CN111070367A

CN111070367A - Coffee cork and preparation method and application thereof

Info

Publication number: CN111070367A
Application number: CN201911366865.9A
Authority: CN
Inventors: 刘钦
Original assignee: Dongguan Huizhong Cork Products Co Ltd
Current assignee: Dongguan Huizhong Cork Products Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-28

Abstract

The invention relates to the technical field of cork processing, and discloses a coffee cork and a preparation method and application thereof. The preparation method of the coffee cork provided by the invention has the characteristics of simple process and low cost through the processes of mixing, stirring, pressing, baking, cooling and slicing. Meanwhile, the invention also discloses application of the coffee cork in cases, shoe materials, artware and packaging products.

Description

Coffee cork and preparation method and application thereof

Technical Field

The invention relates to the technical field of cork processing, in particular to coffee cork and a preparation method and application thereof.

Background

Cork (Phellem), commonly known as Chinese pine, cork bark, is a well-developed bark product of tree species, with the surface protective tissue after the stems and roots have grown coarse. Ancient Egypt, Greek and Roman were used to make fishing net floats, shoe-pads, bottle stoppers, etc. The main tree species for producing cork is Quercus suber and Quercus suber, and the first harvest and peeling can be carried out on the plants which are usually 20 years or more and have the diameter at breast height of more than 20 cm, and the obtained skin is called as first skin or hide. And later, the leather is picked and peeled every 10 to 20 years, the obtained leather is called regenerated leather, and the thickness of the leather is more than 2 cm.

Cork consists of many flat cells arranged in a radial pattern. The cellular cavities often contain resins and tannin compounds and are filled with air, so that cork is often colored, light and soft in texture, elastic, impervious to water, not susceptible to chemicals, and a poor conductor of electricity, heat and sound. Consists of 14-sided dead cells, which are arranged radially with respect to one another in the form of hexagonal prisms. The typical cell diameter is 30 microns, and the cell thickness is 1-2 microns. There are conduits between the cells. The space between two adjacent cells is composed of 5 layers, two of which are fibrous, followed by two layers of cork, the middle of which is a layer of wood, with more than 5000 ten thousand cells per 1 cubic centimeter.

Due to the structure of the cork, the cork leather has the advantages of good elasticity, sealing property, heat insulation property, sound insulation property, electrical insulation property and friction resistance, and no toxicity, no smell, small specific gravity, soft hand feeling, difficult ignition and the like, and no artificial product can be compared with the cork leather to date. Chemically, the ester mixture formed by several hydroxy fatty acids and phenolic acids is a characteristic component of cork, collectively called cork resin.

Because of corrosion resistance and chemical corrosion resistance, the cork grease has no chemical effect on water, grease, gasoline, organic acid, salt, ester and the like except for the action of corrosion on concentrated nitric acid, concentrated sulfuric acid, chlorine, iodine and the like. The method has wide application, such as bottle stopper making, refrigeration equipment heat insulation layer, life buoy, sound insulation board and the like.

However, because no artificial products can be substituted in the market, and the trees of the quercus suber and the quercus variabilis need a long time in the growing process, the consumption is continuously increased, and the resources are more and more scarce, so that the emergence of cork which saves raw materials is urgently needed.

Disclosure of Invention

Aims to solve the problem that the traditional cork is made of natural trees and causes resource shortage. The first object of the present invention is to: the coffee cork recycled by waste materials is environment-friendly, saves raw materials and has the unique aroma of coffee.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the coffee cork comprises the following components in percentage by weight: 55-65% of coffee grounds, 20-30% of cork particles and 10-20% of glue.

Further, the components comprise the following components in percentage by weight: 60% of coffee grounds, 25% of cork particles and 15% of glue. .

Further, the glue is R96C-0.5 resin glue.

Further, the cork particles are particles obtained by crushing imported cork oak barks.

In order to solve the above problem of resource shortage, the second screen of the present invention is: the preparation method of the coffee cork with the recycled waste materials has the characteristics of low processing cost and simple process.

the preparation method of the coffee cork comprises the following steps:

a) weighing the materials of the components according to the weight percentage of claim 1;

b) pouring the weighed coffee grounds and the cork granules into a stirrer, and fully stirring the mixture until the mixture is uniform, wherein the stirring time is 30-35 minutes;

c) adding 15% of glue into the uniformly stirred mixture, and continuously stirring for 30-40 minutes;

d) pouring the mixture which is uniformly stirred again into a mould in a press for pressing;

e) placing the pressed mould into an oven for high-temperature forming to obtain a semi-finished product, wherein the baking time is not less than 10 hours, and the temperature is controlled at 105-;

f) drawing the semi-finished product out of the oven to cool for at least 48 hours;

g) and cutting the cooled semi-finished product on a horizontal cutting machine into coffee grounds cork pieces with the thickness of 0.1-0.3 mm.

Further, after the step g), the following steps are also included:

h) the coffee grounds cork sheet is stuck on TC cloth, microfiber PU or aqueous PU by aqueous glue.

Further, after the step h), the following steps are also included:

i) and (4) putting the pasted coffee grounds and cork sheets into a buffing machine for processing, and buffing off 0.05 mm.

Further, after the step i), the following steps are also included:

j) and (3) putting the ground coffee grounds into a surface treatment machine for grinding until the surface is smooth.

Further, the press employs a pressure of 150 tons.

The invention also provides application of the coffee cork in cases, shoe materials, artware, wallpaper, floors, wallboards and packaging products.

Compared with the prior art, the invention has the following beneficial effects:

1. the coffee cork disclosed by the invention has the main raw material of waste coffee grounds, so that waste garbage is recycled, the emission of the garbage is reduced, and the use of cork oak wood is greatly reduced, thereby fundamentally and greatly relieving the shortage problem of cork oak resources.

2. Because the coffee grounds adopted in the coffee cork have special fragrance, the finally prepared coffee cork not only has the function completely comparable with the existing cork, but also has more characteristics and environmental protection.

3. The preparation method of the coffee cork provided by the invention mainly adds a large amount of coffee grounds, so that the problem of resource shortage is relieved, and the production cost is greatly reduced. Then the coffee grounds and the cork particles are combined together through glue, and the process of preparing the coffee grounds cork sheet is completed through pressing, baking, cooling and slicing.

4. The coffee cork prepared by the preparation method has wide application, can be used as a case, a shoe material, an artwork, wall paper, a floor, a wall board and a packaging product, is environment-friendly, and has coffee fragrance.

Detailed Description

The present invention is described in detail below for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the description of the present invention is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

The invention provides coffee cork, which comprises the following components in percentage by weight: 55-65% of coffee grounds, 20-30% of cork particles and 10-20% of glue.

Among them, coffee grounds are usually waste grounds after being recycled from large coffee shops, for example, in large coffee shops such as starbucks, the consumed quantity of coffee is huge every day, especially in a two-line city, so that the coffee grounds produced by the coffee shops are recycled, not only the existing resources are reused, but also the quality and the quality of the coffee grounds are guaranteed, and therefore, the coffee grounds also play an important role in the quality of coffee cork prepared in the later period.

The cork particles are particles obtained by crushing imported cork oak barks, and because the bark of cork oak needs to be grown for 20 years or more and the bark of cork oak needs to be harvested and peeled for the first time when the breast diameter is more than 20 cm, the cork particles are not only in short supply but also very high in price. Therefore, the waste coffee grounds are used as main components, and a small amount of cork particles are added, so that the cork raw materials are greatly saved, and the great contribution to the development of the industry has to be said.

The glue is resin glue with the specific model of R96C-0.5, and is special glue for oily cork wood.

Example 1:

weighing the following materials in percentage by weight: 60% of coffee grounds, 25% of cork particles and 15% of glue.

Specifically, the preparation method of the coffee cork comprises the following steps:

1. and pouring the weighed coffee grounds and the weighed cork granules into a stirrer for fully stirring, wherein the stirring time is 32 minutes.

2. And (3) adding glue into the uniformly stirred mixture in the step (1), and continuously stirring for 35 minutes.

3. And (3) pouring the mixture uniformly stirred in the step (2) into a die in a press for pressing, wherein the press adopts 150 tons of pressure for pressing, so that the mixture is not easy to crack, and the mixture and the die are combined more firmly.

4. Placing the die pressed in the step 3 into an oven for high-temperature forming, wherein the baking time is 10 hours, and the temperature is controlled at 110 ℃ to obtain a semi-finished product;

5. and (4) drawing the semi-finished product obtained in the step (4) out of the oven to cool for 50 hours.

6. And (5) placing the semi-finished product cooled in the step (5) on a horizontal cutting machine to cut into wood chips with the size of 0.2mm to obtain the coffee grounds cork chips.

Example 2:

this embodiment differs from embodiment 1 only in that: weighing the following materials in percentage by weight: 55% of coffee grounds, 30% of cork particles and 15% of glue.

Example 3

This embodiment differs from embodiment 1 only in that: weighing the following materials in percentage by weight: 65% of coffee grounds, 20% of cork particles and 15% of glue.

Example 4

This embodiment differs from embodiment 1 only in that: weighing the following materials in percentage by weight: 58% of coffee grounds, 22% of cork particles and 20% of glue.

Example 5

This embodiment differs from embodiment 1 only in that: weighing the following materials in percentage by weight: 62% of coffee grounds, 26% of cork particles and 12% of glue.

Example 6

This example differs from example 1 only in the preparation method: after step 6, further comprising:

and (3) attaching the coffee grounds cork sheet obtained in the step (6) to TC cloth, microfiber PU or aqueous PU by using aqueous glue (the specific model is 102H), so that different TC cloth coffee grounds cork, microfiber PU coffee cork or aqueous PU coffee grounds cork can be prepared, the fastness of the coffee grounds cork is improved, and meanwhile, the coffee grounds cork sheet is favorable for being prepared into a series of subsequent products, such as wall panels, floors, decorative plates and the like.

Example 7

This example differs from example 6 only in the preparation method: after step 7, further comprising:

and (4) putting the coffee grounds and cork sheets obtained in the step (7) into a buffing machine for processing, and grinding off 0.05mm to enable the prepared coffee cork to be finer and smoother.

Example 8

This example differs from example 7 only in the preparation method: after step 8, further comprising:

and (4) putting the coffee grounds cork sheets obtained in the step (8) on a surface treatment machine for grinding until the surface is smooth.

Example 9:

this embodiment differs from embodiment 8 only in that: weighing the following materials in percentage by weight: 55% of coffee grounds, 30% of cork particles and 15% of glue.

In the preparation method, the stirring time of the step 1 is 35 minutes, the stirring time of the step 2 is 40 minutes, the baking time is 10.5 hours, the cooling time is 51 hours, and the thickness of the slice is 0.1 mm.

Example 10:

this embodiment differs from embodiment 8 only in that: weighing the following materials in percentage by weight: 65% of coffee grounds, 20% of cork particles and 15% of glue.

In the preparation method, the stirring time of the step 1 is 30 minutes, the stirring time of the step 2 is 36 minutes, the baking time is 11 hours, the cooling time is 49 hours, and the thickness of the slice is 0.3 mm.

Example 11:

this embodiment differs from embodiment 8 only in that: weighing the following materials in percentage by weight: 58% of coffee grounds, 22% of cork particles and 20% of glue.

In the preparation method, the stirring time of the step 1 is 33 minutes, the stirring time of the step 2 is 36 minutes, the baking time is 10.5 hours, the cooling time is 49 hours, and the thickness of the slice is 0.15 mm.

Example 12:

this embodiment differs from embodiment 8 only in that: weighing the following materials in percentage by weight: 62% of coffee grounds, 26% of cork particles and 12% of glue.

In the preparation method, the stirring time of the step 1 is 31 minutes, the stirring time of the step 2 is 39 minutes, the baking time is 11 hours, the cooling time is 50 hours, and the thickness of the slice is 0.25 mm.

Comparative example 1:

cork is made from conventional raw materials and is not described in detail herein because of the prior art.

The softwoods of examples 1-12 and comparative example 1 were compared:

according to the above table, it can be seen that the coffee cork of the present invention saves cork raw material by at least 55% compared to the existing cork, which can generate hundreds of millions of values in the manufacturing industry, and the coffee residue itself has the special flavor of coffee, so that the cork and its application products have unique flavor.

Meanwhile, the cork particles are originally environment-friendly and natural, but the coffee grounds can be regarded as garbage. Therefore, the invention also solves the problem of the discharge of the waste coffee grounds by utilizing the waste regeneration technology. If the coffee grounds are popularized vigorously and should be used, the problem of treating the coffee grounds all over the world can be solved. Billions of people drink coffee every day all over the world, and billions of tons of coffee residue garbage can be generated, thereby contributing to energy conservation and environmental protection all over the world.

The coffee corks prepared in examples 1-12 were applied to luggage, shoe materials, artware, wallpaper, flooring, wall board, and packaging, respectively, although not limited to those listed, and may be applied to other similar materials. Because the coffee cork has coffee aroma and the manufacturing cost is greatly reduced, the coffee cork not only adds the special aroma of coffee but also reduces the cost of the products when being applied to cases, shoe materials, artware and packaging products, and is worthy of great popularization.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. The coffee cork is characterized by comprising the following components in percentage by weight:

55-65% of coffee grounds, 20-30% of cork particles and 10-20% of glue.

2. The coffee cork of claim 1, wherein the components comprise, in weight percent:

60% of coffee grounds, 25% of cork particles and 15% of glue. .

3. A coffee cork according to claim 1 or 2, characterized in that:

the glue is R96C-0.5 resin glue.

4. A coffee cork according to claim 1 or 2, characterized in that:

the cork particles are particles obtained by crushing imported cork oak barks.

5. A method of preparing coffee cork according to any of the claims 1-4, characterized in that it comprises the following steps:

6. A method of making coffee cork according to claim 5, characterized in that:

after step g), the following steps are also included:

7. The method of making coffee cork according to claim 6, characterized in that:

after step h), the following steps are also included:

8. The method of making coffee cork according to claim 7, characterized in that:

after the step i), the following steps are also included:

9. The method of making coffee cork according to claim 6, characterized in that:

the press used a pressure of 150 tonnes.

10. Use of the coffee cork prepared by the coffee grounds cork preparation method according to any one of claims 5-8 in cases, shoe materials, artware, wallpaper, floors, wallboards and packaging products.