it is a mixture of glass fiber and thermoplastic resin. For this reason, when the surface of the glass chopped strand mat is rubbed strongly by a sliding member such as an expander roll, the thermoplastic resin contained in the glass chopped strand mat is melted by frictional heat, and as a result, the glass chopped strand as a product There is a risk of quality degradation of the mat. In particular, when an expander roll is used for a glass chopped strand mat having a small basis weight, since the thickness of the glass chopped strand mat is small, the entire glass chopped strand mat is easily overheated by frictional heat with the expander roll. For this reason, there is a possibility that the glass chopped strand mat may be damaged, or troubles such as so-called “gum up” in which the molten thermoplastic resin adheres to the surface of the expander roll may occur. Further, the expander roll is provided only at a position where tension can be generated in a direction crossing the traveling direction such as a corner portion where the traveling direction of the glass chopped strand mat is bent, among the traveling paths of the glass chopped strand mat. I can't. Furthermore, the expander roll is an expensive part in itself. As described above, the use of the expander roll has restrictions on the device configuration, which makes the facility design complicated and increases the facility cost.

As described above, in the present situation, particularly for a glass chopped strand mat having a small basis weight, there is still no technology that can reliably and easily remove wrinkles generated during production without damaging the glass chopped strand mat. Not established. The present invention has been made in view of the above-mentioned problems, and in producing a glass chopped strand mat with a low weight per unit area in recent years, it is possible to produce a high-quality product without wrinkles at a low cost. An object of the present invention is to provide a manufacturing apparatus and a manufacturing method of a possible glass chopped strand mat. In the present invention, a glass chopped strand mat having a small basis weight is particularly assumed to be 300 g / m ² or less.

The characteristic configuration of the glass chopped strand mat manufacturing apparatus according to the present invention for solving the above problems is as follows.
A glass chopped strand mat manufacturing apparatus for manufacturing a glass chopped strand mat having a basis weight of 300 g / m ² or less from a glass chopped strand,
Anti-fouling means for extending wrinkles generated in the glass chopped strand mat,
Winding means for winding the chopped glass chopped strand mat into a roll,
It is in having.

The basis weight of the glass chopped strand mat is defined as 230 to 900 g / m ² according to Japanese Industrial Standard (JIS). For this reason, conventionally, many products exceeding 300 g / m ² have been manufactured as the basis weight of the glass chopped strand mat. Such a product having a relatively large basis weight has a certain thickness, so that the occurrence of wrinkles hardly poses a problem. However, in a glass chopped strand mat having a small basis weight (300 g / m ² or less), since stretchability is insufficient, wrinkles are likely to occur during production. It is not preferable for a glass chopped strand mat having a small basis weight to stretch this wrinkle with a sliding contact member such as an expander roll. On the other hand, if a molded product is produced without sufficiently removing wrinkles generated on the glass chopped strand mat, there is a possibility that defects such as molding defects, delamination, and insufficient strength may occur. Therefore, in order to maintain the quality of the molded product, it is desired to remove the wrinkles before winding the glass chopped strand mat into a roll.
In this regard, according to the glass chopped strand mat manufacturing apparatus of the present configuration, there is a fender for extending the wrinkles generated in the glass chopped strand mat. If the fender is used, wrinkles generated on the glass chopped strand mat can be almost completely removed before the glass chopped strand mat is wound around the winding means in a roll. Or generation | occurrence | production of the wrinkle in a glass chopped strand mat can be prevented beforehand. As a result, when a molded product is manufactured using a glass chopped strand mat, defects such as molding defects do not occur and a product with excellent quality can be obtained.

In the apparatus for producing a glass chopped strand mat according to the present invention,
The fender is preferably a pressing unit that presses the glass chopped strand mat.

  According to the manufacturing apparatus of the glass chopped strand mat of this configuration, the wrinkles generated in the glass chopped strand mat can be easily removed simply by pressing the glass chopped strand mat using the pressing means. The pressing means causes less damage to the glass chopped strand mat compared to a sliding contact member such as an expander roll. Moreover, if a pressing means is used, expensive parts such as an expander roll are also unnecessary. For this reason, the apparatus configuration is simplified, and there are few restrictions on the installation location, so that the equipment cost can be suppressed.

In the apparatus for producing a glass chopped strand mat according to the present invention,
It is preferable that the pressing force of the pressing means is set to 0.5 to 3 g / cm ² .

According to the apparatus for manufacturing a glass chopped strand mat of this configuration, the glass chopped strand mat is hardly damaged by setting the pressing force of the pressing means to 0.5 to 3 g / cm ^2. It is possible to remove the wrinkles generated in

In the apparatus for producing a glass chopped strand mat according to the present invention,
It is preferable that the pressing means is disposed so as to fit within the entire width of the glass chopped strand mat, and the width of the pressing means is set to 70% or more and less than 100% with respect to the total width of the glass chopped strand mat.

  According to the glass chopped strand mat manufacturing apparatus of this configuration, the pressing means is disposed so as to be within the entire width of the glass chopped strand mat, and the width of the pressing means is 70% or more to the total width of the glass chopped strand mat. By setting it to less than%, the wrinkles generated in the glass chopped strand mat are stretched by the pressing means and move so as to escape to both sides of the pressing means, that is, both ends of the glass chopped strand mat. As a result, a flat glass chopped strand mat without wrinkles can be obtained.

In the apparatus for producing a glass chopped strand mat according to the present invention,
It is preferable that the side opposite to the side where the pressing means is pressed against the glass chopped strand mat is in a non-contact state.

According to the glass chopped strand mat manufacturing apparatus of this configuration, the glass chopped strand mat may be rubbed against the member by leaving the opposite side of the side where the pressing means is pressed against the glass chopped strand mat in a non-contact state. Therefore, troubles such as gum-up in which a binder or the like is fixed to the member can be prevented in advance. In addition, since the contact area to other members in the glass chopped strand mat is reduced, the binder contained in the glass chopped strand mat is not melted or peeled off by friction, and is wound around the winding means. The glass chopped strand mat can be wound in a beautiful state.
In addition, when the glass chopped strand mat is brought into a non-contact state (that is, in a floating state) with respect to the member as in this configuration, the glass chopped strand mat is substantially tensioned in the direction intersecting the traveling direction. Therefore, it is impossible to apply a sliding contact member such as an expander roll. Therefore, the pressing means of the present configuration capable of removing wrinkles only by being brought into pressure contact with the glass chopped strand mat is particularly effective.

The characteristic composition of the manufacturing method of the glass chopped strand mat concerning the present invention for solving the above-mentioned subject,
A glass chopped strand mat manufacturing method for manufacturing a glass chopped strand mat having a basis weight of 300 g / m ² or less from a glass chopped strand,
An antifouling step of extending wrinkles that may occur in the glass chopped strand mat;
A winding step of winding the chopped glass chopped strand mat into a roll;
It is to include.

  According to the manufacturing method of the glass chopped strand mat of this structure, there exists an effect similar to the manufacturing apparatus of the glass chopped strand mat mentioned above. That is, according to the manufacturing method of the glass chopped strand mat of this configuration, by performing the anti-rusting process of stretching the wrinkles generated in the glass chopped strand mat, before the winding process of winding the glass chopped strand mat in a roll shape In addition, wrinkles generated on the glass chopped strand mat can be almost completely removed. Or generation | occurrence | production of the wrinkle in a glass chopped strand mat can be prevented beforehand. As a result, when a molded product is manufactured using a glass chopped strand mat, defects such as molding defects do not occur, and a molded product with excellent quality can be obtained.

FIG. 1 is a schematic view showing the overall configuration of a glass chopped strand mat manufacturing apparatus according to the present invention. FIG. 2 is a schematic view showing the pressing means according to the first embodiment of the present invention. FIG. 3 is a schematic view showing the pressing means according to the second embodiment of the present invention.

  Hereinafter, the manufacturing apparatus and manufacturing method of the glass chopped strand mat of this invention are demonstrated based on FIGS. 1-3. However, the present invention is not intended to be limited to the configurations described in the embodiments and drawings described below.

FIG. 1 is a schematic view showing the overall configuration of a glass chopped strand mat manufacturing apparatus (hereinafter simply referred to as “manufacturing apparatus”) 100 according to the present invention. The manufacturing method of the glass chopped strand mat according to the present invention is performed using the manufacturing apparatus 100. The manufacturing apparatus 100 can manufacture a glass chopped strand mat having a small basis weight of, for example, 300 g / m ² or less from the glass chopped strand, and mainly includes the chamber 10, the dispersion conveyor 30, the first conveyor 50, and the second. A conveyor 60, a cold pressure roll 70, a fender 80, a winder 90, and the like are provided. Among these, the configuration of the main part Z including the fender 80 and the winder 90 surrounded by the dotted line in FIG. 1 has the unique features of the present invention, and is essential for the present invention. Become.

  The distribution conveyor 30, the first conveyor 50, and the second conveyor 60 are continuously installed from the upstream side to the downstream side in this order. Each conveyor is driven by a motor D, and a computer 11 serving as a control unit controls each conveying speed (belt moving speed). However, the operator may appropriately adjust the transport speed of each conveyor by manual operation.

  The dispersion conveyor 30 includes a belt for dispersing and arranging the glass chopped strands, and is installed below the chamber 10 that accommodates the glass chopped strands. A cutting machine 20 for cutting a glass fiber F, which will be described later, is attached to a glass fiber inlet 10 a provided in the ceiling of the chamber 10. The cutting machine 20 includes a cutter roller 21 and a rubber roller 22, and the glass fiber F drawn from the glass cake 1 is fed between the rotating cutter roller 21 and the rubber roller 22 and continuously cut. Thereby, the glass chopped strand S is produced | generated. The glass chopped strands S fall in the chamber 10 due to gravity, and are distributed almost uniformly on the belt of the dispersion conveyor 30 and are deposited in a sheet shape. A suction device 33 including a suction duct 31 and a blower 32 is disposed below the belt on which the glass chopped strands S are deposited, and the belt is maintained in a negative pressure state. As a result, the glass chopped strands S are sucked and stabilized by the belt surface in a state where the glass chopped strands S are substantially uniformly distributed on the belt of the dispersion conveyor 30 and do not scatter around.

  Next, the glass chopped strand S moves from the dispersion conveyor 30 to the first conveyor 50. Above the first conveyor 50, a binder spreader 40 is installed to spread the binder (resin powder) A toward the glass chopped strands S on the belt of the first conveyor 50. By adding the binder A to the glass chopped strands S, the glass chopped strands S can be bonded to each other and the shape of the mat can be maintained by performing the heat treatment described below. A vibrator 51 is disposed below the belt on which the glass chopped strands S are deposited, and vibrates the belt of the first conveyor 50. Thereby, the binder A spread | diffused on the surface of the glass chopped strand S enters into the clearance gap between the glass chopped strands S deposited in the sheet form. As a result, the binder A uniformly adheres to the entire glass chopped strand S. As the kind of the binder A, a thermoplastic resin powder is suitable, and for example, a powder polyester resin (New Track 514 manufactured by Kao Corporation) can be used. In addition, examples of usable thermoplastic resin powder include resin powders such as nylon, polyethylene, polystyrene, polypropylene, and polyvinyl chloride. It is also possible to provide a water sprayer (not shown) above or below the first conveyor 50 and upstream of the binder spreader 40. If the glass chopped strands S are preliminarily wetted with water, the binder A tends to adhere to the surface of the glass chopped strands S due to the action of the surface tension of water. Rise. The glass chopped strand S on the first conveyor 50 is conveyed to the downstream second conveyor 60 in a state where the binder A is uniformly attached.

  A heating furnace 61 is installed on the second conveyor 60 so as to surround the belt. The atmospheric temperature in the heating furnace 61 is controlled by the computer 11 and is appropriately adjusted so as to be a temperature equal to or higher than the melting point of the synthetic resin constituting the binder A according to the type of the binder A to be dispersed. However, it is also possible for the worker to adjust the temperature of the heating furnace 61 by manual operation. The glass chopped strand S to which the binder A on the belt of the second conveyor 60 is attached is heated when passing through the heating furnace 61, and the binder A is softened and melted. As a result, the glass chopped strand S is in a state where the glass chopped strands S are bonded to each other (hereinafter, the glass chopped strand S is distinguished from the glass chopped strand S before heating to be S ′). Since the belt of the second conveyor 60 is exposed to a high temperature, it is made of a heat resistant material such as metal.

A cold pressure roll 70 and a winder 90 are disposed downstream of the second conveyor 60. The cold pressure roll 70 is composed of a pair of rolls. The glass chopped strand S ′ to which the binder A in a molten state is attached is conveyed to the cold pressure roll 70 and passes between the nips. The glass chopped strands S ′ are cooled and pressed by passing through the cold pressure roll 70, and the glass chopped strands S ′ are bonded to each other. Thereby, the glass chopped strand mat M is generated. Although the cold pressure roll 70 cools the glass chopped strands S ′ by air cooling, forced cooling may be performed by passing cooling water through the roll. The produced glass chopped strand mat M is wound around the roll R by the winding process of the present invention being performed by the winder 90. The winder 90 includes two surface rolls 91 and 92, and a glass chopped strand mat M is wound on the surface rolls 91 and 92 to form a roll R. The glass chopped strand M constituting the roll R is a product having a small basis weight of 300 g / m ² or less.

  Here, as described in the background art, wrinkles are likely to occur in the glass chopped strand mat M traveling in the section from the cold pressure roll 70 to the winder 90. The generation of wrinkles is particularly remarkable in a glass chopped strand mat having a small basis weight as assumed by the present invention. If such a wrinkle is left as it is, there is a risk that a molded product using a glass chopped strand mat may have molding defects, delamination, insufficient strength, and the like. Therefore, in the present invention, the fender means 80 is provided between the cold pressure roll 70 and the winder 90, and the fender process of the present invention for extending the wrinkles generated in the glass chopped strand mat M is performed. .

The fender 80 has a function of extending wrinkles generated on the glass chopped strand mat M. Specifically, the fender 80 of the present embodiment is configured as a pressing unit 80 that presses the glass chopped strand mat M. The pressing means 80 includes an elevating unit 81 that adjusts the height position with respect to the glass chopped strand mat M, a pressing sheet 82 that directly presses the glass chopped strand mat M, and a pressing sheet 82 when the production of the glass chopped strand mat M is interrupted. And a support portion 83 that lifts. The pressing sheet 82 is a rectangular plate-like object, one end of which is suspended from the elevating part 81 and the other end is connected to the support part 83. A predetermined range from the other end side of the pressing sheet 82 becomes an abutting surface that abuts while pressing the glass chopped strand mat M. When performing the fendering step, the elevating unit 81 is moved up and down to adjust the pressing force applied from the pressing sheet 82 to the glass chopped strand mat M to 0.5 to 3 g / cm ² . The pressing force can also be applied by the weight of the pressing sheet 82. In this case, the weight and the contact surface of the pressing sheet 82 are adjusted so that the pressing force is within the range. With such a pressing force, the glass chopped strand mat M is hardly damaged from the pressing means 80. The pressing sheet 82 is preferably made of an elastic member such as rubber. By giving the pressing sheet 82 appropriate elasticity, it is possible to quickly follow the unevenness of the glass chopped strand mat M and vibration during manufacturing, and thus a pressing force is reliably applied to the glass chopped strand mat M. be able to.

  On the opposite side of the pressing means 80 across the glass chopped strand mat M, a plate member 84 that guides the glass chopped strand mat M and prevents the pressing sheet from drooping is provided. At the time of manufacturing the glass chopped strand mat M, the glass chopped strand mat M is in a non-contact state (floating state) with respect to the plate member 84 due to the tension accompanying winding of the winder 90. For this reason, the binder contained in the glass chopped strand mat M does not adhere to the plate member 84 and troubles such as gum-up do not occur. Further, since the contact area with the other members of the glass chopped strand mat M is reduced, the binder contained in the glass chopped strand mat M is not melted or peeled off by friction, and is wound around the winding machine 90. When taking, the glass chopped strand mat M can be wound in a beautiful state. In addition, when the glass chopped strand mat M is floating with respect to the member, the glass chopped strand mat M is not substantially tensioned in the direction intersecting the traveling direction, so that a sliding contact member such as an expander roll is applied. It is impossible to do. Therefore, the pressing means 80 capable of removing wrinkles only by being brought into pressure contact with the glass chopped strand mat M is particularly effective. When the glass chopped strand mat M has been wound, the glass chopped strand mat M does not exist under the pressing sheet 82, so that the pressing sheet 82 tends to hang downward, but the pressing sheet 82 hits the plate member 84. In contact, excessive drooping is suppressed. For this reason, the preparatory work at the time of resumption of manufacture of glass chopped strand mat M becomes easy. When resuming the production, the support portion 83 is lifted to separate the pressing sheet 82 from the plate member 84, and then a new glass chopped strand mat M drawn from the cold pressure roll 70 is guided along the plate member 84. . In this way, the glass chopped strand mat M can be easily guided from the cold pressure roll 70 to the winder 90.

  In order for the pressing means 80 to reliably remove wrinkles generated on the glass chopped strand mat M, it is necessary to consider the size of the pressing sheet 82 and press the pressing sheet 82 against the glass chopped strand mat M in an appropriate state. is there. In this regard, a preferred configuration example of the pressing sheet 82 will be described in detail in the following first and second embodiments.

<First embodiment>
FIG. 2 is a schematic view showing the pressing unit 80 according to the first embodiment of the present invention. In the entire configuration diagram of the manufacturing apparatus 100 of FIG. 1, a region Z surrounded by a dotted line is partly viewed from the pressing unit 80 side. The state seen through is shown. In the drawing, a pressing area where the pressing sheet 82 constituting the pressing means 80 abuts on the glass chopped strand mat M is indicated by X. In addition, a wrinkle region which is a region where wrinkles can occur in the glass chopped strand mat M is indicated by Y. The wrinkle region Y may occur widely from the vicinity of the center of the glass chopped strand mat M to both ends.

  The pressing sheet 82 for removing wrinkles generated in the glass chopped strand mat M is disposed so as to be within the entire width of the glass chopped strand mat M, and is preferably disposed at the center of the entire width. In this embodiment, it arrange | positions so that the centerline of the glass chopped strand mat M and the centerline of the press sheet | seat 82 may correspond. In FIG. 2, the center lines of the two lines indicated by the alternate long and short dash line match. Here, the width B of the pressing region X is set to 70% or more and less than 100% with respect to the total width A of the glass chopped strand mat M. When the antifouling process is executed using the press sheet 82 having such an arrangement and size, the wrinkle region Y of the glass chopped strand M is stretched to the press region X of the press sheet 82 as the glass chopped strand M advances. Then, as indicated by the arrows, it moves so as to escape to both sides of the pressing sheet 82, that is, to both ends of the glass chopped strand mat M. As a result, the wrinkles of the glass chopped strand mat M disappear, and a flat glass chopped strand mat M having no wrinkles behind the pressing region X is obtained. Even when the pressing sheet 82 is arranged slightly deviated from the center of the entire width of the glass chopped strand mat M, if there is a space where the ridge region Y can move on both sides of the pressing sheet 82, the pressing sheet 82 is pressed. The wrinkles of the glass chopped strand mat M are almost eliminated by the region X, and a flat glass chopped strand mat M can be obtained.

  The distance d from the pressing region X to the roll-shaped object R around which the glass chopped strand mat M is wound is such that the pressing means 80 does not interfere with the roll-shaped object R even when the diameter of the roll-shaped object R is enlarged. It is preferable to set as small as possible. By reducing the distance d, the glass chopped strand mat M immediately after removing the wrinkles can be reliably wound around the roll-shaped material R.

<Second embodiment>
FIG. 3 is a schematic view showing the pressing means 80 according to the second embodiment of the present invention. In the entire configuration diagram of the manufacturing apparatus 100 of FIG. 1, a region Z surrounded by a dotted line is partly viewed from the pressing means 80 side. The state seen through is shown. Also in the figure, the pressing area X and the heel area Y are shown as in the first embodiment. In the second embodiment, a wide glass chopped strand mat M ′ having a width approximately twice that of the first embodiment is formed, and this is bisected at the center. The wide glass chopped strand mat M ′ is cut into two glass chopped strand mats M by the cutter 85.

  The pressing sheet 82 for removing wrinkles generated in the glass chopped strand mat M is disposed so as to fit in the entire width of each glass chopped strand mat M after cutting, and is preferably disposed in the center of the entire width. In this embodiment, it arrange | positions at two places so that the centerline of each glass chopped strand mat M and the centerline of each press sheet | seat 82 may correspond. In FIG. 3, the center lines of the two lines indicated by the alternate long and short dash line match each other. Here, the sum of the widths B1 and B2 of the two pressing regions X is set to 70% or more and less than 100% with respect to the total width A of the glass chopped strand mat M ′ before cutting. With such an arrangement and size, the ridge region Y straddling the two glass chopped strands M is stretched to the pressing region X of the pressing sheet 82 as the respective glass chopped strands M progress, as indicated by arrows. Then, it moves so as to escape to both sides of the pressing sheet 82, that is, to both ends of each glass chopped strand mat M. As a result, the wrinkles of the glass chopped strand mat M disappear, and a flat glass chopped strand mat M having no wrinkles behind the pressing region X is obtained. In addition, even if each pressing sheet 82 is arranged slightly deviated from the center of the entire width of each glass chopped strand mat M, there is a space where the heel region Y can move on both sides of each pressing sheet 82. The wrinkles of the glass chopped strand mat M are almost eliminated by the pressing regions X of the respective pressing sheets 82, and a flat glass chopped strand mat M can be obtained. In the case of the present embodiment, it is also possible to arrange one pressing sheet 82 at the center of the entire width of the glass chopped strand M and displace the other pressing sheet 82 from the center of the entire width of the glass chopped strand M. Also in this case, it is possible to obtain a flat glass chopped strand mat M by securing a space where the heel region Y can move on both sides of each pressing sheet 82.

  When manufacturing a plurality of glass chopped strand mats M ′ from a wide glass chopped strand mat M ′ as in the present embodiment, the cutting position in the wide glass chopped strand mat M ′ is upstream from the pressing region X. Is preferred. When cutting is performed on the downstream side of the pressing region X, there is a possibility that new wrinkles are generated due to cutting on the flat mat after the wrinkles are removed by the pressing sheet 82. If wrinkles remain in the glass chopped strand mat M after cutting, the ends of the glass chopped strand mats M that are juxtaposed overlap each other, and when the rolls R are formed, the overlaps are wound on each other. R may stick and be unable to be separated. However, if the cutting is completed before the pressing area X, the wrinkles are almost certainly removed by the pressing area X, so that the roll-shaped object R can be prevented from being fixed due to the overlap of the glass chopped strand mats M at the same time. .

  The glass chopped strand mat of the present invention and the glass chopped strand mat obtained by the manufacturing method thereof can be used for automobile molded ceiling materials, but for interior materials for vehicles other than automobiles and interior materials for buildings. Can also be applied.

DESCRIPTION OF SYMBOLS 10 Chamber 20 Cutting machine 30 Dispersion conveyor 40 Binder spreading | diffusion machine 50 1st conveyor 60 2nd conveyor 70 Cold-pressure roll 80 Pressing means (anti-fouling means)
DESCRIPTION OF SYMBOLS 81 Lifting part 82 Press sheet 83 Support part 90 Winding machine 100 Glass chopped strand mat manufacturing apparatus F Glass fiber S Glass chopped strand A Binder (resin powder)
M Glass chopped strand mat R Roll

Claims (6)

A glass chopped strand mat manufacturing apparatus for manufacturing a glass chopped strand mat having a basis weight of 300 g / m ² or less from a glass chopped strand,
Anti-fouling means for extending wrinkles generated in the glass chopped strand mat,
Winding means for winding the chopped glass chopped strand mat into a roll,
An apparatus for producing a glass chopped strand mat comprising:   The apparatus for producing a glass chopped strand mat according to claim 1, wherein the fender is pressing means for pressing the glass chopped strand mat. Glass chopped strand mat manufacturing apparatus according to claim 2 which is set to 0.5 to 3 g / cm ² the pressing force of said pressing means.   The pressure means is disposed so as to fit within the entire width of the glass chopped strand mat, and the width of the pressing means is set to 70% or more and less than 100% with respect to the total width of the glass chopped strand mat. 3. The apparatus for producing a glass chopped strand mat according to 3.   The manufacturing apparatus of the glass chopped strand mat as described in any one of Claims 2-4 which has made the non-contact state the opposite side to the side where the said press means press-contacts with respect to the said glass chopped strand mat. A glass chopped strand mat manufacturing method for manufacturing a glass chopped strand mat having a basis weight of 300 g / m ² or less from a glass chopped strand,
An anti-bacterial process for extending wrinkles generated in the glass chopped strand mat;
A winding step of winding the chopped glass chopped strand mat into a roll;
A method for producing a glass chopped strand mat comprising: