CN220298015U - Medical packaging material - Google Patents
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- CN220298015U CN220298015U CN202321445829.3U CN202321445829U CN220298015U CN 220298015 U CN220298015 U CN 220298015U CN 202321445829 U CN202321445829 U CN 202321445829U CN 220298015 U CN220298015 U CN 220298015U
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- 239000005022 packaging material Substances 0.000 title claims abstract description 59
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 40
- 239000004831 Hot glue Substances 0.000 claims abstract description 35
- 238000000502 dialysis Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000005098 hot rolling Methods 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 238000013329 compounding Methods 0.000 claims abstract description 12
- 230000035699 permeability Effects 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 81
- 230000001070 adhesive effect Effects 0.000 claims description 36
- 239000000853 adhesive Substances 0.000 claims description 35
- 239000000835 fiber Substances 0.000 claims description 33
- -1 polypropylene Polymers 0.000 claims description 26
- 230000002706 hydrostatic effect Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 230000001788 irregular Effects 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 8
- 229920003043 Cellulose fiber Polymers 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 238000002074 melt spinning Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 8
- 244000005700 microbiome Species 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000004026 adhesive bonding Methods 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 description 14
- 238000004806 packaging method and process Methods 0.000 description 13
- 230000006872 improvement Effects 0.000 description 10
- 238000004659 sterilization and disinfection Methods 0.000 description 10
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000000813 microbial effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 206010040844 Skin exfoliation Diseases 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010034133 Pathogen resistance Diseases 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000009455 aseptic packaging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Abstract
The utility model relates to the field of medical instrument packaging materials, and discloses a medical packaging material, which is prepared by coating and compounding the medical packaging material once by a hot melt adhesive coating compounding machine and hot rolling the medical packaging material by a high-pressure double-light-roller hot rolling mill, wherein the medical packaging material sequentially comprises a high-strength hot-rolled non-woven fabric layer, a first hot melt adhesive bonding layer, a dialysis raw paper layer, a second hot melt adhesive bonding layer and a double-component hot-rolled non-woven fabric layer from outside to inside; the packaging material prepared by the method has the advantages of smooth surface, high strength, water repellency, abrasion resistance, tearing resistance, good air permeability, microorganism and dust shielding functions, better heat sealing effect, environmental protection, no pollution, simple production process, easy operation and good application prospect in the field of medical instrument packaging materials.
Description
Technical Field
The utility model relates to the field of medical instrument packaging materials, in particular to a medical packaging material.
Background
The medical instrument sterilizing package refers to a medical instrument packaging system which is applied to sterilization and comprises a disposable sterile medical instrument production enterprise for packaging and sterilizing products, and a hospital sterilizing supply center for packaging and sealing reusable medical instruments for sterilization and storage.
Medical device sterilization packages are classified into protective packages and sterile barrier systems, wherein the sterile barrier system is a critical component of the sterilization package, and the construction of the sterile barrier system depends on the selection and processing of the appropriate dialysis packaging material.
The paper plastic packaging bag is used for packaging medical appliance products, and has the structure of one side of paper and one side of plastic composite film; as the initial inner package of the product, the packaged medical equipment can be sterilized and disinfected, the placed medical equipment is protected, and the medical equipment is prevented from being polluted by microorganisms invading the inside of the paper plastic packaging bag in the storage and transportation processes. Thereby the medical appliance can maintain the sterile state in a certain period, and is convenient for direct use in the later period.
The medical dialysis base paper is processed by wood pulp, is an important raw material and composition of medical packaging, is required to have good air permeability and dry and wet strength, and is widely applied to the medical packaging industry; the medical dialyzing paper is prepared by gravure printing and coating thermoplastic resin on the surface of dialyzing base paper, and can be directly heat-sealed or glue-sealed with polyethylene, polypropylene and other film materials to prepare a paper-plastic packaging bag with dialyzing function, wherein steam can enter and exit but is impermeable; the paper plastic bag is often used as a sterilizing packaging material for medical instruments in the medical packaging industry due to the advantages of good bacteria resistance effect, long storage time, convenient use and the like.
The medical dialyzing paper has specific requirements on paper strength, bacterial resistance, water repellency, air permeability and the like; the general dialysis paper is generally prepared by a paper making process and a solvent glue coating mode, but has the characteristics of certain hydrophilicity, poor mechanical property, poor wear resistance and the like, so that the general dialysis paper is easy to damage. And the adhesive strength of the dialysis base paper is poor, and when the bag (box) is made, a layer of adhesive is coated on the surface of the paper, and then the adhesive is bonded, because the hot melt adhesive is mostly water-based or solvent-based adhesive, the water or solvent in the adhesive needs to be removed in the processing process, the production equipment is complex, the energy consumption is high, the production efficiency is low, the production cost is high, and when the adhesive coating process is coating solvent adhesive, the solvent volatilizes in the production process, so that the harm to operators and the environment can be generated.
The composite film has various varieties, and the adhesive strength is different when different films are compounded, so that the problems of opening, non-adhesion, over-high adhesive strength, difficult tearing of package or chipping caused by breakage during tearing and the like are easy to occur.
Therefore, a high-performance medical dialyzing paper with good mechanical property, water repellency and simple and environment-friendly preparation process is urgently needed in the field of aseptic medical packaging.
Disclosure of Invention
Based on this, the object of the present utility model is to provide a medical packaging material which aims at overcoming the shortcomings of the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a medical packaging material is characterized in that the medical packaging material is prepared by coating and compounding once by a hot melt adhesive coating compounding machine, and hot rolling by a high-pressure double-smooth-roller hot rolling mill, wherein the thickness is 0.17-0.40 mm, and the gram weight is 95-210 g/m 2 High-strength hot-rolled non-strip with thickness of 0.05-0.16 mm from outside to insideThe double-component hot-rolled non-woven fabric comprises a woven fabric layer, a first hot-melt adhesive layer, a dialysis raw paper layer, a second hot-melt adhesive layer and a double-component hot-rolled non-woven fabric layer with the thickness of 0.05-0.12 mm; the high-strength hot-rolled non-woven fabric layer and the bi-component hot-rolled non-woven fabric layer are both provided with irregularly-closely arranged fiber structures, the dialysis raw paper layer is irregularly-closely arranged flat superfine fiber structures, adhesive structures playing a role in adhesion are arranged in the first hot-melt adhesive layer and the second hot-melt adhesive layer, and the adhesive structures are dot structures or irregular strip structures.
As a further improvement of the utility model, the high-strength hot-rolled non-woven fabric layer consists of long fibers made of any one of polypropylene and polyethylene terephthalate, and has the gram weight of 20-80 g/m 2 The long fiber has a diameter of 10-30 μm, a transverse tensile strength of 1-4.5 KN/m, a longitudinal tensile strength of 2-8 KN/m, a transverse-longitudinal tear strength of 1000-4000 mN, and a hydrostatic pressure resistance of 25-35 cmH 2 O, and after abrasion resistance test for 125 times, the surface has no fuzzing phenomenon.
As a further improvement of the utility model, the high-strength hot-rolled non-woven fabric layer consists of long fibers made of any two materials of polyethylene, polypropylene and polyethylene terephthalate, and has the gram weight of 20-80 g/m 2 The long fiber has a diameter of 10-25 mu m, a transverse tensile strength of 1-4 KN/m, a longitudinal tensile strength of 2-7 KN/m, a transverse and longitudinal tear strength of 1000-3500 mN, and no fuzzing phenomenon on the surface after abrasion resistance test for 125 times.
As a further improvement of the utility model, the fiber structure of the high-strength hot-rolled non-woven fabric layer after the hot rolling process is more compact, the surface is smooth, the strength is high, and the high-strength hot-rolled non-woven fabric layer has the functions of water repellency, abrasion resistance and tearing resistance.
As a further improvement of the utility model, the dialysis raw paper layer is prepared from cellulose fibers through a pulp mixing and papermaking process, and has the thickness of 0.07-0.12 mm and the gram weight of 50-70 g/m 2 。
As a further improvement of the utility model, the cellulose fiber has a width of 7-25 μm, a thickness of 0.5-3 μm and a hydrostatic pressure resistance of 60-80 cmH 2 O，The transverse tensile strength is 3-5 KN/m, the longitudinal tensile strength is 5-7 KN/m, the transverse and longitudinal tear strength is 80-100 mN, and the microbial barrier test shows that the microbial colony grows; the dialysis raw paper layer has the function of shielding microorganisms and dust invasion.
As a further improvement of the utility model, the bi-component hot rolled non-woven fabric layer is formed by long fibers prepared from any two materials of polyethylene, polypropylene and polyethylene terephthalate through melt spinning, and the gram weight is 20-50 g/m 2 。
As a further improvement of the present utility model, the long fibers have a diameter of 10-25 μm, a transverse tensile strength of 0.3-1.5 KN/m, a longitudinal tensile strength of 1.5-5.5 KN/m, a transverse tear strength of 3000-6000 mN, a longitudinal tear strength of 3000-7000 mN, and a hydrostatic pressure resistance of 20-25 cmH 2 O; the bi-component hot-rolled non-woven fabric layer has the function of water repellency, and when in hot-rolling compounding, the temperature is set between two softening points of the bi-component, so that the inner surface layer of the packaging material can be further bonded with the dialysis raw paper layer to further reduce the peeling risk, the heat-sealing effect is better, the fiber structure of the non-woven fabric can be maintained, the air permeability of the packaging material is not influenced, and the wear resistance and tear resistance performance strength of the packaging material can be further enhanced.
As a further improvement of the utility model, the first hot melt adhesive layer and the second hot melt adhesive layer are made of any one material of polyolefin and ethylene-vinyl acetate copolymer, and are made of hot melt adhesive by a process of spraying or scraping adhesive, and play a role of bonding the layers, and the adhesive amount is 2.5-5 g/m 2 。
As a further improvement of the utility model, the diameter of the dot-shaped structures in the adhesive structure is 0.06-0.6 mm, the distance between adhesive dots is 0.5-2.5 mm, the width of the irregular strip-shaped structures in the adhesive structure is 0.23-2.3 mm, the length is 2.2-22 mm, the distance between adhesive tapes in the width direction is 1-5 mm, and the distance between adhesive tapes in the length direction is 2-10 mm; the dot-shaped or irregular strip-shaped adhesive structures can effectively bond all layers, and meanwhile, the air permeability of the packaging material is not affected; the ethylene oxide gas can smoothly enter the packaging bag/box during sterilization, so that the effective sterilization of the medical instrument package is realized, the ethylene oxide gas can be resolved after the sterilization is finished, and the damage to human bodies caused by the residual ethylene oxide gas is reduced or avoided.
As a further improvement of the utility model, the medical packaging material has the transverse tensile strength of 4.5-11 KN/m, the longitudinal tensile strength of 9-19 KN/m, the transverse tear strength of 4000-10000 mN, the longitudinal tear strength of 4000-11000 mN and the hydrostatic pressure resistance of 105-130 cmH 2 O, the air permeability is more than 1.4 mm/s, the surface of the packaging material is smooth, the strength is high, the packaging material has the functions of water repellency, wear resistance, tear resistance, microorganism and dust shielding, and the heat sealing effect is better; meanwhile, the high-strength hot-rolled non-woven fabric layer and the bi-component hot-rolled non-woven fabric layer of the medical packaging material are both composed of non-woven fabrics with long fiber structures, so that falling of fiber scraps is avoided, and the cleanliness of medical instrument packages is effectively maintained.
The beneficial effects of the utility model are as follows:
1. the high-strength hot-rolled non-woven fabric layer of the medical packaging material provided by the utility model is made of a hydrophobic material, has the characteristic of water repellency, has a more compact fiber structure after a hot rolling process, and increases the wear resistance and tear resistance of the non-woven fabric.
2. The dialysis raw paper layer of the medical packaging material provided by the utility model can effectively shield microorganisms and dust, so that the packaging material has a bacteria-blocking function, thereby effectively prolonging the period of aseptic packaging and reducing the pollution risk of medical instrument packages.
3. When the bi-component hot-rolled non-woven fabric layer of the medical packaging material is subjected to hot rolling compounding, the temperature is set between two softening points of the bi-components, so that the inner surface layer of the packaging material can be further bonded with the dialysis raw paper layer to reduce the peeling risk, the fiber structure of the non-woven fabric can be maintained, the air permeability of the packaging material is not affected, and the wear resistance and tear resistance performance strength of the packaging material can be further enhanced.
4. The dot-shaped or irregular strip-shaped adhesive structures of the first hot melt adhesive bonding layer and the second hot melt adhesive bonding layer of the medical packaging material provided by the utility model can ensure that the high-strength hot rolled non-woven fabric layer, the dialysis raw paper layer and the bi-component hot rolled non-woven fabric layer have good air permeability, and the ethylene oxide gas can smoothly enter the packaging bag/box during sterilization, so that the effective sterilization of medical equipment packages is realized, the ethylene oxide gas can be resolved after the sterilization is finished, and the damage to human bodies caused by the residual ethylene oxide gas is reduced or avoided.
5. The medical packaging material provided by the utility model has the advantages of smooth surface, high strength, water repellency, abrasion resistance, tearing resistance, microorganism and dust shielding, and better heat sealing effect.
6. The high-strength hot-rolled non-woven fabric layer and the bi-component hot-rolled non-woven fabric layer of the medical packaging material provided by the utility model are both composed of non-woven fabrics with long fiber structures, so that the falling of fiber scraps is avoided, and the cleanliness of medical instrument packages is effectively maintained.
7. The medical packaging material is obtained by one-time coating, compounding and hot rolling of a high-strength hot-rolled non-woven fabric layer, a first hot-melt adhesive bonding layer, a dialysis raw paper layer, a second hot-melt adhesive bonding layer and a double-component hot-rolled non-woven fabric layer, and the production process is environment-friendly, so that the risk of harm to operators and environment caused by solvent volatilization in the traditional manufacturing method is effectively reduced.
8. The medical packaging material is obtained by one-time coating, compounding and hot rolling, is environment-friendly, pollution-free, simple in production process and easy to operate, and has good application prospect in the field of medical instrument packaging materials.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of the overall structure of a medical packaging material.
FIG. 2 is an electron micrograph of a high strength hot rolled nonwoven layer of a medical packaging material.
Fig. 3 is an electron microscope photograph of a dialysis raw paper layer of the medical packaging material.
Fig. 4 is a schematic view of a dot structure or an irregular strip structure of the hot melt adhesive layer of the medical packaging material after adhesive spraying.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in figure 1, the medical packaging material is prepared by coating and compounding by a hot melt adhesive coating compounding machine at one time, and hot rolling by a high-pressure double-light roller hot rolling mill, wherein the thickness is 0.17-0.40 mm, and the gram weight is 95-210 g/m 2 The high-strength hot-rolled non-woven fabric layer 1, the first hot-melt adhesive layer 2, the dialysis raw paper layer 3, the second hot-melt adhesive layer 4 and the double-component hot-rolled non-woven fabric layer 5 with the thickness of 0.05-0.12 mm are sequentially included from outside to inside; the first hot melt adhesive layer 2 and the second hot melt adhesive layer 4 are respectively provided with an adhesive structure with an adhesive effect, and the adhesive structures are dot structures or irregular strip structures.
The high-strength hot-rolled non-woven fabric layer 1 has a random and closely arranged fiber structure, as shown in fig. 2; the two-component hot-rolled non-woven fabric layer 5 has a fiber structure which is irregularly and tightly arranged; the dialysis raw paper layer 3 is a flat superfine fiber structure which is arranged irregularly and tightly, as shown in figure 3.
The high-strength hot-rolled non-woven fabric layer 1 is made of any one material of polypropylene and polyethylene terephthalateThe prepared long fiber has a gram weight of 20-80 g/m 2 The long fiber has a diameter of 10-30 μm, a transverse tensile strength of 1-4.5 KN/m, a longitudinal tensile strength of 2-8 KN/m, a transverse-longitudinal tear strength of 1000-4000 mN, and a hydrostatic pressure resistance of 25-35 cmH 2 O, and after abrasion resistance test for 125 times, the surface has no fuzzing phenomenon.
The high-strength hot-rolled non-woven fabric layer 1 is composed of long fibers made of any two materials of polyethylene, polypropylene and polyethylene terephthalate, and has a gram weight of 20-80 g/m 2 The long fiber has a diameter of 10-25 mu m, a transverse tensile strength of 1-4 KN/m, a longitudinal tensile strength of 2-7 KN/m, a transverse and longitudinal tear strength of 1000-3500 mN, and no fuzzing phenomenon on the surface after abrasion resistance test for 125 times.
The dialysis raw paper layer 3 is prepared from cellulose fiber by pulp mixing and papermaking process, and has thickness of 0.07-0.12 mm and gram weight of 50-70 g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The cellulose fiber has a width of 7-25 μm, a thickness of 0.5-3 μm, and a hydrostatic pressure resistance of 60-80 cmH 2 O, the transverse tensile strength is 3-5 KN/m, the longitudinal tensile strength is 5-7 KN/m, the transverse and longitudinal tear strength is 80-100 mN, and the microbial barrier test shows that the microbial colony grows.
The bi-component hot rolled non-woven fabric layer 5 is made of long fibers made of any two materials of polyethylene, polypropylene and polyethylene terephthalate through melt spinning, and has the gram weight of 20-50 g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The long fiber has a diameter of 10-25 μm, a transverse tensile strength of 0.3-1.5 KN/m, a longitudinal tensile strength of 1.5-5.5 KN/m, a transverse tear strength of 3000-6000 mN, a longitudinal tear strength of 3000-7000 mN, and a hydrostatic pressure resistance of 20-25 cmH 2 O has the function of water repellency and better heat sealing effect.
The first hot melt adhesive layer 2 and the second hot melt adhesive layer 4 are made of any one material of polyolefin and ethylene-vinyl acetate copolymer, the first hot melt adhesive layer 2 and the second hot melt adhesive layer 4 are made of hot melt adhesive through the process of glue spraying or glue scraping, the effect of bonding the layers is achieved, and the adhesive amount is 2.5-5 g/m 2 The diameter of the dot-shaped structure in the adhesive structure is 0.06-0.6 mm, the distance between the adhesive dots is 0.5-2.5 mm, and the adhesiveThe irregular strip structure in the structure has a width of 0.23-2.3 mm, a length of 2.2-22 mm, a distance between the adhesive strips in the width direction of 1-5 mm, and a distance between the adhesive strips in the length direction of 2-10 mm, as shown in fig. 4.
The medical packaging material prepared by the application has the transverse tensile strength of 4.5-11 KN/m, the longitudinal tensile strength of 9-19 KN/m, the transverse tear strength of 4000-10000 mN, the longitudinal tear strength of 4000-11000 mN and the hydrostatic pressure resistance of 105-130 cmH 2 O, the air permeability is greater than 1.4 mm/s, the surface of the packaging material is smooth, the strength is high, the packaging material has the functions of water repellency, abrasion resistance, tearing resistance, good air permeability, microorganism and dust shielding, and meanwhile, the packaging material has better heat sealing effect, environmental protection, no pollution, simple production process, easy operation and good application prospect in the field of medical instrument packaging materials.
It should be understood that the foregoing detailed description of the present utility model is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present utility model, and those skilled in the art should understand that the present utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.
It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A medical packaging material is characterized in that the medical packaging material is prepared by coating and compounding once by a hot melt adhesive coating compounding machine, and hot rolling by a high-pressure double-smooth-roller hot rolling mill, wherein the thickness is 0.17-0.40 mm, and the gram weight is 95-210 g/m 2 The high-strength hot-rolled non-woven fabric layer (1), the first hot-melt adhesive layer (2), the dialysis raw paper layer (3), the second hot-melt adhesive layer (4) and the bi-component hot-rolled non-woven fabric layer (5) with the thickness of 0.05-0.12 mm are sequentially included from outside to inside; the high-strength hot-rolled non-woven fabric layer (1) and the bi-component hot-rolled non-woven fabric layer (5) are provided with irregularly-closely arranged fiber structures, the dialysis raw paper layer (3) is irregularly-closely arranged flat superfine fiber structures, adhesive structures playing an adhesive role are arranged in the first hot-melt adhesive layer (2) and the second hot-melt adhesive layer (4), and the adhesive structures are dot structures or irregular strip structures.
2. The medical packaging material according to claim 1, characterized in that the high-strength hot-rolled nonwoven layer (1) is composed of long fibers made of any one of polypropylene and polyethylene terephthalate, and has a gram weight of 20-80 g/m 2 The long fiber has a diameter of 10-30 μm, a transverse tensile strength of 1-4.5 KN/m, a longitudinal tensile strength of 2-8 KN/m, a transverse-longitudinal tear strength of 1000-4000 mN, and a hydrostatic pressure resistance of 25-35 cmH 2 O。
3. The medical packaging material according to claim 1, wherein the high-strength hot-rolled nonwoven fabric layer (1) is composed of long fibers made of any two materials of polyethylene, polypropylene and polyethylene terephthalate, and has a gram weight of 20-80 g/m 2 The long fiber diameter is 10-25 μm, the transverse tensile strength is 1-4 KN/m, the longitudinal tensile strength is 2-7 KN/m, and the transverse and longitudinal tear strength is 1000-3500 mN.
4. The medical packaging material according to claim 1, wherein the dialysis base paperThe layer (3) is prepared from cellulose fiber by pulp mixing and papermaking process, and has thickness of 0.07-0.12 mm and gram weight of 50-70 g/m 2 。
5. The medical packaging material according to claim 4, wherein the cellulose fiber has a width of 7-25 μm, a thickness of 0.5-3 μm, and a hydrostatic pressure resistance of 60-80 cmH 2 O, the transverse tensile strength is 3-5 KN/m, the longitudinal tensile strength is 5-7 KN/m, and the transverse and longitudinal tear strength is 80-100 mN.
6. The medical packaging material according to claim 1, wherein the bicomponent hot-rolled non-woven fabric layer (5) is composed of long fibers made of any two materials of polyethylene, polypropylene and polyethylene terephthalate by melt spinning, and has a gram weight of 20-50 g/m 2 。
7. The medical packaging material according to claim 6, wherein the long fibers have a diameter of 10-25 μm, a transverse tensile strength of 0.3-1.5 KN/m, a longitudinal tensile strength of 1.5-5.5 KN/m, a transverse tear strength of 3000-6000 mN, a longitudinal tear strength of 3000-7000 mN, and a hydrostatic pressure resistance of 20-25 cmH 2 O。
8. The medical packaging material according to claim 1, wherein the first and second hot-melt adhesive layers (2, 4) are made of any one of polyolefin and ethylene-vinyl acetate copolymer, the first and second hot-melt adhesive layers (2, 4) are made of hot-melt adhesive by a process of spraying or scraping adhesive, and function as an adhesive for each layer, and the adhesive amount is 2.5-5 g/m 2 。
9. The medical packaging material according to claim 8, wherein the dot-like structures in the adhesive structure have a diameter of 0.06-0.6 mm, a distance between adhesive dots of 0.5-2.5 mm, the irregular stripe-like structures in the adhesive structure have a width of 0.23-2.3 mm, a length of 2.2-22 mm, a distance between adhesive tapes in the width direction of 1-5 mm, and a distance between adhesive tapes in the length direction of 2-10 mm.
10. The medical packaging material according to any one of claims 1-9, wherein the medical packaging material has a transverse tensile strength of 4.5-11 KN/m, a longitudinal tensile strength of 9-19 KN/m, a transverse tear strength of 4000-10000 mN, a longitudinal tear strength of 4000-11000 mN, and a hydrostatic pressure resistance of 105-130 cmH 2 O, the air permeability is more than 1.4 mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321445829.3U CN220298015U (en) | 2023-06-08 | 2023-06-08 | Medical packaging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321445829.3U CN220298015U (en) | 2023-06-08 | 2023-06-08 | Medical packaging material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220298015U true CN220298015U (en) | 2024-01-05 |
Family
ID=89345039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321445829.3U Active CN220298015U (en) | 2023-06-08 | 2023-06-08 | Medical packaging material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220298015U (en) |
-
2023
- 2023-06-08 CN CN202321445829.3U patent/CN220298015U/en active Active
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