CN106671634B - A kind of production technology preparing cladding using laser marking machine - Google Patents

Abstract

The present invention relates to leather processing technique fields, and in particular to a kind of production technology being prepared cladding using laser marking machine is included the following steps：（1）Selection：Sheepskin, pigskin or the ox-hide cladding scraped using inferior grade and surface spinosity are as scytoblastema；（2）It draws a design：It is drawn a design by the computer of laser marking machine, output pattern；（3）Laser engraving：The pattern of output concave-convex sense and relief lines have been provided into laser marking machine in cladding surface engraving.The production craft step of the present invention is simple, convenient operation and control, stable quality, and production efficiency is high, and raw material is cheap and easy to get, and cladding utilization rate is high, and production cost is low, can large-scale industrial production；The quality of finished product cladding obtained is close with first layer lether material, can be widely used in the fabric of the products such as footwear material, luggage, handbag, dress ornament and furniture, greatly improves the added value of the cladding.

Description

A production process for preparing leather by using a laser laser marking machine

technical field

The invention relates to the technical field of leather processing, in particular to a production process for preparing leather by using a laser marking machine.

Background technique

Leather is widely used on the surface of daily necessities, such as tables and chairs, sofas, shoe materials, clothing, etc., to add texture, beauty or durability to daily necessities. Leather can be broadly classified into artificial leather and natural leather. Natural leather refers to taking animal fur and drying, cleaning, softening, dyeing, trimming, cutting and other production processes to form a smooth surface and tough texture.

The existing low-grade sheepskin, pigskin or cowhide with thorns and scratches on the surface can only be used to make the inner lining of the leather because of its insufficient fineness and poor gloss. It cannot be used as the surface material of the product, and its application range is limited , the economic benefit of the leather material that makes is not high.

Contents of the invention

In order to overcome the shortcomings and deficiencies existing in the prior art, the object of the present invention is to provide a production process for preparing leather by using a laser laser marking machine. The production process has simple steps, convenient operation and control, stable quality, and high production efficiency. The raw materials are cheap and easy to obtain, the utilization rate of the leather is high, the production cost is low, and it can be industrialized on a large scale; the quality of the finished leather is similar to that of the top layer of leather, and it can be widely used in shoe materials, bags, handbags, clothing and furniture The fabrics of such products have greatly improved the added value of the leather.

The purpose of the present invention is achieved through the following technical solutions: a production process for preparing leather by using a laser laser marking machine, comprising the following steps:

(1) Material selection: use low-grade sheepskin, pigskin or cowhide leather with thorns on the surface as the skin embryo;

(2) Draw patterns: draw patterns through the computer of the laser marking machine, and output the patterns;

(3) Laser engraving: Use a laser marking machine to engrave the output pattern on the surface of the leather with a concave-convex and three-dimensional texture.

Preferably, in the step (2), the output pattern is a high-resolution image with a resolution of 1000-2000 L/cm.

In the present invention, by controlling the output pattern resolution to 1000-2000L/cm, the engraved pattern has high definition and three-dimensional appearance.

Preferably, in the step (3), the process parameters of laser engraving are: the motor power is 30-50W, the focal length is 20-24mm, the cutting width is 10-100μm, the engraving depth is 0.1-0.2mm, and the engraving speed is 400 -500mm/s.

By adopting the above process parameters, the present invention has good effect of laser engraving, and the quality of the finished leather material is similar to that of the top layer leather material, which greatly improves the added value of the leather material.

Preferably, after the step (1), the step (11) scraping and repairing is also included: use a scraper to scrape and fill the repairing ointment on the surface of the skin embryo, put the scraped skin embryo into an oven to dry and shape it, and use a roller to polish it. The pressing plate presses the leather embryo flat, the drying temperature is 60-100°C, and the drying time is 5-10min.

In the present invention, by scraping and mending after material selection, it can ensure that the material of the repairing paste can be fully embedded in the skin embryo, and the coarse pores can be well filled up, and the prepared leather material has high smoothness.

Preferably, the repairing ointment includes the following raw materials in parts by weight:

The repairing plaster of the present invention adopts the above-mentioned raw materials and strictly controls the weight of each raw material, so that the prepared wound repairing plaster has good film-forming properties, very tight film formation and good elasticity, and is resistant to scratches, scratches, The surface with holes and other defects has a good masking effect, and the material has strong adhesion and can be stably fixed on the skin. The material has good stability and good gloss, which endows the surface of the skin with excellent flatness and restores the surface of the skin. It is smooth and smooth, improves the quality of the prepared leather material, and increases the added value of the leather material.

Preferably, the thickener is a mixture composed of sodium carboxymethylcellulose, organic bentonite and polyvinylpyrrolidone in a weight ratio of (1-2):(2-4):1.

The present invention uses sodium carboxymethyl cellulose, organobentonite and polyvinylpyrrolidone as thickeners, and controls its weight ratio to be (1-2):(2-4):1, which has a good thickening effect , the prepared repair wound ointment has good film-forming property, very tight film-forming and good elasticity.

The wetting agent is a mixture of nonylphenol polyoxyethylene ether and sodium lauryl sulfate in a weight ratio of 1-2:1.

In the present invention, nonylphenol polyoxyethylene ether and sodium lauryl sulfate are compounded and used as a wetting agent, and the weight ratio thereof is controlled to be (1-2): 1, so that the dewetting effect is good, and the prepared supplement The wound ointment has good film-forming properties, and has a good masking effect on the scratches, scratches, cavities and other flawed surfaces of the skin embryo.

Preferably, the leveling agent is a mixture of a silicone leveling agent and an acrylate leveling agent in a weight ratio of 0.8-1.2:1.

The present invention adopts silicone leveling agent and acrylate leveling agent as leveling agent compounded use, and controls its weight ratio to be (0.8-1.2): 1, and its leveling effect is good, and the repairing ointment prepared is stable Good resistance, good gloss, endows the surface of the skin with excellent flatness, restores the surface of the skin to be smooth and smooth, improves the quality of the produced leather, and increases the added value of the leather.

The film-forming aid is a mixture composed of N-methylpyrrolidone, methylphenyl ether and diethylene glycol butyl ether in a weight ratio of 1:(0.8-1.2):(1.5-2.5).

The present invention uses N-methylpyrrolidone, methylphenyl ether and diethylene glycol butyl ether as film-forming aids, and controls its weight ratio to be 1:(0.8-1.2):(1.5-2.5), The prepared repairing cream has good film-forming properties, very firm film-forming and good elasticity, and has a good masking effect on the scratches, scratches, cavities and other flawed surfaces of the leather embryo.

Preferably, after the step (11), the step (22) spraying is also included: the covering paint is sprayed on the flattened leather surface; the covering paint is composed of the following raw materials in parts by weight:

The hiding paint of the present invention adopts the above-mentioned raw materials and strictly controls the parts by weight of each raw material, so that the prepared covering paint has good film-forming properties, good embossing and setting effects, strong adhesion of the material, and can be used for the skin material. Blemishes are adjusted and covered with great coverage. It is also waterproof and anti-stick.

Preferably, after the step (3), the step (4) is further included: placing the engraved leather embryo material at 10-30°C for 10-24h, and then passing through a soft-spinning drum at 10-30°C. Soft 1-2h. Enter the softening drum for softening processing, so that the leather body is softer, the grain surface is more delicate, and the hand feeling of the leather is improved.

Preferably, the step (4) also includes step (5) spraying a hand feeling agent after the step (4): spraying a hand feeling agent on the leather surface after softening processing, and the hand feeling agent is made of the following raw materials in weight percentage:

The hand feel agent of the present invention adopts the above-mentioned raw materials and strictly controls the parts by weight of each raw material, so that the prepared hand feel agent has good stability, can be stored for more than one year, can be used in combination with various resins, and is used as a leather feel agent. The leather is quick-drying and does not slick oil, making the leather soft and high-gloss; and it does not contain organic solvents, which is safe to use and meets the requirements of environmental protection.

The beneficial effects of the invention are: the production process of the invention has simple steps, convenient operation and control, stable quality, high production efficiency, cheap and easy-to-obtain raw materials, high utilization rate of leather materials, low production cost, and large-scale industrial production.

The quality of the finished leather material prepared by the invention is similar to that of the top layer leather material, and can be widely used in the fabrics of shoe materials, bags, handbags, clothing and furniture, etc., greatly increasing the added value of the leather material.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the examples, and the contents mentioned in the embodiments are not intended to limit the present invention.

Example 1

A production process for preparing leather by using a laser laser marking machine, comprising the following steps:

(1) Material selection: use low-grade sheepskin, pigskin or cowhide leather with thorns on the surface as the skin embryo;

(2) Draw patterns: draw patterns through the computer of the laser marking machine, and output the patterns;

(3) Laser engraving: Use a laser marking machine to engrave the output pattern on the surface of the leather with a concave-convex and three-dimensional texture.

In the step (2), the output pattern is a high-resolution image with a resolution of 1000 L/cm.

In the step (3), the process parameters of the laser engraving are as follows: the motor power is 30W, the focal length is 20mm, the cutting width is 10μm, the engraving depth is 0.1mm, and the engraving speed is 400mm/s.

After the step (1), step (11) scraping and mending is also included: use a scraper to scrape and fill the repairing ointment on the surface of the skin embryo, put the scraped skin embryo into an oven to dry and shape, and use a roller to smooth the skin The embryo is pressed flat, the drying temperature is 60°C, and the drying time is 5 minutes.

Described repairing ointment comprises the raw material of following weight portion:

Step (22) spraying is also included after the step (11): spraying a covering paint on the flattened leather surface; the covering paint is composed of the following raw materials in parts by weight:

After the step (3), step (4) softening is also included: place the engraved leather embryo material at 10° C. for 10 hours, and then spin it through a softening drum at 10° C. for 1 hour.

After the step (4), also include the step (5) of spraying a hand feeling agent: spraying a hand feeling agent on the leather surface after softening processing, and the hand feeling agent is made of the raw materials in the following weight percentages:

Example 2

The difference between this embodiment and above-mentioned embodiment 1 is:

In the step (2), the output pattern is a high-resolution image with a resolution of 1500 L/cm.

In the step (3), the process parameters of the laser engraving are as follows: the motor power is 40W, the focal length is 22mm, the cutting width is 50μm, the engraving depth is 0.15mm, and the engraving speed is 450mm/s.

After the step (1), step (11) scraping and mending is also included: use a scraper to scrape and fill the repairing ointment on the surface of the skin embryo, put the scraped skin embryo into an oven to dry and shape, and use a roller to smooth the skin The embryo is pressed flat, the drying temperature is 80°C, and the drying time is 8 minutes.

Described repairing ointment comprises the raw material of following weight portion:

Step (22) spraying is also included after the step (11): spraying a covering paint on the flattened leather surface; the covering paint is composed of the following raw materials in parts by weight:

After the step (3), step (4) softening is also included: place the engraved leather embryo material at 20° C. for 16 hours, and carry out softening by a spinning drum at 20° C. for 1.5 hours.

After the step (4), also include the step (5) of spraying a hand feeling agent: spraying a hand feeling agent on the leather surface after softening processing, and the hand feeling agent is made of the raw materials in the following weight percentages:

Example 3

The difference between this embodiment and above-mentioned embodiment 1 is:

In the step (2), the output pattern is a high-resolution image with a resolution of 2000 L/cm.

In the step (3), the process parameters of the laser engraving are as follows: the motor power is 50W, the focal length is 24mm, the cutting width is 100μm, the engraving depth is 0.2mm, and the engraving speed is 500mm/s.

After the step (1), step (11) scraping and mending is also included: use a scraper to scrape and fill the repairing ointment on the surface of the skin embryo, put the scraped skin embryo into an oven to dry and shape, and use a roller to smooth the skin The embryo is pressed flat, the drying temperature is 100°C, and the drying time is 10 minutes.

Described repairing ointment comprises the raw material of following weight portion:

Step (22) spraying is also included after the step (11): spraying a covering paint on the flattened leather surface; the covering paint is composed of the following raw materials in parts by weight:

After the step (3), step (4) softening is also included: place the engraved leather embryo material at 30° C. for 24 hours, and then spin it through a softening drum at 30° C. for 2 hours.

After the step (4), also include the step (5) of spraying a hand feeling agent: spraying a hand feeling agent on the leather surface after softening processing, and the hand feeling agent is made of the raw materials in the following weight percentages:

Example 4

The difference between this embodiment and above-mentioned embodiment 1 is:

The thickener is a mixture of sodium carboxymethylcellulose, organic bentonite and polyvinylpyrrolidone in a weight ratio of 1:2:1; the wetting agent is made of nonylphenol polyoxyethylene ether and dodecane A mixture of sodium base sulfate in a weight ratio of 1:1.

The leveling agent is a mixture of silicone leveling agent and acrylate leveling agent with a weight ratio of 0.8:1; A mixture of alcohol butyl ether in a weight ratio of 1:0.8:2.5.

Example 5

The difference between this embodiment and the above-mentioned embodiment 2 is:

The thickener is a mixture of sodium carboxymethylcellulose, organic bentonite and polyvinylpyrrolidone in a weight ratio of 1.5:3:1; the wetting agent is made of nonylphenol polyoxyethylene ether and dodecane A mixture of sodium base sulfate in a weight ratio of 1.5:1.

The leveling agent is a mixture of silicone leveling agent and acrylate leveling agent with a weight ratio of 1.0:1; A mixture of alcohol butyl ether in a weight ratio of 1:1:2.

Example 6

The difference between this embodiment and the above-mentioned embodiment 3 is:

The thickener is a mixture of sodium carboxymethylcellulose, organic bentonite and polyvinylpyrrolidone in a weight ratio of 2:4:1; the wetting agent is made of nonylphenol polyoxyethylene ether and dodecane A mixture of sodium base sulfate in a weight ratio of 2:1.

The leveling agent is a mixture of silicone leveling agent and acrylate leveling agent with a weight ratio of 1.2:1; A mixture of alcohol butyl ether in a weight ratio of 1:1.2:1.5.

The above-mentioned embodiments are preferred implementation solutions of the present invention. In addition, the present invention can also be realized in other ways, and any obvious replacements are within the protection scope of the present invention without departing from the concept of the present invention.

Claims (7)

1. A production technique utilizing a laser laser marking machine to prepare leather, is characterized in that: comprises the steps: (1) Material selection: use low-grade sheepskin, pigskin or cowhide leather with thorns on the surface as the skin embryo; (11) Scraping and mending: Use a scraper to scrape and fill the repairing ointment on the surface of the skin embryo, put the scraped skin embryo in an oven to dry and shape, and use a roller light plate to flatten the skin embryo. The drying temperature is 60-100 ℃, the drying time is 5-10min; (22) Spraying: Spray covering paint on the leather surface after flattening; Covering paint is made up of the following raw materials of weight part: 20-40 parts of polyacrylamide, 10-20 parts of polybutadiene resin, 5-15 parts of triglyceride, 6-10 parts of water-based varnish, 6-10 parts of lignocellulose, 4-8 parts of sodium silicate , 2-6 parts of silicon dioxide, 1-5 parts of titanium dioxide, 1-5 parts of heat-expandable hollow microspheres, 4-8 parts of casein, 60-100 parts of water; (2) Draw patterns: draw patterns through the computer of the laser marking machine, and output the patterns; (3) Laser engraving: use a laser laser marking machine to carve the output pattern on the surface of the leather with concave-convex and three-dimensional textures; (4) Spinning and softening: place the engraved leather material at 10-30°C for 10-24h, and at 10-30°C for 1-2h through a spinning drum. 2. A kind of production technology that utilizes laser laser marking machine to prepare leather according to claim 1, it is characterized in that: in described step (2), the output pattern is the height of resolution 1000-2000L/cm resolution image. 3. A kind of production technology that utilizes laser laser marking machine to prepare leather according to claim 1, is characterized in that: in described step (3), the process parameter of laser engraving is: motor power is 30-50W, The focal length is 20-24mm, the cutting width is 10-100μm, the engraving depth is 0.1-0.2mm, and the engraving speed is 400-500mm/s. 4. A kind of production technology that utilizes laser laser marking machine to prepare leather according to claim 1, is characterized in that: described repairing ointment comprises the raw material of following weight portion: 5. a kind of production technology that utilizes laser laser marking machine to prepare leather according to claim 4 is characterized in that: described thickener is made of sodium carboxymethylcellulose, organobentonite and polyvinylpyrrolidone by weight Ratio (1-2): (2-4): 1 mixture; the wetting agent is composed of nonylphenol polyoxyethylene ether and sodium lauryl sulfate in a weight ratio of (1-2): 1 mixture. 6. a kind of production technique that utilizes laser laser marking machine to prepare leather according to claim 4 is characterized in that: described leveling agent is to be by weight ratio ( 0.8-1.2): the mixture of 1 composition; Described film-forming auxiliary agent is by weight ratio 1:(0.8-1.2):(1.5-2.5 ) mixture. 7. A kind of production technology that utilizes laser laser marking machine to prepare leather according to claim 1, it is characterized in that: after described step (4), also comprise step (5) spraying hand feeling agent: after throwing soft processing The surface of the leather material is sprayed with a feel agent, and the feel agent is made of the following raw materials in weight percentage: Oxidized polyethylene wax 10-30% Fatty alcohol polyoxyethylene ether 1-5% Sorbitan Oleate 2-4% Polyoxyethylene sorbitan monostearate 1-3% Modified polysiloxane 0.5-1.5% 60-80 ℃ demineralized water balance.