CN106863833A - A kind of method for producing TPU film - Google Patents
A kind of method for producing TPU film Download PDFInfo
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- CN106863833A CN106863833A CN201710153352.4A CN201710153352A CN106863833A CN 106863833 A CN106863833 A CN 106863833A CN 201710153352 A CN201710153352 A CN 201710153352A CN 106863833 A CN106863833 A CN 106863833A
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- pair
- pinch roller
- tpu film
- roller
- pressure
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of method for producing TPU film, TPU raw materials are carried out into curtain coating and repeatedly to obtaining TPU film after pressure.Described pair be pressed in after the curtain coating or to press with it is described curtain coating synchronously carry out.The TPU film flattening degree produced using the method for the invention is high, and without current mark, performance is respectively good to uniformity, and thickness is uniform, and thickness range is wide, can as needed prepare the TPU film that thickness is 0.01~5mm.
Description
Technical field
The present invention relates to processing of high molecular material technical field, and in particular to a kind of method for producing TPU film.
Background technology
At present, thermoplastic polyurethane (TPU) nowhere loses in life, from footwear material, ready-made clothes, inflatable toys, umbrella, skin
To waterborne and sports equipment, medical equipment, body-building apparatus, automobile seat material under water etc., TPU film is in TPU for case, suitcase
On the basis of particulate material, through the film that the special process such as calendering, curtain coating, blown film, coating is made.The current business on sole and vamp
The applications such as mark decoration, air bag, air cushion, oil bag are extremely wide.Now, TPU film can be applied to top-grade building overlay film, automobile and fire
Pad pasting, footwear material of car vehicle window etc..Wherein, compared to ox-hide that is expensive and wearing no resistance, TPU film shows cost and property
Can double dominant, and Halogen TPU film can send out the problem of pernicious gas when can avoid PVC film as interior trim film, from
And show the advantage in terms of environmental protection.20%, the TPU that China's TPU film consumption figure in 2015 accounts for TPU product aggregate consumptions is thin
About 40,000 yuan/ton of film average selling price.According to the 230000 tons of calculating of China TPU product consumptions amount in 2013, TPU film consumption figure
About 4.6 ten thousand tons, about 18.4 hundred million yuan of market comsupton volume., it is expected that 2013~2017 years TPU market scale average annual growths are
11.2%, reach 28.1 hundred million yuan within 2017.It is good that TPU possesses hardness range (60HA~85HD) wide, wear-resisting, oil resistant, transparent, elasticity
It is a relatively more special major class in elastomer etc. characteristic, performance range is very wide, so TPU is the class between rubber and plastics
Macromolecular material, can heating plasticizing, in chemical constitution without or seldom crosslinking, its molecule is substantially linear, but is but existed
Certain physical crosslinking.
The preparation method of usual TPU film has the techniques such as blowing, curtain coating, calendering, but thin using TPU prepared by blow molding process
Film thickness scope is more compared with small, fisheye, the tear-resistant poor performance of TPU film prepared using casting technique, two kinds of products of technique productions
Product are not well positioned to meet automobile cushion use requirement.During calendering technology is current plastic sheeting technique, speed of production is most fast,
Automation and the production technology of change variety, the film prepared using the technique have thickness uniform, embossed channels are clear,
The advantages of film tear resistance is good.
CN103289360A discloses a kind of calendering type thermoplastic polyurethane and preparation method thereof, the invention provides one kind
Solve the problems, such as to stick roller in thermoplastic polyurethane calender line.The method is to add additive by TPU resins, by adding
Plus the precipitation of agent forms separation layer, TPU is set not stick roller, but TPU membrane prepared by this method is not thin enough, it is impossible to meet accurate device pair
The requirement of film thickness, and the open and flat degree of TPU membrane and uniformity have no improvement.
The content of the invention
In view of problems of the prior art, an object of the present invention is to provide a kind of side for producing TPU film
Method, including：TPU raw materials are cast and through 3~5 times to obtaining TPU film after pressure.For example, to pressure number of times be 3 times, 4 times or
5 times.
TPU raw materials of the present invention are not limited only to TPU, can also include other components, for example, it may be it is thin to assign TPU
The functional form additive of film other characteristics.
By curtain coating and 3~5 times to pressure, the TPU film flattening degree of the method for the invention production is high, and performance is respectively to uniform
Property it is good, without trace, thickness is uniform, and thickness range is wide, can as needed prepare the TPU film that thickness is 0.01~5mm.
Used as the preferred technical solution of the present invention, described pair of pressure number of times is 3 or 4 times.When being 3 or 4 times to pressing number of times, obtain
The open and flat degree highest of TPU film for arriving.
The method of production TPU film of the present invention, described pair is pressed in after the curtain coating or described pair of pressure and institute
Stating curtain coating is synchronously carried out.
Specifically, according to product requirement, with reference to the thermoplasticity of TPU raw materials, selection is to being pressed in after the curtain coating or institute
State synchronous with the curtain coating to pressing.When the melting charge temperature of extrusion is higher than 150 DEG C, target product is TPU of the thickness more than 1.5mm
During film, to being pressed in after curtain coating, when the melting charge temperature of extrusion is less than 150 DEG C, target product is thickness less than 1.5mm for selection
It is synchronous with curtain coating to pressing during TPU membrane.
Of the present invention to pressing by opposite-grinding device realization, the opposite-grinding device includes disk roller, and the disk roller includes main wheel
With to pinch roller, the axle of disk roller is parallel to each other described in any two.
Disk roller of the present invention is middle wheel high or cylindric wheel；The middle wheel high refers to mid diameter bigger than two ends diameter
0.01mm~20mm, such as 0.01mm, 0.05mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm,
12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm etc..
Preferably, the material of the disk roller is selected from steel, alloy steel products, natural gum, NBR, the glue of second third, polyurethane, silicon
Any one in rubber, fluorubber and carbon fiber.
The disk roller of unlike material has different hardness, toughness, as needed by the surface treatment of disk roller into minute surface, mist
Face, embossing, dermatoglyph, reticulate pattern and other effects, can obtain the TPU film of different pattern, meet market to the diversification of TPU film,
Individual demand.
The axle of any three disk rollers is at grade or in Different Plane in the present invention.
Three disk rollers of arbitrary neighborhood are not limited in space arrangement angle, can also may be used in level, the arrangement of vertical or certain angle
By the permutation and combination of different angles.
Preferably, the wheelspan between disk roller described in adjacent two be 0.005~10mm, such as 0.005mm, 0.007mm,
0.009mm、0.01mm、0.02mm、0.05mm、1mm、2mm、2.4mm、3.2mm、3.8mm、4.1mm、4.6mm、4.9mm、5mm、
6mm, 7mm, 8mm, 9mm or 10mm etc., preferably 0.01~5mm.0.005~the 10mm of wheelspan set between disk roller can obtain thickness
Spend the TPU membrane for 0.005~10mm.
It is of the present invention to pressure during, disk roller described in adjacent two is rotated in opposite directions.
It is of the present invention to pressure during, the temperature of the disk roller is 0 DEG C~180 DEG C.The present invention is between adjacent disk roller
Do not limited with the presence or absence of temperature difference, the value to temperature difference between adjacent disk roller is not also limited, temperature difference between adjacent disk roller
Requirement according to product to hardness and thickness is determined.
Preferably, the temperature of the disk roller is adjusted by temperature regulating device.
Preferably, the temperature regulating device includes oil heater, heat-conducting oil furnace, hot oil furnace, heat conducting oil boiler, ability of swimming mould temperature
Machine, oil type die heater, high temperature die heater, disk roller temperature controlling machine, roller temperature controlling machine, roller temperature controlling machine, disk roller temperature controlling machine, roller heating
In machine any one or at least two combination, wherein, it is typical but non-limiting be combined as oil heater and heat-conducting oil furnace,
Hot oil furnace and heat conducting oil boiler, water type die heater and oil type die heater, high temperature die heater and disk roller temperature controlling machine, roller temperature controlling machine and
Roller temperature controlling machine, disk roller temperature controlling machine and roller heating machine.
Curtain coating of the present invention includes：The extruded machine extrusion of TPU raw materials, is cast on the main wheel and/or main wheel
With between pinch roller.
The melting charge that the present invention does not limit extruder extrusion is cast the position on disk roller, can be in main wheel center, Ke Yi
Main wheel side, can main wheel side with center in the middle of certain position, it is also possible to main wheel with to pinch roller in the middle of.By regulation
The relative altitude that the discharging opening and melting charge of extruder are cast between the target location on disk roller can further adjust melting charge
The temperature and mobility during main wheel are reached, and then adjusts the temperature and mobility started to the moment melting charge pressed, influence is final
The hardness and flattening degree of TPU film.
It is of the present invention to after pressure also include cooling.
Preferably, the cooling includes：By pinch roller is taken on cooling shaping wheel to the TPU film after to pressure carry out it is cold
But.
As currently preferred technical scheme, extruder the raw materials melt stream containing TPU is prolonged on main wheel or
Main wheel and between pinch roller, it is 0 DEG C~180 DEG C, adjacent two disk rollers phase to control main wheel and temperature to pinch roller by temperature regulating device
To rotation, 3~5 times are carried out to melting charge to pressure, the film after pressure is taken to pinch roller on briquetting roller after film forming through cooling down
To TPU film.
Compared with prior art, the present invention at least has the advantages that：
By curtain coating and repeatedly to pressure, the TPU film flattening degree of the method for the invention production is high, and without trace, performance is each
Good to uniformity, thickness is uniform, and thickness range is wide, can as needed prepare the TPU film that thickness is 0.01-5mm.
Brief description of the drawings
Fig. 1 is the disk roller of the embodiment of the present invention 1 arrangement schematic diagram；
Fig. 2 is the disk roller of the embodiment of the present invention 2 arrangement schematic diagram；
Fig. 3 is the disk roller of the embodiment of the present invention 3 arrangement schematic diagram；
Fig. 4 is the disk roller of the embodiment of the present invention 4 arrangement schematic diagram；
Fig. 5 is comparative example 3-1 disk rollers arrangement schematic diagram of the present invention；
Fig. 6 is comparative example 3-2 disk rollers arrangement schematic diagram of the present invention.
Description of reference numerals
11、21、31、41、51、61：The discharging opening of extruder
12、22、32、42、52、62：Main wheel
13、23、33、43、53、63：First pair of pinch roller
14、24、34、44、54、64：Second pair of pinch roller
15、25、35、45、55、65：3rd pair of pinch roller
36、46、56、66：4th pair of pinch roller
37、57、67：5th pair of pinch roller
58、68：6th pair of pinch roller
69：7th pair of pinch roller
60：8th pair of pinch roller
The present invention is described in more detail below.But following examples are only simple example of the invention, are not represented
Or the scope of the present invention is limited, protection scope of the present invention is defined by claims.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
For the present invention is better described, technical scheme is readily appreciated, it is as follows that the present invention enumerates embodiment.Ability
Field technique personnel it will be clearly understood that the embodiment be only to aid in understand the present invention, be not construed as to concrete restriction of the invention.
The test of thickness deviation
1st, according to GB/T 6672-2001《Plastic sheeting and the mechanical mensuration of the measure of sheet thickness》Specified in method
Carry out.The calibrator precision of use is not less than 1 μm, and the thickness measuring number of plies is sampled by table 1.By every actual measurement thickness divided by layer
Number, the as film thickness of correspondence position.The thickness arithmetic mean of instantaneous value of each measurement position is average thickness.
The thickness measuring number of plies of table 1
| Nominal thickness/mm | The sample number of plies/layer |
| 0.01~0.1 | 10 |
| 0.1~0.2 | 5 |
| 0.2~0.7 | 3 |
| 0.7~2.5 | 1 |
2nd, by the method for aliquot length to determine to measure the location point of thickness, method is as follows：
Specimen length≤300mm, surveys at 10 points；
Specimen length surveys at 20 points between 300mm to 1500mm；
Specimen length >=1500mm, at least surveys at 30 points；
To the sample of non-cutting edge, measurement should started away from side 50mm.
3rd, thickness deviation should be calculated by formula (1)：
In formula (1)：
Wu--- maximum (minimum) thickness deviation, unit is %；
δ1--- thickness maximum (minimum) value of each measurement position, unit is millimeter (mm)；
δ0--- nominal thickness, unit is millimeter (mm).
Embodiment 1
Fig. 1 is the disk roller schematic diagram of the embodiment of the present invention 1.Wherein first pair pinch roller 13 is that mid diameter is bigger than two ends diameter
Fluorubber wheel high in 0.1mm, 12, second pair of pinch roller 14 of main wheel, the 3rd pair of pinch roller 15 are cylindric steel wheel.Main wheel 12 and first
It is 1.5mm to the wheelspan between pinch roller 13, the wheelspan between first pair of pinch roller 13 and second pair of pinch roller 14 is 1.5mm, second couple
Wheelspan between pinch roller 14 and the 3rd pair of pinch roller 15 is 1.5mm.
The step of production TPU film, includes：Extruder is opened, while opening opposite-grinding device, controls to lead by oil heater
12, first pair of pinch roller of wheel, 13, second pair of pinch roller 14, the temperature of the 3rd pair of pinch roller 15 are respectively 90 DEG C, 50 DEG C, 0 DEG C, 0 DEG C；Will
TPU pellets put into extruder, and melting charge is extruded by the extrusion 11 of extruder, are tangentially cast in the left side of main wheel 12, main wheel
12nd, first rotates clockwise to pinch roller 13 and the 3rd pair of pinch roller 15 while second pair of pinch roller 14 is rotated counterclockwise.Melting charge elder generation
By main wheel 12 and first pair of first time of pinch roller 13 to pressure, then by first pair of pinch roller 13 and second pair second of pinch roller 14
To pressure, second pair of pinch roller 14 and the 3rd pair of third time of pinch roller 15 are eventually passed to pressure, the direction in Fig. 1 shown in arrow is TPU
The trend of film.
The TPU film thickness that embodiment 1 is obtained is 1.49mm, and thickness is uniform, and thickness deviation is 0.042%, and flattening degree is high,
And without trace.
Comparative example 1-1
With differing only in for embodiment 1：Save the 3rd pair of pinch roller 15.
The TPU film thickness that comparative example 1-1 is obtained is 1.51mm, and in uneven thickness, thickness deviation is 0.520%, flattening
Degree is slightly worse, there is slight trace.
Comparative example 1-2
With differing only in for embodiment 1：Save second pair of pinch roller 14 and the 3rd pair of pinch roller 15.
The TPU film thickness that comparative example 1-2 is obtained is 1.51mm, and in uneven thickness, thickness deviation is 0.910%, flattening
Degree is poor, there is trace.
Embodiment 2
Fig. 2 is the disk roller schematic diagram of the embodiment of the present invention 2.Wherein main wheel 22 and first pair of pinch roller 23 compare two ends for mid diameter
Steel wheel high in the big 0.08mm of diameter, second pair of pinch roller 24 and the 3rd pair of pinch roller 25 are mid diameter 0.08mm bigger than two ends diameter
In steel wheel high.Wheelspan between main wheel 22 and first pair of pinch roller 23 is 0.5mm, first pair of pinch roller 23 and the second pair of pinch roller 24 it
Between wheelspan be 0.5mm, wheelspan between second pair of pinch roller 24 and the 3rd pair of pinch roller 25 is 0.5mm.
The step of production TPU film, includes：Extruder is opened, while opening opposite-grinding device, controls to lead by oil heater
The temperature of wheel 22, first pair of pinch roller, 23, second pair of pinch roller 24 and the 3rd pair of pinch roller 25 is respectively 120,80,0 DEG C, 0 DEG C；By TPU
Pellet puts into extruder, and melting charge is extruded by the extrusion 21 of extruder, is cast between main wheel 22 and first pair of pinch roller 23,
First rotates counterclockwise to pinch roller 23 and the 3rd pair of pinch roller 25 while 22, second pair of pinch roller 24 of main wheel is rotated clockwise.Melting
Material first passes through main wheel 22 and first pair of first time of pinch roller 23 to pressure, then by the of first pair of pinch roller 23 and the second pair of pinch roller 24
Secondary to eventually pass second pair of pinch roller 24 and the 3rd pair of third time of pinch roller 25 to pressure to pressure, the direction in Fig. 2 shown in arrow is
The trend of TPU membrane.3rd pair of pinch roller 25 will take to the TPU membrane after pressure and cooled down on cooling shaping wheel.
The TPU film thickness that embodiment 2 is obtained is 0.5mm, and thickness is uniform, and thickness deviation is 0.025%, and flattening degree is high,
And without trace.
Embodiment 3
Fig. 3 is the disk roller schematic diagram of the embodiment of the present invention 3.Wherein first pair pinch roller 33 and the 3rd pair of pinch roller 35 are centre directly
Fluorubber wheel high in the 0.05mm bigger than two ends diameter of footpath, 32, second pair of pinch roller 34 of main wheel, the 4th pair of pinch roller 36 and the 5th pair of pressure
Wheel 37 is cylindric steel wheel.Wheelspan between main wheel 32 and first pair of pinch roller 33 is 3mm, first pair of pinch roller 33 and second pair of pressure
Wheelspan between wheel 34 is 3mm, and the wheelspan between second pair of pinch roller 34 and the 3rd pair of pinch roller 35 is 3mm, the 3rd pair of He of pinch roller 35
Wheelspan between 4th pair of pinch roller 36 is 3mm, and the wheelspan between the 4th pair of pinch roller 36 and the 5th pair of pinch roller 37 is 3mm.
The step of production TPU film, includes：Extruder is opened, while opening opposite-grinding device, controls to lead by oil heater
32, first pair of pinch roller of wheel, 33, second pair of pinch roller 34, the 3rd pair of pinch roller 35, the 4th pair of pinch roller 36, the temperature of the 5th pair of pinch roller 37 are divided
Wei 100 DEG C, 40 DEG C, 30 DEG C, 30 DEG C, 30 DEG C, 30 DEG C；TPU pellets are put into extruder, is squeezed by the extrusion 31 of extruder
Go out melting charge, tangential curtain coating in the left side of main wheel 32, what 32, second pair of pinch roller 34 of main wheel, the 4th pair of pinch roller 36 were rotated counterclockwise
First pair of pinch roller 33, the 3rd pair of pinch roller 35, the 5th pair of pinch roller 37 are rotated clockwise simultaneously.Melting charge first passes through main wheel 32 and first
To first time of pinch roller 33 to pressure, then by first pair of pinch roller 33 and second pair second of pinch roller 34 to pressure, first pair of pinch roller
33 and the 3rd pair of third time of pinch roller 35 to pressure, the 3rd pair of pinch roller 35 and the 4th pair the 4th of pinch roller 36 the time to pressure, eventually pass
4th pair of pinch roller 36 and the 5th pair the 5th of pinch roller 37 the time to pressure, the direction in Fig. 3 shown in arrow is the trend of TPU membrane.5th
Pinch roller 37 will be taken to the TPU membrane after pressure and cooled down on cooling shaping wheel.
The TPU film thickness that embodiment 3 is obtained is 3.0mm, and thickness is uniform, and thickness deviation is 0.002%, and flattening degree is high,
And without trace.
Comparative example 3-1
Fig. 5 is comparative example 3-1 disk roller schematic diagrames.Wherein first pair pinch roller 53 and the 3rd pair of pinch roller 55 are mid diameter ratio
Fluorubber wheel high in the big 0.06mm of two ends diameter, 52, second pair of pinch roller 54 of main wheel, the 4th pair of pinch roller 56, the 5th pair of pinch roller 57,
6th pair of pinch roller 58 is cylindric steel wheel.Wheelspan between main wheel 52 and first pair of pinch roller 53 is 2mm, first pair of He of pinch roller 33
Wheelspan between second pair of pinch roller 34 is 2mm, and the wheelspan between second pair of pinch roller 34 and the 3rd pair of pinch roller 35 is 2mm, the 3rd couple
Wheelspan between pinch roller 35 and the 4th pair of pinch roller 36 is 2mm, and the wheelspan between the 4th pair of pinch roller 36 and the 5th pair of pinch roller 37 is
2mm, the wheelspan between the 5th pair of pinch roller 57 and the 6th pair of pinch roller 58 is 2mm.
The step of production TPU film, includes：Extruder is opened, while opening opposite-grinding device, controls to lead by oil heater
Wheel 52, first pair of pinch roller 53, second pair of pinch roller 54, the 3rd pair of pinch roller 55, the 4th pair of pinch roller 56, the 5th pair of pinch roller 57, the 6th pair
The temperature of pinch roller 58 is respectively 100 DEG C, 40 DEG C, 30 DEG C, 30 DEG C, 30 DEG C, 30 DEG C, 30 DEG C；TPU pellets are put into extruder, is led to
The extrusion melting charge of extrusion 51 of extruder is crossed, is tangentially cast in the left side of main wheel 52,52, second pair of pinch roller the 54, the 4th of main wheel
First to pinch roller 53, the 3rd pair of pinch roller 55, the 5th suitable to pinch roller 57 while being rotated counterclockwise to pinch roller 56, the 6th pair of pinch roller 58
Hour hands are rotated.Melting charge first passes through main wheel 52 and first pair of first time of pinch roller 53 to pressure, then by first pair of pinch roller 53 and the
To pressure, first pair of pinch roller 53 and the 3rd pair of third time of pinch roller 55 are to pressure, the 3rd pair of He of pinch roller 55 for second of the two pairs of pinch rollers 54
4th pair the 4th of pinch roller 56 the time to pressure, the 4th pair of pinch roller 56 and the 5th pair the 5th of pinch roller 57 the time to pressure, eventually pass the 5th
To pinch roller 57 and the 6th pair the 6th of pinch roller 58 the time to pressure, the direction in Fig. 5 shown in arrow is the trend of TPU membrane.6th pair of pressure
Wheel 58 will take to the TPU membrane after pressure and cooled down on cooling shaping wheel.
The TPU film thickness that comparative example 3-1 is obtained is 2.0mm, and thickness is uniform, and thickness deviation is 0.035%, flattening degree
Height, and without trace.
Comparative example 3-2
Fig. 6 is comparative example 3-2 disk roller schematic diagrames.Wherein first pair pinch roller 63 and the 3rd pair of pinch roller 65 are mid diameter ratio
Fluorubber wheel high in the big 0.04mm of two ends diameter, 62, second pair of pinch roller 64 of main wheel, the 4th pair of pinch roller 66, the 5th pair of pinch roller 67,
6th pair of pinch roller 68, the 7th pair of pinch roller 69, the 8th pair of pinch roller 60 are cylindric steel wheel.Between main wheel 62 and first pair of pinch roller 63
Wheelspan be 2.5mm, wheelspan between first pair of pinch roller 33 and second pair of pinch roller 34 is 2.5mm, second pair of pinch roller 34 and the 3rd
It is 2.5mm to the wheelspan between pinch roller 35, the wheelspan between the 3rd pair of pinch roller 35 and the 4th pair of pinch roller 36 is 2.5mm, the 4th couple
Wheelspan between pinch roller 36 and the 5th pair of pinch roller 37 is 2.5mm, and the wheelspan between the 5th pair of pinch roller 67 and the 6th pair of pinch roller 68 is
2.5mm, the wheelspan between the 6th pair of pinch roller 68 and the 7th pair of pinch roller 69 is 2.5mm, the 7th pair of pinch roller 69 and the 8th pair of pinch roller 60
Between wheelspan be 2.5mm.
The step of production TPU film, includes：Extruder is opened, while opening opposite-grinding device, controls to lead by oil heater
Wheel 62, first pair of pinch roller 63, second pair of pinch roller 64, the 3rd pair of pinch roller 65, the 4th pair of pinch roller 66, the 5th pair of pinch roller 67, the 6th pair
Pinch roller 68, the 7th pair of pinch roller 69, the temperature of the 8th pair of pinch roller 60 be respectively 100 DEG C, 40 DEG C, 30 DEG C, 30 DEG C, 30 DEG C, 30 DEG C, 30
℃、30℃、30℃；TPU pellets are put into extruder, melting charge is extruded by the extrusion 61 of extruder, be tangentially cast in master
The left side of wheel 62,62, second pair of pinch roller 64 of main wheel, the 4th pair of pinch roller 66, the 6th pair of pinch roller 68, the 8th pair of pinch roller 60 turn counterclockwise
First rotates clockwise to pinch roller 63, the 3rd pair of pinch roller 65, the 5th pair of pinch roller 67, the 7th pair of pinch roller 69 while dynamic.Melting charge
Main wheel 62 and first pair of first time of pinch roller 63 are first passed through to pressure, then by first pair of pinch roller 63 and second pair the second of pinch roller 64
It is secondary to pressure, first pair of pinch roller 63 and the 3rd pair of third time of pinch roller 65 to pressure, the of the 3rd pair of pinch roller 65 and the 4th pair of pinch roller 66
Four times to pressure, the 4th pair of pinch roller 66 and the 5th pair the 5th of pinch roller 67 the time to pressure, eventually pass the 5th pair of pinch roller 67 and the 6th pair
The 6th time of pinch roller 68 to pressure, the 6th pair of pinch roller 68 with the 7th pair the 7th of pinch roller 69 the time to press, eventually pass the 7th pair of pinch roller
69 and the 8th pair the 8th of pinch roller 60 the time to pressure, the direction in Fig. 6 shown in arrow is the trend of TPU membrane.8th pair of pinch roller 60 will
TPU membrane after pressure is taken on cooling shaping wheel and cool down.
The TPU film thickness that comparative example 3-2 is obtained is 2.5mm, and thickness is uniform, and thickness deviation is 0.022%, flattening degree
Height, and without trace.
Embodiment 4
Fig. 4 is the disk roller schematic diagram of the embodiment of the present invention 4.Wherein main wheel 42 is mid diameter 0.05mm's bigger than two ends diameter
Middle fluorubber wheel high, first pair of pinch roller 43 is fluorubber wheel high in mid diameter 0.01mm bigger than two ends diameter, second pair of pressure
The 44, the 3rd pair of pinch roller 45 of wheel and the 4th pair of pinch roller 46 are cylindric steel wheel.Wheelspan between main wheel 42 and first pair of pinch roller 43
It is 4mm, the wheelspan between first pair of pinch roller 43 and second pair of pinch roller 44 is 4mm, between second pair of pinch roller 44, the 3rd pair of pinch roller 45
Wheelspan be 4mm, wheelspan between the 3rd pair of pinch roller 45 and the 4th pair of pinch roller 46 is 4mm.
The step of production TPU film, includes：Extruder is opened, while opening opposite-grinding device, controls to lead by oil heater
The temperature of wheel 42, first pair of pinch roller 43, second pair of pinch roller 44, the 3rd pair of pinch roller 45 and the 4th pair of pinch roller 46 be respectively 40 DEG C, 80
℃、50℃、0℃、0℃；TPU pellets are put into extruder, melting charge is extruded by the extrusion 41 of extruder, tangential curtain coating exists
The right side of main wheel 42, first to the and of pinch roller 43 while 42, second pair of pinch roller 44 of main wheel and the 4th pair of pinch roller 46 are rotated clockwise
3rd pair of pinch roller 45 is rotated counterclockwise.Melting charge is by main wheel 42 and first pair of first time of pinch roller 43 to pressure, first pair of pinch roller
43 and second of the second pair of pinch roller 44 to pressure, second pair of pinch roller 44 and the 3rd pair of third time of pinch roller 45 are to pressure, the 3rd pair of pressure
Wheel 45 and the 4th pair the 4th of pinch roller 46 the time to pressure, the direction in Fig. 4 shown in arrow is the trend of TPU membrane.Finally, the 4th pair of pressure
Wheel 46 will take to the TPU membrane after pressure and cooled down on cooling shaping wheel.
The TPU film thickness that embodiment 4 is obtained is 4.0mm, and thickness is uniform, and thickness deviation is 0.008%, and flattening degree is high,
And without trace.
Applicant states that the present invention illustrates detailed construction feature of the invention by above-described embodiment, but the present invention is simultaneously
Above-mentioned detailed construction feature is not limited to, that is, does not mean that the present invention has to rely on above-mentioned detailed construction feature and could implement.Institute
Category those skilled in the art it will be clearly understood that any improvement in the present invention, to the equivalence replacement of part selected by the present invention
And increase, the selection of concrete mode of accessory etc., within the scope of all falling within protection scope of the present invention and disclosing.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned implementation method
Detail, in range of the technology design of the invention, various simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of method for producing TPU film, it is characterised in that including：By TPU raw materials be cast and through 3~5 times to pressure after
Obtain TPU film.
2. the method for producing TPU film as claimed in claim 1, it is characterised in that described pair of pressure number of times is 3 or 4 times.
3. the method for production TPU film as claimed in claim 1, it is characterised in that described pair be pressed in after the curtain coating or
Described pair pressure with it is described curtain coating synchronously carry out.
4. the method for the production TPU film as described in any one of claims 1 to 3, it is characterised in that described pair of pressure is by pressure
Device realizes that the opposite-grinding device includes disk roller, and the disk roller includes main wheel and to pinch roller, and the axle of disk roller is mutual described in any two
It is parallel.
5. the method for producing TPU film as claimed in claim 4, it is characterised in that the disk roller is middle wheel or cylindric high
Wheel；The middle wheel high refers to the disk roller of mid diameter 0.01mm~20mm bigger than two ends diameter；
Preferably, the material of the disk roller is selected from steel, alloy steel products, natural gum, NBR, the glue of second third, polyurethane, silicon rubber
Any one in glue, fluorubber and carbon fiber.
6. the method for the production TPU film as described in claim 4 or 5, it is characterised in that the axle of any three disk rollers exists
On same plane or in Different Plane；
Preferably, the wheelspan between disk roller described in adjacent two is 0.005~10mm, preferably 0.01~5mm.
7. the method for the production TPU film as described in any one of claim 4~6, it is characterised in that during described pair of pressure,
Disk roller described in adjacent two is rotated in opposite directions.
8. the method for the production TPU film as described in any one of claim 4~7, it is characterised in that during described pair of pressure,
The temperature of the disk roller is 0 DEG C~180 DEG C；
Preferably, the temperature of the disk roller is adjusted by temperature regulating device；
Preferably, the temperature regulating device includes oil heater, heat-conducting oil furnace, hot oil furnace, heat conducting oil boiler, water type die heater, oil
Any one in formula die heater, high temperature die heater, roller temperature controlling machine, disk roller temperature controlling machine, roller heating machine or at least two
Combination.
9. the method for the production TPU film as described in any one of claim 4~8, it is characterised in that the curtain coating includes：Institute
State TPU raw materials extruded machine extrusion, curtain coating is on the main wheel and/or main wheel and between pinch roller.
10. the method for the production TPU film as described in any one of claim 1~9, it is characterised in that after described pair of pressure also
Including cooling；
Preferably, the cooling includes：Cooled down by taking on cooling shaping wheel the TPU film after to pressure to pinch roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153352.4A CN106863833A (en) | 2017-03-15 | 2017-03-15 | A kind of method for producing TPU film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153352.4A CN106863833A (en) | 2017-03-15 | 2017-03-15 | A kind of method for producing TPU film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106863833A true CN106863833A (en) | 2017-06-20 |
Family
ID=59170758
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710153352.4A Pending CN106863833A (en) | 2017-03-15 | 2017-03-15 | A kind of method for producing TPU film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109517202A (en) * | 2018-11-22 | 2019-03-26 | 广东天跃新材料股份有限公司 | Apply the silicon rubber-TPU composite material and its manufacturing technology of the wear-resisting waterproof on footwear |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377908A (en) * | 2001-03-14 | 2002-11-06 | 住友化学工业株式会社 | Method for producing resin film material and resin film material |
| CN1976797A (en) * | 2004-05-04 | 2007-06-06 | 克洛佩塑料产品公司 | Method and apparatus for uniformly stretching thermoplastic film and products produced thereby |
-
2017
- 2017-03-15 CN CN201710153352.4A patent/CN106863833A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377908A (en) * | 2001-03-14 | 2002-11-06 | 住友化学工业株式会社 | Method for producing resin film material and resin film material |
| CN1976797A (en) * | 2004-05-04 | 2007-06-06 | 克洛佩塑料产品公司 | Method and apparatus for uniformly stretching thermoplastic film and products produced thereby |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109517202A (en) * | 2018-11-22 | 2019-03-26 | 广东天跃新材料股份有限公司 | Apply the silicon rubber-TPU composite material and its manufacturing technology of the wear-resisting waterproof on footwear |
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