JP2825621B2 - Pattern paper - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to paper having a novel pattern excellent in appearance and texture, and more particularly, the present invention relates to decoration and packaging using patterned paper , Printing and the like and the papermaking industry.

[Prior Art] Conventionally, as a method for producing a pattern paper, a method by dyeing,
Many methods are known, such as a method using various types of molding, a method for extracting a specially shaped article or a colored substance, and a method using a special papermaking technique. As paper making paper, there is known a pattern paper in which various dyed cellulose fibers are blended into bleached pulp, or a pattern paper in which screen waste from the pulping process is mixed with bleached pulp or unbleached pulp (Japanese Patent Publication No. 53−4541
No. 2). Also, patterned paper containing ground cotton seed hulls in paper (see Japanese Patent Application Laid-Open No. 62-125099), fancy paper in which crushed strips of wood or rice hulls are dispersed in paper or paperboard ( Japanese Unexamined Patent Publication (Kokai) No. 64-61597), and a patterned paper containing ground pulverized seed husks or bran in paper (JP-A-1-162899) are known.

The present inventor focused on unused plant resources in the papermaking industry,
As a result of diligent research on its application to patterned paper, the authors came up with the idea of effectively utilizing roasted coffee bean extract residues that were previously discarded or used only as fuel for boilers.

According to statistical data, coffee consumed in Japan in 1990 last year was 304,440 tons in terms of green beans, and the unused plant resources from the coffee production industry were large.

[Problem to be Solved by the Invention] An object of the present invention is to use a roasted coffee bean extract residue that has not been used in the past for decoration, wrapping, or other purposes different from conventionally known patterned paper. It is to provide a new pattern paper for printing.

[Means for Solving the Problems] The present invention provides roasted coffee beans extracted with a mean particle size of 3 mm or less and / or roasted coffee beans with a mean size of 3 mm or less in paper. It is a pattern paper characterized by containing.

 The components of the present invention will be described below.

(Roasted coffee bean extract residue, roasted coffee beans) Coffee is one of the favorite beverages and is consumed around the world. It has a unique aroma and pleasant bitterness, and contains caffeine to excite nerves. With. There are several types of coffee plants, such as the Arabian coffee tree Coffea arabi.
ca L. accounts for 90% of global production. In addition, Congo coffee tree C.robusta Linden and Liberia coffee tree are also cultivated. These coffee berries were prepared by the dry method (drying the fruit and removing the pulp and hulls) or the wet method (drying the berries to remove the pulp by fermenting in water and drying to remove the hulls). The thing is coffee beans (green beans), and the green beans are roasted. Typically up to 20
The roasted coffee beans, which are roasted at 0 to 215 ° C. for about 15 minutes, are ground by various means in order to facilitate extraction.

What is used in the present invention is a pulverized roasted coffee bean extract residue or a pulverized roasted coffee bean before extraction (hereinafter, these may be referred to as pulverized coffee beans). Is done. It is preferable to use those ground to a particle size of 3 mm or less. However, when a particle size of 0.1 mm or less is used, it is difficult to develop a textured pattern which is a feature of the present invention, and the particle size is small.
When using a pattern paper exceeding 3 mm, when using the obtained patterned paper as printing paper, the crushed material is taken on a blanket at the time of printing, which hinders printing.

In order to exhibit the effects of the present invention, it is preferable to use ground coffee beans having a particle size of 0.1 mm to 1.5 mm from a practical viewpoint.

The content of ground coffee beans in the patterned paper is 0.1-5
0% by weight, preferably 0.5 to 20% by weight, is appropriately selected depending on the use of the paper or the purpose of use. The roasted coffee bean extract residue may be bleached or partially bleached with sodium hypochlorite or the like.

(Means for crushing coffee beans) Roasted coffee beans are generally crushed by a coffee mill, but may be crushed by a hammer mill, a ball mill, a sand mill or the like depending on circumstances. When roasted coffee beans are beaten with a refiner or a beater, the roasted coffee beans may be ground together with the pulp.

Further, the roasted coffee bean extract residue itself may be further pulverized by itself in a refiner or a beater, or may be mixed with pulp and pulverized simultaneously with the pulp in a refiner or a beater.

(Blended pulp) Wood pulp and deinked pulp (DIP) that can be used for papermaking as pulp to be blended with ground coffee beans
Besides, non-wood fiber pulp such as linter pulp, hemp, bagasse, kenaf, esparto grass, bamboo, straw, etc. may be used. Inorganic fibers such as synthetic fibers, rock wool, and glass fibers can also be used as appropriate.
It is preferable to use linter pulp in the case of producing a soft and damp pattern paper, and it is preferable to mainly use wood pulp in the case of producing a hard-feeling pattern paper. Is preferred. The pulp may be either unbleached pulp or bleached pulp, a mixture thereof, or bleached pulp may be dyed.

(Additives) The pattern paper of the present invention can contain various additives for paper. For example, either an acidic sizing agent or a neutral sizing agent can be used as the internal sizing agent.

In order to prevent the ground coffee beans from falling off, various synthetic resins, paper strength enhancers such as starch and modified starch can be used.

Further, it is preferable to apply a surface size by a size press or the like, since a pattern paper having good printability can be obtained.

Further, inorganic fillers such as clay, talc, calcium carbonate, silica, magnesium carbonate, aluminum hydroxide, barium sulfate, titanium oxide, and kaolin, and organic fillers such as urea-formalin resin and styrene resin may be added. Is added to obtain a colored patterned paper. In the case of producing colored patterned paper, humic acid salts proposed in JP-A-58-76596 are used in combination with dyes and pigments.
It is preferable to use a water-soluble polyvalent metal salt having a valency or higher.

[Examples] Hereinafter, the present invention will be described specifically with reference to Examples.
It goes without saying that the present invention is not limited to only these examples. Parts and percentages are by weight unless otherwise specified. Example 1 N beaten into 350 ml CSF
L mixed bleached wood pulp (BKP) 100 parts, average particle size 3m
The rosin sizing agent (Size Pine E, manufactured by Arakawa Chemical Co.)
3%, 2.0% of a starch-based paper strength enhancer (Sizarin, manufactured by Matsutani Chemical Co., Ltd.) and 0.7% of a sulfate band were added. Surface sizing was carried out using a 7% concentration of oxidized starch as a size liquid, and a pattern paper of 100 g / m ^{2 in} rice tsubo was formed. The paper produced has a rich texture with a large number of ground roasted coffee bean extract residues scattered throughout the paper, and has an even and uniform surface state.The extract residue is also integrated into the paper. The paper has not been peeled off. When the pattern paper was subjected to offset printing by a Roland printing machine, the extraction residue was not removed by a blanket, had a beautiful finish, and had good printability.

Example 2 In Example 1, instead of 5.0 parts of the roasted coffee bean extraction residue ground to an average particle size of 3 mm or less, 0.5 parts of roasted coffee beans ground to an average particle size of 3 mm or less, and an average particle size of 3 mm or less A pattern paper having a rice basis weight of 100 g / m ^{2 was} produced under the same conditions as in Example 1 except that 4.5 parts of the roasted coffee bean extraction residue pulverized was mixed. The paper thus produced is rich in texture with many brown coffee grounds scattered throughout the paper, and the pulp is slightly coffee-colored and is a patterned paper with a coffee scent. The printability was good as in Example 1.

Example 3 100 parts of N, L mixed bleached wood pulp beaten into 350 ml CSF was mixed with 3.0 parts of roasted coffee bean extraction residue pulverized to an average particle size of 3 mm or less, and then Scarlet 4BS (red direct dye, Mitsubishi Chemical Corporation) Made) 3.0%, rosin sizing agent (Size Pine E) 0.3%, starch-based paper strength enhancer (Sizerin)
2.0%, a sodium salt of regenerated humic acid (CHA-02, manufactured by Ternaine) was added to the dye at a ratio of 0.3%, and a sulfate band was added at 0.7%. Surface sizing was performed using a oxidized starch having a concentration of 7% as a sizing liquid, and a patterned printing paper having a rice basis weight of 100 g / m ² was prepared. The paper thus formed was a pattern paper having both a crushed roasted coffee bean extraction residue and pulp dyed and a slightly darker colored extraction residue as a pattern, and having a rich color and a unique texture. When this patterned paper was tested on a printing machine in the same manner as in Example 1, the printability was good. The pattern papers obtained in Examples 1 to 3 have sufficient paper strength such as tensile strength and surface strength, and are highly practical.

[Effects of the Invention] According to the present invention, ground coffee beans which have not been used as a raw material for papermaking can now be used as a raw material for pattern paper, and a light brown or brown colored natural paper having a natural color tone. And new materials can be provided in a wide range of fields such as decoration, packaging, and printing using paper.

Claims (1)

(57) [Claims] 1. A paper comprising a roasted coffee bean extract residue having an average particle size of 3 mm or less and / or a roasted coffee bean having a mean particle size of 3 mm or less.