CN113071173A - Foaming three-dimensional relief composite membrane based on extrusion compounding machine and manufacturing process thereof - Google Patents

Foaming three-dimensional relief composite membrane based on extrusion compounding machine and manufacturing process thereof Download PDF

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Publication number
CN113071173A
CN113071173A CN202110318400.7A CN202110318400A CN113071173A CN 113071173 A CN113071173 A CN 113071173A CN 202110318400 A CN202110318400 A CN 202110318400A CN 113071173 A CN113071173 A CN 113071173A
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layer
extrusion
foaming
parts
density polyethylene
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梁艳艳
许锦才
黄伟伦
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/321—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed part being a lining, e.g. a film or a support lining
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • B29C59/046—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for layered or coated substantially flat surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/06—Embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Molding Of Porous Articles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a foaming three-dimensional relief composite membrane based on an extrusion compounding machine and a manufacturing process thereof. The manufacturing process is that the base material is discharged and then corona treatment is carried out; the adhesive layer and the foaming layer are formed at one time in a co-extrusion mode to form an integrated co-extruded film layer, and liquid gas is injected into a second extruder for extruding the foaming layer in the forming process; carrying out primary compounding on the co-extruded film layer and the base material, and carrying out calendaring and knurling to form a composite film with decorative functional patterns; further fixing the pattern on the surface of the composite membrane by a shaping device; and cutting off unstable edges and then rolling. The invention can better meet the application requirements of the foaming three-dimensional relief composite membrane in various fields; the formed composite membrane has high quality, high yield and strong market competitiveness.

Description

Foaming three-dimensional relief composite membrane based on extrusion compounding machine and manufacturing process thereof
Technical Field
The invention relates to the technical field of composite material processing, in particular to a foaming three-dimensional relief composite membrane based on an extrusion compounding machine and a manufacturing process thereof.
Background
At present, the foamed three-dimensional relief composite film or composite sheet is often applied to products such as indoor high-end decoration (such as relief wall cloth) or automobile heat insulation and sun shade. The manufacturing method of the foaming three-dimensional relief composite film or composite sheet mainly comprises the following steps: coating the foaming material on a base material, and then carrying out heat preservation foaming molding. The principle of the mode is simple, but the heat-preservation foaming process generally needs longer time, so the manufacturing process consumes time and labor, the production period is longer, and the production efficiency is low. Further, when these composite films or composite sheets are applied to interior decoration, a cloth substrate is generally used. Because the foaming material is compounded with the cloth substrate in a coating mode, an organic solvent with a diluting function or organic molecules with low polymerization degree need to be added into the foaming material, and the organic solvent is VOCs. Moreover, in the prepared product, these organic solvents or small organic molecules which are not completely solidified often remain, and are released in the using process of users to affect the health of the human body, and the service life of the product is also reduced. When the composite films or composite sheets are applied to the heat-insulating sun shade of the automobile, the aluminizer is usually adopted as a base material, the product structure is mainly that a layer of foaming material is arranged between two layers of aluminizers, and then edge covering is carried out, and the products are easy to generate wrinkles or deformation and the like in the actual use process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a foaming three-dimensional relief composite membrane based on an extrusion compounding machine, which has a stable structure, good internal adhesive force and external decorative effect, can effectively avoid the release of organic solvent and accords with the environmental protection concept.
The invention also aims to provide a manufacturing process of the foaming three-dimensional relief composite membrane based on the extrusion compounding machine, which has the advantages of simple process principle and shorter production period, and can greatly improve the production efficiency and reduce the energy consumption.
The technical scheme of the invention is as follows: the utility model provides a three-dimensional relief (sculpture) composite membrane of foaming based on extrusion compounding machine, includes substrate, bond line and the foaming layer that connects gradually, wherein, bond line and foaming layer adopt crowded mode one shot forming to crowd the rete altogether, crowd the rete altogether and the substrate complex is fixed.
Furthermore, the composite membrane further comprises a functional layer, wherein the base material, the bonding layer, the foaming layer and the functional layer are sequentially connected, the bonding layer, the foaming layer and the functional layer are formed into a co-extrusion membrane layer in a co-extrusion mode at one step, and the co-extrusion membrane layer and the base material are compounded and fixed.
In the composite membrane, the base material is one of cloth, non-woven fabric, grid fiber cloth, paper, a plastic film, an aluminum-plated film and a metal foil, and the thickness of the base material is 10-230 μm.
The main component of the adhesive layer is one or more of low density polyethylene, linear low density polyethylene, high density polyethylene, ethylene-acrylic acid copolymer or ethylene-methacrylic acid copolymer.
The thickness of the foaming layer is 200-4000 micrometers; the foaming layer comprises the following main components in parts by weight:
53-100 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene and ethylene-vinyl acetate copolymer;
0-30 parts of inorganic filler;
0-10 parts of color master batch;
0-7 parts of a flame retardant.
As a preferable scheme, the foaming layer comprises the following main components in parts by weight:
71-99.5 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene and ethylene-vinyl acetate copolymer;
0-16 parts of an inorganic filler;
0-8 parts of color master batch;
0.5-5 parts of a flame retardant.
The functional layer comprises the following main components in parts by weight:
50-98 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene and polypropylene;
0-30 parts of inorganic filler;
2-20 parts of functional master batch.
The inorganic filler is one or more of titanium dioxide, ferric oxide, calcium carbonate, talcum powder and kaolin;
the functional master batch is one or more of antistatic master batch, pearlescent master batch, antibacterial master batch, flame-retardant master batch, weather-resistant master batch, aromatic master batch, fluorescent master batch or release master batch and the like.
The invention relates to a manufacturing process of a foaming three-dimensional relief composite membrane based on an extrusion compounding machine, which comprises the following steps:
(1) the unwinding mechanism discharges the base material, and the surface of the base material is subjected to corona treatment through a corona device;
(2) the first extruder and the second extruder are used for forming the bonding layer and the foaming layer in one step through a co-extrusion die head, the bonding layer and the foaming layer form an integrated co-extruded film layer, and liquid gas is injected into the second extruder for extruding the foaming layer in the forming process;
(3) the compounding device is used for carrying out primary compounding on the co-extrusion film layer and one surface of the base material subjected to corona treatment, and carrying out calendaring and knurling on the co-extrusion film layer to form a composite film with decorative functional patterns;
(4) sending the primarily compounded composite membrane into a shaping device, and further fixing the pattern on the surface of the composite membrane;
(5) and cutting off the unstable edge of the composite membrane, and then rolling by a rolling mechanism.
When the composite membrane further comprises a functional layer, the step (2) is as follows: the first extruder, the second extruder and the third extruder are used for forming the bonding layer, the foaming layer and the functional layer in one step through a co-extrusion die head, the bonding layer, the foaming layer and the functional layer form an integrated co-extruded film, and liquid gas is injected into the second extruder for extruding the foaming layer in the forming process.
In the manufacturing method, in the step (2), the cylinder temperature of the first extruder is 160-330 ℃, the cylinder temperature of the second extruder is 160-330 ℃, and the cylinder temperature of the third extruder is 160-330 ℃; the co-extrusion die head is a three-manifold co-extrusion die head, and the temperature of the co-extrusion die head is 200-330 ℃.
In the step (3), the compounding device comprises a rubber roller and a knurled cooling roller which are matched, the compounding pressure between the rubber roller and the knurled cooling roller is 2-5 MPa, the water temperature of the cooling roller is 15-25 ℃, and the traction speed of the compounding device is 5-200 m/min.
In addition, in the step (1), the unreeling tension of the base material is generally 50-300N, and the corona power of the corona device is generally greater than or equal to 4000W. In the step (4), the winding tension of the foamed three-dimensional relief composite membrane is generally 80-300N.
The principle of the foaming three-dimensional relief composite membrane based on the extrusion compounding machine and the manufacturing process thereof is as follows: firstly, a foaming layer is added between the functional layer and the bonding layer, the foaming layer generates a cellular structure, and molecular chains of the functional layer and the bonding layer easily generate strong binding force with the foaming layer through the cellular structure, so that a finished product is not easy to separate; secondly, the functional layer, the foaming layer and the bonding layer are formed in one step by adopting a co-extrusion forming mode, so that the multi-layer structure forming the co-extrusion film layer is formed in one step on the basis of realizing respective functions, very strong binding force is provided between layers, and meanwhile, an adhesive diluted by an organic solvent is not required to be coated, and the purpose of environmental protection is achieved.
Compared with the prior art, the invention has the following beneficial effects:
in the manufacturing process of the foaming three-dimensional relief composite membrane, the functional layer, the foaming layer and the bonding layer form a one-step formed co-extruded membrane, compared with the traditional foaming three-dimensional relief composite membrane, the inner layer has better adhesiveness, the outer side has multiple functions, and the performance requirements of the foaming three-dimensional relief composite membrane applied in various fields can be better met; the formed foaming three-dimensional relief composite membrane has high quality, high yield and strong market competitiveness.
In the manufacturing process of the foaming three-dimensional relief composite membrane, the functional layer, the foaming layer and the bonding layer are processed and formed in a co-extrusion mode by using the co-extrusion die head, the production process is simple in principle, short in production period and high in production efficiency, an organic solvent is not required to be added, the input cost and the energy consumption of equipment are reduced, the production process is green and environment-friendly, and the discharge of VOCs is avoided.
According to the manufacturing process of the foaming three-dimensional relief composite membrane, according to actual requirements, the foaming three-dimensional relief composite membrane can adjust corresponding performance through adjusting parameters in a formula without adjusting the process, and is convenient to use and high in production efficiency.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1
The embodiment provides a three-dimensional relief (sculpture) composite membrane of foaming based on extrusion compounding machine, including substrate, bond line and the foaming layer that connects gradually, wherein, bond line and foaming layer adopt crowded mode one shot forming to be crowded rete altogether, and crowded rete and substrate are compound fixed altogether.
The base material is one of cloth, non-woven fabric, grid fiber cloth, paper, a plastic film, an aluminized film or a metal foil, and the thickness of the base material is 10-230 microns. In this example, a cloth base material having a thickness of about 150 μm was used.
The main component of the adhesive layer is one or more of low density polyethylene, linear low density polyethylene, high density polyethylene, ethylene-acrylic acid copolymer or ethylene-methacrylic acid copolymer. In this example, a mixture of low density polyethylene and ethylene-acrylic acid copolymer in a ratio of 90:10 parts by weight was used.
The thickness of the foaming layer is 200 to 4000 μm, about 2000 μm in this embodiment.
In this example, the foaming layer comprises the following main components in parts by weight:
83 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene and ethylene-vinyl acetate copolymer; in the embodiment, 83 parts of the mixture of the low-density polyethylene and the ethylene-acrylic acid copolymer in the weight part ratio of 90:10 is adopted;
10 parts of inorganic filler;
6 parts of color master batch;
and 1 part of a flame retardant.
The inorganic filler is one or more of titanium dioxide, ferric oxide, calcium carbonate, talcum powder and kaolin. Calcium carbonate is used in this example.
The manufacturing process of the foaming three-dimensional relief composite membrane based on the extrusion compounding machine comprises the following steps:
(1) the unwinding mechanism discharges the base material, and the surface of the base material is subjected to corona treatment through a corona device; the unreeling tension of the base material is generally 50-300N, and the corona power of the corona device is generally more than or equal to 4000W;
(2) the first extruder and the second extruder are used for forming the bonding layer and the foaming layer in one step through a co-extrusion die head, the bonding layer and the foaming layer form an integrated co-extruded film layer, and liquid gas is injected into the second extruder for extruding the foaming layer in the forming process; wherein the cylinder temperature of the first extruder is 160-330 ℃, the cylinder temperature of the second extruder is 160-330 ℃, and the cylinder temperature of the third extruder is 160-330 ℃; the co-extrusion die head is a three-manifold co-extrusion die head, and the temperature of the co-extrusion die head is 200-330 ℃;
(3) the compounding device is used for carrying out primary compounding on the co-extrusion film layer and one surface of the base material subjected to corona treatment, and carrying out calendaring and knurling on the co-extrusion film layer to form a composite film with decorative functional patterns; the composite device comprises a rubber roller and a knurled cooling roller which are matched, the composite pressure between the rubber roller and the knurled cooling roller is 2-5 MPa, the water temperature of the cooling roller is 15-25 ℃, and the traction speed of the composite device is 5-200 m/min;
(4) sending the primarily compounded composite membrane into a shaping device, and further fixing the pattern on the surface of the composite membrane; wherein the rolling tension of the foamed three-dimensional relief composite membrane is generally 80-300N;
(5) and cutting off the unstable edge of the composite membrane, and then rolling by a rolling mechanism.
The principle of the foaming three-dimensional relief composite membrane and the manufacturing process thereof is as follows: firstly, adding a foaming layer on a bonding layer, wherein the foaming layer generates a cellular structure, so that a molecular chain of the bonding layer can easily generate strong binding force with the foaming layer through the cellular structure, and the structures of all layers in a finished product are not easy to separate; secondly, the foaming layer and the bonding layer are formed at one time by adopting a co-extrusion forming mode, so that the multi-layer structure forming the co-extrusion film layer is formed in one step on the basis of realizing respective functions, very strong binding force is provided between layers, and meanwhile, no organic solvent is required to be added, and the purpose of environmental protection is achieved.
The prepared foaming three-dimensional relief composite membrane has lighter weight, is easy to be adhered to a wall, is not easy to deform, has clear patterns and can absorb sound. In particular, the foaming three-dimensional relief composite film does not volatilize substances which are harmful to human health, such as plasticizer, organic solvent, formaldehyde and the like, even if the film is used for a long time.
Example 2
The embodiment provides a three-dimensional relief (sculpture) composite membrane of foaming, including substrate, bond line, foaming layer and the functional layer that connects gradually, wherein, bond line, foaming layer and functional layer adopt crowded mode one shot forming to be crowded membrane layer altogether, and crowded rete and substrate are compound fixed altogether.
The base material is one of cloth, non-woven fabric, grid fiber cloth, paper, a plastic film, an aluminized film or a metal foil, and the thickness of the base material is 10-230 microns. In this example, a cloth base material having a thickness of about 150 μm was used.
The main component of the adhesive layer is one or more of low density polyethylene, linear low density polyethylene, high density polyethylene, ethylene-acrylic acid copolymer or ethylene-methacrylic acid copolymer. In this example, a mixture of low density polyethylene and ethylene-acrylic acid copolymer in a weight ratio of 90:10 is used.
The thickness of the foaming layer is 200 to 4000 μm, about 2000 μm in this embodiment.
In this example, the foaming layer comprises the following main components in parts by weight:
84 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene and ethylene-vinyl acetate copolymer;
13.5 parts of inorganic filler;
2 parts of color master batch;
0.5 part of flame retardant.
The functional layer comprises the following main components in parts by weight:
78 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene and polypropylene; in the embodiment, 78 parts of the mixture of the low-density polyethylene and the ethylene-acrylic acid copolymer in the weight part ratio of 90:10 is adopted;
10 parts of inorganic filler;
12 parts of functional master batch.
The inorganic filler is one or more of titanium dioxide, ferric oxide, calcium carbonate, talcum powder and kaolin. Calcium carbonate is used in this example.
The functional master batch is one or more of antistatic master batch, pearlescent master batch, antibacterial master batch, flame retardant master batch, weather-resistant master batch, aromatic master batch, fluorescent master batch, release master batch and the like. In this example, a mixture of a flame retardant masterbatch and an antimicrobial masterbatch was used.
The manufacturing process of the foaming three-dimensional relief composite membrane based on the extrusion compounding machine comprises the following steps:
(1) the unwinding mechanism discharges the base material, and the surface of the base material is subjected to corona treatment through a corona device; the unreeling tension of the base material is generally 50-300N, and the corona power of the corona device is generally more than or equal to 4000W;
(2) the first extruder, the second extruder and the third extruder are used for forming the bonding layer, the foaming layer and the functional layer in one step through a co-extrusion die head, the bonding layer, the foaming layer and the functional layer form an integrated co-extruded film, and liquid gas is injected into the second extruder for extruding the foaming layer in the forming process; wherein the cylinder temperature of the first extruder is 160-330 ℃, the cylinder temperature of the second extruder is 160-330 ℃, and the cylinder temperature of the third extruder is 160-330 ℃; the co-extrusion die head is a three-manifold co-extrusion die head, and the temperature of the co-extrusion die head is 200-330 ℃;
(3) the compounding device is used for carrying out primary compounding on the co-extrusion film layer and one surface of the base material subjected to corona treatment, and carrying out calendaring and knurling on the co-extrusion film layer to form a composite film with decorative functional patterns; the composite device comprises a rubber roller and a knurled cooling roller which are matched, the composite pressure between the rubber roller and the knurled cooling roller is 2-5 MPa, the water temperature of the cooling roller is 15-25 ℃, and the traction speed of the composite device is 5-200 m/min;
(4) sending the primarily compounded composite membrane into a shaping device, and further fixing the pattern on the surface of the composite membrane; wherein the rolling tension of the foamed three-dimensional relief composite membrane is generally 80-300N;
(5) and cutting off the unstable edge of the composite membrane, and then rolling by a rolling mechanism.
The principle of the foaming three-dimensional relief composite membrane and the manufacturing process thereof is as follows: firstly, a foaming layer is added between the functional layer and the bonding layer, the foaming layer generates a cellular structure, and molecular chains of the functional layer and the bonding layer easily generate strong binding force with the foaming layer through the cellular structure, so that a finished product is not easy to separate; secondly, the functional layer, the foaming layer and the bonding layer are formed in one step by adopting a co-extrusion forming mode, so that the multi-layer structure forming the co-extrusion film layer is formed in one step on the basis of realizing respective functions, very strong binding force is provided between layers, and meanwhile, organic solvents are not required to be added, and the purpose of environmental protection is achieved.
The prepared foaming three-dimensional relief composite membrane has lighter weight, is easy to be adhered to a wall, is not easy to deform, has clear patterns and is mildew-proof. In particular, the foaming three-dimensional relief composite film does not volatilize substances which are harmful to human health, such as plasticizer, organic solvent, formaldehyde and the like, even if the film is used for a long time.
As mentioned above, the present invention can be better realized, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present disclosure are intended to be covered by the scope of the claims of the present invention.

Claims (10)

1. The foamed three-dimensional relief composite membrane based on the extrusion compounding machine is characterized by comprising a base material, an adhesive layer and a foaming layer which are sequentially connected, wherein the adhesive layer and the foaming layer are formed into a co-extrusion membrane layer in a co-extrusion mode in one step, and the co-extrusion membrane layer and the base material are compounded and fixed.
2. The foamed three-dimensional relief composite film based on the extrusion lamination machine as claimed in claim 1, wherein the composite film further comprises a functional layer, and the base material, the adhesive layer, the foaming layer and the functional layer are sequentially connected, wherein the adhesive layer, the foaming layer and the functional layer are formed into a co-extrusion film layer in a co-extrusion manner at one step, and the co-extrusion film layer and the base material are compositely fixed.
3. The foamed three-dimensional embossed composite film based on the extrusion compounding machine according to claim 1 or 2, wherein the base material is one of cloth, non-woven fabric, grid fiber cloth, paper, plastic film, aluminized film or metal foil, and the thickness of the base material is 10-230 μm.
4. The foamed three-dimensional relief composite film according to claim 1 or 2, wherein the main component of the adhesive layer is one or more of low density polyethylene, linear low density polyethylene, high density polyethylene, ethylene-acrylic acid copolymer or ethylene-methacrylic acid copolymer.
5. The foamed three-dimensional relief composite film based on the extrusion compounding machine according to claim 1 or 2, wherein the thickness of the foamed layer is 200-4000 μm; the foaming layer comprises the following main components in parts by weight:
53-100 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene and ethylene-vinyl acetate copolymer;
0-30 parts of inorganic filler;
0-10 parts of color master batch;
0-7 parts of a flame retardant.
6. The foamed three-dimensional relief composite film based on the extrusion compounding machine as claimed in claim 5, wherein the foamed layer comprises the following main components in parts by weight:
71-99.5 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene and ethylene-vinyl acetate copolymer;
0-16 parts of an inorganic filler;
0-8 parts of color master batch;
0.5-5 parts of a flame retardant.
7. The foamed three-dimensional relief composite film based on the extrusion compounding machine as claimed in claim 2, wherein the functional layer comprises the following main components in parts by weight:
50-98 parts of one or more of low-density polyethylene, linear low-density polyethylene, high-density polyethylene and polypropylene;
0-30 parts of inorganic filler;
2-20 parts of functional master batch.
8. The foamed three-dimensional relief composite film based on the extrusion compounding machine according to claim 6 or 7, wherein the inorganic filler is one or more of titanium dioxide, iron oxide, calcium carbonate, talcum powder and kaolin;
the functional master batch is one or more of antistatic master batch, pearlescent master batch, antibacterial master batch, flame-retardant master batch, weather-resistant master batch, aromatic master batch, fluorescent master batch or release master batch.
9. The manufacturing process of the foamed three-dimensional relief composite membrane based on the extrusion compounding machine is characterized by comprising the following steps:
(1) the unwinding mechanism discharges the base material, and the surface of the base material is subjected to corona treatment through a corona device;
(2) the first extruder and the second extruder are used for forming the bonding layer and the foaming layer in one step through a co-extrusion die head, the bonding layer and the foaming layer form an integrated co-extruded film layer, and liquid gas is injected into the second extruder for extruding the foaming layer in the forming process;
(3) the compounding device is used for carrying out primary compounding on the co-extrusion film layer and one surface of the base material subjected to corona treatment, and carrying out calendaring and knurling on the co-extrusion film layer to form a composite film with decorative functional patterns;
(4) sending the primarily compounded composite membrane into a shaping device, and further fixing the pattern on the surface of the composite membrane;
(5) and cutting off the unstable edge of the composite membrane, and then rolling by a rolling mechanism.
10. The manufacturing process of the foamed three-dimensional relief composite film based on the extrusion compounding machine as claimed in claim 9, wherein when the composite film further has a functional layer, the step (2) is: the first extruder, the second extruder and the third extruder are used for forming the bonding layer, the foaming layer and the functional layer in one step through a co-extrusion die head, the bonding layer, the foaming layer and the functional layer form an integrated co-extruded film, and liquid gas is injected into the second extruder for extruding the foaming layer in the forming process.
CN202110318400.7A 2021-03-25 2021-03-25 Foaming three-dimensional relief composite membrane based on extrusion compounding machine and manufacturing process thereof Pending CN113071173A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110804402A (en) * 2019-11-18 2020-02-18 江门市辉隆塑料机械有限公司 Environment-friendly light adhesive tape and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110804402A (en) * 2019-11-18 2020-02-18 江门市辉隆塑料机械有限公司 Environment-friendly light adhesive tape and preparation method thereof

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Title
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Application publication date: 20210706