JPS60160825A - Production of litter material for animal excretion - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a method for manufacturing animal excreta litter.

BACKGROUND ART Conventionally, materials made from crushed ores such as zeolite or grasses such as alfalfa have been used as excretory bedding materials for animals, especially pets kept indoors.

Furthermore, as a bedding material made of paper, water-soluble or water-dispersible paper is dispersed in water and then dehydrated and formed into pellets, which is then dried.
No., Japanese Patent Application Publication No. 54-39552, British Patent No. 15132
No. 92).

However, bedding made from zeolite is insoluble in water, so it is practically impossible to dispose of it in a flush toilet after use, and pelleted alfalfa does not absorb water after use. It immediately loses its shape and becomes a slurry, which has the disadvantage of adhering to the animal's feet and contaminating the surrounding area. Furthermore, products made from water-soluble or water-dispersible paper have the disadvantage of requiring a large amount of energy for drying, since the paper dispersed in water is dehydrated and molded before drying.

The present invention has been made in view of the above-mentioned drawbacks of conventional animal excreta bedding materials, and it has been devised to provide an animal excrement bedding material that does not require dehydration during production and does not have the above-mentioned drawbacks during use. The purpose of the present invention is to provide a method for manufacturing excretory bedding.

The present invention will be explained in detail below.

A feature of the present invention is that a paper material used as a raw material is crushed to a moldable degree, or a mixture of this crushed paper material and a high chlorophyll-containing substance is added to a material with a high chlorophyll content.
0% by weight of water is added and mixed, the resulting mixture is extruded into a certain particle shape using a pellet mill, and then dried.

The paper material used as a raw material in the present invention may be any material as long as it is highly water-absorbing, and a wide variety of materials can be used, such as newspapers, scrap paper, and even pulp product waste. therefore,
There is no particular need to use water-soluble or water-dispersible paper unlike the previously proposed bedding materials.

In the present invention, the above-mentioned paper material is pulverized to a size that can be molded, preferably 2IIl/11 or less, or the pulverized paper material is mixed with a high chlorophyll-containing material, such as alfalfa grass, evil grass, locust leaves, etc. A mixture of about 1 to 70% by weight of stems and leaves of Meal or algae such as Spirulina cenedesmus crushed to a size that is easy to mix, and 30 to 40% by weight, preferably about 35% by weight of water. are added and mixed well, and the mixture is extruded as it is using a pellet mill to form it into a certain particle shape.

In addition, for the purpose of facilitating the extrusion molding, thickening agents such as acrylic polymers (sodium polyacrylate), carrageenan, guar gum, sodium alginate, starch acrymite, sodium acrylate polymers, or carboxymethyl cellulose (CMC) are used. ) may be added in an appropriate amount to the papery material or the mixture of the papery material and the high chlorophyll-containing material.

In the bedding material according to the present invention, the absorption rate and absorption rate of excrement (urine) are affected by its specific gravity (when the specific gravity is small, both the absorption rate and the absorption rate improve, but as the specific gravity increases, The specific gravity can be controlled by adjusting the amount of water added within the above range (30 to 40% by weight) and the amount of the thickening material added. Control of the specific gravity of the bedding material is best determined by whether or not the bedding material will be in contact with the animal's feet during use.If the bedding material is used in direct contact with the animal's feet, the control of the excrement Even if the absorption rate or absorption rate decreases, the specific gravity is increased to prevent the bedding material from adhering to the feet and scattering.On the other hand, when the bedding material does not come into direct contact with the feet, the specific gravity is decreased to prevent excrement from being scattered. to increase the absorption rate and absorption rate.

In other words, to decrease the specific gravity of the bedding material, it is better to increase the amount of water added, while to increase the specific gravity, it is better to decrease the amount of water added, but if the amount of water added is less than 30% by weight, the molding after drying will be difficult. As the specific gravity of the material becomes 0.4 or more, the above-mentioned absorption rate and absorption rate as a bedding material are significantly inferior, and the properties of bedding materials made from papery materials are not only impaired, but also
During extrusion molding, clogging occurs in the die, making continuous molding difficult.

On the other hand, if the amount of water added exceeds 40% by weight, the specific gravity of the molded product after drying will be less than 0.2, making the bedding material more likely to be scattered by animal feet during use, and in addition, drying after molding. This requires a large amount of energy, which is disadvantageous in terms of production costs.

In the present invention, the above @rfEMt
The mixture to which water is added is extruded into a fixed particle shape using a pellet mill, but it is also preferable to use a pellet mill that extrudes the mixture from a die using rolls for continuous molding.

Conventionally, various methods are known for extrusion molding, but for example, with screw extrusion, even if the amount of water or glue added to the paper material is changed, the paper material cannot be continuously formed from the goo in a fixed shape. It is difficult to extrude the mold, and the molding machine itself becomes hot due to frictional heat in the die, causing problems such as burning.

Pellet mills that extrude the molded product from a die using rolls include pellet mills (also called pelleters in the latter) that have a cylindrical die or a disc-shaped die, which are used for forming feed and fertilizer. However, in the present invention, these pellet mills can also be used for extrusion molding.

As described above, according to the present invention, animal excrement bedding material is continuously and efficiently produced using paper material as a raw material without requiring dehydration treatment and without contaminating the surrounding area during use. There are possible advantages.

EXAMPLES The present invention will be explained in more detail with reference to Examples below.

Example 1 Paper was ground to 2 m/+ or less using a grinder with both rotating blades and fixed blades suitable for fine grinding, and 0.2% by weight of acrylic polymer paste was added to the paper. After mixing 10% by weight of alfalfa powder (particle size 2+w/m or less) in a kneader,
7m/m of water mixed with 35% of the total weight
Extrusion molding was carried out using a meat chopper, which is a complete screw extruder equipped with a die having a hole diameter of 7 m/-, and a disc pelleter, which is a roll extruder equipped with a die having a hole diameter of 7 m/-.

When produced using a meat chopper, the goo part became clogged after several minutes, and the papery material was burnt, making continuous production impossible.

On the other hand, when produced using a disc pelleter which is a roll extruder, good quality products were obtained continuously.

Example 2 A finely ground mixture similar to that used in Example 1 was mixed with various amounts of water added, and then extruded using a disc pelleter, which is a roll extruder, and the final water content was reduced at 110°C. Table 1 shows the physical properties of the dried molded product that was dried to about 7%.

Table 1 D (Note) Bulk specific gravity was determined by placing the dried molded product in a 1p square and measuring its specific gravity, which was calculated as kg/6.

The water absorption rate is determined by adding 300g of water to approximately 100g of the dried molded product, filtering the water through a net after 10 seconds and 1 minute, measuring the amount of water in the filtrate, and subtracting the amount of filtrate from the amount of water added. The difference is the amount of water absorbed by the molded product, and the molded product 10
It is expressed as the ratio of water absorption weight to 0.

Example 3 Adding 0.5% by weight of glue to the same crushed paper as used in Example 1
was added, further 30% by weight of water was added, and extrusion molded using a pellet mill for feed production using a cylindrical die with a die hole diameter of 6 m/m, followed by drying in the same manner as in Example 2 to produce bedding material.

Applicant: Nippon Pet Food Co., Ltd. Agent Miya 1) Hirotoyo

Claims (1)

[Scope of Claims] 1) 3.
A method for producing an animal excrement bedding material, which comprises adding and mixing 0 to 40% by weight of water, extruding the resulting mixture into a certain particle shape using a pellet mill, and then drying it. 2) The manufacturing method according to claim 1, wherein the mixture to be extruded contains a sizing agent. 3) The manufacturing method according to claim 1 or 2, wherein the mixture is extruded into a predetermined particle shape using a pellet mill that extrudes from a goo using rolls.