CN102120395B - PVC-based wood-plastic environment-friendly pencil and manufacturing method thereof - Google Patents
PVC-based wood-plastic environment-friendly pencil and manufacturing method thereof Download PDFInfo
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- CN102120395B CN102120395B CN201110028304A CN201110028304A CN102120395B CN 102120395 B CN102120395 B CN 102120395B CN 201110028304 A CN201110028304 A CN 201110028304A CN 201110028304 A CN201110028304 A CN 201110028304A CN 102120395 B CN102120395 B CN 102120395B
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Abstract
The invention relates to a polyvinyl chloride (PVC)-based wood-plastic environment-friendly pencil, which comprises a pencil core and a pencil holder, and is characterized in that: the pencil holder is prepared by pressing two half pencil bodies made of a PVC-based wood-plastic composite material; and a semi-circular central slot used for accommodating the pencil core is formed on the half pencil bodies. The invention also provides a manufacturing method for the PVC-based wood-plastic environment-friendly pencil. The PVC-based wood-plastic environment-friendly pencil is reasonable in structure, a phenomenon that the pencil core is easy to break due to deformation of a wooden holder is avoided, the pencil holder is made of the PVC-based wood-plastic composite material, timber resources are saved, the cost is low and the environment is protected.
Description
Technical field
The present invention relates to a kind of PVC sill and mould environment protection type pencil and manufacturing approach thereof.
Background technology
A the whole world year production pencil reaches 30,000,000,000, and is wherein over half from China, produces nearly 20,000,000,000 per year, for world's pencil production exports first state.China will consume nearly 100 ten thousand steres of timber for Wood-bar pencil every year.According to 1 ton of Wood-bar pencil of the every production of measuring and calculating, need to consume 18 of the above high-quality lindens of life in 10 years.Produce 20000000000 pencils per year by China and calculate, need 1,000 ten thousand high-quality lindens of felling, consume timber ten thousand stere more than 70, be equivalent to 20000 hectares forest.Common one hectare of broad-leaf forest can consume 1000 kilograms carbon dioxide in one day, discharged 730 kilograms oxygen, with the carbon dioxide that consumes 7,500,000 tons year, discharged 5,400,000 tons oxygen.
The pencil shaft of traditional Wood-bar pencil is generally used linden production, and its operating process is generally: (1) linden sawmilling, block, and log is straightened one out and eased out his anxiety, evolution, saw piece, boils wood, cutting plate, rule limit machine and processes former base pencil plate; (2) through attachment strap machine, dry kiln, dying the plate jar, to carry out former blanket dry, painted; The roasting plate machine of application, chemicals consersion unit carry out roasted, the softening degenerative treatments of pencil plate; (3) use keyway planer, glue heart bundle folder machine, plane bar machine, sanding machine to carry out pencil plate heart plow and cut, embedding heart gummed, white shaft pencil is processed in the planing polishing; (4) carry out white bar monochrome, polychrome japanning, topping printing, thermoprint transfer printing, lac varnish glazing through painting machine, printing machine, thermal printer; Cut light, print, dip in head, processes such as dress rubber tip component-assembled, finished product general assembly process pencil.Traditional Wood-bar pencil manufacturing process is very complicated, and volume recovery is low, and yield rate is low, and wood consumption is big; And the easy core shift of Wood-bar pencil causes to roll up cuts the problem that disconnected core causes whole pencil to use, and the wood plastic composite material is even, and volume is cut easily.
Summary of the invention
The object of the present invention is to provide a kind of PVC sill to mould environment protection type pencil and manufacturing approach thereof, this PVC sill is moulded the rational in infrastructure of environment protection type pencil, has avoided causing pen core to rupture easily because of rod channeling off-centre; Adopt the PVC base wood-plastic composite material, utilized discarded wood chip, wood powder, save timber resources, cost is low, and technology is simple, and yield rate height and production efficiency are high.
Technical scheme of the present invention is: a kind of PVC sill is moulded environment protection type pencil; Comprise pencil-lead and pencil shaft; It is characterized in that: said pencil shaft is processed by the pressing of two pencil halfbodies; Said pencil halfbody is made by the PVC base wood-plastic composite material; The weight proportion of said PVC base wood-plastic composite material is 40% ~ 55% PVC, 1% ~ 3% stabilizing agent, 1% ~ 2% processing aid, 2% ~ 3% impact modifier, 2% ~ 5% lubricant, 1% ~ 2% foaming control agent and 35% ~ 50% wood powder, and said pencil halfbody is provided with the semicircle central channel that is used to install pencil-lead; Also be provided with on the said pencil halfbody and be convenient to the male and female groove that two pencil halfbodies cooperate, female groove of male and female groove is a groove, and the public groove of male and female groove is a raised line.
Simultaneously, the preparation method that the present invention also provides corresponding a kind of PVC sill to mould environment protection type pencil is characterized in that; It comprises the following steps: (1) configurating PVC base wood-plastic composite material, and proportioning by weight is 40% ~ 55% PVC, 1% ~ 3% stabilizing agent; 1% ~ 2% processing aid; 2% ~ 3% impact modifier, 2% ~ 5% lubricant, 1% ~ 2% foaming control agent and 35% ~ 50% wood powder; Said PVC base wood-plastic composite material is added with different pigments, has the texture of various seeds so that the pencil halfbody is shaped; (2) the PVC base wood-plastic composite material that configures is after the granulation of conical double-screw mixing granulator machine; The process conditions of granulation are: pressure 1.5～2Mpa; Screw speed is 10 ~ 40r/min, and 160～230 ℃ of heating-up temperatures are processed the pencil halfbody that has central channel with extruder with particle extrusion molding or injection molded and die forming again; Perhaps directly extrude the pencil halfbody that has central channel through twin-screw mixer, perhaps make the pencil halfbody through injection moulding or die forming with mould with one-step method; Also be provided with male and female groove on the said pencil halfbody, the moulding simultaneously of male and female groove and central channel, female groove of male and female groove is a groove, the public groove of male and female groove is a raised line; (3) the pencil pen core is put into the central channel of a pencil halfbody, buckled another pencil halfbody, pencil is processed in pressing.
The present invention has the following advantages:
(1) utilize discarded wood powder wood chip, have the good wooden sense organ of natural timber, cost is low, substitutes timber, helps solving the forest reserves problem that China reduces day by day, and resource is fully utilized;
(2) the PVC sill is moulded environment protection type pencil and adopts can one-time continuous be shaped many even tens PVC sills of extrusion molding production technology to mould the environment protection type pencil bar, and technology is simple, and yield rate is high, and production efficiency is high; Significantly reduce equipment cost and cost of labor;
(3) the PVC sill is moulded environment protection type pencil because penholder is the wire casing location structure of producing through mould shape, can avoid wooden pencil shaft fully because channeling produces error produces dystopy when closing up phenomenon, and it is simple and convenient that technology further becomes; Because pencil shaft is through the mould one-shot forming, dimensional standard precision is high, has avoided the Wood-bar pencil core shift of planing easily to cause that volume cuts the problem that disconnected whole pencil of core can't use;
(4) the PVC sill is moulded environment protection type pencil no matter be the hexgonal structure or the pencil of the pencil of circular configuration or other structures; A kind of pencil shaft of shape just can two be worked in coordination as long as be shaped; The smooth surface size is evenly unified; Length can be extended arbitrarily and cut, and is very convenient in penholder production and pencil-lead installation;
(5) can in the PVC base wood-plastic composite material, add different pigments and be made into the texture of various seeds, have the sense organ of natural timber.
Description of drawings
Fig. 1 is the cross-sectional structure sketch map of first embodiment of the invention.
Fig. 2 is the cross-sectional structure sketch map of second embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed description.
As shown in Figure 1; A kind of PVC sill of first embodiment of the invention is moulded environment protection type pencil; Comprise pencil-lead 1 and pencil shaft; It is characterized in that: said pencil shaft is processed by two pencil halfbody 2 pressings, and said pencil halfbody 2 is made by the PVC base wood-plastic composite material, and said pencil halfbody 2 is provided with the semicircle central channel 21 that is used to install pencil-lead 1.The cross section of pencil shaft shown in Figure 1 is rounded, and not pressing, because pencil halfbody 2 is about pencil shaft center symmetry; Pencil halfbody 2 semicirculars in shape; Certainly pencil shaft also can be oval, more can be polygonals such as triangle, hexagon, only need be replaced with type die and get final product.
As shown in Figure 2; A kind of PVC sill of second embodiment of the invention is moulded environment protection type pencil; Be that PVC sill in first embodiment is moulded to have additional on the pencil halfbody 2 of environment protection type pencil and is convenient to the male and female groove that two pencil halfbodies 2 cooperate; Female groove of male and female groove is a groove 22, and the public groove of male and female groove is a raised line 23.The cross section of pencil shaft shown in Figure 2 is hexagon, pressing, and pencil shaft also can be circular, oval certainly, more can be polygonals such as triangle, pentagon, only need be replaced with type die and get final product.
Simultaneously, the preparation method that the present invention provides corresponding a kind of PVC sill to mould environment protection type pencil is characterized in that; It comprises the following steps: (1) configurating PVC base wood-plastic composite material, and proportioning by weight is 40% ~ 55% PVC, 1% ~ 3% stabilizing agent; 1% ~ 2% processing aid; 2% ~ 3% impact modifier, 2% ~ 5% lubricant, 1% ~ 2% foaming control agent and 35% ~ 50% wood powder; (2) the PVC base wood-plastic composite material that configures is after the granulation of conical double-screw mixing granulator machine; Particle is extruded into the pencil halfbody 2 that has central channel 21 with extruder again; Perhaps directly extrude the pencil halfbody 2 that has central channel 21 through twin-screw mixer, perhaps make pencil halfbody 2 through injection moulding or die forming with mould with one-step method; (3) pencil pen core 1 is put into the central channel 21 of a pencil halfbody 2, buckled another piece pencil halfbody 2, pencil is processed in pressing.
The basic proportioning of the PVC base wood-plastic composite material in the above-mentioned steps (1) is as shown in table 1.
Table 1:PVC base wood-plastic composite material basic recipe (weight ratio %).
Because the wood powder ratio very high (can reach 50% at most) that this PVC base wood-plastic composite material adds, pencil has very strong woodiness touch.
In order to make the texture of various seeds; PVC base wood-plastic composite material in the above-mentioned steps (1) can be added with different pigments; Perhaps when extruding pencil halfbody 2, add different pigments; Regulate the interpolation kind and the addition of pigment as required, make the PVC base wood-plastic composite material have more the sense organ of natural timber.
The aforementioned stable agent is an organic tin stabilizer.
Above-mentioned processing aid is acrylic acid esters co-polymer (ACR), the ACR acrylic resin with acrylic acid or acrylic acid derivative be monomer polymerization or with they serve as main and with the prepared polymer of other unsaturated compound combined polymerizations; The basic function of PVC processing aid is exactly to improve the processing characteristics of PVC, promotes the plasticizing of PVC compound, so that under alap temperature, obtain the good material of plasticizing, improves Products Quality.
Above-mentioned impact modifier is an esters of acrylic acid PVC impact modifier (anti-impact ACR), and acrylic ester impact-resisting modifier belongs to the copolymer of nucleocapsid structure, and its shell is the methyl acrylic ester copolymer, and its nuclear is acrylic acid esters co-polymer; The basic function of impact modifier is exactly to improve the erosion-resisting characteristics of PVC goods, to satisfy the requirement of engineering plastics impact intensity, also can improve the heat endurance and the photostability of PVC goods simultaneously; The molecule of PVC belongs to polar molecule, and stronger molecular separating force is arranged, and makes its vitrification point than higher; The tensile strength of PVC is high than other general-purpose plastics, and this itself is the big advantage of one of which, but stronger molecular separating force between the PVC molecule; Make and be difficult to produce relative displacement between the PVC molecule; When goods received foreign impacts, impact energy just can not be converted into interior frictional heat effectively, thereby caused breaking of matrix material.
Above-mentioned lubricant is TR251, and TR251 is a kind of special in containing the lubricating additive that contains anion and cationic surfactant of EBS (ethylene bis stearic acid amide).
Above-mentioned foaming control agent is an acrylic acid esters co-polymer; In fact also be processing aids acrylic resin; All basic characteristics that possess the PVC processing aid, with the unique different molecular weight that just are of the general processing aid of PVC, the molecular weight of PVC foaming control agent will be far above universal processing aid; In the PVC foaming product, the purpose that adds super high molecular weight polymer is for the melt strength of plasticizing that promotes PVC and raising PVC foamed material, prevents the merging of bubble, to obtain the goods of even foaming; Guarantee that simultaneously melt has good flowability, to obtain the good goods of outward appearance.
The process conditions of granulation are in the above-mentioned steps (2): the operation pressure of conical double-screw is 1.5 ~ 2mpa, and time range is 60 ~ 200 seconds, 160 ~ 230 ℃ of temperature ranges, and screw speed is 10 ~ 40rpm.
In addition; When the PVC sill that has a male and female groove in making is moulded environment protection type pencil; Only need to offer on the mould of extruder or injection machine and molding apparatus in above-mentioned steps (2) with the pencil halfbody on the corresponding model of male and female groove, what male and female groove can be with central channel moulding simultaneously.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. a PVC sill is moulded environment protection type pencil; Comprise pencil-lead and pencil shaft; It is characterized in that: said pencil shaft is processed by the pressing of two pencil halfbodies; Said pencil halfbody is made by the PVC base wood-plastic composite material; The weight proportion of said PVC base wood-plastic composite material is 40% ~ 55% PVC, 1% ~ 3% stabilizing agent, 1% ~ 2% processing aid, 2% ~ 3% impact modifier, 2% ~ 5% lubricant, 1% ~ 2% foaming control agent and 35% ~ 50% wood powder, and said pencil halfbody is provided with the semicircle central channel that is used to install pencil-lead; Also be provided with on the said pencil halfbody and be convenient to the male and female groove that two pencil halfbodies cooperate, female groove of male and female groove is a groove, and the public groove of male and female groove is a raised line.
2. PVC sill according to claim 1 is moulded environment protection type pencil, it is characterized in that: the cross section of said pencil shaft is rounded, ellipse or polygon.
3. the preparation method that the PVC sill is moulded environment protection type pencil is characterized in that, it comprises the following steps: (1) configurating PVC base wood-plastic composite material; Proportioning by weight is 40% ~ 55% PVC; 1% ~ 3% stabilizing agent, 1% ~ 2% processing aid, 2% ~ 3% impact modifier; 2% ~ 5% lubricant, 1% ~ 2% foaming control agent and 35% ~ 50% wood powder; Said PVC base wood-plastic composite material is added with different pigments, has the texture of various seeds so that the pencil halfbody is shaped; (2) the PVC base wood-plastic composite material that configures is after the granulation of conical double-screw mixing granulator machine; The process conditions of granulation are: pressure 1.5～2Mpa; Screw speed is 10 ~ 40r/min, and 160～230 ℃ of heating-up temperatures are extruded into particle the pencil halfbody that has central channel with extruder again; Perhaps directly extrude the pencil halfbody that has central channel through twin-screw mixer, perhaps make the pencil halfbody through injection moulding or die forming with mould with one-step method; Also be provided with male and female groove on the said pencil halfbody, the moulding simultaneously of male and female groove and central channel, female groove of male and female groove is a groove, the public groove of male and female groove is a raised line; (3) the pencil pen core is put into the central channel of a pencil halfbody, buckled another pencil halfbody, pencil is processed in pressing.
4. PVC sill according to claim 3 is moulded the preparation method of environment protection type pencil; It is characterized in that: said stabilizing agent is an organic tin stabilizer; Said processing aid is an acrylic acid esters co-polymer; Said impact modifier is an esters of acrylic acid PVC impact modifier, and said lubricant is TR251, and said foaming control agent is an acrylic acid esters co-polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110028304A CN102120395B (en) | 2011-01-26 | 2011-01-26 | PVC-based wood-plastic environment-friendly pencil and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110028304A CN102120395B (en) | 2011-01-26 | 2011-01-26 | PVC-based wood-plastic environment-friendly pencil and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN102120395A CN102120395A (en) | 2011-07-13 |
| CN102120395B true CN102120395B (en) | 2012-09-05 |
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| CN201110028304A Expired - Fee Related CN102120395B (en) | 2011-01-26 | 2011-01-26 | PVC-based wood-plastic environment-friendly pencil and manufacturing method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103044940A (en) * | 2011-10-12 | 2013-04-17 | 义乌市顺意文具有限公司 | Environment-friendly type wood plastic pencil arm and production method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1164474A (en) * | 1996-05-08 | 1997-11-12 | 吴建明 | Pencil |
| CN1334204A (en) * | 2001-06-26 | 2002-02-06 | 俞立群 | Lignified plastic pencil and its making technology |
| CN1500832A (en) * | 2002-11-18 | 2004-06-02 | 华昌工贸有限公司 | Polyvinyl chloride (PVC) plastic-wood panel |
| CN1621440A (en) * | 2004-10-21 | 2005-06-01 | 俞立群 | Plastic lignified board and its making method |
| CN101948582A (en) * | 2010-10-12 | 2011-01-19 | 马铭远 | Recycled wood pencil plank stuff |
| CN201941325U (en) * | 2011-01-26 | 2011-08-24 | 杨大可 | PVC- based wood-plastic environment-friendly pencil |
-
2011
- 2011-01-26 CN CN201110028304A patent/CN102120395B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1164474A (en) * | 1996-05-08 | 1997-11-12 | 吴建明 | Pencil |
| CN1334204A (en) * | 2001-06-26 | 2002-02-06 | 俞立群 | Lignified plastic pencil and its making technology |
| CN1500832A (en) * | 2002-11-18 | 2004-06-02 | 华昌工贸有限公司 | Polyvinyl chloride (PVC) plastic-wood panel |
| CN1621440A (en) * | 2004-10-21 | 2005-06-01 | 俞立群 | Plastic lignified board and its making method |
| CN101948582A (en) * | 2010-10-12 | 2011-01-19 | 马铭远 | Recycled wood pencil plank stuff |
| CN201941325U (en) * | 2011-01-26 | 2011-08-24 | 杨大可 | PVC- based wood-plastic environment-friendly pencil |
Non-Patent Citations (1)
| Title |
|---|
| 吴波,齐暑华,王鑫.聚氯乙烯/木粉复合材料研究进展.《中国塑料》.2010,第24卷(第6期),6-12. * |
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Application publication date: 20110713 Assignee: Meihua Industry Co., Ltd. Assignor: Yang Dake Contract record no.: 2013350000043 Denomination of invention: PVC-based wood-plastic environment-friendly pencil and manufacturing method thereof Granted publication date: 20120905 License type: Exclusive License Record date: 20130410 |
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Effective date of registration: 20151023 Address after: 354300, 6 Wuyi Road, Wuyi District, Fujian, Wuyishan, China Patentee after: Meihua Industry Co., Ltd. Address before: 354306, 6, Wuyi Road, Wuyi District, Nanping, Fujian, Wuyishan Patentee before: Yang Dake |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20210126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |