CN108189506A - PE films and preparation method thereof are easily taken off in heat-sealing repeatedly - Google Patents

PE films and preparation method thereof are easily taken off in heat-sealing repeatedly Download PDF

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Publication number
CN108189506A
CN108189506A CN201810041334.1A CN201810041334A CN108189506A CN 108189506 A CN108189506 A CN 108189506A CN 201810041334 A CN201810041334 A CN 201810041334A CN 108189506 A CN108189506 A CN 108189506A
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parts
layer
middle layer
10min
films
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CN201810041334.1A
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CN108189506B (en
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吴伟
张贵金
王茂强
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Qingdao East China Sea Packaging Industry Co Ltd
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Qingdao East China Sea Packaging Industry Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
    • C09J153/02—Vinyl aromatic monomers and conjugated dienes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a kind of heat-sealings easily to take off PE films repeatedly, its key points of the technical solution are that internal layer, middle layer and surface layer including being sequentially overlapped setting, it is 2g/10min, density 0.926g/cm that the internal layer, which includes 1.5~3 parts of melting means,3LDPE, 3~6 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE, 3~6 parts of melting means be 2g/10min, density 0.905g/cm3Metallocene LLPDE and 0.08 part of PPA master batch, it is 4g/10min, density 0.920g/cm that the middle layer No.1 material, which including parts by weight is 10 parts of melting means,3LDPE, described No. two material of middle layer include parts by weight for 10 parts of hot melt adhesive, the hot melt adhesive includes 3~6 parts of Styrene Ethylene Styrene block copolymers, 1.5~3 parts of rosin resins and 1.5~3 parts of acrylonitrile butadient styrenes, it is 2g/10min, density 0.926g/cm that the surface layer, which includes 1.5~3 parts of melting means,3LDPE, 3.5~7 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE and 0.08 part of PPA master batch.The present invention solves and notch is torn on PE film complex pockets, and remaining product is not easy the problem of sealing preserves and is fresh-keeping.

Description

PE films and preparation method thereof are easily taken off in heat-sealing repeatedly
Technical field
The present invention relates to film applications, more specifically, it is related to a kind of heat-sealing easily takes off PE films and preparation method thereof repeatedly.
Background technology
PE films, that is, polyethylene film are usually used in the packaging of various food, because its raw material resources enriches, moderate, production The features such as process stabilizing is reliable, product comprehensive performance is superior, the application range of PE films gradually expands, particularly in packaging field and Protective film field, since PE films cost performance is better than other materials, dosage is accounted for always first of universaling packing material.Traditional PE films exist After being fabricated to PE film complex pockets, after product is filled, heat-sealing sealing can preserve and keep well product quality, use production Hot edge seal cannot take off mouth during product, and consumer needs to tear notch on PE film complex pockets, product is taken from notch, but is being produced When product are unable to first use and finish, remaining product is not easy sealing and preserves and fresh-keeping.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of heat-sealing easily to take off PE films, energy repeatedly Enough reach the heat-sealing of PE films or the compound bag making heat-sealing sealing of PE films, by reaching the effect sealed again after heat-sealing or manual pressure Fruit, it is not necessary to tear notch on the compound bag making of PE films, it is convenient, healthy, being capable of Reusability.
To achieve the above object, the present invention provides following technical solutions：PE films are easily taken off in a kind of heat-sealing repeatedly, including successively Internal layer, middle layer and the surface layer being superposed, the internal layer include the component of following parts by weight：1.5~3 parts of melting means are 2g/ 10min, density 0.926g/cm3LDPE, 3~6 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE and 3~ 6 parts of melting means are 2g/10min, density 0.905g/cm3Metallocene LLPDE, the middle layer include middle layer No.1 material and The material of middle layer two, it is 4g/10min, density 0.920g/cm that the middle layer No.1 material, which including parts by weight is 10 parts of melting means,3 LDPE, No. two material of the middle layer include parts by weight for 10 parts of hot melt adhesive, and the surface layer includes the component of following parts by weight： 1.5~3 parts of melting means are 2g/10min, density 0.926g/cm3LDPE and 3.5~7 part of melting means for 2g/10min, density is 0.921g/cm3LLDPE.
By using above-mentioned technical proposal, PE films are easily taken off into heat-sealing repeatedly and are divided into surface layer, middle layer and internal layer, can be increased The structural strength of PE films is easily taken off in heat-sealing repeatedly, and easily taking off PE films repeatedly for heat-sealing provides its necessary anti-press capacity, to maintain heat Envelope easily takes off the normal uses of PE films repeatedly, and LDPE, that is, low density polyethylene (LDPE) is suitble to thermoplastic shaping processing, can be internal layer, in Better shaping processability and thermoplasticity are brought in interbed and surface layer, LLDPE polyethylene, that is, linear low density polyethylene, it and LDPE Polyethylene, which is compared, has higher softening temperature and melting temperature, and also intensity is big, good toughness, rigidity is big, heat-resisting, cold resistance is good The advantages of, the characteristic of metallocene LLDPE is to effectively improve the performance of packaging material, reduces osmotic bursting phenomenon, has Excellent heat sealability using hot melt adhesive in No. two material of middle layer, can increase internal layer and the bond degree on surface layer, reach heat-sealing repeatedly Easily take off the effect that PE films can also be sealed after tear-off repeatedly by heat-sealing or manual expression.
The present invention is further arranged to：The hot melt adhesive includes the component of following parts by weight：3~6 parts of styrene-second Alkene-styrene block copolymer, 1.5~3 parts of plasticizer, 1.5~3 parts of toughener.
By using above-mentioned technical proposal, using styrene ethylene styrene block copolymer as matrix resin, plasticizer The flexibility of matrix resin can be increased, toughener can reduce the problem of matrix resin elongation is low, and brittleness is larger, prevent from being bonded Position bears to crack very much during external force, and middle layer is caused to crack, and toughener can increase toughness, improves bearing strength.
The present invention is further arranged to：The plasticizer refers to rosin resin.
By using above-mentioned technical proposal, rosin resin can not only increase the flexibility of matrix resin, moreover it is possible to increase base The viscosity of body resin makes hot melt adhesive persistently have viscosity.
The present invention is further arranged to：The toughener refers to acrylonitrile-butadiene-styrene copolymer.
By using above-mentioned technical proposal, the intensity height of acrylonitrile-butadiene-styrene copolymer, is easy to add good toughness Work is molded, and its impact resistance ability is strong, can be unaffected when the heat-sealing of tear-off repeatedly easily takes off PE films repeatedly.
The present invention is further arranged to：0.08 part of PPA master batches are separately added into the internal layer and surface layer.
By using above-mentioned technical proposal, PPA is the one kind that will not be had an impact to the physical mechanical property of matrix resin Processing aid can improve surface flatness and surface smoothness that PE films are easily taken off in heat-sealing repeatedly, improve heat-sealing and easily take off repeatedly The surface quality of PE films improves the thickness evenness and thickness stability of film.
The present invention is further arranged to：The PPA master batches are stirred evenly by 95 parts of LLDPE particles and 5 parts of PPA powder Afterwards, double screw extruder is added in, the PPA master batches that PPA contents are 5% are made in extruding pelletization.
In view of the deficienciess of the prior art, it is another object of the present invention to provide a kind of heat-sealings easily to take off PE films repeatedly And preparation method thereof, the heat-sealing of PE films or the compound bag making heat-sealing sealing of PE films can be reached, after heat-sealing or manual pressure Achieve the effect that seal again, it is not necessary to tear notch on the compound bag making of PE films, it is convenient, healthy, can Reusability, including with Lower step：
(1) it heats up：Heating mode is subregion continuous warming, and total heating-up time is 180~220min, and final temperature reaches internal layer master Machine temperature is 160~175 DEG C, middle level host temperature is 30~150 DEG C, surface layer host temperature is 160~175 DEG C, die head temperature It is 160~165 DEG C；
(2) dispensing：The dispensing of internal layer, surface layer and middle layer No.1 material is respectively put into three-layer co-extruded blown film unit according to formula It carries out spitting material, interlayer ratio is set as internal layer：Middle layer：Surface layer=1:1:1；
(3) it is switched on：Booting order is surface layer, middle layer, internal layer, and 1~2 minute sequence in interval is started；
(4) melting extrusion：The temperature of melting is controlled at 140~250 DEG C, after extrusion weight reaches 60kg, by middle layer No.1 Material changes No. two material of middle layer into and continues melting extrusion；
(5) draw film：It by rotary pneumatic axis air-cooler FREQUENCY CONTROL in 10Hz~60Hz, is pulled up simultaneously mediating melten gel rapidly, ensure Hauling speed pours compressed air in 30~40m/min, and to die head inflating port, controls blow-up ratio between 1.5~3.5, with The traction rope being pre-placed is by film bubble average rate pull-up；
(6) splitting winding：Film bubble is entered into corona machine through deflector roll, enters wind-up roll machine by correction intermediate plate later, cuts into two Piece is simultaneously wound with refill；
(7) it shuts down：Corona electromechanical source is closed, closes host power switch.
By using above-mentioned technical proposal, PE film thicknesses and width obtained meet regulation requirement, and the plasticizing of PE films is good, table Face flat smooth no wrinkle, bubble and perforation rupture also have quite excellent mechanical strength, toughness and more soft smooth Feel, extrusion temperature is excessively high resin to be caused easily to decompose, and PE films are more crisp, and longitudinal tensile strength is low, will heat up the time and be set in 180 ~220min can make substantially uniformity inside three-layer co-extruded blown film unit be heated, and extrusion temperature is excessively high resin to be caused easily to decompose, PE Film is more crisp, and longitudinal tensile strength is low, and extrusion temperature is too low, and Plastic can be caused bad, reduces tensile strength, the table of PE films Face glossiness and transparency, thus extrusion temperature control is more suitable between 140~250 DEG C, ensure hauling speed 30 ~40m/min can prevent from drawing too fast, the longitudinal tensile strength increase of PE films, and thickness reduction is also possible to prevent to draw slowly, The longitudinal tensile strength of PE films reduces, thickness increase, blow-up ratio refer to the diameter of film bubble and non-inflation after inflation caliber it Between ratio, blow-up ratio, which increases, can improve the transverse strengths of PE films, but blow-up ratio crosses conference and causes film bubble unstable, and film is easy Fold, therefore blow-up ratio control is advisable between 1.5~3.5.
The present invention is further arranged to：The three-layer co-extruded blown film unit that heating is completed in the step (1) need to keep the temperature 20~ 30min。
By using above-mentioned technical proposal, after the completion of the temperature of three-layer co-extruded blown film unit is heated up, kept the temperature 20~ 30min can be more uniformly distributed the temperature of each layer host, make each area completely heated, prevent in process of production since three layers common Extrusion film unit uneven heating is even to cause product quality bad.
The present invention is further arranged to：Each layer strainer is needed to change, and to open wind turbine before step (3) booting, clearly Clean mouth mould die lip.
By using above-mentioned technical proposal, used strainer is replaced, the net on the strainer after use can be prevented Hole is blocked, and influences the use of strainer, can carry out wind-force cleaning to vane air port using wind turbine, it can be ensured that vane air port is no different Object blocks, and cleans mouth mold die lip, gel and impurity can be prevented to be attached on the die lip of mouth mold.
The present invention is further arranged to：Main-machine screw uses two-flight screw in the step (4), and adds and follow on host Ring water temperature control system and measurement charging device.
By using above-mentioned technical proposal, two-flight screw can be passed out the molten state material of extrusion is relatively stable Come, plasticizing is good, has preferable processing effect, circulating water temperature control system is added on host, can reach temperature-controllable Effect, measurement charging device can ensure middle layer easily take off effect, ensure that it reaches adequate thickness.
In conclusion the invention has the advantages that：PE films are easily taken off in heat-sealing produced by the present invention repeatedly, can reach After the heat-sealing of PE films or the compound bag making heat-sealing of PE films, opened from sealing part, reach what is sealed again after heat-sealing or manual pressure again Effect, it is convenient, healthy, can Reusability, and with preferable impact strength, tear-resistant intensity, higher soft degree, light Slippery and more preferably feel.
Specific embodiment
The present invention is described in further detail with reference to specific embodiment.
Embodiment one：PE films are easily taken off in a kind of heat-sealing repeatedly, internal layer, middle layer and surface layer including being sequentially overlapped setting, institute State the component that internal layer includes following parts by weight：1.5 parts of melting means are 2g/10min, density 0.926g/cm3LDPE, 3 parts of melting means For 2g/10min, density 0.921g/cm3LLDPE, 3 parts of melting means be 2g/10min, density 0.905g/cm3Metallocene LLPDE and 0.08 part of PPA master batch, the middle layer include No. two material of middle layer No.1 material and middle layer, the middle layer No.1 To include parts by weight be 10 parts of melting means to material is 4g/10min, density 0.920g/cm3LDPE, described No. two material of middle layer include Parts by weight are 3 parts of styrene ethylene styrene block copolymers, 1.5 parts of rosin resins, 1.5 parts of acrylonitrile-butadienes-benzene second Alkene copolymer, the surface layer include the component of following parts by weight：1.5 parts of melting means are 2g/10min, density 0.926g/ cm3LDPE, 3.5 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE and 0.08 part of PPA master batch.
The preparation method that PE films are easily taken off in the heat-sealing repeatedly includes the following steps：
(1) it heats up：Heating mode is subregion continuous warming, and total heating-up time is 180~220min, and final temperature reaches internal layer master 160 DEG C of 1st area of machine, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, 30 DEG C of 1st area of middle level host, 90 DEG C of 2nd area, 3 areas 100 DEG C, 130 DEG C of 4th area, 150 DEG C of 5th area, 160 DEG C of 1st area of surface layer host, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, mould First 160 DEG C of 1st area, 165 DEG C of 2nd area, 165 DEG C of 3rd area, 165 DEG C of 4th area, 165 DEG C of 5th area, to 20~30min of heat preservation after the completion of the heating of each area；
(2) dispensing：The dispensing of internal layer, surface layer and middle layer No.1 material is respectively put into three-layer co-extruded blown film unit according to formula It carries out spitting material, interlayer ratio is set as internal layer：Middle layer：Surface layer=1:1:1；
(3) it is switched on：Booting order is surface layer, middle layer, internal layer, and 1~2 minute sequence in interval is started, necessary when host is just switched on It keeps compared with the slow-speed of revolution, control rotating speed needs to change each layer strainer before 20~30 turns/min, booting, opens wind turbine, checks vane wind Mouthful, mouth mold die lip is cleaned, and die lip is soaked with paraffin；
(4) melting extrusion：The temperature of melting is controlled at 140~250 DEG C, after extrusion weight reaches 60kg, by middle layer No.1 Material changes No. two material of middle layer into and continues melting extrusion, wherein the main-machine screw for extrusion uses two-flight screw, and main Circulating water temperature control system and measurement charging device are added on machine；
(5) draw film：It by rotary pneumatic axis air-cooler FREQUENCY CONTROL in 10Hz~60Hz, is pulled up simultaneously mediating melten gel rapidly, ensure Hauling speed pours compressed air in 30~40m/min, and to die head inflating port, controls blow-up ratio between 1.5~3.5, with For the traction rope being pre-placed by film bubble average rate pull-up, operating personnel must wear kiss-coating gloves or heat-insulated leather glove when drawing film, wear long sleeves Work clothes properly protects；
(6) splitting winding：Film bubble is entered into corona machine through deflector roll, enters wind-up roll machine by correction intermediate plate later, cuts into two Piece is simultaneously wound with refill, inflates clamping using air-expanding shaft later；
(7) it shuts down：The setting of each host temperature is dropped to 100~120 DEG C；Die temperature drops to 110~120 DEG C, by each layer Host revolution is reduced between 20~30 turns/min, and adjustment hauling speed is 10~15m/min, ensures that film bubble is not pulled off, when It shuts down when material squeezes out completely and closes corona electromechanical source, close host power switch.
Embodiment two：PE films are easily taken off in a kind of heat-sealing repeatedly, internal layer, middle layer and surface layer including being sequentially overlapped setting, institute State the component that internal layer includes following parts by weight：1.8 parts of melting means are 2g/10min, density 0.926g/cm3LDPE, 3.6 parts it is molten Refer to as 2g/10min, density 0.921g/cm3LLDPE, 3.6 parts of melting means be 2g/10min, density 0.905g/cm3Cyclopentadienyl Metal LLPDE and 0.08 part of PPA master batch, the middle layer include No. two material of middle layer No.1 material and middle layer, the middle layer It is 4g/10min, density 0.920g/cm that No.1 material, which including parts by weight is 10 parts of melting means,3LDPE, No. two material of the middle layer It is 4 parts of styrene ethylene styrene block copolymers including parts by weight, 2 parts of rosin resins, 2 parts of acrylonitrile-butadienes-benzene second Alkene copolymer, the surface layer include the component of following parts by weight：1.8 parts of melting means are 2g/10min, density 0.926g/ cm3LDPE, 4.2 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE and 0.08 part of PPA master batch.
The preparation method that PE films are easily taken off in the heat-sealing repeatedly includes the following steps：
(1) it heats up：Heating mode is subregion continuous warming, and total heating-up time is 180~220min, and final temperature reaches internal layer master 160 DEG C of 1st area of machine, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, 30 DEG C of 1st area of middle level host, 90 DEG C of 2nd area, 3 areas 100 DEG C, 130 DEG C of 4th area, 150 DEG C of 5th area, 160 DEG C of 1st area of surface layer host, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, mould First 160 DEG C of 1st area, 165 DEG C of 2nd area, 165 DEG C of 3rd area, 165 DEG C of 4th area, 165 DEG C of 5th area, to 20~30min of heat preservation after the completion of the heating of each area；
(2) dispensing：The dispensing of internal layer, surface layer and middle layer No.1 material is respectively put into three-layer co-extruded blown film unit according to formula It carries out spitting material, interlayer ratio is set as internal layer：Middle layer：Surface layer=1:1:1；
(3) it is switched on：Booting order is surface layer, middle layer, internal layer, and 1~2 minute sequence in interval is started, necessary when host is just switched on It keeps compared with the slow-speed of revolution, control rotating speed needs to change each layer strainer before 20~30 turns/min, booting, opens wind turbine, checks vane wind Mouthful, mouth mold die lip is cleaned, and die lip is soaked with paraffin；
(4) melting extrusion：The temperature of melting is controlled at 140~250 DEG C, after extrusion weight reaches 60kg, by middle layer No.1 Material changes No. two material of middle layer into and continues melting extrusion, wherein the main-machine screw for extrusion uses two-flight screw, and main Circulating water temperature control system and measurement charging device are added on machine；
(5) draw film：It by rotary pneumatic axis air-cooler FREQUENCY CONTROL in 10Hz~60Hz, is pulled up simultaneously mediating melten gel rapidly, ensure Hauling speed pours compressed air in 30~40m/min, and to die head inflating port, controls blow-up ratio between 1.5~3.5, with For the traction rope being pre-placed by film bubble average rate pull-up, operating personnel must wear kiss-coating gloves or heat-insulated leather glove when drawing film, wear long sleeves Work clothes properly protects；
(6) splitting winding：Film bubble is entered into corona machine through deflector roll, enters wind-up roll machine by correction intermediate plate later, cuts into two Piece is simultaneously wound with refill, inflates clamping using air-expanding shaft later；
(7) it shuts down：The setting of each host temperature is dropped to 100~120 DEG C；Die temperature drops to 110~120 DEG C, by each layer Host revolution is reduced between 20~30 turns/min, and adjustment hauling speed is 10~15m/min, ensures that film bubble is not pulled off, when It shuts down when material squeezes out completely and closes corona electromechanical source, close host power switch.
Embodiment three：PE films are easily taken off in a kind of heat-sealing repeatedly, internal layer, middle layer and surface layer including being sequentially overlapped setting, institute State the component that internal layer includes following parts by weight：2 parts of melting means are 2g/10min, density 0.926g/cm3LDPE, 4 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE, 4 parts of melting means be 2g/10min, density 0.905g/cm3Metallocene LLPDE and 0.08 part of PPA master batch, the middle layer include No. two material of middle layer No.1 material and middle layer, the middle layer No.1 To include parts by weight be 10 parts of melting means to material is 4g/10min, density 0.920g/cm3LDPE, described No. two material of middle layer include Parts by weight for 4.5 parts of styrene ethylene styrene block copolymers, 2.25 parts of rosin resins, 2.25 parts of acrylonitrile-butadienes- Styrol copolymer, the surface layer include the component of following parts by weight：2 parts of melting means are 2g/10min, density 0.926g/ cm3LDPE, 4.7 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE and 0.08 part of PPA master batches.
The preparation method that PE films are easily taken off in the heat-sealing repeatedly includes the following steps：
(1) it heats up：Heating mode is subregion continuous warming, and total heating-up time is 180~220min, and final temperature reaches internal layer master 160 DEG C of 1st area of machine, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, 30 DEG C of 1st area of middle level host, 90 DEG C of 2nd area, 3 areas 100 DEG C, 130 DEG C of 4th area, 150 DEG C of 5th area, 160 DEG C of 1st area of surface layer host, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, mould First 160 DEG C of 1st area, 165 DEG C of 2nd area, 165 DEG C of 3rd area, 165 DEG C of 4th area, 165 DEG C of 5th area, to 20~30min of heat preservation after the completion of the heating of each area；
(2) dispensing：The dispensing of internal layer, surface layer and middle layer No.1 material is respectively put into three-layer co-extruded blown film unit according to formula It carries out spitting material, interlayer ratio is set as internal layer：Middle layer：Surface layer=1:1:1；
(3) it is switched on：Booting order is surface layer, middle layer, internal layer, and 1~2 minute sequence in interval is started, necessary when host is just switched on It keeps compared with the slow-speed of revolution, control rotating speed needs to change each layer strainer before 20~30 turns/min, booting, opens wind turbine, checks vane wind Mouthful, mouth mold die lip is cleaned, and die lip is soaked with paraffin；
(4) melting extrusion：The temperature of melting is controlled at 140~250 DEG C, after extrusion weight reaches 60kg, by middle layer No.1 Material changes No. two material of middle layer into and continues melting extrusion, wherein the main-machine screw for extrusion uses two-flight screw, and main Circulating water temperature control system and measurement charging device are added on machine；
(5) draw film：It by rotary pneumatic axis air-cooler FREQUENCY CONTROL in 10Hz~60Hz, is pulled up simultaneously mediating melten gel rapidly, ensure Hauling speed pours compressed air in 30~40m/min, and to die head inflating port, controls blow-up ratio between 1.5~3.5, with For the traction rope being pre-placed by film bubble average rate pull-up, operating personnel must wear kiss-coating gloves or heat-insulated leather glove when drawing film, wear long sleeves Work clothes properly protects；
(6) splitting winding：Film bubble is entered into corona machine through deflector roll, enters wind-up roll machine by correction intermediate plate later, cuts into two Piece is simultaneously wound with refill, inflates clamping using air-expanding shaft later；
(7) it shuts down：The setting of each host temperature is dropped to 100~120 DEG C；Die temperature drops to 110~120 DEG C, by each layer Host revolution is reduced between 20~30 turns/min, and adjustment hauling speed is 10~15m/min, ensures that film bubble is not pulled off, when It shuts down when material squeezes out completely and closes corona electromechanical source, close host power switch.
Example IV：PE films are easily taken off in a kind of heat-sealing repeatedly, internal layer, middle layer and surface layer including being sequentially overlapped setting, institute State the component that internal layer includes following parts by weight：2.4 parts of melting means are 2g/10min, density 0.926g/cm3LDPE, 4.8 parts it is molten Refer to as 2g/10min, density 0.921g/cm3LLDPE, 4.8 parts of melting means be 2g/10min, density 0.905g/cm3Cyclopentadienyl Metal LLPDE and 0.08 part of PPA master batch, the middle layer include No. two material of middle layer No.1 material and middle layer, the middle layer It is 4g/10min, density 0.920g/cm that No.1 material, which including parts by weight is 10 parts of melting means,3LDPE, No. two material of the middle layer Including parts by weight for 5 parts of styrene ethylene styrene block copolymers, 2.5 parts of rosin resins, 2.5 parts of acrylonitrile-butadienes- Styrol copolymer, the surface layer include the component of following parts by weight：2.5 parts of melting means are 2g/10min, and density is 0.926g/cm3LDPE, 5.8 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE and 0.08 part of PPA master batch.
The preparation method that PE films are easily taken off in the heat-sealing repeatedly includes the following steps：
(1) it heats up：Heating mode is subregion continuous warming, and total heating-up time is 180~220min, and final temperature reaches internal layer master 160 DEG C of 1st area of machine, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, 30 DEG C of 1st area of middle level host, 90 DEG C of 2nd area, 3 areas 100 DEG C, 130 DEG C of 4th area, 150 DEG C of 5th area, 160 DEG C of 1st area of surface layer host, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, mould First 160 DEG C of 1st area, 165 DEG C of 2nd area, 165 DEG C of 3rd area, 165 DEG C of 4th area, 165 DEG C of 5th area, to 20~30min of heat preservation after the completion of the heating of each area；
(2) dispensing：The dispensing of internal layer, surface layer and middle layer No.1 material is respectively put into three-layer co-extruded blown film unit according to formula It carries out spitting material, interlayer ratio is set as internal layer：Middle layer：Surface layer=1:1:1；
(3) it is switched on：Booting order is surface layer, middle layer, internal layer, and 1~2 minute sequence in interval is started, necessary when host is just switched on It keeps compared with the slow-speed of revolution, control rotating speed needs to change each layer strainer before 20~30 turns/min, booting, opens wind turbine, checks vane wind Mouthful, mouth mold die lip is cleaned, and die lip is soaked with paraffin；
(4) melting extrusion：The temperature of melting is controlled at 140~250 DEG C, after extrusion weight reaches 60kg, by middle layer No.1 Material changes No. two material of middle layer into and continues melting extrusion, wherein the main-machine screw for extrusion uses two-flight screw, and main Circulating water temperature control system and measurement charging device are added on machine；
(5) draw film：It by rotary pneumatic axis air-cooler FREQUENCY CONTROL in 10Hz~60Hz, is pulled up simultaneously mediating melten gel rapidly, ensure Hauling speed pours compressed air in 30~40m/min, and to die head inflating port, controls blow-up ratio between 1.5~3.5, with For the traction rope being pre-placed by film bubble average rate pull-up, operating personnel must wear kiss-coating gloves or heat-insulated leather glove when drawing film, wear long sleeves Work clothes properly protects；
(6) splitting winding：Film bubble is entered into corona machine through deflector roll, enters wind-up roll machine by correction intermediate plate later, cuts into two Piece is simultaneously wound with refill, inflates clamping using air-expanding shaft later；
(7) it shuts down：The setting of each host temperature is dropped to 100~120 DEG C；Die temperature drops to 110~120 DEG C, by each layer Host revolution is reduced between 20~30 turns/min, and adjustment hauling speed is 10~15m/min, ensures that film bubble is not pulled off, when It shuts down when material squeezes out completely and closes corona electromechanical source, close host power switch.
Embodiment five：PE films are easily taken off in a kind of heat-sealing repeatedly, internal layer, middle layer and surface layer including being sequentially overlapped setting, institute State the component that internal layer includes following parts by weight：2.8 parts of melting means are 2g/10min, density 0.926g/cm3LDPE, 5.6 parts it is molten Refer to as 2g/10min, density 0.921g/cm3LLDPE, 5.6 parts of melting means be 2g/10min, density 0.905g/cm3Cyclopentadienyl Metal LLPDE and 0.08 part of PPA master batch, the middle layer include No. two material of middle layer No.1 material and middle layer, the middle layer It is 4g/10min, density 0.920g/cm that No.1 material, which including parts by weight is 10 parts of melting means,3LDPE, No. two material of the middle layer It is 5.5 parts of styrene ethylene styrene block copolymers including parts by weight, 2.75 parts of rosin resins, 2.75 parts of acrylic nitrile-butadienes Diene-styrene copolymer, the surface layer include the component of following parts by weight：2.8 parts of melting means are 2g/10min, and density is 0.926g/cm3LDPE, 6.5 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE and 0.08 part of PPA master batches.
The preparation method that PE films are easily taken off in the heat-sealing repeatedly includes the following steps：
(1) it heats up：Heating mode is subregion continuous warming, and total heating-up time is 180~220min, and final temperature reaches internal layer master 160 DEG C of 1st area of machine, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, 30 DEG C of 1st area of middle level host, 90 DEG C of 2nd area, 3 areas 100 DEG C, 130 DEG C of 4th area, 150 DEG C of 5th area, 160 DEG C of 1st area of surface layer host, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, mould First 160 DEG C of 1st area, 165 DEG C of 2nd area, 165 DEG C of 3rd area, 165 DEG C of 4th area, 165 DEG C of 5th area, to 20~30min of heat preservation after the completion of the heating of each area；
(2) dispensing：The dispensing of internal layer, surface layer and middle layer No.1 material is respectively put into three-layer co-extruded blown film unit according to formula It carries out spitting material, interlayer ratio is set as internal layer：Middle layer：Surface layer=1:1:1；
(3) it is switched on：Booting order is surface layer, middle layer, internal layer, and 1~2 minute sequence in interval is started, necessary when host is just switched on It keeps compared with the slow-speed of revolution, control rotating speed pays attention to observation ammeter, pressure gauge, it is ensured that host electric current and pressure in 20~30 turns/min Without departing from technological requirement range, engine speed can slowly be improved, each layer strainer is needed to change before booting, open wind turbine, checked Mouth mold die lip is cleaned, and die lip is soaked with paraffin in vane air port；
(4) melting extrusion：The temperature of melting is controlled at 140~250 DEG C, after extrusion weight reaches 60kg, by middle layer No.1 Material changes No. two material of middle layer into and continues melting extrusion, wherein the main-machine screw for extrusion uses two-flight screw, and main Circulating water temperature control system and measurement charging device are added on machine；
(5) draw film：It by rotary pneumatic axis air-cooler FREQUENCY CONTROL in 10Hz~60Hz, is pulled up simultaneously mediating melten gel rapidly, ensure Hauling speed pours compressed air in 30~40m/min, and to die head inflating port, controls blow-up ratio between 1.5~3.5, with For the traction rope being pre-placed by film bubble average rate pull-up, operating personnel must wear kiss-coating gloves or heat-insulated leather glove when drawing film, wear long sleeves Work clothes properly protects；
(6) splitting winding：Film bubble is entered into corona machine through deflector roll, enters wind-up roll machine by correction intermediate plate later, cuts into two Piece is simultaneously wound with refill, inflates clamping using air-expanding shaft later；
(7) it shuts down：The setting of each host temperature is dropped to 100~120 DEG C；Die temperature drops to 110~120 DEG C, by each layer Host revolution is reduced between 20~30 turns/min, and adjustment hauling speed is 10~15m/min, ensures that film bubble is not pulled off, when It shuts down when material squeezes out completely and closes corona electromechanical source, close host power switch.
Embodiment six：PE films are easily taken off in a kind of heat-sealing repeatedly, internal layer, middle layer and surface layer including being sequentially overlapped setting, institute State the component that internal layer includes following parts by weight：3 parts of melting means are 2g/10min, density 0.926g/cm3LDPE, 6 parts of melting means be 2g/10min, density 0.921g/cm3LLDPE, 6 parts of melting means be 2g/10min, density 0.905g/cm3Metallocene LLPDE and 0.08 part of PPA master batch, the middle layer include No. two material of middle layer No.1 material and middle layer, the middle layer No.1 To include parts by weight be 10 parts of melting means to material is 4g/10min, density 0.920g/cm3LDPE, described No. two material of middle layer include Parts by weight are 6 parts of styrene ethylene styrene block copolymers, 3 parts of rosin resins, 3 parts of acrylonitrile-butadiene-styrene (ABS)s are total to Polymers, the surface layer include the component of following parts by weight：3 parts of melting means are 2g/10min, density 0.926g/cm3's LDPE, 7 parts of melting means are 2g/10min, density 0.921g/cm3LLDPE and 0.08 part of PPA master batch.
The preparation method that PE films are easily taken off in the heat-sealing repeatedly includes the following steps：
(1) it heats up：Heating mode is subregion continuous warming, and total heating-up time is 180~220min, and final temperature reaches internal layer master 160 DEG C of 1st area of machine, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, 30 DEG C of 1st area of middle level host, 90 DEG C of 2nd area, 3 areas 100 DEG C, 130 DEG C of 4th area, 150 DEG C of 5th area, 160 DEG C of 1st area of surface layer host, 170 DEG C of 2nd area, 175 DEG C of 3rd area, 175 DEG C of 4th area, 170 DEG C of 5th area, mould First 160 DEG C of 1st area, 165 DEG C of 2nd area, 165 DEG C of 3rd area, 165 DEG C of 4th area, 165 DEG C of 5th area, to 20~30min of heat preservation after the completion of the heating of each area；
(2) dispensing：The dispensing of internal layer, surface layer and middle layer No.1 material is respectively put into three-layer co-extruded blown film unit according to formula It carries out spitting material, interlayer ratio is set as internal layer：Middle layer：Surface layer=1:1:1；
(3) it is switched on：Booting order is surface layer, middle layer, internal layer, and 1~2 minute sequence in interval is started, necessary when host is just switched on It keeps compared with the slow-speed of revolution, control rotating speed pays attention to observation ammeter, pressure gauge, it is ensured that host electric current and pressure in 20~30 turns/min Without departing from technological requirement range, engine speed can slowly be improved, each layer strainer is needed to change before booting, open wind turbine, checked Mouth mold die lip is cleaned, and die lip is soaked with paraffin in vane air port；
(4) melting extrusion：The temperature of melting is controlled at 140~250 DEG C, after extrusion weight reaches 60kg, by middle layer No.1 Material changes No. two material of middle layer into and continues melting extrusion, wherein the main-machine screw for extrusion uses two-flight screw, and main Circulating water temperature control system and measurement charging device are added on machine；
(5) draw film：It by rotary pneumatic axis air-cooler FREQUENCY CONTROL in 10Hz~60Hz, is pulled up simultaneously mediating melten gel rapidly, ensure Hauling speed pours compressed air in 30~40m/min, and to die head inflating port, controls blow-up ratio between 1.5~3.5, with For the traction rope being pre-placed by film bubble average rate pull-up, operating personnel must wear kiss-coating gloves or heat-insulated leather glove when drawing film, wear long sleeves Work clothes properly protects；
(6) splitting winding：Film bubble is entered into corona machine through deflector roll, enters wind-up roll machine by correction intermediate plate later, cuts into two Piece is simultaneously wound with refill, inflates clamping using air-expanding shaft later；
(7) it shuts down：The setting of each host temperature is dropped to 100~120 DEG C；Die temperature drops to 110~120 DEG C, by each layer Host revolution is reduced between 20~30 turns/min, and adjustment hauling speed is 10~15m/min, ensures that film bubble is not pulled off, when It shuts down when material squeezes out completely and closes corona electromechanical source, close host power switch.
The properties of product of the present embodiment are detected, wherein break-draw degree is detected by GB13022, and elongation at break is pressed GB13022 is detected, and tearing strength is detected by GB/T16578, and friction coefficient is detected by GB10006, and impact strength presses GB9639A methods Detection, heat seal strength are detected by QB-75041166-9-02 at 110 DEG C, 115 DEG C and 120 DEG C respectively, testing result ginseng It is shown in Table 1.
The performance test of 1 product of table
From table 1 it follows that the product of the present embodiment have preferable break-draw degree and break-draw rate, and with compared with Strong lear energy can avoid opening the situation for occurring the tear of PE films and fracture during sealing repeatedly.
Heat-sealing sealing is carried out to the product of the present embodiment, the heat seal strength and initial heat-sealing peeling force that seal for the first time are carried out Test, to open sealing after with hand press pressure seal mouth and heat-sealing sealing sealing-strength test respectively, then respectively opponent press The peeling force of sealing again of sealing and heat-sealing sealing is tested, and test result is shown in Table 2.
2 heat seal strength of table and peel test force
Heat seal strength during first heat-sealing sealing can preserve product in more than 15N well as can be seen from Table 2, will not Leak out product；Initial heat-sealing peeling force is in 19N hereinafter, the easy effect for opening sealing can be realized；Using hand pressure seal mouth When, sealing-strength need to only gently pinch between 3N to 4N, so that it may realize that sealing preserves product again；Sealing is strong again simultaneously Degree is not too high, when being removed, is easy to open sealing yet；When carrying out heat-sealing sealing again, sealing-strength is not high, in 6N To between 7N, the peeling force after sealing again is also in 6N to 7N, it is easy to open sealing, simply, it is hygienic, can Reusability.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (10)

1. PE films are easily taken off in a kind of heat-sealing repeatedly, it is characterised in that：Internal layer, middle layer and surface layer including being sequentially overlapped setting, institute State the component that internal layer includes following parts by weight：1.5~3 parts of melting means are 2g/10min, density 0.926g/cm3LDPE, 3~6 Part melting means is 2g/10min, density 0.921g/cm3LLDPE and 3~6 part of melting means be 2g/10min, density 0.905g/ cm3Metallocene LLPDE, the middle layer includes middle layer No.1 material and the material of middle layer two, the middle layer No.1 material packet It is 4g/10min, density 0.920g/cm that include parts by weight, which be 10 parts of melting means,3LDPE, described No. two material of middle layer include weight Part is 10 parts of hot melt adhesive, and the surface layer includes the component of following parts by weight：1.5~3 parts of melting means are 2g/10min, and density is 0.926g/cm3LDPE and 3.5~7 part of melting means be 2g/10min, density 0.921g/cm3LLDPE.
2. PE films are easily taken off in heat-sealing according to claim 1 repeatedly, it is characterised in that：The hot melt adhesive includes following parts by weight Component：3~6 parts of styrene ethylene styrene block copolymers, 1.5~3 parts of plasticizer, 1.5~3 parts of toughener.
3. PE films are easily taken off in heat-sealing according to claim 2 repeatedly, it is characterised in that：The plasticizer refers to rosin resin.
4. PE films are easily taken off in heat-sealing according to claim 2 repeatedly, it is characterised in that：The toughener refers to acrylic nitrile-butadiene Diene-styrene copolymer.
5. PE films are easily taken off in heat-sealing according to claim 1 repeatedly, it is characterised in that：It is separately added into the internal layer and surface layer 0.08 part of PPA master batches.
6. PE films are easily taken off in heat-sealing according to claim 5 repeatedly, it is characterised in that：The PPA master batches are by 95 parts of LLDPE After particle and 5 parts of PPA powder stir evenly, double screw extruder is added in, it is female that the PPA that PPA contents are 5% is made in extruding pelletization Grain.
7. prepare the method as claimed in any one of claims 1 to 6 for sealing and easily taking off PE films repeatedly, it is characterised in that：Including following Step：
(1) it heats up：Heating mode is subregion continuous warming, and total heating-up time is 180~220min, and final temperature reaches internal layer master Machine temperature is 160~175 DEG C, middle level host temperature is 30~150 DEG C, surface layer host temperature is 160~175 DEG C, die head temperature It is 160~165 DEG C；
(2) dispensing：The dispensing of internal layer, surface layer and middle layer No.1 material is respectively put into three-layer co-extruded blown film unit according to formula It carries out spitting material, interlayer ratio is set as internal layer：Middle layer：Surface layer=1:1:1；
(3) it is switched on：Booting order is surface layer, middle layer, internal layer, and 1~2 minute sequence in interval is started；
(4) melting extrusion：The temperature of melting is controlled at 140~250 DEG C, after extrusion weight reaches 60kg, by middle layer No.1 Material changes No. two material of middle layer into and continues melting extrusion；
(5) draw film：It by rotary pneumatic axis air-cooler FREQUENCY CONTROL in 10Hz~60Hz, is pulled up simultaneously mediating melten gel rapidly, ensure Hauling speed pours compressed air in 30~40m/min, and to die head inflating port, controls blow-up ratio between 1.5~3.5, with The traction rope being pre-placed is by film bubble average rate pull-up；
(6) splitting winding：Film bubble is entered into corona machine through deflector roll, enters wind-up roll machine by correction intermediate plate later, cuts into two Piece is simultaneously wound with refill；
(7) it shuts down：Corona electromechanical source is closed, closes host power switch.
8. according to claim 7 seal the preparation method for easily taking off PE films repeatedly, it is characterised in that：In the step (1) The three-layer co-extruded blown film unit that heating is completed need to keep the temperature 20~30min.
9. according to claim 7 seal the preparation method for easily taking off PE films repeatedly, it is characterised in that：The step (3) is opened Each layer strainer is needed to change, and to open wind turbine before machine, clean mouth mold die lip.
10. according to claim 7 seal the preparation method for easily taking off PE films repeatedly, it is characterised in that：In the step (4) Main-machine screw uses two-flight screw, and circulating water temperature control system and measurement charging device are added on host.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108943949A (en) * 2018-07-27 2018-12-07 黄山永新股份有限公司 PE film and preparation method thereof is easily opened at a kind of heat-sealing interface
CN111057305A (en) * 2019-12-17 2020-04-24 睿欧启富(苏州)包装科技有限公司 High-beam heat-shrinkable film material and manufacturing process thereof
CN111469512A (en) * 2020-04-14 2020-07-31 江阴申隆包装材料有限公司 Food is with repeated heat-seal film and repeated heat-seal packaging film thereof
CN112092328A (en) * 2020-05-02 2020-12-18 山东华致林医药科技有限公司 Blown film containing method
CN114030258A (en) * 2021-11-18 2022-02-11 青岛东海包装产业有限公司 Ultralow-strength easy-tear PE film and preparation process thereof
CN115384153A (en) * 2022-07-23 2022-11-25 浙江保禄包装科技股份有限公司 Composite film capable of being repeatedly heat-sealed and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103862768A (en) * 2014-03-27 2014-06-18 昊辰（无锡）塑业有限公司 Polyethylene isolating film reusable in tire production and preparation method of polyethylene isolating film

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103862768A (en) * 2014-03-27 2014-06-18 昊辰（无锡）塑业有限公司 Polyethylene isolating film reusable in tire production and preparation method of polyethylene isolating film

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108943949A (en) * 2018-07-27 2018-12-07 黄山永新股份有限公司 PE film and preparation method thereof is easily opened at a kind of heat-sealing interface
CN111057305A (en) * 2019-12-17 2020-04-24 睿欧启富(苏州)包装科技有限公司 High-beam heat-shrinkable film material and manufacturing process thereof
CN111469512A (en) * 2020-04-14 2020-07-31 江阴申隆包装材料有限公司 Food is with repeated heat-seal film and repeated heat-seal packaging film thereof
CN112092328A (en) * 2020-05-02 2020-12-18 山东华致林医药科技有限公司 Blown film containing method
CN114030258A (en) * 2021-11-18 2022-02-11 青岛东海包装产业有限公司 Ultralow-strength easy-tear PE film and preparation process thereof
CN114030258B (en) * 2021-11-18 2024-02-06 青岛东海包装产业有限公司 Ultralow-strength easy-to-tear PE film and preparation process thereof
CN115384153A (en) * 2022-07-23 2022-11-25 浙江保禄包装科技股份有限公司 Composite film capable of being repeatedly heat-sealed and preparation method thereof
CN115384153B (en) * 2022-07-23 2023-05-16 浙江保禄包装科技股份有限公司 Composite film capable of being repeatedly heat-sealed and preparation method thereof

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