JP3215821B2 - Washi molded article and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Japanese paper molded article in which natural materials and the like are enclosed in handmade Japanese paper and transparency is imparted so that the natural materials and the like can be seen through the handmade Japanese paper. The washi molded product according to the present invention is particularly suitable for a lamp shade, wall hanging, folding screen, or the like.

[0002]

2. Description of the Related Art Unlike Western paper, Japanese paper leaves the texture of bast fibers such as mulberry and mitsumata, which are the raw materials of Japanese paper, on the entire paper. It is not only used for paper products such as stationery and envelopes, but also used as molded products such as lamp shades and wall hangings to take advantage of the unique characteristics of the Japanese paper. Was.

[0003] In order to further enhance the design value of the molded product, such a molded product of Japanese paper is sometimes decorated. In particular, natural materials such as flowers and the like are used in Japanese paper because they are easily compatible with the natural feeling of Japanese paper. Was sometimes added to the decoration. Examples of such a molded product obtained by adding a natural material to Japanese paper include a wall hanging and a lamp shade made by sticking a natural material such as a tree leaf on the surface of the finished Japanese paper. Further, Japanese Unexamined Patent Publication No. 9-314705 discloses a lamp shade in which an unsaturated polyester resin is applied to a pressed flower arranged on the surface of Japanese paper, or the pressed flower is embedded in the resin applied to the Japanese paper so that the pressed flower can be seen through. And the lamp shade are disclosed.

[0004]

However, in the case of a wall hanging or a lamp shade in which a natural object such as a tree leaf is stuck on the surface of the made washi paper, a part of the leaf tree may be masked by the washi paper. In some cases, the design value of the molded product was reduced. Moreover, the added natural object may decay with time, and the freshness of the natural object may be lost. Furthermore, natural object that is added just for those sticking the natural object on the paper surface had a drawback that is constrained to what plane. On the other hand, the invention described in Japanese Patent Application Laid-Open No. 9-314705 is capable of avoiding the problem of the molded article that the pressed flower added is masked by the Japanese paper because transparency is imparted to the molded article. Because it is not a fresh flower but a pressed flower, it is difficult for a person who views such a lampshade to feel as fresh as a fresh natural object such as a fresh flower. In addition, pressed flowers embedded in the resin applied to Japanese paper as well as pressed flowers placed on the surface of Japanese paper are not enclosed in the Japanese paper itself, so they must be flat due to space constraints. However, it was difficult to embed three-dimensional natural objects, and the added pressed flowers could not be seen as if they appeared in Japanese paper. As described above, various types of Japanese paper molded products to which natural objects are decoratively added have been conventionally provided, but all of them add natural objects to the surface of the Japanese paper, and the natural natural materials such as leaves and flowers are included in the Japanese paper itself. There was no Japanese paper molded product enclosing the same.

Therefore, the present invention has been made in view of the above circumstances, and its object is to enclose raw natural materials such as leaves and fresh flowers and three-dimensional natural materials such as tree branches in handmade Japanese paper. In addition, the present invention provides a Japanese paper molded article which is capable of being visually perceived in handmade Japanese paper without any change in the form of the enclosed natural material before and after the insertion and is extremely excellent in designability in combination with the texture of the Japanese paper, and a method for producing the same. It is in.

[0006]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems and have arrived at the present invention. Wood pulp in a volume ratio of 1.0: 1.0 to 2.0
Together to <br/> encapsulated by combing reservoir natural objects or the like, in a washi made by blending, impregnated with a transparent resin to the handmade paper characterized by comprising by molding and solidification by.

[0007] According to this molded Japanese paper, natural materials and the like are enclosed in the handmade Japanese paper by sashimi, and natural natural materials such as leaves and flowers and three-dimensional natural materials such as tree branches can be freely enclosed. . In addition, by impregnating the handmade Japanese paper with the transparent resin, the form such as the color of the enclosed natural object can be seen through the handmade Japanese paper without changing continuously before and after the insertion, and the handmade Japanese paper can be used. Before consolidation, it can be easily formed into a desired shape, and rigidity can be imparted to the consolidated Washi molded article. Here, the transparent resin refers to a synthetic resin having a high total light transmittance, and examples thereof include an unsaturated polyester resin and an acrylic resin. In addition,
Unsaturated polyester resins are most preferred in that they can impart excellent uniform transparency to the entire molded article.

[0008] A method for producing a washi molded article according to the second aspect is characterized by comprising the following steps. (1) The beaten bast fiber and wood pulp in a volume ratio
1.0: A process of mixing hand-made Japanese paper in a ratio of 1.0 to 2.0 according to a conventional method. (2) A process of placing natural objects on handmade Japanese paper. (3) A step of laminating a squeezing solution on a placed natural object or the like by evaporating and sealing. (4) Place the moisture contained in handmade Japanese paper, which is filled with natural materials etc., on a net made of a flexible material.
And removing by suction . (5) A step of drying handmade Japanese paper from which water has been removed. (6) A step of impregnating the whole of the dried handmade Japanese paper with the transparent resin. (7) A step of drying after impregnating the transparent resin. (8) A step of forming into a desired shape after drying and solidifying by leaving.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a rectangular handmade Japanese paper 1 in which green leaves 2 are enclosed, and FIG. 2 shows a handmade Japanese paper according to the present invention, which is produced by molding the rectangular handmade Japanese paper 1 of FIG. 1 shows a lamp shade 3 in which green leaves 2 are enclosed in Japanese paper 1. FIG. 3 is a partially enlarged cross-sectional view of a place where the green leaves 2 of the lamp shade 3 of FIG. 2 are sealed.

[0010] Mitsumata is used for the bast fiber, which is a raw material of the handmade Japanese paper 1 of this molded Japanese paper, and hardwood pulp is used for the wood pulp.

[0011] First, the handmade Japanese paper 1 on which the green leaves 2 are placed is made according to a conventional method. In other words, beating (paper tapping)
The wood pulp beaten with the mitsumata and beater is put into a craft boat with water added with mucus such as troloioi and Norritsugi as a neri to make a squeezing liquid, and the inside of the craft boat is squeezed with a drawing frame. Hand-made Japanese paper 1 of desired thickness is made while repeatedly making by sinking. The bast fiber mitsumata is boiled in black scale prior to beating and treated to remove lye. In the present embodiment, the mixing ratio of Mitsumata, which is a raw material of handmade Japanese paper 1, and wood pulp is 1.
0: 1.5. The mixing ratio of the bast fiber and the wood pulp is preferably in the range of 1.0: 1.0 to 2.0, and the ratio of 1.0: 1.5 is more preferable as in the present embodiment. It is. If the ratio of the wood pulp is less than 1.0 with respect to the bast fiber, the bast fiber having a small bond between fibers can be given sufficient denseness and homogeneity by the dense wood pulp of the fiber. The reason is that if the ratio of the wood pulp is more than 2.0, the texture of the Japanese paper becomes thin.

On the handmade Japanese paper 1 thus made,
The green leaf 2 is placed, and the same liquid as above is laminated on the green leaf 2 in a draft boat. In this case, the tame-saki is different from the sinking-making method, in which the drawing frame is repeatedly immersed in the drawing liquid back and forth and left and right, and the drawing liquid put in a vessel like a scoop is repeatedly poured from above. This is a method of laminating a ladle. That is, a desired raw natural product or a three-dimensional natural product can be enclosed in the handmade Japanese paper 1 without moving from the initial position of the placement. In addition, handmade Japanese paper 1
In order to fix the green leaf 2 placed on the green leaf 2 more securely, a thin plant fiber such as hemp fiber may be wrapped around an arbitrary portion of the green leaf 2 to serve as a stopper. In this way, the rectangular plate-shaped handmade Japanese paper 1 shown in FIG. 1 in which the green leaves 2 are enclosed can be obtained.

Next, the handmade Japanese paper 1 shown in FIG. 1 in which the green leaves 2 are enclosed contains a large amount of water, and must be removed. It is preferable to remove the water by placing the handmade Japanese paper 1 on a stainless steel net and sucking the water with a suction pump. Unlike conventional bamboo screens, the stainless steel net bends in a substantially U-shape with the handmade Japanese paper 1 placed thereon, so that moisture easily collects at the bottom of the bend and is efficiently absorbed by sucking moisture from the bottom. In addition, water can be sufficiently removed. This facilitates the production of a large-sized Washi molded article, which was conventionally difficult, and also allows the green leaf 2 to be reliably fixed in the handmade Washi 1. Further, since the water content can be sufficiently removed, it is possible to prevent a decrease in transparency and rigidity of a molded Japanese paper due to the white turbidity of the handmade Japanese paper 1 when impregnating the transparent Japanese paper 1 with a transparent resin. The material is not limited to the stainless steel net, but may be a plastic net or the like as long as the material has flexibility.

Next, the handmade Japanese paper 1 from which water has been sufficiently removed is dried. Drying is preferably performed by sun drying.
This is because according to the sun drying, not only the handmade Japanese paper 1 but also the moisture of the enclosed green leaf 2 can be gradually removed, so that a change in the color and shape of the green leaf 2 can be avoided.
In addition, it is preferable to apply the mucilage of trolley mallow or Norryugi to the entire handmade Japanese paper 1 prior to drying. This is because the fixing property of the green leaves 2 to the handmade Japanese paper 1 can be enhanced, and the paper quality can be further improved.

Further, the dried handmade Japanese paper 1 in which the green leaves 2 are enclosed is impregnated with an unsaturated polyester resin as a transparent resin to impart transparency. The impregnating method may be any of coating, dipping or spraying with a brush, but it is necessary to impregnate the entire handmade Japanese paper 1 thoroughly and evenly. A hardening agent is added in advance to the unsaturated polyester resin to be impregnated. As the hardening agent, putty for Roski woodworking is suitable, and this is mixed at a rate of 2% by volume with respect to the unsaturated polyester resin, and then mixed with a hand mixer. After sufficient stirring, the handmade Japanese paper 1 is impregnated.

Next, it is necessary to dry the handmade Japanese paper 1 impregnated with the transparent resin. In the present embodiment, 1
Dry at 5 ° C. Drying is performed at room temperature of 15 ° C or more for 7 minutes.
It is preferably performed for a period of time to 9 hours. If the drying temperature is lower than 15 ° C., the turbidity phenomenon easily occurs, and the transparency and rigidity of the molded product are liable to decrease. After drying, the handmade Japanese paper 1 in the form of a rectangular plate is easily formed because it has plasticity, and is formed into a substantially frustoconical cylinder by overlapping the upper part in the longitudinal direction. Then, if left as it is for 2 to 3 days after molding, the molded product is solidified and the lamp shade 3 shown in FIG. 2 can be obtained.

The maximum bending stress (JI) of the molded Japanese paper manufactured by the same method as in this embodiment is described.
SK7055) and opacity (ISO2471)
Compliant). Example 1 was obtained by impregnating a handmade Japanese paper with an unsaturated polyester resin at a drying temperature of 15 ° C., and Example 2 was performed at 10 ° C .; It does not impregnate the polyester resin. In addition, all are 300 × 160 ×
3 (mm) rectangular plate. Maximum bending stress: Example 1 (2.91 MPa), Example 2
(1.22 MPa), Comparative Example (0.10 MPa) Opacity: Example 1 (29.3%), Example 2 (43.
0%), Comparative Example (96.1%) From these results, it can be seen that a Japanese paper molded product obtained by impregnating an unsaturated polyester resin into handmade Japanese paper and drying at 15 ° C. is excellent in both transparency and rigidity.

The invention according to the above embodiment has the following features. (1) Since the mixing ratio of bast fiber and wood pulp is 1.0: 1.5 in volume ratio, sufficient denseness and homogeneity can be imparted to the bast fiber. (2) In the step of removing the water content of the handmade Japanese paper 1, the handmade Japanese paper 1 is placed on a stainless steel mesh, and the moisture is sucked and removed from the bottom of the bent portion formed by bending the mesh into a substantially U-shape. Lamp shade (Japanese paper molded product) 3 which can sufficiently remove moisture contained in handmade Japanese paper 1 and prevents a decrease in transparency and a decrease in rigidity due to cloudiness caused by the impregnation of the transparent resin.
Sufficient transparency and rigidity. (3) In the drying process after removing moisture from handmade Japanese paper 1,
By applying the mucilage of trolley mallow or Norway sorghum to the handmade Japanese paper 1 prior to drying, the fixability and paper quality of the green leaf 2 can be improved. (4) The drying process after impregnating the handmade Japanese paper 1 with the transparent resin
Since the heat treatment is performed at 15 ° C., it is possible to prevent a decrease in transparency and a decrease in rigidity of the lamp shade (Japanese paper molded article) 3 due to a clouding phenomenon. (5) The lamp shade 3 produced as described above is entirely white and has the texture of Japanese paper, and the encapsulated green leaves 2 do not continuously lose vivid green before enclosing ( The color does not change even though 5 months have passed since the formation of the molded product.) It can be visually recognized in the handmade Japanese paper 1. In addition, the green leaves 2 having a three-dimensional effect can be visually recognized in the handmade Japanese paper 1. In particular, the illumination of the light source disposed in the lamp shade 3 causes the green leaf 2 to clearly emerge in the Japanese paper, and the lamp shade 3 having a design characteristic that cannot be obtained by the conventional Washi molded article is obtained in combination with the texture of the Japanese paper. be able to.

The present invention may be modified and embodied as described below. (1) As the bast fiber, a traditional Japanese paper material such as mulberry or goose may be used as appropriate. (2) The wood pulp is not limited to hardwood, but may be softwood. (3) Plants such as autumn leaves, fresh flowers, fresh grass, flowered twigs, or animals such as insects may be used as natural materials and the like enclosed in handmade Japanese paper. Further, glass or metal which is an unnatural substance may be used. (4) Handmade Japanese paper is not only made in a rectangular plate shape as in the above embodiment, but also can be made into various shapes in advance according to the desired shape of the formed Japanese paper. (5) Washi molded products can be produced as various products such as wall hangings, folding screens, and Japanese stained glass, in addition to lamp shades.

[0020]

Since the present invention is configured as described above in detail, it has the following effects. In other words, according to the first and second aspects of the present invention, it is possible to enclose raw natural materials such as leaves and fresh flowers and three-dimensional natural materials such as tree branches in handmade Japanese paper, and to see through them. As a result, it is possible to obtain a Washi molded article having extremely excellent design properties in combination with the texture of Washi paper. In addition, since the form of the color of natural objects enclosed in handmade Japanese paper does not change continuously before and after enclosing, you can feel the freshness of the natural objects such as leaves and trees that are always enclosed, and it has excellent design A molded Japanese paper is obtained. Furthermore, since the molding is easy, a desired Washi molded article can be easily produced, and the Washi molded article is solidified to provide rigidity, so that a durable Washi molded article can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of a rectangular plate-shaped handmade Japanese paper in which green leaves are enclosed.

FIG. 2 is a perspective view showing a lamp shade which is a Japanese paper molded product of the present invention.

FIG. 3 is a partially enlarged cross-sectional view of a place where green leaves of the lamp shade of FIG. 2 are sealed;

[Explanation of symbols]

 1 Handmade washi paper 2 Green leaves (natural things, etc.) 3 Lamp shade (Washi paper molding)

Continuation of the front page (51) Int.Cl. ⁷ identification code FI // F21V 1/18 F21V 1/18 F21W 131: 00 F21W 131: 00 (58) Investigated field (Int.Cl. ⁷ , DB name) D21H 11/00-27/42

Claims (2)

(57) [Claims] 1. A bast fiber and a wood pulp having a volume ratio of 1.
0: 1.0 to 2.0 causes encapsulated by plow reservoir natural objects or the like, in a washi comprising in proportions of, by being formed by molding and consolidated by impregnating a transparent resin to the washi Characteristic washi paper products. 2. The method for producing a molded Japanese paper according to claim 1, comprising the following steps. (1) The beaten bast fiber and wood pulp in a volume ratio
1.0: A process of mixing hand-made Japanese paper in a ratio of 1.0 to 2.0 according to a conventional method. (2) A process of placing natural objects on handmade Japanese paper. (3) A step of laminating a squeezing solution on a placed natural object or the like by evaporating and sealing. (4) Place the moisture contained in handmade Japanese paper, which is filled with natural materials etc., on a net made of a flexible material.
And removing by suction . (5) A step of drying handmade Japanese paper from which water has been removed. (6) A step of impregnating the whole of the dried handmade Japanese paper with the transparent resin. (7) A step of drying after impregnating the transparent resin. (8) A step of forming into a desired shape after drying and solidifying by leaving.