CN115124821B - High-strength transparent polyester composition for PET (polyethylene terephthalate) bottle - Google Patents
High-strength transparent polyester composition for PET (polyethylene terephthalate) bottle Download PDFInfo
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- CN115124821B CN115124821B CN202210874514.4A CN202210874514A CN115124821B CN 115124821 B CN115124821 B CN 115124821B CN 202210874514 A CN202210874514 A CN 202210874514A CN 115124821 B CN115124821 B CN 115124821B
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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
- C08K3/32—Phosphorus-containing compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- 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
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
-
- 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
Abstract
The invention relates to the technical field of packaging materials, in particular to a polyester composition for a high-strength transparent PET bottle. The uniformity of the bottle wall of the PET bottle obtained by using the PET stretch blow molding is poor, so that the mechanical property of the thinnest part of the bottle wall of the PET bottle can not meet the use requirement, and the PET bottle is easy to damage during use. In order to solve the problems, the invention provides the polyester composition for the high-strength transparent PET bottle, which is based on a common PET polyester material, and the special flow regulator and the special reinforcing agent are added to improve the flow characteristic of the polyester composition for the PET bottle in the blowing and stretching processes, so that the obtained PET bottle has more uniform wall thickness and better mechanical property at the thinnest part of the wall, and the breakage rate of the PET bottle is obviously reduced.
Description
Technical Field
The invention relates to the technical field of packaging materials, in particular to a polyester composition for a high-strength transparent PET bottle.
Background
Currently, various resins have been used as materials for containers for seasonings, oils, beverages, cosmetics, detergents and the like, depending on the type of filled contents and the purpose of use thereof. Among them, polyethylene terephthalate (PET) has excellent mechanical strength, heat resistance, transparency and gas barrier property, and is particularly suitable for use as a filling material for beverage containers such as fruit juice, soft drinks, carbonated beverages and the like.
Polyethylene terephthalate is a polymer obtained by esterifying terephthalic acid with ethylene glycol, and then performing liquid-phase polycondensation and solid-phase polycondensation. Polyethylene terephthalate may be injection molded using an injection molding machine to form a preform for a blow-molded body, and then the preform is inserted into a mold having a predetermined shape to perform stretch blow molding, obtaining a hollow molded container (PET bottle).
The uniformity of the bottle wall of the PET bottle obtained by using the PET stretch blow molding is poor, and the mechanical property of the thinnest part of the bottle wall of the PET bottle can not meet the use requirement, so that the PET bottle is easy to damage during use. It is known that improving the uniformity of the thickness of the bottle can enhance the strength of the bottle to some extent with the same amount of PET.
Disclosure of Invention
Problems in the prior art: the uniformity of the bottle wall of the PET bottle obtained by using the PET stretch blow molding is poor, so that the mechanical property of the thinnest part of the bottle wall of the PET bottle can not meet the use requirement, and the PET bottle is easy to damage during use. The invention provides a polyester composition for a high-strength transparent PET bottle, which comprises the following components in percentage by mass:
98.0 to 99.7 percent of PET base material
Flow regulator 0.1-0.5%
0.2-1.5% of reinforcing agent;
the mass ratio of the flow regulator to the reinforcing agent is 1:1-12.
Specifically, the PET substrate is polyethylene terephthalate with an intrinsic viscosity of 0.68-0.80 dL/g.
Specifically, the PET substrate comprises Indorama 3301B-PET, saint SABIC PET BC211, U.S. Bamberger Polymers82. Xiamen Tenglong DSR TL-103, USA DAK->(C91A), zhejiang Wankai WK811, hainan Yishengsheng petrochemical YS-W01.
Specifically, the flow regulator is phosphate with average particle size of 0.5-4 μm.
Specifically, the phosphate comprises at least one of zirconium hydrogen phosphate, strontium phosphate and manganese phosphate.
Specifically, the reinforcing agent is dicyclopentadiene diformate with the average particle size of 0.5-4 mu m.
Specifically, the dicyclopentadiene diformate comprises at least one of dicyclopentadiene diformate sodium, dicyclopentadiene diformate magnesium, dicyclopentadiene diformate calcium, dicyclopentadiene diformate potassium, dicyclopentadiene diformate aluminum, dicyclopentadiene diformate zinc, dicyclopentadiene diformate lithium, dicyclopentadiene diformate manganese, dicyclopentadiene diformate iron, dicyclopentadiene diformate ferrous, dicyclopentadiene diformate copper and dicyclopentadiene diformate cobalt.
Specifically, the processing method for preparing the PET bottle by the polyester composition for the high-strength transparent PET bottle is blow molding.
Specifically, the blow molding method comprises the following steps:
(1) Placing the PET bottle polyester composition into a dryer for dehumidification and drying, wherein the drying temperature is 140 ℃, and drying is carried out for 4-6 hours;
(2) Then placing the dried and dehumidified polyester composition for PET bottles into an injection molding machine according to the formula amount, setting the temperature of the injection molding machine to 280-290 ℃, and molding for 20 seconds, and injection molding into preformed bottle blanks under the condition;
(3) And (3) naturally placing the preformed bottle blank obtained in the step (2) in air for 48 hours, and then using a bottle blowing machine to blow-mold and stretch at the temperature of 90-120 ℃ to obtain the PET bottle body.
Advantageous effects
(1) According to the invention, the special flow regulator and the special reinforcing agent are added into the polyester composition to improve the flow characteristic of the polyester composition in blow molding, so that the strength of the cooled PET bottle body is not affected, the stretching and hardening effects are realized, the PET bottle body is prevented from being pulled more and thinner, the wall thickness of the PET bottle obtained by blow molding under the same technological conditions is more uniform, and the breakage rate is lower;
(2) According to the invention, the special flow regulator and the special reinforcing agent are added into the polyester composition, so that the mechanical properties of the bottle wall of the PET bottle obtained by the formula are better than those of the PET bottle obtained by single PET blow molding under the same thickness.
Detailed Description
The PET substrate used in the following examples of the present invention was designated SABIC PET BC211.
The flow modifier used in the following examples of the present invention was phosphate having an average particle size of 2. Mu.m.
The reinforcing agent used in the following examples of the present invention was dicyclopentadiene diformate with an average particle size of 2. Mu.m.
The formulations of examples 1-28 are shown in Table 1 in weight percent.
TABLE 1
| Examples | PET(％) | Zirconium hydrogen phosphate (%) | Dicyclopentadiene sodium diformate (%) |
| 1 | 99.6 | 0.1 | 0.3 |
| 2 | 99.4 | 0.1 | 0.5 |
| 3 | 99.2 | 0.1 | 0.7 |
| 4 | 99.0 | 0.1 | 0.9 |
| 5 | 98.8 | 0.1 | 1.1 |
| 6 | 98.6 | 0.1 | 1.3 |
| 7 | 98.4 | 0.1 | 1.5 |
| 8 | 99.5 | 0.2 | 0.3 |
| 9 | 99.3 | 0.2 | 0.5 |
| 10 | 99.1 | 0.2 | 0.7 |
| 11 | 98.9 | 0.2 | 0.9 |
| 12 | 98.7 | 0.2 | 1.1 |
| 13 | 98.5 | 0.2 | 1.3 |
| 14 | 98.3 | 0.2 | 1.5 |
| 15 | 99.4 | 0.3 | 0.3 |
| 16 | 99.2 | 0.3 | 0.5 |
| 17 | 99.0 | 0.3 | 0.7 |
| 18 | 98.8 | 0.3 | 0.9 |
| 19 | 98.6 | 0.3 | 1.1 |
| 20 | 98.4 | 0.3 | 1.3 |
| 21 | 98.2 | 0.3 | 1.5 |
| 22 | 99.2 | 0.5 | 0.3 |
| 23 | 99.0 | 0.5 | 0.5 |
| 24 | 98.8 | 0.5 | 0.7 |
| 25 | 98.6 | 0.5 | 0.9 |
| 26 | 98.4 | 0.5 | 1.1 |
| 27 | 98.2 | 0.5 | 1.3 |
| 28 | 98.0 | 0.5 | 1.5 |
Comparative example 1 the same as example 23, except that the formulation of comparative example 1, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of dicyclopentadiene sodium diformate.
Comparative example 2 the same as example 23, except that the formulation of comparative example 1, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of dicyclopentadiene sodium diformate.
Comparative example 3 the same as example 23, except that the formulation of comparative example 3, in weight percent, is specifically as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of dicyclopentadiene sodium diformate.
Comparative example 4 the same as example 23, except that the formulation of comparative example 4, in weight percent, is as follows:
PET 100％
zirconium hydrogen phosphate 0%
0% of dicyclopentadiene sodium diformate.
Comparative example 5 the same as example 23, except that the formulation of comparative example 5, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of dicyclopentadiene magnesium diformate.
Comparative example 6 the same as example 23, except that the formulation of comparative example 6, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of dicyclopentadiene magnesium diformate.
Comparative example 7 the same as example 23, except that the formulation of comparative example 7, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of magnesium dicyclopentadiene diformate.
Comparative example 8 the same as example 23, except that the formulation of comparative example 8, in weight percent, is specifically as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of dicyclopentadiene magnesium diformate.
Comparative example 9 the same as example 23, except that the formulation of comparative example 9, in weight percent, is specifically as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of dicyclopentadiene calcium diformate.
Comparative example 10 the same as example 23, except that the formulation of comparative example 10, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of dicyclopentadiene calcium diformate.
Comparative example 11 the same as example 23, except that the formulation of comparative example 11, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of dicyclopentadiene calcium diformate.
Comparative example 12 the same as example 23, except that the formulation of comparative example 12, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of dicyclopentadiene calcium diformate.
Comparative example 13 the same as example 23, except that the formulation of comparative example 13, in weight percent, is specifically as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of dicyclopentadiene potassium diformate.
Comparative example 14 the same as example 23, except that the formulation of comparative example 14, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of dicyclopentadiene potassium diformate.
Comparative example 15 the same as example 23, except that the formulation of comparative example 15, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of dicyclopentadiene potassium diformate.
Comparative example 16 the same as example 23, except that the formulation of comparative example 16, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of dicyclopentadiene potassium diformate.
Comparative example 17 is identical to example 23 except that the formulation of comparative example 20 is as follows, in weight percent:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of dicyclopentadiene aluminum diformate.
Comparative example 18 the same as example 23, except that the formulation of comparative example 18, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of dicyclopentadiene aluminum diformate.
Comparative example 19 the same as example 23 was found to be different in that the formulation of comparative example 19, in weight percent, was as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of dicyclopentadiene aluminum diformate.
Comparative example 20 the same as example 23, except that the formulation of comparative example 20, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of dicyclopentadiene aluminum diformate.
Comparative example 21 the same as example 23, except that the formulation of comparative example 21, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of zinc dicyclopentadiene dicarboxylate.
Comparative example 22 the same as example 23, except that the formulation of comparative example 22, in weight percent, was as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of zinc dicyclopentadiene dicarboxylate.
Comparative example 23 the same as example 23 was found to be different in that the formulation of comparative example 23, in weight percent, was as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of zinc dicyclopentadiene diformate.
Comparative example 24 the same as example 23, except that the formulation of comparative example 24, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of zinc dicyclopentadiene dicarboxylate.
Comparative example 25 the same as example 23, except that the formulation of comparative example 25, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of dicyclopentadiene lithium diformate.
Comparative example 26 the same as example 23, except that the formulation of comparative example 26, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of dicyclopentadiene lithium diformate.
Comparative example 27 the same as example 23, except that the formulation of comparative example 27, in weight percent, was as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of dicyclopentadiene lithium diformate.
Comparative example 28 the same as example 23, except that the formulation of comparative example 28, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of dicyclopentadiene lithium diformate.
Comparative example 29 the same as example 23, except that the formulation of comparative example 29, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of manganese dicyclopentadiene diformate.
Comparative example 30 the same as example 23, except that the formulation of comparative example 30, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of manganese dicyclopentadiene diformate.
Comparative example 31 the same as example 23, except that the formulation of comparative example 31, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of manganese dicyclopentadiene diformate.
Comparative example 32 the same as example 23, except that the formulation of comparative example 32, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of manganese dicyclopentadiene diformate.
Comparative example 33 the same as example 23, except that the formulation of comparative example 33, in weight percent, was as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of dicyclopentadiene iron diformate.
Comparative example 34 the same as example 23, except that the formulation of comparative example 34, in weight percent, was as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of dicyclopentadiene iron diformate.
Comparative example 35 the same as example 23, except that the formulation of comparative example 35, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of dicyclopentadiene iron diformate.
Comparative example 36 the same as example 23, except that the formulation of comparative example 36, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of dicyclopentadiene iron diformate.
Comparative example 37 the same as example 23, except that the formulation of comparative example 37, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of dicyclopentadiene ferrous diformate.
Comparative example 38 the same as example 23, except that the formulation of comparative example 38, in weight percent, was as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of dicyclopentadiene ferrous diformate.
Comparative example 39 is the same as example 23 except that the formulation of comparative example 39 is specifically as follows in weight percent:
PET 99％
zirconium hydrogen phosphate 1%
0% of dicyclopentadiene ferrous diformate.
Comparative example 40 the same as example 23, except that the formulation of comparative example 40, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of dicyclopentadiene ferrous diformate.
Comparative example 41 the same as example 23, except that the formulation of comparative example 41, in weight percent, is specifically as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of copper dicyclopentadiene dicarboxylate.
Comparative example 42 the same as example 23, except that the formulation of comparative example 42, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of copper dicyclopentadiene dicarboxylate.
Comparative example 43 is the same as example 23 except that the formulation of comparative example 43 is specifically as follows in weight percent:
PET 99％
zirconium hydrogen phosphate 1%
0% of copper dicyclopentadiene dicarboxylate.
Comparative example 44 the same as example 23, except that the formulation of comparative example 44, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of copper dicyclopentadiene dicarboxylate.
Comparative example 45 the same as example 23, except that the formulation of comparative example 45, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.5%
0.5% of cobalt dicyclopentadiene diformate.
Comparative example 46 the same as example 23, except that the formulation of comparative example 46, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0.8%
0.2% of cobalt dicyclopentadiene diformate.
Comparative example 47 the same as example 23 except that the formulation of comparative example 47, in weight percent, was as follows:
PET 99％
zirconium hydrogen phosphate 1%
0% of cobalt dicyclopentadiene diformate.
Comparative example 48 the same as example 23, except that the formulation of comparative example 48, in weight percent, is as follows:
PET 99％
zirconium hydrogen phosphate 0%
1% of cobalt dicyclopentadiene diformate.
Comparative example 49 the same as example 23, except that the formulation of comparative example 49, in weight percent, is specifically as follows:
PET 99％
strontium phosphate 0.5%
0.5% of dicyclopentadiene sodium diformate.
Comparative example 50 the same as example 23, except that the formulation of comparative example 50, in weight percent, is as follows:
PET 99％
strontium phosphate 0.8%
0.2% of dicyclopentadiene sodium diformate.
Comparative example 51 the same as example 23, except that the formulation of comparative example 51, in weight percent, was as follows:
PET 99％
strontium phosphate 1%
0% of dicyclopentadiene sodium diformate.
Comparative example 52 the same as example 23, except that the formulation of comparative example 52, in weight percent, is specifically as follows:
PET 99％
strontium phosphate 0%
1% of dicyclopentadiene sodium diformate.
Comparative example 53 the same as in example 23, except that the formulation of comparative example 53, in weight percent, was as follows:
PET 99％
manganese phosphate 0.5%
0.5% of dicyclopentadiene sodium diformate.
Comparative example 54 is the same as example 23 except that the formulation of comparative example 54, in weight percent, is as follows:
PET 99％
manganese phosphate 0.8%
0.2% of dicyclopentadiene sodium diformate.
Comparative example 55 the same as example 23 except that the formulation of comparative example 55, in weight percent, was as follows:
PET 99％
manganese phosphate 1%
0% of dicyclopentadiene sodium diformate.
Comparative example 56 the same as example 23, except that the formulation of comparative example 56, in weight percent, is as follows:
PET 99％
manganese phosphate 0%
1% of dicyclopentadiene sodium diformate.
Application:
(1) The PET bottle polyester compositions of examples 1-28 and comparative examples 1-56 were all placed in a desiccator to be dehumidified and dried at 140℃for 6 hours;
(2) Respectively placing the dried and dehumidified polyester composition for PET bottles into an injection molding machine according to the formula amount, setting the temperature of the injection molding machine to 290 ℃, and performing molding for 20 seconds in a molding period, and performing injection molding under the condition to obtain preformed bottle blanks;
(3) And (3) naturally placing the preformed bottle blanks obtained in the step (2) in air for 48 hours, and then using a bottle blowing machine to blow-mold at the temperature of 90 ℃ to obtain PET bottle bodies with the same external dimensions.
Performance test:
the PET bottles obtained in examples 1 to 28 and comparative examples 1 to 56 were subjected to the relevant performance tests, respectively, with the specific test results shown in Table 2, table 3-1 and Table 3-2, respectively, wherein,
internal pressure resistance test (number of passes per 40 tests): test standard QB/T1868-2004.
TABLE 2
| Examples | Bottle weight (g) | Number of pressure-resistant passages |
| 1 | 25 | 33 |
| 2 | 25 | 34 |
| 3 | 25 | 34 |
| 4 | 25 | 35 |
| 5 | 25 | 36 |
| 6 | 25 | 37 |
| 7 | 25 | 37 |
| 8 | 25 | 34 |
| 9 | 25 | 35 |
| 10 | 25 | 36 |
| 11 | 25 | 36 |
Continuous table 2
| Examples | Bottle weight (g) | Number of pressure-resistant passages |
| 12 | 25 | 37 |
| 13 | 25 | 38 |
| 14 | 25 | 38 |
| 15 | 25 | 36 |
| 16 | 25 | 36 |
| 17 | 25 | 37 |
| 18 | 25 | 38 |
| 19 | 25 | 38 |
| 20 | 25 | 39 |
| 21 | 25 | 39 |
| 22 | 25 | 37 |
| 23 | 25 | 38 |
| 24 | 25 | 38 |
| 25 | 25 | 39 |
| 26 | 25 | 39 |
| 27 | 25 | 40 |
| 28 | 25 | 40 |
TABLE 3 Table 3
| Comparative example | Bottle weight (g) | Number of pressure-resistant passages |
| 1 | 25 | 34 |
| 2 | 25 | 30 |
| 3 | 25 | 32 |
| 4 | 25 | 22 |
| 5 | 25 | 37 |
| 6 | 25 | 32 |
| 7 | 25 | 28 |
| 8 | 25 | 30 |
| 9 | 25 | 36 |
| 10 | 25 | 33 |
| 11 | 25 | 29 |
| 12 | 25 | 31 |
Continuous Table 3-1
| Comparative example | Bottle weight (g) | Number of pressure-resistant passages |
| 13 | 25 | 35 |
| 14 | 25 | 32 |
| 15 | 25 | 28 |
| 16 | 25 | 30 |
| 17 | 25 | 37 |
| 18 | 25 | 31 |
| 19 | 25 | 27 |
| 20 | 25 | 29 |
| 21 | 25 | 36 |
| 22 | 25 | 32 |
| 23 | 25 | 28 |
| 24 | 25 | 30 |
| 25 | 25 | 35 |
| 26 | 25 | 33 |
| 27 | 25 | 29 |
| 28 | 25 | 31 |
| 29 | 25 | 36 |
| 30 | 25 | 33 |
| 31 | 25 | 29 |
| 32 | 25 | 31 |
| 33 | 25 | 37 |
| 34 | 25 | 31 |
| 35 | 25 | 27 |
| 36 | 25 | 29 |
| 37 | 25 | 36 |
| 38 | 25 | 33 |
| 39 | 25 | 27 |
| 40 | 25 | 29 |
| 41 | 25 | 36 |
| 42 | 25 | 31 |
| 43 | 25 | 27 |
| 44 | 25 | 29 |
| 45 | 25 | 37 |
Continuous Table 3-2
| Comparative example | Bottle weight (g) | Number of pressure-resistant passages |
| 46 | 25 | 32 |
| 47 | 25 | 27 |
| 48 | 25 | 30 |
| 49 | 25 | 36 |
| 50 | 25 | 31 |
| 51 | 25 | 26 |
| 52 | 25 | 28 |
| 53 | 25 | 36 |
| 54 | 25 | 33 |
| 55 | 25 | 28 |
| 56 | 25 | 30 |
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (5)
1. The polyester composition for the high-strength transparent PET bottle is characterized by comprising the following components in percentage by mass:
98.0 to 99.7 percent of PET base material
Flow regulator 0.1-0.5%
0.2-1.5% of reinforcing agent;
the mass ratio of the flow regulator to the reinforcing agent is 1:1-12;
the flow regulator is zirconium hydrogen phosphate;
the reinforcing agent is dicyclopentadiene sodium diformate;
the PET substrate is polyethylene terephthalate with an intrinsic viscosity of 0.68-0.80 dL/g.
2. The polyester composition for high-strength transparent PET bottles according to claim 1 wherein said zirconium hydrogen phosphate has an average particle diameter of 0.5 to 4. Mu.m.
3. The polyester composition for high-strength transparent PET bottles according to claim 1 wherein said sodium dicyclopentadiene diformate has an average particle diameter of 0.5 to 4. Mu.m.
4. A PET bottle prepared from the polyester composition for a high-strength transparent PET bottle according to any one of claims 1 to 3, which is processed by blow molding.
5. The method for producing a PET bottle from a polyester composition for a high-strength transparent PET bottle according to claim 4, comprising the steps of:
(1) Placing the PET bottle polyester composition into a dryer for dehumidification and drying, wherein the drying temperature is 140 ℃, and drying is carried out for 4-6 hours;
(2) Then placing the dried and dehumidified polyester composition for PET bottles into an injection molding machine according to the formula amount, setting the temperature of the injection molding machine to 280-290 ℃, and molding for 20 seconds, and injection molding into preformed bottle blanks under the condition; (3) And (3) naturally placing the preformed bottle blank obtained in the step (2) in air for 48 hours, and then blow molding and stretching the preformed bottle blank by using a bottle blowing machine at the temperature of 90-120 ℃ to obtain the PET bottle body.
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