CN112572009A - Surface treatment method for leather for automobile seat - Google Patents
Surface treatment method for leather for automobile seat Download PDFInfo
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- CN112572009A CN112572009A CN202011626193.3A CN202011626193A CN112572009A CN 112572009 A CN112572009 A CN 112572009A CN 202011626193 A CN202011626193 A CN 202011626193A CN 112572009 A CN112572009 A CN 112572009A
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- leather
- printing
- printing position
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers
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- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention provides a surface treatment method of leather for automobile seats, which comprises the following steps: s1, preprocessing the leather; s2, a step of transfer printing on the surface of the leather; and S3, coating a protective film on the surface of the printing. The surface treatment method for the leather for the automobile seat, provided by the invention, has the advantages that the printed pattern is firmly attached, the attractiveness is high, the problem of falling of the edge of the printed pattern caused by air or pollutants entering the edge can be effectively solved, the maintenance is convenient, and the service life of the seat is prolonged.
Description
Technical Field
The invention relates to the technical field of automobile refitting and interior decoration processing, in particular to a surface treatment method for leather for an automobile seat.
Background
Leather is often used as an interior trim material in the production of vehicle refitting and interior trim processes, and leather can be used as a surface material in locations such as seats, steering wheels, center console surfaces, and the like. With the increasing demands of people on the interior decoration and aesthetic appearance of vehicles, printing treatment on the surface of a center console or a seat is also provided. In the prior art, leather surface printing technology mainly comprises two major types, one is screen printing, and the other is transfer printing. For manufacturers in the fields of automobile refitting and interior processing, the transfer printing mode is generally adopted because most of the printing is local small in area. According to the transfer printing scheme in the prior art, after a printed pattern is formed, the problems of poor pattern firmness, easiness in falling and the like exist, the attractiveness of the leather interior is reduced, and inconvenience is brought to a user.
Disclosure of Invention
The invention aims to provide a surface treatment method for leather for automobile seats.
The invention provides a surface treatment method of leather for automobile seats, which comprises the following steps: s1, preprocessing the leather; s2, a step of transfer printing on the surface of the leather; and S3, coating a protective film on the surface of the printing.
The step S2 for performing transfer printing on the surface of the leather comprises the following steps: s21, sticking a printing transfer film on the printing position; s22, pressing the printed transfer film at the position; s23, a step of cooling the printing position; s23 is a step for peeling off the transfer base paper. The S1 is used for the step of preprocessing the leather, and comprises the following steps: s11, determining the printing position by the following method: s111, printing a cutting template with a hollow-out printing position according to a design drawing stored in a computer; s112, the cutting template is closely attached to the surface of the leather material, the leather material is cut along the peripheral edge of the cutting template, and therefore the area corresponding to the hollowed-out structure in the formed cut leather material is the printing position. After the step of S11 for determining the printing position, the method further includes the following steps: s12 is used for the step of carrying out the recess processing at the printing position, and specifically comprises the following steps: s121, coating polyurethane resin on the back surface of the leather material at a position corresponding to the printing position, wherein the coating thickness is 250-400 mu m; s122, embossing at the printing position by using a leather embossing machine, and forming a concave part consistent with the shape of the periphery of the printing in the printing position area, wherein the thickness difference between the concave part and the surface of the leather is 300-500 mu m. After the step of S11 for determining the printing position, the method further includes the following steps: s13 is used for the step of roughening treatment at the printing position, and specifically comprises the following steps: and putting the leather combined with the cutting template into a vacuum plasma cleaning machine, and roughening the surface of the leather by using argon plasma. After the step of S11 for determining the printing position, the method further includes the following steps: s14 is used for removing residual butadiene resin at the printing position, and specifically comprises the steps of carrying out plasma cleaning treatment on the leather by using mixed plasma of sulfur hexafluoride and oxygen, so as to remove residual butadiene resin in the leather; the mixing ratio of the sulfur hexafluoride to the oxygen is 4: 6. after the step of S11 for determining the printing position, the method further includes the following steps: s15 is used for removing residual wax agent at the printing position, and the method specifically comprises the following steps: putting the leather combined with the cutting template into a vacuum plasma cleaning machine, and performing plasma cleaning treatment on the leather by using plasma generated by mixing oxygen and argon so as to remove residual wax agent in the leather; the mixing ratio of the oxygen to the argon is 8: 2. After the step of determining the printing position in S11, a step of pre-drying the leather in S16 is also included.
The surface treatment method for the leather for the automobile seat, provided by the invention, has the advantages that the printed pattern is firmly attached, the attractiveness is high, the problem of falling of the edge of the printed pattern caused by air or pollutants entering the edge can be effectively solved, the maintenance is convenient, and the service life of the seat is prolonged.
Drawings
FIG. 1 is a schematic view showing the structure of a leather material, a printed pattern and a protective film in a surface treatment method of leather for automobile seats according to an embodiment of the present invention;
FIG. 2 is a schematic view of a leather material, a cutting template and a hollow structure in the method for surface treatment of leather for automobile seats according to the embodiment of the present invention;
FIG. 3 is a schematic view of the steps of a surface treatment method for leather for automobile seats according to an embodiment of the present invention;
FIG. 4 is a schematic view showing a step of transfer printing on the surface of the leather in the surface treatment method for leather for automobile seats according to the embodiment of the present invention;
fig. 5 is a schematic view illustrating a step of pretreating the leather in the surface treatment method for leather for automobile seats according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3, the present embodiment provides a surface treatment method for leather for automobile seats, comprising the steps of:
s1 is used for carrying out pretreatment on the leather 1;
s2, a step of transfer printing on the surface of the leather 1;
s3 is a step of coating the protective film 3 on the surface of the stamp.
As can be understood by those skilled in the art, because most of the prints in the automotive interior leather 1 are small-area partial prints, in an automotive manufacturing plant or a refitted interior processing plant, the purchased leather 1 raw material is usually the leather 1 without the prints, and after the leather 1 is cut, the positions of the prints are determined. As shown in fig. 1, after the printing process is finished, a film is covered on the surface of the leather 1, the film is tightly combined with the surface of the leather 1 and the printing surface and covers the whole surface of the leather 1, so that the printing 2 is protected, the combination of the film and the surface of the leather 1 is firmer, and the phenomenon that the printing 2 is bonded with the edge to enter air or pollutants, so that the printing 2 falls off and the appearance is affected is avoided.
As shown in fig. 4, the step S2 of performing transfer printing on the surface of the leather 1 includes:
s21, sticking a printing transfer film on the printing position;
s22, pressing the printed transfer film at the position;
s23, a step of cooling the printing position;
s23 is a step for peeling off the transfer base paper.
As will be understood by those skilled in the art, the printing transfer film comprises a base paper, a pattern is printed on the base paper, and a binder is attached to lines of the pattern, so that when the printing transfer film is attached to a printing position of the leather 1 and then is subjected to a pressing process and a cooling process, pigments on the base paper are bonded to the surface of the leather 1 by the binder, the base paper and the pigments are separated, and the base paper is removed to complete the transfer printing.
As shown in fig. 5, the step S1 for preprocessing the leather 1 includes:
s11, determining a printing position; as can be understood by those skilled in the art, in the workshop of vehicle refitting and interior trim processing, only the small-area local position of the cut leather 1 is printed, so that the printing position of the leather 1 needs to be accurately determined, and after the interior trim is installed by using the leather 1, the pattern is consistent with the designed position, and the interior trim engineering effect and the aesthetic degree are ensured.
As shown in fig. 2, the surface treatment method for leather for automobile seats provided in this embodiment determines the printing position by the following method:
s111, printing a cutting template 4 with a hollow-out printing position according to a design drawing stored in a computer;
s112, the cutting template 4 is closely attached to the surface of the leather 1, the leather 1 is cut along the peripheral edge of the cutting template 4, and therefore the area corresponding to the hollowed-out structure in the formed cut leather 1 is the printing position.
As can be understood by those skilled in the art, during the step of performing the transfer printing on the surface of the leather 1, the cutting template 4 and the leather 1 are kept in a close fit state all the time until the cutting template 4 is separated from the leather 1 after the transfer printing is completed.
As shown in fig. 5, after the step of S11 for determining the printing position, the method further includes the following steps:
s12 is a step for performing a recess process at the stamp position.
The step of S12 for performing a recess process at the printing position includes:
s121, coating polyurethane resin on the position, corresponding to the printing position, of the back surface of the leather 1, wherein the coating thickness is 250-400 mu m;
s122, embossing at the printing position by using an embossing machine for the leather 1, and forming a concave part with the same shape as the periphery of the printing 2 in the printing position area, wherein the thickness difference between the concave part and the surface of the leather 1 is 300-500 mu m.
As can be understood by those skilled in the art, after the concave part is formed at the printing position, the pattern of the transfer printing is formed at the bottom of the concave part, and the side edge of the transfer printing is just jointed with the inner side wall of the concave part, so that the problem that the edge of the pattern of the printing 3 enters air or pollutants to cause the falling of the printing 2 can be effectively avoided.
As shown in fig. 5, after the step of S11 for determining the printing position, the method further includes the following steps:
s13 is a step for performing roughening processing at the printing position.
S13 is used for carrying out roughening treatment on the printing position, and comprises the steps of putting the leather 1 combined with the cutting template 4 into a vacuum plasma cleaning machine, and carrying out roughening treatment on the surface of the leather 1 by using argon plasma, so that the roughness of the surface of the printing position is improved, and the firmness of the printing 2 is further improved. As can be understood by those skilled in the art, the particles generated after argon ionization are relatively heavy, and the kinetic energy of the argon ions under the action of the electric field is obviously higher than that of the active gas, so that the roughening effect is better when argon plasma is used for roughening the surface of the leather 1.
As shown in fig. 5, after the step of S11 for determining the printing position, the method further includes the following steps:
s14 is a step for removing residual butadiene resin at the stamp position.
After the step of S11 for determining the printing position, a step for removing residual butadiene resin at the printing position is further included.
The step for removing residual butadiene resin at the printing position is to bondThe leather 1 with the cutting template 4 is put into a vacuum plasma cleaning machine, and sulfur hexafluoride SF is used6And oxygen O2The mixed plasma of (2) performs a plasma cleaning process on the leather 1, thereby removing the butadiene resin remaining in the leather 1.
The mixing ratio of the sulfur hexafluoride SF6 to the oxygen O2 is 4: 6.
it will be understood by those skilled in the art that the leather 1 is processed in a plurality of steps in the manufacturing factory of the leather 1, in which butadiene resin is used for coating, for example, a large amount of butadiene resin remains at the printing position, which causes the base paper to be difficult to separate from the leather 1 and to be difficult to remove after the transfer printing is completed, so that the leather 1 at the printing position needs to be cleaned in advance to remove the butadiene resin at the printing position, so that the base paper can be removed smoothly after the transfer printing is completed. As can be understood by those skilled in the art, the plasma cleaning machine for removing the residual butadiene resin has the advantages of rapid and reliable treatment process, uniform and stable surface treatment effect, low cost and good environmental protection performance. The sulfur hexafluoride SF6 and the oxygen O2 both have high activity, and are used according to the volume ratio of 4: 6 to remove the butadiene resin, the plasma generated by the mixed gas has the best cleaning effect.
After the step of determining the printing position of S11, the method further comprises the step of removing residual wax agent at the printing position of S15;
the step for removing the residual wax agent at the printing position is to place the leather 1 combined with the cutting template 4 into a vacuum plasma cleaning machine and use oxygen O2And plasma generated by mixing with argon carries out plasma cleaning treatment on the leather 1, so that residual wax agent in the leather 1 is removed.
The oxygen gas O2The mixing ratio of the argon Ar and the argon is 8:2 by volume.
Oxygen O is understood by those skilled in the art2The generated plasma has higher activity but oxygen O2The generated plasma particles are smaller, the energy is lower, the bond breaking and bombardment capability is limited, and the plasma particles generated by argon Ar are larger and have higher performanceThe energy of the plasma is stronger in bond breaking and bombardment capability, and the oxygen O2 and the argon Ar are mixed according to the volume ratio of 8:2, so that the plasma can be ensured to have better activity and larger bond breaking and bombardment capability, and the wax agent can be removed more thoroughly. As can be understood by those skilled in the art, the leather 1 will undergo a plurality of processes in the manufacturing factory of the leather 1, wherein a wax agent is used for coating, but if the surface of the leather 1 at the printing position is covered with the wax agent, the pattern of the printing 2 is difficult to transfer to the surface of the leather 1, and when the base paper is removed, the pattern of the printing 2 is damaged by being removed along with the base paper; therefore, the step of removing the residual wax agent at the printing position is required to be carried out before the transfer printing so as to ensure the printing effect.
As shown in fig. 5, after the step of determining the printing position in S11, a step of pre-drying the leather 1 in S16 is further included. As can be understood by those skilled in the art, if the humidity of the leather 1 at the printing position is high, the printed pattern is difficult to transfer to the surface of the leather 1, and when the base paper is removed, the printed pattern can be removed along with the base paper, so that the pattern of the printing 2 is damaged; therefore, the leather 1 needs to be pre-dried before transfer printing so as to ensure the printing effect.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A surface treatment method for leather for automobile seats is characterized by comprising the following steps:
s1, preprocessing the leather;
s2, a step of transfer printing on the surface of the leather;
and S3, coating a protective film on the surface of the printing.
2. The surface treatment method of leather for automobile seats as claimed in claim 1, wherein the step of S2 for transfer printing on the surface of the leather comprises:
s21, sticking a printing transfer film on the printing position;
s22, pressing the printed transfer film at the position;
s23, a step of cooling the printing position;
s23 is a step for peeling off the transfer base paper.
3. The surface treatment method of leather for automobile seats as claimed in claim 2, wherein the step of S1 for pre-treating the leather comprises:
s11 is used for determining the printing position.
4. The surface treatment method of leather for automobile seats according to claim 3, wherein the printing position is determined by the following method:
s111, printing a cutting template with a hollow-out printing position according to a design drawing stored in a computer;
s112, the cutting template is closely attached to the surface of the leather material, the leather material is cut along the peripheral edge of the cutting template, and therefore the area corresponding to the hollowed-out structure in the formed cut leather material is the printing position.
5. The surface treatment method of leather for automobile seats as claimed in claim 4, further comprising the steps of, after the step of S11 for determining the stamp position:
s12 is used for the step of carrying out the recess processing at the printing position, and specifically comprises the following steps:
s121, coating polyurethane resin on the back surface of the leather material at a position corresponding to the printing position, wherein the coating thickness is 250-400 mu m;
s122, embossing at the printing position by using a leather embossing machine, and forming a concave part consistent with the shape of the periphery of the printing in the printing position area, wherein the thickness difference between the concave part and the surface of the leather is 300-500 mu m.
6. The surface treatment method of leather for automobile seats as claimed in claim 4, further comprising the steps of, after the step of S11 for determining the stamp position:
s13 is used for the step of roughening treatment at the printing position, and specifically comprises the following steps:
and S13, performing roughening treatment on the printing position, wherein the roughening treatment comprises the steps of putting the leather combined with the cutting template into a vacuum plasma cleaning machine, and performing roughening treatment on the surface of the leather by using argon plasma.
7. The surface treatment method of leather for automobile seats as claimed in claim 4, further comprising the steps of, after the step of S11 for determining the stamp position:
s14 Process for removing residual butadiene resin at the printing position, specifically comprising
Putting the leather combined with the cutting template into a vacuum plasma cleaning machine, and performing plasma cleaning treatment on the leather by using mixed plasma of sulfur hexafluoride and oxygen so as to remove residual butadiene resin in the leather; the mixing ratio of the sulfur hexafluoride to the oxygen is 4: 6.
8. the surface treatment method of leather for automobile seats as claimed in claim 4, further comprising the steps of, after the step of S11 for determining the stamp position:
s15 is used for removing residual wax agent at the printing position, and the method specifically comprises the following steps: putting the leather combined with the cutting template into a vacuum plasma cleaning machine, and performing plasma cleaning treatment on the leather by using plasma generated by mixing oxygen and argon so as to remove residual wax agent in the leather; the mixing ratio of the oxygen to the argon is 8: 2.
9. The surface treatment method of leather for automobile seats as claimed in claim 4, further comprising a step of S16 for pre-drying the leather after the step of S11 for determining the embossing position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626193.3A CN112572009A (en) | 2020-12-30 | 2020-12-30 | Surface treatment method for leather for automobile seat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626193.3A CN112572009A (en) | 2020-12-30 | 2020-12-30 | Surface treatment method for leather for automobile seat |
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| CN112572009A true CN112572009A (en) | 2021-03-30 |
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| CN202011626193.3A Pending CN112572009A (en) | 2020-12-30 | 2020-12-30 | Surface treatment method for leather for automobile seat |
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Citations (10)
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|---|---|---|---|---|
| CN1049389A (en) * | 1990-09-04 | 1991-02-20 | 季峰 | The dyeing of leather, printing method and equipment |
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| CN102296283A (en) * | 2010-06-24 | 2011-12-28 | 苏州卫鹏机电科技有限公司 | Method for treating surfaces of shoe materials |
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2020
- 2020-12-30 CN CN202011626193.3A patent/CN112572009A/en active Pending
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| CN104742550A (en) * | 2015-04-13 | 2015-07-01 | 叶光明 | Anti-static and brightening fabric transfer printing and hot stamping method |
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