Sterilization type sealable gummed paper

Abstract

The utility model belongs to the technical field of medical packaging materials, and particularly relates to sterilization type sealable gummed paper which comprises a paper body, a glue layer, a sterilization layer and a sealing structure. The paper body is composed of multiple layers of composite structures and comprises a base material layer, a supporting layer and air holes. The adhesive layer is coated on the surface of one side of the paper body and comprises a composite coating of a hot melt adhesive and a pressure-sensitive adhesive; the sterilization layer is embedded into the paper body and consists of a nano-silver particle layer and a zinc oxide coating; the sealing structure is located on the edge of the adhesive layer and comprises a protruding sealing strip and a magnetic adsorption strip. Through the multi-layer composite structure, the paper body and the sterilization layer are used for achieving ventilation and bacterium blocking, the double-glue composite coating of the glue layer is used for giving consideration to high-temperature stability and instant bonding, the nano-silver particle layer and the zinc oxide coating are used for synergistically inhibiting bacteria, and the sealing structure is used for achieving physical and magnetic double sealing. The problems that traditional gummed paper is contradictory in air permeability and sealing performance, single in sterilization effect and poor in adaptability are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of medical packaging materials technology, specifically a sterilizable sealable coated paper. Background Technology

[0002] Currently, medical device packaging bags are made of sterile coated paper. This sterile coated paper can pass through the air while filtering out bacteria. During the preparation of sterile coated paper, ethylene oxide or radiation sterilization is used, and then glue is applied to the coated paper so that the coated paper can be bonded together to form a packaging bag.

[0003] Traditional medical packaging materials, such as ordinary coated paper and plastic sealed bags, have the following drawbacks:

[0004] The contradiction between breathability and sealing: Ordinary materials need to be completely sealed to prevent bacteria, but residual gas cannot escape after the instruments are sterilized, which can easily cause the packaging to burst.

[0005] Single sterilization effect: It relies solely on external sterilization processes, and the packaging itself has no antibacterial ability. Once the seal fails, it is prone to secondary contamination.

[0006] Poor adaptability: Existing sealing structures, such as rubber strips and zippers, have low compatibility with irregular instruments, and repeated opening and closing can easily reduce the sealing performance.

[0007] This invention solves the above problems through a composite structure design. Utility Model Content

[0008] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0009] Therefore, the technical solution adopted by this utility model is as follows:

[0010] A sterilizable sealable coated paper includes: a paper body, an adhesive layer, a sterilization layer, and a sealing structure; the paper body is composed of a multi-layer composite structure, including a substrate layer, a support layer, and vents; the adhesive layer is coated on one side surface of the paper body and comprises a composite coating of hot melt adhesive and pressure-sensitive adhesive; the sterilization layer is embedded inside the paper body and consists of a layer of nano-silver particles and a zinc oxide coating; the sealing structure is located at the edge of the adhesive layer and includes a raised sealing strip and a magnetic adsorption strip.

[0011] In a preferred embodiment, the present invention can be further configured such that the substrate layer of the paper body is made of medical-grade non-woven fabric;

[0012] The support layer is a honeycomb polypropylene mesh;

[0013] The vent holes have a diameter of 0.1-0.5 μm and are evenly distributed.

[0014] The substrate layer and the support layer are fixed by ultrasonic welding.

[0015] In a preferred embodiment, the present invention can be further configured such that the hot melt adhesive of the adhesive layer is an ethylene-vinyl acetate copolymer;

[0016] The pressure-sensitive adhesive is an acrylic adhesive;

[0017] The hot melt adhesive and pressure-sensitive adhesive are applied alternately in a 1:2 ratio to form a wavy texture.

[0018] In a preferred embodiment, the present invention can be further configured such that: the nano-silver particle layer is loaded on the surface of the substrate layer, with a concentration of 5-10 mg / m³. 2 ;

[0019] The zinc oxide coating covers the grid gaps of the support layer and has a thickness of 50-100 nm.

[0020] In a preferred embodiment, the present invention can be further configured such that the raised sealing strip is a silicone structure with a height of 0.5-1mm and arranged in a continuous ring.

[0021] The magnetic adsorption strip is a flexible neodymium iron boron magnetic strip, embedded in the raised sealing strip.

[0022] In a preferred embodiment, the present invention may be further configured to include a release film covering the adhesive layer.

[0023] In a preferred embodiment, the present invention may be further configured to include an anti-slip textured layer covering the outer side of the nano-silver particle layer, wherein the anti-slip textured layer is a cross-grid protrusion.

[0024] In a preferred embodiment, the present invention can be further configured such that: a sterilization indicator label is provided on the outer side of the anti-slip textured layer, the sterilization indicator label being printed with color-changing ink to respond to changes in ethylene oxide concentration.

[0025] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0026] 1. This utility model utilizes a multi-layer composite structure to achieve air permeability and bacterial inhibition through the paper body and sterilization layer, a double-adhesive composite coating layer to balance high-temperature stability and instant adhesion, a nano-silver particle layer and a zinc oxide coating to synergistically inhibit bacteria, and a sealing structure to achieve both physical and magnetic sealing. This effectively solves the problems of the contradiction between air permeability and sealing, the single sterilization effect, and poor adaptability of traditional coated paper.

[0027] 2. This utility model improves the usability of coated paper by using release film, anti-slip textured layer, sterilization label, etc. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the sterilizable sealable adhesive paper of this utility model.

[0029] Figure label:

[0030] 1. Paper body; 11. Substrate layer; 12. Support layer; 13. Ventilation pores; 2. Adhesive layer; 21. Hot melt adhesive; 22. Pressure-sensitive adhesive; 3. Sterilization layer; 31. Nano silver particle layer; 32. Zinc oxide coating; 4. Sealing structure; 41. Raised sealing strip; 42. Magnetic adsorption strip; 5. Release film; 6. Anti-slip textured layer; 7. Sterilization indicator label. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0032] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0033] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a sterilizable sealable coated paper.

[0034] Combination Figure 1 As shown, the present invention provides a sterilizable sealable coated paper, comprising: a paper body 1, an adhesive layer 2, a sterilization layer 3, and a sealing structure 4;

[0035] The paper body 1 is composed of a multi-layer composite structure, including a substrate layer 11, a support layer 12, and air pores 13;

[0036] Specifically, the substrate layer 11 of the paper body 1 is made of medical-grade non-woven fabric that conforms to the YY / T 0698 standard to ensure biocompatibility;

[0037] The support layer 12 is a honeycomb polypropylene mesh. The honeycomb polypropylene mesh of the support layer 12 is formed by compression molding and has a porosity of ≥80% to ensure air permeability.

[0038] The vent holes 13 have a diameter of 0.1-0.5μm and are evenly distributed, which is smaller than the 0.5-2μm of common bacteria such as Escherichia coli. The even distribution is achieved by laser drilling process.

[0039] The substrate layer 11 and the support layer 12 are fixed by ultrasonic welding. The non-woven fabric and the polypropylene mesh are combined by ultrasonic welding at a frequency of 20kHz and a power of 800W, which can prevent the adhesive from clogging the vent holes 13.

[0040] The adhesive layer 2 is coated on one side surface of the paper body 1 and includes a composite coating of hot melt adhesive 21 and pressure-sensitive adhesive 22;

[0041] Specifically, the hot melt adhesive 21 of the adhesive layer 2 is ethylene-vinyl acetate copolymer (EVA);

[0042] The pressure-sensitive adhesive 22 is an acrylic adhesive;

[0043] The hot melt adhesive 21 and pressure-sensitive adhesive 22 are applied alternately in a 1:2 ratio to form a wavy texture, which can increase the contact area and improve the adhesion uniformity.

[0044] The sterilization layer 3 is embedded inside the paper body 1 and is composed of a nano-silver particle layer 31 and a zinc oxide coating 32.

[0045] Specifically, the nano-silver particle layer 31 is loaded on the surface of the substrate layer 11 at a concentration of 5-10 mg / m³. 2 The nano-silver particle layer 31 is loaded onto the surface of the nonwoven fabric fiber using electrospinning technology. The nano-silver particle layer 31 has a particle size of 20-50nm, a large specific surface area, and can slowly release Ag. + Ion release cycle ≥30 days;

[0046] The zinc oxide coating 32 covers the grid gaps of the support layer 12 and has a thickness of 50-100 nm. The zinc oxide coating 32 fills the grid gaps using the sol-gel method to form a broad-spectrum antibacterial barrier with an inhibition rate of ≥99.9% against Gram-positive / negative bacteria. Under ultraviolet light excitation, the zinc oxide coating 32 generates hydroxyl radicals ·OH, which synergistically kill antibiotic-resistant bacteria such as MRSA with nano-silver.

[0047] Specifically, the sealing structure 4 is located at the edge of the adhesive layer 2 and includes a raised sealing strip 41 and a magnetic adsorption strip 42;

[0048] The raised sealing strip 41 is made of silicone, with a height of 0.5-1mm, and is arranged in a continuous ring.

[0049] The magnetic adsorption strip 42 is a flexible neodymium iron boron magnetic strip, which is embedded in the raised sealing strip 41.

[0050] The raised sealing strip 41 deforms under pressure to fill the gap and seal with a pressure ≥0.1MPa. The magnetic adsorption strip 42 uses a flexible magnetic strip with a magnetic induction intensity of 0.2-0.5T to assist in quick alignment and closure.

[0051] Furthermore, the raised sealing strip 41 has a trapezoidal cross-section with a bottom width of 2mm and a top width of 0.5mm, and undergoes radial deformation when compressed.

[0052] Furthermore, it also includes a release film 5 covering the adhesive layer 2. The release film 5 is made of PET film with a thickness of 50μm, has an easy-tear notch, is formed by laser cutting, and has a tear force ≤1N.

[0053] Furthermore, it also includes an anti-slip textured layer 6 covering the outside of the nano-silver particle layer 31. The anti-slip textured layer 6 is a cross-grid protrusion with a surface roughness Ra = 3.2-6.3μm and a friction coefficient ≥0.4, which prevents the surgical gloves from slipping during operation.

[0054] Furthermore, a sterilization indicator label 7 is provided on the outer side of the anti-slip textured layer 6. The sterilization indicator label 7 is printed with color-changing ink to respond to changes in ethylene oxide concentration. The sterilization indicator label 7 contains a pH-sensitive dye (such as bromocresol purple), which changes from yellow to purple when exposed to ethylene oxide gas. The color difference ΔE≥5 facilitates visual identification.

[0055] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sterilizable, sealable coated paper, characterized in that, include: Paper body (1), adhesive layer (2), sterilization layer (3) and sealing structure (4); The paper body (1) is composed of a multi-layer composite structure, including a substrate layer (11), a support layer (12) and air vents (13); The adhesive layer (2) is coated on one side surface of the paper body (1) and includes a composite coating of hot melt adhesive (21) and pressure-sensitive adhesive (22); The sterilization layer (3) is embedded inside the paper body (1) and is composed of a nano silver particle layer (31) and a zinc oxide coating (32); The sealing structure (4) is located at the edge of the adhesive layer (2) and includes a raised sealing strip (41) and a magnetic adsorption strip (42).

2. The sterilizable sealable coated paper according to claim 1, characterized in that, The substrate layer (11) of the paper body (1) is made of medical-grade non-woven fabric; The support layer (12) is a honeycomb polypropylene mesh; The vent holes (13) have a diameter of 0.1-0.5 μm and are evenly distributed; The substrate layer (11) and the support layer (12) are fixed by ultrasonic welding.

3. The sterilizable sealable coated paper according to claim 1, characterized in that, The hot melt adhesive (21) of the adhesive layer (2) is ethylene-vinyl acetate copolymer (EVA); The pressure-sensitive adhesive (22) is an acrylic adhesive; The hot melt adhesive (21) and pressure-sensitive adhesive (22) are applied alternately in a 1:2 ratio to form a wavy texture.

4. The sterilizable sealable coated paper according to claim 1, characterized in that, The nano-silver particle layer (31) is loaded on the surface of the substrate layer (11) at a concentration of 5-10 mg / m³. 2 ; The zinc oxide coating (32) covers the grid gaps of the support layer (12) and has a thickness of 50-100 nm.

5. The sterilizable sealable coated paper according to claim 1, characterized in that, The raised sealing strip (41) is made of silicone, with a height of 0.5-1mm, and is arranged in a continuous ring. The magnetic adsorption strip (42) is a flexible neodymium iron boron magnetic strip, which is embedded in the raised sealing strip (41).

6. The sterilizable sealable coated paper according to claim 1, characterized in that, It also includes a release film (5) covering the adhesive layer (2).

7. The sterilizable sealable coated paper according to claim 1, characterized in that, It also includes an anti-slip textured layer (6) covering the outside of the nano-silver particle layer (31), the anti-slip textured layer (6) being a cross-grid protrusion.

8. The sterilizable sealable coated paper according to claim 7, characterized in that, The anti-slip textured layer (6) has a sterilization indicator label (7) on its outer side. The sterilization indicator label (7) is printed with color-changing ink and is used to respond to changes in ethylene oxide concentration.

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