CN1169912A - Synthetic plastic paper and method for preparing the same - Google Patents

Synthetic plastic paper and method for preparing the same Download PDF

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Publication number
CN1169912A
CN1169912A CN97112767A CN97112767A CN1169912A CN 1169912 A CN1169912 A CN 1169912A CN 97112767 A CN97112767 A CN 97112767A CN 97112767 A CN97112767 A CN 97112767A CN 1169912 A CN1169912 A CN 1169912A
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China
Prior art keywords
alpha
olefin
melt index
gram
astm
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CN97112767A
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Chinese (zh)
Inventor
李秉炯
朴仁河
尹熙昌
李章源
尹镐一
金石珍
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Yukong Ltd
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Yukong Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide

Abstract

The invention relates to a printable excellent synthetic plastic paper, comprising a single-layer or multi-layer structure, one or two surfacial layers of the paper are in a continuous three-dimensional web state. 30-80wt percent polypropylene component and 20-70wt percent resin component are mixed evenly; one or two superficial layers of the paper are prepared with such mixture to form a single-layer or multi-layer piece or pipe; the piece or pipe is stretched in single or double axial direction.

Description

Synthetic plastic paper and preparation method thereof
The present invention relates generally to the to have good printability single layer structure of (as the printing ink acceptance) or the synthetic plastic paper of sandwich construction, and preparation method thereof.More particularly, the present invention relates to its one or two top layer has continuous three-dimensional netted thing, and should the surface by the plastic paper of polypropylene component and the preparation of at least a mutually mutual exclusive thermoplastic resin.The present invention relates to prepare the method for synthetic plastic paper.
In order to overcome the shortcoming of conventional paper, as moisture-proof, life time of archive time etc., people just are being devoted to study synthetic paper.
United States Patent (USP) 3,799,828 have disclosed the synthetic paper that laminar structure is arranged.According to this patent, make film have printability by the micropore that in the skin of laminar structure, forms.This film preparation is as follows: the thermoplastic resin that will comprise the 0-.20% inorganic filler is stretched to about 2.5 times in vertical (machine direction) and obtains ground floor, comprise the thermoplastic resin that does not stretch of 0.5-65% unit machine filler at the one or both sides lamination of ground floor, laterally the laminar structure of gained is being stretched to about 2.5 times.At this moment, formed micropore at skin.Micropore also forms in the interface of thermoplastic resin and inorganic filler and ground floor, but the micropore that forms in the ground floor than the outer micropore much less that forms, its function is to improve mechanical performance, as film-strength.
Japan Patent 73004876 has disclosed similar technology, has used another kind of thermoplastic resin to replace inorganic filler in this technology.According to this patent, a plurality of micropores have caused opacity, and provide printability, as the printing ink acceptance, these micropores have been formed by near the interface of sheet between two or more mutually mutual exclusive thermoplastic resin components that forms by described mixture that the vitrification point of mixture or softening temperature, stretch.In the thermoplastic resin intermixture, the higher resin of fusing point has the effect as above-mentioned United States Patent (USP) 3,799,828 described inorganic fillers.But this patent has also disclosed the internal layer that is only formed by a kind of thermoplastic resin and has been used as the outer field mechanical reinforce of printingout.
An object of the present invention is to provide printability, the synthetic plastic paper good as the printing ink acceptance.
A further object of the present invention provides the method for preparing synthetic plastic paper, and it is to use the novel method of conventional equipment, thereby has reduced production cost.
According to an aspect of the present invention, that the synthetic plastic paper that is provided has is single-or many-layer structure, it is netted that its one or two top layer is continuous three-dimensional, and this top layer is by comprising the preparation of compositions that 30-80wt% polypropylene component and 20-70wt% are selected from the resin Composition of polyethylene, poly-(ethylene vinyl acetate) copolymer, polystyrene and their mixture.
According to another aspect of the present invention, it provides the method for preparing synthetic plastic paper, and described method comprises the following steps:
A) resin Composition that makes 30-80wt% polypropylene component and 20-70wt% be selected from polyethylene, poly-(ethylene vinyl acetate) copolymer, polystyrene and their mixture mixes equably;
B) form and to have single-or the sheet or the pipe of sandwich construction, its one or two top layer is made by this mixture; With
C) be lower than the fusing point of described polypropylene component but the fusing point, vitrification point or the softening temperature that are higher than described resin Composition places an order-or two-axial tension sheet or pipe in temperature.
Other purpose of the present invention and aspect can obviously be found out referring to accompanying drawing with from the description of following embodiment.
Fig. 1 is according to the present invention, with the electron micrograph on the synthetic plastic paper surface of 3 * 1 times of stretchings;
Fig. 2 is according to the present invention, with the electron micrograph on the synthetic plastic paper surface of 8 * 1 times of stretchings;
Fig. 3 is according to the present invention, with the electron micrograph on the synthetic plastic paper surface of 3 * 6 times of stretchings;
Fig. 4 is according to the present invention, with the electron micrograph on the synthetic plastic paper surface of 5 * 5 times of stretchings.
The present invention relates to plastic paper, it prepares by the characterization method that is different from conventional method fully.
As mentioned above, by being well-known in the art at the interface of inorganic filler and thermoplastic resin or in the technology that the generation of interfaces micropore of two thermoplastic resins is given printability. But the net of not yet addressing by form three-dimensional in dystectic thermoplastic resin prepares the plastic foil that can print. According to this fact, we developed plastic paper and the preparation method.
Plastic paper of the present invention is characterised in that to make and comprises plastic hybrid that 30-80wt% polypropylene component and 20-70wt% be selected from the resin Composition of polyethylene, poly-(ethylene vinyl acetate) copolymer, polystyrene and their mixture and form and have continuous tridimensional network, no matter and plastic paper is single-or many-layer structure.
Plastic paper composition of the present invention comprises polypropylene component and the resin Composition that is selected from mutually mutual exclusive thermoplastic resin.
Polypropylene component is selected from: (1) Noblen; (2) comprise 25wt% or the ethylene-propylene copolymer of ethene still less; (3) comprise the propylene-alpha-olefin copolymers of 25wt% or the alpha-olefin that contains 4-10 carbon atom still less; (4) comprise the ethylene-propylene of 10wt% or ethene still less and 20wt% or the alpha-olefin that contains 10 carbon atoms of 4-still less-alpha-olefin terpolymer; (5) mixture of above-mentioned polymer. When measuring according to ASTM D 1238, polymer melt index (MI) separately in (1)-(5) is about 0.1-40g/10 minute.
According to the present invention, be preferably the 30-80wt% that polypropylene component accounts for the plastic paper composition total weight. When being separated by the melt composition generation, make this component consist of the net of continuous three-dimensional like this.
As resin Composition, can use (1) melt index (MI) to be/10 minutes line style high density polyethylene (HDPE) of 1-40 gram; (2) melt index (MI) is that 5-70 gram/10 minutes, density are the 0.86-0.94 gram per centimeter3Low density polyethylene (LDPE); (3) melt index (MI) is/10 minutes ethene-alpha-olefin copolymer of 1-40 gram, and it comprises 75wt% or the alpha-olefin that contains 3-10 carbon atom still less; (4) melt index (MI) is ethene-alpha-olefin-alpha-olefin of/10 minutes of 1-60 gram-alpha olefin copolymer, and it comprises total amount is below the 75wt%, differ from one another, respectively contain the alpha-olefin of 3-10 carbon atom; (5) melt index (MI) is/10 minutes vinyl-vinyl acetate copolymer of 3-60 gram; (6) melt index (MI) is/10 minutes polystyrene of 20-60 gram; Or (7) melt index (MI) is the mixture of/10 minutes above-mentioned polymer of 1-60 gram. (1)-(5) and the melt index (MI) of (7) resin Composition according to ASTM D 1238 (190 ℃, 2.16kg) measure, then (190 ℃ 5kg) are measured (6) component according to ASTM D 1238. According to the present invention, be preferably the 20-70wt% that resin Composition accounts for the plastic paper composition.
The below is the method that the present invention prepares plastic paper. At first the 30-80wt% polypropylene component is mixed equably with 30-70wt% resin Composition. This mixture is formed sheet or the pipe of single layer structure, or form sheet or the pipe of sandwich construction, at least one top layer of this structure. Any known method only can be used to form sheet or the pipe of the single layer structure that is made of the present composition. Can be by known method, such as industrial practical approach, comprise that the T-die head is extruded, lamination, blowing method or coating, make sheet or the pipe of sandwich construction, wherein at least one top layer is made of composition of the present invention. For example, for double-deck or pipe are arranged, composition of the present invention can form one deck wherein. For sheet or the pipe of the sandwich construction that three layers or more multi-layered number are arranged, composition of the present invention can form one of them or two top layers.
Before this forms step, can be randomly with titanium dioxide (TiO 2) add composition of the present invention. and/or in the composition of other layer to improve the whiteness and the opacity of gained synthetic plastic paper.In the scope that any inhibition of fracture when stretching does not take place, the better addition of titanium dioxide is counted 10wt% or still less by composition total weight.
At last, sheet that obtains like this or pipe at the fusing point that is lower than polypropylene component but the temperature that is higher than fusing point, vitrification point or the softening point of resin Composition place an order-or two-axial tension, obtain synthetic plastic paper of the present invention.
In this stage, sheet or manage available any known method comes successively or carries out vertically (machine direction) and cross directional stretch simultaneously as tentering method, two foaming method or inflation alignment films method,
At this moment, can control each axial draw ratio, making orientation back and the preceding surface area ratio scope of orientation is 1.2 to 100.In order to obtain the co-continuous form on the surface of synthetic paper, surface area ratio must be at least 1.2.Surface area ratio greater than 100 makes rough surface, causes printability to descend, because lip-deep Kong Taida.
Owing to from the teeth outwards the continuous three-dimensional net is arranged, synthetic plastic paper of the present invention is white, and has shown good printability.
Can better understanding be arranged to the present invention by the following example, these embodiment are used for setting forth, but are not to be used to limit the present invention.
EXPERIMENTAL EXAMPLE
With diameter 40 twin screw compounders, polypropylene component is mixed under 200-230 ℃ with resin Composition.By make mixture form the sheet of 1 millimeters thick with compression forming, by commercially available biaxial stretch-formed machine this sheet is carried out list-or two-axial tension then.The following example has provided representational example.
Example I-IV
As shown in table 1 below, melt index (MI) be 3.0 all-polypropylene (HPP) and melt index (MI) are 7.5 line style high density polyethylene (HDPE) (LHDPE) batch mixing.The composition of gained is formed sheet, under 156 ℃, this sheet is stretched 4 * 4 times then.Measure its printability and the total mist degree and the interior mist degree of sheet, the result is as shown in table 1 below.
Table 1
Embodiment number Composition (wt%) HPP LHDPE Draft temperature (℃) Draw ratio (multiple) Total mist degree (%) Interior mist degree (%) Printability
????I ????40 ????60 ????156 ????4×4 ????68 ????17 Low
????II ????50 ????50 ????156 ????4×4 ????91 ????91 High
????III ????60 ????40 ????156 ????4×4 ????91 ????85 High
????IV ????70 ????30 ????156 ????4×4 ????79 ????24 Low
From the data that provide as seen, the 50-60wt% Noblen has shown maximum printability.
EXAMPLE V-VIII
With example II identical polypropylene and resins sheet, under 156 ℃, be drawn into various sizes then.Measure its printability and the total mist degree and the interior mist degree of sheet, the result is as shown in table 2 below.
Table 2
Embodiment number Composition (wt%) HPP LHDPE Draft temperature (℃) Draw ratio (multiple) Total mist degree (%) Interior mist degree (%) Printability
????V ????50 ????50 ????156 ????3×1 ????- ????- Medium
????VI ????50 ????50 ????156 ????8×1 ????91 ????91 High
????VII ????50 ????50 ????156 ????3×6 ????91 ????91 High
????VIII ????50 ????50 ????156 ????5×5 ????91 ????90 High
Fig. 1-4 is respectively the electron micrograph on the surface of 3 * 1,8 * 1,3 * 6 and 5 * 5 times of sheets that stretch.No matter, by the visible draw ratio of these photos how the continuous three-dimensional net all can form on the surface of sheet.
Example I X-XVI
With the 50wt% melt index (MI) be 3.0 all-polypropylene (HPP) be selected from the resin Composition batch mixing of line style high density polyethylene (HDPE) (LHDPE), low density polyethylene (LDPE) (LDPE) and linear low density polyethylene (LLDPE) (LLDPE) and cast sheet.After 4 * 4 times of stretchings, the printability of test pieces holds the situation of change with the resin Composition melt index (MI), and the result is as shown in table 3 below.
Table 3
Melt index (MI) (g/10 minute)
Embodiment number ?HPP ???LHDPE ???LDPE ?LLDPE Draft temperature (℃) Draw ratio (multiple) Total mist degree (%) Interior mist degree (%) Printability
??IX ??3 ????1 ????156 ????4×4 ????85 ????37 Low
??X ??3 ????2.2 ????156 ????4×4 ????88 ????59 Medium
??XI ??3 ????5.0 ????156 ????4×4 ????91 ????89 High
??XII ??3 ????7.5 ????156 ????4×4 ????91 ????91 High
??XIII ??3 ????7.5 ????156 ????4×4 ????89 ????63 Medium
??XIV ??3 ????22 ????156 ????4×4 ????91 ????88 High
??XV ??3 ????43 ????156 ????4×4 ????91 ????90 High
??XVI ??3 ???20 ????156 ????4×4 ????91 ????85 High
Embodiment XVII-XXI
The composition that melt index (MI) is 7.5, comprise 50wt% homo-polypropylene (HPP) and 50wt% line style high density (LHDPE) is cast sheet, then with 4 * 4 times of stretchings.Test the change situation of its printability with the melt index (MI) of HPP, the result is as shown in table 4 below.
Table 4
Embodiment number Melt index (MI) (restraining/10 minutes) HPP LHDPE Draft temperature (℃) Draw ratio (multiple) Total mist degree (%) Interior mist degree (%) Printability
??XVII ????2 ??7.5 ????156 ????4×4 ????91 ????91 High
??XVIII ????3 ??7.5 ????156 ????4×4 ????91 ????91 High
??XIV ????8 ??7.5 ????156 ????4×4 ????91 ????91 High
??XX ????12 ??7.5 ????156 ????4×4 ????91 ????90 High
??XXI ????25 ??7.5 ????156 ????4×4 ????85 ????45 Medium
Embodiment XXII-XXV
Prepare synthetic paper by polypropylene component that is selected from random polypropylene (RPP) or ternary-polypropylene (TPP) and the mixture that is selected from the resin Composition of lienar for high density polyethylene (HDPE) (LHDPE), low density polyethylene (LDPE) (LDPE) and linear low density polyethylene (LLDPE) (LLDPE).The addition of polypropylene component 50% (weight) that continues, the draw ratio of paper is 4 * 4.Test its printability, the result is as shown in table 5 below.
Table 5
Melt index (MI) (g/10 minute)
Embodiment number RPP ?TPP ?LHDPE ?LDPE ?LLDPE Draft temperature (℃) Draw ratio (multiple) Total mist degree (%) Interior mist degree (%) Printability
XXII ?4.5 ??7.5 ????138 ?4×4 ????90 ????88 High
XXIII ?4.5 ????43 ????138 ?4×4 ????91 ????91 High
XXIV ?4.5 ????20 ????138 ?4×4 ????91 ????89 High
XXV ????5 ????43 ????125 ?4×4 ????89 ????49 Medium
Embodiment XXVI and XXVII
The printability of synthetic paper of preparation of compositions that from the melt index (MI) that comprises 50wt% is poly-(ethane-acetic acid ethyenyl ester) copolymer (PEVA) of 3.0 homo-polypropylene and 50wt% or polystyrene (PS) is as shown in table 6 below.Draw ratio is 4 * 4.
Table 6
Melt index (MI) (restraining/10 minutes)
Embodiment number HPP ?PEVA ????PS Draft temperature (℃) Draw ratio (multiple) Total mist degree (%) Interior mist degree (%) Printability
XXVI ????3 ????6 ????156 ??4×4 ????90 ????86 High
XXVII ????3 ????25 ????156 ??4×4 ????86 ????82 Medium
Embodiment 28
Prepare a kind of double-layer structure sheet, wherein one deck is made of the composition of example I-IV, another layer by melt index (MI) be 3.0 all-polypropylene (HPP) constitutes, and prepares a kind of three-decker sheet simultaneously, wherein two top layers are made of the composition of example I-IV, and internal layer is made of HPP.When multilayer tablet stretches to VIII as EXAMPLE V, on the surface of sheet, form the continuous three-dimensional net, obtained similar aperture.These multilayer synthetic papers are similar to the printability of the single-part stationery that the foregoing description makes.
In general, data show, the interior mist degree of synthetic paper since when stretching the micropore of portion and surface formation within it be increased, the printability of synthetic paper increases along with the increase of interior mist degree.
As previously mentioned, the composition that synthetic plastic paper of the present invention has is different from the composition of conventional synthetic paper fully, but the equipment of available routine prepares, and it is at printability like this, as the printing ink acceptance with make more favourable.
The present invention is described with way of example, but is understood that terminology used here only supplies to set forth to use and non-limiting usefulness.
Can make many improvement and change to the present invention for above-mentioned announcement people.Therefore be understood that in the appending claims scope that the present invention does not implement as described in the by specification.

Claims (7)

1. synthetic plastic paper, have single-or many-layer structure, it is characterized in that, its one or two top layer is continuously three-dimensional netted, and this top layer is by from comprising the preparation of compositions that 30-80wt% polypropylene component and 20-70wt% are selected from the resin Composition of polyethylene, poly-(ethylene vinyl acetate) copolymer, polystyrene and their mixture.
2. synthetic plastic paper according to claim 1 is characterized in that, described polypropylene component is selected from:
(1) polypropylene homopolymer;
(2) comprise the 25wt% or the ethylene-propylene copolymer of ethene still less;
(3) comprise the propylene-alpha-olefin copolymers of 25wt% or the alpha-olefin that contains 4-10 carbon atom still less;
(4) comprise the ethylene-propylene-alpha-olefin terpolymer of 10wt% or ethene still less and 20wt% or the alpha-olefin that contains 4-10 carbon atom still less; With
(5) above-mentioned mixture of polymers.
3. synthetic plastic paper according to claim 2 is characterized in that, described polymer (1)-(5) melt index (MI) separately was determined as 0.1-40g/10 minute according to ASTM D 1238.
4. synthetic plastic paper according to claim 1 is characterized in that, described resin Composition is selected from:
(1) according to ASTM D 1238 (190 ℃, 2.16kg) melt index (MI) of Ce Dinging is/10 minutes a line style high density polyethylene (HDPE) of 1-40 gram;
(2) (190 ℃, 2.16kg) melt index (MI) of Ce Dinging is that 5-70 gram/10 minutes, density are the 0.86-0.94 gram per centimeter according to ASTM D 1238 3Low density polyethylene (LDPE);
(3) according to ASTM D 1238 (190 ℃, 2.16kg) melt index (MI) of Ce Dinging is/10 minutes a ethene-alpha-olefin copolymer of 1-40 gram, it comprises 75wt% or the alpha-olefin that contains 3-10 carbon atom still less;
(4) according to (190 ℃ of ASTM D 1238,2.16kg) melt index (MI) measured is ethene-alpha-olefin-alpha-olefin-alpha olefin copolymer of/10 minutes of 1-60 gram, it comprise total amount be 75wt% following, differ from one another, respectively contain the alpha-olefin of 3-10 carbon atom;
(5) according to ASTM D 1238 (190 ℃, 2.16kg) melt index (MI) of Ce Dinging is/10 minutes a vinyl-vinyl acetate copolymer of 3-60 gram;
(6) according to ASTM D 1238 (190 ℃, 5kg) melt index (MI) of Ce Dinging is/10 minutes a polystyrene of 20-60 gram; With
(7) (190 ℃, 2.16kg) melt index (MI) of Ce Dinging is/10 minutes an above-mentioned mixture of polymers of 1-60 gram according to ASTM D 1238.
5. a method for preparing synthetic plastic paper comprises the following steps:
A) resin Composition that makes 30-80wt% polypropylene component and 20-70wt% be selected from polyethylene, poly-(ethylene vinyl acetate) copolymer, polystyrene and their mixture mixes equably;
B) form and to have single-or the sheet or the pipe of sandwich construction, its one or two top layer is made by this mixture; With
C) at the fusing point that is lower than described polypropylene component but the temperature fusing point vitrification point or softening temperature that is higher than described resin Composition place an order-or two-axial tension sheet or pipe.
6. method according to claim 5 is characterized in that, so that before the described stretching step and rear surface is long-pending than the pipe in described that stretches of the draw ratio for 1.2-100.
7. method according to claim 5 before it also is included in described step b), adds described mixture and optional with 10wt% or amount still less with titanium dioxide.Except the described mixture that is used for described or pipe, if other composition of usefulness.
CN97112767A 1996-06-10 1997-06-10 Synthetic plastic paper and method for preparing the same Pending CN1169912A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20938/96 1996-06-10
KR1019960020938A KR100197891B1 (en) 1996-06-10 1996-06-10 Synthetic plastic paper and method for manufacturing the same

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Publication Number Publication Date
CN1169912A true CN1169912A (en) 1998-01-14

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CN97112767A Pending CN1169912A (en) 1996-06-10 1997-06-10 Synthetic plastic paper and method for preparing the same

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KR (1) KR100197891B1 (en)
CN (1) CN1169912A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102602003B (en) * 2012-03-16 2014-10-22 浙江绍兴华东包装有限公司 Production technology of biaxial oriented polypropylene synthetie paper
CN112123908B (en) * 2020-09-23 2022-11-04 杭州华塑实业股份有限公司 Degradable polyester synthetic paper and preparation method thereof

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KR980002140A (en) 1998-03-30
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