JP2000117865A - Continuous inorganic fiber-reinforced sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a mesh shift in a fiber-reinforced sheet from occurring and improve the bending resistance by arranging linear materials obtained by applying a resin skin layer on the surface of a reinforced core layer consisting of inorganic fibers, drawn in order in the longer direction, which is impregnated with a thermoplastic resin, in a meshlike fashion, and thermally fusion-bonding the linear materials and further, laminating a thermoplastic resin sheet on the fusion-bonded linear materials. SOLUTION: This continuous inorganic fiber-reinforced sheet 20 is obtained by laminating a thermoplastic resin sheet 16 on one of the faces or both faces of a reticular structure with numerous meshes 14 formed by arranging plural freely foldable linear materials 10 in a meshlike pattern and firmly bonding each of the intersections of the linear materials 10. The linear materials 10 comprise numerous continuous inorganic fibers 2, drawn in order in the one direction, which are impregnated with a thermoplastic resin. A tapelike or a linear reinforced core layer is formed of the continuous inorganic fibers 2 and the thermoplastic resin. Further, a resin skin material layer is applied to the surface of the reinforced core layer and thus the linear material 10 is formed which is, as a whole, of a tapelike or a threadlike shape long in the one direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous inorganic fiber reinforced sheet, and more particularly to a continuous inorganic fiber reinforced sheet suitable for a waterproof sheet, a roofing material, a floor material, a ceiling material, a mortar reinforcing material (backup base material), and the like. .

[0002]

2. Description of the Related Art Conventionally, as a sheet and a composite plate using a mesh as a reinforcing material, a netted glass plate, a synthetic resin plate containing a glass fiber net, a synthetic resin plate containing a metal wire net, and the like are well known. A knotted net that connects the intersections of the nets has a disadvantage that when sandwiched between synthetic resin plates, air bubbles remain at the knotted portions and the strength of the netted synthetic resin plate is likely to be reduced. In addition, the knotless network has a problem in that the intersection portion has a displaced poor appearance.

[0003]

Problems to be Solved by the Invention
In the publication, a fiber-reinforced resin laminate formed by arranging a thermoplastic resin tape reinforced with continuous inorganic fibers in a net shape and laminating the tape with a thermoplastic resin sheet or film is described. It is very difficult to fuse even if fusion is attempted. Even if it can be heat-fused, the strength of the net intersection is weak, and even if a laminated molded article using the net as a reinforcing material is made, there is a problem that the intersection peeling occurs, the misalignment easily occurs, and the appearance deteriorates. .

[0004] The same applies to the case where a polypropylene resin is used as a matrix. The fusion strength at the intersections is weak, and misalignment is apt to occur. A laminated molded article using this as a reinforcing material impairs the appearance and causes uneven strength. Further, a tape made of a thermoplastic resin reinforced with continuous inorganic fibers is further inferior in bending resistance, and has a drawback that strength is reduced by bending at a corner portion or bending during handling. Particularly, if the regularity of the reinforcing materials arranged in a lattice pattern is disturbed due to misregistration, the appearance of the sheet is deteriorated, and the commercial value is lost. Moreover, these tendencies become more remarkable as the content of the continuous inorganic fibers increases.

[0005] Accordingly, an object of the present invention is to provide a continuous inorganic fiber reinforced sheet which effectively prevents misalignment, has improved appearance and improved bending resistance.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, a reinforced core material obtained by impregnating continuous inorganic fibers 2 aligned in the longitudinal direction with a thermoplastic resin 4. Continuous inorganic fibers reinforced by arranging and linearly fusing the linear objects 10 each having the surface of the layer 6 covered with the resin skin material layer 8 in a mesh shape, and laminating a thermoplastic resin sheet 16 on one or both surfaces thereof. It has been found that the sheet achieves the object, and the present invention has been achieved.

That is, even if a tape obtained by impregnating a continuous inorganic fiber with a thermoplastic resin is simply arranged in a mesh form, and the intersections are heat-sealed to form a net, the inorganic fiber that does not melt is also present on the tape surface. Focusing on the fact that it is present at the same concentration as the central part and hinders thermal fusion and is difficult to fuse, the resin is coated on the surface of a thermoplastic resin tape reinforced with continuous inorganic fibers and thermally fused. By improving the interstitial properties, the intersection strength is effectively prevented to prevent misalignment, and the appearance and bending resistance are improved by laminating a thermoplastic resin sheet on one or both sides of the obtained net-like structure. To obtain a continuous inorganic fiber reinforced sheet.

[0008]

FIG. 1 is a perspective view showing an example of a continuous inorganic fiber reinforced sheet of the present invention. In FIG. 1, a continuous inorganic fiber reinforced sheet 20 of the present invention has a plurality of bendable linear objects (including a tape and a single net yarn) 10 arranged in a mesh pattern (as shown in FIG. The thermoplastic resin sheet 16 is laminated on one side or both sides (one side in FIG. 1) of a network structure in which a number of meshes 14 are formed by fixing the intersections 12 of the linear object 10. is there.

FIG. 2 is a perspective view showing an example of the linear object 10. As shown in FIG. In the linear object 10, the thermoplastic resin 4 that bonds the continuous inorganic fibers 2 to each other is attached to a large number of continuous inorganic fibers 2 aligned in one direction (in FIG. 2, aligned in the arrow X direction). The reinforced core layer 6 having various shapes such as a tape shape and a linear shape is formed from the continuous inorganic fibers 2 and the thermoplastic resin 4 which are impregnated. The cross-sectional shape is flat,
Although not particularly limited, such as a circular shape, a flat shape as shown in FIG. 2 is preferable because the contact area when formed into a mesh increases and the adhesiveness is improved.

The surface of the reinforced core material layer 6 is covered with a resin skin material layer 8, and is a tape-like or thread-like linear material 10 which is long in one direction (the direction of arrow X in FIG. 2) as a whole.
To form In FIG. 2, the resin skin material layer 8 covers the entire outer periphery of the reinforced core material layer 6, but is not necessarily required to cover the entire outer periphery. For example, when the cross section is flat, only the upper and lower surfaces may be coated.

As the thermoplastic resin 4 which is a constituent component of the reinforcing core material layer 6, any kind of thermoplastic resin which can be impregnated into the continuous inorganic fiber reinforcing material 2 can be used.

The following can be exemplified as the thermoplastic resin 4 described above.

Poly-α-olefin resin: polyethylene resin, polypropylene resin, poly-1-butene resin,
Poly-4-methyl-1-pentene resin, propylene-ethylene copolymer resin, and propylene-1-butene copolymer resin ・ Polyester resin: polyethylene terephthalate, polybutylene terephthalate, and polyethylene terephthalate isophthalate ・ Polyamide resin (nylon ): Polyamide-6, polyamide-7, polyamide-66, polyamide-610,
Polyamide-11 and polyamide-12; polyacetal polyurethane; a composition comprising two or more of the above resins; and a polymer alloy comprising two or more of the above resins.

Among these thermoplastic resins, crystalline polyolefins, particularly crystalline polypropylene, are preferred from the viewpoints of versatility and mechanical strength.

The thermoplastic resin does not have a reactive functional group or a polar functional group for imparting interfacial adhesion to inorganic fibers, particularly glass fibers, at the molecular end groups, like polyolefin (poly-α-olefin). In such a case, measures such as modifying the resin with a derivative such as an unsaturated acid or an acid anhydride thereof and / or blending a required amount of the polymer modified with the unsaturated acid into the unmodified resin may be applied. It is effective for improving interfacial adhesion.

The unsaturated acid which can be used as the above modifier is
Usually, aliphatic unsaturated acids are preferred, and examples of such unsaturated acids include one or more selected from acrylic acid, methacrylic acid, maleic acid, citraconic acid and mesaconic acid. Particularly preferred is maleic acid.

Derivatives such as unsaturated acid anhydrides which can be used as modifiers are usually preferably aliphatic unsaturated acid anhydrides, and are selected from maleic anhydride and itaconic anhydride.
More than one species can be exemplified. Particularly preferred is maleic anhydride (maleic anhydride).

In the present invention, when modifying the thermoplastic resin using such a modifier, an organic peroxide may be used as necessary. Organic peroxides include 2,5-dimethyl (t-butylperoxy) hexane, 1,3-bis (t-
(Butyl-oxyisopropyl) benzene, dicumyl peroxide, benzoyl peroxide and the like.

As the thermoplastic resin 4 as a component of the reinforcing core layer 6, an unmodified resin and a modified resin may be used alone as described above, or at least two of them may be used in combination. It may be used as a resin composition. The amount of the modified resin in the thermoplastic resin composition is preferably an amount sufficient for firmly bonding the continuous inorganic fiber reinforcing material 2 and the thermoplastic resin.

The modified resin and the modified resin composition are mixed, for example, by mixing a thermoplastic resin, a modifier, and an organic peroxide by a mixing means such as a Henschel mixer (trade name) and then extruding the mixture. The melt-kneaded product is supplied to a melter and then kneaded, and then the melt-kneaded product is extruded to produce a mixture.

The thermoplastic resin 4 constituting the reinforcing core material layer 6 may contain one or more kinds of the following additives as required.

Antioxidants, heat stabilizers, ultraviolet absorbers, resinous destruction inhibitors, antistatic agents, lubricants, plasticizers,
Release agents, flame retardants (flame retardants), flame retardant aids and crystallization accelerators (nucleating agents; crystallization agents), dyes and pigments.

These additives may be used in a state of being previously blended with the above-mentioned thermoplastic resin serving as a matrix.
It may be used in the form of a master batch.

In the present invention, as the continuous inorganic fiber 2 which is a component of the reinforcing core material layer 6, a fiber produced from various inorganic fibers can be used. As the inorganic fiber, for example, glass fiber, rock wool (rock wool), asbestos, quartz fiber, metal fiber, whisker (whisker), and carbon fiber are preferable.

Of these fibers, glass fibers are usually preferred in view of their properties and availability. As the glass fiber, hard glass fiber is preferable, and E glass fiber which is non-alkali glass is particularly preferable. As this glass fiber, a commercially available glass roving that is usually manufactured for resin reinforcement can be used. This glass roving generally has an average fiber diameter of 4 to 30 μm and a number of filament bundles of 400 to 1000.
0, Tex number 300 ~ 20000,
When used in the present invention, the average fiber diameter is 9 to 23 μm.
Are preferred. If necessary, these glass rovings can be combined and used.

The continuous inorganic fiber 2 is preferably surface-treated with a surface treatment agent such as a silane coupling agent, a titanate coupling agent, a boron coupling agent, and an aluminate coupling agent. When the surface treatment is performed on the continuous inorganic fibers 2, the affinity for the hydrophobic resin such as polypropylene is increased, and the resin such as polypropylene is easily impregnated between the long fiber reinforcing material, especially the opened fiber, and the tensile strength is increased. The strength is remarkably improved.

The above continuous inorganic fibers 2 may be used alone or in combination of two or more.

As a method of manufacturing the reinforcing core material layer 6 using the thermoplastic resin 4 and the continuous inorganic fibers 2, the molten thermoplastic resin 4 in the continuous inorganic fibers 2 arranged substantially in parallel is used. Can be used. When impregnating the continuous inorganic fiber 2 with a resin, the continuous inorganic fiber 2 is spread as uniformly as possible on a plane, and the spread is uniformly impregnated with the resin.
Can be improved in mechanical strength.

The method of impregnating the resin into the continuous inorganic fibers 2 may be any method as long as it can impregnate the resin into the continuous inorganic fibers. For example, as this impregnation method, JP-B-63-37694, JP-B-4-4188.
No. 6, JP-A-61-229534 and the like.

This kind of reinforcing core layer 6 is obtained by, for example, uniformly opening continuous inorganic fibers such as roving on a flat surface.
The continuous inorganic fibers can be uniformly impregnated with the resin melt-kneaded in the extruder to be formed.

The content of the continuous inorganic fibers 2 in the reinforcing core material layer 6 is preferably from 10 to 80% by weight, more preferably from 30 to 70% by weight.
Is desirable. When the content is within the above range, the continuous inorganic fibers 2 and the resin 4 are sufficiently in contact with each other, the resin is sufficiently impregnated with the continuous inorganic fiber reinforcing material, and the continuous inorganic fibers 2 are integrated with each other by the resin 4. And a reinforcing effect such as tensile strength is sufficiently exhibited.

The resin skin layer 8 of the present invention is a layer formed of a resin having a predetermined property on the surface of the reinforced core layer 6. The resin (coating resin) constituting the resin skin material layer 8 is:
A different kind of resin from the resin 4 constituting the reinforcing core layer 6 may be used, but a resin of the same kind as the resin 4 forming the reinforcing core layer 6 is preferable. Alternatively, a material having compatibility with the resin constituting the reinforcing core layer 6 is preferable. When these resins are the same type of resin or have compatibility with each other, a high bonding force is formed at the interface between the resin skin material layer 10 and the reinforced core material layer 6, and a sheet is formed on the mesh structure. Even if 16 are laminated, it becomes difficult to peel off.

Further, it is preferable that the coating resin be a resin having a lower melting point than the resin 4 constituting the reinforced core layer 6. By welding both at a temperature lower than the resin 4 constituting the reinforcing core layer 6 and at a temperature at which the coating resin melts, the reinforcing core layer 6
Does not melt and deform to deteriorate the appearance, and furthermore, the bending resistance can be greatly improved.

The resin constituting the resin skin material layer 8 includes:
The same resins as those described for the resin 4 constituting the reinforced core layer 6 can be exemplified. Moreover, the composition which consists of 2 or more types of resin illustrated, and the polymer alloy which consists of 2 or more types of resins may be sufficient. From the viewpoints of versatility and mechanical strength, crystalline polyolefins, particularly crystalline polypropylene, are preferred.

In the case where the resin does not have a reactive functional group or a polar functional group for imparting interfacial adhesion to inorganic fibers, particularly glass fibers, at the molecular terminal group, such as polyolefin (poly-α-olefin), It is useful to take measures such as modifying the resin with a derivative such as an unsaturated acid or an acid anhydride thereof, and / or blending a required amount of the polymer modified with the unsaturated acid into the unmodified resin. It is.

As the above-mentioned modifier, the reinforcing core material layer 6
And derivatives of the same unsaturated acids and unsaturated acid anhydrides as the modifiers exemplified for the resin 4 constituting the above. Further, similarly to the above, when using a modifier, an organic peroxide may be used in combination as necessary.

As the thermoplastic resin forming the resin-made skin material layer 8, the above-mentioned non-modified resin and modified resin may be used alone, or at least two of them may be used in combination to form a resin composition. May be used.

The thermoplastic resin forming the resin skin material layer 8 may contain one or more kinds of various additives as required. As the additives, as described above, antioxidants, heat stabilizers, ultraviolet absorbers, resinous destruction inhibitors,
Examples include antistatic agents, lubricants, plasticizers, mold release agents, flame retardants (flame retardants), flame retardant aids and crystallization accelerators (nucleating agents, crystallization agents), dyes, pigments, and the like. . These additives may be used in a form previously mixed with the above-mentioned crystalline thermoplastic resin serving as a matrix, or may be used in the form of a master batch.

The resin skin layer 8 is formed on the surface of the reinforced core layer 6. The average thickness of the formed resin skin material layer 8 is preferably 0.1 to 1.2 mm, more preferably 0.2 to 1.0 mm, and particularly preferably 0.3 to 0.8 m.
m. Within this range, sufficient bending strength is exhibited in accordance with the amount of material used, and handleability is also good.

As a method of coating the resin-made skin material layer 8 on the surface of the reinforced core material layer 6, for example, the resin is formed into a film in advance, and this film is laminated on the surface of the reinforced core material layer 6. A method, a method of coating the surface of the reinforced core material layer 6 with a resin in a molten state, and the like, can be used, whereby the linear object 10 of the present invention can be manufactured.

When the resin-made skin material layer 8 is formed by laminating, for example, first, a resin mixed with a modifier or the like is supplied to an extruder and melt-kneaded, if necessary, to form a film. To form a film. Separately, for example, the continuous inorganic fiber 2 is impregnated with the molten resin 4 to form the reinforced core layer 6. Then, the reinforced core material layer 6 is laminated in a semi-molten state with a film wound up in advance.

When bonding the reinforcing core layer 6 and the above-mentioned film, the reinforcing core layer 6 does not necessarily have to be in a semi-molten state. After the reinforcing core layer 6 is cooled and solidified, an adhesive is used. May be attached to the film.

When the resin skin layer 8 is formed by coating, the resin is extruded onto the surface of the reinforced core layer 6 while the reinforced core layer 6 is kept in a semi-molten state. Alternatively, after cooling and solidifying the reinforced core layer 6, the surface of the reinforced core layer 6 may be coated.

In the present invention, a linear material obtained by coating the surface of the reinforced core material layer with a resin skin material layer is arranged in a mesh pattern.
Heat-fused (the structure thus obtained is sometimes referred to as a network structure) in this specification, and a thermoplastic resin sheet 16 is laminated on one or both sides thereof to form a continuous sheet of the present invention. An inorganic fiber reinforced sheet 20 is obtained.

Examples of the resin forming the thermoplastic resin sheet 16 include the same resins as those mentioned above as the resin constituting the resin skin material layer. Moreover, the composition which consists of 2 or more types of resin illustrated, and the polymer alloy which consists of 2 or more types of resins may be sufficient. Further, a modifier can be used in the same manner as described above, and if necessary, an organic peroxide may be used in combination. If necessary, one or more kinds of the same various additives as described above can be blended.

The resin forming the thermoplastic resin sheet 16 may be different from the resin forming the skin material layer in the above-mentioned network structure, but may be the same resin as the resin forming the skin material layer or the skin. Those having compatibility with the resin forming the material layer are preferable. When these resins are the same type of resin or have compatibility with each other, the point that a high bonding force is formed at the interface between the skin material layer 8 and the thermoplastic resin sheet 16 and the economical efficiency It is preferable in terms of recycling.

The thermoplastic resin sheet 16 may be any sheet-like material, and examples thereof include a sheet and a film. Thermoplastic resin sheet 16 used in the present invention
Is not particularly limited, and is appropriately selected according to the use. Usually, 1 mm or more is preferable. When the existing portion of the net-like structure swells in a net-like manner (net-mesh) and the appearance is impaired, a certain thickness is required.

Hereinafter, the linear object 10 manufactured as described above will be described.
A method for producing the continuous inorganic fiber reinforced sheet 20 of the present invention using the method will be described with reference to FIG.

First, the linear objects 10 having a predetermined shape are arranged in a mesh pattern, and then the intersections 12 are melt-bonded by hot pressing to obtain a network structure. As shown in FIG. 1, the meshes 14 may be arranged in a grid pattern vertically and horizontally, and the meshes 14 may be rectangular. However, the shape of the meshes 14 is not particularly limited, and may be square, polygonal, or irregular. It may be shaped. Further, the method for producing the net-like structure is not limited to the above-described method.
Is woven into the desired net through a ready-made loom or knitting machine,
After that, any method such as hot press molding can be adopted.
In the present invention, these are collectively referred to as “arranged in a mesh pattern”.

The obtained network structure is cut into a predetermined size, and while the thermoplastic resin sheet 16 is placed on one or both sides of the network structure, the glass transition of the thermoplastic resin constituting the network structure is performed. Place in a press machine set at a point temperature or lower (preferably 160 ° C. or lower), and apply a low pressure (preferably 1
(0 kg / cm ² or less) for 5 to 10 minutes to obtain a continuous inorganic fiber reinforced sheet 20. In the case of both surfaces, in order to effectively perform deaeration, it is desirable that one surface be laminated by a press device and then the other surface be laminated by a press device.

As a continuous production method, the surface of the thermoplastic resin sheet 16 is brought into a semi-molten state by passing through a heating furnace, and then the sheet 16 is laminated on one side or both sides of the mesh structure. , And by firmly bonding them, a continuous inorganic fiber reinforced sheet 20 can also be obtained.

[0052]

The present invention will now be illustrated by examples. Example 1 A wire in the form of a net was produced by the method of WO 97/19805. Roving of glass fiber (average single fiber diameter 17
μm, tex number 2310, number of bundles 4000) One is supplied from the fiber supply port of the top plate on the upstream side of the impregnation area, and is continuously withdrawn from the downstream side while passing through the impregnation area, and into this area. From the extruder, a modified polypropylene (modified maleic anhydride, crystal melting point (DSC measurement) 16
0 ° C, MFR (21.18N: 230 ° C) 130 g / 1
0 min) and the molten resin was sufficiently impregnated between the opened rovings. The temperature in the impregnation zone was adjusted to 270 ° C. As the outlet nozzle, the vertical nozzle
Those having a size of 6 mm and a width of 5 mm were used. The impregnated material withdrawn from the nozzle was cooled and solidified through a nipple. The glass content of the obtained linear material was 60% by weight.

Further, the linear material was introduced into a coating resin tank kept at 250 ° C., and a polypropylene random polymer (crystal melting point (DSC measurement) 140 ° C., MFR (21.18N: 23)
(0 ° C.) 7 g / 10 min) was coated with a thickness of 0.1 mm to obtain a wire for net.

The obtained linear material for a net was heated to 150 ° C., and the linear materials were arranged in a mesh shape with a mesh size of 50 mm square, and were welded under pressure with a press at a pressure of 5 kg / cm ² to form an intersection. Heat fusion was performed to obtain a network structure. A continuous inorganic fiber reinforced sheet was prepared by sandwiching the sheet between soft vinyl chloride sheets having a thickness of 2 mm.

Example 2 A continuous inorganic fiber reinforced sheet was obtained in the same manner as in Example 1. However, in the production of the linear material for a net, the coating thickness was set to 0.4 mm.

Comparative Example 1 A continuous inorganic fiber reinforced sheet was obtained in the same manner as in Example 1. However, in the production of the linear material for a net, coating was not performed.

[Evaluation Method] Measurement of Intersection Strength The net-like structure obtained in Examples 1 and 2 and Comparative Example 1 was cut out with a thick line portion in FIG. 1, and the portion (a) was cut with one of chucks of a tensile tester. Grasp, and also grab (b1) and (b2) with the other chuck, measure the strength at the intersection (c) of the mesh structure,
This strength was defined as the intersection strength.

Misalignment The misalignment of the continuous inorganic fiber reinforced sheets obtained in Examples 1 and 2 and Comparative Example 1 was visually observed.

Folding property The linear material constituting the net-like structure is folded so that the fold is perpendicular to the length direction of the continuous inorganic fiber reinforced sheet, and then returned to its original state. Was done.

Tensile strength Measured according to JIS Z1527-1076.

[0061]

[Table 1]

A continuous inorganic fiber reinforced sheet having excellent intersection strength, misalignment and bending resistance was obtained.

[0063]

According to the present invention, the strength of the intersection is strong, the mesh structure of the network structure is not misaligned due to the deviation of the intersection in the transportation and lamination steps, a sufficient strength reinforcing effect is obtained, and the appearance due to the misalignment is obtained. A continuous fiber reinforced sheet that does not deteriorate and has excellent bending resistance is obtained, and is particularly suitable for a waterproof sheet, a roofing material, a floor material, a ceiling material, a reinforcing material (backup base material) for mortar, and the like.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a continuous inorganic fiber reinforced sheet of the present invention.

FIG. 2 is a sectional perspective view showing an example of a linear object 10.

FIG. 3 shows JIS Z1527-197 used in Examples.
FIG. 6 is a diagram for explaining measurement of tensile strength according to Example 6; 2 Continuous inorganic fiber 4 Thermoplastic resin (for impregnation) 6 Reinforced core material layer 8 Skin material layer 10 Linear material 12 Intersection 14 Mesh 16 Thermoplastic resin sheet 20 Continuous inorganic fiber reinforced sheet

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 4F100 AA00A AA00B AG00A AG00B AK01A AK01B AK03A AK03B BA02 BA22 DD21A DD21B DD31A DD31B DG04A DG04B EJ82A EJ82B GB90 JA04A JA04B JB16A JB00BJA4JB17A01A CC10

Claims (6)

[Claims] A linear material comprising a resin skin layer coated on the surface of a reinforced core material layer obtained by impregnating continuous inorganic fibers aligned in the longitudinal direction with a thermoplastic resin, is arranged in a mesh pattern. A continuous inorganic fiber reinforced sheet obtained by heat-sealing and laminating a thermoplastic resin sheet on one or both surfaces. 2. The resin skin layer has a thickness of 0.2 mm or more.
The continuous inorganic fiber reinforced sheet according to claim 1, wherein the sheet is 0.5 mm. 3. The resin contained in the resin skin material layer is a resin of the same type as the thermoplastic resin impregnated in the reinforced core material layer, and has a lower melting point than the thermoplastic resin impregnated in the reinforced core material layer. The continuous inorganic fiber reinforced sheet according to claim 1, wherein the sheet is provided. 4. The thermoplastic resin impregnated with continuous inorganic fibers is a polyolefin resin.
The continuous inorganic fiber reinforced sheet according to the above. 5. The method according to claim 5, wherein the reinforcing inorganic material layer contains 10 continuous inorganic fibers.
The continuous inorganic fiber reinforced sheet according to claim 1, which is contained in an amount of from 80 to 80% by weight. 6. The continuous inorganic fiber reinforced sheet according to claim 1, wherein the continuous inorganic fibers are glass fibers.