JPH0482999A - Patterned paper - Google Patents

Abstract

PURPOSE:To obtain patterned paper containing a ground extract residue of roasted coffee beans, etc., in paper, having natural color tone colored to pale brown or brown and excellent appearance and handle and useful in industry for decoration, package, printing, etc. CONSTITUTION:The aimed patterned paper containing an extract residue of roasted coffee beans ground into <=3mm average grain size and/or roasted coffee beans ground into <=3mm average grain size in paper, preferably of 0.5-20wt.%.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to paper with a novel pattern that is excellent in appearance and texture. , can be used in industries such as printing and the paper industry.

[Conventional Techniques] Traditionally, there have been many methods for producing patterned paper, including dyeing, various types of embossment, paper-making with special shapes or colored substances, and methods that apply special paper-making techniques. Are known. As for paper that has been incorporated into paper, patterned paper in which various dyed cellulose fibers are mixed with bleached pulp, or patterned paper in which screen residue from the pulping process is mixed with bleached pulp or unbleached pulp is known. 53-45
(See Publication No. 412). Also, patterned paper containing crushed cottonseed husks (see Japanese Patent Application Laid-Open No. 125099/1983)
, Fancy Paper (JP-A-64-1999) in which crushed pieces of wood or rice husk are dispersed in paper or paperboard.
6+597), patterned paper containing pulverized grass seed husks or bran (see Japanese Patent Application Laid-open No. 1-1-1)
No. 62899) is known.

The inventor of this application focused on unused plant resources in the papermaking industry, and as a result of intensive research on their application to patterned paper, roasted coffee beans, which had previously been discarded or used only as fuel for boilers, were discovered. We came up with the idea of effectively using the extraction residue.

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

[Problems to be Solved by the Invention] The purpose of the present invention is to utilize roasted coffee bean extraction residue, which has not been used in the past, to create a paper for decoration and packaging that is different from conventionally known patterned paper. Or to provide new patterned paper for printing.

[Means for Solving the Problems] The present invention provides extraction residues of roasted coffee beans that have been ground to an average particle size of 3 mm or less and/or roasted coffee beans that have been ground to an average particle size of 3 mm or less in paper. It is a patterned paper characterized by containing.

Components of the present invention will be explained below.

(Roasted coffee bean extraction residue, roasted coffee beans) Coffee is a recreational beverage that is drunk all over the world.It has a unique aroma and pleasant bitterness, and contains caffeine, which has a stimulating effect on the nervous system. have.

There are several species of raw material plants for coffee, and Coffee arabica L accounts for 90% of the world's production. Other members of the same genus include Congo Coffee Tsuki C,
r.

Busta Linden, Liberian coffee tree, etc. are cultivated. These coffee berries are produced using the dry method (
Coffee beans (green beans) are those prepared by drying the fruit and removing the pulp and outer skin, or by using the wet method (soaking the fruit in water and fermenting it to remove the pulp, then drying and removing the outer skin). , and roasts the green beans.

The space between the shells is roasted at a maximum temperature of 200-215°C for about 15 minutes. Roasted coffee beans are ground by various means to facilitate extraction.

What is used in the present invention is ground roasted coffee bean extraction residue or ground roasted coffee beans before extraction (hereinafter these may be referred to as ground coffee beans),
Used alone or in combination. It is preferable to use particles pulverized to a particle size of 3 mm or less. However, if particles with a particle size of 0.1 mm or less are used, it is difficult to achieve the textured pattern that is a feature of the present invention, and if particles with a particle size of more than 3 mm are used, the pattern obtained is difficult to obtain. When paper is used as printing paper, crushed materials are caught in the blanket during printing and become an obstacle to printing.

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

The content of ground coffee beans in the patterned paper is o, i~
The amount is 50% by weight, preferably 0.5 to 20% by weight, and is appropriately selected depending on the purpose of the paper. In addition, the roasted coffee bean extraction residue is bleached with sodium hypochlorite, etc.
Or it may be semi-bleached.

(Means for grinding coffee beans) Roasted coffee beans are generally ground in a coffee mill, but in some cases, they are ground in a hammer mill, ball mill,
It may be ground with a sand mill or the like. Further, when roasted coffee beans are beaten by a refiner or a beater, the valves may be crushed at the same time as the valves.

Further, the roasted coffee bean extraction residue itself may be further ground by a refiner or a beater, or it may be mixed with a bulb and ground simultaneously with the bulb by a refiner or a beater.

(Blending valve) As a valve to be mixed with ground coffee beans, there is a wood valve that can be used for negative passage in paper manufacturing, and a deinking valve (DIR).
In addition, any non-wood fiber bulb such as linter pulp, hemp, bagasse, kenaf, esparto grass, bamboo, straw, etc. may be used, as well as synthetic bulbs such as polyethylene, polypropylene, rayon, polyvinyl alcohol fiber, polyester, polyacrylonitrile, etc. Synthetic fibers, rock wool, inorganic fibers such as glass fibers, etc. can also be used as appropriate.

It is preferable to use linter pulp when producing patterned paper that is flexible and has a high bulk, and when producing patterned paper with a stiff feel, it is preferable to use wood valve as the main ingredient, and mix it as appropriate depending on the purpose. is preferable. Further, the bulb may be either an unbleached bulb or a bleached bulb, or a mixture thereof, and a bleached bulb may be dyed.

(Additives) The patterned paper of the present invention can contain various additives for paper. For example, internal sizing agents include acidic sizing agents,
Any neutral sizing agent can be used.

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

Furthermore, it is preferable to apply surface size using a size press or the like, since patterned paper with good printability can be obtained.

In addition, inorganic pigments such as clay, talc, calcium carbonate, silica, magnesium carbonate, aluminum hydroxide, barium sulfate, titanium oxide, and kaolin, organic fillers such as urea-formalin resin, and styrene resin may be added, and dyes and pigments may also be added. By adding , colored patterned paper is obtained. In addition, when producing colored patterned paper, salts of humic acids proposed in JP-A-58-78596 are used in combination with dyes and pigments, and water-soluble polyvalent metal salts of divalent or higher valence are used. is preferable.

[Examples] The present invention will be specifically explained below with reference to Examples, but it goes without saying that the present invention is not limited only to these Examples. Note that parts and percentages are based on weight unless otherwise specified. Example 1 100 parts of N and L mixed bleached wood valve beaten to 350mI CS F (B to P) were heated with 5.0 parts of roasted coffee bean extract residue crushed to an average particle size of 3 mm or less to obtain rosin size. Agent (Sizevine E
, manufactured by Arayo Kagaku Co., Ltd.) at 0.3%, starch-based paper strength enhancer (
2.0% of cysarin (manufactured by Matsutani Chemical Co., Ltd.) and 0.7% of sulfuric acid were added. 7% of oxidized starch as size liquid
Surface sizing was performed using a concentration of 10 m2.
03 m2 of patterned paper was made. The paper produced has a rich texture with many crushed roasted coffee bean extraction residues dotted throughout the paper, and the surface is even and has no unevenness, and the extraction residue is integrated into the paper. The paper is made using the same method, so it will not peel off.

When this patterned paper was offset printed using a Roland printing machine, the extraction residue was not removed by the blanket.
Moreover, the finish was beautiful and the printability was good.

Example 2 In Example 1, instead of 5.0 parts of roasted coffee bean extraction residue pulverized to an average particle size of 3 mm or less, 3 ml of average particle size was used.
1] Rice was grown under the same conditions as in Example 1, except that 0.5 parts of roasted coffee beans crushed below and 4.5 parts of roasted coffee bean extraction residue crushed to an average particle size of 3 mm or less were mixed. Patterned paper with a basis weight of 100 g/m2 was made.

The paper produced has a rich texture with many brown crushed coffee beans dotted throughout the paper, and the bulbs are slightly colored in a coffee color, making it a patterned paper with a coffee scent. be. As in Example 1, the printability was good.

Example 3 3.0 pieces of roasted coffee bean extract residue crushed to an average particle size of 3 mm or less were heated to 100 mL of beaten N and L mixed bleached wood pulp in 350 ml CS F, and Scarlet 4BS (
3.0% red direct dye (manufactured by Mitsubishi Chemical Industries, Ltd.), 0.3% lysine sizing agent (Sizepine E), 2.0% starch-based paper strength enhancer (Saisalin), recycled sodium himate. Salt (CHA-02, manufactured by Chill Night Co., Ltd.) was added at a ratio of 0.3% to the dye, and sulfuric acid was added at a ratio of 0.7%. Surface sizing was performed using 7% oxidized starch as a sizing liquid, and patterned printing paper with a basis weight of 100 g/m2 was made. The paper produced was a patterned paper with a richly colored and unique texture, in which both the crushed roasted coffee bean extraction residue and the pulp were dyed, and the somewhat darkly colored extraction residue formed a pattern. When this patterned paper was tested using a printing machine in the same manner as in Example 1, it was found to have good printability. The patterned papers obtained in Examples 1 to 3 above 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 were previously unused as a raw material for paper making, can now be used as a raw material for patterned paper.
It is now possible to provide calm patterned paper with natural tones colored light brown or brown, and it is possible to provide decorations using paper.
It has become possible to provide new materials for a wide range of fields such as packaging and printing.

Claims (1)

[Claims] A patterned paper containing roasted coffee bean extraction residue pulverized to an average particle size of 3 mm or less and/or roasted coffee beans pulverized to an average particle size of 3 mm or less.