JPH0532520B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to paper, and more particularly to paper using plant fibers of apple fruits. (Prior Art) Paper is generally manufactured using wood fibers and non-wood fibers such as hemp and cotton as papermaking raw materials. In addition, the invention of using the white fibers of citrus fruits as a raw material for papermaking was published in JP-A-Sho.
Proposed as No. 56-144300. (Problem to be solved by the invention) However, currently most wood fibers are used as the material for paper, and with the increase in paper consumption in recent years, forest resources that serve as materials are being depleted, and wood fibers are being replaced. Research and development of paper-making fibers is desired. In order to meet such demands, an invention has been proposed in which paper is made by adding white fibers from citrus fruits to a semi-liquid liquid obtained by dissolving used paper (Japanese Patent Application Laid-Open No. 144300/1982). The texture is the white or whitish-yellow fibrous part called arpeda, which is found on the inner surface of the outer skin of mandarin oranges, summer mandarin oranges, etc. By the way, the main component of Alpeda is pectin, and the above-mentioned white fiber contains almost no cellulose or semicellulose, making it unsuitable as a papermaking material. Furthermore, the above-mentioned invention requires a special process to collect the above-mentioned white fibers, resulting in a problem of high cost. The present invention has been made in view of the problems of the conventional techniques as described above, and its purpose is to use only the residue after squeezing fruit juice as a papermaking material in place of wood fibers. Moreover, we aim to provide paper that has a unique feel that is different from Japanese paper and Western paper, and that can accommodate different tastes. In other words, the aim is to provide paper with a unique feel by leaving the pigment behind without completely bleaching the apple residue. (Means for Solving the Problems) In order to achieve the above object, the paper in the present invention comprises cellulose residue after squeezing the juice of apple fruit,
and semicellulose as the main material. In addition to cellulose, the above-mentioned fruit residue also contains many intercellular substances such as lignin and xylose that form fruits. Fine mineral clay or talc is added to these residual cellulose liquids as a filler, similar to when wood materials are used as raw materials. The ratio is adjusted depending on the paper to be manufactured. (Function) According to the above means, the residual cellulose after squeezing apple juice acts as wood fiber (pulp),
You can obtain paper that has a unique feel that is different from Japanese paper or Western paper. In other words, since the apple fruit residue cellulose corresponds to pulp, the unique taste of apple fruit appears. (Effects of the Invention) Since the paper according to the present invention is made mainly from cellulose residue after squeezing apple juice, it has a unique feel that is different from Japanese paper or Western paper. In other words, since it is apple fruit residue cellulose, it can express the atmosphere and texture of apple fruit, and by separately adding aromatic substances extracted from the fruit residue as a raw material, it is possible to create a highly palatable fruit scented product. We can provide paper. Furthermore, since the main material of the paper stock is cellulose, which is the residue after squeezing fruit juice, the paper stock is generated during the squeezing process to obtain fruit juice without going through any special process, and requires only a small amount of processing. It can be made into a usable form and can be manufactured at low cost. In addition, cellulose residue from apple fruits, which is the main material for paper stock, has traditionally been buried or incinerated as industrial waste, but as the amount of cellulose has increased in recent years, the cost of processing has become enormous, and incineration is becoming more and more expensive. The resulting soot and smoke has become a new source of pollution. The present invention has the great advantage of being able to simultaneously solve the important problems of disposal and depletion of wood fiber resources by effectively utilizing the industrial waste. (Example) Examples of the present invention will be described below. First, squeeze the apple juice, crush the squeezed dregs, add water three times the amount of the squeezed dregs, put it in a mixer for 5 minutes, then squeeze it and take out the residue. After washing with acetone three times, it is filtered to separate a filtrate and a residue, and the residue is dried. Next, the dried residue was decomposed and bleached, but this time, the amount of sodium hydroxide (NaOH) was changed to four types as shown below, and alkaline decomposition was performed. Sample (residue): 5g Sodium hydroxide: Og, 5g (NaOH) 10g 20g Water: 200ml Four types were prepared with different amounts of sodium hydroxide, each was stirred for 1 hour, and placed in constant temperature water at 80℃ for 4 hours. After that, it was taken out and cooled for 1 day. Next, add hydrochloric acid to each solution to bring it close to neutrality, and after filtration, add 5 ml of sodium hypochlorite to the residue,
Leave it in constant temperature water at ℃ for 1 hour and 30 minutes. At this stage the sample was almost bleached. Furthermore, add sodium hypochlorite to the sample again.
5 ml was added and placed in constant temperature water at 60°C for 2 hours, and sodium hydroxide was further added to the sample. At this stage the sample was slightly bleached. Thereafter, the pH of the sample is adjusted to 7, and the sample is suction-filtered using a Buchner funnel and glass filter paper to obtain residual cellulose that becomes paper stock. The colors of the four types of filtrate and residue were as follows.

[Table] By changing the degree of the initial crushing process, it is possible to create a variety of paper stock colors and mixtures of pericarp. The residual cellulose (paper stock) obtained as described above is stirred with water to a predetermined concentration (for example, a thin concentration of around 0.1%), and then mixed with a hand-made tool known today or with a constant Paper is completed by making paper using a Fourdrinier paper machine, cylinder paper machine, etc., which are operated at a speed of . The paper obtained as described above has a unique feel unlike Japanese paper or Western paper, and can be used as wrapping paper and packaging materials, as well as high value-added paper products such as notebooks, stationery, and postcards. .

Claims (1)

[Claims] 1 Cellulose residue after squeezing apple juice,
and paper made using semicellulose as the main material.