CN102229269A - Transparent steaming and boiling-resistant film and its preparation method - Google Patents
Transparent steaming and boiling-resistant film and its preparation method Download PDFInfo
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Abstract
The invention provides a transparent steaming and boiling-resistant film. The transparent steaming and boiling-resistant film comprises a first polypropylene layer, a first adhesive resin layer and a polyamide layer which connect according to a successive order, wherein, the first adhesive resin layer is composed of adhesive resin and polypropylene, the polypropylene accounts for 20% to 30% of the first adhesive resin layer. The invention also provides a method for producing the transparent steaming and boiling-resistant film. Experiments show that the tensile force of the transparent steaming and boiling-resistant film with thickness of 75mum produced by the invention can reach 48(N/15mm)/52(N/15mm), the thermal sealing strength before boiling is 35 (N/15mm), the thermal sealing strength after boiling is 28 (N/15mm), and the stripping phenomenon of the polypropylene layer and the polyamide layer can not occur before or after boiling, the transit quantity of water vapor is not higher than 2.75, the transit quantity of oxygen is not higher than 21.48, a PA/RCPP composite film with thickness of 85 mum prepared by using a dry type composite method has comparable performance.
Description
Technical field
The invention belongs to field of packaging material, relate in particular to a kind of transparent film of anti-boiling the and preparation method thereof.
Background technology
Anti-retort pouch claims foods packed in carton containers again, Natick research institute by AUS succeeds in developing at first, be used for substituting edible tinplate can and glass canned food, characteristics such as in light weight owing to having, that volume is little, instant, normal temperature storage property are suitable with the tinplate can have obtained application widely.Anti-retort pouch generally sticks with glue agent by polyester, nylon, aluminium foil and extraordinary polyolefin etc. and makes composite membrane by the dry type combination process, then through slaking, cut, make anti-retort pouch.
Because after the food of anti-the boil in bag packaging, will be through 121 ℃～135 ℃, the high-temperature sterilization treatment of 30min～40min, therefore, film and the adhesive of making anti-retort pouch need meet the following conditions: have heat-resisting quantity, packing can not the layering bale broken behind the cooking disinfection; Have barrier, particularly hinder oxygen, make the content behind the cooking disinfection have the long shelf-life; Have heat sealability, composite portion and closure part can not be peeled off or the intensity reduction because of heat treatment.Existing retort packaging material mainly comprises aluminum-plastic composite membrane and the transparent composite membrane of anti-the boiling, wherein, it is good that aluminum-plastic composite membrane has a light-proofness, can prevent the fragrance loss, but, that aluminum-plastic composite membrane has is opaque, content is invisible, folding resistance is poor, can not carry out shortcomings such as microwave treatment, and therefore, the transparent composite membrane of anti-the boiling becomes main research object gradually.
Prior art discloses the multiple material that is used to prepare the transparent composite membrane of anti-the boiling, as polyester, nylon (PA), polyvinylidene chloride (PVDC), high density polyethylene (HDPE) (HDPE), polypropylene (PP), polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH) etc., wherein, though PVA, EVOH barrier property are good, boiling resistance can be relatively poor; The barrier property of PVDC and boiling resistance can be all better, but its health processing characteristics is relatively poor, can pollute content when being used for packaging material for food.PA is a kind of linearity, has thermoplastic polycondensation polyamide to have good mechanical performance, the transparency, oxygen resistance, digestion resistant performance and safe and sanitary performance, is one of important materials of the transparent boiling composite membrane of preparation.Yet, be distributed with the amide group of strong polarity on the PA molecular backbone, very easily suction causes the transparent composite membrane of anti-boiling performance to descend after the suction, therefore, PA polyolefin such as PP, PE common and that heat sealability is good, block-water performance is good are compound as the transparent composite membrane of anti-the boiling.Prior art adopts the adhesive of anti-the boiling with PA and the bonding preparation of the polyolefin composite membrane of anti-the boiling usually, and not only operation is loaded down with trivial details, and is prone to the situation of boiling layering, bale broken in digestion process, influences the quality of content.
Multi-layer co-extruded is to adopt a plurality of heads to extrude various kinds of resin, arrives coextrusion behind the head, obtains having sandwich construction, the film of better performances.The inventor considers, PA and PP are made the PA/PP film by coextrusion, can need not to use the adhesive of anti-the boiling, and can save compound working procedure.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of transparent film of anti-boiling the and preparation method thereof, and the film of anti-boiling the provided by the invention has the good transparency, barrier property and boiling resistance energy.
The invention provides a kind of transparent film of anti-the boiling, comprise contacted successively first polypropylene layer, first bonding resin layer and aramid layer, wherein, described first bonding resin layer is formed by binder resin and polypropylene, and the mass percent of described polypropylene in described first bonding resin layer is 20%～30%.
Preferably, described binder resin is the polypropylene-base binder resin.
Preferably, described first polypropylene layer is formed by atactic copolymerized polypropene.
Preferably, in the described atactic copolymerized polypropene, the mass percent of ethene segment is 1.5%～7%.
Preferably, described aramid layer comprises contacted successively first aramid layer, intermediate layer and second aramid layer.
Preferably, described intermediate layer is formed by binder resin.
Preferably, comprise also and contacted second bonding resin layer of described aramid layer that described second bonding resin layer is formed by binder resin and polypropylene, the mass percent of described polypropylene in described second bonding resin layer is 20%～30%.
Preferably, also comprise and contacted second polypropylene layer of described second bonding resin layer.
Preferably, described second polypropylene layer is formed by atactic copolymerized polypropene.
The present invention also provides a kind of preparation method of the transparent film of anti-the boiling, may further comprise the steps:
With polypropylene, binder resin and polyamide co-extrusion modling, obtain comprising the tempreature bulb of contacted successively first polypropylene layer, first bonding resin layer and aramid layer, described first bonding resin layer is formed by binder resin and polypropylene, and described polyacrylic mass percent is 20%～30%;
With described tempreature bulb blowing film forming, cooling and shaping;
The outer layer surface of the film behind the described cooling and shaping is carried out sided corona treatment, obtain the transparent film of anti-the boiling.
Compared with prior art, the transparent film of anti-boiling the provided by the invention comprises contacted successively first polypropylene layer, first bonding resin layer and aramid layer, wherein, described first bonding resin layer is formed by binder resin and polypropylene, and the mass percent of described polypropylene in described first bonding resin layer is 20%～30%.In the film of anti-boiling the provided by the invention, first bonding resin layer is formed by binder resin and polypropylene, binder resin is generally anhydride modified polyolefin, all has good compatibility with polypropylene and polyamide, can play coupling jointly with polypropylene, improve the boiling resistance energy of the film of anti-the boiling.
Experiment shows, the pull-off force of the transparent film of anti-boiling that 75 μ m of the present invention's preparation are thick can reach 48 (N/15mm)/52 (N/15mm), elongation at break can reach 203%/218%, heat sealing strength before the boiling reaches 35 (N/15mm), heat sealing strength after the boiling reaches 28 (N/15mm), all can peeling off phenomenon before and after its polypropylene layer and the aramid layer boiling, steam penetrating capacity is not higher than 2.75, the oxygen transit dose is not higher than 21.48, and the PA/RCPP composite membrane thick with the 85 μ m that adopt the preparation of dry type composite algorithm has suitable performance.
Description of drawings
Fig. 1 is the structural representation of the transparent film of anti-boiling the provided by the invention.
The specific embodiment
The invention provides a kind of transparent film of anti-the boiling, comprise contacted successively first polypropylene layer, first bonding resin layer and aramid layer, wherein, described first bonding resin layer is formed by binder resin and polypropylene, and the mass percent of described polypropylene in described first bonding resin layer is 20%～30%.
The present invention is provided with bonding resin layer between polypropylene layer and aramid layer, by the compatibility between binder resin and polypropylene RPP layer and the aramid layer, make the transparent film of anti-boiling that obtains have the good transparency, barrier property and boiling resistance energy.
In the present invention, described first polypropylene layer is a hot sealing layer, and (PP) forms by polypropylene.Described polypropylene is preferably atactic copolymerized polypropene, random ethylene propylene copolymer more preferably, and in described random ethylene propylene copolymer, the mass percent of described ethene segment is preferably 1.5%～7%, and more preferably 3%～5%.The thickness of described first polypropylene layer is preferably 10 μ m～30 μ m, more preferably 15 μ m～25 μ m.
In the present invention, described aramid layer is a barrier layer, is formed by polyamide (PA), and described polyamide is preferably nylon 6/66 (PA6/66), i.e. the copolymer of nylon 6 and nylon 66.The thickness of described aramid layer is preferably 15 μ m～35 μ m, more preferably 20 μ m～30 μ m.For the ease of processing, described aramid layer preferably includes contacted successively first aramid layer, intermediate layer and second aramid layer.First aramid layer and second aramid layer form by polyamide, mainly take blocking effect, the intermediate layer can be formed by polyamide, also can be formed by the blending resin that comprises polyamide, can also be by other resins good, as formation such as binder resins with the polyamide compatibility.The thickness of described first aramid layer is preferably 5 μ m～15 μ m, more preferably 10 μ m～12 μ m; The thickness in described intermediate layer is preferably 3 μ m～10 μ m, more preferably 5 μ m～8 μ m; The thickness of described second aramid layer is preferably 5 μ m～15 μ m, more preferably 10 μ m～12 μ m.
Because polypropylene and polyamide compatibility are relatively poor, the present invention is provided with first bonding resin layer between described first polypropylene layer and described aramid layer, and described first bonding resin layer is formed by binder resin and polypropylene.
In the present invention, binder resin is the resin with bond properties, and du pont company is referred to as TIE, and Mitsui company is referred to as ADMER.Binder resin is the polymer of a class graft modification, and being grafted on the main chain of polymer the formation official by comonomer can side chain, this sense side chain can with bonded material generation chemical reaction, thereby resin or base material that will mutually can not be bonding be bonded together.In the present invention, described binder resin is preferably the polypropylene-base binder resin.
Though binder resin can be bonded together first polypropylene layer and aramid layer, the boiling resistance of the film of anti-boiling that simple use binder resin obtains can be relatively poor, serious wrinkling can occur after the boiling.The present invention improves the boiling resistance energy of the boiling film that obtains with polypropylene and binder resin blend.In described first bonding resin layer, described polyacrylic content has material impact to the performance of the film of anti-boiling that obtains, and the present invention is controlled to be 20%～30% with described polyacrylic mass percent, is preferably 22%～28%.When polypropylene content was lower than above-mentioned scope, the film of anti-boiling that obtains serious wrinkling can occur after boiling; When polypropylene content was higher than above-mentioned scope, the film of anti-boiling that obtains lamination can occur after boiling.
In described first bonding resin layer, described polypropylene is identical with the polypropylene that described first polypropylene layer adopts.
The thickness of described first bonding resin layer is preferably 3 μ m～8 μ m, more preferably 4 μ m～7 μ m.
In order to make the described transparent film of anti-the boiling have the better processability energy, phenomenons such as crimping do not take place, the present invention preferably also comprises and contacted second bonding resin layer of described aramid layer, promptly, first bonding resin layer and second bonding resin layer contact with two sides of aramid layer respectively, form the sandwich structure of first bonding resin layer/aramid layer/second bonding resin layer.
Described second bonding resin layer is formed by binder resin and polypropylene, and described polyacrylic mass percent is 20%～30%, and more preferably 22%～28%.Described binder resin is preferably the polypropylene-base binder resin.The thickness of described second bonding resin layer is preferably 3 μ m～8 μ m, more preferably 4 μ m～7 μ m.
In the transparent film of anti-boiling the provided by the invention, preferably also comprise and contacted second polypropylene layer of described second bonding resin layer, promptly, the aramid layer and second polypropylene layer contact with two sides of described second bonding resin layer respectively, form the sandwich structure of aramid layer/second bonding resin layer/second polypropylene layer.
Described second polypropylene layer comprises polypropylene, described polypropylene is preferably atactic copolymerized polypropene, and random ethylene propylene copolymer more preferably is in described random ethylene propylene copolymer, the mass percent of described ethene segment is preferably 1.5%～7%, and more preferably 3%～5%.
In order to improve the combination property of the described transparent film of anti-the boiling, also comprise auxiliary agent in described second polypropylene layer, the content of described auxiliary agent is preferably 0.5wt%～5wt%, more preferably 1wt%～3wt%.Described auxiliary agent preferably includes opening agent (AB) and slipping agent (SL), and the mass ratio of described opening agent and described slipping agent is preferably 1: 1.
The thickness of described second polypropylene layer is preferably 10 μ m～30 μ m, more preferably 15 μ m～25 μ m.
Referring to Fig. 1, Fig. 1 is the structural representation of the transparent film of anti-boiling the provided by the invention, and wherein, 11 is first polypropylene layer, 12 is first bonding resin layer, and 13 is first aramid layer, and 14 is second aramid layer, 15 is the 3rd aramid layer, and 16 is second bonding resin layer, and 17 is second polypropylene layer.
The edge-curl phenomenon that produces in the process, the thickness of first polypropylene layer 11 and second polypropylene layer 17 is basic identical, the constituent and the thickness of first bonding resin layer 12 and second bonding resin layer 16 are basic identical, the constituent and the thickness of first aramid layer 13 and the 3rd aramid layer 15 are basic identical, the structure comparatively film of symmetry is processed easily, phenomenons such as crimping can not occur.
The present invention also provides a kind of preparation method of the transparent film of anti-the boiling, may further comprise the steps:
With polypropylene, binder resin and polyamide co-extrusion modling, obtain comprising the tempreature bulb of contacted successively first polypropylene layer, first bonding resin layer and aramid layer, described first bonding resin layer is formed by binder resin and polypropylene, and described polyacrylic mass percent is 20%～30%;
With described tempreature bulb blowing film forming, cooling and shaping;
The outer layer surface of the film behind the described cooling and shaping is carried out sided corona treatment, obtain the transparent film of anti-the boiling.
The present invention adopts coextrusion blow technology to prepare the transparent film of anti-the boiling, has save compound step, and production process is comparatively simple.
At first will form the material resin of first polypropylene layer, first bonding resin layer and aramid layer, being that polypropylene, binder resin and polyamide are moving carries out co-extrusion modling as screw extruder, obtains comprising the tempreature bulb of contacted successively first polypropylene layer, first bonding resin layer and aramid layer.The present invention does not have particular restriction to described screw extruder, and those skilled in the art can carry out the adjustment of coextrusion parameter according to the performance of employed screw extruder model and the target film of anti-the boiling.
Described tempreature bulb is carried out blowing film forming well known to those skilled in the art, cooling and shaping.In order to make the film that obtains have good mechanical performance and barrier property, when carrying out blowing, blow-up ratio is preferably 1.5～3, and more preferably 2～2.5.Those skilled in the art can carry out the adjustment of blowing parameter according to the blow moulding equipment model of using and the performance of the target film of anti-the boiling.
After blowing obtains film, the outer layer surface of described film is carried out sided corona treatment, improve the tack of the film of anti-the boiling.Those skilled in the art can carry out the adjustment of sided corona treatment parameter according to the corona unit type of using and the performance of the target film of anti-the boiling.
In order to improve the processing characteristics of the described film of anti-the boiling, the described transparent film of anti-the boiling is the film with first polypropylene layer, 11/ first bonding resin layer, 12/ first aramid layer, 13/ second aramid layer 14/ the 3rd aramid layer, 15/ second bonding resin layer, 16/ second polypropylene layer, 17 structures.The present invention adopts the seven-layer co-extrusion blow molding process to carry out the preparation that this does not have, and directly obtains having the film of anti-boiling of 7 layers of structure.
Seven-layer co-extrusion blow molding process and above-mentioned coextrusion blow technology are similar, and in order to obtain well behaved heat-sealing film, those skilled in the art can adjust coextrusion parameter, blowing parameter and corona parameter.
After obtaining the transparent film of anti-the boiling, it is carried out performance test, experiment shows, the pull-off force of the transparent film of anti-boiling that 75 μ m of the present invention's preparation are thick can reach 48 (N/15mm)/52 (N/15mm), elongation at break can reach 203%/218%, heat sealing strength before the boiling reaches 35 (N/15mm), heat sealing strength after the boiling reaches 28 (N/15mm), all can peeling off phenomenon before and after its polypropylene layer and the aramid layer boiling, steam penetrating capacity is not higher than 2.75, the oxygen transit dose is not higher than 21.48, and the PA/RCPP composite membrane thick with the 85 μ m that adopt the preparation of dry type composite algorithm has suitable performance.In addition, the transparent film of anti-boiling the provided by the invention has higher elongation at break, drawing and forming once more.
In order to further specify the present invention, transparent film of anti-boiling the provided by the invention and preparation method thereof is described in detail below in conjunction with embodiment.
Below among each embodiment raw materials used being from the market buy, wherein, copolymerization PP is available from Borealis, the trade mark is RB707CF; Binder resin is available from A Kema, and the trade mark is 18720; PA is available from BASF, and the trade mark is C40L01; AB is available from French Bao Lide, and the trade mark is ABPP10S; SL is available from the superior look in Jiangyin, and the trade mark is SE07PP.
Below among each embodiment the used test instrument be: the model that Shanghai tools factory produces is the calibrator of CH-1-S; The model that mark border, Guangzhou Coating Equipment Co., Ltd produces is the heat-sealing instrument of GBB-B; Labthink Instruments Co., Ltd. produces, model is the puller system of XLW; The model that mark border, Guangzhou Coating Equipment Co., Ltd produces is the digester of ZM-100; The model that U.S. MOCON company produces is 3/61 saturating wet instrument; The model that U.S. MOCON company produces is 702 oxygen flow instrument.
Embodiment 1
With German W﹠amp; H company produces, model is that blow moulding equipment carries out the preparation of heat-sealing film on the seven-layer co-extrusion of VAREX:
Blow on described seven-layer co-extrusion in seven barrels of equipment and add the first polypropylene layer raw material (being designated as Y1), the first bonding resin layer raw material (being designated as Y2), the first aramid layer raw material (being designated as Y3), the second aramid layer raw material (being designated as Y4), the 3rd aramid layer raw material (being designated as Y5), the second bonding resin layer raw material (being designated as Y6) and the second polypropylene layer raw material (being designated as Y7) respectively, the concrete prescription of each raw material sees Table 1.
The raw materials used prescription of transparent each layer of the film of anti-boiling of table 1 embodiment 1 preparation
Raw material in 7 barrels is carried out carrying out blowing after the coextrusion, and blow-up ratio is 2.2, and controls each layer thickness, and each layer thickness sees Table 1.
After blowing obtains film, the outer layer surface of described film is carried out sided corona treatment, obtaining thickness is the transparent film of anti-boiling of 75 μ m.
Embodiment 2～6
The method and apparatus that provides according to embodiment 1 prepares the thick film of anti-boiling of 75 μ m, and difference is that the concrete prescription of each raw material sees Table 2.
The raw materials used prescription of each layer of the film of anti-boiling of table 2 embodiment 2～6 preparations
Embodiment 7
The film of anti-boiling that embodiment 1～6 is prepared carries out performance test, and the result is referring to table 3, the The performance test results before the film of anti-boiling boiling that table 3 provides for the embodiment of the invention.
The performance test results before the film of anti-boiling boiling that table 3 embodiment of the invention provides
As shown in Table 3, when first bonding resin layer and second bonding resin layer were formed by binder resin and copolymerization PP, mechanical properties in films, barrier property and film appearance were all better; When containing PA in first bonding resin layer and second bonding resin layer, though mechanical properties in films and barrier property are also better,, film appearance is relatively poor, and a large amount of ripples lines are arranged, even a large amount of brilliant points occur, can not be used for transparent wrapper.This shows, when first bonding resin layer is formed by binder resin and polypropylene, can obtain transparent membrane.
Embodiment 8
The transparent film of anti-boiling the to embodiment 1～3 preparation carries out the boiling experiment, and the result is referring to table 4, and table 4 be the The performance test results after the transparent film of anti-boiling boiling for preparing of the embodiment of the invention and comparative example.
Comparative example 1
Produce with Beijing Gao Meng, the trade mark is that 8160 polyurethane adhesive is an adhesive, the RCPP that PA that 25 μ m are thick and 60 μ m are thick is compound by the dry type composite algorithm, obtains the compound film of anti-boiling of 25 μ mPA/60 μ mRCPP.
The described compound film of anti-the boiling is carried out boiling experiment, and the result is referring to table 4, and table 4 be the The performance test results after the film of anti-boiling boiling for preparing of the embodiment of the invention and comparative example.
The performance test results after the film of anti-boiling boiling of table 4 embodiment of the invention and comparative example preparation
In the table 4, the detection method of broken rate is as follows: the described transparent film of anti-the boiling is made 100 anti-retort pouch, in 121 ℃ of following boiling 30min, observe each anti-retort pouch and layering, situation such as wrinkling whether occur.
As shown in Table 4, when first bonding resin layer is all formed by binder resin, serious wrinkling appears after the film of anti-boiling boiling that obtains; When first bonding resin layer is formed by the polypropylene of 50% binder resin and 50%, after the film of anti-boiling boiling that obtains lamination appears; When first bonding resin layer was formed by the polypropylene of 75% binder resin and 25%, phenomenons such as wrinkling, layering can not appear after the film of anti-boiling boiling that obtains.
In addition, as shown in Table 4, the transparent film of anti-boiling that the embodiment of the invention 1 provides has suitable mechanical property, barrier property and the transparency with the compound film of anti-boiling of 25 μ mPA/60 μ mRCPP, but its thinner thickness can replace PA/RCPP to use.
Embodiment 9
The method and apparatus that provides according to embodiment 1 prepares the thick film of anti-boiling of 75 μ m, and difference is, first bonding resin layer and second bonding resin layer form by 80% binder resin and 20% copolymerization PP, obtain good, the transparent film of anti-boiling of outward appearance.
The described transparent film of anti-the boiling is carried out boiling experiment, and the result is referring to table 5, and table 5 be the The performance test results after the transparent film of anti-boiling boiling for preparing of the embodiment of the invention 9～10.
Embodiment 10
The method and apparatus that provides according to embodiment 1 prepares the thick film of anti-boiling of 75 μ m, and difference is, first bonding resin layer and second bonding resin layer form by 70% binder resin and 30% copolymerization PP, obtain good, the transparent film of anti-boiling of outward appearance.
The described transparent film of anti-the boiling is carried out boiling experiment, and the result is referring to table 5, and table 5 be the The performance test results after the transparent film of anti-boiling boiling for preparing of the embodiment of the invention 9～10.
The performance test results after the transparent film of anti-boiling boiling of table 5 embodiment of the invention 9～10 preparations
As shown in Table 5, when bonding resin layer is formed by binder resin and copolymerization PP, and copolymerization PP mass percent is between 20%～30% the time, can access the transparent film of anti-the boiling, and the barrier property of this film and mechanical property are all better.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. transparent film of anti-the boiling, comprise contacted successively first polypropylene layer, first bonding resin layer and aramid layer, wherein, described first bonding resin layer is formed by binder resin and polypropylene, and the mass percent of described polypropylene in described first bonding resin layer is 20%～30%.
2. the transparent film of anti-boiling the according to claim 1 is characterized in that, described binder resin is the polypropylene-base binder resin.
3. the transparent film of anti-boiling the according to claim 1 is characterized in that, described first polypropylene layer is formed by atactic copolymerized polypropene.
4. the transparent film of anti-boiling the according to claim 3 is characterized in that, in the described atactic copolymerized polypropene, the mass percent of ethene segment is 1.5%～7%.
5. the transparent film of anti-boiling the according to claim 1 is characterized in that, described aramid layer comprises contacted successively first aramid layer, intermediate layer and second aramid layer.
6. the transparent film of anti-boiling the according to claim 5 is characterized in that described intermediate layer is formed by binder resin.
7. the transparent film of anti-boiling the according to claim 1, it is characterized in that, also comprise and contacted second bonding resin layer of described aramid layer, described second bonding resin layer is formed by binder resin and polypropylene, and the mass percent of described polypropylene in described second bonding resin layer is 20%～30%.
8. the transparent film of anti-boiling the according to claim 7 is characterized in that, also comprises and contacted second polypropylene layer of described second bonding resin layer.
9. the transparent film of anti-boiling the according to claim 8 is characterized in that, described second polypropylene layer is formed by atactic copolymerized polypropene.
10. the preparation method of the transparent film of anti-the boiling may further comprise the steps:
With polypropylene, binder resin and polyamide co-extrusion modling, obtain comprising the tempreature bulb of contacted successively first polypropylene layer, first bonding resin layer and aramid layer, described first bonding resin layer is formed by binder resin and polypropylene, and described polyacrylic mass percent is 20%～30%;
With described tempreature bulb blowing film forming, cooling and shaping;
The outer layer surface of the film behind the described cooling and shaping is carried out sided corona treatment, obtain the transparent film of anti-the boiling.
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| CN103192570A (en) * | 2013-04-19 | 2013-07-10 | 黄山永新股份有限公司 | High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof |
| CN104118643A (en) * | 2014-06-26 | 2014-10-29 | 苏州市盛百威包装设备有限公司 | Preparation method of anti-stripping packing material |
| CN108673989A (en) * | 2018-05-21 | 2018-10-19 | 黄山永新股份有限公司 | A kind of high-barrier transparency film and its production method suitable for High-Speed Automatic packaging |
| CN108790004A (en) * | 2018-05-28 | 2018-11-13 | 永新股份（黄山）包装有限公司 | A kind of resistance to boiling suction nozzle and its production method |
| CN109177412A (en) * | 2018-03-16 | 2019-01-11 | 中塑新材料科技（杭州）有限公司 | A kind of multi-layer co-extruded digestion resistant high-resistant diaphragm |
| CN111590988A (en) * | 2020-05-07 | 2020-08-28 | 合肥佛斯德新材料科技有限公司 | Processing method of NY/RCPP composite film for high-temperature steaming bag |
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| CN103192570A (en) * | 2013-04-19 | 2013-07-10 | 黄山永新股份有限公司 | High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof |
| CN103192570B (en) * | 2013-04-19 | 2015-04-15 | 黄山永新股份有限公司 | High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof |
| CN104118643A (en) * | 2014-06-26 | 2014-10-29 | 苏州市盛百威包装设备有限公司 | Preparation method of anti-stripping packing material |
| CN104118643B (en) * | 2014-06-26 | 2016-08-24 | 江西春光药品包装材料股份有限公司 | A kind of preparation method of the packaging material of antistripping |
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| CN111590988A (en) * | 2020-05-07 | 2020-08-28 | 合肥佛斯德新材料科技有限公司 | Processing method of NY/RCPP composite film for high-temperature steaming bag |
| CN111590988B (en) * | 2020-05-07 | 2022-04-01 | 合肥佛斯德新材料科技有限公司 | Processing method of NY/RCPP composite film for high-temperature steaming bag |
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