KR101458828B1 - Manufacturing method of laminated sheet using a automobile interiors - Google Patents

Abstract

The present invention relates to a method for manufacturing a laminated sheet for a vehicle interior decoration, the method including: a) preparing a base layer by extruding a chip formed of a waste sheet; b) forming an adhesive layer on one surface of the base layer; c) forming a printing layer on the adhesive layer; and d) forming a nap layer on the printing layer, wherein the chip has a dual structure in which a second resin is uniformly distributed in a first resin. The laminated sheet according to the present invention uses a recirculation chip derived from a waste sheet of a vehicle, and the amount of the recirculation chip can be reduced by adjusting the composition ratio of a thermoplastic resin, a filler and a processing material according to the content of the recirculation chip so that the raw material can be saved. In addition, the laminated sheet has various designs and colors so the laminated sheet can be used for external appearance decoration and can increase surface hardness and produce quality. Since the laminated sheet has a light weight, the laminated sheet has high value added and competitiveness, so the recirculation of the waste of the internal sheet of the vehicle can be promoted. The laminated sheet according to the present invention is eco-friendly and facilitates the resource utilization, so the recirculation of the waste of the internal sheet of the vehicle can be improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a laminated sheet for automobile interior materials,

The present invention relates to a method for producing a laminated sheet for an automobile interior material, and more particularly, to a method for producing a laminated sheet for automobile interior materials, which comprises a base layer based on a chip on which automobile interior seat waste is recycled, The present invention relates to a method for manufacturing a laminated sheet for automobile interior material, which is obtained by laminating a plurality of surface layers in a single layer or in multiple layers.

Since the number of automobiles produced in Korea is more than 3.5 million per year and the shape of the built-in seat is different according to the shape of the indoor steel sheet in its production process, the scraper discharged at the time of press cutting is 1000 t , And Milyang area).

The utilization of such scrap is important not only in terms of cost reduction but also in terms of environmental problems. Also, according to the request of the environment, various efforts are being made to recycle each element of the automobile, and there is a need to recycle the carpet flooring mat as well as other parts of the automobile carpet board.

Such automobile interior materials are mainly made of woodstock, reinforced boards using natural fibers, felt suitably mixed with jute and polypropylene, nonwoven fabric made of a mixture of polyethylene terephthalate and polyethylene, and the like. However, these materials are highly desirable in terms of complementing their physical properties, but they are difficult to separate after they are used, making them difficult to recycle. They are classified as industrial wastes and incinerated. There is a problem that is caused.

Korean Patent No. 10-0815634 describes a method for producing a sheet using natural leather waste, but it is only a technology related to a building interior material using a leather-like material, and development of a technology for recycling automobile interior material waste has not yet been developed It is a point in time.

Korean Patent No. 10-0815634 (Mar. 20, 2008)

Disclosure of the Invention The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method for manufacturing a semiconductor device, which comprises a substrate layer including a recycled chip using automotive interior sheet waste at low cost, And more particularly to a method for producing a laminated sheet for automotive interior materials in which a surface layer is laminated in a single layer or in multiple layers.

Another object of the present invention is to provide a method for producing a laminated sheet for automobile interior materials, in which a mixture is further added to improve the strength and antistatic properties of the sheet to be produced.

The present invention relates to a laminated sheet for automobile interior material.

One aspect of the present invention is

a) preparing a base layer by extruding a chip made of a waste sheet;

b) forming an adhesive layer on one side of the substrate layer; And

c) forming a brushed layer on one side of the adhesive layer;

Wherein the chip has a form in which a first resin is dispersed in a second resin. The present invention also relates to a method for producing a laminated sheet for an automobile interior material.

Another aspect of the present invention relates to a method for manufacturing a laminated sheet for an automobile interior material, in which a substrate layer is formed by embossing one surface on which an adhesive layer is formed to form a concavo-convex portion.

Wherein the first resin is selected from the group consisting of polyethylene, polypropylene nylon 6, polybutylene terephthalate, poly (1-butene), poly (1-pentene) 1-hexene), and the second resin is at least one selected from the group consisting of nylon 6,6, polyethylene terephthalate, polyurethane, polyacrylonitrile, poly (3-methyl- Polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene, polymetaphenylene isophthalamide, polyparaphenylene terephthalamide, polybenzimidazole, polybenzoxazole, polybenzothiazole and polyimide.

Also, the adhesive layer may be formed of an ethylene-vinyl acetate copolymer, an ethylene- (meth) acrylate copolymer, an ethylene- alkyl acrylate copolymer, an ethylene- (meth) acrylic acid copolymer, an ethylene- (meth) (Meth) acrylic acid-alkyl acrylate copolymer, (meth) acrylic acid grafted polyethylene, (meth) acrylic acid grafted polypropylene, (meth) acrylic acid-methacrylic acid copolymer, Acrylic acid grafted ethylene-vinyl acetate copolymer, (meth) acrylic acid grafted ethylene- (meth) acrylate copolymer, (meth) acrylic acid grafted ethylene-alkyl acrylate copolymer, maleic anhydride grafted polyethylene, maleic anhydride Acid grafted polypropylene, maleic anhydride grafted ethylene-vinyl acetate copolymer, maleic anhydride grafted ethylene- ( Agent) acrylate copolymer and a maleic anhydride grafted ethylene-can include any one or more or more selected from alkyl acrylate copolymers.

The bristle layer may include a fiber composed of any one or two or more polymers selected from polyethylene, polypropylene, polyvinyl chloride, polyester, polyethylene-polyester copolymer, nylon and thermofusible fluororesin, The fiber may have a fineness of 1 to 100 de, and a bristle fiber length of 1 to 30 mm.

Another aspect of the present invention is a method for producing an adhesive layer, comprising the steps of providing a substrate layer on which the adhesive layer is not formed, on at least one surface of which a layer of a polyvinyl alcohol, ethylene-vinyl alcohol copolymer, ethylene-propylene-vinyl alcohol copolymer, polyacrylic acid, (Meth) acrylic acid-methacrylic acid copolymer, an ethylene- (meth) acrylic acid- (meth) acrylate copolymer, an acrylic acid-maleic acid copolymer, a (meth) acrylic acid graft polyethylene, Polypropylene and (meth) acrylic acid grafted ethylene- (meth) acrylate. The present invention also relates to a method for producing a laminated sheet for automotive interior materials.

Another embodiment of the present invention is a method for producing a bristle layer, which comprises adding to 100 parts by weight of a fiber spinning solution for forming a bristle layer, an alkylamine oxide, alkylphosphine oxide, alkyl sulfoxide, quaternary alkyl ammonium halide, alkyl imidazole salt halide, , An alkylsulfonium halide, and an alkylphosphonium halide in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the total amount of the antistatic agent.

Another aspect of the present invention relates to a method for producing a laminated sheet for automotive interior materials, which comprises adding 0.01 to 1 part by weight of barium oxide, potassium oxide or a mixture thereof to 100 parts by weight of the fiber spinning solution forming the brassy layer will be.

The laminated sheet according to the present invention can reduce the amount of the thermoplastic resin, the filler and the processing aid by adjusting the composition ratio of the thermoplastic resin, the filler and the processing aid according to the content of the recycled chip by using the automobile interior seat waste recycle chip, There are advantages to be able to.

The laminated sheet according to the present invention has a variety of designs and colors so that not only the function of decorating the appearance but also the excellent surface hardness can be imparted to improve the quality and the lighter weight of the laminated sheet can be achieved, And thus it is possible to overcome the difficulty of recycling the automobile interior seat waste. Further, the laminated sheet according to the present invention is advantageous in that it can be recycled as a raw material because it is eco-friendly and easy to utilize resources.

1 and 2 show cross sections of a laminated sheet produced according to an embodiment of the present invention.

Hereinafter, the recyclable polyolefin-based multifunctional food packaging material according to the present invention will be described in more detail through drawings, examples and comparative examples. It should be understood, however, that the invention is not limited thereto and that various changes and modifications may be made without departing from the spirit and scope of the invention.

Unless otherwise defined, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In addition, the following drawings are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the following drawings, but may be embodied in other forms, and the drawings presented below may be exaggerated in order to clarify the spirit of the present invention. Also, throughout the specification, like reference numerals designate like elements.

The method for manufacturing a laminated sheet for an automobile interior material according to the present invention

a) preparing a base layer by extruding a chip made of a waste sheet;

b) forming an adhesive layer on one side of the substrate layer; And

c) forming a brushed layer on one side of the adhesive layer;

.

The step a) is a step of producing a base layer by extruding a chip made of a waste sheet, and the chip can be manufactured by melting and extruding an automobile interior material. In detail, first, the automobile interior material in the scrapped car is collected, and then the interior material is ground to produce the ground material. In this case, the interior material may be a defective material generated in the automobile interior material production process, a scraper generated in the processing process, or a mixture thereof. In the present invention, although the size of the ground material is not limited, (400 to 900 mm < 2 >) is that the automobile interior seat waste is pulverized and the materials having different physical properties are separated from each other, and the material is swollen and unevenly formed. Therefore, such unevenly formed wastes are not used It is desirable not to.

The pulverized product is melted and extruded to produce a rod. The melting and extrusion may be carried out using a commonly used extruder, but in the present invention, it is preferable to melt at a specific range of temperatures in order to produce a chip in which the second resin is uniformly dispersed in the first resin. In detail, the automobile interior materials generally manufactured are made of various kinds of polymers and have different melting temperatures. By using the difference in melting temperature, a polymer having a relatively high melting temperature can be effectively dispersed in a polymer having a low melting temperature without separating the polymer, so that a chip can be effectively manufactured without requiring physical separation.

In the melting step, the melting temperature (T _p ) may be Tm ¹ < T _p < Tm ² (wherein Tm ¹ is the melting temperature of the first resin and Tm ² is the melting temperature of the second resin). The melting temperature is for uniformly dispersing the second resin in the first resin so as not to impair the physical properties of the base layer while dispersing various resins.

The melting temperature (T _p ) is preferably in the range of 180 to 250 ° C, more preferably 220 to 230 ° C. It is preferable to prepare the rod and the chip after determining the melting temperature based on the above range.

Preferably, the first resin is selected from the group consisting of polyethylene, polypropylene nylon 6, polybutylene terephthalate, poly (1-butene), poly (1-pentene) Hexene) and poly (3-methyl-1-hexene), and the second resin is at least one selected from the group consisting of nylon 6,6, polyethylene terephthalate, polyurethane, polyacrylonitrile, One or more selected from among carbon fiber, polymetaphenylene isophthalamide, polyparaphenylene terephthalamide, polybenzimidazole, polybenzoxazole, polybenzothiazole, and polyimide .

The molten mixture may be extruded through an extruder. At this time, it is preferable that a plurality of discharge ports are provided, and they can be manufactured as a rod-shaped extrudate. In addition, the temperature and discharge pressure of the discharge port, the rotational speed of the screw, the diameter of the screw, and the like can be freely changed according to the manufacturing process, and the present invention is not limited thereto.

The produced rod can be cooled and then ground into chips. Although the present invention does not limit the grinding method and the size of the pulverized chips, pulverization in the range of 2 mm to 10 mm (width 4 to 100 mm 2) not only takes account of economical aspects of recycling, So that the occurrence of the second pollution can be prevented. Further, the chips may be sorted by particle size so that only chips having the above range can be used.

The base layer may be prepared by melting and extruding chips prepared in the above process into an extruder. At this time, the filler, the processing aid or a mixture thereof may be further added to enhance the physical properties.

It is preferable to add at least one selected from wood powder, talc, calcium carbonate, carbon black, stabilizer, master batch, antibacterial agent and deodorant for the purpose of increasing the strength of the substrate layer to be produced. At this time, it is preferable that the added amount is 10 to 100 parts by weight based on 100 parts by weight of the chip. When the amount is less than 10 parts by weight, the effect of improving the strength is insignificant. When the amount is more than 100 parts by weight, the surface smoothness of the substrate layer to be produced may be greatly reduced.

The processing aid is one or more selected from the group consisting of carbon black, a stabilizer, an antioxidant, an antimicrobial agent and an odor removing agent in order to prevent tackiness and the like of the sheet to be produced. The processing aid may be used in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the chip, so that the above effect can be achieved without impairing the physical properties of the base layer.

The base layer may be formed by a method commonly used in the art, such as casting using a rotating drum or a moving belt, melt pressing, bubble, calender, or the like . Further, the base layer may vary depending on the purpose of production, but it is preferable that the thickness is 0.01 탆 to 3 탆.

In addition, the substrate layer according to the present invention may further have a concavo-convex portion by embossing one surface of the substrate layer on which the adhesive layer is formed, as shown in FIG. The convexo-concave portion is for forming a space between the base layer and an adhesive layer laminated on one surface of the base layer. In Fig. 2, the concavo-convex portion 14 represents a space between the base layer and the adhesive layer. By securing the space, it is possible to mitigate the impact applied to the sheet itself, and to prevent deformation of the sheet due to a sudden temperature change when the base layer and the adhesive layer are joined together.

The convexo-concave portion is not limited to a forming method, and may be formed using an embossing roller having unevenness on its surface, such as Korean Patent No. 10-1281404. The shape and size of the concavo-convex portion formed on the base layer are not limited, and can be freely changed within a range capable of maintaining the base layer or the original shape of the sheet to be produced. However, it is preferable that the concave-convex portion is formed by 20 to 50% by area when the area of one surface of the base layer is 100% by area. If the thickness is less than 20% by volume, the space between the base layer and the adhesive layer becomes too wide, and the mechanical properties of the sheet may be greatly reduced. If the thickness exceeds 50% by weight, the impact relaxation effect may be lowered.

Next, an adhesive layer is formed on one surface of the base layer as in step b). The adhesive layer is for adhering the substrate layer to the bristle layer or the print layer and is preferably an adhesive polyolefin resin, specifically an ethylene-vinyl acetate copolymer having a weight average molecular weight of 50,000 to 100,000, an ethylene- (meth) acrylate copolymer (Meth) acrylic acid copolymers, ethylene- (meth) acrylic acid copolymers, ethylene- (meth) acrylic acid copolymers, ethylene- (meth) acrylic acid- (Meth) acrylic acid-alkyl acrylate copolymer, (meth) acrylic acid grafted polyethylene, (meth) acrylic acid grafted polypropylene, (meth) acrylic acid grafted ethylene-vinyl acetate copolymer, Methacrylate copolymer, (meth) acrylic acid graft ethylene-alkyl acrylate copolymer, maleic anhydride graft polymer Ethylene-maleic anhydride grafted polypropylene, maleic anhydride grafted ethylene-vinyl acetate copolymer, maleic anhydride grafted ethylene- (meth) acrylate copolymer, and maleic anhydride grafted ethylene-alkyl acrylate copolymer Or a combination of two or more selected from the group consisting of &lt; RTI ID = 0.0 &gt;

The adhesive is not limited to the application method, but it is preferable to use extrusion lamination or dry lamination in view of cost reduction and environment-friendly process because no solvent is used.

Next, a printing layer is formed in step c). The printed layer is not limited to a material but may have a weight average molecular weight of 1,000 to 400,000 and a chlorine content It is preferable to use chlorinated polypropylene having 1 to 45% by weight. In order to exhibit various colors, an appropriate amount of dye or pigment can be further added for the purpose of production.

The printing layer does not limit the forming method, but it is preferable to use the melt extrusion method in order to form the brushed layer on one side. Thickness is not limited, but it is preferable that the thickness is 0.01 탆 to 3 탆.

Next, a brushed layer is formed on one side of the print layer as in step d). In this case, it is preferable that the bristle layer is formed by the melt extrusion method after the printing layer is formed, and then the bristle layer is pressed by means of a roller in a state in which the remaining heat remains, from the viewpoint of workability.

The bristle layer can be produced in the form of a nonwoven fabric or a woven fabric to further enhance the physical properties of the sheet to be produced and to obtain an excellent endothermic and thermal insulating effect. Depending on the length of the fiber, it can be separated into a short fiber layer or a long fiber layer, which can be determined by the length of the fibers formed on the bristle layer through the brick process.

Examples of the fiber constituting the bristle layer include polyethylene, polypropylene, polyvinyl chloride, polyester, polyethylene-polyester copolymer, nylon and thermofusible fluorine resin, and most preferably has a melting point of 80 to 120 ° C By weight of the low melting point thermoplastic resin and 5 to 70% by weight of the high melting point thermoplastic resin having a melting point of 250 to 280 캜.

Further, the fibers constituting the bristle layer have a fineness of 1 to 100 de, preferably 1 to 50 de, so that the fibrous filament of bristles is 1 to 30 mm, preferably 1 to 10 mm, . In addition, the thickness of the brass layer in the present invention is not limited, and can be freely changed according to the processing conditions.

Further, in the present invention, it is described that the bristle layer is formed on one surface with reference to the substrate layer. However, the bristle layer may be further formed on one surface of the substrate layer on which the adhesive layer is not formed, It is also possible to form a layer.

The laminated sheet according to the present invention may further comprise a film layer on one side of a base layer on which an adhesive layer is not formed, in order to prevent permeation of gas such as oxygen to protect the base layer. The film layer is not limited to a thickness and a forming method, and it is preferable to use a resin capable of hydrogen bonding to improve the barrier property.

Examples of the film layer forming material include polyvinyl alcohol, ethylene-vinyl alcohol copolymer, ethylene-propylene-vinyl alcohol copolymer, polyacrylic acid, ethylene- (meth) acrylic acid copolymer, ethylene- (meth) (Meth) acrylic acid metal salt copolymer, an ethylene- (meth) acrylic acid- (meth) acrylate copolymer, an acrylic acid-maleic acid copolymer, (meth) acrylic acid grafted polyethylene, (meth) acrylic acid grafted polypropylene and And graft ethylene- (meth) acrylate. These may be used singly or in combination of two or more thereof.

In addition, when the film layer is formed, inorganic materials such as mica, talc, and silicate may be mixed to further improve the barrier property. The amount of the inorganic substance is not limited to the addition amount, and it is preferable to adjust the addition amount freely within a range that does not impair the physical properties.

The laminated sheet for an automobile interior material according to the present invention may further include an antistatic agent to reduce the generation of static electricity. The antistatic agent may be adhered to the surface of the fibers constituting the bristle layer, but it can be easily dropped by friction. Therefore, it is preferable that the antistatic agent is injected into the bristle layer fiber spinning solution and spun together.

The antistatic agent is preferably an alkyl amine oxide, an alkylphosphine oxide, an alkylsulfoxide, an alkyl quaternary ammonium halide, an alkyl imidazolium salt, may be any one or two or more selected from alkyl halide, halide, alkyl pyridinium halide, alkyl sulfonium halide and alkyl phosphonium halide, It is preferable to use an alkylammonium halide.

The antistatic agent is preferably contained in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the total spinning solution, because it has excellent antistatic effect and does not impair the physical properties of the fiber.

Further, it may further include a strength-enhancing agent to further improve the mechanical properties of the laminated sheet for automobile interior material to be manufactured. The strength enhancer can lower most of the physical properties such as the tensile strength and the burst strength of the fiber by lowering the temperature change of the fiber to be produced to prevent the deterioration of the properties of the fiber and the hygroscopicity thereof is excellent so that the antistatic effect It can be further maximized.

The strength-enhancing agent may be barium oxide (BaO) or calcium oxide (CaO). Any one of them may be used, but it is preferable to use a mixture to obtain a more excellent effect. However, the mixing ratio is not limited at this time, and the mixing ratio can be freely adjusted within a range that maximizes physical properties.

It is preferable that the strength-enhancing agent is included in an amount of 0.01 to 1 part by weight based on 100 parts by weight of the total spinning solution because physical strength of the bristle layer can be improved without impairing physical properties.

The antistatic agent or the strength-increasing agent may be added to the fiber spinning solution forming the bristle layer, but the antistatic agent or the strength-enhancing agent may be added to the base layer or the print layer to improve the physical properties. For example, when the above substance is added to the base layer, the waste sheet can be added together in the melting step after the pulverization of the waste sheet to improve the dispersibility and to obtain the desired property improvement effect. Dispersing method.

Hereinafter, a method for producing a laminated sheet according to the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the following examples and comparative examples are merely examples for explaining the present invention in more detail, and the present invention is not limited by the following examples and comparative examples.

The physical properties of the laminated sheet produced according to the present invention were measured as follows.

(Mechanical properties)

The tear strength was measured by the KS S0351 test method, and the tear strength and tensile strength by the KS M3001: 2001 test method.

(Static electricity generation evaluation)

In accordance with ASTM D-257, the sample was allowed to stand for 24 hours at a temperature of 23 ± 1 ° C and a relative humidity of 50 ± 15%, and then the surface resistance was measured using a resistivity meter. The unit was Ω / sq. .

(Example 1)

100 kg of sheet waste composed of a bristle layer made of polyethylene terephthalate (PET) and a bottom layer made of a composite polypropylene (PP) and a polyethylene terephthalate (PET) was subjected to primary preliminary grinding at a length of 20 mm and a length of 30 mm To obtain a mixture of polyethylene terephthalate having a fibrous component and resin particles such as polypropylene (PP) having a solid component, and then the resulting mixture was melt extruded in a twin screw extruder at a temperature of 220 캜. The melted extrudate thus produced is present in a state in which the polyethylene terephthalate component fiber is not melted. The melted extrudate thus produced is cooled and extruded into a pressed sheet having a thickness of 2 to 5 mm using a conventional Roller extruder . The molded extruded sheet was pulverized to have a length and a length of 100 mm × 350 mm, then pulverized into chips having a particle size of 10 mm or less and passed through a vibration filtering net having a mesh of 8 to 10 mm A chip dropped into the filter was obtained to prepare a recycled chip.

(Example 2)

A chip was prepared in the same manner as in Example 1 except that the quaternary alkylammonium halide was added to the mixture in Example 1 in an amount of 0.5 part by weight based on 100 parts by weight of the total mixture.

(Example 3)

A chip was prepared in the same manner as in Example 2 except that 0.05 part by weight of barium oxide (BaO) having an average particle diameter of 0.25 占 퐉 was added to 100 parts by weight of the entire mixture.

(Examples 4 to 6)

60 wt% of wood powder, 4.0 wt% of TALC, 10 wt% of antioxidant (trade name: 1010, 1076, supplied by the supplier), 30 wt% of the recycled chips prepared in Examples 1 to 3, homopolypropylene (Trade name: Shinwon Chemical Co., Ltd.) 0.2% by weight, lubricant (stabilizer) (trade name: CA-ST supplier: Shinwon Chemical Co.) 0.08% by weight carbon black 0.2% (Meth) acrylic acid-alkyl acrylate copolymer was coated on the top of the substrate layer to a thickness of 0.1 mm and then chlorinated polypropylene (CPP) having a weight average molecular weight of 18,000 and a chlorine content of 22 wt% Was laminated to produce a laminated sheet having a thickness of 6.1 mm.

Separately from the laminated sheet, 45% by weight of polyester fibers having a fineness of 20 de, a fiber length of 25 mm and 55% by weight of a thermofusible fluoropolymer fiber were mixed and carded, and then the mixture was carded at a rotation speed of 400 rpm and a transfer speed of 2.0 m / min , Needle 4,00 EA / m, and taming degree 50 times / cm2 to produce a brushed layer having a thickness of 20 mm, a bristle fiber length of 5 mm and a weight of 250 g / m &lt; 2 &gt;.

The bristle layer thus prepared was laminated on one side of the printing layer immediately after the formation of the printing layer, and then spread with a needle bar at a rate of 40 g / m &lt; 2 &gt; Temperature was passed at a speed of 8 M / min to prepare a sheet having a thickness of 20 mm. An air cool zone at 90 ° C was further passed through the sheet at a speed of 8 M / min to prepare a sheet having a thickness of 15 mm , A water cool zone at 50 DEG C was passed at a speed of 8 M / min, and a water cool zone at 30 DEG C was passed at a speed of 8 M / min to finally prepare laminated sheets each having a thickness of 10 mm.

(Example 7)

A laminated sheet was prepared in the same manner as in Example 6 except that 0.5 part by weight of quaternary alkylammonium halide was added to the spinning solution with respect to 100 parts by weight of the entire mixture.

(Example 8)

A laminated sheet was prepared in the same manner as in Example 7, except that barium oxide (BaO) having an average particle size of 0.25 mu m was added to the spinning solution in an amount of 0.05 part by weight based on 100 parts by weight of the total mixture.

[Table 1]

As described above, the laminated sheet according to the present invention shows excellent mechanical properties and antistatic performance by adding an antistatic agent and a strength enhancing agent. In particular, Example 8, in which the antistatic agent and the strength enhancing agent were both included in the substrate layer and the brass layer, exhibited the best values in terms of tear, tear and tensile strength, and exhibited the most excellent physical properties with low surface resistivity.

1: laminated sheet
11: substrate layer
12: Adhesive layer
13: Printed layer
14:

Claims (9)

a) preparing a base layer by extruding a chip made of a waste sheet;
b) forming an adhesive layer on one side of the substrate layer; And
c) forming a brushed layer on one side of the adhesive layer;
Wherein the chip has a shape in which a second resin is dispersed in the first resin,
(A) an alkylamine oxide, an alkylphosphine oxide, an alkyl sulfoxide, a quaternary alkyl ammonium halide, an alkyl imidazole salt halide, an alkyl pyridinium halide, an alkylsulfonium 0.1 to 5 parts by weight of at least one antistatic agent selected from halides and alkylphosphonium halides, and (B) 0.01 to 1 part by weight of barium oxide, potassium oxide or a mixture thereof. Gt; The method according to claim 1,
Wherein the base layer is formed by embossing one surface on which an adhesive layer is formed to form a concavo-convex portion. The method according to claim 1,
Wherein the first resin is selected from the group consisting of polyethylene, polypropylene, nylon 6, polybutylene terephthalate, poly (1-butene), poly (1-pentene) 1-hexene), and the second resin is at least one selected from the group consisting of nylon 6,6, polyethylene terephthalate, polyurethane, polyacrylonitrile, poly (3-methyl- Wherein the laminate comprises one or two or more selected from the group consisting of polyimide, polyimide, polyimide, polyimide, polyimide, polyimide, phenanthrene, &Lt; / RTI &gt; The method according to claim 1,
Wherein the adhesive layer is selected from the group consisting of ethylene-vinyl acetate copolymer, ethylene- (meth) acrylate copolymer, ethylene-alkyl acrylate copolymer, ethylene- (meth) acrylic acid copolymer, ethylene- (meth) (Meth) acrylic acid-alkyl acrylate copolymer, (meth) acrylic acid grafted polyethylene, (meth) acrylic acid grafted polypropylene, (meth) acrylic acid- Acrylic acid grafted ethylene-vinyl acetate copolymer, (meth) acrylic acid grafted ethylene- (meth) acrylate copolymer, (meth) acrylic acid grafted ethylene-alkyl acrylate copolymer, maleic anhydride grafted polyethylene, maleic anhydride Grafted polypropylene, maleic anhydride grafted ethylene-vinyl acetate copolymer, maleic anhydride grafted ethylene- (meth) acrylate, Methacrylate copolymers and a maleic anhydride grafted ethylene-alkyl acrylate method of any one or a laminate consisting of two or more sheets for automobile interior materials selected from copolymers. The method according to claim 1,
Wherein the bristle layer comprises a laminate sheet for automobile interior material comprising a fiber composed of one or two or more polymers selected from polyethylene, polypropylene, polyvinyl chloride, polyester, polyethylene-polyester copolymer, nylon and heat- &Lt; / RTI &gt; 6. The method of claim 5,
Wherein the fiber has a fineness of 1 to 100 de and a bristle fiber length of 1 to 30 mm. The method according to claim 1,
(Meth) acrylic acid copolymers, ethylene- (meth) acrylic acid- (meth) acrylic acid copolymers, and polyvinyl alcohols, ethylene-vinyl alcohol copolymers, ethylene-propylene-vinyl alcohol copolymers, (Meth) acrylic acid metal salt copolymer, an ethylene- (meth) acrylic acid- (meth) acrylate copolymer, an acrylic acid-maleic acid copolymer, (meth) acrylic acid grafted polyethylene, (meth) acrylic acid grafted polypropylene and Grafted ethylene- (meth) acrylate, and a film layer made of at least one selected from the group consisting of grafted ethylene- (meth) acrylate. delete delete

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