JPS6042025B2 - Molded article with coating layer and manufacturing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that a resin coating layer or a foam coating layer made of a vinyl chloride resin or an ABS resin is laminated on the surface of a molded article made of polypropylene via a base fabric having extensibility. There is a molded article with a coating layer, and furthermore,
The present invention relates to a method of manufacturing the molded article with a coating layer.

Molded objects made of polypropylene have excellent mechanical strength and are used in various fields, but it is extremely difficult to print or color the surface of the molded objects, and molding is difficult. It was not possible to create various drawings and patterns on the surface of the body, and it could not be used for decorative purposes.

Therefore, it has been proposed to laminate a highly decorative coating layer such as a resin coating layer made of vinyl chloride resin or ABS resin or a foam coating layer on the surface of a polypropylene molded body. However, since no adhesive has been found that can strongly bond polypropylene and vinyl chloride resin, ABS resin, or foam even if they are directly laminated, moldings made of polypropylene have not been found. It has been almost impossible to form a resin coating layer or a foam coating layer made of vinyl chloride resin or ABS resin that is strongly bonded to the surface of the body. The inventors conducted intensive research with the aim of improving the above-mentioned drawbacks of molded articles made of polypropylene, and as a result, they completed the present invention by using a base fabric having extensibility.

That is, this invention uses vinyl chloride resin or ABS.
The present invention relates to a molded article with a coating layer, in which a resin coating layer or a foam coating layer made of a polypropylene resin is laminated on the surface of a polypropylene molded article via a base fabric having extensibility.

The present invention also provides a preform for coating made of vinyl chloride resin or ABS resin provided with a base fabric having extensibility, or a preformed article for coating having a foam layer provided with a base fabric having extensibility. The preform is placed along the inner surface of the mold so that the surface without the base fabric faces the inner surface of the mold, and the polypropylene is poured into the mold. At least the portion in contact with the base fabric is molten, and the coating layer formed from the preform is laminated on the surface of the molded body simultaneously with the molding of polypropylene by supplying and pressurizing the base fabric. The present invention relates to a method for producing a molded article with a characteristic coating layer.

The molded article with a coating layer of the present invention is a resin coating layer or a foam coating layer made of a vinyl chloride resin or an ABS resin, which is laminated on the surface of a polypropylene molded article with a base fabric having extensibility interposed therebetween. are strongly bonded and have excellent durability.

According to the method of the present invention, even when the surface of a molded article made of polypropylene having a complicated curved surface is coated, wrinkles, lifting, tears, etc. do not occur in the coating layer, and the above-mentioned excellent molded article with a coating layer can be obtained. is obtained.

Hereinafter, this invention will be described in more detail with reference to the drawings.

FIG. 1 is a cross-sectional view of one embodiment of the molded article with a coating layer of the present invention, FIG. 2 is a cross-sectional view of another embodiment of the molded article with a coating layer of the present invention, and FIG. The figure is a cross-sectional view schematically showing a state in which a molded article with a coating layer is manufactured by injection molding, which is an embodiment of the method of the present invention, and FIG. By compression molding as an example,
1 is a cross-sectional view schematically showing a state in which a molded article with a coating layer is manufactured.

In FIG. 1, a molded article with a covering layer 1 includes a base fabric 5 having extensibility, on one side of which a resin covering layer 2 made of vinyl chloride resin or ABS resin is bonded with a bonding agent layer 4. It is laminated on the surface of the molded body 3 made of polypropylene via the polypropylene molded body 3.

In FIG. 2, the molded article 1 with a covering layer has a foam covering layer in which a surface material layer 7 and a resin layer 8 are bonded to both sides of a foam layer 6 by a bonding agent layer 4'' and a bonding agent layer 4'', respectively. 9 is laminated on the surface of a polypropylene molded body 3'' containing reinforcing glass fibers via a stretchable base fabric 5 bonded to one side of the resin layer 8 by a bonding agent layer 4''. There are things that have been done. In FIG. 1, a foam coating layer 9 can be used instead of the resin coating layer 2, and in FIG. 2, a resin coating layer 2 can be used instead of the foam coating layer 9.

The extensible base fabric 5 used in this invention is:
Polypropylene is elongated by about 50% or more during molding, and includes structurally extensible fabrics such as knitted fabric and crimped synthetic fibers, acrylic resins such as acrylonitrile-vinyl chloride copolymer, and parts. It is made of a cloth that has extensibility when heated to a temperature of about 150 to 250°C, such as a cloth made of fibers obtained from resins such as saponified vinyl acetate resin and urethane resin.

Since the extensible base fabric 5 can maintain its shape even when it comes into contact with molten polypropylene,
It is necessary to have heat resistance.If the extensible base fabric 5 is made of a cloth that is extensible when heated, the covering layer will not remain even when used for a molded article with a complex curved surface. It is particularly preferable because it does not cause peeling or lifting of the coating layer.The extensible base fabric 5 has an average thickness of 0.1 to
It is preferable that it is about 10T1Uf1. In this invention, it is important to use the above-mentioned base fabric having extensibility. If you use a base fabric that does not have stretchability,
When the molded article 3 made of polypropylene has a curved surface, wrinkles, bulges, etc. occur in the coating layer, making it impossible to obtain a molded article with a coating layer that is integrally laminated as a whole. In this invention, by using the above-mentioned extensible base fabric 5, the base fabric is impregnated with molten polypropylene and an anchoring effect is obtained. The resin coating layer 2 or the foam coating layer 9 made of ABS-based resin or ABS-based resin can be integrally laminated on the whole with strong adhesive force.

The resin coating layer 2 used in this invention is made of vinyl chloride resin or ABS resin. The average thickness of the resin coating layer 2 is 0.01 to 2 wft1, especially 0.1 to 2 wft1.
17r$t is preferred. The vinyl chloride resin is a vinyl chloride polymer, a copolymer of vinyl chloride and other monomers containing 60% or more of vinyl chloride units, containing 50% by weight or more, especially 6% by weight or more. It is a thermoplastic resin, and in addition to the above-mentioned vinyl chloride polymer or copolymer, other synthetic resins such as ethylene-vinyl acetate copolymer, AB
It may contain one or a mixture of two or more of S resins, MBS resins, acrylic resins, etc. in a proportion of less than about 5 weight %, especially 0 weight % or less.

PVC resins contain various additives, such as plasticity,
Fillers, reinforcing agents, dyes, pigments, etc. may be appropriately blended. In particular, the content of plasticizer is preferably about 1% by weight or less. The ABS resin is a thermoplastic resin containing an acrylonitrile-butadiene-styrene copolymer of 5% by weight or more, particularly 60% by weight or more. /VBS copolymer resin, other synthetic resins,
For example, one or two of vinyl chloride polymers, ethylene-vinyl acetate copolymers, N4BS resins, acrylic resins, etc.
The mixture of seeds or more may be contained in a proportion less than 5% by weight, especially less than 5% by weight.

Various additives may be appropriately blended into the ABS resin. The foam coating layer 9 used in this invention is:
Made of thermosetting resin such as soft or semi-rigid polyurethane, polyethylene, ethylene-vinyl acetate copolymer, vinyl chloride resin containing about 25 to 35% by weight of plasticizer,
Polyvinyl alcohol resin, syndiotactic 1, 2
- A surface material layer 7 is bonded to one side of a foam layer 6 made of thermoplastic resin such as polybutadiene or polystyrene, or rubber such as cis-1,4-polybutadiene, ethylene-propylene copolymer, natural rubber, or chloroprene rubber. If necessary, a resin layer 8 may be bonded to the other surface of the foam layer 6 as shown in the drawings.

The average thickness of the foam coating layer 9 is preferably about 0.3-12=, the average thickness of the foam layer 6 is preferably 0.1-10w&, and the average thickness of the surface material layer 7 is 0.05-12. The average thickness of the resin layer 8 is preferably 0.05 to 0.5 W$L. The surface material layer 7 and the resin layer 8 may each be bonded to one side of the foam layer 6 by heat fusion or by flame bonding, but as shown in the drawings, It may also be bonded to one side of the foam layer 6 by a bonding agent layer 4'' or a bonding agent layer 4''-, respectively. Bonding agent layer 4″
The bonding agent for the bonding agent layer 4'' is chlorinated polypropylene, urethane resin, resin solution such as ethylene-vinyl acetate copolymer, rubber latex such as styrene-butadiene copolymer latex, polyvinyl acetate emulsion, polyacrylonitrile. Resin emulsion such as emulsion or polyethylene, vinyl chloride resin,
A heat sealant such as ethylene-vinyl acetate copolymer is used. The foam of the foam layer 6 may have a closed cell structure or an open cell structure, and may be crosslinked by radiation crosslinking by electron beam irradiation or chemical crosslinking by organic peroxide. It may be cross-linked,
It may be non-crosslinked, and the foaming ratio is 2 to 2.
40, particularly preferably 4 to 20. The surface material of the surface material layer 7 is not particularly limited as long as it has decorative properties, and examples thereof include soft or semi-hard polyurethane, ethylene-vinyl acetate copolymer, ethylene-propylene copolymer, plastic Acrylic resins such as vinyl chloride resins, polyvinyl alcohol resins, syndiotactic 1,2-polybutadiene, and acrylic monomer-vinyl monochloride copolymers containing about 25 to 35% by weight of agents. fat,
A resin such as ABS resin is used.

Various additives such as fillers, reinforcing agents, dyes, pigments, etc. may be appropriately blended into the surface material. The resin of the resin layer 8 has a plasticizer content l of about 10
Hard thermoplastic resins such as vinyl chloride resins, ABS resins, and polypropylene resins having a weight percentage of less than % by weight are used.

The resin of the resin layer 8 may contain various additives such as fillers, reinforcing agents, processing aids, etc. as appropriate. In this invention, the base fabric 5 having extensibility is
It is bonded by heat fusion to the foam surface or resin surface, which is one side of the resin coating layer 2 made of vinyl chloride resin or ABS resin, or one side of the foam coating layer 9, but it is not bonded by flame bonding. or may be bonded by a bonding agent layer 4 or a bonding agent layer 4'' as shown in the drawings.The bonding agent for the bonding agent layer 4 and bonding agent layer 4'' may be chlorinated polypropylene, urethane, etc. Resin, resin solution such as ethylene-vinyl acetate copolymer, rubber latex such as styrene-butadiene copolymer latex, resin emulsion such as polyvinyl acetate emulsion, polyacrylonitrile emulsion, or polyethylene, vinyl chloride resin, ethylene-vinyl acetate A heat sealant such as a copolymer is used. Vinyl chloride resin or A provided with a base fabric having extensibility in the method of this invention
The covering preform 2'' made of BS resin is, for example, a sheet or film made of vinyl chloride resin or ABS resin, with a base fabric having extensibility such as woven fabric, nonwoven fabric, or felt bonded to one side of the sheet or film. A sheet is formed, and then the sheet with the extensible base fabric is formed into a preformed body (a mold for producing a polypropylene molded body) by air pressure forming, vacuum forming, or other sheet forming. It can be manufactured by a method of molding into a shape corresponding to the shape of the inner layer.

The vinyl chloride resin or ABS resin sheet (film) used for molding the preform has an average thickness of approximately 0.01 to 2, particularly 0.1 to 1? It is preferable that the surface of the sheet (film) be decorated with a pattern such as wood grain printed on it. In addition, the extensible base fabric provided in the sheet (film) has an average density of 25 to 65.
It is preferable to have a wale (course)/inch, particularly 30 to 60 wale (course)/inch. If the thickness and density of the base fabric are too small, it is not preferable because a strongly adhesive coating layer cannot be laminated on the surface of the polypropylene molded body. In addition, in the method of the present invention, the covering preform 9'' having a foam layer provided with a base fabric having extensibility is, for example, a sheet, film, cloth, etc. on one side of the above-mentioned foam sheet. On the foam surface of the sheet obtained by joining the surface material,
A base fabric having extensibility such as woven fabric, non-woven fabric or felt may be bonded, or a surface material such as a sheet, film or cloth and the above-mentioned hard thermoplastic resin may be bonded to both sides of the above-mentioned foam sheet. A woven fabric,
A sheet is formed by bonding an extensible base fabric such as a nonwoven fabric or felt, and then the sheet with the extensible base fabric is preformed by air pressure forming, vacuum forming, or other sheet forming methods. It can be manufactured by a method of molding it into a body.

The foam sheet used to form the preform has an average thickness of about 0.1 to 1077!77! In particular, it is preferably about 2 to 5 wL, and the average thickness of the sheet (film, cloth) used as the surface material used for forming the preform is about 0.05 to 3 W.
The average thickness of the hard resin sheet (film) is preferably about 0.05 to 0.5Tf$11, especially about 0.2 to 0.4Tf0n.
It is preferable that T0n be present. The surface material may be decorated by printing or the like. The method of the present invention includes a covering preform 2'' made of vinyl chloride resin or ABS resin provided with a base fabric 5 having extensibility, and a foam layer provided with the base fabric 5 having extensibility. The preformed body 9″ for coating has a molding die 1 for molding polypropylene by supplying and pressurizing polypropylene while at least the portion in contact with the base fabric is molten.
It is preferable that the shape is such that the molding die 10 or the molding die 12 and the preform 2'' can be brought into close contact with each other along the inner surface of the molding die 12. Alternatively, it is not necessary that the preform 9'' match in detail. In this invention, the polypropylene may be any type of polypropylene conventionally used for molding.
The polypropylene may contain conventionally known additives, fillers, etc.

In particular, about 10 to 6% by weight, especially about 20 to 50% by weight, of long fiber type reinforcing glass fibers having a fiber length of about 1" or more, preferably 20Tfrm or more and a diameter of 5 to 30μ, are used. % of polypropylene is preferred because the molded product thereof has excellent rigidity and heat deformation resistance. There is no particular restriction on the form of the long fiber type reinforcing glass fiber, for example, about 1 Trt. Individually dispersed continuous filaments with a length of
Examples include strand-like materials and mat-like materials. Further, the surface of the reinforcing glass fiber may be treated with a binder in order to improve bonding with polypropylene. In the method of the present invention, a preformed body 2'' made of vinyl chloride resin or ABS resin is provided with the above-mentioned extensible base fabric 5.
Alternatively, a preformed body 9″ having a foam layer provided with a base fabric 5 having extensibility is formed so that the surface on which the base fabric is not provided and the inner surface of the molding die 10 or the molding die 12 are Polypropylene is placed along the inner surface of the mold so as to face each other, and polypropylene is supplied into the mold while at least the portion in contact with the base fabric is molten, and pressure is applied to mold the polypropylene. At the same time, the coating layer 2 or the coating layer 9 formed from the preform is laminated on the surface of the molded body using a base fabric to produce a molded body with a coating layer.

In the method of the present invention, polypropylene is supplied and pressurized into a mold in which a preformed body provided with a base fabric is placed, with at least a portion of the polypropylene in contact with the base fabric being molten. Any known molding method may be used as long as a molded article can be formed, and injection molding is usually the most suitable method, especially when polypropylene containing reinforcing glass fiber is used as the polypropylene. , the compression molding method is the most suitable.

Specific embodiments of the method of this invention include, for example:
The covering preform 2'' made of vinyl chloride resin or ABS resin provided with the above-mentioned extensible base fabric 5 is fixed to the surface without the base fabric (i.e. resin surface) for injection molding. A movable mold 1 corresponding to the fixed mold is arranged along the inner surface of the mold so that it faces the inner surface of the mold 10.
1 to the fixed mold, close the mold, and enter the inside of the mold.
Polypropylene is injected in a molten state heated to about 210 to 300°C, and at the same time as the injection molding, a resin coating layer formed from the preform is applied to the injection molded product. A method may be mentioned in which the molded article 1 with a coating layer is formed by laminating the molded article 1 on the surface of the substrate 3 with the base fabric 5 interposed therebetween.

Further, as another specific embodiment of the method of the present invention, for example, a covering preform 9'' having a foam layer provided with the above-mentioned extensible base fabric 5, The reinforcing glass fibers are placed along the inner surface of the female mold 12 for compression molding so that the unprovided surface (i.e. surface material surface) faces the inner surface of the female mold 12 for compression molding, and the reinforcing glass fiber is introduced into the female mold. A sheet made of polypropylene, in which at least the polypropylene on the side in contact with the base fabric is molten, is pushed into the male mold 13 and then compressed and molded under pressure, as shown in FIG. 4. At the same time as the compression molding, a foam covering layer formed from the preformed body is laminated on the surface of the compression molded body 3'' via the base fabric 5 to form a molded body 1 with a covering layer. can be mentioned.

In FIG. 3, a preformed body 2 for covering made of vinyl chloride resin or ABS resin is provided with a base fabric 5 having extensibility.
Instead of ``, it is possible to use a covering preform 9'' having a foam layer provided with an extensible base fabric 5,
In addition, in FIG. 4, instead of the coating preform 9'' having a foam layer provided with a base fabric 5 having extensibility, vinyl chloride-based resin or AB
A covering preform 2'' made of S resin can be used.

In the above-mentioned compression molding, the polypropylene sheet containing reinforcing glass fibers during compression molding was approximately 210
It is necessary to heat to ~300'C to melt at least the polypropylene on the side in contact with the base fabric.

In other words, the adhesive strength between the surface of the polypropylene molded body containing reinforcing glass fibers and the foam coating layer or the resin coating layer is determined by the adhesive force between the base fabric provided on the preform and the molten polypropylene. The maximum value is reached when the base fabric is impregnated with polypropylene and an anchoring effect is obtained by contacting under pressure. In addition, in the method of the present invention, the foam coating layer 9 is one in which a hard resin layer 8 is bonded to one side of the foam layer 6, or the foam in the foam layer 6 has many closed cells. If a material having heat resistance such as crosslinking is used, the decorative properties of the foam covering layer 9 will not deteriorate even if the foam covering layer 9 comes into contact with the molten polypropylene. preferable.

According to the method of this invention, vinyl chloride resin or AB
A resin coating layer made of S-based resin or a foam coating layer can be obtained.

The molded article with a coating layer of the present invention is a polypropylene molded article having a beautiful coating layer with excellent durability, so it can be used for various decorative purposes such as cases for furniture, electrical appliance cases, power pans, etc. can be used.

Examples and comparative examples are shown below.

In the following description, parts indicate parts by weight. Example 1 100 parts of vinyl chloride polymer (degree of polymerization: 700), AB
A vinyl chloride-based resin molded by a calendar roll method using a resin composition consisting of 45 parts of S resin, 5 parts of ethylene-vinyl acetate copolymer, epoxidized soybean oil, 4 parts of tin composite, and 4 parts of brown pigment. Resin sheet (average thickness: 0.35
? ) is printed with wood grain on the surface, and on the back side is a woven fabric made of acrylonitrile-vinyl chloride copolymer fiber (manufactured by Kanebuchi Kagaku Kogyo Co., Ltd., Kanekalon (registered trademark), average thickness:
Approximately 0.

(average density: 52 wales/inch and 52 courses/inch) were bonded together by wet lamination using a urethane bonding agent to form a sheet provided with a base fabric having extensibility.

This vinyl chloride resin sheet with a stretchable base fabric is vacuum-formed so that it corresponds to the inner surface of an injection mold. A preformed body made of resin for coating was formed.

This preform is placed along the inner surface of a fixed mold for injection molding, the mold is closed, and molten polypropylene heated to approximately 230°C is injected into the mold. After molding, the mold was cooled, and the mold was opened to take out the molded product with the coating layer.

This molded article with a coating layer had a beautiful wood grain pattern in which a vinyl chloride resin coating layer was integrally laminated on the surface of a polypropylene molded article.

A part of this molded article with a coating layer was cut out and the adhesive force between the vinyl chloride resin coating layer and the polypropylene 7 molded article was measured. The peel strength (18C
8) was 2.5k9/An.

Example 2 ABS resin (acrylonitrile content: 25% by weight, butadiene content: 3% by weight, styrene content;
45% by weight) 1 (1) part and higher alcohol (number of carbon liters;
16 to 18) Wood grain printing is applied to the surface of an ABS resin sheet (average thickness: about 0.5 wt) formed by a calendar roll method using a resin composition consisting of 1 part,
On the back side of the sheet, a woven fabric made of acrylonitrile-vinyl chloride copolymer fiber of the same type as used in Example 1 was joined in the same manner as in Example 1, and a base fabric with extensibility was provided. was formed.

Next, a preform was formed in the same manner as in Example 1 except that the sheet provided with the extensible base fabric described above was used, and the preform was injection molded with polypropylene to form a coating. A layered molded product was obtained.

This molded product with a coating layer has a coating layer with a beautiful wood grain pattern laminated on the surface of a polypropylene molded product, and when the adhesive strength was measured in the same manner as in Example 1, it was found that the molded product was formed. The peel strength (180 degrees), which indicates the adhesive strength between the polypropylene and the ABS resin coating layer, is 2.
It was 3k9/CTrl.

Example 3 Semi-hard polyurethane foam sheet (foaming ratio: 1
A polyurethane film (thickness: 5μ) was laminated on one side of the 5x, average thickness: 4w0n), and the same type of acrylonitrile-vinyl chloride copolymer as used in Example 1 was laminated on the other side. Woven fabrics made of combined fibers were bonded together by wet lamination using a urethane bonding agent to form a sheet provided with a base fabric having extensibility.

Next, a preform was formed in the same manner as in Example 1 except that the sheet provided with the extensible base fabric described above was used, and the preform was injection molded with polypropylene to form a coating. A layered molded product was obtained.

This molded article with a covering layer has a foam covering layer, which is made of a semi-rigid polyurethane foam and a polyurethane film bonded to one side, integrally laminated on the surface of a polypropylene molded article, and has a good appearance. When the adhesive force was measured in the same manner as in Example 1, the peel strength (180
degree) was 2.8k9/Cm.

Example 4 Chemically crosslinked polyethylene foam sheet (manufactured by Furukawa Electric Co., Ltd., Form Ace (registered trademark), foaming ratio: 5
1 (1) part of vinyl chloride polymer (degree of polymerization: 1300), phthalate ester of alcohol having 7 to 10 carbon atoms, 45
2.5 parts of a calcium and zinc complex, 15 parts of calcium carbonate, and 4 parts of a brown pigment. Sheet (average thickness; 0.25TWi
) and ABS resin (acrylonitrile content: 25% by weight, butadiene content: 3%, styrene content: 4
5% by weight) and 100 parts of higher alcohol (carbon number: 16~
18) A sheet for resin layer 8 of ABS resin (average thickness: 0.25wr!n) molded by a calendar roll method using a resin composition consisting of 1 part of chlorinated polypropylene resin An ABS resin sheet in which a vinyl chloride resin sheet and an ABS resin sheet are bonded to both sides of the resulting polyethylene foam sheet, which is bonded by two-layer dry lamination using a bonding agent and a urethane bonding agent. A woven fabric made of the same type of acrylonitrile-vinyl chloride copolymer fiber as used in Example 1 was bonded to the surface by wet lamination using a urethane bonding agent to provide a base fabric with extensibility. A sheet was formed.

Next, a preform was formed in the same manner as in Example 1 except that the sheet provided with the extensible base fabric described above was used, and the preform was injection molded with polypropylene to form a coating. A layered molded product was obtained.

This molded article with a coating layer has a foam coating layer on the surface of a polypropylene molded article, in which a vinyl chloride resin layer and an ABS resin layer are bonded to both sides of a polyethylene foam, respectively. It is laminated, has a good appearance, and can be easily printed on the surface. When the adhesive strength was measured in the same manner as in Example 1, the adhesive strength between the ABS resin layer and the polypropylene molded body was The peel strength (180 degrees) was 2.2k9/C:7A.

Example 5 Vinyl chloride polymer (degree of polymerization: 1300) 100
A vinyl chloride resin sheet (average thickness;
0.3Trn), the wood grain is printed on the surface, and the back side is
Woven fabrics made of acrylonitrile-vinyl chloride copolymer fibers of the same type as used in Example 1 were joined in the same manner as in Example 1 to form a sheet provided with a base fabric having extensibility.

This sheet provided with a base fabric having extensibility was vacuum formed to fit the inner surface of a female mold for compression molding, and a sheet made of vinyl chloride resin with a base fabric having extensibility was molded to fit the inner surface of a female mold for compression molding. A preform was formed. This preformed body is placed along the inner surface of the compression molded body in the female mold, and is inserted into the female mold at 230
A polypropylene sheet containing reinforcing glass fibers in a state where the polypropylene is molten by heating to temperatures above ℃ (glass fiber length: 2077~117! or more, glass fiber diameter: 13μ, glass fiber content: 4%) ) was pressed into a male mold and compression molded, and then the mold was cooled and divided into male and female parts, and the molded product with the coating layer was taken out. This molded product with a resin layer has a beautiful wood grain pattern, and is made by integrally laminating a vinyl chloride resin coating layer on the surface of a polypropylene molded product containing reinforcing glass fibers. When the adhesive force between the vinyl chloride resin coating layer and the polypropylene containing reinforcing glass fiber was measured in the same manner as in Example 1, the peeling rate was 50Wr! ! t/
The peel strength in minutes (180 degrees) was 2k9/d.

Example 6 A polyurethane film (thickness: 5"μ) was laminated on one side of a semi-rigid polyurethane foam sheet (expansion ratio: 6 times, percentage of closed cells: 80%, average thickness: 4 sheets). A woven fabric made of the same type of acrylonitrile-vinyl chloride copolymer fiber as used in Example 1 was bonded to the other side by wet lamination using a urethane bonding agent to form an extensible base. A sheet provided with cloth was formed.

Next, a preform was formed in the same manner as in Example 5, except that the sheet provided with the extensible base fabric described above was used, and the preform was used to form a polypropylene sheet containing reinforcing glass fibers. was compression-molded to obtain a molded article with a coating layer.

This molded article with a covering layer is made by integrally laminating a foam covering layer made of a semi-rigid polyurethane foam with a polyurethane film bonded to one side on the surface of a polypropylene molded article containing reinforcing glass fibers. It has a good appearance and can be easily printed on the surface.
When the adhesive strength was measured in the same manner as in Example 1, the peel strength (180 degrees), which indicates the adhesive strength between the semi-rigid polyurethane foam layer and the polypropylene containing reinforcing glass fibers, was 2.
．． It was 6k9/CTfi.

Example 7 100 parts of vinyl chloride polymer (degree of polymerization: 1300), A
30 parts of BS resin and 5 parts of ethylene-vinyl acetate copolymer
A vinyl chloride resin sheet (average thickness: 0.3
rfun), and the back side is printed with crimped nylon fiber Tricotto (manufactured by Teijin Ltd., Willy Nylon Tricotto (registered trademark), average density: approximately 55 courses/inch and approximately 40 wales/inch. ) were bonded together by wet lamination using a urethane bonding agent to form a sheet provided with a base fabric having extensibility.

Next, a preform was formed in the same manner as in Example 5, except that the sheet provided with the extensible base fabric described above was used, and the preform was used to form a polypropylene sheet containing reinforcing glass fibers. was compression-molded to obtain a molded article with a coating layer. This molded article with a coating layer is a molded article made of polypropylene containing reinforcing glass fibers, and the surface of the molded article is made of polyvinyl chloride. It has a beautiful wood grain pattern in which a coating layer made of polyvinyl chloride resin is laminated over the entire body, and in the same manner as in Example 1, a coating layer made of vinyl chloride resin and polypropylene containing reinforcing glass fibers are combined. When the adhesive strength was measured, the peel strength (180 degrees) at a peel rate of 5-/min was 2k9/Cm.

Comparative Example 1 Wood grain printing was applied to the surface of the same vinyl chloride resin sheet (average thickness; 0.35 order) as used in Example 1, and the melt index (■) was 2f on the back side.
A sheet having an adhesive layer (thickness: 100 μm) was formed by laminating a film-like material of ethylene-vinyl acetate copolymer with a vinyl acetate content of 5% and having a vinyl acetate content of 5%.

Next, a preform was formed in the same manner as in Example 1 except that the sheet provided with the adhesive layer described above was used, and the preform was used to injection mold polypropylene to form a coating layer. I got a body.

However, in the molded body with a coating layer, the vinyl chloride resin coating layer easily peels off from the edges of the molded body, and the coating layer lifts up in the recessed parts of the molded body, making it impractical. It was worthless. Brief explanation of drawings 1st
The figure is a cross-sectional view of one embodiment of the molded article with a coating layer of the present invention, FIG. 2 is a cross-sectional view of another embodiment of the molded article with a coating layer of the present invention, and FIG. FIG. 4 is a sectional view schematically showing a state in which a molded article with a coating layer is manufactured by injection molding, which is an embodiment of the method of the present invention, and FIG. 4 is a sectional view showing another embodiment of the method of the present invention. FIG. 2 is a cross-sectional view schematically showing a state in which a molded article with a coating layer is manufactured by compression molding as an example.

1... Molded article with coating layer, 2... Resin coating layer made of vinyl chloride resin or ABS resin, 2
″... Preformed body, 3... Molded body made of polypropylene, 3″... Molded body made of polypropylene containing reinforcing glass fiber, 4, 4″, 4 ″，4
"''... Binder layer, 5... Base fabric having extensibility, 6... Foam layer, 7... Surface material layer,
8... Resin layer, 9... Foam coating layer, 9''
...Preformed body, 10 ... Fixed mold, 1
1...Moving mold, 12...Female mold, 1
3...Male mold.

Claims (1)

[Scope of Claims] 1. A coating layer in which a resin coating layer or a foam coating layer made of a vinyl chloride resin or an ABS resin is laminated on the surface of a polypropylene molded article with a base fabric having extensibility interposed therebetween. Attached molded body. 2. A covering preform made of vinyl chloride resin or ABS resin provided with a base fabric having extensibility, or a covering preform having a foam layer, with its side not provided with the base fabric. Place the polypropylene along the inner surface of the mold so that it faces the inner surface of the mold, and add the polypropylene into the mold with at least the portion in contact with the base fabric melted. A method for producing a molded article with a coating layer, which comprises supplying and pressurizing the polypropylene to simultaneously form a coating layer formed from the preformed article on the surface of the molded article using a base fabric.