CN102825716A - Production process of EPS (Expanded Polystyrene) plate - Google Patents

Production process of EPS (Expanded Polystyrene) plate Download PDF

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Publication number
CN102825716A
CN102825716A CN 201210313574 CN201210313574A CN102825716A CN 102825716 A CN102825716 A CN 102825716A CN 201210313574 CN201210313574 CN 201210313574 CN 201210313574 A CN201210313574 A CN 201210313574A CN 102825716 A CN102825716 A CN 102825716A
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CN
China
Prior art keywords
eps
weighing
bulk density
prefoam
production technology
Prior art date
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.)
Pending
Application number
CN 201210313574
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Chinese (zh)
Inventor
耿占锁
张学礼
李蛟
李来喜
郭文学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Guangxing Machinery Technology Co Ltd
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Hebei Guangxing Machinery Technology Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Hebei Guangxing Machinery Technology Co Ltd filed Critical Hebei Guangxing Machinery Technology Co Ltd
Priority to CN 201210313574 priority Critical patent/CN102825716A/en
Publication of CN102825716A publication Critical patent/CN102825716A/en
Pending legal-status Critical Current

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Abstract

The invention provides a production process of an EPS plate. The production process comprises the following steps that: after a forming process (that is, a plate is machined and formed), a weighing device is additionally arranged to weigh a formed EPS plate product and feed back the actual weighing result to a regulating type foaming machine; the regulating type foaming machine is used for calculating according to the weighing result, judging whether pre-formed EPS particles are necessary to be foamed again and regulating the volume weight to the needed volume weight, so that the volume weight of the final product is more accurate.

Description

The EPS board production technology
Technical field
[0001] the present invention relates to the production technology of EPS plate, relate in particular to a kind of production technology that can accurately adjust EPS plate unit weight.
Background technology
The expandable polystyrene cystosepiment--have another name called cystosepiment, styrofoam, EPS plate; Be to be raw material by expandable polystyrene (EPS) particle; Through heating prefoam; Hot briquetting in mould and the foam plastics slab processed with fine hole-closing structure; This product has plain edition and flame retardant type, and its main operating characteristic has: light weight, have that the ability, the heat-proof quality that absorb shock loading are good, sound insulation value is good, anti-aging, corrosive nature, therefore; The packings such as heat-barrier material, instrument and meter, porcelain, glassware, household electrical appliances that it is widely used in heat-insulation layer, vehicle and the marine refrigeration equipment and the freezer of construction wall, roof heat insulation, composite insulating board have very vast market prospect.
The polystyrene foam product belongs to the intermediate products of processability; Its small investment, turnover is fast, energy consumption is low; It is few to take producers; Belong to the high production project of productive profit, it also possess skills content low, be prone to grasp, characteristics such as the table of equipment number is few, production elasticity strong, reliable product quality, thereby the risk of its project construction is less.
At present, the main step specific as follows of existing EPS board production technology: prefoam, fluidized drying, slaking, moulding, ageing and cutting, wherein; Foaming condition in the pre-expansion process (like quantity of steam, blow pressure, temperature and time etc.) will determine the unit weight of EPS particle; Thereby determine the unit weight of final EPS slab products, and existing pre-expansion process is operated through Artificial Control mainly, promptly mainly through the various prefoam conditions (like quantity of steam, prefoam temperature etc.) in the manual adjustment prefoam equipment; Realize purpose to the unit weight adjusting; But,, make the unit weight control procedure have inaccuracy because manual operation has uncertain and inaccuracy defectives such as (for example operative employee's experiences); Thereby cause the unit weight of EPS board finished product not too accurate easily, be difficult to reach customer requirement.
Therefore, necessaryly provide a kind of new EPS board production technology to solve above-mentioned technical problem.
Summary of the invention
The technical problem that the present invention solved is to provide a kind of EPS board production technology, and it can effectively improve the inaccurate defective of unit weight that manually-operated exists, and improves the accuracy of EPS board finished product unit weight.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of EPS board production technology; Comprise the steps: that the EPS particle is carried out prefoam handles, the EPS particle after the prefoam is carried out fluidized drying processing, maturation process, forming processes and cutting process; It is characterized in that: said EPS board production technology also carries out the processing of weighing after forming processes; The goods that form after this processing of weighing adopts a weighing device to forming processes are weighed; And weighing results fed back to an adjustment type foaming machine, said adjustment type foaming machine judges whether the EPS particle after the said prefoam is carried out foaming treatment once more according to said weighing results.
Further; Be provided with a master controller and a preset value of bulk density in the said adjustment type foaming machine; Receive the weighing results of weighing device when the adjustment type foaming machine after; By said master controller said weighing results is carried out the value of bulk density that computing draws the said goods of weighing, and this value of bulk density and said preset value of bulk density are compared, judge whether the value of bulk density of alleged recasting article is suitable.
Further, when the value of bulk density of the said goods of weighing is higher than said preset value of bulk density, the EPS particle after the said prefoam will get in the said adjustment type foaming machine and carry out foaming treatment once more.
Further, blow pressure, blowing temperature and the foamed time during foaming treatment carried out drawing after the computing according to the difference of weighing between goods value of bulk density and preset value of bulk density by said master controller once more.
Further, after the foaming treatment, the EPS particle is carried out forming processes once more.
Further, it is that the EPS particle that contains blowing agent is put into the prefoam machine that said prefoam is handled, and prefoam temperature in the prefoam machine is increased to more than 80 ℃.
Further, it is with the EPS particle that comes out from the prefoam machine that said fluidized drying is handled, and is placed into and carries out drying in the fluidized drying bed apparatus.
Compared with prior art; EPS board production technology of the present invention is weighed to it behind the EPS sheet metal forming; And weighing results fed back to an adjustment type foaming machine; Whether the unit weight of the EPS plate after being carried out computing and judged moulding by the adjustment type foaming machine suitable, whether need carry out foaming treatment again to the EPS particle after the prefoam, to readjust the unit weight of EPS plate after the moulding, makes that the unit weight of last EPS plate is more accurate.
[description of drawings]
Fig. 1 is the flow chart of EPS board production technology of the present invention.
Fig. 2 moves towards flow chart for the material of EPS board production technology of the present invention.
[specific embodiment]
See also Fig. 1, shown in 2, the present invention provides a kind of production technology of EPS plate, it mainly comprises the steps: prefoam processing, fluidized drying processing, maturation process, forming processes, the processing of weighing, ageing and cutting process, abovementioned steps is specific as follows:
1, prefoam is handled: the EPS particle (being expandable polystyrene particle) that will contain blowing agent is put into the prefoam machine; And be increased to more than 80 ℃ sending out in advance a temperature in the prefoam machine; At this moment; The EPS particle begins to soften, and the blowing agent that is distributed in granule interior is heated gasification and produces pressure, causes the EPS particle to begin to expand and form mutual disconnected abscess.Simultaneously, steam also penetrates in these abscesses, further increased the gross pressure in the abscess, and As time goes on, steam infiltrates constantly, and gross pressure also constantly increases, and makes the volume of EPS particle also constantly increase.Said blowing agent is a pentane, divides pentane and isopentane.Parameters such as said prefoam machine scalable temperature, pressure and quantity of steam; Control the degrees of expansion of EPS particle; Control the density of EPS particle with this; This density determines the unit weight behind the EPS sheet metal forming the most at last, common parameters such as the pre-set as required associated temperature of prefoam chance, quantity of steam, the value of bulk density of EPS finished product that like this can be through calculating final output.
2, fluidized drying is handled: the EPS particle that will come out from the prefoam machine; Be placed into and carry out force drying in the fluidized drying bed apparatus, said detailed process is that the EPS particle gets into fluidizing drying bed from charging aperture; The fluidizing drying bed hot blast that is blown into is by the air blast air draught; Through behind the steam heater through spacer screen be blown into fluidizing drying bed in, thereby contact with the EPS particle, the EPS particle advances on dry limit, the promotion low suspension of hot blast and materials flow limit in air-flow; Fall into vibratory sieve, qualified particle is imported the slaking feed bin after sieving.The EPS particle of said fluidized drying bed apparatus after to prefoam can play the effect of rapid oven dry and dehydration; And can prolong the time of blowing agent by the gaseous state liquefy; Make hot-air to infiltrate fast in the abscess; Reduce the inside and outside differential pressure of abscess, simultaneously, also being convenient to the EPS particle can fast shaping and the carrying out of follow-up maturing process.
3, maturation process: after the prefoam; Because produce vacuum in the EPS particle, the EPS particle surface has moisture, does not meet the moulding requirement usually; Therefore; Maturing process is that air is infiltrated in the EPS particle and makes EPS particle surface moisture drying cooling, and said maturing process carries out in the slaking feed bin, finally obtains the prefoaming polystyrene particles after the slaking.
4, forming processes: will be the EPS prefoam particle of slaking drop in the sheet material machine, heat through steam, about 20-60 in the time of second; Air has little time to overflow in the abscess, produces pressure behind the expanded by heating, and the summation of pressure is greater than the steam pressure that is heated outside the particle; This moment, polymer was softening; Pressure in the abscess of blowing agent vaporization back is greater than the pressure of outside, and particle expands again once again, and turgor particle gap and form monoblock; Thereby form the foam plastic product identical, i.e. EPS slab products with mold shape.
5, the processing of weighing: the EPS slab products after utilizing a weighing device to aforementioned moulding is weighed; Then the actual result who weighs is sent to an adjustment type foaming machine, whether the EPS particle after the said prefoam is foamed again by said adjustment type foaming machine decision.
Specifically; Said adjustment type foaming machine compares according to the actual gravimetric value of weighing and presetting that weighing device records; According to comparative result and difference between the two; Whether the EPS particle after the said prefoam (be the granules of polystyrene of prefoam, join shown in Figure 2) is carried out one step foaming again by said adjustment type foaming machine decision.Wherein, Be provided with the value of bulk density that a master controller and is preset in the said adjustable foaming machine, said master controller carries out computing according to the actual weighing results of said weighing device, calculates corresponding value of bulk density; Then this value of bulk density and said preset value of bulk density are compared; Whether the unit weight (density) of judging the EPS particle after original prefoam according to difference between the two is suitable, if unit weight is suitable, explains then that original prefoam is handled to meet the demands; Need not to foam again, can proceed processed such as ageing, cutting; If unit weight is improper; EPS particle after the then said prefoam will get in the said adjustment type foaming machine; Calculate the foaming condition again such as required blow pressure, blowing temperature and foamed time that foams again by the main controller in the adjustment type foaming machine according to said relatively difference; Under the foaming condition EPS particle is carried out foaming treatment once more again at this then, the EPS particle is adjusted to required unit weight (density), to remedy the unit weight error after original prefoam machine foams; And then entering sheet material machine processing and forming; Like this EPS particle through the foaming of prefoam machine, and the foaming once more of adjustment type foaming machine after, make that the EPS plate unit weight of final actual output is more accurate, error is littler.
6, ageing and cutting: the EPS plate of moulding is placed drying chamber carry out dry maintenance, accomplish the EPS plate of ageing process, on the cutting machine of charged heated filament, cut by required size and shape.
In sum; EPS board production technology of the present invention is through (after being sheet material machined moulding) after the molding procedure, adds table scale refitting and puts the EPS slab products after the moulding is weighed, and actual weighing results is fed back to an adjustment type foaming machine; Calculate according to weighing results by said adjustment type foaming machine; And judge whether to be necessary the EPS particle after the prefoam is carried out one step foaming again, to be adjusted to needed unit weight, make final products unit weight more accurate.
The above; It only is most preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction, any those of ordinary skill in the art are not breaking away under the technical scheme scope situation of the present invention; Utilize the method content of above-mentioned announcement that technical scheme of the present invention is made many possible changes and modification, all belong to the scope of claims protection.

Claims (5)

1. EPS board production technology; Comprise the steps: that the EPS particle is carried out prefoam handles, the EPS particle after the prefoam is carried out fluidized drying processing, maturation process, forming processes and cutting process; It is characterized in that: said EPS board production technology also carries out the processing of weighing after forming processes; The goods that form after this processing of weighing adopts a weighing device to forming processes are weighed; And weighing results fed back to an adjustment type foaming machine, said adjustment type foaming machine judges whether the EPS particle after the said prefoam is carried out foaming treatment once more according to said weighing results.
2. EPS board production technology according to claim 1; It is characterized in that: be provided with a master controller and a preset value of bulk density in the said adjustment type foaming machine; Receive the weighing results of weighing device when the adjustment type foaming machine after; By said master controller said weighing results is carried out the value of bulk density that computing draws the said goods of weighing, and this value of bulk density and said preset value of bulk density are compared, judge whether the value of bulk density of alleged recasting article is suitable.
3. EPS board production technology according to claim 2 is characterized in that: when the value of bulk density of the said goods of weighing is higher than said preset value of bulk density, the EPS particle after the said prefoam will get in the said adjustment type foaming machine and carry out foaming treatment once more.
4. EPS board production technology according to claim 3 is characterized in that: blow pressure, blowing temperature and the foamed time during foaming treatment carried out drawing after the computing according to the difference of weighing between goods value of bulk density and preset value of bulk density by said master controller once more.
5. EPS board production technology according to claim 4 is characterized in that: after the foaming treatment, the EPS particle is carried out forming processes once more.
CN 201210313574 2012-08-30 2012-08-30 Production process of EPS (Expanded Polystyrene) plate Pending CN102825716A (en)

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Application Number Priority Date Filing Date Title
CN 201210313574 CN102825716A (en) 2012-08-30 2012-08-30 Production process of EPS (Expanded Polystyrene) plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103122117A (en) * 2013-01-28 2013-05-29 胡君 Manufacturing method of improved EPS (expandable polystyrene) board
CN104151730A (en) * 2014-08-22 2014-11-19 山东圣泉化工股份有限公司 Modified polystyrene board and preparation method thereof
CN104790586A (en) * 2015-04-29 2015-07-22 东营海容新材料有限公司 Production process for light-weight steel floorslab
CN104843152A (en) * 2015-05-27 2015-08-19 傅嘉宁 Method and ship for stopping flooding of ship cabin
CN106863685A (en) * 2017-03-01 2017-06-20 芜湖美威包装品有限公司 A kind of fire-retardant eps foam production technology of heavy duty detergent
CN106881777A (en) * 2017-02-24 2017-06-23 芜湖市伟华泡塑有限公司 A kind of EPS packaging expanded polystyrenes manufacture craft
CN109624178A (en) * 2018-11-26 2019-04-16 界首市琦伟纸塑包装材料厂 A kind of expandable polystyrene continuous process system
CN110587895A (en) * 2019-10-22 2019-12-20 东港市华瑞彩钢有限公司 Production process of heat-insulation penetration plate and heat-insulation penetration plate

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103122117A (en) * 2013-01-28 2013-05-29 胡君 Manufacturing method of improved EPS (expandable polystyrene) board
CN104151730A (en) * 2014-08-22 2014-11-19 山东圣泉化工股份有限公司 Modified polystyrene board and preparation method thereof
CN104151730B (en) * 2014-08-22 2017-06-16 山东圣泉新材料股份有限公司 A kind of modified polyphenyl plate and preparation method thereof
CN104790586A (en) * 2015-04-29 2015-07-22 东营海容新材料有限公司 Production process for light-weight steel floorslab
CN104843152A (en) * 2015-05-27 2015-08-19 傅嘉宁 Method and ship for stopping flooding of ship cabin
CN106881777A (en) * 2017-02-24 2017-06-23 芜湖市伟华泡塑有限公司 A kind of EPS packaging expanded polystyrenes manufacture craft
CN106863685A (en) * 2017-03-01 2017-06-20 芜湖美威包装品有限公司 A kind of fire-retardant eps foam production technology of heavy duty detergent
CN109624178A (en) * 2018-11-26 2019-04-16 界首市琦伟纸塑包装材料厂 A kind of expandable polystyrene continuous process system
CN110587895A (en) * 2019-10-22 2019-12-20 东港市华瑞彩钢有限公司 Production process of heat-insulation penetration plate and heat-insulation penetration plate

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EPS Plate Complete Set of Machinery