WO2021047092A1

WO2021047092A1 - Paired adhesion adhesive for bag tag

Info

Publication number: WO2021047092A1
Application number: PCT/CN2019/125360
Authority: WO
Inventors: 王传玉; 唐立群; 王凤祥
Original assignee: 上海仪电特镭宝信息科技有限公司
Priority date: 2019-09-12
Filing date: 2019-12-13
Publication date: 2021-03-18
Also published as: CN110760271A

Abstract

Disclosed is a paired adhesion adhesive for a bag tag, which sequentially comprises an intermediate layer and a surface layer; the intermediate layer forms an effective adhesive force, and the surface layer is not sticky. The stickiness of the present paired adhesion adhesive can be reduced to the greatest extent when a tag requires printing and is printed, and strength is extremely high when strength is required for self-adhesion or paired adhesion. In addition, the present paired adhesion adhesive can withstand relatively low temperatures and will not become brittle and lose stickiness, and can also overcome the risk of glue overflow at high temperatures.

Description

Adhesive for luggage tag

Technical field

The present invention relates to adhesive technology, in particular to adhesive technology for luggage tags.

Background technique

Generally, when passengers check their luggage, airlines will affix luggage tags to their checked suitcases, which show basic information such as flight number, luggage weight, destination, and luggage code. Its main function is to avoid the loss of luggage and help passengers find the corresponding luggage in time.

However, the existing luggage tags generally have the following shortcomings:

1) The production cost is high, and the scrap rate is high: At present, most self-adhesive labels have a layered structure. The coating and lamination steps are completed in a single pass or no more than one lamination step is used to construct a multilayer luggage label. Since the label material has pressure-sensitive adhesive in the middle, it will cause the problem of glue overflow. If printing is required, it will also cause increased costs and operational troubles.

2) Difficult to handle, affecting aesthetics: Most of the luggage tags used in airports now have the problem of being very difficult to tear off, and often after tearing off, there will be obvious traces of glue on the luggage, affecting the aesthetics.

3) Tie up tags need training: General check-in personnel need to go through special training before they start to work in order to successfully complete the tethering of baggage tags. However, the cumbersome drop-and-hook steps will have a certain impact on the check-in efficiency. At present, many self-service baggage check-in services at many airports have hindered the promotion of this service because passengers cannot successfully complete the attachment of baggage tags.

4) There are potential safety hazards during baggage sorting: traditional baggage tags are usually peeled off the release paper, and the pressure-sensitive adhesive is exposed outside. Passengers have not been trained. When the sticking position is not controlled properly, it is easy to cause the glue to be exposed. During the operation of the baggage sorting line, due to the fast speed of the baggage sorting line (up to 3M/S), the exposed glue can easily stick to the side racks or other positions of the baggage conveyor belt, causing the tag to be damaged and detached from the baggage. There is a risk Hidden dangers.

Summary of the invention

In view of the difficulties in processing and inconvenience of existing self-adhesive luggage tags in actual use, and the problem that the intermediate pressure-sensitive adhesive will cause glue overflow, a new self-adhesive luggage label solution is needed in the art.

To this end, the purpose of the present invention is to provide a pair of adhesives for luggage labels, the pair of adhesives can only form high-strength adhesive when self-adhesive or pair-adhesive, and there is basically no adhesive at ordinary times, and can be printed or printed. .

In order to achieve the above objective, the tacky adhesive for luggage tags provided by the present invention includes an intermediate layer and a surface layer in sequence; the intermediate layer forms an effective adhesive force, the surface layer is not sticky, and the surface layer and the intermediate layer are different from each other. There is compatibility between the two, when it forms an extruded form after self-adhesive or pair-adhesive, the surface layer will fuse with the intermediate layer to form a part of the entire adhesive, forming a new adhesive layer with extremely high viscosity.

Further, the viscose adhesive further includes a primer layer, and the primer layer is arranged at the bottom of the intermediate layer to form adhesion.

Further, the undercoating layer is formed by anilox roll coating, and the glue thickness is 1-4 U.

Further, the intermediate layer is formed by coating an anilox roll, and the glue thickness is 8-14U.

Further, the surface layer is formed by anilox roll coating, and the thickness of the glue during coating is 3-8U.

Further, the intermediate layer is a pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer includes the following components in parts by weight:

Further, the surface layer includes the following components by weight:

Compared with the existing adhesives on self-adhesive luggage tags, the adhesive for luggage tags provided by the present invention has the following advantages:

1. When the label needs to be printed and printed, the viscosity of the adhesive is low to the extreme, and the strength is extremely high when the strength is required for self-adhesive or pair-adhesive.

2. The components of the adhesive mainly use polymers with large molecular weight and low glass transition temperature, so that the adhesive can withstand lower temperatures without being smashed and lose viscosity, and it can overcome overflow at higher temperatures. The risk of glue.

3. This pair of viscose adhesives have no stickiness with any objects after use. Only self-adhesive or pair-adhesive can produce stickiness, and the viscosity is extremely strong, which can significantly save the application of release paper and glue, reduce carbon emissions, and protect the environment.

4. When the pair of adhesives are used in conjunction with luggage tags, apply the pair of adhesives on the back of the tag's adhesive part. When self-checking luggage, passengers only need to apply pressure to the two ends of the luggage tag. Tethered. Due to the characteristics of the original pair of viscose adhesives, it is only sticky when it is pasted with the same pair of viscose adhesives, and has no adhesion to any other items, so even if the two ends of the luggage tag are not aligned by the passenger, the exposed pair of viscose It will not stick to the luggage conveyor belt to avoid safety hazards.

Description of the drawings

The present invention will be further described below with reference to the drawings and specific embodiments.

Figure 1 is a schematic diagram of the hierarchical structure of the adhesive for luggage tags in an example of the present invention.

detailed description

In order to make it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the present invention will be further explained below in conjunction with specific drawings.

As we all know, the existing self-adhesive luggage tags are mainly multi-layered, and the multi-layer luggage tags are formed through the corresponding coating and lamination steps. Since such multi-layer luggage tags have pressure-sensitive adhesive in the middle, the pressure Sensitive glue has the problem of glue overflow. This later label printing, printing and use have brought great problems (as described in the background technology section).

To this end, the inventor of the present case through a lot of research provided a luggage label adhesive adhesive, which has extremely low viscosity at room temperature, so that it is convenient for the airport or logistics industry to print and print the text and patterns required in the printing Or during the printing process, the printer or printing machine will not be unable to operate due to adhesion; the pair of adhesives can automatically bond together after self-adhesive or pair-adhesive, reaching a high Strength, maintain proper viscosity between minus 40 degrees and room temperature 60 degrees without springing.

Refer to Figure 1, which shows an example of the structure of the adhesive for luggage tags given in this example.

It can be seen from the figure that the tacky adhesive 10 in this example is mainly composed of a primer layer 11, an intermediate layer 12 and a surface layer 13 which are sequentially bonded and combined.

The primer layer 11 here is mainly used to form adhesion to the material, the middle layer 12 is used to provide effective adhesion, and the surface layer 13 provides non-stickiness, so that the label body after it has printability. Specifically, in this example, some of the components in the surface layer and the intermediate layer are similar components, so that the two have good compatibility, and when they are self-adhesive or extruded after being bonded, the surface The layer will be fused with the middle layer to become part of the overall adhesive, and the resulting new adhesive layer has extremely high viscosity; furthermore, the adhesive formulation in this example uses a large molecular weight and a relatively high glass transition temperature. Low polymer is the main component, so that it keeps the molecular chain from pulsing between minus 40 degrees and room temperature 60 degrees, so it has a certain viscosity.

As an example, the primer layer 11 in this example is formed by coating with a corresponding anilox roller, and the anilox roller is preferably 200-500 mesh during coating, the glue thickness is about 1-4U, and the coating temperature is 80° , The baking time is 1min, and the material is preferably Hengying primer.

Specifically, use 200-500 mesh anilox rolls, apply Hengying primer on the surface material, and bake it in an oven at 80 degrees for one minute.

The intermediate layer 12 is a pressure-sensitive adhesive layer, which is formed by coating the corresponding pressure-sensitive adhesive through an anilox roll, and has a thickness of about 8-14 U.

The intermediate layer 12 thus formed has a pressure-sensitive effect in the process of adhesion or self-adhesion, so as to achieve the effect of adhesion.

Specifically, the intermediate layer 12 pressure-sensitive adhesive is mainly composed of the following components by weight:

In the pressure-sensitive adhesive thus constituted, the components of natural rubber latex and styrene-butadiene rubber latex are both polymers, and the two cooperate with each other to achieve the effect of bonding strength; both petroleum tackifying resin and rosin tackifying resin are tackifying Resin, the two interact synergistically to improve the viscosity of the adhesive; the leveling agent, defoamer and wetting agent are additives, and the three interact synergistically to improve the processing performance, so that the adhesive can be more Good uniform coating on the surface material.

The intermediate layer 12 formed based on the pressure-sensitive adhesive of the above-mentioned components can produce pressure-sensitive effect in the process of adhesion or self-adhesion, so as to achieve the purpose of adhesion.

When coating and forming the intermediate layer based on such a pressure-sensitive adhesive, the anilox roll is preferably 130 mesh, the glue thickness is preferably 12 U, the coating temperature is 100°, and the baking time is 1 min.

That is, a 130-mesh anilox roll is used to coat the pressure-sensitive adhesive on the base coat or surface material with a thickness of 12U, and then it is baked in a 100-degree oven for one minute to form an intermediate layer.

The surface layer 13 in this example can also be used as a printing layer, which is also formed by coating the corresponding surface layer glue through an anilox roll, and the thickness of the glue during coating is about 3-8U. The formed surface layer 13 can achieve the effect of being non-sticky on the surface, thereby facilitating subsequent processing and printing.

Specifically, the surface layer glue constituting the surface layer 13 is mainly composed of the following components by weight:

The surface layer glue thus formed, the components of natural rubber latex and styrene-butadiene rubber latex are both polymers, and the two cooperate with each other to improve the bonding strength and anti-sticking effect; both the component leveling agent and the defoaming agent are auxiliary The two previously used synergistic interactions to improve the processing performance of the product, so that the adhesive can be better and evenly coated on the surface material.

According to this, the surface layer formed by the surface layer glue can be non-sticky on the surface after forming through the mutual cooperation of the components, thereby facilitating subsequent processing and printing.

When the surface layer 13 is formed by coating, the anilox roll is 200 meshes during coating, and the glue thickness is preferably about 6U. The coating temperature is 80°, and the baking time is 1 min.

That is, a 200-mesh anilox roll is used to coat the surface layer glue on the middle layer, and the glue thickness is 6U, and the surface layer can be formed after baking in an 80 degree oven for one minute.

The tacky adhesive formed accordingly is based on the similar components of the surface layer and the middle layer, so that it has good compatibility, and when it is self-adhesive or extruded after the tack, it makes The surface layer has become a part of the overall adhesive, and the new adhesive layer formed has extremely high viscosity; in addition, the adhesive formulation mainly uses polymers with large molecular weight and low glass transition temperature, making It keeps the molecular chain from pulsing between minus 40 degrees and room temperature 60 degrees, so it has a certain viscosity.

As an alternative, the adhesive in this example can be directly formed by combining the intermediate layer and the surface layer without using a primer layer.

The present invention will be further explained below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. The experimental methods without specific conditions in the following examples are usually determined in accordance with national standards. If there is no corresponding national standard, it shall be carried out in accordance with general international standards, conventional conditions, or conditions recommended by the manufacturer. Unless otherwise specified, all parts are parts by weight, all percentages are percentages by weight, and polymer molecular weights are number average molecular weights.

Unless otherwise defined or stated, all professional and scientific terms used in this article have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to the content described can be applied to the method of the present invention.

Example 1

The adhesive for luggage tag given in this example is mainly composed of the corresponding middle layer and surface layer.

Among them, the middle layer is composed of the following parts by weight:

25 parts of natural rubber latex;

20 parts of styrene butadiene latex;

20 parts of petroleum tackifying resin;

Rosin tackifying resin 15 parts;

Leveling agent 0.1 part;

0.1 part of defoamer;

Wetting agent 0.1 part.

The intermediate layer of this composition is coated on the primer layer or the surface material, and the glue thickness is 12U, and then baked in a 100-degree oven for one minute, thereby forming the intermediate layer.

The surface layer in this example is composed of the following parts by weight:

40 parts of natural rubber latex;

60 parts of styrene butadiene latex;

Leveling agent 0.1 part;

Antifoaming agent 0.1 part.

The surface layer of this composition is coated on the middle layer, and the glue thickness is 6U, and the surface layer can be formed after baking in an oven at 80 degrees for one minute.

Example 2

Among them, the middle layer is composed of the following parts by weight:

30 parts of natural rubber latex;

25 parts of styrene butadiene latex;

15 parts of petroleum tackifying resin;

Rosin tackifying resin 18 parts;

Leveling agent 0.1 part;

0.1 part of defoamer,

Wetting agent 0.1 part.

The surface layer in this example is composed of the following parts by weight:

45 parts of natural rubber latex;

55 parts of styrene butadiene latex;

Leveling agent 0.1 part;

Antifoaming agent 0.1 part.

Example 3

Among them, the middle layer is composed of the following parts by weight:

25 parts of natural rubber latex;

30 parts of styrene butadiene latex;

10 parts of petroleum tackifying resin;

Rosin tackifying resin 15 parts;

Leveling agent 0.1 part;

0.1 part of defoamer;

Wetting agent 0.1 part.

The surface layer in this example is composed of the following parts by weight:

50 parts of natural rubber latex;

50 parts of styrene butadiene latex;

Leveling agent 0.1 part;

Antifoaming agent 0.1 part.

The baggage tags formed by the above examples are used to test the performance of adhesives. The specific results are shown in Table 1:

Table 1

To	常温面层印刷性Normal temperature surface layer printability	中间层粘性Intermediate viscosity	-40°，24h是否弹开-40°, whether it bounces off in 24h	60°，24h是否弹开60°, whether it bounces off in 24h
实例1Example 1	可印刷，无粘性Printable, non-sticky	13N13N	不弹开Don't bounce off	不弹开Don't bounce off
实例2Example 2	可印刷，无粘性Printable, non-sticky	15N15N	不弹开Don't bounce off	不弹开Don't bounce off
实例3Example 3	可印刷，无粘性Printable, non-sticky	12N12N	不弹开Don't bounce off	不弹开Don't bounce off

From the above example, it can be seen that the adhesive has extremely low viscosity at room temperature, and after self-adhesive or pair-adhesive, the adhesive can automatically bond together to achieve extremely high strength, at minus 40 degrees to room temperature Maintains proper adhesion between 60 degrees and does not bounce off performance.

In this way, when the original tacky adhesive is used in conjunction with the luggage tag, it is directly coated on the corresponding adhesive coating area of the luggage tag to facilitate the tack, such as coating the tacky adhesive on the back of the tag tack.

In this way, when printing and printing are usually required, the viscosity of the adhesive adhesive in the adhesive coating area is extremely low; while in use, the adhesive coating area on the luggage label is glued, so that the adhesive coating area is Adhesive adhesives form extremely high viscosity to bond together automatically.

In this way, when passengers check their baggage by themselves, they only need to press the two ends of the baggage tag to complete the tethering. Due to the characteristics of the adhesive on the tacky luggage label, it is only sticky when it is pasted with the same tacky adhesive, and it has no tackiness with any other items. Therefore, even if the passenger does not align the two ends of the luggage tag, the exposed adhesive will not stick to the luggage conveyor belt, avoiding potential safety hazards.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have Various changes and improvements fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

The tacky adhesive for luggage tags is characterized in that it includes an intermediate layer and a surface layer in sequence; the intermediate layer forms an effective adhesive force, the surface layer is not sticky, and the surface layer and the intermediate layer have compatibility When it is self-adhesive or extruded after being bonded, the surface layer will fuse with the middle layer to form a part of the entire adhesive, forming a new adhesive layer with extremely high viscosity.
The pair of adhesives for luggage tags according to claim 1, wherein the adhesive further comprises a primer layer, and the primer layer is arranged at the bottom of the intermediate layer to form adhesion.
The counter-adhesive for luggage tags according to claim 2, wherein the primer layer is formed by coating an anilox roller, and the thickness of the glue is 1-4U.
The tacky adhesive for luggage tags according to claim 1, wherein the intermediate layer is formed by coating an anilox roller, and the thickness of the glue is 8-14U.
The tacky adhesive for luggage tags according to claim 1, wherein the surface layer is formed by coating an anilox roller, and the thickness of the coating is 3-8U during coating.
The tacky adhesive for luggage tags according to claim 1, wherein the intermediate layer is a pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer comprises the following components by weight:
The tacky adhesive for luggage tags according to claim 1, wherein the surface layer comprises the following components by weight: