CN104309903A - Preservative film for short-term storage of fruits and vegetables, preparation method of preservative film and prepared preservative bag - Google Patents
Preservative film for short-term storage of fruits and vegetables, preparation method of preservative film and prepared preservative bag Download PDFInfo
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- CN104309903A CN104309903A CN201410499541.3A CN201410499541A CN104309903A CN 104309903 A CN104309903 A CN 104309903A CN 201410499541 A CN201410499541 A CN 201410499541A CN 104309903 A CN104309903 A CN 104309903A
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- fruits
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- 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
Abstract
The invention discloses a preservative film for short-term storage of fruits and vegetables. A micro-foamed film body with a surface layer for slowing down water loss and adsorbing ethylene is formed on the preservative film, and the density of the film body is 0.5-0.9 g/cm<3>. The invention further discloses a preparation method of the preservative film for short-term storage of the fruits and the vegetables. The invention further discloses a preservative bag produced by using the components and the preparation method. By adopting the technical scheme of the invention, the film has sufficient adsorption capacity for ethylene gas wrapped in the film, and the adsorption capacity cannot be reduced obviously under natural ambient conditions, so that the speed of maturing and decaying the fruits and the vegetables wrapped by using the preservative film is effectively reduced, the decomposition time of the fruits and the vegetables is prolonged, the freshness of the fruits and the vegetables is guaranteed, and the decomposition of matured fruits and vegetables is also avoided; through the addition of catalysts, micro foams on the surface of the film body are promoted, the freshness of the fruits and the vegetables is guaranteed, and the maturity and decomposition of the fruits and vegetables cause by the concentration of the ethylene gas are also avoided.
Description
Technical field
The invention belongs to packing articles field, more particularly, the present invention relates to a kind of freshness protection package for the preservative film of fruits and vegetables short term stored and the preparation method of preservative film and preparation.
Background technology
Vegetables and fruits after gathering in storage and transport process, cause because of factors such as bacterium, temperature, moisture, ethylene gas vegetables and fruits surface produces shrinkage, gloss disappears, well-done deliquescing, the phenomenon of even rotting, going mouldy, be called lose fresh; Improve or slow down the methods and measures of the generation of above-mentioned phenomenon, be then called fresh-keeping; After gathering, vegetables and fruits surface can attached a large amount of germ, and comprise bacterium, virus, mould etc., cause injury in grazing or other reason, especially when temperature is higher, the breeding of its germ can be accelerated greatly, and causes the rotting of vegetables and fruits, rotten; After the vegetables and fruits of firm harvesting leave parent, the moisture in its body can scatter and disappear gradually, have up to more than 5%, not only the alleviating of weight, and blade face here Huang, epidermis shrinkage, gloss disappear, there is the mistake fresh phenomenon of vegetables and fruits because of moisture transpiration; Vegetables and fruits after gathering, meeting releasing ethylene gas in maturation, ethylene gas knows from experience the maturation stimulating vegetables and fruits, as can not be effectively disposed, can accelerate the maturation of vegetables and fruits, cause rotting.
In sum: the vegetables and fruits after gathering, except actv. kill harmful bacterium, prevent from damaging, select suitable storage temperature except, how to prevent moisture loss, slow down the key that maturation that ethylene gas accelerates vegetables and fruits just becomes the fresh-keeping raising income of vegetables and fruits; The preservative film bag of prior art, although actv. slows down scattering and disappearing of vegetables and fruits moisture, and the ethylene gas of vegetables and fruits release gathers in the bag closed, and ethylene gas gathering in the bag closed is accelerated fruit maturation and rotted.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of fresh-keeping preservative film for fruits and vegetables short term stored avoiding again ethylene gas to assemble causing fruits and vegetables maturation to be rotted ensureing fruits and vegetables, the invention also discloses the preparation method of the preservative film for fruits and vegetables short term stored, the invention also discloses use above-mentioned prescription and preparation method to produce freshness protection package.
To achieve these goals, the technical scheme that the present invention takes is a kind of preservative film for fruits and vegetables short term stored provided, and preservative film forms the film body with the fretting map on the top layer of slowing down water loss and ethylene adsorption, and the density of film body is 0.5 ~ 0.9g/cm
3.
A kind of preservative film for fruits and vegetables short term stored disclosed by the invention, film body comprises the blending resin 20% ~ 80% of following weight parts; Plant amylum 15 ~ 60%; Solid additive 1 ~ 10% is made, and preferably, film body comprises the blending resin 68% of following weight parts; Modified starch 30%; Solid additive 2%.
A kind of preservative film for fruits and vegetables short term stored disclosed by the invention, solid additive is that molecular sieve type auxiliary agent, hybrid metal salt assitant are as A1C1
3, AICl
3-CuCl
2; A1Br
3, SbF
5-FSO, H; Or the metal oxide auxiliary agent of modified by sulfate radicle is as SO4/MxOy (M=Fe, Sn, Zr) or fluorinated sulfonic resin additive wherein one or more.
A kind of preservative film for fruits and vegetables short term stored disclosed by the invention, blending resin comprises HDPE, LLDPE, LDPE one or more copolymer wherein.
A kind of preservative film for fruits and vegetables short term stored disclosed by the invention, modified starch comprises sodium carboxymethyl starch, modified starch or CMS industrial starch.
The invention also discloses a kind of preparation method of the preservative film for fruits and vegetables short term stored, comprise the preparation of coating materials and the preparation of film body; Wherein the preparation process of coating materials is as follows:
(1) proportionally blending resin, solid additive and modified starch are carried out that heat is mixed makes its congruent melting respectively;
(2) mixing, Exhaust Gas and unnecessary moisture in mixing process, then plasticizing is extruded;
(3) the material pelletizing of extruding, after cooling, encapsulation is for subsequent use;
The preparation process of film body is as follows: add in inflation film manufacturing machine by particle for subsequent use, heating plasticizing, then squeezes the water out under vacuum state, blowfilm shaping, the film body that film outlet port place fretting map is made, and rolling is for subsequent use; The density of film body is 0.5 ~ 0.9g/cm
3, film body surface is formed has the top layer of slowing down water loss and ethylene adsorption.
The preparation method of a kind of preservative film for fruits and vegetables short term stored disclosed by the invention, in the process of blowfilm shaping, screw rod heating-up temperature is greater than die temperature 20 DEG C ~ 30 DEG C, and the temperature of screw rod is 170 ~ 190 DEG C, screw speed >=200 turn/min.
The preparation method of a kind of preservative film for fruits and vegetables short term stored disclosed by the invention, in the process of blowfilm shaping, degree of vacuum is 0.6 ~ 0.8MPa.
The preparation method of a kind of preservative film for fruits and vegetables short term stored disclosed by the invention, the temperature that the heat of the preparation process of coating materials is mixed is 110 ~ 160 DEG C.
The invention also discloses the freshness protection package of packaging bag fruits and vegetables short term stored that a kind of preservative film for fruits and vegetables short term stored comprises the preservative film for fruits and vegetables short term stored made according to above-mentioned prescription and prepares according to the preparation method of the preservative film for fruits and vegetables short term stored, the preservative film that this freshness protection package has the fretting map on the top layer of slowing down water loss and ethylene adsorption by film body surface is made, and the density of this freshness protection package is 0.5 ~ 0.9g/cm
3.
A kind of preservative film for fruits and vegetables short term stored disclosed by the invention, preservative film forms the film body with the fretting map on the top layer of slowing down water loss and ethylene adsorption, and the density of film body is 0.5 ~ 0.9g/cm
3, film body comprises the blending resin 20% ~ 80% of following weight parts, plant amylum 15 ~ 60%, and solid additive 1 ~ 10% is made, and preferably, film body comprises the blending resin 68% of following weight parts, modified starch 30%, solid additive 2%, adopt technical scheme of the present invention, this film has enough adsorption poweies to coated ethylene gas wherein, and can not because there is obviously decay under regular air conditions, effectively slow down the ripe speed of rotting of the fruits and vegetables using this preservative film coated, extend the time that fruits and vegetables rot, ensure that the fresh-keeping of fruits and vegetables avoids again rotting of ripe fruits and vegetables, add catalyst, facilitate film body surface fretting map, ensure that this film has enough adsorption poweies to coated ethylene gas wherein, overcome prior art fruit and can discharge ethene in maturation, it is ripe that acceleration fruit assembled by ethene in the bag closed, fruits and vegetables are fresh-keeping for a long time to be deposited, cause again the defect of rotting of ethene hasting of maturity fruits and vegetables, this film is except having above-mentioned fresh-keeping function, its fretting map film body plays the effect slowing down collision at storage and transport process, this film body also has higher mechanical characteristics, its pulling strengrth is greater than 12MPa, this film body has good processing characteristics, its heat seal strength is greater than 6N/15mm, this preservative film easy to use bag on traditional Bag Making Machine.
Adopt freshness protection package prepared by the present invention, film body surface forms the freshness protection package having physical adsorption film and make, the moisture of fruits and vegetables can be pinned by actv., in absorbent packet, fruits and vegetables decompose the ethylene gas of release, the breathing of effective suppression vegetables and fruits, make it be in dormant state, thus extend the fresh-keeping storage time of fruits and vegetables; At the same terms, the fruits and vegetables that the freshness protection package adopting the present invention to prepare is fresh-keeping, compared with the fruits and vegetables that freshness protection package commercially available is at present fresh-keeping, fresh keeping time can extend 1 ~ 4 times, and water loss is lower than 1% ~ 5% of vegetables and fruits total weight; Because of moisture, the sugared grading factors of different vegetables and fruits, fresh-keeping result can difference to some extent, and moisture lower fruits and vegetables, the fresh-keeping time is more of a specified duration.
Blending resin comprises HDPE, LLDPE, LDPE one or more copolymer wherein; Solid additive is molecular sieve type catalyst or sulfate type acidic catalyst, adopt above-mentioned composition, keep moisture by lock water, sterilization, suppress germ, far products is made to keep the fresh state time to reach more than twice, weight runs off lower than 0.5%, make fruits and vegetables keep optimum regime, and nutrient, color and luster, the same all with during freshly harvested of mouthfeel, listing rate height again can the advantage of guaranteed price; The respiration of fruits and vegetables can be suppressed, delay precocity, aging; Blending resin comprises HDPE, LLDPE, LDPE one or more copolymer wherein, and raw material sources are extensive, and productive costs is low; Solid additive is that molecular sieve type auxiliary agent, hybrid metal salt assitant are as A1C1
3, AICl
3-CuCl
2; A1Br
3, SbF
5-FSO, H; Or the metal oxide auxiliary agent of modified by sulfate radicle is as SO4/MxOy (M=Fe, Sn, Zr) or fluorinated sulfonic resin additive wherein one or more, the catalysis of solid additive derives from the acid sites with catalytic activity that solid surface exists, modified starch comprises sodium carboxymethyl starch, modified starch or CMS industrial starch, adding of modified starch, not only reduce cost, ensure the freshness protection package fast degradation after using simultaneously, environmentally friendly.
The invention also discloses a kind of preparation method of the preservative film for fruits and vegetables short term stored, comprise the preparation of coating materials and the preparation of film body; Wherein the preparation process of coating materials is as follows:
(1) proportionally blending resin, solid additive and modified starch are carried out that heat is mixed makes its congruent melting respectively;
(2) mixing, Exhaust Gas and unnecessary moisture in mixing process, then plasticizing is extruded;
(3) the material pelletizing of extruding, after cooling, encapsulation is for subsequent use;
The preparation process of film body is as follows: add in inflation film manufacturing machine by particle for subsequent use, heating plasticizing, then squeezes the water out under vacuum state, blowfilm shaping, the film body that film outlet port place fretting map is made, and rolling is for subsequent use; The density of film body is 0.5 ~ 0.9g/cm
3, film body surface is formed has the top layer of slowing down water loss and ethylene adsorption; Adopt technical scheme of the present invention, existing production facilities just can be produced, and the mode of production is more easy to operate, has saved productive costs.
The invention also discloses the freshness protection package that a kind of preservative film for fruits and vegetables short term stored comprises the preservative film for fruits and vegetables short term stored made according to above-mentioned prescription and the preparation method's packaging bag fruits and vegetables short term stored according to the preservative film for fruits and vegetables short term stored, the preservative film that this freshness protection package has the fretting map on the top layer of slowing down water loss and ethylene adsorption by film body surface is made, and the density of this freshness protection package is 0.5 ~ 0.9g/cm
3, the temperature of the fruit freshness preserving using this freshness protection package to store is 20 ~ 30 DEG C, and the shelf-life can extend 10 to 15 days, and usage condition is wide in range, and the freshness protection package that the shelf-life makes than prior art again extends.
Below with reference to drawings and Examples, the present invention is described in detail.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification sheets and the mark in figure are briefly described:
Fig. 1 is preparation technology's diagram of circuit of the coating materials of the preparation method of a kind of preservative film for fruits and vegetables short term stored of the present invention;
Fig. 2 is preparation technology's diagram of circuit of the film body of the preparation method of a kind of preservative film for fruits and vegetables short term stored of the present invention;
Fig. 3 is the schematic diagram of the mixing extrusion equipment granulating machine of the preparation method of a kind of preservative film for fruits and vegetables short term stored of the present invention.
Be labeled as in figure: 1, screw rod; 2, freeing pipe; 3, loading hopper; 4, die head.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, to the specific embodiment of the present invention as the effect of the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part and principle of work, manufacturing process and operation using method etc., be described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
Modified starch comprises sodium carboxymethyl starch, modified starch or CMS industrial starch, is commercial goods; Blending resin comprises HDPE, LLDPE, LDPE one or more copolymer wherein, and wherein HDPE, LLDPE, LDPE are commercial goods; Solid additive is that molecular sieve type auxiliary agent, hybrid metal salt assitant are as A1C1
3, AICl
3-CuCl
2; A1Br
3, SbF
5-FSO, H; Or the metal oxide auxiliary agent of modified by sulfate radicle is as SO4/MxOy (M=Fe, Sn, Zr) or fluorinated sulfonic resin additive, is commercial goods.
Embodiment 1
The copolymer of HDPE:30kg, LLDPE and LDPE: 38kg; Sodium carboxymethyl starch: 30kg, the metal oxide auxiliary agent A1Br of modified by sulfate radicle
3for 2kg;
The preparation process of coating materials is as follows:
(1) respectively by the copolymer of LLDPE and LDPE of HDPE, 38kg of 30kg, 2kg solid additive A1Br
3carry out with the modified starch sodium carboxymethyl starch of 30kg that heat is mixed makes its congruent melting, the mixed temperature of heat is 140 DEG C;
(2) mixing, Exhaust Gas and unnecessary moisture in mixing process, then plasticizing is extruded;
Mixing extrusion adopts the granulating machine with exhaust gear, the exhaust gear of granulating machine is that one end is placed in the vertical freeing pipe 2 placed of screw rod 1, the axis of freeing pipe 2 and the axis being parallel of loading hopper 3, freeing pipe 2 is positioned near die head 4 one end, plastifies and extrude after getting rid of moisture unnecessary in the mixed material of heat;
(3) the material pelletizing of extruding, after cooling, encapsulation is for subsequent use;
The preparation process of film body is as follows: add in inflation film manufacturing machine by particle for subsequent use, adopt single or multiple lift blown film unit, heating plasticizing, then degree of vacuum is squeeze the water out under the vacuum state of 0.6MPa, and blowfilm shaping, in the process of blowfilm shaping, the temperature of the screw rod of inflation film manufacturing machine is 170 DEG C, die temperature 150 DEG C, film blowing machine screw speed setting is 220 turns/min, the film body that film outlet port place fretting map is made; The density of film body is 0.6g/cm
3, rolling is for subsequent use.
Film body has higher mechanical characteristics, and its pulling strengrth is greater than 12MPa, and this film body also has good processing characteristics, and its heat seal strength is greater than 6N/15mm, this preservative film easy to use bag on traditional Bag Making Machine.
Embodiment 2
The copolymer of LLDPE:32kg, HDPE and LDPE: 34kg; Modified starch: 30kg, molecular sieve type auxiliary agent is 2kg;
The preparation process of coating materials is as follows:
(1) respectively by the copolymer of HDPE and LDPE of LLDPE, 34kg of 32kg, the modified starch of 2kg molecular sieve type auxiliary agent and 30kg carries out that heat is mixed makes its congruent melting, and the mixed temperature of heat is 120 DEG C;
(2) mixing, Exhaust Gas and unnecessary moisture in mixing process, then plasticizing is extruded;
Mixing extrusion adopts the granulating machine with exhaust gear, the exhaust gear of granulating machine is that one end is placed in the vertical freeing pipe 2 placed of screw rod 1, the axis of freeing pipe 2 and the axis being parallel of loading hopper 3, freeing pipe 2 is positioned near die head 4 one end, plastifies and extrude after getting rid of moisture unnecessary in the mixed material of heat;
(3) the material pelletizing of extruding, after cooling, encapsulation is for subsequent use;
The preparation process of film body is as follows: add in inflation film manufacturing machine by particle for subsequent use, adopt single or multiple lift blown film unit, heating plasticizing, then degree of vacuum is squeeze the water out under the vacuum state of 0.8MPa, and blowfilm shaping, in the process of blowfilm shaping, the temperature of the screw rod of inflation film manufacturing machine is 190 DEG C, die temperature 160 DEG C, the screw speed of inflation film manufacturing machine is set as 260 turns/min, the film body that film outlet port place fretting map is made; The density of film body is 0.5g/cm
3, rolling is for subsequent use.
Film body has higher mechanical characteristics, and its pulling strengrth is greater than 12MPa, and this film body also has good processing characteristics, and its heat seal strength is greater than 6N/15mm, this preservative film easy to use bag on traditional Bag Making Machine.
Embodiment 3
The copolymer of LDPE:40kg, HDPE and LLDPE: 34kg; CMS industrial starch: 25kg, mixed metal salt auxiliary agent A ICl
3-CuCl
2for 1kg;
The preparation process of coating materials is as follows:
(1) respectively by the copolymer of HDPE and LLDPE of LDPE, 34kg of 40kg, 1kg mixed metal salt auxiliary agent A ICl
3-CuCl
2carry out with the CMS industrial starch of 25kg that heat is mixed makes its congruent melting, the mixed temperature of heat is 120 DEG C;
(2) mixing, Exhaust Gas and unnecessary moisture in mixing process, then plasticizing is extruded;
Mixing extrusion adopts the granulating machine with exhaust gear, the exhaust gear of granulating machine is that one end is placed in the vertical freeing pipe 2 placed of screw rod 1, the axis of freeing pipe 2 and the axis being parallel of loading hopper 3, freeing pipe 2 is positioned near die head 4 one end, plastifies and extrude after getting rid of moisture unnecessary in the mixed material of heat;
(3) the material pelletizing of extruding, after cooling, encapsulation is for subsequent use;
The preparation process of film body is as follows: add in inflation film manufacturing machine by particle for subsequent use, adopt single or multiple lift blown film unit, heating plasticizing, then degree of vacuum is squeeze the water out under the vacuum state of 0.8MPa, and blowfilm shaping, in the process of blowfilm shaping, the temperature of the screw rod of inflation film manufacturing machine is 180 DEG C, die temperature 160 DEG C, the screw speed of inflation film manufacturing machine is set as 230 turns/min, the film body that film outlet port place fretting map is made; The density of film body is 0.9g/cm
3, rolling is for subsequent use.
Film body has higher mechanical characteristics, and its pulling strengrth is greater than 12MPa, and this film body also has good processing characteristics, and its heat seal strength is greater than 6N/15mm, this preservative film easy to use bag on traditional Bag Making Machine.
Use the bag on traditional Bag Making Machine of the preservative film for fruits and vegetables short term stored that obtains of above-described embodiment respectively, make the freshness protection package parcel honey peach that physical adsorption freshness protection package that thickness is 0.015mm and thickness are 0.015mm, fresh-keeping contrast testing result is as follows:
| Test item title | Embodiment 1 | Embodiment 2 | Embodiment 3 | Commercially available freshness protection package |
| Parcel fruit | Honey peach | Honey peach | Honey peach | Honey peach |
| Standing time (my god) | 15 | 15 | 17 | 8 |
| Serviceability temperature DEG C | 25 | 25 | 25 | 25 |
| Result | Without rotting | Without rotting | Without rotting | Rot obviously |
Use the bag on traditional Bag Making Machine of the preservative film for fruits and vegetables short term stored that above-described embodiment obtains respectively, the common freshness protection package of the thickness made to be the physical adsorption freshness protection package of 0.030mm and thickness be 0.030mm carries out storing and fresh-keeping contrast to the tealeaves just plucked, and states as follows between its experimental result:
Tea fresh keeping contrast test result:
As can be seen from above-mentioned test result, adopt technical scheme of the present invention, film body surface forms the freshness protection package having physical adsorption film and make, the moisture of fruits and vegetables can be pinned by actv., in absorbent packet, fruits and vegetables decompose the ethylene gas of release, the breathing of effective suppression vegetables and fruits, makes it be in dormant state, thus extends the fresh-keeping storage time of fruits and vegetables; At the same terms, the fruits and vegetables that the freshness protection package adopting the present invention to prepare is fresh-keeping, compared with the fruits and vegetables that freshness protection package commercially available is at present fresh-keeping, fresh keeping time can extend 1 ~ 4 times, and water loss is lower than 1% ~ 4% of vegetables and fruits total weight; Because of moisture, the sugared grading factors of different vegetables and fruits, fresh-keeping result can difference to some extent, and moisture lower fruits and vegetables, the fresh-keeping time is more of a specified duration.
Preservative film for fruits and vegetables short term stored prepared by prescription provided by the invention and production technology, the fresh-keeping effect of fruits and vegetables is better, add solid additive, absorption, decomposing ethylene avoid ethene to assemble, effectively slow down the speed of being rotted by fresh-keeping fruits and vegetables maturation, extend the time that fruit rots, the basis of existing installation just can be continued produce, reduce productive costs.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (10)
1. for a preservative film for fruits and vegetables short term stored, it is characterized in that: preservative film forms the film body with the fretting map on the top layer of slowing down water loss and ethylene adsorption, and the density of film body is 0.5 ~ 0.9g/cm
3.
2. according to the preservative film for fruits and vegetables short term stored according to claim 1, it is characterized in that: described film body comprises the blending resin 20% ~ 80% of following weight parts; Plant amylum 15 ~ 60%; Solid additive 1 ~ 10% is made.
3. according to the preservative film for fruits and vegetables short term stored described in claim 1 or 2, it is characterized in that: described solid additive is that molecular sieve type auxiliary agent, hybrid metal salt assitant are as A1C1
3, AICl
3-CuCl
2; A1Br
3, SbF
5-FSO, H; Or the metal oxide auxiliary agent of modified by sulfate radicle is as SO4/MxOy (M=Fe, Sn, Zr) or fluorinated sulfonic resin additive wherein one or more.
4. according to the preservative film for fruits and vegetables short term stored described in claim 1 or 2, it is characterized in that: described blending resin comprises HDPE, LLDPE, LDPE one or more copolymer wherein.
5. according to the preservative film for fruits and vegetables short term stored described in claim 1 or 2, it is characterized in that: described modified starch comprises sodium carboxymethyl starch, modified starch or CMS industrial starch.
6. according to the preparation method of the preservative film for fruits and vegetables short term stored described in any one of Claims 1 to 5, it is characterized in that: comprise the preparation of coating materials and the preparation of film body; Wherein the preparation process of coating materials is as follows:
(1) proportionally blending resin, solid additive and modified starch are carried out that heat is mixed makes its congruent melting respectively;
(2) mixing, Exhaust Gas and unnecessary moisture in mixing process, then plasticizing is extruded;
(3) the material pelletizing of extruding, after cooling, encapsulation is for subsequent use;
The preparation process of film body is as follows: add in inflation film manufacturing machine by particle for subsequent use, heating plasticizing, then squeezes the water out under vacuum state, blowfilm shaping, the film body that film outlet port place fretting map is made, and rolling is for subsequent use; The density of film body is 0.5 ~ 0.9g/cm
3, film body surface is formed has the top layer of slowing down water loss and ethylene adsorption.
7. according to the preparation method of the preservative film for fruits and vegetables short term stored according to claim 6, it is characterized in that: in the process of described blowfilm shaping, screw rod heating-up temperature is greater than die temperature 20 DEG C ~ 30 DEG C, and the temperature of screw rod is 170 ~ 190 DEG C, screw speed >=200 turn/min.
8. according to the preparation method of the preservative film for fruits and vegetables short term stored according to claim 6, it is characterized in that: in the process of described blowfilm shaping, degree of vacuum is 0.6 ~ 0.8MPa.
9. according to the preparation method of the preservative film for fruits and vegetables short term stored according to claim 6, it is characterized in that: the temperature that the heat of the preparation process of described coating materials is mixed is 110 ~ 160 DEG C.
10. the preservative film for fruits and vegetables short term stored, it is characterized in that: comprise according to the preservative film for fruits and vegetables short term stored described in any one of Claims 1 to 5 and the freshness protection package of fruits and vegetables short term stored prepared according to the preparation method of the preservative film for fruits and vegetables short term stored described in any one of claim 6 ~ 9, the preservative film that this freshness protection package has the fretting map on the top layer of slowing down water loss and ethylene adsorption by film body surface is made, and the density of this freshness protection package is 0.5 ~ 0.9g/cm
3.
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| CN201410499541.3A CN104309903A (en) | 2014-09-25 | 2014-09-25 | Preservative film for short-term storage of fruits and vegetables, preparation method of preservative film and prepared preservative bag |
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|---|---|---|---|
| CN201410499541.3A CN104309903A (en) | 2014-09-25 | 2014-09-25 | Preservative film for short-term storage of fruits and vegetables, preparation method of preservative film and prepared preservative bag |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106275770A (en) * | 2016-08-30 | 2017-01-04 | 中山市振鸿包装科技有限公司 | A kind of bio-based multifunctional fresh-keeping bag |
| CN107522928A (en) * | 2017-07-14 | 2017-12-29 | 中山市振鸿包装科技有限公司 | A kind of half fretting map preservative film |
| CN107581448A (en) * | 2017-10-18 | 2018-01-16 | 常德金德新材料科技股份有限公司 | Natural anti-mildew antistaling coating and its preparation method and application |
| CN107718825A (en) * | 2017-09-29 | 2018-02-23 | 安徽五源食品有限公司 | A kind of environmentally friendly freshness protection package and preparation method thereof |
| CN108314805A (en) * | 2018-01-28 | 2018-07-24 | 朱春英 | Degradable gas phase fruit-vegetable plastic wrap and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6193835A (en) * | 1984-10-16 | 1986-05-12 | Mitsuo Matsui | Catalytic material for adsorbing and oxidizing low-molecular gas |
| CN1580104A (en) * | 2004-05-18 | 2005-02-16 | 广西大学 | Fruit-vegetable fresh-retaining film, and its production method and equipment |
| CN101235156A (en) * | 2007-11-16 | 2008-08-06 | 江苏科技大学 | Polylactic acid/thermoplastic starch extrusion blow molding film and its producing method and application |
| CN101269719A (en) * | 2008-05-01 | 2008-09-24 | 钟楚杰 | Controlled atmosphere fresh-keeping bag and sterilized controlled atmosphere fresh-keeping method |
-
2014
- 2014-09-25 CN CN201410499541.3A patent/CN104309903A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6193835A (en) * | 1984-10-16 | 1986-05-12 | Mitsuo Matsui | Catalytic material for adsorbing and oxidizing low-molecular gas |
| CN1580104A (en) * | 2004-05-18 | 2005-02-16 | 广西大学 | Fruit-vegetable fresh-retaining film, and its production method and equipment |
| CN101235156A (en) * | 2007-11-16 | 2008-08-06 | 江苏科技大学 | Polylactic acid/thermoplastic starch extrusion blow molding film and its producing method and application |
| CN101269719A (en) * | 2008-05-01 | 2008-09-24 | 钟楚杰 | Controlled atmosphere fresh-keeping bag and sterilized controlled atmosphere fresh-keeping method |
Non-Patent Citations (3)
| Title |
|---|
| 周晓媛等: "果蔬保鲜膜的保鲜机理与研究进展", 《食品研究与开发》 * |
| 李家政: "微孔保鲜膜制备方法与应用", 《保鲜与加工》 * |
| 杨思广等: "微孔保鲜膜研究的进展", 《化工技术与开发》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106275770A (en) * | 2016-08-30 | 2017-01-04 | 中山市振鸿包装科技有限公司 | A kind of bio-based multifunctional fresh-keeping bag |
| CN107522928A (en) * | 2017-07-14 | 2017-12-29 | 中山市振鸿包装科技有限公司 | A kind of half fretting map preservative film |
| CN107718825A (en) * | 2017-09-29 | 2018-02-23 | 安徽五源食品有限公司 | A kind of environmentally friendly freshness protection package and preparation method thereof |
| CN107581448A (en) * | 2017-10-18 | 2018-01-16 | 常德金德新材料科技股份有限公司 | Natural anti-mildew antistaling coating and its preparation method and application |
| CN108314805A (en) * | 2018-01-28 | 2018-07-24 | 朱春英 | Degradable gas phase fruit-vegetable plastic wrap and preparation method thereof |
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