JP2007031924A - Method for producing molded article including paper sludge and / or paper defibrated article, molded article, bedding using the same, and air purification filter using the same - Google Patents

Abstract

[PROBLEMS] To produce a molded article containing paper sludge and / or paper defibrated material, having a moderate hardness and easy processing, and not requiring water addition during kneading. No dehydration process is required, it can be molded into any shape, the useful materials and functions of the mixture are not substantially impaired, and in addition, when the molded product is used, it is costly Thus, a method for producing a molded body that does not require an excessive burden on the natural environment is obtained.
A method for producing a molded body comprising the following steps. (A) A step of kneading the paper sludge and / or the paper defibrated material 3 and the starch paste-containing material 2 to obtain the adhesive medium 4. (B) A step of kneading the adhesive medium 4 with one or more substances selected from the group consisting of wood powder, pulverized coal, paper defibrated material, and incinerated ash to obtain a molding base 6. (C) A step of forming the forming base 6 and then drying to obtain a formed body 7.
[Selection] Figure 1

Description

  The present invention relates to a method for producing a molded body that can be used as building materials, furniture, furniture, daily necessities, various industrial materials, and the molded body, and in particular, is papermaking sludge or recovered resources that are papermaking industrial waste. The present invention relates to a method for producing a molded body capable of effectively reusing a paper defibrated material and the molded body. In addition, the present invention relates to bedding and the like using the molded body and an air purification filter.

  Papermaking sludge is composed of organic substances such as fine fibers that have leaked from the net in the papermaking process, and inorganic substances such as kaolin, talc, calcium carbonate, and titanium oxide added as pigments and fillers. The ratio of organic to inorganic is approximately 6: 4, but varies depending on the production item. Papermaking sludge solidifies when dried. And even if placed in water for a few days, it remains soft and not hard.

  Because it is difficult to reuse due to such a configuration and characteristics, many of them are treated as waste soil for landfill. Some of them are incinerated, but they contain inorganic substances, and because they have a lot of moisture, not only a lot of energy is required but also a lot of incineration ash is generated. The processing of papermaking sludge not only requires great costs, but also places a heavy burden on the environment.

  Paper defibrated material is mainly defibrated waste paper collected from business establishments and households and is usually used as a papermaking raw material. Paper defibrated material has the same composition and properties as paper sludge.

  Since saw sawdust of wood is generated in a considerable amount at the sawmill, some of it is used as other agricultural materials that are used as fuel, but most are treated as waste.

  Incineration ash is generated when incineration of ordinary products, so the amount of incineration increases when the amount of incineration increases. In particular, it is discharged at garbage incinerators and power plants, and its processing requires enormous costs. In recent years, from the viewpoint of environmental protection, the reuse of incineration ash has become a major issue, and some of it is mixed and used in concrete, etc., but it is estimated that it is a minor amount of the emission amount, and in the current situation, it is economically suitable treatment No way has been found.

  Considering charcoal from the viewpoint of the global environment, it is an environmentally friendly substance in that carbon atoms are not emitted as carbon dioxide but remain in the substance. On the other hand, the incidence of new diseases such as atopy, hay fever and sick house disease increases, and the far-infrared effect, negative ion effect and substance adsorption effect of charcoal are effective in preventing and reducing these diseases. In order to use charcoal as a home building material or daily necessities and to utilize the preventive mitigation effect, it is desirable to use charcoal as a molded body.

  Conventionally, a molded body obtained by molding and drying papermaking sludge alone has been proposed (see, for example, Patent Document 1 and Non-Patent Document 1). Further, a molded body obtained by molding and drying a mixture of paper sludge and charcoal has been proposed (for example, see Non-Patent Document 1). Further, there has been proposed a molded article obtained by mixing paper sludge, incinerated ash, starch as a binder, or vinyl acetate, and molding and drying the mixture (for example, see Patent Document 2).

On the other hand, as a filler such as a pillow, a filler formed by mixing paper fibers dispersed in water and a granular adsorbent that is charcoal into a spherical shape and drying to form a spherical molded body is known (for example, (See Patent Document 3).
In addition, as an air cleaning filter containing charcoal, there is known an air cleaning filter in which a base fabric layer that is a specific nonwoven fabric is used, and the base fabric layer holds granular carbon particles dispersed in the thickness direction inside. (See, for example, Patent Document 4). Furthermore, a filter in which activated carbon is filled in a space portion of a double cylindrical container is known (see, for example, Patent Document 5).

JP 2000-303392 A Paragraph 0071 and others JP 2002-180592 A JP 2002-142945 A JP 2002-248309 A JP 2004-321935 A Development of functional building materials made from recycled paper sludge etc. Miyazaki Prefectural Industrial Technology Center / Miyazaki Prefectural Food Development Center Research Report 2001 No. 46 p17-20

  In a molded body in which papermaking sludge is molded and dried independently, it is not easy to make the thickness uniform during molding. Similarly, it is more difficult to form into an arbitrary shape. Further, since the molded body is too hard, it is difficult to process a hole such as a nail hole, and use as a building material or the like is limited.

  In a molded product obtained by mixing papermaking sludge and pulverized coal and molding and drying, the above-mentioned difficulty of the molded product is improved. However, in the manufacturing process, a large amount of water is conventionally used in order to defibrate the fibers in the papermaking sludge and achieve sufficient mixing with the pulverized coal. The mixture is dehydrated by press-molding a metal mold and cloth in a mold. The dehydration process at the time of molding requires time, which hinders the efficiency of manufacturing the molded body.

In a molded body that is formed and dried by mixing binders such as paper sludge, coal ash, and starch, the dehydration process at the time of molding is still time-consuming, which hinders the efficiency of manufacturing the molded body. When vinyl acetate is used as the binder, the water discharged from the mixture at the time of molding increases in viscosity, and the dehydration process takes a longer time due to clogging of the wire mesh and filter cloth. It becomes a hindrance to conversion.
On the other hand, when pulverized coal is used as the mixture, the vinyl acetate solution surrounds the surface of the pulverized coal, and the vinyl acetate covers fine holes opened on the surface of the pulverized coal in the process of drying the formed body. For this reason, the compact | molding | casting inhibits the adsorption effect derived from pulverized coal.
Further, when a synthetic resin such as vinyl acetate is used at the time of manufacturing a molded body, the natural environment is contaminated when the molded body is discarded after being used.

Conventional fillers such as pillows made of paper fibers containing charcoal in a spherical shape are obtained by collecting paper fibers dispersed in water in a water-containing state and forming and dehydrating them in a spherical shape. And excessive energy is required for drying.
A conventional air purification filter using a nonwoven fabric mixes and spreads charcoal and a hot-melt binder on the nonwoven fabric substrate in order to keep the carbon particles dispersed in the thickness direction in the nonwoven fabric. The melt-type binder is melted and the charcoal is fused to the nonwoven fabric base material to maintain the dispersed state. This conventional air purification filter requires processing work, and if the amount of charcoal is increased, an increase in pressure loss is inevitable. The conventional double-pipe type air purification filter requires a double-cylinder container, which increases the number of processing steps and increases the manufacturing cost.

  Therefore, the present invention provides a molded article having moderate hardness and easy processing in a method for producing a molded article containing a pulp-inorganic particle mixture (for example, papermaking sludge, paper defibrated material, etc.) It is an object of the present invention to obtain a production method in which hydration during kneading is substantially unnecessary and a dehydration step during molding is substantially unnecessary. Another object of the present invention is to obtain a method for producing the molded body that can be molded into an arbitrary shape and that does not substantially impair the useful substances and functions of the mixture. Furthermore, it is an object of the present invention to obtain a method for producing a molded body that does not require cost and does not place an excessive burden on the natural environment when the molded body is discarded after being used.

  Another object of the present invention is that the processing is easy and has an appropriate hardness, the useful physical properties and functions of the mixture are not substantially impaired, the cost does not increase at the time of disposal, and it is appropriate for the natural environment. The object is to obtain a molded body containing a pulp-inorganic particle mixture without imposing a burden.

  Another object of the present invention is to obtain a novel material that retains the characteristics of charcoal and includes a pulp-inorganic particle mixture. Moreover, this invention makes it a subject to obtain the bedding and pillow which use the novel raw material which is the granular molded object which hold | maintains the characteristic of charcoal and contains a pulp-inorganic particle mixture. Furthermore, the present invention provides an adsorbent for an air purification filter that can be produced at low cost with a low pressure loss, using a novel material that is a granular molded body that retains the characteristics of charcoal and contains a pulp-inorganic particle mixture. An object is to obtain an air purification filter.

  Other problems of the present invention will become apparent from the following description of the present invention.

  When the inventor adds starch paste to papermaking sludge and kneads it, it becomes a fluid, can be easily mixed with other powders, can be molded into any shape, and does not require excessive addition of water. The inventors found that there was no drainage and reached the present invention.

The manufacturing method of the molded object concerning one aspect of this invention consists of the following processes.
A step of kneading a pulp-inorganic particle mixture containing pulp and inorganic particles and a starch paste-containing material to obtain an adhesive medium.
(B) A step of kneading one or more substances selected from the group consisting of wood powder, pulverized coal, and incinerated ash in the adhesive medium to obtain a molding raw material.
(C) A step of forming the forming base and then drying to obtain a formed body.

  In a preferred embodiment of the method for producing a molded body according to the present invention, the pulp-inorganic particle mixture may be papermaking sludge and / or waste paper defibrated material.

  In another preferred embodiment of the method for producing a molded body according to the present invention, the starch paste-containing material used in the step of obtaining the adhesive medium is derived from flour obtained by heating a mixture of flour and water. It may also contain starch paste.

The manufacturing method of the molded object concerning the other aspect of this invention consists of the following processes.
(B) A step of obtaining a pressure-sensitive adhesive medium by mixing and heating a pulp-inorganic particle mixture containing pulp and inorganic particles and a starch paste raw material to gelatinize the starch in the starch paste raw material. And a step of kneading one or more substances selected from the group consisting of incineration ash to obtain a molding raw material.
(C) A step of forming the forming base and then drying to obtain a formed body.

  In a preferred embodiment of the method for producing a molded body according to the present invention, the pulp-inorganic particle mixture may be papermaking sludge and / or waste paper defibrated material.

  In another preferred embodiment of the method for producing a molded body according to the present invention, the starch paste raw material used in the step of obtaining the adhesive medium may be wheat flour.

  The molded body according to one aspect of the present invention is a molded body containing one or more substances selected from the group consisting of a pulp-inorganic particle mixture including pulp and inorganic particles, starch paste, wood powder, pulverized coal, and incinerated ash. It is.

  In a preferred embodiment of the molded body according to the present invention, the pulp-inorganic particle mixture may be papermaking sludge and / or waste paper defibrated material.

  In a preferred embodiment of the molded product according to the present invention, the starch paste may be a wheat starch-derived starch paste obtained by heating the hydrated wheat flour.

  In a preferred embodiment of the molded body according to the present invention, the molded body may further contain titanium oxide powder.

  The granular molded body according to another aspect of the present invention comprises a pulp-inorganic particle mixture containing pulp and inorganic particles, starch paste and pulverized coal.

  In a preferred embodiment of the granular compact according to the present invention, the pulverized coal may be charcoal powder carbonized at 300 ° C to 750 ° C.

  In a preferred embodiment of the granular molded body according to the present invention, the granular molded body may further contain wood flour.

  In a preferred embodiment of the granular molded body according to the present invention, the granular molded body may further contain a ferrite powder.

  In a preferred embodiment of the granular molded body according to the present invention, the granular molded body may further contain titanium oxide powder.

  The bedding according to another aspect of the present invention is a bedding in which a breathable bag is filled with contents, wherein the contents include the granular molded body according to the present invention.

  A pillow according to another aspect of the present invention is a pillow in which a filler is filled in a breathable bag, and the filler includes the granular molded body according to the present invention.

  An air purification filter according to another aspect of the present invention is an air purification filter in which an adsorbent is held inside a breathable frame, wherein the adsorbent includes a granular molded body according to the present invention.

  One embodiment of the present invention described above, preferred embodiments of the present invention, and components included in these embodiments can be implemented in combination as much as possible.

The method for producing a molded article containing a pulp-inorganic particle mixture according to the present invention substantially eliminates the need for water addition during kneading, substantially eliminates the dehydration step during molding, and can be molded into any shape. It is a simple method. At the same time, the obtained molded body has an appropriate hardness, can be easily processed, and the physical properties and functions of the substance added as a mixture are not substantially impaired.
Furthermore, since the starch paste which is a natural product is used, it is a manufacturing method which can obtain the molded object which does not give an excessive burden to a natural environment in discarding the molded object after use.

  The molded body according to the present invention has an appropriate hardness, can be easily processed, and can be molded into an arbitrary shape without substantially impairing the physical properties and functions of the substance added as a mixture. Moreover, in the manufacturing process of the said molded object, the water at the time of kneading | mixing is substantially unnecessary, and the spin-drying | dehydration process at the time of shaping | molding is substantially unnecessary. Further, in the molded body, the powdery or granular material to be added as a mixture is composed of fibers and inorganic particles that are constituents of the papermaking sludge, and there is little detachment of the additive (powder) due to rubbing.

  The molded body according to the present invention is separated when stirred in water, and then solidified when dried and becomes a soft cotton-like body. The raw materials are organic and inorganic substances derived from natural products. For this reason, the molded body after use can be reused as an agricultural material and the like, and even if discarded, the natural environment is not excessively burdened.

  The granular molded body according to the present invention can be produced easily and inexpensively without substantially impairing the physical properties and functions of the charcoal added as a mixture and without substantially requiring a hydration / dehydration step during production. For this reason, it is suitable as an adsorbent for the contents or fillings of bedding and pillows and air purification filters.

  The granular compact mixed with powdered coal of medium and low temperature sintered charcoal according to the present invention has the same properties of medium and low temperature sintered charcoal as the pores of the microstructure are large compared to charcoal sintered at high temperature such as activated carbon. The pollen is also absorbed. For this reason, it is particularly suitable as an adsorbent for an air purification filter.

The granular molded object containing the pulverized coal and wood powder concerning this invention has the fragrance of the wood according to the raw material seed | species tree species of the said wood powder.
The granular molded body containing pulverized coal and ferrite powder according to the present invention is a granular molded body in which ferrite powder having a large specific gravity is uniformly mixed and molded due to the viscosity of the adhesive medium. Furthermore, since the effect of adjusting the magnetism of the surrounding space of ferrite powder is retained as it is in the granular compact, it has a health promoting action derived from magnetism in addition to the properties of pulverized coal, and is suitable as a filling for bedding and pillows. is there.

  In the bedding according to the present invention, the filler is formed by entanglement of the fibers, and the fibers having a fine structure are exposed on the surface. Therefore, the bedding is formed between the granular formed body and between the granular formed body and the bag body. Has moderate friction. In particular, when the contents of the bedding are cotton, cotton, wool, or the like, there is a certain amount of friction with these contents, and movement due to folding or vibration is reduced. Moreover, since the filler has charcoal properties such as deodorization, humidity control, generation of far infrared rays, and generation of negative ions, it is a bedding excellent in health promotion.

  In the pillow according to the present invention, the filler is formed by entanglement of the fibers, and the fibers having a fine structure are exposed on the surface. Therefore, the pillow is moderately placed between the granular molded body and the granular molded body and the bag body. Have good friction. For this reason, it deform | transforms moderately in use and can hold | maintain a user's head, neck, etc. in a suitable state. In addition, since the generation of fine particles due to the rubbing of the filler is suppressed, it is not necessary to use a bag body that takes into account excessively fine dust prevention. Furthermore, since the filler has charcoal properties such as deodorization, humidity control, generation of far infrared rays, and generation of negative ions, it is a pillow that is excellent in promoting health.

  The air purification filter according to the present invention can increase the thickness of the adsorbent because the vent of the frame can be enlarged and the pressure loss is small. And it becomes possible to effectively utilize the properties of charcoal such as deodorization and particulate adsorption.

  The method for producing a molded product according to the present invention, the molded product, a granular molded product, and a product using the same will be further described. The dimensions, materials, shapes, mixing ratios, manufacturing conditions, etc. of the members and parts described in the embodiments of the present invention are intended to limit the scope of the present invention only to those unless otherwise specified. It's just an example.

Hereinafter, “parts” means “parts by weight” unless otherwise specified.
In the present invention and the specification of the present application, the pulp-inorganic particle mixture is a mixture of beaten wood or non-wood plant fibers (pulp), filler (clay, calcium carbonate, etc.) and / or inorganic pigment. Means. Examples of the pulp-inorganic particle mixture include paper sludge, waste paper defibrated material, other paper defibrated material, and finished paper before paper making. From the economical viewpoint, paper sludge and waste paper defibrated material are preferable as the pulp-inorganic particle mixture.

  If papermaking sludge is used as the pulp-inorganic particle mixture, the molded body and the granular molded body have a higher specific gravity and an increased hardness. When a paper woven fabric is used as the pulp-inorganic particle mixture, the compact and granular compact have a reduced specific gravity and a reduced hardness.

<First Manufacturing Method of Molded Body>
FIG. 1 is a process diagram showing a first manufacturing method of a molded body.
First, water is added to the starch-containing material 1, stirred and mixed, and the mixture is heated. After heating, the mixture is allowed to cool to obtain a starch paste-containing material 2. The cooling may be forced cooling. The starch paste-containing material 2 may be cooled to room temperature, or may be lowered to a certain temperature and used for mixing with the next papermaking sludge. The temperature of the starch paste-containing material can be determined appropriately in consideration of the safety of work, the time required for cooling, etc., for example, cooled to 50 ° C. (or allowed to cool) and used for mixing with paper sludge Can do.

The starch-containing material 1 includes potato starch, potato starch, katsu flour, starch, sticky rice flour, wheat flour (including strong flour and soft flour), barley flour, buckwheat flour and the like. The starch paste-containing material 2 may be a cooked rice kneaded with rice grains in addition to the above-mentioned powdered starch-containing material 1 dissolved in water, and may also be a cooked rice grain, wheat grain, barley grain, etc. heated in water. It may be kneaded after heating.
The starch paste-containing material 2 is particularly preferably a wheat starch-derived starch paste-containing material because the raw material can be obtained at a low cost and is a natural product.

  In the case of producing the starch paste-containing material 2, the weight ratio of the starch-containing material 1 to water is usually 1 to 15 parts of water with respect to 1 part of the starch-containing material 1, and preferably the starch-containing material 1 is It is 1-10 parts of water with respect to 1 part, More preferably, the starch containing material 1 is 2-8 parts of water with respect to 1 part. Even when the starch-containing material 1 is wheat flour or potato starch, the above weight ratio can be applied.

  The heating for making the paste may be performed at such a temperature and time that almost all of the starch is gelatinized. Usually, the white turbidity of the aqueous solution disappears, and the α-ization can be known by making it transparent. For example, the boiling state may be maintained for 3 to 5 minutes.

Next, the papermaking sludge and / or the paper defibrated material 3 and the starch paste-containing material 2 are kneaded to obtain the adhesive medium 4.
The papermaking sludge and / or the paper defibrated material 3 is an example of a pulp-inorganic particle mixture.

  The papermaking sludge may be sludge discharged by any of papermaking using 100% virgin pulp, papermaking using 100% used paper defibrated material, or papermaking mixed with virgin pulp and used paper defibrated material at an arbitrary ratio. . In addition, the object of the papermaking includes papermaking such as printing / information paper, packaging paper, sanitary paper, hybrid paper, cardboard base paper, paperboard board and the like. As the papermaking sludge, papermaking sludge discharged when manufacturing these paper products can be used.

  Paper sludge having a water content of about 60% to 70% is easily available, and it is preferable to use this. The weight ratio of organic matter to inorganic matter of the papermaking sludge is about 6: 4, but this ratio varies depending on the papermaking process from which the papermaking sludge is derived. Usually, it is not necessary to adjust the ratio at the stage of the adhesive medium 4. However, it is optional to perform the adjustment. When it is necessary to adjust the ratio of the organic substance to the inorganic substance of the molded body 7 for the purpose of maintaining the quality of the molded body 7 or the like, incineration ash, etc., in the subsequent kneading stage of the adhesive medium 4 and the powder 5 The ratio may be adjusted by mixing inorganic particles, paper defibrated material, and the like.

  A paper defibrated material may be selected as the pulp-inorganic particle mixture. The defibrated paper is preferably a defibrated paper from the viewpoint of economy. The waste paper defibrated material is obtained by, for example, putting waste paper into a pulper and dissolving the fiber in water, and may or may not be deinked or bleached. The paper defibrated material has a property that the fiber length is longer than that of the papermaking sludge and the content of inorganic particles is low. As in the case of using papermaking sludge, the ratio of the organic substance to the inorganic substance may or may not be adjusted at the stage of the adhesive medium 4. When it is necessary to adjust the ratio of the organic substance to the inorganic substance of the molded body 7, incineration ash, other inorganic particles, papermaking sludge, etc. are mixed in the subsequent kneading stage of the adhesive medium 4 and the powder 5, and the ratio May be adjusted.

  Hereinafter, the case where papermaking sludge is employ | adopted as papermaking sludge and / or the paper defibrated material 3 is demonstrated. When adopting a paper defibrated material, “paper sludge” in the text may be read as “paper defibrated material”.

  Any mixer may be used for kneading the papermaking sludge 3 and the starch paste-containing material 2. An example of a mixer is a kneader (for example, Kneader KH-5 manufactured by Ebara Industries Co., Ltd.). The kneading may be performed for an arbitrary time so that the two are sufficiently mixed. For example, it may be performed for about 10 minutes to 2 hours, and is preferably performed for about 20 minutes to 30 minutes.

  In the papermaking sludge 3, when the moisture content is 65% or less, fibers are entangled with each other, and a large force is required for stirring. However, when the starch paste-containing material 2 is added, the fluidity increases and the adhesive medium 4 is obtained. Therefore, the adhesive medium 4 can knead the powder uniformly. The adhesive medium 4 can be formed into an arbitrary shape.

  The pressure-sensitive adhesive medium 4 can be kneaded without problems even in powders having large particles (for example, an average particle diameter of 1 mm) and particles having small particles (for example, particles having an average particle diameter of 1 μm or smaller).

In addition, since the adhesive medium 4 is not hydrated, it contains only water remaining as a result of pressing and draining at the time of paper sludge recovery (water content 60% to 70%) and water added as the starch paste-containing material 2. The water content is low. And these water | moisture contents are hold | maintained in the adhesive medium 4, and even if it compresses at the time of shaping | molding, there is almost no waste_water | drain. One of the advantages of the present invention is that there is no drainage of a solution such as PVA that has a high viscosity and causes clogging of the filter cloth. However, water may be added at the time of producing the adhesive medium 4 or at the time of producing the original molding, and even if such water is added, it is within the technical scope of the production method according to the present invention.
Since there is no need to wait for drainage, the time required for the molding process (in addition to the subsequent drainage process) is shortened, and handling is easy. At the same time, the subsequent drying process is shortened due to the low water content.

  Although it is possible to form only a pressure-sensitive adhesive medium 4 and dry it to make a molded body, the molded body becomes too hard and, for example, it does not pass through a nail, resulting in poor workability. In addition, the drying shrinkage increases to 25% to 35%, and warping occurs during drying.

  Therefore, the powder 5 is added to the adhesive medium 4 and kneaded to form a molding base 6, and the molding base 6 is molded and dried to obtain a molding 7.

  The powder 5 may be one selected from wood powder, pulverized coal, and incinerated ash, may be selected from two of these, or may include all three. One kind may contain two or more powders having different characteristics. For example, wood powders of different tree species may be mixed, and charcoal powders having different carbonization temperatures (sintering temperatures) and charcoal erasing methods may be mixed.

  Any mixer may be used for kneading the adhesive medium 4 and the powder 5. An example of a mixer is a kneader (for example, Kneader KH-5 manufactured by Ebara Industries Co., Ltd.). The kneading may be performed for an arbitrary time so that the two are sufficiently mixed. For example, it may be performed for about 10 minutes to 2 hours, and is preferably performed for about 20 minutes to 30 minutes.

When wood powder is selected as the powder 5, a forming base 6 is prepared by kneading the adhesive medium 4 and wood powder, and then molded and dried to form a formed body 7, drying shrinkage from the forming base 6 to the formed body 7 is performed. The rate is 10-14%. This is approximately half the value when the adhesive medium 4 alone is formed into a molded body. Therefore, the warp and distortion resulting from drying are almost eliminated.
The resulting molded article has a low specific gravity, can be nail-fastened and wood screw-fastened, and can be easily cut. In addition to the adsorptive and hygroscopic effect of the fibers and clay minerals contained in the papermaking sludge, the molded body has an adsorbed and hygroscopic effect derived from wood flour. Furthermore, since the scent of the tree peculiar to a raw material tree species is added to a molded object, it is comfortable.

  There is no restriction | limiting in particular in the raw material seed | species tree species of wood powder, According to the objective and use of a molded object, what is necessary is just to select the wood powder derived from suitable tree species, and you may mix the wood powder obtained from multiple types of tree species. The average particle diameter of the wood flour is usually 2 mm or less, preferably 1 mm or less, more preferably 0.01 mm or more and 0.5 mm or less. Within this range, the adsorption and moisture absorption effect of the wood powder is further increased. Sawdust discharged during the lumbering process can be used as it is for wood flour.

When powdered coal is selected as the powder 5, a forming base 6 is prepared by kneading the adhesive medium 4 and powdered coal, and molded and dried to form a formed body 7, the drying shrinkage rate from the forming base 6 to the formed body 7 is as follows. 14 to 19%. Accordingly, warping and distortion resulting from drying are eliminated to some extent.
The resulting molded article has a low specific gravity, can be nail-fastened and wood screw-fastened, and can be easily cut.

  In addition, the pressure-sensitive adhesive medium 4 made of paper sludge and starch paste-containing material does not discharge water even when the water-holding power is strongly compressed (it is assumed that moisture is confined in the fiber structure in the pressure-sensitive adhesive medium). The dilute solution of starch paste covers the surface of pulverized coal and then dries, so that it hardly penetrates into and covers the surface openings of the fine holes and the inside of the fine holes, which are functional factors of charcoal. Therefore, a molded body can be obtained without substantially losing the adsorption action, humidity control action, far-red effect, electromagnetic wave absorption effect, etc. possessed by charcoal.

  There are no particular restrictions on the raw coal species of pulverized coal, and examples include oaks, oaks, bamboo, beech, hickory, mangroves, and cocoon cocoons. Moreover, forest land waste and factory waste may be used. There is no particular limitation on the temperature during carbonization.

Table 1 illustrates the properties of charcoal depending on the temperature during carbonization.

  Therefore, the pulverized coal may be any of activated carbon, white coal, black coal, kun coal, or a mixture thereof. Furthermore, the powder of coal and coal coke may be sufficient.

  The average particle diameter of pulverized coal is usually 1.0 mm or less, preferably 0.5 mm or less, more preferably 0.01 mm or more and 0.5 mm or less, and most preferably 0.01 mm or more and 0.2 mm or less. . Within this range, the adsorption and moisture absorption effect of pulverized coal becomes greater.

  Alternatively, incinerated ash may be selected as the powder 5, a forming base 6 in which the adhesive medium 4 and the incinerated ash are kneaded is formed, and molded and dried to form a formed body 7.

  According to the conventional method for producing a paper sludge molded body, there is wastewater from the raw material at the time of molding, and incineration ash having a small particle diameter is mixed in the wastewater, which causes clogging of the filter cloth. However, since the pressure-sensitive adhesive medium 4 composed of a papermaking sludge and a starch paste-containing material has little drainage during molding, even the incinerated ash having a small particle diameter can be kneaded into the molding base 6. The molded body has an adsorption effect similar to that of zeolite, and has an effect of imparting flame retardancy to the molded body. Furthermore, since there are many fine voids, the heat insulation effect is excellent.

There are no particular restrictions on the raw materials for incineration ash. However, it is preferable that the incineration ash has less harmful substances such as dioxin. From this point of view, incineration ash made of a material not containing plastic is preferred. Further, incineration ash such as wood, rice straw, straw, bagasse and paper is more preferable.
The average particle size of the incinerated ash particles is usually 0.5 mm or less, preferably 0.2 mm or less. The molding base 6 according to the present invention does not use a filter cloth because there is almost no drainage during molding. Therefore, there is no need to consider clogging of the filter cloth as in the conventional example, so no problem arises even if incinerated ash particles having an average particle diameter of several microns or less are used.

  As the powder 5, two or more kinds selected from wood powder, pulverized coal, and incinerated ash may be kneaded in the adhesive medium 4 to form the molding base 6, and the molded body 7 may be used. In this case, a molded body having both the characteristics of the selected powder 5 is obtained.

In addition to the powder 5 described above, titanium oxide powder may be added to the molding base 6. Titanium oxide is sometimes used together with clay and calcium carbonate as a pigment and / or filler in papermaking, and may be contained in papermaking sludge and paper defibrated material. Titanium oxide may be added when the papermaking sludge and paper defibrated material used do not contain titanium oxide, and when the papermaking sludge and paper defibrated material used contain titanium oxide. In addition, titanium oxide may be further added. Titanium oxide may be added in the step of forming the forming base 6 and / or added in the step of forming the adhesive medium 4.
Titanium oxide is a photocatalyst, and an effect of oxidizing the substance attached to and adsorbed to the molded body 7 is added.

In addition to the powder 5 described above, a papermaking sludge (hydrated), a pulverized product of dried papermaking sludge, a paper defibrated material (hydrated), a pulverized product of dried paper defibrated material, etc. may be added to the forming base 6. Good.
When an adhesive medium is prepared using only papermaking sludge as a pulp-inorganic particle mixture, a paper defibrated material (containing water) and / or a pulverized material of a dried paper defibrated material is added in the step of forming the molding raw material. In addition, the drying shrinkage ratio from the forming base 6 to the forming body 7 is reduced, and warping and distortion during drying are eliminated to some extent. The resulting molded article has a low specific gravity, can be nail-fastened and wood-screw-fastened, and can be easily cut.

  In addition to the powder 5 described above, water (distilled water, tap water, industrial water, etc.), coloring agents, fungicides, and the like may be added to the molding base 6 as necessary.

  There is no restriction | limiting in particular in the shape of the molded object 7, It can be set as plate shape, columnar shape, and other arbitrary shapes. For example, pulverized coal may be selected as the powder 5 to create a doll-shaped figurine.

The molding base 6 can be dried by sun drying, drying by shade drying, drying in a room temperature air flow, drying in a low temperature (for example, 50 ° C. or lower) constant temperature bath, and further using a circulating air flow in the constant temperature bath. Can be used. You may dry in the state which assists shape maintenance of a molded object by pinching | interposing a molded object between metal meshes, etc. In this case, a higher drying condition can be employ | adopted.
For drying the spherical shaped body, for example, a horizontal cylindrical dryer may be used.

  The first production method of the molded body according to the present invention has been described above by taking the case where the pulp-inorganic particle mixture is papermaking sludge as an example. When the pulp-inorganic particle mixture is a paper defibrated material, as described above, the “paper sludge” in the description may be read as “paper defibrated material”.

<Second Manufacturing Method of Molded Body>
In the first production method of the molded body, the pulp-inorganic particle mixture and the starch paste-containing material are kneaded (or mixed) to create an adhesive medium, but the pulp-inorganic particle mixture and the starch paste raw material are mixed, The adhesive medium may be prepared by heating.
FIG. 2 is a process diagram showing a second method for producing a molded body.
In the second method for producing a molded product, the papermaking sludge and / or the paper defibrated material 3 and the starch paste raw material 8 which are pulp-inorganic particle mixtures are mixed and heated to gelatinize the starch in the starch paste raw material 8. The adhesive medium 4 is obtained. Hereinafter, the case where the papermaking sludge 3 is employ | adopted as a pulp-inorganic particle mixture similarly to description of a 1st manufacturing method is demonstrated.

  In the step of producing the adhesive medium 4, (1) the total amount of the papermaking sludge 3 and the total amount of the starch paste raw material 8 may be mixed and then heated. (2) A part of the papermaking sludge 3 and a part of the starch paste raw material 8 are mixed and then heated to form an adhesive medium, and then the remaining papermaking sludge 3 and the starch paste raw material 8 are added individually or in combination. Then, mixing and heating may be performed. Alternatively, (3) the whole amount of the papermaking sludge 3 may be heated, and the starch paste raw material 3 may be mixed in a stepwise manner while stirring this.

The starch paste raw material 8 may be made into an aqueous solution and added to the papermaking sludge as necessary.
The papermaking sludge 3 may be hydrated as necessary.
For such mixing and heating, for example, a double container kneader may be used to introduce water vapor or hot water into the cavity.

  The kind of the pulp-inorganic particle mixture 3 is the same as that described in the first manufacturing method of the molded body, and the preferable one is also the same. Moreover, the kind of the starch paste raw material 8 is the same as the starch-containing material 1 in the first manufacturing method of the molded body, and the preferable one is also the same.

Thus, the manufacturing process after obtaining the adhesive medium 4 is the same as the 1st manufacturing method of a molded object.
In the above, the 2nd manufacturing method of the molded object concerning this invention was demonstrated taking the case where the pulp-inorganic particle mixture is a papermaking sludge as an example. When the pulp-inorganic particle mixture is a paper defibrated material, “paper sludge” in the description may be read as “paper defibrated material”.

<Mixing ratio of raw materials in the first and second production methods of the molded body>
The mixing ratio of the raw materials in the 1st manufacturing method of a molded object and the 2nd manufacturing method of a molded object is demonstrated. The mixing ratio of the papermaking sludge and the starch paste-containing material is usually expressed by the weight of the papermaking sludge 3 (wet weight containing about 60% to 70% water) and the starch paste-containing material 2 (paste-like material). It is 0.1 to 1: 1, preferably 1: 0.3 to 1: 0.5.

In addition, the weight ratio of the papermaking sludge and the powder in the molding base 6 is 1 part of the papermaking sludge 3 (wet weight containing about 60% to 70% moisture),
0 to 0.5 parts of wood flour
0 to 0.5 parts of pulverized coal,
Incineration ash 0 to 0.7 parts,
It is preferable to make it about.
When two or more kinds of powders are mixed in the molding base 6, it may be determined by trial and error with reference to the number of parts mixed alone and the number of parts mixed in the examples described below.

When adopting a paper defibrated material as the pulp-inorganic particle mixture, for example, 2 to 8 parts of water are mixed with 1 part of waste paper defibrated material (dehydrated by pressing), and starch paste raw material ( Powder) may be added.
The mixing ratio of the adhesive medium and the powder is the same as the mixing ratio in the papermaking sludge.

  The molded body 7 is separated when stirred in water. When the separated product is dried, it becomes a soft cotton-like product. This property is in contrast to the fact that after the papermaking sludge is hydrated into a mixed solution, the mixed solution is dried and then solidified again. For this reason, after the molded body 7 is used, it can be reused for agricultural materials.

  A decorative sheet may be affixed to the surface of the molded body, and the molded body may be colored by adding a colorant to the original molding body.

<Granular molded body>
In the granular compact according to the present invention, pulverized coal is used as the powder 5. The raw coal species, the baking method, and the average particle diameter of the pulverized coal are the same as those of the pulverized coal mixed in the above-described molded body.
In a granular molded body, when charcoal carbonized at 300 ° C. to 750 ° C. (in the present invention and the present specification, sometimes referred to as “medium-low temperature sintered charcoal”), the granular molded body is particles such as pollen. Can be adsorbed, and is preferably used as an air purification filter adsorbent, bedding, pillows and other contents or fillings, and more preferably as an air purification filter adsorbent. Medium and low-temperature sintered charcoal has a feature that the pores of charcoal are larger than the pores of charcoal prepared at high temperature and can adsorb substances with large particles. In addition, the softness which is the property of medium-low temperature sintered charcoal is relieved by being contained in the compact.

From the viewpoint of increasing the adsorption performance of pollen and the like, it is preferable to use charcoal carbonized at 300 ° C to 500 ° C, and more preferably charcoal carbonized at 300 ° C to 400 ° C.
As the pulverized coal, a granular molded body may be produced using only the powder of medium-low temperature sintered coal, or the powder of high-temperature sintered coal (including activated carbon) may be mixed. The mixing ratio of the powder of the medium and low-temperature sintered coal and the powder of the high-temperature sintered coal in the pulverized coal can be freely determined according to the purpose and application of the granular compact. When using a granular compact as an adsorbent for an air purification filter, the weight ratio of the powdered coal of medium-low temperature sintered coal and the powdered coal of high-temperature sintered coal is preferably 3: 7 to 7: 3, 4: 6. It is more preferable to set to 6: 4.

  In the granular molded body, when wood powder is mixed in addition to pulverized coal as the powder 5, the granular molded body is added with a fragrance corresponding to the tree species used as the raw material of the wood powder. For this reason, the said granular molded object is preferable as contents or fillings, such as bedding and a pillow, and the adsorption agent for air purification filters, and is especially preferable as contents or fillings, such as bedding and a pillow. The raw material tree species, the average particle diameter, and the like of the wood powder are the same as in the case of the molded body described above.

  The granular molded body may contain ferrite powder. Ferrite powder may be added in the process of manufacturing the adhesive medium, or may be added in the process of manufacturing the forming base. The granular molded body in which ferrite is mixed has a function of adjusting the magnetic field in the surrounding space, and is preferable as a content or filling such as bedding and pillows for health promotion. Ferrite powder is a substance having a large specific gravity, and it is generally difficult to obtain a granular compact that is uniformly mixed with a substance having a small specific gravity such as pulp. However, the adhesive medium 4 composed of the papermaking sludge 3 and the starch paste-containing material 2 is a substance having viscosity, and until the molding raw material in which the ferrite powder is uniformly mixed is obtained and dried and solidified into the molded body, An evenly mixed state can be maintained.

  The particle diameter of the ferrite powder as the powder 5 is usually 30 μm or less, preferably 1 μm to 10 μm, more preferably 2 μm to 5 μm. Within this range, mixing and uniform dispersion with the adhesive medium 4 are facilitated.

  The shape of the particles of the granular molded body can be any shape such as a sphere, a substantially spherical shape, an elliptical sphere, a cylinder, a prism, a regular polyhedron, a polyhedron, and an indefinite shape. As the contents or filling of the bedding or pillow, a sphere, a substantially spherical shape, an elliptical sphere, or a cylinder having a diameter to height ratio of about 1 to 2 is preferable from the viewpoint of excellent touch feeling. As the adsorbent for the air purification filter, a sphere, a substantially spherical shape, an elliptic sphere, and a regular polyhedron (for example, a regular dodecahedron and a regular icosahedron) are preferable from the viewpoint that the airflow flowing outside the granular molded body is stabilized.

The granular compact may include titanium oxide particles. The titanium oxide particles may be added in the step of producing the adhesive medium, or may be added in the step of producing the forming raw material. The particle diameter of titanium oxide, the effect when added, and the like are the same as described in the first manufacturing method of the molded body.
In addition to pulverized coal and optionally added wood powder, ferrite powder, and titanium oxide particles, the granular molded body may include incineration ash, and further paper disintegration and papermaking sludge added to the adhesive medium.

  The size of the granular molded body can be arbitrarily determined. Usually, the upper limit is preferably 30 mm or less as the diameter of a sphere having the same volume as one particle of a granular molded body (referred to as a sphere equivalent diameter). This is from the standpoint of promoting drying of the molding base and promoting contact with air. The lower limit is usually preferably 2 mm or more. This is from the viewpoint of easy handling of the granular compact. In the case of a pillow filling, bedding contents, and an air purification filter adsorbent, the sphere equivalent diameter is usually 5 mm to 30 mm, preferably 5 mm to 10 mm. This is from the viewpoint of tactile sensation and easy handling.

  The particle diameter of the granular molded body is preferably small in distribution, but may be distributed. In the case where there is a distribution, a preferable distribution width is a distribution width in which 80% of the observed particles fall between 1/2 and twice the simple average value of the sphere-converted diameter, and more preferably 90%. Distribution width.

  The manufacturing method of a granular molded object is the same as the 1st manufacturing method of the molded object mentioned above, or the 2nd manufacturing method of a molded object. The pulp-inorganic particle mixture, the starch-containing material (or starch paste raw material), the mixing ratio of the adhesive medium 4 and the powder 5, the machine used for kneading, the drying method, and the like are the same as those of the above-mentioned molded body.

<Bedding, pillow>
The bedding according to the present invention is a bedding in which a breathable bag is filled with the content, and the content is a granular molded body. The bedding includes futons (clothes, mattresses, bed pads, etc.), cushions, cushions, and the like. The bag includes fabric, non-woven fabric, grass fabric and the like. The bag body may be a single, double, triple, etc. bag of the same or different material. The contents include cotton, cotton, wool, foamed urethane, feathers and the like. A granular molded object may be mixed in these contents, and a content and a granular molded object may be divided and stored in one bag. When the contents and the granular molded body are divided, it is preferable to divide both into layers.

  Since the granular molded product is formed by entanglement of fibers, the fiber is also exposed on the surface, and when mixed into cotton, cotton, wool, there is a certain amount of friction due to the entanglement of the fibers, and it will shake even when folded. Even if it is difficult to move. Further, after the contents and the granular molded body are stored in the bag body, the bag body may be sewn appropriately and divided into small chambers, which further restricts the movement of the granular molded body in the bedding. Is done.

FIG. 3 is a partially cutaway perspective view illustrating the pillow 31 according to the present invention.
The pillow according to the present invention is obtained by filling a breathable bag 32 with a granular molded body 33 as a filler. The bag body 32 includes a fabric, a nonwoven fabric, a grass fabric, and the like. The bag body 32 may be a single, double, triple, etc. bag of the same or different material. The filler 33 may be filled only with a granular molded body, or may be filled with a conventional filler (cereal husks such as buckwheat husk, wood chips, plastic chips, etc.) and a granular molded body in combination. When used in combination, the granular molded body and the conventional filler may be mixed, and these may be distinguished and stored in one bag body.

<Air purification filter>
FIG. 4 is a partially cutaway perspective view illustrating the air purification filter 41 according to the present invention. The synthetic resin frame 42 is provided with vent holes 45 on the opposing wall surfaces 43 and 44, respectively. A coarse nonwoven fabric 46 is provided on the inner surface of the wall surface 43 so as to cover the vent hole 45, and a rough nonwoven fabric 47 is provided on the inner surface of the wall surface 44 so as to cover the vent hole 45. The frame body 42 is filled with a granular molded body 48 that is an adsorbent while being sandwiched between the nonwoven fabrics 46 and 47.

  The frame body 42 is used as long as it has air permeability and can hold the granular molded body, and may be made of an appropriate shape and material. In addition to the illustrated bar shape, the vent may be, for example, a lattice shape or a punch hole. As shown in the drawing, the frame body 42 may be filled with the granular molded body in a state of being wrapped in a non-woven fabric, or may be filled as it is without using the non-woven fabric.

  The air purification filter may be used as an air purifier integrated with an air flow generating means such as a fan, or may be used by being disposed at an air circulation port or an air passage portion of a cooling / heating device. In FIG. 4, the air flow is indicated by arrows 49 and 50.

<Molding test-1>
The paper sludge and starch paste-containing material were kneaded for 20 minutes with Kashihara Kogyo Kneader KH-5 type to prepare an adhesive medium. As the starch-containing material, commercially available edible starch powder and commercially available edible strong wheat flour were used. These were dissolved in 10 times distilled water and heated to be gelatinized to obtain a starch paste-containing material.

Powder (and sludge dry powder and distilled water) was added to the adhesive medium and kneaded for 20 minutes with the kneader to prepare a forming original. The forming original body was formed into 68 mm × 68 mm × thickness 7-15 mm, and was left to dry in the shade to obtain a formed body.
Table 2 shows the composition and weight of the molding base and the weight of the dried molding.

  The papermaking sludge has a moisture content of 65%, but the wet weight is indicated in g. As the starch, a commercially available edible starch was used, and 10 times the amount of distilled water was added, mixed and heated to obtain a starch paste-containing material. As the flour, commercially available edible flour (strong flour) was used, and 10 times the amount of distilled water was added, mixed and heated to obtain a starch paste-containing material. In the table, starch and wheat flour indicate the weight of starch paste-containing material (paste-like liquid) in g. Sludge dry powder is obtained by drying paper mill sludge and then pulverizing it. Compositions are given in grams. The molding base weight and the molding dry weight are shown in g (the same applies to Tables 3 and 4).

R-1-1 and R-1-2 do not contain powder. These were less deformed and cracks were observed during drying.
1-1 had a smaller shrinkage rate and no deformation compared to R-1-1 and R-1-2. 1-2 had a large shrinkage rate and little deformation. In 1-3, some cracks were observed. 1-4 had many cracks and a large shrinkage rate. 1-5 and 1-6 were not deformed and were not cracked. Here, “deformation” means warpage of the flat plate-shaped test piece, curved surface, and the like (the same applies to the following examples).

<Molding test-2>
In the same manner as in the molding test-1, an adhesive medium and a molding base were prepared, and a molded body that was a test piece of the same size was prepared.
Table 3 shows the composition and weight of the molding base and the characteristics of the molding.

  The papermaking sludge has a moisture content of 65%, but the wet weight is indicated in g. As the flour, commercially available edible flour (strong flour) was used, and 10 times the amount of distilled water was added, mixed and heated to obtain a starch paste-containing material. In the table, the flour indicates the weight of the starch paste-containing material (paste-like liquid) in g. The weight ratio of wheat flour to water at the time of producing the starch paste-containing material is partially changed, and the weight ratio of wheat: water is shown in the table. Compositions are given in grams.

  The evaluation “◎” indicates that deformation and cracking are particularly small. The evaluation “◯” indicates that there is little deformation and no cracking occurs. Evaluation "x" (2-7) has shown that the molded object was not fully integrated and the molded object was not formed. This is presumably because there was too much powder (total amount of wood powder and incinerated ash) relative to the adhesive medium.

<Molding test-3>
In the same manner as in the molding test-1, an adhesive medium and a molding base were prepared, and a molded body that was a test piece of the same size was prepared.
Table 4 shows the composition and weight of the molding base and the characteristics of the molding.

  The papermaking sludge shows its dry weight (g), assuming a moisture content of 70%. As the starch, a commercially available edible starch was used, and 10 times the amount of distilled water was added, mixed and heated to obtain a starch paste-containing material. In the table, the weight of the raw starch powder is expressed in g. Other compositions are given in grams.

  In the numbers a to p, there was little deformation of the molded body, and no cracks were generated.

<Destructive load test>
A bending fracture (maximum) load was measured for the test piece created in the molding test-3. For the measurement, a universal material testing machine AG-1 manufactured by Shimadzu Corporation was used.
Referring to FIG. 5, test piece 11 is supported at fulcrum A (13) and fulcrum B (14), and a downward load is applied to load point 12 of the material testing machine at a test speed of 1 mm / min. The maximum load until the piece 11 broke was read.
Table 5 shows the measurement results.

  In the table, the distance between fulcrums indicates the distance l between the fulcrum A13 and the fulcrum B14 in mm. The length of the fulcrum A (13) (and the fulcrum B (14)), that is, the distance between the front and back of the paper surface in FIG. 2, is the length of the test piece, and is about 60 mm for each test piece. .

<Formaldehyde adsorption test-1>
An adsorption test of formaldehyde was performed using the test piece created in the molding test-3.
Put a test piece and 50ppm of initial formaldehyde (mildform NM manufactured by Wako Pure Chemical Industries, Ltd.) into a synthetic resin gas collection bag with an internal volume of 12 liters (liter). The formaldehyde concentration of was measured. The dry weight of each of test piece l and test piece n was 18 g.
Table 6 shows the measurement results.

<Microscope observation>
The molded body was stirred in water, and the separated fibers were observed with a microscope. Moreover, after making papermaking sludge into water solution, the fiber was observed with the microscope. The fibers obtained by separating the molded body had almost no adhesion of inorganic particles. On the other hand, adhesion of a large number of inorganic particles was observed in the fibers derived from paper sludge.

<Production test of granular compact>
A granular molded body was prepared according to the second manufacturing method of the molded body. That is, 36 g of papermaking sludge having a water content of 65% and 10 ml of water were charged into a kneader, 4 g of wheat flour was added while mixing and heating, and the starch of the flour was gelatinized to prepare an adhesive medium. The cohesive medium was kneaded with 60 g of pulverized coal with a kneader to prepare a molding base. The pulverized coal was a 1: 1 mixture (weight ratio) of kunchar and activated carbon, and the average particle size was 0.2 mm.
The shaped base was formed into a spherical shape with a particle size of about 8 mm, and dried in the shade to obtain a granular shaped product with a particle size of about 7 mm.

<Formaldehyde adsorption test-2>
The formaldehyde adsorption test of the granular molded body produced by the production test of the granular molded body was performed.

About 15 g of the sample was placed in a synthetic resin gas collection bag having a capacity of 3 l (liter) and sealed with formaldehyde gas having a concentration of 100 vol ppm. This time was taken as the start time of the test, and the formaldehyde gas concentration was measured with a gas detector tube over time.
In the comparative test, about 15 g of massive charcoal having a humidity during carbonization of about 800 ° C. was used.
In the blank test, only the formaldehyde gas was sealed in the synthetic resin gas collection bag, and the formaldehyde gas concentration was measured.
The test results are shown in Table 7.

  The molded body according to the present invention can be used as, for example, building materials, furniture, furniture, daily necessities, and various industrial materials. The granular molded body according to the present invention can be used as an adsorbent for the contents or fillings of bedding and pillows and air purification filters.

It is process drawing which shows the 1st manufacturing method of a molded object. It is process drawing which shows the 2nd manufacturing method of a molded object. It is a partially notched perspective view explaining the pillow 31 concerning this invention. It is a partially cutaway perspective view illustrating an air purification filter 41 according to the present invention. It is explanatory drawing explaining the bending fracture (maximum) load measuring method of a test piece.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Starch inclusion 2 Starch paste inclusion 3 Papermaking sludge and / or paper disentanglement 4 Adhesive medium 5 Powder 6 Molding raw material 7 Molded body 8 Starch paste raw material 11 Test piece 12 Load point 13 Support point A
14 Support point B

DESCRIPTION OF SYMBOLS 31 Pillow 32 Bag body 33 Granular molded object which is a filling 41 Air purification filter 42 Frame body 43, 44 Wall surface 45 Vent 46, 47 Nonwoven fabric 48 Granular molded object 49, 50 which shows adsorbent

Claims (18)

The manufacturing method of the molded object which consists of the following processes.
A step of kneading a pulp-inorganic particle mixture containing pulp and inorganic particles and a starch paste-containing material to obtain an adhesive medium.
(B) A step of kneading one or more substances selected from the group consisting of wood powder, pulverized coal, and incinerated ash in the adhesive medium to obtain a molding raw material.
(C) A step of forming the forming base and then drying to obtain a formed body.   The said pulp-inorganic substance mixture is papermaking sludge and / or used paper defibrated material, The manufacturing method of the molded object of Claim 1 characterized by the above-mentioned.   The starch paste-containing material used in the step of obtaining the adhesive medium is a flour-derived starch paste-containing material obtained by heating a mixture of flour and water. Production method. The manufacturing method of the molded object which consists of the following processes.
(B) A step of obtaining a pressure-sensitive adhesive medium by mixing and heating a pulp-inorganic particle mixture containing pulp and inorganic particles and a starch paste raw material to gelatinize the starch in the starch paste raw material. And a step of kneading one or more substances selected from the group consisting of incineration ash to obtain a molding raw material.
(C) A step of forming the forming base and then drying to obtain a formed body.   The said pulp-inorganic particle mixture is papermaking sludge and / or used paper defibrated material, The manufacturing method of the molded object of Claim 4 characterized by the above-mentioned.   The method for producing a molded body according to claim 4, wherein the starch paste raw material used in the step of obtaining the adhesive medium is wheat flour.   A molded article containing one or more substances selected from the group consisting of a pulp-inorganic particle mixture including pulp and inorganic particles, starch paste, wood powder, pulverized coal, and incinerated ash.   The molded body according to claim 7, wherein the pulp-inorganic particle mixture is paper sludge and / or waste paper defibrated material.   The molded article according to claim 7, wherein the starch paste is a starch paste derived from wheat flour obtained by heating the hydrated wheat flour.   The molded article according to claim 7, further comprising titanium oxide powder.   A granular molded article comprising a pulp-inorganic particle mixture containing pulp and inorganic particles, starch paste and pulverized coal.   The granular compact according to claim 11, wherein the pulverized coal includes charcoal powder carbonized at 300 ° C to 750 ° C.   Furthermore, wood powder is included, The granular molded object in any one of Claim 11 or 12 characterized by the above-mentioned.   Furthermore, ferrite powder is included, The granular molded object in any one of the Claims 11 thru | or 13 characterized by the above-mentioned.   The granular molded body according to any one of claims 11 to 14, further comprising titanium oxide powder.   The bedding which filled the air-permeable bag with the content WHEREIN: The said content contains the granular molded object in any one of Claims 11 thru | or 15.   A pillow in which a filling is filled in a breathable bag, wherein the filling includes the granular molded body according to any one of claims 11 to 15.   The air purification filter which hold | maintained the adsorption agent inside the air permeable frame, The said adsorption agent contains the granular molded object in any one of Claim 11 thru | or 15, The air purification filter characterized by the above-mentioned.

Images