JPH03123701A - Production of leaf vein - Google Patents

Abstract

PURPOSE:To carry out mass-production of the leaf vein by immersing leaves in a strong alkaline solution, heating the solution, removing the solution, subsequently carrying out ultrasonic cleaning of the mesophylls of the leaves and readily removing only the mesophylls in a short time with certainty without lowering the commodity value. CONSTITUTION:For example, plant leaves 1 such as oak leaves are put in a strong alkaline solution 2 and heated and the alkaline solution is then removed by water washing, etc. The plant leaves are subsequently put in an ultrasonic washing machine 6 (preferably about 38 KHz) for ultrasonic cleaning and finally washed with water to obtain the remained vein (A). After bleaching or dyeing thereof, drying is carried out to produce the objective leaf vein (A). The above- mentioned method can provide advantageously articles having a high commodity value in a high yield and at a low cost as the method is entirely free from damage to the vein.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for producing leaf veins of plants.

[Conventional technology]

Conventionally, plant leaf veins have been produced by soaking raw leaves in a sodium hydroxide solution to soften them, and then scrubbing with a brush or the like to remove the mesophyll, leaving only the leaf veins.

[Problem to be Solved by the Invention 1] However, in the conventional method described above, in order to completely remove the mesophyll, it is necessary to scrape off the mesophyll one by one with a soft brush, which takes a lot of effort and time. However, mass production was impossible.

Furthermore, failures such as damage to leaf veins are unavoidable, resulting in lower commercial value and lower yields.

The present invention was developed in view of the above-mentioned problems of the conventional technology, and by ultrasonically cleaning raw material leaves after alkali treatment, they can be easily and quickly processed without reducing the commercial value. To provide a method for manufacturing leaf veins of plants that can be mass-produced and can reliably remove only the mesophyll.

[Means for solving problems]

In order to achieve the above object, the method for producing leaf veins of plants according to the present invention involves immersing raw material leaves in a strong alkaline solution and heating them;
After that, the mesophyll of the raw material leaf after removing the strong alkaline solution is removed by ultrasonic cleaning.

[Effect]

By immersing and heating raw material leaves in a strong alkaline solution to soften them, and then cleaning the raw material leaves with ultrasonic waves, only the mesophyll can be quickly and reliably removed without damaging the leaf veins.

[Example J Hereinafter, one embodiment of the present invention will be described based on the drawings.

First, as the raw material leaves used in the present invention, it can be said that most leaves of plants can be used as long as they are leaves of plants, such as oak leaves, beech leaves, chestnut leaves, and maple leaves.

Therefore, if we take as an example a bundle 1 of 50 phase leaves as raw material leaves, we will immerse this 50-sheet bundle 1 in a sodium hydroxide solution 2 as a strong alkaline solution of around 20%, and spread it evenly over the entire phase leaf 1. 90-100 after infiltrating solution 2
Heat at ℃ for about 20-30 minutes.

Detailing the above immersion and heating methods, there are the following two methods.

B. Place the phase leaf 1 into a container 3 containing approximately 20% sodium hydroxide solution 2 to the extent that the bundle 1 of 50 phase leaves is covered. At this time, if you break up the 50 sheets and soak them one by one, the solution 2 will evenly cover the entire leaf l of the phase, so you can heat it immediately, but if you put it in a bunch, you can soak it in the liquid. In order to blend the leaves well, it is best to massage them in the liquid to drive out the air and water between the leaves, allow the liquid to penetrate, and then heat the leaves after leaving them for at least an hour.

A bundle of 50 leaves of the mouth and phase leaves is placed in a heat-resistant polyethylene bag 4 about 20 cm long and 13 cm wide, about 250 mI2 of about 20% sodium hydroxide solution is poured into the bag, and the bag is vacuum packed.

Next, massage the vacuum-packed product with your hands so that the liquid soaks into the areas where the leaves overlap.

If you repeat this process several times and leave it for a day or night, the above sodium hydroxide solution will permeate all the leaves, so put each bag in hot water 5 boiled at 100℃ in a container for about 20 to 20 minutes. Heat for 30 minutes.

Both of the above-mentioned methods (A) and (2) will soften the leaves 1 to a suitable degree, but the (2) method is better because it is easier to work with and only requires a small amount of sodium hydroxide 2.

Next, most of the sodium hydroxide is removed by washing with water, and neutralized with an acidic aqueous solution such as hydrochloric acid.

Next, only the mesophyll is removed by ultrasonic cleaning the phase leaf 1 that has been neutralized as described above.

More specifically, when the above phase leaf 1 is placed in the ultrasonic cleaner 6 of 3sKux and the ultrasonic cleaner 6 is operated, the mesophyll of the phase leaf L is completely removed leaving only the veins. Ru.

The number of phase leaves to be put into the ultrasonic cleaner 6 and the operating time vary slightly depending on the performance of the ultrasonic cleaner 6, the size and thickness of the phase leaves 1, etc., but the above 38KH ultrasonic cleaner 6 It took 30 seconds for 10 to 20 sheets.

Of course, the larger the number of leaves to be washed, the longer the washing time will be.
However, even with 30 sheets, it only took about 1 to 2 minutes.

Finally, by washing with water, the leaf veins A remain.
This is bleached or dyed and dried, and the leaf vein A is attached to a sheet material impregnated with a urethane resin, for example, to produce packaging materials, decorative materials, etc.
Used for stationery, office supplies, toys, etc. Furthermore, a three-dimensional decorative pattern can be formed by directly pasting the leaf veins A onto the product.

〔Effect of the invention〕

As described above, the present invention is a method for producing plant leaf veins in which the raw material leaves treated with a strong alkaline solution are subjected to ultrasonic cleaning to remove the mesophyll, leaving only the leaf veins.
The mesophyll can be easily and reliably removed in a short period of time, and since the leaf veins are not damaged at all, products with high commercial value can be manufactured at low cost with good yield.

In trials, the manufacturing time was reduced by a factor of 5 to 10 compared to conventional methods.

[Brief explanation of drawings]

FIG. 1 is a process diagram of the method for manufacturing leaf veins of plants according to the present invention. Leaf veins of main sign phases in the diagram Strongly alkaline solution ultrasonic cleaner

Claims (1)

[Claims] The leaves of the raw material are immersed in a strong alkaline solution and heated, and then
A method for producing leaf veins of plants, which comprises removing the mesophyll of the raw material leaves by ultrasonic cleaning after removing the strong alkaline solution.