CN111376559B - Packaging film, packaging film production line and production process using packaging film production line - Google Patents
Packaging film, packaging film production line and production process using packaging film production line Download PDFInfo
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- CN111376559B CN111376559B CN202010334654.3A CN202010334654A CN111376559B CN 111376559 B CN111376559 B CN 111376559B CN 202010334654 A CN202010334654 A CN 202010334654A CN 111376559 B CN111376559 B CN 111376559B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 56
- 229920006280 packaging film Polymers 0.000 title claims abstract description 31
- 239000012785 packaging film Substances 0.000 title claims abstract description 31
- 239000010410 layer Substances 0.000 claims abstract description 209
- 239000003292 glue Substances 0.000 claims abstract description 115
- 239000002131 composite material Substances 0.000 claims abstract description 100
- 239000004611 light stabiliser Substances 0.000 claims abstract description 82
- 239000012790 adhesive layer Substances 0.000 claims abstract description 53
- 239000011248 coating agent Substances 0.000 claims abstract description 33
- 238000000576 coating method Methods 0.000 claims abstract description 33
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- 230000001070 adhesive effect Effects 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 23
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- 238000000016 photochemical curing Methods 0.000 claims abstract description 12
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- 238000001723 curing Methods 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 16
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- HZDPJHOWPIVWMR-UHFFFAOYSA-N benzyl n-(1-oxo-3-phenylpropan-2-yl)carbamate Chemical compound C=1C=CC=CC=1COC(=O)NC(C=O)CC1=CC=CC=C1 HZDPJHOWPIVWMR-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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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
- 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
- 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
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/286—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysulphones; polysulfides
-
- 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
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
-
- 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
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- 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
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/10—Intaglio printing ; Gravure printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B2037/1253—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives curable adhesive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a packaging film, a packaging film production line and a production process using the packaging film production line. A packaging film comprises a bottom film layer, wherein a pattern layer, a first photosensitive adhesive layer, a light stabilizing layer, a second photosensitive adhesive layer and a porous composite film layer are sequentially formed on the surface of the bottom film layer outwards; the production line of packaging film comprises a gravure device, a first glue blade coating device, a light stabilizer adding device, a second glue blade coating device, a compounding device, a photocuring device and a finished product film winding device. The product has the advantages of strong peeling strength and oxidation resistance and long service life; the production line has the advantages of short production period, continuous production, high productivity, less solvent volatilization and capability of carrying out environment-friendly and pollution-free production; the production process of the invention preheats and pre-crosslinks the photosensitive adhesive, facilitates film lamination and simultaneously improves the product quality.
Description
Technical Field
The invention relates to the field of packaging films, in particular to a packaging film, a packaging film production line and a production process using the packaging film production line.
Background
The food packaging film is prepared from a food packaging film, is used for wrapping the surface of food, and mainly has the functions of isolating and decomposing the entering of microorganism bacteria and external pollutants and preventing and prolonging the deterioration of the food. The commonly selected packaging materials include LDPE, LLDPE, EVA, BOPP, cellulose films, edible films and the like.
Referring to fig. 1, a conventional food packaging film includes an LDPE base film layer 1, and a pattern layer 11 is printed on a surface of the LDPE base film layer 1; the surface of the LDPE bottom film layer 1 is compounded with a glue layer 12; the glue layer 12 is adhered with a PE protective film 13; the production process of the food packaging film comprises the following steps: step 1, printing a required pattern on the surface of an LDPE (Low-Density polyethylene) bottom film layer 1 through a gravure press, and drying to obtain a pattern layer 11; step 2, coating solvent type glue on the PE protective film 13, drying and removing the solvent to form a glue layer 12; and 3, compounding the LDPE bottom film layer 1 printed with the pattern layer 11 in the step 1 with the PE protective film 13 adhered with the glue layer 12, and rolling to obtain the target product.
The LDPE primer layer and the PE protective film are bonded by conventional solvent type glue, organic solvent in the glue needs to be volatilized in the glue layer forming process, certain pollution is caused to the environment, the total production time is prolonged, and the residual organic solvent in the glue is easy to degum under the thermal action, so that the quality of a product on a packaged product is influenced. In conclusion, the prior art has the advantages of low production efficiency, easy environmental pollution in the production process and short service life of the prepared product.
Disclosure of Invention
Aiming at the defects in the prior art, the first purpose of the invention is to provide a packaging film which has strong peeling strength and oxidation resistance and long service life.
The second purpose of the invention is to provide a packaging film production line which has the advantages of short production period, continuous production, high productivity, less solvent volatilization and environmental-friendly and pollution-free production.
The third purpose of the invention is to provide a production process of a production line utilizing the packaging film, which preheats the photosensitive adhesive, facilitates film lamination, improves the lamination efficiency and simultaneously improves the product quality.
In order to achieve the first object, the invention provides the following technical scheme: a packaging film comprises a bottom film layer, a pattern layer formed on the surface of the bottom film layer, and a first photosensitive adhesive layer formed on the surface of the bottom film layer, wherein a light stabilizer layer is formed on the surface of the first photosensitive adhesive layer; a second photosensitive adhesive layer is formed on the surface of the light stabilizer layer; the second photosensitive adhesive layer is compounded with a porous compound film layer for controlling gas exchange.
By adopting the technical scheme, the light stabilizer layer can protect the bottom film layer and the pattern layer, so that the product has good oxidation resistance, and meanwhile, the light stabilizer layer is positioned between the first photosensitive adhesive layer and the second photosensitive adhesive layer, so that the oxidation of the first photosensitive adhesive layer and the second photosensitive adhesive layer can be slowed down, the peeling strength of the product is improved, and the service life of the product is long; the porous composite film layer can prevent water vapor from volatilizing, and keep the packaged food fresh; and gas exchange can be carried out, carbon dioxide is discharged, oxygen is provided, and the aim of keeping freshness is fulfilled.
The invention is further configured to: the porous composite film layer comprises a porous film layer compounded with the second photosensitive adhesive layer and a dense film layer integrally formed on the surface of the porous film layer, and the preparation material of the porous composite film layer is selected from one of polycarbonate and polysulfone.
By adopting the technical scheme, the porous composite film layer prepared from the polycarbonate and the polysulfone by the phase transition method not only can control the gas circulation to play a role in keeping fresh, but also has good heat resistance, can improve the overall heat resistance, improves the heat resistance of the product, and prolongs the service life.
In order to achieve the second object, the invention provides the following technical scheme: a production line of a packaging film comprises a gravure device for printing a pattern layer on the surface of a bottom film layer, and a first glue blade coating device for forming a first light-sensitive glue layer on the surface of a porous composite film layer, wherein the first glue blade coating device is connected with a light stabilizer adding device for forming a light stabilizer layer on the surface of the first light-sensitive glue layer; the light stabilizer adding device is connected with a second glue blade coating device for forming a second photosensitive glue layer on the surface of the light stabilizer layer; the second glue scraping device is connected with a compounding device for compounding the porous composite membrane layer and the bottom membrane layer; the composite device is connected with a light curing device; the light curing device is connected with a finished film winding device; the first glue scraping device and the second glue scraping device are identical in structure.
By adopting the technical scheme, the operation of gravure pattern layer on the bottom film layer by the gravure device can be continuously carried out, the first glue blade coating device can form a first photosensitive adhesive layer by blade coating, the light stabilizer adding device can form a light stabilizing layer, the second glue blade coating device can form a second photosensitive adhesive layer by blade coating, the porous composite film layer and the gravure pattern layer which form the second photosensitive adhesive layer can be continuously carried out by compounding on the bottom film layer in the compounding device, and the whole production efficiency and productivity are ensured; the light stabilizer adding device is adopted to add the light stabilizer layer, so that the production cycle of the production line of the subsequent light curing device is shortened, and the productivity can be further improved; the photosensitive adhesive is used as an adhesive, the cross-linking curing solvent is less volatilized, and the environment-friendly pollution-free production is carried out.
The invention is further configured to: the gravure device includes first unwinding mechanism, printing mechanism, stoving mechanism and winding mechanism, first unwinding mechanism is including opening a book the support, rotate to connect in the basement membrane roller of unwinding the support, a plurality of first adjusting part that sets up and be used for guaranteeing continuous gravure production along basement membrane transmission direction, first adjusting part subassembly includes height-adjustable drives the roller and is used for controlling the cylinder that drives the roller and reciprocate, winding mechanism includes and sets up and is used for guaranteeing the second adjusting part of continuous gravure production along basement membrane transmission direction, the winding support of wind-up roll and be used for fixed wind-up roll, the second adjusting part structure is the same with first adjusting part's structure.
By adopting the technical scheme, the roll shaft for rolling the bottom film layer is fixed on the bottom film roll, firstly enters the first adjusting assembly for uncoiling, then enters the printing mechanism for gravure printing of the required pattern on the bottom film layer, then enters the drying chamber for drying to form the pattern layer, and finally is rolled by the rolling mechanism to obtain a semi-finished product; when the roll shaft with the bottom film layer is required to be replaced, the cylinder controls the driving roller to move downwards to release the stored bottom film layer, the roll shaft with the bottom film layer is replaced in the period, after the roll shaft with the bottom film layer is replaced newly, the cylinder controls the driving roller to move upwards to store the bottom film layer, continuous production can be guaranteed, the roll shaft with the bottom film layer is prevented from being parked and replaced, and production efficiency is improved.
The invention is further configured to: the first glue scraping device comprises a second uncoiling mechanism with the same structure as the first uncoiling mechanism, and a first glue scraping assembly arranged along the transmission direction of the porous composite film layer, wherein the first glue scraping assembly comprises a first shading shell, a lead-in roller, a first transmission roller, a lower compression roller and a lead-out roller which are rotatably connected in the first shading shell along the transmission direction of the porous composite film layer, an upper compression roller which is rotatably connected in the first shading shell and is positioned at the upper part of the lower compression roller, a glue adding assembly and a scraper which are fixedly connected in the first shading shell along the transmission direction of the porous composite film layer, and the glue adding assembly and the scraper are positioned between the lead-in roller and the lower compression roller; the glue adding assembly comprises a glue storage bucket, a light shield sleeved on the glue storage bucket, a glue conveying main pipe communicated with the glue storage bucket, and a plurality of glue dripping pipes arranged along the axial direction of the glue conveying main pipe, and the central axis of the glue conveying main pipe is parallel to the central axis of the first conveying roller; the distance between adjacent glue drip pipes is the same; the glue dropper is vertically towards the surface of the porous composite membrane layer.
By adopting the technical scheme, the roll shaft wound with the porous composite film layer is fixed on the second uncoiling mechanism for uncoiling, and enters the first shading shell through the guide-in roll, the photosensitive adhesive in the glue storage hopper uniformly drops on the surface of the porous composite film layer through the glue dropper, so that the distribution uniformity of the photosensitive adhesive on the surface of the porous composite film layer can be ensured, excessive photosensitive adhesive is prevented from being adhered to the scraper, raw materials are saved, and the production cost is reduced; the porous composite film layer is conveyed by the first conveying roller, the photosensitive adhesive layer is scraped by the scraper, the thickness of the photosensitive adhesive layer is regulated, excessive photosensitive adhesive is prevented from being adhered between the lower pressing roller and the upper pressing roller when the porous composite film layer passes through the lower pressing roller and the upper pressing roller, and raw materials are saved; the porous composite film layer is transmitted through the lower pressing roller and the upper pressing roller, the thickness of the photosensitive adhesive layer is further regulated and controlled, the thickness uniformity of the photosensitive adhesive layer is guaranteed, the adhesion of a light stabilizer and the composite operation of the bottom film layer are facilitated, the product is guaranteed to have good peel strength, and the service life is prolonged.
The invention is further configured to: the light stabilizer adding device comprises a second light-shading shell communicated with the first light-shading shell and the second glue blade coating device, a plurality of second transmission rollers rotatably connected into the second light-shading shell along the transmission direction of the porous composite film layer, and a light stabilizer adding assembly arranged on the second light-shading shell, wherein the light stabilizer adding assembly is positioned on the upper part of the second transmission rollers; the light stabilizer adding assembly comprises a light stabilizer storage container fixedly connected to the top of the second shading shell, a material supplementing pipe fixedly communicated with the top of the light stabilizer storage container, a protective cover in sealing threaded connection with the material supplementing pipe, a vibrator fixedly connected to the side wall of the light stabilizer storage container, a plurality of feeding micropores formed in the bottom of the light stabilizer storage container, and a flow guide piece fixedly connected to the bottom of the light stabilizer storage container and used for guiding the light stabilizer, wherein the vertical distance between the surface of the flow guide piece facing the second conveying roller and the surface of the porous composite film layer is 1.0-5.0 cm.
By adopting the technical scheme, the porous composite film coated with the first photosensitive adhesive layer enters the second shading shell through the transmission of the guide-out roller, and when the porous composite film is transmitted by the second transmission roller, the rare earth metal complex light stabilizer in the light stabilizer storage container is downwards scattered on the surface of the porous composite film coated with the first photosensitive adhesive layer from the feeding micropores under the action of the vibrator to form a light stabilizer layer; the vibrator is arranged to prevent the feeding micropores from being blocked, ensure the amount of the light stabilizer which is scattered on the surface of the porous composite film coated with the first photosensitive adhesive layer in unit time, ensure good antioxidant effect and improve the peeling strength of the product; the flow guide piece prevents the light stabilizer from overflowing and dispersing, and can save the production cost.
The invention is further configured to: the composite device comprises a third shading shell, a third uncoiling mechanism which is arranged on the upper portion of the third shading shell and has the same structure as the first uncoiling mechanism, a preheating shell communicated with the third shading shell and the second shading shell, a heater fixedly connected in the preheating shell, a transmission roller which is rotatably connected in the third shading shell along the transmission direction of the porous composite film layer, a composite roller group, a transmission roller, a transmission shell fixedly connected to the upper surface of the third shading shell, a guide roller which is rotatably connected in the transmission shell along the transmission direction of the bottom film layer, a feeding roller, a conveying roller, a discharging roller and a third ultraviolet lamp fixedly connected in the third shading shell.
By adopting the technical scheme, the third uncoiling mechanism ensures that continuous production can be realized; the heater preheats the surface of the porous composite membrane coated with the second photosensitive adhesive layer and passing through the preheating shell, so that the viscous flow of glue is improved, the photosensitive adhesive layer is smoother, the composite operation is convenient, and the composite efficiency is improved; meanwhile, bubbles in the scrape-coated photosensitive adhesive are removed by preheating, so that the peeling strength of the product is improved, and the quality of the product is improved; the setting of third ultraviolet lamp for porous composite film layer and basement membrane layer pre-crosslinking solidification, the adhesion strength reinforcing prevents that the phenomenon from appearing breaking away from locally, guarantees peel strength between them, promotes the life of product.
The invention is further configured to: the photocuring device comprises a fourth shading shell, a pre-illumination shell communicated with the third shading shell and the fourth shading shell, a plurality of first ultraviolet lamps fixedly connected in the pre-illumination shell, an introducing roller rotatably connected in the fourth shading shell along the transmission direction of the composite film, a conveying roller set, an extracting roller, a plurality of second ultraviolet lamps fixedly connected in the fourth shading shell, an air purifier communicated in the fourth shading shell, and composite fabric conveyed in the conveying roller set in a snake shape.
By adopting the technical scheme, the air purifier is arranged to purify the volatile solvent generated by curing the photosensitive adhesive and protect the working environment; the first ultraviolet lamp of the casing is pre-illuminated, so that the porous composite film layer and the bottom film layer are further crosslinked and cured, the phenomenon that the porous composite film layer and the bottom film layer are separated is not easy to occur when the photosensitive adhesive is transmitted by the conveying roller set, and the quality of a product is ensured.
In order to achieve the third object of the present invention, the present invention provides the following technical solutions: a production process of a production line using a packaging film comprises the following steps: the method comprises the following steps:
step 1: preparing a semi-finished product A, uncoiling a bottom film layer, printing, drying for 10-20min to form a pattern layer, and coiling;
step 2: preparing a semi-finished product B;
step 2.1: uncoiling the porous composite membrane layer, and blade-coating photosensitive adhesive to form a first photosensitive adhesive layer;
step 2.2: spraying light stabilizer on the surface of the first photosensitive adhesive layer through a light stabilizer adding device to form a light stabilizer layer;
step 2.3: the light stabilizer layer is coated with photosensitive adhesive in a blade mode to form a second photosensitive adhesive layer;
step 2.4: preheating the membrane material in the step 2.3 by a heater in a preheating shell, wherein the preheating temperature is 40-60 ℃, and the preheating time is 30-60 s;
By adopting the technical scheme, the photosensitive glue is preheated, the viscous flow of the glue is improved, the photosensitive glue layer is smoother, the composite operation is convenient, and the composite efficiency is improved; and meanwhile, bubbles in the blade-coated photosensitive adhesive are removed by preheating, so that the peeling strength of the product is improved, and the quality of the product is improved.
The invention is further configured to: the step 3 comprises the following steps:
step 3.1: compounding the semi-finished product A and the semi-finished product B under the action of the compounding roller set, irradiating by a third ultraviolet lamp, and performing pre-crosslinking curing to obtain a semi-finished product C;
step 3.2: the semi-finished product C enters a pre-illumination shell, is irradiated for 10-20s by a first ultraviolet lamp, and is further cross-linked and cured to obtain a semi-finished product D;
step 3.3: and (4) completely crosslinking and curing the semi-finished product D in a photocuring device, and rolling to obtain a target product.
By adopting the technical scheme, the step 3.1 is carried out with pre-crosslinking curing, so that the bonding strength of the porous composite membrane layer and the bottom membrane layer is enhanced, the local separation phenomenon is prevented, the peeling strength of the porous composite membrane layer and the bottom membrane layer is ensured, and the service life of the product is prolonged; and 3.2, further crosslinking and curing by irradiation of the first ultraviolet lamp, so that the phenomenon that the porous composite film layer and the bottom film layer are separated difficultly occurs when the photosensitive adhesive is conveyed by the conveying roller set, and the quality of a product is ensured.
In conclusion, the beneficial technical effects of the invention are as follows:
1. through the first photosensitive adhesive layer, the second photosensitive adhesive layer, the bottom film layer, the porous composite film layer and the light stabilizing layer, the product has stronger peeling strength and oxidation resistance, and longer service life
2. The production cycle of the production line of the subsequent photocuring device is shortened and the productivity can be further improved through the gravure device, the first glue blade coating device, the light stabilizer adding device, the second glue blade coating device, the compounding device, the photocuring device and the finished film winding device; the photosensitive adhesive is used as the adhesive, the cross-linking curing solvent is less volatilized, and the environment-friendly pollution-free production is carried out
3. Preparing a semi-finished product A, uncoiling a bottom film layer, printing, drying for 10-20min to form a pattern layer, and coiling; preparing a semi-finished product B; compounding the semi-finished product A and the semi-finished product B under the action of the compounding roller set, irradiating by a third ultraviolet lamp, and performing pre-crosslinking curing to obtain a semi-finished product C; the semi-finished product C enters a pre-illumination shell, is irradiated for 10-20s by a first ultraviolet lamp, and is further cross-linked and cured to obtain a semi-finished product D; and the semi-finished product D is completely crosslinked and cured in the photocuring device, and a target product is obtained by rolling, so that the phenomenon that the porous composite film layer and the bottom film layer are separated is avoided when the photosensitive adhesive is transmitted by the conveying roller set, and the product quality is ensured.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration;
FIG. 2 is a schematic structural diagram of a product according to the present invention;
FIG. 3 is a schematic view of the structure of an embossing apparatus in a production line for producing the product of the present invention according to the second embodiment;
FIG. 4 is a schematic structural diagram of a printing mechanism and a drying mechanism in a production line for preparing products of the present invention according to a second embodiment;
fig. 5 is a schematic view of a local structure in a production line for preparing a product of the present invention in the second embodiment, which mainly shows a connection structure of a first glue blade coating device, a light stabilizer adding device, a second glue blade coating device, a compounding device, a photo-curing device, and a finished film winding device;
FIG. 6 is a schematic structural diagram of a first glue spreading device in a second production line for preparing products of the present invention;
FIG. 7 is a schematic view showing the structure of a light stabilizer adding apparatus in a production line for producing the product of the present invention in this example II;
FIG. 8 is a schematic view showing the structure of a composite apparatus in a production line for producing the product of the present invention according to the second embodiment;
FIG. 9 is a schematic structural diagram of a photocuring apparatus in a production line for producing a product of the present invention according to a second embodiment.
In the figure, 1, LDPE bottom film layer; 11. a pattern layer; 12. a glue layer; 13. PE protective film; 2. a base film layer; 21. a first photosensitive adhesive layer; 22. a second photosensitive adhesive layer; 220. a light stabilizer layer; 23. a porous composite membrane layer; 231. a porous membrane layer; 232. a compact film layer; 3. a gravure printing device; 31. a first unwinding mechanism; 311. uncoiling a support; 312. a bottom film roll; 313. a first adjustment assembly; 314. driving the roller; 315. a cylinder; 3151. erecting a block; 32. a printing mechanism; 321. an ink storage tank; 322. an outer housing; 323. a printing roller; 324. an ink scraper; 325. printing a compression roller; 326. a print lead-in roller; 327. a partition plate; 328. drying the leading-in groove; 329. drying the guide roller; 33. a drying mechanism; 331. a drying chamber; 332. drying the transmission roller; 333. a printing delivery roller; 334. a heating member; 335. a ventilator; 336. drying the driving roller; 34. a winding mechanism; 341. a second adjustment assembly; 342. a wind-up roll; 343. winding a support; 4. a first glue scraping device; 40. a glue adding component; 401. a glue storage hopper; 402. a light shield; 403. a glue conveying main pipe; 404. a glue dropper; 41. a second unwinding mechanism; 42. a first glue scraping and coating assembly; 43. a first light-shielding case; 44. a lead-in roller; 45. a first transfer roller; 46. a lower pressing roller; 47. a delivery roller; 48. an upper compression roller; 49. a scraper; 5. a light stabilizer adding device; 51. a second light-shielding case; 52. a second transfer roller; 53. a light stabilizer addition component; 54. a light stabilizer storage container; 55. a material supplementing pipe; 56. a protective cover; 57. a vibrator; 58. charging micropores; 59. a flow guide member; 6. a second glue scraping device; 7. a compounding device; 71. a third light-shielding case; 72. a third unwinding mechanism; 721. a support frame body; 73. preheating the shell; 731. a heater; 74. a feed roller; 75. a composite roller set; 751. an upper composite press roll; 752. a lower composite steel roller; 76. a delivery roll; 77. a transmission housing; 771. a guide roller; 772. feeding a roller; 773. a conveying roller; 774. discharging the roller; 78. a third ultraviolet lamp; 8. a light-curing device; 81. a fourth light-shielding case; 82. pre-illuminating the shell; 821. a first ultraviolet lamp; 83. introducing a roller; 84. a conveying roller set; 85. a drawing-out roller; 86. a second ultraviolet lamp; 87. an air purifier; 9. finished product membrane coiling mechanism.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples.
The first embodiment is as follows:
referring to fig. 2, the packaging film disclosed by the present invention comprises a bottom film layer 2, a pattern layer 11 is formed on the surface of the bottom film layer 2 by gravure, a first photosensitive adhesive layer 21 located on the upper portion of the pattern layer 11 is formed on the surface of the bottom film layer 2 by blade coating, and a light stabilizer layer 220 for improving oxidation resistance is formed on the surface of the first photosensitive adhesive layer 21; the second photosensitive adhesive layer 22 is formed on the surface of the light stabilizer layer 220; the second photosensitive adhesive layer 22 is compounded with a porous composite film layer 23 for controlling gas exchange. The porous composite film layer 23 comprises a porous film layer 231 compounded with the second photosensitive adhesive layer 22 and a compact film layer 232 integrally formed on the surface of the porous film layer 231, and the porous composite film layer 23 is prepared by a phase transition method, preferably polycarbonate, and can prevent moisture from volatilizing and keep packaged food fresh; can exchange gas, discharge carbon dioxide and provide oxygen to realize the aim of fresh-keeping. The porous composite film layer 23 is made of polycarbonate, so that the heat resistance of the product can be improved, and the food can be better preserved.
Example two:
referring to fig. 3 and 5, a production line of a packaging film comprises a gravure printing device 3 for printing and forming a pattern layer 11 on the surface of a base film layer 2, a first glue blade coating device 4 for forming a first photosensitive adhesive layer 21 on the surface of a porous composite film layer 23, wherein the first glue blade coating device 4 is connected with a light stabilizer adding device 5 for forming a light stabilizer layer 220 on the surface of the first photosensitive adhesive layer 21; the light stabilizer adding device 5 is connected with a second glue blade coating device 6 for forming a second photosensitive glue layer 22 on the surface of the light stabilizer layer 220; the second glue blade coating device 6 is connected with a compounding device 7 for compounding the porous compound film layer 23 and the bottom film layer 2; the composite device 7 is connected with the photocuring device 8, and the photocuring device 8 makes the first photosensitive adhesive layer 21 and the second photosensitive adhesive layer 22 undergo photocrosslinking curing under the catalysis of ultraviolet light, so that the porous composite film layer 23 and the bottom film layer 2 are stably connected, the peeling strength of the porous composite film layer and the bottom film layer is ensured, and the service life of the product is prolonged. The light curing device 8 is connected with a finished film winding device 9; the first glue scraping device 4 is identical to the second glue scraping device 6 in structure.
Referring to fig. 3, the gravure printing apparatus 3 includes a first unwinding mechanism 31, a printing mechanism 32, a drying mechanism 33, and a winding mechanism 34. The first uncoiling mechanism 31 comprises an uncoiling support 311, and a bottom film roller 312 for installing and winding a roller shaft of the bottom film layer 2 is rotatably connected to the uncoiling support 311; along basement membrane layer 2 direction of transfer fixedly connected with be used for guaranteeing the first adjusting part 313 of continuous gravure production, first adjusting part 313 subassembly includes six height-adjustable drive rollers 314, and every drive roller 314 all is connected with and is used for controlling the cylinder 315 that drives roller 314 and reciprocate, and the piston rod of cylinder 315 fixedly connects with erects the piece 3151, drives roller 314 and rotates to be connected on erectting piece 3151.
Referring to fig. 4, the printing mechanism 32 includes an ink tank 321, and an outer housing 322 is fixedly connected to an upper surface of the ink tank 321; a printing roller 323 is rotatably connected in the ink storage tank 321, and the bottom of the printing roller 323 is immersed in the printing ink in the ink storage tank 321; an ink scraper 324 is fixedly connected to the inner wall of the ink storage groove 321; a printing press roller 325 is rotationally connected in the outer shell 322, and the printing press roller 325 is abutted with the printing roller 323; a printing lead-in roller 326 is rotatably connected to the outer shell 322 towards the bottom of the side surface of the first adjusting assembly 313; a partition plate 327 is fixedly connected in the outer shell 322; the partition plate 327 penetrates through the upper and lower surfaces to be provided with a drying lead-in groove 328; the outer housing 322 is rotatably connected with a drying guide-in roller 329 positioned in the drying guide-in groove 328; the drying mechanism 33 comprises a drying chamber 331 formed in the outer shell 322 by the partition plate 327, a drying transmission roller 332 is rotatably connected in the drying chamber 331, and a printing guide-out roller 333 is rotatably connected to the bottom of the side surface of the outer shell 322 facing the first adjusting component 313; a heating member 334, preferably an electric heating plate, is fixedly connected to the top of the drying chamber 331; a ventilation fan 335 communicated with the drying chamber 331 is installed on the side surface of the outer shell 322 facing the first adjusting component 313; the top surface of the outer casing 322 and the side surface of the outer casing 322 facing away from the first adjusting assembly 313 are rotatably connected with a drying driving roller 336 for transmitting the bottom film layer 2 printed with the pattern layer 11, and the bottom film layer 2 printed with the pattern layer 11 transmitted by the drying driving roller 336 is wound by the winding mechanism 34. Referring to fig. 3, the winding mechanism 34 includes a second adjusting assembly 341, a winding roller 342 and a winding support 343 for fixing the winding roller 342, which are disposed along the transfer direction of the base film layer 2 and are used for ensuring continuous gravure production, and the second adjusting assembly 341 has the same structure as the first adjusting assembly 313. The structure of the finished film winding device 9 is the same as that of the winding mechanism 34.
Referring to fig. 5 and fig. 6, the first glue spreading device 4 includes a second unwinding mechanism 41 having the same structure as the first unwinding mechanism 31, and a first glue spreading assembly 42 disposed along the conveying direction of the porous composite membrane layer 23. The first glue spreading assembly 42 and the second glue spreading device 6 are identical in construction. The first glue blade coating assembly 42 comprises a first light shielding shell 43, and a leading-in roller 44, a first transmission roller 45, a lower pressing roller 46 and a leading-out roller 47 which are rotatably connected in the first light shielding shell 43 along the transmission direction of the porous composite film layer 23, wherein the central axis of the leading-in roller 44, the central axis of the first transmission roller 45, the central axis of the lower pressing roller 46 and the central axis of the leading-out roller 47 are parallel, and the plane of the highest position of the leading-in roller 44, the plane of the highest position of the first transmission roller 45, the plane of the highest position of the lower pressing roller 46 and the plane of the highest position of the leading-out roller 47 are all located in the same horizontal plane. An upper press roller 48 positioned on the upper portion of the lower press roller 46 is rotatably connected in the first shading shell 43, a glue adding assembly 40 and a scraper 49 are installed in the first shading shell 43 along the transmission direction of the porous composite membrane layer 23, and the glue adding assembly 40 and the scraper 49 are positioned between the guide-in roller 44 and the lower press roller 46 and positioned on the upper portion of the first transmission roller 45; the perpendicular distance from the doctor blade 49 to the surface of the porous composite membrane layer 23 was 0.4 mm. The glue adding assembly 40 comprises a funnel-shaped glue storage hopper 401, and one end of the glue storage hopper 401 with a larger opening is positioned at the top of the first shading shell 43; a light shield 402 for protecting the photosensitive adhesive is sleeved on the outer wall of one end of the glue storage hopper 401, which is positioned at the top of the first light shield shell 43; the smaller end of the glue storage bucket 401 extends into the first shading shell 43 and is communicated with a glue delivery main pipe 403, the glue delivery main pipe 403 is fixedly communicated with a plurality of glue dripping pipes 404, the glue dripping pipes 404 are axially arranged along the glue delivery main pipe 403, and the distances between the adjacent glue dripping pipes 404 are equal. The central axis of the glue conveying main pipe 403 is parallel to the central axis of the first conveying roller 45; the spacing between adjacent glue drops 404 is the same; the glue dropper 404 is vertically faced to the surface of the porous composite membrane layer 23, and the vertical distance from the dropper of the glue dropper 404 to the surface of the porous composite membrane layer 23 is 10 cm.
Referring to fig. 5 and fig. 7, the light stabilizer adding device 5 includes a second light shielding housing 51 communicating the first light shielding housing 43 and the second glue spreading device 6, two second conveying rollers 52 rotatably connected in the second light shielding housing 51 along the conveying direction of the porous composite membrane layer 23, a light stabilizer adding assembly 53 installed in the second light shielding housing 51, and the light stabilizer adding assembly 53 located on the upper portion of the second conveying rollers 52. The light stabilizer adding component 53 comprises a light stabilizer storage container 54 fixedly connected to the top of the second shading shell 51, wherein the light stabilizer storage container 54 is hollow and stores a powdered rare earth metal complex light stabilizer such as 2, 2-thiobis (4-tert-octylphenol) n-butylamine nickel; the particle size of the rare earth metal complex light stabilizer is 50 mu m. The top of the light stabilizer storage container 54 is fixedly communicated with a material supplementing pipe 55, and the material supplementing pipe 55 is in sealed threaded connection with a protective cover 56; a vibrator 57 is fixedly connected to the side wall of the light stabilizer storage container 54; the bottom of the light stabilizer storage container 54 is provided with a plurality of feeding micropores 58, the diameter of each feeding micropore 58 is 0.5mm, and the density of each feeding micropore 58 is 6.0 to 103/cm2(ii) a The bottom of the light stabilizer storage container 54 is fixedly connected with a flow guide member 59 for guiding the light stabilizer, the flow guide member 59 is fixedly connected to the edge of the bottom of the light stabilizer storage container 54, and the length of the flow guide member 59 is equal to the width of the porous composite membrane layer 23; the perpendicular distance between the surface of the flow guide member 59 facing the second conveying roller 52 and the surface of the porous composite membrane layer 23 is 2.0cm, so that the light stabilizer can be prevented from overflowing and scattering, and unnecessary waste can be avoided.
Referring to fig. 5 in conjunction with fig. 8, the compound device 7 includes a third light-shielding shell 71, and a support frame body 721 is installed on an outer wall of the third light-shielding shell 71; the support frame body 721 is fixedly connected with a third unwinding mechanism 72 which has the same structure as the first unwinding mechanism 31, and the third unwinding mechanism 72 is used for unwinding the base film layer 2 subjected to gravure; the third unwinding mechanism 72 is located at an upper portion of the third light shielding housing 71. The third light shielding housing is fixedly communicated with a preheating housing 73, and the preheating housing 73 makes the third light shielding housing 71 and the second light shielding housing 51 communicated with each other. The heater 731 having the same structure as the heating member 334 is fixedly connected to the inner wall of the top of the preheating housing 73. A feed roller 74, four groups of composite roller sets 75 and a delivery roller 76 are rotatably connected in the third shading shell 71 along the transmission direction of the porous composite membrane layer 23; the composite roll set 75 comprises an upper composite press roll 751 and a lower composite steel roll 752; the upper surface of the third shading shell 71 is fixedly connected with a transmission shell 77 for transmitting the bottom film layer 2 for completing gravure, and a guide roller 771, an inlet roller 772, two conveying rollers 773 and an outlet roller 774 are rotatably connected in the transmission shell 77 along the transmission direction of the bottom film layer 2. In order to prevent the separation between the porous composite film layer 23 and the bottom film layer 2, the third ultraviolet lamp 78 is installed on the top of the inner wall of the third light-shielding shell 71, so that the first photosensitive adhesive layer 21 and the second photosensitive adhesive layer 22 are pre-photo-crosslinked, thereby enhancing the adhesive force between the porous composite film layer 23 and the bottom film layer 2.
Referring to fig. 5 in conjunction with fig. 9, the light curing device 8 includes a fourth light shielding housing 81, and a pre-lighting housing 82 is fixedly connected to the fourth light shielding housing 81, and the pre-lighting housing 82 makes the third light shielding housing 71 and the fourth light shielding housing 81 communicate with each other. A plurality of first ultraviolet lamps 821 are fixedly connected to the bottom of the inner wall of the pre-lighting housing 82, and the distance between adjacent first ultraviolet lamps 821 is equal. A leading-in roller 83, a conveying roller group 84 and a leading-out roller 85 are rotatably connected in the fourth shading shell 81 along the transmission direction of the composite film; the top of the inner wall of the fourth light-shielding shell 81 is fixedly connected with a plurality of second ultraviolet lamps 86, and the distance between every two adjacent second ultraviolet lamps 86 is equal; the fourth light shielding case 81 is communicated with an air cleaner 87, and the air cleaner 87 is installed on the top of the fourth light shielding case 81. The composite fabric enters the third shading shell 71 through the leading-in roller 83, is wound in a snake shape by the conveying roller group 84 for transmission, is fully and completely photocured under the irradiation of the second ultraviolet lamp 86, and is finally transmitted to the finished film winding device 9 through the leading-out roller 85.
Example three:
a production process utilizing a packaging film production line comprises the following steps:
step 1: preparing a semi-finished product A, namely fixing a roll shaft wound with a bottom film layer 2 on a bottom film roll 312, firstly feeding the roll shaft into a first adjusting component 313 for uncoiling, then feeding the roll shaft into a printing mechanism 32 for gravure printing of a required pattern on the bottom film layer 2, then feeding the pattern into a drying chamber 331, drying the pattern for 10min to form a pattern layer 11, and finally winding the pattern layer by a winding mechanism 34 to obtain the semi-finished product A;
step 2: preparing a semi-finished product B;
step 2.1: the roll shaft coiled with the porous composite film layer 23 is fixed on a second uncoiling mechanism 41 for uncoiling, and enters a first shading shell 43 through a guide-in roller 44, the photosensitive adhesive in the glue storage hopper 401 uniformly drops on the surface of the porous composite film layer 23 through a glue dropper 404, the porous composite film layer 23 is scraped by a scraper 49 under the transmission action of a first transmission roller 45, the porous composite film layer 23 is transmitted through a lower pressing roller 46 and an upper pressing roller 48, the thickness of the photosensitive adhesive is further regulated, so that the porous composite film layer 23 forms a first photosensitive adhesive layer 21 with uniform thickness, and a semi-finished product B is obtained1；
Step 2.2: semi-finished product B1Conveyed by the delivery roller 47 into the second shade casing 51, and the semi-finished product B1While being transported by the second transport roller 52, the rare earth metal complex light stabilizer in the light stabilizer storage container 54 is dropped down from the feed-in fine holes 58 to the semi-finished product B by the action of the vibrator 571Forming a light stabilizer layer 220 on the surface to obtain a semi-finished product B2；
Step 2.3: semi-finished product B2Under the action of a second glue scraping and coating device 6, a semi-finished product B2Coating photosensitive adhesive on the surface to form a second photosensitive adhesive layer 22 to obtain a semi-finished product B3；
Step 2.4: semi-finished product B3By preheating the shell 73, under the action of the heater 731, the semi-finished product B in step 2.3 is treated3Preheating at 60 deg.C for 30s to obtain semi-finished product B4；
step 3.1: semi-finished product B4Transferred to the composite roller group 75 in the third light shielding case 71 while the semi-finished product a is unwound by the third unwinding mechanism 72, transferred through the guide roller 771, the feed roller 772, and the conveying roller of the conveying case 77773. A delivery roller 774 to a composite roller group 75 in the third light-shielding shell 71, so that a semi-finished product B3Bonding the semi-finished product A together under the action of the composite roller set 75, and pre-crosslinking under a third ultraviolet lamp 78 to obtain a semi-finished product C;
step 3.2: the semi-finished product C is conveyed into the pre-illumination shell 82 through the delivery-out roller 76, and the semi-finished product C is irradiated for 10 seconds by the first ultraviolet lamp 821 for further crosslinking to obtain a semi-finished product D;
step 3.3: the semi-finished product D is transmitted into the fourth shading shell 81 through the introducing roller 83, the semi-finished product D is transmitted among the conveying roller group 84, the transmission distance of the semi-finished product D among the conveying roller group 84 is long, the semi-finished product D is irradiated for 10min by the second ultraviolet lamp 86, the first photosensitive adhesive layer 21 and the second photosensitive adhesive layer 22 are completely crosslinked and cured, and the target product is obtained through rolling.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (2)
1. A packaging film comprising a base film layer (2) and a pattern layer (11) formed on the surface of the base film layer (2), characterized in that: the film is characterized by further comprising a first photosensitive adhesive layer (21) formed on the surface of the base film layer (2), wherein a light stabilizer layer (220) is formed on the surface of the first photosensitive adhesive layer (21); a second photosensitive adhesive layer (22) is formed on the surface of the light stabilizer layer (220); the second photosensitive adhesive layer (22) is compounded with a porous compound film layer (23) for controlling gas exchange; the porous composite membrane layer (23) comprises a porous membrane layer (231) compounded with the second photosensitive adhesive layer (22) and a dense membrane layer (232) integrally formed on the surface of the porous membrane layer (231), and the preparation material of the porous composite membrane layer (23) is selected from one of polycarbonate and polysulfone; the production line for producing the packaging film comprises a gravure device (3) for printing and forming a pattern layer (11) on the surface of a bottom film layer (2), and a first glue blade coating device (4) for forming a first light-sensitive glue layer (21) on the surface of a porous composite film layer (23), wherein the first glue blade coating device (4) is connected with a light stabilizer adding device (5) for forming a light stabilizer layer (220) on the surface of the first light-sensitive glue layer (21); the light stabilizer adding device (5) is connected with a second glue blade coating device (6) for forming a second photosensitive glue layer (22) on the surface of the light stabilizer layer (220); the second glue blade coating device (6) is connected with a composite device (7) for compounding the porous composite membrane layer (23) and the bottom membrane layer (2); the compound device (7) is connected with a light curing device (8); the light curing device (8) is connected with a finished film winding device (9); the first glue scraping device (4) has the same structure as the second glue scraping device (6); the gravure device (3) comprises a first uncoiling mechanism (31), a printing mechanism (32), a drying mechanism (33) and a coiling mechanism (34), wherein the first uncoiling mechanism (31) comprises an uncoiling support (311), the device comprises a base film roller (312) rotatably connected to an uncoiling support (311), a plurality of first adjusting assemblies (313) which are arranged along the transmission direction of a base film layer (2) and used for guaranteeing continuous gravure production, wherein each first adjusting assembly (313) comprises a driving roller (314) with adjustable height and an air cylinder (315) used for controlling the driving roller (314) to move up and down, a coiling mechanism (34) comprises a second adjusting assembly (341) which is arranged along the transmission direction of the base film layer (2) and used for guaranteeing the continuous gravure production, a coiling roller (342) and a coiling support (343) used for fixing the coiling roller (342), and the structure of the second adjusting assembly (341) is the same as that of the first adjusting assembly (313); the first glue blade coating device (4) comprises a second uncoiling mechanism (41) with the same structure as the first uncoiling mechanism (31), and a first glue blade coating assembly (42) arranged along the transmission direction of the porous composite membrane layer (23), the first glue blade coating assembly (42) comprises a first shading shell (43), a leading-in roller (44) rotatably connected into the first shading shell (43) along the transmission direction of the porous composite film layer (23), a first transmission roller (45), a lower pressing roller (46) and a leading-out roller (47), an upper pressing roller (48) rotatably connected into the first shading shell (43) and positioned on the upper part of the lower pressing roller (46), a glue adding assembly (40) and a scraper (49) fixedly connected into the first shading shell (43) along the transmission direction of the porous composite film layer (23), wherein the glue adding assembly (40) and the scraper (49) are positioned between the leading-in roller (44) and the lower pressing roller (46); the glue adding assembly (40) comprises a glue storage hopper (401), a light shield (402) sleeved on the glue storage hopper (401), a glue conveying main pipe (403) communicated with the glue storage hopper (401), and a plurality of glue dripping pipes (404) axially arranged along the glue conveying main pipe (403), wherein the central axis of the glue conveying main pipe (403) is parallel to the central axis of the first conveying roller (45); the distance between the adjacent glue dripping pipes (404) is the same; the glue dropper (404) vertically faces to the surface of the porous composite membrane layer (23); the light stabilizer adding device (5) comprises a second light-shading shell (51) communicated with the first light-shading shell (43) and the second glue blade coating device (6), a plurality of second transmission rollers (52) rotatably connected into the second light-shading shell (51) along the transmission direction of the porous composite membrane layer (23), and a light stabilizer adding assembly (53) arranged on the second light-shading shell (51), wherein the light stabilizer adding assembly (53) is positioned on the upper part of the second transmission rollers (52); the light stabilizer adding assembly (53) comprises a light stabilizer storage container (54) fixedly connected to the top of the second light shielding shell (51), a material supplementing pipe (55) fixedly communicated with the top of the light stabilizer storage container (54), a protective cover (56) in sealing threaded connection with the material supplementing pipe (55), a vibrator (57) fixedly connected to the side wall of the light stabilizer storage container (54), a plurality of material supplementing micropores (58) formed in the bottom of the light stabilizer storage container (54) and a flow guide member (59) fixedly connected to the bottom of the light stabilizer storage container (54) and used for guiding the light stabilizer, wherein the vertical distance between the surface of the flow guide member (59) facing the second conveying roller (52) and the surface of the porous composite membrane layer (23) is 1.0-5.0 cm; the composite device (7) comprises a third shading shell (71), a third uncoiling mechanism (72) which is arranged at the upper part of the third shading shell (71) and has the same structure with the first uncoiling mechanism (31), a preheating shell (73) communicated with the third shading shell (71) and the second shading shell (51), a heater (731) fixedly connected in the preheating shell (73), a transmission roller (74) rotationally connected in the third shading shell (71) along the transmission direction of the porous composite film layer (23) and a composite roller group (75), a transmission roller (76), a transmission shell (77) fixedly connected with the upper surface of the third shading shell (71), a guide roller (771) rotatably connected in the transmission shell (77) along the transmission direction of the bottom film layer (2), a feeding roller (772), a conveying roller (773), a discharging roller (774) and a third ultraviolet lamp (78) fixedly connected in the third shading shell (71); photocuring device (8) include fourth shading shell (81), communicate in the preliminary irradiation casing (82) of third shading shell (71) and fourth shading shell (81), a plurality of fixed connection are in preliminary irradiation casing (82) first ultraviolet lamp (821), rotate in the direction of transmission of composite film and connect in introduction roller (83) in fourth shading shell (81), carry roller set (84), draw-out roller (85), a plurality of fixed connection are in fourth shading shell (81) second ultraviolet lamp (86), communicate in inside air purifier (87) of fourth shading shell (81), compound surface fabric snakelike conveying in carrying roller set (84).
2. A process for producing the packaging film according to claim 1, wherein: the method comprises the following steps:
step 1: preparing a semi-finished product A, namely uncoiling, printing and drying the bottom film layer (2) for 10-20min to form a pattern layer (11), and coiling;
step 2: preparing a semi-finished product B;
step 2.1: the porous composite film layer (23) is uncoiled and coated with photosensitive adhesive in a blade mode to form a first photosensitive adhesive layer (21);
step 2.2: the surface of the first photosensitive adhesive layer (21) is sprayed with light stabilizer adding device (5) for light stabilization to form a light stabilizer layer (220);
step 2.3: the light stabilizer layer (220) is coated with the photosensitive adhesive in a blade mode to form a second photosensitive adhesive layer (22);
step 2.4: preheating the membrane material in the step 2.3 by a heater (731) in a preheating shell (73), wherein the preheating temperature is 40-60 ℃, and the preheating time is 30-60 s;
step 3; compounding the semi-finished product A and the semi-finished product B to prepare a target product;
step 3.1: compounding the semi-finished product A and the semi-finished product B under the action of a compounding roller set (75), irradiating by a third ultraviolet lamp (78), and performing pre-crosslinking curing to obtain a semi-finished product C;
step 3.2: the semi-finished product C enters a pre-illumination shell (82), a first ultraviolet lamp (821) irradiates for 10-20s, and further crosslinking and curing are carried out to obtain a semi-finished product D;
step 3.3: and (4) completely crosslinking and curing the semi-finished product D in a photocuring device (8), and rolling to obtain a target product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP2542790B2 (en) * | 1993-10-15 | 1996-10-09 | 清二 加川 | Porous film manufacturing equipment |
| JP2006036310A (en) * | 2004-07-29 | 2006-02-09 | Toyo Aluminium Kk | Packaging material and package |
| CN101117033B (en) * | 2007-09-19 | 2010-09-01 | 甘国工 | Light-solidifying binding agent compounded multiaspect drag-resisting compound film and method for producing the same |
| CN104044328B (en) * | 2014-06-23 | 2017-04-12 | 无锡市华泰医药包装有限公司 | Three-layer aluminum-plastic film compounding equipment and three-layer aluminum-plastic film compounding process |
| CN105881905A (en) * | 2016-04-28 | 2016-08-24 | 苏州艾泰普机械有限公司 | Automatic conveying device for 3D printer powder material |
| CN205970031U (en) * | 2016-09-07 | 2017-02-22 | 福建惠亿美环保材料科技有限公司 | Complex film extrusion line of rolling does not shut down |
| CN108688251A (en) * | 2018-06-15 | 2018-10-23 | 浙江时进包装有限公司 | A kind of novel tasteless freezing barrier beefsteak bag |
| CN108787311A (en) * | 2018-06-20 | 2018-11-13 | 福建省铭兴激光科技有限公司 | A kind of UV photocuring films multipoint mode injecting glue coating waste water device |
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Denomination of invention: A production line for packaging film and packaging film, and a production process utilizing the production line Effective date of registration: 20231221 Granted publication date: 20210917 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Jiaxing Haining sub branch Pledgor: Haining Karol packaging materials Co.,Ltd. Registration number: Y2023980072639 |
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