JP4264521B2 - Manufacturing method for ceramic glass bottles - Google Patents

Description

This invention relates to a method of manufacturing a porcelain tone vial.

  Pottery is widely used as a container for storing food, alcoholic beverages, drinking water, seasonings and the like. Glass bottles are also widely used as storage containers for food. Glass bottles are easier to mold than pottery and have high accuracy in molding dimensions, and have been used for a long time instead of pottery.

  Glass bottles have the above-mentioned advantages and are excellent as containers for food and the like, but cannot produce a texture like pottery. As a technique for processing the surface of a glass bottle, coating a resin mixed with a colorant or forming a frosted film with a resin mixed with spherical siliceous beads or resin beads is performed.

  However, the technology for processing ceramics on the surface of glass bottles is not known to the applicant, and other processing technologies include satin (insulator) by electrostatic coating of a resin composition containing a spherical fixing resin. It is known to apply a woven pattern to the surface of a glass bottle (see Patent Document 1).

  In recent years, pottery has been reconsidered as a container for sake and shochu because it gives a high-class feel and makes it feel friendly and warm.

However, pottery has drawbacks that it is expensive to manufacture and is unsuitable for mass production. Furthermore, it is difficult for the earthenware to have uniform finished dimensions, and the mouth portion cannot be sealed with a single type of cap.
Japanese Patent No. 3029021

This invention, which was proposed in view of such circumstances, can be mass-produced with reduced manufacturing costs, the production of pottery tone vial can give more luxurious improve the accuracy of the finished dimension It aims to provide a method.

That is, the invention of claim 1 relates to a thermosetting resin combining acrylic and urethane, or a thermosetting resin combining acrylic and melamine, natural stone, ceramic crushed, ceramic pigment Different colored particles having a size of 0.1 to 1 mm composed of powder of the above and uneven particles having a size of 0.1 to 1 mm composed of glass beads, silica beads, ceramic beads, and resin beads, respectively. Disperse to 0.1 to 10 parts by weight, and apply a colored opaque material containing a colorant to the surface of the rotating glass bottle by spray coating and heat cure to a thickness of 15 to 20 μm. And a method for producing a ceramic glass bottle, wherein a coating film having a pencil hardness of 3H or more is formed .

According to the method for producing a ceramic glass bottle according to the invention of claim 1 , natural stone, in contrast to a thermosetting resin combining acrylic and urethane or a thermosetting resin combining acrylic and melamine, 0.1 to 1 mm composed of crushed ceramic, 0.1 to 1 mm different colored particles composed of ceramic pigment powder, glass beads, silica beads, ceramic beads and resin beads Disperse the uneven particles having a size of 0.1 to 10 parts by weight, and apply a colored opaque material containing a colorant to the surface of the rotating glass bottle by spray coating. than to the pencil hardness in a thickness of 15~20μm thermally cured to form a more coating 3H, colored opaque coating efficiently Nurigi is not form fine irregularities on the surface of a glass bottle And pottery tone by coating can be formed, without shades of porcelain tone is impaired long period while preventing the scratch the surface of the pottery tone glass bottles, yet the bottle by suppressing the transmission of ultraviolet light Deterioration of contents can be prevented . In addition, it is possible to mass-produce ceramic glass bottles at a reduced manufacturing cost, improving the accuracy of the finished dimensions and giving a higher-class feeling.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is an external view of a ceramic glass bottle, FIG. 2 is a partially enlarged sectional view of the ceramic glass bottle, FIG. 3 is a schematic explanatory diagram of electrostatic coating with a spray gun, and FIG. 4 is an electrostatic diagram with a rotating disk type coating device. It is a schematic explanatory drawing of coating.

As shown in FIGS. 1 and 2, the ceramic glass bottle 10 is formed by forming a colored opaque coating film 20 made of a synthetic resin containing different color particles 21 and uneven particles 25 on the surface 11 of the glass bottle. is there.

  The applicant diligently studied to form a ceramic-like coating film that has the texture, warmth, color, and texture of the pottery. This ceramic-like coating film is completely different from a coating film that forms a satin-like pattern with a smooth and smooth touch.

  In the examples, the synthetic resin for forming the coating film 20 was a thermosetting resin such as acrylic, epoxy, urethane, or melamine, or a combination thereof. In particular, the synthetic resin is preferably a combination of acrylic and urethane thermosetting resins or a combination of acrylic and melamine thermosetting resins in order to ensure a predetermined pencil hardness. The coating film 20 preferably has a thickness of 15 to 20 μm, and an ultraviolet absorber is blended as necessary. When the thickness is less than 10 μm, the ultraviolet blocking effect cannot be exhibited. The coating film 20 prevents the contents of the bottle 10 from deteriorating by suppressing the transmission of ultraviolet rays.

  The different color particles 21 are appropriately selected according to the color of the coating film 20 formed on the surface of the glass bottle to create a ceramic atmosphere. In this embodiment, the different colored particles 21 are composed of natural stones such as marble and limestone, crushed ceramics such as ceramics and porcelain, and ceramic pigment powders.

  The uneven particles 25 form unevenness on the surface of the coating film 20 to enable a ceramic finish. In this embodiment, the uneven particles 25 are made of glass beads, silica beads, ceramic beads, resin beads, or the like.

  The colorant is preferably brown, black, white, or yellow in order to bring out a pottery tone. This colorant is blended in the synthetic resin together with the different color particles 21 and the uneven particles 25 to suppress the transmission of ultraviolet rays and prevent the contents of the bottle 10 from deteriorating. The black colorant is primed on the surface of the bottle forming a thin-colored coating film to prevent ultraviolet rays from being transmitted.

  This pottery glass bottle 10 can improve the accuracy of the finished dimensions as compared to pottery, and the mouth can be sealed with a single type of cap 11. Here, the cap 11 was a cork stopper.

The method for producing the ceramic glass bottle 10 is to apply a colored opaque paint made of a thermosetting synthetic resin in which different colored particles 21 and uneven particles 25 are dispersed on the surface of the glass bottle by spray coating, and then thermally cure to form a coating film. 20 is formed.

  Spray coating is a coating in which the paint is sprayed in the form of a mist with compressed air (air atomization coating), a coating in which the paint is atomized with compressed air or hydraulic pressure (airless (hydraulic pressure) atomization coating), and the paint is charged. Spray coating (electrostatic coating) and powder coating that sprays powder paint. In this embodiment, a colored opaque paint in which metal powder is dispersed is applied by a known electrostatic coating. Glass bottles are brought into the painting line after the outer surface is washed with water and cleaned. As shown in FIG. 3, the carried glass bottle 10 </ b> A advances while rotating, and the colored opaque paint charged by the spray gun 30 is sprayed on the outer surface. The spray gun 30 is disposed so as to spray paint on the outer surface of the bottle 10A from obliquely above and below. Here, the paint is sprayed by two spray guns 30. The spray gun may be applied in multiple stages. For example, it is possible to create a more ceramic-like atmosphere by applying different color paints. Reference numeral 35 in the drawing denotes a rotating shaft fitted into the glass bottle 10A.

  The colored opaque paint can be applied to the surface of the glass bottle 10 </ b> A by a so-called rotating disk type electrostatic coating apparatus 40. As shown in FIG. 4, the glass bottle 10 </ b> A is applied to the entire outer surface of the bottle 10 </ b> A by the colored opaque paint charged and atomized by the charged rotating disk D being scattered radially. Thereby, fine spray coating can be performed on the outer surface of the glass bottle 10A. Reference numeral 41 in the figure is a motor, and 42 is a paint supply device.

  The glass bottle on which a predetermined colored opaque paint is applied is heated for 20 minutes in a curing furnace maintained at 170 ° C. to 180 ° C., whereby the applied paint is thermally cured to form a coating film.

The pencil hardness of this coating film is not less than 3H. This prevents the surface of the ceramic glass bottle 10 from being scratched and prevents the color of the ceramic glass from being damaged for a long time.

Method for manufacturing ceramics regulating glass bottles are those 0.1~1mm the size of the different-color particles 21 and uneven particles 25. If the sizes of the different color particles 21 and the uneven particles 25 are out of this range, a ceramic-like coating film cannot be formed. When the concavo-convex particles are smaller than 0.1 mm, a touch like pottery cannot be obtained. When the uneven particles exceed 1 mm, the spray gun is clogged and a predetermined coating cannot be performed. In particular, the size of the different color particles 21 and the uneven particles 25 is preferably 0.2 to 0.5 mm. It is preferable that the different color particles 21 and the uneven particles 25 are added so as to be 0.1 to 10 parts by weight with respect to the synthetic resin.

  Tables 1 and 2 show various evaluations of the examples and measurement methods thereof. Various evaluations (Table 1) were performed according to the measurement methods and measurement conditions in the table. The average surface roughness Ra (Table 2) was measured at any two locations (12 locations in total) of each ceramic glass bottle.

It is an external view of the earthenware glass bottle of this invention. It is a partial expanded sectional view of the earthenware glass bottle. It is a schematic explanatory drawing of the electrostatic coating by a spray gun. It is a schematic explanatory drawing of the electrostatic coating by a rotating disk type coating device.

Explanation of symbols

10 Ceramic-like glass bottles 20 Coating films 21 Different colored particles 25 Concave and convex particles

Claims (1)

0.1 consisting of natural stone, crushed ceramic, and ceramic pigment powder for thermosetting resin combining acrylic and urethane or thermosetting resin combining acrylic and melamine 0.1 to 10 parts by weight of different colored particles having a size of ˜1 mm and uneven particles having a size of 0.1 to 1 mm composed of glass beads, silica beads, ceramic beads, and resin beads A colored opaque material blended with a coloring agent is applied to the surface of a rotating glass bottle by spray coating, heat-cured, and has a thickness of 15 to 20 μm and a pencil hardness of 3H or more. A method of manufacturing a ceramic glass bottle characterized by forming a glass.

Images