CN113172975A - Multilayer composite co-extrusion film and manufacturing process thereof - Google Patents
Multilayer composite co-extrusion film and manufacturing process thereof Download PDFInfo
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- CN113172975A CN113172975A CN202110368480.7A CN202110368480A CN113172975A CN 113172975 A CN113172975 A CN 113172975A CN 202110368480 A CN202110368480 A CN 202110368480A CN 113172975 A CN113172975 A CN 113172975A
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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
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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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
- B32B27/06—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
- B32B27/08—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 synthetic resin
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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
- B32B27/06—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
- B32B27/10—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 paper or cardboard
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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
- B32B29/00—Layered products comprising a layer of paper or cardboard
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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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
- 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
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- 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
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- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- 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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- 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
- C08K3/34—Silicon-containing compounds
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- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a multilayer composite co-extrusion film and a manufacturing process thereof, wherein the multilayer composite co-extrusion film comprises a first film layer, a second film layer and a third film layer, wherein the second film layer is arranged between the first film layer and the third film layer; the first film layer is prepared from the following raw materials in percentage by weight: 55-65% of PBAT, 5-15% of talcum powder, 20-30% of corn starch and 4-10% of chain extender; the second film layer is prepared from the following raw materials in percentage by weight: 55-65% of PBAT, 5-15% of talcum powder, 20-30% of corn starch and 4-10% of chain extender; the third film layer is prepared from the following raw materials in percentage by weight: 85-95% of PBAT, 3-10% of talcum powder, 0.5-1.5% of flatting agent and 2-9% of chain extender.
Description
Technical Field
The invention relates to a multilayer composite co-extrusion film and a manufacturing process thereof.
Background
The plastic film is a common daily product for people at present, has the advantages of good transparency, good moisture resistance, excellent heat resistance, convenient use and the like, and is widely applied to various industries. However, the plastic film in the market at present is mainly made of polyethylene, has a single style, cannot meet the requirements of some special fields, and is easy to cause environmental pollution due to the large amount of the film.
Disclosure of Invention
The invention provides a multilayer composite co-extrusion film and a manufacturing process thereof, aiming at the problems pointed out in the background art, wherein the multilayer composite co-extrusion film is low in production cost and can be naturally degraded after being discarded.
The technical scheme of the invention is realized as follows:
a multilayer composite co-extrusion film comprises a first film layer, a second film layer and a third film layer, wherein the second film layer is arranged between the first film layer and the third film layer; the first film layer is prepared from the following raw materials in percentage by weight: PBAT 55-65%, talcum powder 5-15%, corn starch 20-30%, and chain extender 4-10%; the second film layer is prepared from the following raw materials in percentage by weight: 55-65% of PBAT, 5-15% of talcum powder, 20-30% of corn starch and 4-10% of chain extender; the third film layer is prepared from the following raw materials in percentage by weight: 85-95% of PBAT, 3-10% of talcum powder, 0.5-1.5% of flatting agent and 2-9% of chain extender.
The invention is further provided that the first film layer is prepared from the following raw materials in percentage by weight: PBAT 60%, talcum powder 510%, corn starch 25% and chain extender 5%; the second film layer is prepared from the following raw materials in percentage by weight: 60% of PBAT, 510% of talcum powder, 25% of corn starch and 5% of chain extender; the third film layer is prepared from the following raw materials in percentage by weight: 90% of PBAT, 5% of talcum powder, 1% of flatting agent and 4% of chain extender.
The invention is further arranged in such a way that a plurality of through holes are distributed on the second film layer, the first film layer and the second film layer are bonded by glue, and the second film layer and the third film layer are bonded by glue.
The invention is further arranged in that a solidified resin layer is arranged between the first film layer and the second film layer, a solidified resin layer is arranged between the second film layer and the third film layer, glue is mixed in the liquid resin layer, and the solidified resin layer is formed after the resin layer is solidified.
The invention is further provided with a paper layer arranged between the first film layer and the second film layer, a paper layer arranged between the second film layer and the third film layer, a plurality of through holes distributed on the paper layer, and the paper layer connected with the first film layer, the second film layer and the third film layer through glue.
The invention is further provided with a mesh fabric layer arranged between the first film layer and the second film layer, a mesh fabric layer arranged between the second film layer and the third film layer, mesh holes arranged on the mesh fabric layer, and the mesh fabric layer connected with the first film layer, the second film layer and the third film layer through glue.
A process for making a multilayer composite co-extruded film, the multilayer composite co-extruded film of claim 4, comprising the steps of:
step one, preparing preparation raw materials of a first film layer, a second film layer and a third film layer, and mixing the three preparation raw materials uniformly in a mixer in sequence to obtain three mixed materials, namely a first film layer mixed material, a second film layer mixed material and a third film layer mixed material;
step two, respectively melting the first film layer mixture, the second film layer mixture and the third film layer mixture, extruding the melted first film layer mixture, the second film layer mixture and the third film layer mixture from respective extruder heads, and then respectively entering respective corresponding film blowing machines to respectively prepare a first film layer, a second film layer and a third film layer;
step three, processing a plurality of through holes on the second film layer, wherein the through holes are uniformly distributed on the second film layer;
cutting the paper layer corresponding to the second film layer, and processing a plurality of through holes on the paper layer, wherein the through holes are uniformly distributed on the paper layer;
and fifthly, carrying out hot-pressing composite molding on the first film layer, the second film layer, the third film layer and the paper layer through a press roller, and sequentially arranging the first film layer, the paper layer, the second film layer, the paper layer and the third film layer from top to bottom, wherein glue is coated on two side surfaces of the paper layer, so as to obtain the composite co-extrusion film.
And step six, finally rolling, slitting and packaging.
By adopting the technical scheme, the invention has the beneficial effects that:
according to the multilayer composite co-extrusion film and the manufacturing process thereof, the multilayer composite co-extrusion film is mainly prepared by using PBAT as a raw material, so that the prepared film has good degradation capability, and the production cost of the film is reduced by using the raw material of corn starch.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is illustrated below with reference to fig. 1:
a multilayer composite co-extrusion film comprises a first film layer 1, a second film layer 2 and a third film layer 3, wherein the second film layer 2 is arranged between the first film layer 1 and the third film layer 3; the first film layer 1 is prepared from the following raw materials in percentage by weight: 55-65% of PBAT, 5-15% of talcum powder, 20-30% of corn starch and 4-10% of chain extender; the second film layer 2 is prepared from the following raw materials in percentage by weight: 55-65% of PBAT, 5-15% of talcum powder, 20-30% of corn starch and 4-10% of chain extender; the third film layer 3 is prepared from the following raw materials in percentage by weight: 85-95% of PBAT, 3-10% of talcum powder, 0.5-1.5% of flatting agent and 2-9% of chain extender.
The first film layer 1 is prepared from the following raw materials in percentage by weight: 60% of PBAT, 510% of talcum powder, 25% of corn starch and 5% of chain extender; the second film layer 2 is prepared from the following raw materials in percentage by weight: 60% of PBAT, 510% of talcum powder, 25% of corn starch and 5% of chain extender; the third film layer 3 is prepared from the following raw materials in percentage by weight: 90% of PBAT, 5% of talcum powder, 1% of flatting agent and 4% of chain extender.
Wherein, second rete 2 on distribute and have a plurality of through-holes, bond through glue between first rete 1 and the second rete 2, bond through glue between second rete 2 and the third rete 3.
Wherein, be equipped with the solidification resin layer between first rete 1 and second rete 2, be equipped with the solidification resin layer between second rete 2 and the third rete 3, glue mixes in liquid resin layer to form the solidification resin layer after the resin layer solidification.
Wherein, first rete 1 and second rete 2 between be equipped with ply 4, be equipped with ply 4 between second rete 2 and the third rete 3, ply 4 on distribute and have a plurality of through-holes, ply 4 passes through glue and is connected with first rete 1, second rete 2, third rete 3.
Wherein, be equipped with the granny rag layer between first rete 1 and the second rete 2, be equipped with the granny rag layer between second rete 2 and the third rete 3, the granny rag layer on have the mesh hole, the granny rag layer is connected with first rete 1, second rete 2, third rete 3 through glue.
A process for making a multilayer composite co-extruded film, the multilayer composite co-extruded film of claim 4, comprising the steps of:
step one, preparing preparation raw materials of a first film layer 1, a second film layer 2 and a third film layer 3, and mixing the three preparation raw materials uniformly in a mixer in sequence to obtain three mixed materials, namely a first film layer 1 mixed material, a second film layer 2 mixed material and a third film layer 3 mixed material;
step two, respectively melting the mixture of the first film layer 1, the mixture of the second film layer 2 and the mixture of the third film layer 3, extruding the mixture from respective extruder heads, and then respectively entering respective corresponding film blowing machines to respectively prepare the first film layer 1, the second film layer 2 and the third film layer 3;
step three, processing a plurality of through holes on the second film layer 2, wherein the through holes are uniformly distributed on the second film layer 2;
cutting the paper layer 4 corresponding to the second film layer 2, and processing a plurality of through holes on the paper layer 4, wherein the through holes are uniformly distributed on the paper layer 4;
and step five, carrying out hot-pressing composite molding on the first film layer 1, the second film layer 2, the third film layer 3 and the paper layer 4 through a press roller, sequentially arranging the first film layer 1, the paper layer 4, the second film layer 2, the paper layer 4 and the third film layer 3 from top to bottom, and coating glue on two side surfaces of the paper layer 4 to obtain the composite co-extrusion film.
And step six, finally rolling, slitting and packaging.
By adopting the technical scheme, the invention has the beneficial effects that:
according to the multilayer composite co-extrusion film and the manufacturing process thereof, the multilayer composite co-extrusion film is mainly prepared by using PBAT as a raw material, so that the prepared film has good degradation capability, and the production cost of the film is reduced by using the raw material of corn starch.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A multilayer composite co-extruded film is characterized in that: the film comprises a first film layer, a second film layer and a third film layer, wherein the second film layer is arranged between the first film layer and the third film layer; the first film layer is prepared from the following raw materials in percentage by weight: 55-65% of PBAT, 5-15% of talcum powder, 20-30% of corn starch and 4-10% of chain extender; the second film layer is prepared from the following raw materials in percentage by weight: 55-65% of PBAT, 5-15% of talcum powder, 20-30% of corn starch and 4-10% of chain extender; the third film layer is prepared from the following raw materials in percentage by weight: 85-95% of PBAT, 3-10% of talcum powder, 0.5-1.5% of flatting agent and 2-9% of chain extender.
2. The multilayer composite coextruded film of claim 1, wherein: the first film layer is prepared from the following raw materials in percentage by weight: 60% of PBAT, 510% of talcum powder, 25% of corn starch and 5% of chain extender; the second film layer is prepared from the following raw materials in percentage by weight: 60% of PBAT, 510% of talcum powder, 25% of corn starch and 5% of chain extender; the third film layer is prepared from the following raw materials in percentage by weight: 90% of PBAT, 5% of talcum powder, 1% of flatting agent and 4% of chain extender.
3. The multilayer composite coextruded film of claim 2, wherein: the second film layer is distributed with a plurality of through holes, the first film layer and the second film layer are bonded through glue, and the second film layer and the third film layer are bonded through glue.
4. The multilayer composite coextruded film of claim 3, wherein: and a curing resin layer is arranged between the first film layer and the second film layer, a curing resin layer is arranged between the second film layer and the third film layer, and the glue is mixed in the liquid resin layer and forms a curing resin layer after the resin layer is cured.
5. The multilayer composite coextruded film of claim 3, wherein: the paper layer is arranged between the first film layer and the second film layer, the paper layer is arranged between the second film layer and the third film layer, a plurality of through holes are distributed in the paper layer, and the paper layer is connected with the first film layer, the second film layer and the third film layer through glue water.
6. The multilayer composite coextruded film of claim 3, wherein: the first film layer and the second film layer are provided with a mesh layer therebetween, the second film layer and the third film layer are provided with mesh holes therebetween, and the mesh layer is connected with the first film layer, the second film layer and the third film layer through glue.
7. A process for making a multilayer coextruded film, as claimed in claim 5, comprising the steps of:
step one, preparing preparation raw materials of a first film layer, a second film layer and a third film layer, and mixing the three preparation raw materials uniformly in a mixer in sequence to obtain three mixed materials, namely a first film layer mixed material, a second film layer mixed material and a third film layer mixed material;
step two, respectively melting the first film layer mixture, the second film layer mixture and the third film layer mixture, extruding the melted first film layer mixture, the second film layer mixture and the third film layer mixture from respective extruder heads, and then respectively entering respective corresponding film blowing machines to respectively prepare a first film layer, a second film layer and a third film layer;
step three, processing a plurality of through holes on the second film layer, wherein the through holes are uniformly distributed on the second film layer;
cutting the paper layer corresponding to the second film layer, and processing a plurality of through holes on the paper layer, wherein the through holes are uniformly distributed on the paper layer;
step five, carrying out hot-pressing composite molding on the first film layer, the second film layer, the third film layer and the paper layer through a press roller, and sequentially arranging the first film layer, the paper layer, the second film layer, the paper layer and the third film layer from top to bottom, wherein glue is coated on two side surfaces of the paper layer to obtain a composite co-extrusion film;
and step six, finally rolling, slitting and packaging.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115946422A (en) * | 2023-03-15 | 2023-04-11 | 江苏苏美达成套设备工程有限公司 | Degradation-controllable PBAT-based biodegradable mulching film and preparation and use methods thereof |
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Application publication date: 20210727 |