JPS5881136A - Manufacture of synthetic resin article - Google Patents

Abstract

PURPOSE:To obtain a synthetic resin article such as a compact vessel excellent in design and decorativeness, by carrying out injection molding using a mold having a pattern such as letters and a figure and fine latticed lines on the surface. CONSTITUTION:When it is required that a plurality of equi-spaced latticed lines 3' are formed on the pattern part 2' such as a figure on the surface 1a of the lid body 1 of a compact vessel thereby light is deffracted so that rainbowy colors appear thereon which make the design and decorativeness of the surface 1a excellent, a pattern 2 is formed on the surface of a mold 4 and the plurality of latticed lines 3 are scored in the surface. In some cases, such latticed lines may be scored in a place other than the surface on which the pattern such as letters or a figure is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention a, a compact container made of synthetic resin, etc., for storing cosmetics, σ, its use, design The surface of the lid as a container, and the surface of the lid as a container, are important to see if there are any traps.
1 for C, for example, a metallic pattern on the handle or a character 9 pattern rr
Where τ゛, where cold type is generally used, rI like this
Compact container r (toni.

Normally, one method is manufactured using the injection molding method, but the above-mentioned L
Metallic patterns and letter 9 designs RX, etc. (Additionally, RC is colored for the purpose of flattening the RC decoration, and RC is processed in a separate process after injection molding to provide color rendering properties.

If a method such as vapor deposition or printing 19a transfer is not used, it is necessary to use a method of decoration.
The problem is that the man-hours increase and the cost increases.

In this review, in view of the above circumstances, Table 1.
A pattern such as the letter 9 design is formed on the L, and fine lattice lines are formed on any of the other parts except for the pattern part by injection molding using a mold. Injection molding RC process involves transferring character 9 designs, etc., including the lattice 41 part of the Me mold, to the injection molded product. When injection molding the RX of the compact container, VC1C1 character 1 pattern is used. Forming the pattern book at the same time 1゛★,
The transferred grid line portion A is also subjected to visible light spectrum VC spectroscopy of the diffraction RC process and exhibits iris brilliance, and the grid lines are applied to contrast with the RR area. The purpose of this invention is to provide a method for manufacturing a resin article that is 7% less likely to form a decorative surface in which the pattern floats and disappears.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment shown in the figure shows an example in which the technology according to the present invention is applied to a compact container. ! The pattern rz formed on the nla has a number of turns (turns), and the part of this pattern l has a large number of parallel rx at regular intervals (5 in 1 mm).
00 or more lattice lines (grooves) 3' are carved into the iris.Then, each of these many lattice lines 3' causes the white light to be folded once, creating an iris glow. A so-called diffraction grating is formed, which produces a series of visible light spectra.
Next, the Kyozo Manden of Zen body 1 having pattern 2'l including this grid #13' will be explained.

1. First, as shown in FIG. surface + arc, 荊KIノ (same as turning,
A pattern 2 rx is formed from a large number of gratings ls3 and W(
.

As a method of forming this pattern 2, an example is shown in FIG.
In the process shown in l, on top of that, a large number of parallel rx (1
500 or more lines per mm) grid lines (grooves) 3-... are carved into the primary T, IP! Figure 3 (blF(: shows 4 sea urchins,
After removing the lattice 111i13 from the remaining portions, where only the target pattern 2b remains, by a well-known method such as corrosion processing, this is removed and 7cf! If you finish the surface of A5,
The desired pattern 2 is formed.

Using this technique, the desired pattern 2 is formed, a mold with this pattern 2 is used, and a comparatively unfaithful example of the shrinkage rate of transparent and colorless RC-colored is PE.
T, PMMA, PC, 8AN.

When injection molded with synthetic resin such as PS, the injection molded product 1
In other words, the surface of the lid body L is faithfully transferred to pattern 2 or 11 of the upper mold 4, resulting in a lid body L having a pattern consisting of a large number of lattice lines 3' as shown in FIG. . Then, using the pattern 2'a of the lid body 1 and the many grid lines 3' of the IC 1 described above, white light is folded once, and the visible light spectrum for iris conversion etc. is shown in Table 1.
By the way, in the above example, a,)(
Is it a trap where the VC grid line 3' is formed only in the turn part?

In addition to forming pattern 2 on the mold, injection molding is similarly performed using the mold removed using the FC corrosion machining method (with only the turn 20 portion described above).
The so-called contrast that diffracts light only in the part of rz is reversed vc
It is possible to obtain a lid body having an ivy pattern.

In addition, it is possible to form a turn! on the back side of the lid body 1 by forming the turn 2 on the lower mold 5. In this case, the resin forming the body If it is transparent, then this) Turf 2'a Naturally, the table of cover base salary l [1
It can also be seen from 0iIl11.

One of the embodiments of the present invention is a container body made of a synthetic resin layer for containing milky lotion, cream, etc. It can be applied to molded products depending on the shape of the molded product.

Furthermore, the grid line 3...is limited to one of the illustrated examples, and even if the entire IC is formed in a curved shape, L%A is obtained.

Moreover, if the surface KAl, etc. on the opposite side to the direction in which the turn/ is formed is vaporized on top of this pattern, it is possible to obtain a visible light spectrum with even more iris brilliance. .

In accordance with the present invention as detailed above, Table 111nrc characters.

It is made by injection molding using a mold in which a pattern such as a design is formed and fine lattice lines are formed in one layer of either the turn part or the pattern part and other parts. In the injection molding process, when injection molding the character 9 pattern, etc. (including the lattice @ part of the mold) (turns are transferred to the injection molded product), from the trap to the container (11 of the container, etc.) Patterns such as 1 character and 9 designs can be formed at the same time,
The power ≧ Moko1raa is optically colored by VC, and is floating on the surface as a bright spectrum such as the iris structure of JA (of the well-known (B) folded lattice). , It's scary (it has the effect of forming an excellent trap decoration, or rtk,

[Brief explanation of drawings]

An embodiment of the present invention is shown in the figure, a water-type model r, figure 1 a plan view of σ compact container (lid), figure 2 1a sheep 1 figure ■-II
Line vc (B cutting [11] 1%l, Fig. 3 1al,
The pattern formation method for the tblrr mold is shown in the diagram, #! 4. FIG. 1a is a schematic cross-sectional view of a receiving rc mold for explaining the manufacturing method of the present invention. 1°...Special salary, 1a...Overse, 2.2'...Pattern. 3.3'...Grid line, 4...Upper mold, 4a...Front surface, appearance Kamaya Chemical Industry Co., Ltd. Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] Using a mold in which a character 9 pattern fathom turn is formed on the surface and a slight arI lattice line is released in any of the other 1/10 minutes excluding this pattern part lttfX pattern part. A method for manufacturing a Gosei Minami R ¥18 article, which is characterized by injection molding and transferring a pattern such as a pattern such as a pattern of 9 patterns including a part of the grid of the mold to the injection molded product using this injection molding RC machine,