CN114905759A - Preparation method of water-based bio-based leather - Google Patents
Preparation method of water-based bio-based leather Download PDFInfo
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- CN114905759A CN114905759A CN202210587123.4A CN202210587123A CN114905759A CN 114905759 A CN114905759 A CN 114905759A CN 202210587123 A CN202210587123 A CN 202210587123A CN 114905759 A CN114905759 A CN 114905759A
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- leather
- leather material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0017—Agents activating degradation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0029—Perfuming, odour masking or flavouring agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0032—Pigments, colouring agents or opacifiyng agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a preparation method of water-based bio-based leather, which relates to the technical field of leather fabric preparation and comprises the following steps: selecting a leather material; step two: molding and manufacturing a leather material; step three: coating processing of leather materials; step four: and (5) processing a finished product of the leather material. The bio-based leather has high physical strength, has excellent physical property through the synergistic effect of the plant fibers and the bio-based resin, is mixed with pigments, aromatics and active agents for use, and simultaneously adopts a constant-temperature drying mode to remove the peculiar smell in the leather space in the preparation process, avoid the damage of the peculiar smell to human bodies and reduce the use efficiency of the leather.
Description
Technical Field
The invention relates to the technical field of leather fabric preparation, in particular to a preparation method of water-based bio-based leather.
Background
The leather industry covers the main industries of leather making, shoes making, leather clothing, leather products, fur and products thereof and the matching industries of leather chemical industry, leather hardware, leather machinery, auxiliary materials and the like. The association degree of the upstream and the downstream is high, the product is very green depending on market pulling, and the characteristics of earning foreign exchange, enriching people and employment are integrated. With the wide application range of leather, the requirements for the leather are increased, and the leather is a bio-based material prepared by taking animal skin as a raw material and is widely applied to daily life due to excellent comfort, high air permeability and durability. The trade in leather goods is estimated to amount to $ 1000 billion per year, indicating that the leather industry plays a key role in the global economy. However, leather products are rich in protein and provide a large amount of nutrients for the rapid growth and reproduction of microorganisms. In addition, the collagen fiber network structure and moisture absorption properties of leather provide perfect conditions for adhesion, growth and proliferation of microorganisms, ultimately leading to the formation of biofilms. The biofilm produced on the surface of leather can cause many undesirable problems such as discoloration, production of unpleasant odors, damage to the product, and even the risk of skin infection. The following problems exist in the prior art:
1. the existing water-based bio-based leather has slow degradation rate after being used, is easy to influence the surrounding environment and is not beneficial to environmental protection;
2. in the using process of some existing water-based bio-based leathers, the peculiar smell in the leather space is large, and certain damage is easily caused to the human body of a user.
Disclosure of Invention
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a preparation method of water-based bio-based leather comprises the following steps: selecting a leather material; step two: molding and manufacturing a leather material; step three: coating processing of leather materials; step four: and (5) processing a finished product of the leather material.
The technical scheme of the invention is further improved as follows: the first step is as follows: the leather material is selected from 25-32% of plant fiber, 30-45% of biodegradable resin, 2% of polyurethane, 13-20% of cotton, 15-25% of polypropylene fiber and other synthetic fibers and 1.5-3.5% of biodegradation agent.
The technical scheme of the invention is further improved as follows: the second step is as follows: the leather material is formed and manufactured by respectively and orderly pouring 25 to 32 percent of vegetable fiber, 30 to 45 percent of biodegradable resin, 2 percent of polyurethane, 13 to 20 percent of cotton, 15 to 25 percent of synthetic fiber such as polypropylene fiber and 1.5 to 3.5 percent of biodegradable agent into a stirring bin, increasing the internal temperature to 85 to 90 degrees in the stirring process, carrying out forward stirring in the adding process, carrying out reverse stirring after the adding is finished, then carrying out uniform stirring after the adding is finished, wherein the rotation speed of a stirring shaft is 200rpm, then carrying out sealed storage for 2 to 3 hours after the rotation is finished, and keeping the temperature at 70 to 80 degrees in the storage process.
The technical scheme of the invention is further improved as follows: and then, extruding and forming the leather material by using forming equipment, cooling the formed leather fabric, standing the leather fabric for 5 hours, then placing the leather fabric in water of 90-120 degrees for disinfection and sterilization, and setting the standing time to be 90 min.
The technical scheme of the invention is further improved as follows: place the leather material after will the shaping afterwards on the polisher, utilize the polishing sword to polish the outside of leather material, polish the outside burr of leather material, go into suspension type heating to whole leather material after the processing of polishing is accomplished, rotate in the heating, make and carry out even being heated to the leather material, paint one deck spraying material in the outside of leather material afterwards, stand the leather material afterwards, the time of standing is 1.5h, the leather material after polishing effectively improves outside smooth degree.
The technical scheme of the invention is further improved as follows: the third step is that: the coating processing of the leather material comprises the steps of firstly mixing the pigment, the aromatic and the active agent, then uniformly coating the mixture on the formed leather surface, keeping the temperature at 40 degrees in the coating process, coating the 2.6mm coating on the leather surface, then cooling the coating, mixing the pigment, the aromatic and the active agent for use, and simultaneously adopting a constant-temperature drying mode to remove the peculiar smell in the leather space in the preparation process, avoiding the harm of the peculiar smell to a human body and reducing the use efficiency of the leather.
The technical scheme of the invention is further improved as follows: the fourth step is that: the finished product processing of the leather material comprises the steps of placing the leather material at the upper end of an extruding machine, then extruding the leather material by using the extruding machine, enabling a coating and the leather material to be bonded together better, enabling the time of single extrusion to be 30s, repeatedly extruding for 2-3 times, enabling the interval of each extrusion to be 1min, and forming the leather material through a series of operations.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:
1. the invention provides a preparation method of water-based bio-based leather, wherein biodegradable polyurethane resin is selected as a material which can be decomposed after being used, so that the effect of environmental protection is achieved, and the influence on the surrounding environment caused by non-degradability or slow degradation of the leather is avoided.
2. The invention provides a preparation method of water-based bio-based leather, which is characterized in that a pigment, an aromatic and an active agent are mixed for use, and a constant-temperature drying mode is adopted, so that peculiar smell in a leather space is removed in the preparation process of the leather, the damage to a human body caused by the peculiar smell is avoided, and the use efficiency of the leather is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the steps of the present invention.
Detailed Description
The principles and features of this invention have been described in an illustrative manner, and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to scale, but merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, which are described in further detail below with reference to the examples:
example 1
As shown in fig. 1, the invention provides a preparation method of aqueous bio-based leather, which comprises the following steps: selecting leather materials, namely 25 to 32 percent of plant fibers, 30 to 45 percent of biodegradable resin, 2 percent of polyurethane, 13 to 20 percent of cotton, 15 to 25 percent of synthetic fibers such as polypropylene fibers and 1.5 to 3.5 percent of biodegradation agent; step two: the forming manufacturing of the leather material comprises the steps of respectively and orderly pouring 25-32% of vegetable fiber, 30-45% of biodegradable resin, 2% of polyurethane, 13-20% of cotton, 15-25% of synthetic fiber such as polypropylene and 1.5-3.5% of biodegradable agent into a stirring bin, increasing the internal temperature to 85-90 ℃ in the stirring process, carrying out forward stirring in the adding process, carrying out reverse stirring after the adding is finished, then carrying out uniform stirring after the adding is finished, carrying out the rotation speed of a stirring shaft at 200rpm, then carrying out sealed storage for 2-3 h after the rotation is finished, keeping the temperature at 70-80 ℃ in the storage process, then carrying out extrusion forming on the leather material by using forming equipment, cooling the formed leather fabric, standing the leather fabric for 5h, then, placing the leather fabric in water of 90-120 degrees for disinfection and sterilization, setting the standing time to be 90min, then placing the formed leather material on a grinding machine, grinding the outer part of the leather material by using a grinding knife, grinding burrs on the outer part of the leather material, heating the whole leather material in a suspended manner after the grinding treatment is finished, rotating the whole leather material while heating the whole leather material, then coating a layer of spray coating on the outer part of the leather material, standing the leather material for 1.5h, and effectively improving the external smoothness degree of the ground leather material; step three: the coating processing of the leather material, mix pigment, aromatic agent and activator at first, then the homogeneous coating is on the leather surface of shaping, keep the temperature at 40 degrees in the course of coating, coat 2.6mm of coating on the leather surface, then cool after finishing coating, the mixture of pigment, aromatic agent and activator uses, adopt the way of drying in the sun at constant temperature at the same time, make the leather get rid of the peculiar smell of the leather space in the course of preparing, avoid the peculiar smell to cause the injury to the human body, reduce the use efficiency of the leather; step four: the finished product of the leather material is processed, the leather material is placed at the upper end of an extruding machine, then the extruding machine is used for extruding the leather material, so that the coating and the leather material can be better adhered together, the time of single extrusion is 30s, repeated extrusion can be carried out, the extrusion times are 2-3 times, the interval of each extrusion is 1min, and the leather material is manufactured and molded through a series of operations.
The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.
Claims (7)
1. A preparation method of water-based bio-based leather is characterized by comprising the following steps: the first step is as follows: selecting a leather material; step two: molding and manufacturing a leather material; step three: coating processing of leather materials; step four: and (5) processing a finished product of the leather material.
2. The method for preparing the water-based bio-based leather according to the claim 1, which is characterized in that: the first step is as follows: the leather material is selected from 25-32% of plant fiber, 30-45% of biodegradable resin, 2% of polyurethane, 13-20% of cotton, 15-25% of polypropylene fiber and other synthetic fibers and 1.5-3.5% of biodegradation agent.
3. The method for preparing the water-based bio-based leather according to the claim 1, which is characterized in that: the second step is as follows: a leather material is formed and manufactured, 25% -32% of leather material plant fiber, 30% -45% of biodegradable resin, 2% of polyurethane, 13% -20% of cotton, 15% -25% of polypropylene and other synthetic fibers and 1.5% -3.5% of biodegradable agents are poured into a stirring bin respectively and orderly, the internal temperature is increased to 85-90 ℃ in the stirring process, forward stirring is carried out in the adding process, reverse stirring is carried out after the adding is finished, uniform stirring is carried out after the adding is finished, the rotation speed of a stirring shaft is 200rpm, then sealing and storing are carried out for 2-3 hours after the rotation is finished, the temperature is kept at 70-80 ℃ in the storing process, biodegradable polyurethane resin selected from the materials can be decomposed after being used, and therefore the environment-friendly effect is achieved, the leather is prevented from being undegradable or slowly degraded, so that the influence on the surrounding environment is avoided.
4. The method for preparing the water-based bio-based leather according to the claim 3, wherein the method comprises the following steps: and then, extruding and forming the leather material by using forming equipment, cooling the formed leather fabric, standing the leather fabric for 5 hours, then placing the leather fabric in water of 90-120 degrees for disinfection and sterilization, and setting the standing time to be 90 min.
5. The method for preparing the water-based bio-based leather according to the claim 4, wherein the method comprises the following steps: place the leather material after will the shaping afterwards on the polisher, utilize the polishing sword to polish the outside of leather material, polish the outside burr of leather material, go into suspension type heating to whole leather material after the processing of polishing is accomplished, rotate in the heating, make and carry out even being heated to the leather material, paint one deck spraying material in the outside of leather material afterwards, stand the leather material afterwards, the time of standing is 1.5h, the leather material after polishing effectively improves outside smooth degree.
6. The method for preparing the water-based bio-based leather according to the claim 1, which is characterized in that: the third step is that: the coating processing of the leather material comprises the steps of firstly mixing the pigment, the aromatic and the active agent, then uniformly coating the mixture on the formed leather surface, keeping the temperature at 40 degrees in the coating process, coating the 2.6mm coating on the leather surface, then cooling the coating, mixing the pigment, the aromatic and the active agent for use, and simultaneously adopting a constant-temperature drying mode to remove the peculiar smell in the leather space in the preparation process, avoiding the harm of the peculiar smell to a human body and reducing the use efficiency of the leather.
7. The method for preparing the water-based bio-based leather according to the claim 1, which is characterized in that: the fourth step is that: the finished product of the leather material is processed, the leather material is placed at the upper end of an extruding machine, then the extruding machine is used for extruding the leather material, so that the coating and the leather material can be better adhered together, the time of single extrusion is 30s, repeated extrusion can be carried out, the extrusion times are 2-3 times, the interval of each extrusion is 1min, and the leather material is manufactured and molded through a series of operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210587123.4A CN114905759A (en) | 2022-05-26 | 2022-05-26 | Preparation method of water-based bio-based leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210587123.4A CN114905759A (en) | 2022-05-26 | 2022-05-26 | Preparation method of water-based bio-based leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114905759A true CN114905759A (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210587123.4A Withdrawn CN114905759A (en) | 2022-05-26 | 2022-05-26 | Preparation method of water-based bio-based leather |
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| CN (1) | CN114905759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117681537A (en) * | 2024-02-04 | 2024-03-12 | 福建华夏合成革有限公司 | Preparation device and process of water-based bio-based synthetic leather |
-
2022
- 2022-05-26 CN CN202210587123.4A patent/CN114905759A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117681537A (en) * | 2024-02-04 | 2024-03-12 | 福建华夏合成革有限公司 | Preparation device and process of water-based bio-based synthetic leather |
| CN117681537B (en) * | 2024-02-04 | 2024-05-03 | 福建华夏合成革有限公司 | Preparation device and process of water-based bio-based synthetic leather |
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Application publication date: 20220816 |
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| WW01 | Invention patent application withdrawn after publication |