JPH0764948B2 - Recycled composition of resin with coating film and method of regenerating the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a resin or film with a coating film.
A more detailed description will be given of a reclaimed composition for a resin with a stick and a method for reclaiming the same. A resin with a coating film, which is a raw material for reusing a vehicle bumper , an automobile grill, or the like, or plating.
Attached to the resin was ground, recycle coated films with resins or
The present invention relates to a reclaimed composition of a plated resin and a reclaiming method thereof.

[0002]

2. Description of the Related Art Conventionally, vehicle bumpers and automobile grease
Le etc. is formed of a polyolefin resin, ABS resin or the like, coating is applied as a surface treatment of the resin, or
It is plated . Bumpers for these vehicles ,
It was difficult to regenerate the moving car grill and so on, and it was discarded when the vehicle was scrapped or when a defective product was generated. In recent years, due to global environmental problems and global resource problems , it has been strongly demanded to recycle synthetic resins such as vehicle bumpers and automobile grills . For this reason, various methods have been proposed, such as removing the coating film or plating from the surface of a polyolefin resin such as a vehicle bumper or an automobile grill , and then crushing or melting the resin to recycle it. .

[0003]

However, the work of removing the coating film and the plating from the surface of the polyolefin resin for the bumper for vehicles , the grill for automobiles, etc. is complicated and the working efficiency cannot be improved, resulting in cost increase. It had drawbacks. Also, it is rare that the same components are recovered,
When regenerating a resin consisting of a mixture, the interface between the resins
It was weak and could not be recovered and used. Also, without removing the coating film and plating from the resin surface ,
When a moving car grill is crushed and extruded into a sheet from an extruder, a part that does not dissolve in the coating film and plating occurs, cracks occur from this coating film part or plating part, and the polyurethane primer of the coating film Generated a decomposed gas and the like, and a portion having low strength was partially generated in the recycled product, which might cause a defect in the product.

The object of the present invention is to provide a bumper for a vehicle and an automobile vehicle.
It is possible to treat the resin such as ril and the like at the same time, it is not necessary to remove the coating film and the plating from the surface of the polyolefin resin, the work efficiency can be improved, and cracks may occur from the coating film portion. It is possible to effectively eliminate the decomposition gas generated by the polyurethane primer of the coating film, reactivate the polyurethane primer, and act as an adhesive for the mixture. Without causing
Strength is strong, natural even coating film with a resin excellent in moldability or
It is intended to provide a reclaimed composition of a plated resin and a reclaiming method thereof.

[0005]

The present invention has been made in view of the above-mentioned problems, and the reclaimed composition of a resin with a coating film or a resin with a plating according to claim 1 is a raw material for recycling. Coating resin with film or resin with plating
Or crushed while plating with the same or different
40 to 70% by weight of crushed resin made from raw materials
5-40% by weight, inorganic filler 15-25% by weight, and thermoplastic resin 0-30% by weight are added,
These are heated and mixed at a temperature of 170 ° C. or higher, and the mixture is formed into a sheet shape.

The resin or film with a coating film according to claim 2
Tsu regeneration composition of keys with resin, is a starting material coating layer with a resin or a bumper-plated resin vehicle recycling or
Or an automobile grill . The method of reproducing paint film with a resin or plated with resin according to claim 3, which is a raw material of recycled paint film with a resin or plating
Per The resin was pulverized remains with the coating film or plating, before
The fibrous material, an inorganic filler, and a thermoplastic resin, if necessary, are added to the ground resin made of the same or different raw material, and the mixture is heated and mixed at a temperature of 170 ° C. or higher to form pellets, The pellets are supplied to a molding machine, formed into a sheet shape by the molding machine, and then the composition in the sheet shape is heated to a temperature of 170 ° C. or higher and press-formed into a desired shape.

[0007]

Function: A resin with a coating film according to claim 1 of the present invention or
According to regeneration composition of the plating with the resin, the paint film with a resin or plated with resin which is a raw material for recycling paint film or
Since it is pulverized and used with the plating still attached, the work of removing the coating film or plating can be omitted, the work efficiency can be significantly improved, and the same or different
Since 40 to 70% by weight of the pulverized resin made from the raw material is used, it is useful for resource saving. To this pulverized resin, a fiber material, an inorganic filler and, if necessary, a thermoplastic resin are added, and a mixture thereof is added. Since it was heated and mixed at a temperature of 170 ° C or higher,
The polyurethane primer of the coating film is heated and melted, the coating film and plating are sufficiently melted and reactivated, and there is no risk of cracking from the coating film portion, and the fibrous material, the inorganic filler, and the thermoplastic resin. Dispersed in. The reactivated paint film polyurethane primer and thermoplastic resin are mixed into fibrous fibers and act as an adhesive, the fibers clinging to each other's resin and forming a binder.
And the strength of the composition is enhanced.

[0008] coating layer with a resin according to claim 3 of the present invention or
Or , according to the method of recycling plated resin, the resin with a coating film made of the same or different raw material for recycling
Or because the plating with resin are utilized in pulverized remains with the coating film or plated, can omit the work of removing the coating film, it is possible to significantly improve the work efficiency and the grinding resin, a fibrous , An inorganic filler, and optionally a thermoplastic resin, and the mixture is heated to a temperature of 17
Since the mixture is heated and mixed at 0 ° C. or higher, the polyurethane primer and the plating of the coating film are melted by heating, the decomposed gas and the like generated by the polyurethane primer are eliminated, and the polyurethane primer is reactivated. The reactivated polyurethane primer is dispersed in the fibrous material, the inorganic filler, and the thermoplastic resin. The reactivated paint film polyurethane primer and thermoplastic resin are mixed into fibrous fibers and act as an adhesive, the fibers clinging to each other's resin and forming a binder.
And the strength of the composition is enhanced. Next, the sheet-shaped composition was heated to a temperature of 170 ° C. or higher and press-molded into a desired shape, so that the composition has high strength and excellent moldability.

[0009]

[Examples] The resin or film with a coating film according to the present invention is described below.
A reclaimed composition of a resin with a stick and a regenerating method thereof will be described in detail. Resin with coating film or resin with plating according to the present invention
The composition for regenerating fats is mainly used as a raw material for recycling, such as vehicle bumpers and automobile grills . Resin with coating film or plating, which is a raw material for recycling, is P
Polyolefin resin such as P resin and PE resin , or A
BS resin, acrylic resin, styrene resin, etc.
Is formed of a mixed resin , and the coating film is formed of urethane paint or the like.

Resin with a coating film, which is a raw material for the above recycling
Alternatively, the plated resin is ground to a diameter of about 2 mm with the coating film or the plating still attached. A fiber 25 composed of 40 to 70% by weight of the crushed resin, polyester fibers disintegrated into a fiber length of 2 to 5 mm, cotton fibers, or mixed fibers of these mixed fibers, or wood fibers, paper fibers, or the like. ~ 4
0% by weight and 15 to 25% by weight of inorganic filler such as talc,
And, if necessary, 0 to 30% by weight of a thermoplastic resin in pellet form is added. The mixture is mixed with a Hensyl mixer and the urethane reactivation temperature is 170 ° C or higher, for example 170 ° C.
Heat mix at ~ 190 ° C.

By heating and mixing the above mixture with a Hensil mixer, a polyurethane primer for a coating film and
The plating is melted by heating and reactivated. This polyurethane primer is dispersed in a mixed fiber such as polyester fiber and cotton fiber mixed in crushed resin, or a fiber material such as wood fiber and paper fiber, an inorganic filler, and a thermoplastic resin. The polyurethane primer and the thermoplastic resin of the re-activated coating film mixed fiber and wood fiber are mixed fibrous in paper fibers, acts as an adhesive, or
Fibers entangle with each other's resin and act as a binder
The strength of the mixture is increased.

The mixture is heated and mixed with a Hensil mixer to form pellets, and the pellet mixture is supplied to an extruder. This mixture is extruded from an extruder to obtain a sheet-shaped composition having a thickness of 1 to 5 mm. It is also possible to perform injection molding using an injection molding machine instead of the extrusion molding machine. Further, in the present embodiment, the vehicle bumper and the automobile grill were the main components of the recycled material, but the present invention is not limited to this, and other coating film-coated resin or plated resin, for example, the outer frame of a television, Telephone
Etc. can be used. Further, in the present embodiment, the pellet-shaped thermoplastic resin was added, but when a flexible sheet is obtained, this thermoplastic resin may not be added. When the content of the crushed resin is 70% by weight or more, heat resistance, dimensional stability, and strength are deteriorated, which is not preferable, and when the content of the fiber is 40% by weight or more, moldability is deteriorated and economical extrusion molding cannot be performed. is there.

Next, the sheet-shaped composition is heated to 170 ° C. or higher and press-molded into a desired shape with a press molding die to form a door base material for vehicles, a molded ceiling base material for vehicles, a back garnish, etc. The interior base material for vehicles and other base materials are formed. The sheet-shaped composition may be press-molded using a heat-molding die. Further, the press conditions such as the mold temperature, the press time and the press pressure can be appropriately changed according to the use of the interior base material.

Next, the resin with a coating film according to the present invention or
A specific example of the method of regenerating the plated resin will be described in detail.
Each bumper A, B, C made of a commercially available PP resin was pulverized to a diameter of about 2 mm with a coating film, and each of these 6
3 parts by weight of a 2 mm long fiber made of a mixed fiber of polyester and cotton, and 2 parts by weight of talc as an inorganic filler were mixed with 1 part by weight and heated and mixed at a temperature of 170 ° C. or higher with a Hensyl mixer to form pellets. . The pellets were supplied to an extruder to form sheets A, B and C having a thickness of 3.0 mm. Various physical properties of these sheets A, B, and C are shown in Table 1 in comparison with a commercially available sheet in which nothing is added to the bumper A. As is clear from Table 1, the present invention has sufficient strength and achieves the intended purpose.

[0015]

[Table 1]

Next, when treating the resins of the mixture simultaneously
A specific example will be described in detail. Sheet A in the above embodiment
The bumper A made of commercially available PP resin,
A commercially available product made of PP resin for physical properties of molded sheets D and E formed by adding 3 parts of mixed fiber, 2 parts of talc to 6 parts of recycled product, and 5% and 10% of ABS resin of the recycled product. The results are shown in Table 2 in comparison with the case where the product bumper A is 100%.

[0017]

[Table 2]

[0018]

The coating film with a resin or higher according to the present invention, according to the present invention or
The composition and method of one example of a reclaimed composition of a resin with plating and a method of reclaiming the same. According to such a composition and method, from the same or different raw material which is a raw material for recycling.
The paint film-coated resin or plated with lacquered film also becomes
Since it is crushed and used with plating , the work of removing the coating film or plating can be omitted, the work efficiency can be significantly improved, and the crushed resin can be made of fiber, inorganic filler, and If necessary, a thermoplastic resin was added, and the mixture was heated and mixed at a temperature of 170 ° C. or higher. Therefore, the coating film and the plating were melted by heating, and the polyurethane primer of the coating film was heated and reactivated. Can effectively eliminate the decomposition gas generated by the polyurethane primer of the coating film, the polyurethane primer of the coating film is mixed with the fibrous fibers, and acts as an adhesive, and the fibrous materials are bonded to each other's resin. As a tangled binder
And the strength of the composition is enhanced, and a regenerated composition of a resin with a coating film or a resin with a plating having high strength can be obtained.

The resin or plating with a coating film of the present invention
According to the method for reclaiming resin with resin , the sheet-shaped composition formed by the above method is heated to a temperature of 170 ° C. or higher and press-formed into a desired shape, so that the strength is high and the moldability and Resin or plating with a coating film that is highly economical
It is possible to obtain a method of regenerating the attached resin .

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C08K 7/02 KCJ C08L 101/00

Claims (3)

[Claims] 1. A coating film with a resin, which is a raw material for recycling or
Or crushed resin with coating film or plating , and crushed resin made from the same or different raw material 4
To 0 to 70% by weight, 25 to 40% by weight of fibrous material, 15 to 25% by weight of inorganic filler, and 0 to 30% by weight of thermoplastic resin are added, and these are added at a temperature of 170 ° C or higher. A regenerated composition of a resin with a coating film or a resin with a plating , characterized in that the mixture is heated and mixed to form the mixture into a sheet shape. 2. A coating film with a resin, which is a raw material for recycling or
Or plated resin is used for vehicle bumpers or automobile grease.
Paint film with a resin or regeneration composition of the plating with the resin of claim 1, wherein it is Le. 3. A coating film with a resin, which is a raw material for recycling or
Or a resin with plating is pulverized with a coating film or plating , and the pulverized resin made of the same or different raw material is added with a fibrous material, an inorganic filler, and optionally a thermoplastic resin, The above mixture is heated and mixed at a temperature of 170 ° C. or higher to form pellets, the pellets are supplied to a molding machine, formed into a sheet shape from the molding machine, and then the sheet-shaped composition is heated to a temperature of 170 ° C. or higher. Then, a method for regenerating a resin with a coating film or a resin with a plating is characterized by press-molding into a desired shape.