CN105252782A - Device for reducing density of rich mineral paper - Google Patents
Device for reducing density of rich mineral paper Download PDFInfo
- Publication number
- CN105252782A CN105252782A CN201510593210.0A CN201510593210A CN105252782A CN 105252782 A CN105252782 A CN 105252782A CN 201510593210 A CN201510593210 A CN 201510593210A CN 105252782 A CN105252782 A CN 105252782A
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- CN
- China
- Prior art keywords
- stone paper
- extruder
- equipment
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- order
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a device for reducing the density of rich mineral paper. The device comprises a first-stage extruder, a second-stage extruder, a flat-end die, a three-roller molding machine, a longitudinal drawing unit and an injection device which are arranged in sequence, wherein the first-stage extruder and the second-stage extruder are used for extruding a rich mineral paper base material; the flat-end die is used for molding the molten rich mineral paper base material to be rich mineral paper sheets; the three-roller molding machine is used for pressing the rich mineral paper sheets to be rich mineral paper base sheets of a certain thickness; the longitudinal drawing unit is used for drawing the rich mineral paper base sheets to be raw rich mineral paper of a fibration structure; the injection device is used for injecting foaming agents into the first-stage extruder. By means of the device for reducing the density of the rich mineral paper, the density of the rich mineral paper can be controlled to be 0.6 g/cm<3>, and the rich mineral paper is greatly superior to rich mineral paper with the conventional density of 0.9-1.2 g/cm<3> on the market.
Description
Technical field
the present invention relates to a kind of equipment for reducing stone paper density.
Background technology
stone paper is a kind of new synthetic paper between paper and plastics, take calcium carbonate as primary raw material, high molecular polymer is auxiliary material, make through series of process process, it is alternative traditional part functionalities paper, professional paper both, can substitute again traditional most of plastic packing article, and has the advantages that cost is low, controllability is degraded, a large amount of costs can be saved for user, and can not pollution be produced.In the formula composition of stone paper, calcium carbonate (CaCO
3
) content is about 70-80%, the content of PP or PE is about 15-20%, and remainder is types of functionality auxiliary agent.Present puzzlement stone paper industrial circle, except stability and the machinability of formula, also have the density issue of end article, the latter determines the cost of stone paper and the grammes per square metre of finished paper.The compacting phsyical density of natural whiting is 2600-2750Kg/m
3
, the material density of PP, PE is 900-950Kg/m
3
, additive content in formula composition is lower, and density contribution can be ignored substantially, so the final densities of finished product stone paper, depends primarily on calcium carbonate and PP(or PE) content composition and the heterogeneous microstructure of goods.
the stone paper of great majority sale on the market at present, the density range of its finished product is at 900-1200Kg/m
3
, in contrast to the common wood pulp paper in market (such as copy paper, printing paper, printing paper etc.), its density is generally at 600-800Kg/m
3
, say from the visual sense of user, the stack pile adopting stone paper to do, " book " that do than conventional paper with " book " of number of pages will weigh.The increase of finished paper density, not only carries hydraulic performance decline, also creates the increase of paper using cost.The stone paper body paper of current comparative maturity, its formulation cost is approximately 2/3 of traditional wood pulp paper, if but stone paper density promotes 1/3, then mean that the actual paper using cost of printed matter does not decline, the weight of the printed matter simultaneously also increased, can not competitive advantage be embodied, directly can have influence on the follow-up popularization of stone paper.
Summary of the invention
in order to solve the problem, the object of the present invention is to provide a kind of equipment for reducing stone paper density.
in order to reach above object, the technical solution used in the present invention is: a kind of equipment for reducing stone paper density, it comprise set gradually for the first rank extruder that stone paper base material is extruded and second-order extruder, for the stone paper substrate forming of melting being become the tack mould of stone paper sheet material, for stone paper sheet material being pressed into the three-roller forming machine of certain thickness stone paper substrate, for stone paper substrate being drawn into the longitudinal stretching unit of the stone paper body paper of fibrosis formation, equipment for reducing stone paper density also comprises the injection device for injecting blowing agent in the first rank extruder.
further, the first rank extruder is connected by first flow with second-order extruder.
further, one end be connected with second-order extruder of the first rank extruder is provided with the first rank net-changing device, and this first rank net-changing device is provided with the first rank filter screen for impurity screening.
further, second-order extruder is connected by the second runner with tack mould.
further, one end be connected with tack mould of second-order extruder is provided with second-order net-changing device, and this second-order net-changing device is provided with the second-order filter screen for impurity screening.
further, the equipment for reducing stone paper density also comprises for the winder by stone paper body paper rolling rolling, and this winder is positioned at the contrary opposite side of the three-roller forming machine side of longitudinal stretching unit.
further, longitudinal stretching unit comprises frame and rotates the multiple rollers be arranged in frame.
further, the other end that the one end that is connected with second-order extruder of the first rank extruder is contrary has charging aperture.
owing to adopting technique scheme, the present invention, can by the density domination of stone paper to 0.6g/cm for reducing the equipment of stone paper density
3
, be greatly better than 0.9-1.2g/cm on the market
3
conventional density stone paper.
Accompanying drawing explanation
accompanying drawing 1 is the structural representation of the present invention for reducing the equipment of stone paper density.
number in the figure is:
1, the first rank extruder; 11, the first rank net-changing device; 12, charging aperture; 2, second-order extruder; 21, second-order net-changing device; 3, tack mould; 4, three-roller forming machine; 5, longitudinal stretching unit; 51, frame; 52, roller; 6, winder; 7, injection device; 8, first flow; 9, the second runner.
Detailed description of the invention
below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art.
as can be seen from the structural representation of accompanying drawing 1, present embodiments provide a kind of equipment for reducing stone paper density, it comprise set gradually for the first rank extruder 1 that stone paper base material is extruded and second-order extruder 2, for the stone paper substrate forming of melting being become the tack mould 3 of stone paper sheet material, for stone paper sheet material being pressed into the three-roller forming machine 4 of certain thickness stone paper substrate, for stone paper substrate being drawn into the longitudinal stretching unit 5 of the stone paper body paper of fibrosis formation, for the winder 6 by stone paper body paper rolling rolling, equipment for reducing stone paper density also comprises the injection device 7 for injecting blowing agent in the first rank extruder 1.
in the present embodiment, adopt supercritical CO
2
as physical blowing agent.Foaming is the method effectively reducing extrudate density, by injection device 7 by CO
2
be injected in the first rank extruder 1 and mix mutually with stone paper material.
the equipment of this reduction stone paper density has the stone paper base material of two rank extruders (i.e. the first rank extruder 1 and second-order extruder 2) extrusion foaming.In the process of material plasticizing, through the plasticizing of twice extruder, but the function that twice extruder is born is different.In the scheme of the present embodiment, the first rank extruder 1 can be single screw extrusion machine, also can be multi-screw extruder, supercritical CO
2
be injected in the first rank extruder 1 by injection device 7, the major function of the first rank extruder 1 is by the stone paper base material melting of cold conditions, then fully mixes with blowing agent.First rank extruder 1 is connected by first flow 8 with second-order extruder 2, one end be connected with second-order extruder 2 of first rank extruder 1 is provided with the first rank net-changing device 11, this the first rank net-changing device 11 is provided with the first rank filter screen (attached not shown in FIG.) for impurity screening, and the other end of the first rank extruder 1 has charging aperture 12.Stone paper base material enters the first rank extruder 1 from charging aperture 12, is mixed with blowing agent and enters second-order extruder 2 by first flow 8 after the first rank extruder 1 is extruded.In the scheme of the present embodiment, second-order extruder 2 can be single screw extrusion machine, also can be multi-screw extruder, and the major function of second-order extruder 2 is the materials cooling mixed foaming agent, for suitable temperature conditions is created in foaming.Second-order extruder 2 is connected by the second runner 9 with tack mould 3.One end be connected with tack mould 3 of second-order extruder 2 is provided with second-order net-changing device 21, and this second-order net-changing device 21 is provided with the second-order filter screen (attached not shown in FIG.) for impurity screening.
the stone paper substrate forming of melting is become stone paper sheet material by flat-mould head 3, and release pressure, in the process of release pressure, sheet material completes foaming, forms micropore in inside, thus lower than traditional matrix density do not foamed.
three-roller forming machine 4 is for being pressed into certain thickness foaming stone paper substrate by the stone paper sheet material of melting.After stone paper sheet material leaves flat-mould head 3, to need by three-roller forming machine 4, by its cooling and shaping, to be pressed into the substrate of a gauge thickness.Three-roller forming machine 4 can be vertical three rollers, oblique three rollers, sleeping three rollers or other forms of three-roller, its forming principle and common non-foamed sheet material similar.
longitudinal stretching unit 5 is for becoming the stone paper body paper of fibrosis formation by the stone paper substrate longitudinal stretching of foaming.Longitudinal stretching unit 5 comprises frame 51 and rotates the multiple rollers 52 be arranged in frame 51.After substrate containing foaming micropore is shaping, enter longitudinal stretching unit 5, obtained the stretched sheet of different stretch ratio by the roller speed difference between each roller 51, the temperature different by each roller 51 is arranged, and can regulate the internal stress distribution of sheet material after stretching.By setting suitable stretch ratio and temperature, the stone paper body paper of different fibrillatable, porosity and density can be obtained.
the stone paper body paper produced is by winder 6 rolling rolling.
this, can by the density domination of stone paper to 0.6g/cm for reducing the equipment of stone paper density
3
, be greatly better than 0.9-1.2g/cm on the market
3
conventional density stone paper.
above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. the equipment for reducing stone paper density, it is characterized in that: it comprise set gradually for the first rank extruder (1) that stone paper base material is extruded and second-order extruder (2), for the stone paper substrate forming of melting being become the tack mould (3) of stone paper sheet material, for stone paper sheet material being pressed into the three-roller forming machine (4) of certain thickness stone paper substrate, for stone paper substrate being drawn into the longitudinal stretching unit (5) of the stone paper body paper of fibrosis formation, the described equipment for reducing stone paper density also comprises the injection device (7) for injecting blowing agent in the first rank extruder (1).
2. the equipment for reducing stone paper density according to claim 1, is characterized in that: the first described rank extruder (1) is connected by first flow (8) with second-order extruder (2).
3. the equipment for reducing stone paper density according to claim 1, it is characterized in that: one end be connected with second-order extruder (2) of the first described rank extruder (1) is provided with the first rank net-changing device (11), and these first rank net-changing device (11) are provided with the first rank filter screen for impurity screening.
4. the equipment for reducing stone paper density according to claim 1, is characterized in that: described second-order extruder (2) is connected by the second runner (9) with tack mould (3).
5. the equipment for reducing stone paper density according to claim 1, it is characterized in that: one end be connected with tack mould (3) of described second-order extruder (2) is provided with second-order net-changing device (21), and this second-order net-changing device (21) is provided with the second-order filter screen for impurity screening.
6. the equipment for reducing stone paper density according to claim 1, it is characterized in that: it also comprises for the winder (6) by stone paper body paper rolling rolling, this winder (6) is positioned at the contrary opposite side of three-roller forming machine (4) side of longitudinal stretching unit (5).
7. the equipment for reducing stone paper density according to claim 1, is characterized in that: described longitudinal stretching unit (5) comprises frame (51) and rotation and is arranged on multiple rollers (52) in described frame (51).
8. the equipment for reducing stone paper density according to claim 2, is characterized in that: the other end that the one end that is connected with second-order extruder (2) of the first described rank extruder (1) is contrary has charging aperture (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593210.0A CN105252782B (en) | 2015-07-20 | 2015-09-17 | Equipment for reducing stone paper density |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015205234975 | 2015-07-20 | ||
| CN201520523497 | 2015-07-20 | ||
| CN201510593210.0A CN105252782B (en) | 2015-07-20 | 2015-09-17 | Equipment for reducing stone paper density |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105252782A true CN105252782A (en) | 2016-01-20 |
| CN105252782B CN105252782B (en) | 2018-01-16 |
Family
ID=55092860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510593210.0A Active CN105252782B (en) | 2015-07-20 | 2015-09-17 | Equipment for reducing stone paper density |
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|---|---|
| CN (1) | CN105252782B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178159A (en) * | 1996-07-10 | 1998-04-08 | 三井东压化学株式会社 | Process for preparing expanded product of thermoplastic resin |
| CN102179959A (en) * | 2011-03-09 | 2011-09-14 | 崔江 | Bidirectional stretching production line of stone paper |
| CN102229188A (en) * | 2011-04-15 | 2011-11-02 | 武汉大学 | Method for manufacturing light stone paper |
| CN102444053A (en) * | 2010-09-30 | 2012-05-09 | 南通博耐机械有限公司 | Processing technology and special equipment used for producing environment-friendly type synthetic paper |
| CN103273715A (en) * | 2013-06-01 | 2013-09-04 | 鸿圣（江西）彩印包装实业有限公司 | Novel structure stone paper corrugated paper as well as production line and production method thereof |
-
2015
- 2015-09-17 CN CN201510593210.0A patent/CN105252782B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178159A (en) * | 1996-07-10 | 1998-04-08 | 三井东压化学株式会社 | Process for preparing expanded product of thermoplastic resin |
| CN102444053A (en) * | 2010-09-30 | 2012-05-09 | 南通博耐机械有限公司 | Processing technology and special equipment used for producing environment-friendly type synthetic paper |
| CN102179959A (en) * | 2011-03-09 | 2011-09-14 | 崔江 | Bidirectional stretching production line of stone paper |
| CN102229188A (en) * | 2011-04-15 | 2011-11-02 | 武汉大学 | Method for manufacturing light stone paper |
| CN103273715A (en) * | 2013-06-01 | 2013-09-04 | 鸿圣（江西）彩印包装实业有限公司 | Novel structure stone paper corrugated paper as well as production line and production method thereof |
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| Publication number | Publication date |
|---|---|
| CN105252782B (en) | 2018-01-16 |
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