The production method of be full of cracks sense leather
the application is application number is 2014103166653, and denomination of invention is " a kind of production method of the sense leather that chaps ", and the applying date is the divisional application of the application for a patent for invention of 2014-07-06.
Technical field
The present invention relates to a kind of production method of leather, particularly relate to a kind of production method of the sense leather that chaps.
Background technology
Batik is an ancient long art, and widespread, in manual textile dyeing technology among the people, is in fact the fabric resisting printing technology of folk tradition.Along with the raising of people's living standard, also no longer single color is satisfied with to the requirement of leather wear, has therefore also occurred the batik of leather.
The batik method of so-called leather, utilize wax as resist agent just, it is brushed in fusing on leather, forms dyeing-resisted layer, then through Crack handling, dye again, make dyestuff enter in leather by crackle, there is no the place of crackle owing to being covered by wax, therefore remain and original stay white or ground colour.Battik, the decalcomania obtained on leather by upper dye part and the aberration do not gone up between dye part just.But people, through various trial, expect the characteristic that can reach batik, but fail all the time to obtain meticulous wax line effect.
Beeswax pliability is high, and viscosity is large, and resist printing is effective, rubs without putting forth effort, and dyestuff can not penetrate into leather surface easily and get on, and therefore wax line is not obvious; And paraffin quality conventional in wax-dyeing process is hard, be easy to split, form obvious wax line, but adhesion strength is poor; THE VISCOSITY OF ROSINS is large, and easily cracked, anti-metachromia is good, in prior art, someone adopts above three kinds to carry out the composite blended wax that obtains and carry out batik, but its batik effect is still undesirable, can not obtain rough wax line and meticulous wax line, especially meticulous wax line effect is very undesirable simultaneously.
Along with the raising gradually of people's living standard and consumption idea, the range of application of leather is more and more wider, and people more and more do not meet pattern, the pattern of conventional leather.Generally adopt embossing or cracking resin for synthesizing to obtain cracking patterns leather in prior art, but through the pattern visual weak effect that embossing process obtains, and the complex process equipment that embossing needs, and cracking resin for synthesizing to shrink the cracking patterns fineness obtained poor.
Summary of the invention
For solving the problem, the invention provides a kind of production method of simple be full of cracks sense leather, it can give leather be full of cracks sense by dyeing, and decorative pattern is meticulous.
Chap and feel a production method for leather, it is characterized in that, described method is carried out according to the following step,
(1) select materials, leather pre-treatment;
(2) dewaxing: cerate is melted;
(3) print wax: by fusing wax liquid by serigraphy on leather;
(4) dye: the leather ACID DYES after printing wax liquid is dyeed, utilizes different rotary drum rotating speed to form segmentation crack to the impact of wax line;
(5) dewax: rotary drum falls soft, in carbon tetrachloride, then remove remaining wax;
(6) arrange: extension dries dry, then brushes protective layer.
Preferably, (1) selects crown leather, carries out degreasing, tanning process, then carries out process to leather surface and forms micropore;
(2) dewaxing: cerate is warming up to 80 DEG C with the speed of 0.5 DEG C/min, slowly stirs, is then cooled to 65 DEG C with the speed of 0.5 DEG C/min; The complex wax that described cerate is paraffin, beeswax, rosin, sodium silicate, organic silicon modified by polyether, alkyl-modified organosiloxane, Tissuemat E are formed; More preferably paraffin, beeswax, rosin, sodium silicate, organic silicon modified by polyether, alkyl-modified organosiloxane, Tissuemat E form complex wax with weight ratio 65:18:8:3:2:2:2.
(3) wax is printed: first design required pattern with computer, determine the position of global pattern, select 120 object silk screens, and prepare silk screen as requested, be placed on by the leather of ironing in machine table case, then with silk screen, cerate be printed on leather surface;
(4) dye: leather is placed in the rotary drum that 2wt% ACID DYES is housed, bath raio 1:150, temperature 55 DEG C, 6 revs/min, turn 5min and stop 5min, after dyeing time is 60min, improving rotary drum rotating speed is 20 revs/min, and the cerate of printing is chapped further, terminates dyeing after turning 10min;
(5) dewax: rotary drum falls soft, in carbon tetrachloride, then remove remaining wax;
(6) arrange: extension dries dry, then brushes protective layer.
More preferably, adopt acid lipase enzyme and degreasing agent to carry out ungrease treatment in described step (1), preferably adopt acid lipase enzyme and degreasing agent at room temperature to carry out ungrease treatment further; bath raio 1:1-1.5; first add acid lipase enzyme 1wt%; rotate 1.5 hours, then add degreasing agent 1g/L, rotate 45min; Tanning adopts glucose method configuration Chrome Tanning Liquor to carry out tanning; At leather surface by the solution left standstill process 30min brushing lipase, protease mass ratio is 3:1, form micropore to make the surface of leather.
Described protective layer is formed by polyurethane.
The present invention by increasing sodium silicate, organic silicon modified by polyether, alkyl-modified organosiloxane and Tissuemat E in cerate, optimize wax liquid mobility under molten state, make the cohesiveness of wax liquid and leather surface, both dewaxed after having prevented from dyeing difficulty, avoid again when producing wax line, wax comes off from leather surface, and can not there is bubble in the wax liquid formed, effectively shorten and boil wax temperature, boil the wax time, improve the quality of dewaxing.
In leather pre-treatment, adopt ferment treatment to make leather surface form micropore, improve the coloring effect of leather.And protective polyurethane layer is brushed after dyeing completes, the Color of protection leather is not destroyed.
On the other hand, the present invention by the intermittent rotary of rotary drum, progressively forms meticulous wax line while dyeing, to obtain exquisite be full of cracks sense leather.
The concentration occurred in present specification, specification digest, claims, wt% is the percentage by weight relative to fabric, and all the other are mass concentration, and percentage is weight percentage.
Detailed description of the invention
Illustrate the present invention further below in conjunction with specific embodiment, but protection scope of the present invention is not limited thereto.
embodiment 1:
(1) crown leather is selected, adopt acid lipase enzyme and degreasing agent at room temperature to carry out ungrease treatment; bath raio 1:1; first add acid lipase enzyme 1wt%; rotates 1.5 hours, then add degreasing agent 1g/L, rotate 45min, adopt glucose method configuration Chrome Tanning Liquor to carry out tanning process; be then the solution left standstill process 30min of 3:1 at leather surface by brushing lipase, protease mass ratio, to make the surface formation micropore of leather;
(2) dewaxing: cerate is melted; The process conditions of dewaxing are that cerate is warming up to 80 DEG C with the speed of 0.5 DEG C/min, slowly stir, and are then cooled to 65 DEG C with the speed of 0.5 DEG C/min; Described cerate is paraffin, beeswax, rosin, sodium silicate, organic silicon modified by polyether, alkyl-modified organosiloxane, Tissuemat E form with weight ratio 65:18:8:3:2:2:2;
(3) wax is printed: first design required pattern with computer, determine the position of global pattern, select 120 object silk screens, and prepare silk screen as requested, be placed on by the leather of ironing in machine table case, then with silk screen, cerate be printed on leather surface;
(4) dye: the leather ACID DYES after printing wax liquid is dyeed, forms segmentation crack; Dyeing condition be leather is placed on 2wt% ACID DYES is housed rotary drum in; bath raio 1:150; temperature 55 DEG C; 6 revs/min; turn 5min and stop 5min, after dyeing time is 60min, improving rotary drum rotating speed is 20 revs/min; the cerate of printing is chapped further, terminates dyeing after turning 10min.
(5) dewax: rotary drum falls soft, in carbon tetrachloride, then remove remaining wax;
(6) arrange: extension dries dry, then brushes protective polyurethane layer.
Rotary drum forms meticulous segmentation crack at the low rotational speed, and after raising rotating speed, wax line extends further, therefore can obtain comparatively rough wax line, and two kinds of wax lines compare, and produces visual sense of beauty strongly.