CN110343324A - Degradable label film and preparation method thereof - Google Patents
Degradable label film and preparation method thereof Download PDFInfo
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- CN110343324A CN110343324A CN201910662256.1A CN201910662256A CN110343324A CN 110343324 A CN110343324 A CN 110343324A CN 201910662256 A CN201910662256 A CN 201910662256A CN 110343324 A CN110343324 A CN 110343324A
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- 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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
- C08J2323/08—Copolymers of ethene
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- 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
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- 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
- C08J2423/06—Polyethene
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- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- 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
- C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- 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
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The present invention provides a kind of degradable label films and preparation method thereof.Degradable label film, its raw material is by percentage to the quality, comprising: high density polyethylene (HDPE) 10-25%, metallocene linear-low density polyethylene 30-50%, PLA-PEG copolymer 5-10%, polylactic acid-amino acid copolymer 5-10%, polylactic acid 20-35% and polycaprolactone 3-5%.The preparation method of degradable label film: polylactic acid and polycaprolactone mixing, heating melting obtain the first blend；High density polyethylene (HDPE), metallocene linear-low density polyethylene mixing, heating melting obtain the second blend；PLA-PEG copolymer, polylactic acid-amino acid copolymer mixing, heating melting obtain third blend；First, second, third blend is mixed, the fusion plastification in screw extruder, by dandy roll, successively carries out trimming and sided corona treatment after cooling down and being formed again.Degradable label film, degradation speed are fast.
Description
Technical field
The present invention relates to label film fields, in particular to a kind of degradable label film and preparation method thereof.
Background technique
Traditional label film is generally made using polyethylene, easy to use, at low cost, once emerging i.e. by people's
Greatly welcome.But as the raising of people's environmental consciousness and polyethylene product get worse the harm of environment, especially
It a series of the problems such as soil, water, biological chain brought by degradation cycle is long, is more paid close attention to by people.
Polylactic acid becomes a kind of good polyethylene substitute due to its good degradability, but its cost compared with
Polyethylene is much higher, and its certain performance is unable to reach the level of polyethylene.Therefore, a kind of comprehensive polyethylene and poly- cream are developed
The degradable label film of sour superperformance becomes one of the emphasis of people's research and development.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of degradable label film, and degradation speed is fast, mechanical performance and glossiness
It is high.
The second object of the present invention is to provide a kind of preparation method of degradable label film, simple process, product quality
Height, it is at low cost.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of degradable label film, raw material is by percentage to the quality, comprising: high density polyethylene (HDPE) 10-25%, metallocene
Linear low density polyethylene 30-50%, PLA-PEG copolymer 5-10%, polylactic acid-amino acid copolymer 5-
10%, polylactic acid 20-35% and polycaprolactone 3-5%.
It should be noted that the amino acid in polylactic acid-amino acid copolymer include lysine, aspartic acid, serine,
One of cysteine is a variety of.
Preferably, the degradable label film further includes by percentage to the quality prodegradant 0.5-1%, the drop
Enzymolysis auxiliary agent, by percentage to the quality, including montmorillonite powder 30-50%, bamboo fibre powder 20-40%, Aluminate 20-30% and burnt phosphorus
Sour 3-5%.
It is further preferred that the partial size of the montmorillonite powder is 100-300nm, the length of the bamboo fibre powder is 1-10 μm.
Preferably, the degradable label film further includes by percentage to the quality polypropylene carbonate 1-3%.
Preferably, the degradable label film further includes by percentage to the quality starch 1-3%.
Optionally, the degradable label film with a thickness of 60-80 μm.
A kind of preparation method of the degradable label film, comprising the following steps:
Polylactic acid and polycaprolactone are mixed, heating melting obtains the first blend；
High density polyethylene (HDPE), metallocene linear-low density polyethylene are mixed, heating melting obtains the second blend；
PLA-PEG copolymer, polylactic acid-amino acid copolymer are mixed, heating melting obtains third blending
Object；
First blend, second blend, the third blend are mixed, melted in screw extruder
Plasticizing successively carries out trimming and sided corona treatment again, obtains the degradable label film by dandy roll after cooling down and being formed.
Preferably, before first blend, second blend, third blend mixing further include:
It is crushed after first blend, second blend, the third blend are cooled down respectively.
It is further preferred that the partial size for crushing obtained substance is 1-5 μm.
Optionally, the dandy roll include in parallel to the mirror surface steel rider of pressure and fine grinding mastic roller, the fine grinding mastic roller
Surface fineness degree is 800-1200 mesh.
Compared with prior art, the invention has the benefit that
(1) degradable label film provided by the present application, degradation speed is fast, good mechanical property；
(2) preparation method of label film provided by the present application, simple process, product quality is high, label film gloss obtained
Degree is high.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
Stock:
Take high density polyethylene (HDPE) 10kg, metallocene linear-low density polyethylene 50kg, PLA-PEG copolymer
10kg, polylactic acid-amino acid copolymer 5kg, polylactic acid 20kg and polycaprolactone 5kg, and raw material is done into dust removal process.
Preparation:
Polylactic acid and polycaprolactone are mixed, heating melting obtains the first blend；
High density polyethylene (HDPE), metallocene linear-low density polyethylene are mixed, heating melting obtains the second blend；
PLA-PEG copolymer, polylactic acid-amino acid copolymer are mixed, heating melting obtains third blending
Object；
First blend, the second blend, third blend are mixed, then the fusion plastification in screw extruder passes through
Crossing dandy roll, (dandy roll includes in parallel to the mirror surface steel rider of pressure and fine grinding mastic roller, and the surface fineness degree of fine grinding mastic roller is 800
Mesh), successively (sided corona treatment power is 800W, line speed 50m/ for progress trimming and sided corona treatment again after cooling down and being formed
Min), the degradable label film with a thickness of 60 μm is obtained.
Embodiment 2
Stock:
Take high density polyethylene (HDPE) 25kg, metallocene linear-low density polyethylene 30kg, PLA-PEG copolymer
5kg, polylactic acid-amino acid copolymer 10kg, polylactic acid 26kg and polycaprolactone 3kg, and raw material is done into dust removal process.
Prepare the prodegradant of 1kg, wherein montmorillonite powder 30%, bamboo fibre powder 40%, Aluminate 25% and pyrophosphoric acid
5%, the partial size of montmorillonite powder is 100-300nm, and the length of bamboo fibre powder is 1-10 μm.
Preparation:
Polylactic acid and polycaprolactone are mixed, heating melting obtains the first blend；
High density polyethylene (HDPE), metallocene linear-low density polyethylene are mixed, heating melting obtains the second blend；
PLA-PEG copolymer, polylactic acid-amino acid copolymer are mixed, heating melting obtains third blending
Object；
First blend, the second blend, third blend and prodegradant are mixed, modeling is melted in screw extruder
Change, then by dandy roll, (dandy roll includes in parallel to the mirror surface steel rider of pressure and fine grinding mastic roller, and the surface of fine grinding mastic roller is thick
Fineness is 1200 mesh), successively (sided corona treatment power is 800W, production line for progress trimming and sided corona treatment again after cooling down and being formed
Speed 50m/min), obtain the degradable label film with a thickness of 80 μm.
Embodiment 3
Stock:
Take high density polyethylene (HDPE) 13kg, metallocene linear-low density polyethylene 33kg, PLA-PEG copolymer
6kg, polylactic acid-amino acid copolymer 7.5kg, polylactic acid 35kg, polycaprolactone 4kg and polypropylene carbonate 1kg, and by raw material
Do dust removal process.
Prepare the prodegradant of 0.5kg, wherein montmorillonite powder 47%, bamboo fibre powder 20%, Aluminate 30% and pyrophosphoric acid
3%, the partial size of montmorillonite powder is 100-300nm, and the length of bamboo fibre powder is 1-10 μm.
Preparation:
Polylactic acid, polycaprolactone and poly- trimethylene carbonic acid are mixed, heating melting obtains the first blend；
High density polyethylene (HDPE), metallocene linear-low density polyethylene are mixed, heating melting obtains the second blend；
PLA-PEG copolymer, polylactic acid-amino acid copolymer are mixed, heating melting obtains third blending
Object；
First blend, the second blend, third blend and prodegradant are mixed, modeling is melted in screw extruder
Change, then by dandy roll, (dandy roll includes in parallel to the mirror surface steel rider of pressure and fine grinding mastic roller, and the surface of fine grinding mastic roller is thick
Fineness is 1000 mesh), successively (sided corona treatment power is 800W, production line for progress trimming and sided corona treatment again after cooling down and being formed
Speed 50m/min), obtain the degradable label film with a thickness of 70 μm.
Embodiment 4
Stock:
Take high density polyethylene (HDPE) 10kg, metallocene linear-low density polyethylene 38kg, PLA-PEG copolymer
7.2kg, polylactic acid-amino acid copolymer 5kg, polylactic acid 30kg, polycaprolactone 5kg, polypropylene carbonate 3kg and starch 1kg,
And raw material is done into dust removal process.
Prepare the prodegradant of 0.8kg, wherein montmorillonite powder 50%, bamboo fibre powder 26%, Aluminate 20% and pyrophosphoric acid
4%, the partial size of montmorillonite powder is 100-300nm, and the length of bamboo fibre powder is 1-10 μm.
Preparation:
Polylactic acid, polycaprolactone, poly- trimethylene carbonic acid and starch are mixed, heating melting obtains the first blend；
High density polyethylene (HDPE), metallocene linear-low density polyethylene are mixed, heating melting obtains the second blend；
PLA-PEG copolymer, polylactic acid-amino acid copolymer are mixed, heating melting obtains third blending
Object；
First blend, the second blend, third blend and prodegradant are mixed, modeling is melted in screw extruder
Change, then by dandy roll, (dandy roll includes in parallel to the mirror surface steel rider of pressure and fine grinding mastic roller, and the surface of fine grinding mastic roller is thick
Fineness is 900 mesh), it is cooling and successively carry out trimming and sided corona treatment after being formed again (sided corona treatment power is 800W, produces linear speed
Spend 50m/min), obtain the degradable label film with a thickness of 65 μm.
Embodiment 5
Stock:
Take high density polyethylene (HDPE) 15.4kg, metallocene linear-low density polyethylene 40kg, PLA-PEG copolymer
8kg, polylactic acid-amino acid copolymer 6kg, polylactic acid 22kg, polycaprolactone 3kg, polypropylene carbonate 2kg and starch 3kg, and
Raw material is done into dust removal process.
Prepare the prodegradant of 0.6kg, wherein montmorillonite powder 35%, bamboo fibre powder 35%, Aluminate 26% and pyrophosphoric acid
4%, the partial size of montmorillonite powder is 100-300nm, and the length of bamboo fibre powder is 1-10 μm.
Preparation:
Polylactic acid, polycaprolactone, poly- trimethylene carbonic acid and starch are mixed, heating melting obtains the first blend；
High density polyethylene (HDPE), metallocene linear-low density polyethylene are mixed, heating melting obtains the second blend；
PLA-PEG copolymer, polylactic acid-amino acid copolymer are mixed, heating melting obtains third blending
Object；
It is crushed after first blend, the second blend, third blend are cooled to room temperature, controls 1-5 μm of partial size, then
It is mixed with prodegradant, the fusion plastification in screw extruder, then by dandy roll, (dandy roll includes the mirror surface to pressure in parallel
Steel rider and fine grinding mastic roller, the surface fineness degree of fine grinding mastic roller are 800 mesh), it is cooling and successively carried out after being formed again trimming and
Sided corona treatment (sided corona treatment power is 800W, line speed 50m/min), obtains the degradable label film with a thickness of 75 μm.
Embodiment 6
Stock:
Take high density polyethylene (HDPE) 20kg, metallocene linear-low density polyethylene 31kg, PLA-PEG copolymer
9kg, polylactic acid-amino acid copolymer 8kg, polylactic acid 25kg, polycaprolactone 3.3kg, polypropylene carbonate 1.5kg and starch
1.5kg, and raw material is done into dust removal process.
Prepare the prodegradant of 0.7kg, wherein montmorillonite powder 45%, bamboo fibre powder 25%, Aluminate 25% and pyrophosphoric acid
5%, the partial size of montmorillonite powder is 100-300nm, and the length of bamboo fibre powder is 1-10 μm.
Preparation:
Polylactic acid, polycaprolactone, poly- trimethylene carbonic acid and starch are mixed, heating melting obtains the first blend；
High density polyethylene (HDPE), metallocene linear-low density polyethylene are mixed, heating melting obtains the second blend；
PLA-PEG copolymer, polylactic acid-amino acid copolymer are mixed, heating melting obtains third blending
Object；
It is crushed after first blend, the second blend, third blend are cooled to room temperature, controls 1-5 μm of partial size, then
It is mixed with prodegradant, the fusion plastification in screw extruder, then by dandy roll, (dandy roll includes the mirror surface to pressure in parallel
Steel rider and fine grinding mastic roller, the surface fineness degree of fine grinding mastic roller are 1000 mesh), it is cooling and successively carried out after being formed again trimming and
Sided corona treatment (sided corona treatment power is 800W, line speed 50m/min), obtains the degradable label film with a thickness of 80 μm.
Comparative example 1
Compared with Example 1, difference is, raw material only includes high density polyethylene (HDPE) and the poly- second of metallocene linear low density
Alkene.
Comparative example 2
Compared with Example 2, difference is, raw material only includes PLA-PEG copolymer, polylactic acid-amino acid
Copolymer, polylactic acid.
Comparative example 3
Compared with Example 3, difference is, raw material is free of polycaprolactone.
The label film that embodiment 1-6 and comparative example 1-3 are obtained carries out measuring mechanical property and glossiness, specific test knot
Fruit is as shown in table 1 below:
1 test result of table
By upper table 1 it is found that degradable label film provided by the present application, good mechanical property.
The label film that embodiment 1-6 and comparative example 1-3 are obtained, using be equivalent to ISO846-1997 " plastics-fungi and
The measurement of behavior-visual test method under bacterial action " Degrading experiment test is carried out, surplus is tested, specific test result is as follows
Shown in table 2:
2 Degrading experiment test result of table
In conjunction with table 1 and 2 it is found that the poly- second of polylactic acid-is added in high density polyethylene (HDPE), metallocene linear-low density polyethylene
Diol copolymer, polylactic acid-amino acid copolymer, polylactic acid and polycaprolactone can obtain on the basis of guaranteeing mechanical strength
Obtain the excellent label film of degradation property.Other than having both the common advantage of polyethylene and polylactic acid, two kinds of raw materials are also solved
Consistency problem when coexisting.
Degradable label film provided by the present application being capable of fast degradation on the basis of guaranteeing mechanical performance.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention
Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of degradable label film, which is characterized in that its raw material is by percentage to the quality, comprising: high density polyethylene (HDPE) 10-
25%, metallocene linear-low density polyethylene 30-50%, PLA-PEG copolymer 5-10%, polylactic acid-amino acid
Copolymer 5-10%, polylactic acid 20-35% and polycaprolactone 3-5%.
2. degradable label film according to claim 1, which is characterized in that further include that degradation helps by percentage to the quality
Agent 0.5-1%, the prodegradant, by percentage to the quality, including montmorillonite powder 30-50%, bamboo fibre powder 20-40%, aluminium
Acid esters 20-30% and pyrophosphoric acid 3-5%.
3. degradable label film according to claim 2, which is characterized in that the partial size of the montmorillonite powder is 100-
300nm, the length of the bamboo fibre powder are 1-10 μm.
4. degradable label film according to claim 1, which is characterized in that further include poly- trimethylene by percentage to the quality
Carbonic ester 1-3%.
5. degradable label film according to claim 1, which is characterized in that further include starch 1- by percentage to the quality
3%.
6. degradable label film according to claim 1-5, which is characterized in that the thickness of the degradable label film
Degree is 60-80 μm.
7. a kind of preparation method of degradable label film described in any one of claims 1-6, which is characterized in that including following step
It is rapid:
Polylactic acid and polycaprolactone are mixed, heating melting obtains the first blend；
High density polyethylene (HDPE), metallocene linear-low density polyethylene are mixed, heating melting obtains the second blend；
PLA-PEG copolymer, polylactic acid-amino acid copolymer are mixed, heating melting obtains third blend；
First blend, second blend, the third blend are mixed, modeling is melted in screw extruder
Change, by dandy roll, successively carries out trimming and sided corona treatment after cooling down and being formed again, obtain the degradable label film.
8. preparation method according to claim 7, which is characterized in that first blend, second blend, institute
State third blend mixing before further include:
It is crushed after first blend, second blend, the third blend are cooled down respectively.
9. preparation method according to claim 8, which is characterized in that the partial size for crushing obtained substance is 1-5 μm.
10. according to the described in any item preparation methods of claim 7-9, which is characterized in that the dandy roll includes in parallel to pressure
Mirror surface steel rider and fine grinding mastic roller, the surface fineness degree of the fine grinding mastic roller is 800-1200 mesh.
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