CN102229188A - Method for manufacturing light stone paper - Google Patents
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Abstract
The invention discloses a method for manufacturing light stone paper. The method comprises the following steps: pelleting stone paper raw material and adding a foaming agent into parts of the raw materials; molding by virtue of a paper membrane manufacturing machine, and dragging the molded raw materials to foam at a height permitted roller; and carrying out cooling, side scraping and rolling on the foamed paper membrane, thus the light stone paper is manufactured. Because the interior of the light stone paper produced by the method provided by the invention has a blank hole structure, the purpose of reducing the gram weight of the stone paper is achieved; and simultaneously the excellent mechanical property of the common stone paper is maintained basically, and the tensile strength, bursting strength and tearing-resistance performance of the stone paper are still superior to those of the traditional fiber paper.
Description
Technical field
The invention belongs to polymeric material field, relate to a kind of manufacture method of lightweight stone paper.
Background technology
Call in the whole world under the overall background of energy-saving and emission-reduction, stone paper is paid attention to by people gradually.Stone paper does not need water in process of production, does not need to add strong acid, highly basic, bleaching powder and numerous organic chloride yet, and production process is environment friendly and pollution-free; It is to be main raw material(s) with cheap mineral powder, and cost is than the low 20%-30% of traditional paper, and its not only waterproof, grease proofing, insect protected, also in physical characteristic such as anti-ly tear, all superior on the folding resistance than wood pulp paper.These premium properties of stone paper have broad application prospects it on market, yet, existing stone paper also exists deficiency, hyperbaric calcium carbonate composition makes that its grammes per square metre is big, this causes the cost of transportation of stone paper to increase, make like product as the paper with same thickness, the weight of stone paper is all much bigger; The even continuous phase structure that resin and calcium carbonate form in the stone paper makes that the deflection of stone paper is also less, differs far away with traditional fibre paper; It is lower that stone paper itself contains the resin heat resistance, and it also is not very reliable causing the stone paper fire protecting performance.
Summary of the invention
Technical problem to be solved by this invention is the deficiency at existing stone paper existence, and a kind of manufacture method of lightweight stone paper is provided.
The inventive method can prepare three layers or double-deck lightweight stone paper, and wherein the lower floor of the intermediate layer of three-decker lightweight stone paper material and double-decker lightweight stone paper material is the foaming layer structure that has added blowing agent.Its preparation method is respectively:
The manufacture method of three-decker lightweight stone paper comprises the steps:
(1) with the natural inorganic breeze of 70～80 weight %, the resin of 17.5～28 weight % and the auxiliary agent of 2～2.5 weight %, through mixing extruding, mixing A layered material and the C layered material made; With the natural inorganic breeze of 50～60 weight %, resin and the auxiliary agent that reaches 2～2.5 weight % of 36.3～47.3 weight %, through mixing extruding, after mixing, put into the high speed cold mixer with blowing agent, 0.6～0.8 weight % blowing promotor of stone paper raw material 0.1～0.4 weight %, it is mixed obtain the B layered material;
(2) A layered material, B layered material and C layered material are dropped in three extruders, extrude at die head die orifice place through three laminar flow roads respectively, moulding obtains the paper film of three-decker, between forming temperature is controlled 160 ℃～170 ℃;
(3) the paper film of moulding is foamed processing, blowing temperature is at 180 ℃～200 ℃;
(4) the paper film after the foaming is made the lightweight stone paper of three-decker through cooling, side cut, rolling.
The manufacture method of double-decker lightweight stone paper comprises the steps:
(1) with the natural inorganic breeze of 70～80 weight %, the resin of 17.5～28 weight % and the auxiliary agent of 2～2.5 weight %, through mixing extruding, the mixing A layered material of making; With the natural inorganic breeze of 50～60 weight %, resin and the auxiliary agent that reaches 2～2.5 weight % of 36.3～47.3 weight %, through mixing extruding, after mixing, put into the high speed cold mixer with blowing agent, 0.6～0.8 weight % blowing promotor of stone paper raw material 0.1～0.4 weight %, it is mixed obtain containing the B layered material;
(2) A layered material and B layered material are dropped in the two extruders, extrude at die head die orifice place through two-layer runner respectively, moulding obtains the paper film of double-layer structure, and forming temperature is controlled between 160 ℃～170 ℃;
(3) the paper film of moulding is foamed processing, the temperature of foaming is at 180 ℃～200 ℃;
(4) the paper film after the foaming is made the lightweight stone paper of double-layer structure through cooling, side cut, rolling.
More specifically, in above-mentioned two schemes,
The mixture that mentioned natural inorganic breeze is made up of calcium carbonate, titanium dioxide, diatomite, talcum powder.Described resin can use polyethylene and polypropylene.
The auxiliary agent that adds in the natural inorganic breeze comprises coupling agent, dispersant, antioxidant and antistatic additive.
Blowing promotor comprises crosslinking agent and dispersant.
The lightweight stone paper that the inventive method is produced because of its inside has the emptying aperture structure, thereby has reached the purpose that reduces the stone paper grammes per square metre.Compare with the stone paper of same thickness, the foaming layer grammes per square metre of lightweight stone paper provided by the invention is than common stone paper little 18%-35%.Simultaneously because the existence of the inner emptying aperture structure of stone paper is equivalent to form many and " column " that stone paper is surperficial vertical in stone paper inside, this structure has improved the deflection of stone paper to a certain extent.Lightweight stone paper of the present invention has kept the good mechanical property of common stone paper substantially, and its tensile strength, bursting strength, tear resistance still are better than traditional fibre paper.
Description of drawings
Fig. 1 makes not foaming layer Electronic Speculum micro-structure diagram in the lightweight stone paper for embodiment 1.
Fig. 2 makes foaming layer Electronic Speculum micro-structure diagram in the lightweight stone paper for embodiment 1.
Fig. 3 is the lightweight stone paper structural representation of three-decker, and A and C are not foaming layer, and B is foaming layer.
Fig. 4 is double-deck lightweight stone paper structural representation, and A is not foaming layer, and B is foaming layer.
Fig. 5 is the manufacturing flow chart of lightweight stone paper.
Fig. 6 is the used die head generalized section of lightweight stone paper manufacture process of three-decker.
Fig. 7 is the assembling schematic diagram of used three extruders of lightweight stone paper manufacture process of three-decker.
Fig. 8 is the used die head generalized section of double-deck lightweight stone paper manufacture process.
Fig. 9 is the assembling schematic diagram of the used two extruders of double-deck lightweight stone paper manufacture process.
The number in the figure explanation:
A, b, c extruder
111 runners that cooperate extruder a to use
112 runners that cooperate extruder b to use
113 runners that cooperate extruder c to use
1 extrusion device
2 extrusion dies
3,4,5,6,7,19,20,21 carry-over pinch rolls
8 preheat rolls
9,10,11,12 limit for height rollers
13,14,15 conveying rollers
16 high-temperature resistant belt conveyers
17 cooling and shaping devices
18 corona treatment plants
22 wrap-ups.
The specific embodiment
The manufacturing process of lightweight stone paper of the present invention is with reference to figure 5.
When making the lightweight stone paper of three-decker (structure is seen Fig. 3), extrusion device 1 comprises three extruder a, b, c, and Fig. 7 is seen in the assembling signal of three extruders.Mix extruding through comminutor, the A layered material of mixing one-tenth and C layered material are supplied with extruder a and extruder c respectively and are used.Mix extruding through comminutor, and in the high speed cold mixer, mix the B layered material of making, use for extruder b.Extruder a, b, c internal temperature are controlled between 160 ℃ to 170 ℃.
The extrusion die 2 that links to each other with extrusion device 1 has three passages, and structure as shown in Figure 6.After pellet became molten, the A layered material was suppressed conveying through the screw rod of extruder a, and for extruding in 111 laminar flow roads, the B layered material is suppressed conveying through the screw rod of extruder b, and for extruding in 112 laminar flow roads, the C layered material is suppressed conveying through the screw rod of extruder c, for extruding in 113 laminar flow roads.Come together in die head die orifice place through 111 layers, 112 layers, 113 laminar flow road extrudates, form the three-decker that the surface combines, wherein the temperature of die head also is controlled between 160 ℃ to 170 ℃, avoids blowing agent in this stage foaming.
The stone paper paper film that extrusion molding obtains draws to preheat roll under the traction of carry-over pinch rolls, and the temperature of control preheat roll is at 100 ℃ to 140 ℃.In the process of stone paper paper film traction, by controlling the speed difference of adjacent carry-over pinch rolls 4,5,6,7, stone paper is carried out longitudinal stretching, thereby improve the mechanical property of stone paper.Enter the limit for height roller then, the temperature of control limit for height roller makes the stone paper paper film foaming of producing between 180 ℃ to 200 ℃.Control thickness (height of limit for height roller is meant the distance on limit for height roller and conveyer belt surface) after the stone paper foaming by the height of regulating the limit for height roller, wherein the height of limit for height roller 9 is the thickness of stone paper paper film, the height of limit for height roller 10,11 is 1-1.5 times of limit for height roller 9 height, and the height of limit for height roller 12 is the thickness of final lightweight stone paper.Stone paper behind the foamable is carried out cooling and shaping through apparatus for supercooling, makes the temperature of stone paper reduce to 70 ℃ to 100 ℃.Then the stone paper after the typing is carried out sided corona treatment, side cut, winding process and make lightweight stone paper finished product.
More than Shuo Ming three layers of lightweight stone paper in manufacture process controllable thickness built in 50 microns to 200 microns, the A superficial layer occupies 10% to 20%, and B occupies in the intermediate layer 80% to 60%, and the C superficial layer occupies 10% to 20%, can be according to market demand, adjust the thickness proportion that A, B, C layer occupy respectively.Because its intermediate layer is through the foaming gained, compares the stone paper of condition of equivalent thickness, its grammes per square metre has reduced by 18% to 35%, and deflection, shock-absorbing capacity are improved, and therefore three layers of lightweight stone paper are suitable as padded coaming, art work, printing material etc.
The present invention has that the manufacturing process of lightweight stone paper of the manufacturing process of double-deck lightweight stone paper (structure is seen Fig. 4) and three-decker is basic identical, and difference is that extrusion device 1 uses two extruders a and b, and Fig. 9 is seen in its assembling signal.The structure of the extrusion die that links to each other with extrusion device is seen shown in Figure 8, has only two passages.Extruder a is responsible for pushing feed and extrudes for 111 laminar flow roads, extruder b is responsible for pushing feed and extrudes for 112 laminar flow roads, coming together in die head die orifice place through 111 layers, 112 laminar flow road extrudates, form the double-decker that the surface combines, is stone paper paper film through the die head extrusion molding.
The manufacturing thickness of double-deck light stone paper is 50 microns to 200 microns, wherein the thickness proportion that can occupy according to the market demand adjustment of A layer and B layer thickness.For example the A layer accounts for 10%, the B layer account for 90% or the A layer account for 50%, the B layer account for 50% or the A layer account for 90%, the B layer accounts for 10%.The double-deck light stone paper has one deck expanded material, and it is good to have a shock-absorbing capacity, and the premium properties that grammes per square metre is little is applicable to padded coaming, art work, printing material (use of the material that is fit to be printed on one side, but economical with materials).
Example 1: the lightweight stone paper of three-decker (its foaming layer and not foaming layer microstructure are seen Fig. 1, Fig. 2)
The A layered material uses for extruder a aspect material combination, and the B layered material uses for extruder b, and the C layered material uses for extruder c.The A layered material comprises the natural inorganic breeze (calcium carbonate accounts for 35%, titanium dioxide accounts for 5%, diatomite accounts for 35%, talcum powder account for 5%) of 80% weight; Auxiliary agent (0.6% the β-(3 of resin of 18% weight (polyethylene 10%, polypropylene 8%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.In comminutor,, use for extruder a through mixing the mixing A layered material of making of extruding.The B layered material comprises the inorganic natural ore powder (calcium carbonate accounts for 28%, titanium dioxide accounts for 7%, diatomite account for 25%) of 60% weight; Auxiliary agent (0.6% the β-(3 of resin of 38% weight (polyethylene 28%, polypropylene 10%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.Through in comminutor, mixing the mixing pellet of making of extruding; the Celogen Az that in pellet, adds 0.1 weight % again, the stearic acid of 0.5 weight %, two tert-butyl peroxy cumenes and the B layered material of 0.3 weight % are put into the high speed cold mixer; it is mixed obtain the B layered material, use for extruder b.The C layered material comprises the natural inorganic breeze (calcium carbonate accounts for 35%, titanium dioxide accounts for 5%, diatomite accounts for 35%, talcum powder account for 5%) of 80% weight; Auxiliary agent (0.6% the β-(3 of resin of 18% weight (polyethylene 10%, polypropylene 8%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.In comminutor,, use for extruder c through mixing the mixing C layered material of making of extruding.
Above A layered material drops into extruder a, and the B layered material drops into extruder b, and the C layered material drops into extruder c.According to the requirement of product thickness, produce 100 microns lightweight stone paper, the shared thickness proportion of each layer is A layer 15%, B layer 70%, C layer 15%.
Example 2: the lightweight stone paper of three-decker
The A layered material uses for extruder a aspect material combination, and the B layered material uses for extruder b, and the C layered material uses for extruder c.The A layered material comprises the natural inorganic breeze (calcium carbonate accounts for 35%, titanium dioxide accounts for 5%, diatomite accounts for 35%, talcum powder account for 5%) of 80% weight; Auxiliary agent (0.6% the β-(3 of resin of 18% weight (polyethylene 10%, polypropylene 8%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.In comminutor,, use for extruder a through mixing the mixing A layered material of making of extruding.The B layered material comprises the inorganic natural ore powder (calcium carbonate accounts for 28%, titanium dioxide accounts for 7%, diatomite account for 25%) of 60% weight; Auxiliary agent (0.6% the β-(3 of resin of 38% weight (polyethylene 28%, polypropylene 10%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.Through in comminutor, mixing the mixing pellet of making of extruding; the Celogen Az that in pellet, adds 0.4 weight % again, the stearic acid of 0.5 weight %, two tert-butyl peroxy cumenes and the B layered material of 0.3 weight % are put into the high speed cold mixer; it is mixed obtain the B layered material, use for extruder b.The C layered material comprises the natural inorganic breeze (calcium carbonate accounts for 35%, titanium dioxide accounts for 5%, diatomite accounts for 35%, talcum powder account for 5%) of 80% weight; Auxiliary agent (0.6% the β-(3 of resin of 18% weight (polyethylene 10%, polypropylene 8%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.In comminutor,, use for extruder c through mixing the mixing C layered material of making of extruding.
Above A layered material drops into extruder a, and the B layered material drops into extruder b, and the C layered material drops into extruder c.According to the requirement of product thickness, produce 120 microns lightweight stone paper, the shared thickness proportion of each layer is A layer 15%, B layer 70%, C layer 15%.
Example 3: double-deck lightweight stone paper
The A layered material uses for extruder a aspect material combination, and the B layered material uses for extruder b.The A layered material comprises the natural inorganic breeze (calcium carbonate accounts for 35%, titanium dioxide accounts for 5%, diatomite accounts for 35%, talcum powder account for 5%) of 80% weight; Auxiliary agent (0.6% the β-(3 of resin of 18% weight (polyethylene 10%, polypropylene 8%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.In comminutor, pushing the mixing A layered material of making, use for extruder a through mixing.The B layered material comprises the inorganic natural ore powder (calcium carbonate accounts for 28%, titanium dioxide accounts for 7%, diatomite account for 25%) of 60% weight; Auxiliary agent (0.6% the β-(3 of resin of 38% weight (polyethylene 28%, polypropylene 10%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.Through in comminutor, mixing the mixing pellet of making of extruding; the Celogen Az that in pellet, adds 0.1 weight % again, the stearic acid of 0.5 weight %, two tert-butyl peroxy cumenes and the B layered material of 0.3 weight % are put into the high speed cold mixer; it is mixed obtain the B layered material, use for extruder b.Above A layered material drops into extruder a, and B layer compound drops into extruder b, according to the requirement of product thickness, produces 100 microns lightweight stone paper, and the shared thickness proportion of each layer is A layer 30%, B layer 70%.
Example 4: double-deck lightweight stone paper
The A layered material uses for extruder a aspect material combination, and B layer compound uses for extruder b.A layer pellet comprises the natural inorganic breeze (calcium carbonate accounts for 35%, titanium dioxide accounts for 5%, diatomite accounts for 35%, talcum powder account for 5%) of 80% weight; Auxiliary agent (0.6% the β-(3 of resin of 18% weight (polyethylene 10%, polypropylene 8%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.In comminutor, pushing the mixing A layered material of making, use for extruder a through mixing.The B layered material comprises the inorganic natural ore powder (calcium carbonate accounts for 28%, titanium dioxide accounts for 7%, diatomite account for 25%) of 60% weight; Auxiliary agent (0.6% the β-(3 of resin of 38% weight (polyethylene 28%, polypropylene 10%) and 2% weight, 4-epoxy basic ring ethyl) ethyl trimethoxy silane as coupling agent, 0.4% silica as dispersant, 0.3%2, three grades of butyl of 6--4-methylphenol as two (2-ethoxy) stearmides of antioxidant and 0.7%N-as antistatic additive), above material composition adds up to 100 weight %.Through in comminutor, mixing the mixing pellet of making of extruding; the Celogen Az that in pellet, adds 0.4 weight % again, the stearic acid of 0.5 weight %, two tert-butyl peroxy cumenes and the B layered material of 0.3 weight % are put into the high speed cold mixer; it is mixed obtain the B layered material, use for extruder b.Above A layered material drops into extruder a, and B layer compound drops into extruder b, according to the requirement of product thickness, produces 120 microns lightweight stone paper, and the shared thickness proportion of each layer is A layer 30%, B layer 70%.
Claims (8)
1. the manufacture method of three-decker lightweight stone paper is characterized in that comprising the steps:
(1) with the natural inorganic breeze of 70～80 weight %, the resin of 17.5～28 weight % and the auxiliary agent of 2～2.5 weight %, through mixing extruding, mixing A layered material and the C layered material made; With the natural inorganic breeze of 50～60 weight %, resin and the auxiliary agent that reaches 2～2.5 weight % of 36.3～47.3 weight %, through mixing extruding, after mixing, put into the high speed cold mixer with blowing agent, 0.6～0.8 weight % blowing promotor of stone paper raw material 0.1～0.4 weight %, it is mixed obtain the B layered material;
(2) A layered material, B layered material and C layered material are dropped in three extruders, extrude at die head die orifice place through three laminar flow roads respectively, moulding obtains the paper film of three-decker, between forming temperature is controlled 160 ℃～170 ℃;
(3) the paper film of moulding is foamed processing, blowing temperature is at 180 ℃～200 ℃;
(4) the paper film after the foaming is made the lightweight stone paper of three-decker through cooling, side cut, rolling.
2. manufacture method as claimed in claim 1 is characterized in that: the mixture that described natural inorganic breeze is made up of calcium carbonate, titanium dioxide, diatomite, talcum powder.
3. manufacture method as claimed in claim 1 or 2 is characterized in that: the auxiliary agent that adds in the natural inorganic breeze comprises coupling agent, dispersant, antioxidant and antistatic additive.
4. manufacture method as claimed in claim 1 or 2 is characterized in that: described blowing promotor comprises crosslinking agent and dispersant.
5. the manufacture method of double-decker lightweight stone paper is characterized in that comprising the steps:
(1) with the natural inorganic breeze of 70～80 weight %, the resin of 17.5～28 weight % and the auxiliary agent of 2～2.5 weight %, through mixing extruding, the mixing A layered material of making; With the natural inorganic breeze of 50～60 weight %, resin and the auxiliary agent that reaches 2～2.5 weight % of 36.3～47.3 weight %, through mixing extruding, after mixing, put into the high speed cold mixer with blowing agent, 0.6～0.8 weight % blowing promotor of stone paper raw material 0.1～0.4 weight %, it is mixed obtain the B layered material;
(2) A layered material and B layered material are dropped in the two extruders, extrude at die head die orifice place through two-layer runner respectively, moulding obtains the paper film of double-layer structure, and forming temperature is controlled between 160 ℃～170 ℃;
(3) the paper film of moulding is foamed processing, the temperature of foaming is at 180 ℃～200 ℃;
(4) the paper film after the foaming is made the lightweight stone paper of double-layer structure through cooling, side cut, rolling.
6. manufacture method as claimed in claim 5 is characterized in that: the mixture that described natural inorganic breeze is made up of calcium carbonate, titanium dioxide, diatomite, talcum powder.
7. as claim 5 or 6 described manufacture methods, it is characterized in that: the auxiliary agent that adds in the natural inorganic breeze comprises coupling agent, dispersant, antioxidant and antistatic additive.
8. as claim 5 or 6 described manufacture methods, it is characterized in that: described blowing promotor comprises crosslinking agent and dispersant.
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| CN104441870A (en) * | 2014-11-29 | 2015-03-25 | 昆明钢铁控股有限公司 | Low-density stone paper and preparation method thereof |
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| CN105584023B (en) * | 2015-12-21 | 2018-02-06 | 中山市合众包装材料有限公司 | A kind of preparation method of composite buffering wrapping paper |
| CN105482222A (en) * | 2015-12-23 | 2016-04-13 | 成都新柯力化工科技有限公司 | Buffer composite packaging paper and preparation method thereof |
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Application publication date: 20111102 |