CN111621159A - Ultraviolet absorbent for PET packaging and preparation method of PET plastic packaging - Google Patents
Ultraviolet absorbent for PET packaging and preparation method of PET plastic packaging Download PDFInfo
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- CN111621159A CN111621159A CN202010446549.9A CN202010446549A CN111621159A CN 111621159 A CN111621159 A CN 111621159A CN 202010446549 A CN202010446549 A CN 202010446549A CN 111621159 A CN111621159 A CN 111621159A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/35—Heterocyclic compounds having nitrogen in the ring having also oxygen in the ring
- C08K5/353—Five-membered rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/35—Heterocyclic compounds having nitrogen in the ring having also oxygen in the ring
- C08K5/357—Six-membered rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/10—Applications used for bottles
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Abstract
The invention provides an ultraviolet absorbent for PET packaging and a preparation method of PET plastic packaging, wherein the ultraviolet absorbent comprises a carrier, a dispersant, an ultraviolet absorbing component and a toner which are mixed and prepared; wherein the ultraviolet absorption component comprises one or more of benzotriazole, benzoxazolone, benzoxazinone and modified vanillin polyfunctional group. The PET plastic package prepared by the ultraviolet absorbent can also effectively block long-wave ultraviolet rays, thereby achieving the purposes of protecting products in the package from being damaged by ultraviolet rays, improving the quality of the products and prolonging the quality guarantee period of the products.
Description
Technical Field
The invention relates to the technical field of PET (polyethylene terephthalate) packaging, in particular to an ultraviolet absorbent for PET packaging and a preparation method of PET plastic packaging.
Background
The functional beverage with abundant nutrition and good taste is gradually a new favorite of consumers in the market, and a plurality of beverage manufacturers can develop the functional beverage with rich nutrition and good taste without any residue. However, the ultraviolet rays in sunlight, especially the long-wave ultraviolet rays (320 nm-400 nm), can damage the nutritional ingredients, the color and the taste in many functional beverages, such as vitamin A, vitamin B2, vitamin B6, vitamin B12 and the like in the nutritional ingredients are easily damaged and degraded by the ultraviolet rays; food-grade pigment dyes such as red, blue, yellow and the like in the color of the beverage are easy to be damaged by ultraviolet rays and fade; ultraviolet light can also excite oxidation reactions, which destroy the taste and flavor of food and beverage and affect the taste experience of consumers. In order to keep the original taste, color and nutrition of some functional beverages, the beverages need to be effectively prevented from being damaged by ultraviolet rays within the shelf life, and an innovative ultraviolet absorbent of Hanhui can effectively protect the beverages from being damaged by the ultraviolet rays, does not influence the transparency of the PET bottles, and can ensure that the PET bottles still keep the original transparency and finish.
At present, solid ultraviolet blocking agents are mainly used in the market, but the solid ultraviolet blocking agents have the problems of poor blocking effect, high addition ratio, undesirable dispersion effect in product packaging, large influence on packaging appearance and the like, and the addition cost is much higher than that of the Hanhui innovative liquid ultraviolet absorbent. Some liquid ultraviolet absorbers are also available in the market, but the ultraviolet absorbers generally have the disadvantages of obvious side effect, impurity black spots and the like, and the addition cost is high.
Disclosure of Invention
The invention aims to provide an ultraviolet absorbent for PET packaging, which can effectively block ultraviolet rays with 350-400 nm waveband, and a preparation method of PET plastic packaging, which is low in cost and simple in process.
In order to achieve the purpose, the invention provides an ultraviolet absorbent for PET packaging, which comprises a carrier, a dispersant, an ultraviolet absorbing component and a toner, wherein the carrier, the dispersant, the ultraviolet absorbing component and the toner are mixed;
wherein the ultraviolet absorption component comprises one or more of benzotriazole, benzoxazolone, benzoxazinone and modified vanillin polyfunctional group.
Preferably, in the ultraviolet absorbent, the weight content ratio of each component is as follows: 1 to 30 percent of carrier, 0.5 to 10 percent of dispersant, 10 to 90 percent of ultraviolet absorption component and 0.1 to 5 percent of toner.
Preferably, the carrier is food-grade carrier vegetable oil.
Preferably, the dispersant is a food contact grade organic or inorganic silicon oxide.
The invention also provides a preparation method of the PET plastic package with the ultraviolet absorption function, which comprises the following steps:
step 1: weighing and preparing raw materials, wherein the raw materials comprise a carrier, a dispersing agent, an ultraviolet absorption component and a toner;
step 2: grinding the raw materials;
and step 3: firstly, placing a carrier in a stirring kettle, slowly adding the ultraviolet absorption component into a reaction kettle to be stirred together with the carrier, then adding the dispersing agent, and finally adding the toner to be uniformly stirred together;
and 4, step 4: after stirring, taking out the stirred slurry, mixing the slurry with dried PET slices according to a certain proportion, beating a colorimetric plate by using an injection molding machine, and injecting a blank;
and 5: and heating the bottle blank after blank injection and blowing the bottle to prepare the PET plastic package.
Preferably, in step 4, the stirring slurry accounts for 0.1% -0.15% of the PET plastic package.
Preferably, in step 4, the plate is placed on a chromatograph, and the standard sample plate with the same ratio of the ultraviolet absorber added is compared, and toner is added appropriately for toning according to the difference of the detection results.
Preferably, in step 5, after the bottle preform is blown, a bottle sheet with a certain thickness is cut off, a spectrometer is used for measuring the ultraviolet transmittance, and the product quality is detected
Compared with the prior art, the invention has the advantages that:
1. the ultraviolet absorbent for PET packaging can effectively absorb long-wave ultraviolet rays, and the prepared PET plastic packaging can effectively block the long-wave ultraviolet rays, so that the purpose of protecting products in the packaging from ultraviolet rays is achieved, the quality of the products is improved, and the quality guarantee period of the products is prolonged.
2. The PET packaging ultraviolet absorbent is combined with PET slices to form plastic packages, and the plastic packages are integrally transparent packages, and the product packages are attractive in appearance and high in customer satisfaction degree through properly adding the toner.
3. Compared with the traditional ultraviolet absorbent, the raw materials used in the invention are cheap, the cost is greatly saved, and the application range is wide.
4. By adding the dispersant in a proper proportion, the package prepared by the ultraviolet for packaging the PET has good dispersion effect of the ultraviolet absorbing component and good ultraviolet absorbing effect of each part of the package; the special proportion of the components can also ensure the full reaction between the dispersant and the ultraviolet absorption components, avoid causing surplus of the dispersant or the ultraviolet absorption components, and further control the cost of products.
Drawings
FIG. 1 is a line graph showing the concentration change of vitamin A placed in a PET plastic package according to an embodiment of the present invention;
FIG. 2 is a line graph showing the change in concentration of vitamin B6 placed in a PET plastic package according to an embodiment of the present invention;
fig. 3 is a line graph of the change in concentration of lemon yellow placed in PET plastic packages according to embodiments of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be further described below.
The invention provides an ultraviolet absorbent for PET packaging, which comprises a carrier, a dispersant, an ultraviolet absorbing component and a toner, wherein the carrier, the dispersant, the ultraviolet absorbing component and the toner are mixed;
wherein the ultraviolet absorption component comprises one or more of benzotriazole, benzoxazolone, benzoxazinone and modified vanillin polyfunctional group.
In this embodiment, in the ultraviolet absorber, the weight content ratio of each component is: 1 to 30 percent of carrier, 0.5 to 10 percent of dispersant, 10 to 90 percent of ultraviolet absorption component and 0.1 to 5 percent of toner.
In this embodiment, the carrier is food grade carrier vegetable oil and fat, and the dispersant is food contact grade organic or inorganic silicon oxide.
The invention also provides a preparation method of the PET plastic package with the ultraviolet absorption function, which comprises the following steps:
step 1: weighing and preparing raw materials, wherein the raw materials comprise a carrier, a dispersing agent, an ultraviolet absorption component and a toner;
step 2: grinding the raw materials;
and step 3: firstly, placing a carrier in a stirring kettle, slowly adding an ultraviolet absorption component into a reaction kettle to be stirred together with the carrier, then adding a dispersing agent, and finally adding a toner to be uniformly stirred together;
and 4, step 4: after stirring, taking out the stirred slurry, mixing the slurry with dried PET slices according to a certain proportion, beating a colorimetric plate by using an injection molding machine, and injecting a blank;
and 5: and heating the bottle blank after blank injection and blowing the bottle to prepare the PET plastic package.
In this example, in step 4, the agitated slurry is 0.1% to 0.15% of the PET plastic packaging.
In this example, in step 4, a colorimetric plate is placed on a chromatograph, a standard sample-retaining plate to which an ultraviolet absorber is added in the same ratio is compared, and a toner is appropriately added for toning according to the difference in detection results.
In this embodiment, in step 5, after the bottle preform is blown, a bottle sheet with a certain thickness is cut, and the spectrometer is used to measure the ultraviolet transmittance, so as to detect the product quality.
The advantageous effects of the invention are further illustrated by the following specific examples and experimental data:
example 1:
20 percent of food-grade carrier vegetable oil, 5 percent of inorganic food contact-grade silicon oxides, 75 percent of benzoxazinone and modified vanillin, 1 percent of food contact-grade toning dye,
in the vitamin water project of domestic customer A, the weight of a PET bottle body is 21 g, the wall thickness is 0.35 mm, the capacity is 500 ml, 0.12% of the formula ultraviolet absorbent is added, and the rest is PET resin, so that the product completely reaches the product nutrition, taste, color and appearance standards required by the customer under the specified detection conditions (40 ℃, and the storage time is 180 days), and the physical indexes of transparency, toughness, strength and the like of the bottle body also meet the internal control standards of the customer. The customer uses a foreign brand ultraviolet absorbent with the same addition proportion, but the unit price is very high, and the product of my department can save nearly million yuan of material cost for the customer every year.
Example 2:
15 percent of food-grade carrier vegetable oil, 4.5 percent of food contact organic or inorganic silicon oxide, 80 percent of benzoxazinone/modified vanillin, 0.5 percent of food contact toning dye,
according to the aerated fruit juice beverage project of Korean client B, the weight of a bottle is 42 g, the wall thickness is 0.35 mm, the capacity is 1.5L, 0.13% of the formula ultraviolet absorbent is added, and the balance is PET resin, so that in the quality guarantee period, all indexes of the product completely meet the quality requirements of clients, and the appearance, the toughness, the physical properties and other performance indexes of the bottle meet the internal control standards of the clients. The product quality of the customers is effectively protected in the shelf life.
The corresponding UV screening test was carried out using the bottle of example 1, as can be seen from FIG. 1: the protection of vitamin A is obvious by absorbing and shielding ultraviolet rays on the premise of keeping the transparent appearance of the PET container, the vitamin A has various physiological functions of promoting growth, maintaining normal secretion of bones, eyesight and mucous epithelium and the like, has the function of preventing precancerous lesions, and is manifested as slow growth and hypo-adaptability to form night blindness in the absence of the vitamin A.
As shown in fig. 2, the protection of vitamin B6 by the uv-ray of the PET package of the present invention is also evident on the premise of maintaining the transparent appearance of the PET container, and vitamin B6 is an essential substance for human fat and sugar metabolism, treating anemia, and inhibiting vomiting.
As shown in fig. 3: the PET package of the invention can effectively protect some food-grade toning dyes, such as FD & C5 yellow.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The ultraviolet absorbent for PET packaging is characterized by comprising a carrier, a dispersing agent, an ultraviolet absorbing component and a toner which are mixed and prepared;
wherein the ultraviolet absorption component comprises one or more of benzotriazole, benzoxazolone, benzoxazinone and modified vanillin polyfunctional group.
2. The ultraviolet absorber for PET packaging as claimed in claim 1, wherein the ultraviolet absorber comprises the following components in percentage by weight: 1 to 30 percent of carrier, 0.5 to 10 percent of dispersant, 10 to 90 percent of ultraviolet absorption component and 0.1 to 5 percent of toner.
3. The ultraviolet absorber for PET packaging as claimed in claim 1, wherein the carrier is a food grade carrier vegetable oil.
4. The UV absorber for PET packaging according to claim 1, wherein the dispersant is a food contact grade organic or inorganic silicon-based oxide.
5. A preparation method of PET plastic package with ultraviolet absorption function is characterized by comprising the following steps:
step 1: weighing and preparing raw materials, wherein the raw materials comprise a carrier, a dispersing agent, an ultraviolet absorption component and a toner;
step 2: grinding the raw materials;
and step 3: firstly, placing a carrier in a stirring kettle, slowly adding the ultraviolet absorption component into a reaction kettle to be stirred together with the carrier, then adding the dispersing agent, and finally adding the toner to be uniformly stirred together;
and 4, step 4: after stirring, taking out the stirred slurry, mixing the slurry with dried PET slices according to a certain proportion, beating a colorimetric plate by using an injection molding machine, and injecting a blank;
and 5: and heating the bottle blank after blank injection and blowing the bottle to prepare the PET plastic package.
6. The method for preparing the PET plastic package with the ultraviolet absorption function according to claim 5, wherein in the step 4, the stirring slurry accounts for 0.1-0.15% of the PET plastic package.
7. The method for preparing a PET plastic package with ultraviolet absorption according to claim 5, wherein in step 4, the colorimetric plate is placed on a chromatograph, a standard sample-remaining plate added with the same proportion of ultraviolet absorber is compared, and toner is added appropriately for color matching according to the difference of detection results.
8. The method for preparing the PET plastic package with the ultraviolet absorption function as recited in claim 5, wherein in the step 5, after the bottle preform is blown, a bottle sheet with a certain thickness is cut, and the ultraviolet transmittance is measured by a spectrometer to detect the product quality.
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| CN202010446549.9A CN111621159A (en) | 2020-05-25 | 2020-05-25 | Ultraviolet absorbent for PET packaging and preparation method of PET plastic packaging |
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| CN202010446549.9A CN111621159A (en) | 2020-05-25 | 2020-05-25 | Ultraviolet absorbent for PET packaging and preparation method of PET plastic packaging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115197474A (en) * | 2022-07-15 | 2022-10-18 | 上海翰晖新材料有限公司 | Anti-yellowing anti-reflection heat-absorbing auxiliary, PET bottle and preparation method thereof |
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Address after: 201404 1st floor, building 2, 58 Lane 959, jinzha Road, Fengxian District, Shanghai Applicant after: Shanghai Hanhui New Material Co.,Ltd. Address before: 201707 room 352, area X, 3 / F, building 1, 9138 Beiqing Road, Qingpu District, Shanghai Applicant before: Shanghai Hanhui New Material Co.,Ltd. |
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Application publication date: 20200904 |