CN109435400A - A kind of multi-layer co-extrusion packaging film and preparation method thereof with papery feel - Google Patents

A kind of multi-layer co-extrusion packaging film and preparation method thereof with papery feel Download PDF

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Publication number
CN109435400A
CN109435400A CN201811414222.2A CN201811414222A CN109435400A CN 109435400 A CN109435400 A CN 109435400A CN 201811414222 A CN201811414222 A CN 201811414222A CN 109435400 A CN109435400 A CN 109435400A
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layer
polyolefin
ethylene copolymer
packaging film
extrusion packaging
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付进
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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
    • 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
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2439/00—Containers; Receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a kind of multi-layer co-extrusion packaging films with papery feel, are followed successively by surface layer, middle layer, internal layer from top to bottom；Middle layer is 1~7 layer；Surface layer is made of the component of following parts by weight: 0~80 part of polyolefin, 0~60 part of ethylene copolymer, and 15~35 parts of the resin containing imitative paper particle, 1~10 part of biodegradation agent；Middle layer is made of the component of following parts by weight: 0~90 part of polyolefin, 0~90 part of ethylene copolymer, 1~10 part of biodegradation agent；Internal layer is made of the component of following parts by weight: 0~80 part of polyolefin, 0~60 part of ethylene copolymer, 15~35 parts of the resin containing imitative paper particle, 1~10 part of biodegradation agent, polyolefin and ethylene copolymer are not zero simultaneously.Multi-layer co-extrusion packaging film provided by the invention has papery feel, does not generate electrostatic, waterproof, Color tunable section and non-discolouring, and the film is degradable, is environmental-friendly packaging material.

Description

A kind of multi-layer co-extrusion packaging film and preparation method thereof with papery feel
Technical field
The invention belongs to field of packaging material, and in particular to a kind of multi-layer co-extrusion packaging film with papery feel and Preparation method.
Background technique
In general, the plastic foil of gift and fresh flower packaging using wrapping paper or biaxial tension, wrapping paper is various informative, pattern Beauty, but itself is non-watertight, and the resting period can change colour long, influences the sensory effects of wrapping paper；And the plastics of biaxial tension Though film has waterproofness, its surface is smooth, matter is crisp, easy to produce static electricity, and the film non-degradable, and plastic packaging film is to environment Influence receive the concern of various circles of society.With the improvement of people's life quality, the requirement packed to gift and fresh flower is more next It is higher.
Summary of the invention
The first purpose of the invention is to provide a kind of multi-layer co-extrusion packaging films with papery feel.
A second object of the present invention is to provide the preparation sides of the multi-layer co-extrusion packaging film described in one kind with papery feel Method.
To achieve the goals above, The technical solution adopted by the invention is as follows:
The first aspect of the invention provides a kind of multi-layer co-extrusion packaging film with papery feel, from top to bottom successively For surface layer, middle layer, internal layer；
The middle layer is 1~7 layer；
The surface layer is made of the component of following parts by weight: 0~80 part of polyolefin, 0~60 part of ethylene copolymer, containing There are 15~35 parts of resin of imitative paper particle, 1~10 part of biodegradation agent, polyolefin and ethylene copolymer are not zero simultaneously；
The middle layer is made of the component of following parts by weight: 0~90 part of polyolefin, 0~90 part of ethylene copolymer, 1~10 part of biodegradation agent, polyolefin and ethylene copolymer are not zero simultaneously；
Or, the middle layer is made of the component of following parts by weight: 1~80 part of polyolefin, ethylene copolymer 1~80 Part；
The internal layer is made of the component of following parts by weight: 0~80 part of polyolefin, 0~60 part of ethylene copolymer, containing There are 15~35 parts of resin of imitative paper particle, 1~10 part of biodegradation agent, polyolefin and ethylene copolymer are not zero simultaneously.
The polyolefin is polyethylene, preferably linear low density polyethylene (LLDPE), melt index 1.5-2.4.
The ethylene copolymer is ethylene-vinyl acetate copolymer, and wherein the content of vinyl acetate is 10%-18%, Melt index is 0.1-1.
The resin containing imitative paper particle is based on inorganic imitative paper particle, to contain 0.5- using polyethylene as carrier The resin of 10% Masterbatch.
The biodegradation agent is starch-base biodegradation agent.
Polyolefin can be 0,40,45,50,55,60,65,70,75,80 part in the surface layer.
Ethylene copolymer can be 0,10,15,20,25,30,35,40,45,50,55,60 part in the surface layer.
Resin containing imitative paper particle in the surface layer can be 15,20,25,30,35 parts.
Biodegradation agent can be 1,2,3,4,5,6,7,8,9,10 part in the surface layer.
The middle layer is made of the component of following parts by weight: 0~90 part of polyolefin, 0~90 part of ethylene copolymer, 1~10 part of biodegradation agent, polyolefin and ethylene copolymer are not zero simultaneously；In the middle layer polyolefin can for 0,40,45, 50,55,60,65,70,75,80,85,90 parts.In the middle layer ethylene copolymer can for 0,40,45,50,55,60,65, 70,75,80,85,90 parts.Biodegradation agent can be 1,2,3,4,5,6,7,8,9,10 part in the middle layer.
The middle layer is made of the component of following parts by weight: 1~80 part of polyolefin, 1~80 part of ethylene copolymer； Polyolefin can be 1,40,45,50,55,60,65,70,75,80 part in the middle layer.Ethylene copolymer can in the middle layer It is 1,40,45,50,55,60,65,70,75,80 part.
Polyolefin can be 0,40,45,50,55,60,65,70,75,80 part in the internal layer.
Ethylene copolymer can be 0,10,15,20,25,30,35,40,45,50,55,60 part in the internal layer.
Resin containing imitative paper particle in the internal layer can be 15,20,25,30,35 parts.
Biodegradation agent can be 1,2,3,4,5,6,7,8,9,10 part in the internal layer.
The middle layer is 1,2,3,4,5,6,7 layer of structure, and middle layer point multilayer can be added.
The multi-layer co-extrusion packaging film with papery feel with a thickness of 50~120 microns.
The second aspect of the invention provides the preparation side of the multi-layer co-extrusion packaging film described in one kind with papery feel Method, comprising the following steps:
According to the proportion,
The material of extruder is added in polyolefin, ethylene copolymer, the resin containing imitative paper particle, biodegradation agent by surface layer In bucket 1, temperature melts under conditions of being 170~230 DEG C, into mouth mold；
Middle layer, by polyolefin, ethylene copolymer, biodegradation agent be added extruder hopper 2 in, temperature be 170~ It is melted under conditions of 230 DEG C, into mouth mold；
Or middle layer, polyolefin, ethylene copolymer are added in the hopper 2 of extruder, the item that temperature is 170~230 DEG C It is melted under part, into mouth mold；
The material of extruder is added in polyolefin, ethylene copolymer, the resin containing imitative paper particle, biodegradation agent by internal layer In bucket 3, temperature melts under conditions of being 170~230 DEG C, into mouth mold；
After coextrusion, cooling and shaping, multi-layer co-extrusion packaging film is carried out at two-sided corona using high-frequency high voltage Reason after cutting into required width as needed, is wound into winder, obtains the multi-layer co-extruded packaging with papery feel Film.
The third aspect of the invention provides the multi-layer co-extrusion packaging film described in one kind with papery feel for gift With the purposes of fresh flower packaging.
Due to the adoption of the above technical scheme, the present invention has the following advantages and beneficial effects:
Multi-layer co-extrusion packaging film provided by the invention with papery feel have papery feel, do not generate electrostatic, waterproof, Color tunable section and non-discolouring, and the film is degradable, is environmental-friendly packaging material.
Detailed description of the invention
Fig. 1 is the schematic diagram of multi-layer co-extrusion packaging film prepared by embodiment 1.
Fig. 2 is the schematic diagram of multi-layer co-extrusion packaging film prepared by embodiment 6.
Wherein: 11 be surface layer, and 12 be middle layer, and 121 be the first middle layer, and 122 be the second middle layer, and 123 is in thirds Interbed, 13 be internal layer.
Specific embodiment
In order to illustrate more clearly of the present invention, below with reference to preferred embodiment, the present invention is described further.Ability Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, this should not be limited with this The protection scope of invention.
Polyolefin used in the embodiment of the present invention is polyethylene, preferably linear low density polyethylene (LLDPE), melting Index is 1.5-2.4.
Ethylene copolymer used in the embodiment of the present invention is ethylene-vinyl acetate copolymer, wherein vinyl acetate Content is 10%-18%, melt index 0.1-1.
Resin containing imitative paper particle used in the embodiment of the present invention is using polyethylene as carrier, with inorganic imitative paper particle Based on, the resin containing 0.5-10% Masterbatch.
Biodegradation agent used in the embodiment of the present invention is starch-base biodegradation agent.
Embodiment 1
Prepare the multi-layer co-extrusion packaging film with papery feel with a thickness of 60 microns, comprising the following steps:
60 parts of melt index are contained the resin of imitative paper particle, 5 for the LLDPE of 1.5-2.4,35 parts of yellow colors by surface layer 11 Part biodegradation agent is added in the hopper 1 of extruder, and temperature melts under conditions of being 200 DEG C, into mouth mold；
The material of extruder is added in 90 parts of melt index by middle layer 12 for LLDPE, the 10 parts of biodegradation agents of 1.5-2.4 In bucket 2, temperature melts under conditions of being 200 DEG C, into mouth mold；
60 parts of melt index are contained the resin of imitative paper particle, 5 for the LLDPE of 1.5-2.4,35 parts of yellow colors by internal layer 13 Part biodegradation agent is added in the hopper 3 of extruder, and temperature melts under conditions of being 200 DEG C, into mouth mold；
Go out, by multilayer film coextrusion head by the tubular film of die extrusion, after air cooling and shaping, using high frequency Rate high voltage carries out two-sided sided corona treatment to multi-layer co-extrusion packaging film, after cutting into required width as needed, into winder Winding obtains the multi-layer co-extrusion packaging film with papery feel, as shown in Figure 1, Fig. 1 is that multilayer prepared by embodiment 1 is total Squeeze the schematic diagram of packaging film.
The formula of each component and dosage (being parts by weight) are shown in Table 1 in Examples 1 to 5:
Table 1
Embodiment 2
The multi-layer co-extrusion packaging film with papery feel with a thickness of 100 microns is prepared, is included the following steps (according to table 1 Middle dosage feeds intake):
LLDPE, yellow color are contained the resin of imitative paper particle, the hopper 1 of biodegradation agent addition extruder by surface layer 11 In, temperature melts under conditions of being 200 DEG C, into mouth mold；
Middle layer 12 ethylene copolymer, biodegradation agent is added in the hopper 2 of extruder, the condition that temperature is 170 DEG C Lower melting, into mouth mold；
LLDPE, yellow color are contained the resin of imitative paper particle, the hopper 3 of biodegradation agent addition extruder by internal layer 13 In, temperature melts under conditions of being 200 DEG C, into mouth mold；
Other steps are the same as embodiment 1.
Embodiment 3
The multi-layer co-extrusion packaging film with papery feel with a thickness of 100 microns is prepared, is included the following steps (according to table 1 Middle dosage feeds intake):
The hopper 1 of extruder is added in LLDPE, the yellow color resin containing imitative paper particle, biodegradation agent by surface layer 11 In, temperature melts under conditions of being 200 DEG C, into mouth mold；
Middle layer 12 ethylene copolymer, biodegradation agent is added in the hopper 2 of extruder, the condition that temperature is 170 DEG C Lower melting, into mouth mold；
The hopper 3 of extruder is added in LLDPE, the yellow color resin containing imitative paper particle, biodegradation agent by internal layer 13 In, temperature melts under conditions of being 200 DEG C, into mouth mold；
Other steps are the same as embodiment 1.
Embodiment 4
The multi-layer co-extrusion packaging film with papery feel with a thickness of 60 microns is prepared, is included the following steps (according in table 1 Dosage feeds intake):
LLDPE, ethylene copolymer, yellow color are contained resin, the biodegradation agent addition extrusion of imitative paper particle by surface layer 11 In the hopper 1 of machine, temperature melts under conditions of being 200 DEG C, into mouth mold；
LLDPE, ethylene copolymer, biodegradation agent are added in the hopper 2 of extruder middle layer 12, and temperature is 200 DEG C Under conditions of melt, into mouth mold；
LLDPE, ethylene copolymer, the yellow color resin containing imitative paper particle, biodegradation agent are added and squeeze out by internal layer 13 In the hopper 3 of machine, temperature melts under conditions of being 200 DEG C, into mouth mold；
Other steps are the same as embodiment 1.
Embodiment 5
The multi-layer co-extrusion packaging film with papery feel with a thickness of 60 microns is prepared, is included the following steps (according in table 1 Dosage feeds intake):
The material of extruder is added in yellow color resin containing imitative paper particle, ethylene copolymer, biodegradation agent by surface layer 11 In bucket 1, temperature melts under conditions of being 170 DEG C, into mouth mold；
Middle layer 12 ethylene copolymer, biodegradation agent is added in the hopper 2 of extruder, the condition that temperature is 170 DEG C Lower melting, into mouth mold；
The material of extruder is added in ethylene copolymer, the yellow color resin containing imitative paper particle, biodegradation agent by internal layer 13 In bucket 3, temperature melts under conditions of being 170 DEG C, into mouth mold；
Other steps are the same as embodiment 1.
Embodiment 6
A kind of multi-layer co-extrusion packaging film with papery feel is formulated following (being below parts by weight):
Surface layer 11: 50 parts of polyolefin (LLDPE), 20 parts of ethylene copolymer, 25 parts of the resin containing imitative paper particle, biology drop 5 parts of agent of solution；
First middle layer 121: 80 parts of polyolefin (LLDPE), 20 parts of ethylene copolymer；
Second middle layer 122: 70 parts of polyolefin (LLDPE), 20 parts of ethylene copolymer, 10 parts of biodegradation agent；
Third middle layer 123: 80 parts of polyolefin (LLDPE), 20 parts of ethylene copolymer；
Internal layer 13: 50 parts of polyolefin (LLDPE), 20 parts of ethylene copolymer, 25 parts of the resin containing imitative paper particle, biology drop 5 parts of agent of solution；
Formulation cost of the invention lower than the cost of embodiment 1 20%.
A kind of preparation method of the multi-layer co-extrusion packaging film with papery feel, comprising the following steps:
50 parts of melt index are the LLDPE of 1.5-2.4 by surface layer, 20 parts of ethylene copolymers, 25 parts contain imitative paper particle Resin, 5 parts of biodegradation agents are added in the hopper 1 of extruder, and temperature melts under conditions of being 200 DEG C, into mouth mold；
Extruder is added for LLDPE, the 20 parts of ethylene copolymers of 1.5-2.4 in 80 parts of melt index by the first middle layer In hopper 2, temperature melts under conditions of being 200 DEG C, into mouth mold；
Second middle layer, LLDPE, the 20 parts of ethylene copolymers, 10 parts of biodegrades for being 1.5-2.4 by 70 parts of melt index Agent is added in the hopper 3 of extruder, and temperature melts under conditions of being 200 DEG C, into mouth mold；
Extruder is added for LLDPE, the 20 parts of ethylene copolymers of 1.5-2.4 in 80 parts of melt index by third middle layer In hopper 4, temperature melts under conditions of being 200 DEG C, into mouth mold；
50 parts of melt index are the LLDPE of 1.5-2.4 by internal layer, 20 parts of ethylene copolymers, 25 parts contain imitative paper particle Resin, 5 parts of biodegradation agents are added in the hopper 5 of extruder, and temperature melts under conditions of being 200 DEG C, into mouth mold；
After multi-layer co-extruded, cooling and shaping, two-sided electricity is carried out to multi-layer co-extrusion packaging film using high-frequency high voltage Dizzy processing after cutting into required width as needed, is wound into winder, is obtained described multi-layer co-extruded with papery feel Packaging film, as shown in Fig. 2, Fig. 2 is the schematic diagram of multi-layer co-extrusion packaging film prepared by embodiment 6.
Comparative example 1
Surface layer: polyethylene 100%；
Middle layer: polyethylene 100%；
Internal layer: polyethylene 100%；
Coextrusion is melted under conditions of being 200 DEG C by above three layers of temperature, obtains packaging film.
The performance test results of the multi-layer co-extrusion packaging film with papery feel of Examples 1 to 6 preparation are as shown in table 2, From Table 2, it can be seen that Examples 1 to 6 preparation the multi-layer co-extrusion packaging film with papery feel compared with comparative example 1, Surface roughness and pliability are closer to paper wrapper.
Table 2
Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Embodiment 6 Comparative example 1
Surface roughness +++ ++ ++ +++ +++ +++ +
Pliability ** ** ** ** *** *** *
The surface roughness of common paper wrapper is used +++ it indicates, pliability is indicated with * * *.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, though So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this patent Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompt make it is a little change or be modified to The equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, it is right according to the technical essence of the invention Any simple modification, equivalent change and modification made by above embodiments, in the range of still falling within the present invention program.

Claims (9)

1. a kind of multi-layer co-extrusion packaging film with papery feel, it is characterised in that: be followed successively by from top to bottom surface layer, middle layer, Internal layer；
The middle layer is 1~7 layer；
The surface layer is made of the component of following parts by weight: 0~80 part of polyolefin, 0~60 part of ethylene copolymer, and containing imitative 15~35 parts of the resin of paper particle, 1~10 part of biodegradation agent, polyolefin and ethylene copolymer are not zero simultaneously；
The middle layer is made of the component of following parts by weight: 0~90 part of polyolefin, 0~90 part of ethylene copolymer, and biology 1~10 part of degradation agent, polyolefin and ethylene copolymer are not zero simultaneously；
Or, the middle layer is made of the component of following parts by weight: 1~80 part of polyolefin, 1~80 part of ethylene copolymer；
The internal layer is made of the component of following parts by weight: 0~80 part of polyolefin, 0~60 part of ethylene copolymer, and containing imitative 15~35 parts of the resin of paper particle, 1~10 part of biodegradation agent, polyolefin and ethylene copolymer are not zero simultaneously.
2. the multi-layer co-extrusion packaging film according to claim 1 with papery feel, it is characterised in that: the polyolefin is Polyethylene.
3. the multi-layer co-extrusion packaging film according to claim 2 with papery feel, it is characterised in that: the polyolefin is Linear low density polyethylene, melt index 1.5-2.4.
4. the multi-layer co-extrusion packaging film according to claim 1 with papery feel, it is characterised in that: the ethylene copolymer Object is ethylene-vinyl acetate copolymer, and wherein the content of vinyl acetate is 10%-18%, melt index 0.1-1.
5. the multi-layer co-extrusion packaging film according to claim 1 with papery feel, it is characterised in that: described to contain imitative paper The resin of particle be using polyethylene as carrier, based on inorganic imitative paper particle, the resin containing 0.5-10% Masterbatch.
6. the multi-layer co-extrusion packaging film according to claim 1 with papery feel, it is characterised in that: the biodegrade Agent is starch-base biodegradation agent.
7. the multi-layer co-extrusion packaging film according to claim 1 with papery feel, it is characterised in that: described that there is papery The multi-layer co-extrusion packaging film of feel with a thickness of 50~120 microns.
8. a kind of preparation method of the described in any item multi-layer co-extrusion packaging films with papery feel of claim 1 to 7, special Sign is: the following steps are included:
According to the proportion,
The hopper 1 of extruder is added in polyolefin, ethylene copolymer, the resin containing imitative paper particle, biodegradation agent by surface layer In, temperature melts under conditions of being 170~230 DEG C, into mouth mold；
Polyolefin, ethylene copolymer, biodegradation agent are added in the hopper 2 of extruder middle layer, and temperature is 170~230 DEG C Under conditions of melt, into mouth mold；
Or middle layer, polyolefin, ethylene copolymer are added in the hopper 2 of extruder, under conditions of temperature is 170~230 DEG C Melting, into mouth mold；
The hopper 3 of extruder is added in polyolefin, ethylene copolymer, the resin containing imitative paper particle, biodegradation agent by internal layer In, temperature melts under conditions of being 170~230 DEG C, into mouth mold；
After coextrusion, cooling and shaping, two-sided sided corona treatment, root are carried out to multi-layer co-extrusion packaging film using high-frequency high voltage It after needing to cut into required width, is wound into winder, obtains the multi-layer co-extrusion packaging film with papery feel.
9. a kind of described in any item multi-layer co-extrusion packaging films with papery feel of claim 1 to 7 are used for gift and fresh flower The purposes of packaging.
CN201811414222.2A 2018-11-26 2018-11-26 A kind of multi-layer co-extrusion packaging film and preparation method thereof with papery feel Pending CN109435400A (en)

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CN1230566A (en) * 1998-03-30 1999-10-06 平湖塑料厂 Glazed plastic film for liquid packing
CN101378902A (en) * 2006-02-02 2009-03-04 巴塞尔聚烯烃股份有限公司 Multilayer thermoshrinkable films
CN101618622A (en) * 2009-08-13 2010-01-06 大连吉润企业集团有限公司 Plastic synthetic paper
CN101905776A (en) * 2010-07-26 2010-12-08 刘燕 Multilayer coextrusion paper-like liquid packaging film
CN102729563A (en) * 2012-06-01 2012-10-17 朝阳佛瑞达科技有限公司 Easily degradable paper-like novel high-barrier packaging film for UHT liquid milk
CN202826619U (en) * 2012-10-19 2013-03-27 天津市天塑科技集团有限公司包装材料分公司 Five-layer co-extrusion paper-like film
CN103448331A (en) * 2013-09-03 2013-12-18 昆明钢铁控股有限公司 Easily-degradable and recyclable paper and application thereof
CN104334347A (en) * 2013-04-30 2015-02-04 宝洁公司 Flexible package
CN108727659A (en) * 2017-04-19 2018-11-02 广州市同源塑料制品有限公司 A kind of imitative paper anti-slip environmental film

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1230566A (en) * 1998-03-30 1999-10-06 平湖塑料厂 Glazed plastic film for liquid packing
CN101378902A (en) * 2006-02-02 2009-03-04 巴塞尔聚烯烃股份有限公司 Multilayer thermoshrinkable films
CN101618622A (en) * 2009-08-13 2010-01-06 大连吉润企业集团有限公司 Plastic synthetic paper
CN101905776A (en) * 2010-07-26 2010-12-08 刘燕 Multilayer coextrusion paper-like liquid packaging film
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CN102729563A (en) * 2012-06-01 2012-10-17 朝阳佛瑞达科技有限公司 Easily degradable paper-like novel high-barrier packaging film for UHT liquid milk
CN202826619U (en) * 2012-10-19 2013-03-27 天津市天塑科技集团有限公司包装材料分公司 Five-layer co-extrusion paper-like film
CN104334347A (en) * 2013-04-30 2015-02-04 宝洁公司 Flexible package
CN103448331A (en) * 2013-09-03 2013-12-18 昆明钢铁控股有限公司 Easily-degradable and recyclable paper and application thereof
CN108727659A (en) * 2017-04-19 2018-11-02 广州市同源塑料制品有限公司 A kind of imitative paper anti-slip environmental film

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