JP2818120B2 - Painting / Photo Frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative frame (painting / photo frame), a method of manufacturing a decorative frame member, and a member formed thereby.

[0002]

2. Description of the Related Art Due to the nature of works of art such as paintings and photographs, the choice of the frame on which the painting or photograph is mounted has a great influence on the presentation, and also on the visual effects of the work of art. Have power. Accordingly, a large industry is growing to meet the demand for custom painting / photo frames, from simple square cross-section pine wood frames to elaborately carved and gold leafed hard wood frames. However, inevitably, these frames are expensive both in terms of raw material costs and in terms of the cost of making techniques to achieve the desired results.

[0003]

In order to meet the demand for inexpensive frame members, mainly for mass sale and mostly for photographic frames, manufacturing methods by plastic extrusion have been adopted. I have. Although this extrusion-molded product is currently widely used, there has been a drawback in that it has not been so elaborately decorated and is relatively simple. Injection molding makes it possible to produce integrally decorated frame members or entire frames at the time of molding, but the cost of these methods is prohibitive even for large manufacturers.

[0004] Accordingly, there is a need to provide a painting / photographic frame member manufacturing process that allows for the decoration of such extruded articles while retaining the advantages of high volume plastic extrusion.

[0005]

According to a first aspect of the present invention, a step of extruding a plastic and cutting it to a predetermined length, a step of applying a solution type wood paste to the extruded plastic piece, A step of molding or molding the applied wood paste so as to form a decoration on the surface of the plastic extruded piece when or after the application, and drying the paste. A manufacturing method is provided.

[0006] Solvent-based wood pastes (solution-type wood pastes) preferably include toluene and acetone.

[0007] As a specific example of the wood paste, the product name is wood pulp, and the classification is IMDG CODE 3.3 UN N12
There are 63 and MMMCODE 3 C21 products by Capellini du SDF of Seregno, Italy.

[0008]

A wood paste having this property is known for decorating wood, but until now, its use for decorating plastic has not been considered.
Unexpectedly, wood pastes of this nature effectively adhere to plastic extrudates such as polystyrene, for example, and provide a beautiful decorative finish.

It is believed that this solvent erodes the plastic material and that the paste resin bonds with the polymer of the plastic material. Apart from the mechanism by which this effect is achieved, the final finish is very attractive and innovative in the painting / photo frame industry.

[0010] As an improvement over the above general technique,
After applying the wood paste to the plastic molded article, it is preferable to apply a straightening force when drying the wood paste, based on the result of the fact that the extruded article tends to bend when the paste cures .

The extruded piece coated with the wood paste is
With the paste-coated surface facing upwards, and with the end of the extruded piece initially bending downward on the support arm by its weight,
It is convenient to place it on a support arm that provides a supporting force against the opposite end of the extruded piece. By doing so, the lowering and curving of the paste are suppressed by the curing of the paste, that is, the extruded product is substantially straightened when the paste is cured.

[0012] For this purpose, a drying stand having a pair of stands is preferably provided, the pair of stands being constrained to move together or separated along an axis.
In addition, each stand has a support arm that extends sideways,
The opposite ends of the one or more extrudates are supported on the support arms of each stand, and both ends of the extruded pieces are curved downward. The support arm can also be brought closer by moving both stands as the paste hardens. Thereby, the curvature caused by the curing of the paste, by increasing the bending effect by weight in the opposite direction,
It is possible to continually correct.

According to still another aspect of the present invention, there is provided a frame member manufactured by the method according to the first aspect. Further, according to still another aspect, a frame formed by a plurality of the frame members can be provided.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 shows a polystyrene extruded product of a predetermined length having a cut surface suitable for a picture / photo frame member cut to an appropriate length so as to be easily handled, stored, and transported. The frame member 1 is also shown.

The extruded piece is formed by first being extruded through the exit of the mold, so that it has a uniform cross section along its length.

A series of teardrop-shaped decorative moldings 2 formed on the upper surface of the extrudate are applied to the extrudate after undergoing an extrusion process.

The decorative molding 2 is made from one type of solvent-based wood pulp or paste (solution type wood pulp or paste) commonly known in the wood craft industry.

Suitable wood pastes or pulp for this purpose are products manufactured by the company Capellini du S.D.F.
IMDGCODE 3.3 Page 3372 UN N1263 and MMMCODE 3
C21). An exemplary wood paste consists of the solvents acetone and toluene, which interact with the polystyrene extrudate to erode and tightly bind the plastic material. Due to the nature of this special paste solvent, care must be taken during use and, ideally, masks and goggles must be worn to protect against toxic gases during handling.

The paste may be applied in a mold mounted on top of the plastic extruded piece, but is preferably poured out of a programmed and automated extractor to extract the paste in a pattern. It is good to apply by.

Preferably, an extruder fan is mounted on the paste application device within a hood extending to the top of the device and, as soon as the paste has been applied, suitably for the next three to four minutes. And exhaust the solvent gas. This has been found to drastically reduce the subsequent drying time.

Once the predetermined paste has been applied, it must be dried for several days, during which time the upper surface of the extruded piece to which the paste has been applied will be strained, and both ends will bend upward. Will be. This effect can be countered by first applying a reverse tension to the extruded product.

As shown in FIG. 2, the drying table is a caster 5
Are provided substantially parallel on each other, are restrained to operate together, and are separated by telescopic linkages 4a, 4b.
And a substantially symmetrical stand member 3a, 3b. Each stand member has arms 6a, 6b extending laterally from its upper end and supporting extruded pieces suspended thereon.

First, the two stand members 3a and 3b are separated, and as the paste dries as the solvent evaporates,
The extruded piece begins to curve upward at both ends. To cope with this, the stand members 3a, 3b may be approached at that time so that their weights cause both ends to descend so as to rest on the arms 6a, 6b. The separation distance is reduced appropriately and stepwise during the drying process.

In order to further reduce the drying time, a ventilation fan is appropriately provided in the drying chamber. Although the use of these fans has proven to be the only most effective way to reduce the drying time during application, these fans are of great use in the drying process.

[0026]

According to the present invention, it is possible to provide a process for producing a frame member for painting / photography which enables decoration of such an extruded product while maintaining the advantages of large-scale plastic extrusion.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a frame member.

FIG. 2 is a perspective view of a drying table used in the manufacturing method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Frame member, 2 ... Decorative molding, 3a, 3
b: stand member, 4a, 4b: telescopic link mechanism,
5 ... casters, 6a, 6b ... arms.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A47G 1/06 A47G 1/14 B44C 3/12

Claims (9)

(57) [Claims] 1. Extruding a plastic and cutting it to a predetermined length, applying a solution type wood paste to a plastic extruded piece, and applying the applied wood paste to a surface of the plastic extruded piece. A method for producing a frame member, comprising: a step of molding or molding when or after being applied so as to form a paste, and a step of drying the paste. 2. A method according to claim 1, wherein the solvent of the solution-type wood paste comprises toluene and acetone. 3. The method of claim 1 or 2, wherein in the step of drying the wood paste, one or more ventilation fans are used to evacuate the solvent vapor. 4. The method according to claim 3, wherein said ventilation fan is operated above the extruded product when the wood paste is applied. 5. A method as claimed in claim 1, wherein the step of drying the wood paste applies a straightening force to the extruded piece against the curvature. 6. The step of drying the wood paste, wherein the extruded pieces are oriented such that the surface on which the paste is applied faces upward, and the end of the extruded article is initially Place it on a support arm that provides support for the opposite end of the extruded piece, in a state that curves downward on the support arm, and cure of the paste suppresses curvature due to gravity and cures the paste Claim 5 wherein the extruded piece is substantially straight
The described method. 7. A drying table having a pair of stands constrained to move together or spaced apart along an axis, each stand having a laterally extending support arm, wherein in the step of drying the wood paste, 7. The method of claim 6, wherein the support arms of each stand support opposite ends of the one or more extruded pieces, and the stand is interlocked as the wood paste dries. 8. A frame member manufactured by the method according to any of the preceding claims. 9. A frame formed by a plurality of frame members according to claim 8.