阅读说明：本技术 一种可擦拭型油墨印刷纸及其制备方法和应用 (Erasable ink printing paper and preparation method and application thereof ) 是由 金强维 马锐 叶哲 陈喜 刘磊 于 2020-07-24 设计创作，主要内容包括：本发明提供一种可擦拭型油墨印刷纸及其制备方法和应用。所述可擦拭型油墨印刷纸包括依次层叠的面单纸层、PVP隔离层、油墨层和覆膜层。所述可擦拭型油墨印刷纸通过少量水轻拭油墨即可消除,同时所述可擦拭型油墨印刷纸具有优良的耐磨、耐刮、耐撕裂和防水性能。(The invention provides a wiping type printing ink printing paper and a preparation method and application thereof. The erasable printing ink printing paper comprises a single paper layer, a PVP isolating layer, an ink layer and a film coating layer which are sequentially stacked. The erasable ink printing paper can be eliminated by slightly wiping ink with a small amount of water, and has excellent wear resistance, scratch resistance, tear resistance and waterproof performance.)

1. The erasable ink printing paper is characterized by comprising a single paper layer, a PVP isolating layer, an ink layer and a film coating layer which are sequentially stacked.

2. A wipeable ink printing sheet according to claim 1 in which the PVP barrier layer has a thickness of 50-100 μm.

3. A wipeable ink printing sheet according to claim 1 or 2, wherein the PVP barrier layer is prepared from raw materials comprising, in weight percent: 4-6% of polyvinylpyrrolidone, 8-15% of epoxy acrylate, 8-15% of silyl epoxy modified acrylate, 30-35% of aliphatic urethane acrylate, 15-20% of tripropylene glycol diacrylate, 8-12% of trimethylolpropane triacrylate, 3-8% of photoinitiator and the balance of water;

preferably, the polyvinylpyrrolidone has a K value of 27 to 32.4;

preferably, the photoinitiator comprises 2-hydroxy-2-methyl-1-phenylpropanone and/or 2-hydroxy-2-methyl-1-p-hydroxyethyl etherpropanone.

4. A wipeable ink printing sheet according to any of claims 1 to 3, wherein the PVP barrier layer is prepared from a stock which further comprises any one or a combination of at least two of a levelling agent, a wetting agent or a defoaming agent;

preferably, the leveling agent accounts for 1-2% of the total mass of the preparation raw materials of the isolating layer;

preferably, the leveling agent is an acrylate leveling agent;

preferably, the wetting agent accounts for 1-3% of the total mass of the preparation raw materials of the isolating layer;

preferably, the wetting agent is an acrylic wetting agent;

preferably, the defoaming agent accounts for 0.5-1.5% of the total mass of the preparation raw materials of the isolating layer;

preferably, the antifoaming agent is a silicone antifoaming agent and/or a mineral oil type antifoaming agent.

5. A erasable ink printing paper according to any one of claims 1-4, characterized in that the ink layer is 0.2-1 μm.

6. A erasable ink printing paper according to any one of claims 1 to 5, characterized in that the material of the coating layer is PE.

7. A erasable ink printing paper according to any one of claims 1 to 6, characterized in that the thickness of the overlaminate layer is 1 to 10 μm.

8. A method of manufacturing a erasable ink-printed paper according to any one of claims 1 to 7, characterized in that the method of manufacturing the erasable ink-printed paper is: and coating a PVP isolation layer on one side of the surface single paper layer, then solidifying, printing an ink layer on the PVP isolation layer, and finally bonding a film coating layer on the ink layer to obtain the erasable ink printing paper.

9. The method as claimed in claim 8, wherein the curing is performed by UV irradiation with energy of 400-1200mJ/cm²。

10. Use of a wipeable ink-printed sheet according to any one of claims 1 to 7 in the manufacture of courier cut sheets.

Technical Field

The invention belongs to the technical field of ink printing, and particularly relates to erasable ink printing paper and a preparation method thereof.

Background

At present, electronic commerce develops rapidly, express business in logistics industry is pushed to an air port growing at a high speed, the rapid development of the express industry brings great convenience to daily life of people, but the problem that personal information is leaked by express bills exists, the personal information includes addresses, names, telephones and the like, and product details are printed on part of the express bills. The privacy of consumers is greatly revealed by the conveniently-discarded express bill. The existing method for processing personal information on an express bill is mainly to tear the bill or use a shielding pen to paint black. These are all shielding means that the consumer took in order to protect own privacy, and express delivery industry has not appeared effective technological means yet.

CN203651242U discloses an express bill which can prevent water and friction and ensure that information filled by a user is stored more perfectly; the express delivery system comprises at least two sets of overlapped documents for storing express delivery information, wherein a first glue coating is arranged on the back surface of the document of the lowest layer; a first coating film is arranged on the lower surface of the first glue coating; the first coating is a transparent coating, a jelly is arranged on the lower surface of the first coating, and a second coating is arranged on the jelly; the first tectorial membrane torn back accessible lower surface after the receipt of the topside of pasting in the express delivery list of jelly. Although this express delivery is single can waterproof and antifriction, the information of printing on the express delivery face can only rely on means such as scissors to draw the flower, tear up, ink blackens, alcohol wiping to eliminate, and it is difficult to get rid of totally and the process is troublesome.

Therefore, the development of a facial sheet paper which can be easily wiped to eliminate the information on the facial sheet and has excellent wear resistance, scratch resistance, tear resistance and water resistance is the focus of current research in the field.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a erasable ink printing paper, a preparation method and application thereof. The erasable ink printing paper can be eliminated by slightly wiping ink with a small amount of water; meanwhile, the erasable ink printing paper has excellent wear resistance, scratch resistance, tear resistance and waterproof performance.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, the present invention provides a erasable ink printing paper, including a surface single paper layer, a PVP separator, an ink layer, and a coating layer, which are sequentially stacked.

In the invention, the PVP isolating layer is arranged between the surface single paper layer and the printing ink layer to play a role of a barrier and prevent printing ink molecules from penetrating into the surface single paper layer, so that printed information can be easily erased by virtue of a small amount of water, and the printing ink is convenient and simple. The printing ink has no special requirement on the single paper layer of the printing surface, and after the PVP isolating layer is added on the surface of the single paper layer of the common surface, the printed ink can be erased and printed by adopting the common ink, no special ink or process is needed, and the application range is wide. Meanwhile, the ink layer is also provided with the film coating layer, so that the erasable ink printing paper has excellent wear resistance, scratch resistance, tearing resistance and waterproof performance, and the situation that the surface single characters are inked after the express delivery surface single is contacted with water due to other accidents can be prevented.

Preferably, the PVP barrier layer has a thickness of 50-100 μm, which may be, for example, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc.

Preferably, the preparation raw materials of the PVP isolating layer comprise the following components in percentage by weight: 4-6% of polyvinylpyrrolidone, 8-15% of epoxy acrylate, 8-15% of silyl epoxy modified acrylate, 30-35% of aliphatic urethane acrylate, 15-20% of tripropylene glycol diacrylate, 8-12% of trimethylolpropane triacrylate, 3-8% of photoinitiator and the balance of water.

In the invention, the PVP isolating layer is prepared by taking polyvinylpyrrolidone, epoxy acrylate, silyl epoxy modified acrylate and aliphatic polyurethane acrylate as main agents, has good film forming property, is hard to coat, good in toughness, high in brightness, good in water-repellent and moisture-proof effects, strong in adhesive force and not easy to fall off, and can prevent ink molecules from penetrating into the surface single paper when being coated on the surface single paper and then printed with ink, so that printed information can be easily erased with the help of a small amount of water. Meanwhile, tripropylene glycol diacrylate and trimethylolpropane triacrylate are used as active monomers, so that the viscosity of a mixture system can be effectively reduced, the reaction speed is increased, and the reaction is participated.

The polyvinylpyrrolidone content may be 4 to 6%, for example, 4%, 4.5%, 5%, 5.5%, 6%, or the like, based on 100% by mass of the raw material for preparing the PVP separator.

The content of the epoxy acrylate is 8 to 15%, for example, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, etc., based on 100% by mass of the raw material for producing the PVP separator.

The content of the silyl epoxy modified acrylate may be 8 to 15%, for example, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, or the like, based on 100% by mass of the raw material for preparing the PVP separator.

The content of the aliphatic urethane acrylate ester is 30 to 35%, for example, 30%, 31%, 32%, 33%, 34%, 35%, etc., based on 100% by mass of the raw material for producing the PVP barrier layer.

The tripropylene glycol diacrylate is contained in an amount of 15 to 20%, for example, 15%, 16%, 17%, 18%, 19%, 20% or the like, based on 100% by mass of the raw material for preparing the PVP barrier layer.

The trimethylolpropane triacrylate content may be, for example, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, or the like, based on 100% by mass of the raw material for preparing the PVP separator.

The photoinitiator content may be 3 to 8%, for example, 3%, 4%, 5%, 6%, 7%, 8%, or the like, based on 100% by mass of the raw material for preparing the PVP separator.

Preferably, the polyvinylpyrrolidone has a K value of 27 to 32.4, which may be, for example, 27, 28, 29, 30, 31, 32, 32.4, etc.

Preferably, the photoinitiator comprises 2-hydroxy-2-methyl-1-phenylpropanone and/or 2-hydroxy-2-methyl-1-p-hydroxyethyl etherpropanone.

Preferably, the preparation raw material of the PVP isolating layer also comprises any one or a combination of at least two of a leveling agent, a wetting agent or an antifoaming agent.

Preferably, the leveling agent accounts for 1-2% of the total mass of the preparation raw materials of the isolating layer, and can be 1%, 1.2%, 1.4%, 1.6%, 1.8%, 2% and the like.

Preferably, the leveling agent is an acrylate-based leveling agent.

Preferably, the wetting agent accounts for 1-3% of the total mass of the preparation raw materials of the isolation layer, and may be, for example, 1%, 1.2%, 1.4%, 1.6%, 1.8%, 2%, 2.2%, 2.4%, 2.6%, 2.8%, 3%, etc.

Preferably, the wetting agent is an acrylic wetting agent.

Preferably, the defoaming agent accounts for 0.5-1.5% of the total mass of the preparation raw materials of the isolation layer, and may be, for example, 0.5%, 0.7%, 0.9%, 1.1%, 1.3%, 1.5%, and the like.

Preferably, the antifoaming agent is a silicone antifoaming agent and/or a mineral oil type antifoaming agent.

Preferably, the ink layer is 0.2-1 μm, and may be, for example, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9 μm, 1 μm, or the like.

Preferably, the coating layer is made of PE.

The thickness of the coating layer is preferably 1 to 10 μm, and may be, for example, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm.

In a second aspect, the present invention provides a method for producing the erasable ink printing paper according to the first aspect, the method comprising: and coating a PVP isolation layer on one side of the surface single paper layer, then solidifying, printing an ink layer on the PVP isolation layer, and finally bonding a film coating layer on the ink layer to obtain the erasable ink printing paper.

Preferably, the energy of the ultraviolet light is 400-1200mJ/cm²For example, it may be 400mJ/cm²、600mJ/cm²、800mJ/cm²、1000mJ/cm²、1200mJ/cm²And the like.

In a third aspect, the present invention provides the use of a wipeable ink printing sheet according to the first aspect in the manufacture of a courier cut sheet.

According to the express waybill paper prepared from the erasable printing ink printing paper, a consumer does not need to remove information by means of scratching, tearing or blacking ink with scissors, and the like, and the information on the waybill can be removed by only removing the coating layer and then wiping the printing ink layer with a small amount of water, so that the problem of information leakage on the express waybill is solved. And the film coating layer on the express bill has excellent wear resistance, scratch resistance, tear resistance and waterproof performance.

Compared with the prior art, the invention has the following beneficial effects:

according to the erasable ink printing paper, the ink is wiped lightly by a small amount of water, so that the information on the bill can be eliminated, and the problem of information leakage is solved; meanwhile, the erasable ink printing paper has excellent wear resistance, scratch resistance, tear resistance and waterproof performance.

Drawings

FIG. 1 is a schematic view of a erasable ink printing sheet according to the present invention;

wherein, 1 is a surface single paper layer, 2 is a PVP isolating layer, 3 is an ink layer, and 4 is a film coating layer.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.

Fig. 1 is a schematic structural diagram of the erasable ink printing paper of the present invention, and as shown in fig. 1, the erasable ink printing paper includes a single paper layer 1, a PVP barrier layer 2, an ink layer 3, and a coating layer 4, which are sequentially stacked.

The following component sources are shown below: polyvinylpyrrolidone K30 (manufacturer: Wavor chemical Co., Ltd., Anhui province, trade name: 9003-39-8), epoxy acrylate (manufacturer: Guangdong Haohui New Material Co., Ltd., trade name: CR90426), silyl epoxy modified acrylate (manufacturer: Guangdong Haohui New Material Co., Ltd., trade name: HE3203), aliphatic urethane acrylate (manufacturer: Guangdong Haohui New Material Co., trade name: 0039A), tripropylene glycol diacrylate (manufacturer: Changxing chemical, trade name: EM223), trimethylolpropane triacrylate (manufacturer: Zhonghao Jing high molecular Material Co., Ltd., trade name: T003), acrylate leveling agent (manufacturer: Shanghai loyal chemical Co., Ltd., trade name: RM-2020), acrylic wetting agent (manufacturer: Asian Hai Nayas special chemical, trade name: Levasol 469), Mineral oil type antifoaming agent (manufacturer: Asian Haimax Special chemical, brand: defom w-0506); the ink was purchased from (manufacturer: Pacific ink) and the PE film was purchased from (manufacturer: Shenzhen City Sanshang polymer environmental protection New Material Co., Ltd.).