KR20160057934A

KR20160057934A - Manufacturing method of molding apparatus by reusing coffee grounds

Info

Publication number: KR20160057934A
Application number: KR1020140159181A
Authority: KR
Inventors: 김채운; 김중엽; 최웅재
Original assignee: 김채운; 김중엽; 최웅재
Priority date: 2014-11-14
Filing date: 2014-11-14
Publication date: 2016-05-24

Abstract

The present invention relates to an article molding method using coffee grounds, wherein the method comprises the following steps: modifying the water content of the coffee grounds; placing the coffee grounds having the modified water content into a mixer, and adding a liquid binder thereto to mix the same with the coffee grounds, and thereby produce coffee ground dough; injecting the coffee ground dough into a mold; applying pressure to the coffee ground dough inside the mold using a heating plate to mold an article; and releasing the pressure molded article from the mold and drying the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for manufacturing a molded article having recycled coffee grounds,

The present invention relates to a method of manufacturing a molded article by recycling coffee grounds, and more particularly, to a method of manufacturing a solidified molded article that can be utilized for interior decoration by utilizing the direction, deodorization and dehumidification effects of coffee grounds.

The demand for coffee in our country has increased rapidly year by year, and it is still steadily rising. As a result, the amount of coffee residue left in coffee beans is also increasing.

However, the use of residue left after extracting coffee beans is limited to the extent that it is used to remove the smell of cigarettes by putting the leftover mugwort in a container such as a cup or a plate and enjoying the direction and deodorizing effect or placing it in an ashtray .

Therefore, most of the coffee grounds are discharged in the form of household waste, which is not only wasteful of resources but also environmentally undesirable.

In addition, several studies have been conducted to make use of the coffee grounds, but these studies are mostly concerned with the use of coffee grounds as fuel or fertilizer components.

However, since the coffee grounds have a dehumidifying effect other than the direction and deodorizing effect, and are excellent in light weight and have a unique and luxurious color, it is expected to be utilized as a good interior material when solidified. Therefore, It is necessary to search.

KR 10-2010-0112802 A KR 10-2013-0107476 A KR 10-2013-0020639 A KR 10-1103424 B

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-mentioned problems in the recycling method of coffee scavenging, and it is an object of the present invention to sufficiently utilize the characteristic of coffee grounds having a unique high- And to provide a method for producing a recycled molded article.

According to another aspect of the present invention, there is provided a method of manufacturing a molded article by recycling a coffee bean,

Adjusting the moisture content of the coffee grounds;

Adding the coagulated coffee residue to the mixer and injecting a binder in the liquid phase to uniformly mix the coffee grounds and the binder to prepare a coffee ground paste;

Introducing the mixed coffee ground dough into a mold;

Pressing the coffee ground batter put into the forming mold with a hot plate to form the coffee ground batter;

And removing the compression molded article from the mold and drying the molded article.

According to the present invention, there is provided an effective method for manufacturing a molded article by recycling coffee grounds extracted from coffee.

According to the method of the present invention, a molded product having various usability can be produced at a low cost through a simple process using coffee grounds.

Particularly, the coffee residue used in the present invention is a very inexpensive material as a by-product of coffee extraction,

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart sequentially showing a method of manufacturing a molded article recycled from a coffee ground according to the present invention; FIG.
Fig. 2 is a photograph showing the appearance of a molded article recycled from the coffee grounds produced in Example 1. Fig.

FIG. 1 is a flowchart sequentially illustrating a method of manufacturing a molded product obtained by recycling a coffee ground according to the present invention. Hereinafter, referring to FIG. 1, a method of manufacturing a molded product in which a coffee bean is recycled according to the present invention will be described in more detail do.

The method of manufacturing a molded product in which the coffee grounds according to the present invention are recycled comprises the steps of adjusting a moisture content (S1), a dough (S2), a mold filling step (S3), a press molding step (S4) , And a desorption / drying step (S5).

First, in the step of regulating the moisture content (S1), coffee is extracted from a coffee shop, and the remaining coffee grounds are collected. In the collected state, the coffee residue having a constant moisture content is dried and dried to adjust the moisture content to 20% or less. If the molding is carried out at a high moisture content, it is difficult to dry it later. If the drying is not sufficient, molds may be generated.

In the next step dough making step S2, the coffee residue having the adjusted moisture content is put into a mixer, and a liquid binder is put in to mix the coffee grounds and the binder uniformly to prepare a coffee ground batter.

The liquid binder may be used in various forms depending on the use of the molded article. However, it is preferable to use a binder selected from the group consisting of cotton, wood paste, epoxy resin, starch paste and urethane resin. Is particularly preferable.

However, since the coffee grounds are organic materials, a urethane resin binder having a small degree of microbial propagation and an excellent strength is most preferable.

On the other hand, the coffee grounds exhibit excellent properties in terms of light weight, directionality and deodorization property but do not exhibit sufficient mechanical properties when they are formed into a molded product, and thus there is a limit in application to fields requiring high strength and elasticity.

Therefore, it is preferable to mix other materials together with the coffee grounds to complement each other.

Cork and textiles are suitable for mixing with coffee grounds.

Cork is the part between the crust and the crust of the cork nau, lightweight, low thermal conductivity and excellent elasticity.

The coffee grounds are lightweight and porous and excellent in hygroscopicity and deodorization but they are weak because they have low elasticity. The cork which has similar characteristics and has good elasticity is mixed with 10 ~ 100% of the amount of coffee residue, Can be obtained.

Particularly, since cork has excellent antimicrobial activity, it is possible to inhibit the growth of microorganisms such as fungi in coffee grounds, and in the case of producing a molded product by mixing these, it is possible to manufacture hygienic interior goods.

It is also possible to add 5 to 100% of fibers to the amount of coffee grounds with or without the cork. It is preferable to add synthetic fibers such as polyester in the form of short fibers or to add recycled fibers by pulverizing them in terms of resource recycling.

It has an advantage of remarkably improving the mechanical properties such as tensile strength by the addition of a small amount, but it is advantageous in that characteristics of recycled coffee residue such as light weight, sound absorbing property, deodorizing property, directionality and hygroscopicity can be maintained.

In addition, the addition of fibrous materials dyed in various colors is preferable because it can impart various decorative changes to the monolithic coffee grounds.

In the next forming mold feeding step (S3), the mixed coffee ground dough is uniformly injected into the mold.

Then, in the press forming step S4, the coffee ground dough put into the forming die is pressed with a hot plate to be formed into the shape of a molded product. The temperature and pressure shall be such that the liquid binder is sufficiently cured and the coffee grounds are agglomerated and agglomerated to a sufficient temperature and pressure to form a solid shaped article. The preferred temperature and pressure are adjusted to suit the type and mixing ratio of the liquid binder and the use of the molded article.

The formed molded article is desorbed from the mold and then dried to complete the product (S5).

Hereinafter, the present invention will be described by way of examples.

Example 1

The coffee ground powder adjusted to a moisture content of 15 to 20% was put into a mixer, and a commercially available ground koji (trade name: Pinocchio koji) used in the clay craft was made into water to make a binder in the form of a liquid binder. A coffee ground batter capable of being formed was prepared by uniformly mixing the coffee grounds and the rice husk.

Then, the mixed coffee ground dough was placed in a rectangular parallelepiped mold, and heated and pressed with a hot plate heated at 95 캜 to form a brick-shaped molded article.

The extruded molded article was removed from the mold and further dried using hot air to complete a brick mold product in which the coffee residue as shown in Fig. 2 was recycled.

The brick mold recycled from the finished squeegee was very light and showed a sponge-like porosity. Especially, it was very satisfactory in terms of light weight and was expected to be used as an indoor decorative brick.

Example 2

The same procedure as in Example 1 was followed to prepare an indoor decorative brick-shaped molded product. The mixture of the coffee ground powder and cork powder having a controlled moisture content was mixed at a ratio of 5: 1 in volume ratio, and then a liquid binder was added to prepare a molded product Respectively.

Example 3

The same procedure as in Example 1 was followed to prepare an indoor decorative brick-shaped molded product. After the mixture of the coffee ground powder and the polyester fiber having a controlled moisture content was mixed at a ratio of 10: 1 in volume ratio and then a liquid binder was added thereto, .

Example 4

A molded product was produced using a coffee residue having a moisture content adjusted in the same manner as in Example 1, except that a urethane resin was used as a liquid binder.

The urethane resin binder used is a urethane waterproof coat which is mainly used as a waterproofing material and a flooring material, and is mainly composed of polyurethane.

The molded article produced in this Example exhibited a more rigid property and a superior water resistance as compared with the molded article of Example 1 using the green oak.

Claims

Adjusting the moisture content of the coffee grounds;
Adding the coagulated coffee residue to the mixer and injecting a binder in the liquid phase to uniformly mix the coffee grounds and the binder to prepare a coffee ground paste;
Introducing the mixed coffee ground dough into a mold;
Pressing the coffee ground batter put into the forming mold with a hot plate to form the coffee ground batter;
And removing the compression-molded product from the mold and drying the molded product.

The method of manufacturing a molded product according to claim 1, wherein the binder in the liquid phase is selected from the group consisting of green oak, wood paste, epoxy resin, starch paste and urethane resin.