阅读说明：本技术 具有保鲜功能的油墨 (Printing ink with fresh-keeping function ) 是由 张新勇 王宁 于 2021-06-23 设计创作，主要内容包括：本发明公开的属于保鲜技术领域,具体为具有保鲜功能的油墨,包括印刷油墨和保鲜剂,所述保鲜剂的材质为1-甲基环丙烯,所述印刷油墨和保鲜剂的质量之比为68～72:28～32,将印刷油墨和保鲜剂混合可以获得具有保鲜功能的保鲜油墨,将保鲜油墨印刷在果蔬和鲜花的溯源商标和卡片上,即可使得印刷制品获得保鲜功能,1-甲基环丙烯是气体,传统的直接充气方式只能在密闭空间内对果蔬和鲜花进行保鲜,而本发明将印刷油墨与1-甲基环丙烯混合,印刷有保鲜油墨的溯源商标和卡片可以缓慢的释放1-甲基环丙烯气体进而对果蔬和鲜花进行保鲜。(The invention discloses an ink with fresh-keeping function, which belongs to the technical field of fresh-keeping, and comprises printing ink and fresh-keeping agent, the preservative is made of 1-methylcyclopropene, the mass ratio of the printing ink to the preservative is 68-72: 28-32, the preservative ink with the preservation function can be obtained by mixing the printing ink with the preservative, the preservative ink is printed on traceable trademarks and cards of fruits and vegetables and flowers, the printed product can obtain the fresh-keeping function, the 1-methylcyclopropene is gas, the traditional direct inflation mode can only keep the fruits, vegetables and flowers fresh in a closed space, the printing ink is mixed with the 1-methylcyclopropene, and the traceable trademark and the card printed with the preservation ink can slowly release the 1-methylcyclopropene gas so as to preserve fruits, vegetables and flowers.)

1. The printing ink with the preservation function comprises printing ink and a preservative, and is characterized in that: the preservative is made of 1-methylcyclopropene, the mass ratio of the printing ink to the preservative is 68-72: 28-32, the printing ink is added into a constant-temperature stirring device and is slowly stirred at the speed of 300 +/-20 r/min, the temperature is kept at 40 +/-3 ℃, then the 1-methylcyclopropene is introduced into the constant-temperature stirring device, and after the 1-methylcyclopropene is melted into the printing ink, the preservative ink can be obtained.

2. The ink with freshness retaining function according to claim 1, wherein: the printing ink is one of UV ink, solvent ink or water-based ink.

3. The ink with freshness retaining function according to claim 2, wherein: the UV printing ink comprises epoxy acrylate resin, cyclic carbonate monoacrylate, an epoxy silicone monomer, benzoin dimethyl ether, 2, 6-di-tert-butyl cresol, isobornyl acrylate, polydimethylsiloxane, polyethylene glycol, polyethylene wax and organic pigment, wherein the epoxy acrylate resin and the 2, 6-di-tert-butyl cresol are firstly added into constant-temperature stirring equipment, the constant-temperature stirring equipment is placed in a dark environment and heated to 70-80 ℃, then the polydimethylsiloxane is slowly dripped into the constant-temperature stirring equipment, the stirring operation of the constant-temperature stirring equipment is started, then the cyclic carbonate mono-acrylate and the epoxy silicone monomer are added into the constant-temperature stirring equipment, the temperature of the constant-temperature stirring equipment is increased to 80-90 ℃ after 10min, then the polyethylene glycol, the benzoin dimethyl ether and the polyethylene wax are added into the constant-temperature stirring equipment, after 5min, adding isobornyl acrylate and organic pigment into the constant-temperature stirring equipment, and slowly cooling the constant-temperature stirring equipment for 20min until the temperature of the constant-temperature stirring equipment is reduced to 50 ℃, so that the UV ink can be obtained.

4. The ink with freshness retaining function according to claim 3, wherein: the UV printing ink comprises, by mass, 30-40 parts of epoxy acrylate resin, 25-30 parts of cyclic carbonate monoacrylate, 20-25 parts of epoxy silicone monomer, 5-8 parts of benzoin, 4-7 parts of 2, 6-di-tert-butyl cresol, 0-11 parts of isobornyl acrylate, 1-4 parts of polydimethylsiloxane, 1-2 parts of polyethylene glycol, 5-6 parts of polyethylene wax and 8-10 parts of organic pigment.

5. The ink with freshness retaining function according to claim 3, wherein: the UV printing ink comprises, by mass, 40-45 parts of epoxy acrylate resin, 20-25 parts of cyclic carbonate monoacrylate, 25-30 parts of epoxy silicone monomer, 8-10 parts of benzoin, 6-8 parts of 2, 6-di-tert-butyl cresol, 0-11 parts of isobornyl acrylate, 1-4 parts of polydimethylsiloxane, 2 parts of polyethylene glycol, 6-8 parts of polyethylene wax and 9-12 parts of organic pigment.

6. The ink with freshness retaining function according to claim 3, wherein: when the temperature in the constant-temperature stirring equipment is 70-80 ℃, the stirring speed of the constant-temperature stirring equipment is 600-800 r/min, and when the temperature in the constant-temperature stirring equipment is 80-90 ℃, the stirring speed of the constant-temperature stirring equipment is 1500-2000 r/min.

7. The ink with freshness retaining function according to claim 3, wherein: the polydimethylsiloxane is dripped into the constant-temperature stirring equipment all the time in the stirring process of the constant-temperature stirring equipment, and after the 1-methylcyclopropene is melted into the printing ink and the dripping of the polydimethylsiloxane is finished, the fresh-keeping ink in the constant-temperature stirring equipment can be discharged.

8. The ink with freshness retaining function according to claim 1, wherein: the viscosity of the printing ink is 12-18 mPa & s, and the energy required by the complete curing of the fresh-keeping ink is 240-420 mj/cm²。

Technical Field

The invention relates to the technical field of preservation, in particular to ink with a preservation function.

Background

Fresh-keeping means keeping the freshness of perishable goods such as vegetables, fruits, flowers and the like, including the freshness of storage, transportation, sale and the like of the perishable goods, and the preservation in a common sense means the storage and the freshness of the fruits, the vegetables and the flowers. The fresh-keeping of fruits, vegetables and flowers includes internal cause and external cause, the inherent nature of fruits, vegetables and flowers is the inherent nature of the freshness level, the inherent nature of the variety is the internal cause, various measures are taken to inhibit aging, and the measure for keeping freshness is the external cause. The existing preservation technology is mainly reflected in external factors.

Present fruit vegetables and flower when the packing, not only need paste the trade mark of tracing to the source on fruit vegetables and fresh flower, still need place the card in the wrapping bag, because printing ink in the trade of current does not have fresh-keeping function, and fresh-keeping reagent also can not pack the printing as printing ink, this card that makes the trade mark of tracing to the source that fruit vegetables and flower pasted and wrapping bag all do not possess fresh-keeping function, consequently still need place the antistaling agent in the wrapping bag, this not only can increase the packaging process, still can increase packaging cost.

Disclosure of Invention

The invention aims to provide ink with a preservation function, and solves the problems that the existing ink in the prior art does not have the preservation function and a preservation reagent cannot be used as the ink for packaging and printing.

In order to achieve the purpose, the invention provides the following technical scheme: the printing ink with the preservation function comprises printing ink and a preservative, wherein the preservative is made of 1-methylcyclopropene, the mass ratio of the printing ink to the preservative is 68-72: 28-32, the printing ink is added into a constant-temperature stirring device and is slowly stirred at the speed of 300 +/-20 r/min, the temperature is kept at 40 +/-3 ℃, then the 1-methylcyclopropene is introduced into the constant-temperature stirring device, and when the 1-methylcyclopropene is melted into the printing ink, the preservation ink can be obtained.

Preferably, the printing ink is one of UV ink, solvent ink or water-based ink.

Preferably, the UV ink comprises epoxy acrylate resin, cyclic carbonate monoacrylate, epoxy silicone monomer, benzoin dimethyl ether, 2, 6-di-tert-butyl cresol, isobornyl acrylate, polydimethylsiloxane, polyethylene glycol, polyethylene wax and organic pigment, the epoxy acrylate resin and the 2, 6-di-tert-butyl cresol are firstly added into constant-temperature stirring equipment, the constant-temperature stirring equipment is placed in a dark environment and heated to 70-80 ℃, then the polydimethylsiloxane is slowly dripped into the constant-temperature stirring equipment, the stirring operation of the constant-temperature stirring equipment is started, the cyclic carbonate monoacrylate and the epoxy silicone monomer are then added into the constant-temperature stirring equipment, the temperature of the constant-temperature stirring equipment is increased to 80-90 ℃ after 10min, then the polyethylene glycol, the benzoin dimethyl ether and the polyethylene wax are added into the constant-temperature stirring equipment, after 5min, adding isobornyl acrylate and organic pigment into the constant-temperature stirring equipment, and slowly cooling the constant-temperature stirring equipment for 20min until the temperature of the constant-temperature stirring equipment is reduced to 50 ℃, so that the UV ink can be obtained.

Preferably, the UV ink comprises, by mass, 30-40 parts of epoxy acrylate resin, 25-30 parts of cyclic carbonate monoacrylate, 20-25 parts of epoxy silicone monomer, 5-8 parts of benzoin, 4-7 parts of 2, 6-di-tert-butyl cresol, 0-11 parts of isobornyl acrylate, 1-4 parts of polydimethylsiloxane, 1-2 parts of polyethylene glycol, 5-6 parts of polyethylene wax and 8-10 parts of organic pigment.

Preferably, the UV ink comprises, by mass, 40-45 parts of epoxy acrylate resin, 20-25 parts of cyclic carbonate monoacrylate, 25-30 parts of epoxy silicone monomer, 8-10 parts of benzoin, 6-8 parts of 2, 6-di-tert-butyl cresol, 0-11 parts of isobornyl acrylate, 1-4 parts of polydimethylsiloxane, 2 parts of polyethylene glycol, 6-8 parts of polyethylene wax and 9-12 parts of organic pigment.

Preferably, when the temperature in the constant-temperature stirring equipment is 70-80 ℃, the stirring speed of the constant-temperature stirring equipment is 600-800 r/min, and when the temperature in the constant-temperature stirring equipment is 80-90 ℃, the stirring speed of the constant-temperature stirring equipment is 1500-2000 r/min.

Preferably, the polydimethylsiloxane is dripped into the constant-temperature stirring equipment all the time in the stirring process of the constant-temperature stirring equipment, and after the 1-methylcyclopropene is melted into the printing ink and the dripping of the polydimethylsiloxane is finished, the preservation ink in the constant-temperature stirring equipment can be discharged.

Preferably, the viscosity of the printing ink is 12-18 mPa & s, and the energy required by the complete curing of the fresh-keeping ink is 240-420 mj/cm²。

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

1) the printing ink and the preservative are mixed to obtain the preservation ink with the preservation function, and the preservation ink is printed on the traceable trademark and the card of the fruit and vegetable, so that the printed product can obtain the preservation function;

2) 1-methylcyclopropene is gas, fruits, vegetables and flowers can only be preserved in a closed space by a traditional direct inflation mode, printing ink is mixed with 1-methylcyclopropene, and traceable trademarks and cards printed with the preservation ink can slowly release 1-methylcyclopropene gas so as to preserve the fruits, the vegetables and the flowers;

3) the preservation ink formed by mixing the printing ink and the preservative can be directly used on anilox rollers of offset presses and embossing presses and then directly printed on printing materials, so that the execution of a preservation process can be reduced, and the preservation cost is reduced.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that:

the printing ink with the preservation function comprises printing ink and a preservative, wherein the preservative is made of 1-methylcyclopropene, the printing ink is added into a constant-temperature stirring device, the printing ink is slowly stirred at the speed of 300 +/-20 r/min, the temperature of the printing ink is kept at 40 +/-3 ℃, then 1-methylcyclopropene starts to be introduced into the constant-temperature stirring device, and the preservation ink can be obtained after the 1-methylcyclopropene is blended into the printing ink, wherein the 1-methylcyclopropene is an effective fruit, can obviously reduce the ethylene release amount and the respiratory intensity of the fruit, well delays the senescence of the fruit, maintains the hardness, the brittleness, the color, the flavor, the fragrance and the nutrient components of the fruit, in addition, the 1-methylcyclopropene can also effectively enhance the disease resistance of the fruit, and relieve the rot and physiological diseases caused by microorganisms, and the 1-methylcyclopropene exists in a gas state at normal temperature, the printing ink is taken as a fixed carrier of the 1-methylcyclopropene, the 1-methylcyclopropene is introduced into the printing ink, and then the 1-methylcyclopropene gas is released when the printing ink is used;

ethylene is a gas with very small molecules, plays an important role in storage, transportation and fresh-keeping of horticultural products, promotes yellowing, after-ripening, aging and falling of fruits, flowers and leaves, has a great effect on plants or harvested agricultural products due to low-concentration ethylene, is called as ripening hormone, plays an important role in quality change of storage and transportation of harvested fruits and vegetables, can accelerate aging and after-ripening of the harvested fruits and vegetables, particularly plays a role in accelerating yellowing and softening of green fruits and vegetables, and yellowing is an important characteristic of aging of the harvested fruits and vegetables, and is proved: this is because ethylene decomposes chlorophyll therein, the development process of which is closely related to ethylene, and the influence of ethylene on the quality of agricultural products is multifaceted and varies depending on the types of crops, and the harmful effects are as follows:

promoting early after-ripening and softening of fruits: for older fruits such as bananas, apples and mangoes to be stored and transported for a long time, ethylene can cause too early after-ripening, the fruits cannot be stored once after-ripening and must be sold as soon as possible, and peaches, plums and some vegetables such as tomatoes, balsam pears and the like have the same problems;

fruit chlorosis: if the inner lemon is kept fresh green, the belts of some oriental pome have a little green color, the freshness is reduced by the green fading, and the fruits are faded by the low amount of ethylene;

the fruit mildew rate is increased: such as strawberries, ethylene increases mildew and rot;

yellowing and dropping of vegetables: the broccoli can be seriously yellowed under the condition of ethylene with low concentration, most leaf vegetables are yellowed under the condition of ethylene, some leaves can fall off, and some fruit vegetables such as cucurbita pepo can be yellowed under the condition of ethylene;

promoting the stem vegetable to be fibrous: such as asparagus and bamboo shoots, the ethylene is generated in the cut, the ethylene leads the base of the cut to be fiberized in advance, and the fiberization extends to the asparagus tip, so that the edible parts are reduced;

certain vegetables are subject to particular deterioration phenomena: for example, stored carrots produce bitter taste due to ethylene, lettuce produces brown spots due to ethylene;

aging and falling off the cut flowers: such as carnation, lily, violet, most of orchid and the like, the buds are aged quickly when encountering ethylene, and the buds fall off after being yellowed due to the ethylene;

the flower leaves are made to be soft and fall off: for example, Christmas red and various potted flowers are affected by ethylene to cause the leaves to droop and fall off;

the harm of ethylene is not obvious under the condition of good ventilation, the influence of the ethylene is great after the accumulation of a closed space, most agricultural products can generate ethylene, only the amount of the ethylene is different, the ethylene is generated by mechanical damage, cutting parts, mold and environmental influence, and the ethylene is necessary to prolong the storage life of horticultural products and keep the horticultural products fresh and to inhibit the synthesis of endogenous ethylene in organs or prevent the ethylene from playing a role as much as possible;

ethylene acts by binding with specific receptor protein in plant body, it is believed that ethylene receptor is Zn-containing protein, 1-methylcyclopropene can bind with metal ion of ethylene receptor, inhibit formation of ethylene receptor complex, block signal conduction induced by ethylene, therefore, 1-methylcyclopropene can be used to bind with ethylene receptor in advance before ethylene in plant is formed in large amount, block the binding of ethylene and subsequent effect, temporarily delay the physiological reaction of ethylene, 1-methylcyclopropene can eliminate the effect of ethylene, thereby delaying the maturation and aging process of many fruits, vegetables, cut flowers and the like, 1-methylcyclopropene action has persistence, in plant body, 1-methylcyclopropene molecule binds with ethylene receptor irreversibly, although the binding of 1-methylcyclopropene with receptor is irreversible, but a new receptor can be formed when the fruits enter the transition period, and the normal after-ripening of the fruits and vegetables is not influenced in the later storage period;

1-methylcyclopropene is a novel ethylene action inhibitor discovered in recent years, and can inhibit the action of endogenous and exogenous ethylene of plants, and the action mechanism of 1-methylcyclopropene as an antistaling agent is as follows: when plant organs enter the maturation stage, ethylene as maturation hormone is produced and combined with related receptors in cells to activate a series of physiological and biochemical reactions related to maturation, so that the aging and death of the organs are accelerated, 1-methylcyclopropene with a similar molecular structure to ethylene can be combined with the receptors, the formation of an ethylene receptor complex is prevented, and signal conduction induced by ethylene is blocked, so that 1-methylcyclopropene is used for preemptively combining with the related receptors before the endogenous ethylene in the plant is released, the combination of ethylene and the related receptors and subsequent negative effects are blocked, the maturation process is delayed, and the fresh-keeping effect is achieved;

the 1-methylcyclopropene preservative mainly has the following effects on agricultural products:

vegetable: the 1-methylcyclopropene treatment mainly has the following fresh-keeping effects: the ageing phenomena of yellowing and wilting of leaf vegetables and the like are prevented, the respiratory strength is reduced, the reduction of the nutritional ingredients of the vegetables is obviously slowed down, the taste of the vegetables is maintained or improved, the requirement of the vegetables on low temperature in the transportation process is reduced, the shelf life of the vegetables is prolonged, if the broccoli can be seriously yellowed under low-concentration ethylene, the broccoli can be rapidly yellowed at the temperature higher than 4.5 ℃ in storage and transportation, and the storage time of the broccoli can be obviously prolonged after the broccoli is treated by 1-methylcyclopropene;

fruit: the main problems in the process of storing and transporting fruits are softening, color change, spots and browning, for example, the fruits such as kiwi fruits, sweet persimmons and peaches are rapidly softened after being picked, for example, the softening time of the sweet persimmons can be prolonged from the fifth day to the fifteenth day to the twentieth day after being treated by 1-methylcyclopropene, for example, the common tiger skin disease problem of the refrigerated apples can be basically inhibited after the 1-methylcyclopropene is used, the comprehensive quality is remarkably improved compared with that of a control group, and the reduction of the hardness of the fruits is remarkably delayed after the 1-methylcyclopropene is treated;

and (3) flowers: most flowers are sensitive to ethylene, and in general, 1-methylcyclopropene inhibits wilting and opening of cut flowers before they mature, reduces browning and yellowing of leaves, and prevents their aging.

The viscosity of the printing ink is 12-18 mPa.s, and the energy required by the complete curing of the fresh-keeping ink is 240-420 mj/cm²。

Example 1:

the printing ink is solvent ink, and the mass ratio of the solvent ink to the 1-methylcyclopropene is 68-70: 30-32.

Example 2:

the printing ink is water-based ink, and the mass ratio of the water-based ink to the 1-methylcyclopropene is 70-72: 28-30.

Example 3:

the printing ink is UV ink, and the mass ratio of the UV ink to the 1-methylcyclopropene is 70: 30.

The UV printing ink comprises, by mass, 30-40 parts of epoxy acrylate resin, 25-30 parts of cyclic carbonate monoacrylate, 20-25 parts of epoxy silicone monomer, 5-8 parts of benzoin, 4-7 parts of 2, 6-di-tert-butyl cresol, 0-11 parts of isobornyl acrylate, 1-4 parts of polydimethylsiloxane, 1-2 parts of polyethylene glycol, 5-6 parts of polyethylene wax and 8-10 parts of organic pigment.

Example 4:

the printing ink is UV ink, and the mass ratio of the UV ink to the 1-methylcyclopropene is 70: 30.

The UV printing ink comprises, by mass, 40-45 parts of epoxy acrylate resin, 20-25 parts of cyclic carbonate monoacrylate, 25-30 parts of epoxy silicone monomer, 8-10 parts of benzoin, 6-8 parts of 2, 6-di-tert-butyl cresol, 0-11 parts of isobornyl acrylate, 1-4 parts of polydimethylsiloxane, 2 parts of polyethylene glycol, 6-8 parts of polyethylene wax and 9-12 parts of organic pigment.

The preparation method of the UV ink comprises the following steps: firstly, adding epoxy acrylate resin and 2, 6-di-tert-butyl cresol into constant-temperature stirring equipment, placing the constant-temperature stirring equipment in a dark environment, heating to 70-80 ℃, then slowly dropwise adding polydimethylsiloxane into the constant-temperature stirring equipment, wherein the polydimethylsiloxane is used as an antifoaming agent, so that excessive foam can be avoided in the constant-temperature stirring equipment, simultaneously starting stirring operation by the constant-temperature stirring equipment, then adding cyclic carbonate monoacrylate and epoxy silicone monomer into the constant-temperature stirring equipment, heating to 80-90 ℃ after 10min, then adding polyethylene glycol, benzoin ether and polyethylene wax into the constant-temperature stirring equipment, adding isobornyl acrylate and organic pigment into the constant-temperature stirring equipment after 5min, wherein the isobornyl acrylate has high activity, high hardness and low shrinkage, so that the viscosity of the ink can be effectively reduced, and slowly cooling the constant-temperature stirring equipment for 20min until the temperature of the constant-temperature stirring equipment is reduced to 50 ℃, thus obtaining the UV ink.

When the temperature in the constant-temperature stirring equipment is 70-80 ℃, the stirring speed of the constant-temperature stirring equipment is 600-800 r/min, and when the temperature in the constant-temperature stirring equipment is 80-90 ℃, the stirring speed of the constant-temperature stirring equipment is 1500-2000 r/min.

And adding polydimethylsiloxane dropwise into the constant-temperature stirring equipment all the time in the stirring process of the constant-temperature stirring equipment, discharging the fresh-keeping ink in the constant-temperature stirring equipment after 1-methylcyclopropene is mixed into the printing ink and the polydimethylsiloxane is added dropwise, wherein the adding speed of the polydimethylsiloxane is in direct proportion to the foam generation speed in the constant-temperature stirring equipment.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference thereto is therefore intended to be embraced therein.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.