CN107972244B - A kind of manufacturing method of PVC stone molding base - Google Patents
A kind of manufacturing method of PVC stone molding base Download PDFInfo
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- CN107972244B CN107972244B CN201710945758.6A CN201710945758A CN107972244B CN 107972244 B CN107972244 B CN 107972244B CN 201710945758 A CN201710945758 A CN 201710945758A CN 107972244 B CN107972244 B CN 107972244B
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- molten liquid
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- stomata
- molding die
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Classifications
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
- B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
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- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of manufacturing methods of PVC stone molding base, belong to PVC stone plastic floor field.For the present invention the following steps are included: in step a, fusing obtains primary molten liquid；In step b, primary molten liquid is drawn into a-road-through air passing hole generating mechanism, obtains secondary molten liquid；In step c, the secondary molten liquid prepared in step b is passed through main extruder, the secondary molten liquid in it is squeezed out and is pressed into the main-inlet of molding die mechanism by main extruder；The primary molten liquid prepared in step a extraction is passed through time extruder all the way, the primary molten liquid in it is squeezed out and is pressed into the secondary entrance of molding die mechanism by secondary extruder；In step d, spraying cooling obtains PVC stone molding base finished product.It is an object of the invention to overcome the higher deficiency of preparation cost using existing PVC stone molding base, the usage amount of raw material is effectively reduced, so that the preparation cost of PVC stone molding base is greatly reduced, improves the market competitiveness of PVC stone plastic floor.
Description
Technical field
The present invention relates to PVC stone plastic floors, more specifically to a kind of manufacturing method of PVC stone molding base.
Background technique
With social development, various floor decorative materials and decorative product are continuously emerged.Everybody has more familiar product: porcelain
Brick, flooring laminate, solid wooden floor board, compoiste wood floor etc., application range are related to the every aspect of our lives.
Wherein, ceramic tile wearability is good, waterproof, moisture-proof, anticorrosion, also has certain pressure-resistant performance, quality is hard, selection
Convenient, long service life is widely portable to various indoor environments, deep to be liked by the majority of consumers, the range used
Most extensively.Flooring laminate is laid with simple, scouring conveniently, and light-weight, small in size, using flexible can be cut randomly, ring as needed
Border is adaptable.And solid wooden floor board or compoiste wood floor, since based on wooden structure, elasticity is good, comfortable foot feeling, nontoxic nothing
Taste is the ornament materials of bedroom earth's surface first choice using more satisfactory in room.
Although above-mentioned decorative product advantages, have his own strong points, respectively also there is shortcoming.Ceramic tile due to hardness height,
Smooth surface after splashing water, is easier to make one to slip, particularly hazardous for the elderly.In recent years, use scope is by one
Fixing is rung.Flooring laminate, intensity is low, toughness is big, easy to produce static electricity, in the case where long-time squeezes, will form gauffer or deformation, meanwhile,
Also easy to aging, fracture, is unfavorable for being used for a long time.Solid wooden floor board or compoiste wood floor need to be unfavorable for ring using a large amount of timber
Protect, floor surface poor impact resistance, cannot well waterproof, moisture-proof, anticorrosion, daily maintenance larger workload, later maintenance
And higher operating costs.
For above situation, people start to research and develop some new substitute products, such as stone plastic floor, stone plastic floor are also known as it
Floor tile is moulded for stone, regular title is " PVC sheet floor ", is a kind of high-quality, high-tech new terrestrial ornament materials, adopts
Constitute the solid base of high density, high microsteping reticular structure with natural marble powder, surface coated with superpower wear-resistant macromolecule
PVC wearing layer is process through procedures up to a hundred.Product lines beauty true to nature, superpower wear-resistant, surface-brightening can be rated as without cunning
The model of 21st century high-tech new material.
Existing PVC stone plastic floor is mainly formed by decorative layer, PVC stone molding base and balance layer hot pressing, main
Component part is PVC stone molding base, and therefore, the prime cost of PVC stone plastic floor is the preparation of PVC stone molding base.Existing skill
Technology in art about the preparation of PVC stone molding base has a large amount of related patents and discloses, such as patent publication No.:
CN101306927A, publication date: on November 19th, 2008, invention and created name are as follows: PVC stone molding base and its application, this application
Case discloses a kind of PVC stone molding base, is mainly mixed by following composition according to mass percentage: stone powder: 65~
90%, polyethylene (PVC): 10~25%, adhesive: 3~8%, after mixing, it is put into curing molding in mold, this application
Case is raw material with cheap stone powder, polyethylene, reuses adhesive, after mixing, is put into curing molding in mold,
PVC stone molding base can be obtained, preparation process is simple, and no pollution to the environment is with a wide range of applications.
How but with the intensified competition of PVC stone plastic floor industry, PVC is further decreased on the basis of existing technology
The preparation cost of stone molding base is the technical problem of urgent need to resolve in the prior art.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome the higher deficiency of preparation cost using existing PVC stone molding base, one is provided
The manufacturing method of kind PVC stone molding base, effectively reduces the usage amount of raw material, so that the preparation cost of PVC stone molding base is significantly
Decline improves the market competitiveness of PVC stone plastic floor.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
The manufacturing method of PVC stone molding base of the invention, comprising the following steps:
Step a: raw material mixing and heating；
Step b: stomata generates；
Step c: extrusion molding；
Step d: it is cooled and shaped.
As further improvement of the present invention, in step a, by the raw material of PVC stone molding base and additive by formula
Batch mixer is added in ratio, is mixed and heats in batch mixer, and fusing obtains primary molten liquid；
In step b, the primary molten liquid prepared in step a is drawn into a-road-through air passing hole generating mechanism, is obtained secondary molten
Melt liquid；
In step c, the secondary molten liquid prepared in step b is passed through main extruder, main extruder melts the secondary in it
Melt the main-inlet that liquid squeezes out and is pressed into molding die mechanism；
The primary molten liquid prepared in step a extraction is passed through time extruder all the way, secondary extruder melts the primary in it
Melt the secondary entrance that liquid squeezes out and is pressed into molding die mechanism；
In step d, the spraying cooling liquid on the outside of the fusion section of molding die mechanism obtains PVC stone molding base finished product.
As further improvement of the present invention, the stomata generating mechanism includes stomata generating mechanism ontology, the stomata
Generating mechanism ontology is a cylindrical channel, and one end of stomata generating mechanism ontology is the import of stomata generating mechanism, and stomata generates
The other end of mechanism body is the outlet of stomata generating mechanism；
The stomata generating mechanism along its length on be provided with several groups snorkel, every group of snorkel includes several
The snorkel being inserted into inside stomata generating mechanism, all snorkels on every group of snorkel are circumferential etc. along stomata generating mechanism
Spacing distribution, and same group of its end for being inserted into all snorkels in stomata generating mechanism of snorkel is located at and is generated with stomata
On the same concentric circles centered on mechanism central axes；Described its diameter of concentric circles along the length direction of stomata generating mechanism
Increasing or decreasing；
The end that all snorkels are located at outside stomata generating mechanism, which is collected, to be communicated on inlet manifold, and inlet manifold passes through
On-off valve is connected to air storage chamber；The air storage chamber is connected to by isolating valve with air pump.
As further improvement of the present invention, the snorkel includes snorkel body and end chambers, the end
Chamber is the spherical shell for being connected to snorkel body end, and through-hole is evenly equipped on the spherical shell, and the end chambers are located at stomata generation
It is in-house.
As further improvement of the present invention, the molding die mechanism includes distance piece and fusion section；
The distance piece includes molding die and covers on the surface mold of molding die or more two sides, the shaping mould respectively
The secondary molten liquid squeezed into it for being processed into the middle layer of PVC stone molding base by tool, and the surface mold will be for that will squeeze into
Primary molten liquid in it is processed into the upper and lower surfaces layer of PVC stone molding base；The import of the molding die is main-inlet, at
The outlet of pattern tool is primary outlet；The import of the surface mold is time entrance, and the outlet of surface mold is time outlet；
The outer edge of described outlet is equipped with the flanging to distance piece centerline direction deviation, the import of the fusion section
It is connect with the flanging.
As further improvement of the present invention, the aperture of through-hole is 0.10~0.25mm on the spherical shell；The on-off
Valve and the isolating valve are electric opening and closing valve；Pressure gauge is installed in the air storage chamber.
As further improvement of the present invention, the nitrogen of 0.3~3MPa is filled in step b in control air storage chamber.
As further improvement of the present invention, in step b, the on-off valve frequency per second that operation is opened and closed is adjusted, with
So that the stomata containing 15%~25% volume in the secondary molten liquid monomer volume of preparation.
As further improvement of the present invention, the folder of flanging and distance piece center line that the outer edge of secondary outlet is equipped with
Angle is 3 °~8 °.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) it in the present invention, is moulded by the PVC stone that stomata generating mechanism can obtain uniformly distributed a large amount of Minute pores in middle layer
Substrate finished product can be had using this kind of novel technique under the premise of guaranteeing that PVC stone molding base has certain mechanical strength
Effect reduces the usage amount of raw material, so that the preparation cost of PVC stone molding base is greatly reduced, improves the market of PVC stone plastic floor
Competitiveness；Meanwhile uniformly distributed a large amount of Minute pores can be improved the sound insulation and thermal insulation property of PVC stone molding base, warp in middle layer
Test, compared to traditional PVC stone molding base, its sound insulation of PVC stone molding base and thermal insulation property prepared in the present invention is mentioned
Rise 20% or more.In the specific present invention, the primary molten liquid prepared in step a is drawn into a-road-through air passing hole generating mechanism, just
Grade molten liquid enters in stomata generating mechanism ontology from stomata generating mechanism import, wherein control on-off valve is carried out with certain frequency
Opening and closing operations, on-off valve opening and closing is primary to have nitrogen to spray from upper through-hole, and countless Minute pores are formed in primary molten liquid,
And multiple inside for being evenly arranged on stomata generating mechanism, therefore primary molten liquid is internal uniformly distributed by being formed after stomata generating mechanism
The secondary molten liquid of countless Minute pores；The pressure gauge of real-time measurement gas storage room pressure is installed, when discovery is stored up in air storage chamber
When the indoor pressure of gas is lower than setting value, isolating valve can be automatically turned on using air pump and fill nitrogen into air storage chamber, to maintain to store up
Certain pressure in gas chamber, so that nitrogen impact is passed through stomata after on-off valve is opened every time using the indoor hyperbar of gas storage
Inside generating mechanism, be conducive to a large amount of formation of Minute pores；It wherein, can be by adjusting on-off valve opening and closing frequency per second, storage
The size of gas room pressure, the size of upper air vent aperture, quantity etc. control the size and forming quantity of Minute pores, the present invention
In, the size and number of Minute pores is controlled by adjusting on-off valve opening and closing frequency per second, test of many times proves, control is single
The volume of all Minute pores occupies 15%~25% space in body volume secondary molten liquid, can reduce production cost and
Guarantee to find equalization point between the certain mechanical strength of PVC stone molding base, realizes that comprehensive benefit maximizes.
(2) in the present invention, in order to ensure PVC stone molding base finished product its upper and lower surface finally prepared is smooth
Shape prepares the middle layer and upper and lower surfaces layer of PVC stone molding base by molding die mechanism to adapt to actual use respectively,
Then middle layer and upper and lower surfaces layer effective integration are formed into PVC stone molding base finished product；Wherein, the secondary that will be prepared in step b
Molten liquid is passed through main extruder, and the secondary molten liquid in it is squeezed out and be pressed into the main-inlet of molding die mechanism by main extruder,
It is made into middle layer in molding die, the synchronous primary molten liquid extraction that will be prepared in step a is passed through time extruder all the way, secondary
Primary molten liquid in it is squeezed out and is pressed into the secondary entrance of molding die mechanism by extruder, be made into surface mold it is upper,
Undersurface layer, wherein mold used in traditional PVC stone molding base preparation process can be used in molding die, for producing different knots
The PVC stone molding base of structure type, replaces corresponding molding die；Surface mold is the mould that primary molten liquid is made to plane
Tool；At the same time, since the two sides up and down of molding die are covered with surface mold respectively, in distance piece, middle layer and upper and lower table
The forming process of surface layer separates, therefore, in order to ensure middle layer and upper and lower surfaces layer effectively merge in fusion section
Together, on the outer edge of secondary outlet be equipped with to distance piece centerline direction deviation flanging, by the flanging can by it is upper,
Undersurface layer to the upper and lower surface of middle layer push, while cooperate fusion section on the outside of spraying cooling effect, be conducive to middle layer and
Upper and lower surfaces layer effectively merges in fusion section；In the present invention, control the flanging that is equipped with of outer edge of time outlet be isolated
The angle of section center line is 3 °~8 °, can effectively promote the fusion between middle layer and upper and lower surfaces layer.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of stomata generating mechanism in embodiment 1；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the structural schematic diagram of molding die mechanism in embodiment 1；
Fig. 4 is the flow chart of the manufacturing method of the PVC stone molding base of embodiment 1.
Label declaration in schematic diagram: 1101, stomata generating mechanism exports；1102, stomata generating mechanism import；1103,
Stomata generating mechanism ontology；1104, snorkel；11041, snorkel body；11042, end chambers；1105, on-off valve；
1106, air storage chamber；1107, isolating valve；1108, air pump；1201, main-inlet；1202, secondary entrance；1203, distance piece；1204, secondary
Outlet；1205, primary outlet；1206, section is merged.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Therefore, below to the embodiment of the present invention provided in the accompanying drawings
Detailed description be not intended to limit the range of claimed invention, but be merely representative of selected embodiment of the invention.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
In conjunction with Fig. 1-4, the manufacturing method of the PVC stone molding base of the present embodiment, comprising the following steps:
Step a: raw material mixing and heating；
In step a, batch mixer is added by formula rate in the raw material of PVC stone molding base and additive, in batch mixer
It is mixed and heating, fusing obtains primary molten liquid；
Step b: stomata generates；
In step b, the primary molten liquid prepared in step a is drawn into a-road-through air passing hole generating mechanism, is obtained secondary molten
Melt liquid；
The nitrogen that 0.3~3MPa (3MPa is taken in the present embodiment) is filled in air storage chamber 1106 is controlled in step b；
In step b, adjust the frequency per second that operation is opened and closed of on-off valve 1105 so that preparation secondary molten liquid its
Contain the stomata of 15%~25% (25% is taken in the present embodiment) volume in monomer volume；
Step c: extrusion molding；
In step c, the secondary molten liquid prepared in step b is passed through main extruder, main extruder melts the secondary in it
Melt the main-inlet 1201 that liquid squeezes out and is pressed into molding die mechanism；
The primary molten liquid prepared in step a extraction is passed through time extruder all the way, secondary extruder melts the primary in it
Melt the secondary entrance 1202 that liquid squeezes out and is pressed into molding die mechanism；
Step d: it is cooled and shaped.
In step d, in the 1206 outside spraying cooling liquid of fusion section of molding die mechanism, PVC stone molding base finished product is obtained.
In the present embodiment, stomata generating mechanism includes stomata generating mechanism ontology 1103, the stomata generating mechanism ontology
1103 be a cylindrical channel, and one end of stomata generating mechanism ontology 1103 is stomata generating mechanism import 1102, and stomata generates
The other end of mechanism body 1103 is stomata generating mechanism outlet 1101；If stomata generating mechanism along its length on be provided with
A dry group snorkel 1104, every group of snorkel 1104 include the snorkel 1104 inside several insertion stomata generating mechanism, and every group
The circumferential equidistantly distributed of all snorkels 1104 on snorkel 1104 along stomata generating mechanism, and same group of snorkel
1104 its end for being inserted into all snorkels 1104 in stomata generating mechanism in being with stomata generating mechanism central axes
On the same concentric circles of the heart；Its increasing diameter of concentric circles on the length direction of stomata generating mechanism successively decreases；It is all logical
The end that tracheae 1104 is located at outside stomata generating mechanism, which is collected, to be communicated on inlet manifold, and inlet manifold passes through on-off valve 1105
It is connected to air storage chamber 1106；Air storage chamber 1106 is connected to by isolating valve 1107 with air pump 1108；Wherein: snorkel 1104 includes logical
Tracheae ontology 11041 and end chambers 11042, end chambers 11042 are the spherical shell for being connected to 11041 end of snorkel body,
Through-hole is evenly equipped on the spherical shell, end chambers 11042 are located inside stomata generating mechanism.Wherein: the aperture of through-hole is on spherical shell
0.10~0.25mm；On-off valve 1105 and isolating valve 1107 are electric opening and closing valve；Pressure gauge is installed in air storage chamber 1106.
In the present embodiment, molding die mechanism includes distance piece 1203 and fusion section 1206；Distance piece 1203 includes molding
Mold and the surface mold for covering on molding die or more two sides respectively, molding die is for adding the secondary molten liquid squeezed into it
Work is at the middle layer of PVC stone molding base, and surface mold is for being processed into PVC stone molding base for the primary molten liquid squeezed into it
Upper and lower surfaces layer；The import of molding die is main-inlet 1201, and the outlet of molding die is primary outlet 1205；Surface mold
Import is time entrance 1202, and the outlet of surface mold is time outlet 1204；The outer edge of secondary outlet 1204 is equipped with to distance piece
The import of the flanging of 1203 centerline direction deviations, fusion section 1206 is connect with flanging.Wherein, on the outer edge of secondary outlet 1204
The angle of the flanging and 1203 center line of distance piece that are equipped with is 3 °~8 ° (8 ° are taken in the present embodiment).
In the present embodiment, moulded by the PVC stone that stomata generating mechanism can obtain uniformly distributed a large amount of Minute pores in middle layer
Substrate finished product can be had using this kind of novel technique under the premise of guaranteeing that PVC stone molding base has certain mechanical strength
Effect reduces the usage amount of raw material, so that the preparation cost of PVC stone molding base is greatly reduced, improves the market of PVC stone plastic floor
Competitiveness；Meanwhile uniformly distributed a large amount of Minute pores can be improved the sound insulation and thermal insulation property of PVC stone molding base, warp in middle layer
Test, compared to traditional PVC stone molding base, its sound insulation of PVC stone molding base and thermal insulation property prepared in the present embodiment is equal
Promote 20% or more.In specific the present embodiment, the primary molten liquid prepared in step a is drawn into a-road-through air passing hole and generates machine
Structure, primary molten liquid enters in stomata generating mechanism ontology 1103 from stomata generating mechanism import 1102, wherein controlling on-off valve
1105 are opened and closed operation with certain frequency, and on-off valve 1105, which is opened and closed, once has nitrogen from the through-hole in end chambers 11042
It sprays, forms countless Minute pores in primary molten liquid, and multiple end chambers 11042 are evenly arranged on the interior of stomata generating mechanism
Portion, therefore primary molten liquid is by being the secondary molten liquid for forming internal uniformly distributed countless Minute pores after stomata generating mechanism；Storage
The pressure gauge of pressure in real-time measurement air storage chamber 1106 is installed, when the pressure in discovery air storage chamber 1106 is lower than in gas chamber 1106
When setting value, isolating valve 1107 can be automatically turned on using air pump 1108 and fill nitrogen into air storage chamber 1106, to maintain air storage chamber
Certain pressure in 1106, to be impacted nitrogen after on-off valve 1105 is opened every time using the hyperbar in air storage chamber 1106
It is passed through inside stomata generating mechanism, is conducive to a large amount of formation of Minute pores；It wherein, can be per second by adjusting on-off valve 1105
Size, quantity of air vent aperture etc. are micro- to control in the size, end chambers 11042 of air pressure in opening and closing frequency, air storage chamber 1106
The size and forming quantity of spilehole, it is small to control by adjusting the opening and closing frequency per second of on-off valve 1105 in the present embodiment
The size and number of stomata, test of many times prove that the volume for controlling all Minute pores in monomer volume secondary molten liquid occupies
15%~25% space can reduce production cost and guarantee to find balance between the certain mechanical strength of PVC stone molding base
Point realizes that comprehensive benefit maximizes.(in the present embodiment, on-off valve 1105 is controlled with 10-60 times per second frequency, behaviour is opened and closed
Make.)
In the present embodiment, in order to ensure PVC stone molding base finished product its upper and lower surface finally prepared is smooth shape,
To adapt to actual use, the middle layer and upper and lower surfaces layer of PVC stone molding base are prepared respectively by molding die mechanism, so
Middle layer and upper and lower surfaces layer effective integration are formed into PVC stone molding base finished product afterwards；Wherein, the secondary prepared in step b is melted
Melt liquid and be passed through main extruder, the secondary molten liquid in it is squeezed out and is pressed into the main-inlet of molding die mechanism by main extruder
1201, it is made into middle layer in molding die, the synchronous primary molten liquid extraction that will be prepared in step a is passed through time extrusion all the way
Machine, the primary molten liquid in it is squeezed out and is pressed into the secondary entrance 1202 of molding die mechanism by secondary extruder, in surface mold
It is made into upper and lower surfaces layer, wherein mold used in traditional PVC stone molding base preparation process can be used in molding die, for
The PVC stone molding base for producing different types of structure, replaces corresponding molding die；Surface mold is by primary molten liquid system
At the mold of plane；At the same time, since the two sides up and down of molding die are covered with surface mold respectively, in distance piece 1203,
Middle layer and the forming process of upper and lower surfaces layer separate, therefore, in order to ensure middle layer and upper and lower surfaces layer are being melted
It closes and is effectively fused together in section 1206, is equipped on the outer edge of secondary outlet 1204 inclined to 1203 centerline direction of distance piece
Upper and lower surfaces layer can be pushed to the upper and lower surface of middle layer by the flanging, while cooperate fusion section 1206 by the flanging of folding
Spraying cooling effect in outside is conducive to middle layer and upper and lower surfaces layer and effectively merges in fusion section 1206；The present embodiment
In, control the angle of flanging and 1203 center line of distance piece that time outer edge of outlet 1204 is equipped be 3 °~8 ° (angle is set
Meter is more than this range for promoting the fusion between middle layer and upper and lower surfaces layer ineffective), it can effectively promote
Fusion between interbed and upper and lower surfaces layer.
Embodiment 2
The manufacturing method of the PVC stone molding base of the present embodiment, step is substantially the same manner as Example 1, and difference exists
In: the nitrogen that 0.3Pa is filled in air storage chamber 1106 is controlled in step b；In step b, on-off valve 1105 is per second is opened for adjustment
The frequency of closed operation, so that the stomata containing 15% volume in the secondary molten liquid monomer volume of preparation；Secondary outlet 1204
The flanging that is equipped with of outer edge and the angle of 1203 center line of distance piece be 3 °.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (1)
1. a kind of manufacturing method of PVC stone molding base, it is characterised in that the following steps are included:
Step a: raw material mixing and heating；
In step a, batch mixer is added by formula rate in the raw material of PVC stone molding base and additive, is mixed in batch mixer
It closes and heating, fusing obtains primary molten liquid；
Step b: stomata generates；
In step b, the primary molten liquid prepared in step a is drawn into a-road-through air passing hole generating mechanism, obtains secondary molten liquid；
The stomata generating mechanism includes stomata generating mechanism ontology (1103), which is a circle
Cylindrical channel, one end of stomata generating mechanism ontology (1103) are stomata generating mechanism import (1102), stomata generating mechanism sheet
The other end of body (1103) is that stomata generating mechanism exports (1101)；
The stomata generating mechanism along its length on be provided with several groups snorkel (1104), every group of snorkel (1104) packet
Include the snorkel (1104) inside several insertion stomata generating mechanism, all snorkels on every group of snorkel (1104)
(1104) along the circumferential equidistantly distributed of stomata generating mechanism, and same group of snorkel (1104) its be inserted into stomata and generate machine
The end of all snorkels (1104) in structure is located on the same concentric circles centered on stomata generating mechanism central axes；Edge
Described its increasing diameter of concentric circles or successively decrease on the length direction of stomata generating mechanism；
All snorkels (1104), which are located at the end outside stomata generating mechanism, to be collected and is communicated on inlet manifold, and inlet manifold is logical
On-off valve (1105) is crossed to be connected to air storage chamber (1106)；The air storage chamber (1106) passes through isolating valve (1107) and air pump (1108)
Connection；
The snorkel (1104) includes snorkel body (11041) and end chambers (11042), the end chambers
(11042) it is the spherical shell for being connected to snorkel body (11041) end, is evenly equipped with through-hole, the end chambers on the spherical shell
(11042) it is located inside stomata generating mechanism；
Step c: extrusion molding；
In step c, the secondary molten liquid prepared in step b is passed through main extruder, main extruder is by the secondary molten liquid in it
Squeeze out and be pressed into the main-inlet (1201) of molding die mechanism；
The primary molten liquid prepared in step a extraction is passed through time extruder all the way, secondary extruder is by the primary molten liquid in it
Squeeze out and be pressed into the secondary entrance (1202) of molding die mechanism；
The molding die mechanism includes distance piece (1203) and fusion section (1206)；
The distance piece (1203) includes molding die and covers on the surface mold of molding die or more two sides, the molding respectively
Mold is used to for the secondary molten liquid squeezed into it being processed into the middle layer of PVC stone molding base, and the surface mold will be for that will squeeze
Enter the upper and lower surfaces layer that the primary molten liquid in it is processed into PVC stone molding base；The import of the molding die is main-inlet
(1201), the outlet of molding die is primary outlet (1205)；The import of the surface mold is time entrance (1202), surface mold
Outlet be time outlet (1204)；
The outer edge of described outlet (1204) is equipped with the flanging to distance piece (1203) centerline direction deviation, the fusion
The import of section (1206) is connect with the flanging；
The angle of flanging and distance piece center line that the outer edge of described outlet (1204) is equipped with is 3 °~8 °；
Step d: it is cooled and shaped；
In step d, the spraying cooling liquid on the outside of the fusion section (1206) of molding die mechanism obtains PVC stone molding base finished product.
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| CN201710945758.6A CN107972244B (en) | 2017-10-11 | 2017-10-11 | A kind of manufacturing method of PVC stone molding base |
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| EP0938960A4 (en) * | 1997-07-18 | 2002-02-06 | Hiroshi Morohashi | Method and apparatus for molding plastic material and the like |
| JP2000015730A (en) * | 1998-07-06 | 2000-01-18 | Toppan Printing Co Ltd | Wall member of package |
| JP2003340906A (en) * | 2002-05-28 | 2003-12-02 | Jfe Steel Kk | Manufacturing method for plastic board using used plastic as raw material |
| DE602005009118D1 (en) * | 2004-12-28 | 2008-10-02 | Everfocus Worldwide Co Ltd | Apparatus and method for controlling the nucleation of microscopic bubbles in the manufacture of liquid polymeric materials |
| CN101306927A (en) * | 2008-07-01 | 2008-11-19 | 李衍忠 | PVC stone substrate web and uses thereof |
| CN202590701U (en) * | 2012-04-06 | 2012-12-12 | 曹兵 | Foaming device |
| TW201521993A (en) * | 2013-08-30 | 2015-06-16 | Berry Plastics Corp | Polymeric material for container |
| CN104626700B (en) * | 2015-01-09 | 2017-05-31 | 陈秉胜 | A kind of composite sectional material plate and its processing technology |
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| CN106515156A (en) * | 2016-10-27 | 2017-03-22 | 东北林业大学 | Extruded sandwich structure wood-plastic composite material and manufacturing method thereof |
| CN107139510A (en) * | 2017-05-10 | 2017-09-08 | 安徽森泰木塑集团股份有限公司 | A kind of PVC foam co-extrusion floor preparation technology |
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| CN108582716A (en) | 2018-09-28 |
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