TW405002B - The manufacture method of bi-orientation polypropylene (BOPP) pearl synthetic paper with 25-250 mu m thickness fabricated by three layer co-extrusion way - Google Patents

Abstract

This invention relates to the manufacture method of bi-orientation polypropylene (BOPP) pearl synthetic paper with 25-250 mu m thickness fabricated by a three layer co-extrusion way, especially refers to using the three layer co-extrusion way that the polypropylene resin and the inorganic composition are extruded respectively by one set of twin-screw main extruder having a side feeding apparatus and two sets of twin-screw sub extruder having a side feeding apparatus and I are combined to flow through the same T-die to form three sheet layers of a paper-or-resin layer, a foamed intermediate layer, and a paper-or-resin layer; next, it undergoes cooling, bi-axial extension, corona treatment and is wound to form a 25-250 mu m three layer co-extrusion double-side paper face pearl synthetic paper of the paper layer/ foamed intermediate layer/ paper layer, a three layer co-extrusion single-side paper face pearl synthetic paper of the paper layer/ foamed intermediate layer/ resin layer, a three layer co-extrusion double-side super-glossy pearl synthetic paper of the resin layer/ foamed intermediate layer/ resin layer, and the coating bottom paper as the coating-class synthetic paper.

Description

Printed by the Consumers' Cooperative of the Central Provincial Bureau of Economic Affairs of the Ministry of Economic Affairs 405002 V. Description of the invention Layer), and a synthetic paper containing 8 to 55% by weight of inorganic fine powder of poly 2ene early-stretched stretch film as a surface layer has been applied for and has been used, for example, by the Japanese Prince Chemical Co., Ltd. The Japanese special prince Zhaoguo _ Shuji ^ 'Another Japanese patent kaizao 55-Zhuguan, Japanese kaikai __37, Japanese kaikai 3_S7255 filed patent applications. These manufacturing methods are based on the riding layer in the longitudinal secretion. Between the device and the horizontal extension device, the paper surface layer is completed by using two press fields as the upper and lower layer coatings. Only the second surface layer can be extended horizontally and uniaxially. Its paper strength is low and the paper surface layer. The inorganic powder added to increase the printability is easy to be powdered in the printing process, which will cause the printer to clear the paper. Also, because the paper surface layer is unidirectionally extended, the total extension ratio of the bidirectional extension process of wood and substrate layer is Difference, so when the paper is heated, the paper There is a difference in the shrinkage between the surface layer and the substrate layer, and the paper is prone to wavy deformation. In addition, in order to stabilize the process and product quality, two extruder machines are used as the upper and lower layer coatings to complete the paper surface layer process. Limited by a large limit, so the width of the finished product after extension is the largest, and the thickness of a single paper surface layer must be greater than 『〇 // (usually a guide), so the product thickness is often above ⑽, otherwise there will be uneven product thickness distribution and affect Printing processing. In general, due to the high technical difficulty of the process and the high production cost of the product, the sales volume of the product is limited, and it is not easy to promote it for various uses. F To solve the above problems, the applicant company of the present invention It adopts a three-layer structure <synthetic paper ', which is composed of a paper surface layer or a resin layer / foamed intermediate layer / paper surface layer or a resin layer, and the polypropylene resin composition of the foamed intermediate layer is provided by a t-side feeding device The double screw protects the calendar of the main extruder, and the paper surface layer or the resin layer and the resin composition are supplied by two double screw-like auxiliary extruders with side feeds. ---- Order ------ Line. ..--Γ Please ^ Notes on reading the back of the page and then fill in)

Printed by the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives printed 405002 at extruded. The other miscellaneous inspections have been passed through the same procedure-after the face is needed, it has to be a three-layer structure, which is then cooled, extended in both directions, corona treated, and sampled = It can get 25 ~ 2 Qing double-sided, single-sided paper and double-sided super-bright bead paper. The method of the present invention adopts a three-layer coexistence method, and the synthetic paper obtained by extruding each layer = co-extruded after flowing and bidirectionally extending is bonded to the bidirectionally extending intermediate layer to extend the unidirectionally extending The combination of paper surface layer = paper is different in structure and manufacturing method. At the same time, you can choose the paper surface layer using inorganic filler or the resin layer without adding inorganic filler in the auxiliary machine extrusion material to form paper surface layer / foaming intermediate layer / paper surface pearlescent I paper and paper surface layer. / Foam intermediate layer / Resin layer of single-sided paper pearlization &amp; Fleece and resin layer / Foam intermediate layer / Resin layer of double-sided super bright pearly synthetic paper and coated base paper as coating grade synthetic paper. The synthetic paper prepared by the method of the present invention has a uniaxial extension layer formed by adding a layer of film after longitudinal unidirectional extension of the paper surface layer in the process and the use of raw material formulation and conventional techniques, and before the longitudinal extension. The difference can be promoted to the use of material characteristics to replace natural paper. Its advantages can be listed as follows: 1. The raw material of the paper surface layer is mainly polypropylene, polyethylene, titanium dioxide, and inorganic powder, which has a good matte effect. And the whiteness and shading rate surpass that of traditional paper. 2. The bidirectionally stretched paper surface layer has good strength, good fixation of inorganic powder, and does not produce powdering during the printing process. 3. The paper surface layer and the resin layer have the same elongation ratio as the foamed intermediate layer. The uniform shrinkage of the paper 'is not prone to wavy deformation of the heated paper surface. In addition, the paper surface layer and the foamed intermediate layer with the same stretching ratio are not easy to delaminate. 4. The dryness range of paper surface layer and resin layer can be controlled from 1 // ~ 30 tablets by the amount of extruder of the auxiliary machine. (Depending on product thickness requirements and application requirements, the paper size is applicable to Chinese home samples (CNS> Α4 size (210X2 $ mm) {Please read the precautions on the back before filling out this page) • Packing, 11 Λ Printed by Shelley Consumer Cooperative of Central Bureau of Standards of the Ministry of Economic Affairs 405002 5. Invention Description () 5. This process has a large production speed of 'max. 3.5 mouths / hour, maximum production can be achieved, and the thickness of shame products can range from a wide range, up to 25 ~ 25.〇 #. 6. The paper surface resin layer and foamed intermediate layer are extruded from a twin-screw extruder with side feed. The raw materials are well mixed and uniform, so the range of product thickness difference can be controlled within ± 2 *. And powder inorganic powder can be used in the side feeding device into the extruder, instead of only using the inorganic powder compound granules (Jlaster Bat), which can greatly reduce the cost of raw materials; In addition, the inorganic powder can also be used. Compound pellets are produced in a single screw extruder, but the L / D (length / diameter) ratio of the extruder screw must be effectively increased to achieve uniform mixing of raw materials. 7. The production cost of pp production is low and it is more competitive in the market. The following is Make it easy to understand The technical content of the present invention is described below with respect to the polypropylene tree shrub composition and the manufacturing process (including extrusion, three-layer co-extrusion, cooling, biaxial stretching, corona treatment, coiling), etc. The extended polypropylene pearlescent synthetic paper is a three-layer structure, and the foaming intermediate layer is a twin-screw main extruder with a side feeding device. 4 The weight of the front end of the main machine is uniform, and the cake is fed with calcium carbonate powder 0 ~ 40% by weight and titanium dioxide powder 0 ~ 20% by weight. It is entered into the main extruder by one or two side feeding devices after metering. After mixing with the twin screws of the main extruder, the composition of the resin and inorganic powder is squeezed into the middle flow channel of the T-die. In addition, the paper surface layer is composed of two pairs of twin screw extruder with side feeding device. Polypropylene 20 ～ 99 5% by weight, polyethylene 〇 ～ U% by weight, antistatic agent 〇 ～ 3% by weight, antisticking agent 0.5 ～ 3% by weight, and ultraviolet absorber 〇 ～ 2% by weight from the auxiliary machine The front inlet is ⑺, stir evenly Then enter the secondary extruder, and use a good powder of carbonic acid G ~ # wt%, and the end of the dioxide of silk G ~ 2Qwt%, from II ---------- ¥ ------ 1T --- --- ΛI. (Please read the notes on the back before filling in this page) This paper size applies to China National Standards (CNS) A4 (21〇 &gt; ^ 7 mm) 5405002 A7 B7 Central Standards of the Ministry of Economic Affairs Bureau employee consumer cooperative printing, invention description ()-One or two side feeding devices. Set 'Warp-by ..' After entering the oblique extruding bridge, the extruder will mix the resin with The composition of the inorganic powder is extruded into the two channels on the two sides of the T-die. The above three extruder extrudates are combined and extruded through the same T-die to form a resin layer or paper surface layer / foamed intermediate layer / 25 ~ 250 // double-sided, single-sided pearlescent synthetic paper made of resin or paper-surfaced sheet, and biaxially stretched, corona treated, and rolled up. The method of the present invention is to produce paper suitable for culture, and uses high crystallinity polypropylene as a main raw material. The polypropylene resin used in the present invention is a homogeneous polymer with most of the melt index (hereinafter referred to as Book 1) 0.5 ~ S ASTW W23S being cis (ISOTACTIC). This polymer wheel shape allows a neat arrangement of one molecular chain. According to the molecular weight and distribution of the selected raw materials, the mechanical strength and quality uniformity of the pearlescent synthetic paper can be controlled. The structure of the pearlescent synthetic paper produced by the method of the present invention is a three-layer structure. As shown in FIG. 1, the paper surface layer can achieve the effect of imitating paper. It is combined with polyethylene and inorganic powder, and the gloss of the paper surface is controlled by the adjustment of the dosage ratio. Degree, writing fluency and printing suitability. Polyethylene uses the melting index) o ~ j ~ 7, and can be used to control the strength of the paper. The main function of the inorganic powder used in the method of the present invention is to reduce the thickness of the foamed intermediate layer (produced by the fine pores of the extension process), and it can also make the paper surface layer produce a writing fluency that is different from ordinary plastic paper and Printing suitability. The inorganic powder is one selected from the group consisting of calcium carbonate, diatomaceous earth, clay, calcium oxide, sulfate lock, dioxin, etc., or used in combination. The particle size is 0.2-κ / ^, and the amount Determined according to the physical needs of the product. The invention is made with 4 twin-screw extruder with side feed. The inorganic powder can be fed into the side feed device, and the double-screw can defend Qianda for the best mixing and dispersion effect. In addition, inorganic powder and resin can also be used. It is made by scouring (please read the precautions on the back before filling in this page). Packing and ordering another 7 mm) Printed by the Central Samples Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperative Co., Ltd. 405002 at V. # 明说 ^ 一&quot; '): ~ ~ · The compound pellets are mixed with various resins at the foremost inlet and then enter the extruder ^. The titanium dioxide powder used in the present invention mainly adjusts the opacity and whiteness of the product and resists ultraviolet rays. . The antistatic agent used in the method of the present invention can be any antistatic agent commonly used in current biaxially stretched polypropylene (BOJ> P). The main one is a tertiary amine. Eliminates static effects due to processing friction. In the production of the method of the present invention, in order to prevent the paper surfaces from sticking to each other when the synthetic paper is taken up, an anti-adhesive agent needs to be added. The current common biaxially-stretched polypropylene can be used, for example, SIU: CA, clay. (C: Lay), methyl methacrylate (PΛΜΑ), glass beads (GLASS ΒΕΑί)) and the like. The specific gravity range of the polypropylene fluorescein pearlescent synthetic paper product prepared by the method of the present invention is less than 0.75, which can be adjusted by changing the composition formula, which is lower than that of the Japanese Patent Application No. 3-S7255 No. 79, so that Consumers can have more area under the same unit weight, which is more economical in use. The bidirectionally-extended polypropylene pearlescent synthetic paper prepared by the method of the present invention has a three-layer structure of a paper-making surface layer / foaming intermediate layer / paper surface layer or a resin layer, and the product physical properties, production capacity, and use formula, equipment, and operation are also inseparable. relationship. Generally, bidirectionally stretched products of polypropylene film are mostly transparent products without filler. However, the paper-like production process of the present invention needs to add a large amount of inorganic fillers, so that the productivity, capacity and product quality stability of the two-way extension process are greatly tested. The following describes the manufacturing process of 25 to 250 polypropylene pearlescent synthetic papers produced by the method of the present invention with single- and double-sided paper-based products, together with the devices and steps of the drawings, as follows: ΐ 1. Extruder device (Figure 2 of ⑴): Includes a double screw with side feeding device and a 'main extruder' and a double screw-like auxiliary extruder with side feeding device. This paper is suitable for towel country @ 家 鲜 (CNS) Α4Λ4Μ 2H) X2g7 · ^ ali) -H ΙΊ s (J LI I n 1 1 ^-1 f Jing first read the precautions on the back before filling in this page) Year 405002 B7 V. Description of the invention () The temperature setting conditions are subject to the resin Material mix, sleeve Γ 乂 乂 ((Please read the precautions on the back before filling out this page) The viscosity viscosity of the product varies depending on the production line speed and product thickness, but it is usually set at W0 ° C ~ 28 〇It is within range. Below ieoti, there will be poor resinization and the τ die cannot be extruded smoothly, while above 2 ^ it has resin over-gelling and cracking and cannot be produced. The method of the present invention is achieved by using three-layer co-extrusion method for the layer (paper surface layer or resin layer / foamed intermediate layer / paper surface layer or resin layer), which is designed using the &amp; The stream is co-extruded from a τ die through three layers. Μ 2. Cooling molding wheel device (Picture 2⑵): Water-cooled or air-cooled cooling device can be used. The molten extrudate is co-extruded through three layers of high temperature wo ~ beole to cool and shape. Whether the cooling temperature control of this process is appropriate is of great relevance to the smoothness of the subsequent process steps. The cooling temperature is usually set between Η and ，, depending on the thickness of the synthetic cardboard sheet and the production line speed, which can be adjusted appropriately in this model park. 3. Longitudinal extension device (Fig. 2 (CD)): The cold-formed cardboard is fed into this device, and it is preheated at us ~: ^ 50 (depending on the thickness of the cardboard and the production line speed). The cardboard is softened, and the two sections are extended at low speed and high speed to give the mechanical strength of the synthetic paper in the longitudinal direction, and then tempered, and the longitudinal extension ratio is usually set to 3 to 6 times. Work of the Central Standards Bureau of the Ministry of Economic Affairs and printing of consumer cooperatives 4. Horizontal extension device (Figure 2 ⑷): The thinner cardboard processed by the longitudinal extension above is first ~ J55 »C (depending on the thickness of the cardboard and production line speed) It is preheated and softened, and then this horizontal extension is performed. Finally, it is tempered to form a shape, and pearlescent synthetic paper is partially retracted to increase dimensional stability. Usually, the lateral extension ratio is set to 5 times, which can be determined according to the characteristics of the product. 05. Corona treatment device (Figure 2 ⑸): This treatment is to make the polypropylene bead synthetic paper can improve the physical properties of the paper surface, so that Can be suitable for printing, coating, and paper-making financial transfer; ^ (CNS) A4 threat (plus χ2 reading) ----- 405002

Fifth, the description of the invention (), different processing, processing power is 20 ~! 20KW high frequency discharge device: (adjusted according to the production line speed) Corona treatment to make the surface wet tension to 36 ~ 48 cfyne / cm. 6. Winding device (Picture 2 in Figure 2): It uses an iron pipe to roll the pearlescent synthetic paper produced above into a wide width finished product, which can then be slit, sliced and packed into 25 as required. ~ Rolled, hey piece film. The thickness of 25 ~ 2 shape bidirectional extension made by the method of the present invention \ loading ^ pearlescent synthetic paper, the three-layer thickness ratio is as follows: Please read the notes on the back and fill in this Page) • Binding · Binding Printed paper of the Ministry of Economic Affairs Central Standards Bureau Bureau Consumers Cooperative Cooperative Newcastle A7 B7 405002 Description of the invention (25 μ 50 μ 100 μ 150 μ 200 μ 250 μ Paper surface layer or tree layer 1-3 1 ～ JOJM 1 ～ 2〇μ &quot; λ ～ 30 〇 5 ～ 30 only 10- ^ 30 μ Middle layer 23 ～ 19 μ 48-30 Μ 9Q ～ 60 μ 146 ～ 90 μ 190 ～ 140 μ 230 ～ 190 μ Paper surface layer or wax layer 1 ~ 3 pieces 1 —Work 〇 &lt; 1 ～ 2〇 2 2 ～ 30 / &lt; 5 ～ The thickness of the paper surface layer and resin layer can be adjusted between 1 ~ gusset, according to product requirements In order to clarify the technical content of the present invention, a polypropylene raw material system is used to produce 25 to various characteristics and uses of pearl photosynthesis through this two-way extension process. The following examples are used to illustrate the synthetic paper produced by the method of the present invention for writing, printing, packaging and a wide range of papers. However, this is not intended to limit the scope of the invention patent. Example 1: (thickness 25 ° #The following single-sided paper-surface pearlescent synthetic paper is attached with samples 1, 2, and 3) 67% by weight of polypropylene (WFI: 2.4) and 3% by weight of antistatic agent. After mixing, enter the side feeding device from the inlet. The twin-screw main extruder will measure the weight percent of calcium carbonate powder and the weight percent of titanium dioxide M by the metering machine, and then enter the twin-screw main extruder through two side feeding devices. Polypropylene (WFI ·· 5) 52% by weight, polyethylene (workers: 12% by weight, 2% by weight antistatic agent, 3% by weight anti-adhesive agent, and 1% by weight UV absorber) The twin-screw # 1 auxiliary extruder will measure the weight percent of calcium carbonate powder and 10% by weight of dioxin by a metering machine and enter the twin-screw # 2 auxiliary extruder through two side feeding devices. The polypropylene ( WFI: 2 · 4) 57% by weight secondary anti-adhesive 3% by weight mixed After the machine is mixed, it enters the twin-screw # 2 auxiliary extruder with side feed. At the temperature of the extruder 200 ~ 280 °, it is applied in three layers. N §: County (CNS) A4 (2 deities) --- „---.----- install-- (Please read the precautions on the back before filling this page)

1T a Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 405002

The co-extrusion method is extruded through a τ-type die head, and the polypropylene-ene pearlized synthetic cardboard is cooled and formed under the temperature range of i5 * c by a cooling wheel to form a "later cardboard into a longitudinal stretching device. The temperature is set at J20 ~ I50ti First, preheat it, then make 5 times longitudinal extension, and then temper it after extension. After cooling, enter the transverse extension device. At a temperature setting of 250 ~ 2S5ti, first preheat it, and then make 9 times lateral extension and extension. After tempering and cooling, to control the shrinkage of synthetic paper. After exiting the transverse stretching device, corona treatment is performed to make the synthetic paper have good printing processability, and finally it is wound by a winder. In the above manner It can make less than 250 single-sided paper-surface pearlescent synthetic papers, which can be widely used in book nests, printing, packaging and various paper applications. The thickness of 50 pieces (such as attached sample 1), 100 ; Ί (if attached sample two) ,: i2〇 / Z (if attached sample two), the properties of the pearlescent synthetic paper on the morning paper are shown in the following table. —----.----- ^ —— (please first (Please read the notes on the back and fill in this page.) Sousha Ink Seal Project '^ Single Combination \ 60 μ 100 μ 120 μ Test Method Specific Gravity — 0. 70 0. 70 0.70 ASTM D-1248 Basis Weight sr / πί 42.0 70.0 84.0 JIS P-8124 Gloss% 25/110 26/110 25/111 TAPPI T-480 Whiteness% 97 97 97 TAPPI T-525 Opacity% 85 92 94 TAPPI T-425 Roughness M 0.70 0.70 0.70 TAPPI T-555 Surface Impedance JX 12 10 12 '10 12 10 EN 45014 Example 1 (Below thickness, double-sided paper-faced pearlescent synthetic paper, such as attached samples 4, 5 and 6) Order Λ This paper size is applicable to China National Standard (CNS) A4 specification (centimeter) 405002

Printed by the Male Standards Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. Ⅴ. Description of the invention () After mixing poly (ene ······ 4) saki and antistatic _2% by weight, it is fed into the side feed from the inlet. The twin-screw main extruder of the feeding device will enter the twin-screw main extruder by measuring the weight percent of carbonic acid and the weight percent of the dioxide ribs from the two side feeding devices respectively. In addition, ene (group ·· 5) 58% by weight, polyethylene (rat ·!)% By weight, static agent 2% by weight, anti-adhesive 3% by weight, and ultraviolet absorber% are mixed by a mixer, and then fed through the inlets respectively. Entered into the two twin screw extruder of #J, # 2 with side feeding, and measured the calcium carbonate powder u% by weight and the amount of dioxide “1:% by weight” by the metering machine, and then used the two side feeders. The feeding devices enter the # 1 and # 2 twin-screw vice extruders respectively. It is extruded through a D-die in a three-layer co-extrusion method at an extruder temperature of 200 ~ 2so * C, and the polypropylene pearlized synthetic cardboard is cooled and formed by a cooling wheel at a temperature range of 25 ~ 60. The formed cardboard enters the longitudinal stretching device, and is preheated at a temperature set at J20 ~: i50 ° C, and then longitudinally stretched 4.5 times, and then tempered and cooled after stretching. After cooling, it enters the horizontal stretching device. At the setting helmet degree: ί55 ~ i90 ° C, it is preheated first, and then stretched by 8.5 times horizontally. After stretching, it is tempered and cooled to control the shrinkage of synthetic paper. rate. After the horizontal stretching device is taken out, it is further subjected to a corona treatment, so that the synthetic paper has good printing processability. Finally, it is taken up by a gripper. In the above manner, the following two-sided paper-faced pearly synthetic paper can be obtained, which can be widely used in book nests, printing, packaging and various paper applications. The double-sided paper pearl synthetic paper with a thickness of 60 # (such as attached sample 4), (such as attached sample 5), and i50 / i (such as attached sample 6) prepared in this embodiment. The physical properties are shown below. This paper size applies Chinese National Standard (CNS) Α4 specification (2 丨 〇 &129; ^^^) (Please read the precautions on the back before filling this page) Pack-.tT. Λ: / 405002 A7 B7 Wufahu Description (Item a \ ^ Category 6〇μ 100 μ 150 μ Test Method Specific Gravity — 0.70 0.70 0.70 ASTM D-1248 Basis Weight g / m 42.0 57.0 81.0 JIS P-8124 Gloss% 26/25 26/26 27/26 TAPP Industrial T-480 Whiteness% 97 97 97 TAPPI T-525 Opacity% 89 94 96 TAPPI T-425 Roughness μ 0.70 0. 70 0.70 TAPPI T-555 Surface impedance il 12 10 12 10 12 10 EN 45014 Example 2 ： (The thickness of the double-sided paper pearlescent synthetic paper below the thickness, such as attached samples 7, 8, and 9) (Please read the precautions on the back before filling in this page) Pack. &Lt; 1Τ 济济 部 中 夫 样 率 局 ίβτ-χ. Consumption Cooperative Technology India printed 52% by weight of polypropylene (ΛPI ·· 2 · 4) and 3% by weight of antistatic agent, mixed it with a mixer, and entered the twin-screw main extruder with a side-feeding device from the inlet, The calcium carbonate powder M% by weight and titanium dioxide weight% are measured by a metering machine, and then fed by two side feeding devices, respectively. The screw is mainly extruded. In addition, polypropylene (WPI: 3.0)% by weight, antistatic agent 2% by weight, and anti-adhesive 2% by weight are mixed by the mixer, and then enter the double-screw sample with side feed # 1, # In the two pairs of extruder, and extruded through the die-type die in a three-layer co-extrusion method at an extruder temperature of 2000 ~ 280 ° t and c, the cooling wheel is fixed at i5 ~ 60 ° C temperature range, and The polypropylene spider pearl synthetic paperboard is cooled and formed. The formed paperboard is extended longitudinally, and then it is tempered and cooled. After cooling, it is put into stand and used by China National Kneading Standard (CNS) A4% # · (21〇K29 | including 螫) , Poison: ^ ';: · 405002

V. Description of the invention () After entering the horizontal court, give the post first, and then make a five-fold longitudinal extension, and then extend it to the flames. After cooling, it enters the direction detection extension device. Under the temperature setting i50 ～ ig5 &lt; &c;, it is pre-stretched and then 9 times of horizontal extension, and then tempered and cooled after extension to control the shrinkage rate of synthetic paper. . After exiting the transverse extension device, it is subjected to corona treatment, so that the synthetic paper has good printing processability, and finally it is taken up by a winder. The above method can produce less than 250 double-sided paper-faced pearly synthetic paper, which can be widely used for writing, printing, packaging and various paper applications. The double-sided super-bright pearlescent synthetic paper with a thickness of 70 // (such as attached sample 7), (such as attached sample 8), (such as attached sample 9) prepared in this embodiment, the physical properties are shown in the following table. (Please read the notes on the back before filling this page)

, 1T Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs

This paper size is applicable to China National Standards (CNS) Λ4 specifications (漦 J printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 405002 B7 V. Description of the invention () Item category combination \ το μ 110 μ 140 μ 0.70 0.70 0.65 ASTM D-1248 basis weight g / m 49.0 77.0 91.0 JIS P-8124 gloss% 110/111 112/110 109/110 TAPPI T-480 whiteness% 85 87 89 TAPP opacity% 85 92 94 TAPPI T-425 Roughness μ 0.5 0.5 0.5 TAPP T-555 Surface Impedance sx 12 10 12 10 12 10 EN 45014 »· * Binding ^,-· '. (Please read the precautions on the back before filling this page ) This paper size is applicable to China National Standards (CNS) Λ4 specification (21〇X_297j ^ t) ⑴ paper surface layer / foamed intermediate layer / paper-making structure; 'surface layer of double-sided paper Xi'an paper surface layer / foamed intermediate layer / Resin layer with single-sided paper-side paper structure; (3) Resin layer / foamed middle layer / resin layer with double-sided super-bright-faced synthetic paper structure. 405002 V. Description of the invention (Figure 1: Three-layer co-pulsation and double-pumping Three kinds of three-layer structure drawing of extended light-synthetic synthetic paper: (_) 25 ~ 25〇a pearl pearl HeZhuZhuGuangHe Figure 2: Manufacturing equipment diagram of the present invention; Extruder device; (2) Cooling forming wheel device; ⑶ Longitudinal extension device; ⑷ Lateral extension device; ⑸Corona treatment device; (6) Winding device. (Please read the notes on the back before filling out this page) The paper printed by the Employees' Cooperatives of the China Standards Bureau of the Ministry of Economic Affairs is compliant with the Chinese National Standard (CNS) A4 specification (2 丨 OX297 mm)

Claims (1)

A8 B8 C8 D8 405002 VI. Scope of patent application --------- ---------- 绛-(Please read the notes on the back before filling this page) The central standard of the Ministry of Economic Affairs Bureau's Consumer Cooperative Cooperative Printing Co., Ltd. is a three-layer co-extruded biaxially stretched polypropylene pearlescent synthetic paper manufacturing method, which is characterized by the high crystalline polypropylene resin ((ΛΙίΤ ···· 5) ~ S) 39 ~ 95% by weight and calcium carbonate powder 0 ~ 4 (3% by weight, titanium dioxide 0 ~ 20% by weight, antistatic agent 1 ~ 5% by weight, polypropylene resin composition and polypropylene 22 ~ Outer · 5% by weight, polyethylene resin 0 ~ 12% by weight, titanium dioxide powder 〇 ~ 20% by weight, calcium carbonate powder 0 ~% by weight, antistatic agent 0 ~ 3% by weight, antisticking agent 0.5 ~ 3% by weight %, UV absorber 0 ~ 2% by weight, the resin composition is respectively fed by a double screw with a side feeding device to defend the main extruder and two double screw-like auxiliary extruder with a side feeding device. The feeding method of the feeding port and the feeding of the side feeding device are extruded in the extruder JS0 ~ 2S0C, and are converged to be extruded through the same T die. Then, the pearlized synthetic paperboard sheet was cooled and formed by cooling through a b ~ 60 ° C cooling wheel, and then the sheet was biaxially stretched before U5 ~ &gt;! 50. (3 preheating and extension 、 Tempering longitudinal stretching of 3 ~ 6 stretching magnification, and then feeding it into the horizontal stretching of 5 ~ I2 times stretching magnification for preheating, stretching, and tempering at 14 () ~ 35 ° C, and then ~ High-frequency corona treatment under kw power, and then coiled by a winder to form a paper surface layer / foamed intermediate layer / paper surface layer with a thickness of 25 ~ 25 //, paper surface layer / foamed intermediate layer / resin layer, resin Layer / foamed intermediate layer / resin layer and three three-layer co-extruded polypropylene pearlescent synthetic paper and coated base paper as coated grade synthetic paper. This paper standard applies to China National Standards (CNS) A4 specifications ( 210X297 mm) K