JPH023471A - Coating, lantern frame material coated therewith, and device for preparation of the same material - Google Patents

Abstract

PURPOSE:To obtain a coating improved in adhesiveness to metal and paper and useful for covering a metal wire to form the core wire of a lantern frame material by mixing an acrylic copolymer emulsion resin, a cellulose derivative, and a rust-preventive pigment together. CONSTITUTION:An acrylic monomer is copolymerized with a vinyl monomer to give an acrylic copolymer emulsion resin (A). 10-40wt.% component A is mixed with 1-20wt.% cellulose derivative (B), 1-10wt.% rust-preventive pigment (C) (e.g., a condensed phosphate) and, if necessary, an antiseptic and mildewproofing agent, a color pigment, an antifoaming agent, etc., (D), thus giving an objective paint. A metal wire to form the core wire of a lantern frame material is coated with this paint to give a film around it.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a paint used for coating metal wires forming the core wire of a lantern aggregate, and a lantern aggregate coated with the same paint. and an apparatus for producing the same aggregate.

(Prior Art) Traditionally, bamboo strips have been used as the aggregate for lanterns, but recently, metal wires such as steel wires and aluminum wires are often used, except for some high-end products. However, even if starch glue was applied directly to these metal wires, the lantern paper would not stick well, so it was considered that paper tape made of washi paper or the like was wrapped around the periphery to improve adhesion. .

(Problems to be Solved by the Invention) However, even with aggregates wrapped with paper tape as described above, there are the following problems.

That is, the starch paste used for pasting may cause rust, and there is also the problem of rust occurring during aggregate storage, so it is necessary to apply plating or vinyl coating to the metal wire before wrapping it with paper tape. Ta.

Therefore, the number of manufacturing steps is increased, which increases the cost. Moreover, the paper tape sometimes easily breaks due to the presence of pinholes, resulting in frequent problems such as poor wrapping.

This invention was devised in view of the above-mentioned problems of the prior art. In other words, by applying it to the outer peripheral surface of the metal wire, the coating eliminates the need for wrapping paper tape and has less problems with rusting, and can easily adhere to paper such as lantern paper using starch-based glue. The purpose is to provide a paint with excellent adhesion to metals and paper. Another object of the present invention is to provide a lantern aggregate made of metal wires coated with the paint, and an apparatus for producing the aggregate.

(Means for solving the problem) A paint to be applied to a metal wire or the like that forms the core wire of a lantern aggregate must have at least the following elements. f: 1I11 naturally has sufficient adhesion to metals. Second, it is water-based and has adhesion properties with starch-based glue, and can easily adhere to paper such as lantern paper through the same glue. In other words, starch glue has traditionally been used for pasting paper lanterns, and lantern makers also prefer to use starch glue, which speeds up their work. Furthermore, non-aqueous adhesives that do not use water as a solvent may easily damage expensive brushes used by craftsmen. Thirdly, since it is applied directly to metal wires, it must be highly rust-proof.

Therefore, the present inventors have invented and completed a very unique paint that has the contradictory functions of adhesion to both metal and paper, and is also highly rust-proof.

That is, the paint according to the present invention is characterized in that it mainly consists of an acrylic copolymer emulsion resin copolymerized with a vinyl monomer, a cellulose derivative, and an antirust pigment, and a cellulose derivative is used as a protective polymer for the emulsion resin. That is.

First of all, since the paint used for lanterns and the like is exposed, it must have excellent weather resistance, and as mentioned above, it must also have metal adhesion properties. acrylic is selected. However, in consideration of adhesion with starch paste, it must be hydrophilic. Therefore, we polymerized an acrylic copolymerized dispersion with a hydrophilic monomer and used it as a resin for the paint, and selected a cellulose derivative with high adhesion to starch paste as the protective polymer for this emulsion resin. .

This paint also contains a cellulose derivative as a component. This derivative is effective not only for adjusting viscosity but also for increasing adhesion to starch paste. The paint according to claim 1, which is characterized by an anti-corrosion pigment in order to obtain anti-rust properties, has these acrylic copolymer emulsion resin, cellulose i-conductor and anti-rust pigment as main components. However, in addition to these compounds, various additives such as preservatives, antifungal agents, coloring pigments, antifoaming agents, and others may be added to the extent that they do not impede the functions of the paint. To briefly describe an example of the method for producing this paint, first, a cellulose derivative is dispersed using a dispersant. The acrylic copolymer emulsion resin is mixed and dispersed in the solution, and the cellulose A fibers are sufficiently wetted and homogenized. Rust-preventing pigments and various additives are also added for further dispersion. Adjust to the optimum viscosity by adding water.

The lantern aggregate according to claim 2 is a wire rod obtained by applying the paint according to claim 1 to a metal wire and covering it with the coating film.

Furthermore, the apparatus according to claim 3 is a dedicated apparatus for producing the lantern aggregate according to claim 2. That is, the manufacturing apparatus includes at least (a) a winding wire feeder that feeds out the metal wire, and (b)
) a paint tank filled with paint to be applied to the outer peripheral surface of the fed-out metal wire; (e) a drying oven that heats the metal wire that has passed through the paint tank to dry and harden the applied paint; (d) this A winding board is provided for winding up the coated metal wire that has passed through a drying oven and has been coated with a coating film. Then, the metal wire fed out from the winding feeder is pulled upward so that it passes through the paint tank almost vertically, and paint is applied to the outer peripheral surface of the metal wire.

(Example) An example will be described with reference to the drawings. FIG. 1 shows an example of a lantern aggregate manufacturing apparatus that continuously applies paint to the outer peripheral surface of a metal wire 1 while winding it up, and then dries it. The device is composed of a plurality of unwinding boards 2 for unwinding the metal wire 1, a paint WI3 for filling the paint, a drying oven 4, and a plurality of winding discs 5, and is capable of taking out a large number of winding cheeses of coated metal wire. It looks like this.

The metal #i11 is made of a wire rod such as a plated or unplated steel wire, aluminum wire, stainless steel wire, or copper wire, and is wound in a cheese shape around the feeding board 2 on the supply side. Then, the pulled out end passes through a paint tank 3, a drying oven 4, etc., and is then wound onto a winding board 5. Therefore, each winding is performed by driving the main shaft 6! When 115 winds up and rotates,
In conjunction with this rotation, the feeding fi2 also rotates, and the metal #
I2 begins to roll out. However, in order to prevent the unwinding board 2 from idling, it is preferable that the unwinding board 2 be provided with a braking part or the like for rewinding the film in the opposite direction.

The metal wire 1 fed out from the feeding machine 2 is transferred to the feed roller 7
It is pulled up to the paint tank 3 via the paint tank 3.

The feed roller rough is provided with notches, and the metal wire 1
At the same time as the paint is sent out, appropriate scratches are made on its outer surface, creating a surface condition that makes it difficult for the paint to peel off.

The scratched metal wire 1 is then pulled upward so that it passes through the paint tank 3 and passes through the tank almost vertically. As shown in the figure, the paint tank 3 includes a storage portion 8 for storing paint and a storage portion 8 located at a higher position than the metal wire 1.
It consists of a paint pan 9 through which the paint passes. A stirring roller 10 is attached to the reservoir 8, and the rotation of the roller 10 lifts and supplies the paint to the paint pan 9. When the rotation of the roller 10 stops, the lifted paint returns to the storage section 8, preventing leakage.

Further, the paint pan 9 is provided with a removably replaceable application nozzle 11 that allows the metal wire 1 to pass through and prevents paint from leaking. The nozzle 11 is made of a hard material.
It has a through hole with a large diameter. Preferably, the paint is held at a depth of 10 tom higher than the nozzle 11 in the paint pan 9, but if the paint has a suitable viscosity, it will not leak from the through hole during operation of the device. There isn't. When the diameter of the metal wire 1 to which paint is applied changes, the nozzle 11 is removed and the size is exchanged.

Note that, for example, the paint pan 9 is arranged so that the metal wire 1 can pass approximately through the center of the nozzle 11 without contacting the through hole.
It is preferable to provide an id member on the lower surface of the metal wire 1 for guiding the passage of the metal wire 1. Further, the paint tank 3 may have a structure in which a level sensor for detecting the amount of paint held is attached and the same paint is automatically supplied, so that a certain amount of paint can always be held.

Next, the paint filled in the paint tank 3 is a special paint that easily adheres to the metal wire 1 and also adheres to the lantern paper via the starch glue. In other words, it is a paint that has contradictory functions such as adhesion to both metal and paper.

Moreover, since it is applied directly to the metal wire 1, it must have high rust prevention properties.In addition, in this embodiment, since the coated metal wire is wound into a cheese shape, In order to prevent the coated metal wires from adhering to each other, an additional function of a coating having anti-blocking properties is also required. Therefore, the paint of this example has (a) metal adhesion;
(b) starch-based glue adhesion, (e) rust prevention, (d) blocking resistance, and since it is applied to metal wires used as a substitute for bamboo strips, (e) flexibility. It is necessary to have both.

Therefore, for example, one or two types of acrylic monomers such as C1-04 acrylic 7mides, acrylic esters, and methacrylic esters can be copolymerized with one or two types of vinyl monomers such as In, vinyl acetate, and polyvinyl alcohol. An acrylic copolymer dispersion was polymerized with the following methods to obtain a resin for this paint.

Moreover, as a protective polymer for this emulsion resin,
A cellulose derivative such as hydroxylethylcellulose was chosen. Then, this acrylic copolymer emulsion resin was mixed and dispersed in a solution of cellulose derivatives such as hydroxyl ethyl cellulose, methyl cellulose, and pulp to form a paint.

That is, since the emulsion resin is acrylic, it has metal adhesion properties, and since it is a copolymer with a vinyl monomer, it is hydrophilic and adheres well to starch glue. Thus, the composite of cellulose fiber and emulsion resin functions effectively through the starch-based glue for adhesion to the lantern paper, and the emulsion resin exhibits an effect for adhesion to the metal wire 1. That will happen. However, regarding blocking resistance, the emulsion resin, for example, acrylic styrene emulsion resin, has a low adhesiveness when cured, that is, MFT (
This is achieved by supplementarily blending one or more resins with a high film forming temperature) or Tg (lf terrace transition point). Further, in order to further improve the adhesion with the starch-based glue, starch may be added as a protective polymer to the emulsion resin, and starch may also be added to the cellulose derivative as a component.
For example, a phosphoric acid-based antirust pigment such as condensed phosphate is also added to enhance the antirust function of the paint.

The blending ratio of the paint in this example is as follows. That is, it consists of 10 to 40% by weight of emulsion resin, 1% to 20% by weight of cellulose derivative, and 1 to 10% by weight of anticorrosion pigment, and compared to ordinary paints, the composition ratio of cellulose derivative is particularly high. It is. This is based on the need to increase the viscosity of the paint as well as improve its adhesion to the lantern paper. In other words, the manufacturing equipment shown in this embodiment has a structure in which the paint is applied when the metal wire 1 is pulled up and passed through the paint tank, so the paint must be given a relatively high viscosity. This is because it is not possible.

For example, 5 to 15% by weight of a white pigment such as anatase-type titanium oxide and 3 to 15% by weight of various additives such as antiseptics, antifungal agents, and antifoaming agents are blended.

The reason why white pigment is added is that white colored aggregates tend to be preferred as aggregates for lanterns.

A paint having such a composition is filled in the paint tank 3, and when the metal R1 is pulled up directly above and passes through the paint pan 9 through the nozzle 11, it is continuously applied to the outer peripheral surface of the metal R1. be done. That is, if the metal wire 1 is made to advance and pass almost vertically, the dripping of the applied paint will spread evenly over the outer peripheral surface of the metal wire, and a coating film with a uniform thickness without any unevenness will be formed. It becomes possible.

Then, the metal #i1 that has passed through the paint tank 3 is drawn into the drying oven 4 as it is. The drying oven 4 is surrounded by a heat insulating material, and a plurality of electric heating means 12 such as heaters are provided inside the oven. The temperature inside the furnace is
Preferably, a predetermined temperature can be maintained using a temperature sensor or the like, and it is also preferable that the heating means 12 can be switched and controlled as necessary. A reversing roller 13 is provided at the top of the furnace, and the dried coated metal wire is pulled out downward via the roller 13, passes through an intermediate roller 14, and is wound by a winding plate 5. taken.

However, in order to obtain a good finish of the coating, it is preferable to apply the coating twice. Therefore, after the undercoating, the coating may be rolled up once, or it may be passed through the same or different paint tank or drying oven again without being rolled up, to complete the topcoating and then rolled up.

Further, the main pongee 6 may be provided with a winding torque adjusting means so as to be compatible with metal wires 1 having various diameters or to finely adjust the finish of the coating film.

Now, the coated metal wire wound up in this manner has the metal wire 1 as the core wire, and a coating film having excellent adhesion with starch-based glue is formed on the outer peripheral surface of the coated metal wire. Therefore, this coated metal wire is
When used as a lantern aggregate, lantern paper P can be directly attached via starch glue S, as shown in FIG.

However, the paint according to the present invention and the metal wire coated with the paint are not limited to use only as lantern aggregate. This paint can be used in various applications to bond metal and paper through a starch-based glue such as starch or a mixture of starch and vinyl acetate. Other uses of this paint include, for example, as a brimer for attaching vinyl cloth, woven cloth, paper cloth, etc. to metal structures such as ceilings and walls, as well as fittings such as doors. Moreover, the metal wire coated with this paint can be used as various core materials that can be fixed to paper via a starch-based glue.

(Effects of the Invention) (1) Since the paint according to the present invention contains an acrylic copolymer emulsion resin copolymerized with a vinyl monomer, it has excellent adhesion to metals and starch glue. ing. Furthermore, since a cellulose derivative is selected as the protective polymer of the emulsion resin, and a cellulose derivative is also included as a component, adhesion with starch-based glue is significantly improved. Therefore, this paint adheres not only to metals but also to paper through the starch-based glue, and is unique in that it has contradictory functions, and is expected to be used in a wide variety of applications. In addition, since it contains anti-corrosion pigments, there is no problem of rust even when applied directly to metal.

(2) Since the lantern aggregate according to the present invention is made by applying the above-mentioned paint to the metal wire, lantern paper can be attached by simply applying starch-based glue directly to the surface of the lantern aggregate. Therefore, it is no longer necessary to wrap paper around the outer surface of the aggregate.
Moreover, since the paint has excellent rust prevention properties, there is no need to perform any special rust prevention treatment, making it possible to provide extremely inexpensive lantern aggregate.

In addition, since the starch paste that lantern makers are familiar with can be used as an adhesive, there is no impact on the lantern production process, and there is less damage to the brushes. Furthermore, since the lantern paper can be pasted with water-based starch glue instead of non-aqueous synthetic resin glue, it is also ensured that the lantern paper can be removed without damaging it. Therefore, even if the lantern paper pattern is lost, the paper pattern can be recycled.

(3) The lantern aggregate manufacturing device according to the present invention has a structure in which paint is continuously applied while winding the metal wire, and then dried, making it possible to produce lantern aggregate extremely efficiently. Ru. In addition, the metal wire to be coated is pulled upward so that it passes through the paint tank almost vertically, and the paint is applied to it.

Therefore, the sagging of the applied paint spreads evenly down the outer circumferential surface of the metal wire, making it possible to form a coating film with a uniform thickness without any unevenness.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a lantern aggregate manufacturing device;
FIG. 2 is a cross-sectional view showing a state in which lantern paper is attached to lantern aggregate produced by the above-mentioned apparatus. 1... Metal wire 2... Winding wire feeding machine 3...
Paint tank 4...Drying oven 5...Take-up tube Patent applicant: Heisan Co., Ltd.

Claims (1)

[Claims] 1) An acrylic copolymer emulsion resin copolymerized with a vinyl monomer, consisting mainly of a cellulose derivative and an antirust pigment, characterized in that the cellulose derivative is used as a protective polymer for the emulsion resin. paint. 2) A lantern aggregate in which a coating film of the paint according to claim 1 is formed on the outer peripheral surface of a metal wire. 3) A winding feeder that feeds out the metal wire, a paint tank that fills the paint to be applied to the outer peripheral surface of the metal wire that has been fed out, and the metal wire that has passed through the paint tank is heated to dry the applied paint; It is equipped with a drying oven for curing, and a winding disk for winding up the coated metal wire that has passed through the drying oven and formed a coating film, and the metal wire fed out from the feeding disk is rolled almost vertically inside the paint tank. A device for producing lantern aggregate that is pulled upwards as it passes through and then coats its outer circumferential surface with paint.