KR20200053758A - Processing Method of Bamboo and Method for Manufacturing Lampshape Using Bamboo - Google Patents

Abstract

The present invention discloses a method for processing a bamboo cask for preventing or slowing down the cracking phenomenon of the bamboo cask, and a method for manufacturing a lampshade using the bamboo cask obtained by the processing method. The method for processing the bamboo cask comprises the following steps: (a) manufacturing the bamboo cask; (b) immersing the bamboo cask in any one immersion solution selected from a group consisting of (i) an aqueous solution of boric acid, (ii) an additive solution of a hot water extract of bamboo leaf and bamboo bark to the aqueous solution of boric acid, (iii) a mixture of the additive solution and a bamboo vinegar, and (iv) a mixture of the additive solution and bambusae caulis; and (c) drying the same after immersion.

Description

Processing Method of Bamboo and Method for Manufacturing Lampshape Using Bamboo}

The present invention relates to a method for processing a bamboo barrel and a method for manufacturing a lampshade using the bamboo barrel.

In most lighting devices, the lampshade is the most important factor in determining the overall aesthetics of the lighting device. Such lampshade is usually made of a glass or metal material, and when a lampshade is manufactured using a bamboo barrel, it can have a high aesthetic effect such as naturalness and luxury provided by natural materials, compared to ordinary materials such as glass and metal materials. .

However, bamboo barrels have a problem of vertical cracking over time, and in particular, in order to utilize the lampshade, in order to use the lampshade, the lampshade must be used semi-permanently (at least 3-4 years or more) without cracking. A technology capable of preventing cracking is essential.

The present invention discloses a technique for preventing the cracking phenomenon of a bamboo barrel and a method for manufacturing a lampshade using a bamboo barrel to which such a technique is applied.

An object of the present invention is to provide a bamboo barrel processing method for preventing or slowing the cracking phenomenon of the bamboo barrel.

Another object of the present invention is to provide a method for manufacturing a lampshade using a bamboo barrel obtained by the processing method.

Other or specific objects of the present invention will be presented below.

As described above, in order to utilize the bamboo barrel as a lampshade, a technique for preventing or slowing the cracking phenomenon of the bamboo barrel is required.

To this end, the present inventors immersed the bamboo barrel in an aqueous solution of boric acid, or immersed in an aqueous solution of bamboo leaf and bamboo skin added to the aqueous solution of boric acid, or further immersed in an aqueous solution of bamboo shoots. In this case, it was confirmed that the cracking phenomenon was very clearly prevented or delayed.

In consideration of the above, the present invention is (a) preparing a bamboo barrel, (b) the bamboo barrel, (i) a boric acid aqueous solution, (ii) an additive solution of a hot water extract of bamboo leaf and bamboo bark to the boric acid aqueous solution, (ii) immersed in any one immersion solution selected from the group consisting of a mixture of the additive solution and the bamboo vinegar solution and (iv) a mixture solution of the additive solution and the gruel, and (c) immersed and dried. .

In the method of the present invention, the bamboo barrel can be obtained from any bamboo as long as the barrel has a diameter suitable for use as a lampshade. Typically, it will be obtained from porridge, maengjong porridge, royal crest, etc.

In addition, according to the experiences of the present inventors, since the bamboo barrel has high flexibility and strength when the moisture content is about 10%, and less cracking occurs, the following examples are provided when preparing the bamboo barrel of step (a). It is preferable to prepare by maintaining the moisture content at about 10% by uniformly drying it through a method such as drying in a well-ventilated place as in or using hot-air drying using a commercially available device.

In the method of the present invention, in order to uniformly remove internal moisture such as a tube bundle of a bamboo barrel using an osmotic pressure phenomenon, the bamboo barrel preparation step of step (a) is performed by immersing the bamboo barrel in brine to artificial temperature. It may include a step of heating for about 20 minutes to 5 hours by placing the bamboo barrel in brine to leave it for 1 to 3 days at room temperature without adjustment or to quickly perform it. At this time, the heating time may vary depending on the heating temperature. In the examples below, heating was performed at a temperature of 90 ° C to 95 ° C for 30 minutes. In addition, the salt concentration of the brine may not be uniformly removed from the bamboo barrel when it is too high, and when the salt concentration is too low, the moisture inside the bamboo barrel may not be sufficiently removed, so the salt concentration is 3 to 12. The% (w / v) range is preferred.

In the method of the present invention, the immersion step in step (b) is a step for preventing or slowing the cracking phenomenon by infiltrating the immersion liquid component in a bamboo barrel, using a boric acid aqueous solution, or heating the bamboo leaf and bamboo skin in the boric acid aqueous solution. It can be used by adding an extract or by adding more bamboo vinegar solution. The following examples show that the initial cracking phenomenon is delayed in all cases, regardless of the amount of addition, when the hot water extract of bamboo leaf and bamboo skin is used, compared to the case of using a boric acid aqueous solution. Even in this case, the initial cracking phenomenon is slower in all cases regardless of the amount of the addition.

In the case of the aqueous boric acid solution, the concentration of boric acid is preferably used in the range of 3 to 8% (w / v) according to the experience of the present inventors for the purpose of preventing or slowing the cracking phenomenon, bamboo leaf and bamboo skin It is preferable that the amount of the hot water extract added to the aqueous boric acid solution is in the range of 1 to 6% (w / v) when it is based on the powdery form in which water as the extraction solvent is completely removed. When preparing a boric acid aqueous solution, boric acid may be directly mixed with water, but borax may be mixed with water, or both boric acid and borax may be mixed with water. The hot water extract of the bamboo leaf and bamboo bark can be used as a filtrate phase or as a concentrated liquid with some extraction solvent removed. In this case, considering the extraction yield, an appropriate addition range is adjusted according to the addition range according to the powder phase. Can decide. Here, the hot water extraction may be performed for 3 hours to 24 hours in a temperature range of 70 ° C to 100 ° C, and may be used without removing or removing the extraction residue by filtration, but is preferably used by removing the extraction residue by filtration. It is preferable to use the extract of hot water of bamboo leaf and bamboo skin immediately after extraction, but matured ones (those left at room temperature in an extract state) can be used, and when using matured ones, 6 months or less, especially 1 month or less It is preferable to use those aged with. According to the experience of the present inventors, when using an aged extract, the antibacterial effect is further increased and the anti-cracking effect is also better.

In the above, the bamboo shoots are like fish scales that wrap bamboo shoots and become longer as they go up, and green tongue leaves are attached to the ends. Bamboo extract may be used in its full form upon extraction, or may be used in a crushed or finely divided form, and the bamboo skin may be used regardless of the kind of bamboo from which it is obtained, for example, those obtained from blind rice porridge, rice cake, royal belt, cotton wool, and the like. Bamboo leaves can also be used wherever they are obtained, and bamboo leaves can also be used, for example, from bamboo, bamboo, bamboo, cotton, etc. Both bamboo and bamboo leaves have antimicrobial activity wherever they are obtained and have the effect of preventing or slowing down the cracking of the bamboo barrel.

On the other hand, the following examples show that when using an immersion liquid containing bamboo vinegar or bamboo power, the number of days for the first cracking of the bamboo barrel is significantly slower regardless of the range of the addition. When using an immersion solution added with bamboo vinegar solution or bamboo power, the addition amount is based on 100 parts by weight of a boric acid aqueous solution to which hot water extracts of bamboo leaf and bamboo skin are added in consideration of the following examples, 10 to 40 parts by weight, particularly 10 to 20 parts by weight Addition is preferred. This is because the anti-cracking effect is better in both the bamboo vinegar solution and the bamboo power in this range. The bamboo vinegar liquid may be a crude vinegar liquid obtained by collecting and cooling and condensing smoke generated when carbon is directly carbonized, but preferably, the crude bamboo vinegar liquid obtained by discarding the upper and lower layers of the oily layer after standing the bamboo vinegar liquid is allowed to stand. It is the case to use. This purified bamboo vinegar solution may be used as a more purified bamboo vinegar solution by further removing tar components by a static method, a distillation method (decompression distillation method or an atmospheric distillation method), or a filtration method (using filter paper and / or activated carbon). There are no particular restrictions on the kind of bamboo that can be used in obtaining such bamboo vinegar liquid. In the case of bamboo juice, which is a juice liquid that flows out when indirectly heating rice bran, etc. by putting bamboo on a pottery, etc., it is preferable to use the purified intermediate layer obtained by removing the upper and lower layers.

On the other hand, when the bamboo barrel is immersed in the immersion liquid, it is preferable that the immersion liquid component is uniformly penetrated to the deep portion, and it is preferable that the immersion liquid is immersed for 15 days.

In the method of the present invention, all of the immersion liquid components are substances having antibacterial activity, and thus, even in summer weather with high humidity and temperature, it is possible to prevent cracking due to mold or bacteria propagation.

After the immersion in the method of the present invention, the drying step of step (c) is a step for removing the immersion liquid of the bamboo barrel and adjusting the moisture content to about 10% for preventing or minimizing cracking, usually by hot air drying It can be done by shade in a well-ventilated place, or by mixing the two. At this time, for uniform drying, it is preferable to rotate the bamboo barrel at an appropriate cycle time according to the drying method, and the hot air temperature during hot air drying may be determined in consideration of the drying time. In order to prevent or minimize the cracking phenomenon through uniform drying inside and outside the bamboo barrel, the hot air temperature and the drying step may be varied to perform stepwise, for example, 2 hours at 50 ° C, 1 hour at 100 ° C, 150 This is the case when it is carried out for 1 hour at ℃.

In another aspect, the present invention relates to a method for manufacturing a lampshade using a bamboo barrel obtained by a method for processing a bamboo barrel as described above.

The method of the present invention (a) cutting the processed bamboo barrel to a certain length, (b) cutting the cut bamboo barrel in the longitudinal direction, (c) connecting the bamboo barrel cut in the longitudinal direction And restoring to a cylindrical shape.

In the method of the present invention, the cutting step of (a) may be made to have an appropriate length in consideration of the length of the lampshade. Usually it will be about 30cm to 40cm in length.

In addition, in the method of the present invention, the cutting in the longitudinal direction (ie, the vertical direction) of (b) is to further enhance the anti-crack effect through the cutting. If it is cut in the vertical direction, it causes the vertical cracking to be slowed.

In addition, in the method of the present invention, after the step (b), an appropriate design can be provided by cutting the bamboo barrel. In the case of engraving or drawing a design on the surface of the bamboo barrel, any step is possible in the method of the present invention, but when the design is put by cutting the bamboo barrel as shown in FIG. desirable.

In addition, in the method of the present invention, after the step (b), the bamboo barrels cut in the longitudinal direction are connected to each other to restore the cylinder shape to be used as a lampshade. At this time, restoration to the cylindrical shape may be achieved by connecting the cut bamboo barrel with an adhesive such as a bond having excellent adhesion, or by connecting the bamboo barrel with an appropriate connecting means inside one or both ends of the bamboo barrel so as not to damage the appearance. In the attached FIG. 1, the front portion to which the design is given is not connected, but only the rear portion is connected with a bonding adhesive for woodworking.

According to the present invention as described above, it is possible to provide a method for processing a bamboo barrel for preventing or slowing the cracking phenomenon of the bamboo barrel, and to provide a method for manufacturing a lampshade using the bamboo barrel thus processed. When the lamp shade is manufactured using the processed bamboo barrel, it can have a high aesthetic effect such as naturalness and luxury.

1 is a photo of a bamboo barrel lampshade actually produced.

Hereinafter, the present invention will be described with reference to Examples and Experimental Examples. However, the scope of the present invention is not limited to these examples and experimental examples.

<Example> Example of manufacturing a bamboo lamp lampshade

<Example 1> Preparation example 1 of bamboo barrel lampshade

After selecting and washing the bamboo of the porridge of about 3 years, it was shaded so that the moisture content was about 10% in a well-ventilated place. Next, the mixture was placed in brine having a concentration of 8% (w / v), heated at a temperature of 90 ° C to 95 ° C for 30 minutes, and shaded so that the moisture content was about 10% in a well-ventilated place.

Then, using a 5% (w / v) aqueous boric acid solution as an immersion solution, the above-mentioned shaded bamboo barrel was added to the immersion solution and immersed for 15 days, thereby providing an antibacterial effect and a crack prevention effect.

After that, the bamboo barrel was dried for 12 hours or more at a temperature of 100 ° C. or more in a hot air dryer, and then dried in a well-ventilated place so that the moisture content was about 10%. After that, in order to use it as a lampshade, the bamboo barrel is cut to a thickness of about 35 cm in the length direction, and then cut again in the length direction to further enhance the cracking effect, and the appropriate design (whale shape) is given, and then the length direction is inside from both ends. It was restored to its original cylindrical shape by connecting the cut bamboo barrel. A photograph of the bamboo barrel lampshade thus manufactured is shown in FIG. 1.

<Example 2> Preparation Example 2 of bamboo barrel lampshade

In the same manner as in Example 1, a bamboo barrel is processed and a lampshade is prepared using the processed bamboo barrel, but the immersion liquid for preventing the cracking is in a 5% (w / v) boric acid aqueous solution, bamboo leaf and bamboo skin mixture The immersion liquid obtained by adding 3% (w / v) of hot water extract powder was used. Here, the hot water extract powder of the bamboo leaf and bamboo skin mixture is added with 10 times the weight of water to the mixture of the same weight of the bamboo leaf and bamboo skin, extracted with hot water at a temperature of 80 ~ 90 ℃ for 12 hours, filtered to remove the extraction residue, and the filtrate is removed. It was concentrated under reduced pressure and freeze-dried to obtain a powder.

<Example 3 to> Preparation Example 3 to of bamboo lamp shade

In the same manner as in Example 1 or 2, a bamboo barrel was processed and a lampshade was prepared using the processed bamboo barrel. However, an immersion liquid having the composition shown in Table 1 below was used as an immersion liquid for preventing the cracking phenomenon. The bamboo vinegar solution and bamboo power below were mixed with 10 to 40 parts by weight based on 100 parts by weight of a 5% boric acid aqueous solution to which bamboo leaf and bamboo skin hot water extracts were added.

Composition of immersion liquid division 5% boric acid aqueous solution Bamboo leaf and bamboo skin hot water extract powder% (w / v) Bamboo vinegar
Parts by weight Death force
Parts by weight Example 3





100 5 - - Example 4 4 - - Example 5 2 - - Example 6 3 10 - Example 7 3 20 - Example 8 3 30 - Example 9 3 40 - Example 10 3 - 10 Example 11 3 - 20 Example 12 3 - 30 Example 13 3 - 40

 The bamboo vinegar solution used was a bamboo vinegar solution from Damyang-gun and a purified bamboo vinegar solution obtained from a bamboo plant maker and a purified bamboo power. According to the manufacturer's description, the purified bamboo vinegar liquid is obtained by discarding the upper and lower layers of the oily layer from the crude bamboo vinegar liquid obtained by trapping and condensing the smoke generated by carbonizing bamboo, and the purified mortality is also obtained from the bamboo dope solution. It was obtained by discarding the upper and lower layers and recovering the middle layer.

<Experimental Example> Measurement of cracking phenomenon of bamboo barrel

The cracking phenomenon of the processed bamboo barrel obtained in each of the above examples was allowed to stand for 4 years in outdoor shade at room temperature, and the number of days until the first cracking occurred was measured.

For each example, 10 processed bamboo barrels were used as specimens, and the results are shown in Table 2 below as the average number of days for the 10 processed bamboo barrels. All of the specimens were made of solid wood, which was processed before being made into a lampshade, and as a comparative example, the number of days in which the first cracking would occur was measured by leaving the bamboo bucket without any treatment in the shade.

The number of days that the first crack occurred division Number of days the first crack occurred Example 1 527.6 Example 2 864.6 Example 3 787.5 Example 4 684.7 Example 5 654.6 Example 6 1224.6 Example 7 1342.5 Example 8 1117.7 Example 9 1054.5 Example 10 943.4 Example 11 957.3 Example 12 894.6 Example 13 874.8 Comparative example 287.5

When referring to the results of Table 2, the first cracking phenomenon occurred significantly later when the hot water extract of the bamboo leaf and bamboo skin mixture was used (Examples 2 to 5) rather than when only the boric acid aqueous solution was used (Example 1). The first cracking occurred in the case where it was used as a 3% (w / v) hot water extract of bamboo leaf and bamboo bark in an aqueous solution of boric acid (Example 2). In order to further slow the cracking phenomenon, when the purified bamboo vinegar solution was added to the immersion solution of Example 2, the first cracking effect was generally slowed down. In particular, the effect was best when added to 10 to 20 parts by weight. Did. On the other hand, in the case of using the purified bamboo power known to be prepared similar to the bamboo vinegar solution (Examples 10 to 13), as shown in Table 2, there was an effect of slowing the initial cracking phenomenon, but it was found to be significantly lower than the bamboo vinegar solution.

Claims (7)

(a) preparing a bamboo barrel, (b) the bamboo barrel, (i) an aqueous solution of boric acid, (ii) an additive solution of a hot water extract of bamboo leaf and bamboo bark to an aqueous solution of boric acid, (ii) A method of processing a bamboo barrel, comprising immersing in a immersion liquid selected from the group consisting of a mixed liquid and (iv) a mixture of the additive liquid and the gruel, and (c) immersing and drying.
According to claim 1,
The boric acid aqueous solution is characterized in that the boric acid concentration is 3 to 8% (w / v) range.
According to claim 1,
The method, characterized in that the hot water extract of the bamboo leaf and bamboo skin is added to the aqueous boric acid solution in a powder form in the range of 1 to 6% (w / v).
According to claim 1,
The bamboo vinegar solution or bamboo power is characterized in that the addition of 10 to 40 parts by weight based on 100 parts by weight of the additive solution.
According to claim 1,
The bamboo vinegar solution or the killing power is characterized in that 10 to 20 parts by weight based on 100 parts by weight of the additive solution.
(A) cutting the bamboo barrel processed by the method according to any one of claims 1 to 5 to a certain length, (b) cutting the cut bamboo barrel in the longitudinal direction, (c) length Method of manufacturing a lampshade comprising the step of restoring a cylindrical shape cut in the direction to restore a cylindrical shape
The method of claim 6,
After the step (b), the method further comprising the step of imparting an appropriate design by cutting the bamboo barrel.

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