CN106113854A - A kind of milk product packaging film and production method thereof - Google Patents
A kind of milk product packaging film and production method thereof Download PDFInfo
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- CN106113854A CN106113854A CN201610485373.1A CN201610485373A CN106113854A CN 106113854 A CN106113854 A CN 106113854A CN 201610485373 A CN201610485373 A CN 201610485373A CN 106113854 A CN106113854 A CN 106113854A
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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
- B29C48/16—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
-
- 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
- B32B27/06—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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
-
- 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
- B32B43/00—Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor
- B32B43/003—Cutting
-
- 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
- B32B7/10—Interconnection of layers at least one layer having inter-reactive 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
- 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
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- 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
- B32B2439/70—Food packaging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
The invention discloses a kind of milk product packaging film and production method thereof, belong to food package film production technical field.Described packaging film has seven-layer structure, is followed successively by from top to bottom: a PE layer, the 2nd PE layer, the 3rd adhesive layer, the 4th evoh layer, the 5th adhesive layer, the 6th PE layer and the 7th PE layer；The milk product packaging film that the present invention produces uses new raw material, has excellent barrier, does not contains color masterbatch in extending the shelf life of product, thin film, eliminates color masterbatch and contacts with the direct of food, it is ensured that the safety of food.And this milk product packaging film have different structure, well arranged, there is barriers function, production technology is simple, and a coextrusion mold has preferable low-temperature heat-sealing performance simultaneously, walks machine steady, can realize fast package.
Description
Technical field
The invention belongs to food package film production technical field, be specifically related to a kind of milk product packaging film and producer thereof
Method.
Background technology
Packaging refers to protect product, convenient storage in the process of circulation, promotes to sell, adopts by certain technical method
The overall title of container, material and adminicle etc..Milk product is packed, it is simply that use suitable packaging material, container and bag
Packing technique, fills milk product, loads or wraps up so that milk product transport and storage in keep its be worth and
Original state.Dairy products packing, as the finishing operation of Dairy Production, is the guarantee of milk circulation sale, directly affects milk
The development of industry.
China's milk product industry is gradually to grow up in past 10 years, but development speed is within 1 year, to be better than 1 year, disappears
Expense person has promoted the development of dairy industry to healthy growing interest.In early days due to the imperfection of cold preservation means, need long shelf-life
Packaged form, such as sterile brick and sterilized pillow etc., but along with the retail market of main cities is fast-developing, preserving milk is increasingly subject to people
Concern, packaged form also moulds bag, cream jug and roof bag transition to Pasteur.
Traditional milk product packaging film has three layers, and color masterbatch is placed on internal layer, direct and Food Contact, it is impossible to ensure food
Safety.And traditional production technology is simple, and draftability and intensity are poor.The present invention uses new raw material, utilizes multilamellar altogether
The equipment of squeezing, produces Different Results, well arranged, has preferable low-temperature heat-sealing performance, walks machine steady, can realize Fast Packet
Dress.
Summary of the invention
In order to overcome the deficiency described in background technology, the present invention provides a kind of milk product packaging film and production method thereof, should
Invention changes tradition trilamellar membrane structure, uses new raw material and multi-layer co-extruded equipment to produce, has excellent barrier, prolong
The shelf life of long products, film internal layer does not contains color masterbatch, it is to avoid color masterbatch directly contacts with food, it is ensured that the peace of food
Quan Xing.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of milk product packaging film, total seven-layer structure, it is followed successively by from top to bottom: a PE layer, the 2nd PE layer, the 3rd bonding
Layer, the 4th evoh layer, the 5th adhesive layer, the 6th PE layer and the 7th PE layer；
The thickness of the oneth PE layer is 17 μm, and the thickness of the 2nd PE layer is 16 ~ 17 μm, and the 3rd bondline thickness is 4 ~ 8 μm, the 4th
The thickness of evoh layer is 4 ~ 8 μm, and the 5th bondline thickness is 4 ~ 8 μm, and the 6th PE layer thickness is 16 ~ 17 μm, the 7th PE layer thickness
It is 17 μm.
Oneth PE layer is printing layer, and the 2nd PE layer is auxiliary layer, and the 3rd adhesive layer and the 5th adhesive layer are adhesive layer, the 4th
Evoh layer is barrier layer, and the 6th PE layer is shading layer, and the 7th PE layer is hot sealing layer.
Preferably, a PE layer and the 2nd PE layer are white, and the 6th PE layer is black, by arranging multilamellar black and white film, reaches
Purpose to delustring, it is to avoid sunlight and the Food Contact within packaging film.
A kind of milk product packaging film production method, the step of this production method is:
(1) preparation of raw material and weighing: prepare feed particles according to the component of milk product packaging film seven-layer structure, pass through material suction device
With the loading hopper that feed particles is respectively fed to correspondence by weighing apparatus；
(2) heating sheared by extruder: the feed particles in its loading hopper is carried out shearing heating by seven extruders respectively, is melted
Melt the raw material under state, and be delivered to die head by interface；Each extruder is provided with five heating regions, successively to raw material
Grain heats；
(3) die head blow extrusion: seven layers of fused raw material extrusion are merged by the extrusion in circular die, and have inflation film manufacturing machine inflation to fill
Put and thin film is carried out inflation obtain film bubble；
(4) vane cooling: being provided with hot spot on vane, film bubble runs up under draw, by vane air blast to film bubble
Cool down, according to thickness measurement system, the film bubble thickness data of a week be transferred to control system and control the temperature of hot spot,
To adjust the thin and thick deviation of film bubble；Vane from the outer circumference of film bubble to film bubble quenching, and the air blast energy inside film bubble
Film bubble is enough made to remain inflated for, it is simple to carry out cooling down, the operation such as thickness adjustment；
(5) sizing cage: by the height of sizing cage, the size of the adjustment stable bubble of diameter, to control the width of film bubble；
(6) traction: film bubble is gradually crushed through collapser, is provided with one with the traction iron rod and driven at traction
Root traction dandy roll, film bubble is elevated by traction；
(7) correction: control film bubble in traction iron rod and traction dandy roll centre position through horizontal deviation-rectifying system, it is simple to rolling end
Face is neat；
(8) cut open cutter cutting burst: film bubble cut by cutting knife cutting mechanism, obtain milk product packaging film；
(9) rolling: by A, B two Scrolls rolling respectively, obtain milk product packaging film.
Preferably, former to layer 7 of the ground floor of the modified milk goods packaging films respectively of seven extruders in step (2)
Material granule；The structure of seven extruders is consistent, the feed opening of each extruder, first thermal treatment zone, second thermal treatment zone, the 3rd heating
The temperature of district, the 4th thermal treatment zone, the 5th thermal treatment zone and die head is respectively:
First extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
Second extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
3rd extruder: 50 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
4th extruder: 100 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 225 DEG C,
5th extruder: 50 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
6th extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
7th extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
Blown-film die temperature: 225 DEG C.
Preferably, in step (4), the hot spot of vane is provided with 48 altogether, and hot spot is evenly distributed in inside vane
Face.
The temperature of each extruder above-mentioned specifically can adjust according to practical situation, it can be ensured that processes raw materials melt
Optimum efficiency, and ensure the optimum temperature of each raw material when film head is extruded, it is ensured that each layer can effectively bond, it is ensured that
Packaging film hierarchical structure is clearly demarcated, and heating for multiple times also can reduce the loss of the energy the most in batches, reaches the purpose of energy-conserving and environment-protective.
The invention have the advantage that the milk product packaging film that the present invention produces uses new raw material, there is excellent resistance
Every property, in extending the shelf life of product, thin film, do not contain color masterbatch, eliminate color masterbatch and contact with the direct of food, it is ensured that food
The safety of product.And this milk product packaging film have different structure, well arranged, there is barriers function, production technology is simple, one
Secondary coextrusion mold, has preferable low-temperature heat-sealing performance simultaneously, can realize fast package.
Accompanying drawing explanation
Fig. 1 is the structural representation of packaging film of the present invention；
Fig. 2 is the structural representation of the extruder used by the present invention；
Fig. 3 is the huffing device structural representation used by the present invention.
Symbol description in figure: 1, a PE layer；2, the 2nd PE layer；3, the 3rd adhesive layer；4, the 4th evoh layer；5, the 5th glues
Close layer；6, the 6th PE layer；7, the 7th PE layer；8, loading hopper；9, extruder；10, die head；11, film bubble；12, vane；13, heating
Point；14, sizing cage；15, collapser；16, traction iron rod；17, traction dandy roll；18, feed opening；19, first thermal treatment zone；20、
Second thermal treatment zone；21, the 3rd thermal treatment zone；22, the 4th thermal treatment zone；23, the 5th thermal treatment zone.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Embodiment 1
A kind of milk product packaging film production method, the step of this production method is:
(1) preparation of raw material and weighing: prepare feed particles according to the component of milk product packaging film seven-layer structure, pass through material suction device
With the loading hopper 8 that feed particles is respectively fed to correspondence by weighing apparatus；
(2) heating sheared by extruder 9: the feed particles in its loading hopper 8 is carried out shearing heating by seven extruders 9 respectively, and seven
The first of individual extruder 9 processing and packing film respectively, to the feed particles of layer 7, obtains the raw material under molten condition, and by connecing
Mouth is delivered to die head 10；Each extruder 9 is provided with five heating regions, heats feed particles successively；
(3) die head 10 blow extrusion: seven layers of fused raw material extrusion are merged by the extrusion in circular die 10, and have inflation film manufacturing machine to blow
Swollen device carries out inflation to thin film and obtains film bubble 11；
(4) vane 12 cools down: be provided with hot spot 13 on vane 12, and film bubble 11 runs up under draw, by vane 12
Film bubble 11 is cooled down by air blast, according to thickness measurement system, the film bubble thickness data of 11 1 weeks is transferred to control system control
The temperature of hot spot 13, to adjust the thin and thick deviation of film bubble 11；Vane 12 is dried cold from the outer circumference of film bubble 11 to film bubble 11
But, the air blast and inside film bubble 11 can make film bubble 11 remain inflated for, it is simple to carries out cooling down, the operation such as thickness adjustment；
(5) sizing cage 14: by the height of sizing cage 14, the size of the adjustment stable bubble 11 of diameter, to control film bubble 11
Width；
(6) traction: film bubble 11 is gradually crushed through collapser 15, is provided with one with the traction iron rod driven at traction
16 and one traction dandy roll 17, film bubble 11 by traction elevated；
(7) correction: control film bubble 11 in traction iron rod 16 and traction dandy roll 17 centre position through horizontal deviation-rectifying system, it is simple to
Rolling end face is neat；
(8) cut open cutter cutting burst: film bubble 11 cut by cutting knife cutting mechanism, obtain milk product packaging film；
(9) rolling: by A, B two Scrolls rolling respectively, obtain milk product packaging film.
The ground floor feed particles to layer 7 of modified milk goods packaging films distinguished by seven extruders 9 in step (2)；
The structure of seven extruders 9 is consistent, 19, second thermal treatment zone 20, feed opening 18, first thermal treatment zone of each extruder 9, Acanthopanan trifoliatus (L.) Merr.
The temperature of the thermal treatment zone 23, the thermal treatment zone the 22, the 5th, hot-zone the 21, the 4th and die head 10 is respectively:
First extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
Second extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
3rd extruder: 50 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
4th extruder: 100 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 225 DEG C,
5th extruder: 50 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
6th extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
7th extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
Blown-film die temperature: 225 DEG C.
The temperature of each extruder 9 above-mentioned specifically can adjust according to practical situation, it can be ensured that processes raw materials melt
Optimum efficiency, and ensure the optimum temperature of each raw material when film head 10 is extruded, it is ensured that each layer can effectively bond,
Ensureing that packaging film hierarchical structure is clearly demarcated, heating for multiple times also can reduce the loss of the energy the most in batches, reaches the purpose of energy-conserving and environment-protective.
Film bubble 11 Thickness sensitivity in the present embodiment, hot spot 13 heat, cutting burst and the operation of rolling, are existing
Mature technology, those of ordinary skill in the art can realize aforesaid operations and produce a desired effect, being not described herein at this.
Embodiment 2
Use the milk product packaging film that the preparation method of embodiment 1 is prepared, total seven-layer structure, be followed successively by from top to bottom: the
One PE layer the 1, the 2nd PE layer the 2, the 3rd adhesive layer the 3, the 4th evoh layer the 4, the 5th adhesive layer the 5, the 6th PE layer 6 and the 7th PE layer 7；
The thickness of the oneth PE layer 1 is 17 μm, and the thickness of the 2nd PE layer 2 is 16 μm, and the 3rd adhesive layer 3 thickness is 4 μm, the 4th EVOH
The thickness of layer 4 is 4 μm, and the 5th adhesive layer 5 thickness is 4 μm, and the 6th PE layer 6 thickness is 16 μm, and the 7th PE layer 7 thickness is 17 μm.
Oneth PE layer 1 is printing layer, and the 2nd PE layer 2 is auxiliary layer, and the 3rd adhesive layer 3 and the 5th adhesive layer 5 are adhesive layer,
4th evoh layer 4 is barrier layer, and the 6th PE layer 6 is shading layer, and the 7th PE layer 7 is hot sealing layer.
Oneth PE layer 1 and the 2nd PE layer 2 are white, and the 6th PE layer 6 is black.
Embodiment 3
Use the milk product packaging film that the preparation method of embodiment 1 is prepared, total seven-layer structure, be followed successively by from top to bottom: the
One PE layer the 1, the 2nd PE layer the 2, the 3rd adhesive layer the 3, the 4th evoh layer the 4, the 5th adhesive layer the 5, the 6th PE layer 6 and the 7th PE layer 7；
The thickness of the oneth PE layer 1 is 17 μm, and the thickness of the 2nd PE layer 2 is 17 μm, and the 3rd adhesive layer 3 thickness is 8 μm, the 4th EVOH
The thickness of layer 4 is 8 μm, and the 5th adhesive layer 5 thickness is 8 μm, and the 6th PE layer 6 thickness is 17 μm, and the 7th PE layer 7 thickness is 17 μm.
Other parts are completely the same with embodiment 2.
Embodiment 4
Use the milk product packaging film that the preparation method of embodiment 1 is prepared, total seven-layer structure, be followed successively by from top to bottom: the
One PE layer the 1, the 2nd PE layer the 2, the 3rd adhesive layer the 3, the 4th evoh layer the 4, the 5th adhesive layer the 5, the 6th PE layer 6 and the 7th PE layer 7；
The thickness of the oneth PE layer 1 is 17 μm, and the 2nd PE layer 2 thickness is 16 μm, and the 3rd adhesive layer 3 thickness is 6 μm, the 4th evoh layer
The thickness of 4 is 6 μm, and the 5th adhesive layer 5 thickness is 6 μm, and the 6th PE layer 6 thickness is 17 μm, and the 7th PE layer 7 thickness is 17 μm.
Other parts are completely the same with embodiment 2.
Properties of product detect:
Packaging film acquired by embodiment 2,3,4 is carried out properties of product detection, and detection project includes: heat seal strength, barrier
Energy, moisture-vapor transmission and light transmittance.
Heat seal strength detection method: use heat sealing tester test, rises and seals temperature: 105 DEG C, heat-sealing temperature: 125 DEG C, heat
Seal pressure: 0.2 MPa, seals the time: 1 second, detect the intensity after heat-sealing.The standard of intensity detection is " GB/T9639.1 ", adopts
Performance detection is carried out with cupping machine.
Oxygen barrier property uses pressure differential method and pressure differential gas permeameter to carry out performance detection.
Moisture-vapor transmission uses the detection of moisture-vapor transmission detector, standard: moisture-vapor transmission≤10g/m2*24h。
Light transmittance uses light transmittance detector detection, standard: light transmittance≤2%.
Using said method and the performance of standard detection product, each product has carried out four inspections in an individual event detection
Surveying, testing result is shown in Table 1.As it can be seen from table 1 the milk product packaging film that the present invention prepares has splendid oxygen barrier property,
Moisture-vapor transmission and light transmittance are relatively low, and heat seal strength is high, meets use demand.
Table 1 properties of product testing result
Last it is noted that obvious, above-described embodiment is only for clearly demonstrating example of the present invention, and the most right
The restriction of embodiment.For those of ordinary skill in the field, can also be made it on the basis of the above description
The change of its multi-form or variation.Here without also cannot all of embodiment be given exhaustive.And thus amplified out
Obvious change or variation still in protection scope of the present invention among.
Claims (6)
1. a milk product packaging film, it is characterised in that described packaging film has seven-layer structure, is followed successively by from top to bottom: the
One PE layer, the 2nd PE layer, the 3rd adhesive layer, the 4th evoh layer, the 5th adhesive layer, the 6th PE layer and the 7th PE layer；
The thickness of the oneth PE layer is 17 μm, and the thickness of the 2nd PE layer is 16 ~ 17 μm, and the 3rd bondline thickness is 4 ~ 8 μm, the 4th
The thickness of evoh layer is 4 ~ 8 μm, and the 5th bondline thickness is 4 ~ 8 μm, and the 6th PE layer thickness is 16 ~ 17 μm, the 7th PE layer thickness
It is 17 μm.
2. a kind of milk product packaging film as claimed in claim 1, it is characterised in that a described PE layer is printing layer, the
Two PE layers are auxiliary layer, and the 3rd adhesive layer and the 5th adhesive layer are adhesive layer, and the 4th evoh layer is barrier layer, and the 6th PE layer is resistance
Photosphere, the 7th PE layer is hot sealing layer.
3. a kind of milk product packaging film as claimed in claim 1, it is characterised in that a described PE layer and the 2nd PE layer are
White, the 6th PE layer is black.
4. a milk product packaging film production method, it is characterised in that the step of this production method is:
(1) preparation of raw material and weighing: prepare feed particles according to the component of milk product packaging film seven-layer structure, pass through material suction device
With the loading hopper that feed particles is respectively fed to correspondence by weighing apparatus；
(2) heating sheared by extruder: the feed particles in its loading hopper is carried out shearing heating by seven extruders respectively, is melted
Melt the raw material under state, and be delivered to die head by interface；
(3) die head blow extrusion: seven layers of fused raw material extrusion are merged by the extrusion in circular die, and have inflation film manufacturing machine inflation to fill
Put and thin film is carried out inflation obtain film bubble；
(4) vane cooling: being provided with hot spot on vane, film bubble runs up under draw, by vane air blast to film bubble
Cool down, according to thickness measurement system, the film bubble thickness data of a week be transferred to control system and control the temperature of hot spot,
To adjust the thin and thick deviation of film bubble；
(5) sizing cage: by the height of sizing cage, the size of the adjustment stable bubble of diameter, to control the width of film bubble；
(6) traction: film bubble is gradually crushed through collapser, is provided with one with the traction iron rod and driven at traction
Root traction dandy roll, film bubble is elevated by traction；
(7) correction: control film bubble in traction iron rod and traction dandy roll centre position through horizontal deviation-rectifying system, it is simple to rolling end
Face is neat；
(8) cut open cutter cutting burst: film bubble cut by cutting knife cutting mechanism, obtain milk product packaging film；
(9) rolling: by A, B two Scrolls rolling respectively, obtain milk product packaging film.
5. a kind of milk product packaging film production method as claimed in claim 4, it is characterised in that seven in step (2) squeeze
Go out the ground floor feed particles to layer 7 of machine modified milk goods packaging film respectively；The structure of seven extruders is consistent, each
The feed opening of extruder, first thermal treatment zone, second thermal treatment zone, the 3rd thermal treatment zone, the 4th thermal treatment zone, the 5th thermal treatment zone and die head
Temperature is respectively:
First extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
Second extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
3rd extruder: 50 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
4th extruder: 100 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 225 DEG C, 225 DEG C,
5th extruder: 50 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
6th extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
7th extruder: 55 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C, 215 DEG C,
Blown-film die temperature: 225 DEG C.
6. a kind of milk product packaging film production method as claimed in claim 5, it is characterised in that in step (4), vane adds
Focus is provided with 48 altogether, and hot spot is evenly distributed in vane medial surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610485373.1A CN106113854A (en) | 2016-06-28 | 2016-06-28 | A kind of milk product packaging film and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107984777A (en) * | 2017-12-04 | 2018-05-04 | 朝阳佛瑞达科技有限公司 | A kind of liquid food packing multi-layer co-extruded hyaline membrane and its production method |
| CN110901193A (en) * | 2019-12-03 | 2020-03-24 | 江阴升辉包装材料有限公司 | Pure water packaging film convenient to recycle and crosslinking treatment method thereof |
| CN113290896A (en) * | 2021-06-09 | 2021-08-24 | 昆山品丰包装材料有限公司 | Production method suitable for electronic product packaging film |
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| US20050158530A1 (en) * | 2002-01-18 | 2005-07-21 | Werner Trautwein | Composite material for light-, gas- and liquid-tight heat-sealing packagings |
| CN101100123A (en) * | 2006-07-06 | 2008-01-09 | 郭瑞林 | Seven-layer co-extrusion high-isolating packaging film |
| CN201105860Y (en) * | 2007-11-20 | 2008-08-27 | 吉林省农业机械研究院 | Novel fresh meat thermal shrinkage keeping-fresh bag film |
| CN104476753A (en) * | 2014-11-25 | 2015-04-01 | 朝阳佛瑞达科技有限公司 | Multilayer co-extrusion high-barrier film and preparation method thereof |
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| US20050158530A1 (en) * | 2002-01-18 | 2005-07-21 | Werner Trautwein | Composite material for light-, gas- and liquid-tight heat-sealing packagings |
| CN101100123A (en) * | 2006-07-06 | 2008-01-09 | 郭瑞林 | Seven-layer co-extrusion high-isolating packaging film |
| CN201105860Y (en) * | 2007-11-20 | 2008-08-27 | 吉林省农业机械研究院 | Novel fresh meat thermal shrinkage keeping-fresh bag film |
| CN104476753A (en) * | 2014-11-25 | 2015-04-01 | 朝阳佛瑞达科技有限公司 | Multilayer co-extrusion high-barrier film and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107984777A (en) * | 2017-12-04 | 2018-05-04 | 朝阳佛瑞达科技有限公司 | A kind of liquid food packing multi-layer co-extruded hyaline membrane and its production method |
| CN110901193A (en) * | 2019-12-03 | 2020-03-24 | 江阴升辉包装材料有限公司 | Pure water packaging film convenient to recycle and crosslinking treatment method thereof |
| CN113290896A (en) * | 2021-06-09 | 2021-08-24 | 昆山品丰包装材料有限公司 | Production method suitable for electronic product packaging film |
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Application publication date: 20161116 |