CN107060318A - A kind of composite building template and its manufacture method - Google Patents
A kind of composite building template and its manufacture method Download PDFInfo
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- CN107060318A CN107060318A CN201710328596.1A CN201710328596A CN107060318A CN 107060318 A CN107060318 A CN 107060318A CN 201710328596 A CN201710328596 A CN 201710328596A CN 107060318 A CN107060318 A CN 107060318A
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- roll
- base material
- composite
- mould
- plastic formwork
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/05—Forming boards or similar elements the form surface being of plastics
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/20—Making multilayered or multicoloured articles
- B29C43/203—Making multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of composite building template and its manufacture method, including plastic formwork base material, heat is connected to PP composite layer plates on the working face of plastic formwork base material, PP composite layer plates include nonwoven layer, PP compounds lamella and the pure PP film layers being connected as a single entity, pure PP film layers heat is connected to the lamellose upper surface of PP compounds, nonwoven layer heat is connected to the lamellose lower surface of PP compounds, nonwoven layer towards plastic formwork base material working face and heat is connected in one.First by PP particle extrusion moltens, co-extrusion after being well mixed with 30~50mm glass fibre, and enter temporary in cold wall tank, then squeezing out quantitative falls on the PP composite layer plates positioned at lower mould bottom, then turns into parison after upper and lower mould matched moulds, pressurize, cooling；Parison is surrounded by the perpendicular wall upwardly extended, and upper surface is provided with gusset, then upper mould release, backhaul, parison departs from upper mould turns into composite building template finished product after deburring.The template can be with Reusability, low cost, with concrete adhesion.
Description
Technical field
The present invention relates to a kind of composite building template, the invention further relates to a kind of manufacturer of composite building template
Method, belongs to building template technical field.
Background technology
In building construction process, the occasion such as concreting needs supporting module, and template is used as support using keel.Pouring
Build the larger occasion of flooring homalographic and often use plank sheathing, plank sheathing is generally glued board.Because template will bear very big negative
Lotus, has higher requirement to the intensity of template.At the thicker position of concrete layer, generally require to use thicker template or increasing
Plus spine support density.Again because there is concrete to be waited until certain intensity could dismantle template, so every time after formwork erection, mould
Plate needs to work in outdoor environment many days, and wooden template is exposed in outdoor environment, weather exposure, exposes to wind and rain, very
Easily decayed, scrappage is very high.For example under burning sun, wooden template can ftracture due to excessively drying out quickly, make intensity
Decline；In rainwater more season, wooden template is easy to deformation of making moist again, gradually rotten.If template occurs before form removal
Case above, will carry out certain hidden danger to construction quality and safety belt.Due to above reason, plank sheathing is typically only capable to disposably make
With causing the huge wasting of resources, and substantially increase construction cost.
In order to improve the intensity of template, using punching block in the market, punching block easily corrodes and be bonded with concrete generation more,
Using the brushing machine oil on punching block working face is preceding needed, the theory of environmental protection construction is not met, and is not still prevented with mixing
Solidifying soil bonding, template back surface still can corrode due to non-brush machine oil.In addition, the weight weight of punching block, the area of single punching block is small, it is many
The bottom surface that individual splicing easily causes concrete is rough smooth.During form removal, because the throwing of workman is pounded, punching block locally change is easily caused
Shape, more influences flatness.
To improve the precision of template, aluminum alloy mould plate also more and more applied, but aluminum alloy mould plate need welding,
Cost is high, still can not solve and the problem of concrete bonding, and density is still up to 2.71g/cm3.
The content of the invention
It is a first objective of the present invention to provide a kind of composite building template, it can be reused several times, low cost,
With concrete adhesion, and meet the requirement of environmental protection construction.
To realize object above, a kind of composite building template of the invention, including plastic formwork base material, the modern designs of plastics
Heat is connected to PP composite layer plates on the working face of plate base material, and the PP composite layer plates include nonwoven layer, the PP being connected as a single entity
Compound lamella and pure PP film layers, the pure PP film layers heat are connected to the lamellose upper surface of PP compounds, the nonwoven
Layer of cloth heat is connected to the lamellose lower surface of PP compounds, working face of the nonwoven layer towards the plastic formwork base material
And heat is connected in one.
Relative to prior art, the present invention achieves following beneficial effect：The working face of plastic formwork base material is i.e. towards mixed
The front of soil is coagulated, when plastic formwork base material is still in molten condition, it is complex as a whole with PP composite layer plates, cooling is fixed
After type, both combinations are reliable, and avoid and be bonded using PUR, are conducive to environmental protection and operative employee's healthy.
Pure PP film layers region be directly facing concrete, and the concrete of the PP compounds lamella of calcic and calcic is kept apart, template is prevented
It is be bonded with concrete generation so that after form removable, the surface of concrete is smooth.Nonwoven layer has extremely coarse surface,
Plastic formwork base material adhesion with molten condition is big, it is ensured that PP composite layer plates will not shell or rise on plastic formwork base material
Bubble.Plastic formwork base material plays a part of load-bearing, and PP composite layer plates play a part of isolation, it is ensured that the coagulation soil property after the demoulding
Amount, while so that the present invention composite building template will not be damaged due to bonding, be convenient to clean and repeatedly use, greatly
Reduce construction cost greatly.
As the improvement of the present invention, the raw material of the plastic formwork base material includes PP and glass fibre, both weight ratios
For PP：Glass fibre=5：（1.8~2.2）, the length of the glass fibre is 30~50 mm and is evenly distributed in PP.In PP
Middle to add the effect that glass fibre functions similarly to reinforcement in concrete, formula of the invention can make plastic formwork base material than general
The tensile strength of logical PP material base materials improves more than 3 times, and can reduce the coefficient of expansion of plastic formwork base material, equal strong
Under degree, template can it is thinner with save material and reduction manufacturing cost.
As a further improvement on the present invention, in the PP composite layer plates thickness of pure PP film layers for 0.03~
The lamellose thickness of 0.05mm, PP compound is 0.5mm, and the grammes per square metre of non-woven fabrics is 45g/ ㎡.
As a further improvement on the present invention, the lamellose raw material of PP compounds includes PP and calcium carbonate granule, two
The weight ratio of person is PP：Calcium carbonate granule=5：（2.5~3.5）, the granularity of the calcium carbonate granule is 120 mesh and is uniformly distributed
In PP.The calcium carbonate granule of ratio of the present invention is added in PP compound lamellas, the lamellose heat of PP compounds can be reduced
The coefficient of expansion so that the expansion coefficient similar of PP compounds lamella and plastic formwork base material, it is to avoid due to season change or
The factor of person's sunshine causes PP composite layer plates to bubble or shell on plastic formwork base material.
As a further improvement on the present invention, the plastic formwork base material is surrounded by the perpendicular wall upwardly extended, described
The back side of plastic formwork base material is provided with the gusset for holding up and be in grid-like distribution upwards.In use, plastic formwork base material surrounding
Perpendicular wall and each gusset are supported on the lower section of plastic formwork base material, can play a part of reinforcement first, substantially increase plastics
The intensity of template base material, under equality strength, it is possible to reduce the material consumption of template, reduces manufacturing cost；In addition plastic formwork
The perpendicular wall of base material surrounding is easy to adjacent template to be spliced, positioned and abutted, improves the stability of template, is easy to formwork erection
And fixation.
As a further improvement on the present invention, the surrounding of the plastic formwork base material is erected wall middle and upper part and is distributed with along Zhou Changfang
To the template connecting hole of extension.Template connecting hole is easy to that adjacent forms are fixedly connected as into one by bolt or other connectors
Body, and make it that connection is more reliable and more stable.
It is a further object of the invention to provide a kind of manufacture method of composite building template, the mould being made
Plate intensity is high, can be reused several times, low cost, and concrete adhesion, and meets the requirement of environmental protection construction.
To realize object above, the manufacture method of composite building template of the present invention in turn includes the following steps：(1) by grain
The charging aperture of the first double screw extruder is sent into footpath for 2~3mm PP particles, and the first double screw extruder heats PP particles
To 168 DEG C~180 DEG C, the charging aperture of the second double screw extruder is then extruded and entered in molten；(2) it is glass fibre is long
Silk be cut to after 30~50mm, send into the second double screw extruder charging aperture, in the charging of the second double screw extruder PP with
The weight ratio of glass fibre is 5：（1.8~2.2）；(3) glass fibre is uniformly mixed with molten PP in the second double screw extruder
PP mixture of glass fibers is extruded into from the discharging opening of the second double screw extruder after conjunction, and enters temporary in cold wall tank；⑷
The smooth surface of PP composite layer plates is placed on to the mold cavity bottoms of mould under plasticator down, the PP composite layer plates cover lower mould
Bottom of chamber plate and it is fitted on lower mode cavity bottom plate；(5) plasticator makes mould under plasticator come the cold wall tank along horizontal guide rail translation
Underface；(6) the PP mixture of glass fibers is quantitatively discharged after measuring pump-metered from the bottom of the cold wall tank, and is fallen into
On the PP composite layer plates in plasticator lower mode cavity；(7) to leave under plasticator mould along horizontal guide rail translation described for plasticator
The lower section of cold wall tank, returns to matched moulds station；(8) the upper mould of the plasticator is descending, and with lower mould matched moulds, PP glass fibres are mixed
Thing is pressed in the parison that plastic formwork base material is formed on PP composite layer plates；The parison is surrounded by the perpendicular wall upwardly extended,
The upper surface of the parison is provided with the gusset for holding up and be in grid-like distribution upwards；(9) upper mould is under 15~20MPa pressure
Pressurize 5 minutes, while upper mould makes parison cooling and shaping with each leading into cooling water in lower mould；(10) upper mould release, then above mould is beaten
Open and backhaul upwards, parison departs from lower mould and up with upper mould；(11) the knocking from up die cylinder being located in upper mould is ejected downwards, makes type
Base departs from upper mould and fallen；(12) composite building template finished product is turned into after parison deburring.
Relative to prior art, the present invention achieves following beneficial effect：1. plastic formwork base material add 30 in PP~
50mm glass fibres function similarly to the effect of reinforcement in concrete, and formula of the invention can make plastic formwork base material than common
The tensile strength of PP material base materials improves more than 3 times, and can reduce the coefficient of expansion of plastic formwork base material, in equality strength
Under, template can it is thinner with save material and reduction manufacturing cost.2. the smooth surface that PP composite layer plates are contacted with concrete down,
It is easy to the demoulding, it is to avoid with concrete bonding, both protected template to be reused many times, causes that the surface of concrete is smooth again.
3. measuring pump is discharged from cold wall tank after the PP mixture of glass fibers equivalent to one piece of template, upper mould and lower mould matched moulds every time,
PP mixture of glass fibers is just full of the die cavity in template, reduces the waste of material and the amount of overlap.4. PP glass fibres are mixed
When compound is still in molten condition, PP mixture of glass fibers is set to be bonded on PP composite layer plates by matched moulds, cooling and shaping
Afterwards, both combinations are reliable, and avoid and be bonded using PUR, are conducive to environmental protection and operative employee's healthy.⑤
The bottom wall of lower mould is smooth surface, is easy to place PP composite layer plates, forms the smooth working face of template；The roof of upper mould is in recessed
Convex uneven shape, is evenly distributed with after multiple downwardly projecting squares, matched moulds, extruding of the PP mixture of glass fibers in upper mould
Under insert mould gap or groove in form the perpendicular wall of parison surrounding and the gusset at the parison back side, turn into type after cooling and shaping
Base.6. because upper mould is in rough shape, the adhesion of upper mould and parison is much larger than after lower mould, therefore die sinking, and parison connects
It is connected on mould, mould unloading is realized at the back side for promoting template by knocking from up die cylinder, is conducive to protecting the working face of template, it is to avoid work
It is squeezed as face.7. plastic formwork base material plays a part of load-bearing, and PP composite layer plates play a part of isolation, it is ensured that the demoulding
Concrete quality afterwards, while so that the composite building template of the present invention will not be damaged due to bonding, being convenient to clean and many
It is secondary to reuse, greatly reduce construction cost.
As the present invention improvement, the step (8) with step (9) between also comprise the following steps：Taking out in upper mould
The action of core cylinder forms circumferentially distributed template connecting hole in the perpendicular wall middle and upper part of parison surrounding, and then core pulling cylinder resets.In modeling
When expecting that template base material is still in molten condition, template connecting hole is directly processed on perpendicular wall top by core pulling cylinder, is easy to construction
When adjacent forms are connected to one by bolt or other connectors, and cause connection it is more reliable and more stable.
As a further improvement on the present invention, step (5) in the manufacture methods of PP composite layer plates comprise the following steps：
1. it is 2~3mm PP particles and the calcium carbonate granule by weight 5 of 120 mesh by particle diameter：（2.5~3.5）It is well mixed；2. will
The raw material of step (1) is heated to 160 DEG C~180 DEG C on sheet material plasticator, and it is thin to suppress the PP compounds that thickness is 0.5mm
Piece；3. in the PP compound thin slices upper surface Composite Pure PP films of heat, while in PP compound thin slice lower surface compound nonwoven cloths, obtaining
To PP composite layer plates, PP composite layer plates are then cooled to normal temperature；The thickness of wherein pure PP films is 0.03~0.05mm, nothing
The grammes per square metre for spinning cloth is 45g/ ㎡.The calcium carbonate granule of ratio of the present invention is added in PP compound lamellas, PP mixing can be reduced
Expect lamellose thermal coefficient of expansion so that the expansion coefficient similar of PP compounds lamella and plastic formwork base material, it is to avoid due to
The change in season or the factor of sunshine cause PP composite layer plates to bubble or shell on plastic formwork base material.Pure PP film layers are straight
Junction keeps apart the concrete of the PP compounds lamella of calcic and calcic to concrete, prevents template from being sent out with concrete
Raw bonding so that after form removable, the surface of concrete is smooth.Nonwoven layer has extremely coarse surface, with molten condition
Plastic formwork base material adhesion it is big, it is ensured that PP composite layer plates will not shell or bubble on plastic formwork base material.
As a further improvement on the present invention, step 3. in heat PP compound thin slices on Composite Pure PP films and non-woven fabrics
Carried out on tri-roll press machine, the tri-roll press machine includes three stacked rolls, the axis of three rolls be parallel to each other and
In same perpendicular, wherein upper and lower roll turns clockwise, middle roll rotate counterclockwise, PP compounds thin slice is certainly left
Therefrom enter along the horizontal plane between roll and bottom roll to the right, advance to the right after wrapped middle roll and topping roll successively；Non-woven fabrics
Right-to-left enters from the lower section of bottom roll along the horizontal plane, the lower surface of PP compound thin slices is fitted in after wrapped bottom roll, so
Common wrapped middle roll and topping roll afterwards；Pure PP films enter from top to bottom between roll and bottom roll, be fitted in PP compounds
The upper surface of thin slice and common wrapped middle roll and topping roll, the right side of topping roll is provided with cooling cylinder, the PP composite layer plates
Advance to the right after the wrapped cooling cylinder.Before not yet being cooled down using the PP compound thin slices of heat, after the wrapped bottom roll of non-woven fabrics, patch
In the lower surface of PP compound thin slices, it is involved in jointly between middle roll and bottom roll；After the pure wrapped middle roll of PP films, PP is attached to
The upper surface of compound thin slice, is involved between middle roll and bottom roll jointly；Using the adhesive property of hot PP compounds thin slice,
Pure PP films and non-woven fabrics are bonded on PP compound thin slices completely, then the extruding in passing through between roll and topping roll, and
Wrapped on middle roll and topping roll, three is bonded as one completely, then wrapped cooling cylinder cooling and shaping.
Brief description of the drawings
Fig. 1 is the front view of composite building template embodiment one of the present invention.
Fig. 2 is Fig. 1 top view.
Fig. 3 is the stereogram of composite building template embodiment two of the present invention.
Fig. 4 is the schematic diagram that PP composite layer plates are combined on tri-roll press machine.
In figure：1. plastic formwork base material；1a. erects wall；1b. gussets；1c. template connecting holes；2.PP composite layer plates；2a.
Pure PP film layers；2b.PP compound lamellas；2c. nonwoven layers；3. topping roll；4. in roll；5. bottom roll；6. cooling cylinder.
Embodiment
As shown in Figure 1 to Figure 3, composite building template of the invention includes plastic formwork base material 1, plastic formwork base material 1
Working face on heat be connected to PP composite layer plates 2, PP composite layer plates 2 include nonwoven layer 2c, the PP compound being connected as a single entity
Lamella 2b and pure PP film layers 2a, pure PP film layers 2a heat is connected to PP compound lamellas 2b upper surface, and nonwoven layer 2c heat connects
In PP compound lamellas 2b lower surface, nonwoven layer 2c towards plastic formwork base material 1 working face and heat is connected in one.
Towards the front of concrete, molten condition is still in plastic formwork base material 1 for the working face of plastic formwork base material 1
When, it is complex as a whole with PP composite layer plates 2, after cooling and shaping, both combinations are reliable, and avoid and use PUR
Bonding, is conducive to environmental protection and operative employee's healthy.Pure PP film layers 2a region be directly facing concrete, and the PP of calcic is mixed
The concrete of material lamella 2b and calcic is kept apart, and prevents template be bonded with concrete generation so that after form removable, coagulation
The surface of soil is smooth.Nonwoven layer 2c has extremely coarse surface, and the adhesion of plastic formwork base material 1 with molten condition is big,
Ensure that PP composite layer plates 2 will not shell or bubble on plastic formwork base material 1.Plastic formwork base material 1 plays a part of load-bearing,
PP composite layer plates 2 play a part of isolation, it is ensured that the concrete quality after the demoulding, while so that the composite building of the present invention
Template will not be damaged due to bonding, be convenient to clean and repeatedly used, greatly reduce construction cost.
The raw material of plastic formwork base material 1 includes PP and glass fibre, and both weight ratios are PP：Glass fibre=5：（1.8
~2.2）, the length of glass fibre is 30~50 mm and is evenly distributed in PP.Glass fibre is added in PP to function similarly to
The effect of reinforcement in concrete, formula of the invention can make plastic formwork base material 1 than the tensile strength of common PP materials base material
More than 3 times are improved, and the coefficient of expansion of plastic formwork base material 1 can be reduced, under equality strength, template can be thinner with section
About material and reduction manufacturing cost.
Pure PP film layers 2a thickness is 0.03~0.05mm, PP compound lamellas 2b thickness in PP composite layer plates 2
For 0.5mm, the grammes per square metre of non-woven fabrics is 45g/ ㎡.
PP compound lamellas 2b raw material includes PP and calcium carbonate granule, and both weight ratios are PP：Calcium carbonate granule=
5：（2.5~3.5）, the granularity of calcium carbonate granule is 120 mesh and is evenly distributed in PP.This is added in PP compound lamellas 2b
The calcium carbonate granule of invention ratio, can reduce PP compound lamellas 2b thermal coefficient of expansion so that PP compound lamellas
2b and plastic formwork base material 1 expansion coefficient similar, it is to avoid because the change in season or the factor of sunshine cause PP composite beds
Sheet material 2 bubbles or shelled on plastic formwork base material 1.
Plastic formwork base material 1 is surrounded by the perpendicular wall 1a upwardly extended, and the back side of plastic formwork base material 1 is provided with perpendicular upwards
Rise and in the gusset 1b of grid-like distribution.The nonwoven layer 2c phases of the bottom plate of plastic formwork base material 1 and PP composite layer plates 2 are glued
Connect.In use, the perpendicular wall 1a and each gusset 1b of the surrounding of plastic formwork base material 1 are supported on the lower section of plastic formwork base material 1, first may be used
To play a part of reinforcement, the intensity of plastic formwork base material 1 is substantially increased, under equality strength, it is possible to reduce template
Material consumption, reduces manufacturing cost；In addition the perpendicular wall 1a of the surrounding of plastic formwork base material 1 is easy to adjacent template to be spliced, determined
Position and abut, improve template stability, be easy to formwork erection and fixation.
The surrounding of plastic formwork base material 1 erects wall 1a middle and upper parts and the template connecting hole 1c extended along circumferential direction is distributed with.Mould
Plate connecting hole 1c is easy to that adjacent forms are connected to one by bolt or other connectors, and make it that connection is more steady
It is fixed reliable.
The manufacture method of composite building template of the present invention, in turn includes the following steps：
(1) particle diameter is sent into the charging aperture of the first double screw extruder for 2~3mm PP particles, the first double screw extruder is by PP
Particle is heated to 168 DEG C~180 DEG C, and the charging aperture of the second double screw extruder is then extruded and entered in molten；
(2) filament of glass fiber is cut to after 30~50mm, sends into the charging aperture of the second double screw extruder, the second twin-screw
The weight ratio of PP and glass fibre is 5 in the charging of extruder：（1.8~2.2）；
(3) going out from the second double screw extruder after glass fibre is uniformly mixed with molten PP in the second double screw extruder
Material mouth is extruded into PP mixture of glass fibers, and enters temporary in cold wall tank；
(4) the smooth surface of PP composite layer plates 2 is placed on to the mold cavity bottoms of mould under plasticator down, PP composite layer plates 2 are covered
Lower mode cavity bottom plate and it is fitted on lower mode cavity bottom plate；
(5) plasticator translates the underface for making mould under plasticator come cold wall tank along horizontal guide rail；
(6) PP mixture of glass fibers is quantitatively discharged after measuring pump-metered from the bottom of cold wall tank, and falls into plasticator lower mode cavity
In PP composite layer plates 2 on；
(7) plasticator translates the lower section for making mould under plasticator leave cold wall tank along horizontal guide rail, returns to matched moulds station；
(8) the upper mould of plasticator is descending, with lower mould matched moulds, PP mixture of glass fibers is pressed in be formed on PP composite layer plates 2 and moulded
Expect the parison of template base material 1；Parison is surrounded by the perpendicular wall 1a upwardly extended, and the upper surface of parison is provided with holding up upwards and be in
The gusset 1b of grid-like distribution；
(9) upper mould is in pressurize 5 minutes under 15~20MPa pressure, while upper mould makes parison with each leading into cooling water in lower mould
Cooling and shaping；
(10) upper mould release, then upper mould opening and backhaul upwards, it is simultaneously up with upper mould that parison departs from lower mould；
(11) the knocking from up die cylinder being located in upper mould is ejected downwards, parison is departed from upper mould and is fallen；(12) turn into compound after parison deburring
Type building template finished product.
Step (8) with step (9) between also comprise the following steps：Core pulling cylinder action in upper mould is in the perpendicular of parison surrounding
Wall 1a middle and upper parts form circumferentially distributed template connecting hole 1c, and then core pulling cylinder resets.In plastic formwork base material 1 still in molten
When melting state, template connecting hole 1c directly on perpendicular wall 1a tops is processed by core pulling cylinder, when being easy to construct by bolt or its
Adjacent forms are connected to one by its connector, and make it that connection is more reliable and more stable.
Step (5) in the manufacture methods of PP composite layer plates 2 comprise the following steps：1. it is PP of 2~3mm by particle diameter
The calcium carbonate granule by weight 5 of grain and 120 mesh：（2.5~3.5）It is well mixed；2. by step raw material (1) in sheet material compression moulding
160 DEG C~180 DEG C are heated on machine, and suppresses the PP compound thin slices that thickness is 0.5mm；3. in the PP compound thin slices of heat
Upper surface Composite Pure PP films, while in PP compound thin slice lower surface compound nonwoven cloths, obtaining PP composite layer plates 2, then will
PP composite layer plates 2 are cooled to normal temperature；The thickness of wherein pure PP films is 0.03~0.05mm, and the grammes per square metre of non-woven fabrics is 45g/ ㎡.
As shown in figure 4, step 3. on the PP compound thin slices of heat Composite Pure PP films and non-woven fabrics in tri-roll press machine
Upper to carry out, tri-roll press machine includes three stacked rolls, and the axis of three rolls is parallel to each other and positioned at same perpendicular
Interior, wherein topping roll 3, bottom roll 5 turn clockwise, the middle rotate counterclockwise of roll 4, and PP compounds thin slice is from left to right along level
Face therefrom enters between roll 4 and bottom roll 5, advances to the right after wrapped middle roll 4 and topping roll 3 successively；Non-woven fabrics is from dextrad
It is left to enter along the horizontal plane from the lower section of bottom roll 5, the lower surface of PP compound thin slices is fitted in after wrapped bottom roll 5, then altogether
With wrapped middle roll 4 and topping roll 3；Pure PP films enter from top to bottom between roll 4 and bottom roll 5, be fitted in PP compounds
The upper surface of thin slice and common wrapped middle roll 4 and topping roll 3, the right side of topping roll 3 is provided with cooling cylinder 6, PP composite layer plates 2
Advance to the right after wrapped cooling cylinder 6.
The calcium carbonate granule of ratio of the present invention is added in PP compound lamellas 2b, PP compound lamellas 2b can be reduced
Thermal coefficient of expansion so that the expansion coefficient similar of PP compound lamella 2b and plastic formwork base material 1, it is to avoid due to season
The factor of change or sunshine causes PP composite layer plates 2 to bubble or shell on plastic formwork base material 1.Pure PP film layers 2a is direct
Towards concrete, the PP compound lamella 2b of calcic and calcic concrete are kept apart, prevent template from being sent out with concrete
Raw bonding so that after form removable, the surface of concrete is smooth.Nonwoven layer 2c has extremely coarse surface, with molten
The adhesion of plastic formwork base material 1 of state is big, it is ensured that PP composite layer plates 2 will not shell or bubble on plastic formwork base material 1.
Before not yet being cooled down using the PP compound thin slices of heat, after the wrapped bottom roll 5 of non-woven fabrics, PP compound thin slices are attached to
Lower surface, is involved between middle roll 4 and bottom roll 5 jointly；After the pure wrapped middle roll 4 of PP films, PP compound thin slices are attached to
Upper surface, is involved between middle roll 4 and bottom roll 5 jointly；Using the adhesive property of hot PP compounds thin slice, by pure PP films and
Non-woven fabrics is bonded on PP compound thin slices completely, then the extruding in passing through between roll 4 and topping roll 3, and in middle roll 4
With it is wrapped on topping roll 3, three is bonded as one completely, then the wrapped cooling and shaping of cooling cylinder 6.
The total height of plastic formwork base material 1 is 65mm, the bottom plate of plastic formwork base material 1, perpendicular wall 1a and gusset 1b thickness
For 8mm.
The length of plastic formwork base material 1 is 600mm, 1100mm, 1200mm or 1800mm, the width of plastic formwork base material 1
For 400mm or 600mm, dimensions above can arrange in pairs or groups as plurality of specifications.
It the foregoing is only the preferable possible embodiments of the present invention, non-therefore the limitation present invention patent protection model
Enclose.In addition to the implementation, the present invention can also have other embodiment.All use equivalent substitutions or the skill of equivalent transformation formation
Art scheme, all falls within the protection domain of application claims.Technical characteristic of the invention without description can be by or using now
There is technology realization, will not be repeated here.
Claims (10)
1. a kind of composite building template, including plastic formwork base material, it is characterized in that：On the working face of the plastic formwork base material
Heat is connected to PP composite layer plates, nonwoven layer that the PP composite layer plates include being connected as a single entity, PP compounds lamella and pure
PP film layers, the pure PP film layers heat is connected to the lamellose upper surface of PP compounds, and the nonwoven layer heat is connected to the PP
The lamellose lower surface of compound, the nonwoven layer towards the plastic formwork base material working face and heat is connected in one.
2. composite building template according to claim 1, it is characterized in that：The raw material of the plastic formwork base material includes PP
And glass fibre, both weight ratios are PP：Glass fibre=5：（1.8~2.2）, the length of the glass fibre is 30~50
Mm and it is evenly distributed in PP.
3. composite building template according to claim 1, it is characterized in that：Pure PP film layers in the PP composite layer plates
Thickness is 0.03~0.05mm, and the lamellose thickness of PP compounds is 0.5mm, and the grammes per square metre of non-woven fabrics is 45g/ ㎡.
4. composite building template according to claim 1, it is characterized in that：The lamellose raw material of PP compounds includes
PP and calcium carbonate granule, both weight ratios are PP：Calcium carbonate granule=5：（2.5~3.5）, the granularity of the calcium carbonate granule
For 120 mesh and it is evenly distributed in PP.
5. composite building template according to any one of claim 1 to 4, it is characterized in that：The plastic formwork base material
Be surrounded by the perpendicular wall upwardly extended, the back side of the plastic formwork base material provided with holding up and in the muscle of grid-like distribution upwards
Plate.
6. composite building template according to claim 5, it is characterized in that：The surrounding of the plastic formwork base material is erected in wall
The template connecting hole extended along circumferential direction is distributed with top.
7. a kind of manufacture method of composite building template, it is characterized in that, in turn include the following steps：(1) it is 2~3mm by particle diameter
PP particles send into the first double screw extruder charging aperture, the first double screw extruder by PP particles heat to 168 DEG C~
180 DEG C, the charging aperture of the second double screw extruder is then extruded and entered in molten；(2) filament of glass fiber is cut to 30
After~50mm, the charging aperture of the second double screw extruder is sent into, PP and glass fibre in the charging of the second double screw extruder
Weight ratio is 5：（1.8~2.2）；(3) from second after glass fibre is uniformly mixed with molten PP in the second double screw extruder
The discharging opening of double screw extruder is extruded into PP mixture of glass fibers, and enters temporary in cold wall tank；(4) by PP composite beds
The smooth surface of sheet material is placed on the mold cavity bottoms of mould under plasticator down, and the PP composite layer plates cover lower mode cavity bottom plate and patch
Close on lower mode cavity bottom plate；(5) plasticator translates the underface for making mould under plasticator come the cold wall tank along horizontal guide rail；⑹
The PP mixture of glass fibers is quantitatively discharged after measuring pump-metered from the bottom of the cold wall tank, and falls into mould under plasticator
On the PP composite layer plates in chamber；(7) plasticator makes mould under plasticator leave under the cold wall tank along horizontal guide rail translation
Side, returns to matched moulds station；(8) the upper mould of the plasticator is descending, with lower mould matched moulds, PP mixture of glass fibers is pressed in into PP and answered
Close the parison that plastic formwork base material is formed on layer of sheet material；The parison is surrounded by the perpendicular wall upwardly extended, the parison
Upper surface is provided with the gusset for holding up and be in grid-like distribution upwards；(9) mould is gone up in pressurize 5 minutes under 15~20MPa pressure,
Upper mould makes parison cooling and shaping with each leading into cooling water in lower mould simultaneously；(10) upper mould release, then above mould is opened and upward
Backhaul, parison departs from lower mould and up with upper mould；(11) the knocking from up die cylinder being located in upper mould is ejected downwards, parison is departed from upper mould
Fall；(12) composite building template finished product is turned into after parison deburring.
8. composite building template according to claim 7 and its manufacture method, it is characterized in that, the step (8) with step
(9) also comprise the following steps between：Core pulling cylinder action in upper mould is formed in the perpendicular wall middle and upper part of parison surrounding circumferentially to divide
The template connecting hole of cloth, then core pulling cylinder reset.
9. composite building template and its manufacture method according to claim 7 or 8, it is characterized in that, step (5) in PP
The manufacture method of composite layer plate comprises the following steps：1. it is 2~3mm PP particles and the calcium carbonate granule of 120 mesh by particle diameter
By weight 5：（2.5~3.5）It is well mixed；2. the raw material of step (1) is heated to 160 DEG C~180 on sheet material plasticator
DEG C, and suppress the PP compound thin slices that thickness is 0.5mm；3. in the PP compound thin slices upper surface Composite Pure PP films of heat, together
When in PP compound thin slice lower surface compound nonwoven cloths, obtain PP composite layer plates, be then cooled to PP composite layer plates often
Temperature；The thickness of wherein pure PP films is 0.03~0.05mm, and the grammes per square metre of non-woven fabrics is 45g/ ㎡.
10. composite building template according to claim 9 and its manufacture method, it is characterized in that, step 3. in heat
Composite Pure PP films and non-woven fabrics are carried out on tri-roll press machine on PP compound thin slices, and the tri-roll press machine includes stacked three
Root roll, the axis of three rolls is parallel to each other and in same perpendicular, wherein upper and lower roll turns clockwise, in
Roll rotate counterclockwise, PP compounds thin slice therefrom enters between roll and bottom roll along the horizontal plane from left to right, wrapped successively
Advance to the right after middle roll and topping roll；Non-woven fabrics right-to-left enters from the lower section of bottom roll along the horizontal plane, wrapped bottom roll
The lower surface of PP compound thin slices is fitted in afterwards, then common wrapped middle roll and topping roll；During pure PP films enter from top to bottom
Between roll and bottom roll, the upper surface of PP compound thin slices and common wrapped middle roll and topping roll are fitted in, topping roll
Advance to the right after being provided with cooling cylinder, the wrapped cooling cylinder of PP composite layer plates on right side.
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| CN112240097A (en) * | 2020-11-09 | 2021-01-19 | 湖南中集新材料科技有限公司 | Splicing type wood formwork for building construction and preparation method thereof |
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| CN107060318B (en) | 2022-05-31 |
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