CN104260308A - Co-extrusion forming method for plastic profile and sealing rubber strip - Google Patents
Co-extrusion forming method for plastic profile and sealing rubber strip Download PDFInfo
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- CN104260308A CN104260308A CN201410437448.XA CN201410437448A CN104260308A CN 104260308 A CN104260308 A CN 104260308A CN 201410437448 A CN201410437448 A CN 201410437448A CN 104260308 A CN104260308 A CN 104260308A
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- joint strip
- sealing joint
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- plastic profile
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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
- B29C48/304—Extrusion nozzles or dies 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
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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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
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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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
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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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
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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
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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
- B29C48/355—Conveyors for extruded 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
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/865—Heating
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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
- B29C48/92—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions 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
- C08L27/02—Compositions 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
- C08L27/04—Compositions 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
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/91—Heating, e.g. for cross linking
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a co-extrusion forming method for a plastic profile and a sealing rubber strip. The co-extrusion forming method for the plastic profile and the sealing rubber strip comprises the following steps: plastic profile extrusion forming, coextrusion compounding, and cooling and sizing, wherein air cooling is firstly carried out on the plastic profile obtained by extrusion forming, then the plastic profile is heated by virtue of a hot air device and then enters into a coextrusion mould to be coextruded and compounded with the sealing rubber strip, and finally, the plastic profile passes through water to be cooled and is coextruded to be compounded, so that a composite section is obtained. The coextrusion mould is composed of a front block and a rear block, and a liquid runner in the coextrusion mould is a gradient booster-type runner. The plastic profile is extruded and then enters into the coextrusion mould after being subjected to air cooling sizing and hot air preheating, so that the probability of deformation of the plastic profile can be greatly reduced, and the bonding strength of the plastic profile is guaranteed; the coextrusion mould is composed of the front block and the rear block, the gradient booster-type runner is adopted inside the mould, accuracy of an adhesive tape binding position can be guaranteed, and bonding strength between the rubber strip and the profile can be improved; meanwhile, a water passing manner is adopted for cooling, and the profile can be rapidly and uniformly cooled.
Description
Technical field
The invention belongs to field of plastics processing, relate to coextrusion mold method, particularly a kind of coextrusion mold method of plastic irregular profile and sealing joint strip.
Background technology
Plastic door-window has corrosion-resistant, life-span length, good looking appearance, and the advantages such as rich color, have obtained at present and used widely.By the restriction of material and forming technique, independent plastic door-window section bar sealing property is poor, can not meet instructions for use, for strengthening its sealing property, generally strengthens its sealing property by the mode of compound sealing strip on door and window.
At present, processing method compound seal flexible glue bar compound and plastic material is worn after generally adopting, although part Bulk plastic section bar manufacturing enterprise also adopts method composite plastic door and window and the sealing joint strip of coextrusion mold, but the method for coextru-lamination is also immature technically, the Total Product quality produced is lower, easily occur that adhesive tape is pasted not strongly, the problems such as section bar distortion and adhesive tape dislocation; This phenomenon is particularly outstanding for baroque shaped piece plastic material.
Therefore, a kind of method developing integrated coextrusion mold plastic irregular profile and sealing joint strip is necessary.
Summary of the invention
In view of this, the object of the present invention is to provide the new method of a kind of integrated coextrusion mold plastic irregular profile and sealing joint strip.
For achieving the above object, the invention provides following technical scheme:
The coextrusion mold method of plastic irregular profile and sealing joint strip, comprise plastic profile extrusion shaping, coextru-lamination and cooling and shaping step, first air-cooled cooling after plastic profile extrusion is shaping, then after heating, co-extruding mould and sealing joint strip coextru-lamination is entered, last Water cooling co-extruded composite section.
As coextrusion mold method preferred of plastic irregular profile of the present invention and sealing joint strip, single screw extrusion machine is adopted to extrude sealing joint strip, when extruding, engine speed is 56 ~ 60r/min, and extrusion, along point five sections of heating of material trend, is extruder barrel one, two, three sections according to this, extrusion die one, two sections, each section of heating-up temperature is respectively 148 ~ 152 DEG C, 146 ~ 150 DEG C, 146 ~ 149 DEG C, 144 ~ 147 DEG C, 138 ~ 141 DEG C.
As coextrusion mold method preferred of plastic irregular profile of the present invention and sealing joint strip, the hot air apparatus being arranged on co-extruding mould front end is adopted to heat the plastic irregular profile entering co-extruding mould, during heating, hot blast temperature is 260 ~ 300 DEG C, and blast is 0.2 ~ 0.4Mpa.
As coextrusion mold method preferred of plastic irregular profile of the present invention and sealing joint strip, described co-extruding mould is made up of two pieces, front and back, and the flow channel for liquids in mould is gradual change booster-type runner.
As plastic irregular profile of the present invention and sealing joint strip coextrusion mold method further preferably, also comprise traction aligning and cutting step, during traction, hauling speed is 2.3 ~ 2.4m/min
As plastic irregular profile of the present invention and sealing joint strip coextrusion mold method further preferably, described plastic irregular profile and sealing make sky be PVC, wherein:
Described plastic irregular profile and sealing joint strip are PVC, wherein: plastic irregular profile becomes component and quality thereof to be divided into: PVC:265 part; CPE:26.5 part; Titanium dioxide: 17 parts; Calcium carbonate: 26.5 parts; Tcc:79.5 part; Stable: 13 parts; Processing aid: 7 parts; Described sealing joint strip and quality thereof are divided into PVC:50 ~ 55 part; Calcium carbonate: 80 ~ 90 parts; Stabilizing agent: 1 part; Nitrile rubber powder: 2 ~ 5 parts; Pigment: 1 ~ 3 part; Processing aid: 0.1 ~ 0.3 part.
Beneficial effect of the present invention is:
The coextrusion mold method of plastic irregular profile of the present invention and sealing joint strip, uses air cooling way cooling and shaping after plastic profile extrusion, avoid direct coextrusion mold to cause plastic irregular profile gross distortion; First use the hot-air pre-heating of 260 ~ 300 DEG C before the plastic material of cooling and shaping of the present invention enters co-extruding mould, Surface of profile is softened, ensure the bonding reliability with adhesive tape; Co-extruding mould of the present invention is made up of two pieces, front and back, and runner inside adopts gradual change supercharging runner, can guarantee the accuracy of adhesive tape bonding position, avoids occurring dislocation, and can ensure the bonding strength of adhesive tape and plastic material; Section bar after co-extrusion of the present invention adopts the mode of wearing water to cool, and profile shapes Quick uniform cools.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is adhesive tape extrusion device structural representation of the present invention;
Fig. 2 is institute of the present invention coextrusion mold die structure dwg.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is adhesive tape extrusion device structural representation of the present invention, and wherein 6 is motor, and 7 is charging bucket, and 8 is barrel heat one district, and 9 is barrel heat two district, and 10 is barrel heat three district, and 11 is die heating one district, and 12 is die heating two district, and 13 is co-extruding mould;
Fig. 2 is the structure chart of co-extruding mould 13 of the present invention, and in figure, 1 is glue hand-hole, and 2 is flow channel for liquids (this flow channel for liquids cross section reduces gradually, and pressure increases gradually), and 3 is adhesive tape forming recess, and 4 is plastic irregular profile die cavity, and 5 is adhesive tape outlet; Co-extruding mould of the present invention is made up of (respectively as shown in Fig. 2 a, b) front and back a, b two pieces, can be used by a, b two pieces during use after the assembling of plastic irregular profile moving direction.
Embodiment 1:
The coextrusion mold method of the present embodiment plastic irregular profile and sealing joint strip, comprises the following steps:
A, extrusion molding manufacture plastic irregular profile, the present embodiment plastic irregular profile material and proportioning as follows: PVC:265; CPE:26.5; Titanium dioxide: 17; Calcium carbonate: 26.5; Tcc:79.5; Stable: 13; Processing aid: 7
B, air-cooled cooling step a gained plastic irregular profile;
C, plastic irregular profile squeeze and adhesive tape coextrusion mold:
First cool gained profile shapes with the hot air apparatus being arranged on extrusion die front end to step b to heat, when plastic irregular profile after to be heated enters co-extruding mould 13, start adhesive tape extrusion device, sizing material is entered after adhesive tape extrusion device according to this through barrel heat one district 8 by charging bucket 7, barrel heat two district 9, barrel heat three district 10, die heating one district 11, enters reinforced mould 13 by glue hand-hole 1 behind die heating two district 12; And after after flow channel for liquids 2 supercharging, enter adhesive tape forming recess 3 just one-step forming, eventually pass adhesive tape outlet 5 and the plastic irregular profile coextrusion mold being positioned at plastic irregular profile die cavity 4;
In this step: adhesive tape extrusion device is single screw extrusion machine, when extruding, engine speed is 56 ~ 60r/min, in extrusion cylinder heat a district 8, barrel heat two district 9, barrel heat three district 10, die heating one district 11, die heating two district 12 temperature be respectively 148 ~ 152 DEG C, 146 ~ 150 DEG C, 146 ~ 149 DEG C, 144 ~ 147 DEG C, 138 ~ 141 DEG C;
In this step: sealing joint strip composition and mass percent are: please supplement;
In this step: during heating profile shapes, hot blast temperature is 260 ~ 300 DEG C, and blast is 0.2 ~ 0.4Mpa;
D, Water cooling step c coextru-lamination gained section bar;
E, traction straightening step d cool gained composite material, and controlling hauling machine hauling speed is 2.3 ~ 2.4m/min;
F, as required cutting step e gained composite material obtain product.
The coextrusion mold method of plastic irregular profile of the present invention and sealing joint strip, uses air cooling way cooling and shaping after plastic profile extrusion, avoid direct coextrusion mold to cause plastic irregular profile gross distortion; First use the hot-air pre-heating of 260 ~ 300 DEG C before the plastic material of cooling and shaping of the present invention enters co-extruding mould, Surface of profile is softened, ensure the bonding reliability with adhesive tape; Co-extruding mould of the present invention is made up of two pieces, front and back, and runner inside adopts gradual change supercharging runner, can guarantee the accuracy of adhesive tape bonding position, avoids occurring dislocation, and can ensure the bonding strength of adhesive tape and plastic material; Section bar after co-extrusion of the present invention adopts the mode of wearing water to cool, and profile shapes Quick uniform cools.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (6)
1. the coextrusion mold method of plastic irregular profile and sealing joint strip, comprise plastic profile extrusion shaping, coextru-lamination and cooling and shaping step, it is characterized in that: first air-cooled cooling after plastic profile extrusion is shaping, then after heating, co-extruding mould and sealing joint strip coextru-lamination is entered, last Water cooling co-extruded composite section.
2. the coextrusion mold method of plastic irregular profile and sealing joint strip according to claim 1, it is characterized in that: adopt single screw extrusion machine to extrude sealing joint strip, when extruding, engine speed is 56 ~ 60r/min, and extrusion, along point five sections of heating of material trend, is extruder barrel one, two, three sections according to this, extrusion die one, two sections, each section of heating-up temperature is respectively 148 ~ 152 DEG C, 146 ~ 150 DEG C, 146 ~ 149 DEG C, 144 ~ 147 DEG C, 138 ~ 141 DEG C.
3. the coextrusion mold method of plastic irregular profile and sealing joint strip according to claim 1, it is characterized in that: adopt the hot air apparatus being arranged on co-extruding mould front end to heat the plastic irregular profile entering co-extruding mould, during heating, hot blast temperature is 260 ~ 300 DEG C, and blast is 0.2 ~ 0.4Mpa.
4. the coextrusion mold method of plastic irregular profile and sealing joint strip according to claim 1, it is characterized in that: described co-extruding mould is made up of two pieces, front and back, the flow channel for liquids in mould is gradual change booster-type runner.
5. the coextrusion mold method of plastic irregular profile and sealing joint strip according to claim 1, is characterized in that: also comprise traction aligning and cutting step, and traction straightening step hauling speed is 2.3 ~ 2.4m/min.
6. the coextrusion mold method of plastic irregular profile and sealing joint strip according to claim 1-5 any one, is characterized in that: described plastic irregular profile and sealing joint strip are PVC, wherein: plastic irregular profile becomes component and quality thereof to be divided into: PVC:265 part; CPE:26.5 part; Titanium dioxide: 17 parts; Calcium carbonate: 26.5 parts; Tcc:79.5 part; Stable: 13 parts; Processing aid: 7 parts; Described sealing joint strip and quality thereof are divided into PVC:50 ~ 55 part; Calcium carbonate: 80 ~ 90 parts; Stabilizing agent: 1 part; Nitrile rubber powder: 2 ~ 5 parts; Pigment: 1 ~ 3 part; Processing aid: 0.1 ~ 0.3 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410437448.XA CN104260308A (en) | 2014-08-29 | 2014-08-29 | Co-extrusion forming method for plastic profile and sealing rubber strip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410437448.XA CN104260308A (en) | 2014-08-29 | 2014-08-29 | Co-extrusion forming method for plastic profile and sealing rubber strip |
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| CN104260308A true CN104260308A (en) | 2015-01-07 |
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| CN201410437448.XA Pending CN104260308A (en) | 2014-08-29 | 2014-08-29 | Co-extrusion forming method for plastic profile and sealing rubber strip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108688120A (en) * | 2018-08-06 | 2018-10-23 | 东莞宝奕塑胶制品有限公司 | A kind of copper modeling co-extruder of strip conductor item |
| CN113927870A (en) * | 2021-12-21 | 2022-01-14 | 河北永昌车辆部件科技有限公司 | Extrusion die capable of being used by multiple materials |
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| CN114179329A (en) * | 2021-11-19 | 2022-03-15 | 安徽雄峰建材有限公司 | Co-extrusion packaging process for plastic profile sealing rubber strip |
| CN113927870A (en) * | 2021-12-21 | 2022-01-14 | 河北永昌车辆部件科技有限公司 | Extrusion die capable of being used by multiple materials |
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