CN210984036U

CN210984036U - Double-bonding-layer flame-retardant label

Info

Publication number: CN210984036U
Application number: CN202020092621.8U
Authority: CN
Inventors: 邓昭昭; 樊勤海; 樊秋实
Original assignee: Shenzhen Yidaxing Technology Co ltd
Current assignee: Shenzhen Yidaxing Technology Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-07-10
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses a fire-retardant label of two tie coats, including the fire-retardant printing coating that sets gradually, the substrate, first tie coat, fire-retardant tie coat and second tie coat, the fire-retardant printing coating has added phosphorus system, nitrogen system, oxide, phosphorus nitrogen system flame retardant one or more in for printing ink, the substrate includes one or more in PET membrane, PP synthetic paper, the PI membrane, first tie coat includes one or more in acrylic resin, polyurethane, the organosilicon resin, fire-retardant tie coat is including the acrylic resin who has added multiple compound flame retardant, one or more in polyurethane, the organosilicon resin, the second tie coat includes acrylic resin, polyurethane, one or more in the organosilicon resin, the utility model discloses flame retardant efficiency reaches U L94 VTM-0 level and the cohesiveness improves more than 50%, has widened fire-retardant label's application range.

Description

Double-bonding-layer flame-retardant label

Technical Field

The utility model relates to a printing coating field especially relates to a fire-retardant label of two tie coat.

Background

The labels used in electronic equipment, especially lithium batteries, need to be subjected to flame retardant treatment, and have different requirements on flame retardancy and cohesiveness due to different use environments, so that the conventional method is mainly to add flame retardants into an adhesive layer in a compounding manner or compound different flame retardant adhesive layers. Thus, the adhesive property is reduced after the flame retardant property is improved, and the application range of the flame retardant label is limited; there is therefore a need for a label that achieves both flame retardancy and adhesion.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists in the above-mentioned technique, the utility model provides a fire-retardant label of two tie coat can satisfy fire-retardant grade requirement to can improve adhesive property, widen fire-retardant label's application range.

In order to achieve the above object, the utility model provides a fire-retardant label of two tie layers, including fire-retardant printing coating, substrate, first tie coat, fire-retardant tie coat and the second tie coat that sets gradually.

Wherein the thickness of the flame-retardant printing coating is 0.1-10 mu m.

Wherein the flame retardant printing coating thickness is 6 μm.

Wherein, the flame-retardant printing coating is formed by adding one or more of phosphorus flame retardants, nitrogen flame retardants, oxides and phosphorus-nitrogen flame retardants into the printing ink.

Wherein the thickness of the first bonding layer and the second bonding layer is 2-12 μm.

Wherein the thickness of the first bonding layer and the second bonding layer is 8 μm.

Wherein, the first bonding layer or the second bonding layer is one or more of acrylic resin, polyurethane and organic silicon resin.

Wherein the thickness of the flame-retardant bonding layer is 5-25 μm;

wherein the thickness of the flame-retardant bonding layer is 20 μm.

Wherein the flame-retardant bonding layer comprises one or more of acrylic resin, polyurethane and organic silicon resin added with a plurality of compound flame retardants,

compared with the prior art, the utility model provides a fire-retardant label of two tie layers, flame retardant efficiency reaches U L94 VTM-0 level and the cohesiveness improves more than 50%, has widened fire-retardant label's application range.

Drawings

FIG. 1 is a structural diagram of a release-free material layer of the present invention;

fig. 2 is a structural diagram of the release material layer of the present invention.

Detailed Description

In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1, a double-adhesive-layer flame-retardant label is sequentially formed by a printed coating L, a substrate L, a first adhesive layer L, a flame-retardant adhesive layer L and a second adhesive layer L from bottom to top, wherein the flame-retardant printed coating L is formed by adding one or more of phosphorus, nitrogen, oxide and phosphorus-nitrogen flame retardants into ink, the substrate L is formed by one or more of a PET film, a PP film, PP synthetic paper and a PI film, the first adhesive layer L is formed by one or more of acrylic resin, polyurethane and organic silicon resin, the flame-retardant adhesive layer L is formed by one or more of acrylic resin, polyurethane and organic silicon resin added with multiple compound flame retardants, and the second adhesive layer L is formed by one or more of acrylic resin, polyurethane and organic silicon resin, compared with the prior art, the flame-retardant effect of the flame-retardant label reaches level U829 4 VTM-0, the adhesion is improved by more than 50%, and the application range of the flame-retardant label is widened.

Wherein, the utility model discloses in, the substrate is preferred to be the PP membrane, more selects to be the PET membrane, prefers the PI membrane again. The thickness of the substrate is 5 μm to 100. mu.m, preferably 20 μm, more preferably 50 μm, still more preferably 25 μm.

In a further improvement of the present invention, the material of the first and second adhesive layers is preferably a silicone resin, and more preferably an acrylic resin. The first and second adhesive layers have a thickness of 2 to 12 μm, preferably 10 μm, more preferably 6 μm, and still more preferably 8 μm.

As a further improvement of the technical scheme, the flame-retardant bonding layer is preferably acrylic resin added with multiple built flame retardants, and the thickness of the flame-retardant bonding layer is 5-25 μm, preferably 20 μm, more preferably 18 μm, and still more preferably 24 μm.

In a further improvement of the technical solution, the flame-retardant printing coating layer is preferably formed by adding an oxide flame retardant to the ink, more preferably a phosphorus flame retardant, and still more preferably a phosphorus-nitrogen flame retardant. A thickness of 0.1 to 10 μm, preferably a thickness of 4 μm, more preferably 8 μm, still more preferably 6 μm; the flame-retardant printing coating is prepared by one or more of gravure printing, letterpress printing and screen printing.

Therefore, the utility model discloses a fire-retardant grade of fire-retardant label can reach U L94 VTM-0 level, and adhesive strength can reach 8N/25 mm.

Referring to fig. 2, on the basis of the above embodiment, a release material layer may be further disposed on the second adhesive layer, the release material layer L5 is one or more of release paper and release film, and the thickness of the release material layer is 12-100 μm.

The present invention is not limited to any particular source, and may be any source known to those skilled in the art.

The preparation process based on the flame-retardant label is as follows:

the first bonding layer is coated on the substrate, the flame-retardant bonding layer is compounded, the second bonding layer is compounded, and after the release film is compounded, the flame-retardant ink layer is coated on the other side of the substrate.

The following is a concrete description taking an actual preparation process as an example:

1. first preparation Process

1.1, coating acrylate pressure-sensitive adhesive on the surface of a 20-mu mPE film, and finishing curing in an oven at 120 ℃ for 0.5min to obtain a film with the thickness of 6 mu m.

1.2, coating glue containing the compound flame retardant on the surface of a release film with the thickness of 50 microns, and finishing curing in an oven with the temperature of 125 ℃ for 1min to obtain a flame-retardant bonding layer with the thickness of 20 microns.

1.3, pressing the 1.1 and 1.2 samples by using a composite roller.

1.4, coating the acrylate pressure-sensitive adhesive on the surface of a release film with the thickness of 50 microns, and finishing curing in an oven with the temperature of 120 ℃ for 0.5min, wherein the thickness of the adhesive layer is 6 microns.

And 1.5, peeling off the release film in the step 1.3, and pressing the release film with the sample in the step 1.4 by using a composite roller.

1.6, coating the other side of the 1.5 sample with the flame-retardant ink, and finishing curing in an oven at 100 ℃ for 2min, wherein the thickness of the flame-retardant ink layer is 8 microns.

And 1.7, carrying out a flame retardant test on the 1.6 sample, wherein the flame retardant grade can reach U L94 VTM-1 grade.

1.8, the adhesive property of the 1.6 sample is tested, and the adhesive strength can reach 6.5N/25 mm.

2. Second preparation procedure

2.1, coating the acrylate pressure-sensitive adhesive on the surface of a 25 mu mPI film, and finishing curing in an oven at 120 ℃ for 0.5min, wherein the thickness of the adhesive layer is 8 mu m.

2.2, coating glue containing the compound flame retardant on the surface of a release film with the thickness of 50 microns, and finishing curing in an oven with the temperature of 125 ℃ for 1min to obtain the flame-retardant bonding layer with the thickness of 24 microns.

2.3, pressing the 2.1 and 2.2 samples by using a composite roller.

And 2.4, coating the acrylate pressure-sensitive adhesive on the surface of a release film with the thickness of 50 micrometers, and finishing curing in an oven with the temperature of 120 ℃ for 0.5min, wherein the thickness of the adhesive layer is 8 micrometers.

And 2.5, stripping the release film in the step 2.3, and pressing the release film with the sample 2.4 by using a composite roller.

2.6, coating the other side of the 2.5 sample with the flame-retardant ink, and finishing curing in an oven at 100 ℃ for 2min, wherein the thickness of the flame-retardant ink layer is 6 microns.

2.7, the 2.6 sample is subjected to a flame retardant test, and the flame retardant grade can reach the U L94 VTM-0 grade.

2.8, the 2.6 sample is tested for bonding performance, and the bonding strength can reach 8N/25 mm.

3. Third preparation Process

3.1, coating the acrylate pressure-sensitive adhesive on the surface of the 20 mu mPI film, and finishing curing in an oven at 120 ℃ for 0.5min, wherein the thickness of the adhesive layer is 8 mu m.

And 3.2, coating glue containing the compound flame retardant on the surface of a release film with the thickness of 50 micrometers, and finishing curing in an oven with the temperature of 125 ℃ for 1min to obtain the flame-retardant bonding layer with the thickness of 20 micrometers.

3.3, pressing the 3.1 and 3.2 samples by using a composite roller.

And 3.4, coating the acrylate pressure-sensitive adhesive on the surface of a release film with the thickness of 50 micrometers, and finishing curing in an oven with the temperature of 120 ℃ for 0.5min, wherein the thickness of the adhesive layer is 10 micrometers.

And 3.5, peeling off the release film in the step 3.3, and pressing the release film with the sample 3.4 by using a composite roller.

And 3.6, coating the other side of the 3.5 sample with the flame-retardant ink, and finishing curing in an oven at 100 ℃ for 2min, wherein the thickness of the flame-retardant ink layer is 10 microns.

3.7, the flame retardant test is carried out on the 3.6 sample, and the flame retardant grade can reach the U L94 VTM-0 grade.

3.8, the adhesive property of the 3.6 sample is tested, and the adhesive strength can reach 10N/25 mm.

The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. The utility model provides a fire-retardant label of two tie layers which characterized in that, is including fire-retardant printing coating, substrate, first tie coat, fire-retardant tie coat and the second tie coat that sets gradually.

2. The two-bond layer flame retardant label of claim 1, wherein the flame retardant print coating thickness is 0.1-10 μ ι η.

3. The two-bond layer flame retardant label of claim 2, wherein the flame retardant print coating thickness is 6 μ ι η.

4. The two-adhesive layer flame retardant label of claim 2, wherein the flame retardant printed coating is an ink added with one or more of phosphorus, nitrogen, oxide, phosphorus and nitrogen flame retardants.

5. The two-adhesive layer flame retardant label of claim 1 wherein the first adhesive layer and the second adhesive layer are 2-12 μm thick.

6. The two-adhesive layer flame retardant label of claim 5 wherein the first adhesive layer and the second adhesive layer are 8 μm thick.

7. The two-adhesive layer flame retardant label of claim 5 wherein the first adhesive layer or the second adhesive layer is one or more of acrylic, polyurethane, silicone.

8. The two-adhesive layer flame retardant label of claim 1 wherein the flame retardant adhesive layer is 5-25 μm thick.

9. The two-adhesive layer flame retardant label of claim 8 wherein the flame retardant adhesive layer is 20 μm thick.

10. The two-adhesive layer flame retardant label of claim 8, wherein the flame retardant adhesive layer comprises one or more of acrylic resin, polyurethane, and silicone resin with multiple built flame retardants added.