11 results about "Leather production processes" patented technology

The application relates to the field of embossing machines and artificial leather embossing equipment, in particular to an embossing machine and artificial leather embossing equipment, which are used in the post-processing procedure of the artificial leather production process and comprise an embossing machine, the embossing machine is matched with a rack, a supporting roller, an embossing roller, a fixing base, an embossing oil cylinder and related components, the accurate sliding and positioning of the embossing roller on the rack are realized, and the embossing operation of the deep embossing artificial leather can be realized. In addition, an artificial leather embossing equipment comprising the embossing machine is provided, and efficient and stable operation in the embossing process can be realized. The application achieves the technical effects of improving the operation convenience of the embossing machine, improving the embossing precision and optimizing the overall equipment working efficiency.

The present application relates to the technical field of leather production, and provides a preparation method of high-grade and flexible cowhide leather, which solves the problems of slight poor flexibility, obvious wrinkles, low quality and grade of the leather produced by the existing leather production process; the method comprises the following steps: (1) pre-treatment; (2) bottom sealing; (3) bottom coating; (4) middle coating; and (5) top coating, so as to obtain the high-grade and flexible cowhide leather product.

The invention discloses regenerated cattle fiber leather for an automobile and a manufacturing method, and belongs to the technical field of automobile interior leather materials.The regenerated cattle fiber leather for the automobile comprises a base cloth layer; the cow leather resin fiber layer is uniformly laid on the base cloth layer, and the cow leather resin fiber layer comprises cow leather leftover materials and mixed resin; and the coloring layer is laid on the cow leather resin fiber layer. According to the method, leftover waste in the cow leather production process is recycled and reused, the automobile-specification-grade regenerated cow fiber leather material is prepared again through cow leather fiber tanning modification, smashing processing, lapping forming and coating modification, the regenerated cow fiber leather has the unit area mass of 600-919 g / m < 2 >, the breaking strength of 900-1400 N / 50 mm, the tearing strength of 48-71 N and the color fastness to rubbing of 4-5, the texture is close to that of real leather, and the automobile-specification-grade regenerated cow fiber leather is obtained. The durability and mechanical properties meet the requirements of automobile specifications, and the material has better odor performance than leather, and can be widely popularized and applied to automobile steering wheels and seats.

The invention relates to the technical field of artificial leather, and discloses artificial leather and a preparation method thereof, and the artificial leather comprises a surface facing layer, a bionic intelligent humidifying middle layer and a base layer. The middle layer is provided with a porous supporting frame and a vertical air channel, and temperature-sensitive hydrogel units are embedded in pores. The ventilation channel can be automatically opened and closed when the body temperature changes, intelligent ventilation and humidity adjustment are achieved, the air channel is blocked for heat preservation at low temperature, and ventilation is enhanced at high temperature. The temperature-sensitive hydrogel unit is protected by internal packaging, friction and chemical erosion are avoided, durability is improved, the service life is prolonged, and the product has good wearing comfort, is suitable for the fields of clothes, furniture, automotive interiors and the like, is compatible with an existing artificial leather production process and has industrialization potential.

The invention discloses a variable-pressure intelligent leather wringing and moisture content real-time detection device, and relates to the field of leather processing, a dewatering roller set drives a main shaft and a rotary drum to rotate at a high speed through a power assembly, and a main eccentric block and an auxiliary eccentric block arranged on the main shaft and the rotary drum generate synchronous inertia force or inertia force with phase difference under a controlled working condition; instantaneous high-strength extrusion is applied to the leather, efficient dehydration is achieved, fluctuation clamping can be formed under the action of the rotating speed difference, and the leather swings to promote water dispersion. The dewatering roller set is matched with the sliding rail through the roller base to restrain the acting force in the horizontal direction and is supported by the viscous force damper, invalid shaking is filtered, and the system is kept stable. And the distance between the rollers is adjusted through attraction of electromagnets, so that the equipment can adapt to leather with different thicknesses and keep stable attachment. According to the equipment, variable inertia extrusion dehydration and real-time moisture content detection are combined, the dehydration efficiency is improved, the leather damage risk is reduced, and the intelligence and consistency of the leather production process are improved.

The invention relates to the technical field of synthetic leather color matching, and particularly discloses a high-stability dry-process phthalocyanine blue sheet for synthetic leather and a preparation method of the high-stability dry-process phthalocyanine blue sheet. Comprising the following components in parts by weight: 30-50 parts of modified phthalocyanine blue powder, 30-50 parts of polystyrene-acrylonitrile resin, 2-15 parts of SMA resin, 10-12 parts of a wetting dispersant and 2-5 parts of an anti-flooding auxiliary agent. The invention also discloses a preparation method of the color chip. The dry-method color chip is prepared by modifying the phthalocyanine blue pigment, introducing a series of optimization auxiliaries and the like, the stability of the dry-method color chip is obviously improved, the dry-method color chip has good compatibility with a polyurethane system, the phenomena of flooding flocculation, layered precipitation and the like occurring in the color mixing process are reduced, and the color mixing quality is improved. The risks of uneven leather surface color and front-back and left-right color difference in the synthetic leather on-machine production process are avoided, the production cost is reduced, the increasing requirements of the market on the synthetic leather quality are met, and the economic value is very high.

The utility model discloses an energy-saving heating and coating device for artificial leather in the technical field of artificial leather production and processing, which is reasonable in structure and is characterized in that the top of a waste heat recovery box on the top of a heating insulation box is connected into a waste heat pipe, and waste heat generated in the artificial leather production process is connected into the waste heat pipe. Waste heat is conveyed into the waste heat recycling box through the waste heat pipe, then the waste heat is driven into the heating and heat preservation box through the draught fan in the waste heat recycling box, artificial leather coating enters the heating and heat preservation box, heating treatment can be conducted on artificial leather in cooperation with the heating pipe, and the temperature in the heating and heat preservation box is kept not prone to loss in cooperation with the continuously conveyed waste heat. According to the artificial leather heating and coating device, the situation that the temperature in the heating and heat preservation box is lost too fast is avoided as much as possible, the energy-saving effect of the artificial leather heating and coating device is achieved according to the adopted waste heat recovery mode, and the using effect and efficiency of the artificial leather heating and coating device are directly and effectively improved.

This invention discloses a production system and method for waterproof leather, relating to leather production processes, including: a physical execution layer comprising a raw material pretreatment unit, a wet processing drum unit, a finishing and drying unit, a surface treatment unit, and a post-finishing quality inspection unit connected in sequence; a data sensing layer deployed in each unit of the physical execution layer for real-time data acquisition, including images of leather blanks, process parameters, material consumption, and online quality inspection results; an intelligent decision-making and control layer comprising: a digital twin model for mapping the real-time status of the physical execution layer; a process knowledge base for storing historical production data and optimizing process formulas; and a central control unit. This invention effectively solves the core pain points that have long existed in traditional waterproof leather production, such as large quality fluctuations, reliance on manual experience, lagging process control, inefficient defect handling, and slow process optimization.

The application discloses a high-performance cattle crust production process based on salt-free pickling and high-pH value chrome tanning, and is characterized in that the process comprises the following steps in sequence: water washing of yellow cattle softened pelt, salt-free pickling, chrome tanning, alkali extraction, water washing out of drum, standing, water squeezing, shaving, weighing, softening rinsing, water washing, chrome-zirconium combined retanning, neutralization, water washing, filling, fatting, surface treatment, water washing out of drum, standing and drying finishing; aromatic sulfonic acid or aromatic sulfonic acid oligomer is selected as a pickling agent in the salt-free pickling process; at least chlorosulfonated paraffin fatting agent, modified glutaraldehyde, chrome tanning agent, zirconium tanning agent, amphoteric aromatic sulfonic acid condensate and natural protein filler are added in the chrome-zirconium combined retanning process; the production process disclosed by the application can effectively solve the problems of chloride ion and chrome pollution caused by traditional pickling-chrome tanning technology, and simultaneously provides a wet-state dyeing and finishing process technology for transforming blue wet leather into crust leather without reducing the physical and mechanical strength of the blue wet leather.

The invention provides a leather product carbon emission prediction method and system based on combination of heterogeneous data fusion and a series neural network model. According to the method, whole-process carbon emission prediction is decoupled into two series tasks: firstly, a first neural network model is constructed, preferably, a long-short-term memory network is adopted, and the first neural network model is specially used for processing process time sequence data (such as pH and temperature curves) collected at high frequency in a leather process and encoding the process time sequence data into a group of process feature vectors; and then, constructing a whole-process aggregation model, preferably adopting a multi-layer perceptron for fusing the process feature vector and all static data (such as drying energy consumption, chemical consumption and transportation data), and finally predicting the whole-process total carbon emission value of leather product manufacturing. According to the method, the special data type is processed through the special model, the technical problems that time sequence data and static data coexist in the leather production process, and fusion processing of a single model is difficult are solved, and the accuracy of predicting the carbon emission of the leather product is remarkably improved.

The invention relates to a water-based microfiber leather production process and water-based microfiber leather, and belongs to the technical field of synthetic leather production.In the production process, microfiber leather impregnation equipment is used for conducting impregnation operation on multiple pieces of cloth at the same time, and the microfiber leather impregnation equipment comprises an outer impregnation winding drum set, a first inner impregnation core set and a second inner impregnation core set; the outer impregnation winding drum set comprises a plurality of corner frame assemblies and belt impregnation assemblies located in the two corner frame assemblies, each belt impregnation assembly can conduct impregnation on a piece of cloth, and the water-based slurry can be driven by the first inner impregnation core set and the second inner impregnation core set to penetrate through each piece of cloth. Therefore, the multiple pieces of cloth are impregnated, meanwhile, the water-based slurry can penetrate through each piece of cloth, the cloth impregnation effect is improved, the interior of the corner frame assembly of the outer impregnation winding drum set is of a hollow structure and can communicate with the impregnation assemblies, the water-based slurry between the impregnation assemblies can communicate with one another, and the impregnation effect of the cloth is improved. And the impregnation of the water-based slurry among the fabrics is more uniform.