CN108867190A - A kind of slow-release preserving fruit and vegetable utilizing paper membrane and its preparation method and application - Google Patents
A kind of slow-release preserving fruit and vegetable utilizing paper membrane and its preparation method and application Download PDFInfo
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- CN108867190A CN108867190A CN201810620740.3A CN201810620740A CN108867190A CN 108867190 A CN108867190 A CN 108867190A CN 201810620740 A CN201810620740 A CN 201810620740A CN 108867190 A CN108867190 A CN 108867190A
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- fresh
- antioxidant
- antibacterial layer
- paper
- essential oil
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/38—Corrosion-inhibiting agents or anti-oxidants
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/64—Addition to the formed paper by contacting paper with a device carrying the material the material being non-fluent at the moment of transfer, e.g. in form of preformed, at least partially hardened coating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Storage Of Fruits Or Vegetables (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of slow-release preserving fruit and vegetable utilizing paper membrane, belong to wrapping paper technical field, fresh-keeping paper membrane provided by the invention includes the paper layer being stacked and antibacterial layer, and the thickness of the paper layer and antibacterial layer is respectively 100~120 μm and 20~40 μm.For antibacterial layer using polyvinyl alcohol and starch as base-material, the inorganic carrier for having loaded plant extracts essential oil is bacteriostatic agent.The polyvinyl alcohol of the antibacterial layer of freshness protection package of the invention is degradable and has hygroscopicity, and the fungistatic effect of its gas permeability and slow release can be improved in the addition of antipathogenic composition；Starch in antibacterial layer also has the function of moisture absorption and control essential oil release, by adjusting the thickness degree, can not only improve the air penetrability of freshness protection package, moreover it is possible to the further burst size of control essential oil.
Description
Technical field
The present invention relates to wrapping paper technical fields, and in particular to a kind of slow-release preserving fruit and vegetable utilizing paper membrane and preparation method thereof and
Using.
Background technique
In storage after fruit and vegetable picking, merely packed using preservative film, since preservative film itself does not have
Biocidal property, so extended shelf life is very short.Common plastic package material is mostly PE, PP and PET etc. in the market, can not be given birth to
Object degradation, be easy to cause environmental pollution.
Paper packing material raw material sources are extensive, at low cost, and type is abundant；With suitable intensity, stiffness and mechanical adaptation
Property, wear-resistant, easily molded and folding operates convenient for Mechanized Processing；Processing performance is good, is convenient for Compound Machining；Good health
Safety；Also there is excellent printing, biodegradable and recuperability, can produce in batches.But with plastics package
Material is compared, and general paper packing material is easy to moisture absorption, and hardness reduces after dampness；Paper belongs to porous fiber material, vapor,
The transmitance of gas and smell is very high；It is not easy to seal；Not puncture-resistant and tearing etc..These disadvantages limit paper material and protect in food
Application in fresh packaging.
Polyvinyl alcohol (PVA) has excellent biological degradability, film forming, tear resistance, cohesive force, antistatic property, cream
The property changed, good oil resistance, solvent resistance have important role in plastic film field.At this stage, only by essential oil and PVA
It is mixed with bacteriostatic film, though can quickly inhibit the bacterial growth in packaging bag, the duration is but very short.
Summary of the invention
In view of this, it is an object of that present invention to provide a kind of slow-release preserving fruit and vegetable utilizing paper bag and preparation method thereof, the present invention
The fresh-keeping paper membrane provided has the fungistatic effect of slow release, extends the bacteriostasis, preservation time.
It include the paper layer being stacked and antibacterial layer, the paper the present invention provides a kind of slow-release preserving fruit and vegetable utilizing paper membrane
The thickness of matter layer and antibacterial layer is respectively 100~120 μm and 20~40 μm；
The antibacterial layer includes the component of following mass fraction content：
The processing aid is that polymeric epoxy is functionalized one of chain extender, antioxidant or regulator or more
Kind.
Preferably, the plants essential oil be Rosa Damascana, laurin oil, tea tree ethereal oil, eucalyptus quintessence oil, Peppermint essential oil,
One of fennel essential oil, clove oil, Herba Origani Vulgaris quintessence oil, Rosemary Oil and thyme essential oil are a variety of.
Preferably, the inorganic carrier is montmorillonite, zeolite, diatomite, phosphoric acid soil or molecular sieve
Preferably, the molecular sieve is MCM-41, ZSM-5, HZSM-5, SBA-15, SPAO-11, SPAO-34, SSZ-13
Or ITQ-13.
Preferably, the mass ratio of the inorganic carrier and essential oil is 1~3：1.
Preferably, the polymeric epoxy functionalization chain extender is CHE4370, KL-E4300, KL-E4370, KL-
E4370B or TMP6000.
Preferably, the antioxidant is antioxidant 1222, antioxidant 1076, antioxidant 1010, antioxidant 1098, antioxygen
Agent 2246, antioxidant 2246-S, BBM, antioxidant 3114, antioxidant 3125, antioxidant 1330 or Irganox245.
The present invention also provides the preparation methods of above-mentioned fresh-keeping paper membrane, include the following steps：
It is granulated after each component in above-mentioned antibacterial layer is mixed according to the weight fraction and obtains antibacterial layer resin particle；
By antibacterial layer resin particle, lamination obtains slow-release preserving fruit and vegetable utilizing paper membrane in papery layer surface after extrusion forming；
The thickness of the fresh-keeping paper membrane paper layer and antibacterial layer is respectively 100~120 μm and 20~40 μm.
Preferably, the equipment of the extrusion forming is coextrusion casting machine, and the roller of the coextrusion casting machine includes lamination roller, back
Pressure roller and traction roller, the lamination roller temperature are 70~110 DEG C；
The revolving speed of the lamination roller of the coextrusion casting machine, counter-pressure cylinder and traction roller independently is 0.5~1.5r/min.
The present invention also provides application of the above-mentioned fresh-keeping paper membrane in preserving fruit and vegetable utilizing, the antibacterial layer is contacted with fruits and vegetables.
Advantageous effects：The present invention provides a kind of slow-release preserving fruit and vegetable utilizing paper membranes, including the paper layer being stacked
With antibacterial layer, the thickness of the paper layer and antibacterial layer is respectively 100~120 μm and 20~40 μm；The antibacterial layer include with
The component of lower mass percentage：33~44 parts of PVA, 3~8 parts of glycerol, 8~12 parts of starch, the inorganic of plants essential oil is loaded
2~5 parts of carrier, 1~3 part of processing aid；The processing aid is that polymeric epoxy is functionalized chain extender, antioxidant or tune
Save one of agent or a variety of.In the present invention, antibacterial layer has loaded plant extracts essence using polyvinyl alcohol and starch as base-material
The inorganic carrier of oil is bacteriostatic agent.The polyvinyl alcohol of the antibacterial layer of fresh-keeping paper membrane provided by the invention is degradable and has moisture absorption
Property, the fungistatic effect of its gas permeability and slow release can be improved in the addition of bacteriostatic agent, and starch also has moisture absorption and control essence
The effect of oil release, by controlling the release of essential oil, to extend antibacterial and safe time, when having loaded the inorganic of plants essential oil
When carrier quality number is 3.5 parts, fresh-keeping paper bag has best fresh-keeping effect, can extend shelf life 4 days of Xiaoqinling Nature Reserve or so.
Specific embodiment
The present invention provides a kind of slow-release preserving fruit and vegetable utilizing paper membranes, described including the paper layer being stacked and antibacterial layer
The thickness of paper layer and antibacterial layer is respectively 100~120 μm and 20~40 μm；
The antibacterial layer includes the component of following mass fraction content：
The processing aid is that polymeric epoxy is functionalized one of chain extender, antioxidant or regulator or more
Kind.
In the present invention, the paper layer is preferably layers of kraft paper.
Relative to plastic fresh-keeping membrane, the layers of kraft paper that the present invention uses has suitable intensity, stiffness and mechanical adaptability,
Wear-resistant, easily molded and folding compensates for plastic fresh-keeping membrane softness, is not easy the shortcomings that forming.
The present invention is not particularly limited the source of brown paper, selects brown paper well known to those skilled in the art.
In the present invention, the thickness of the paper layer is preferably 100~120 μm more preferably 110 μm.
In the present invention, the thickness of the antibacterial layer is preferably 20~40 μm, and more preferably 30 μm.
The present invention by adjusting curtain coating machine host melt revolution speed and screw speed respectively 30~60r/min and 5~
Between 12r/min, the thickness of antibacterial layer can control, ensure that the rate of release of bacteriostatic agent, to further improve fruits and vegetables
Freshness date.
In the present invention, the antibacterial layer preferably includes the component of following mass fraction content：
The processing aid is that polymeric epoxy is functionalized one of chain extender, antioxidant or regulator or more
Kind.
In the present invention, the mass ratio of the PVA and starch is preferably (11~22):4, more preferably 15：4；The PVA
Mass ratio with glycerol is preferably (4~11):1, more preferably 9:1.
In the present invention, the described promising modifying agent, can reduce the fusing point of PVA
In the present invention, the PVA in the antibacterial layer and starch have the function of moisture absorption, it is ensured that fresh-keeping paper membrane is right
Moisture during preserving fruit and vegetable utilizing in fresh-keeping paper membrane is not too high.
In the present invention, the mass fraction of the inorganic carrier for having loaded plants essential oil is preferably 3.5 parts.
In the present invention, the plants essential oil be preferably Rosa Damascana, it is laurin oil, Rosa Damascana, eucalyptus quintessence oil, thin
One of lotus essential oil, fennel essential oil, clove oil, Herba Origani Vulgaris quintessence oil, Rosemary Oil and thyme essential oil are a variety of, more preferably
For Rosa Damascana, Rosa Damascana, Peppermint essential oil or clove oil.In the present invention, when plants essential oil is a variety of, the present invention couple
The amount ratio of each plants essential oil is not particularly limited, and selects the mixture of arbitrary proportion.
In the present invention, the inorganic carrier be preferably montmorillonite, zeolite, diatomite, phosphoric acid soil or molecular sieve, more preferably
For molecular sieve.
In the present invention, the molecular sieve is preferably MCM-41, ZSM-5, HZSM-5, SBA-15, SPAO-11, SPAO-
34, SSZ-13 or ITQ-13.
In the present invention, the mass ratio of the inorganic carrier and essential oil is preferably 1~3：1, more preferably 2：1.
In the present invention, the partial size of the inorganic carrier for having carried plants essential oil is preferably 0.1~20 micron, more preferably
5~15 microns, the specific surface area of the inorganic carrier for having carried plants essential oil is preferably 10~500m2/ g, more preferably 50~
450m2/ g, more preferably 200~300m2/g。
In the present invention, the inorganic carrier for having loaded plants essential oil not only has the function of antibacterial, also has and improves
PVA gas permeability, the slow effect for discharging plants essential oil bacteriostatic agent, to will not influence the eupnea of fruits and vegetables and can extend fresh-keeping
The antibacterial time.
In the present invention, polymeric epoxy functionalization chain extender be preferably CHE4370, KL-E4300, KL-E4370,
KL-E4370B or TMP6000, more preferably TMP6000.In the present invention, the polymeric epoxy functionalization chain extender can
Improve the mechanical property of material.
In the present invention, the antioxidant is preferably antioxidant 1222, antioxidant 1076, antioxidant 1010, antioxidant
1098, antioxidant 2246, antioxidant 2246-S, BBM, antioxidant 3114, antioxidant 3125, antioxidant 1330 or
Irganox245, more preferably Irganox245.
In the present invention, the regulator be preferably stearic acid, butyl stearate, oleamide, paraffin, polyethylene wax or
EBS, more preferably EBS.
In the present invention, the regulator is used to improve the gloss and thermal stability of film.
In the present invention, the processing aid is that polymeric epoxy is functionalized in chain extender, antioxidant or regulator
It is one or more, preferably comprise polymeric epoxy functionalization chain extender, antioxidant and regulator mixture, more preferably
For the mixture of TMP6000, Irganox245 and EBS.
In the present invention, when processing aid is the mixing that polymeric epoxy is functionalized chain extender, antioxidant and regulator
When object, the mass ratio of the polymeric epoxy functionalization chain extender, antioxidant and regulator is preferably 3~1：1：1~3, more
Preferably 2:1:2.
The present invention enhances the tensile strength and inoxidizability of fresh-keeping paper bag using processing aid, improves fresh-keeping paper bag
The stability of structure guarantees that it is not tearable.
The present invention also provides the preparation methods of above-mentioned fresh-keeping paper membrane, which is characterized in that includes the following steps：
It is granulated after each component in above-mentioned antibacterial layer is mixed according to the weight fraction, obtains antibacterial layer resin particle；
By lamination after antibacterial layer resin particle extrusion forming in paper layer single side face, slow-release preserving fruit and vegetable utilizing paper membrane is obtained.
The present invention is granulated after mixing each component in antibacterial layer according to the weight fraction, obtains antibacterial layer resin
Grain.
In the present invention, the temperature of the granulation is preferably 160~190 DEG C, and more preferably 170~180 DEG C
In the present invention, the granulation is preferably granulated using pelletizer, and the screw speed of the pelletizer is preferred
For 40r/min.
In the present invention, area's heating temperature of the pelletizer is preferably 155~175 DEG C, and more preferably 170 DEG C；Two
Area's heating temperature is preferably 160~175 DEG C, and more preferably 170 DEG C；Three-zone heating temperature is preferably 165~180 DEG C, more preferably
It is 175 DEG C；4th area heating temperature is preferably 165~180 DEG C, and more preferably 180 DEG C；5th area heating temperature is preferably
170~180 DEG C, more preferably 180 DEG C；6th area heating temperature is preferably 165~180 DEG C, and more preferably 175 DEG C；It is described
Seven area's heating temperatures are preferably 160~175 DEG C, and more preferably 170 DEG C.
The present invention further preferably includes being dried, the temperature of the drying process is preferably 70~90 DEG C, more before granulation
Preferably 80 DEG C, the time of drying process is preferably 30~60min, more preferably 40min.Method of the present invention to drying process
It is not particularly limited, selects drying means well known to those skilled in the art.
After obtaining antibacterial layer resin particle, the present invention is by lamination after antibacterial layer resin particle extrusion forming in paper layer list
Face obtains slow-release preserving fruit and vegetable utilizing paper membrane.
In the present invention, the extrusion forming preferably uses coextrusion casting machine.In the present invention, the coextrusion casting machine
Roller preferably include lamination roller, counter-pressure cylinder and traction roller.
In the present invention, the temperature of the lamination roller is preferably 70~110 DEG C, and more preferably 80~100 DEG C, most preferably
90℃。
In the present invention, the revolving speed of the lamination roller of the coextrusion casting machine, counter-pressure cylinder and traction roller is independently preferably 0.5~
1.5r/min, more preferably 1.0~1.3r/min,
In the present invention, the amount of the antibacterial layer of the lamination is to reach the thickness of antibacterial layer requirement.
The present invention also provides above-mentioned fresh-keeping paper membranes in the application of preserving fruit and vegetable utilizing, and the antibacterial layer contacts with fruits and vegetables.
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
Embodiment 1
(1) antibacterial layer resin particle is prepared, base-material is PVA and starch, has been loaded inorganic in the inorganic carrier of plants essential oil
Carrier is molecular sieve ZSM-5, and essential oil is Herba Origani Vulgaris quintessence oil, and the mass ratio of ZSM-5 and Herba Origani Vulgaris quintessence oil is 2:1, modifying agent is glycerol, is added
Work auxiliary agent is TMP6000, Irganox2455 and EBS, and the mass fraction of base-material is 37.5 parts, has loaded the inorganic of plants essential oil
The mass fraction of carrier is 4.5 parts, and the mass fraction of modifying agent is 5 parts, and the mass fraction of processing aid is 2.5 parts；In advance will
550g PVA and 200g starch are dried under the conditions of 80 DEG C, and PVA, starch, 60gZSM-5,30g essential oil, the 100g after drying is sweet
Oil, 20gTMP6000,10g Irganox2455 and 20g EBS stirring it is homogeneous after through dual-screw pelletizer extruding pelletization,
The mass ratio of TMP6000, Irganox2455 and EBS are 2:1:2.Wherein, area's heating temperature is 170 DEG C, two area's heating temperatures
It is 170 DEG C, three-zone heating temperature is 175 DEG C, and four area's heating temperatures are 180 DEG C, and five area's heating temperatures are 180 DEG C, the heating of 6th area
Temperature is 175 DEG C, and seven area's heating temperatures are 170 DEG C.The screw rod rotation speed of dual-screw pelletizer is 40r/min.
(2) corresponding host on coextrusion casting machine is added in obtained antibacterial layer resin particle, is squeezed through coextrusion casting machine
Molding, and lamination obtains slow-release preserving fruit and vegetable utilizing paper membrane on brown paper surface rapidly.
(3) above-mentioned fresh-keeping paper membrane is sealed by heat sealing machine, obtains slow-release preserving fruit and vegetable utilizing paper bag A.
Described to coextrude them into during type, the revolving speed of the roller of multi-layer co-extruded casting machine is 1r/min, multi-layer co-extruded curtain coating
The roller of machine includes lamination roller, counter-pressure cylinder and traction roller, and lamination roller temperature is 70 DEG C.
Embodiment 2
It is glued to investigate lamination roll temperature on multi-layer co-extruded casting machine between the layers of kraft paper and antibacterial layer of fresh-keeping paper membrane
The influence of knot property is to investigate variable setting to put down with lamination roll temperature on the basis of the formula composition of embodiment 1 and preparation method
Row experimental group, tests the peel strength between layers of kraft paper and antibacterial layer, and experimental group setting and experimental result are as shown in table 1：
Influence of the 1 lamination roll temperature of table to safety paper film stripping intensity
| Lamination roll temperature (DEG C) | Peel strength (N/mm) |
| 70 | 1.98 |
| 80 | 2.74 |
| 90 | 4.62 |
| 100 | 2.91 |
| 110 | 2.12 |
Table 1 is the results show that when multi-layer co-extruded casting machine lamination roll temperature is 90 DEG C, between each film layer of the fresh-keeping paper membrane of gained
Peel strength be 4.62N/mm, be higher than other experimental groups.
Embodiment 3
(1) antibacterial layer resin particle is prepared, base-material is PVA and starch, has loaded molecule in the inorganic carrier of plants essential oil
Sieve is ZSM-5, and essential oil is Herba Origani Vulgaris quintessence oil, and the mass ratio of ZSM-5 and Herba Origani Vulgaris quintessence oil is 2:1, modifying agent is glycerol, and processing aid is
TMP6000, Irganox2455 and EBS, the mass fraction of base-material are 38 parts, have loaded the quality of the inorganic carrier of plants essential oil
Number is 4.5 parts, and the mass fraction of modifying agent is 5 parts, and the mass fraction of processing aid is 2.5 parts；In advance by 550g PVA and
210g starch is dried under the conditions of 80 DEG C, by after drying PVA, starch, 60gZSM-5,30g essential oil, 100g glycerol,
Through dual-screw pelletizer extruding pelletization after 20gTMP6000,10g Irganox2455 and 20g EBS stirring are homogeneous, TMP6000,
The mass ratio of Irganox2455 and EBS is 2:1:2.Wherein, area's heating temperature is 170 DEG C, and two area's heating temperatures are 170 DEG C,
Three-zone heating temperature is 175 DEG C, and four area's heating temperatures are 180 DEG C, and five area's heating temperatures are 180 DEG C, and six area's heating temperatures are 175
DEG C, seven area's heating temperatures are 170 DEG C.The screw rod rotation speed of dual-screw pelletizer is 40r/min.
(2) corresponding host on coextrusion casting machine is added in obtained antibacterial layer resin particle, is squeezed through coextrusion casting machine
Molding, and lamination obtains slow-release preserving fruit and vegetable utilizing paper membrane on brown paper surface rapidly.
(3) above-mentioned fresh-keeping paper membrane is sealed by heat sealing machine, obtains slow-release preserving fruit and vegetable utilizing paper bag B.
Described to coextrude them into during type, the revolving speed of the roller of multi-layer co-extruded casting machine is 1r/min, multi-layer co-extruded curtain coating
The roller of machine includes lamination roller, counter-pressure cylinder and traction roller, and lamination roller temperature is 90 DEG C.
Embodiment 4
In order to improve the tensile strength of fresh-keeping paper membrane, improves the stability of structure, guarantee that it is not easy to be torn, implementing
On the basis of the formula composition and preparation method of example 3, i.e. the mass ratio of guarantee TMP6000, Irganox2455 and EBS is 2:1:
2 is constant, investigates influence of the total content of processing aid to fresh-keeping paper membrane tensile strength and elongation at break, experimental group setting and reality
Test that the results are shown in Table 2：
Test result of the 2 processing aid total content of table to fresh-keeping paper membrane tensile strength and elongation at break
For table 2 the results show that when processing aid total content is 2.5 parts, the horizontal and vertical tension of the fresh-keeping paper bag of gained is strong
Degree is respectively 46.1MPa and 81.5MPa, is higher than other experimental groups.
Further, in the formula composition of embodiment 3, base that preparation method and processing aid mass fraction are 2.5 parts
On plinth, shadow of the mass ratio to fresh-keeping paper bag tensile strength and elongation at break of TMP6000, Irganox2455 and EBS are had studied
It rings, experimental group setting and experimental result are as shown in table 3：
Test result of the 3 processing aid ratio of table to fresh-keeping paper membrane tensile strength and elongation at break
Table 3 is the results show that when the mass ratio of TMP6000, Irganox2455 and EBS are 2:1:When 2, the fresh-keeping paper bag of gained
Horizontal and vertical tensile strength be respectively 49.8MPa and 88.2MPa, be higher than other experimental groups.
Embodiment 5
(1) antibacterial layer resin particle is prepared, base-material is PVA and starch, has loaded molecule in the inorganic carrier of plants essential oil
Sieve is ZSM-5, and essential oil is Herba Origani Vulgaris quintessence oil, and the mass ratio of ZSM-5 and Herba Origani Vulgaris quintessence oil is 2:1, modifying agent is glycerol, and processing aid is
TMP6000, Irganox2455 and EBS, the mass fraction of base-material are 38 parts, have loaded the quality of the inorganic carrier of plants essential oil
Number is 4.5 parts, and the mass fraction of modifying agent is 5 parts, and the mass fraction of processing aid is 2.5 parts；In advance by 600gPVA and
160g starch is dried under the conditions of 80 DEG C, by after drying PVA, starch, 60gZSM-5,30g essential oil, 100g glycerol,
Through dual-screw pelletizer extruding pelletization after 20gTMP6000,10g Irganox2455 and 20g EBS stirring are homogeneous, TMP6000,
The mass ratio of Irganox2455 and EBS is 2:1:2.Wherein, area's heating temperature is 170 DEG C, and two area's heating temperatures are 170 DEG C,
Three-zone heating temperature is 175 DEG C, and four area's heating temperatures are 180 DEG C, and five area's heating temperatures are 180 DEG C, and six area's heating temperatures are 175
DEG C, seven area's heating temperatures are 170 DEG C.The screw rod rotation speed of dual-screw pelletizer is 40r/min.
(2) corresponding host on coextrusion casting machine is added in obtained antibacterial layer resin particle, is squeezed through coextrusion casting machine
Molding, and lamination obtains slow-release preserving fruit and vegetable utilizing paper membrane on brown paper surface rapidly.
(3) above-mentioned fresh-keeping paper membrane is sealed by heat sealing machine, obtains slow-release preserving fruit and vegetable utilizing paper bag C.
Described to coextrude them into during type, the revolving speed of the roller of multi-layer co-extruded casting machine is 1r/min, multi-layer co-extruded curtain coating
The roller of machine includes lamination roller, counter-pressure cylinder and traction roller, and lamination roller temperature is 90 DEG C.
Embodiment 6
(1) antibacterial layer resin particle is prepared, base-material is PVA and starch, has loaded molecule in the inorganic carrier of plants essential oil
Sieve is ZSM-5, and essential oil is Herba Origani Vulgaris quintessence oil, and the mass ratio of ZSM-5 and Herba Origani Vulgaris quintessence oil is 2:1, modifying agent is glycerol, processing aid is
TMP6000, Irganox2455 and EBS, the mass fraction of base-material are 38 parts, have loaded the quality of the inorganic carrier of plants essential oil
Number is 4.5 parts, and the mass fraction of modifying agent is 5 parts, and the mass fraction of processing aid is 2.5 parts；In advance by 650gPVA and
110g starch is dried under the conditions of 80 DEG C, by after drying PVA, starch, 60gZSM-5,30g essential oil, 100g glycerol,
Through dual-screw pelletizer extruding pelletization after 20gTMP6000,10g Irganox2455 and 20g EBS stirring are homogeneous, TMP6000,
The mass ratio of Irganox2455 and EBS is 2:1:2.Wherein, area's heating temperature is 170 DEG C, and two area's heating temperatures are 170 DEG C,
Three-zone heating temperature is 175 DEG C, and four area's heating temperatures are 180 DEG C, and five area's heating temperatures are 180 DEG C, and six area's heating temperatures are 175
DEG C, seven area's heating temperatures are 170 DEG C.The screw rod rotation speed of dual-screw pelletizer is 40r/min.
(2) corresponding host on coextrusion casting machine is added in obtained antibacterial layer resin particle, is squeezed through coextrusion casting machine
Molding, and lamination obtains slow-release preserving fruit and vegetable utilizing paper membrane on brown paper surface rapidly.
(3) above-mentioned fresh-keeping paper membrane is sealed by heat sealing machine, obtains slow-release preserving fruit and vegetable utilizing paper bag D.
Described to coextrude them into during type, the revolving speed of the roller of multi-layer co-extruded casting machine is 1r/min, multi-layer co-extruded curtain coating
The roller of machine includes lamination roller, counter-pressure cylinder and traction roller, and lamination roller temperature is 90 DEG C.
Since PVA and starch have hygroscopicity, in order to maintain the relative humidity inside fresh-keeping paper bag, fruits and vegetables moisture is reduced
Volatilization, has investigated storage period, and temperature is the moisture stream of strawberry in exposed blank group, fresh-keeping paper bag B, C and D at 20-25 DEG C
Mistake rate, experimental group setting and experimental result are as shown in table 4：
The turnover rate of the fresh-keeping paper bag medium-height grass certain kind of berries moisture of table 4
Table 4 is the results show that the juice loss rate of sample sets illustrates that fresh-keeping paper bag can make to maintain in bag much smaller than blank group
One suitable relative humidity, so that it is effectively reduced the water loss rate of strawberry, especially fresh-keeping paper bag C, i.e., as PVA and shallow lake
The mass ratio of powder is 15:When 4, water loss rate is minimum.
Embodiment 7
In order to not influence the eupnea of fruits and vegetables, the microorganism of fruit and vegetable surfaces is inhibited to grow, thus guarantee fruits and vegetables quality, and
The shelf life for extending fruits and vegetables has been investigated on the basis of the formula composition of embodiment 5 and preparation method and has loaded plants essential oil
Inorganic carrier content to the total plate count of Xiaoqinling Nature Reserve in the OTR oxygen transmission rate of fresh-keeping paper bag, storage period (24 DEG C) fresh-keeping paper bag and
The influence of its sense organ, shown in experimental group setting and experimental result such as table 5 (OTR oxygen transmission rate) and table 6 (total plate count)：
Table 5 has loaded influence of the inorganic carrier mass fraction of plants essential oil to OTR oxygen transmission rate
Table 6 has loaded influence of the inorganic carrier mass fraction of plants essential oil to total plate count
Table 5 the results show that fresh-keeping paper bag OTR oxygen transmission rate with the inorganic carrier content for having loaded plants essential oil increasing
Add and increases；Table 6 is the results show that relative to exposed Xiaoqinling Nature Reserve in the environment, fresh-keeping paper bag can effectively inhibit Xiaoqinling Nature Reserve
The total plate count on surface, and total plate count is reduced with the increase for the inorganic carrier content for having loaded plants essential oil.Work as load
When the mass fraction of the inorganic carrier of plants essential oil is 4.5 parts, the OTR oxygen transmission rate of fresh-keeping paper bag is maximum, and fungistatic effect is most
It is good.But the speed that mass fraction softens for the Xiaoqinling Nature Reserve in the fresh-keeping paper bag of 4.5 parts of the inorganic carrier for having loaded plants essential oil
Degree will be faster than the fresh-keeping paper bag for the inorganic carrier for having loaded plants essential oil that mass fraction is 3.5 parts；And mass fraction is 4.5 parts
The inorganic carrier for having loaded plants essential oil fresh-keeping paper bag in Xiaoqinling Nature Reserve influenced by essential oil taste it is very big, at the 4th day its
Smell is just in unacceptable range, and the smell then at the 8th day that mass fraction is 3.5 parts is just in unacceptable range.
In general, when the inorganic carrier mass fraction for having loaded plants essential oil is 3.5 parts, fresh-keeping paper bag has best fresh-keeping effect
Fruit can extend shelf life 4 days of Xiaoqinling Nature Reserve or so.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of slow-release preserving fruit and vegetable utilizing paper membrane, including the paper layer being stacked and antibacterial layer, the paper layer and antibacterial layer
Thickness be respectively 100~120 μm and 20~40 μm；
The antibacterial layer includes the component of following mass fraction content：
The processing aid is that polymeric epoxy is functionalized one of chain extender, antioxidant and regulator or a variety of.
2. fresh-keeping paper membrane according to claim 1, which is characterized in that the plants essential oil be Rosa Damascana, laurin oil,
Tea tree ethereal oil, eucalyptus quintessence oil, Peppermint essential oil, fennel essential oil, clove oil, Herba Origani Vulgaris quintessence oil, Rosemary Oil and thyme essence
One of oil is a variety of.
3. fresh-keeping paper membrane according to claim 1, which is characterized in that the inorganic carrier is montmorillonite, zeolite, diatom
Soil, phosphoric acid soil or molecular sieve.
4. fresh-keeping paper membrane according to claim 3, which is characterized in that the molecular sieve be MCM-41, ZSM-5, HZSM-5,
SBA-15, SPAO-11, SPAO-34, SSZ-13 or ITQ-13.
5. fresh-keeping paper membrane according to claim 1, which is characterized in that the mass ratio of the inorganic carrier and essential oil be 1~
3：1.
6. fresh-keeping paper membrane described in any one according to claim 1~5, which is characterized in that the polymeric epoxy functionalization
Chain extender is CHE4370, KL-E4300, KL-E4370, KL-E4370B or TMP6000.
7. fresh-keeping paper membrane described in any one according to claim 1~5, which is characterized in that the antioxidant is antioxidant
1222, antioxidant 1076, antioxidant 1010, antioxidant 1098, antioxidant 2246, antioxidant 2246-S, BBM, antioxidant 3114,
Antioxidant 3125, antioxidant 1330 or Irganox245.
8. the preparation method of fresh-keeping paper membrane described in claim 1~7 any one, which is characterized in that include the following steps：
It is granulated after each component in antibacterial layer is mixed according to the weight fraction, obtains antibacterial layer resin particle；
By antibacterial layer resin particle, lamination obtains slow-release preserving fruit and vegetable utilizing paper membrane in paper layer single side surface after extrusion forming；
The thickness of the paper layer and antibacterial layer is respectively 100~120 μm and 20~40 μm.
9. preparation method according to claim 8, which is characterized in that the equipment of the extrusion forming is coextrusion casting machine,
The roller of the coextrusion casting machine includes lamination roller, counter-pressure cylinder and traction roller, and the lamination roller temperature is 70~110 DEG C；
The revolving speed of the lamination roller, counter-pressure cylinder and traction roller independently is 0.5~1.5r/min.
10. preparation method system described in fresh-keeping paper membrane or claim 8~9 any one described in claim 1~7 any one
Application of the fresh-keeping paper membrane obtained in preserving fruit and vegetable utilizing, which is characterized in that the antibacterial layer is contacted with fruits and vegetables.
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