JPH04299172A - Method for pressing velvex metal plate - Google Patents

Abstract

PURPOSE:To protect Velvex tone resin surface or painting surface of a molded item against deformation, damage or exfoliation due to molding stress when producing a molded item such as a metallic container or a cap by employing a Velvex tone metal plate in three-dimensional press. CONSTITUTION:A Velvex tone metal plate is pressed by applying at least an anchor layer 2 and a resin layer 3 mixed with fine beads, in this order, on the surface of a metal plate 1 and then pressing the metal plate 1 by means of a press mold 8.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for press-molding a velvet-like metal plate that exhibits a soft feel, texture, and appearance, such as a flocked or brushed feel.

0002

[Prior Art] Conventionally, when manufacturing metal containers and caps with a velvet-like surface with fine irregularities and a desired pattern or coloring applied to the surface, metal plates made of aluminum or iron have been used. A Velvex metal plate formed by applying a resin paint mixed with fine beads on the surface is molded into a three-dimensional article of a prescribed shape, such as a container or a cap, by a prescribed press molding method, and then the Velvex metal plate on the surface of the article is formed. Paintings were applied to the surface of the tones using printing methods such as silk screen printing, transfer methods such as sublimation transfer, hot stamping, masking painting, etc.

[0003] However, the above method is time-consuming and
It is not suitable for mass production, and since the object to be painted is a three-dimensional object, it is necessary to paint in two steps, for example, on the top and side surfaces.If the pattern requires continuity, continuous painting is required. It was quite difficult to do so.

[0004] Therefore, after a flat metal plate is decorated by a printing method, a sublimation transfer method, a hot stamping method, a masking method, etc., the decorated plate is molded by a press molding means to form a container. , painting and press molding of items such as caps.

[0005] However, since the painted surface of the metal plate comes into direct contact with the mold of the press molding means and is pressurized, peeling phenomenon and damage occur to the painted colorant and Velvex painted surface. This is a factor that reduces product yield.

[0006]

Purpose of the Invention The present invention provides a method for manufacturing molded products such as metal containers and caps by performing three-dimensional press molding or painting using a velvex-like metal plate, and a velvex-like resin surface on the surface of the product. The purpose of this invention is to manufacture the painted surface without causing any damage or peeling phenomenon.

[0007]

[Structure of the Invention] A first aspect of the present invention is to coat a velvet-like metal plate, which has an anchor coat layer and a fine bead-containing resin layer on the surface of the metal plate in this order, with a protective sheet. This is a press-molding method for a Velvex metal plate, which is characterized in that a plate coated with the above-mentioned material is press-molded into a desired shape in a mold using a press-molding means.

[0008] A second aspect of the present invention also provides a step of manufacturing a Velvex metal plate by sequentially applying an anchor coat layer and a fine bead-containing resin layer to the surface of the metal plate, and using a plate as an object to be transferred, and superimposing a sublimation transfer sheet on the surface of the bead-containing resin layer of the plate and transferring a desired pattern by heating and sublimation;
A step of coating the metal plate after sublimation transfer with a protective sheet, a press molding step of molding the plate covered with the protective sheet into a desired shape in a mold using press molding means, and a step of molding the plate after molding. This is a press-molding method for a Velvex metal plate, characterized by comprising a step of removing it from a mold, and a step of peeling and removing the protective sheet from the surface of the molded plate.

[0009]

[Example] The first invention of the present invention will be described in detail with reference to the drawings. Fig. 1 is a side view illustrating the manufacturing process of a velvet-like metal plate in the method of the present invention. a) Metal plates (1) such as aluminum thin plates, iron thin plates, steel thin plates, tin plates, zinc plates, phosphor blue steel thin plates, stainless steel thin plates (for example, 100 μm thick)
Anchor coat layer (2) is applied using, for example, epoxy resin to the surface of
(b) A velvex-like resin layer (3) (for example, a coating film thickness of about 20 μm to 25 μm) is applied to the surface of the coating layer (2) to produce a metal plate (A) with a velvex-like surface.

[0010] The surface of the plate (1) is subjected to degreasing treatment if necessary, and if the plate (1) is a thin aluminum plate, the surface of the plate (1) is coated with:
Alumite treatment may be performed after degreasing treatment.

The velvex-like metal plate (A) shown in FIG. 1(b) manufactured in this way is coated with an appropriate method such as printing, sublimation transfer, hot stamping, or masking coating on its surface. Through various means such as the law,
Apply desired patterns, colors, characters, and symbols as necessary.

Next, as shown in FIG. 5(a), the velvet-like resin layer (3) of the metal plate (A) is
A protective sheet (7) (for example, 10 μm thick) is placed on the surface.
~1000 μm) and coat the plate (around 1000 μm).
A) Press molding means (D) Mold (8) (male mold)
Figure 5(b)
) to perform press molding, and after the molding is completed, the protective sheet (7) is peeled off and the molded plate (A) is removed from the mold (8), as shown in Figure 5 (c).
) A molded product (E) with a painted velvet-like resin layer (3) surface is manufactured. Note that the excess molding portion around the molded product (E) is removed by cutting along the cutting line (F) during or after molding.

[0013] The protective sheet (7) may be directly coated on the surface of the resin layer (3) of the metal plate (A), but one side of the sheet (7) may be coated with an adhesive layer,
The plate (with a rewetting adhesive layer)
A) It is desirable that it can be temporarily fixed to a surface. In addition, the sheet (7) is preferably a sheet with some elasticity, but for example, a film made of resin such as polyethylene, polyvinyl chloride, polyester, or polypropylene with a removable adhesive layer on one side (for example, a film with a thickness of 10 μm) ~60μm
(front and back) or elastic rubber sheets.

[0014] Further, in the first invention, after the press molding, on the surface of the velvet-like molded product (E),
Patterns, coloring, characters, symbols, etc. may be applied by appropriate means.

Next, the second method of the present invention is as shown in FIG.
A method in which a velvex-like metal plate (A) is manufactured by the method shown in a) and FIG. 1(b), and then the velvex-like resin layer (3) is decorated using a sublimation transfer method. It is.

[0016] As the resin forming the velvex-like resin layer (3) in this second invention, acrylic resins, polyester resins, polyurethane resins, vinyl resins that can be dyed by sublimation with sublimable dyes are used. , epoxy resin, melamine resin, alkyd resin, and thermoplastic resin, thermosetting resin, or ultraviolet curable resin, two-component curing The mold resin is used as a binder resin, and thermosetting resin beads or thermoplastic resin beads (e.g., particle diameter 10 μm) are added to the mold resin as a binder resin.
~100 μm).

FIG. 2 is a side view illustrating a method of sublimation transfer onto the resin layer (3), showing the metal plate A coated with the velvex-like resin layer 3 capable of sublimation transfer.
is placed on a predetermined surface plate C, the sublimation pattern ink layer 5 of the sublimation transfer sheet B is stacked facing the velvet-like resin layer 3 of the plate A, and the transfer sheet base material 4 is heated from above by a heater. Using the board 6, apply no pressure or slightly pressurize (100 g/cm2
) for an appropriate time (e.g., about 30 sec to 80 sec) while heating (e.g., 150° C. to 200° C.) the sublimable pattern ink layer 5 to transfer the sublimable dye in the ink layer 5 to the resin layer 3 by sublimation. Then, as shown in FIG. 3, a sublimation transfer pattern (3a) is applied to the resin layer (3).

Next, as shown in FIG. 4, a resin layer (3) is formed.
The surface is covered with a protective sheet (7). The protective sheet (7) may be coated on the surface of the resin layer (3) of the metal plate (A) as it is, but it is also possible to coat the surface of the resin layer (3) of the metal plate (A) as it is, but it is also possible to coat the surface of the resin layer (3) of the metal plate (A) with an adhesive layer and a rewetting adhesive layer on one side of the sheet (7). It is desirable that it can be temporarily fixed to the surface of the plate (A) using a material. In addition, the sheet (7) is preferably a sheet with some elasticity, but for example, it is made of resin such as polyethylene, polyvinyl chloride, polyester, polypropylene, etc., which has a removable adhesive layer (film thickness 10 μm to 60 μm) on one side. It is made of plastic film or elastic rubber sheet.

Next, as shown in FIG. 5(a), the metal plate (A) covered with the protective sheet (7) is
is loaded into the mold (8) (between the male mold and the female mold) of the press molding means (D), and the press molding means (D) is operated to perform press molding, and after the molding is completed, , by peeling off the protective sheet (7) and removing the molded plate (A) from the mold (8), the surface is covered with the painted velvet-like resin layer (3) as shown in FIG. 5(c). A molded product (E) is produced. Note that the excess molding portion around the molded product (E) is removed by cutting along the cutting line (F) during or after molding.

[0020]

According to the method of the present invention, an anchor coat layer is interposed between the metal plate and the velvex-like resin layer, and a protective sheet is coated on the velvex-like surface of the metal plate. Since the molded product is press-molded, it is possible to avoid damage or peeling of the velvet-like resin layer on the surface of the molded product due to molding stress.

Furthermore, according to the method of the present invention, if a relatively elastic sheet is used as the protective sheet, compressive deformation due to press compressive stress of the bead particles imparting a velvet texture can be suppressed. , can retain its texture.

[0022] Furthermore, since the patterns and colors applied to the velvex-like resin layer are applied by sublimation transfer,
As long as the velvet-like resin layer is not damaged or peeled off, the pattern and colored surface will not be destroyed.

[0023]

[Effects of the Invention] The method of the present invention provides a velvet-like texture with a finely uneven surface on the surface of a molded product, and it is possible to decorate the molded product by sublimation transfer based on that texture.
It has the advantage of being able to mass-produce metal press-molded products with a desired pattern without damaging the velvet-like texture, and exhibits excellent effects.

[Brief explanation of drawings]

FIG. 1 is a side view illustrating a method for manufacturing a velvet-like metal plate according to the method of the present invention.

FIG. 2 is a side view illustrating the sublimation transfer painting method in the method of the present invention.

FIG. 3 is a side view of a velvet-like metal plate with sublimation transfer painting applied in the method of the present invention.

FIG. 4 is a side view showing a state in which the surface of a velvet-like metal plate with sublimation transfer painting applied in the method of the present invention is covered with a protective sheet.

FIG. 5 is a side view illustrating the press molding method of the present invention.

[Explanation of symbols]

1...Metal plate 2...Anchor coat layer
3...Velvex-like resin layer 3a...Sublimation transfer painting section 3b...Beads 4...Transfer base material 5...Sublimation pattern ink layer 6...Heater board 7...Protection sheet 7a...Temporary adhesive layer 8...Mold A...Bell Vex style metal plate B...Sublimation transfer sheet C...Surface plate D...Press molding means E...Molded product F...Cutting line

Claims (2)

[Claims] [Claim 1] A velvet-like metal plate having an anchor coat layer and a fine bead-containing resin layer applied to the surface of the metal plate at least in sequence is coated with a protective sheet, and the plate covered with the protective sheet is subjected to press molding means. A method for press-forming a Velvex metal plate, characterized by press-forming it into a desired shape using a mold. 2. A step of manufacturing a Velvex metal plate by sequentially applying an anchor coat layer and a resin layer mixed with fine beads on the surface of a metal plate, and using the manufactured metal plate as a transfer target. A step of superimposing a sublimation transfer sheet on the surface of the bead-containing resin layer and heat sublimation transfer of a desired pattern, a step of covering the metal plate after the sublimation transfer with a protective sheet, and a press molding means for the plate covered with the protective sheet. A press molding step of molding the plate into a desired shape using a mold, a step of removing the molded plate from the mold, and a step of peeling and removing the protective sheet from the surface of the molded plate. A distinctive press molding method for Velvex metal plates.