CN107902258A - Degradable paper-plastic composite film paper and preparation method thereof - Google Patents
Degradable paper-plastic composite film paper and preparation method thereof Download PDFInfo
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- CN107902258A CN107902258A CN201710899871.5A CN201710899871A CN107902258A CN 107902258 A CN107902258 A CN 107902258A CN 201710899871 A CN201710899871 A CN 201710899871A CN 107902258 A CN107902258 A CN 107902258A
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Classifications
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- 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
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/52—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
- B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- 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
-
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- 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
-
- 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)
- Biological Depolymerization Polymers (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The present invention relates to a kind of degradable paper-plastic composite film paper and preparation method thereof, composite membrane paper includes three layers of upper, middle and lower：Polylactic acid film layer, tack coat and paper layer；Polylactic acid film layer is the polylactic acid membrane that thickness is 10~100 μm, and polylactic acid membrane is prepared by stretch processes, and the raw material proportioning of polylactic acid membrane is 100 parts by weight meter of polylactic acid, 0.3~1.5 parts by weight of reinforcing agent.The preparation method of degradable paper-plastic composite film paper, including step：With preparing adhesive, prepare polylactic acid membrane, mechanism paper-plastic stick, winding curing after degradable paper-plastic composite film paper is made.The composite membrane paper of the present invention uses the raw material of natural reproducible, has complete biodegradable performance, can effectively reduce pollution of the petrochemical industry plastic products to environment.Composite membrane paper uses biaxially stretched polylactic acid film, has excellent mechanical property.The preparation process simple and stable of the present invention, production efficiency is high, suitable industrial application.
Description
Technical field
The present invention relates to packaging bag paper technical field, especially a kind of degradable paper-plastic composite film paper and its preparation side
Method.
Background technology
Paper-plastic composite film bag easily accommodates product as one kind, has been widely applied in daily life.It is multiple
Close film bag is to be formed by plastic cement with kraft compounded with paper, and usual plastic layer uses polypropylene or polyethylene as base material, ox-hide
Paper then using compound special brown paper is refined, has the characteristics that high intensity, good waterproof performance, appearance are beautiful.Number of patent application is
A kind of patent " manufacture method of paper plastic combined package bag " of CN103407674 A is by the use of polyvinyl resin as base material, by work
Industry printing paper with polyethylene is compound obtains paper plastic combined package bag, the plastic layer degradation capability of the composite membrane paper is poor, after discarding not
It is degradable, irreversible destruction will be caused to environment into natural environment.The problem of being difficult to degraded for PE resins, patent
The patent " degradable paper-plastic composite film paper and preparation method thereof " of 104960744 A of Application No. CN is fine using starch, plant
The degradable raw material such as dimension, polyvinyl alcohol, makrolon substitutes part polyethylene resin, obtains degradable paper plastic combined package
Bag.It can degrade although substituting the degradable raw material of polyvinyl resin, but to substitute dirt of the polyvinyl resin of part to environment
Dye harm is also larger.Therefore, the increasingly higher demands based on country to environmental protection, and the gradual enhancing of people's environmental consciousness,
Develop a kind of the significant of new degradable paper plastic combined package bag.
The content of the invention
Present invention seek to address that non-degradable composite membrane paper pollution on the environment problem, and provide a kind of degradable
Paper-plastic composite film paper and its preparation process.
Above-mentioned technical problem is solved to realize, the present invention provides a kind of degradable paper-plastic composite film paper, degradable paper
Composite membrane paper, it is characterised in that the composite membrane paper includes three layers of upper, middle and lower：Polylactic acid film layer, tack coat and paper layer；
The polylactic acid film layer is the polylactic acid membrane that thickness is 10~100 μm, and the polylactic acid membrane passes through biaxial tension work
Prepared by skill, the raw material proportioning of polylactic acid membrane is 100 parts by weight meter of polylactic acid, 0.3~1.5 parts by weight of reinforcing agent；The reinforcing agent
For chain extender, elastomer, fiber or rigid particles.
The tack coat is gluing oxidant layer, the raw material configuration proportion of the adhesive is 20 parts of curing agent, host agent 2.8~
3.2 parts, 20~28 parts of ethyl ester, in proportion stir evenly prepared adhesive.
The paper layer is the brown paper more than 40 grams per square meters.
The preparation method of the degradable paper-plastic composite film paper, comprises the following steps：
With preparing adhesive：The raw material configuration proportion of adhesive is 20 parts of curing agent, 2.8~3.2 parts of host agent, ethyl ester 20~28
Part, prepared adhesive is stirred evenly in proportion, then by the glue groove of the adhesive stirred evenly injection plastic compounding machine；
Prepare polylactic acid membrane；
Mechanism paper-plastic stick：Brown paper and polylactic acid membrane are filled on paper-plastic stick machine roller, to good line position, bellows temperature is set
Spend for 45~60 DEG C；The host and winder of paper-plastic stick machine are opened at the same time, adjustment rolls out tension force, and feed tension, discharge tension force,
Coiling tension, adjusts the speed of host and winder；
Composite membrane paper after winding is placed in curing chamber curing, composite membrane paper product is made after curing.
To needing bag making class product, composite membrane paper to place bag making after 12h or completely cooling after going out curing chamber.
Prepare comprising the following steps for the polylactic acid membrane：
It is granulated：It is 100 parts by weight meter of polylactic acid by proportioning, the polylactic acid film raw material of 0.3~1.5 parts by weight of reinforcing agent is thrown
Enter high mixer to be uniformly mixed；The reinforcing agent is chain extender, elastomer, fiber or rigid particles；Then twin-screw extrusion is passed through
Machine melt blending device prepares polylactic acid membrane granulation material, and temperature control during extrusion is at 145~185 DEG C；
Curtain coating：The polylactic acid membrane granulation material is added in casting apparatus, extruded to be cast into sheet material, temperature is set as
145~200 DEG C, curtain coating roll temperature is 20~50 DEG C；
Biaxial tension：Film longitudinal stretching is carried out first, and stretching ratio is 2~5 times, and draft temperature is 90~100 DEG C；
Afterwards, film cross directional stretch is carried out, stretching ratio is 2~6 times, and draft temperature is 95~105 DEG C, and institute is made through cutting edge and winding
State polylactic acid membrane.
Compared with the prior art, the invention has the advantages that：
A. composite membrane paper of the invention, its raw material employ the resource of natural reproducible, can be saved relative to conventional plastic
About petroleum resources, have complete biodegradable performance, can effectively reduce pollution of the petrochemical industry plastic products to environment.
B. the biaxially stretched polylactic acid film used in the present invention has excellent mechanical property, with the composite membrane paper of its preparation
Can be more preferably.
C. degradable composite membrane paper preparation process simple and stable of the invention, has more high efficiency, suitable industrialization
Production.
Embodiment
With reference to embodiment, the present invention will be described in detail.
Degradable paper-plastic composite film paper includes three layers of upper, middle and lower：Polylactic acid film layer, tack coat and paper layer；Polylactic acid film layer
For the polylactic acid membrane that thickness is 10~100 μm, polylactic acid membrane is prepared by stretch processes, and the raw material weight of polylactic acid membrane is matched somebody with somebody
Than for 100 parts of polylactic acid, 0.3~1.5 part of reinforcing agent；Reinforcing agent is chain extender, elastomer, fiber or rigid particles.
Tack coat is gluing oxidant layer, and the raw material weight ratio of adhesive is 20 parts of curing agent, 2.8~3.2 parts of host agent, second
20~28 parts of ester, in proportion stirs evenly prepared adhesive.
Paper layer is the brown paper more than 40 grams per square meters.
The preparation method of degradable paper-plastic composite film paper, comprises the following steps：
First, with preparing adhesive：The raw material configuration proportion of adhesive is 20 parts of curing agent, 2.8~3.2 parts of host agent, ethyl ester 20
~28 parts, prepared adhesive is stirred evenly in proportion, then inject the adhesive stirred evenly in glue groove；
2nd, the polylactic acid membrane is prepared, step is as follows：
(1) it is granulated：It is 100 parts by weight meter of polylactic acid by proportioning, the polylactic acid film of 0.3~1.5 parts by weight of reinforcing agent is former
Material input high mixer is uniformly mixed；The reinforcing agent is chain extender, elastomer, fiber or rigid particles；Then twin-screw is passed through
Extruder melt blending device prepares polylactic acid membrane granulation material, and temperature control during extrusion is at 145~185 DEG C；
(2) it is cast：The polylactic acid membrane granulation material is added in casting apparatus, extruded to be cast into sheet material, temperature is set
It is set to 145~200 DEG C, curtain coating roll temperature is 20~50 DEG C；
(3) biaxial tension：Film longitudinal stretching is carried out first, and stretching ratio is 2~5 times, and draft temperature is 90~100
℃；Afterwards, film cross directional stretch is carried out, stretching ratio is 2~6 times, and draft temperature is 95~105 DEG C, is made through cutting edge and winding
Obtain the polylactic acid membrane.
3rd, mechanism paper-plastic stick：Brown paper and polylactic acid membrane are filled on paper-plastic stick machine roller, to good line position, wind is set
Box temperature degree is 45~60 DEG C；The host and winder of paper-plastic stick machine are opened at the same time, and adjustment rolls out tension force, feed tension, discharging
The speed of tension force, coiling tension, adjusting host and winder；
4th, the composite membrane paper after winding is placed in curing chamber, curing room temperature is set as 60 DEG C, and the curing time is small for 24
When, composite membrane paper product is made after curing.
Embodiment 1
The present embodiment composite membrane paper is the general categories such as biscuit, candy, moon cake, dilated food packaging.Composite membrane paper includes upper
In lower three layers：Polylactic acid film layer, tack coat and paper layer.The preparation process of composite membrane paper is：
With preparing adhesive：Adhesive ratio is 20 parts of curing agent, 3.0 parts of host agent, 26 parts of ethyl ester, will be prepared in proportion
Good adhesive stirs evenly, and finally injects the adhesive stirred evenly in glue groove；
It is granulated：By 100 parts by weight of polylactic acid, the polylactic acid film raw material input high mixer of 0.5 part of parts by weight of reinforcing agent mixes
Close uniform；Then polylactic acid membrane granulation material is prepared by double screw extruder melt blending device, temperature control during extrusion
At 145~185 DEG C；
Curtain coating：Polylactic acid membrane granulation material is added in casting apparatus, extruded to be cast into sheet material, temperature is set as 145
~200 DEG C, curtain coating roll temperature is 20~50 DEG C；
Biaxial tension：Film longitudinal stretching is carried out first, and stretching ratio is 2~5 times, and draft temperature is 90~100 DEG C；
Afterwards, film cross directional stretch is carried out, stretching ratio is 2~6 times, and draft temperature is 95~105 DEG C, and thickness is 30 μm, through cutting edge
The polylactic acid membrane is made with winding.
Mechanism paper-plastic stick：Brown paper and polylactic acid membrane are filled on rod, to good line position, it is 45~60 to set box temperature
℃；Host and winding, adjustment tension knob (rolling out tension force, feed tension, discharge tension force, coiling tension) and speed governing are opened at the same time
Knob, first vulgar running, speed of production is gradually stepped up after stablizing；
Bug check：To meet film carry out quality examination, as occur bonding loosely, paper bending phenomena such as, even if to machine
Platform is debugged untill product qualification, is produced in batches afterwards；
Composite membrane paper after winding is placed in curing chamber, curing room temperature is set as 50-60 DEG C, and the curing time is small for 24
When, finished product after curing；To needing bag making class product, half product to place bag making after 12h or completely cooling after pulling out curing chamber.
Specific targets are as shown in the table：
Embodiment 2
The present embodiment composite membrane paper is the packaging such as hand cleanser, softener.Composite membrane paper includes three layers of upper, middle and lower：Polylactic acid membrane
Layer, tack coat and paper layer.The preparation process of composite membrane paper is：
With preparing adhesive：Adhesive ratio is 20 parts of curing agent, 2.8 parts of host agent, 20 parts of ethyl ester, will be prepared in proportion
Good adhesive stirs evenly, and finally injects the adhesive stirred evenly in glue groove；
It is granulated：100 parts by weight of polylactic acid, the polylactic acid film raw material input of 0.8 part of parts by weight of epoxy chain extenders is high mixed
Machine is uniformly mixed；Then polylactic acid membrane granulation material is prepared by double screw extruder melt blending device, temperature during extrusion
Control is at 145~185 DEG C；
Curtain coating：Polylactic acid membrane granulation material is added in casting apparatus, extruded to be cast into sheet material, temperature is set as 145
~200 DEG C, curtain coating roll temperature is 20~50 DEG C；
Biaxial tension：Film longitudinal stretching is carried out first, and stretching ratio is 2~5 times, and draft temperature is 90~100 DEG C；It
Afterwards, carry out film cross directional stretch, stretching ratio is 2~6 times, and draft temperature is 95~105 DEG C, and thickness is 50 μm, through cutting edge and
The polylactic acid membrane is made in winding.
Mechanism paper-plastic stick：Brown paper and polylactic acid membrane are filled on rod, to good line position, it is 45~60 to set box temperature
℃；Host and winding, adjustment tension knob (rolling out tension force, feed tension, discharge tension force, coiling tension) and speed governing are opened at the same time
Knob, first vulgar running, speed of production is gradually stepped up after stablizing；
Bug check：To meet film carry out quality examination, as occur bonding loosely, paper bending phenomena such as, even if to machine
Platform is debugged untill product qualification, is produced in batches afterwards；
Composite membrane paper after winding is placed in curing chamber, curing room temperature is set as 60 DEG C, when the curing time is 24 small,
Finished product after curing；To needing bag making class product, half product to place ability bag making after 12h or completely cooling after pulling out curing chamber.
Specific targets are as shown in the table：
Embodiment 3
The present embodiment composite membrane paper is packed to vacuumize boiling etc..Composite membrane paper includes three layers of upper, middle and lower：Polylactic acid film layer,
Tack coat and paper layer.The preparation process of composite membrane paper is：
With preparing adhesive：Adhesive ratio is 20 parts of curing agent, 3.2 parts of host agent, 28 parts of ethyl ester, will be prepared in proportion
Good adhesive stirs evenly, and finally injects the adhesive stirred evenly in glue groove；
It is granulated：100 parts by weight of polylactic acid, the polylactic acid film raw material input of 0.3 part of parts by weight of epoxy chain extenders is high mixed
Machine is uniformly mixed；Then polylactic acid membrane granulation material is prepared by double screw extruder melt blending device, temperature during extrusion
Control is at 145~185 DEG C；
Curtain coating：Polylactic acid membrane granulation material is added in casting apparatus, extruded to be cast into sheet material, temperature is set as 145
~200 DEG C, curtain coating roll temperature is 20~50 DEG C；
Biaxial tension：Film longitudinal stretching is carried out first, and stretching ratio is 2~5 times, and draft temperature is 90~100 DEG C；
Afterwards, film cross directional stretch is carried out, stretching ratio is 2~6 times, and draft temperature is 95~105 DEG C, and thickness is 100 μm, through cutting edge
The polylactic acid membrane is made with winding.
Mechanism paper-plastic stick：Brown paper and polylactic acid membrane are filled on rod, to good line position, it is 45~60 to set box temperature
℃；Host and winding, adjustment tension knob (rolling out tension force, feed tension, discharge tension force, coiling tension) and speed governing are opened at the same time
Knob, first vulgar running, speed of production is gradually stepped up after stablizing；
Bug check：To meet film carry out quality examination, as occur bonding loosely, paper bending phenomena such as, even if to machine
Platform is debugged untill product qualification, is produced in batches afterwards；
Composite membrane paper after winding is placed in curing chamber, curing room temperature is set as 60 DEG C, when the curing time is 24 small,
Finished product after curing；To needing bag making class product, half product to place ability bag making after 12h or completely cooling after pulling out curing chamber.
Specific targets are as shown in the table：
Embodiment 4
The present embodiment composite membrane paper is the packaging required to dissolvent residual.Composite membrane paper includes three layers of upper, middle and lower：Poly- breast
Sorrel layer, tack coat and paper layer.The preparation process of composite membrane paper is：
With preparing adhesive：Adhesive ratio is 20 parts of curing agent, 2.8 parts of host agent, 20 parts of ethyl ester, will be prepared in proportion
Good adhesive stirs evenly, and finally injects the adhesive stirred evenly in glue groove；
It is granulated：By 100 parts by weight of polylactic acid, 1.5 parts of parts by weight of reinforcing agent are thrown as the polylactic acid film raw material of reinforcing agent
Enter high mixer to be uniformly mixed；Then polylactic acid membrane granulation material is prepared by double screw extruder melt blending device, during extrusion
Temperature control at 145~185 DEG C；
Curtain coating：Polylactic acid membrane granulation material is added in casting apparatus, extruded to be cast into sheet material, temperature is set as 145
~200 DEG C, curtain coating roll temperature is 20~50 DEG C；
Biaxial tension：Film longitudinal stretching is carried out first, and stretching ratio is 2~5 times, and draft temperature is 90~100 DEG C；
Afterwards, film cross directional stretch is carried out, stretching ratio is 2~6 times, and draft temperature is 95~105 DEG C, and thickness is 10 μm, through cutting edge
The polylactic acid membrane is made with winding.
Mechanism paper-plastic stick：Brown paper and polylactic acid membrane are filled on rod, to good line position, it is 45~60 to set box temperature
℃；Host and winding, adjustment tension knob (rolling out tension force, feed tension, discharge tension force, coiling tension) and speed governing are opened at the same time
Knob, first vulgar running, speed of production is gradually stepped up after stablizing；
Bug check：To meet film carry out quality examination, as occur bonding loosely, paper bending phenomena such as, even if to machine
Platform is debugged untill product qualification, is produced in batches afterwards；
Composite membrane paper after winding is placed in curing chamber, curing room temperature is set as 60 DEG C, when the curing time is 24 small,
Finished product after curing；To needing bag making class product, half product to place ability bag making after 12h or completely cooling after pulling out curing chamber.
Specific targets are as shown in the table：
It should be noted last that above embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail with reference to preferred embodiment, it will be understood by those of ordinary skill in the art that, can be right
Technical scheme technical scheme is modified or replaced equivalently, without departing from the spirit and scope of technical solution of the present invention, its is equal
It should cover among scope of the presently claimed invention.
Claims (5)
1. a kind of degradable paper-plastic composite film paper, it is characterised in that the composite membrane paper includes three layers of upper, middle and lower：Polylactic acid membrane
Layer, tack coat and paper layer；
The polylactic acid film layer is the polylactic acid membrane that thickness is 10~100 μm, and the polylactic acid membrane passes through stretch processes system
Standby, the raw material proportioning of polylactic acid membrane is 100 parts by weight meter of polylactic acid, 0.3~1.5 parts by weight of reinforcing agent；The reinforcing agent is expansion
Chain agent, elastomer, fiber or rigid particles.
2. degradable paper-plastic composite film paper according to claim 1, it is characterised in that the tack coat is gluing oxidant layer,
The raw material configuration proportion of the adhesive is 20 parts of curing agent, 2.8~3.2 parts of host agent, 20~28 parts of ethyl ester, will be prepared in proportion
Good adhesive stirs evenly.
3. degradable paper-plastic composite film paper according to claim 2, it is characterised in that the paper layer be more than 40 grams/
The brown paper of square meter.
4. the preparation method of the degradable paper-plastic composite film paper described in claim 1, it is characterised in that comprise the following steps：
With preparing adhesive：The raw material configuration proportion of adhesive is 20 parts of curing agent, 2.8~3.2 parts of host agent, 20~28 parts of ethyl ester,
Prepared adhesive is stirred evenly in proportion, then by the glue groove of the adhesive stirred evenly injection plastic compounding machine；
Prepare polylactic acid membrane；
Mechanism paper-plastic stick：Brown paper and polylactic acid membrane are filled on paper-plastic stick machine roller, to good line position, setting box temperature is
45~60 DEG C；The host and winder of paper-plastic stick machine are opened at the same time, and adjustment rolls out tension force, and feed tension, discharge tension force, batches
Tension force, adjusts the speed of host and winder；
Composite membrane paper after winding is placed in curing chamber curing, degradable paper-plastic composite film paper is made after curing.
5. the preparation method of degradable paper-plastic composite film paper according to claim 4, it is characterised in that prepare the poly- breast
Sorrel comprises the following steps：
It is granulated：It is 100 parts by weight meter of polylactic acid by proportioning, the polylactic acid film raw material input of 0.3~1.5 parts by weight of reinforcing agent is high
Mixed machine is uniformly mixed；The reinforcing agent is chain extender, elastomer, fiber or rigid particles；Then melted by double screw extruder
Melt intermingling apparatus and prepare polylactic acid membrane granulation material, temperature control during extrusion is at 145~185 DEG C；
Curtain coating：The polylactic acid membrane granulation material is added in casting apparatus, extruded to be cast into sheet material, temperature is set as 145
~200 DEG C, curtain coating roll temperature is 20~50 DEG C；
Biaxial tension：Film longitudinal stretching is carried out first, and stretching ratio is 2~5 times, and draft temperature is 90~100 DEG C；Afterwards,
Film cross directional stretch is carried out, stretching ratio is 2~6 times, and draft temperature is 95~105 DEG C, and thickness, which is made, through cutting edge and winding is
10~100 μm of the polylactic acid membrane.
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| CN111172810A (en) * | 2020-01-07 | 2020-05-19 | 华南理工大学 | Completely biodegradable heat-sealing paper and preparation method and application thereof |
| CN111572983A (en) * | 2020-04-26 | 2020-08-25 | 浙江天益塑业有限公司 | High-strength degradable paper-plastic composite bag and preparation method thereof |
| CN111993741A (en) * | 2020-09-11 | 2020-11-27 | 中国科学院长春应用化学研究所 | Paper-plastic composite material and preparation method thereof |
| CN112522992A (en) * | 2020-12-04 | 2021-03-19 | 厦门艾美森新材料科技股份有限公司 | Degradable kraft paper buffer air cushion film with good waterproofness and preparation method thereof |
| CN115892736A (en) * | 2022-11-07 | 2023-04-04 | 山东联欣环保科技有限公司 | Biodegradable paper-plastic composite film and preparation method and application thereof |
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