CN103660437B - A kind of impermeable retort pouch of nanometer and its nanometer binder and manufacture method - Google Patents
A kind of impermeable retort pouch of nanometer and its nanometer binder and manufacture method Download PDFInfo
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Abstract
The present invention is a kind of impermeable retort pouch of nanometer and its nanometer binder and manufacture method.The impermeable retort pouch of nanometer is made by nano composite membrane, and nano composite membrane includes the internal layer membrane being sequentially connected by nanometer binder（1）And outer membrane（7）, nanometer binder penetrates into internal layer membrane（1）In internal layer membrane micropore（2）Middle formation root hair（4）, nanometer binder penetrates into outer membrane（7）In outer membrane micropore（8）In also form root hair（4）, and in internal layer membrane（1）Interior root hair（4）With outer membrane（7）Interior root hair（4）Between formed adhesive layer（3）.The present invention is fabricated to the impermeable retort pouch of nanometer using nanometer binder, and nanometer binder makes adhesive layer closely be integrally formed with each layer film, and cohesive force is superpower, and nanometer binder has blocked each layer film micropore simultaneously, to reach purpose that is fresh-keeping and extending the shelf life.The manufacture method of the present invention is convenient and practical.
Description
Technical field
The present invention relates to food pack field, the cohesive force made particularly to a kind of nanometer binder and by it is superpower
With the impermeable retort pouch of nanometer of zero infiltration, belong to the innovation of the impermeable retort pouch of nanometer and its nanometer binder and manufacture method
Technology.
Background technology
Retort pouch refers to be used for packaged food, medical apparatus etc. and be amenable to (more than 100 DEG C) heating of high-temperature steam killing
The packaging bag that the laminated film of bacterium is made, also referred to as can the flexible package of steaming and decocting or soft canned.Retort pouch food compared with canned food,
Using flexible packages, impose not aeriferous reserved capacity vacuum packaging, form compact and relatively thin packaged configuration, its biography
Heat is fast, can reach bactericidal effect at short notice, thus becomes the main trend of 21 century food industry packaging bag.
For reaching fresh-keeping, long-term storage etc., retort pouch need to be made up of multilamellar, outer layer Multi-purpose mechanical intensity height, choke, resistance
Wet, fragrant, heat-resisting, transparent, cold-resistant, water-fast, oil resistant the mylar of guarantor（PET）, the multiplex barrier in middle level and high- and low-temperature resistance are special
Good opaque aluminium foil (AL) or transparent PVDC plastic sheeting, internal layer multipurpose sanitary, oil resistant, chemicals-resistant and heat sealability are excellent
Polypropylene film (CPP).According to G810004-1998《The composite membrane of resistance to steaming and decocting, bag》, retort pouch mainly has the PET/CPP of transparent type
Two-layer structure, PA/CPP two-layer structure and PET/PA/CPP three-decker, and the PET/ AL of opaque type/CPP, PA/
AL/CPP three-decker and PET/ AL/PA/CPP four-layer structure.Pass through composite adhesive between layers（As conventional poly- ammonia
Ester gum stick）Carry out bonding it is desirable to composite adhesive all should have good cementability to multiple material, there is solidification speed simultaneously
Spend the overall characteristics such as fast, heatproof is high, anti-medium corrodes, transparency is high and harmless.
For the preparation of retort pouch, mainly there are dry type composite algorithm, solvent-free composite algorithm and coextrusion composite algorithm, and with dry type
Composite algorithm is leading.But, the retort pouch prepared by dry type composite algorithm at present, it is susceptible to glue-line adhesive strength step-down, outward
Layer nylon（PA）With intermediate layer aluminium foil（AL）Between occur separate, sack local wrinkling；Salt, acid, peppery, spice in food,
The lower permeation composite membrane internal layer of the effect such as alcohol, water, sugar, sulfur, fatty acid, oils and fatss and albumen penetrates into glue-line, plays corrosion failure effect, leads
Cause packaging bag delamination, rupture so that losing efficacy；Meanwhile, the small molecule in adhesive during high temperature steaming is easily by interior strata third
The migration of alkene thin film (CPP) micropore is penetrated in food, leads to food spoilage.
The problems referred to above have had a strong impact on the practicality of retort pouch, lead to food spoilage in advance, reduce the shelf-life of food,
Thus R＆D institution of various countries and food packaging manufacturer all put into that substantial amounts of manpower and materials research structure is more reasonable, caking property is preferably glued
Knot agent, such as CN200410067662.7 discloses the retort pouch of resistance to cryogenic refrigeration performance, CN201010557839.7 discloses one
Kind more environmentally friendly binding agent, CN201220108112.5, TWM458387, CA2638099, US20080056624,
WO2006067363, KR20070104345 etc. individually disclose the various binding agents preparing retort pouch and steaming and decocting bag technique.At present
Known patented technology and document are all not involved with adopting nanometer binder to penetrate into retort pouch each layer film micropore to strengthen
The technology of adhesive property.
Content of the invention
It is an object of the invention to provide a kind of enter retort pouch each layer film micropore by adhesive nanoparticle penetration
Form the impermeable retort pouch of nanometer of zero infiltration of bonding root hair.The invention enables it is salt in packaging food, acid, peppery, fragrant pungent
Material, alcohol, water, sugar, sulfur, fatty acid, oils and fatss and albumen etc. cannot permeate, to reach purpose that is fresh-keeping and extending the shelf life.
Another object of the present invention is to providing a kind of receiving of impermeable retort pouch of making nanometer with superpower cohesive force
Rice binding agent.
It is still another object of the present invention to provide a kind of make simple, easy to operate, the making nanometer binder of low cost
Method.
Another object of the present invention provides a kind of making simple, easy to operate, the impermeable steaming and decocting of making nanometer of low cost
The method of bag.
The impermeable retort pouch of nanometer of the present invention, is made by nano composite membrane, nano composite membrane is included by nanometer
Internal layer membrane and outer membrane that binding agent is sequentially connected, nanometer binder penetrates into the internal layer membrane micropore in internal layer membrane
Middle formation root hair, also forms root hair in the outer membrane micropore that nanometer binder penetrates in outer membrane, and thin in internal layer
Form adhesive layer between the root hair in root hair and outer membrane in film；Described polyurethane binder is containing main glue and firming agent
Nontoxic binding agent without bisphenol-A；Described polyurethane binder includes following component：Diethylene glycol 10wt%～17wt%, vinegar
Acetoacetic ester 42wt%～48wt%, methyl diphenylene diisocyanate 3wt%～6wt%, 1.2 1 propylene glycol 2wt%～3wt%, isophthalic
Dioctyl phthalate 5.5wt%～6wt%, decanedioic acid 20wt%～37.5wt%.
It is additionally provided with the intermediate barrier layer being connected by nanometer binder, nanometer is glued between described internal layer membrane and outer membrane
Tie in the intermediate barrier layer micropore that agent penetrates in intermediate barrier layer and form root hair, and the root hair in internal layer membrane and centre
Intercept and form adhesive layer between in the layer root hair, between the root hair in root hair and outer membrane in intermediate barrier layer, also form glue
Adhesion coating.
It is provided between described internal layer membrane and outer membrane and some intermediate barrier layer are connected with by nanometer binder.
The material of described internal layer membrane is polypropylene film CPP or density polyethylene film with high HDPE, intermediate barrier layer
Material is aluminium foil or polyvinylidene chloride film PVDC or polyvinyl alcohol film PVA, and the material of outer membrane is nylon film PA
Or mylar PET.
The present invention makes the nanometer binder of the impermeable retort pouch of nanometer, including following component：Nanometer couplant 3wt%～
7wt%, BPF epoxy resin 4wt%～10wt%, polyurethane binder 83wt%～93wt% without bisphenol-A.
Described polyurethane binder is the nontoxic binding agent without bisphenol-A containing main glue and firming agent.
Described polyurethane binder includes following component：Diethylene glycol 10wt%～17wt%, ethyl acetate 42wt%～48wt%,
Methyl diphenylene diisocyanate 3wt%～6wt%, 1.2 1 propylene glycol 2wt%～3wt%, M-phthalic acid 5.5wt%～6wt%,
Decanedioic acid 20wt%～37.5wt%.
Described nanometer couplant is CNT between 30nm～120nm for the granularity, nano silicon, nanometer two
Titanium oxide, nanometer Ag-SiO2One of or multiple combinations.
The manufacture method of nanometer binder of the present invention, comprises the steps：
1）Decanedioic acid and diethylene glycol are mixed by mass percent, is heated up at 180～240 DEG C of a certain temperature in nitrogen
With ferment at constant temperature under amines catalyst 20～30 hours, then add 1.2 1 propylene glycol and M-phthalic acid by weight percent,
Ferment at constant temperature 10～20 hours at 170～230 DEG C of a certain temperature；By the material after fermentation in 0.5～0.8Mpa atmospheric pressure
In equipment, generate intermediate raw material polyurethane and waste water, useless alcohol；The raw material polyurethane generating is added above-mentioned mass fraction diphenyl
Methane diisocyanate, is slowly ramped to 60～120 DEG C after mixing, form main glue；Above-mentioned mass fraction ethyl acetate is added
Main glue, is warming up to 70～110 DEG C, forms polyurethane binder；
2）By the epoxy resin mixing without bisphenol-A of the nanometer couplant of 3wt%～7wt% and 4wt%～10wt%, put into
Vibrate 20～40 minutes in ultrasonic vibrator, form epoxide resin nano；Described nanometer couplant be granularity 30nm～
CNT between 120nm, nano silicon, nano titanium oxide, nanometer Ag-SiO2One of or multiple groups
Close；
3）Epoxide resin nano is mixed with green polyurethane binder of 83wt%～93wt%, puts in blender 60
Stir 1～2 hour at～80 DEG C, vacuum defoamation；
4）Supersonic vibration 30～60 minutes in ultrasonic vibrator, stand 1～2 day, form nanometer binder.
The manufacture method of the impermeable retort pouch of nanometer of the present invention, nano composite membrane is made by dry type composite algorithm, by nanometer
After binding agent is compound between internal layer membrane, intermediate barrier layer and outer membrane, need to be positioned in temperature control room at 40～80 DEG C
Lower ripening 1～3 day, forms root hair and adhesive layer；Described nanometer binder includes following component：Nanometer couplant 3wt%～
7wt%, BPF epoxy resin 4wt%～10wt%, polyurethane binder 83wt%～93wt% without bisphenol-A；Described viscoelastic polyurethane
Mixture is the nontoxic binding agent without bisphenol-A containing main glue and firming agent；Described polyurethane binder includes following component：
Diethylene glycol 10wt%～17wt%, ethyl acetate 42wt%～48wt%, methyl diphenylene diisocyanate 3wt%～6wt%, 1.2 1
Propylene glycol 2wt%～3wt%, M-phthalic acid 5.5wt%～6wt%, decanedioic acid 20wt%～37.5wt%.
The impermeable retort pouch of nanometer of the present invention is prepared from dry type composite algorithm by nanometer binder, nanometer binder
Enter retort pouch internal layer membrane micropore, intermediate barrier layer micropore and outer membrane micropore in the way of nanometer is coupled and form root hair,
Adhesive layer is made closely to be integrally formed with each layer film, cohesive force is superpower, nanometer binder has blocked each layer film micropore simultaneously, makes
Obtain salt, acid, peppery, spice in packaging food, alcohol, water, sugar, sulfur, fatty acid, oils and fatss and albumen etc. cannot permeate, to reach
To purpose that is fresh-keeping and extending the shelf life.
Brief description
Fig. 1 is that the three-decker nano composite membrane partial enlargement of nanometer of the present invention impermeable retort pouch preferred embodiment is illustrated
Figure；
Fig. 2 is that the double-layer structure nano composite membrane partial enlargement of nanometer of the present invention impermeable retort pouch preferred embodiment is illustrated
Figure.
In figure：1. internal layer membrane, 2. internal layer membrane micropore, 3. adhesive layer, 4. root hair, 5. intermediate barrier layer, 6. middle resistance
Interlayer micropore, 7. outer membrane, 8. outer membrane micropore.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but illustrated embodiment is not as to this
Bright restriction：
The impermeable retort pouch of nanometer of the present invention, is made by nano composite membrane, nano composite membrane is included by nanometer
Internal layer membrane 1 and outer membrane 7 that binding agent is sequentially connected, nanometer binder penetrates into the internal layer membrane in internal layer membrane 1
Form root hair 4 in micropore 2, in the outer membrane micropore 8 that nanometer binder penetrates in outer membrane 7, also form root hair 4, and
Form adhesive layer 3 between the root hair 4 in the root hair 4 and outer membrane 7 in internal layer membrane 1, as shown in Figure 1.
Additionally, in order to improve impermeable ability further, being additionally provided between described internal layer membrane 1 and outer membrane 7 and pass through
The intermediate barrier layer 5 that nanometer binder connects, nanometer binder penetrates into the intermediate barrier layer micropore 6 in intermediate barrier layer 5
Middle formation root hair 4, and form adhesive layer 3 between the root hair 4 in the root hair 4 and intermediate barrier layer 5 in internal layer membrane 1, middle
Also form adhesive layer 3 between the root hair 4 in root hair 4 and outer membrane 7 in barrier layer 5.Described internal layer membrane 1 and outer membrane
It is provided between 7 and some intermediate barrier layer 5 are connected with by nanometer binder.In the present embodiment, internal layer membrane 1 and outer membrane 7
Between be additionally provided with and one layer of intermediate barrier layer 5 be connected with by nanometer binder, as shown in Figure 2.
The material of described internal layer membrane 1 is polypropylene film CPP or density polyethylene film with high HDPE, intermediate barrier layer 5
Material be aluminium foil AL or polyvinylidene chloride film PVDC or polyvinyl alcohol film PVA, the material of outer membrane 7 is that nylon is thin
Film PA or mylar PET.
The present invention makes the nanometer binder of the impermeable retort pouch of nanometer, including following component：Nanometer couplant 3wt%～
7wt%, BPF epoxy resin 4wt%～10wt%, polyurethane binder 83wt%～93wt% without bisphenol-A.
Described polyurethane binder is the nontoxic binding agent without bisphenol-A containing main glue and firming agent.
Described polyurethane binder includes following component：Diethylene glycol 10wt%～17wt%, ethyl acetate 42wt%～48wt%,
Methyl diphenylene diisocyanate 3wt%～6wt%, 1.2 1 propylene glycol 2wt%～3wt%, M-phthalic acid 5.5wt%～6wt%,
Decanedioic acid 20wt%～37.5wt%.
Described nanometer couplant is CNT between 30nm～120nm for the granularity, nano silicon, nanometer two
Titanium oxide, nanometer Ag-SiO2One of or multiple combinations.
Specific embodiment is as follows：
Embodiment 1：
First, buying host is pp-6260, and firming agent is that the commercialization of i-3000 is green without the nontoxic binding agent of bisphenol-A
Color polyurethane binder, host and firming agent by specification formula mixed fermentation are formed green polyurethane binder；
Secondly, by the DPF0 epoxy resin of the nano silicon of 3wt% and 5wt%（Without bisphenol-A）Mixing, puts into ultrasonic
Vibrate 25 minutes in ripple vibrator, form epoxide resin nano；
Again, above-mentioned epoxide resin nano is mixed with green polyurethane binder of 92wt%, put in blender 65
Stir 1 hour at DEG C, vacuum defoamation；
Finally, supersonic vibration 30 minutes, stand 1 day, form nanometer binder.
By dry type composite algorithm, it is sequentially connected the internal layer membrane 1 for CPP for the material using above-mentioned nanometer binder, material is
The intermediate barrier layer 5 of aluminium foil AL and material are the outer membrane 7 of mylar PET, are positioned over ripening 2 at 60 DEG C in temperature control room
My god, nanometer binder penetrates into internal layer membrane micropore 2, intermediate barrier layer micropore 6 and outer membrane micropore 8 and forms adhesive layer 3
And root hair 4, obtain high strength bond power zero infiltration three-decker nano composite membrane as shown in Figure 1.
With three-decker nano composite membrane as raw material, it is fabricated to the impermeable retort pouch of nanometer of all size model.
Embodiment 2：
First, decanedioic acid 30wt% and diethylene glycol 13wt% are mixed, be heated up at 220 DEG C under nitrogen and amines catalyst
Ferment at constant temperature 25 hours, is subsequently adding 1.2 1 propylene glycol and M-phthalic acid 2.5wt%, ferment at constant temperature 15 hours at 200 DEG C；
By the material after fermentation in 0.5～0.8Mpa atmospheric pressure device, generate intermediate raw material polyurethane and waste water, useless alcohol；To generate
Raw material polyurethane add methyl diphenylene diisocyanate 4wt%, be slowly ramped to 80 DEG C after mixing, formed main glue；By acetic acid
Ethyl ester 45wt% adds main glue, is warming up to 70 DEG C, forms green polyurethane binder；
Secondly, by the DPF0 epoxy resin of the CNT of 3wt% and 6wt%（Without bisphenol-A）Mixing, puts into ultrasound wave and shakes
Vibrate 30 minutes in dynamic device, form epoxide resin nano；
Again, above-mentioned epoxide resin nano is mixed with green polyurethane binder of 91wt%, put in blender 60
Stir 1.2 hours at DEG C, vacuum defoamation；
Finally, supersonic vibration 50 minutes, stand 2 days, form nanometer binder.
By dry type composite algorithm, it is sequentially connected, using above-mentioned nanometer binder, the internal layer membrane 1 that material is CPP and material is
The outer membrane 7 of PA, is positioned in temperature control room ripening 2 days at 80 DEG C, and nanometer binder penetrates into internal layer membrane micropore 2 He
Outer membrane micropore 8 forms the root hair 4 of adhesive layer 3, obtains high strength bond power zero infiltration double-layer structure nanometer as shown in Figure 2
Composite membrane.
With double-layer structure nano composite membrane as raw material, it is fabricated to the impermeable retort pouch of nanometer of all size model.
From embodiment as can be seen that the present invention is fabricated to nanometer binder based on nano material, and utilize nanometer binder
It is fabricated to the impermeable retort pouch of nanometer, nanometer binder enters retort pouch internal layer membrane micropore, centre in the way of nanometer coupling
Barrier layer micropore and outer membrane micropore form root hair, so that adhesive layer is closely integrally formed with each layer film, cohesive force is superpower, with
When nanometer binder blocked each layer film micropore so that salt, acid, peppery, spice in packaging food, alcohol, water, sugar, sulfur,
Fatty acid, oils and fatss and albumen etc. cannot permeate, and to reach purpose that is fresh-keeping and extending the shelf life, be skillfully constructed, and structure is simple, solely
Tool novelty.
Claims (9)
1. a kind of impermeable retort pouch of nanometer, is made by nano composite membrane it is characterised in that nano composite membrane includes passing through
The internal layer membrane that nanometer binder is sequentially connected（1）And outer membrane（7）, nanometer binder penetrates into internal layer membrane（1）In
Internal layer membrane micropore（2）Middle formation root hair（4）, nanometer binder penetrates into outer membrane（7）In outer membrane micropore
（8）In also form root hair（4）, and in internal layer membrane（1）Interior root hair（4）With outer membrane（7）Interior root hair（4）Between formed
Adhesive layer（3）；Described nanometer binder includes following component：Nanometer couplant 3wt%～7wt%, the BPF epoxy without bisphenol-A
Resin 4wt%～10wt%, polyurethane binder 83wt%～93wt%；Described polyurethane binder is containing main glue and firming agent not
Nontoxic binding agent containing bisphenol-A；Described polyurethane binder includes following component：Diethylene glycol 10wt%～17wt%, acetic acid
Ethyl ester 42wt%～48wt%, methyl diphenylene diisocyanate 3wt%～6wt%, 1.2 1 propylene glycol 2wt%～3wt%, isophthalic two
Formic acid 5.5wt%～6wt%, decanedioic acid 20wt%～37.5wt%；Described nanometer couplant is granularity between 30nm～120nm
CNT, nano silicon, nano titanium oxide, nanometer Ag-SiO2One of or multiple combinations.
2. the impermeable retort pouch of nanometer according to claim 1 is it is characterised in that described internal layer membrane（1）With outer membrane
（7）Between be additionally provided with the intermediate barrier layer connecting by nanometer binder（5）, nanometer binder penetrates into intermediate barrier layer
（5）In intermediate barrier layer micropore（6）Middle formation root hair（4）, and in internal layer membrane（1）Interior root hair（4）With intermediate barrier layer
（5）Interior root hair（4）Between formed adhesive layer（3）, intermediate barrier layer（5）Interior root hair（4）With outer membrane（7）Interior root hair
（4）Between also form adhesive layer（3）.
3. the impermeable retort pouch of nanometer according to claim 2 is it is characterised in that described internal layer membrane（1）With outer membrane
（7）Between be provided with some intermediate barrier layer be connected with by nanometer binder（5）.
4. the impermeable retort pouch of nanometer according to claim 2 is it is characterised in that described internal layer membrane（1）Material be poly-
Polypropylene film CPP or density polyethylene film with high HDPE, intermediate barrier layer（5）Material be aluminium foil or polyvinylidene chloride film
PVDC or polyvinyl alcohol film PVA, outer membrane（7）Material be nylon film PA or mylar PET.
5. a kind of nanometer binder making the impermeable retort pouch of nanometer it is characterised in that described nanometer binder include as follows
Component：Nanometer couplant 3wt%～7wt%, BPF epoxy resin 4wt%～10wt%, polyurethane binder 83wt% without bisphenol-A
～93wt%, wherein said nanometer couplant is CNT between 30nm～120nm for the granularity, nano silicon, receive
Rice titanium dioxide, nanometer Ag-SiO2One of or multiple combinations.
6. nanometer binder according to claim 5 is it is characterised in that described polyurethane binder is containing main glue and solidification
The nontoxic binding agent without bisphenol-A of agent.
7. nanometer binder according to claim 5 is it is characterised in that described polyurethane binder includes following component：Two
Glycol 10wt%～17wt%, ethyl acetate 42wt%～48wt%, methyl diphenylene diisocyanate 3wt%～6wt%, 1.2 one the third
Glycol 2wt%～3wt%, M-phthalic acid 5.5wt%～6wt%, decanedioic acid 20wt%～37.5wt%.
8. a kind of manufacture method of nanometer binder is it is characterised in that comprise the steps：
1）Decanedioic acid and diethylene glycol are mixed by mass percent, is heated up at 180～240 DEG C of a certain temperature in nitrogen and amine
Ferment at constant temperature 20～30 hours under class catalyst, then add 1.2 1 propylene glycol and M-phthalic acid by weight percent,
Ferment at constant temperature 10～20 hours at 170～230 DEG C of a certain temperature；Material after fermentation is set in 0.5～0.8Mpa atmospheric pressure
In standby, generate intermediate raw material polyurethane and waste water, useless alcohol；The raw material polyurethane generating is added above-mentioned mass fraction diphenylmethyl
Alkane diisocyanate, is slowly ramped to 60～120 DEG C after mixing, form main glue；Above-mentioned mass fraction ethyl acetate is added master
Glue, is warming up to 70～110 DEG C, forms polyurethane binder；
2）By the epoxy resin mixing without bisphenol-A of the nanometer couplant of 3wt%～7wt% and 4wt%～10wt%, put into ultrasonic
Vibrate 20～40 minutes in ripple vibrator, form epoxide resin nano；Described nanometer couplant is granularity in 30nm～120nm
Between CNT, nano silicon, nano titanium oxide, nanometer Ag-SiO2One of or multiple combinations；
3）Epoxide resin nano is mixed with green polyurethane binder of 83wt%～93wt%, puts in blender 60～80
Stir 1～2 hour at DEG C, vacuum defoamation；
4）Supersonic vibration 30～60 minutes in ultrasonic vibrator, stand 1～2 day, form nanometer binder.
9. a kind of manufacture method of the impermeable retort pouch of nanometer is it is characterised in that nano composite membrane is made by dry type composite algorithm,
Nanometer binder is compound to internal layer membrane（1）, intermediate barrier layer（5）And outer membrane（7）Between after, need to be positioned over temperature control
In room at 40～80 DEG C ripening 1～3 day, formed root hair（4）And adhesive layer（3）；Described nanometer binder includes following component：
Nanometer couplant 3wt%～7wt%, without bisphenol-A BPF epoxy resin 4wt%～10wt%, polyurethane binder 83wt%～
93wt%；Described polyurethane binder is the nontoxic binding agent without bisphenol-A containing main glue and firming agent；Described polyurethane
Binding agent includes following component：Diethylene glycol 10wt%～17wt%, ethyl acetate 42wt%～48wt%, diphenylmethane diisocyanate
Ester 3wt%～6wt%, 1.2 1 propylene glycol 2wt%～3wt%, M-phthalic acid 5.5wt%～6wt%, decanedioic acid 20wt%～
37.5wt%, wherein said nanometer couplant is CNT between 30nm～120nm for the granularity, nano silicon, receive
Rice titanium dioxide, nanometer Ag-SiO2One of or multiple combinations.
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| CN104293275B (en) * | 2014-11-06 | 2017-07-28 | 漳州市华西彩印有限公司 | Uvioresistant digestion resistant adhesive and its preparation method and application |
| CN106079745A (en) * | 2016-07-29 | 2016-11-09 | 无锡市华泰医药包装有限公司 | Drug packaging aluminium foil |
| CN109613125A (en) * | 2019-01-22 | 2019-04-12 | 中国地质大学（北京） | It is a kind of for detecting the couplant of masonry historical relic ultrasonic property |
| CN110920199A (en) * | 2019-12-23 | 2020-03-27 | 桐城市万方纸塑包装有限公司 | Method for manufacturing 121 ℃ steaming bag capable of resisting food discoloration |
| CN112441321B (en) * | 2020-11-26 | 2023-03-03 | 江西捷美软包装有限公司 | Nano anti-seepage cooking bag and nano bonding structure thereof |
| CN113427839A (en) * | 2021-08-26 | 2021-09-24 | 金石(天津)科技发展有限公司 | Composite film bag and preparation method thereof |
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