JP2006076446A - Floor board for vehicle and its end treatment method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor board for a vehicle structured so that a skin material is supported certainly on the base material capable of reducing the manufacturing cost and to provide an end treatment method therefor. <P>SOLUTION: The floor board is composed of the base material 11/12 made of synthetic resin capable of generating an adhesive strength between 130-180°C in a mould at the time of blow molding and the skin material 13 made of synthetic resin arranged on the surface 11b of the base material 11/12 and supported with generation of the adhesive strength of the base material 11, wherein the skin material 13 is formed stratified from a decoration member 14 having an aerating property and a backing member 15 able to be adhered both to the decoration member 14 and the base material 11, capable of shutting off the heat to be conducted to the decoration member 14 through the base material 11 at the time of blow molding, and having a melting point at 130°C or below. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle floor board disposed on a vehicle such as an automobile, and a terminal processing method thereof.

  As floorboards installed in vehicles such as automobiles, for example, synthetic sports materials such as hardboards and synthetic resin base materials such as blow molding and injection molding can be stored with wet marine sports equipment. There is a resin skin material bonded with an adhesive.

In this type of floorboard, when the base material and the skin material are bonded to each other by the adhesive, the skin material may be peeled off from the base material by being exposed to a high temperature in the vehicle. As a countermeasure, a skin material covering the front surface side of the base material is wound and pasted from the terminal of the base material to the back surface side as it is (for example, Patent Document 1).
JP 2001-18308 A

  However, in such a conventional technique, since it is necessary to wind up the skin material after forming the base material, it takes time and effort to increase the manufacturing cost. In addition, both or one of the corner portions where the wound skin material interferes must be cut out, which requires man-hours for the cut-out, and the manufacturing cost increases accordingly. Further, the notch does not look good and may be peeled off from the notch.

  The present invention has been made by paying attention to such a conventional technique, and provides a vehicle floorboard in which a skin material is reliably supported on a base material and manufacturing costs can be reduced, and a terminal processing method thereof. It is.

  According to the first aspect of the present invention, there is provided a synthetic resin base material capable of generating an adhesive force within a range of 130 to 180 degrees Celsius in a molding die during blow molding, and a surface side of the base material. And a synthetic resin skin material that can be bonded and supported by generation of adhesive strength of the base material, and the skin material can be bonded to a breathable decorative member and both the decorative member and the base material. Thus, the heat transfer to the decorative member by the base material can be cut off during blow molding, and the back member having a melting point of 130 degrees centigrade or less is formed in a layered structure.

A second aspect of the present invention is the vehicle floor board according to the first aspect, wherein the back member has a cushioning property with a basis weight of 80 to 200 g / m ² .

  A third aspect of the present invention is the vehicle floorboard according to the first or second aspect, wherein the decorative member is formed by forming a plurality of fine through-holes so that the back member cannot be seen. It consists of a resin film.

  The invention according to claim 4 is the vehicle floorboard according to claim 3, wherein the synthetic resin film contains 50% or more of a synthetic resin material having a heat resistance of 130 to 180 degrees Celsius. It is characterized by being made.

  A fifth aspect of the present invention is the vehicle floor board according to any one of the first to fourth aspects, wherein the back member includes 20 fibers having a melting point of 130 degrees centigrade or less in a nonwoven fabric. It is characterized by containing -50% or more.

  The invention according to claim 6 is a terminal processing method for a vehicle floor board, wherein at least a support portion capable of supporting an end portion of a synthetic resin base material and a synthetic resin skin material is formed on one side. One side and the other side of a mold for blow molding, in which at least one cut portion that sandwiches the end portion of the base material and the skin material together with the support portion and can cut the end portion is formed on the other side The mold is formed by the support part and the cut part by closing and placing two flat base materials between the side and the base material and one side of the molding die. The part of the base material and the skin material that protrudes further is firmly held, and a blow pressure is applied between the base materials and heated, thereby forming the base material and the adhesive force generated by softening the base material. The skin material is bonded to the base material, and the front part is cut by the cut portion. Characterized by being formed by cutting an adhesive that is not protruding from the base side of the side portion of the skin material.

  Invention of Claim 7 is the terminal processing method of the floor board for vehicles of Claim 6, Comprising: In the corner part of the said base material of the base of the cut part of the other side of the shaping | molding die for blow molding A curved surface is formed.

  According to the first aspect of the present invention, a synthetic resin base material capable of generating an adhesive force within a range of 130 to 180 degrees Celsius in the mold during blow molding, and the surface side of the base material And a synthetic resin skin material that can be adhered and supported by generation of adhesive strength of the base material, and the skin material can be adhesively supported on the base material by the adhesive strength of the base material itself. Due to the adhesive force generated on the base material by heat in the mold, the skin material is reliably supported by the base material even without an adhesive. In addition, the manufacturing cost can be reduced because no effort is required for bonding and supporting. In addition, since the skin material can be bonded to the base material without an adhesive, the generation of organic chemical substances that may be contained in the adhesive can be reliably prevented.

  Furthermore, since the skin material has air permeability, no air accumulation occurs between the skin material and the skin material is reliably supported by the substrate. Furthermore, since the back member constituting the skin material cuts off heat from the base material generated during blow molding to the decorative member that also constitutes the skin material, it is difficult for the back member to peel off from the base material, and from the decorative member. It becomes difficult to peel off.

According to invention of Claim 2, since the said back member has cushioning properties whose areal weight is 80-200 g / m < ² >, even if heat and a pressure are applied by the inner surface of a shaping | molding die, it depends on a back member. By absorbing, the squeezing applied to the decorative member will not be crushed, and the merchantability will increase.

  According to the third aspect of the present invention, the decorative member is made of a synthetic resin film in which a plurality of fine through-holes that do not allow the back member to be seen are formed. No air pocket is generated between the skin and the decorative member of the skin material, and the skin material is reliably supported by the base material.

  According to the invention described in claim 4, since the synthetic resin film contains 50% or more of a synthetic resin material having a heat resistance of 130 to 180 degrees Celsius, the synthetic resin film of the decorative member is glossy. Alternatively, merchantability can be maintained without generating white light.

  According to the invention described in claim 5, since the back member contains 20 to 50% or more of fibers having a melting point of 130 degrees centigrade or less in the nonwoven fabric, occurrence of peeling of the back member fixed to the base material occurs. No merchandise can be maintained.

  According to the invention described in claim 6, at least one support portion capable of supporting the end portion of the synthetic resin base material and the synthetic resin skin material is formed on one side, and the base material and Between the one side and the other side of the mold for blow molding, the end portion of the skin material is sandwiched with the support portion and at least a cut portion capable of cutting the end portion is formed. The base material and the skin material protruded from the molding die by the support portion and the cut portion by arranging and closing the skin material between the two materials and the base material and one side of the molding die. Therefore, the positions of the base material and the skin material are stably supported, and no positional deviation occurs.

  In addition, since the base material is molded by applying blow pressure between the base materials and heated, the skin material is adhered to the base material by the adhesive force generated by the base material. As a result, the adhesive strength between the skin material and the skin material is remarkably increased.

  Furthermore, cutting the portion that protrudes from the base material side on which the skin material is not adhered by the cut portion, in other words, cutting the skin material whose position is relatively variably is more than cutting the base material. Since it is after, the cutting position of the skin material as a product does not shift with respect to the base material, and the merchantability is improved. Moreover, since an excessive pressure is not applied to the terminal part of a skin material, a skin material will not peel from a base material.

  According to the seventh aspect of the present invention, a curved surface is formed at the corner portion of the base material at the base of the cut portion on the other side of the blow mold, so that the vehicle floor is a product. Edges do not occur at the corners of the board, improving safety.

  The object is to provide a vehicle floorboard that can securely support the skin material on the base material and reduce the manufacturing cost, and a terminal treatment method thereof. A synthetic resin base material capable of generating an adhesive force, and a synthetic resin skin material disposed on the surface side of the base material and capable of adhering and supporting by the generation of the adhesive force of the base material, The skin material can be bonded to both a decorative member having air permeability and the decorative member and the base material, and can block heat transfer from the base material to the decorative member at the time of blow molding and have a melting point of 130 degrees centigrade or less. This is realized by forming a layered structure with the back member.

  The best embodiment of the present invention will be described below with reference to FIGS.

  The vehicle floor board 1 of this embodiment is a member that covers the storage portion 6 of the tire 5 formed on the floor 4 of the luggage room 3 formed on the back surface of the rear seat 2, and the marine sports equipment is kept wet. It is made of a synthetic resin material that does not get wet when stored.

  The vehicle floorboard 1 has a plate thickness of 1.5 millimeters obtained by adding mica, talc or the like to polypropylene or the like capable of generating adhesive force in the range of 130 to 180 degrees Celsius in the molding die 20 during blow molding. 2.2 mm synthetic resin base materials 11 and 12 are arranged on the surface 11b side of one of the base materials 11 and 12, and can be bonded and supported by generating an adhesive force of the surface 11b of the base material 11. It is composed of a skin material 13 made of synthetic resin.

  The skin material 13 can be bonded to the decorative member 14 and both the decorative member 14 and the base material 11, can block heat transfer from the base material 11 to the decorative member 14 during blow molding, and has a melting point of Celsius. The back member 15 which is 130 degrees or less is formed in a layered structure.

  The decorative member 14 is provided with a plurality of fine through holes formed by needle hole machining with a diameter of 0.7 mm or less where the back member 15 cannot be seen, thereby ensuring air permeability. The decorative member 14 itself is made of an olefin sheet film having a thickness of 0.5 mm, and has a mixing ratio of 60% PP having a melting point of 130 to 150 degrees Celsius and 40% LDPE having a melting point of 100 to 120 degrees Celsius. And 50% or more of a heat resistant resin having a melting point of 130 to 180 degrees Celsius.

The backing member 15 has a cushioning property, and the nonwoven fabric contains 20 to 50% or more of fibers having a melting point of 130 degrees centigrade or less, PP having a melting point of 150 degrees centigrade to 170 degrees centigrade is 50%, and the melting point is centigrade. The L-PET having a blending ratio of 20% PET having a temperature of 250 to 270 degrees and an L-PET having a melting point of 110 to 130 degrees Celsius of 30%, and having a basis weight of 80 to 200 g / m ² .

  Next, a terminal processing method for a vehicle floor board will be described.

  The decorative member 14 of the skin material 13 is formed into a sheet shape by calendar roll processing, and the embossed drawing process is performed on the decorative member 14 and the back member 15 is attached.

  Next, the molding die 20 for blow molding is composed of an upper die 21 that is “one side” and a lower die 22 that is “the other side”. The upper die 21 includes at least a support portion 23 and a cavity portion 24 that can support the base material 11 and the end portions 11 a and 13 a of the skin material 13. The lower mold 22 sandwiches the corner portion (end portion) 12b and the end portion 13a of the base material 12 and the skin material 13 together with the support portion 23, and the end portions 11a, 13a and the corner portion (end portion) 12b. The cut part 25 and the cavity part 26 which can be cut | disconnected are formed at least.

  Between the upper mold 21 and the lower mold 22 of the mold 20, two flat base materials 11 and 12 and a skin material between the base 11 and the upper mold 21 side of the mold 20. 13 are overlapped and closed, and the base parts 11 and 12 and the end parts 11a and 13a of the skin material 13 and the corner part (end part) protruded from the mold 20 by the support part 23 and the cut part 25. ) By holding the portion 12b, applying a blow pressure between the base materials 11 and 12, and heating the base materials 11 and 12 into a block shape via the space 27 as shown in FIG. The base material 11 and 12 are molded to form a sealed space that surrounds the space portion 27 by the adhesive force generated by the softening of the base material 11 and 12. The skin material 13 is formed by the cut portion 25. By cutting the end portions 11a and 13a and the corner portion (end portion) 12b protruding from the base material 12 side that is not bonded, the position of the skin material 13 is fixed and the vehicle floor board 1 is fixed. Is formed.

  A curved surface is formed at the corner portion 12b of the base 12 of the base 25a of the cut portion 25 of the lower mold 22 of the mold 20 for blow molding.

  Therefore, according to such a configuration, the base materials 11 and 12 made of synthetic resin capable of generating an adhesive force in the range of 130 degrees Celsius to 180 degrees Celsius in the molding die 20 at the time of blow molding, and the base material 11, The vehicle floor board 1 is formed from the synthetic resin skin material 13 which is disposed on the surface 11b side of one of the 11 and capable of being bonded and supported by the generation of the adhesive force of the base material 11, Since the base material 11 can be adhered and supported by the adhesive force of the base material 11 itself, the skin material 13 can be used as the base material even if the adhesive force generated by melting the base material 11 by the heat of the mold 20 does not have an adhesive. 11 is surely supported.

  In addition, since it does not take time to support the adhesion of the skin material 13 to the base material 11, the manufacturing cost can be reduced. Further, as described above, since the skin material 13 can be bonded to the base material 11 without an adhesive, the generation of organic chemical substances that may be contained in the adhesive can be reliably prevented.

  Further, since the skin material 13 has air permeability, no air pool is generated between the skin material 13 and the skin material 13 is reliably supported by the base material 11. Furthermore, since the back member 15 constituting the skin material 13 cuts off heat from the base material 11 generated during blow molding to the decorative member 14 also constituting the skin material 13, it is difficult for the back member 15 to peel off from the base material 11. In other words, it is difficult for the decorative member 14 to peel off.

Since the backing member 15 has a cushioning property with a basis weight of 80 to 200 g / m ² , the backing member 15 absorbs the heat and pressure even when heat and pressure are applied to the inner surface of the mold 20. Thus, the diaphragm applied to the decorative member 14 is not crushed, and the merchantability is increased.

  Since the decorative member 14 is made of a synthetic resin film in which a plurality of fine through-holes are formed so that the back member 15 is not visible, air is released from the through-holes, so that the decorative member 14 of the base material 11 and the skin material 13 is formed. Thus, no air accumulation occurs between the two and the skin material 13 is reliably supported by the base material 11.

  Since the decorative member 14 of the skin material 13 made of a synthetic resin film contains 50% or more of a synthetic resin material having a heat resistance of 130 to 180 degrees Celsius, the synthetic resin film of the decorative member 14 is glossy or Productivity can be maintained without generating white light or the like.

  Since the back member 15 contains 20 to 50% or more of fibers having a melting point of 130 degrees centigrade or less in the nonwoven fabric, the back member 15 fixed to the base material 11 is not peeled off, and the commercial property can be maintained. become.

  According to the molding method, at least the support portion 23 capable of supporting the end portions 11a and 13a of the synthetic resin base material 11 and the synthetic resin skin material 13 is formed on the upper die 21 side, and the lower die 22 is formed. At least a cut portion 25 that sandwiches the corner portion (end portion) 12b of the base material 12 together with the support portion 23 and can cut the end portions 11a and 13a and the corner portion (end portion) 12b is formed on the side. Between the upper mold 21 side and the lower mold 22 side of the mold 20 for blow molding, between the two flat plate-like base materials 11 and 12 and between the base material 11 and the upper mold 21 side of the mold 20 The base material 11 and 12 and the end portions 11a and 13a of the skin material 13 and the corner portions that protrude from the molding die 20 by the support portion 23 and the cut portion 25 are disposed by overlapping the skin material 13 and closing them. (End) To hold the 12b part The position of the substrate 11 and the skin material 13 is stably supported, so that positional deviation does not occur.

  In addition, by applying a blow pressure between the base materials 11 and 12 and heating, the base materials 11 and 12 are molded, and the skin material 13 is attached to the base by the adhesive force generated by the base materials 11 and 12. Since it adheres to the material 11, the adhesive force of the base material 11 and the skin material 13 will increase remarkably.

  Further, the cut portion 25 cuts the end portions 11a and 13a protruding from the base material 12 side where the skin material 13 is not bonded, in other words, the skin material 13 whose position is relatively variable. Since it is after cutting of the base materials 11 and 12, the cutting position of the skin material 13 as a product does not shift with respect to the base materials 11 and 12, and the merchantability is improved. In addition, since an excessive pressure is not applied to the end portion 13 a of the skin material 13, the skin material 13 does not peel from the base material 11.

  In addition, since a curved surface is formed in the corner portion 12b of the root 25a of the cut portion 25 on the lower mold 22 side of the mold 20 for blow molding, an edge is formed on the vehicle floor board 1 as a product. It does not occur, improving safety.

  In the above description, the bonding between the skin material 13 and the base material 11 has been described as thermal welding, but anchor bonding may be used. In addition, the upper mold 21 and the lower mold 22 of the molding die 20 at the end portion where the skin material 13 and the base materials 11 and 12 are bonded to each other are based on the dimension between the base material 11 and the skin material 13. The back member 15 may be further crushed by narrowing the clearance to the flow-in portion so that a strong pressing force is applied to the end portion 13a.

  Since the position of the corner part (end part) 12b of the base material 12 is stable, the skin material 13 is not a two-layer structure of the decorative member 14 and the back member 15, and the carpet or the like is used as the skin material in the same mold. Also good. Since the molds are the same, the manufacturing cost can be significantly reduced.

The perspective view which shows the luggage room of the state which raised the floor board for vehicles which shows one Example of this invention a little. Sectional drawing along the SA-SA line of FIG. Sectional drawing which shows the shaping | molding die of the board for vehicles of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor board for vehicles 11,12 Base material 11a End part of base material 11b Surface of base material 12b Corner part (end part) of base material
DESCRIPTION OF SYMBOLS 13 Skin material 13a End part of skin material 14 Makeup member 15 Back member 20 Mold for blow molding 21 Upper mold which is “one side” 22 Lower mold which is “other side” 23 Support portion 25 Cut portion 25a Cut portion root

Claims (7)

At the time of blow molding, a synthetic resin base material capable of generating an adhesive force within a range of 130 to 180 degrees Celsius in the mold, and an adhesive force of the base material disposed on the surface side of the base material It consists of a skin material made of synthetic resin that can be bonded and supported by generation,
The skin material can be adhered to both a decorative member having air permeability and both the decorative member and the base material, can block heat transfer from the base material to the decorative member during blow molding, and has a melting point of 130 degrees Celsius. A vehicle floorboard, wherein the vehicle floorboard is structured in a layered manner with a back member which is the following. The vehicle floor board according to claim 1,
The backing member, vehicle floorboard weight per unit area and having a cushioning property is 80 to 200 g / m ^2. The vehicle floor board according to claim 1 or 2,
The vehicle floor board according to claim 1, wherein the decorative member is made of a synthetic resin film in which a plurality of fine through-holes are formed so that the back member cannot be seen. The vehicle floor board according to claim 3,
A floor board for vehicles, wherein the synthetic resin film contains 50% or more of a heat-resistant synthetic resin material having a melting point of 130 to 180 degrees Celsius. The vehicle floor board according to any one of claims 1 to 4,
The floor member for a vehicle according to claim 1, wherein the back member contains 20 to 50% or more of fibers having a melting point of 130 degrees centigrade or less in a nonwoven fabric.   At least one support portion that can support the synthetic resin base material and the end portion of the synthetic resin skin material is formed on one side, and the end portion of the base material and the skin material together with the support portion is formed on the other side. Between one side and the other side of a molding die for blow molding in which at least a cut portion that can be sandwiched and cut at the end portion is formed, two flat base materials and the base material and the molding die The base material and the part of the skin material that protrudes from the molding die by the support part and the cut part are firmly fixed by placing the skin material on the other side and closing the mold, and between the base materials. By applying blow pressure and heating, the base material is molded and the skin material is adhered to the base material by the adhesive force generated by softening the base material, and the skin material is adhered by the cut portion. Cutting the part that protrudes from the base material side that is not done Terminal processing method vehicle floorboard, characterized in that the formed. A terminal processing method for a vehicle floor board according to claim 6,
A terminal processing method for a vehicle floor board, wherein a curved surface is formed at a corner portion of the base material at a base of a cut portion on the other side of a mold for blow molding.

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