CN112519366A - Biaxially oriented polypropylene low-density polyethylene medical composite film bag - Google Patents
Biaxially oriented polypropylene low-density polyethylene medical composite film bag Download PDFInfo
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- CN112519366A CN112519366A CN202011380197.8A CN202011380197A CN112519366A CN 112519366 A CN112519366 A CN 112519366A CN 202011380197 A CN202011380197 A CN 202011380197A CN 112519366 A CN112519366 A CN 112519366A
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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
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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
- B32B27/06—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
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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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
- 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
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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
- B32B38/00—Ancillary operations in connection with laminating processes
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/14—Printing or colouring
- B32B38/145—Printing
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/162—Cleaning
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0076—Curing, vulcanising, cross-linking
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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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/412—Transparent
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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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
- B32B2439/00—Containers; Receptacles
- B32B2439/02—Open containers
- B32B2439/06—Bags, sacks, sachets
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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
- B32B2439/00—Containers; Receptacles
- B32B2439/80—Medical packaging
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- Laminated Bodies (AREA)
Abstract
The invention relates to the field of packaging bags, and particularly discloses a biaxially oriented polypropylene low-density polyethylene medicinal composite film bag which comprises a dust-free and sterile raw material layer and an auxiliary material layer, wherein the raw material layer comprises a polypropylene film and a low-density polyethylene film which are sequentially arranged, the auxiliary material layer comprises an adhesive, the adhesive is arranged between the polypropylene film and the low-density polyethylene film, and an ink layer is printed on one side of the polypropylene film, which is far away from the low-density polyethylene film. This scheme is through the setting of low density polyethylene film, and the transparency of compound membrane bag after can effectual promotion processing is accomplished can the effectual compound membrane bag of assurance still have powerful contamination resistance.
Description
Technical Field
The invention belongs to the field of packaging bags, and particularly relates to a biaxially oriented polypropylene low-density polyethylene medical composite film bag.
Background
When the medicine is packaged, the requirement on the packaging bag is high, the medicine packaging material product generally adopts three or more layers of packaging materials, and the effects of moisture resistance, static resistance, cold resistance, oil resistance, high temperature resistance, fresh keeping, oxygen isolation, strong sealing property and the like are required.
The common inner layer heat-seal layer materials are generally made of high-density polyethylene and have good heat-seal performance, but the common ethylene materials have no good transparency and are inconvenient for observing the medicine condition in the package; meanwhile, when the high-density polyethylene is used for packaging medicines, the moisture resistance of the polyethylene is slightly poor, so that the medicines are inconvenient to store for a long time; and the common polypropylene material is not suitable for express packaging of small medicine bag bags due to high heat sealing temperature and has poor pollution resistance.
Disclosure of Invention
The invention aims to provide a biaxially oriented polypropylene low-density polyethylene medicinal composite film bag to solve the problems of low transparency and poor moisture resistance of the conventional medicine packaging composite bag.
In order to achieve the above object, the basic scheme of the invention is as follows: two-way stretch polypropylene low density polyethylene medicinal composite film bag, including dustless aseptic raw material layer and auxiliary material layer, the raw material layer is including the polypropylene membrane and the low density polyethylene film that set gradually, and the auxiliary material layer includes the adhesive, and the adhesive setting is between polypropylene membrane and low density polyethylene film, and the printing has the printing ink layer on one side that the low density polyethylene film was kept away from to the polypropylene membrane.
The principle and advantages of the basic scheme are as follows: the transparency of the processed composite film bag can be effectively improved by arranging the low-density polyethylene film, and the composite film bag can be effectively ensured to have strong pollution resistance; meanwhile, the polypropylene film is arranged on one side of the low-density polyethylene film, so that the strength of the low-density polyethylene film can be effectively improved, and the low-density polyethylene film bag is still ensured to have good transparency; and simultaneously, the printing of the ink layer on the polypropylene film is facilitated.
Further, the polypropylene film is a biaxially oriented polypropylene film.
Through the setting, the moisture resistance, transparency, strength, stiffness and printability of the biaxially oriented polypropylene film are all better, the setting of the printing layer is convenient to carry out, and the setting is outside the polyester aluminized layer and the polyethylene layer, and the moisture resistance of the composite film bag can be further enhanced.
Further, the adhesive is a polyurethane adhesive.
Through the arrangement, the polyurethane adhesive has excellent shear strength and impact resistance, has good buffering and shock-absorbing functions, is very suitable for the bonding process of a polypropylene film and a low-density polyethylene film, and can enhance the performance of a composite film bag.
Further, the ink layer is gravure ink.
Through the arrangement, the gravure printing ink can be matched with the gravure printing roller, so that the polypropylene film can be continuously printed and processed, and meanwhile, the cost of the gravure printing ink is low, and the processing cost of the composite film bag can be reduced.
Furthermore, the total thickness of the raw material layer, the auxiliary material layer and the ink layer is 11-13 um.
Through the arrangement, the whole thickness of the composite film bag can be effectively controlled, the composite film bag is guaranteed to have good strength, and the composite film bag is guaranteed to have good transparency.
Further, every 10m2The mass of the biaxially oriented polypropylene film in the raw material layer, the auxiliary material layer and the ink layer is 95-105g, and each 10m2The mass of the low-density polyethylene film in the raw material layer, the auxiliary material layer and the ink layer is 105-115 g.
Through the setting, thickness and weight that can effectual control biaxial stretching polypropylene membrane and low polyethylene film when guaranteeing composite film bag performance have reduced the raw materials cost of whole composite film bag.
Further, every 10m2The mass of the adhesive in the raw material layer, the auxiliary material layer and the ink layer is 16-20g, and each 10m2The mass of the raw material layer, the auxiliary material layer and the ink layer in the ink layer is 12-15 g.
Through the setting, thickness and weight that can effectual control adhesive and printing ink layer when guaranteeing composite film bag performance have reduced the raw materials cost of whole composite film bag.
Further, the processing steps of the biaxially oriented polypropylene low-density polyethylene medical composite film bag are as follows:
step 1: preparing a biaxially oriented polypropylene film roll, a low-density polyethylene film roll, ink for manufacturing a printing layer and an adhesive;
step 2: dedusting the biaxially oriented polypropylene film roll, the low-density polyethylene film roll, the printing ink and the outer package of the adhesive; then removing the outer package, respectively carrying out ultraviolet disinfection treatment on the biaxially oriented polypropylene film roll, the low-density polyethylene film roll, the ink and the adhesive, wherein the wavelength of ultraviolet is 240-280nm, the direct irradiation distance between a lamp and the disinfected raw material is 0.9-1.1m, and the irradiation is carried out for 25-35 min;
and step 3: adding the ink in the step 2 into an ink tank of a printing machine, then winding the double-stretched polypropylene film roll in the step 2, transmitting the double-stretched polypropylene film into the printing machine by a rotating roller or a gap bridge roller, and printing the double-stretched polypropylene film by the printing machine at the speed of 115 plus 125 m/min; feeding the printed double-stretching polypropylene film into a drying device, controlling the drying temperature to be between 50 and 80 ℃, and forming a printing layer on the double-stretching polypropylene film after drying; then rolling the biaxially oriented polypropylene film;
and 4, step 4: winding a biaxially oriented polypropylene film roll and a low-density polyethylene film roll, wherein the width of the biaxially oriented polypropylene film is 4-8mm larger than that of the biaxially oriented polypropylene film; then taking the adhesive in the step 2, placing the adhesive into a glue groove of a coating machine, controlling the speed of the coating machine to transmit the biaxially oriented polypropylene film and the low-density polyethylene film at a speed of 75-95m/min, and coating the adhesive in the glue groove on the lower side of the biaxially oriented polypropylene film; after coating, drying the adhesive, wherein the drying temperature is controlled to be 60-65 ℃, and the adhesive is dried to form a bonding layer; then pressing aluminum on the lower surface of the biaxially oriented polypropylene film and the upper surface of the low-density polyethylene film, and then rolling to obtain a semi-finished product of the laminated film;
and 5: curing the semi-finished product of the film combination in the step 4, wherein the curing temperature is controlled to be 45-55 ℃, and the curing time is 32-40h, so as to form a finished product of the film combination;
step 6: and (4) slitting the film-laminated finished product in the step (4), controlling the slitting speed of the film-laminated finished product at 140-160m/min by using a slitting machine, and making a bag on the slit film-laminated finished product to form the medicinal composite bag.
Through the arrangement, in the step 2, the outer packages of the biaxially oriented polypropylene film roll, the low-density polyethylene film roll, the printing ink and the adhesive are subjected to dust removal treatment and disinfection treatment, so that the raw materials are kept in a clean state; meanwhile, after the ultraviolet sterilization treatment is adopted, bacteria on the raw materials can be effectively killed, the preparation of a finished product of the synthetic film is convenient to directly carry out, and the prepared composite bag can be ensured to be in a sterile and dustless state and can be used for packaging medicines; in the step 3, the double-stretching polypropylene film is printed, and the printing speed of the printer and the drying temperature of the drying device are precisely matched, so that the pattern on the double-stretching polypropylene film is efficiently and accurately printed; in the step 4 and the step 5, the adhesive is coated, the pressing and drying operations of the biaxially oriented polypropylene film and the low density polyethylene film are completed, the adhesive can be rapidly cured, and the biaxially oriented polypropylene film and the low density polyethylene film can be stably bonded; and 6, rapidly cutting the finished product of the film to form a composite film bag of the final medicine to be packaged.
Further, in the step 4, before the adhesive is placed in the glue groove, the adhesive is diluted, so that the glue solution viscosity of the adhesive is 25-27 s/coater cup.
Through the arrangement, the viscosity of the adhesive can be effectively controlled, and the adhesive is uniformly coated on the lower side of the biaxially oriented polypropylene film; the adhesive layer formed between the biaxially oriented polypropylene film and the low density polyethylene film can be ensured to be in a thin state, and the processing cost of the whole composite film bag can be reduced.
Further, in step 3, the printer prints the biaxially oriented polypropylene film at a speed of 120 m/min.
Through the arrangement, the printing speed is matched with the drying temperature control, so that the printed printing layer can be dried quickly.
Drawings
FIG. 1 is a sectional view of a biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag in example 1 of the present invention;
FIG. 2 is a flow chart of the processing of the biaxially oriented polypropylene low density polyethylene medical composite film bag in example 1 of the present invention;
FIG. 3 is a sectional view showing the structure of a slitting device in the process for manufacturing a biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag according to example 2 of the present invention;
fig. 4 is a schematic structural view of the right view direction of the cutting knife in fig. 3.
Detailed Description
The following is further detailed by the specific embodiments:
reference numerals in the drawings of the specification include: the production process comprises the following steps of a polypropylene film 101, an adhesive 102, a low-density polyethylene film 103, a slitting table 20, a support frame 201, a sliding groove 202, a hydraulic rod 301, a hydraulic pump 302, a fixing block 401, a mounting groove 402, a spring 403, an electric heating sheet 404, a fixing sheet 405, a cutting knife 406, a cutting edge 407, a notch 408 and a film combination finished product 50.
Example 1
Example 1 is substantially as shown in figure 1: the medical biaxially oriented polypropylene low-density polyethylene composite film bag comprises a dust-free and sterile raw material layer and an auxiliary material layer, wherein the raw material layer comprises a polypropylene film 101 and a low-density polyethylene film 103 which are sequentially arranged, and the polypropylene film 101 is a biaxially oriented polypropylene film 101; the auxiliary material layer comprises an adhesive 102, the adhesive 102 is a polyurethane adhesive, the adhesive 102 is arranged between the polypropylene film 101 and the low-density polyethylene film 103, an ink layer is printed on one side of the polypropylene film 101, which is far away from the low-density polyethylene film 103, and the ink layer is gravure printing ink; meanwhile, the total thickness of the raw material layer, the auxiliary material layer and the ink layer is 11-13 um.
Every 10m2The biaxially oriented polypropylene film 101, the low density polyethylene film 103, the adhesive 102 and the ink layer contained in the raw material layer, the auxiliary material layer and the ink layer had a mass of 100g, 111g, 18g and 13g, respectively.
When the biaxially oriented polypropylene low-density polyethylene medical composite film bag is processed, the process flow is basically as shown in the attached figure 2, and the specific steps are as follows:
step 1: preparing a biaxially oriented polypropylene film roll, a low-density polyethylene film roll, ink for manufacturing a printing layer and an adhesive;
step 2: dedusting the biaxially oriented polypropylene film roll, the low-density polyethylene film roll, the printing ink and the outer package of the adhesive; then removing the outer package, respectively carrying out ultraviolet disinfection treatment on the biaxially oriented polypropylene film roll, the low-density polyethylene film roll, the ink and the adhesive, wherein the wavelength of ultraviolet is 240-280nm, the direct irradiation distance between a lamp and the disinfected raw material is 10.9-1.1m, and the irradiation is carried out for 30 min;
and step 3: adding the ink in the step 2 into an ink tank of a printing machine, then winding the double-stretched polypropylene film roll in the step 2, conveying the double-stretched polypropylene film into the printing machine by a rotating roller or a gap bridge roller, and printing the double-stretched polypropylene film by the printing machine at the speed of 120 m/min; feeding the printed double-stretching polypropylene film into a drying device, controlling the drying temperature to be between 50 and 80 ℃, and forming a printing layer on the double-stretching polypropylene film after drying; then rolling the biaxially oriented polypropylene film;
and 4, step 4: winding a biaxially oriented polypropylene film roll and a low-density polyethylene film roll, wherein the width of the biaxially oriented polypropylene film is more than 6mm of the width of the biaxially oriented polypropylene film; then taking the adhesive in the step 2, firstly diluting the adhesive to make the viscosity of the adhesive liquid be 25-27 s/coating cup, placing the adhesive into a glue groove of a coating machine, controlling the speed of the coating machine to transmit the biaxially oriented polypropylene film and the low-density polyethylene film at the speed of 80m/min, and coating the adhesive in the glue groove on the lower side of the biaxially oriented polypropylene film; after coating, drying the adhesive, wherein the drying temperature is controlled to be 60-65 ℃, and the adhesive is dried to form a bonding layer; then pressing aluminum on the lower surface of the biaxially oriented polypropylene film and the upper surface of the low-density polyethylene film, and then rolling to obtain a semi-finished product of the laminated film;
and 5: curing the semi-finished product of the film combination in the step 4, wherein the curing temperature is controlled to be 50 ℃, and the curing time is 36 hours, so as to form a finished product of the film combination;
step 6: and (4) cutting the film-laminated finished product in the step (4) by using a cutting device, controlling the cutting speed of the film-laminated finished product at 150m/min by using a cutting machine, and making a bag from the cut film-laminated finished product to form a medicinal composite bag.
Example 2
Embodiment 2 is different from embodiment 1 in that embodiment 2 is basically as shown in fig. 3, the slitting device includes a slitting table 20, a supporting frame 201, a slitting unit, a hydraulic rod 301, and a hydraulic pump 302 for controlling the hydraulic rod 301 to extend and retract, and the supporting frame 201 is welded on the slitting table 20; the slitting unit comprises a fixing block 401, a spring 403, an electric heating piece 404, a fixing piece 405 and a cutting knife 406, a sliding groove 202 for the fixing block 401 to vertically slide is arranged on the supporting frame 201, the lower end of the fixing block 401 is opposite to the upper surface of the slitting table 20, a mounting groove 402 is arranged at the lower end of the fixing block 401, the fixing piece 405 is horizontally arranged, the fixing piece 405 is vertically and slidably mounted in the mounting groove 402, and the lower surface of the fixing piece 405 can abut against the inner wall of the lower side of the mounting groove 402; the spring 403 is vertically installed in the installation groove 402, the upper end of the spring 403 is welded with the inner wall of the top side of the installation groove 402, the lower end of the spring 403 is welded with the upper surface of the fixing plate 405, the electric heating plate 404 is glued on the lower surface of the fixing plate 405, and moving grooves for the cutting knife 406 to vertically penetrate are formed in the middle of the fixing plate 405 and the electric heating plate 404.
As shown in fig. 3 and 4, a cutting edge 407 is disposed on the lower end of the cutting knife 406, a plurality of notches 408 are uniformly disposed at the cutting edge 407, the upper end of the cutting knife 406 passes through the moving groove and the mounting groove 402 and is connected with the fixing block 401 in a snap-fit manner, a cutting groove for contacting the cutting edge 407 of the cutting knife 406 is formed in the cutting table 20, and the cutting edge 407 of the cutting knife 406 can pass through the moving groove and contact with the cutting groove.
As shown in fig. 1, a hydraulic pump 302 is welded on the upper surface of the support frame 201, a hydraulic rod 301 is vertically disposed, the upper end of the hydraulic rod 301 is connected with the hydraulic pump 302, and the lower end of the hydraulic rod 301 passes through the support frame 201 and is welded with the upper end of the fixing block 401.
Compared with the embodiment 1, the biaxially oriented polypropylene low density polyethylene medical composite film bag in this embodiment is different in that, during the slitting process in step 6, the traction mechanisms on the left and right sides of the slitting device continuously transmit the film-laminated finished product 50, when the film-laminated finished product 50 moves to the slitting device, the hydraulic pump 302 can control the hydraulic rod 301 to continuously extend and shorten the hydraulic rod 301, so as to push the slitting unit to move up and down, when the hydraulic rod 301 extends, the hydraulic rod 301 pushes the fixing block 401 to move down along the chute 202, at this time, the electric heating plate 404 first contacts with the film-laminated finished product 50 and abuts against the upper surface of the slitting table 20, so as to heat-seal the local part of the film-laminated finished product 50, the hydraulic rod 301 continuously moves down, the electric heating plate 404 pushes the fixing plate 405 to move up along the mounting groove 402, the spring 403 is compressed, the upper part of the electric heating plate 404 moves in the mounting groove 402, this in-process cutting knife 406 relative movement groove moves down, and the cutting edge 407 department of cutting knife 406 exposes from the moving groove, cuts to the middle part of closing membrane finished product 50, and the cutting edge 407 department of cutting knife 406 strikes to cutting inslot, realizes closing the complete cutting of membrane finished product 50, closes to be on the membrane finished product 50 and tears the threadiness, is convenient for tear the taking to final fashioned medicinal composite bag.
After cutting is finished, the hydraulic pump 302 controls the hydraulic rod 301 to shorten, the cutting knife 406 and the electric heating sheet 404 are both separated from the film combination finished product 50, and at the moment, the electric heating sheet 404 and the fixing sheet 405 automatically move downwards to stop the blade 407 of the cutting knife 406 again, so that the blade 407 can be protected; then, the traction mechanisms on the left and right sides of the cutting device convey the finished film-laminated product 50 again, so that the next position to be cut of the finished film-laminated product 50 is opposite to the cutting knife 406.
In the process, the cutting of the cutting knife 406 can be matched with the heat sealing treatment of the electric heating sheet 404, so that the film-closed finished product 50 can be subjected to heat sealing, and meanwhile, the tearing line of the film-closed finished product 50 can be cut; the setting of cutting flutes simultaneously can provide the tool location that moves back for cutting knife 406, can realize closing the accurate cutting of membrane finished product 50, can carry out effectual protection again to the cutting edge 407 department of cutting knife 406.
Claims (10)
1. Two-way stretch polypropylene low density polyethylene medicinal composite film bag, including dustless aseptic raw material layer and auxiliary material layer, its characterized in that, raw material layer is including the polypropylene membrane and the low density polyethylene film that set gradually, and the auxiliary material layer includes the adhesive, and the adhesive setting is between polypropylene membrane and low density polyethylene film, and the printing has the printing ink layer on one side that the low density polyethylene film was kept away from to the polypropylene membrane.
2. The biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag of claim 1, wherein the polypropylene film is a biaxially oriented polypropylene film.
3. The biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag of claim 2, wherein the adhesive is a polyurethane adhesive.
4. The biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag of claim 3, wherein the ink layer is a gravure ink.
5. The biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag of claim 4, wherein the total thickness of the raw material layer, the auxiliary material layer and the ink layer is 11-13 um.
6. The biaxially oriented polypropylene low density polyethylene pharmaceutical composite film pouch according to claim 5, wherein the film pouch is characterized by being filled with the biaxially oriented polypropylene low density polyethylene film pouch every 10m2The mass of the biaxially oriented polypropylene film in the raw material layer, the auxiliary material layer and the ink layer is 95-105g, and each 10m2The mass of the low-density polyethylene film in the raw material layer, the auxiliary material layer and the ink layer is 105-115 g.
7. The biaxially oriented polypropylene low density polyethylene pharmaceutical composite film pouch according to claim 6, wherein the film pouch is characterized by being filled with 10m of film2The mass of the adhesive in the raw material layer, the auxiliary material layer and the ink layer is 16-20g, and each 10m2The mass of the raw material layer, the auxiliary material layer and the ink layer in the ink layer is 12-15 g.
8. The biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag according to claim 7, wherein the processing steps of the biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag are as follows:
step 1: preparing a biaxially oriented polypropylene film roll, a low-density polyethylene film roll, ink for manufacturing a printing layer and an adhesive;
step 2: dedusting the biaxially oriented polypropylene film roll, the low-density polyethylene film roll, the printing ink and the outer package of the adhesive; then removing the outer package, respectively carrying out ultraviolet disinfection treatment on the biaxially oriented polypropylene film roll, the low-density polyethylene film roll, the ink and the adhesive, wherein the wavelength of ultraviolet is 240-280nm, the direct irradiation distance between a lamp and the disinfected raw material is 0.9-1.1m, and the irradiation is carried out for 25-35 min;
and step 3: adding the ink in the step 2 into an ink tank of a printing machine, then winding the double-stretched polypropylene film roll in the step 2, transmitting the double-stretched polypropylene film into the printing machine by a rotating roller or a gap bridge roller, and printing the double-stretched polypropylene film by the printing machine at the speed of 115 plus 125 m/min; feeding the printed double-stretching polypropylene film into a drying device, controlling the drying temperature to be between 50 and 80 ℃, and forming a printing layer on the double-stretching polypropylene film after drying; then rolling the biaxially oriented polypropylene film;
and 4, step 4: winding a biaxially oriented polypropylene film roll and a low-density polyethylene film roll, wherein the width of the biaxially oriented polypropylene film is 4-8mm larger than that of the biaxially oriented polypropylene film; then taking the adhesive in the step 2, placing the adhesive into a glue groove of a coating machine, controlling the speed of the coating machine to transmit the biaxially oriented polypropylene film and the low-density polyethylene film at a speed of 75-95m/min, and coating the adhesive in the glue groove on the lower side of the biaxially oriented polypropylene film; after coating, drying the adhesive, wherein the drying temperature is controlled to be 60-65 ℃, and the adhesive is dried to form a bonding layer; then pressing aluminum on the lower surface of the biaxially oriented polypropylene film and the upper surface of the low-density polyethylene film, and then rolling to obtain a semi-finished product of the laminated film;
and 5: curing the semi-finished product of the film combination in the step 4, wherein the curing temperature is controlled to be 45-55 ℃, and the curing time is 32-40h, so as to form a finished product of the film combination;
step 6: and (4) slitting the film-laminated finished product in the step (4), controlling the slitting speed of the film-laminated finished product at 140-160m/min by using a slitting machine, and making a bag on the slit film-laminated finished product to form the medicinal composite bag.
9. The biaxially oriented polypropylene low-density polyethylene composite film bag for medical use according to claim 8, wherein in the step 4, the adhesive is diluted before being placed in the glue tank, so that the glue viscosity of the adhesive is 25-27 s/coater cup.
10. The biaxially oriented polypropylene low density polyethylene pharmaceutical composite film bag of claim 9, wherein in step 3, the printer prints the biaxially oriented polypropylene film at a speed of 120 m/min.
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Application publication date: 20210319 |