CN113279175A

CN113279175A - Leather printing and dyeing process

Info

Publication number: CN113279175A
Application number: CN202110765979.1A
Authority: CN
Inventors: 袁彬; 曹莲红; 张裕
Original assignee: Nantong Baowei Textile Co ltd
Current assignee: Nantong siyate Textile Co.,Ltd.
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-08-20
Anticipated expiration: 2041-07-07
Also published as: CN113279175B

Abstract

The invention discloses a leather printing and dyeing process, which belongs to the technical field of textile leather printing and dyeing, and is characterized in that a leather winding piece and an elastic extrusion piece are additionally arranged, when leather is printed and dyed, the leather is clamped and rolled left and right by the leather winding piece, the leather can be dip-dyed in the friction movement with the leather winding piece, the printing and dyeing permeability is improved, meanwhile, a plurality of elastic extrusion pieces which are distributed up and down are mutually close to each other and impact and contact the upper end and the lower end of the leather under the action of a magnetic field, the elastic extrusion pieces suck dye and release the dye after contacting the leather, and the dye overflows from the end surface of the leather during extrusion, so that the dye is further promoted to permeate into cracks of the leather, the printing and dyeing effect is improved, and the printing and dyeing time is shortened.

Description

Leather printing and dyeing process

Technical Field

The invention relates to the technical field of textile leather printing and dyeing, in particular to a leather printing and dyeing process.

Background

Leather dyeing is a complex physicochemical process, which is the penetration and combination process of dye molecules to leather fibers, and is the total effect of physical and chemical actions. Throughout the dyeing process, adsorption, diffusion, permeation and fixation are interacting, alternating. Dyeing is an important process in the leather industry and plays an important role, the appearance of leather can be improved, the leather is suitable for the current popular style, the color diversity is reflected, the personalized customization demand is met, the use performance is improved, the added value of the leather is increased to the maximum extent, and the leather is suitable for the requirements of various purposes.

Different from textile cloth, the leather is attached with cracks, dye is coated on the outer surface of the leather during printing and dyeing, the existing common printing and dyeing operation only coats the dye on the surface of the leather, and the dye is difficult to adsorb and permeate on the surface of the leather aiming at some thin and deep cracks, so that the phenomenon of uneven dyeing of the same piece of leather is easily caused.

Therefore, a leather printing and dyeing process is provided to effectively solve the problems in the prior art.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a leather printing and dyeing process, which utilizes left-right rolling friction and up-down extrusion to improve the permeability of dye on the end surface of leather, promote the dye to permeate into cracks of the leather, improve the printing and dyeing effect and shorten the printing and dyeing time compared with the conventional common printing and dyeing method.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a printing and dyeing technology of leather, on the ordinary printing and dyeing basis of prior art, through addding the leather around rolling up piece and elasticity extruded article, when printing and dyeing the leather, utilize the leather to roll up the piece and go on controlling the card book to the leather, the leather can dip-dye in rolling up a friction activity with the leather, improve printing and dyeing permeability, and simultaneously, utilize the effect in magnetic field to make a plurality of elasticity extruded articles that distribute from top to bottom be close to each other and carry out the impact contact to the upper and lower end of leather, the elasticity extruded article inhales the release of dyestuff behind the contact leather, and in the leather terminal surface gas overflow when the extrusion, further promote the dyestuff and permeate in the crackle of leather, improve the printing and dyeing effect, shorten the printing and.

Further, the leather is equipped with two around rolling up the piece, and is a pair of the leather is around rolling up a symmetrical distribution in the left and right sides in dye vat, the leather is around rolling up the piece and including last driving piece and lower around roller spare, go up the driving piece and be connected with external drive arrangement.

Furthermore, go up the driving piece and include the outer drive roller that is connected with external locating rack and the stranded pull wire of cover on locating the outer drive roller is constituteed, the bottom of pull wire is equipped with the flexible position sleeve with leather looks fixed connection.

Further, lower around roller spare includes fixed connection in the movable plate the registration roller, the registration roller bottom is rotated through the mount and is connected with around establishing the roller set, it establishes the clearance around being equipped with between the roller set to wind.

Further, it has a plurality of elasticity swell to distribute on establishing the roller set, the inside packing of elasticity swell has gas, be equipped with fibre fine hair on the outer terminal surface of elasticity swell, pull the in-process about the leather, utilize the leather and around establishing the relative rotation of roller set, and the elasticity swell when playing the protection cushioning effect, still be favorable to improving around establishing the elastic extrusion force between roller set and the leather, be favorable to crowding into in the gap of leather with the dyestuff.

Furthermore, the pair of moving plates are connected in an embedded mode through a connecting plate, the moving plate located below is connected with the bottom in the moving plate in a sliding mode through sliding strips, and a pair of electric push rods connected with one of the sliding strips is arranged on the inner wall of the moving plate.

Furthermore, the elastic extrusion piece comprises a heat conducting rod connected to the moving plate, a heat conducting ball is movably sleeved on the heat conducting rod, the bottom end of the heat conducting ball is connected with an extension spring, the extension spring is sleeved at the outer end of the heat conducting rod and fixedly connected with the moving plate, a plurality of elastic extrusion columns are distributed on the upper end face of the heat conducting ball, the outer end walls of the heat conducting ball which are distributed from top to bottom are respectively coated with magnetic attraction layers with opposite magnetism, and a magnetic field is applied below the dyeing pond.

Furthermore, the elastic extrusion column comprises an extrusion head and an air overflow pipe which are communicated with each other, the air overflow pipe is connected to the heat conduction ball, the side wall of the extrusion head close to one end of the air overflow pipe is provided with a plurality of material guide openings, the air overflow pipe is connected with the inner wall of the outer end of the extrusion head through a compression spring, and the inner wall of the outer end of the extrusion head is provided with an overflow hole.

Furthermore, a plurality of storage tanks communicated with the gas overflow pipe are arranged in the heat conducting ball, gas overflow fillers are arranged in the storage tanks, and a waterproof and breathable film is arranged at the gas overflow pipe.

Furthermore, the air overflow filler comprises an effervescent filler filled in the storage tank, a plurality of hot-melt water bags are doped in the effervescent filler, each hot-melt water bag comprises a hot-melt bag layer and a water solution positioned in the hot-melt bag layer, and the hot-melt bag layer is made of a hot-melt material.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through addding the leather around rolling up piece and elasticity extruded article, when printing and dyeing the leather, utilize the leather to roll up the piece and draw the book about going on the leather, the leather can dip-dye in rolling up a friction activity with the leather, improve the printing and dyeing permeability, and simultaneously, utilize the effect in magnetic field to make a plurality of elasticity extruded articles that distribute from top to bottom be close to each other and carry out the punching press contact to the upper and lower end of leather, the elasticity extruded article inhales the dyestuff and is extruded the release behind the contact leather, improve the contact impact nature of dyestuff between the leather, under the effect that the pressurization is strikeed, the dyestuff is more changed in permeating in the leather crackle, improve the printing and dyeing effect.

(2) The winding in this scheme is provided with the elasticity swell on establishing the roller set, is drawn the book in-process about the leather, utilizes the leather and winds the relative rotation who establishes the roller set, and the elasticity swell is when playing protection cushioning effect, still is favorable to improving around establishing the elastic extrusion force between roller set and the leather, is favorable to in the gap of crowded into the leather with the dyestuff.

(3) This scheme is being applyed repeatedly, the in-process of removing magnetic field, the heat conduction ball that distributes about realizing is in opposite directions, opposite movement, be favorable to playing the stirring effect to the dye, and set up the filler of spilling over in heat conduction ball inside, heating the process to the dye, hot melt water pocket hot melt spills over aqueous solution and effervesces the contact of filler and produces a large amount of gases, gas is along with the dye is extruded the release, release the dye easily by spouting in the leather gap, further promote dye permeation effect, shorten the printing and dyeing time.

Drawings

FIG. 1 is an inside view of the present invention;

FIG. 2 is a schematic diagram of the operation of the present invention;

FIG. 3 is an external perspective view of the present invention;

FIG. 4 is a schematic structural view of the present invention after the dye vat is removed;

FIG. 5 is a schematic view of the structure of the lower wound roll member of the present invention;

FIG. 6 is a schematic view showing the elastic restoring state of the elastic pressing member after the application of a magnetic field according to the present invention;

FIG. 7 is a schematic view of the elastic extrusion of the present invention after the magnetic field is removed and the elastic extrusion is elastically restored;

FIG. 8 is a perspective view of the resilient extrusion of the present invention;

FIG. 9 is a partial cross-sectional view at the resilient extrusion of the present invention;

FIG. 10 is a schematic view showing a part of the internal state of the elastic extrusion member of the present invention after being pressed in contact with leather.

The reference numbers in the figures illustrate:

the device comprises a moving plate 1, a heat conducting rod 2, a heat conducting ball 3, an elastic extrusion column 4, a material extrusion head 401, a material guide port 4011, an air overflow pipe 402, a compression spring 403, a tension spring 5, an outer driving roller 6, a traction wire 7, a positioning roller 8, a winding roller group 9, effervescent fillers 10 and a hot-melting water bag 11.

Detailed Description

In this embodiment 1, the technical solution will be clearly and completely described in conjunction with the disclosed drawings, so that the purpose, technical solution and beneficial effects of the embodiments of the present disclosure will be more clear. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" and similar words are intended to mean that the elements or items listed before the word cover the elements or items listed after the word and their equivalents, without excluding other elements or items. "upper", "lower", "inside", "outside", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example (b):

referring to fig. 1-2, soaking leather in pure water for 1-1.5h, washing the soaked leather, performing steam treatment on the washed leather for 0.5-1h, mounting a leather winding piece in a dye vat loaded with dye, using the leather winding piece to pull the leather left and right, arranging a pair of movable plates 1 distributed above and below the leather in the dye vat, distributing a plurality of elastic extrusions on opposite end surfaces of the pair of movable plates 1, applying a magnetic field below the dye vat, attracting the elastic extrusions above the upper part, repelling the elastic extrusions below the lower part, forcing the elastic extrusions above and below the upper and lower parts of the leather to squeeze the upper and lower ends of the leather, releasing the absorbed dye when contacting the leather, and allowing the dye to overflow from the end surfaces of the leather during squeezing to promote the dye to permeate into cracks of the leather, repeatedly starting and cutting off the magnetic field, and multiple extrusion operations are realized, the leather is matched with the leather to move back and forth left and right on the leather winding piece, and after dyeing, the leather is dried, namely, the leather is dyed and dyed.

Referring to fig. 4-5, two leather winding members are provided, a pair of leather winding members are symmetrically arranged on the left side and the right side of the dyeing tank, each leather winding member is composed of an outer driving roller 6, a traction wire 7, a positioning roller 8 and a winding roller set 9, the upper driving member composed of the outer driving roller 6 and the traction wire 7 is connected with an external driving device, so as to realize the left-right winding function on the leather, the leather connected under one section of the traction wire 7 bypasses a gap of the winding roller set 9 and is connected with the bottom end of the traction wire 7 at the other end, a plurality of elastic bulges are distributed on the winding roller set 9, the inner parts of the elastic bulges are filled with air, fiber fluff is arranged on the outer end surfaces of the elastic bulges, in the process of pulling the leather left side and the right side, the relative rotation between the leather and the winding roller set 9 is utilized, and the elastic bulges play a role of protection and buffering, and are beneficial to improving the elastic extrusion force between the winding roller set 9 and the leather, is beneficial to extruding the dye into the gaps of the leather.

Referring to fig. 1, a pair of moving plates 1 are connected by a connecting plate in an embedded manner, the moving plate 1 located below is connected with the bottom in the moving plate 1 in a sliding manner through a sliding strip, a pair of electric push rods connected with one of the sliding strips is arranged on the inner wall of the moving plate 1, the moving plates 1 and elastic extrusion pieces distributed up and down can move horizontally under the action of the electric push rods, the transverse section of the leather can be improved to be fully contacted with the elastic extrusion pieces, and dye can be uniformly permeated.

Referring to fig. 6-7, the elastic extrusion piece includes a heat conducting rod 2 connected to the movable plate 1, a heat conducting ball 3 is movably sleeved on the heat conducting rod 2, an extension spring 5 is connected to the bottom end of the heat conducting ball 3, the extension spring 5 is sleeved at the outer end of the heat conducting rod 2 and is fixedly connected to the movable plate 1, a plurality of elastic extrusion columns 4 are distributed on the upper end face of the heat conducting ball 3, magnetic attraction layers with opposite magnetism are respectively coated on the outer end walls of the heat conducting balls 3 distributed up and down, the heat conducting rod 2 plays a role in guiding the movement of the heat conducting ball, after a magnetic field is applied below the dyeing tank, the heat conducting balls 3 above and below the leather move close to each other, after the magnetic field is removed, the heat conducting balls 3 distributed up and down elastically reset under the action of the extension spring 5, and thus, the heat conducting balls 3 distributed up and down move in opposite directions and opposite directions are realized, and the dye is favorable for stirring.

Referring to fig. 8, the elastic extrusion column 4 includes an extrusion head 401 and an air overflow pipe 402 which are communicated with each other, the air overflow pipe 402 is connected to the heat conducting ball 3, a plurality of material guiding ports 4011 are formed on a side wall of the extrusion head 401 near one end of the air overflow pipe 402, the air overflow pipe 402 is connected to an inner wall of an outer end of the extrusion head 401 through a compression spring 403, an overflow hole is formed on an inner wall of an outer end of the extrusion head 401, when the heat conducting ball 3 moves up and down, it is beneficial to suck the dye into the extrusion head 401 through the material guiding ports 4011, after the extrusion head 401 contacts with the leather, the air overflow pipe 402 is extruded into the extrusion head 401, the dye is punched and released, and the dye is easily sprayed into a gap of the leather.

Referring to fig. 9-10, a plurality of storage troughs communicated with an air overflow pipe 402 are formed inside a heat conducting ball 3, an air overflow filler is arranged in each storage trough, a waterproof breathable film is arranged at the position of the air overflow pipe 402, the air overflow filler comprises an effervescent filler 10 filled in each storage trough, a plurality of hot-melt water bags 11 are doped in each effervescent filler 10, each hot-melt water bag 11 comprises a hot-melt bag layer and a water solution positioned in each hot-melt bag layer, each effervescent filler 10 is made of an effervescent tablet, each hot-melt bag layer is made of a hot-melt material, and in the printing and dyeing process, the dye is heated, after the dye is heated, the hot-melt bag layer is melted to overflow the aqueous solution, the aqueous solution is contacted with the effervescent filler 10 to generate a large amount of gas, the gas is guided into the extrusion head 401 through the gas overflow pipe 402, the dye is extruded, the dye is further promoted to permeate into cracks of the leather, the printing and dyeing effect is improved, and the printing and dyeing time is shortened.

The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A printing and dyeing process of leather is characterized in that: the method comprises the following steps:

s1, soaking the leather in pure water for 1-1.5h, washing the soaked leather with water, and performing steam treatment on the washed leather for 0.5-1 h;

s2, installing the leather winding piece in the dye vat loaded with the dye, and using the leather winding piece to pull the leather left and right;

s3, arranging a pair of moving plates (1) distributed above and below the leather in the dyeing tank, distributing a plurality of elastic extrusion pieces on the opposite end surfaces of the pair of moving plates (1), applying a magnetic field below the dyeing tank to attract the elastic extrusion pieces above and repel the elastic extrusion pieces below, and forcing the elastic extrusion pieces distributed up and down to extrude the upper and lower ends of the leather;

s4, the dye is absorbed by the elastic extrusion piece and released when contacting the leather, and the end face of the leather is aerated when being extruded, so that the dye is promoted to permeate into the cracks of the leather;

s5, repeatedly starting and disconnecting the magnetic field to realize multiple times of extrusion operation, moving the leather on the leather winding piece back and forth left and right in a matching manner, and drying the leather after dyeing to finish the printing and dyeing of the leather;

the elastic extrusion piece comprises a heat conducting rod (2) connected to a moving plate (1), a heat conducting ball (3) is movably sleeved on the heat conducting rod (2), a plurality of elastic extrusion columns (4) are distributed on the upper end face of the heat conducting ball (3), the elastic extrusion columns (4) comprise an extrusion head (401) and an air overflow pipe (402) which are communicated with each other, the air overflow pipe (402) is connected to the heat conducting ball (3), a plurality of storage troughs communicated with the air overflow pipe (402) are formed in the heat conducting ball (3), air overflow fillers are arranged in the storage troughs and comprise effervescent fillers (10) filled in the storage troughs, a plurality of hot-melt water bags (11) are doped in the effervescent fillers (10), and the hot-melt water bags (11) comprise hot-melt bag layers and aqueous solutions located in the hot-melt bag layers.

2. The process of printing and dyeing leather according to claim 1, wherein: the leather is equipped with two around rolling up the piece, and is a pair of the leather is around rolling up a symmetrical distribution in the left and right sides in dye vat, the leather is around rolling up the piece and including last driving piece and lower around the roller spare, it is connected with external drive arrangement to go up the driving piece.

3. The leather printing and dyeing process according to claim 2, characterized in that: go up the driving piece and include outer drive roller (6) that are connected with external locating rack and locate stranded haulage silk (7) on outer drive roller (6) with the cover and constitute, the bottom of haulage silk (7) is equipped with the flexible position sleeve with leather looks fixed connection.

4. A process according to claim 3, characterized in that: lower around roller spare includes registration roller (8) of fixed connection in movable plate (1), registration roller (8) bottom is rotated through the mount and is connected with around establishing roller set (9), it establishes the clearance around being equipped with between roller set (9) to wind.

5. The leather printing and dyeing process according to claim 4, characterized in that: a plurality of elastic bulges are distributed on the winding roller set (9), gas is filled in the elastic bulges, and fiber fluff is arranged on the outer end face of each elastic bulge.

6. The process of printing and dyeing leather according to claim 1, wherein: the pair of movable plates (1) are connected in an embedded mode through a connecting plate, the movable plate (1) located below is connected with the bottom in the movable plate (1) in a sliding mode through sliding strips, and a pair of electric push rods connected with one of the sliding strips is arranged on the inner wall of the movable plate (1).

7. The process of printing and dyeing leather according to claim 1, wherein: the bottom end of the heat conduction ball (3) is connected with an extension spring (5), the outer end of the heat conduction rod (2) is sleeved with the extension spring (5) and is fixedly connected with the movable plate (1), and the outer end walls of the heat conduction balls (3) which are distributed up and down are respectively coated with magnetic absorption layers with opposite magnetism.

8. The process of printing and dyeing leather according to claim 1, wherein: the material-overflowing device is characterized in that a plurality of material guide ports (4011) are formed in the side wall of one end, close to the material-overflowing pipe (402), of the material-extruding head (401), the material-overflowing pipe (402) is connected with the inner wall of the outer end of the material-extruding head (401) through a compression spring (403), and material-overflowing holes are formed in the inner wall of the outer end of the material-extruding head (401).

9. The process of printing and dyeing leather according to claim 8, wherein: a waterproof breathable film is arranged at the position of the gas overflow pipe (402).