CN1846984A - Five layer co-extruding biaxial stretched synthetic PP paper and its prepn process - Google Patents
Five layer co-extruding biaxial stretched synthetic PP paper and its prepn process Download PDFInfo
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Abstract
The present invention relates to five layer co-extruded biaxial stretched synthetic PP paper and features the five layer co-extruded superposed composite film structure comprising the first or upper layer of high bright resin or white extinction material, the second layer of organic foamed material, the third layer of inorganic foamed material, the fourth layer of organic foamed material and the fifth layer of high bright resin. The preparation process includes separately extruding the fiver layers of material, and superposing with the same mold head to form the five layer composite film structure. The five layer co-extruded biaxial stretched synthetic PP paper features low density, high stiffness, fine and smooth surface, high whiteness, high surface tension maintenance, etc.
Description
Technical field:
The present invention relates to a kind of five layer co-extruding biaxial stretched synthetic PP paper.Be specifically related to prescription of five layer co-extruding biaxial stretched synthetic PP paper and preparation method thereof.Belong to the synthetic paper material technical field.
Background technology:
Synthetic paper is a kind of plastics new material product, and it has the characteristic of plastics and paper simultaneously.Synthetic paper had both kept outside the outward appearance, whiteness, deflection, opacity, writing property of printing of natural plant fibre paper, had the high strength of polyolefin plastics film, good characteristic such as acidproof, alkaline-resisting, anti-pollution again.PP synthetic paper main component is a polypropylene plastic, renewable repeated use, but and completing combustion, can not influence service life of incinerator, more can not produce poisonous gas, avoid causing the secondary public hazards, meet modern environmental protection requirement.
The development of synthetic paper has had nearly 40 years history abroad, but because the production technology difficulty is bigger, at present enterprise that in the world can mass production is few, the E.I.Du Pont Company, the Kimberly-Clark company that have only the U.S., the prince company of Japan and several companies such as Nan Ya Plastics company of Taiwan can produce in batches.Market demands synthetic paper when the PP synthetic paper uses: have that density is low, stiffness requirement is high, surface requirements finer and smoother smooth, whiteness is high, surface tension keeps wanting characteristics such as height.
The Nan Ya Plastics company of Taiwan has developed five layer co-extruding biaxial stretched synthetic PP paper in the market, and has applied for patent.Five laminated one-tenth Hard copy bodies all have advantage than three layers of synthetic paper on properties of product and production cost, especially utilize two subgrades as the excessive layer of intensity of having strengthened between each layer (intensity between the three-decker layer is relatively poor, peels off easily).Can also cushion the influence (in order to reduce density, foaming layer pursue foaming number more many more big, but foaming layer foaming number more many more big exquisiteness and optical properties to surface influential) of the foaming of sandwich layer by the situation of control subgrade foaming layer to surface quality.But because its subgrade foaming layer all is to adopt inorganic foaming agent (calcium carbonate class), and inorganic foaming agent and polypropylene compatible differ bigger, and be bigger to the deflection decline influence of synthetic paper.
Summary of the invention:
A kind of density is low, deflection is high in order to provide for purpose of the present invention, surface requirements finer and smoother smooth, whiteness is high, surface tension keep to be wanted high five layer co-extruding biaxial stretched synthetic PP paper and preparation method thereof.
The object of the present invention is achieved like this: a kind of five layer co-extruding biaxial stretched synthetic PP paper, it is characterized in that it is the five-layer co-squeezing structure of composite membrane thing that goes out to superpose, have two kinds of material forms: a kind of is two-sided bright five layer co-extruding biaxial stretched synthetic PP paper, another kind is the white delustring five layer co-extruding biaxial stretched synthetic PP paper of one side light one side
Described two-sided bright five layer co-extruding biaxial stretched synthetic PP paper, the superiors' (A layer) and orlop (E layer) they are high bright resin bed, and the second layer (B layer) and the 4th layer (D layer) they are organic foaming layer, and the 3rd layer (C layer) is inorganic foamed layer;
The white delustring five layer co-extruding biaxial stretched synthetic PP paper of described one side light one side, the superiors' (A layer) are white delustring layer, the second layer (B layer) and the 4th layer (D layer) are organic foaming layer, and the 3rd layer (C layer) is inorganic foamed layer, and orlop (E layer) is high bright resin bed.
For two-sided bright five layer co-extruding biaxial stretched synthetic PP paper, its five layers of composition of raw materials are:
The superiors' (A layer) and orlop (E layer) are high bright resin bed, are made up of the raw material of following weight portion: acrylic resin 60 ~ 99, antiblocking agent masterbatch 1-3, slipping agent masterbatch 0-10, EMMA masterbatch 0-5, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5, antioxidant masterbatch 0-2; The second layer (B layer) and the 4th layer (D layer) are organic foaming layer, are made up of the raw material of following weight portion: acrylic resin 60 ~ 99, PBT masterbatch 5 ~ 40, slipping agent masterbatch 0-10, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5, antioxidant masterbatch 0-2, fluorescent brightening masterbatch 2-10; The 3rd layer (C layer) is inorganic foamed layer, is made up of the raw material of following weight portion: isotacticity 95% above acrylic resin 60 ~ 90, calcium carbonate masterbatch 5 ~ 30 and titanium dioxide masterbatch 5-20, antioxidant masterbatch 0-2, fluorescent brightening masterbatch 0-10.
For the white delustring Dampler Ace of one side light one side, its five layers of composition of raw materials are: the superiors' (A layer) are white delustring layer, are made up of the raw material of following weight portion: acrylic resin 60 ~ 99, polyethylene 20 ~ 40, antiblocking agent masterbatch 1-3, slipping agent masterbatch 0-10, EMMA masterbatch 0-5, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5, antioxidant masterbatch 0-2; The second layer (B layer) and the 4th layer (D layer) are organic foaming layer, are made up of the raw material of following weight portion: acrylic resin 60 ~ 99, PBT masterbatch 5 ~ 40, slipping agent masterbatch 0-10, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5, antioxidant masterbatch 0-2, fluorescent brightening masterbatch 2-10; The 3rd layer (C layer) is inorganic foamed layer, is made up of the raw material of following weight portion: isotacticity 95% above acrylic resin 60 ~ 90, calcium carbonate masterbatch 5 ~ 30 and titanium dioxide masterbatch 5-20, antioxidant masterbatch 0-2, fluorescent brightening masterbatch 0-10; Orlop (E layer) is high bright resin bed, is made up of the raw material of following weight portion: acrylic resin 60 ~ 99, antiblocking agent masterbatch 1-3, slipping agent masterbatch 0-10, EMMA masterbatch 0-5, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5, antioxidant masterbatch 0-2.
Five layer co-extruding biaxial stretched synthetic PP paper of the present invention, wherein paper is respectively white delustring face and transparent optical face, for printing, coat design, provides high capillary fine and smooth delustring face or high finish surface.Wherein, organic foaming layer is the density that is used for reducing the PP synthetic paper, keeps the deflection of PP synthetic paper.Foaming layer mainly is to reduce density, and opacity and whiteness are provided.
The preparation method of five layer co-extruding biaxial stretched synthetic PP paper of the present invention, it is characterized in that it is the five-layer co-squeezing structure of composite membrane thing that goes out to superpose, five layer materials are extruded by five extruders respectively, and through five layers of structure of composite membrane of same mould stack coextrusion one-shot forming, its concrete preparation method is as follows:
Step 1, raw material and masterbatch are carried out drying
Calcium carbonate masterbatch, titanium dioxide masterbatch, PBT masterbatch, acrylic resin, polyethylene, EMMA masterbatch are handled 40-120 ℃ of drying of carrying out 1-7 hour
Step 2, five-layer co-squeezing are gone into same die head
1.1, the superiors' (A layer) are high bright resin bed or white delustring layer, after material resin and various masterbatch additive evenly stirred in extruder front end mixed-hopper, respectively by a single screw extrusion machine, under 140-270 ℃,, clamp-on in the runner of the superiors' (A layer) of die head the resin fusion plastification;
1.2, the second layer (B layer) and the 4th layer (D layer) be organic foaming layer, after material resin and various masterbatch additive evenly stirred in extruder front end mixed-hopper, after in extruder front end mixed-hopper, evenly stirring, respectively by a single screw extrusion machine, under 140-270 ℃,, clamp-on respectively in the runner of the second layer (B layer) of die head and the 4th layer (D layer) the resin fusion plastification;
1.3, the 3rd layer (C layer) be inorganic foamed layer, after material resin and various masterbatch additive evenly stirred in extruder front end mixed-hopper, by two series connection extruders, under 140-280 ℃,, clamp-on in the 3rd layer the runner of same die head the resin fusion plastification;
1.4, orlop (E layer) is high bright resin bed, after material resin and various masterbatch additive evenly stirred in extruder front end mixed-hopper, by a single screw extrusion machine, under 140-270 ℃,, clamp-on in the runner of orlop (E layer) of die head the resin fusion plastification.
Step 3, same die head five-layer co-squeezing go out
With the five-layer co-squeezing product that step 1 obtains, extrude in the five-layer co-squeezing mode at 180 ~ 260 ℃ through same die head, make it to become the five stacked molten extrudates that add;
Step 4, cooling forming
Will be through the five stacked molten extrudates that add of same die head co-extrusion modling, by 15-40 ℃ of sharp cooling roll cooling forming film forming plate,
Step 5, biaxial tension get the lamina membranacea sheet with step 4 and send into design temperature earlier in 115-150 ℃ longitudinal tensile fixture, make the longitudinal stretching of 4-6 times of stretching ratio of preheating, extension, typing; Send into again and temperature is set in 150-160 ℃ cross directional stretch device, make the cross directional stretch of 8-11 times of stretching ratio of preheating, stretching, typing;
Step 6, will carry out sided corona treatment with the high frequency electric discharge device under the 20-80W power through the synthetic paper of biaxial tension, again with the winder rolling.
Five layer co-extruding biaxial stretched synthetic PP paper of the present invention, two subgrades adopt organic foaming agent (PBT) replacement inorganic foaming agent (calcium carbonate class) to reduce density maintenance deflection, and sandwich layer reduces density with inorganic foaming agent.It is relatively good again that the density of PP synthetic paper can relatively be hanged down deflection like this; The present invention utilizes EMMA and polypropylene compatible good, itself is exactly polar material, helps surface tension and keeps higher.
Therefore, the present invention has characteristics such as density is low, deflection is high, exquisiteness is smooth, whiteness is high for surface ratio, surface tension maintenance height.
The preparation method of five layer co-extruding biaxial stretched synthetic PP paper of the present invention, technological process is excellent, is fit to automated production, and efficient stable is saved cost.
The specific embodiment:
Below two the example for the preparation five layer co-extruding biaxial stretched Dampler Ace.Five layer materials are extruded by five extruders respectively, add compound synthetic paper through same die head stack coextrusion one-shot forming five is stacked.
Embodiment 1:
The two bright five layer co-extruding biaxial stretched synthetic PP papers of preparation
Step 1, raw material and masterbatch are carried out drying
Calcium carbonate masterbatch, titanium dioxide masterbatch, PBT masterbatch, acrylic resin, EMMA masterbatch are handled in the drying that the 40-120 degree carried out 1-7 hour
Step 2, five-layer co-squeezing are gone into same die head
2.1, the superiors' (A layer) and orlop (E layer) be high bright resin bed, form by the raw material of following weight portion: acrylic resin 90, antiblocking agent masterbatch 3, slipping agent masterbatch 2, EMMA masterbatch 2, calcium carbonate masterbatch 1, titanium dioxide masterbatch 1, antioxidant masterbatch 1.After in extruder front end mixed-hopper, evenly stirring,, under 140-270 ℃,, clamp-on respectively in the runner of the superiors' (A layer) of die head and orlop (E layer) the resin fusion plastification respectively by a single screw extrusion machine;
2.2, the second layer (B layer) and the 4th layer (D layer) be organic foaming layer, form by the raw material of following weight portion: acrylic resin 83, PBT masterbatch 8, slipping agent masterbatch 2, titanium dioxide masterbatch 2, antioxidant 1 masterbatch, fluorescent brightening masterbatch 4.After in extruder front end mixed-hopper, evenly stirring,, under 140-270 ℃,, clamp-on respectively in the runner of the second layer (B layer) of die head and the 4th layer (D layer) the resin fusion plastification respectively by a single screw extrusion machine;
2.3, the 3rd layer (C layer) be inorganic foamed layer, raw material by following weight portion is formed: acrylic resin 80, calcium carbonate masterbatch 13, titanium dioxide masterbatch 4, antioxidant masterbatch 1, fluorescent brightening masterbatch 2, after in extruder front end mixed-hopper, evenly stirring, by two series connection extruders, under 140-280 ℃,, clamp-on in the 3rd layer the runner of same die head the resin fusion plastification;
Step 3, same die head five-layer co-squeezing go out
With the five-layer co-squeezing product that step 1 obtains, extrude in the five-layer co-squeezing mode at 180 ~ 260 ℃ through same die head, make it to become the five stacked molten extrudates that add;
Step 4, cooling forming
Will be through the five stacked molten extrudates that add of same die head co-extrusion modling, by 15-40 ℃ of sharp cooling roll cooling forming film forming plate,
Step 5, biaxial tension get the lamina membranacea sheet with step 4 and send into design temperature earlier in 115-150 ℃ longitudinal tensile fixture, make the longitudinal stretching of 4-6 times of stretching ratio of preheating, extension, typing; Send into again and temperature is set in 150-160 ℃ cross directional stretch device, make the cross directional stretch of 8-11 times of stretching ratio of preheating, stretching, typing;
Step 6, will carry out sided corona treatment with the high frequency electric discharge device under the 20-80W power through the synthetic paper of biaxial tension, again with the winder rolling.
Embodiment 2:
The white delustring five layer co-extruding biaxial stretched synthetic PP paper of preparation one side light one side
Step 1, raw material and masterbatch are carried out drying
Calcium carbonate masterbatch, titanium dioxide masterbatch, PBT masterbatch, acrylic resin, polyethylene, EMMA masterbatch are handled 40-120 ℃ of drying of carrying out 1-7 hour
Step 2, five-layer co-squeezing are gone into same die head
2.1, the white delustring layer of the superiors' (A layer), form by the raw material of following weight portion: acrylic resin 50, polyethylene 40, antiblocking agent masterbatch 3, slipping agent masterbatch 2, EMMA masterbatch 2, calcium carbonate masterbatch 1, titanium dioxide masterbatch 1, antioxidant masterbatch 1.After in extruder front end mixed-hopper, evenly stirring,, under 140-270 ℃,, clamp-on in the runner of the superiors' (A layer) of die head the resin fusion plastification by a single screw extrusion machine;
2.2, the second layer (B layer) and the 4th layer (D layer) be organic foaming layer, form by the raw material of following weight portion: acrylic resin 83, PBT masterbatch 8, slipping agent masterbatch 2, titanium dioxide masterbatch 2, antioxidant masterbatch 1, fluorescent brightening masterbatch 4.After in extruder front end mixed-hopper, evenly stirring,, under 140-270 ℃,, clamp-on respectively in the runner of the second layer (B layer) of die head and the 4th layer (D layer) the resin fusion plastification respectively by a single screw extrusion machine;
2.3, the 3rd layer (C layer) be inorganic foamed layer, raw material by following weight portion is formed: acrylic resin 80, calcium carbonate masterbatch 13, titanium dioxide masterbatch 4, antioxidant masterbatch 1, fluorescent brightening masterbatch 2, after in extruder front end mixed-hopper, evenly stirring, by two series connection extruders, under 140-280 ℃,, clamp-on in the 3rd layer the runner of same die head the resin fusion plastification;
2.4, the high bright resin bed of orlop (E layer), form by the raw material of following weight portion: acrylic resin 90, antiblocking agent masterbatch 3, slipping agent masterbatch 2, EMMA masterbatch 2, calcium carbonate masterbatch 1, titanium dioxide masterbatch 1, antioxidant masterbatch 1.After in extruder front end mixed-hopper, evenly stirring,, under 140-270 ℃,, clamp-on in the runner of orlop (E layer) of die head the resin fusion plastification by a single screw extrusion machine.
Step 3, same die head five-layer co-squeezing go out
With the five-layer co-squeezing product that step 1 obtains, extrude in the five-layer co-squeezing mode at 180 ~ 260 ℃ through same die head, make it to become the five stacked molten extrudates that add;
Step 4, cooling forming
Will be through the five stacked molten extrudates that add of same die head co-extrusion modling, by 15 ~ 40 ℃ of sharp cooling roll cooling forming film forming plates,
Step 5, biaxial tension get the lamina membranacea sheet with step 4 and send into design temperature earlier in 115 ~ 150 ℃ longitudinal tensile fixture, make the longitudinal stretching of 4 ~ 6 times of stretching ratios of preheating, extension, typing; Send into again and temperature is set in 150 ~ 160 ℃ cross directional stretch device, make the cross directional stretch of 8 ~ 11 times of stretching ratios of preheating, stretching, typing;
Step 6, will carry out sided corona treatment with the high frequency electric discharge device under 20 ~ 80W power through the synthetic paper of biaxial tension, again with the winder rolling.
More than in each example, antiblocking agent, antistatic additive, antioxidant, slipping agent are meant antiblocking agent, antistatic additive, antioxidant, the slipping agent that the synthetic paper industry is commonly used.
Claims (3)
1, a kind of five layer co-extruding biaxial stretched synthetic PP paper, it is characterized in that it is the five-layer co-squeezing structure of composite membrane thing that goes out to superpose, wherein, the superiors' (A layer) are high bright resin bed or white delustring layer, the second layer (B layer) is organic foaming layer, and the 3rd layer (C layer) is inorganic foamed layer, and the 4th layer (D layer) is organic foaming layer, orlop (E layer) is high bright resin bed
1.1, the described the superiors (A layer) are high bright resin bed, raw material by following weight portion is formed: acrylic resin 60 ~ 99, polyethylene 20-40 and antiblocking agent masterbatch 1-3, slipping agent masterbatch 0-10, EMMA masterbatch 0-5, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5, antioxidant masterbatch 0-2, or the described the superiors (A layer) are white delustring layer, are made up of the raw material of following weight portion: acrylic resin 60-99, polyethylene 20-40, antiblocking agent masterbatch 1-3, slipping agent masterbatch 0-10, EMMA masterbatch 0-5, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5 and antioxidant masterbatch 0-2;
1.2, the second layer (B layer) and the 4th layer (D layer) be organic foaming layer, form by the raw material of following weight portion: acrylic resin 60-99, PBT masterbatch 5-40, slipping agent masterbatch 0-10, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5, antioxidant masterbatch 0-2, fluorescent brightening masterbatch 2-10;
1.3, the 3rd layer (C layer) be inorganic foamed layer, form by the raw material of following weight portion: isotacticity 95% above acrylic resin 60-90, calcium carbonate masterbatch 5-30, white master material 5-20, antioxidant masterbatch 0-2, fluorescent brightening masterbatch 0-10;
1.4, described orlop (E layer) is high bright resin bed, form by the raw material of following weight portion: acrylic resin 60-99, polyethylene 20-40 and antiblocking agent masterbatch 1-3, slipping agent masterbatch 0-10, EMMA masterbatch 0-5, calcium carbonate masterbatch 0-10, titanium dioxide masterbatch 0-5, antioxidant masterbatch 0-2.
2, five layer co-extruding biaxial stretched synthetic PP paper as claimed in claim 1 is characterized in that: calcium carbonate, titanium dioxide, particle diameter was 0.02-10um when PBT made masterbatch.
3, a kind of preparation method of five layer co-extruding biaxial stretched synthetic PP paper of claim 1, it is characterized in that: it is the five stacked structure of composite membrane things that add through five layer co-extruding biaxial stretched technology moulding, five layer materials are extruded by five extruders respectively, through five layers of structure of composite membrane of same die head stack coextrusion one-shot forming, its concrete preparation method is as follows again:
Step 1, raw material and masterbatch are carried out drying
Calcium carbonate masterbatch, titanium dioxide masterbatch, PBT masterbatch, acrylic resin, polyethylene, EMMA masterbatch are handled 40-120 ℃ of drying of carrying out 1-7 hour
Step 2, five-layer co-squeezing are gone into same die head
2.1, the superiors' (A layer) are high bright resin bed or white delustring layer, after material resin and various masterbatch additive evenly stirred in extruder front end mixed-hopper, respectively by a single screw extrusion machine, under 140-270 ℃,, clamp-on in the runner of the superiors' (A layer) of die head the resin fusion plastification;
2.2, the second layer (B layer) and the 4th layer (D layer) be organic foaming layer, after material resin and various masterbatch additive evenly stirred in extruder front end mixed-hopper, after in extruder front end mixed-hopper, evenly stirring, respectively by a single screw extrusion machine, under 140-270 ℃,, clamp-on respectively in the runner of the second layer (B layer) of die head and the 4th layer (D layer) the resin fusion plastification;
2.3, the 3rd layer (C layer) be inorganic foamed layer, after material resin and various masterbatch additive evenly stirred in extruder front end mixed-hopper, by two series connection extruders, under 140-280 ℃,, clamp-on in the 3rd layer the runner of same die head the resin fusion plastification;
2.4, orlop (E layer) is high bright resin bed, after material resin and various masterbatch additive evenly stirred in extruder front end mixed-hopper, by a single screw extrusion machine, under 140-270 ℃,, clamp-on in the runner of orlop (E layer) of die head the resin fusion plastification.
Step 3, same die head five-layer co-squeezing go out
With the five-layer co-squeezing product that step 1 obtains, extrude in the five-layer co-squeezing mode at 180-260 ℃ through same die head, make it to become the five stacked molten extrudates that add;
Step 4, cooling forming
Will be through the five stacked molten extrudates that add of same die head co-extrusion modling, by 15-40 ℃ of sharp cooling roll cooling forming film forming plate,
Step 5, biaxial tension get the lamina membranacea sheet with step 4 and send into design temperature earlier in 115-150 ℃ longitudinal tensile fixture, make the longitudinal stretching of 4-6 times of stretching ratio of preheating, extension, typing; Send into again and temperature is set in 150-160 ℃ cross directional stretch device, make the cross directional stretch of 8-11 times of stretching ratio of preheating, stretching, typing;
Step 6, will carry out sided corona treatment with the high frequency electric discharge device under 20 ~ 80W power through the synthetic paper of biaxial tension, again with the winder rolling.
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| 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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