CN114952012A - Laser processing method applied to denim fabric - Google Patents
Laser processing method applied to denim fabric Download PDFInfo
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- CN114952012A CN114952012A CN202210409507.7A CN202210409507A CN114952012A CN 114952012 A CN114952012 A CN 114952012A CN 202210409507 A CN202210409507 A CN 202210409507A CN 114952012 A CN114952012 A CN 114952012A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/359—Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line
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- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a laser processing method applied to denim fabric, which comprises the following steps: processing the bitmap by photoshop, then importing the bitmap into control software of laser equipment for parameter setting, and then processing patterns of the denim fabric; the bitmap processing comprises the step of newly building a file with 2 pixels in the horizontal direction and the vertical direction in Photoshop; setting two pixels of one opposite corner of the file to be black and setting the other two pixels to be white; selecting a definition pattern in the edit bar and naming the pattern as a plain fill pattern; opening a bitmap for denim fabric laser processing in Photoshop, and newly building a layer in a 'layer frame'; clicking the 'fill' in the 'edit bar' to select a 'plain weave fill pattern'; and selecting a brightening mode in the 'layer mixing option' and storing the bitmap. The invention can solve the problem that the fabric is not awake due to laser point superposition, and can keep better mechanism effect while representing patterns.
Description
Technical Field
The invention relates to the technical field of denim processing, in particular to a laser processing method applied to denim fabric.
Background
CO is commonly used in pattern processing of jean fabric 2 The laser equipment marks the fabric with color blocks with different depths by controlling the laser frequency, when a laser beam irradiates the surface of the fabric, except that a small part of light is reflected, the laser energy can be absorbed by the surface layer of the fabric and quickly converted into heat energy, so that the temperature of the surface layer of the fabric is rapidly increased in a very short time and reaches the gasification temperature of dye, the dye is instantaneously gasified and faded due to the strength of the laser energy to form different depths, thereby realizing the effect of stripping and printing, the strength of the laser is controlled by a gray numerical value in a drawing, the gray numerical value is from 0 to 255, the strongest is a gray numerical value of 0, and the weakest is a gray numerical value of 255. At present, the laser spots emitted in the laser device usually cover 2 weaving points, for example, one inch of denim with 7 yarns in the warp direction has 72, and the laser density is at least 30, which means that each point covers 2, so under the continuous point laser, the laser spots usually overlap 20% or more, the higher the pixel density dpi is, the higher the laser spot overlap is, and the more serious the mechanism coverage of the fabric is. The existing denim fabric has the following problems after being subjected to continuous laser treatment: 1. the patterns on the jean fabric are hard, and the twill weave style of the jean fabric is covered, so that the jean fabric has a pasty visual effect. 2. The denim fabric with high polyester content is subjected to continuous laser treatment, so that the problem of polyester fusion is easily caused, and cloth defects are caused. 3. The high-elasticity denim fabric is subjected to continuous laser treatment, and the spandex yarns on the cloth surface are easily melted and broken, so that the cloth surface is dead and elastic.
Disclosure of Invention
The invention aims to provide a laser processing method applied to denim fabric. The invention can solve the problem that the fabric is not awake due to laser point superposition, and can keep better mechanism effect while representing patterns.
The technical scheme of the invention is as follows: a laser processing method applied to denim fabric is characterized in that a photoshop is used for processing a bitmap, then the bitmap is led into control software of laser equipment for parameter setting, and the denim fabric is processed with patterns according to the set laser equipment; the bitmap processing comprises the following steps:
step one, creating a file with 2 pixels in the horizontal direction and the vertical direction in Photoshop;
setting two pixels of one diagonal of the file to be black, and setting the other two pixels to be white;
step three, selecting a definition pattern in an edit bar and naming the definition pattern as a plain weave filling pattern;
opening a bitmap for denim fabric laser processing in Photoshop, and newly building a layer in a 'layer frame';
clicking the 'filling' in the 'edit bar', and selecting a 'plain weave filling pattern';
step six, selecting a brightening mode in the 'layer mixing option';
and seventhly, storing the bitmap.
In the step two, the pencil tool is selected, the size of the brush is set to be 1 pixel, the front pattern tool is selected, two pixels of one diagonal of the file are set to be black, and the other two pixels are set to be white.
In the laser processing method applied to the jean fabric, the opacity and smoothness of the pencil tool are set to be 100%, and the hardness is set to be 100%.
In the laser processing method applied to the denim fabric, the first pixel is set to be black, the second pixel and the third pixel are set to be white, and the fourth pixel is set to be black in sequence from left to right and from top to bottom.
In the laser processing method applied to the denim fabric, the setting of the parameters in the control software of the laser device comprises setting the pixel density dpi to be 30-70 and setting the single-point pixel dwell time tpx to be 40-75.
In the laser processing method applied to the denim fabric, the setting of the parameters in the control software of the laser device comprises setting the pixel density dpi to be 32 and the single-point pixel dwell time tpx to be 55.
Compared with the prior art, the invention carries out the manufacture of the isolated point modular pattern according to the fabric style, can combine with the original continuous point pattern, realizes the non-overlapping of the laser points, and further realizes the retention of the fabric tissue style while retaining the original wind of the fabric. The laser dot separation drawing method can rapidly manufacture laser patterns according to the mechanism of the cloth cover, solves the problem that the fabric is not awake due to the superposition of laser dots, and keeps better mechanism effect while representing the patterns. When the gray value is low, namely the laser power is high, the laser points are not overlapped on a single point, so that the single point can generate overhigh temperature, the damage degree of single-point fibers can be further reduced, and the problems of fusing of polyester points and damage and dead elasticity of spandex yarns are avoided.
Drawings
FIG. 1 is a schematic view of a file with 2 pixels in horizontal and vertical directions;
FIG. 2 is another schematic diagram of a file with 2 pixels in both horizontal and vertical directions;
FIG. 3 is a continuous dot pattern of denim fabric laser treatment;
FIG. 4 is a diagram of the effect of filling a 'plain weave filling pattern' on a laser-treated bitmap of a denim fabric;
FIG. 5 is a diagonal pixel diagram in another embodiment;
fig. 6 is an effect diagram of filling a twill pixel pattern on a laser-treated bitmap of denim fabric.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
The embodiment is as follows: a laser processing method applied to denim fabric is characterized in that a photoshop is used for processing a bitmap, then the bitmap is led into control software of laser equipment for parameter setting, and the denim fabric is processed with patterns according to the set laser equipment. The main control parameters of the laser device are pattern pixel density dpi and single-point laser stay time tpx, wherein the pixel density dpi is 30 at the lowest and is not more than 70, and the single-point laser stay time tpx is not less than 30 and is not more than 75.
The following description of the denim fabric to be treated, the warp density of the denim fabric: the number of warp yarns per unit length along the vertical direction of the selvedge. Denim is typically in the imperial system with a number of warp yarns per inch. Total warp number: the number of warp yarns in the width of the whole denim can also be calculated by the following formula: total number of warp threads is equal to warp density (root/inch) x width (inch), such as: 7S multiplied by 7S/72 multiplied by 4459-60 'calculated by jean, the warp density of the jean is 72 pieces/inch, the width is 59.5' according to the median, and the total warp number is 72 x-59.5-4284 pieces. Denim fabric is usually coarse twill fabric, yarn count has multiple specifications such as 7 × 7, 7 × 6, 7 × 8, 10 × 7, 10 × 10 and the like, weave structure is generally twill (2/1, 3/1 and 1/3) and broken twill, and radial tightness is greater than weft direction. The size of the laser spot can be adjusted from the new focus by adjusting the distance between the laser head and the working surface, and is usually in the range of 1.5m × 1.5m, 1.2m × 1.2m, 0.8m × 0.8m, and 0.5m × 0.5m.
In this embodiment, bitmap processing is performed by using photoshop, and the bitmap processing method includes the following steps:
step one, creating a file with 2 pixels in the horizontal direction and the vertical direction in Photoshop;
step two, selecting a pencil tool, setting the size of the brush as 1 pixel, setting the opacity and the smoothness as 100%, and setting the hardness as 100%; selecting a 'front pattern' tool, setting two pixels of one diagonal of the file to be black, and setting the other two pixels to be white; for example, as shown in fig. 1, the first pixel is set to black, the second pixel and the third pixel are set to white, and the fourth pixel is set to black in the order from left to right and from top to bottom; of course, to present another effect, reference may be made to fig. 2.
Step three, selecting a definition pattern in an edit bar and naming the definition pattern as a plain weave filling pattern;
opening a bitmap (which is a continuous dot bitmap and is shown in figure 3) for denim fabric laser processing in Photoshop, and newly building a layer in a 'layer frame';
step five, clicking the filling in the editing column, selecting a plain weave filling pattern, filling the plain weave filling pattern on a bitmap of the denim fabric subjected to laser treatment, and obtaining a result shown in fig. 4; in another embodiment, a "plain weave fill pattern" may be set, as shown in fig. 5, to form a twill pixel pattern in such a way that the effect of the "plain weave fill pattern" filled in the laser-treated bitmap of the denim fabric changes, making the bitmap thereof more faded, as shown in fig. 6.
Selecting a brightening mode in the layer mixing option;
step seven, saving bitmap, bmp format, as shown in figure 3
Finally, after the bitmap is prepared, the bitmap is led into control software of a laser device for parameter setting, in the embodiment, the pixel density dpi is set to be 32, the single-point pixel retention time tpx is set to be 55 (if the whiteness of the laser is not enough, higher pixel delicate retention time can be used, and the fabric can also be strengthened by a laser promoter), and the pattern processing is carried out on the denim fabric according to the set laser device.
Therefore, the invention carries out the manufacture of the isolated dot modular pattern according to the fabric style, can combine with the original continuous dot pattern, realizes the non-overlapping of the laser dots, and further realizes the retention of the fabric tissue style while retaining the original wind of the fabric. The laser dot separation drawing method can rapidly manufacture laser patterns according to the mechanism of the cloth cover, solves the problem that the fabric is not awake due to the superposition of laser dots, and keeps better mechanism effect while representing the patterns. When the gray value is low, namely the laser power is high, the laser points are not overlapped on a single point, so that the single point can generate overhigh temperature, the damage degree of single-point fibers can be further reduced, and the problems of fusing of polyester points and damage and dead elasticity of spandex yarns are avoided.
Claims (6)
1. A laser processing method applied to denim fabric is characterized in that a photoshop is used for processing a bitmap, then the bitmap is led into control software of laser equipment for parameter setting, and the denim fabric is processed with patterns according to the set laser equipment; the method is characterized in that: the bitmap processing comprises the following steps:
step one, creating a file with 2 pixels in the horizontal direction and the vertical direction in Photoshop;
setting two pixels of one diagonal of the file to be black, and setting the other two pixels to be white;
step three, selecting a definition pattern in an edit bar and naming the definition pattern as a plain weave filling pattern;
opening a bitmap for denim fabric laser processing in Photoshop, and newly building a layer in a 'layer frame';
step five, clicking the 'filling' in the 'edit bar', and selecting a 'plain weave filling pattern';
selecting a brightening mode in the layer mixing option;
and seventhly, storing the bitmap.
2. The laser treatment method applied to denim fabric according to claim 1, characterized in that: and in the second step, selecting a pencil tool, setting the size of the brush to be 1 pixel, selecting a front pattern tool, setting two pixels of one diagonal of the file to be black, and setting the other two pixels to be white.
3. The laser treatment method applied to denim fabric according to claim 2, characterized in that: the opacity and smoothness of the "pencil" instrument were set to 100% and the hardness was set to 100%.
4. The laser treatment method applied to denim fabric according to claim 2, characterized in that: the first pixel is set to black, the second pixel and the third pixel are set to white, and the fourth pixel is set to black in the order from left to right and from top to bottom.
5. The laser treatment method applied to denim fabric according to claim 1, characterized in that: the parameter settings in the control software of the laser device include setting the pixel density dpi to 30-70 and the single dot pixel dwell time tpx to 40-75.
6. The laser treatment method applied to denim fabric according to claim 1, characterized in that: the parameter settings in the control software of the laser device include setting the pixel density dpi to 32 and the single dot pixel dwell time tpx to 55.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210409507.7A CN114952012B (en) | 2022-04-19 | 2022-04-19 | Laser treatment method applied to jean fabric |
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| CN202210409507.7A CN114952012B (en) | 2022-04-19 | 2022-04-19 | Laser treatment method applied to jean fabric |
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| CN114952012A true CN114952012A (en) | 2022-08-30 |
| CN114952012B CN114952012B (en) | 2023-06-06 |
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Citations (6)
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| US5990444A (en) * | 1995-10-30 | 1999-11-23 | Costin; Darryl J. | Laser method and system of scribing graphics |
| JP2010111071A (en) * | 2008-11-07 | 2010-05-20 | National Printing Bureau | Method for producing gradation pattern and paper having gradation pattern |
| US20190129604A1 (en) * | 2017-10-31 | 2019-05-02 | Levi Strauss & Co. | Laser Finishing Design Tool with Image Preview |
| CN110167708A (en) * | 2016-12-13 | 2019-08-23 | 利惠商业有限公司 | Fabric with the enhancing response characteristic finished to laser |
| CN113302354A (en) * | 2018-11-30 | 2021-08-24 | 利惠商业有限公司 | Shadow neutral 3-D garment rendering |
| CN114309961A (en) * | 2021-12-10 | 2022-04-12 | 深圳泰德激光技术股份有限公司 | Method for laser marking of halftone bitmap |
-
2022
- 2022-04-19 CN CN202210409507.7A patent/CN114952012B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5990444A (en) * | 1995-10-30 | 1999-11-23 | Costin; Darryl J. | Laser method and system of scribing graphics |
| JP2010111071A (en) * | 2008-11-07 | 2010-05-20 | National Printing Bureau | Method for producing gradation pattern and paper having gradation pattern |
| CN110167708A (en) * | 2016-12-13 | 2019-08-23 | 利惠商业有限公司 | Fabric with the enhancing response characteristic finished to laser |
| US20190129604A1 (en) * | 2017-10-31 | 2019-05-02 | Levi Strauss & Co. | Laser Finishing Design Tool with Image Preview |
| CN111565880A (en) * | 2017-10-31 | 2020-08-21 | 利惠商业有限公司 | Laser Finishing Design Tools |
| CN113302354A (en) * | 2018-11-30 | 2021-08-24 | 利惠商业有限公司 | Shadow neutral 3-D garment rendering |
| CN114309961A (en) * | 2021-12-10 | 2022-04-12 | 深圳泰德激光技术股份有限公司 | Method for laser marking of halftone bitmap |
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| CN114952012B (en) | 2023-06-06 |
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