CN104878615A - Solvent-free synthetic leather production method using rotation teflon and specially-used production line - Google Patents
Solvent-free synthetic leather production method using rotation teflon and specially-used production line Download PDFInfo
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- CN104878615A CN104878615A CN201510349663.9A CN201510349663A CN104878615A CN 104878615 A CN104878615 A CN 104878615A CN 201510349663 A CN201510349663 A CN 201510349663A CN 104878615 A CN104878615 A CN 104878615A
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Abstract
The invention provides a solvent-free synthetic leather production method using rotation teflon. According to the method, the teflon is used as a circulation type continuous conveying belt. The method includes the following steps that (1) the teflon conveying belt is coated with a synthetic leather raw material, so that a processing layer is obtained; (2) a base material is pressed and compounded onto the processing layer so that a composite layer can be obtained, and first-time heating curing is conducted; (3) the composite layer is stripped and coiled through the rotation of the teflon conveying belt, so that a finished synthetic leather product is obtained; (4) dust on the teflon conveying belt is cleaned in an on-line mode, and the first step is executed again or halting is carried out. The invention further provides a solvent-free synthetic leather specially-used production line using rotation teflon. According to the method, production resources are greatly saved, energy consumption is greatly reduced, environmental pollution is avoided, and the environmental protection effect is achieved; the number of operation steps can be reduced, and the production cost is lowered. The production line is simple and compact in structure and small in occupied space, an existing intermittent production mode can be replaced, and accordingly circulation continuous type synthetic leather production can be realized.
Description
Technical field
The present invention relates to synthetic leather manufacturing technology field, more particularly, relate to a kind of the uninanned platform leather production method and the special production line that adopt revolution Teflon.
Background technology
In a large number with an organic solvent, can also discharge a large amount of organic solvent in conventional synthesis leather production process simultaneously.In recent years, produce synthetic leather technique due to no-solvent polyurethane and there is plurality of advantages: not with an organic solvent thus significantly reduce waste gas and discharge of wastewater, operation shortens, and the advantages such as artificial minimizing and energy consumption reduction, have progressively replaced traditional synthetic leather production method.The feature that no-solvent polyurethane produces synthetic leather technique is: in the synthesis of the polyurethane resin of foaming layer and adhesive layer, allotment, the links used on the machine all without organic solution, also without water.Therefore, production process does not only have organic solvent pollution environment, does not have organic solvent residual to synthetic leather, and even without the need to consuming heat energy volatilization moisture, therefore preparing synthetic leather than aqueous polyurethane has lower energy consumption.
But existing no-solvent polyurethane produces the carrier that synthetic leather technique all needs to use release liners as foaming layer.Release liners in the effect in synthetic leather technique of producing is: it is a kind of papery coiled material with functional die, as the conveyer belt of synthetic leather production line.But release liners has following shortcoming:
1, release liners is limited as consumptive material access times, and cost is high, limited strength, easily damaged.
2, the release liners on coarse groove road relies on the wrinkle of paper substrate to embody lines, often uses a lines progressively to flatten, and is reflected to the lines uniformity that synthetic leather surface affects product.
3, release liners often needs labor cleaning all in addition with one time, repairs and cutting.
4, continuous seepage needs to plug into release liners by High temperature-resistanadhesive adhesive tape, and disconnected paper or connecting port disconnect very large to Influence of production in process of production.
5, every rolling off type paper length is no more than 2000 meters, and service time is generally in 100 minutes; For keeping continuous seepage to need a few volume release liners to use in turn, making production line need paper storage device is installed, cause production line complex structure and improve production cost, and this batch production mode reducing production efficiency greatly.
6, because the active component of no-solvent polyurethane is to the erosion of release liners surface organic silicon coating, require release liners ground floor and surface layer is fine and close, enough thick and without the flaw such as pinprick and volcanic crater, thus add technology difficulty and improve cost.
The shortcoming of above-mentioned release liners greatly constrains existing no-solvent polyurethane and produces the development of synthetic leather technique and have impact on the quality of production and the cost of synthetic leather.And, no-solvent polyurethane is produced in synthetic leather technique in recent years, adopt dry method to carry out producing slowly ripe, synthetic leather normally gives lines and color, so just to the lines dependence reduction of release liners in dry production by post processing after adopting dry-press process.Therefore, a kind of production adopting the uninanned platform leather production method of revolution Teflon and special production line to carry out synthetic leather now can be proposed, the problem causing producing above-mentioned defect to avoid using release liners to produce synthetic leather.
Summary of the invention
The object of the invention is to overcome shortcoming of the prior art with not enough, a kind of uninanned platform leather production method adopting revolution Teflon is provided, this uninanned platform leather production method is simple to operate, namely saves the resources of production and energy consumption in a large number, avoids environmental pollution to reach environment protecting; Operational sequence can be reduced again to reduce production cost.Another object of the present invention is to provide a kind of special production line adopting aforementioned production method, this production line is simple and compact for structure and occupy little space, existing batch production mode can be replaced to produce with the synthetic leather realizing circulation continous mode, thus effectively improve the production efficiency of synthetic leather and reduce production cost.
In order to achieve the above object, the present invention is achieved by following technical proposals: a kind of uninanned platform leather production method adopting revolution Teflon, is characterized in that: using Teflon as circulating continuous conveyor, and comprise the following steps:
(1) on Teflon conveyer belt, apply synthetic leather raw material, obtain machined layer;
(2) base material compacting be compound in machined layer and obtain composite bed, it is heat aging to carry out first time;
(3) composite bed is peeled off by the revolution of Teflon conveyer belt, and rolling, obtains finished product synthetic leather;
(4) online dedusting is cleaned to Teflon conveyer belt, and return step (1) or shut down.
In such scheme, the present invention adopts the uninanned platform leather production method of revolution Teflon simple to operate, it adopts Teflon as circulating continuous conveyor to replace release liners, produce with the synthetic leather realizing circulation continous mode, i.e. a large amount of saving resources of production and energy consumption, avoid environmental pollution to reach environment protecting, operational sequence can be reduced again to reduce production cost.
Described machined layer is foamed material layer; On Teflon conveyer belt, apply synthetic leather raw material described in step (1) to refer to: the flow controlling feeder, make M material and N material with weight ratio (100 ~ 200): (15 ~ 120) are poured on Teflon conveyer belt after feeder mixing chamber is mixed into solvent-free dual-component polyurethane slurry, then carry out coating formation foamed material layer; Described M material is polyester polyol performed polymer component or polyether polyol performed polymer component and filler or auxiliary material, the mixture of auxiliary agent, and N material is Isocyanate prepolymers body;
In step (3), composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.This technical scheme is that solvent-free PU synthetic leather production technology is dried in a painting one, and rolling finished product obtains the solvent-free bass not having surface layer.
Or described machined layer is precoat and foamed material layer; On Teflon conveyer belt, apply synthetic leather raw material described in step (1) to refer to: first on Teflon conveyer belt, apply fabric, dry, obtain precoat; Then control the flow of feeder, make M material and N material with weight ratio (100 ~ 200): (15 ~ 120) apply formation foamed material layer again and are poured on precoat after feeder mixing chamber is mixed into solvent-free dual-component polyurethane slurry; Described fabric is a fluid polyurethane slurry or aqueous polyurethane slurry, and described M material is polyester polyol performed polymer component or polyether polyol performed polymer component and filler or auxiliary material, the mixture of auxiliary agent, and N material is Isocyanate prepolymers body;
In step (3), composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.This technical scheme is that solvent-free PU synthetic leather production technology is dried in two paintings two.
Or, between step (1) and step (2), also comprise and machined layer heated.This technical scheme is respectively a painting two and dries solvent-free PU synthetic leather production technology, and two are coated with the solvent-free PU synthetic leather production technology of three bakings.
Or described machined layer is foamed material layer; On Teflon conveyer belt, apply synthetic leather raw material described in step (1) to refer to: by raw material blade coating on Teflon conveyer belt; Described raw material are a fluid polyurethane slurry, two liquid type polyurethane slurry or aqueous polyurethane adhesive; Between step (1) and step (2), also comprise and machined layer is heated;
In step (3), composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.This technical scheme is that PU synthetic leather production technology is dried in a painting two, and base material can be various cloth and superfine fibre etc.
A kind of uninanned platform leather special production line adopting revolution Teflon, it is characterized in that: comprise circulating continuous conveyor, slewing equipment, and the cleaning dust arrester distributed successively along conveyer belt direction of transfer and loopback direction, for the coating of synthetic leather raw material is obtained on a moving belt machined layer coating unit, be used for base material compacting to be compound to machined layer and obtain the complex machining device of composite bed, baking oven one, stripping off device and wrap-up; Described conveyer belt realizes along the circulating transmission transmitting loopback in the other direction and transmit along direction of transfer by slewing equipment; Described conveyer belt is Teflon conveyer belt.
In such scheme, special production line of the present invention is simple and compact for structure and occupy little space, and existing batch production mode can be replaced to produce with the synthetic leather realizing circulation continous mode, thus effectively improve the production efficiency of synthetic leather and reduce production cost.
Described coating unit is the feeder and coating mechanism that set gradually; Described baking oven one is double-deck baking oven, and the conveyer belt moved along direction of transfer is through the upper strata of baking oven one, and the conveyer belt moved along loopback direction is through the lower floor of baking oven one.
Described coating unit comprise set gradually for applying the painting platform of fabric, feeder and coating mechanism on a moving belt; Also comprise the baking oven two being arranged on and being coated with between platform and feeder; Described baking oven one and baking oven two are double-deck baking oven, and the conveyer belt moved along direction of transfer is through the upper strata of baking oven one and baking oven two, and the conveyer belt moved along loopback direction is through the lower floor of baking oven one and baking oven two.
The present invention also comprises baking oven three; Described coating mechanism is the scraper type coating machine for carrying out scraper film forming to machined layer; Described baking oven three is arranged between scraper type coating machine and complex machining device; Described baking oven three is double-deck baking oven, and the conveyer belt moved along direction of transfer is through the upper strata of baking oven three, and the conveyer belt moved along loopback direction is through the lower floor of baking oven three.
Described coating unit be for by synthetic leather raw material blade coating to the scraper type coating machine on conveyer belt; Also comprise the baking oven four be arranged between scraper type coating machine and coating set composite, described baking oven one and baking oven four are double-deck baking oven, the conveyer belt moved along direction of transfer is through the upper strata of baking oven one and baking oven four, and the conveyer belt moved along loopback direction is through the lower floor of baking oven one and baking oven four.
The present invention is to use no-solvent polyurethane slurry and revolution Teflon as continuous mould for central characteristics, in kind and the form of base material, product purpose, the first-class various aspects of method using solvent-free slurry have many changes, to adapt to various application scenarios: production method of the present invention and special production line can be the common oiliness synthetic leather of base material with coiled material in order to production, the synthetic leather of aqueous covercoat, microfiber synthetic leather, and take sheet material as the cow split transfer-film leather of base material, regenerated leather, skin chaff paper etc.; Also can hand over subsequent handling as the semi-finished product of the said goods, carry out embossing, stamp, rub line etc.; Can produce the solvent-free bass not having surface layer, also can do on non-solvent foamed layer or not do one deck precoat, this precoat can be common oiliness PU, also can be water-based PU.
Wherein, use in the method for solvent-free slurry, can coordinate with feeder and be coated with platform scraper, also can coordinate special coating set composite by feeder, as conventional dry technique, even can not use feeder and direct blade coating.
The present invention replaces the revolution continuous mould of release liners, and Teflon conveyer belt is a kind of glass-fiber transfering belt, and top finishing is with Teflon coating, and Teflon conveyer belt tandem array in the form of a ring, is the mould that a kind of continuous circulation uses.Wherein glass layer provides pliability, constancy, makes Teflon conveyer belt have TENSILE STRENGTH far above release liners and tearing strength.Teflon coating surface is smooth in minute surface (development along with industry can use surface to have the Teflon band of leather texture), no-solvent polyurethane slurry has certain tack on its surface, and no-solvent polyurethane slurry has less and suitable peeling force after the sizing of production line curing oven at different levels.The double-deck baking oven of baking oven of the present invention, upper and lower two-layer suitable heat insulation independent temperature, every 6 meters or 9 meters of horizontal direction is divided into independent warm area.
And the present invention also has the following advantages:
1, Teflon is as circulating conveyer belt, and it is durable that it is tough, and access times are far above release liners, and cost reduces.
2, subsequent handling cold rolling or vacuum pattern absorbing provide product lines, and controllability is strong.
3, store without the need to testing release liners operation and release liners, lifting and winding process etc., required production line manually roughly reduces by half.
4, without the need to release liners of plugging into, to plug into band without the need to high temperature, disconnected paper affects continuous production.
5, Batch Process is made to become continuous seepage.
6, can without the need to surface layer, surface layer, without the need to anti-erosion, reduces costs further.
7, without the need to paper storage device, without the need to both arms winder and double paper loading rack, baking oven is two-layer up and down, and whole production line length is significantly shortened.
Compared with prior art, tool of the present invention has the following advantages and beneficial effect:
1, the present invention adopts the uninanned platform leather production method of revolution Teflon simple to operate, namely saves the resources of production and energy consumption in a large number, avoids environmental pollution to reach environment protecting; Operational sequence can be reduced again to reduce production cost.
2, the present invention adopts the uninanned platform leather special production line of revolution Teflon simple and compact for structure and occupy little space, existing batch production mode can be replaced to produce with the synthetic leather realizing circulation continous mode, thus effectively improve the production efficiency of synthetic leather and reduce production cost.
Accompanying drawing explanation
Fig. 1 is the flow chart of uninanned platform leather production method in embodiment one;
Fig. 2 is the flow chart of uninanned platform leather production method in embodiment two;
Fig. 3 is the flow chart of uninanned platform leather production method in embodiment three;
Fig. 4 is the flow chart of uninanned platform leather production method in embodiment four;
Fig. 5 is the flow chart of uninanned platform leather production method in embodiment five;
Wherein, 1 be wrap-up, 2 for cleaning dust arrester, 3 be conveyer belt, 4 for be coated with platform, 5 for baking oven two, 6 be feeder, 7 be scraper type coating machine, 8 for baking oven three, 9 for baking oven four, 10 be unwinding device, 11 for baking oven one, 12 be slewing equipment, 13 be stripping off device, 14 for coating composite integrated device, 15 be composite double-roll.
The each flow chart of the present invention omits various devices that common dry-process production line or other general industry produce equipment as guide roller, dynamical system, deviation correcting device, attemperating unit, circulated air, air intake air draft and workbench etc. device, these devices be normal produce necessary.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
Embodiment one
As shown in Figure 1, the present invention adopts the uninanned platform leather special production line of revolution Teflon, comprise circulating Teflon continuous conveyor 3, slewing equipment 12, and the cleaning dust arrester 2 distributed successively along conveyer belt 3 direction of transfer and loopback direction, for synthetic leather raw material are coated in conveyer belt 3 obtains machined layer coating unit, be used for base material compacting to be compound to machined layer and obtain the complex machining device of composite bed, baking oven 1, stripping off device 13 and wrap-up 1; Wherein, conveyer belt 3 is realized along the circulating transmission transmitting loopback in the other direction and transmit along direction of transfer by slewing equipment 12.
Coating unit of the present invention is the feeder 6 and coating mechanism that set gradually, complex machining device is unwinding device 10 and composite structure, in the present embodiment, coating mechanism and composite structure are coating composite integrated device 14 (this coating composite integrated device 14 is: 201210392685.X, and name is called: a kind of belt foaming and molding machine producing synthetic leather discloses) in the patent No..Baking oven 1 is double-deck baking oven, and the conveyer belt 3 moved along direction of transfer is through the upper strata of baking oven 1, and the conveyer belt 3 moved along loopback direction is through the lower floor of baking oven 1.The cleaning dust arrester 2 of this production line is air-flow and hair roller cleaning dust arrester, and what can replace traditional handicraft tests paper operation.
Adopt the uninanned platform leather production method of revolution Teflon in the present embodiment, be using Teflon as circulating continuous conveyor, and comprise the following steps:
(1) on Teflon conveyer belt, apply synthetic leather raw material, obtain machined layer;
(2) base material compacting be compound in machined layer and obtain composite bed, it is heat aging to carry out first time;
(3) composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.
(4) online dedusting is cleaned to Teflon conveyer belt, and return step (1) or shut down.
Wherein, above-mentioned machined layer is foamed material layer, and on Teflon conveyer belt 3, apply synthetic leather raw material in step (1) refer to: the flow controlling feeder, M material and N material are poured on Teflon conveyer belt with weight ratio 200:100 after feeder mixing chamber is mixed into solvent-free dual-component polyurethane slurry, then carry out coating formation foamed material layer.Wherein, M material is polyester polyol performed polymer component or polyether polyol performed polymer component and filler or auxiliary material, the mixture of auxiliary agent, N material is Isocyanate prepolymers body (feeder 6 material is open in patent 201110254065.5, but is not limited to material disclosed in this patent).This technical scheme is that solvent-free PU synthetic leather production technology is dried in a painting one, and rolling finished product obtains the solvent-free bass not having surface layer.
Embodiment two
As shown in Figure 2, the present invention adopts the uninanned platform leather special production line of revolution Teflon, comprise circulating Teflon continuous conveyor 3, slewing equipment 12, and the cleaning dust arrester 2 distributed successively along conveyer belt 3 direction of transfer and loopback direction, for synthetic leather raw material are coated in conveyer belt 3 obtains machined layer coating unit, be used for base material compacting to be compound to machined layer and obtain the complex machining device of composite bed, baking oven 1, stripping off device 13 and wrap-up 1; Wherein, conveyer belt 3 is realized along the circulating transmission transmitting loopback in the other direction and transmit along direction of transfer by slewing equipment 12.
Complex machining device of the present invention is unwinding device 10 and composite structure; Coating unit comprise set gradually for applying the painting platform 4 of fabric, feeder 6 and coating mechanism on conveyer belt 3, this production line also comprises the baking oven 25 being arranged on and being coated with between platform 4 and feeder 6.Wherein, baking oven 1 and baking oven 25 are double-deck baking oven, and the conveyer belt 3 moved along direction of transfer is through the upper strata of baking oven 1 and baking oven 25, and the conveyer belt 3 moved along loopback direction is through the lower floor of baking oven 1 and baking oven 25.In the present embodiment, coating mechanism and composite structure are coating composite integrated device 14 (this coating composite integrated device 14 is: 201210392685.X, and name is called: a kind of belt foaming and molding machine producing synthetic leather discloses) in the patent No..
Adopt the uninanned platform leather production method of revolution Teflon in the present embodiment, be using Teflon as circulating conveyer belt, and comprise the following steps:
(1) on Teflon conveyer belt, apply synthetic leather raw material, obtain machined layer;
(2) base material compacting be compound in machined layer and obtain composite bed, it is heat aging to carry out first time;
(3) composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.
(4) online dedusting is cleaned to Teflon conveyer belt, and return step (1) or shut down.
Wherein, above-mentioned machined layer is precoat and foamed material layer; On Teflon conveyer belt 3, apply synthetic leather raw material in step (1) refer to: first on Teflon conveyer belt 3, apply fabric, dry, obtain precoat; Then control the flow of feeder 6, make M material and N material after feeder 6 mixing chamber is mixed into solvent-free dual-component polyurethane slurry, apply formation foamed material layer again with weight ratio 100:120 and be poured on precoat.Wherein, fabric is a fluid polyurethane slurry or aqueous polyurethane slurry, M material is polyester polyol performed polymer component or polyether polyol performed polymer component and filler or auxiliary material, the mixture of auxiliary agent, N material is Isocyanate prepolymers body (feeder 6 material is open in patent 201110254065.5, but is not limited to material disclosed in this patent).This technical scheme is that solvent-free PU synthetic leather production technology is dried in two paintings two.
Embodiment three
As shown in Figure 3, the present invention adopts the uninanned platform leather special production line of revolution Teflon, comprise circulating Teflon continuous conveyor 3, slewing equipment 12, and the cleaning dust arrester 2 distributed successively along conveyer belt 3 direction of transfer and loopback direction, for synthetic leather raw material are coated in conveyer belt 3 obtains machined layer coating unit, be used for base material compacting to be compound to machined layer and obtain the complex machining device of composite bed, baking oven 1, stripping off device 13 and wrap-up 1; Wherein, conveyer belt 3 is realized along the circulating transmission transmitting loopback in the other direction and transmit along direction of transfer by slewing equipment 12.
Coating unit of the present invention is the feeder 6 and coating mechanism that set gradually, and complex machining device is unwinding device 10 and composite structure.This production line also comprises baking oven 38, and wherein, composite structure is composite double-roll 15, and coating mechanism is the scraper type coating machine 7 for carrying out scraper film forming to machined layer, and baking oven 38 is arranged between scraper type coating machine 7 and composite double-roll 15.Baking oven 1 of the present invention and baking oven 38 are double-deck baking oven, and the conveyer belt 3 moved along direction of transfer is through the upper strata of baking oven 1 and baking oven 38, and the conveyer belt 3 moved along loopback direction is through the lower floor of baking oven 1 and baking oven 38.The cleaning dust arrester 2 of this production line is air-flow and hair roller cleaning dust arrester, and what can replace traditional handicraft tests paper operation.
Adopt the uninanned platform leather production method of revolution Teflon in the present embodiment, be using Teflon as circulating conveyer belt, and comprise the following steps:
(1) on Teflon conveyer belt, apply synthetic leather raw material, obtain machined layer;
(2) base material compacting be compound in machined layer and obtain composite bed, it is heat aging to carry out first time;
(3) composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.
(4) online dedusting is cleaned to Teflon conveyer belt, and return step (1) or shut down.
Between step (1) and step (2), also comprise and machined layer is heated.
Wherein, above-mentioned machined layer is foamed material layer, and on Teflon conveyer belt 3, apply synthetic leather raw material in step (1) refer to: the flow controlling feeder, M material and N material are poured on Teflon conveyer belt with weight ratio 160:28 after feeder mixing chamber is mixed into solvent-free dual-component polyurethane slurry, then carry out coating formation foamed material layer.Wherein, described M material is polyester polyol performed polymer component or polyether polyol performed polymer component and filler or auxiliary material, the mixture of auxiliary agent, N material is Isocyanate prepolymers body (feeder 6 material is open in patent 201110254065.5, but is not limited to material disclosed in this patent).Technical scheme is respectively a painting two and dries solvent-free PU synthetic leather production technology.
Polyurethane slurry in the present embodiment is the solvent-free dual-component polyurethane slurry of Fei Ling leather chemical corporation, Ltd. SF-93 series polyether type, and the inspiration time of dual-component polyurethane slurry adjustment compound is 60 seconds to 70 seconds, is poured into feeder 6 after mixing.
In the present embodiment, Teflon conveyer belt 3 speed of travel is set to 12 ms/min to 18 ms/min.The coating clearance of scraper type coating machine 7 is set to 200 microns to 500 microns (depending on product needed).Baking oven 38 length is 18 meters, levels independence warm area, the independent warm area in left and right, and each warm area length is 9 meters, and wherein, upper strata temperature is set to 90 DEG C.Lower floor's temperature is set to right section 90 DEG C, left section 30 DEG C (not heating).Baking oven 1 length 36 meters, levels independence warm area, the independent warm area in left and right, each warm area length is 9 meters, and wherein, the front 18 meters of temperature in upper strata are set to 125 DEG C, and behind upper strata, 18 meters and lower floor are set to 90 DEG C.
After composite bed is peeled off, the subsequent handlings such as stamp can be entered, for applicable production case and bag and sofa etc.
Embodiment four
As shown in Figure 4, the present invention adopts the uninanned platform leather special production line of revolution Teflon, comprise circulating Teflon continuous conveyor 3, slewing equipment 12, and the cleaning dust arrester 2 distributed successively along conveyer belt 3 direction of transfer and loopback direction, for synthetic leather raw material are coated in conveyer belt 3 obtains machined layer coating unit, be used for base material compacting to be compound to machined layer and obtain the complex machining device of composite bed, baking oven 1, stripping off device 13 and wrap-up 1; Wherein, conveyer belt 3 is realized along the circulating transmission transmitting loopback in the other direction and transmit along direction of transfer by slewing equipment 12.
Complex machining device of the present invention is unwinding device 10 and composite structure; Coating unit comprise set gradually for applying the painting platform 4 of fabric, feeder 6 and coating mechanism on conveyer belt 3, this production line also comprises the baking oven 25 being arranged on and being coated with between platform 4 and feeder 6, also comprises baking oven 38.Wherein, composite structure is composite double-roll 15, and coating mechanism is the scraper type coating machine 7 for carrying out scraper film forming to machined layer, and baking oven 38 is arranged between scraper type coating machine 7 and composite double-roll 15.Baking oven 1, baking oven 25 and baking oven 38 is double-deck baking oven, and the conveyer belt 3 moved along direction of transfer is through the upper strata of baking oven 1, baking oven 25 and baking oven 38, and the conveyer belt 3 moved along loopback direction is through the lower floor of baking oven 1, baking oven 25 and baking oven 38.
Adopt the uninanned platform leather production method of revolution Teflon in the present embodiment, be using Teflon as circulating continuous conveyor, and comprise the following steps:
(1) on Teflon conveyer belt, apply synthetic leather raw material, obtain machined layer;
(2) base material compacting be compound in machined layer and obtain composite bed, it is heat aging to carry out first time;
(3) composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.
(4) online dedusting is cleaned to Teflon conveyer belt, and return step (1) or shut down.
Between step (1) and step (2), also comprise and machined layer is heated.
Wherein, above-mentioned machined layer is precoat and foamed material layer; On Teflon conveyer belt 3, apply synthetic leather raw material in step (1) refer to: first on Teflon conveyer belt 3, apply fabric, dry, obtain precoat; Then control the flow of feeder 6, make M material and N material after feeder 6 mixing chamber is mixed into solvent-free dual-component polyurethane slurry, apply formation foamed material layer again with weight ratio 100:15 and be poured on precoat.Wherein, fabric is a fluid polyurethane slurry or aqueous polyurethane slurry, described M material is polyester polyol performed polymer component or polyether polyol performed polymer component and filler or auxiliary material, the mixture of auxiliary agent, N material is Isocyanate prepolymers body (feeder 6 material is open in patent 201110254065.5, but is not limited to material disclosed in this patent).This technical scheme is that solvent-free PU synthetic leather production technology is dried in two paintings three.
Embodiment five
As shown in Figure 5, the present invention adopts the uninanned platform leather special production line of revolution Teflon, comprise circulating Teflon continuous conveyor 3, slewing equipment 12, and the cleaning dust arrester 2 distributed successively along conveyer belt 3 direction of transfer and loopback direction, for synthetic leather raw material are coated in conveyer belt 3 obtains machined layer coating unit, be used for base material compacting to be compound to machined layer and obtain the complex machining device of composite bed, baking oven 1, stripping off device 13 and wrap-up 1; Wherein, conveyer belt 3 is realized along the circulating transmission transmitting loopback in the other direction and transmit along direction of transfer by slewing equipment 12.
Complex machining device of the present invention is unwinding device 10 and the composite structure of putting base material, and wherein, composite structure is composite double-roll 15 or board-like press.Coating unit be for by synthetic leather raw material blade coating to the scraper type coating machine 7 on conveyer belt, this production line also comprises the baking oven 49 be arranged between scraper type coating machine 7 and complex machining device, described baking oven 1 and baking oven 49 are double-deck baking oven, the conveyer belt 3 moved along direction of transfer is through the upper strata of baking oven 1 and baking oven 49, and the conveyer belt 3 moved along loopback direction is through the lower floor of baking oven 1 and baking oven 49.The cleaning dust arrester 2 of this production line is air-flow and hair roller cleaning dust arrester, and what can replace traditional handicraft tests paper operation.
Adopt the uninanned platform leather production method of revolution Teflon in the present embodiment, be using Teflon as circulating continuous conveyor, and comprise the following steps:
(1) on Teflon conveyer belt, apply synthetic leather raw material, obtain machined layer;
(2) base material compacting be compound in machined layer and obtain composite bed, it is heat aging to carry out first time;
(3) composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.
(4) online dedusting is cleaned to Teflon conveyer belt, and return step (1) or shut down.
Wherein, above-mentioned machined layer is foamed material layer, on Teflon conveyer belt 3, apply synthetic leather raw material in step (1) refer to: by raw material blade coating on Teflon conveyer belt 3, these raw material are a fluid polyurethane slurry, two liquid type polyurethane slurry or aqueous polyurethane adhesive; Between step (1) and step (2), also comprise and machined layer is heated.This technical scheme is that PU synthetic leather production technology is dried in a painting two, and base material can be various cloth and superfine fibre etc.
Polyurethane slurry in the present embodiment is the dual-component polyurethane slurry of Fei Ling leather chemical corporation, Ltd. SF-76 series polyester type of solvent-free, and the up time of dual-component polyurethane slurry adjustment compound is 12 minutes to 24 minutes.Its implication is: count from batching is complete, compound still can be used more than 12 minutes, raises unavailable more than 24 minutes viscosity.
In the present embodiment, Teflon conveyer belt 3 speed of travel is set to 6 ms/min to 9 ms/min.The coating clearance of scraper type coating machine 7 is set to 200 microns to 300 microns (depending on product needed).Baking oven 49 length is 12 meters, levels independence warm area, the independent warm area in left and right, and each warm area length is 6 meters, and wherein, upper strata temperature is set to 110 DEG C.Lower floor's temperature is set to right section 80 DEG C, left section 30 DEG C (not heating).Baking oven 1 length 30 meters, levels independence warm area, the independent warm area in left and right, each warm area length is 6 meters, and wherein, each warm area temperature of levels is set to 80 DEG C.
After composite bed is peeled off, keep flat if desired or cool extension, avoid laminating too early causing distortion; The subsequent handlings such as stamp spray light can be entered afterwards, for applicable production case and bag and footwear etc.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. adopt a uninanned platform leather production method for revolution Teflon, it is characterized in that: using Teflon as circulating continuous conveyor, and comprise the following steps:
(1) on Teflon conveyer belt, apply synthetic leather raw material, obtain machined layer;
(2) base material compacting be compound in machined layer and obtain composite bed, it is heat aging to carry out first time;
(3) composite bed is peeled off by the revolution of Teflon conveyer belt, and rolling, obtains finished product synthetic leather;
(4) online dedusting is cleaned to Teflon conveyer belt, and return step (1) or shut down.
2. the uninanned platform leather production method adopting revolution Teflon according to claim 1, is characterized in that: described machined layer is foamed material layer; On Teflon conveyer belt, apply synthetic leather raw material described in step (1) to refer to: the flow controlling feeder, make M material and N material with weight ratio (100 ~ 200): (15 ~ 120) are poured on Teflon conveyer belt after feeder mixing chamber is mixed into solvent-free dual-component polyurethane slurry, then carry out coating formation foamed material layer; Described M material is polyester polyol performed polymer component or polyether polyol performed polymer component and filler or auxiliary material, the mixture of auxiliary agent, and N material is Isocyanate prepolymers body;
In step (3), composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.
3. the uninanned platform leather production method adopting revolution Teflon according to claim 1, is characterized in that: described machined layer is precoat and foamed material layer; On Teflon conveyer belt, apply synthetic leather raw material described in step (1) to refer to: first on Teflon conveyer belt, apply fabric, dry, obtain precoat; Then control the flow of feeder, make M material and N material with weight ratio (100 ~ 200): (15 ~ 120) apply formation foamed material layer again and are poured on precoat after feeder mixing chamber is mixed into solvent-free dual-component polyurethane slurry; Described fabric is a fluid polyurethane slurry or aqueous polyurethane slurry, and described M material is polyester polyol performed polymer component or polyether polyol performed polymer component and filler or auxiliary material, the mixture of auxiliary agent, and N material is Isocyanate prepolymers body;
In step (3), composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.
4. the uninanned platform leather production method of the employing revolution Teflon according to Claims 2 or 3, is characterized in that: between step (1) and step (2), also comprise and heating to machined layer.
5. the uninanned platform leather production method adopting revolution Teflon according to claim 1, is characterized in that: described machined layer is foamed material layer; On Teflon conveyer belt, apply synthetic leather raw material described in step (1) to refer to: by raw material blade coating on Teflon conveyer belt; Described raw material are a fluid polyurethane slurry, two liquid type polyurethane slurry or aqueous polyurethane adhesive; Between step (1) and step (2), also comprise and machined layer is heated;
In step (3), composite bed is heat aging by carrying out second time after the revolution of Teflon conveyer belt, then peels off, rolling, obtains finished product synthetic leather.
6. one kind adopts the uninanned platform leather special production line of revolution Teflon, it is characterized in that: comprise circulating continuous conveyor, slewing equipment, and the cleaning dust arrester distributed successively along conveyer belt direction of transfer and loopback direction, for the coating of synthetic leather raw material is obtained on a moving belt machined layer coating unit, be used for base material compacting to be compound to machined layer and obtain the complex machining device of composite bed, baking oven one, stripping off device and wrap-up; Described conveyer belt realizes along the circulating transmission transmitting loopback in the other direction and transmit along direction of transfer by slewing equipment; Described conveyer belt is Teflon conveyer belt.
7. the uninanned platform leather special production line adopting revolution Teflon according to claim 6, is characterized in that: described coating unit is the feeder and coating mechanism that set gradually; Described baking oven one is double-deck baking oven, and the conveyer belt moved along direction of transfer is through the upper strata of baking oven one, and the conveyer belt moved along loopback direction is through the lower floor of baking oven one.
8. the uninanned platform leather special production line adopting revolution Teflon according to claim 6, is characterized in that: described coating unit comprise set gradually for applying the painting platform of fabric, feeder and coating mechanism on a moving belt; Also comprise the baking oven two being arranged on and being coated with between platform and feeder; Described baking oven one and baking oven two are double-deck baking oven, and the conveyer belt moved along direction of transfer is through the upper strata of baking oven one and baking oven two, and the conveyer belt moved along loopback direction is through the lower floor of baking oven one and baking oven two.
9. the uninanned platform leather special production line of the employing revolution Teflon according to claim 7 or 8, is characterized in that: also comprise baking oven three; Described coating mechanism is the scraper type coating machine for carrying out scraper film forming to machined layer; Described baking oven three is arranged between scraper type coating machine and complex machining device; Described baking oven three is double-deck baking oven, and the conveyer belt moved along direction of transfer is through the upper strata of baking oven three, and the conveyer belt moved along loopback direction is through the lower floor of baking oven three.
10. according to claim 6 adopt revolution Teflon uninanned platform leather special production line, it is characterized in that: described coating unit be for by synthetic leather raw material blade coating to the scraper type coating machine on conveyer belt; Also comprise the baking oven four be arranged between scraper type coating machine and coating set composite, described baking oven one and baking oven four are double-deck baking oven, the conveyer belt moved along direction of transfer is through the upper strata of baking oven one and baking oven four, and the conveyer belt moved along loopback direction is through the lower floor of baking oven one and baking oven four.
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| CN107254783A (en) * | 2017-08-16 | 2017-10-17 | 浙江新旭合成革有限公司 | Improve the method and system of processing of synthetic leather peel strength |
| CN107336507A (en) * | 2017-08-25 | 2017-11-10 | 东莞市安派电子有限公司 | The coating complex machine and its combination process of a kind of film |
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Application publication date: 20150902 |