CN106335195A - PVC floorboard manufacturing system and PVC floorboard manufacturing method - Google Patents

PVC floorboard manufacturing system and PVC floorboard manufacturing method Download PDF

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Publication number
CN106335195A
CN106335195A CN201610816811.8A CN201610816811A CN106335195A CN 106335195 A CN106335195 A CN 106335195A CN 201610816811 A CN201610816811 A CN 201610816811A CN 106335195 A CN106335195 A CN 106335195A
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CN
China
Prior art keywords
pvc
pvc floor
machine
floor
banbury
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
CN201610816811.8A
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Chinese (zh)
Inventor
谭建明
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Foshan Win Technology Co Ltd
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Foshan Win Technology Co Ltd
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Priority to CN201610816811.8A priority Critical patent/CN106335195A/en
Publication of CN106335195A publication Critical patent/CN106335195A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00Producing flat articles, e.g. films or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00Conditioning or physical treatment of the material to be shaped
    • B29B13/10Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06Homopolymers or copolymers of vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Floor Finish (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a PVC floorboard manufacturing system. The PVC floorboard manufacturing system comprises a banbury mixer, a diffusion machine, a refining treatment machine, an extruding machine, a calender and post-treatment equipment, and is characterized in that the banbury mixer, the diffusion machine, the refining treatment machine, the extruding machine, the calender and the post-treatment equipment are connected in sequence, wherein the banbury mixer plasticizes PVC floorboard raw materials, the diffusion machine makes the plasticized raw materials into particles, the refining treatment machine further refines the raw material particles, the refined raw material particles are extruded into the calender through the extruding machine and made into PVC floorboards, and the post-treatment equipment conducts deep processing on the manufactured PVC floorboards. Meanwhile, the invention provides a method for manufacturing the PVC floorboards through the system. The PVC floorboard manufacturing system formed by connecting the banbury mixer, the diffusion machine, a grinding machine, the extruding machine, the calender and the post-treatment equipment in sequence is adopted for manufacturing the PVC floorboards, higher economical efficiency and environmental friendliness are achieved in the PVC floorboard manufacturing process, and technological difficulty and manufacturing cost are reduced.

Description

A kind of pvc floor preparation system and pvc floor preparation method
Technical field
The present invention relates to pvc technical field of floor is and in particular to a kind of pvc floor preparation system and apply this system system The method on standby pvc floor.
Background technology
Pvc floor is a kind of light body floor decorative material, refers to the floor producing using pvc material, specifically refers to With polrvinyl chloride and its copolymer resinses as primary raw material, add the auxiliary ingredients such as filler, plasticizer, stabilizer, coloring agent, in piece On shape continuous base material, using calendering or coating processes, the floor that basic or extruding produces.Pvc floor has outward appearance Light is attractive in appearance, wearability is good, stain resistance and the good feature of non-skid property.And pvc floor raw material sources are extensively, can weigh simultaneously Multiple utilization, is a kind of floor having practicality and economy concurrently.
Prepared in the technical process on pvc floor in prior art using calendering technology, the increase of pvc floor thick-ness is to utilize The preparation of pvc raw material MULTILAYER COMPOSITE.When the pvc thickness degree produced is less than 0.2mm, its surface is very smooth, and not Bubble can be produced, once with the increase of pvc thickness degree, its surface smoothness just worse and worse, surface blistering get more and more, one As 1mm thickness be pvc layer thickness limit, concavo-convex excessive more than the pvc layer surface of 1mm, almost there is no practicality.Existing In order to make the pvc floor that thickness is more than 1mm in technology, often using make-up machine, 2 or multi-disc pvc layer are carried out multiple Close, carry out compacting using adhesive and make composite material, obtain required thickness.However, by the way of compound, on the one hand Production cost can be led to be greatly improved, on the other hand, the compound pvc floor prepared is easily Texturized, and resistance to compression degree is also non- Constant.
Content of the invention
The invention provides the method solving above-mentioned technical problem, the invention provides one kind can be prepared more than 1mm The system on the pvc floor of thickness, additionally provides a kind of method being prepared pvc floor using this system simultaneously.
The technical problem to be solved is achieved by the following technical programs:
In the present invention provide pvc floor preparation system, including banbury, diffusion machine, thinning processor, extruder, calender, Equipment for after-treatment, wherein banbury, diffusion machine, thinning processor, extruder, calender, equipment for after-treatment are sequentially connected, wherein Raw material after plastifying is made granule by the board raw material plasticizing of pvc ground, diffusion machine by banbury, and feed particles are carried out by thinning processor Further refine, the feed particles extrusion after extruder will refine is pressed into pvc floor in flattener, and equipment for after-treatment will The pvc floor prepared carries out deep processing.
For the dust pollution question during controlling pvc floor preparation system to use further, banbury, diffusion machine, thin It is additionally provided with dust discharge pipeline and blower fan and delivers to the flying dust producing in the course of processing in cleaner unit above change datatron, calender and carry out Process.Using said structure setting, pollution problem that can be in the production process of effective control pvc floor to environment, can be effectively improved Production operation environment.
Wherein, described equipment for after-treatment includes compounding machine, transporting equipment and the shearing equipment of veneer and embossing.Veneer refers to The pvc floor surface patch system preparing is ornamental or/and protectiveness surface, embossing be then suppress in pvc floor surface pre- If decorative pattern, make good looking appearance.
The method that a kind of pvc floor preparation system in utilization present invention prepares pvc floor is also provided in the present invention, including Following steps:
Step one, pvc master batch, calcium bicarbonate, soybean oil, quartz sand are moulded according to input banbury after formula proportion mixing Change, wherein pvc accounts for weight portion 35-45 part, calcium bicarbonate accounts for weight portion 20-30 part, soybean oil accounts for weight portion 2-4 part, quartz sand Account for weight portion 20-30 part.
In order to lift the thickness on pvc floor of the present invention, maintain the performance on pvc floor, the present inventor is in formula simultaneously Raw material and proportioning are studied, and after the contrast scheme of plurality of raw materials is designed and screens, have formulated such scheme, The plasticity on pvc floor can be further enhanced using calcium bicarbonate, soybean oil, quartz sand as dispensing, make the ground thickness of slab that calendering goes out Degree increases, it is emphasized that raw materials quality fraction need to strictly be controlled just making the pvc floor good stability of output, wherein Pvc master batch, calcium bicarbonate, soybean oil, quartz sand weight part ratio can one of preferably for 40:25:3:25.
Calcium bicarbonate raw material particle size used in step one is less than 0.074 μm, and quartz sand is less than 0.5 μm, using above-mentioned Feed particles granularity can effectively calcium bicarbonate and quartz sand be dispersed in pvc master batch, and soybean oil is in formula as viscous Knot agent is used with plasticizer, and compared with traditional industrial plasticizer, soybean oil is more environmentally friendly, can make pvc floor There is more preferable aging resistance, anti-extractibility, and intralaminar part is more tight, plasticity is good can to make pvc ground.
Due to the difference of material choice, the compounding conditions of banbury need to be set according to the requirement of different-thickness, typically , as 85-105 DEG C, mixing time is 8-12 minute, energy within the scope of this temperature and mixing time to set melting temperature in banbury So that pvc raw material is fully plastified with other added materials, be unlikely to aging again, Ram Piston Pressure of Mixer is controlled to as 0.25- In the range of 0.40mpa, control mixing process that can be more precise and stable.
Step 2, the raw material after plastifying in step one is put in diffusion machine, until the feed particles after plasticizing are less than 10mm.
Step 3, the feed particles handled well in step 2 are put in thinning processor, make feed particles be less than pvc ground The thickness of plate.
Using two steps, feed particles are refined into suitable molecule by coarse granule in the present invention, compared with existing In technology frequently with a step crush method, in the present invention first step first by feed particles control be less than 10mm, now need not make former Material granule is too small, and on the one hand lifting crushing efficiency, on the other hand makes feed particles more uniform, favourable to subsequent process steps; Step 3 is to carry out further micronization processes to feed particles, step 2 processing after on the basis of can be effectively by feed particles Uniformly refine further, control feed particles to be less than pvc floor thick-ness in this step, excessively refinement is unfavorable for pvc floor Molding.By two broken refinements, raw material can be prepared into homodisperse granule, be conducive to sending in subsequent step and press Prolong, make the pvc floor surface even uniform prepared.
Step 4, the feed particles handled well is put in extruder, by filtering expressing technique, by raw material in step 3 Extrude the compacting then carrying out pvc floor to flattener;Extruder substrate temperature is advisable for 160-180 DEG C.
Step 5, the pvc floor in step 4 is carried out post processing.Described post processing may include veneer, embossing, transport and The steps such as shearing, such as paste overcoat processed, decorative layer in the pvc floor surface made, or suppress decorative pattern attractive in appearance, Cutting can be carried out according to industry requirement, such as 18 × 18 inches, 6 × 36 inches, 9 × 36 inches, 8 × 36 inches, 24 × 24 Inch, 4 × 36 inches, 36 × 36 inches, the conventional series such as 12 × 12 inches.
The present invention also provides a kind of pvc floor preparing using the preparation system in the present invention and preparation method, institute Stating pvc floor thick-ness is 1-10mm.
The invention has the following beneficial effects:
1st, the present invention passes through composition and the composition on rational proportion pvc floor, so that the plasticity on pvc floor, consistency is significantly carried Rise, enable the thickness on pvc floor to reach more than 1mm.
2nd, the present invention is sequentially connected and is formed using banbury, diffusion machine, material grinder, extruder, calender, equipment for after-treatment Pvc floor preparation system carry out the preparation on pvc floor, make the more economical environmental protection of pvc floor preparation process, reduce technology difficulty And preparation cost.
3rd, the thickness that the pvc floor prepared in the present invention not only breaches traditional pvc lamina limits, and prepares The pvc floor surface obtaining is smooth, wear resistance and corrosion resistance is good.
Brief description
Fig. 1 is the schematic diagram of pvc floor preparation system in the present invention.
Specific embodiment
By the following examples the scheme providing in the present invention is further detailed.
A kind of pvc floor preparation system providing in embodiment as shown in Figure 1, including banbury 1, diffusion machine 2, refines Datatron 3, extruder 4, calender 5, compounding machine 6 and roller 7 are sequentially connected, and wherein pvc ground board raw material is moulded by banbury 1 Change, the raw material after plastifying is made granule by diffusion machine 2, feed particles are further refined by thinning processor 3, extruder Feed particles extrusion after refinement is pressed into pvc floor in flattener 5 by 4, and compounding machine 6 is in the pvd floor surface preparing Carry out veneer and/or embossing, after the completion of preparation, pvc floor is taken out of along roller 7, also can set, after roller 7, the equipment of cutting out and be used for Cutting pvc floor, transporting equipment are used for transporting pvc ground board finished product.
It is additionally provided with dust discharge pipeline above banbury 1, diffusion machine 2, thinning processor 3 and calender 5 and blower fan 8 will be processed The flying dust producing in journey is delivered in dust removal machine and is processed, to safeguard the environmental health in production process.Optional in the present embodiment With the whirlwind nebulization dust device of good dedusting effect, 1.5-3kw selected by blower fan.
The method and step preparing pvc floor using above-mentioned pvc floor preparation system is as follows:
Step one: pvc master batch, calcium bicarbonate, soybean oil, quartz sand are moulded according to input banbury after formula proportion mixing Change, wherein each ingredients weight parts are as follows:
Used in it, calcium bicarbonate raw material particle size scope is 0.02-0.05 μm, and quartz sand size scope is 0.1-0.3 μm.? In the preparation process of embodiment, also can add environment-friendly plasticizer material in right amount in raw material increases the soffening of raw material further Can, such as dop(dioctyl phthalate).
The banbury that capacity is 75l is adopted, in banbury, melting temperature is 90 DEG C, mixing time is 10 points in embodiment Clock, ram piston pressure is 0.3mpa.
Step 2: the raw material after plastifying in step one is put in diffusion machine 2, until the feed particles after plasticizing are less than 10mm, it is contemplated that keeping the uniformity of embodiment, feed particles is processed to particle diameter as 5mm.Diffusion machine Main Function it One is to make all of raw material differentiation not conglomeration, adopts working speed to be 300-500r/min in an embodiment.
Step 3: the feed particles handled well in step 2 are put in thinning processor 3, makes feed particles be less than pvc The thickness on floor.Thinning processor can adopt plastic grinder, and the material after diffusion machine is processed further is refined, work Make rotating speed and can adopt 400-600 r/min.
Step 4: the feed particles handled well in step 3 are put in extruder 4, extruder substrate temperature is 170 DEG C, By filtering expressing technique, raw material is extruded to flattener 5, then carries out the compacting on pvc floor.Flattener operating temperature is selected It is advisable for 120-135 DEG C, each work wheel is driven with 2.2kw motor, and control highest linear speed is 5m/min.
Step 5: the pvc floor in step 4 is carried out veneer and/or embossing, after the completion of preparation, pvc floor is along roller 7 take out of.
Raw material in above-described embodiment is prepared into respectively the pvc floor of 0.2mm, 0.6mm, 1mm, 3mm, 5mm, 10mm, Its apparent condition records as shown in the table.
By embodiment as can be seen that not only breaching traditional pvc using the pvc floor that the method in the present invention is prepared The thickness of lamina limits, and the pvc floor surface preparing is smooth, wear resistance and corrosion resistance is good.Meanwhile, contrast is implemented In example preparation system and traditional pvc flooring method, traditional pvc floor makes per tour needs 16 people, and uses this Preparation system per tour in bright only needs 7 people, and using the preparation system in embodiment, the power consumption in preparation technology is also big Width reduces, and cost reduces.
Last it should be noted that above example is only in order to illustrate the technical scheme of the embodiment of the present invention rather than it is entered Row limits, although being described in detail to the embodiment of the present invention with reference to preferred embodiment, those of ordinary skill in the art It should be understood that still can modify or equivalent to the technical scheme of the embodiment of the present invention, and these are changed or wait Also amended technical scheme can not be made to depart from the scope of embodiment of the present invention technical scheme with replacement.

Claims (10)

1. a kind of pvc floor preparation system, sets including banbury, diffusion machine, thinning processor, extruder, calender, post processing Standby it is characterised in that: banbury, diffusion machine, thinning processor, extruder, calender, equipment for after-treatment are sequentially connected, wherein Raw material after plastifying is made granule by the board raw material plasticizing of pvc ground, diffusion machine by banbury, and feed particles are carried out by thinning processor Further refine, the feed particles extrusion after extruder will refine is pressed into pvc floor in flattener, and equipment for after-treatment will The pvc floor prepared carries out deep processing.
2. pvc floor preparation system as claimed in claim 1 it is characterised in that: banbury, diffusion machine, thinning processor, calendering It is additionally provided with dust discharge pipeline and blower fan above machine and delivers to the flying dust producing in the course of processing in cleaner unit and processed.
3. pvc floor preparation system as claimed in claim 1 it is characterised in that: described equipment for after-treatment includes veneer and embossing Compounding machine, transporting equipment and shearing equipment.
4. a kind of method preparing pvc floor using described pvc floor as arbitrary in claim 1-3 preparation system, its feature exists In comprising the steps:
Step one, pvc master batch, calcium bicarbonate, soybean oil, quartz sand are moulded according to input banbury after formula proportion mixing Change, wherein pvc accounts for weight portion 35-45 part, calcium bicarbonate accounts for weight portion 20-30 part, soybean oil accounts for weight portion 2-4 part, quartz sand Account for weight portion 20-30 part;
Step 2, the raw material after plastifying in step one is put in diffusion machine, until the feed particles after plasticizing are less than 10mm;
Step 3, the feed particles handled well is put in thinning processor, make feed particles be less than pvc floor in step 2 Thickness;
Step 4, the feed particles handled well is put in extruder, by filtering expressing technique, raw material is extruded in step 3 To flattener, then carry out the compacting on pvc floor;
Step 5, the pvc floor in step 4 is carried out post processing.
5. pvc floor as claimed in claim 4 preparation method it is characterised in that: pvc master batch in step one, calcium bicarbonate, big Oleum Glycines, the weight part ratio of quartz sand are 40:25:3:25.
6. pvc floor as claimed in claim 4 preparation method it is characterised in that: the calcium bicarbonate used in step one is former Material particle diameter is less than 0.074 μm, and quartz sand is less than 0.5 μm.
7. pvc floor as claimed in claim 4 preparation method it is characterised in that: in step one, in banbury, melting temperature is 85-105 DEG C, mixing time is 8-12 minute, and ram piston pressure is 0.25-0.40mpa.
8. pvc floor as claimed in claim 4 preparation method it is characterised in that: in step 4, extruder substrate temperature is 160-180℃.
9. a kind of pvc floor it is characterised in that: the preparation method on described pvc floor is as described in claim 4-8.
10. pvc floor as claimed in claim 9 it is characterised in that: described pvc floor thick-ness be 1-10mm.
CN201610816811.8A 2016-09-12 2016-09-12 PVC floorboard manufacturing system and PVC floorboard manufacturing method Pending CN106335195A (en)

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Application Number Priority Date Filing Date Title
CN201610816811.8A CN106335195A (en) 2016-09-12 2016-09-12 PVC floorboard manufacturing system and PVC floorboard manufacturing method

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Application Number Priority Date Filing Date Title
CN201610816811.8A CN106335195A (en) 2016-09-12 2016-09-12 PVC floorboard manufacturing system and PVC floorboard manufacturing method

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CN106335195A true CN106335195A (en) 2017-01-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108327371A (en) * 2018-03-16 2018-07-27 佛山市利丰日用品有限公司 A kind of composite PVC table top and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105086232A (en) * 2015-08-03 2015-11-25 江苏锐升新材料有限公司 PVC base material, manufacturing method thereof and PVC composite board
CN105885306A (en) * 2016-06-30 2016-08-24 芜湖三刀材料科技有限公司 PVC (polyvinyl chloride) calcium-plastic flooring and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105086232A (en) * 2015-08-03 2015-11-25 江苏锐升新材料有限公司 PVC base material, manufacturing method thereof and PVC composite board
CN105885306A (en) * 2016-06-30 2016-08-24 芜湖三刀材料科技有限公司 PVC (polyvinyl chloride) calcium-plastic flooring and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张广成等: "《塑料成型加工技术》", 31 January 2016, 西北工业大学出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108327371A (en) * 2018-03-16 2018-07-27 佛山市利丰日用品有限公司 A kind of composite PVC table top and preparation method thereof

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Application publication date: 20170118