CN111483700B - Medical aseptic packaging film with tear resistance - Google Patents
Medical aseptic packaging film with tear resistance Download PDFInfo
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- CN111483700B CN111483700B CN202010306322.4A CN202010306322A CN111483700B CN 111483700 B CN111483700 B CN 111483700B CN 202010306322 A CN202010306322 A CN 202010306322A CN 111483700 B CN111483700 B CN 111483700B
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/046—Presence of homo or copolymers of ethene in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2427/00—Presence of halogenated polymer
- C09J2427/006—Presence of halogenated polymer in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2477/00—Presence of polyamide
- C09J2477/006—Presence of polyamide in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2497/00—Presence of lignin
- C09J2497/006—Presence of lignin in the substrate
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Abstract
The invention relates to a medical aseptic packaging film with tear resistance and a production process thereof, wherein the medical aseptic packaging film with tear resistance comprises a main body film and a protection part fixed on the peripheral edge of the main body film, the protection part comprises a tear-resistant buffer layer, a bacteriostatic coating and a release layer, the bacteriostatic coating is fixed between the tear-resistant buffer layer and the release layer, and the thickness of the protection part is greater than that of the main body film. The antibacterial coatings at the edges of the main body membrane are mutually attached, so that the medical instrument is not easily attacked by bacteria when being stored, and a good antibacterial effect is achieved. The anti-tearing buffer layer increases the anti-tearing performance and the shock resistance of the packaging film, so that medical appliances are not easy to penetrate out of the packaging film to be polluted by the outside. The protective thickness of the main body film is larger than the thickness of the main body film, so that the tearing strength of the main body film is improved by multiple times or even tens of times, and the integral tearing strength of the medical sterile packaging film is effectively improved.
Description
Technical Field
The invention relates to the technical field of packaging films, in particular to a medical aseptic packaging film with tear resistance and a production process thereof.
Background
The medical plastic packaging film has wide application, not only can be used for packaging tablets, powder and granular medicines, but also can be used for packaging liners of paper boxes for packaging paste, liquid and medicines, medical instruments and the like, and common films comprise shrink films, winding films, multilayer composite films and the like. In the medicine package, the glass bottle and plastic bottle which are used in the past are gradually replaced by plastic films, and particularly, the medical liquid plastic flexible package such as an infusion bag and a plasma bag develops more rapidly.
In the prior art, a chinese patent with an authorization publication number of CN207791610U discloses a high-barrier antibacterial food packaging film, which is a layered structure and comprises an antibacterial layer, a printing layer, a protective layer, a toughening layer and a thermal insulation layer, wherein the protective layer, the printing layer, the thermal insulation layer, the toughening layer and the antibacterial layer are sequentially compounded.
The above prior art solutions have the following drawbacks: the environment for the medical device is extremely strict, and the medical device must be ensured to be in a sterile environment. Foretell utility model through the dual assurance of toughening layer and protective layer, though the cushioning nature and the toughness of packaging film have been improved to a certain extent. However, when the packaging film is used for packaging some sharp medical instruments, the packaging film does not have tear resistance, so that the medical instruments can easily scratch the packaging film to be in contact with the outside air in the transportation process, and the pollution caused by the fact that outside bacteria and viruses are adsorbed on the medical instruments through air transmission inevitably occurs. Therefore, there is a need to solve the problem of aseptic packaging of some medical devices.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a medical sterile packaging film with tear resistance, which has tear resistance and prevents medical instruments from being polluted due to the fact that the packaging film is scratched in the transportation process of the medical instruments.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a medical aseptic packaging film with tear resistance, includes the main part membrane and fixes the protection portion at border around the main part membrane, the protection portion is including tearing buffer layer, antibacterial coating and release layer, antibacterial coating fixes tear the buffer layer with between the release layer, the thickness of protection portion is greater than the thickness of main part membrane.
Through the technical scheme, when the medical sterile packaging film is used for packaging medical instruments, the release paper layer is torn from the protection part, and the medical instruments are placed between the two layers of medical sterile packaging films. The antibacterial coatings at the edges of the main body membrane are mutually attached, so that the medical instrument is not easily attacked by bacteria when being stored, and a good antibacterial effect is achieved. The anti-tearing buffer layer increases the anti-tearing performance and the shock resistance of the packaging film, so that medical appliances are not easy to penetrate out of the packaging film to be polluted by the outside. During the use process of the medical sterile packaging film, the tensile force applied to the medical sterile packaging film is mainly concentrated on the edge, and if a tearing opening occurs on the edge, the edge can quickly extend to the whole film body, so that the packaging effect is influenced. The protective thickness of the main body film is larger than the thickness of the main body film, so that the tearing strength of the main body film is improved by multiple times or even tens of times, and the integral tearing strength of the medical sterile packaging film is effectively improved. Meanwhile, the antibacterial coating is only arranged on the protection part, namely the periphery of the main body membrane, so that the material for manufacturing the antibacterial coating is saved under the condition of ensuring the sterility of the medical appliance. Laminating from the type layer on antibacterial coating, tearing off the type layer during the use, not only improved the life of packaging film, still made things convenient for medical personnel to use.
The present invention in a preferred example may be further configured to: one side of the anti-tearing buffer layer, which is far away from the bacteriostatic coating, is coated with a barrier layer, and an adhesive layer is arranged between the release layer and the bacteriostatic coating.
Through above-mentioned technical scheme, when using, tear off from the type layer, bond the one side of not dry glue film on another medical aseptic packaging film, medical instrument packs between two-layer packaging film, has played fine sealed effect. The barrier layer prevents water vapor, dust, bacteria and the like in the outside air from penetrating through the anti-tearing buffer layer to be attached to the medical instrument, the protective effect is achieved, meanwhile, the reduction of the adhesiveness of the non-dry adhesive layer is avoided, and the service life of the medical packaging film is prolonged.
The present invention in a preferred example may be further configured to: the main body membrane comprises a PE resin film, a nylon membrane layer and a fiber layer which are sequentially covered, and adhesive layers are arranged between the fiber layer and the nylon membrane layer and between the PE resin film and the nylon membrane layer.
Through above-mentioned technical scheme, PE resin film has fabulous wearability, folding endurance, water resistance and tear resistance as the outmost layer of packaging film. The nylon film layer and the fiber layer have good tensile structures, and the tear resistance of the main body film is further improved.
The present invention in a preferred example may be further configured to: the barrier layer is made of polyethylene materials, and the adhesive layer is made of ethylene acrylic acid copolymer materials.
By the technical scheme, the polyethylene material is non-toxic and odorless, has good chemical stability and high flexibility, and the protected object is not polluted, corroded or scratched in the processes of production, processing, transportation, storage and use, and the original smooth and bright surface is protected, so that the quality and market competitiveness of the product are improved, and the polyethylene material can be directly used for packaging medical instruments. The content of the ethyl acrylate in the adhesive layer is 15-30%, and the adhesive layer has good flexibility, thermal stability and processability. The environmental stress cracking resistance, the impact resistance, the bending fatigue resistance and the low temperature resistance are all superior to those of the low density polyethylene. The two materials improve the tear resistance of the medical sterile packaging film to a certain extent and increase the stability during packaging.
The present invention in a preferred example may be further configured to: the bacteriostatic coating is formed by uniformly coating SRB antibacterial coating.
Through the technical scheme, the metronidazole bactericide is added into the SRB antibacterial coating, and the SRB antibacterial coating containing the metronidazole bactericide has strong capability of inhibiting SRB bacteria from adhering and growing on the surface of the coating and has excellent antibacterial performance.
The present invention in a preferred example may be further configured to: the tear-resistant buffer layer is made of aluminum foil.
Through the technical scheme, the aluminum foil has good plasticity and high hardness, and the anti-tearing buffer layer made of the aluminum foil can provide a certain buffer amplitude, so that medical equipment is prevented from being scratched, and the anti-tearing performance of the packaging film is improved.
The present invention in a preferred example may be further configured to: the tear-resistant buffer layer is made of a PVC-UH material.
Through the technical scheme, the PVC-UH has high strength, high pressure bearing capacity, good toughness and better impact resistance, and can effectively prevent medical instruments from being scratched, so that the tear resistance of the packaging film is improved.
The invention also aims to provide a medical aseptic packaging film with tear resistance and a production process thereof, which are used for producing the packaging film for protecting medical instruments in transportation and preventing the medical instruments from being polluted.
The above object of the present invention is achieved by the following technical solutions:
a production process of a medical sterile packaging film with tear resistance comprises the following steps:
s1, preparing a main body film: soaking plant fiber powder, chitin and diatomite in alkali liquor, filtering to obtain a filter cake, cleaning and drying to obtain a fiber layer;
heating and melting an ethylene acrylic acid copolymer material to form the adhesive layer, uniformly coating the adhesive layer on two sides of the nylon film layer, and then coating the PE resin film and the fiber layer on the nylon film layer, wherein the thickness range of the nylon film layer is controlled to be 0.015-0.017 mm;
s2, preparing a protection part: melting a polyethylene material at the temperature of 250-255 ℃, and then uniformly covering the polyethylene material on the tear-resistant buffer layer;
after the non-drying glue layer and the SRB antibacterial coating are coated on the surface, far away from the barrier layer, of the tear-resistant buffer layer, the release layer is attached to the tear-resistant buffer layer;
s3, cutting and combining: cutting off the middle part of the prepared and molded protective part, and adhering the protective part to the peripheral edge of the main body film by a punch;
s4, cooling and rolling: and cooling the formed sterile packaging film by a cooling roller, and then winding the sterile packaging film by a winding roller.
By the technical scheme, the medical sterile packaging film prepared by the method has extremely high tear resistance and bacteriostatic action, and can play a good sealing effect when packaging some relatively sharp medical instruments, so that external bacteria are not easy to enter the packaging film to pollute the medical instruments. Meanwhile, in the process of transporting the medical apparatus and instruments, the packaging film is not easy to scratch and is in contact with the outside air, and a clean and sterile environment is ensured.
The present invention in a preferred example may be further configured to: in step S1, the pH of the alkali liquor is 13-15, the alkali liquor is a sodium hydroxide solution or a potassium oxide solution, the particle size of the plant fiber powder is 1-3 mm, and the thickness of the nylon membrane layer is 0.016 mm.
Through the technical scheme, the particle size of the plant fiber powder, the pH value of the alkali liquor and the specific type can be selected in a wide range, but in order to enable the prepared medical packaging film to have more excellent tear resistance, the numerical value in the range meets the requirements. The nylon film layer of 0.016mm ensures the tearing resistance of the main body film, so that the main body film reaches the most appropriate thickness.
In summary, the invention includes at least one of the following beneficial technical effects:
1. when the medical sterile packaging film is used for packaging medical devices, the release paper layer is torn from the protection part, and the medical devices are placed between the two layers of medical sterile packaging films. The antibacterial coatings at the edges of the main body membrane are mutually attached, so that the medical instrument is not easily attacked by bacteria when being stored, and a good antibacterial effect is achieved. The anti-tearing buffer layer increases the anti-tearing performance and the shock resistance of the packaging film, so that medical appliances are not easy to penetrate out of the packaging film to be polluted by the outside.
2. When the medical aseptic packaging film is used, the release layer is torn off, one surface of the non-drying adhesive layer is bonded on another medical aseptic packaging film, and medical instruments are packaged between the two layers of packaging films, so that a good sealing effect is achieved. The barrier layer prevents water vapor, dust, bacteria and the like in the outside air from penetrating through the anti-tearing buffer layer to be attached to the medical instrument, the protective effect is achieved, meanwhile, the reduction of the adhesiveness of the non-dry adhesive layer is avoided, and the service life of the medical packaging film is prolonged.
And 3, the metronidazole bactericide is added into the SRB antibacterial coating, and the SRB antibacterial coating containing the metronidazole bactericide has strong capability of inhibiting SRB bacteria from adhering and growing on the surface of the coating and has very excellent antibacterial performance.
Drawings
FIG. 1 is a cross-sectional view of a medical sterile packaging film exhibiting tear resistance in accordance with the present invention.
Fig. 2 is a flow chart showing the production process of the medical aseptic packaging film with tear resistance of the present invention.
Reference numerals: 1. a main body membrane; 11. a PE resin film; 12. a nylon membrane layer; 13. a fibrous layer; 14. an adhesive layer; 2. a protection part; 21. a tear-resistant buffer layer; 22. a bacteriostatic coating; 23. a release layer; 24. a barrier layer; 25. the adhesive layer is not dried.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, the medical aseptic packaging film with tear resistance disclosed by the invention comprises a main body film 1 and a protection part 2 fixed on the peripheral edge of the main body film 1. Wherein, protection portion 2 is including tearing buffer layer 21, antibacterial coating 22 and from type layer 23, and antibacterial coating 22 is fixed between tearing buffer layer 21 and from type layer 23, and the thickness of protection portion 2 is greater than the thickness of main part membrane 1. Furthermore, the bacteriostatic coating 22 is formed by uniformly coating SRB antibacterial paint, metronidazole bactericide is added into the SRB antibacterial paint, and the SRB bacteriostatic paint containing the metronidazole bactericide has strong capability of inhibiting SRB bacteria from adhering and growing on the surface of the paint, and has very excellent antibacterial performance. The tear-resistant buffer layer 21 is made of aluminum foil which has good plasticity and high hardness, and the tear-resistant buffer layer 21 made of the aluminum foil can provide a certain buffer amplitude, so that medical equipment is prevented from being scratched, and the tear resistance of the packaging film is improved.
The surface, far away from the antibacterial coating 22, of the tear-resistant buffer layer 21 is covered with the barrier layer 24, the barrier layer 24 is made of polyethylene materials, the polyethylene materials have good mechanical properties, the impact strength is 3-5 times that of other films, and the folding resistance is good. The barrier layer 24 made of the composite material has low gas and water vapor permeability, has excellent gas, water, oil and odor resistance, has the characteristics of no toxicity and no odor, and can be directly used for packaging medical instruments.
Referring to fig. 1, a non-drying adhesive layer 25 is arranged between the release layer 23 and the bacteriostatic coating 22, when the medical sterile packaging film is used, the release layer 23 is torn off, one surface of the non-drying adhesive layer 25 is bonded on another medical sterile packaging film, and medical equipment is packaged between the two packaging films, so that a good sealing effect is achieved. The barrier layer 24 prevents water vapor, dust, bacteria and the like in the outside air from penetrating through the tear-resistant buffer layer 21 and attaching to the medical equipment, so that the protective effect is achieved, meanwhile, the reduction of the adhesion of the adhesive sticker layer 25 is avoided, and the service life of the medical packaging film is prolonged.
Further, the main body film 1 includes a PE resin film 11, a nylon film layer 12, and a fiber layer 13, which are sequentially laminated, and the PE resin film 11 has excellent abrasion resistance, folding resistance, water resistance, and tear resistance as an outermost layer of the packaging film. The nylon membrane layer 12 and the fiber layer 13 have good tensile structures, and the tear resistance of the main body membrane 1 is further improved. Adhesive layers 14 are arranged between the fiber layer 13 and the nylon film layer 12 and between the PE resin film 11 and the nylon film layer 12, and the adhesive layers 14 are made of ethylene acrylic acid copolymer materials. The content of the ethyl acrylate in the adhesive layer 14 is 15-30%, and the adhesive layer has good flexibility, thermal stability and processability. The environmental stress cracking resistance, the impact resistance, the bending fatigue resistance and the low temperature resistance are all superior to those of the low density polyethylene. The main body film 1 made of the materials improves the tear resistance of the medical sterile packaging film to a certain extent and increases the stability during packaging.
The implementation principle of the embodiment is as follows: when the medical device is packaged by using the medical sterile packaging film, the release paper layer is torn from the protection part 2, and the medical device is placed between the two layers of medical sterile packaging films. The bacteriostatic coatings 22 at the edges of the main body film 1 are mutually attached, so that the medical instrument is not easily attacked by bacteria when being stored, and a good antibacterial effect is achieved. The tear-resistant buffer layer 21 increases the tear resistance and shock resistance of the packaging film, so that medical devices are not easy to penetrate out of the packaging film and be polluted by the outside. During the use process of the medical sterile packaging film, the tensile force applied to the medical sterile packaging film is mainly concentrated on the edge, and if a tearing opening occurs on the edge, the edge can quickly extend to the whole film body, so that the packaging effect is influenced.
The protective thickness of the main body film 1 is larger than the thickness of the main body film 1, so that the tearing strength of the main body film is improved by multiple times or even tens of times, and the integral tearing strength of the medical sterile packaging film is effectively improved. Meanwhile, the bacteriostatic coating 22 is only arranged on the protective part 2, namely the periphery of the main body membrane 1, so that the material for manufacturing the bacteriostatic coating 22 is saved under the condition of ensuring the sterility of the medical appliance. Laminating from type layer 23 on antibacterial coating 22 will tear from type layer 23 during the use, has not only improved the life of packaging film, still makes things convenient for medical personnel to use.
Example two:
referring to fig. 1, the invention discloses a medical sterile packaging film with tear resistance, which is characterized in that: the anti-tear buffer layer is made of PVC-UH materials, and the PVC-UH has high strength, high pressure bearing capacity, good toughness and better impact resistance, can effectively prevent medical instruments from being scratched, and further improves the anti-tear performance of the packaging film.
Example three:
referring to fig. 2, a production process of a medical sterile packaging film with tear resistance comprises the following steps:
s1, preparing a main body film 1: soaking plant fiber powder, chitin and diatomite in alkali liquor, filtering to obtain a filter cake, cleaning and drying to obtain a fiber layer 13;
heating and melting an ethylene acrylic acid copolymer material to form an adhesive layer 14, uniformly coating the adhesive layer 14 on two surfaces of a nylon membrane layer 12, then coating a PE resin film 11 and a fiber layer 13 on the nylon membrane layer 12, and controlling the thickness range of the nylon membrane layer 12 to be 0.015-0.017 mm;
s2, preparing the protecting part 2: melting the polyethylene material at 250-255 ℃, and then uniformly covering the polyethylene material on the tear-resistant buffer layer 21;
after a self-adhesive layer 25 and an SRB antibacterial coating are coated on one surface, far away from the barrier layer 24, of the tear-resistant buffer layer 21, the release layer 23 is attached to the tear-resistant buffer layer 21;
s3, cutting and combining: cutting off the middle part of the prepared and molded protection part 2, and adhering the protection part 2 to the peripheral edge of the main body film 1 by a punch;
s4, cooling and rolling: and cooling the formed sterile packaging film by a cooling roller, and then winding the sterile packaging film by a winding roller.
The medical sterile packaging film prepared by the method has extremely high tear resistance and bacteriostatic action, and can play a good role in sealing a plurality of relatively sharp medical instruments when being packaged, so that external bacteria are not easy to enter the packaging film to pollute the medical instruments. Meanwhile, in the process of transporting the medical apparatus and instruments, the packaging film is not easy to scratch and is in contact with the outside air, and a clean and sterile environment is ensured.
In step S1, the pH of the alkali solution is 13-15, the alkali solution is a sodium hydroxide solution or a potassium oxide solution, the particle size of the plant fiber powder is 1-3 mm, and the thickness of the nylon membrane layer 12 is 0.016 mm. The particle size of the plant fiber powder, the pH value of the alkali liquor and the specific type can be selected in a wide range, but in order to enable the prepared medical packaging film to have more excellent tear resistance, the numerical value in the range is more satisfactory. The nylon film layer 12 of 0.016mm ensures the tearing strength of the main body film 1, so that the main body film 1 reaches the most appropriate thickness.
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 (6)
1. A medical aseptic packaging film with tear resistance comprises a main body film (1) and a protection part (2) fixed on the peripheral edge of the main body film (1), and is characterized in that: the protective part (2) comprises a tear-resistant buffer layer (21), a bacteriostatic coating (22) and a release layer (23), the bacteriostatic coating (22) is fixed between the tear-resistant buffer layer (21) and the release layer (23), and the thickness of the protective part (2) is greater than that of the main body film (1);
the main body film (1) comprises a PE resin film (11), a nylon film layer (12) and a fiber layer (13) which are sequentially laminated; adhesive layers (14) are arranged between the fiber layer (13) and the nylon film layer (12) and between the PE resin film (11) and the nylon film layer (12);
a barrier layer (24) is coated on one surface, far away from the bacteriostatic coating (22), of the tear-resistant buffer layer (21), and a non-drying glue layer (25) is arranged between the release layer (23) and the bacteriostatic coating (22);
a production process of a medical sterile packaging film with tear resistance comprises the following steps:
s1, preparing a main body film (1): soaking plant fiber powder, chitin and diatomite in alkali liquor, filtering to obtain a filter cake, cleaning and drying to obtain the fiber layer (13);
heating and melting an ethylene acrylic acid copolymer material to form the adhesive layer (14), uniformly coating the adhesive layer (14) on two surfaces of the nylon film layer (12), then coating the PE resin film (11) and the fiber layer (13) on the nylon film layer (12), and controlling the thickness range of the nylon film layer (12) to be 0.015-0.017 mm;
s2, preparing a protection part (2): melting a polyethylene material at the temperature of 250-255 ℃, and then uniformly covering the polyethylene material on the tear-resistant buffer layer (21);
after the side, far away from the barrier layer (24), of the tear-resistant buffer layer (21) is coated with the non-drying glue layer (25) and the SRB antibacterial coating, a release layer (23) is attached to the tear-resistant buffer layer (21);
s3, cutting and combining: cutting off the middle part of the prepared and molded protection part (2), and adhering the protection part (2) to the peripheral edge of the main body film (1) through a punching machine;
s4, cooling and rolling: and cooling the formed sterile packaging film by a cooling roller, and then winding the sterile packaging film by a winding roller.
2. The medical sterile packaging film with tear resistance of claim 1, wherein: the barrier layer (24) is made of polyethylene materials, and the adhesive layer (14) is made of ethylene acrylic acid copolymer materials.
3. The medical sterile packaging film with tear resistance of claim 1, wherein: the antibacterial coating (22) is formed by uniformly coating SRB antibacterial coating.
4. The medical sterile packaging film with tear resistance of claim 1, wherein: the tear-resistant buffer layer (21) is made of aluminum foil.
5. The medical sterile packaging film with tear resistance of claim 1, wherein: the tear-resistant buffer layer (21) is made of a PVC-UH material.
6. The process for producing the medical aseptic packaging film with tear resistance according to claim 1, wherein: in step S1, the pH of the alkali liquor is 13-15, the alkali liquor is a sodium hydroxide solution or a potassium oxide solution, the particle size of the plant fiber powder is 1-3 mm, and the thickness of the nylon membrane layer (12) is 0.016 mm.
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| CN206520289U (en) * | 2017-01-20 | 2017-09-26 | 肇庆市华阳包装印刷有限公司 | A kind of plastic sheeting label |
| CN106927135B (en) * | 2017-03-06 | 2019-01-01 | 苏州恒星医用材料有限公司 | Bandage packaging |
| CN206631445U (en) * | 2017-04-05 | 2017-11-14 | 卢静琼 | A kind of anti-bacterial and anti-fouling contaminates filter membrane |
| CN207403299U (en) * | 2017-10-25 | 2018-05-25 | 东莞智国新材料科技有限公司 | It is a kind of to heat composite leather with edge sealing structure |
| CN209257594U (en) * | 2018-08-07 | 2019-08-16 | 皖西学院 | A kind of antibacterial waterproof roll |
| CN209700038U (en) * | 2019-03-21 | 2019-11-29 | 海宁市粤海彩印有限公司 | Structure is destaticed in composite membrane |
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Denomination of invention: A medical sterile packaging film with tear resistance Effective date of registration: 20220214 Granted publication date: 20211207 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jinshan sub branch Pledgor: Shanghai Tangke New Material Technology Co.,Ltd. Registration number: Y2022310000026 |
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