CN107351474A - A kind of simple tension can high speed printing delustring PE films and its production technology - Google Patents

A kind of simple tension can high speed printing delustring PE films and its production technology Download PDF

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Publication number
CN107351474A
CN107351474A CN201710543499.4A CN201710543499A CN107351474A CN 107351474 A CN107351474 A CN 107351474A CN 201710543499 A CN201710543499 A CN 201710543499A CN 107351474 A CN107351474 A CN 107351474A
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China
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layer
hot sealing
delustring
intermediate layer
corona
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Granted
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CN201710543499.4A
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CN107351474B (en
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潘健
高淼
汪飞
胡鸿波
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Novel Huangshan Packaging Co Ltd
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Novel Huangshan Packaging 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/408—Matt, dull surface
    • 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
    • B32B2307/514—Oriented
    • B32B2307/516—Oriented mono-axially
    • 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
    • B32B2307/70—Other properties
    • B32B2307/75—Printability
    • 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
    • B32B2439/00—Containers; Receptacles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

A kind of simple tension can high speed printing delustring PE films and its production technology.The delustring PE films include corona layer, intermediate layer and hot sealing layer, and corona layer, intermediate layer and hot sealing layer include the bimodal metallocene PE of blown film level independently of one another.Simple tension provided by the invention can high speed printing delustring PE films on the premise of haze is ensured, fisheye is low, and deflection is high, can meet the needs of high speed printing.

Description

A kind of simple tension can high speed printing delustring PE films and its production technology
Technical field
The invention belongs to packaging field, more particularly to a kind of simple tension can high speed printing delustring PE (polyethylene) film And its production technology.
Background technology
With the change of people's aesthetic standards and the raising of consumption idea, the demand of package material surface feature is also presented Diversity, matt film is a kind of novel package film developed under this requirement, for food, gift, candy, women and children The front cover of the printing paper and bound book of the packaging of product etc. and large-scale outdoor advertising, there are good restocking effect and advertisement effect Fruit, a kind of third dimension and luxurious sense are given people, stimulates desire to purchase.
According to the difference of product surface glossiness, product is divided into gloss, matt and the class of delustring product three：Glossiness is big In 70% referred to as gloss product, glossiness is referred to as delustring product less than 15%, and remaining system is classified as matt product.Matt film is For a kind of low gloss haze into the film for packaging of diffusing reflection extinction effect, film surface has low-down gloss similar to paper, Its surface reflection is weak and soft, and surface gloss is less than 15%, and mist degree is typically more than 70%, has comfortable feel, outer When seeing quiet elegant, printing color can reproduction true to nature many advantages, such as, have the title of class paper wrapper film or natural light glossy film.
Existing matt film is typically BOPP matt films, and PE matt films are less common, and existing can print disappears Following problems be present in light PE films：Deflection is inadequate, and film is easily stretchable to cause printing element size not ensure, reduces printing effect Rate, lack restocking effect after independent pack content；And fisheye is more, surface printing effect can not be ensured, reduce packaging advertisement Effect.
The content of the invention
Therefore, an object of the present invention be to provide a kind of simple tension can high speed printing delustring PE films.The present invention The simple tension of offer can high speed printing delustring PE films, on the premise of haze is ensured, fisheye is low, and deflection is high, meets at a high speed The demand of printing.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of simple tension can high speed printing delustring PE films, including corona layer, intermediate layer and hot sealing layer, wherein, corona Layer, intermediate layer and hot sealing layer include the bimodal metallocene PE of blown film level independently of one another.
The processing capability of metallocene polyethylene that the present invention uses is good, and stress crack resistance performance is good, high mechanical strength, by making Corona layer is obtained with the bimodal metallocene PE of blown film level, delustring PE films made from intermediate layer and hot sealing layer so that product has Haze, high-stiffness.
Preferably, the MI for the bimodal metallocene PE of blown film level that the corona layer or hot sealing layer include 190 DEG C/ It is 0.8-1.2g/10min, preferably 1g/10min under 5.0kg, density 0.915-0.930g/cm3, preferably 0.923g/ cm3。
Preferably, the Vicat softening point for the bimodal metallocene PE of blown film level that the corona layer or hot sealing layer include is 95-110 DEG C, preferably 101 DEG C, fusing point are 120-130 DEG C, preferably 124 DEG C.
The bimodal metallocene PE of blown film level that corona layer or hot sealing layer include may be the same or different, preferably identical.
Preferably, the intermediate layer includes two kinds of different bimodal metallocene PEs of blown film level, one of which blown film The MI of the bimodal metallocene PE of level is 0.2-0.3g/10min, preferably 0.25g/10min under 190 DEG C/5.0kg, density For 0.945-0.960g/cm3, preferably 0.952g/cm3；Another MI of the bimodal metallocene PE of blown film level 190 DEG C/ It is 0.8-1.2g/10min, preferably 1g/10min under 5.0kg, density 0.915-0.930g/cm3, preferably 0.923g/ cm3。
Preferably, the intermediate layer includes two kinds of different bimodal metallocene PEs of blown film level, one of which blown film level The Vicat softening point of bimodal metallocene PE be 124-135 DEG C, preferably 129 DEG C, fusing point be 128-140 DEG C, preferably 133 ℃；Another Vicat softening point of the bimodal metallocene PE of blown film level be 95-110 DEG C, preferably 101 DEG C, fusing point 120- 130 DEG C, preferably 124 DEG C.Both different bimodal metallocene PE interactions, the printing adaptability of film can be improved And mechanical performance.
Preferably, the raw material of the corona layer or hot sealing layer includes FB2230, preferably mainly FB2230 is included.Above-mentioned group Into hot sealing layer especially high-strength hot sealing strength can be provided.Preferably also containing 0.5~1%PPA, (peace color matching processing helps in corona layer Agent 100991-K), the generation of film surface runner line can be reduced, reduces the generation of resin melt rupture.
Preferably, the raw material in the intermediate layer includes FB2230 and FB1520.
Preferably, the raw material in the intermediate layer includes 40-60wt%FB2230 and 40-60wt%FB1520.It is preferred that FB2230 and FB1520 contains identical mass fraction.
Preferably, the raw material of the hot sealing layer also includes slipping agent and/or opening agent.The present invention is to the slipping agent and opens The species of mouth agent does not have special limitation, using slipping agent well known to those skilled in the art and opening agent, can such as adopt With its commercial goods.In the present invention, the slipping agent and opening agent can reduce the coefficient of friction of delustring PE films so that compound It is good that film packaging walks machine.Such as using the MI of slipping agent be 10 ± 2g/10min under 190 DEG C/2.16kg, bulk density 550 ± 20g/l, it is 55 ± 5 per gram particle material, relative density 0.92 ± 0.02.In the present invention, the preferred trade mark of the slipping agent is The slipping agent of 10090-K peace color matching, smoothness is provided for film.The opening agent is divided into organic and inorganic；Organic Opening agent mainly includes oleamide；Inorganic opening agent is mainly based on silica.Specifically, the preferred board of opening agent Number for AB-20LD Beijing Aaron opening agent.It is of the invention preferably to use slipping agent and opening agent, best results simultaneously.At this In invention, the quality of the slipping agent is preferably the 0.5-2% of medium high density polyethylene gross mass in hot sealing layer, more preferably 1%；The quality of the opening agent is preferably the 0.5-2% of medium high density polyethylene gross mass in hot sealing layer, more preferably 1%. The content that the slipping agent of above range closes opening agent may be such that final obtained delustring PE films have lower coefficient of friction so that It is best that composite film packaging walks machine.
Preferably, the raw material of the corona layer mainly includes FB2230, the raw material in the intermediate layer includes 40-60wt% FB2230 and 40-60wt%FB1520, the raw material of the hot sealing layer include FB2230, a small amount of 10090-K and AB20-LD.
In some embodiments it is highly preferred that the raw material of the corona layer mainly includes FB2230, the intermediate layer Raw material includes 50wt%FB2230 and 50wt%FB1520, and the raw material of the hot sealing layer mainly includes FB2230 and a small amount of 10090- K and AB20-LD.
Preferably, the thickness ratio of corona layer, intermediate layer and hot sealing layer is 1:1-3:0.5-2, such as can be 1:1:0.5； Can also be 1:1:2, it is necessary to which the performance such as antipollution heat-sealing of hot sealing layer resin is more prominent；Can also be 1:3:2, it is necessary to The performance of hot sealing layer and intermediate layer resin is more prominent；More preferably 1:2:1, combination property is more excellent.
Delustring PE films of the present invention can be prepared by existing known method, preferably, passing through the following present invention It is prepared by the method for offer.
A kind of simple tension of the present invention can high speed printing delustring PE films production technology, the technique be by this The raw material coextrusion blowing drawing and forming of the corona layer, intermediate layer and hot sealing layer is invented, is specifically comprised the following steps：
By the raw material co-extrusion modling of corona layer, intermediate layer and hot sealing layer, the corona layer that obtains including being in contact successively, in The hot melt cylinder film of interbed and hot sealing layer；
By it is described hot melt cylinder film put out bubble folder it is flat after be blow molded into piece film, cooling and shaping, film is drawn to MDO draw units Row drawing and setting；
The outer layer surface of film after the drawing and setting is subjected to sided corona treatment, obtains the delustring PE films.
Preferably, the production technology uses three layers of W＆H equipment.
Preferably, the filter screen of filter is at least 4 layers in production technology.
Preferably, the filter screen is 20/60/100/20 mesh, using combinations thereof filter screen film can be avoided to produce fisheye.
Preferably, the extrusion temperature of the slot type machine barrel of corona layer, intermediate layer and hot sealing layer is 50 ± 10 DEG C during coextrusion, Preferably 50 ± 5 DEG C.
Preferably, the extrusion temperature in the area of machine barrel 1 of corona layer, intermediate layer and hot sealing layer is 185 ± 10 DEG C during coextrusion, Preferably 185 ± 5 DEG C.
Preferably, the area of machine barrel 2 of corona layer, intermediate layer and hot sealing layer, the area of machine barrel 3, the area of machine barrel 4, draping during coextrusion Area, the extrusion temperature of flange are 190 ± 10 DEG C, preferably 190 ± 5 DEG C.
Preferably, the die head temperature in 1st area to 10th area is 194 ± 10 DEG C, preferably 195 ± 5 DEG C during coextrusion.
Raw material is melted by extruder and forms pipe, and compression sky is gone out from extruder die head center after pipe is stretched Gas, pipe is blown into blister film, while blister film is included into corona successively through vane cooling air cooling sizing so as to be made The delustring PE films of layer, intermediate layer and hot sealing layer.
In the present invention, the blow-up ratio of the Coextrusion Blow Moulding is preferably 1.5-2.6 in certain embodiments.Inflation Than the lateral expansion multiple for film, cross directional stretch actually is carried out to film, is one of key control point of blow molding process.Cause This, the shape and size of product, the size of pipe, should rationally determine that blow-up ratio could give birth to according to the species and property of material The good product of output.When the present invention controls the blow-up ratio of polymer film to be 1.5-2.6 in processing technology, final be made may be such that Film there is high heat-sealing strength, good heat-resisting, frost resistance, low glossiness.
MDO is the english abbreviation of film machine direction stretching, i.e. longitudinal stretching.Film can be improved along machine direction stretching Performance, such as optical property, mechanical performance.However, the temperature setting during how controlling longitudinal stretching when is to final Properties of product have important influence.Longitudinal stretching is more preferably than preferably 1.05-1.5 in the production technology of the present invention 1.2.Temperature setting is preferably as follows：PH1 (pre- hot-rolling 1)：50 ± 5, PH2 (pre- hot-rolling 2)：75 ± 5, SD1 (draw roll 1- is at a slow speed)： 85 ± 5, FD1 (draw roll 2- is quick)：85 ± 5, A1 (quenching roller 1)：88 ± 5, A2 (quenching roller 2)：88 ± 5, C1 (chill roll 1)：65 ± 5, C2 (chill roll 2)：45±5.By above-mentioned setting may be such that obtained film have preferable extinction and preferably Rigidity, tearing strength and barrier property.
The density of material is measured according to ASTM D 4833 method in the present invention.MI is according to ASTM D 1238 What method measured.Fusing point is measured according to ISO 11357/03 method.Vicat softening point is that ISO 306 method measures 's.
By adding high density, low fisheye raw material in the formula of the present invention, it can be ensured that the fisheye of final obtained film is low, Deflection is high；The extinction of film is realized by the blending of raw material.And produced by the equipment of W＆H blown film lines, it is ensured that the thickness of film The thin uniformity；Online MDO low ranges stretching, plays cooling and shaping effect, beneficial to the release of PE film internal stress, reduces and shrinks, from And it is used in high speed printing.
The present invention by develop simple tension can high speed printing delustring PE films, can greatly improve printing adaptability, reduce To the high dependence for matching somebody with somebody printing equipment, printing consumption is reduced, production efficiency is improved, allows PE high speed printings to become a reality.Pass through original The combination of material, MDO drawing and settings so that matt film has high-stiffness, low fisheye, make its no matter individual layer PE packaging or it is compound There is wider application in structural packaging.
Brief description of the drawings
Fig. 1 is the production technological process of the delustring PE films of the present invention.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art are it will be clearly understood that the implementation Example is used only for help and understands the present invention, is not construed as the concrete restriction to the present invention.
Embodiment 1-5
The raw material composition and formula of embodiment 1-5 delustring PE films are shown in Table 1.
FB2230 and FB1520 is the bimodal metallocene PE of blown film level of Borouge company.10090-K is the slipping agent of peace color matching. AB-20LD is the opening agent of Beijing Aaron.
Table 1
Wherein thickness ratio is the thickness ratio of corona layer, intermediate layer and hot sealing layer.
Fig. 1 is the production technological process of delustring PE films of the present invention.The delustring PE films of the present invention pass through blown film by PE particles Then delustring PE films are finally made through MDO stretchings again in technique.
The present invention can use online sided corona treatment, and list is two-sided as requested can all be handled, and the surface tension value of finished product is big In 38dyn.
Specific production technology is as follows：
By the raw material co-extrusion modling of corona layer, intermediate layer and hot sealing layer, the corona layer that obtains including being in contact successively, in The tempreature bulb of interbed and hot sealing layer；
By the tempreature bulb Blown Film, cooling and shaping；
The outer layer surface of film after the cooling and shaping is subjected to sided corona treatment, obtains delustring PE films.
Wherein, the filter screen of filter is about 20/60/100/20 mesh, and mesh size is about 80 μm, otherwise may be caused thin Film produces fisheye.
Wherein, the filter screen of filter is about 20/60/100/20 mesh, and mesh size is about 80 μm, otherwise may be caused thin Film produces fisheye.
The extrusion temperature setting of three layers of W＆H equipment is as shown in table 2 below.
Table 2
MDO longitudinal stretchings ratio is that 1.2, MDO temperature is set as shown in Table 3 below.
Table 3
Performance test
Delustring PE films are made in 1-5 of the embodiment of the present invention and carry out performance test, tensile strength, elongation at break according to ISO527-3 is tested.As a result 4 be see the table below.
Table 4
Above-mentioned data are the data of the obtained sample under following extrusion condition：Three extrusion dies, three extrusion diameters Respectively A (corona layer)：70mm；B (intermediate layer)：90mm；C (hot sealing layer) 70mm, L/D=30, die gap=1.25~ 2.25mm, blow-up ratio are 1.5~2.6.
MD：Operating direction, TD：Horizontal direction.
As can be seen from Table 4, delustring PE films produced by the present invention have excellent mechanical performance such as surrender tensile strength, Tensile strength at break, surrender elongation at break, and higher barrier is respectively provided with to oxygen and steam, and have and disappear well Photosensitiveness.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.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 change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims (10)

1. a kind of simple tension can high speed printing delustring PE films, including corona layer, intermediate layer and hot sealing layer, it is characterised in that Corona layer, intermediate layer and hot sealing layer include the bimodal metallocene PE of blown film level independently of one another.
2. delustring PE films according to claim 1, it is characterised in that the blown film level that the corona layer or hot sealing layer include is double The MI of peak metallocene PE is 0.8-1.2g/10min, density 0.915-0.930g/cm under 190 DEG C/5.0kg3；
Preferably, the Vicat softening point for the bimodal metallocene PE of blown film level that the corona layer or hot sealing layer include is 95-110 DEG C, fusing point is 120-130 DEG C.
3. delustring PE films according to claim 1 or 2, it is characterised in that the intermediate layer includes two kinds of different blown films The bimodal metallocene PE of level, the MI of the bimodal metallocene PE of one of which blown film level is 0.2- under 190 DEG C/5.0kg 0.3g/10min, density 0.945-0.960g/cm3；Another MI of the bimodal metallocene PE of blown film level 190 DEG C/ It is 0.8-1.2g/10min, density 0.915-0.930g/cm under 5.0kg3；
Preferably, the intermediate layer includes two kinds of different bimodal metallocene PEs of blown film level, and one of which blown film level is bimodal The Vicat softening point of metallocene PE is 124-135 DEG C, and fusing point is 128-140 DEG C；Another bimodal metallocene of blown film level gathers The Vicat softening point of ethene is 95-110 DEG C, and fusing point is 120-130 DEG C.
4. the delustring PE films according to claim any one of 1-3, it is characterised in that the raw material of the corona layer or hot sealing layer Include FB2230；
Preferably, the raw material of the hot sealing layer also includes slipping agent and/or opening agent；
Preferably, the raw material in the intermediate layer includes FB2230 and FB1520；
Preferably, the raw material in the intermediate layer includes 40-60wt%FB2230 and 40-60wt%FB1520.
5. the delustring PE films according to claim any one of 1-4, it is characterised in that the raw material of the corona layer includes FB2230, the raw material in the intermediate layer include 40-60wt%FB2230 and 40-60 wt%FB1520, the raw material of the hot sealing layer Include FB2230 and a small amount of 10090-K and AB20-LD.
6. the delustring PE films according to claim any one of 1-5, it is characterised in that preferably, corona layer, intermediate layer and heat The thickness ratio of sealing is 1:1-3:0.5-2, preferably 1:2:1.
7. a kind of simple tension described in any one of claim 1-6 can high speed printing delustring PE films production technology, it is special Sign is that the technique is to be coextruded blowing by the raw material of any one of the claim 1-6 corona layers, intermediate layer and hot sealing layer Drawing and forming.
8. production technology according to claim 7, it is characterised in that the production technology uses three layers of W＆H equipment；
Preferably, the filter screen of filter is at least 4 layers in production technology；
Preferably, the filter screen is 20/60/100/20 mesh, and mesh size is about 80 μm.
9. the production technology according to claim 7 or 8, it is characterised in that corona layer, intermediate layer and hot sealing layer during coextrusion Slot type machine barrel extrusion temperature be 50 ± 10 DEG C, preferably 50 ± 5 DEG C；
Preferably, the extrusion temperature in the area of machine barrel 1 of corona layer, intermediate layer and hot sealing layer is 185 ± 10 DEG C during coextrusion, is preferably 185±5℃。
10. according to the production technology described in claim any one of 7-9, it is characterised in that corona layer during coextrusion, intermediate layer and The area of machine barrel 2 of hot sealing layer, the area of machine barrel 3, the area of machine barrel 4, draping area, the extrusion temperature of flange are 190 ± 10 DEG C, preferably 190 ±5℃；
Preferably, the die head temperature in 1st area to 10th area is 194 ± 10 DEG C, preferably 195 ± 5 DEG C during coextrusion.
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CN109177398A (en) * 2018-09-11 2019-01-11 上海福助工业有限公司 Three layers of Coloured film with delustring sense
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CN109648969A (en) * 2018-12-18 2019-04-19 江门市蓬江区华龙包装材料有限公司 A kind of household electrical appliances transparent packaging film
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CN110733217A (en) * 2019-06-27 2020-01-31 常州工业职业技术学院 unidirectional stretching multilayer co-extrusion polyethylene twisted film
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CN113183574A (en) * 2021-04-13 2021-07-30 永新股份（黄山）包装有限公司 Easy-cutting polyethylene label material capable of being printed at high speed and production process thereof
CN113291009A (en) * 2021-04-13 2021-08-24 永新股份（黄山）包装有限公司 Recyclable and reusable toothpaste sheet and production process thereof
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CN108569012A (en) * 2018-03-20 2018-09-25 福建师范大学福清分校 A kind of easily heat-sealing of mill mist type can in print PE films and preparation method
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CN113291009A (en) * 2021-04-13 2021-08-24 永新股份（黄山）包装有限公司 Recyclable and reusable toothpaste sheet and production process thereof
CN113059879A (en) * 2021-04-13 2021-07-02 黄山永新股份有限公司 Extinction polyethylene film suitable for gravure printing and preparation process thereof
CN113334883A (en) * 2021-05-13 2021-09-03 惠州德昉高分子膜材料有限公司 PE film capable of resisting high-temperature steaming at 121 ℃ and preparation method thereof
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