CN110436050A - A kind of Easy tearing lid - Google Patents
A kind of Easy tearing lid Download PDFInfo
- Publication number
- CN110436050A CN110436050A CN201910802244.4A CN201910802244A CN110436050A CN 110436050 A CN110436050 A CN 110436050A CN 201910802244 A CN201910802244 A CN 201910802244A CN 110436050 A CN110436050 A CN 110436050A
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- China
- Prior art keywords
- easily tore
- tore film
- annular ring
- film
- easy tearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 150000001875 compounds Chemical group 0.000 claims abstract description 20
- 230000004888 barrier function Effects 0.000 claims abstract description 17
- 210000003684 theca cell Anatomy 0.000 claims abstract description 14
- 238000003854 Surface Print Methods 0.000 claims abstract description 11
- 229920001684 low density polyethylene Polymers 0.000 claims description 24
- 239000004702 low-density polyethylene Substances 0.000 claims description 24
- 239000004698 Polyethylene Substances 0.000 claims description 18
- 229920000573 polyethylene Polymers 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 12
- 229920001577 copolymer Polymers 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 10
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- -1 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 235000013305 food Nutrition 0.000 abstract description 11
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 52
- 238000001035 drying Methods 0.000 description 35
- 239000002131 composite material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000005215 recombination Methods 0.000 description 10
- 230000006798 recombination Effects 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000009835 boiling Methods 0.000 description 8
- 239000005030 aluminium foil Substances 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 239000008139 complexing agent Substances 0.000 description 5
- 239000008267 milk Substances 0.000 description 5
- 210000004080 milk Anatomy 0.000 description 5
- 235000013336 milk Nutrition 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006748 scratching Methods 0.000 description 3
- 230000002393 scratching effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000006353 environmental stress Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 210000004276 hyalin Anatomy 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 235000013324 preserved food Nutrition 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 235000020992 canned meat Nutrition 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Closures For Containers (AREA)
Abstract
The present invention relates to packaging fields, and in particular to a kind of Easy tearing lid, including annular ring cover, inner rim form the bound edge for being hidden inner edge to itself turnup；And the easily tore film for the opening being covered in annular ring, for closed ring ring cover that is sticked, easily tore film is compound structure film, easily tore film includes surface printing layer, barrier layer and the theca interna set gradually, printing layer in surface is pet layer, and barrier layer is high-barrier pet layer, and theca interna is PE layers.By the way that Easy tearing lid is set as including annular ring cover and easily tore film, and easily tore film is to be sticked to cover in annular ring, when article to be taken, easily tore film need to only be torn along the location for paste of easily tore film and annular ring cover, it is simple to operate, and the case where food in tank can be avoided pollution generation, and since the inner edge of annular ring cover also turnup is formed with bound edge, the case where so as to further prevent finger to be scratched by the inner edge of the higher annular ring cover of mechanical strength.
Description
Technical field
The present invention relates to food packaging applications, and in particular to a kind of Easy tearing lid.
Background technique
" bread is the staff of life, eats with An Weixian ", food safety affects everyone daily life and health, and milk pot is
It is generally used for containing the pot type packaging of milk powder, traditional milk pot packaging, in order to guarantee the safety and sanitation of food in tank, it will usually
The lid of embedded aluminium foil, annular iron ring and iron outer cover three parts composition is provided on tank body, wherein annular iron ring and tank
The opening that closed ring iron ring is used on annular iron ring is arranged in body by integral forming, embedded aluminium foil, and irony outer cover can be with annular iron
Circle clamping is set with carrying out lid to tank body, in the intracorporal food of tank to be taken, it usually needs first pry open irony outer cover, then again
Aluminium foil is cut open with sharp thing and is removed, aluminium foil is cut open and has aluminium skimmings often and fall into milk powder and lead to that there are security risks, meanwhile, by
A part can be remained after aluminium foil is cut open at tank mouth edge, and scratching fingers are easy when taking milk powder to will lead to.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming the lid of aluminium foil preparation in the prior art when opening
It is easy to cause aluminium skimmings to fall into food, while the aluminium foil torn is easy the defect of scratching fingers, to provide a kind of Easy tearing lid.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of Easy tearing lid, comprising:
Annular ring cover, inner rim form the bound edge for being hidden inner edge to itself turnup；
And the easily tore film for the opening covered in annular ring, for closing annular ring lid that is sticked, it is described easy
Dyestripping is compound structure film, and the easily tore film includes surface printing layer, barrier layer and the theca interna set gradually, the table
Printing layer in face is polyethylene terephthalate (PET) layer, and the barrier layer is high-barrier pet layer, and the theca interna is poly-
Pvdf layer.
Further, annular ring, which covers, is bent to form for the easily tore film to be limited to annular ring lid
Step on predetermined position, the easily tore film are sticked on shorter one layer of the step surface of the step.
Further, integrally formed with knob on the easily tore film, the junction of the knob and easily tore film is formed with folding
Trace, the knob, which can turn down, to be superimposed on the easily tore film.
Further, the glue point for bonding the knob is additionally provided on the easily tore film.
Further, the luminous point for positioning the glue point is additionally provided on the easily tore film.
Further, non-slip texture is provided on the knob.
Further, it is also set up between the surface printing layer and the barrier layer, the barrier layer and the theca interna
There is adhesive phase.
Further, it is prepared by polythene material blending for described PE layers, according to the gross mass of the polythene material
Meter, the polythene material includes the raw material of following percentage composition:
Low density polyethylene (LDPE) 25wt%-30wt%
Linear low density polyethylene 25wt%-30wt%
Ethylene propylene copolymer 30wt%-35wt%
Antifoggant 5wt%-10wt%.
Technical solution of the present invention has the advantages that
1. Easy tearing lid provided by the invention by the way that Easy tearing lid to be set as including annular ring cover and easily tore film, and is easily torn
Film is to be sticked to cover in annular ring, when article to be taken, need to only be torn easily tore film along easily tore film and the location for paste of annular ring cover
It is lower, it is simple to operate, and generation the case where food in tank can be avoided pollution, in addition, since easily tore film includes successively
The pet layer of setting, high-barrier pet layer and PE layers, PET, high-barrier PET and PE are plastics, and rigidity is poor, so as to
To avoid generation the case where scratching fingers after opening, and since the inner edge of annular ring cover also turnup is formed with bound edge, so as to
The case where to further prevent finger to be scratched by the inner edge of the higher annular ring cover of mechanical strength.
2. Easy tearing lid provided by the invention, by covering setting loading end in annular ring, loading end is lower than annular ring cover
Ring cover capping, and easily tore film is sticked on loading end, and loading end is enabled to play position-limiting action to easily tore film, so that making
During standby Easy tearing lid, easily tore film can fast and accurately be sticked on the predetermined position of annular ring cover by operator, and one
Aspect makes preparation process convenient and efficient, on the other hand can guarantee the consistency of same batch products.
3. Easy tearing lid provided by the invention is shaken hands by being arranged on easily tore film, so that tearing easily tore film
When can be more convenient, by the way that easily tore film and knob setting are integrally formed, on the one hand to process more convenient fast
Victory, on the other hand can to avoid during removing easily tore film, due to easily tore film and knob be assembled to form and cause easily
The case where dyestripping is separated with knob, by the way that folding line is arranged in knob and the junction of easily tore film, so that knob can be along
Folding line fold is superimposed on easily tore film, so as to avoiding outer stick up of knob and making from not descend heart drawing to knob during transportation
The case where easily tore film is opened.
4. Easy tearing lid provided by the invention, by the way that glue point is arranged on Easy tearing lid, glue point will be for that will shake hands to be bonded in easily to tear
On film, certain fixed function is played to knob, so that again will knob and easily tore film when needing to tear easily tore film again
Separation can further avoid outer stick up of knob and making that heart drawing not descend to open easily tore film to knob during transportation
It happens.
5. Easy tearing lid provided by the invention, by the way that the luminous point of positioning glue point is arranged on easily tore film, so that producing
During Easy tearing lid, it can really be glued by spot alignment, thereby may be ensured that the consistency of same batch products.
6. Easy tearing lid provided by the invention, by the way that non-slip texture is arranged on knob, so as to increase finger and knob
Between frictional force when contacting so that easily tore film can more easily pull-up and be opened knob by consumer.
7. Easy tearing lid provided by the invention, low density polyethylene (LDPE) molding processibility is good；Linear low density polyethylene has good
Good environmental stress crack resistance, the performances such as impact resistant strength, tear-resistant intensity；Ethylene propylene copolymer has good heat-sealing
Property；Antifoggant, which is directed to film caused by the temperature difference and hazes, has good elimination to act on.The present invention is by selecting low density polyethylene (LDPE), line
Property low density polyethylene (LDPE), ethylene propylene copolymer and antifoggant, and suitable compatibility is set so that inner membrance have it is good plus
Work performance, good heat-sealing match and easily take off performance while also having both anti-fog effect, so that Easy tearing lid is readily applicable to
On the canned food for needing to carry out boiling, and after boiling, the fog that water evaporation generates will not be adsorbed on film inner surface or layer
Between, so as to be still able to maintain appearance clear for the easily tore film after boiling.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the partial sectional view of the Easy tearing lid in the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the easily tore film in the embodiment of the present invention 1.
Appended drawing reference:
1, annular ring cover；2, easily tore film；21, surface printing layer；22, barrier layer；23, theca interna；24, adhesive phase；3,
Glue point；4, luminous point.
Specific embodiment
There is provided following embodiments is to preferably further understand the present invention, it is not limited to the best embodiment party
Formula is not construed as limiting the contents of the present invention and protection scope, anyone under the inspiration of the present invention or by the present invention and its
The feature of his prior art is combined and any and identical or similar product of the present invention for obtaining, all falls within of the invention
Within protection scope.
Specific experiment step or condition person are not specified in embodiment, according to the literature in the art described routine experiment
The operation of step or condition can carry out.Reagents or instruments used without specified manufacturer, being can be by commercially available acquisition
Conventional reagent product.
Embodiment 1
As shown in Figs. 1-2, the present embodiment is related to a kind of Easy tearing lid, including annular ring cover 1 and easily tore film 2.
Easily tore film 2 is sticked in annular ring cover 1, and easily tore film 2 is used for the opening of closed ring ring cover 1, to enhance easily tore film 2
Performance, easily tore film 2 select compound structure film, easily tore film 2 include set gradually surface printing layer 21, barrier layer 22 and
Theca interna 23, wherein surface printing layer 21 is pet layer, and barrier layer 22 is high-barrier pet layer, and theca interna 23 is polyethylene layer.In
In the present embodiment, it is compound to be all made of bonding mode between surface printing layer 21 and barrier layer 22, barrier layer 22 and theca interna 23,
Therefore adhesive phase 24, adhesive phase are also formed between surface printing layer 21 and barrier layer 22, barrier layer 22 and theca interna 23
24 form for polyurethane adhesive.To enable consumers to the more intuitive state for observing food in tank body, in this reality
It applies in example, easily tore film 2 is set as hyaline membrane.
With economic development, as canned fish, canned meat, canned vegetables, tinned fruit etc. need to be canned through high temperature sterilization technique
Food it is also more and more, usually after thermophilic digestion, the moisture in food can evaporate to form vapor and be adsorbed on and easily tear
The surface of film 2 and block vision, the present embodiment is to prevent water vapor adsorption on 2 surface of easily tore film and block vision, by easily tore film 2
Theca interna 23 be set as by polythene material be blended be prepared, wherein in terms of the gross mass of polythene material, polyethylene material
Material includes the raw material of following percentage composition: low density polyethylene (LDPE) 25wt%-30wt%, linear low density polyethylene 25wt%-
30wt%, ethylene propylene copolymer 30wt%-35wt%, antifoggant 5wt%-10wt%.
Wherein, low density polyethylene (LDPE) molding processibility is good；There is linear low density polyethylene good environmental stress resistance to open
Fragility, the performances such as impact resistant strength, tear-resistant intensity；Ethylene propylene copolymer has good heat sealability；Antifoggant is for temperature
Film caused by difference, which hazes, has good elimination to act on.The present embodiment is by selecting low density polyethylene (LDPE), linear low density polyethylene
Alkene, ethylene propylene copolymer and antifoggant, and suitable compatibility is set, so that inner membrance has good processing performance, good
Heat-sealing matching and easily take off performance while also having both anti-fog effect so that Easy tearing lid is readily applicable to be steamed
On the canned food boiled, and after boiling, the fog that water evaporation generates will not be adsorbed on film inner surface or interlayer, so that through steaming
It is clear that easily tore film 2 after boiling still is able to maintain appearance.
Easily tore film 2 in the present embodiment can be directly commercially available or be prepared according to the following steps:
S1: according to the property of required blend film, weighing corresponding material, and blown film is blended and prepares PE layers；
S2: carrying out compound, recombination velocity≤200m/min for pet layer and high-barrier pet layer on dry type complexing agent, and one section
Drying tunnel temperature is 50-65 DEG C, and two sections of drying tunnel temperatures are 65-85 DEG C, and three sections of drying tunnel temperatures are 75-90 DEG C, and hot drum temperature is 50-65
℃；
S3: PE layer that S1 is prepared carried out with the obtained composite film of S2 on dry compound machine it is further compound,
Recombination velocity≤200m/min, one section of drying tunnel drying temperature are 50-65 DEG C, and two sections of drying tunnel temperatures are 65-85 DEG C, three sections of drying tunnel temperature
Degree is 75-90 DEG C, and hot drum temperature is 50-65 DEG C；
S4: the composite membrane that S3 is prepared is placed in curing chamber and cures, and curing temperature is 50-60 DEG C, when curing
Between >=96h.
For the safety for enhancing Easy tearing lid, the inner edge of annular ring cover 1 is set as carrying out inner edge to be formed to itself turnup
Hiding bound edge, in this way, the inner edge for enabling annular ring cover 1 sharp is hidden, so as to avoid consumer from taking
With the case where finger is hurt when food in tank.
To guarantee that the easily tore film 2 of same batch production can be sticked on the predetermined position of annular ring cover 1, in the present embodiment
In, plane locating for easily tore film 2 is set below to the ring cover capping of annular ring cover 1, the preferably close bound edge in annular ring cover 1
Position form loading end, loading end is for supporting easily tore film 2.Specifically, step, easily tore film 2 can be arranged in annular ring cover 1
It is sticked on shorter one layer of the step surface of step, the edge of easily tore film 2 is abutted with the side of step.By the setting of step,
Easily tore film 2 is limited on the predetermined position of annular ring cover 1, so that more convenient efficiently can will in process
Easily tore film 2 is positioned.
Easily tore film 2 is torn from annular ring cover 1 for convenience of consumer, knob is additionally provided on easily tore film 2 (in figure not
Show), for convenience of processing and fabricating, knob is integrally formed with the setting of easily tore film 2, and in this way, can be to avoid easily tearing tearing
The case where knob is separated with easily tore film 2 during film 2.Wherein, to prevent knob is outer from sticking up, in knob and easily tore film 2
Junction be additionally provided with folding line, knob can be turned down along folding line and is superimposed on easily tore film 2, can be stuck up in this way to avoid knob is outer, and
So that accidentally being pulled during transportation to and by easily tore film 2 the case where tearing.In addition, existing to further avoid knob
It is accidentally pulled in transportational process in the present embodiment, being additionally provided with glue point 3 on easily tore film 2, glue point 3 is for will easily tear
Film 2 is bonded with knob, in this way, can make during transportation, knob can closely be sticked on easily tore film 2,
To further prevent knob is outer to stick up, opened from easily tore film 2 when needing to open easily tore film 2, then by knob.Wherein,
To enable the gluing of glue point 3 accurate, luminous point 4 is additionally provided on easily tore film 2, luminous point 4 is for positioning glue point 3.
To enable consumers to more easily open easily tore film 2, in the present embodiment, it is additionally provided on knob
Non-slip texture, the setting of non-slip texture can increase frictional force when contacting between finger and knob, exist to save consumer
The power that easily tore film 2 is applied when opening easily tore film 2.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Embodiment 2
The present embodiment is related to a kind of Easy tearing lid, including annular ring cover and the easily tore film covered in annular ring that is sticked, wherein
Easily tore film is prepared in accordance with the following methods:
S1: low density polyethylene (LDPE) 30kg, linear low density polyethylene 25kg, ethylene propylene copolymer 35kg, antifog is weighed
Agent 10kg carries out that PE layers of blown film preparation is blended；
Pet layer and high-barrier pet layer: being carried out compound, recombination velocity 200m/min by S2 on dry type complexing agent, and one section
Drying tunnel temperature is 50 DEG C, and two sections of drying tunnel temperatures are 65 DEG C, and three sections of drying tunnel temperatures are 75 DEG C, and hot drum temperature is 65 DEG C；
S3: PE layer that S1 is prepared carried out with the obtained composite film of S2 on dry compound machine it is further compound,
Recombination velocity is 200m/min, and one section of drying tunnel drying temperature is 65 DEG C, and two sections of drying tunnel temperatures are 85 DEG C, and three sections of drying tunnel temperatures are 90
DEG C, hot drum temperature is 50 DEG C；
S4: the composite membrane that S3 is prepared is placed in curing chamber and cures, and curing temperature is 50 DEG C, and the curing time is
96h。
Embodiment 3
The present embodiment is related to a kind of Easy tearing lid, including annular ring cover and the easily tore film covered in annular ring that is sticked, wherein
Easily tore film is prepared in accordance with the following methods:
S1: low density polyethylene (LDPE) 30kg, linear low density polyethylene 30kg, ethylene propylene copolymer 30kg, antifog is weighed
Agent 10kg carries out that PE layers of blown film preparation is blended；
Pet layer and high-barrier pet layer: being carried out compound, recombination velocity 200m/min by S2 on dry type complexing agent, and one section
Drying tunnel temperature is 65 DEG C, and two sections of drying tunnel temperatures are 65 DEG C, and three sections of drying tunnel temperatures are 90 DEG C, and hot drum temperature is 50 DEG C；
S3: PE layer that S1 is prepared carried out with the obtained composite film of S2 on dry compound machine it is further compound,
Recombination velocity is 200m/min, and one section of drying tunnel drying temperature is 55 DEG C, and two sections of drying tunnel temperatures are 75 DEG C, and three sections of drying tunnel temperatures are 90
DEG C, hot drum temperature is 55 DEG C；
S4: the composite membrane that S3 is prepared is placed in curing chamber and cures, and curing temperature is 65 DEG C, and the curing time is
90h。
Embodiment 4
The present embodiment is related to a kind of Easy tearing lid, including annular ring cover and the easily tore film covered in annular ring that is sticked, wherein
Easily tore film is prepared in accordance with the following methods:
S1: low density polyethylene (LDPE) 28kg, linear low density polyethylene 27kg, ethylene propylene copolymer 35kg, antifog is weighed
Agent 10kg carries out that PE layers of blown film preparation is blended；
Pet layer and high-barrier pet layer: being carried out compound, recombination velocity 200m/min by S2 on dry type complexing agent, and one section
Drying tunnel temperature is 50 DEG C, and two sections of drying tunnel temperatures are 65 DEG C, and three sections of drying tunnel temperatures are 75 DEG C, and hot drum temperature is 65 DEG C；
S3: PE layer that S1 is prepared carried out with the obtained composite film of S2 on dry compound machine it is further compound,
Recombination velocity is 200m/min, and one section of drying tunnel drying temperature is 65 DEG C, and two sections of drying tunnel temperatures are 85 DEG C, and three sections of drying tunnel temperatures are 90
DEG C, hot drum temperature is 50 DEG C；
S4: the composite membrane that S3 is prepared is placed in curing chamber and cures, and curing temperature is 50 DEG C, and the curing time is
96h。
Embodiment 5
The present embodiment is related to a kind of Easy tearing lid, including annular ring cover and the easily tore film covered in annular ring that is sticked, wherein
Easily tore film is prepared in accordance with the following methods:
S1: low density polyethylene (LDPE) 35kg, linear low density polyethylene 30kg, ethylene propylene copolymer 30kg, antifog is weighed
Agent 5kg carries out that PE layers of blown film preparation is blended；
Pet layer and high-barrier pet layer: being carried out compound, recombination velocity 200m/min by S2 on dry type complexing agent, and one section
Drying tunnel temperature is 70 DEG C, and two sections of drying tunnel temperatures are 75 DEG C, and three sections of drying tunnel temperatures are 95 DEG C, and hot drum temperature is 70 DEG C；
S3: PE layer that S1 is prepared carried out with the obtained composite film of S2 on dry compound machine it is further compound,
Recombination velocity is 250m/min, and one section of drying tunnel drying temperature is 45 DEG C, and two sections of drying tunnel temperatures are 70 DEG C, and three sections of drying tunnel temperatures are 70
DEG C, hot drum temperature is 45 DEG C；
S4: the composite membrane that S3 is prepared is placed in curing chamber and cures, and curing temperature is 65 DEG C, and the curing time is
90h。
Test example
Easy tearing lid in embodiment 2-5 is subjected to resistance to boiling test, experimental result is shown in Table 1.
Test condition and method:
The water of built-in 4/5 capacity of can, then Easy tearing lid and tinplate are sealed.It is put into cooking disinfection pot, 121
DEG C, 30 clock of boiling.Observation is taken out, the fog (visibility, transparency) of hyaline membrane is estimated.
The 1. resistance to boiling test result of each embodiment Easy tearing lid of table
Claims (9)
1. a kind of Easy tearing lid characterized by comprising
Annular ring cover (1), inner rim form the bound edge for being hidden inner edge to itself turnup；
And the easily tore film (2) for the opening on annular ring lid (1), for closing annular ring lid (1) that is sticked,
The easily tore film (2) is compound structure film, and the easily tore film (2) includes surface printing layer (21), the barrier layer set gradually
(22) and theca interna (23), the surface printing layer (21) are polyethylene terephthalate (PET) layer, the barrier layer
It (22) is high-barrier pet layer, the theca interna (23) is polyethylene (PE) layer.
2. Easy tearing lid according to claim 1, which is characterized in that plane locating for the easily tore film (2) is lower than the annular
The ring cover capping of ring cover (1).
3. Easy tearing lid according to claim 1 or 2, which is characterized in that close to the bound edge on annular ring lid (1)
Position is formed with the loading end for supporting the easily tore film (2), and the loading end is lower than the ring cover capping of annular ring lid (1).
4. Easy tearing lid according to claim 3, which is characterized in that described integrally formed with knob on the easily tore film (2)
Knob and the junction of easily tore film (2) are formed with folding line, and the knob, which can turn down, to be superimposed on the easily tore film (2).
5. Easy tearing lid according to claim 4, which is characterized in that be additionally provided on the easily tore film (2) for bonding
State the glue point (3) of knob.
6. Easy tearing lid according to claim 5, which is characterized in that be additionally provided on the easily tore film (2) for positioning
State the luminous point (4) of glue point (3).
7. Easy tearing lid according to claim 4, which is characterized in that be provided with non-slip texture on the knob.
8. Easy tearing lid according to claim 1, which is characterized in that the surface printing layer (21) and the barrier layer
(22), adhesive phase (24) are additionally provided between the barrier layer (22) and the theca interna (23).
9. Easy tearing lid according to claim 1, which is characterized in that described PE layers is prepared by polythene material blending,
According to the gross mass meter of the polythene material, the polythene material includes the raw material of following percentage composition:
Low density polyethylene (LDPE) 25wt%-30wt%
Linear low density polyethylene 25wt%-30wt%
Ethylene propylene copolymer 30wt%-35wt%
Antifoggant 5wt%-10wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910802244.4A CN110436050A (en) | 2019-08-28 | 2019-08-28 | A kind of Easy tearing lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910802244.4A CN110436050A (en) | 2019-08-28 | 2019-08-28 | A kind of Easy tearing lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110436050A true CN110436050A (en) | 2019-11-12 |
Family
ID=68438142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910802244.4A Pending CN110436050A (en) | 2019-08-28 | 2019-08-28 | A kind of Easy tearing lid |
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| CN (1) | CN110436050A (en) |
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Application publication date: 20191112 |