CN1229717A - Double axial extension polypropylene nacreous synthetic paper and its mfg. method - Google Patents
Double axial extension polypropylene nacreous synthetic paper and its mfg. method Download PDFInfo
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Abstract
A biaxially stretched synthetic nacreous polypropene paper is composed of three layers (surficial paper or resin layer, central foamed layer and surficial paper or resin layer) and made up through extrusion by dual-screw extruder, collecting to same T-shaped die head, and co-squeezing. For polyacryl resin and inorganic composition, one primary and two secondary dual-screw extruders are used. The extruded-out matter is gathered to same die head to form a three-layer board. After cooling shaping, biaxial stretch, corona treating and rolling, the synthetic paper is obtained.
Description
The present invention relates to a kind of Biaxial Polypropylene Synthetic Paper and Its Manufacturing Methods, refer to a kind of Biaxial Polypropylene Synthetic Paper and Its Manufacturing Methods of making in three-layer co-extruded pressure mode especially.
At present on the material characteristic, replace the manufacture paper with pulp technology of paper of natural pulp with polyolefin synthetic paper, be to be substrate layer (intermediate layer) to extension film with polyacrylic twin shaft, and go up the synthetic paper of the unidirectional extension film of polypropylene of the inorganic matter attritive powder that contains 8～65% (weight %) of fitting in its back of the body surface as the paper layer, this method has been suggested patent application and practicability, as Japanese Patent Publication 46-40794 number of Japanese prince's oiling synthetic paper company, other has Japanese kokai publication sho 56-141339 number, Japanese kokai publication sho 56-118437 number, Japanese kokai publication hei 3-87255 number also is the patent application that proposes with regard to this technical scheme.
These method for makings are to utilize two extruders to make the upper and lower layer pouring film that increases between longitudinal extension device and horizontal expansion device at substrate layer to finish the paper layer, only can do laterally the paper layer, single shaft is to extension, its paper intensity is lower, and the easily shedding in the printing procedure for processing of inorganic material powders that the paper layer adds for increasing printing causes printing machine to take the puzzlement of normal removing paper powder; In addition because of the paper layer is that unidirectional extension get, variant with the overall elongation multiplying power of the two-way extension processing procedure of substrate layer, so when paper was heated, the shrinkage factor of paper layer and substrate layer was variant, paper easily produces wave transformation; Have again, make the upper and lower paper layer processing procedure that layer pouring film is finished that increase for asking the stable of processing procedure and product quality with two extruders, it produces on the speed and is very limited, so the finished width maximum after extending only reaches 6M, and single paper layer thickness must be greater than 10 μ (normally 30 μ), so product thickness is everlasting more than 60 μ, otherwise can influence printing processing because of product thickness skewness one.As a complete unit, because the process technique difficulty is higher, the production cost is also higher, thus limited on the sales volume of the product, be difficult for the use of large-scale popularization in various uses.
The object of the present invention is to provide a kind of Biaxial Polypropylene Synthetic Paper and Its Manufacturing Methods, work out the synthetic paper of three-decker at above-mentioned technological deficiency, each interlayer has identical extension ratio, has improved strength of paper, and has the thickness range of choice of broad.
The invention provides the synthetic paper of three-decker, three-decker is: paper layer or resin bed/foamed interlayer/paper layer or resin bed, elder generation pushes by double screw extruder and confluxes after same T die head co-extrusion pressure forms.
Wherein the polypropylene resin composite of foamed interlayer is the twin-screw main extruder extruding by a tool side feeding device, and the resin combination of paper layer or resin bed, then by the secondary extruder extruding of the twin-screw of two tool side feed, above-mentioned extrudate is confluxed and is imposed co-extrusion pressure again in same T pattern head and form three-decker, again through cooling, two-way extension, sided corona treatment, batch and form, can get two, the single face paper of 25～250 μ and the pearlescent synthetic paper of two-sided superbright face.
Described foamed interlayer is made by comprising the polypropylene resin composite that following raw materials according forms: 39～95 parts (weight portion) contains cis-structure crystalline polypropylene resin, 0～40 part of calcium carbonate powder, 0～20 part of titanium dioxide, 1～5 part of antistatic additive more than 97%; Described paper layer is then made by comprising the following resin combination of forming: polypropylene 22～99.5 parts of (weight portion), 0～12 part of polyvinyl resin, 0～20 part of titania powder, 0～40 part of calcium carbonate powder, 0～3 part in antistatic additive, 0.5～3 part of antiplastering aid, 0～2 part of ultra-violet absorber; Above-mentioned two kinds of compositions are pushed under 180～280 ℃ by the twin-screw main extruder of a tool side feeding device and the secondary extruder of twin-screw of two tool side feeding devices respectively, and conflux and squeeze out through same T die head, become the pearlescent synthetic paper plate, this plate is through 15～60 ℃ cooling wheel cooling forming, impose twin shaft then to extension, comprise preheating, extend and temper: make 3～6 times longitudinal extension earlier, 115～150 ℃ of preheat temperatures, remake 5～12 times horizontal expansion, 140～195 ℃ of temperature, the plate of handling through above-mentioned extension is the high frequency through 20～120KW power under (high frequency) sided corona treatment again, coils into the three-layer co-extruded pressure polypropylene pearlescent synthetic paper goods of thickness 25～250 μ with coiling machine at last and as the coating base stock that is coated with grade synthetic paper.
The inventive method is in three-layer co-extruded pressure mode, to each layer extrudate conflux the back co-extrusion pressure and through two-way extension and synthetic paper and located by prior art only to fit through the intermediate layer of two-way extension with through the paper layer of unidirectional extension and synthetic paper, in structure, all inequality on the method for making, simultaneously, it is the paper layer of titanium dioxide and calcium carbonate or the resin bed that does not add inorganic filler that the present invention also can select to use inorganic filler in secondary extruder raw material, makes the two-sided paper pearlescent synthetic paper of paper layer/foamed interlayer/paper layer, the coating base stock of the two-sided superbright face pearlescent synthetic paper of the single face paper pearlescent synthetic paper of paper layer/foamed interlayer/resin bed and resin bed/foamed interlayer/resin bed and conduct coating level synthetic paper.
The synthetic paper that the inventive method makes, because on the processing procedure and use on the composition of raw materials with located by prior art adopt the paper layer is done vertical unidirectional extension after, layer uniaxial extension layer technology that the pouring film forms that increase before the horizontal expansion has great difference, so more can be extended to the purposes that replaces natural paper with the material characteristic, its advantage can be listed below:
1, paper layer raw material is based on polypropylene, polyethylene, titanium dioxide, inorganic powder, and its atomized surface effect is good and colourity is white, and screening rate also surmounts traditional paper.
2, the paper layer intensity of two-way extension is good, and the outstanding surely property of inorganic powder is good, and the printing process can not produce shedding.
3, paper layer and resin bed have identical extension ratio with foamed interlayer, and paper shrinks homogeneous, be difficult for producing wavy distortion because of paper is heated, and the paper layer of identical extension ratio and foamed interlayer are difficult for layering usually.
4, the thickness range of paper layer and resin bed can be 1 μ～30 μ, is got by the extrusion capacity control of secondary extruder.(look product thickness demand and purposes demand, changed)
5, processing procedure produces speed greatly, and maximum can reach 3.5 tons/hour, produces maximum wide cut and can reach 8M, and the product thickness scope is wide, can reach 25～250 μ.
6, paper layer resin bed and foamed interlayer form in the extruding of the double screw extruder of tool side feed, and the raw material homogeneity of mixing is good, thus product thickness difference scope can be controlled in ± 2% in; And the present invention can use the powdered inorganic powder to send into extruder in the side feeding device, is not the compound grain (Master Batch) that only uses inorganic material powders, so can reduce the raw material use cost greatly; In addition, the compound grain that also can use inorganic powder is in single screw extrusion machine production, but must effectively improve L/D (length/diameter) ratio of extruder screw, reaches the mix effect of homogeneous of raw material.
7, the production cost is low, than the tool market competitiveness.
Below be respectively described below with regard to profax composition, manufacturing process aspects such as (comprise extruding, three-layer co-extruded pressure, cooling, twin shaft extension, sided corona treatment, batch):
Two-way stretched polypropylene pearly synthetic paper of the present invention is a three-decker, its foamed interlayer enters main extruder to containing high crystalline polypropylene and the antistatic additive of cis-structure more than 97% by even stirring of the feeding mouth of main frame front end by the twin-screw main extruder of a tool side feeding device, use inorganic matter such as calcium carbonate powder, titania powder in addition, by one or two side feeding devices, enter main extruder after metering, the composition of resin and inorganic material powders is clamp-oned in the intermediate flow channel of T pattern head after mixing evenly via the main extruder twin-screw; In addition, the paper layer by two of secondary extruders of the twin-screw of tool side feeding device to containing polypropylene, polyethylene, antistatic additive, antiplastering aid, the resin combination of ultra-violet absorber evenly enters secondary extruder after the stirring by the feeding mouth (HOPPER) of secondary machine front end, in addition with calcium carbonate powder, titania powder by one or two side feeding devices, via sending into secondary extruder after the metering, the composition of resin and inorganic powder is clamp-oned two side runners in the T pattern head after mixing evenly via secondary extruder double-screw.Above-mentioned three extruder extrudate are confluxed and are squeezed out through same T pattern head, form the three-decker plate of resin bed or paper layer/foamed interlayer/resin bed or paper layer, and through twin shaft to extension, sided corona treatment, batch the pearlescent synthetic paper of two, the single face paper that forms 25～250 μ.
The inventive method is suitable for cultural paper for making, and is that employing high-crystallinity polypropylene is a primary raw material.The used acrylic resin of the present invention is selected melt index (hereinafter to be referred as MFI) 0.5～8 (230 ℃/2.16kgASTM D1238) for use, mostly is the homogeneous polymer of cis-structure (ISOTACTIC) greatly.This kind macromolecule configuration allows the proper alignment between a strand, can be by molecular weight size and the distribution situation of selecting raw material, and the mechanical strength and the quality uniformity of control pearlescent synthetic paper.
The pearlescent synthetic paper that the inventive method makes be configured to three-decker, as shown in Figure 1, for the effect that makes the paper layer can reach imitative paperization is to cooperate polyethylene, inorganic powder, control glossiness, fluent writing sense and the printing adaptability effect of paper face by the adjustment of usage ratio.Polyethylene is selected the grade of melt index (MFI) 0.1～7 for use, and the different polyethylene of available MFI grade is controlled the intensity of paper.
The inorganic powder that the inventive method is used, it mainly acts on except that the density that reduces foamed interlayer and (utilizes the fine pore that extends processing procedure to produce), more can make the generation of paper layer be better than the fluent writing and the printing adaptability of general plastic paper.Inorganic powder can be selected from the multiple use of a kind of or fusion of the colony that calcium carbonate, diatomite, clay, calcium oxide, barium sulfate, titanium dioxide etc. form, its particle diameter 0.1～10 μ, and its consumption is looked product rerum natura demand and is determined.
The present invention makes the double screw extruder manufacturing of apparatus side feeding device, and its inorganic powder can be sent into extruder through the side feeding device, utilizes double screw extruder to reach the best dispersion effect that mixes; Also can use inorganic powder and resin earlier after foremost feeding mouth and various mixed with resin, to enter extruder more in addition through compound grain that pugging mullering is made.The other employed titania powder of the present invention, it mainly act as the opacity of adjusting product and whiteness, uviolresistance.
The employed antistatic additive of the inventive method can be adopted the used antistatic additive of existing general biaxial stretched polypropylene (BOPP), and it is mainly the tertiary amine class, the electrostatic effect that can be generated because of the processing friction by dividing a word with a hyphen at the end of a line property of the electric charge elimination of tertiary amine class.
The inventive method aborning, bonding mutually between the paper when preventing to batch synthetic paper, need to add antiplastering aid in addition, can use existing general biaxial stretched polypropylene used, silica (SILICA) for example, clay (CLAY), polymethyl methacrylate (PMMA), any of bead (GLASS BEAD) etc.
The specific gravity range of the polypropylene pearlescent synthetic paper goods that the inventive method makes is below 0.75, this can give adjustment by the change of constituent prescription, proportion 0.79 than Japanese kokai publication hei 3-87255 case is low, make the consumer can be under same units weight, more usable floor area is arranged, more economically in the use.
The two-way stretched polypropylene pearly synthetic paper that the inventive method makes is adopted the three-decker of paper layer/foamed interlayer/paper layer or resin bed, and its product rerum natura, production capacity also have inseparable relation with use prescription, equipment, operation.The two-way extension goods of general polypropylene screen, mostly be the transparent article that filler-free adds greatly, but the procedure for producing of the imitative paperization of the present invention needs to add a large amount of inorganic fillers, makes productivity, production capacity and the product quality stability of two-way extension processing procedure enjoy very big test.Below device, the step of the processing procedure conjunction with figs. that adopted of the single, double facial tissue Flour product of polypropylene pearlescent synthetic paper 25～250 μ that makes with regard to the inventive method, be illustrated as follows:
Fig. 1 is the three kind three-decker schematic diagrames of the three-layer co-extruded pressure twin shaft of the present invention to extended polypropylene (BOPP) pearlescent synthetic paper.
Fig. 2 is manufacturing process of the present invention and device schematic diagram.
Please refer to shown in Figure 1, wherein:
The pearlescent synthetic paper structure of the two-sided paper of a display paper surface layer/foamed interlayer/paper layer.
The pearlescent synthetic paper structure of the single face paper of b display paper surface layer/foamed interlayer/resin bed.
C shows the pearlescent synthetic paper structure of the two-sided paper of resin bed/foamed interlayer/resin bed.
With reference to shown in Figure 2:
1, extruder device 1 comprises the twin-screw main extruder of a tool side feeding device and the secondary extruder of twin-screw of two tool side feeding devices, its temperature impose a condition the raw material proportioning that is subjected to resin combination, MFI, degree of crystallinity, viscosity and produce the difference of linear speed, product thickness and different, but be set in usually in 180～280 ℃ of scopes.When temperature is lower than 180 ℃ the resin glue voltinism poor, can't be extruded T pattern head smoothly, cross gel and cracking phenomenon and can't produce and temperature has resin when being higher than 280 ℃.
The inventive method is to utilize three-layer co-extruded pressure mode to reach to three layers (paper layer or resin bed/foamed interlayer/paper layer or resin beds), and this is the runner design that utilizes T pattern head, through confluxing by T pattern head by three-layer co-extruded extrusion.
2, cooling forming wheel apparatus 2 adopts water-cooled or ventilation type cooling device, and the melt extruded thing through 180～280 ℃ of three-layer co-extruded extrusion of high temperature is implemented cooling and shaping.Whether the control of the chilling temperature of this processing procedure proper, with fabrication steps thereafter whether very big association arranged smoothly.Chilling temperature is generally 15～60 ℃, decides on the thickness and the production linear speed of synthetic paper plate, can appropriateness adjust in this scope.
3, longitudinal extension device 3 is for sending into through the cardboard of cooling forming, earlier give preheating 115～150 ℃ (make cal(l)iper and produce linear speed and decide) on required, make cardboard softening, impose low speed and extension at a high speed with two segmented modes again, give synthetic paper in mechanical strength longitudinally, tempering typing then, the longitudinal extension multiplying power is set in 3～6 times usually.
4, the horizontal expansion device 4: (decide) to give pre-thermal softening to what handle through above-mentioned longitudinal extension earlier on cal(l)iper and production linear speed than presspaper under 140～195 ℃, impose horizontal expansion again, last tempering typing makes pearlescent synthetic paper work part retraction and increases dimensional stability.Usually the horizontal expansion multiplying power is set in 5～12 times, and this can require according to the characteristic of goods and decide.
5, corona treatment plant 5: this processing is for improving the physical characteristic of polypropylene pearlescent synthetic paper paper, make it to be suitable for printing, different processing such as coating, gluing, it is high frequency (high frequency) electric discharge device (looking the production linear speed is adjusted) of 20～120KW that sided corona treatment adopts power, makes the wetting tension on surface reach 36～48dyne/cm.
6, devices for taking-up 6 is to utilize an iron pipe that the above-mentioned pearlescent synthetic paper of finishing of producing is coiled into the wide finished product of 8M, thereafter also can be according to optionally giving itemize, cutting into slices, be packaged into 25～250 μ packages or product on chip.
The two-way stretched polypropylene pearly synthetic paper of thickness 25～250 μ that the inventive method makes, its threeply degree ratio is as follows:
Wherein, paper layer and resin layer thickness can be looked product demand and be adjusted between 1～30 μ.
Below in conjunction with embodiment illustrate the inventive method produce write, print, pack with and the synthetic paper of all kinds of paper extensive uses.But this is not to limit patent working category of the present invention.
Embodiment one
With 67 parts of (parts by weight of polypropylene (MFI:2.4), as follows), 3 parts in antistatic additive, mix the back and enter the twin-screw main extruder of tool side feeding device by feeding mouth, and with 10 parts of 20 parts of calcium carbonate powders and titanium dioxide by sending into the twin-screw main extruder by two side feeding devices respectively after the dosing machine metering; After in addition 1 part of 62 parts of polypropylene (MFI:5), 12 parts of polyethylene (MFI:1), 2 parts in antistatic additive, 3 parts of antiplastering aids, ultra-violet absorber being mixed with mixer, send into the secondary extruder of twin-screw 1# of tool side feeding device by feeding mouth, and with 10 parts of 10 parts of calcium carbonate powders and titanium dioxide by sending into the secondary extruder of twin-screw 2# by two side feeding devices respectively after the dosing machine metering; 97 parts of polypropylene (MFI:2.4), after being mixed by mixer, 3 parts of antiplastering aids send into the secondary extruder of twin-screw 2# of tool side feed, and under 200～280 ℃ of extruder temperatures, go out mode and extrude with three-layer co-extruded through T pattern head, through cooling wheel under 15～60 ℃ of temperature ranges, with polypropylene pearlescent synthetic paper plate cooling forming, cardboard after the moulding enters the longitudinal extension device, is set under 120～150 ℃ in temperature, gives preheating earlier, remake 5 times of longitudinal extensions, give the tempering cooling after the extension again, send into the horizontal expansion device after the cooling again, under 150～185 ℃ of temperature, give preheating earlier, remake 9 times of horizontal expansions, give the tempering cooling after the extension again, with the relaxation shrinkage of control synthetic paper, after above-mentioned cardboard goes out the horizontal expansion device, through sided corona treatment, make synthetic paper that good printing processability be arranged again, batch with coiling machine more at last.Can make single face paper pearlescent synthetic paper below 250 μ with said process, can be widely used in write, print, packing and all kinds of paper purposes.
Thickness 60 μ, 100 μ that make with present embodiment, the single face paper pearlescent synthetic paper structure of 120 μ are shown in b among Fig. 1, and its rerum natura is as shown in the table:
Embodiment two
With 68 parts of (parts by weight of acrylic resin (MFI:2.4), as follows), after 2 parts of mixing of antistatic additive, send into the twin-screw main extruder of tool side feeding device by feeding mouth, and with 15 parts of 15 parts of calcium carbonate powders and titanium dioxide by sending into the twin-screw main extruder by two side feeding devices respectively after the metering; In addition with 58 parts of polypropylene (MFI:5), 12 parts of polyethylene (MFI:1), 2 parts in antistatic additive, 3 parts of antiplastering aids, after 1 part of ultra-violet absorber mixes with mixer, send into 1# respectively by feeding mouth, the secondary extruder of 2 twin-screws of 2# tool side feeding device, and with 12 parts of 12 parts of calcium carbonate powders and titanium dioxide by after the dosing machine metering, send into 1# separately by two side feeding devices respectively, the secondary extruder of 2# twin-screw, and under 200～280 ℃ of extruder temperatures, go out mode and extrude with three-layer co-extruded through T pattern head, through cooling wheel under 25～60 ℃ of temperature, with polypropylene pearlescent synthetic paper plate cooling forming, cardboard after the moulding is sent into the longitudinal extension device, under 120～150 ℃, give preheating earlier, remake 4.5 times of longitudinal extensions, extend back tempering cooling, send into the horizontal expansion device after the cooling again,, remake 8.5 times of horizontal expansions 155～190 ℃ of following preheatings, extend the tempering cooling, with the relaxation shrinkage of control synthetic paper; After going out the horizontal expansion device,, make synthetic paper that good printing processability be arranged, batch with coiling machine more at last again through sided corona treatment.Can make the following two-sided paper pearlescent synthetic paper of 250 μ in the above described manner, can be widely used in write, print, packing and all kinds of paper purposes.
The thickness that present embodiment makes is respectively the double faced paper pearlescent synthetic paper of 60 μ, 100 μ, 150 μ, and its structure is shown in a among Fig. 1, and rerum natura such as following table are as showing:
Embodiment three
With 62 parts of polypropylene (MFI:2.4), 13 parts in antistatic additive, mix tool side feeding device is sent in the back by feeding mouth twin-screw main extruder with mixer, and with 15 parts of 20 parts of calcium carbonate powders and titanium dioxide by sending into the twin-screw main extruder by two side feeding devices respectively after the dosing machine metering, in addition with 96 parts of polypropylene (MFI:3.0), 2 parts in antistatic additive, after 2 parts of antiplastering aids are mixed by mixer, send into the twin-screw 1# of tool side feed, in the secondary extruder of 2#, and under 200～280 ℃ of extruder temperatures, go out mode and extrude with three-layer co-extruded through T pattern head, through cooling wheel under 15～60 ℃ of temperature with polypropylene pearlescent synthetic paper plate cooling forming, cardboard after the moulding is under 120～150 ℃ of temperature, elder generation's preheating, remake 5 times of longitudinal extensions, give the tempering cooling after the extension again, enter the horizontal expansion device after the cooling again, under 150～185 ℃ of the temperature, elder generation's preheating, remake 9 times of horizontal expansions, give the tempering cooling after the extension again, relaxation shrinkage with the control synthetic paper, after going out the horizontal expansion device, through sided corona treatment, make synthetic paper that good printing processability be arranged, batch with coiling machine at last.
Can make the following two-sided paper pearlescent synthetic paper of 250 μ in the above described manner, can extensively write, print, pack and all kinds of paper purposes with what.
The thickness that makes with present embodiment is respectively the two-sided superbright face pearlescent synthetic paper of 70 μ, 110 μ, 140 μ, and its structure is shown in c among Fig. 1, and rerum natura such as following table are represented.
Claims (8)
1, a kind of double axial extension polypropylene nacreous synthetic paper is characterized in that, this synthetic paper has three-decker: paper layer or resin bed/foamed interlayer/paper layer or resin bed, and by double screw extruder extruding and conflux and form through same T die head co-extrusion pressure.
2, double axial extension polypropylene nacreous synthetic paper according to claim 1 is characterized in that, this synthetic paper thickness 25～250 μ.
3, double axial extension polypropylene nacreous synthetic paper according to claim 1 is characterized in that, described three-decker comprises: paper layer/foamed interlayer/paper layer, paper layer/foamed interlayer/resin bed or resin bed/foamed interlayer/resin bed.
4, a kind of manufacture method of double axial extension polypropylene nacreous synthetic paper, it is characterized in that, this synthetic paper has three-decker: paper layer or resin bed/foamed interlayer/paper layer or resin bed, by double screw extruder extruding and conflux and form through same T die head co-extrusion pressure, wherein, described foamed interlayer is made by comprising the polypropylene resin composite that following raw materials according forms: 39～95 parts (weight portion) contains cis-structure crystalline polypropylene resin, 0～40 part of calcium carbonate powder, 0～20 part of titanium dioxide, 1～5 part of antistatic additive more than 97%; Described paper layer is then made by comprising the following resin combination of forming: polypropylene 22～99.5 parts of (weight portion), 0～12 part of polyvinyl resin, 0～20 part of titania powder, 0～40 part of calcium carbonate powder, 0～3 part in antistatic additive, 0.5～3 part of antiplastering aid, 0～2 part of ultra-violet absorber; Above-mentioned two kinds of compositions are pushed under 180～280 ℃ by the twin-screw main extruder of a tool side feeding device and the secondary extruder of twin-screw of two tool side feeding devices respectively, and conflux and squeeze out through same T die head, become the pearlescent synthetic paper plate, this plate is through 15～60 ℃ cooling wheel cooling forming, impose twin shaft then to extension, comprise preheating, extend and temper: make 3～6 times longitudinal extension earlier, 115～150 ℃ of preheat temperatures, remake 5～12 times horizontal expansion, 140～195 ℃ of design temperatures, the plate of handling through the above-mentioned extension high-frequency corona through 20～120KW power is under again handled, and coils into the three-layer co-extruded pressure polypropylene pearlescent synthetic paper person of thickness 25～250 μ with coiling machine at last and as the coating base stock that is coated with grade synthetic paper.
5, the manufacture method of double axial extension polypropylene nacreous synthetic paper according to claim 4 is characterized in that, described resin combination does not add inorganic filler titania powder and calcium carbonate powder in forming, and obtains resin bed.
6, according to the manufacture method of claim 4 or 5 described double axial extension polypropylene nacreous synthetic papers, it is characterized in that, the polypropylene resin composite of foamed interlayer is by the twin-screw main extruder extruding of a tool side feeding device, and the resin combination of described paper layer or resin bed, then by the secondary extruder extruding of the twin-screw of two tool side feed.
7, the manufacture method of double axial extension polypropylene nacreous synthetic paper according to claim 4 is characterized in that, the melt index of the acrylic resin that uses in this polypropylene resin composite is 0.5～8.
8, the manufacture method of double axial extension polypropylene nacreous synthetic paper according to claim 4 is characterized in that, the poly melt index of using in the described resin combination is 0.1～7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99105768A CN1089671C (en) | 1999-04-15 | 1999-04-15 | Double axial extension polypropylene nacreous synthetic paper and its mfg. method |
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| CN99105768A CN1089671C (en) | 1999-04-15 | 1999-04-15 | Double axial extension polypropylene nacreous synthetic paper and its mfg. method |
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| CN1229717A true CN1229717A (en) | 1999-09-29 |
| CN1089671C CN1089671C (en) | 2002-08-28 |
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| CN99105768A Ceased CN1089671C (en) | 1999-04-15 | 1999-04-15 | Double axial extension polypropylene nacreous synthetic paper and its mfg. method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1133535C (en) * | 1999-07-28 | 2004-01-07 | 南亚塑胶工业股份有限公司 | Improved polypropylene pearlescent synthetic paper making method |
| CN101362388B (en) * | 2007-08-10 | 2012-05-30 | 泉州利昌塑胶有限公司 | Biaxial stretching polypropylene film and preparation method thereof |
| CN101391501B (en) * | 2007-09-20 | 2012-07-04 | 泉州利昌塑胶有限公司 | Biaxial stretching polypropylene film for paper and plastic thermal compounding and preparation method thereof |
| WO2014169448A1 (en) * | 2013-04-17 | 2014-10-23 | 香港格林天使科技有限公司 | Environmentally friendly stone paper and preparation method therefor |
| CN110757926A (en) * | 2018-07-25 | 2020-02-07 | 泉州利昌新材料科技有限公司 | Synthetic paper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209586Y (en) * | 1994-07-29 | 1995-10-11 | 南亚塑胶工业股份有限公司 | Three-layer co-squeezing biaxial stretching polypropylene synthetic paper |
-
1999
- 1999-04-15 CN CN99105768A patent/CN1089671C/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1133535C (en) * | 1999-07-28 | 2004-01-07 | 南亚塑胶工业股份有限公司 | Improved polypropylene pearlescent synthetic paper making method |
| CN101362388B (en) * | 2007-08-10 | 2012-05-30 | 泉州利昌塑胶有限公司 | Biaxial stretching polypropylene film and preparation method thereof |
| CN101391501B (en) * | 2007-09-20 | 2012-07-04 | 泉州利昌塑胶有限公司 | Biaxial stretching polypropylene film for paper and plastic thermal compounding and preparation method thereof |
| WO2014169448A1 (en) * | 2013-04-17 | 2014-10-23 | 香港格林天使科技有限公司 | Environmentally friendly stone paper and preparation method therefor |
| CN110757926A (en) * | 2018-07-25 | 2020-02-07 | 泉州利昌新材料科技有限公司 | Synthetic paper |
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| CN1089671C (en) | 2002-08-28 |
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Assignee: South Asia plastic film (Nantong) Co., Ltd. Assignor: Nanya Plastics Industry Co., Ltd. Contract fulfillment period: From January 5, 2005 to January 5, 2010 Contract record no.: 051000030087 Denomination of invention: Biaxially oriented polypropylene pearlescent synthetic paper and process for producing the same Granted publication date: 20020828 License type: exclusive license Record date: 20051010 |
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Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2005.1.5 TO 2010.1.5 Name of requester: NANYA RUBBER GLUE FILM( NANTONG ) CO., LTD. Effective date: 20051010 |
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