A kind of release liners patterned roll and preparation method thereofTechnical field
The present invention relates to the leatheret manufacture field, be specifically related to a kind of release liners patterned roll and preparation method thereof.
Background technology
In the leatheret processing and manufacturing process, need use release liners as carrier and interim mould.Release liners is the very high extraordinary industrial paper of a kind of added value, at present, has only a few countries such as Japan, the U.S., Italy can produce the used for artificial leather release liners that meets the processing and manufacturing requirement in the world.
Application number a kind of synthetic leather release liners that has been 200810079831.7 disclosure of the Invention arranges a multi-functional layer between base material and release layer, component and the parts by weight thereof of described multi-functional layer are: bonding agent 40～95; Water 5～60; Surfactant 1～5; The formation material of described release layer comprises alkyd modified silicones, melamine resin and acid catalyst.
Application number a kind of job operation of ultrasonic wave embossed type release liners method leatheret that has been 200910026808.6 disclosure of the Invention at first disposes embryo raw material at the bottom of the leatheret, and fabric wherein: 100 parts of PVC paste resins, DOP are 60-70 part, CaCO3Be 20-30 part, the potassium zinc heat stabilizer is 5-8 part; The middle level foaming layer: 100 parts of PVC paste resins, DOP are 65-80 part, CaCO3Be 150-250 part, the potassium zinc heat stabilizer is 4-8 part, and the AC high-temperature foaming agent is 8-16 part; Bed material tack coat: 100 parts of PVC paste resins, DOP50-60 part, CaCO3Be 5-20 part, the potassium zinc heat stabilizer is 2-5 part; By above-mentioned prescription the raw material that configures is stirred, is made into embryo at the bottom of the leatheret again, afterwards ultrasonic wave embossed both finished product.
The surface structure of release liners has determined the structure of leatheret leather surface, and the release liners surface can utilize patterned roll to give the floral designs of simulation corium, thereby makes the leatheret surface for preparing have the floral designs that can compare favourably with corium.
Through the years of researches exploitation, China's used for artificial leather release liners technology does not still pass a test, long-term dependence on import, especially produce the required patterned roll of used for artificial leather release liners, remain in a lot of problems at aspects such as manufacturing technology and surperficial special processings, be difficult to satisfy market demand, the patterned roll of some type still needs from external import.
Application number is that 200420083490.8 utility model discloses a kind of modified form knurling rolls, relates to surface of plastic product forming machine technical field, refers to a kind of machining tool at leatheret, plasthetics compacting floral designs especially.Be achieved through the following technical solutions: tressel is located at the knurling rolls on the frame, and knurling rolls are made up of air bag, tie insert roller and patterned roll, and the balloon tamponade of tubular coats the line roller of blossoming outside the tie insert roller among the tie insert roller.Be provided with the bleeder vent that leads to patterned roll between the tie insert roller, between air bag and tie insert roller, the bleed-off passage that leads to outside the frame also arranged.Patterned roll is that the breathable material is one-body molded.
Along with the raising of people's quality of the life, the pattern kind of leatheret product is more and more, and also more and more higher to the surface effect requirement of leatheret product pattern, therefore, various types of leatheret release liners patterned roll are developed in an urgent demand.
Summary of the invention
The invention provides a kind of release liners with patterned roll and preparation method thereof, have surfaceness behind the seamless steel rider process chemical corrosion corrosion, make the patterned roll projection smooth surface of preparing, recess part micro-rough.
A kind of release liners preparation method of patterned roll, may further comprise the steps: seamless steel rider is obtained glossy surface through polishing, glossy surface at seamless steel rider applies photoresists, oven dry photoresists and in presumptive area exposure, then through develop, after the solid film of chemistry and hot post bake handle, with chemical corrosion corrosion unintended areas, form coarse concave face, remove photoresists then, the decorative chromium plating layer namely gets patterned roll.
At first, seamless steel rider is carried out polishing obtain glossy surface, be convenient to the even coating of photoresists, then at seamless steel roller faces spraying photoresists, form uniform dry-film resist, shine with ultraviolet light source, make the dry-film resist of seamless steel roller faces by image exposure, develop allows the dry-film resist of seamless steel roller faces present floral designs then, and dry-film resist is exposed to partly solidified under the ultraviolet light source, has certain resistance to corrosion, can not be corroded by the seamless steel rider of protection, the dry-film resist that is not exposed under the ultraviolet light source is uncured, the water flushing, uncured dry-film resist is removed in wiping, dry-film resist with hot blast drying curing, immerse then and carry out the solid film of chemistry in the chromic acid solution, the step of going forward side by side is carried out hot post bake processing, to improve adhesion strength and the corrosion resistance of the dry-film resist that solidifies; The dry-film resist that seamless steel roller faces is uncured is if remove totally, and available point of a knife is repaiied except clean; Disappearance slightly appears in the dry-film resist that seamless steel roller faces is solidified, can repair with printing-ink, spray chemical corrosion liquid to seamless steel roller faces then, the part that the photoresists that the seamless steel rider of chemical corrosion corrosion is not cured cover, form coarse surface, behind the clear water flushing removal photoresists that flow, plate one deck decorative chromium, obtain the seamless steel rider that the surface has decorative pattern, i.e. patterned roll.
As preferably, described mechanical buffing, chemical polishing or the electropolishing of being finished to.
Seamless steel rider is carried out polishing, be in order seamless steel roller faces roughness to be reduced, to have bright even curface, be convenient to the even coating of photoresists, and further make the patterned roll surface projection that obtains have the surface of light.
As preferably, it is water that described photoresists percentage by weight consists of polyvinyl alcohol (PVA) 8%～12%, ammonium dichromate 1%～3%, titanium dioxide 1%～3%, surplus.
Each component of described photoresists is soluble in water, is coated on seamless steel roller faces after mixing, and redundant moisture is removed in oven dry, namely gets the rete of photoresists, and described each component is cheap and easy to get, and the photoresists preparation is easy, and the photoresists water development that makes is easy.
As preferably, described exposure adopts the 500w iodine-tungsten lamp as light source, and the time shutter is 20～60min.
Described exposure needs light source to have suitable spectral characteristic and intensity, and iodine-tungsten lamp can produce suitable UV light and the mixed spectra of royal purple light, and the brightness height, and long service life is fit to do exposure light source.
The time shutter deficiency, photoresists solidify not exclusively, during later use chemical corrosion corrosion, may corrode the not completely crued photoresists of a part, thereby make dim pattern, and the time shutter is long, is the waste to the energy, is not easy to the removal of photoresists simultaneously.
Exposure light source can influence the needed time shutter apart from the position of the photoresists of need exposures, and therefore, exposure light source need recomputate the time shutter after changing apart from the position of the photoresists of need exposure, guarantees the effect of exposure.
As preferably, described being developed in 30～45 ℃ of water carried out, and development time is 30～60s.In 30～45 ℃ of water, can accelerate the dissolving of uncured photoresists, make the corresponding minimizing of development time, raise the efficiency.
As preferably, it is water that described chemical corrosion liquid percentage by weight consists of iron chloride 5%～20%, organic acid 20～40%, complexing agent 1～3%, surplus.
Fe in the described iron chloride3+With the Fe in the seamless steel rider redox reaction takes place, organic acid is used for sour environment is provided, and prevents ferric hydroxide and ferrous hydroxide precipitation, and complexing agent makes the Fe of generation2+Stable, seamless steel rider is caused corrosion, make the patterned roll recess of preparation have coarse surface.
As preferably, described organic acid is formic acid, acetic acid or propionic acid.
The organic acid that sour environment can be provided all can, generally, use formic acid, acetic acid or propionic acid.
As preferably, described complexing agent is at least a in hydroxyl acetate, citrate, tartrate or the ethylenediamine.
Selected complexing agent has stronger adsorbability to seamless steel roller faces, and corrosion is carried out towards the depth direction.
In order to make described patterned roll attractive in appearance, wear-resisting and have good anti-corrosion, after seamless steel rider is produced required pattern, can adopt prior art to plate one deck decorative chromium, preferably, the thickness of described decorative chromium layer is 0.5～1 μ m.
The present invention also provides a kind of release liners patterned roll, adopts described release liners to prepare with the preparation method of patterned roll.
The present invention is after utilizing photoresists to form the floral designs of seamless steel rider, utilize the chemical corrosion corrosion not to be cured seamless steel roller faces that photoresists cover, make seamless steel roller faces have certain roughness, solved when tradition forms floral designs by the mechanical treatment mode and easily floral designs have been produced the limitation of destroying, make the protruding place of the patterned roll for preparing surface-brightening, the recess micro-rough, and then make the leatheret that utilizes this patterned roll to prepare have corresponding visual effect.
Embodiment
Embodiment 1
Utilize polissoir that seamless steel roller faces is carried out polishing, behind the water cleaning, drying, spray one deck photoresists, spray pressure is 0.1MPa, spraying time is 10min, photoresists are made (percentage is mass percent, i.e. the ratio of the quality of every kind of component and photoresists gross mass) by 10% polyvinyl alcohol (PVA) (Japanese Kuraray PVA-117), 1% ammonium dichromate, 3% titanium dioxide and 86% water mixing and stirring; Under 500w iodine-tungsten lamp light source, expose, seamless steel rider and iodine-tungsten lamp light source vertical range are 2.5m, time shutter is 30min, after finishing, exposure in 35 ℃ of water, develops, development time is 50s, in being 5% chromic acid solution, mass percentage concentration floods 60s then, hot post bake 1.5h under 170 ℃, repair the photoresists defective, then chemical corrosion liquid evenly is sprayed at seamless steel roller faces, spray pressure is 0.2MPa, spraying time 40min, and the mass percent of used chemical corrosion liquid consists of iron chloride 20%, formic acid 20%, hydroxy acid sodium 2%, water surplus; After sprinkling is finished, remove the photoresists on the seamless steel roller faces, plate the decorative chromium of one deck 0.5 μ m at last, obtain the seamless steel rider that the surface has decorative pattern, i.e. patterned roll.
Embodiment 2
Utilize polishing fluid that seamless steel rider is polished, contain 200ml phosphoric acid in every liter of polishing fluid, 150ml sulfuric acid, 25g sodium nitrate, 20g sodium chloride, the 20g compound additive is (by the 2g sulfosalicylic acid, 3g 2-butine-1, the 4-glycol, the 3g lauryl sodium sulfate, the 2g thiocarbamide, the 4g urotropine, the 2g disodium ethylene diamine tetraacetate, 4g water is formed), surplus is water, behind the water cleaning, drying, spray one deck photoresists, spray pressure is 0.1MPa, spraying time is 15min, photoresists are by 12% polyvinyl alcohol (PVA) (Japanese Kuraray PVA-117), 3% ammonium dichromate, 1% titanium dioxide and 84% water mixing and stirring are made (percentage is mass percent, i.e. the ratio of the quality of every kind of component and photoresists gross mass); Under 500w iodine-tungsten lamp light source, expose, seamless steel rider and iodine-tungsten lamp light source vertical range are 2.2m, time shutter is 20min, after finishing, exposure in 45 ℃ of water, develops, development time is 30s, in being 8% chromic acid solution, mass percent concentration floods 40s then, hot post bake 2h under 160 ℃, repair the photoresists defective, then chemical corrosion liquid evenly is sprayed at seamless steel roller faces, spray pressure is 0.2MPa, spraying time 60min, and the mass percent of used chemical corrosion liquid consists of iron chloride 10%, acetic acid 25%, sodium citrate 2%, water surplus; After sprinkling is finished, remove the photoresists on the seamless steel roller faces, plate one deck 1 μ m decorative chromium at last, obtain the seamless steel rider that the surface has decorative pattern, i.e. patterned roll.
Embodiment 3
Utilize polishing fluid that seamless steel rider is polished, contain 200ml phosphoric acid in every liter of polishing fluid, 150ml sulfuric acid, 25g sodium nitrate, 20g sodium chloride, the 20g compound additive is (by the 2g sulfosalicylic acid, 3g 2-butine-1, the 4-glycol, the 3g lauryl sodium sulfate, the 2g thiocarbamide, the 4g urotropine, the 2g disodium ethylene diamine tetraacetate, 4g water is formed), water surplus, behind the water cleaning, drying, spray one deck photoresists, spray pressure is 0.1MPa, spraying time is 25min, photoresists are by 8% polyvinyl alcohol (PVA) (Japanese Kuraray PVA-117), 2% ammonium dichromate, 1% titanium dioxide and 89% water mixing and stirring are made (percentage is mass percent, i.e. the ratio of the quality of every kind of component and photoresists gross mass); Under 500w iodine-tungsten lamp light source, expose, seamless steel rider and iodine-tungsten lamp light source vertical range are 2.8m, time shutter is 40min, after finishing, exposure in 40 ℃ of water, develops, development time is 40s, in being 10% chromic acid solution, mass percent concentration floods 30s then, hot post bake 1h under 180 ℃, repair the photoresists defective, then chemical corrosion liquid evenly is sprayed at seamless steel roller faces, spray pressure is 0.2MPa, spraying time 50min, and the mass percent of used chemical corrosion liquid consists of iron chloride 5%, acetic acid 35%, sodium tartrate 2%, water surplus; After sprinkling is finished, remove the photoresists on the seamless steel roller faces, plate one deck 0.7 μ m decorative chromium at last, obtain the seamless steel rider that the surface has decorative pattern, i.e. patterned roll.
Embodiment 4
Utilize polissoir that seamless steel roller faces is carried out polishing, behind the water cleaning, drying, spray one deck photoresists, spray pressure is 0.1MPa, spraying time is 20min, photoresists are made (percentage is mass percent, i.e. the ratio of the quality of every kind of component and photoresists gross mass) by 8% polyvinyl alcohol (PVA) (Kuraray PVA-117), 1% ammonium dichromate, 1% titanium dioxide and 90% water mixing and stirring; Under 500w iodine-tungsten lamp light source, expose, seamless steel rider and iodine-tungsten lamp light source vertical range are 3m, time shutter is 60min, after finishing, exposure in 30 ℃ of water, develops, development time is 60s, in being 10% chromic acid solution, mass percent concentration floods 30s then, hot post bake 0.5h under 190 ℃, repair the photoresists defective, then chemical corrosion liquid evenly is sprayed at seamless steel roller faces, spray pressure is 0.2MPa, spraying time 80min, and the mass percent of used chemical corrosion liquid consists of iron chloride 8%, formic acid 20%, ethylenediamine 1%, water surplus; After sprinkling is finished, remove the photoresists on the seamless steel roller faces, plate one deck 0.8 μ m decorative chromium at last, obtain the seamless steel rider that the surface has decorative pattern, i.e. patterned roll.