Bamboo cellulose film sealing tape

Abstract

The utility model relates to a kind of bamboo cellulose film sealing tape, solve the VOC content of existing degradable sealing tape is high, production safety control risk is high, the problem of high cost.It includes release layer, substrate layer and adhesive layer, substrate layer is bamboo cellulose film substrate layer, the two sides of bamboo cellulose film substrate layer are coated with first oily acrylic resin isolation layer and second oily acrylic resin isolation layer, release layer is located in the side of first oily acrylic resin isolation layer, adhesive layer is located in the side of second oily acrylic resin isolation layer, and adhesive layer is water-based adhesive.Substrate layer is bamboo cellulose film substrate layer, the two sides of bamboo cellulose film substrate layer are coated with first oily acrylic resin isolation layer and second oily acrylic resin isolation layer, avoid the contact of bamboo cellulose film substrate layer and moisture, not wrinkled, in addition adhesive layer is water-based adhesive, so that VOC content is low, non-flammable, production safety risk is low.

Description

Technical Field

[0001] This utility model relates to the field of rubber-type adhesive technology, specifically to a bamboo cellulose film sealing tape. Background Technology

[0002] Petroleum-based film sealing tapes, which are difficult to degrade, are gradually being replaced by biodegradable plant-based film sealing tapes. Currently, most biodegradable sealing tapes on the market use films made of wood fiber (wood pulp) as the base material, coated with oil-based adhesives. Because oil-based adhesives use benzene and ester-based organic solvents, their main drawbacks are as follows: Due to the use of benzene and ester-based organic solvents, the VOC content is relatively high. Benzene and ester-based solvents are flammable substances, posing a high risk to production safety management. Utility Model Content

[0003] The purpose of this invention is to solve the problems of high VOC content, high production safety control risks, and high cost of existing biodegradable sealing tapes.

[0004] The technical solution adopted to solve the technical problem proposed by this utility model is as follows: The bamboo cellulose film sealing tape of this utility model includes a release layer, a substrate layer and an adhesive layer. The substrate layer is a bamboo cellulose film substrate layer. A first oily acrylic resin isolation layer and a second oily acrylic resin isolation layer are respectively coated on both sides of the bamboo cellulose film substrate layer. The release layer is disposed on one side of the first oily acrylic resin isolation layer, and the adhesive layer is disposed on one side of the second oily acrylic resin isolation layer. The adhesive layer is a water-based adhesive.

[0005] The technical solutions that further define this utility model include: The water-based adhesive is a water-based polyacrylate pressure-sensitive adhesive.

[0006] The coating thickness of the first and second oil-based acrylic resin isolation layers is 8-12 μm.

[0007] The thickness of the bamboo cellulose membrane substrate layer is 28±1um.

[0008] The release layer is 3-5 μm thick.

[0009] The adhesive layer has a thickness of 17-28 μm.

[0010] Through the above technical solution, the beneficial effects of this utility model are as follows: The substrate layer of the bamboo cellulose film sealing tape of this utility model is a bamboo cellulose film substrate layer. The two sides of the bamboo cellulose film substrate layer are respectively coated with a first oily acrylic resin isolation layer and a second oily acrylic resin isolation layer, which prevents the bamboo cellulose film substrate layer from contacting moisture and will not wrinkle. In addition, the adhesive layer is a water-based adhesive, which has low VOC content, is non-flammable, and has low production safety risk. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of a bamboo cellulose film sealing tape according to the present invention. Detailed Implementation

[0012] The structure of this utility model will be further described below with reference to the accompanying drawings.

[0013] Reference Figure 1A bamboo cellulose film sealing tape includes a release layer 1, a substrate layer 2, and an adhesive layer 3. The substrate layer 2 is a bamboo cellulose film substrate layer. A first oil-based acrylic resin isolation layer 4 and a second oil-based acrylic resin isolation layer 5 are coated on both sides of the bamboo cellulose film substrate layer. The release layer 1 is located on one side of the first oil-based acrylic resin isolation layer to prevent the bamboo cellulose film substrate layer from contacting moisture and wrinkling. The adhesive layer 3 is located on one side of the second oil-based acrylic resin isolation layer and is a water-based adhesive. In this embodiment, the release layer thickness is 3-5 μm. The adhesive layer thickness is 17-28 μm. In this embodiment, the bamboo cellulose film substrate layer thickness is 28 ± 1 μm. Compared with wood cellulose film substrate layers, bamboo cellulose film substrate layers reduce the use of bleach; have lower chemical oxygen demand; lower energy consumption; lower raw material costs; and higher tensile strength. Bamboo fiber itself has fewer impurities, requiring less bleach (such as hydrogen peroxide) when preparing bamboo pulp, resulting in a lower risk of chemical residues (such as chlorine-based substances) in the finished product compared to wood pulp films. Wood contains a higher proportion of lignin and hemicellulose, requiring more chemical reagents for bleaching. Bamboo fiber production consumes 15%-25% less energy and emits less carbon than wood pulp. Pure bamboo pulp film (without non-degradable modifiers) can completely degrade into carbon dioxide and water in natural environments (such as soil and composting conditions) within 3-6 months, leaving no plastic microparticle residue. Pure wood pulp film has a slightly longer degradation cycle than bamboo pulp film (approximately 4-8 months). Bamboo cellulose membrane substrate layers wrinkle and become unusable when exposed to water or in high humidity environments. To enable the application of water-based adhesives to the bamboo cellulose membrane, a double-sided isolation layer is applied to the bamboo cellulose membrane substrate layer, adding a first oil-based acrylic resin isolation layer 4 and a second oil-based acrylic resin isolation layer 5 to prevent moisture from contacting the film. The isolation layer uses oil-based acrylic resin, coated on the substrate surface to form a very thin (8-12µm thick) isolation layer. In this embodiment, the water-based adhesive is a water-based polyacrylate pressure-sensitive adhesive. Water-based adhesives, low VOC content, non-flammable, and low production safety risks.

[0014] The following is an experimental comparison between directly coating the bamboo cellulose membrane substrate layer with oil-based polyacrylate adhesive (see Comparative Example 1) and the bamboo cellulose film sealing tape of the present invention (see Comparative Test 1): Comparative Example 1: A transparent bamboo cellulose membrane substrate layer of the same thickness (28um) is used, and oily polyacrylate adhesive of 18-20g / ㎡ is directly applied to both sides, then dried and rolled up.

[0015] Comparative Test 1: An oil-based acrylic resin is applied to both sides of a transparent bamboo cellulose membrane substrate layer of the same thickness (28µm), followed by an isolation layer and a water-based adhesive layer, for a total thickness of 50µm.

[0016] The results of the comparison between Example 1 and Comparison Test 1 are shown in the table below.

[0017] Therefore, it is evident that water-based polyacrylic acid ester adhesives pose a lower safety risk than oil-based polyacrylate adhesives during production. 1. The difference between "water-based" and "oil-based" adhesives lies essentially in the dispersion medium, and the physicochemical properties of the medium (such as flammability, toxicity, and volatility) are the core source of safety risk. 2. Water-based polyacrylic acid resin (adhesive component) uses water as the dispersion medium, stabilizing to form an emulsion (similar to milk) through emulsifiers. Simultaneously, water, as the dispersion medium, does not release toxic VOCs, preventing respiratory irritation from solvent vapors inhalation. 3. Oil-based polyacrylic acid resin (adhesive) needs to be dissolved or dispersed in volatile organic solvents (such as toluene, ethyl acetate, acetone, etc.), with solvent content reaching 30%-60%, and most solvents being flammable and toxic substances. This core difference directly leads to a stratification of safety risks. The "non-flammable, non-toxic, and non-volatile" characteristics of water fundamentally avoid the multiple risks associated with solvents in oil-based adhesives. Oily solvents (such as toluene and ethyl acetate) are highly volatile and release toxic VOCs. Long-term inhalation by workers can cause irritation to the eyes, nose, and throat, as well as headaches and nausea.

[0018] Although specific embodiments of the present invention have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of the present invention. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of the present invention.

Claims

1. A bamboo cellulose film sealing tape, comprising a release layer, a substrate layer, and an adhesive layer, characterized in that: The substrate layer is a bamboo cellulose membrane substrate layer. A first oil-based acrylic resin isolation layer and a second oil-based acrylic resin isolation layer are coated on both sides of the bamboo cellulose membrane substrate layer, respectively. The release layer is disposed on one side of the first oil-based acrylic resin isolation layer, and the adhesive layer is disposed on one side of the second oil-based acrylic resin isolation layer. The adhesive layer is a water-based adhesive.

2. The bamboo cellulose film sealing tape according to claim 1, wherein: the bamboo cellulose film sealing tape is used for sealing the box. The water-based adhesive is a water-based polyacrylate pressure-sensitive adhesive.

3. The bamboo cellulose film sealing tape as described in claim 1, characterized in that: The coating thickness of the first and second oil-based acrylic resin isolation layers is 8-12 μm.

4. The bamboo cellulose film sealing tape according to claim 1, wherein: the bamboo cellulose film sealing tape is used for sealing the box. The thickness of the bamboo cellulose membrane substrate layer is 28±1um.

5. The bamboo cellulose film sealing tape as described in claim 1, characterized in that: The release layer is 3-5 μm thick.

6. The bamboo cellulose film sealing tape according to claim 1, wherein: the bamboo cellulose film sealing tape is used for sealing the box. The adhesive layer has a thickness of 17-28 μm.

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