阅读说明：本技术 一种热转印智能打码混合基碳带及其制备方法 (Thermal transfer printing intelligent coding mixed base carbon ribbon and preparation method thereof ) 是由 张国强 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种热转印智能打码混合基碳带及其制备方法,包括依次设置的油墨层、离型层、基带和背涂层,所述离型层包括颗粒型涂层和熔融涂层,所述颗粒型涂层设置于油墨层和熔融涂层之间,所述颗粒型涂层包括下述重量份数的组分：4～8份巴西棕榈蜡粉,10～16份小烛树蜡粉,0.5～2份EVA,20～30份二甲苯。具备下述有益效果：该热转印智能打码混合基碳带的离型层为双层结构,再者油墨层采用的配方使得本发明的热转印智能打码混合基碳带不仅膜面平整,隔离剥离效果佳,而且边界清晰度高,打印质量有效提升,稳定性好。(The invention discloses a thermal transfer printing intelligent code printing mixed base carbon belt and a preparation method thereof, wherein the thermal transfer printing intelligent code printing mixed base carbon belt comprises an ink layer, a release layer, a base belt and a back coating which are sequentially arranged, the release layer comprises a granular coating and a molten coating, the granular coating is arranged between the ink layer and the molten coating, and the granular coating comprises the following components in parts by weight: 4-8 parts of carnauba wax powder, 10-16 parts of candelilla wax powder, 0.5-2 parts of EVA and 20-30 parts of xylene. The method has the following beneficial effects: the release layer of the heat transfer printing intelligent coding mixed base carbon belt is of a double-layer structure, and the formula adopted by the ink layer enables the heat transfer printing intelligent coding mixed base carbon belt to be smooth in film surface, good in isolation stripping effect, high in boundary definition, effective in improvement of printing quality and good in stability.)

1. The utility model provides a sign indicating number mixed base carbon ribbon is beaten to heat-transfer seal intelligence, its characterized in that, including the printing ink layer that sets gradually, from type layer, baseband and back coating, include granule type coating and fused coat from the type layer, granule type coating sets up between printing ink layer and fused coat, granule type coating includes the component of following parts by weight: 4-8 parts of carnauba wax powder, 10-16 parts of candelilla wax powder, 0.5-2 parts of EVA and 20-30 parts of xylene.

2. The thermal transfer intelligent coding mixed base carbon ribbon as claimed in claim 1, wherein the melt coating comprises the following components in parts by weight: 35-46 parts of carnauba wax, 14-24 parts of candelilla wax, 26-32 parts of paraffin, 3-8 parts of EVA and 4-6 parts of acrylate.

3. The thermal transfer printing intelligent coding mixed base carbon ribbon as claimed in claim 1, wherein the ink layer comprises the following components in parts by weight: 24-26 parts of carbon black, 28-34 parts of saturated polyester, 18-23 parts of plasticizer, 1-3 parts of dispersing agent, 4-6 parts of tackifying resin, 3-8 parts of disproportionated rosin and 10-14 parts of carnauba wax powder.

4. The thermal transfer printing intelligent coding mixed base carbon ribbon as claimed in claim 3, wherein the ink layer comprises the following components in parts by weight: 25 parts of carbon black, 30 parts of saturated polyester, 21 parts of plasticizer, 2 parts of dispersant, 5 parts of tackifying resin, 5 parts of disproportionated rosin and 12 parts of carnauba wax powder.

5. The thermal transfer printing intelligent coding mixed base carbon ribbon as claimed in claim 2, wherein the molten primer comprises the following components in parts by weight: 40 parts of carnauba wax, 20 parts of candelilla wax, 30 parts of paraffin wax, 5 parts of EVA and 5 parts of acrylate.

6. The thermal transfer intelligent printing coded hybrid-based carbon tape according to claim 2, wherein the paraffin wax is No. 64 paraffin wax.

7. The thermal transfer printing intelligent coding mixed base carbon belt according to claim 1, wherein the thickness of the base belt PET base belt is 4.0-5.0 um.

8. The thermal transfer intelligent coding hybrid carbon ribbon of claim 1, wherein the back coating is an acrylate modified silicone back coating.

9. The preparation method of the thermal transfer printing intelligent coding mixed base carbon ribbon is characterized by comprising the following steps:

1) baseband: selecting a PET base band with the thickness of 4.0-5.0 um;

2) back coating: uniformly coating one side of the PET base band by a coating machine, wherein the coating weight is 0.05-0.2g/m ²；

3) A release layer: the release layer is a double layer, which is a granular coating and a molten coating from top to bottom in sequence,

wherein the melt coating is melt coated on the other surface of the PET base band, and the coating weight is 0.4-1.2 g/m ²；

Wherein the granular coating comprises 4-8 parts of carnauba wax powder, 10-16 parts of candelilla wax powder, 50-60 parts of MEK, 0.05-2 parts of EVA and 20-30 parts of xylene;

a, uniformly grinding and dispersing 4-8 parts of carnauba wax powder, 10-16 parts of candelilla wax powder and 50-60 parts of MEK;

b, 0.5-2 parts of EVA and 20-30 parts of dimethylbenzene are uniformly mixed, and the mixture is coated on the coating surface of the molten coating at room temperature, wherein the coating amount is 1.0-0.2 g/m ²Drying at 60 ℃;

4) ink layer: the ink layer comprises 24-26 parts of carbon black, 28-34 parts of saturated polyester, 18-23 parts of plasticizer, 1-3 parts of dispersant, 4-6 parts of tackifying resin, 3-8 parts of disproportionated rosin and 10-14 parts of carnauba wax powder; the components are dissolved, ground and uniformly dispersed, and the components are uniformly coated on a release layer at room temperature, wherein the coating amount is 1.0-2.0 g/m ²And drying at 70 ℃ to obtain the TTO mixed base carbon ribbon.

10. The method for preparing the thermal transfer printing intelligent coding mixed base carbon belt according to claim 9, wherein the total coating weight of the release layer is 0.4-1.4 g/m ²。

Technical Field

The invention relates to the technical field of thermal transfer ribbon, in particular to a thermal transfer intelligent coding mixed base ribbon and a preparation method thereof.

Background

The intelligent code printing carbon ribbon is applied to online generated information printing in the flexible package industry, comprises date, bar code, two-dimensional code, batch number and the like, and has the advantages of online production, variable information, quickness, rapidness and the like compared with the traditional code printing. In order to ensure the safety of food and medicine, the printing of real-time information such as production date, product batch number and the like on soft packages of food and medicine has become an important part in the production process of food and medicine. Real-time information enables manufacturers to track products as needed and provides protection in large-scale product recalls, and coding has become an important component of modern quality systems.

TTO carbon ribbon is used as on-line production printing carbon ribbon, the advantages of quick and rapid production and continuous production are achieved, meanwhile, higher requirements are placed on the product, resin with stronger polarity and lower melting point is generally selected as ink layer connecting material, at present, the TTO carbon ribbon is prepared by adopting EVA, acrylate, polyester, polyamide and other compounding modes to meet the requirements of medium applicability, transfer printing quality and the like, the formula is complex, the operation difficulty is higher, the process requirement is high, and the selection of the resin connecting material is limited to a certain extent.

Disclosure of Invention

The release layer of the thermal transfer intelligent coding mixed base carbon belt is of a double-layer structure, and the formula adopted by the ink layer enables the thermal transfer intelligent coding mixed base carbon belt to be smooth in film surface, good in isolation and stripping effect, high in boundary definition, effective in improvement of printing quality and good in stability.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a sign indicating number mixed base carbon ribbon is beaten to heat-transfer seal intelligence, includes the printing ink layer that sets gradually, from type layer, baseband and back coating, include granule type coating and fused coat from the type layer, granule type coating sets up between printing ink layer and fused coat, granule type coating includes the component of following parts by weight: 4-8 parts of carnauba wax powder, 10-16 parts of candelilla wax powder, 0.5-2 parts of EVA and 20-30 parts of xylene.

As a further improvement, the melt coating comprises the following components in parts by weight: 35-46 parts of carnauba wax, 14-24 parts of candelilla wax, 26-32 parts of paraffin, 3-8 parts of EVA and 4-6 parts of acrylate.

As a further improvement, the ink layer comprises the following components in parts by weight: 24-26 parts of carbon black, 28-34 parts of saturated polyester, 18-23 parts of plasticizer, 1-3 parts of dispersing agent, 4-6 parts of tackifying resin, 3-8 parts of disproportionated rosin and 10-14 parts of carnauba wax powder.

As a further improvement, the ink layer comprises the following components in parts by weight: 25 parts of carbon black, 30 parts of saturated polyester, 21 parts of plasticizer, 2 parts of dispersant, 5 parts of tackifying resin, 5 parts of disproportionated rosin and 12 parts of carnauba wax powder.

As a further improvement, the melt bottom coating comprises the following components in parts by weight: 40 parts of carnauba wax, 20 parts of candelilla wax, 30 parts of paraffin wax, 5 parts of EVA and 5 parts of acrylate.

As a further improvement, the paraffin wax is No. 64 paraffin wax.

As a further improvement, the thickness of baseband PET baseband is 4.0 ~ 5.0 um.

As a further improvement, the back coating is an acrylate modified silicone back coating.

A preparation method of a thermal transfer printing intelligent coding mixed base carbon ribbon comprises the following steps:

1) baseband: selecting a PET base band with the thickness of 4.0-5.0 um;

2) back coating:uniformly coating one side of the PET base band by a coating machine, wherein the coating weight is 0.05-0.2g/m ²；

3) A release layer: the release layer is a double layer, which is a granular coating and a molten coating from top to bottom in sequence,

wherein the melt coating is melt coated on the other surface of the PET base band, and the coating weight is 0.4-1.2 g/m ²；

Wherein the granular coating comprises 4-8 parts of carnauba wax powder, 10-16 parts of candelilla wax powder, 50-60 parts of MEK, 0.5-2 parts of EVA and 20-30 parts of xylene;

a, uniformly grinding and dispersing 4-8 parts of carnauba wax powder, 10-16 parts of candelilla wax powder and 50-60 parts of MEK;

b, 0.5-2 parts of EVA and 20-30 parts of dimethylbenzene are uniformly mixed, and the mixture is coated on the coating surface of the molten coating at room temperature, wherein the coating amount is 1.0-0.2 g/m ²Drying at 60 ℃;

4) ink layer: the ink layer comprises 24-26 parts of carbon black, 28-34 parts of saturated polyester, 18-23 parts of plasticizer, 1-3 parts of dispersant, 4-6 parts of tackifying resin, 3-8 parts of disproportionated rosin and 10-14 parts of carnauba wax powder; the components are dissolved, ground and uniformly dispersed, and the components are uniformly coated on a release layer at room temperature, wherein the coating amount is 1.0-2.0 g/m ²And drying at 70 ℃ to obtain the TTO mixed base carbon ribbon.

As a further improvement, the total coating weight of the release layer is 0.4-1.4 g/m ²。

The thermal transfer printing intelligent coding mixed base carbon ribbon has the following beneficial effects: 1. double-layer type priming coat: the fused bottom is combined with the granular bottom, so that respective advantages can be absorbed, the fused bottom has an isolation effect, the ink layer is prevented from contacting with PET, and the release of the ink layer is facilitated; 2) the contact area of the particle type base coat and the ink layer is large, the adhesive force is strong, and the contact area of the particle type base coat and the fused base coat is smaller, so that the particle type base coat is easy to strip; 3) the larger particles are exposed on the surface of the ink layer, and are beneficial to the dryness of the surface of the ink layer. Therefore, the double-layer type bottom coating can well improve the printing performance and the reliability guarantee of the carbon tape in the aspects of stripping efficiency, thermal stability, film surface dryness, fracture definition and the like; 4) the ink layer uses the plasticizer, play a role in plasticizing the resin binder, increase the free volume of the resin binder, reduce the melting point, reduce the lowest printing temperature, reduce the fracture strength of the resin binder, improve the printing sensitivity of the carbon ribbon, print the speed; 5) the adhesion of the ink layer is improved by the tackifying resin, the applicability of the medium is improved, and the wear resistance and scratch resistance of the carbon tape after printing are enhanced; 6) the mixed-base carbon ribbon main body resin is saturated polyester resin, has strong liquidity and higher printing release speed, is suitable for TTO printers, has quick and quick printing characteristics, has strong liquidity and is beneficial to printing on rough media.

Drawings

FIG. 1 is a schematic diagram of a thermal transfer intelligent coded mixed-based carbon tape structure;

description of reference numerals: 1-thermal transfer printing intelligent coding mixed base carbon tape, 11-ink layer, 12-release layer, 121-particle type coating, 122-fusion coating 13-base tape and 14-back coating.

Detailed Description

In order to make the purpose, technical scheme and advantages of the invention clearer, the invention is further described with reference to embodiments 1 to 3 as follows: