JP5337396B2 - Laminated board - Google Patents

Description

The present invention relates to a product layer plate.

  Conventionally, what formed in the sheet form using the thermoplastic resin which mix | blended glass fiber as a shaping | molding base material, and improved the rigidity of the sheet | seat is known (for example, refer patent document 1).

In Patent Document 1, a thermoplastic resin granular material and a reinforcing fiber having a predetermined length are mixed and dispersed in water or water bubbles, a web is produced by a papermaking method, and further heated, pressurized, and cooled. Manufactures sheets containing glass fibers.
JP-A-11-20017

  However, in the above prior art, a sheet containing glass fibers is formed by mixing and dispersing thermoplastic resin granules and reinforcing fibers, so that glass fibers facing various directions are dispersed inside. A sheet is formed. Therefore, when an integral hinge is formed on a laminate formed using such a sheet and a hinge bending endurance test is performed on a portion where the integral hinge is formed, the hinge breaks.

The present invention, on which can increase the rigidity of the laminate, and to obtain a product layer plate that can of improving the durability of the hinge.

According to the first aspect of the present invention, a pair of thermoplastic resin plate portions whose end portions are welded to each other and one plate portion of the pair of plate portions are bent to the other plate portion side. An integral hinge formed by welding, wherein at least one of the plate portions is a molded base material formed into a sheet shape using a thermoplastic resin blended with glass fibers. Te, the molding substrate is formed by extrusion molding, the inside of the molding substrate is formed by using the molding substrate of the glass fiber are dispersed so as to have orientation in one direction The integral hinge is formed such that an axial direction thereof is substantially parallel to an orientation direction of the glass fiber of the one plate portion .

The invention according to claim 2 is characterized in that, in the laminated board according to claim 1, a filler is blended in the thermoplastic resin.

According to invention of Claim 1, since the shaping | molding base material which mix | blended glass fiber is formed by extrusion molding, the glass fiber inside a shaping | molding base material can be orientated so that it may face one direction. As a result, it is possible to obtain a molded base material having improved rigidity, heat resistance strength, and impact resistance in the orientation direction of the glass fibers.
Then, it is formed by using a molded base material in which glass fibers are dispersed so as to have orientation in one direction on at least one plate portion, and bending one plate portion toward the other plate portion and welding it. The axial direction of the integral hinge is parallel to the orientation direction of the glass fiber, so that the rigidity of the laminated board with the integral hinge can be increased and the durability of the integral hinge of the laminated board is improved. To be able to.

According to invention of Claim 2, since the shaping | molding base material is formed using the thermoplastic resin which added the filler, not only the orientation direction of glass fiber but the glass fiber of the added filler. A laminated board using a molded base material with improved rigidity and heat resistance strength in directions other than the orientation direction can be obtained.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view showing an outline of a forming substrate manufacturing apparatus according to the present embodiment, FIG. 2 is a perspective view of the laminated plate viewed from the back side, FIG. 3 is a sectional view of the laminated plate, and FIG. It is a disassembled perspective view of the laminated material with a covering material which bonded together the nonwoven fabric.

  A sheet (molded substrate) 1 according to the present embodiment is formed using a thermoplastic resin in which chopped glass having a fiber length of 5 mm to 15 mm is blended as the glass fiber 2. In this embodiment, a polypropylene resin is used as the thermoplastic resin.

  Furthermore, in this embodiment, a polypropylene resin (thermoplastic resin) to which a filler is added in addition to the glass fiber 2 is used. As this filler, various materials such as silica, calcium carbonate, talc, mica, carbon fiber, and wood powder can be used.

  And in the sheet | seat 1, the glass fiber 2 is disperse | distributed so that it may have orientation in one direction.

  In the present embodiment, the sheet 1 is formed by extruding glass fiber and filled resin using an extrusion molding machine 10.

  Hereinafter, the manufacturing method of the sheet | seat 1 is demonstrated.

  First, the molten glass fiber and the resin containing filler are extruded into a sheet shape with a predetermined thickness between the polishing rolls 12 and 13 from the outlet 11 a of the extruder 11 to form the sheet material 3. At this time, the glass fibers 2 inside the sheet material 3 are oriented so that the longitudinal direction thereof is in one direction (the traveling direction of the extruded resin).

  Then, the sheet material 3 extruded on the polishing roll 13 is moved in accordance with the rotation of the polishing roll 13 that rotates clockwise in FIG. 1, and passes between the polishing roll 13 and the polishing roll 14. The material 3 is reversed and moved along with the rotation of the polishing roll 14 that rotates counterclockwise on the polishing roll 14.

  The sheet material 3 is shaped so that the surface is smoothed while being cooled while moving in contact with the polishing rolls 12, 13, and 14.

  Next, the paper is cut into an appropriate size by the cutting machine 17.

  When the sheet material 3 is formed, the nonwoven fabric 15 may be laminated on the sheet material 3 as shown in FIG.

  Thus, a sheet 1 in which the glass fibers 2 are oriented in one direction is formed.

  According to the above embodiment, since the sheet (molded substrate) 1 containing the glass fiber 2 is formed by extrusion molding, the glass fiber 2 inside the sheet (molded substrate) 1 faces in one direction. The orientation can be as follows. As a result, it is possible to obtain a sheet (molded substrate) 1 with improved rigidity, heat resistance strength, and impact resistance in the orientation direction of the glass fibers 2.

  Furthermore, the sheet | seat (molding base material) 1 which improved the rigidity and heat resistant strength in directions other than the orientation direction of the glass fiber 2 with a filler can be obtained.

  Next, a laminated board formed using the seat 1 will be described by taking a floor board laid in a car trunk room as an example.

  The floor board (laminate board) 20 according to the present embodiment includes a main body portion 21 made of a thermoplastic resin, and a covering portion 23 in which the surface 21 a side of the main body portion 21 is covered with a nonwoven fabric 22. Includes a pair of boards 24 and 25, and the pair of boards 24 and 25 are integrally connected via an integral hinge 26.

  The main body portion 21 has a three-layer structure, and is interposed between the back surface side plate portion (one plate portion) 27, the front surface side plate portion 28, and the back surface side plate portion 27 and the front surface side plate portion 28. The foam resin 29 as a raised cross-linking material, which is a thermoplastic resin foam molded body that supports the back side plate part 27 and the front side plate part 28, and the back side plate part 27 and the front side plate part 28, And a substantially rectangular tubular reinforcement 30 as a reinforcing member for increasing the rigidity of the board 20.

  Furthermore, the nonwoven fabric 22 is bonded to the surface 28a of the surface side plate portion 28.

  Further, the end portion 28b of the front surface side plate portion 28 and the end portion 22a of the nonwoven fabric 22 are bent toward the back surface side plate portion 27 side, and the end portion 27a of the back surface side plate portion 27 is bent toward the front surface side plate portion 28 side. By welding the portion 27a, a hollow molded body with a raised cross-linking material is formed.

  Here, the back surface side plate portion 27 and the front surface side plate portion 28 are formed using the sheet 1. And the glass fiber 2 is uniformly so that the longitudinal direction of the said glass fiber 2 may face one direction (the width direction of the floor board 20 in this embodiment) in each of these back surface side board parts 27 and the surface side board parts 28. Is distributed.

  Further, the integral hinge 26 is formed by bending the back surface side plate portion 27 toward the front surface side plate portion 28 and welding it to the front surface side plate portion 28 side. It is formed in the width direction of the floor board 20 so that the direction of the rotation axis is substantially parallel to the direction in which the longitudinal direction of the glass fiber 2 faces.

  The floor board 20 has a nonwoven fabric sheet 34 bonded to the surface of a laminated material 33 formed by interposing a foamed resin 29 and a reinforcement 30 between a back surface side cover sheet 31 and a front surface side cover sheet 32. The laminated material 35 with covering material is formed as a hollow double wall structure by blow molding using a mold (not shown) having an upper and lower mold.

  Next, a method for forming the floor board 20 will be described.

  First, in the upper and lower molds (not shown) in which the linear pressing member is formed in the lower mold, the foamed resin 29 is placed at a predetermined position of the back-side cover sheet 31 that has been heat-softened in the order shown in FIG. Then, the laminated material 35 with covering material is formed by placing the reinforce 30 and placing the surface-side cover sheet 32 and the nonwoven fabric sheet 34 heated and softened above the foamed resin 29 and the reinforce 30.

  At this time, the laminated material 35 with the covering material is arranged so that the axial direction of the pressing member and the longitudinal direction of the glass fiber 2 dispersed so as to have orientation in the back surface side cover sheet 31 are substantially parallel.

  Next, the upper and lower molds are clamped to weld the peripheral portions of the back side cover sheet 31, the front side cover sheet 32, and the nonwoven fabric sheet 34, and the back side cover sheet 31 is pressed upward by the pressing member. And it is made to weld to the surface side cover sheet 32 side.

  Next, an air blow pin (not shown) is inserted into the laminated material 35 with covering material welded by clamping, and compressed air is injected into the laminated material 35 with covering material to perform blow molding. To form a hollow molded body with a raised cross-linking material.

  Finally, the formed hollow molded body containing the raised cross-linking material is precooled between the upper mold and the lower mold and taken out from the upper and lower molds.

  In this way, the floor board (laminated board) 20 having a hollow double wall structure in which the integral hinge 26 is formed is formed.

  According to the above embodiment, the back surface side plate portion (one plate portion) 27 in which the glass fibers 2 are dispersed so as to have orientation in one direction is bent toward the front surface side plate portion (the other plate portion) 28 side. The integral hinge 26 formed by welding is formed so that the axial direction is parallel to the orientation direction of the glass fibers 2 of the back surface side plate portion (one plate portion) 27, so that the back surface side plate portion (one plate) Part) 27 can be bent easily. As a result, the rigidity of the floor board (laminate board) 20 having the integral hinge 26 can be increased, and the durability of the integral hinge 26 of the floor board (laminate board) 20 can be improved. .

  As mentioned above, although preferred embodiment of the shaping | molding base material concerning this invention and a laminated board using the same was described, this invention is not restricted to the said embodiment, A various embodiment is employ | adopted in the range which does not deviate from a summary. Can do.

  For example, in the said embodiment, although the molding base material made from a polypropylene resin is used, what is necessary is just the molding base material made from a thermoplastic resin, for example, what was formed with plant origin resin, such as a polylactic acid resin, may be sufficient as it. .

  Moreover, in the said embodiment, although the nonwoven fabric is used, you may use another fabric, a leather skin, etc.

  Moreover, in the said embodiment, although the laminated material with a covering material which bonded the nonwoven fabric on the surface of the laminated material is used, it is also possible to use what laminated the nonwoven fabric on the front and back of the laminated material, and a nonwoven fabric. It is also possible to use a laminated material that is not bonded together.

  Moreover, in the said embodiment, although the sheet | seat which disperse | distributed so that it may have orientation in one direction is used not only for a back surface side cover sheet but for a surface side cover sheet, a back surface side cover sheet or a surface side cover Only a sheet having an orientation may be used.

  Moreover, in the said embodiment, although the hollow molded object containing the raising cross-linking material was illustrated, the blow molded product of the hollow double wall structure which does not contain any one or both of foaming resin and reinforcement may be sufficient.

  In the above-described embodiment, the floor board is exemplified as the laminated plate, but the present invention can also be implemented using other interior materials and exterior materials for vehicles and buildings.

The side view which shows the outline | summary of the manufacturing apparatus of the shaping | molding base material concerning one Embodiment of this invention. The perspective view which looked at the laminated board concerning one Embodiment of this invention from the back surface side. Sectional drawing of the laminated board concerning one Embodiment of this invention. The disassembled perspective view of the laminated material with a covering material which bonded together the nonwoven fabric concerning one Embodiment of this invention.

Explanation of symbols

1 Sheet (molding substrate)
2 Glass fiber 20 Floor board (laminate)
27 Front side plate (one plate)
28 Back side plate (the other plate)
29 Foamed resin (raised cross-linked member)

Claims (2)

Integral formed by welding a pair of plate parts made of a thermoplastic resin whose ends are welded to each other, and bending one plate part of the pair of plate parts to the other plate part side A laminated board comprising a hinge,
At least one of the plate portions is a molded base formed in a sheet shape using a thermoplastic resin blended with glass fiber, and the molded base is formed by extrusion molding, and the molded base Is formed using a molding substrate in which the glass fiber is dispersed so as to have orientation in one direction ,
The integral hinge is formed so that an axial direction thereof is substantially parallel to an orientation direction of the glass fiber of the one plate portion . The laminate according to claim 1, wherein a filler is blended in the thermoplastic resin.

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