JP2005254455A - Car interior trimming laminated base material and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a car interior trimming laminated base material excellent in shape followability, air cutting-off properties and interlaminar adhesion. <P>SOLUTION: The car interior trimming laminated base material is constituted by laminating a film, which is obtained from a resin by compounding polybutyrene terephthalate and a polybutyrene terephthalate copolymer in a ratio of 0/100-90/10 pts.wt., and a polyester nonwoven fabric. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a laminated base material for automobile interior. More specifically, it relates to a polyester-based laminated base material suitable for automobile interior materials used by bonding with a nonwoven fabric, a foam sheet, a skin material, etc., and easily adheres to a base material such as a nonwoven fabric, a foam sheet, a skin material, and has a molding processability. The present invention relates to a laminated base material excellent in air-blocking property, heat resistance, heat insulation, rigidity, sound absorption, and appearance.

  Conventionally, materials having various configurations have been proposed as automotive interior materials typified by automotive ceiling materials, but generally have properties such as sound insulation, heat resistance, heat insulation, high strength, and air blocking properties. What laminated | stacked the base material and the skin material for interiors is used.

  For example, in Patent Document 1, a needle punched nonwoven fabric made of polyester fiber is impregnated with an ethylene / vinyl chloride emulsion binder, and unstretched polypropylene fibers are further accumulated and heat-sealed. An interior material in which a substrate made of a body / polypropylene film is laminated has been proposed.

  Patent Document 2 discloses a three-layer film, that is, a linear low-density polyethylene, a nylon 6/66 copolymer, a laminated film made of linear low-density polyethylene, a skin material made of a polyester-based nonwoven fabric on one side, and the like. There has been proposed an interior material in which a matte product obtained by needle punching glass fiber and thermoplastic fiber on one side is bonded with high-density polyethylene impregnated.

  However, the automotive interior materials described in these documents have insufficient shape following properties when trying to match the shape of the parts and members to which these materials are finally attached, There has been a problem that air containing dust and cigarette smoke is transferred to the vehicle interior space to contaminate the vehicle interior, and the interior material skin is contaminated by the contaminated air.

On the other hand, Patent Document 3 discloses a laminated sheet obtained by laminating a composition comprising polyethylene terephthalate and polybutylene terephthalate on at least one surface of a net-like base fabric obtained by crossing drawn yarns made of polyester for warp and weft. A flexible container obtained by using a container has been proposed. However, if the laminated sheet proposed here is used as it is as a base material for automobile interiors, the shape following property and the ventilation blocking property at the time of processing are insufficient, and the interlayer adhesion of the laminated sheet is insufficient.
JP 63-28640 A JP-A-7-68721 Japanese Patent Laid-Open No. 2003-1773

  Then, an object of this invention is to provide the laminated base material for motor vehicle interiors which is excellent in shape followability, ventilation | gas_flow blocking property, and interlayer adhesion.

  As a result of intensive research aimed at solving the above-mentioned problems, the present inventors can obtain a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer in a ratio of 0/100 parts by weight to 90/10 parts by weight. The present inventors have found that the above problems can be solved by using a laminate formed by laminating a film and a polyester-based nonwoven fabric, and have reached the present invention. That is, the present invention provides an automobile interior comprising a film obtained from a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer in a ratio of 0/100 parts by weight to 90/10 parts by weight and a polyester nonwoven fabric. A laminated base material for use is provided.

  By this invention, the base material which is excellent in the shape followability at the time of a shaping | molding process, ventilation blockage | permeability, and adhesiveness from the film base material for motor vehicle interior is obtained.

  The polybutylene terephthalate used in the present invention is a resin obtained by polycondensation of terephthalic acid or an ester-forming derivative thereof and 1,4-butanediol or an ester-forming derivative thereof. For example, other components may be copolymerized. Examples of the copolymerizable acid component include isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, bis (p-carboxyphenyl) methane, anthracene dicarboxylic acid, 4,4′-diphenyl ether Aromatic dicarboxylic acids such as dicarboxylic acid and 5-sodiumsulfoisophthalic acid, aliphatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid and dodecanedioic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid And alicyclic dicarboxylic acids such as these and ester-forming derivatives thereof. Examples of copolymerizable diol components include aliphatic glycols having 2 to 20 carbon atoms, that is, ethylene glycol, propylene glycol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, decamethylene glycol, and cyclohexanediethylene. Methanol, cyclohexanediol, or the like, or long chain glycols having a molecular weight of 400 to 6000, that is, polyethylene glycol, poly-1,2-propylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, etc., and ester forming properties thereof Derivatives and the like.

  The intrinsic viscosity of the polybutylene terephthalate used in the present invention is not particularly limited, but an o-chlorophenol solution is measured at 25 ° C. in terms of mechanical properties, film-forming properties, shape following property during processing, adhesion, and the like. The intrinsic viscosity is preferably 0.36 to 1.80 dl / g, particularly preferably in the range of 0.80 to 1.60 dl / g.

  The polybutylene terephthalate copolymer used in the present invention is mainly composed of terephthalic acid or an ester-forming derivative thereof and 1,4-butanediol or an ester-forming derivative thereof, and includes a terephthalic acid component and / or 1 , 4-butanediol component refers to a resin obtained by copolymerization by replacing 5 mol% or more and less than 50 mol% with other polymerizable components. Specifically, it refers to a copolymer obtained by copolymerizing the following components with polybutylene terephthalate. Examples of copolymerizable acid components include isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, bis (p-carboxyphenyl) methane, anthracene dicarboxylic acid, and 4,4′-diphenyl ether. Aromatic dicarboxylic acids such as dicarboxylic acid and 5-sodiumsulfoisophthalic acid, aliphatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid and dodecanedioic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid And alicyclic dicarboxylic acids such as these and ester-forming derivatives thereof. Examples of copolymerizable diol components include aliphatic glycols having 2 to 20 carbon atoms, that is, ethylene glycol, propylene glycol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, decamethylene glycol, and cyclohexanediethylene. Methanol, cyclohexanediol, or the like, or long chain glycols having a molecular weight of 400 to 6000, that is, polyethylene glycol, poly-1,2-propylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, etc., and ester forming properties thereof Derivatives and the like. Among these copolymer components, isophthalic acid, dodecanedioic acid, and polytetramethylene glycol are particularly preferable.

  The intrinsic viscosity of the polybutylene terephthalate copolymer used in the present invention is not particularly limited, but 25 o-chlorophenol solution is used from the viewpoints of mechanical properties, film forming properties, shape following property during processing, adhesion, and the like. The intrinsic viscosity when measured at ° C is preferably 0.36 to 1.80 dl / g, particularly preferably in the range of 0.80 to 1.60 dl / g.

  The polybutylene terephthalate and polybutylene terephthalate copolymer used in the present invention are glass fiber, carbon fiber, potassium titanate whisker, zinc oxide whisker, aluminum borate whisker, aramid fiber, and alumina fiber as long as the effects of the present invention are not impaired. , Silicon carbide fiber, ceramic fiber, asbestos fiber, stone fiber, metal filler and other fibrous fillers, wollastonite, zeolite, sericite, kaolin, mica, clay, pyrophyllite, bentonite, asbestos, talc, alumina silicate Silicates such as alumina, silica, magnesium oxide, zirconium oxide, titanium oxide, iron oxide and other metal oxides, carbonates such as calcium carbonate, magnesium carbonate and dolomite, sulfates such as calcium sulfate and barium sulfate, water May include hydroxides such as magnesium hydroxide, calcium hydroxide, aluminum hydroxide, glass flakes, glass beads, ceramic beads, non-fibrous fillers such as boron nitride, silicon carbide and silica, and these fillers include It may be hollow. A plurality of these fillers can be used in combination. Silica particles are preferred for the purpose of expressing the rigidity of the resulting film, adhesion to the nonwoven fabric, air-blocking property, shape following property during molding, slipperiness, and the like in a balanced manner. The addition amount is 0.005 to 1 part by weight, preferably 0.01 to 0.75 part by weight, more preferably 0.02 to 0 part by weight based on 100 parts by weight of the resin having butylene terephthalate as the main structural unit. .5 parts by weight. As a silica particle diameter to be used, although it is 0.1-10 micrometers normally, Preferably it is 0.5-7.5 micrometers, More preferably, it is 1-5 micrometers.

  In addition, these fibrous / non-fibrous inorganic fillers may be treated simultaneously or preliminarily with a coupling agent such as an isocyanate compound, an organic silane compound, an organic titanate compound, an organic borane compound, and an epoxy compound. The use is preferable in terms of obtaining superior mechanical properties and appearance.

  Furthermore, the resin having butylene terephthalate as the main structural unit used in the present invention is not limited to the purpose of the present invention, and other polyester resins and other polymers, additives, crystal nuclei depending on required properties. It is also possible to add a stabilizer such as an agent, a heat-resistant agent and an ultraviolet absorber, a flame retardant, an antistatic agent, a plasticizer, a lubricant, a colorant, and a coupling agent.

  There is no particular limitation as a method for obtaining a film obtained from a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer used in the present invention in a ratio of 0/100 parts by weight to 90/10 parts by weight, A known method such as a T die casting method or an inflation method can be used.

  The film may be unstretched or stretched, but an unstretched film is preferred from the viewpoint of shape followability during processing.

  Moreover, there is no restriction | limiting in particular as thickness of this film, However, It is preferable that it is 5-200 micrometers from the point of the favorable shape followability at the time of a process, and ventilation | gas_blocking property, and it is especially preferable that it is 10-150 micrometers.

  In order to further improve the air barrier property of a film obtained from a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer used in the present invention in a ratio of 0/100 parts by weight to 90/10 parts by weight, A metal and / or metal compound may be deposited on one side of the film. Although there is no restriction | limiting in particular as a method to give a vapor deposition layer, Well-known methods, such as vacuum vapor deposition, EB vapor deposition method, sputtering, ion plating, plasma CVD, can be used. Among these, the vacuum vapor deposition method is most preferable from the viewpoint of productivity and cost. In order to improve the adhesion between the film and a deposited film such as a deposited metal and / or metal oxide, the surface of the film may be pretreated by a method such as applying a corona discharge treatment or an anchor coating agent in advance. This is the preferred method. Examples of the metal and / or metal oxide deposited on the film include aluminum, aluminum oxide, silicon oxide and the like, and aluminum is most preferable. The thickness of the obtained vapor deposition layer is preferably 10 to 100 nm, more preferably 15 to 90 nm, and still more preferably 20 to 80 nm. This is because when the film thickness is 10 nm or more, a uniform vapor deposition film thickness is easily obtained, and when it is 100 nm or less, defects such as cracks hardly occur in the vapor deposition layer, and further improvement in the air blocking property can be expected.

  The effect of the present invention is applied to a part or the entire surface of a film obtained from a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer used in the present invention in a ratio of 0/100 parts by weight to 90/10 parts by weight. Other thermoplastic resin films may be laminated as long as the above is not impaired.

The polyester-based nonwoven fabric used in the present invention is a nonwoven fabric made using a polyester-based resin, and is obtained by processing polyester-based fibers into a sheet shape.
There is no restriction | limiting in particular as polyester used here, The polyester obtained by condensation of a dicarboxylic acid component and a diol component can be used, and even if it is a copolymer, it may be a mixture of 2 or more types of polyester. Examples of the dicarboxylic acid component used here include terephthalic acid, isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, bis (p-carboxyphenyl) methane, anthracene dicarboxylic acid, 4 , 4'-diphenyl ether dicarboxylic acid, aromatic dicarboxylic acid such as 5-sodium sulfoisophthalic acid, aliphatic dicarboxylic acid such as adipic acid, sebacic acid, azelaic acid, dodecanedioic acid, 1,3-cyclohexanedicarboxylic acid, 1, Examples include alicyclic dicarboxylic acids such as 4-cyclohexanedicarboxylic acid and ester-forming derivatives thereof. Examples of the diol component include ethylene glycol, propylene glycol, 1,4-butanediol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, decamethylene glycol, cyclohexanedimethanol, cyclohexanediol, Alternatively, long chain glycols having a molecular weight of 400 to 6000, that is, polyethylene glycol, poly-1,2-propylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, and the like, and ester-forming derivatives thereof can be used. Among these polyesters, polyethylene terephthalate, polyethylene isophthalate, polybutylene terephthalate, copolymers thereof, or mixtures thereof are particularly preferable.

  There is no restriction | limiting in particular in the manufacturing method of the polyester-type nonwoven fabric used by this invention, the chemical bond method which couple | bonds fibers using an adhesive agent, the thermal bond method which heat-seals using a core-sheath composite fiber, and physical-fibers Needle punching method that entangles the fibers, a spunbond method in which melt-spun filament groups are collected to form a fiber sheet and immediately bonded with a hot roll, a melt-blow method in which high-temperature air is spun in melt spinning and collected in a collection net, etc. Can be adopted.

  A laminate for automobile interiors, which is obtained by laminating a polyester-based nonwoven fabric with a film obtained from a resin obtained by blending the polybutylene terephthalate and the polybutylene terephthalate copolymer of the present invention in a ratio of 0/100 to 90/10 parts by weight. There is no restriction | limiting in particular as a method of manufacturing a base material. For example, a film obtained from a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer at a ratio of 0/100 parts by weight to 90/10 parts by weight and a polyester nonwoven fabric are prepared separately, It may be laminated by bonding with or without an adhesive. Alternatively, a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer in a ratio of 0/100 parts by weight to 90/10 parts by weight on a polyester nonwoven fabric may be melt extruded to form a film, and at the same time, a laminate may be used. . The latter method is preferable from the viewpoint of production efficiency and adhesiveness.

  A laminate for automobile interiors, which is obtained by laminating a polyester-based nonwoven fabric with a film obtained from a resin obtained by blending the polybutylene terephthalate and the polybutylene terephthalate copolymer of the present invention in a ratio of 0/100 to 90/10 parts by weight. An automotive inner layer material can be prepared by further laminating a decorative skin material, a heat insulating / sound insulating foam material, or the like on the base material. The automobile inner layer material obtained in this way is excellent in shape followability, ventilation barrier property, and interlayer adhesion.

  EXAMPLES Hereinafter, although this invention is demonstrated concretely using an Example, this invention is not limited at all by these Examples.

[Intrinsic viscosity]
It measured at 25 degreeC using the o-chlorophenol solution.

[Melting point]
Using a differential scanning calorimeter (DSC), the peak temperature of the endothermic peak that appears when the temperature was raised at 20 ° C./min was taken as the melting point.

[Shape following]
A 100 mm × 100 mm square laminate was set in the mold shown in FIG. 1 and was press-molded at 80 ° C. to evaluate whether it could be molded without trouble such as tearing. In addition, after molding, the mold was allowed to stand for 24 hours in an environment of 23 ° C./50% RH, and then the angle formed between the bottom surface and the side surface of the molded product was measured.

[Ventilation barrier]
The moisture permeability was measured in accordance with JIS K7129 to obtain a ventilation barrier. A moisture permeability of 100 g / m 2 · day or less was evaluated as “◯”, and 100 g / m 2 · day or more as “×”.

[Adhesion]
The laminate was cut into a size of 150 × 15 mm, one end in the longitudinal direction was peeled off by 75 mm, and the strength at which the laminate was peeled off was measured by pulling them up and down using a tensile tester.

(Reference Example 1)
Production of non-woven fabric made of PET (polyethylene terephthalate) PET (o-chlorophenol solution measured at 25 ° C. heated to 320 ° C. using a melt blowing apparatus having a gas injection gap of 0.3 mm has an intrinsic viscosity of 1.0. ) Is extruded at a rate of about 0.8 g / min per 10 mm of the base width using a melt blower having 8 orifices per 10 mm of the base width and an injection gap of 0.31 mm, and supplied to the injection unit at about 0.2 MPa-G. The air was pulled with 300 ° C air. The melt blown fiber having an average diameter of 3 μm produced in this way was repaired on a belt placed at a position 0.5 m away from the jetting device to prepare a nonwoven fabric. This nonwoven fabric had a thickness of 5 mm and a weight of 250 g / m ² .

(Reference Example 2)
Manufacture of PP (polypropylene) nonwoven fabric PP melted at 300 ° C. using a melt blow apparatus having a gas injection gap of 0.3 mm (melt flow rate measured at 230 ° C. is 300), 8 orifices per 10 mm of base width And a melt blower having a jetting gap of 0.31 mm, extruded at a speed of about 0.8 g / min per 10 mm of the base width, and pulled by air at 280 ° C. supplied to the jetting unit at about 0.2 MPa-G. The melt blown fiber having an average diameter of 3 μm produced in this way was repaired on a belt placed at a position 0.5 m away from the jetting device to prepare a nonwoven fabric. This nonwoven fabric had a thickness of 5 mm and a weight of 120 g / m ² .

(Example 1)
Using the nonwoven fabric prepared in Reference Example 1, a copolymerized PBT resin ("Toraycon" 1200D manufactured by Toray Industries, Inc., aliphatic dicarboxylic acid copolymer, intrinsic viscosity 1.2, melting point 205 was formed on this nonwoven fabric by extrusion lamination. ° C) was melt extruded under the following conditions. A laminate comprising a 30 μm thick film and the PET nonwoven fabric prepared in Reference Example 1 was obtained. The evaluation results of the obtained laminate are shown in Table 1.

Extrusion conditions Extruder: 40 mm single screw extruder, L / D = 26,
Screw: Full flight constant pitch (3-zone type)
Compression ratio 3.1
Soybean: Single layer T dice, width 400mm, distance between lips 1mm,
Coat hanger type
Cylinder temperature: 230-245 ° C
Cast drum temperature: 15 ° C.

(Example 2)
A laminate was prepared in the same manner as in Example 1, except that Toraycon 1400D (aliphatic dicarboxylic acid copolymer, intrinsic viscosity 1.7, melting point 205 ° C.) manufactured by Toray Industries, Inc. was used as the copolymerized PBT resin. . The evaluation results of the obtained laminate are shown in Table 1.

(Example 3)
A laminate was prepared in the same manner as in Example 1, except that Toraycon 1200E (aromatic dicarboxylic acid copolymer, intrinsic viscosity 1.2, melting point 207 ° C.) manufactured by Toray Industries, Inc. was used as the copolymerized PBT resin. . The evaluation results of the obtained laminate are shown in Table 1.

Example 4
The same procedure as in Example 1 was used, except that a copolymerized PBT (inherent viscosity: 1.0, melting point: 220 ° C.) obtained by copolymerizing 5 mol% of polytetramethylene glycol having a number average molecular weight of 1000 with PBT was used as the copolymerized PBT resin. A laminate was created. The evaluation results of the obtained laminate are shown in Table 1.

(Example 5)
As a copolymer PBT resin, PBT resin ("Toraycon" 1400S manufactured by Toray Industries, Inc., intrinsic viscosity 1.7, melting point 225 ° C) and copolymer PBT resin ("Toraycon" 1400D manufactured by Toray Industries, Inc.) are 50 to 50 weights. A laminate was prepared in the same manner as in Example 1 except that a material that was pellet blended at a ratio of parts was used. The evaluation results of the obtained laminate are shown in Table 1.

(Example 6)
As a copolymerized PBT resin, 0.03 part of silica particles “Mizukasil” C-002 (manufactured by Mizusawa Chemical Co., Ltd.) is added to 100 parts by weight of PBT resin (Toraycon “1400D” manufactured by Toray Industries, Inc.) at 250 ° C. using a 30 mmφ twin screw extruder. A laminate was prepared in the same manner as in Example 1 except that the resin obtained by melt kneading and pelletizing the strand was used. The evaluation results of the obtained laminate are shown in Table 1.

(Comparative Example 1)
A laminate was prepared in the same manner as in Example 1 except that PBT resin (Toraycon 1200S manufactured by Toray Industries, Inc.) was used instead of copolymerized PBT. Table 2 shows the evaluation results of the obtained laminate.

(Comparative Example 2)
A laminate was prepared in the same manner as in Example 1 except that PET resin (J125 manufactured by Mitsui Chemicals) was used instead of the copolymerized PBT. Table 2 shows the evaluation results of the obtained laminate.

(Comparative Example 3)
Using a multi-layer extruder having a five-layer die, linear low density polyethylene (LLDPE) (Mitsui Chemicals, Ultzekkusu 1020L), modified linear low density polyethylene (modified LLDPE) (Mitsui Chemicals, Admer NF300), nylon 6 resin (N6) (Amilan CM1021TC, manufactured by Toray Industries, Inc.) was obtained as a multilayer film comprising LLDPE / modified LLDPE / N6 / modified LLDPE / LLDPE = 21/4/10/4/21 μm.

  A laminate was prepared in the same manner as in Example 1 except that the multilayer film was used in place of the copolymerized PBT. Table 2 shows the evaluation results of the obtained laminate.

In addition, the extrusion conditions of various materials are as follows.
Extrusion conditions Extruder: 40 mm single screw extruder, L / D = 26,
Screw: Full flight constant pitch (3-zone type)
Compression ratio 3.1
Soybean: Single layer T dice, width 400mm, distance between lips 1mm,
Coat hanger type
Cylinder temperature: LLDPE 190-200 ° C
Modified LLDPE 190-200 ° C
N6 230-245 ° C
Cast drum temperature: 15 ° C.

(Comparative Example 4)
A laminate was prepared in the same manner as in Example 1 except that the PP nonwoven fabric prepared in Reference Example 2 was used instead of the PET nonwoven fabric prepared in Reference Example 1. Table 2 shows the evaluation results of the obtained laminate.

  From Examples 1 to 4, it can be seen that the laminate base material composed of a film made of a copolymer resin mainly composed of butylene terephthalate and a polyester-based non-woven fabric is excellent in shape followability, ventilation barrier property and adhesion.

From Example 5, a laminate base material made of a polyester-based nonwoven fabric and a film made of a resin in which a PBT resin is blended with a copolymer resin containing butylene terephthalate as a main constituent unit is excellent in shape followability, ventilation barrier property, and adhesion. I understand that.

From Example 6, a laminate base material made of a polyester-based nonwoven fabric and a film made of a resin in which inorganic particles are blended with a copolymer resin containing butylene terephthalate as a main constituent unit is excellent in shape followability, air permeability blocking, and adhesion. I understand that.

  From the comparative example 1, it turns out that the laminated body base material which consists of the film which consists of PBT resin, and a polyester-type nonwoven fabric is inferior to adhesiveness.

  From Comparative Example 2, it can be seen that the multilayer base material made of PE / N6 / PE and the laminate base material made of polyester nonwoven fabric are inferior in shape followability and adhesion.

  From Comparative Example 3, it can be seen that a laminate base material composed of a film made of a copolymer resin mainly composed of butylene terephthalate and a polyethylene nonwoven fabric is inferior in shape followability and adhesiveness.

Claims (5)

A laminated base material for automobile interiors, in which a film obtained from a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer in a weight ratio of 0/100 to 90/10 parts by weight and a polyester nonwoven fabric are laminated. . The laminated group for automobile interior according to claim 1, wherein the copolymer unit in the polybutylene terephthalate copolymer is at least one selected from butylene isophthalate, butylene dodecanedioate, and polytetramethyleneoxyterephthalate. Wood. The film obtained from a resin obtained by blending the polybutylene terephthalate and the polybutylene terephthalate copolymer at a ratio of 0/100 to 90/10 parts by weight contains silica particles. 2. The laminated substrate for automobile interior according to any one of the above. The polyester forming the polyester-based nonwoven fabric is at least one selected from a resin having ethylene terephthalate as a main constituent unit, a resin having butylene terephthalate as a main constituent unit, and a mixture of these resins. The laminated base material for automobile interior according to any one of 1 to 3. An automobile characterized by melt extrusion of a resin obtained by blending polybutylene terephthalate and polybutylene terephthalate copolymer at a ratio of 0/100 to 90/10 parts by weight into a film and simultaneously laminating the polyester nonwoven fabric. A method for producing a laminated base material for interior use.