CN107984777A - A kind of liquid food packing multi-layer co-extruded hyaline membrane and its production method - Google Patents
A kind of liquid food packing multi-layer co-extruded hyaline membrane and its production method Download PDFInfo
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- CN107984777A CN107984777A CN201711260511.7A CN201711260511A CN107984777A CN 107984777 A CN107984777 A CN 107984777A CN 201711260511 A CN201711260511 A CN 201711260511A CN 107984777 A CN107984777 A CN 107984777A
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- 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
- 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
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
-
- 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
- B32B2250/24—All layers being polymeric
- B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
-
- 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
- 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
- B32B2307/54—Yield strength; Tensile strength
-
- 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
- B32B2307/71—Resistive to light or to UV
-
- 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
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
-
- 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
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7244—Oxygen barrier
-
- 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
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7246—Water vapor barrier
-
- 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
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
The invention discloses a kind of liquid food packing multi-layer co-extruded hyaline membrane and its production method, belong to packaging for foodstuff technical field of membrane, the film is co-extruded by the multi-layer co-extruded equipment of a variety of raw material, be followed successively by from top to bottom the first PE layers, the 2nd PE layers, the 3rd PE layers, the 4th adhesive phase, the 5th evoh layer, the 6th adhesive phase, the 7th PE layers, the 8th PE layers and the 9th PE layers；The film has the function of different structure, well arranged, one-pass molding, has high-barrier, safeguard function, transparent and low-temperature heat-sealing new packaging material.The production method reduces that leaching is multiple or dry multiple manufacturing procedure, avoid because drench it is multiple and it is dry it is multiple caused by dissolvent residual is exceeded and the problems such as the wasting of resources.It can realize rotation thickness measuring, ultrasonic listening etc., not only increase film strength, while there is good low-temperature heat-sealing performance, can realize fast package, be suitably applied liquid food packing.
Description
Technical field
The invention belongs to packaging for foodstuff technical field of membrane, and in particular to a kind of multi-layer co-extruded hyaline membrane of liquid food packing
And its production method.
Background technology
Packaging refers to protect product in the process of circulation, convenient to store, and promotes sale, is used by certain technical method
The overall title of container, material and adminicle etc..Dairy products are packed, and are exactly using appropriate packaging material, container and packaging skill
Art, fills dairy products, loads or wraps up, so that dairy products are transporting and its value and original shape are kept in storage
State.Finishing operation of the dairy products packing as Dairy Production, is the guarantee of dairy products circulation sale, directly affects the hair of dairy husbandry
Exhibition.
Chinese dairy products industry was gradually grown up in past 10 years, but development speed is to be better than within 1 year 1 year, is disappeared
Expense person has promoted the growing interest of health the development of dairy industry.Early stage is due to refrigerating the imperfection of means, it is necessary to long shelf-life
Packaged form, such as sterile brick and sterilized pillow, but it is fast-developing with the retail market of main cities, and preserving milk is increasingly subject to people
Concern, packaged form also moulds bag, cream jug and roof bag transition to Pasteur.
Liquid food packing is widely used with multi-layer co-extruded hyaline membrane market, is suitably applied liquid food packing, product
With certain transparency, it can directly be seen that the product in packaging, allows consumer to buy clear, trusts.Completely can be with
Conventional composite is substituted, production technology is relatively easy, a coextrusion mold.The packaging film of conventional composite, need to use spy
Different material is formed by biaxial tension has some strength, and the basic film without draftability, then by another procedure
Compound heat-sealable material forms hot sealing layer, and production technology is relative complex.
The content of the invention
In order to overcome the shortcomings of described in background technology, the present invention provides a kind of multi-layer co-extruded hyaline membrane of liquid food packing
It is that different materials are extruded jointly by die head of film blowing machine in the molten state and its production method, this method use co-extrusion technology,
Formation have the function of different structure, it is well arranged, with high-barrier, safeguard function, transparent and low-temperature heat-sealing novel package material
Material.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of multi-layer co-extruded hyaline membrane of liquid food packing, the multi-layer co-extruded hyaline membrane share nine Rotating fields, from
Top to bottm be followed successively by the first PE layers, the 2nd PE layers, the 3rd PE layers, the 4th adhesive phase, the 5th evoh layer, the 6th adhesive phase,
7th PE layers, the 8th PE layers and the 9th PE layers.
The first PE layer thickness is 12-17 μm, the 2nd PE layer thickness is 10-15 μm, the 3rd PE layer thickness is 10-15
μm, the 4th adhesive phase thickness be 4-8 μm, the 5th evoh layer thickness is 4-8 μm, the 6th adhesive phase thickness is 4-8 μm, the 7th
PE layer thickness is 10-15 μm, the 8th PE layer thickness is 10-15 μm, the 9th PE layer thickness is 12-17 μm.According to the different shelf-lifves,
Corresponding barrier layer thickness is set, to make consumer product cost in the case where increasing the shelf-life not increase, while herein
Film under thickness can adapt to the fast package of automatic packaging machine.
Described first PE layers be printing layer, the described 2nd PE layers, the 3rd PE layers, the 7th PE layers and the 8th PE layers be resistance
Interlayer, the 5th evoh layer are high-obstruction, the 9th PE layers be hot sealing layer.
Preferably, the 2nd PE layers of the 2nd PE layers of quality 4%-6% migration anti misting materials of addition, pass through auxiliary material bucket
Weigh, metering screw carries out dosing, is precisely controlled feed quantitative proportion, can prevent to form water droplet, institute in surface of package
PE layers of the 3rd stated, the 7th PE layers be separately added into the 3rd PE layers, the efficient ultraviolet ray-resistant material of the 7th PE layers of quality 2%-4%,
Being weighed by auxiliary material bucket, metering screw carries out dosing, is precisely controlled feed quantitative proportion, for milk pack, low precipitation
And protection membrane material is in itself, can more protect packaged product from the infringement of fluorescent lamp in ultraviolet light in sunlight and storage environment；Institute
The efficacious anti-microbial material of the 8th PE layers of quality 2%-4% is added in PE layers of the 8th stated, is weighed by auxiliary material bucket, metering screw into
Row dosing, is precisely controlled feed quantitative proportion, can effectively inhibit bacteria and be grown on vinyon surface, this material is
With reference to slow migration and high-effect antibacterial characteristics, growth can be effectively inhibited bacteria in entirely the cycle is applied.
Preferably, the anti misting materials are a food-grade PE antifogging master batchs 03841 using Hong Kong Hua friendship, are suitable for
Individual layer and multi-layer co-extruded film, prevent during its effect to form water droplet in packaging film surface, can apply, have in hot-cool environment
There is outstanding transparency, there is provided the visual effect of content satisfaction；Extend packing material shelf life.The efficient uvioresistant wire rod
Material is using efficiently barrier ultraviolet light masterbatch UVS-28HJ, is mainly used for transparent flexible package, can effectively stop all band ultraviolet light,
Can effectively protect packaged product from fluorescent lamp in ultraviolet light in sunlight or storage environment damage, protection product color,
The destruction of smell, fragrance, quality and nutriment, available for individual layer and multi-layer co-extruded film.The efficacious anti-microbial material is
AB-10, can effectively inhibit bacteria the growth in frosting, can improve the color change produced by bacterium factors and smell
Problem.
Preferably, the material that the 4th adhesive phase and the 6th adhesive phase use is maleic anhydride grafted polyethylene
Mix polyethylene.
A kind of production method of the multi-layer co-extruded hyaline membrane of liquid food packing, the production method include following step
Suddenly：
(1) preparation and weighing of raw material：Feed particles are prepared according to the component of multi-layer co-extruded nine Rotating fields of hyaline membrane, are passed through
Feed particles are respectively fed to corresponding loading hopper by material suction device and weighing apparatus；
(2) extruder shearing heating：Nine extruders carry out shearing heating to the feed particles in its loading hopper respectively, obtain
Raw material under to molten condition, and die head is delivered to by interface；Each extruder is provided with five heating regions, successively to original
Material particle is heated；
(3) die head blow extrusion：Nine layers of fused raw material extrusion are merged in the extrusion of circular die, and have inflation film manufacturing machine to blow
Swollen device carries out inflation to film and obtains film bubble；
(4) vane cools down：Hot spot is provided with vane, film bubble is run up under draw, by vane air blast pair
Film bubble is cooled down, and the film bubble thickness data of one week is transferred to the temperature of control system control hot spot according to thickness measurement system
Degree, to adjust the thin and thick deviation of film bubble；Vane is from the outer circumference of film bubble to film bubble quenching, and the air blast on the inside of film bubble
Film bubble can be remained inflated for, be convenient for the operations such as cooling, thickness adjustment；
(5) sizing cage：By the height to sizing cage, the size of the adjustment stable bubble of diameter, to control the width of film bubble
Degree；
(6) draw：Film bubble is gradually crushed by collapser, and a traction iron rod with driving is provided with traction
It is elevated by drawing with a traction dandy roll, film bubble；
(7) rectify a deviation：In traction iron rod and dandy roll centre position is drawn by horizontal deviation-rectifying system control film bubble, easy to receive
It is neat to roll up end face；
(8) cutting burst：Multi-layer co-extruded hyaline membrane by cutter cutting mechanism by film bubble cutting for two panels；
(9) wind：Wound respectively by two Scrolls of A, B, obtain multi-layer co-extruded hyaline membrane, often roll up the control of rice number 3500
Rice.
Preferably, in step (2), nine extruders process the original of the first layer to the 9th layer of multi-layer co-extruded hyaline membrane respectively
Expect particle, the structure of nine extruders is consistent, the feed opening of each extruder, the first heating zone, the second heating zone, the 3rd heating
Area, the 4th heating zone, the temperature of the 5th heating zone and die head are respectively：
First extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
Second extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
3rd extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
4th extruder：50℃、210℃、215℃、215℃、215℃、215℃、215℃；
5th extruder：100℃、220℃、225℃、225℃、225℃、225℃、225℃；
6th extruder：50℃、210℃、215℃、215℃、215℃、215℃、215℃；
7th extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
8th extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
9th extruder：50℃、210℃、215℃、220℃、220℃、220℃、220℃；
Blown-film die temperature：225℃.
First, second and thirdth, raw material relative thickness used in seven, eight extruders is thick, and extrusion capacity is big, sets relatively high temperature
Degree, enables raw material to be plasticized the generation for well, reducing fisheye, and the thin-film transparent produced is good, and film surface is fine and smooth, does not form water
Line；Four, the six extruders are binder resin using raw material, and temperature tolerance is poor, and dosage is few, and long-time high temperature can crack, aging is formed
Stiff block, influences product quality；5th extruder uses barrier material EVOH, its processing temperature determines to need to be arranged to above-mentioned
Temperature setting；9th extruder is hot sealing layer, and material is largely metallocene, it is necessary to set above-mentioned temperature；Die head temperature is set
Putting is set according to the highest temperature of each extruder processing temperature, just ensures all raw material proper flow in die head.
Preferably, in step (4), the hot spot of vane is provided with 48 altogether, and hot spot is evenly distributed on the inside of vane
Face.
It is an advantage of the invention that：The multi-layer co-extruded hyaline membrane of liquid food packing prepared by the present invention, suitable for liquid
Beverage packaging, low-temperature heat-sealing performance are good；Fast package can be achieved, disclosure satisfy that the requirement of the various bottle placers of client.Liquid
Food packaging multi-layer co-extruded hyaline membrane is to use co-extrusion technology, is that different materials are total to by die head of film blowing machine in the molten state
With extrusion one-pass molding, the new packaging material with barriers function is formed.Reduce that leaching is multiple or dry manufacturing procedure again etc., keep away
The problems such as having exempted from the wasting of resources because caused by leaching is multiple or does again, improves production efficiency, reduces production cost, be client
Product has had more competitiveness in market.Liquid food packing has excellent barrier with multi-layer co-extruded hyaline membrane, has at the same time
There is good low-temperature heat-sealing performance, realize fast package.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the structure diagram of extruder used in the present invention；
Fig. 3 is the huffing device structure diagram used in the present invention.
Embodiment
Below in conjunction with attached drawing, the present invention is further illustrated：
Embodiment 1
A kind of production method of the multi-layer co-extruded hyaline membrane of liquid food packing, the production method include following step
Suddenly：
(1) preparation and weighing of raw material：Feed particles are prepared according to the component of multi-layer co-extruded nine Rotating fields of hyaline membrane, are passed through
Feed particles are respectively fed to corresponding loading hopper 10 by material suction device and weighing apparatus；
(2) shearing of extruder 11 heating：Nine extruders 11 respectively shear the feed particles in its loading hopper 10
Heating, obtains the raw material under molten condition, and be delivered to die head 13 by interface；
(3) 13 blow extrusion of die head：Nine layers of fused raw material extrusion are merged in the extrusion of circular die 13, and have blown film
Machine huffing device carries out inflation to film and obtains film bubble 14；
(4) vane 15 cools down：48 hot spots 16 are provided with vane 15, film bubble 14 is run up under draw,
Film bubble 14 is cooled down by 15 air blast of vane, the film bubble thickness data of 14 1 weeks is transferred to by control according to thickness measurement system
System controls the temperature of hot spot 16, to adjust the thin and thick deviation of film bubble 14；
(5) sizing cage 17：By the height to sizing cage 17, the size of the adjustment stable bubble of diameter, to control film bubble
14 width；
(6) draw：Film bubble 14 is gradually crushed by collapser 18, and a traction with driving is provided with traction
Iron rod 19 and a traction dandy roll 20, film bubble 14 are elevated by drawing；
(7) rectify a deviation：In traction iron rod 19 and 20 centre position of dandy roll is drawn by horizontal deviation-rectifying system control film bubble 14,
It is neat easy to wind end face；
(8) cutting burst：Film bubble 14 is cut to the multi-layer co-extruded hyaline membrane for two panels by cutter cutting mechanism；
(9) wind：Wound respectively by two Scrolls of A, B, obtain multi-layer co-extruded hyaline membrane.
In step (2), nine extruders 11 process the raw material of the first layer to the 9th layer of multi-layer co-extruded hyaline membrane respectively
Grain, the structure of nine extruders 11 is consistent, the feed opening 21 of each extruder 11, the first heating zone 22, the second heating zone 23, the
Three heating zones 24, the 4th heating zone 25, the temperature of the 5th heating zone 26 and die head 13 are respectively：
First extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
Second extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
3rd extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
4th extruder：50℃、210℃、215℃、215℃、215℃、215℃、215℃；
5th extruder：100℃、220℃、225℃、225℃、225℃、225℃、225℃；
6th extruder：50℃、210℃、215℃、215℃、215℃、215℃、215℃；
7th extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
8th extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
9th extruder：50℃、210℃、215℃、220℃、220℃、220℃、220℃；
Blown-film die temperature：225℃.
The temperature of above-mentioned each extruder 11 can specifically be adjusted according to actual conditions, it can be ensured that to raw material melt process
Optimum efficiency, and ensure die head extrusion when each raw material optimum temperature, it is ensured that each layer can be bonded effectively, protect
Demonstrate,prove that multi-layer co-extruded sealing strip hierarchical structure is clearly demarcated, while heating for multiple times can also reduce the loss of the energy in batches, reach energy conservation and environmental protection
Purpose.
14 Thickness sensitivity of film bubble, hot spot 16 in the present embodiment heat, the operation of cutting burst and winding, are existing
Mature technology, those of ordinary skill in the art i.e. can be achieved aforesaid operations simultaneously achieve the desired results, be not described herein herein.
Embodiment 2
It is described using a kind of liquid food packing that the preparation method of embodiment 1 is prepared with multi-layer co-extruded hyaline membrane
Multi-layer co-extruded hyaline membrane share nine Rotating fields, be followed successively by the first PE layers 1, the 2nd PE layers 2, the 3rd PE layers the 3, the 4th from top to bottom
Adhesive phase 4, the 5th evoh layer 5, the 6th adhesive phase 6, the 7th PE layers 7, the 8th PE layers 8 and the 9th PE layers 9.
First PE layers, 1 thickness is 13 μm, 2 thickness of the 2nd PE layers is 11 μm, 3 thickness of the 3rd PE layers is 10 μm,
Four adhesive phases, 4 thickness is 4 μm, 5 thickness of the 5th evoh layer is 5 μm, 6 thickness of the 6th adhesive phase is 4 μm, the 7th PE layers 7 are thick
Spend for 10 μm, 8 thickness of the 8th PE layers be 11 μm, 9 thickness of the 9th PE layers be 13 μm.
The first PE layers 1 are printing layer, and pattern printing is carried out through sided corona treatment；The 2nd PE layers 2, the 3rd PE
The 3, the 7th PE layers 7 of layer and the 8th PE layers 8 are barrier layer, and the 5th evoh layer 5 is high-obstruction, has barriers function；9th PE layers 9
For hot sealing layer, there is low-temperature heat-sealing.
The 2nd PE layers 2 add 5% migration anti misting materials of the 2nd 2 mass of PE layers, are weighed by auxiliary material bucket, measure
Screw rod carries out dosing, is precisely controlled feed quantitative proportion, can prevent to form water droplet, the 3rd PE layers 3, the in surface of package
Seven PE layers 7 every layer be separately added into the 3rd PE layers 3, the efficient ultraviolet ray-resistant material of 7 mass 3% of the 7th PE layers, claimed by auxiliary material bucket
Amount, metering screw carries out dosing, is precisely controlled feed quantitative proportion, for milk pack, low precipitation and protection membrane material sheet
Body, can more protect packaged product from the infringement of fluorescent lamp in ultraviolet light in sunlight and storage environment；Added in 8th PE layers 8
The efficacious anti-microbial material of 8th PE layers of quality 3%, is weighed by auxiliary material bucket, and metering screw carries out dosing, be precisely controlled to
Expect quantitative proportion, can effectively inhibit bacteria and be grown on vinyon surface, this material is with reference to slow migration and high-effect
Antibacterial characteristics, growth can be effectively inhibited bacteria in entirely the cycle is applied
The material that 4th adhesive phase 4 and the 6th adhesive phase 6 use mixes for maleic anhydride grafted polyethylene
Polyethylene.
Embodiment 3
First PE layers, 1 thickness is 14 μm, 2 thickness of the 2nd PE layers is 11 μm, 3 thickness of the 3rd PE layers is 11 μm,
Four adhesive phases, 4 thickness is 4 μm, 5 thickness of the 5th evoh layer is 5 μm, 6 thickness of the 6th adhesive phase is 5 μm, the 7th PE layers 7 are thick
Spend for 11 μm, 8 thickness of the 8th PE layers be 11 μm, 9 thickness of the 9th PE layers be 14 μm.
The 2nd PE layers 2 add 6% migration anti misting materials of the 2nd 2 mass of PE layers, the 3rd PE layers 3, the 7th PE layers 7
Every layer is separately added into the 3rd PE layers 3 and the efficient ultraviolet ray-resistant material of 7 mass 4% of the 7th PE layers, and the 8th is added in the 8th PE layers 8
The efficacious anti-microbial material of PE layers of quality 4%.
The material that 4th adhesive phase 4 and the 6th adhesive phase 6 use mixes for maleic anhydride grafted polyethylene
Polyethylene.
Other parts and embodiment 2 are completely the same.
Embodiment 4
First PE layers, 1 thickness is 14 μm, 2 thickness of the 2nd PE layers is 11 μm, 3 thickness of the 3rd PE layers is 11 μm,
Four adhesive phases, 4 thickness is 6 μm, 5 thickness of the 5th evoh layer is 6 μm, 6 thickness of the 6th adhesive phase is 6 μm, the 7th PE layers 7 are thick
Spend for 11 μm, 8 thickness of the 8th PE layers be 11 μm, 9 thickness of the 9th PE layers be 14 μm.
The 2nd PE layers 2 add 5.5% migration anti misting materials of the 2nd 2 mass of PE layers, the 3rd PE layers 3, the 7th PE
7 every layer of layer is separately added into the 3rd PE layers 3 and the efficient ultraviolet ray-resistant material of 7 mass 4.5% of the 7th PE layers, adds in the 8th PE layers 8
Enter the efficacious anti-microbial material of the 8th PE layers of quality 4.5%.
The material that 4th adhesive phase 4 and the 6th adhesive phase 6 use mixes for maleic anhydride grafted polyethylene
Polyethylene.
Other parts and embodiment 2 are completely the same.
Properties of product detect：
Liquid food packing acquired by embodiment 2,3,4 is subjected to properties of product detection with multi-layer co-extruded hyaline membrane, is examined
Survey project includes：Product heat-sealing temperature, tensile property, intensity, elongation at break and product barrier.
Product heat-sealing temperature detection method：105 DEG C of temperature of envelope is played, 130 DEG C of heat-sealing temperature, seals pressure 0.2MPa, heat-sealing
1 second time, standard：Heat seal strength >=12N/15mm.
Tensile property detection standard be《GB/T104.3》, performance detection is carried out using pulling method and cupping machine.
The standard of intensity detection is《GB/T9639.1》, performance detection is carried out using drop-dart impact test machine.
Product barrier detection method：《19789 packaging material plastic films of GB/T close thin slice permeability experiment storehouse
Logical sequence meter detection method》.
Haze detection method foundation《The measure of GB/T 2410-2008 transparent plastics light transmittances and mist degree》, using printing opacity/
Mist degree analyzer is measured.
Standard：Hinder oxygen transit dose≤8cm3/(m2.24h.0.1Mpa), steam penetrating capacity≤5g/m2* 24h, packs breast system
It can guarantee the quality under product room temperature 45 days.
According to《People's Republic of China's the law of food safety》It is required that indices are detected.
Using the performance of the above method and standard detection product, testing result is shown in Table 1, and analysis and arrangement obtains following result：
(1) product heat-sealing temperature meets standard；
(2) tensile property and intensity meet respective standard；
(3) elongation at break detection data fit standard；
(4) barrier, which is detected, meets standard；
(5) every Testing index meets《People's Republic of China's the law of food safety》It is required that.
1 properties of product testing result of table
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
Among the obvious changes or variations that Shen goes out is still in protection scope of the present invention.
Claims (7)
1. the multi-layer co-extruded hyaline membrane of a kind of liquid food packing, it is characterised in that the multi-layer co-extruded hyaline membrane shares nine
Rotating fields, be followed successively by from top to bottom the first PE layers, the 2nd PE layers, the 3rd PE layers, the 4th adhesive phase, the 5th evoh layer, the 6th
Adhesive phase, the 7th PE layers, the 8th PE layers and the 9th PE layers；
The first PE layer thickness is 12-17 μm, the 2nd PE layer thickness is 10-15 μm, the 3rd PE layer thickness is 10-15 μm,
4th adhesive phase thickness is 4-8 μm, the 5th evoh layer thickness is 4-8 μm, the 6th adhesive phase thickness is 4-8 μm, the 7th PE
Layer thickness is 10-15 μm, the 8th PE layer thickness is 10-15 μm, the 9th PE layer thickness is 12-17 μm；
Described first PE layers be printing layer, the described 2nd PE layers, the 3rd PE layers, the 7th PE layers and the 8th PE layers be barrier
Layer, the 5th evoh layer are high-obstruction, the 9th PE layers be hot sealing layer.
A kind of 2. multi-layer co-extruded hyaline membrane of liquid food packing as claimed in claim 1, it is characterised in that described second
Add the migration anti misting materials of the 2nd PE layers of quality 4%-6% in PE layers, the described 3rd PE layers, the 7th PE layers be separately added into
The efficient ultraviolet ray-resistant material of 3rd PE layers and the 7th PE layer quality 2%-4%, the described 8th the 8th PE layers of addition in PE layers
The efficacious anti-microbial material of quality 2%-4%.
3. the multi-layer co-extruded hyaline membrane of a kind of liquid food packing as claimed in claim 2, it is characterised in that described is antifog
Material is food-grade PE antifogging master batchs 03841, and the efficient ultraviolet ray-resistant material is using efficiently barrier ultraviolet light masterbatch
UVS-28HJ, the efficacious anti-microbial material are AB-10.
A kind of 4. multi-layer co-extruded hyaline membrane of liquid food packing as claimed in claim 1, it is characterised in that described the 4th
The material that adhesive phase and the 6th adhesive phase use is grafted mix polyethylene for maleic anhydride.
A kind of 5. liquid food packing production method of multi-layer co-extruded hyaline membrane, it is characterised in that the production method bag
Include following steps：
(1) preparation and weighing of raw material：Feed particles are prepared according to the component of multi-layer co-extruded nine Rotating fields of hyaline membrane, pass through suction
Feed particles are respectively fed to corresponding loading hopper by device and weighing apparatus；
(2) extruder shearing heating：Nine extruders carry out shearing heating to the feed particles in its loading hopper respectively, are melted
Melt the raw material under state, and die head is delivered to by interface；
(3) die head blow extrusion：Nine layers of fused raw material extrusion are merged in the extrusion of circular die, and have inflation film manufacturing machine inflation dress
Put and film bubble is obtained to film progress inflation；
(4) vane cools down：Hot spot is provided with vane, film bubble is run up under draw, by vane air blast to film bubble
Cooled down, the film bubble thickness data of one week be transferred to the temperature of control system control hot spot according to thickness measurement system,
To adjust the thin and thick deviation of film bubble；
(5) sizing cage：By the height to sizing cage, the size of the adjustment stable bubble of diameter, to control the width of film bubble；
(6) draw：Film bubble is gradually crushed by collapser, and a traction iron rod and one with driving is provided with traction
Root draws dandy roll, and film bubble is elevated by drawing；
(7) rectify a deviation：In traction iron rod and dandy roll centre position is drawn by horizontal deviation-rectifying system control film bubble, easy to wind end
Face is neat；
(8) cutting burst：Multi-layer co-extruded hyaline membrane by cutter cutting mechanism by film bubble cutting for two panels；
(9) wind：Wound respectively by two Scrolls of A, B, obtain multi-layer co-extruded hyaline membrane.
A kind of 6. production method of the multi-layer co-extruded hyaline membrane of liquid food packing as claimed in claim 5, it is characterised in that
In step (2), nine extruders process the feed particles of the first layer to the 9th layer of multi-layer co-extruded hyaline membrane, nine extrusions respectively
The structure of machine is consistent, the feed opening of each extruder, the first heating zone, the second heating zone, the 3rd heating zone, the 4th heating zone,
The temperature of 5th heating zone and die head is respectively：
First extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
Second extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
3rd extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
4th extruder：50℃、210℃、215℃、215℃、215℃、215℃、215℃；
5th extruder：100℃、220℃、225℃、225℃、225℃、225℃、225℃；
6th extruder：50℃、210℃、215℃、215℃、215℃、215℃、215℃；
7th extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
8th extruder：50℃、210℃、215℃、218℃、218℃、218℃、218℃；
9th extruder：50℃、210℃、215℃、220℃、220℃、220℃、220℃；
Blown-film die temperature：225℃.
A kind of 7. production method of the multi-layer co-extruded hyaline membrane of liquid food packing as claimed in claim 5, it is characterised in that
In step (4), the hot spot of vane is provided with 48 altogether, and hot spot is evenly distributed in vane medial surface.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109732891A (en) * | 2019-01-03 | 2019-05-10 | 大连大诺印刷包装有限公司 | A kind of production technology of M resin |
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| WO2023226936A1 (en) * | 2022-05-26 | 2023-11-30 | 上海紫江彩印包装有限公司 | Composite sheet for injection packaging, and preparation method therefor and use thereof |
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Application publication date: 20180504 |