JP7450927B2 - Granular filler for bedding, bedding using the same, and method for producing granular filler for bedding - Google Patents

Description

The present invention relates to a granular filler for bedding, bedding using the same, and a method for producing the granular filler for bedding. Specifically, when placed in bedding such as pillows, the shape of the bedding changes easily to suit the usage pattern of the user, making it easy to use, having excellent mold-proofing properties, and being resistant to unpleasant odors due to long-term use. The present invention relates to a granular filler, bedding using the same, and a method for producing a granular filler for bedding.

Various attempts have been made to use various natural materials such as wood chips and buckwheat husks as fillers for pillows and other bedding. Such bedding is said to have excellent usability by making use of natural materials, and one example is "Pillow and Particulate Filler for Pillow" disclosed in Patent Document 1.

The above-mentioned conventional pillow includes a cloth-like or net-like bag, and the bag is filled with a particulate filler, and the particulate filler is made of one or more types of paulownia wood selected from tetrahedrons, triangular prisms, and pyramids. It is characterized by consisting of polyhedral particles made of. This makes it possible to easily change the height of a necessary part of the pillow by utilizing the fluidity of the particulate filler, and also to stably maintain a comfortable shape for sleeping.

JP2008-99867A

However, pillows using conventional particulate fillers have the following problems.
That is, since the particulate filler is plain wood, the frictional force when the particulate fillers come into contact with each other inside the pillow is relatively large, and it cannot be said that the mutual lubricity is good.

Therefore, as mentioned above, the pillow's deformability, which allows you to easily change the height of the necessary part of the pillow, is not actually that good, and once it has been shaped, it remains strong as it is. There is still a tendency to be left behind.

Furthermore, since the particulate filler is plain wood, the moisture content of the particulate filler is likely to be maintained at a high level. As a result, even if the particulate filler is made of paulownia wood, which has excellent moisture absorption and desorption properties, it is difficult to prevent mold from forming on the particulate filler. As a result, this mold may cause a strange odor, cause health problems for the user, or even if mold is not present, the user's body odor may transfer over time and cause a strange odor. There was a high possibility that the pillow would become unusable.

The present invention was devised in view of the above points, and when placed in bedding such as a pillow, the shape of the bedding changes easily to suit the usage pattern of the user, making it easy to use and mold-proof. An object of the present invention is to provide a granular filler for bedding which is excellent in quality and is less likely to generate unpleasant odors due to long-term use, bedding using the same, and a method for producing the granular filler for bedding.

(1) In order to achieve the above object, the granular filler for bedding according to the present invention is made of wood material and formed into a desired shape, and charcoal powder is generated on the surface side due to friction with other granular filler for bedding. A carbonized layer of a required depth is formed so that there is no carbonization or the carbonization is difficult to occur, and a heat treatment section is provided in the deep part surrounded by the carbonization layer, which is heated at a predetermined temperature without causing carbonization. ing.

The granular filler for bedding has a carbonized layer formed on the surface side, and the carbonized layer has sufficient hardness so that it does not generate charcoal powder or is treated to hardly generate charcoal powder. There is. As a result, in the granular filler for bedding, the surface of the carbonized layer has good lubricity. In particular, since the frictional force when the granular fillers for bedding are brought into contact with each other is small, they have excellent mutual lubricity.

Therefore, when an appropriate amount of granular filler for bedding is put into or packed into bedding, the granular filler for bedding can move relatively freely while contacting each other inside the bedding, and the granular filler for bedding can move relatively freely inside the bedding. It has excellent properties, and the shape of the bedding can be easily changed to suit the user's usage pattern.

Note that although the shape of the bedding can easily change to suit the usage pattern of the user, it does not mean that the granular fillers for bedding will slide over each other without any resistance, and naturally they also have a certain shapeability. Combined with the above-mentioned good deformability, it is easy to use.

In addition, the carbonized layer does not generate charcoal powder or hardly generates charcoal powder even when it comes into contact with other granular fillers for bedding, but it has the characteristics of porous charcoal and has good moisture absorption and desorption properties. Has odor.

In other words, most of the water in the granular filler for bedding evaporates when it is heated, so the granular filler for bedding has good moisture absorption and desorption properties, making it difficult for mold to form. Naturally, health damage is also less likely to occur. Furthermore, by providing good deodorizing properties, even when the bedding is used for many years, it is possible to suppress the occurrence of foreign odors in the bedding due to adsorption of the user's body odor.

Note that the deep heat-treated portion is heated by burning the surrounding portion that will become the carbonized layer, and the wood fibers shrink as moisture evaporates. When the wood is cooled down to room temperature due to heat radiation, it becomes considerably harder than plain wood. This increases the strength of each particulate filler for bedding and improves the durability of the particulate filler for bedding.

(2) The granular filler for bedding of the present invention can also have a configuration in which the overall shape is substantially polyhedral.

In this case, when the granular fillers for bedding come into contact with each other and slide, surface contact tends to occur instead of point contact. This tends to generate frictional force between the granular fillers for bedding that can contribute to the necessary and sufficient shapeability of the bedding.

(3) The granular filler for bedding of the present invention can also have a configuration in which the overall shape is approximately cubic.

In this case, when the granular fillers for bedding come into contact with each other and slide, surface contact tends to occur instead of point contact. This tends to generate frictional force between the granular fillers for bedding that can contribute to the necessary and sufficient shapeability of the bedding.

In addition, the granular filler for bedding is almost cubic, so despite its voluminous shape, it has a relatively small number of faces compared to a solid with multiple planes, and moreover, adjacent faces form right angles. There is. This makes it possible to manufacture chips relatively easily and efficiently, for example by making a chip by simply cutting the material multiple times in a straight line. Furthermore, since the heat-treated portion can be secured in a sufficient size, it is also possible to further increase the strength of each component.

(4) The granular filler for bedding of the present invention can also be configured such that the portions corresponding to each corner and each side are rounded.

In this case, when the granular filler for bedding comes into contact with other granular filler for bedding, in addition to the fact that the surface is naturally excellent in slipperiness, they are less likely to get caught with each other, so the flow when placed in the bedding is reduced. better in sex. Furthermore, the generation of charcoal powder can also be further suppressed.

(5) In order to achieve the above object, the bedding according to the present invention has a bag body for keeping the shape of the bedding in a predetermined shape inside, and the bag body is formed with a wood material into a desired shape. , a carbonized layer of a required depth is formed on the surface side to prevent or prevent the formation of charcoal powder due to friction with other granular fillers for bedding, and the deep part surrounded by the carbonized layer is filled with an appropriate amount of granular filler for bedding, which is provided with a heat treatment section that is heated at a predetermined temperature without being carbonized.

The bedding of the present invention can be made into bedding in a predetermined shape, such as a pillow, by filling an internal bag with an appropriate amount of granular filler for bedding.
The granular filler for bedding that is filled into bedding has a carbonized layer formed on the surface side, and the carbonized layer is treated to prevent or hardly generate carbon powder and has sufficient hardness. It has a certain quality. As a result, in the granular filler for bedding, the surface of the carbonized layer has good lubricity. In particular, since the frictional force when the granular fillers for bedding are brought into contact with each other is small, they have excellent mutual lubricity.

Therefore, when an appropriate amount of granular filler for bedding is put into or packed into bedding, the granular filler for bedding can move relatively freely while contacting each other inside the bedding, and the granular filler for bedding can move relatively freely inside the bedding. It has excellent properties, and the shape of the bedding can be easily changed to suit the user's usage pattern.

Note that although the shape of the bedding can easily change to suit the usage pattern of the user, it does not mean that the granular fillers for bedding will slide over each other without any resistance, and naturally they also have a certain degree of shaping ability. Combined with the above-mentioned good deformability, it is easy to use.

In addition, the carbonized layer does not generate charcoal powder or hardly generates charcoal powder even when it comes into contact with other granular fillers for bedding, but it has the characteristics of porous charcoal and has good moisture absorption and desorption properties. Has odor.

In other words, most of the water in the granular filler for bedding evaporates when it is heated, so the granular filler for bedding has good moisture absorption and desorption properties, making it difficult for mold to form. Naturally, health damage is also less likely to occur. Furthermore, by providing good deodorizing properties, even when the bedding is used for many years, it is possible to suppress the occurrence of foreign odors in the bedding due to adsorption of the user's body odor.

Note that the deep heat-treated portion is heated by burning the surrounding portion that will become the carbonized layer, and the wood fibers shrink as moisture evaporates. When the wood is cooled down to room temperature due to heat radiation, it becomes considerably harder than plain wood. This increases the individual strength of the granular filler for bedding, which in turn improves the durability of bedding such as pillows using the granular filler for bedding.

(6) In order to achieve the above object, the method for producing a granular filler for bedding according to the present invention includes stirring a required amount of white wood chips, which are wood materials, inside a stirrer, and the chips being stirred. an ignition step in which the entire chip is ignited and burned, and the ignition is repeated so that the entire chip is ignited; a combustion step in which the entire chip is burned while stirring so that at least the surface of the chip is carbonized; When the chips have been carbonized to a required depth, a fire extinguishing step is carried out to stop combustion by pouring water over the entire chip, a washing step is to wash the entire chip with water while stirring, and a drying step is to dry the washed chip. Equipped with

In the method for producing a granular filler for bedding according to the present invention, in the ignition process, the required amount of plain wood chips, which are wood materials, are stirred inside the stirrer, so that the chips that come to the surface are constantly replaced. As a result, when the chips being stirred are ignited and burned, it is possible to suppress the occurrence of uneven combustion of individual chips due to continuous combustion of some chips, especially in the initial stage of combustion.

Moreover, by repeating ignition so that the entire chip is ignited, the temperature inside the stirrer gradually rises, and the combustion of the chip continues without igniting again. This makes it possible to burn the entire chip evenly.

Further, in the combustion step, the entire chip is burned while being stirred so that at least the surface of the chip is carbonized, so that the surface of the chip is carbonized to a required depth and a carbonized layer is formed.

Once the necessary carbonization layer has been formed, water is poured over the entire chip in the extinguishing process to stop the combustion, which wets the chip and rapidly lowers the temperature, allowing the surface of the chip to reach the required depth. Able to maintain carbonized state.

Then, in the cleaning process, by washing the entire chip with water while stirring, the relatively fragile parts of the carbonized layer on the surface are scraped away by contact between the chips, and the wood grain appears on the surface. . As a result, an appropriate amount of friction is generated when the bedding filler rubs against other bedding fillers, contributing to appropriate shaping properties of the bedding using the bedding filler.

In the drying process, by drying the washed chips, it can be made sufficiently light, so when the resulting bedding filler is put into bedding as a filler, it can contribute to reducing the weight of the bedding. Furthermore, since the water content of the filler for bedding is considerably low, the generation of mold is suppressed. Furthermore, certain characteristics of the carbonized layer on the surface as porous charcoal are maintained.

(7) The method for producing a granular filler for bedding according to the present invention may have a configuration in which an abrasive is mixed and stirred in the washing step.

In this case, since the abrasive is mixed and stirred, in addition to the chips coming into contact with each other, the abrasive comes into contact with the chips and scrapes the surface of the chips little by little, removing the soot on the carbonized parts of the surface. drop down. Thereby, the surface of the chip can be processed more efficiently.

The present invention provides bedding that, when placed in bedding such as a pillow, easily deforms to suit the usage pattern of the user, making it easy to use, excellent in mildew resistance, and resistant to unpleasant odors due to long-term use. It is possible to provide a granular filler for use in bedding, bedding using the same, and a method for producing a granular filler for bedding.

FIG. 1 is a perspective explanatory view showing a granular filler for bedding according to the present invention. FIG. 2 is a cross-sectional view of a granular filler for bedding. 1 is a perspective explanatory view showing the structure of a pillow which is bedding according to the present invention. It is a perspective explanatory view showing an example of use as a pillow. It is a perspective explanatory view which shows the example of use of other embodiments of a pillow.

Embodiments of the granular filler for bedding and bedding according to the present invention will be described in more detail with reference to FIGS. 1 to 5.

The granular filler A for bedding is made of paulownia wood, which is a wood material, and has a substantially cubic shape. In other words, the part of the granular filler A for bedding that corresponds to each side of the six faces of the cube and the part that corresponds to the eight corners of the cube are slightly rounded (see FIGS. 1 and 2).

In addition, in FIG. 1, not all of the granular fillers A for bedding are approximately cubic, but there are some variations in shape, and there are some that are not cubic, but most are approximately cubic. Moreover, in FIG. 2, the cross-sectional shape is shown by cutting the granular filler material A for bedding so that the cut end is approximately square.

Further, in the present embodiment, the granular filler material A for bedding has a minimum diameter (length of one side) of about 7 mm, although there are some sizes. Note that the shape and particle size of the granular filler for bedding are not limited to these, and may be formed into an appropriate shape and size depending on the type of bedding to be used.

On the surface side of the granular filler material A for bedding, a carbonized layer 1 having a thickness of about 0.5 mm is formed, although there are some variations. The carbonized layer 1 is such that the carbonized part of the paulownia wood does not generate or hardly generates charcoal powder even when it comes into contact with other granular filler A for bedding or due to the friction generated at that time. Even the surface has been treated.

However, a carbonized portion remains in the carbonized layer 1 on the surface of the granular filler A for bedding, and the characteristics of this carbonized portion as porous charcoal are not lost and the characteristics are fully exhibited. can. In addition, since the carbonized layer 1 has been dried and has a low moisture content, the paulownia wood fibers are carbonized and shrink relatively strongly, increasing the hardness compared to the plain wood state. .

Further, a heat-treated portion 2 is formed in a deep portion of the granular filler material A for bedding surrounded by the carbonized layer 1 . The heat treatment part 2 is a part where the paulownia wood is heated to near the ignition point when the carbonized layer 1 is being burned during manufacture, thereby being heated without being burned or carbonized.

Similar to the carbonized layer 1, the heat treated section 2 is dry and has a low moisture content, and the wood fibers of the paulownia wood have also shrunk relatively strongly and the hardness has increased compared to the plain wood state. However, compared to the carbonized layer 1, it is slightly lower.

Note that the carbonized layer 1 and the heat-treated portion 2 have a structure in which the material gradually changes from one to the other at the boundary in the thickness direction, so it is difficult to integrate the carbonized layer 1 and the heat-treated portion 2. This is remarkable, and the carbonized layer 1 does not fall off easily. As described above, the granular filler material A for bedding is lighter than plain wood in a dry state, yet has sufficient strength compared to plain wood.

Here, with reference to FIG. 3, a pillow 3, which is bedding filled with a granular filler for bedding, will be described. The pillow 3 has a pillow cover 30 made of cloth. Inside the pillowcase 30, a net 31, which is a bag having a predetermined mesh size and containing a large number of the granular fillers A for bedding, is housed. The pillow cover 30 and the net 31 are both equipped with fasteners (numerals omitted) so that they can hold items inside.

Next, a method for manufacturing the granular filler A for bedding will be explained. The chip used as the material is a paulownia plain wood chip, and in this embodiment, it is a cubic grain with a side of 9 mm. In this embodiment, 1.4 kg of this chip was prepared and subjected to the following processing.

In this embodiment, a drum-rotating electric concrete mixer is used as the agitator. The drum capacity is 60L, the effective stirring capacity is 30L, and the rotation speed can be adjusted up to 40 rpm. The drum capacity, effective stirring capacity, and rotational speed are not limited to these, and can be appropriately standardized depending on the scale of production. Note that the paint inside the drum is burnt out so as not to affect the quality of the granular filler for bedding produced.

[1. Preliminary stirring process]
1.4 kg of chips were placed inside the drum of the stirrer, and the drum was rotated at 20 rpm to stir the chips. After confirming that the chips were being stirred stably without spilling from the drum, ignition of the chips was started.

[2. Ignition process]
When igniting, a switch was operated to temporarily stop the rotation of the drum, and a burner was used to emit a flame to the stationary chips, igniting them. When the chips were ignited, the drum started rotating to stir the chips, and then the drum rotation was immediately stopped and the burner was used to ignite the chips. In this way, the ignition of the chips with the drum stopped and the subsequent short-time stirring were alternately repeated.

[3. Combustion process]
As the above-mentioned ignition and stirring were repeated, the temperature of the chips and inside the drum rose, and the number of chips with plain wood surfaces gradually decreased, and the entire chips were ignited. During stirring, most of the chips visible inside the drum turned into chips with burnt surfaces, and continued to self-combust. In this state, ignition with the burner was stopped, and while the chips were continued to be stirred, visual inspection was continued to check the degree of burning of the chips, that is, the progress of carbonization on the surface.

[4. Fire extinguishing process]
Once the progress of carbonization was determined to be appropriate, water was poured over the entire chip at once using a hose to extinguish the fire. After the fire is extinguished, water is continued to be sprayed, and the chips are completely immersed in water in the drum and cooled down in a short time, allowing the chips to maintain a state where the surface is carbonized to the required depth.

[5. Washing process]
Transfer the water and chips in the drum to another container, filter out the chips, transfer to the stirrer drum again, add an appropriate amount of water, and mix in an appropriate amount of abrasive material. Then, the opening of the drum is closed with a net having openings large enough to prevent the chips from leaking out, and water is poured into the drum from outside the drum through the net, and the drum is stirred at a rotational speed of 20 rpm.

In this way, by washing the entire chip with water while stirring, the relatively brittle part of the carbonized part on the surface is scraped off by the contact between the chips, the soot is removed, and the wood grain appears on the surface. .

After stirring for a predetermined time and the water inside the drum becomes clean, the chips are filtered out. As the abrasive material, a so-called sponge abrasive material or the like is preferable in terms of not easily damaging the chip, but the present invention is not limited to this, and various existing abrasive materials can be used as appropriate.

[6. Drying process]
The filtered chips are air-dried in the sun for a specified period of time. Alternatively, it can also be dried using various dryers. The degree of drying is, for example, about 10% in terms of moisture content, but since bedding filler A, which is made of paulownia wood with a roasted surface, has excellent moisture absorption and desorption properties, the humidity naturally approaches that of the surrounding atmosphere. , there are no particular limitations.

The length of working time in each of the above steps depends on various factors such as temperature, humidity, and the skill level of the worker, so the working time is not determined uniformly, and workers can adjust it accordingly. The manufacturing work will be carried out while doing the following.

(effect)
The effects (including properties, functionality, etc.) of the granular filler material A for bedding produced by the above method will be explained.
The granular filler A for bedding has a carbonized layer 1 formed on the surface side, and the carbonized layer 1 has been sufficiently washed so that no charcoal powder is generated or is treated to be less likely to generate charcoal powder. Since it is sufficiently dry, the surface hardness is high.

In order to measure the surface hardness, the following test was conducted.
[Brinell hardness test 1]
・Test specimen Burnt paulownia grains (granular filler for bedding A)
・Number of test pieces: 1 ・Test method
JIS Z2101:2009 Wood test method Refer to measurement of surface hardness (Brinell hardness) Measurements were performed at five arbitrary locations on the test piece.
Press-in speed: 0.5mm/min

[Brinell hardness test 2]
・Test specimen: paulownia white wood ・Number of test pieces: 1 ・Test method
JIS Z2101:2009 Wood test method Refer to measurement of surface hardness (Brinell hardness) Measurements were performed at five arbitrary locations on the test piece.
Press-in speed: 0.5mm/min

(Consideration)
As can be seen from Table 1 of Brinell Hardness Test 1 and Table 2 of Brinell Hardness Test 2, the surface hardness (N) of the baked paulownia grains (granular filler for bedding A) has an average value of 3.8. It was harder than the average surface hardness (N) of paulownia plain wood, which was 3.2.

Moreover, as a result, the surface of the carbonized layer 1 of the granular filler material A for bedding has good lubricity. In particular, since the frictional force when the granular fillers A for bedding are brought into contact with each other is small, the mutual lubricity is excellent.

In order to measure surface friction, the following test was conducted.
[Fiber physical test]
・Test specimen: Baked paulownia grains (granular filler for bedding A), paulownia plain wood, 4 points (dry and wet, respectively) ・Test method: JIS K 7125 Plastic films and sheets - Refer to friction coefficient test method ・Testing device: Co., Ltd. Shimadzu precision universal testing machine AG-5kNX
・Sliding piece: Tester accessory, 63mm x 63mm, 201.9g
・Traveling speed: 100mm/min Traveling distance: 50mm
・Condition of test piece Stretching/drying: Stretching/wetting for 24 hours or more in standard atmosphere (23℃, 50% RH): Wipe the dry test piece with a wet cloth and then immediately measure it. Number of measurements: 2 times

(Consideration)
As can be seen from Table 3, burnt paulownia grains (dried: granular filler for bedding A) have smaller static friction coefficients and dynamic friction coefficients than plain wood (dried), and are superior in slipperiness. Also, the relationship between roasted paulownia (wet) and plain wood (wet) used for comparison is the same, with roasted paulownia grains (wet) having lower static and dynamic friction coefficients and superior lubricity than plain wood (wet). ing.

Therefore, when an appropriate amount of granular filler A for bedding is put into or stuffed into the pillow 3, which is the bedding, the granular filler A for bedding is relatively free while contacting each other inside the pillow 3. The pillow 3 has excellent fluidity, and the shape of the pillow 3 shown in FIG. 4 can be easily changed to suit the usage pattern of the user. Further, a pillow 3a of a different form shown in FIG. 5 is a wide rectangular pillow that can be made higher by rounding one end side.

Although the shape of the bedding such as the pillow 3 is easily deformed to suit the usage pattern of the user, this does not mean that the granular filler material A for bedding will slide against each other without any resistance, and as mentioned above, the shape of the bedding may change depending on the usage pattern of the user. It also has a certain degree of shapeability, such as the appearance of the above properties, making the bedding easy to use, coupled with the above-mentioned good deformability.

In addition, the carbonized layer 1 does not generate charcoal powder even when the granular filler A for bedding comes into contact with other granular filler A for bedding, or does not generate charcoal powder easily, but has the characteristics of porous charcoal. It has good moisture absorption and deodorization properties.

In order to confirm moisture absorption and desorption properties, the following test was conducted.
[Moisture absorption and release test 1]
・Test specimen Burnt paulownia grains (granular filler for bedding A)
・Test piece amount: Approximately 500g
-Test method 1. Humidify the specimen at 40°C and 30% RH for 17 hours, and measure the mass (W) of the specimen.
2. Absorb moisture at 40° C. and 90% RH, and measure the mass (W) of the specimen after 2, 4, 8, and 24 hours.
3. 24 hours after the start of moisture absorption, the test conditions are changed to 40°C.
4. Allow the specimen to release moisture at 40° C. or below, and measure the mass (W) of the specimen after 2, 4, 8, and 24 hours.
5. Let the test specimen be completely dry, and measure the mass (W) of the test specimen.
6. Calculate the moisture content at each time using the following formula.
Moisture content (%) = ((W-W0)/W0) x 100

[Moisture absorption and release test 2]
・Test specimen Shiraki paulownia grains ・Test piece amount approximately 500g
-Test method 1. Humidify the specimen at 40°C and 30% RH for 17 hours, and measure the mass (W) of the specimen.
2. Let the specimen absorb moisture at 40° C. and 90% RH, and measure the mass (W) of the specimen after 2, 4, 8, and 24 hours.
3. 24 hours after the start of moisture absorption, the test conditions are changed to 40°C.
4. Allow the specimen to release moisture at 40° C. or below, and measure the mass (W) of the specimen after 2, 4, 8, and 24 hours.
5. Let the test specimen be completely dry, and measure the mass (W) of the test specimen.
6. Calculate the moisture content at each time using the following formula.
Moisture content (%) = ((W-W0)/W0) x 100

(Consideration)
As can be seen from Table 4 for burnt paulownia grains and Table 5 for white paulownia grains, in terms of hygroscopicity, between burnt paulownia grains and white paulownia grains, white paulownia grains absorb more moisture, and under each condition The moisture content remained higher than that of the grains. Incidentally, it was found that burnt paulownia grains also absorb moisture well, although they were slightly inferior to plain wood paulownia grains. In addition, in terms of moisture release properties, the initial moisture content of burnt paulownia grains was slightly lower than that of white wood grains, but it remained lower than that of white wood grains even after 2 hours had elapsed.

In other words, most of the moisture in the granular filler A for bedding evaporates when it is heated, and it is sufficiently dried after washing, so the granular filler A for bedding has good moisture absorption and desorption properties. Combined, mold is less likely to occur, and health damage caused by mold is naturally less likely to occur. Furthermore, by providing good deodorizing properties with the carbonized layer 1, even when the bedding such as the pillow 3 is used for many years, it is possible to suppress the generation of foreign odors in the bedding due to adsorption of the user's body odor.

The following tests were conducted to confirm the antifungal properties.
[Mold analysis results]
・Test specimen Burnt paulownia grains (granular filler for bedding A)
・Conditions: Used in a pillow for one year ・Method: Potato dextrose agar plate culture method

(Consideration)
As can be seen from Table 6, no mold was observed on the burnt paulownia grains. Regarding the factors that suppress the generation of mold, in addition to the low moisture content of the granular filler A for bedding, the effect of far infrared rays and the effect of negative ions generated from the granular filler A for bedding suppress the generation of mold. It is also possible that it is suppressing.

Note that the deep heat-treated portion 2 surrounded by the carbonized layer 1 of the granular filler A for bedding is heated by burning the surrounding portion that will become the carbonized layer 1, and the wood is heated by evaporation of moisture. The fibers have shrunk (see Figure 2). When the wood is cooled down to room temperature due to heat radiation, it becomes considerably harder than plain wood. This increases the strength of each particulate filler A for bedding, and improves the durability of the particulate filler A for bedding.

As described above, when the present invention is placed in bedding such as the pillows 3 and 3a, the shape of the bedding changes easily to suit the usage pattern of the user, making it easy to use, excellent in mold-proofing properties, and resistant to aging. A granular filler A for bedding that does not easily generate unpleasant odors when used, bedding such as pillows 3 and 3a using the granular filler A for bedding having such functionality, and a method for producing the granular filler A for bedding. can be provided.

The terms and expressions used in this specification and claims are for descriptive purposes only and are not intended to be limiting in any way. There is no intention to exclude terms or expressions that are equivalent to some of them. Further, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

A Granular filler for bedding 1 Carbonized layer 2 Heat treated section 3 Pillow 30 Pillow cover 31 Net

Claims (6)

It is made of a wood material, and a carbonized layer of a required depth is formed on the surface side so that charcoal powder does not or is difficult to form due to friction with other granular fillers for pillows , and the carbonized layer A granular filler for pillows is provided with a heat treatment part heated at a predetermined temperature without carbonization in the deep part surrounded by,
Its overall shape is approximately polyhedral or approximately cubic, and each corner and each side are rounded, and
Wood grain appears on the surface of the carbonized layer.
Granular filler for pillows . It has a bag inside to keep the shape of the pillow in a predetermined shape, the bag is made of a wood material, and whether charcoal powder is not generated on the surface side due to friction with other granular filler for pillows, Alternatively, a carbonized layer having a required depth to prevent carbonization from occurring is formed, and a heat-treated part heated at a predetermined temperature without causing carbonization is provided in a deep part surrounded by the carbonized layer. A pillow filled with an appropriate amount of granular filler,
The overall shape of the granular filler for pillows is approximately polyhedral or approximately cubic, and the portions corresponding to each corner and each side are rounded,
Wood grain appears on the surface of the carbonized layer.
pillow . an ignition step of stirring a required amount of plain wood chips, which are wood materials, inside a stirrer, igniting and burning the chips being stirred, and repeating ignition so that the entire chips are ignited;
a combustion step of burning the entire chip while stirring so that at least the surface of the chip is carbonized;
When the surface of the chip has been carbonized to a required depth, an extinguishing step of spraying water over the entire chip to stop combustion;
A washing step of washing the entire chip with water while stirring, and by contacting the chips with each other, the corners and sides of the chip are rounded, and the wood grain appears on the surface of the chip;
and a drying step of drying the washed chip.
Method for producing granular filler for pillows . In the cleaning step, brittle portions of the carbonized portions on the surface of the chip are removed.
The method for producing a granular filler for pillows according to claim 3 . The chip used as the material uses cubic grains.
The method for producing a granular filler for pillows according to claim 3 or 4 . In the cleaning step, abrasive material is mixed and stirred.
The method for producing a granular filler for pillows according to claim 5 .

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