WO2019157866A1

WO2019157866A1 - Collagen fiber composite yarn, preparation method therefor, use thereof, and textile article

Info

Publication number: WO2019157866A1
Application number: PCT/CN2018/124036
Authority: WO
Inventors: 韩宏宇
Original assignee: 韩宏宇
Priority date: 2018-02-13
Filing date: 2018-12-26
Publication date: 2019-08-22
Also published as: CN108360102A; CN108360102B

Abstract

A collagen fiber composite yarn, a preparation method therefor, use thereof, and a textile article. The collagen fiber composite yarn comprises leather fibers and other textile fibers, other textile fibers comprising natural fibers and/or chemical fibers, the leather fibers being twisted together with other textile fibers. The leather fibers are made from leather scraps and/or leather waste materials in a physical manner, the fibers having a length of less than 16 mm. The leather staple fibers can be embedded in fiber bundles formed by other fibers. The preparation method solves the problem that the traditional method which prepares leather fibers by means of a combination of a physical manner and a chemical manner is low in efficiency and high in cost; leather fibers less than 16 mm are used to spin yarns, so that the technical bias in the prior art, that the length of spinning fibers should be at least 16 mm, is eliminated, and the collagen fiber composite yarn made from shorter leather fibers has consistent thickness and high quality.

Description

Collagen fiber composite yarn, preparation method and application thereof, and textile product

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201101149816.9, entitled "Collagen Fiber Composite Yarn, Its Preparation Method and Application, and Textile Product", filed on February 13, 2018, the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present disclosure relates to the field of collagen fiber composite yarn technology, and in particular to a collagen fiber composite yarn, a preparation method and application thereof, and a textile product.

Background technique

Leather has been a necessity for people's lives since ancient times. In recent years, due to the development of society, the supply of natural leather has not met the market demand. Some alternative artificial leathers have appeared one after another, but these artificial leathers have health problems and quality problems, and it is difficult to completely replace natural leather; at the same time, more than 70% of the raw materials in the manufacturing process of natural leather are discarded, people are precious to these. Resources have also been recycled. For example, Europe has used a paper-like process to prepare recycled leather hundreds of years ago. The recycled leather products obtained by this method are usually used as auxiliary materials for leather products.

At the beginning of this century, a non-traditional dry process for the production of recycled leather was also introduced. The method used mechanical sewing and defibration of leather trims using metal card clothing or needle boards and carding machines to prepare leather fibers. This method is different from the traditional one. The wet-prepared fiber raw materials, along with the development of this technology, have appeared many patents in this area, such as Chinese patent CN1673430A, name: animal leather collagen fiber spinning yarn and production method; Chinese patent CN 101597865A, name: one A dermal collagen fiber prepared from cadmium secondary waste containing cadmium by-product waste, wherein the technology of Chinese patent CN 101597865A is the most representative, and the technology is made of leather fibers of 20-30 mm length by physical and chemical methods with the trim of blue wet skin. Spinning woven fabrics, leather shoes, clothing and other leather products, but this technology still has many technical problems such as complicated processes, high heat and curling of fibers, and cannot form a large-scale industry.

The reason is that leather is made of animal skin, which is a bundle of fibers consisting of the smallest unit of primary fibrils (1.2 to 1.7 nm in diameter). The bundles are intertwined or interwoven into a special complex. The three-dimensional network structure is difficult to de-fiber into a single-body fiber suitable for textile. Due to various external forces in the preparation of the fiber, the fiber is a coarse, slender, and difficult to separate aggregate state. Even if there is a small amount of leather fiber having a length of 20 to 30 mm, it will be curled into small particles due to high heat in the carding process of spinning, and it is difficult to use it for weaving, even if it is barely spun it out. The yarn also causes the yarn thickness to be uneven, or there are many yarn knuckles, and the recycled leather spun by such yarn has poor flatness. The above method requires a certain physical and chemical treatment to extract a single pure dermal collagen fiber from the leather. It takes more than a dozen complicated and complicated processes to make the fiber from the raw material, which greatly increases the production cost and uses the obtained single fiber. There are also difficulties in spinning, and there is a problem of unevenness in thickness. Products made from it as a raw material are difficult to be accepted by the market because of their high quality and high price.

In addition, the length of the textile-to-fiber length generally recognized in the textile industry must be greater than 16 mm, otherwise it is a non-spun fiber, which needs to be removed in the various processes of spinning, which will cause great waste. Therefore, how to produce a uniform and even collagen fiber composite yarn with leather trim, leather scraps, leather waste and other raw materials, and then use it to prepare leather products with good flatness and quality similar to natural leather, instead of natural leather, to achieve The similar use effect of natural leather, while reducing production costs, is an important task in the field of recycled leather technology.

In view of this, the present disclosure has been made.

Summary of the invention

The purpose of the present disclosure includes providing a collagen fiber composite yarn which is mainly composed of leather short fibers and/or leather waste materials which are physically obtained from leather short fibers and other fibers, and the leather short fibers can be embedded in other fibers. In the fiber bundle, the yarn is obtained, which alleviates the low efficiency and high cost of the traditional leather fiber by the combination of physical and chemical means, and the use of the leather fiber spinning yarn of 16 mm or less also overcomes the prior art for the spinnable fiber. The technical requirement of length above 16mm is required; and the collagen fiber composite yarn has uniform thickness and good quality.

The object of the present disclosure further includes providing a method for preparing a collagen fiber composite yarn, which comprises blending leather trim and/or leather scrap with a physical obtained leather staple fiber with other fibers, and the process is simple, efficient, and short in use. The low cost; the short leather fiber obtained by physical means, and then blended with other fibers, not only makes the process of spinning the yarn with leather fiber easier, but also the spun yarn has uniform thickness and good quality.

The object of the present disclosure also includes the use of a collagen fiber composite yarn prepared by the above-described method for preparing a collagen fiber composite yarn or the above-mentioned collagen fiber composite yarn in the production of a textile product.

It is also an object of the present disclosure to provide a textile product produced by using the above-described collagen fiber composite yarn or the above-described collagen fiber composite yarn preparation method, which has the same advantages as the above-described collagen fiber composite yarn.

In order to achieve the above object of the present disclosure, the following technical solutions are adopted:

According to a first aspect of the present disclosure, a collagen fiber composite yarn comprising a leather fiber and other textile fibers, the other textile fibers comprising natural fibers and/or chemical fibers, the leather fibers being combined with other textile fibers ;

The leather fibers are physically obtained from leather trim and/or leather scraps, and the leather fibers are less than 16 mm in length.

Preferably, the leather fiber is prepared by pulverizing and raising the leather trim and/or the leather scrap to obtain a leather fiber;

Preferably, the leather fibers are prepared by the following method:

First, the leather trim and/or the leather scrap are coarsely pulverized, and then finely pulverized and napped to obtain leather fibers;

Preferably, the leather fibers are prepared by the following method:

The leather trim and/or the leather scrap are coarsely pulverized into small pieces of coarse material, and then velvet and refined by a pulverizing device having a sawtooth hand to obtain a leather fiber.

Preferably, the collagen fiber composite yarn has a length of 15 mm or less of the leather fiber;

Preferably, the length of the leather fibers is below 8 mm.

Preferably, the leather of the leather trim comprises leather and/or reclaimed leather, and/or the leather of the leather scrap comprises dermis and/or regenerated leather;

Preferably, the leather trim comprises a wet blue wet trim and/or a blue wet leather scrap, and/or the leather scrap comprises a wet blue wet trim and/or a wet blue wet scrap;

Further preferably, the wet blue skin is a wet blue skin after neutralization, dyeing, fatliquoring and drying;

Preferably, the blue wet leather fiber is prepared by the following method: neutralizing, dyeing, fatliquoring and drying the blue wet leather trim and/or the blue wet leather scrap, and then pulverizing and raising to obtain a blue wet leather. fiber.

Preferably, the collagen fiber composite yarn, the natural fiber comprises one or a combination of at least two of plant fibers, animal fibers or mineral fibers;

Preferably, the chemical fibers comprise organic fibers and/or inorganic fibers;

Preferably, the organic fiber comprises one or a combination of at least two of viscose fiber, acetate fiber, acetate fiber, copper ammonia fiber, nylon, polyester, acrylic, spandex, vinylon, polypropylene or polyvinyl chloride;

Preferably, the inorganic fibers comprise one or a combination of at least two of carbon fibers, glass fibers or metal fibers.

Preferably, the collagen fiber composite yarn has a leather fiber mass of 8 to 90%, preferably 10 to 80%, more preferably 40 to 60% by mass of the collagen fiber composite yarn.

Preferably, the leather fiber mass is 8%, 9%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90% of the mass of the collagen fiber composite yarn.

Preferably, the natural fibers comprise plant fibers, animal fibers or mineral fibers.

Further preferably, the plant fiber comprises cotton or hemp; the animal fiber comprises wool, cashmere or silk; and the mineral fiber comprises asbestos.

Preferably, the dermis comprises a top layer or a layer of skin.

A method of preparing a collagen fiber composite yarn according to a second aspect of the present disclosure, comprising the steps of:

Blending leather fibers having a length of 16 mm or less with natural fibers and/or chemical fibers to obtain collagen fiber composite yarns; wherein the leather fibers are physically obtained from leather trim and/or leather scraps;

Preferably, the method for preparing the leather fiber comprises the following steps:

a) coarsely pulverizing leather trim and/or leather scraps into small pieces of coarse material;

b) The coarse material is refined and napped with a pulverizing device having a sawtooth hand to obtain a leather fiber having a length of 16 mm or less.

Further preferably, the method for preparing a collagen fiber composite yarn comprises the following steps:

b) the coarse material is refined and napped with a pulverizing device having a sawtooth hand to obtain a leather fiber having a length of 16 mm or less;

c) mixing the leather fiber with the natural fiber and/or the chemical fiber, and combing, drawing and twisting the yarn to obtain a collagen fiber composite yarn.

The application of the collagen fiber composite yarn prepared by the preparation method of the collagen fiber composite yarn or the collagen fiber composite yarn according to the third aspect of the present disclosure in the production of textile products.

A textile product produced by the collagen fiber composite yarn prepared by the method for preparing a collagen fiber composite yarn or a collagen fiber composite yarn according to the fourth aspect of the present disclosure.

Compared with the prior art, the present disclosure has the following beneficial effects:

(1) The collagen fiber composite yarn provided by the present disclosure mainly consists of leather short fibers and/or leather waste materials which are physically obtained from leather short fibers and other fibers, and the leather short fibers can be embedded in other fibers such as natural fibers and/or chemistry. A yarn is formed in the fiber bundle composed of fibers. The short leather fiber is obtained by physically obtaining the trim of the leather and/or the scrap of the leather, which alleviates the defects of low efficiency and high cost of the traditional leather fiber by physical and chemical combination, and the high efficiency of the leather fiber is obtained at the same time. Leather staple fibers are easier to use and form composite yarns with other fibers. These short fibers are embedded in other fibers during the process of forming composite yarns, avoiding the use of traditionally extracted longer collagen fibers for direct spinning and easy crimping. Defects of poor quality. The obtained collagen fiber composite yarn has uniform thickness and good quality. At the same time, it overcomes the technical prejudice of the prior art for spinning yarns of more than 16 mm.

(2) Preparation method of collagen fiber composite yarn of the present disclosure The leather short fiber obtained by physically obtaining leather trim and/or leather scrap is blended with other fibers, and has simple steps, high efficiency and time consumption compared with the conventional method. Short, low cost, in addition, the physical short fiber is obtained first, and then blended with other fibers. These short fibers are embedded in other fibers during the blending process, which is not easy to curl, and the original natural leather fiber The performance is not damaged, and it is blended with other fibers, which not only makes the leather fiber spun yarn easier, but also the spun yarn has uniform thickness and good quality.

(3) The present disclosure realizes the complementary advantages of the leather fiber and other fibers, effectively utilizes the waste natural leather resources, and reduces the cost of producing recycled leather. The obtained collagen fiber composite yarn can be woven into recycled leather having a quality similar to that of natural leather, thereby preparing clothes, shoes, sofa seats, etc., and can also be made into a base fabric conforming to the standard requirements of artificial leather, and the mechanical strength of the product. Compared with the degree of hygienic performance close to natural leather, woven recycled leather can be used as a substitute for natural leather, and is widely used in the field of textile and artificial leather. It is cost-effective and easy to be accepted by consumers. The preparation process is simple and suitable for large Scale production.

Detailed ways

The embodiments of the present disclosure will be described in detail below with reference to the embodiments, but those skilled in the art will understand that the following examples are only intended to illustrate the disclosure, and should not be construed as limiting the scope of the disclosure. Those who do not specify the specific conditions in the examples are carried out according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are conventional products that can be obtained by commercially available purchase.

According to a first aspect of the present disclosure, there is provided a collagen fiber composite yarn comprising a leather fiber and other textile fibers, the other textile fibers comprising natural fibers and/or chemical fibers, and the leather fibers being combined with other textile fibers Together; the leather fibers are physically obtained from leather trim and/or leather scraps, and the leather fibers are less than 16 mm in length.

In the collagen fiber composite yarn provided by the present disclosure, the leather fiber is physically obtained from the leather trim, or the leather fiber is physically obtained from the leather scrap, or the leather fiber is physically formed from the combination of the leather trim and the leather scrap. get.

Leather scraps are not completely consumed in the original planned and designed production materials and in the process of manufacturing the products, and can no longer be used to process the amount of surplus scraps of the finished products under the product. And scraps.

Typical but non-limiting leather trims include both unprocessed chunks of leather and small pieces of leather after cutting and other processes.

Leather scrap refers to the lower leg or waste that is separated as a residue during processing.

The physical mode is not limited, and the leather trim and/or the leather scrap can be treated by a conventional physical method to obtain a leather fiber. Typical but non-limiting physical means such as comminution, napping, and the like.

The length of the leather fiber is below 16mm, for example: 16mm, 15mm, 14mm, 13mm, 12mm, 11mm, 10mm, 9mm, 8mm, 7mm, 6mm, 5mm, 4mm, 3mm, 2mm, 1mm, 0.5mm, 0.25mm, 0.1mm Wait.

Other textile fibers include natural or chemical fibers or a combination of natural and chemical fibers.

Natural fibers include plant fibers, animal fibers or mineral fibers; typical but non-limiting plant fibers are, for example, cotton or hemp; typical but non-limiting animal fibers are, for example, wool, cashmere or silk; typical but not limited The mineral fiber is, for example, asbestos or the like.

The chemical fiber is a fiber having a textile property obtained by using a natural polymer compound or a synthetic polymer compound as a raw material, and a process of preparing a spinning dope, spinning, and post-treatment. Typical but non-limiting chemical fibers include: viscose, acetate, acetate, copper ammonia, nylon, polyester, acrylic, spandex, vinylon, polypropylene, chloro, carbon, fiberglass or metal fibers.

The collagen fiber composite yarn mainly consists of leather short fibers and/or leather scraps which are physically obtained from leather short fibers and other fibers, and the leather short fibers can be embedded in other fibers such as natural fibers and/or chemical fibers. The formation of yarns complements the advantages of leather fibres with natural fibres and/or chemical fibres, which are physically obtained from leather trim and/or leather scraps, making effective use of discarded leather trim and/or Natural leather resources such as leather scraps reduce the cost of raw materials for the production of recycled leather. Moreover, the manner of physically preparing the leather fiber alleviates the inefficiency and high cost of the traditional method of obtaining the leather fiber by physical and chemical combination, and omits many steps, saves time, and is more time-consuming than the traditional physical and chemical combination method. Reduce the process cost of producing recycled leather.

In addition, the fiber obtained by the physical method can better maintain the original performance of the natural fiber, and is not easy to curl during the processing, so the collagen fiber composite yarn spun by it is more uniform in thickness, and the obtained leather short fiber is easier to use. And forming a composite yarn with other fibers. Moreover, in the process of forming the composite yarn, these short fibers are embedded in other fibers, which improves the defect that the long-spinning of the longer collagen fibers which are conventionally refined is liable to curl and cause poor yarn quality. The collagen fiber composite yarn obtained by this method has uniform thickness and better quality. At the same time, it overcomes the technical prejudice that the prior art can spin the yarn for fibers above 16 mm.

In a preferred embodiment, the leather fiber is prepared by pulverizing and raising the leather trim and/or the leather scrap to obtain a leather fiber;

Preferably, the leather fibers are prepared by the following method:

The leather trim and/or the leather scrap are coarsely pulverized into small pieces of coarse material, and then pulverized and refined by a pulverizing device having a sawtooth hand to obtain a leather fiber.

The pulverization is a process in which the material gradually changes from a large block to a small block. After the coarse pulverization, a relatively small coarse material is obtained, and the size is generally 25 mm or less, and fine pulverized to obtain a fine material or a small sized material.

Flocking is a process in which fibers are velveted and refined. Physically, the fines or pieces of leather are further changed into velvet or floc. A further refinement process may be accompanied by the process of lint.

Preferably, the napping process is typically carried out using a comminuting device having a serrated hand.

The fleece is achieved by the frictional contact between the leather and the serrated hand, and after several times of striking and friction flocking, the fibers that meet the requirements after the required napping and refining can be collected for use, and the leather trim and leather scrap are fully crushed and When fully fluffed, it will become flocculent fibers. These flocculent fibers have good adsorptivity and are easily mixed and embedded with other textile fibers in the subsequent spinning process.

In a preferred embodiment, the collagen fiber composite yarn has a leather fiber length of 15 mm or less; preferably, the leather fiber length is 8 mm or less.

The shorter leather fibers are better able to mix and embed well with other textile fibers, and in the subsequent spinning process, the thickness of the spun yarn can be made more uniform.

In a preferred embodiment, the leather of the leather trim comprises dermis or regenerated leather or a combination of dermis and reclaimed skin, and the leather of the leather scrap comprises dermis or regenerated leather or a combination of dermis and regenerated skin.

Typical but non-limiting dermis includes the top layer or the second layer skin.

Preferably, the leather trim comprises a wet blue wet trim, or the leather trim comprises a wet blue wet scrap, or the leather trim includes both a wet blue scrap and a wet blue wet trim; the structure and material of the leather scrap Same as leather trim, no longer repeat them.

Preferably, the wet blue skin is a wet blue skin after neutralization, dyeing, fatliquoring and drying;

The wet blue skin is obtained by removing the oil, degreasing, depilation and chrome tanning with lime, alkali, chlorine, nitric acid and chromium powder. It is blue and has moisture, so it is generally called blue wet. skin.

After the dermis or regenerated leather is pulverized and velveted, the fluffy leather fiber can be obtained. If it is the scrap or scrap of the wet blue skin, it needs to be neutralized, dyed, fatliquored and dried, then pulverized and started. Cashmere, the treated leather is soft and plump; in the process of tanning, fatliquoring is an important process. The purpose of fatliquoring is to make the leather soft and have a certain moisturizing feeling, so that the leather fiber is fully lubricated. Increase the softness and mechanical strength of leather.

In a preferred embodiment, the natural fibers in the collagen fiber composite yarn comprise one or a combination of at least two of plant fibers, animal fibers or mineral fibers.

Preferably, the chemical fibers comprise organic fibers and/or inorganic fibers.

Preferably, the organic fiber comprises one or a combination of at least two of viscose fiber, acetate fiber, acetate fiber, cuprammonium fiber, nylon, polyester, acrylic, spandex, vinylon, polypropylene or polyvinyl chloride.

The combination of leather fiber and other fiber spinning yarns combines the advantages of leather fiber and other fibers to achieve complementary advantages.

In a preferred embodiment, the leather fiber has a mass of from 8 to 90%, preferably from 10 to 80%, more preferably from 40 to 60%, based on the mass of the collagen fiber composite yarn.

Typical, but non-limiting, mass percentages of leather fibers can be 8%, 9%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, or 90%.

This arrangement improves the success rate of the composite of leather fibers and other fibers, thereby ensuring the reliability of the composite spinning of leather fibers and other fibers.

According to a second aspect of the present disclosure, a method for preparing a collagen fiber composite yarn is provided, comprising the steps of:

The leather fiber having a length of 16 mm or less is blended with natural fibers and/or chemical fibers to obtain a collagen fiber composite yarn.

The preparation method of the collagen fiber composite yarn of the present disclosure, the leather short fiber and the other fibers obtained by physically blending the leather trim and/or the leather scrap are combined with other fibers to obtain a collagen fiber composite yarn, which has a simple step and a time step compared with the conventional method. Short, low cost. In addition, the preparation method firstly obtains the short fibers of the leather by physical means, and then blends the short fibers of the leather with other fibers, and the leather short fibers are embedded in the other fibers as the blending process proceeds. In this process, the leather fiber is not easy to curl, and the original performance of the natural leather fiber in the physical preparation process is hardly damaged, and then blended with other fibers, not only makes the leather fiber spun yarn easier, but also spun The yarn has a uniform thickness and good quality.

In a preferred embodiment, the method for preparing a leather fiber comprises the following steps:

b) the coarse material is refined and napped with a pulverizing device having a sawtooth hand to obtain a leather fiber;

Further preferably, a method for preparing a typical collagen fiber composite yarn comprises the following steps:

The manufacturing process of the leather fiber is carried out through at least two processes. First, in the first process, the scrap of the raw material is made into a small piece of coarse material, and then enters the second process, and the sieve is arranged in the second process. The fine pulverizer for the net and the beater, the size of the screen is set with the required fiber length, and the beater is made into a zigzag shape. After the first process, the material enters the second pulverizer to fully attack and completely eliminate the skin knot and the leather block, so that it is fully velveted and refined, and after the fine pulverization, the fiber that has reached the demand from the machine Exhausted in a long strip of mesh. Unlike traditional recycled leather, which is pulverized and beaten, the whole process of leather fiber production is dry. The fiber obtained by physical method is easy to adsorb and flocculate. It is a completely fine-wool leather fiber. This fiber and other textile fibers. Adequate mixing and blending can be achieved when mixing. After the fibers are mixed and combed, they are fed into a striping process, and the resulting strips are fed to a conventional spinning machine for spinning to form a composite yarn.

According to a third aspect of the present disclosure, there is provided a collagen fiber composite yarn prepared by the method for preparing a collagen fiber composite yarn or a collagen fiber composite yarn, which is used for producing a textile product.

The collagen fiber composite yarn of the present disclosure can be woven into recycled leather of similar quality to natural leather, thereby preparing clothes, leather shoes or sofa seats, etc. The mechanical strength and hygienic performance of the product are close to natural leather, so that the woven leather can be used as A substitute for natural leather for use in the field of textile leather. Further, with the collagen fiber composite yarn of the present disclosure, it is also possible to produce a base fabric that meets the requirements of the artificial leather base fabric.

According to a fourth aspect of the present disclosure, a textile product produced from a collagen fiber composite yarn prepared by a method for preparing a collagen fiber composite yarn or a collagen fiber composite yarn is provided.

The textile product has the same advantages as the collagen fiber composite yarn described above or the collagen fiber composite yarn obtained by the above preparation method, and will not be described herein.

Example 1

A collagen fiber composite yarn is made of two layers of leather trim and polyester fiber, wherein the two layers of leather trim are physically formed into leather fibers, the quality of the leather fiber accounts for 60% of the mass of the collagen fiber composite yarn, and the quality of the polyester fiber accounts for collagen fibers. The quality of the composite yarn is 40%, the specification of the polyester fiber is 1.5D, and the length of the polyester fiber is 38mm.

The preparation method of the collagen fiber composite yarn comprises the following steps:

1) The two-layered leather trimmings are placed in a pulverizer for coarse pulverization to form small particles of coarse materials;

2) The coarse material is subdivided and napped by a pulverizer with a sawtooth beater, and the smasher is again subjected to the smashing in the pulverizer, and some of the velvet and refining fibers have reached the composite requirement. The long holes of the 2mm size screen are successively discharged, and the process is continuous, and the leather fibers of 2 mm or less are obtained;

3) feeding the above-mentioned leather fiber and the above-mentioned polyester fiber into the blending machine according to the above content, thoroughly mixing, feeding through a pipe through a toothed bar to a carding machine, combing and remixing, and outputting into a sliver shape, and feeding the strip. The draw frame is spliced and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Example 2

A collagen fiber composite yarn is prepared from blue wet leather trim and polyester fiber, wherein the blue wet leather trimming material is subjected to neutralization, dyeing, fatliquoring and drying treatment, and then the blue wet leather trim is physically formed into leather fiber. The quality of the leather fiber accounts for 50% of the mass of the collagen fiber composite yarn, the quality of the polyester fiber accounts for 50% of the mass of the collagen fiber composite yarn, the specification of the polyester fiber is 1.5D, and the length of the polyester fiber is 38 mm.

1) The blue wet leather trim is placed in a pulverizer for coarse pulverization to prepare a coarse material of small particles;

2) The coarse material is subdivided and napped by a pulverizer with a sawtooth beater, and the smasher is again subjected to the smashing in the pulverizer, and some of the velvet and refining fibers have reached the composite requirement. The long holes of the 5mm screen are successively discharged, and the process is continuous, and the leather fibers of 5 mm or less are obtained;

Example 3

A collagen fiber composite yarn is made of two layers of leather trimmings and acrylic fibers, wherein two layers of leather trimmings are physically made into leather fibers, the quality of leather fibers accounts for 80% of the mass of collagen fiber composite yarns, and the quality of acrylic fibers accounts for collagen fibers. The quality of the composite yarn is 20%, the size of the acrylic fiber is 1.2D, and the length of the acrylic fiber is 32mm.

2) The coarse material is subdivided and napped by a pulverizer with a sawtooth beater, and the smasher is again subjected to the smashing in the pulverizer, and some of the velvet and refining fibers have reached the composite requirement. The long holes of the 16mm screen are successively discharged, and the process is continuous, and the leather fibers of 16 mm or less are obtained;

3) feeding the above-mentioned leather fiber and the above-mentioned acrylic fiber into the blending machine according to the above content, thoroughly mixing, feeding through a pipe through a toothed bar into a carding machine, combing and remixing, and outputting into a sliver shape, and feeding the strip. The draw frame is spliced and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Example 4

A collagen fiber composite yarn comprising two layers of leather trimmings and polyester fiber and acrylic fiber as raw materials, wherein the two layers of leather trimmings are physically formed into leather fibers, and the quality of the leather fibers accounts for 30% of the quality of the collagen fiber composite yarns, and the quality of the polyester fibers It accounts for 20% of the quality of collagen fiber composite yarn, 2.5D of polyester fiber, 51mm of polyester fiber, 50% of the quality of collagen fiber composite yarn, 1.2D of acrylic fiber, and 32mm of acrylic fiber.

2) The coarse material is subdivided and napped by a pulverizer with a sawtooth beater, and the smasher is again subjected to the smashing in the pulverizer, and some of the velvet and refining fibers have reached the composite requirement. The long holes of the 1mm size screen are successively discharged, and the process is continuously performed to obtain leather fibers of 1 mm or less;

3) according to the above content, the above-mentioned leather fiber and the above-mentioned polyester fiber and acrylic fiber are fed into a blending machine, thoroughly mixed, sent to a carding machine through a pipe through a toothed bar, combed and remixed, and then output into a tampon shape. The strips are fed into a draw frame and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Example 5

A collagen fiber composite yarn is made of three layers of leather trimmings and cotton, wherein three layers of leather trimmings are physically made into leather fibers, the quality of leather fibers accounts for 70% of the quality of collagen fiber composite yarns, and the cotton quality accounts for collagen fiber composite yarns. 30% of the quality.

1) The three layers of the leather trim are placed in a pulverizer for coarse pulverization to prepare a coarse material of small particles;

2) The coarse material is subdivided and napped by a pulverizer with a sawtooth beater. After the machine is punched and smashed again by a sawtooth hitter, some of the fibers that have reached the composite requirements are napped and refined from 5mm. The long holes of the specification screen are successively discharged, and the process is continuously performed to obtain leather fibers of 5 mm or less;

3) The leather fiber and the cotton are fed into the blending machine according to the above content, thoroughly mixed, sent to the carding machine through the pipe through the pipe, combed and remixed, and then output into a sliver shape, which is fed into the machine. The machine is spliced and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Example 6

A collagen fiber composite yarn comprising two layers of leather trimmings and PP (Polypropylene, polypropylene) cotton and carbon fiber as raw materials, wherein the two layers of leather trimmings are physically formed into leather fibers, and the quality of the leather fibers accounts for 60% of the quality of the composite yarns. The quality of PP cotton accounts for 20% of the mass of collagen fiber composite yarn, and the quality of carbon fiber accounts for 20% of the quality of collagen fiber composite yarn.

2) The coarse material is subdivided and napped by a pulverizer with a sawtooth beater, and the smasher is again subjected to the smashing in the pulverizer, and some of the velvet and refining fibers have reached the composite requirement. The long holes of the 12mm screen are successively discharged, and the process is continuous, and leather fibers of 12 mm or less are obtained;

3) according to the above content, the above-mentioned leather fiber and the above-mentioned PP cotton and carbon fiber are fed into the blending machine, thoroughly mixed, sent to the carding machine through the pipe through the toothed bar, combed and remixed, and then output into a tampon shape. The draw frame is fed into a draw frame, and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Example 7

A collagen fiber composite yarn is made of two layers of leather trim and wool, wherein the two layers of leather trim are physically formed into leather fibers, the quality of the leather fibers accounts for 60% of the mass of the collagen fiber composite yarn, and the wool quality accounts for the collagen fiber composite yarn. 40% of the quality.

3) feeding the above-mentioned leather fiber and the above-mentioned wool into the blending machine according to the above content, thoroughly mixing, feeding through a pipe through a toothed bar into a carding machine, combing and remixing, and outputting into a tampon-like shape, and feeding the strip The machine is spliced and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Example 8

A collagen fiber composite yarn is composed of two layers of leather trimmings and viscose fibers, wherein the two layers of leather trimmings are physically made into leather fibers, and the quality of the leather fibers accounts for 60% of the mass of the collagen fiber composite yarns, and the viscose fibers constitute collagen. 40% of the quality of the fiber composite yarn.

2) The coarse material is subdivided and napped by a pulverizer with a sawtooth beater. After the machine is struck and smashed again by a sawtooth hitter, some of the fibers that have reached the composite requirements are napped and refined from 10mm. The long holes of the specification screen are successively discharged, and the process is continuous, and the leather fiber of 10 mm or less is obtained;

3) according to the above content, the above-mentioned leather fiber and the above-mentioned viscose fiber are sent into the mixing machine for thorough mixing, and are sent to the carding machine through the pipe through the pipe to be combed and remixed, and then output into a tampon shape. The draw frame is drawn into a draw frame, and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Comparative example 1

A collagen fiber composite yarn is made of two layers of leather trim and polyester fiber, wherein the two layers of leather trimming material are physically made into leather fiber, the leather fiber mass accounts for 93% of the mass of the collagen fiber composite yarn, and the polyester fiber mass accounts for the collagen fiber. 7% of the quality of the composite yarn.

Comparative example 2

A collagen fiber composite yarn is made of collagen fiber and polyester fiber of more than 16 mm, wherein the mass of collagen fiber accounts for 60% of the mass of the collagen fiber composite yarn, and the quality of the polyester fiber accounts for 40% of the mass of the collagen fiber composite yarn.

The collagen fiber and the polyester fiber are fed into the blending machine according to the above content, thoroughly mixed, sent to the carding machine through the pipe through the pipe, combed and remixed, and then output into a sliver shape, and the strip is fed into the strip. The machine is spliced and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Comparative example 3

A collagen fiber composite yarn, which is made of leather fiber and polyester fiber, the quality of the leather fiber accounts for 60% of the quality of the collagen fiber composite yarn, the quality of the polyester fiber accounts for 40% of the quality of the collagen fiber composite yarn, and the specification of the polyester fiber is 1.5D, polyester The length of the fiber is 38 mm.

The leather fiber is prepared from the leather trim by a tanning chromium-containing secondary waste. The specific method is carried out according to the scheme of the embodiment 1 of the Chinese patent CN102425018A, and the specific preparation steps are as follows:

1. Weighing: Accurate weighing of each chromium-containing secondary waste is used as the basis for calculation of the following processes.

2. Softening, acidification, enzyme treatment: (1) Technical regulations: 50% water, initial internal temperature: normal temperature, penetrant JFC 0.1%, oxalic acid 1.0% complex enzyme skin collagen treatment agent F 0.1%. (2) Operation method: adjust the liquid ratio. After the internal temperature, add the penetrant JFC and oxalic acid, rotate for 10 min, add the complex enzyme skin collagen treatment agent F, rotate for 30 min, stop for 10 min, rotate for 10 min, open the drum to check, the end point PH= 2.4, the internal temperature is below 40 °C.

3. Neutralization: (1) Technical regulations: 50% water, 30 °C internal temperature, 0.5% baking soda. (2) Operation method: After adjusting the liquid ratio and internal temperature, add baking soda, turn for 30 minutes, open the drum to check, and the end point PH=5.0-6.5.

4. Drums: After the neutralization meets the requirements, the auxiliary waste will be discharged from the drum and loaded into the defibration process.

5. Defibration and squeezing water: defibration on the defibrating machine, directly squeezing water after defibrating, requiring complete deconstruction of the auxiliary waste, no residual skin, no foam during defibration, and the fiber cake after squeezing The moisture content is 60 to 70%.

6. Drying: The method of drying is used, and the water content is 30 to 35%.

7. Resilience: After the water reaches the requirement, the fiber cakes are collected and stacked for 1 to 2 days to balance the moisture. Note: The fiber cake stacking time must not exceed 10 days.

8. Weighing: The fiber cake was accurately weighed and used as the basis for the following processes.

9. boring oil opening: (1) technical regulations: internal temperature and normal temperature, water 5%, compound oil Z-15 1.0%. (2) Operation method: first add the fiber cake to the drum, then add normal temperature water and the oil that has been emulsified beforehand, and rotate for 10 minutes.

10. Drums: After the suffocating oil has reached the requirements, the fluffy coarse fiber is discharged from the drum and loaded into the next process.

11. Opening: On the opening machine. It is required to initially separate and loosen the entangled dermal fibers.

12. Fiber splitting: Performed on a fiber splitter. Further separation and loose dermal collagen fibers are required without entanglement.

13. Carding: on a carding machine. According to the loose separation of dermal collagen fibers, 1-2 lanes were thickened. The dermal collagen fibers are required to be loosely opened without tangling.

14. Combing: on the comber. According to the loose separation of dermal collagen fibers, 1-3 lanes are combed to obtain dermal collagen fibers.

The leather fiber and the polyester fiber are fed into the blending machine at the same mass ratio for thorough mixing, and are sent to the carding machine through the pipe through the pipe to be combed and remixed, and then output into a tampon-like shape. The machine is spliced and then twisted into a yarn by a spinning machine to obtain a collagen fiber composite yarn.

Test case

The collagen fiber composite yarns obtained in the examples and the comparative examples were tested. The specific test methods were as follows: the composite yarns obtained in the above examples and comparative examples were tested according to the national standard GB/T 3976-1997 textile package. Determination of breaking strength and elongation at break of single yarn of yarn, and the test results are shown in Table 1.

Table 1

It can be seen from the measurement results of Examples 1 to 8 in Table 1 that the collagen fiber composite yarn prepared by the leather method and the other textile fibers obtained by the leather trim/blue wet leather trimming material has a single yarn breaking strength and a single yarn. The strength can reach the standard of composite yarn, the thickness is even, and it can make better use of leather waste resources, reduce costs and improve efficiency.

It can be seen from the measurement results of Example 2 in Table 1 that the leather fiber prepared by the physical method of the blue wet leather trim is blended with other textile fibers, and the obtained collagen fiber composite yarn conforms to the single yarn breaking strength and the single yarn strength. Standard, since the wet blue skin is subjected to neutralization, dyeing, fatliquoring and drying treatment, it takes slightly longer to prepare the collagen fiber composite yarn with the two-layered skin as a trim, but compared with the conventional method of Comparative Example 3, Its efficiency is still significantly improved. It can be seen from the measurement results of Example 5 in Table 1 that the collagen fiber composite yarn prepared by using the three-layered leather and other textile fibers as raw materials has the single yarn breaking strength and the single yarn strength in accordance with the quality standard.

It can be seen from the measurement result of Comparative Example 1 in Table 1 that when the amount of the leather fiber is greater than 90% of the mass of the composite yarn, it is blended with other textile fibers, and the collagen fiber composite yarn produced is easily broken, and the single yarn breaking strength is obtained. And single yarn strength is poor, the quality is not good.

It can be seen from the measurement results of Comparative Example 2 in Table 1 that when the length of the leather fiber is more than 16 mm, the spun collagen fiber composite yarn has a single yarn breaking strength and a single yarn strength which meet the standard, but the thickness is not uniform.

From the measurement results of Comparative Example 3 in Table 1, it can be seen that the collagen fibers prepared by the conventional method are blended with other fibers, and the obtained collagen fiber composite yarn also has the disadvantage of uneven thickness. In addition, due to the cumbersome steps of the conventional method, the process of drying the collagen fiber after the wet process is also time consuming, and the overall time consumption is much longer than the leather fiber obtained by the physical method.

While the present invention has been illustrated and described with reference to the embodiments of the embodiments of the present invention, it is understood that many other changes and modifications can be made without departing from the spirit and scope of the disclosure. Accordingly, it is intended to embrace in the appended claims

Industrial applicability

The collagen fiber composite yarn provided by the application has uniform thickness and good quality; the preparation method of the collagen fiber composite yarn has the advantages of simple steps, short use time and low cost, and the collagen fiber composite yarn obtained by the preparation method has uniform thickness and quality. Well, the single yarn breaking strength and the single yarn strength are both high; the textile products made by using the above-mentioned collagen fiber composite yarn have mechanical strength and hygienic performance close to natural leather, so that the woven recycled leather can be used as a substitute for natural leather. Moreover, it is also possible to produce a base fabric that meets the requirements of the artificial leather base fabric.

Claims

A collagen fiber composite yarn, characterized in that the collagen fiber composite yarn comprises leather fibers and other textile fibers, and other textile fibers comprise natural fibers and/or chemical fibers, and the leather fibers are combined with other textile fibers;

The leather fibers are physically obtained from leather trim and/or leather scraps, the leather fibers having a length of less than 16 mm.
The collagen fiber composite yarn according to claim 1, wherein the leather fiber is prepared by pulverizing and raising a leather trim and/or a leather scrap to obtain a leather fiber;

Preferably, the leather fibers are prepared by the following method:

First, the leather trim and/or the leather scrap are coarsely pulverized, and then finely pulverized and napped to obtain leather fibers;

Preferably, the leather fibers are prepared by the following method:

The leather trim and/or the leather scrap are coarsely pulverized into small pieces of coarse material, and then pulverized and refined by a pulverizing device having a sawtooth hand to obtain a leather fiber.
The collagen fiber composite yarn according to claim 1 or 2, wherein the leather fiber has a length of 15 mm or less;

Preferably, the leather fibers have a length of less than 8 mm.
The collagen fiber composite yarn according to claim 1 or 2, wherein the leather of the leather trim comprises dermis and/or regenerated leather, and/or the leather of the leather scrap comprises dermis and/or regenerated leather. ;

Preferably, the leather trim comprises a wet blue wet trim and/or a blue wet leather scrap, and/or the leather scrap comprises a wet blue wet trim and/or a wet blue wet scrap;

Preferably, the wet blue skin is a wet blue skin after neutralization, dyeing, fatliquoring and drying;

Preferably, the blue wet leather fiber is prepared by the following method: neutralizing, dyeing, fatliquoring and drying the blue wet leather trim and/or the blue wet leather scrap, and then pulverizing and raising to obtain a blue wet leather. fiber.
The collagen fiber composite yarn according to claim 1 or 2, wherein the natural fiber comprises one or a combination of at least two of plant fibers, animal fibers or mineral fibers;

Preferably, the chemical fiber comprises organic fibers and/or inorganic fibers;

Preferably, the organic fiber comprises one or a combination of at least two of viscose fiber, acetate fiber, acetate fiber, copper ammonia fiber, nylon, polyester, acrylic, spandex, vinylon, polypropylene or polyvinyl chloride;

Preferably, the inorganic fibers comprise one or a combination of at least two of carbon fibers, glass fibers or metal fibers.
The collagen fiber composite yarn according to claim 1 or 2, wherein the leather fiber has a mass of 8 to 90%, preferably 10 to 80%, more preferably 40 to 60%, based on the mass of the collagen fiber composite yarn.
The collagen fiber composite yarn according to claim 6, wherein the leather fiber mass accounts for 8%, 9%, 10%, 20%, 30%, 40%, 50%, 60% of the mass of the collagen fiber composite yarn. %, 70%, 80% or 90%.
The collagen fiber composite yarn according to any one of claims 1 to 7, wherein the natural fiber comprises plant fiber, animal fiber or mineral fiber.
The collagen fiber composite yarn according to claim 8, wherein the plant fiber comprises cotton or hemp; the animal fiber comprises wool, cashmere or silk; and the mineral fiber comprises asbestos.
The collagen fiber composite yarn according to claim 4, wherein the dermis comprises a top layer skin or a second layer skin.
The method for preparing a collagen fiber composite yarn according to any one of claims 1 to 10, comprising the steps of:

Blending leather fibers having a length of 16 mm or less with natural fibers and/or chemical fibers to obtain collagen fiber composite yarns; wherein the leather fibers are physically obtained from leather trim and/or leather scraps;

Preferably, the method for preparing the leather fiber comprises the following steps:

a) coarsely pulverizing leather trim and/or leather scraps into small pieces of coarse material;

b) The coarse material is refined and napped with a pulverizing device having a sawtooth hand to obtain a leather fiber having a length of 16 mm or less.
The method for preparing a collagen fiber composite yarn according to claim 11, comprising the steps of:

a) coarsely pulverizing leather trim and/or leather scraps into small pieces of coarse material;

b) the coarse material is refined and napped with a pulverizing device having a sawtooth hand to obtain a leather fiber having a length of 16 mm or less;

c) mixing the leather fiber with the natural fiber and/or the chemical fiber, and combing, drawing and twisting the yarn to obtain a collagen fiber composite yarn.
The collagen fiber composite yarn according to any one of claims 1 to 10, or the collagen fiber composite yarn prepared by the method for producing a collagen fiber composite yarn according to claim 11 or 12, for use in producing a textile article.
A textile product produced by using the collagen fiber composite yarn according to any one of claims 1 to 10 or the collagen fiber composite yarn according to the production method of claim 11 or 12.