A regenerated leather, a regenerated leather toy and a preparation method thereof

Abstract

The present invention relates to a regenerated skin, a regenerated skin toy and a preparation method thereof. The preparation is carried out through the following steps: treating animal skin to obtain a slurry; dehydrating, shaping and drying the slurry to obtain the regenerated skin; spraying a mixed liquid containing animal viscera and water on the surface of the regenerated skin; and drying the regenerated skin to obtain the dried regenerated skin. The palatability, digestibility and playability of the product are improved.

Description

Technical Field

[0001] The present invention relates to the field of pet food, and particularly to a regenerated skin, a regenerated skin toy and a preparation method thereof. Background Art

[0002] Animal skin has good mechanical properties and can also be used in pet food, so it is widely used in making pet chewing products. However, the palatability of pet chewing products made of pure animal skin is poor at present. To solve this problem, the common practice is to add animal viscera during production. The traditional method of adding animal viscera is to purchase processed animal viscera powder from manufacturers as raw materials and mix it with animal skin for production. This method requires a large amount of animal viscera and is prone to uneven mixing during mixing, resulting in poor palatability.

[0003] In addition, for animal viscera powder, in order to exert its flavor, manufacturers will use hydrolysis or enzymatic hydrolysis technology. Some harmful substances may be generated during the disassembly process, and the strong acids and bases used for hydrolysis or the enzyme preparation carriers do not belong to natural ingredients. Although the acid-base components will be neutralized and the enzyme preparations will be inactivated finally, there will be a small amount of residues, which pose a potential hazard to the health of pets. Summary of the Invention

[0004] Based on this, it is necessary to provide a regenerated skin, a regenerated skin toy and a preparation method thereof for the above technical problems.

[0005] The inventor obtains a slurry by grinding animal skin and other methods, then obtains regenerated skin through dewatering, shaping and drying, and then sprays a mixed solution prepared by crushing fresh chicken liver and water onto the surface of the regenerated skin, avoiding the residue of chemical reagents, having better nutrition and taste, better palatability, and effectively reducing the dosage of animal viscera. Specifically,

[0006] One aspect of the present invention relates to a preparation method of a regenerated skin, which includes the following steps:

[0007] 1) Treat the animal skin to obtain a slurry;

[0008] 2) Dewater, shape and dry the slurry to obtain regenerated skin;

[0009] 3) Spray a mixed solution containing animal viscera and water onto the surface of the regenerated skin;

[0010] 4) Dry the regenerated skin to obtain the dried regenerated skin;

[0011] Among them, the drying method in step 2) is preferably drying by baking, and the drying method in step 4) is preferably air drying.

[0012] Between step 3) and step 4), it further includes putting the sprayed regenerated leather into a sealed container and storing it for more than 2 hours to make the moisture in all parts of the regenerated leather uniform and the animal viscera penetrate into the regenerated leather; the sealed container is preferably a sealed bag.

[0013] Meanwhile, between step 2) and step 3), it further includes humidifying and softening the regenerated leather, and cutting the softened regenerated leather into required sizes to meet the size requirements and facilitate the subsequent spraying step.

[0014] Among them, the animal skin in step 1) is cowhide; the mixed liquid in step 3) is prepared by mixing the paste formed by crushing animal viscera through equipment with water, the animal viscera is chicken liver, and the weight ratio of animal viscera in the mixed liquid is 3-7%.

[0015] Furthermore, the slurry obtained in step 1) is obtained by soaking the animal skin in 5-8 times of water for 2-3 hours and then grinding it through a pulp grinder; in the dried regenerated leather in step 4), the weight ratio of the regenerated leather is 99%-99.9%, and the weight ratio of the animal viscera is 0.1%-1%.

[0016] On the other hand, the present invention relates to a regenerated leather prepared by the above preparation method of the present invention.

[0017] On another aspect, the present invention relates to a pet product made of the regenerated leather of the present invention.

[0018] On still another aspect, the present invention relates to a preparation method of a regenerated leather toy, which includes the following steps:

[0019] 1) Treat the animal skin to obtain a slurry;

[0020] 2) Remove water, form, and dry the slurry to obtain regenerated leather;

[0021] 3) Spray a mixed liquid containing animal viscera and water on the surface of the regenerated leather;

[0022] 4) Press the regenerated leather into a toy shape and dry it to obtain a regenerated leather toy.

[0023] Among them, the drying method in step 2) is preferably drying by baking, and the drying method in step 4) is preferably air drying.

[0024] Among them, between step 3) and step 4), it further includes putting the sprayed regenerated leather into a sealed container and storing it for more than 2 hours to make the moisture in all parts of the regenerated leather uniform.

[0025] Among them, between step 2) and step 3), it further includes humidifying and softening the regenerated leather and cutting the softened regenerated leather into required sizes.

[0026] Among them, the animal skin described in step 1) is cowhide, and the mixed liquid described in step 3) is prepared by pulverizing animal internal organs through equipment to form a paste and mixing it with water. The animal internal organs are chicken livers, and the weight ratio of animal internal organs in the mixed liquid is 3-7%, preferably 5%.

[0027] Among them, the slurry obtained in step 1) is obtained by soaking the animal skin in 5-8 times of water for 2-3 hours and then grinding it through a pulp grinder; in the regenerated skin toy after drying in step 4), the weight ratio of the regenerated skin is 99%-99.9%, and the weight ratio of the animal internal organs is 0.1%-1%.

[0028] Another aspect of the present invention relates to a regenerated skin toy prepared by the above preparation method of the present invention.

[0029] In the present invention, except for water, forming, and drying, the slurry can be realized by pouring the animal skin pulp onto a mesh sheet, pressing out the water with a water press, and then drying it in a drying room.

[0030] In the present invention, the mixed liquid can be obtained by crushing fresh internal organs, then forming a paste through an ultra-fine pulp grinder, and then mixing it evenly with water.

[0031] In the present invention, after obtaining the regenerated skin through steps 1) and 2), by dispersing and reorganizing, the toughness of the reorganized skin decreases, making it easier for pets to chew. And because the fibers of the skin are dispersed, saliva, digestive juices, etc. are more likely to mix with the skin fibers, which is beneficial to digestion and absorption.

[0032] In the present invention, the spraying can be realized by using a high-pressure spraying device to evenly spray the mixed liquid on the surface of the regenerated skin.

[0033] In an embodiment of the present invention, the process flow is as follows: cowhide soaking → pulping → pressing the skin to remove water → drying → spraying chicken liver → mold pressing and cutting → air drying.

[0034] By implementing the above solutions of the present invention, the following beneficial effects can be obtained:

[0035] 1. During the production process, no chemical reagent treatment is required, there is no chemical residue, and the obtained regenerated skin products are healthier.

[0036] 2. By spraying and adding fresh animal internal organs, the palatability of the regenerated skin products is improved, avoiding the loss of flavor of the internal organs powder during the processing process and the decrease in palatability caused by uneven addition due to equipment, etc. during the mixing and coating processes. The amount of animal internal organs required is significantly reduced.

[0037] 3. The sealing treatment enables the flavor of the animal internal organs to be well combined with the regenerated skin, and the animal internal organs penetrate evenly into the interior of the regenerated skin.

[0038] 4. After forming the animal skin into a slurry and undergoing treatment, the regenerated skin can be more easily absorbed by pets, providing rich nutritional value for pets. Moreover, the formation of shapes through pressing increases the playability and promotes the interaction between pets and their owners. The obtained regenerated skin and the addition of animal internal organs by spraying can cooperate with each other, further improving the penetration effect of animal internal organs and further enhancing the palatability of the product. Detailed implementation manners

[0039] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0040] Embodiment 1

[0041] This embodiment provides a method for preparing regenerated skin, including:

[0042] 1) Soak the crushed cowhide particles in 6 times the amount of clear water for 2.5 hours;

[0043] 2) Grind the soaked crushed cowhide particles through a pulp grinder to obtain cowhide pulp;

[0044] 3) Pour the cowhide pulp onto a mesh sheet, use a water press to press out the moisture, and place it in a drying room for drying and reserve to obtain cowhide regenerated skin;

[0045] 4) Place it in a humidifying room to humidify and soften. After softening, cut it into skin pieces of 15 cm * 15 cm, with the skin piece thickness of 2 - 3 mm. Spray a mixed liquid of chicken liver paste and water on the surface. The weight ratio of chicken liver in the mixed liquid is 5%. Spraying makes the weight ratio of each component of the regenerated skin (excluding water): regenerated skin 99.8%, chicken liver 0.2%;

[0046] Preparation method of the mixed liquid: Stir and crush fresh chicken liver, and through an ultra - crushing pulp grinder, make the chicken liver into a delicate chicken liver paste (as long as the spray equipment can spray evenly), and mix the chicken liver paste and water evenly;

[0047] Spraying method: Evenly spray the mixed liquid after mixing on the surface of the regenerated skin through a high - pressure spray device;

[0048] 5) Place the sprayed regenerated skin in a sealed container and store it for 3 hours to make the moisture in each part of the regenerated skin uniform and the chicken liver penetrate into the regenerated skin.

[0049] 6) Air - dry the regenerated skin.

[0050] Example 2

[0051] This example provides a method for preparing a regenerated leather toy, including:

[0052] 1) Soak the crushed cowhide particles in 6 times the amount of clear water for 2.5 hours;

[0053] 2) Grind the soaked crushed cowhide particles through a pulping machine to obtain cowhide pulp;

[0054] 3) Pour the cowhide pulp onto a mesh sheet, use a water press to squeeze out the water, and place it in a drying room to dry for later use to obtain regenerated cowhide;

[0055] 4) Put it into a humidifying room to humidify and soften it. After softening, cut it into leather pieces of 15 cm * 15 cm. The thickness of the leather pieces is 2 - 3 mm. Spray a mixed solution of chicken liver paste and water on the surface. The weight ratio of chicken liver in the mixed solution is 5%. Spray to make the weight ratio of each component of the regenerated leather (excluding water): regenerated leather 99.8%, chicken liver 0.2%;

[0056] Preparation method of the mixed solution: Stir and crush fresh chicken liver, and pass it through a super - crushing pulping machine to make the chicken liver into a delicate chicken liver paste (as long as the spraying equipment can spray evenly), and mix the chicken liver paste and water evenly;

[0057] Spraying method: Evenly spray the mixed solution after mixing on the surface of the regenerated leather through a high - pressure spraying device;

[0058] 5) Put the sprayed regenerated leather into a sealed container and store it for 3 hours to make the moisture in the regenerated leather evenly distributed and the chicken liver penetrate into the regenerated leather.

[0059] 6) Press the regenerated leather into a toy shape and dry it to obtain a regenerated leather toy.

[0060] Comparative Example 1

[0061] 1) Soak the crushed cowhide particles in 6 times the amount of clear water for 2.5 hours;

[0062] 2) Grind the soaked crushed cowhide particles through a pulping machine to obtain cowhide pulp, and add chicken liver powder so that the ratio of cowhide to chicken liver powder (weight ratio) = 998:2;

[0063] 3) Pour the cowhide pulp onto a mesh sheet, use a water press to squeeze out the water, and place it in a drying room to dry for later use to obtain regenerated cowhide;

[0064] 4) Put it into a humidifying room to humidify and soften it. After softening, cut it into leather pieces of 15 cm * 15 cm. The thickness of the leather pieces is 2 - 3 mm;

[0065] 5) Dry the regenerated leather.

[0066] Comparative Example 2

[0067] 1) Soak the crushed cowhide particles in 6 times the amount of clear water for 2.5 hours;

[0068] 2) Grind the soaked crushed cowhide particles through a pulp grinder to obtain cowhide pulp;

[0069] 3) Pour the cowhide pulp onto a mesh sheet, use a water press to squeeze out the water, and place it in a drying room to dry for later use to obtain regenerated cowhide;

[0070] 4) Place it in a humidifying room to humidify and soften. After softening, cut it into leather pieces of 15 cm * 15 cm. The thickness of the leather piece is 2 - 3 mm. Spray a mixed solution of chicken liver paste and water on the surface. The weight ratio of chicken liver in the mixed solution is 5%. Spray to make the weight ratio of each component of the regenerated leather (excluding water) as follows: regenerated leather 99.8%, chicken liver 0.2%;

[0071] Preparation method of the mixed solution: Stir and crush fresh chicken liver, and pass it through an ultra - fine pulp grinder to make the chicken liver into a delicate chicken liver paste (as long as the spray equipment can spray evenly), and mix the chicken liver paste and water evenly;

[0072] Spraying method: Evenly spray the mixed solution on the surface of the regenerated leather through a high - pressure spray device;

[0073] 5) Air - dry the regenerated leather.

[0074] Palatability evaluation method:

[0075] Conduct experimental tests on the regenerated leather produced in Example 1, Comparative Example 1, and Comparative Example 2.

[0076] Test dogs: 20 beagles.

[0077] Test operation method:

[0078] When the dogs have not eaten yet on the same day, attract them with Example 1 and Comparative Example 1, and Example 1 and Comparative Example 2 respectively. The distance between the example and the comparative example is 1 m. Initially, the distances between the example and the comparative example and the dogs are equal, both 2 m. Record the number of dogs that actively eat, continue for one week, and calculate the average value and the percentage of the total number of dogs. The experimental results are shown in Table 1:

[0079] Table 1

[0080]

[0081] After the above experiment, further record the number of dogs whose eating time exceeds 3 minutes and whose eating object has not changed, calculate the average value and the percentage of the total number of dogs. The experimental results are shown in Table 2:

[0082] Table 2

[0083]

[0084]

[0085] It can be seen from the above data that the palatability is significantly improved by adding fresh chicken liver through spraying compared with the traditional method of adding chicken liver powder, and the sealing treatment enables the flavor of chicken liver to combine well with the regenerated leather, further improving the palatability.

[0086] So far, the embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions of the present invention based on the above description.

[0087] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A method for preparing regenerated leather, comprising the following steps: 1) Treat the animal skin to obtain a slurry; 2) Remove water from the slurry, shape it, and dry it to obtain regenerated leather; 3) Spray a mixture containing animal viscera and water onto the surface of the regenerated leather through a high-pressure spraying device; 4) Dry the regenerated leather to obtain the dried regenerated leather; Between step 3) and step 4), it further includes putting the sprayed regenerated leather into a sealed container and storing it for more than 2 hours to make the moisture in the regenerated leather uniform everywhere and the animal viscera penetrate into the regenerated leather; In step 1), the animal skin is cowhide; in step 3), the mixture is prepared by mixing the animal viscera, which is chicken liver, with water after the animal viscera is pulverized by a device to form a paste, and the weight ratio of the animal viscera in the mixture is 3-7%, and the paste is a paste that can be evenly sprayed by the spraying device.

2. The method for preparing the regenerated skin according to claim 1, wherein, Between step 2) and step 3), it further includes humidifying and softening the regenerated leather, and cutting the softened regenerated leather into required sizes.

3. The preparation method of the regenerated skin according to claim 1, wherein, In step 1), the treatment to obtain the slurry is to soak the animal skin in 5-8 times of water for 2-3 hours and then grind it through a pulp grinder to obtain the slurry; in the dried regenerated leather in step 4), the weight ratio of the regenerated leather is 99%-99.9%, and the weight ratio of the animal viscera is 0.1%-1%.

4. A regenerated leather, which is prepared by the method according to any one of claims 1-3.

5. A pet product, which is made of the regenerated leather according to claim 4.

6. A method for preparing a regenerated leather toy, comprising the following steps: 1) Treat the animal skin to obtain a slurry; 2) Remove water from the slurry, shape it, and dry it to obtain regenerated leather; 3) Spray a mixture containing animal viscera and water onto the surface of the regenerated leather through a high-pressure spraying device; 4) Press the regenerated leather into a toy shape and dry it to obtain a regenerated leather toy; Between step 3) and step 4), it further includes putting the sprayed regenerated leather into a sealed container and storing it for more than 2 hours to make the moisture in the regenerated leather uniform everywhere; The animal viscera is a paste that can be evenly sprayed by the spraying device; In step 1), the animal skin is cowhide; in step 3), the mixture is prepared by mixing the animal viscera, which is chicken liver, with water after the animal viscera is pulverized by a device to form a paste, and the weight ratio of the animal viscera in the mixture is 3-7%, and the paste is a paste that can be evenly sprayed by the spraying device.

7. According to the method for preparing a regenerated leather toy according to claim 6, wherein Between step 2) and step 3), it further includes humidifying and softening the regenerated leather, and cutting the softened regenerated leather into required sizes; In step 1), the treatment to obtain the slurry is to soak the animal skin in 5-8 times of water for 2-3 hours and then grind it through a pulp grinder to obtain the slurry; in the dried regenerated leather toy in step 4), the weight ratio of the regenerated leather is 99%-99.9%, and the weight ratio of the animal viscera is 0.1%-1%.

8. A regenerated leather toy, which is prepared by the method according to any one of claims 6-7.

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