JP3242506U - biodegradable adhesive tape - Google Patents

Abstract

Kind Code: A1 A biodegradable adhesive tape is provided which is excellent in biodegradability, can be decomposed into water and carbon dioxide in a natural environment by composting after disposal, and does not cause secondary pollution of the environment. A biodegradable adhesive tape comprising a release layer 1, a substrate layer 2, and an adhesive layer 3 which are sequentially laminated, wherein the substrate layer is a cellulose film layer and an adhesive. The layer is a water-based pressure sensitive adhesive layer. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to the technical field of adhesive tapes, and more particularly to biodegradable adhesive tapes.

The market application of packaging tape is wide, and many industries cannot give up packaging tape in their daily production life, especially in today's rapid development of the logistics industry, the demand for packaging tape is increasing rapidly. . At present, the base material of packaging tape in the domestic market is mainly made of petroleum-based polypropylene film. Serious. In addition, the corrugated cardboard boxes to which the adhesive tape is attached cannot be beaten directly, and the adhesive tape needs to be separated manually, which causes great inconvenience in collecting the corrugated cardboard boxes.

The purpose of the present invention is to solve the above problems, to have excellent biodegradability, to be decomposed into water and carbon dioxide in the natural environment by composting after disposal, and to biodegrade without secondary pollution of the environment. To provide a flexible adhesive tape.

To achieve the above objects, the present invention provides a biodegradable adhesive tape comprising a release layer, a substrate layer and an adhesive layer which are sequentially laminated, wherein the substrate layer is a cellulose film. layer, and the pressure-sensitive adhesive layer is made of a water-based pressure-sensitive adhesive.

By adopting the above technical means, the cellulose film is biodegradable, and by using the cellulose film layer as the base material layer, the biodegradable pressure-sensitive adhesive tape according to the present invention is environmentally friendly after use. In addition to being non-staining, excellent cellulose films have tensile strength, stretchability, resistance to high temperature deformation, and excellent printing and composite properties.

A release agent is applied to one side of the base material layer to form a release layer, and a water-based adhesive is applied to the other side of the base material layer, then transported to an oven and dried for biodegradation. You can get the adhesive tape,
Here, the temperature of the oven is 65 to 90 ° C.,
The drying treatment time is 10-15 seconds.

The water absorption of cellulose film is similar to that of ordinary paper, and when it comes into contact with water, it is easily deformed and its toughness is significantly reduced. By drying at 65-90°C for 10-15 seconds, the water content of the water-based pressure-sensitive adhesive permeated into the base layer does not deform the base layer while realizing rapid drying of the water-based pressure-sensitive adhesive. We guarantee that.

Among them, if the oven temperature is less than 65°C, the drying time is long, and the drying time is greater than 20 seconds, and at the same time the drying is completed, the moisture in the water-based pressure-sensitive adhesive penetrates into the base layer, The substrate layer is deformed, which is disadvantageous to the subsequent winding process of the tape and reduces the production efficiency.
Among them, when the temperature in the oven is higher than 90 ° C., the drying time is reduced, but the moisture in the water-based pressure-sensitive adhesive that has penetrated into the base layer deforms the base layer and the edges are deformed. It curls, which is detrimental to the subsequent winding process of the tape and reduces yield.
Among them, when the temperature in the oven is 65 to 90 ° C and the drying treatment time is less than 10 seconds, the base layer hardly deforms, but the water-based pressure-sensitive adhesive cannot be completely dried, and the temperature in the oven is is 65 to 90° C. and the drying treatment time exceeds 15 s, the substrate layer is gradually deformed, which is disadvantageous for the subsequent winding process of the tape and reduces the yield.

Furthermore, in the method for producing a biodegradable adhesive tape, a water-based pressure-sensitive adhesive is applied to the surface of the base material layer by wire bar coating or doctor blade coating.

Furthermore, the humidity of the oven is between 47% and 92%.

By adopting the above technical scheme, the humidity in the oven can be controlled to 47% to 92%, thereby further shortening the drying time and further improving the production efficiency.

Furthermore, by increasing the flow velocity of the air on the side of the adhesive in the oven, the drying time can be further shortened, and thus the production efficiency can be further improved.

By performing a drying process for 10 to 15 seconds at an environmental temperature of 65 to 90°C, the present invention realizes rapid drying of the water-based pressure-sensitive adhesive and prevents the water-based pressure-sensitive adhesive from penetrating the base layer. It ensures that the amount does not deform the base layer, furthermore, the subsequent winding process of the tape can be efficiently performed, and the yield of the biodegradable adhesive tape can be improved.

Compared with the prior art, the beneficial effects of the present invention are as follows. It can be decomposed into water and carbon dioxide in a natural environment, does not cause secondary pollution of the environment, and when the biodegradable adhesive tape according to the present invention is used as a packaging tape, based on its biodegradability, the present invention When recycling corrugated cardboard boxes with such biodegradable adhesive tape attached, it is possible to reduce the adhesive removal process, reduce the recycling cost of cardboard boxes, improve the recycling rate of cardboard boxes, and save natural resources. consumption can be reduced.

1 is a schematic diagram of the structure of a biodegradable adhesive tape according to the present invention; FIG.

In order to facilitate understanding of the technical means, creative features, objectives and effects achieved by the invention, the invention will be further described below with specific drawings.

The drawings attached to this specification, and the structures, ratios, sizes, etc. shown therein are all in accordance with the content disclosed in this specification, and are intended to be understood and read by those skilled in the art. It is used only for and is not used to limit the conditions under which the present invention can be implemented, so it has no substantial technical significance, and any structural modification, change in proportionality, or large The adjustment should be within the range that the technical content disclosed by the invention can cover without affecting the effect that the invention can bring about and the purpose that the invention can achieve. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" cited herein are also descriptive for ease of explanation. is not intended to limit the practicable range of the device, and the change or adjustment of the relative relationship is deemed to be the practicable range of the device if it does not substantially change the technical content. There is

Example 1
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

The water content of the water-based pressure-sensitive adhesive according to this embodiment is 40-50%.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the base layer 2 to form the release layer 1, and the other surface of the base layer 2 is a water-based adhesive layer. After applying with a doctor blade, conveying to an oven and drying treatment to obtain a biodegradable adhesive tape,
where the temperature of the oven is 65°C,
Here, the drying treatment time is 14 seconds.

Here, the oven humidity is 60%.

The biodegradable pressure-sensitive adhesive tape produced by the above method does not deform the base material layer 2 .

Example 2
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

The water content of the water-based pressure-sensitive adhesive according to this embodiment is 40-50%.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the substrate layer 2 to form the release layer 1, and the other surface of the substrate layer 2 is coated with a water-based pressure-sensitive adhesive. After applying the agent layer with a doctor blade, it is transported to an oven and dried to obtain a biodegradable adhesive tape,
where the temperature of the oven is 90°C,
Here, the drying treatment time is 10s.

Here, the oven humidity is 60%.

The biodegradable pressure-sensitive adhesive tape produced by the above method does not deform the base material layer 2 .

Example 3
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

The water content of the water-based pressure sensitive adhesive according to this embodiment is 40-50%.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the substrate layer 2 to form the release layer 1, and the other surface of the substrate layer 2 is coated with a water-based pressure-sensitive adhesive. After applying the agent layer with a doctor blade, it is transported to an oven and dried to obtain a biodegradable adhesive tape,
where the temperature of the oven is 70°C,
Here, the drying treatment time is 13s.

Here, the oven humidity is 60%.

The biodegradable pressure-sensitive adhesive tape produced by the above method does not deform the base material layer 2 .

Example 4
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

The water content of the water-based pressure-sensitive adhesive in this embodiment is 40-50%.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the substrate layer 2 to form the release layer 1, and the other surface of the substrate layer 2 is coated with a water-based pressure-sensitive adhesive. After applying the agent layer with a doctor blade, it is transported to an oven and dried to obtain a biodegradable adhesive tape,
where the temperature of the oven is 40° C.,
Here, the drying treatment time is 22s.

Here, the oven humidity is 60%.

In the above method, the drying treatment time during production is long, deformation occurs in the base layer 2 in the obtained biodegradable adhesive tape, which is disadvantageous for the subsequent winding process of the tape and reduces production efficiency. do.

Example 5
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

The water content of the water-based pressure-sensitive adhesive in this embodiment is 40-50%.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the substrate layer 2 to form the release layer 1, and the other surface of the substrate layer 2 is coated with a water-based pressure-sensitive adhesive. After applying the agent layer with a doctor blade, it is transported to an oven and dried to obtain a biodegradable adhesive tape,
where the temperature of the oven is 95°C,
Here, the drying treatment time is 10s.

Here, the oven humidity is 60%.

The biodegradable pressure-sensitive adhesive tape produced by the above method causes deformation in the base material layer 2, which is disadvantageous for the subsequent winding process of the tape and reduces the yield.

Example 6
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the substrate layer 2 to form the release layer 1, and the other surface of the substrate layer 2 is coated with a water-based pressure-sensitive adhesive. After applying the agent layer with a doctor blade, it is transported to an oven and dried to obtain a biodegradable adhesive tape,
where the temperature of the oven is 70°C,
Here, the drying treatment time is 8s.

Here, the oven humidity is 60%.

In the biodegradable adhesive tape produced by the above method, the base layer 2 is not deformed, but the water-based pressure-sensitive adhesive is not completely dried.

Example 7
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

The water content of the water-based pressure-sensitive adhesive in this embodiment is 40-50%.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the substrate layer 2 to form the release layer 1, and the other surface of the substrate layer 2 is coated with a water-based pressure-sensitive adhesive. After applying the agent layer with a doctor blade, it is transported to an oven and dried to obtain a biodegradable adhesive tape,
where the temperature of the oven is 70°C,
Here, the drying treatment time is 18s.

Here, the oven humidity is 60%.

The biodegradable pressure-sensitive adhesive tape produced by the above method causes deformation in the base material layer 2, which is disadvantageous for the subsequent winding process of the tape and reduces the yield.

Example 8
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

The water content of the water-based pressure sensitive adhesive in this embodiment is 40-50%.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the substrate layer 2 to form the release layer 1, and the other surface of the substrate layer 2 is coated with a water-based pressure-sensitive adhesive. After applying the agent layer with a doctor blade, it is transported to an oven and dried to obtain a biodegradable adhesive tape,
where the temperature of the oven is 65°C,
Here, the drying treatment time is 12s.

Here, the oven humidity is 47%.

The biodegradable pressure-sensitive adhesive tape produced by the above method does not deform the base material layer 2 .

Example 9
As shown in FIG. 1, this embodiment discloses a biodegradable adhesive tape comprising a release layer 1, a base layer 2, and an adhesive layer 3, which are sequentially laminated, and the base layer 2 is a cellulose film layer, and the adhesive layer 3 is made of a water-based pressure-sensitive adhesive.

The water content of the water-based pressure sensitive adhesive in this embodiment is 40-50%.

In the above-described method for producing a biodegradable adhesive tape, a release agent layer is applied to one surface of the substrate layer 2 to form the release layer 1, and the other surface of the substrate layer 2 is coated with a water-based pressure-sensitive adhesive. After applying the agent layer with a doctor blade, it is transported to an oven and dried to obtain a biodegradable adhesive tape,
where the temperature of the oven is 65°C,
Here, the drying treatment time is 15 seconds.

Here, the oven humidity is 92%.

The biodegradable pressure-sensitive adhesive tape produced by the above method does not deform the base material layer 2 .

While embodiments of the invention have been shown and described, those skilled in the art are susceptible to various alterations, modifications, substitutions and variations without departing from the principles and spirit of the invention. It is understood that the scope of the invention is limited by the appended claims and their equivalents.

Release layer 1,
base material layer 2,
Adhesive layer 3

Claims (1)

A biodegradable adhesive tape comprising a release layer, a substrate layer, and an adhesive layer, which are sequentially laminated,
A biodegradable adhesive tape, wherein the substrate layer is a cellulose film layer, and the adhesive layer is a water-based pressure-sensitive adhesive layer.

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