Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of high density polyethylene resin special for abnormal-shape bottles

A high-density polyethylene and polyethylene special-shaped technology, which is applied in the field of high-end food and medicine packaging bottles, can solve the problems of increasing labor intensity of workers, high prices of raw materials in the same period, and easy deformation of bottles, so as to improve the appearance of finished products and improve production and processing. The effect of high efficiency and chemical resistance

Active Publication Date: 2013-12-04
PETROCHINA CO LTD
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the special-shaped bottles produced by the hollow resin HDPE6400 that can be used as food packaging in foreign countries are difficult to seal due to the high hardness, and the price of raw materials is higher than that in China at the same time; while several domestic hollow resins - HD5502FA, 5000B, 5300B, etc. Both cannot meet the production requirements of special-shaped bottles alone. Some bottle manufacturers use two kinds of general resins such as HD5502FA, 5000S, 7750, 5300B, and 5621D to blend production according to a certain formula and ratio.
[0005] In the process of producing special-shaped bottles with blended resin, due to the defects of the raw materials themselves, the quality fluctuation between batches and the uneven mixing of raw materials, it is difficult to form the preform and the flow rate is unstable, the product wall thickness is uneven, and the surface is uneven. Smooth—with orange peel or streamlines on the ear, easy deformation of the bottle after high-temperature sterilization, peculiar smell of the contents, long bottle making cycle, low production efficiency, high processing temperature, high energy consumption, low yield, and low product yield. Disadvantages such as high cost, and because of the need to blend the two raw materials, it increases the labor intensity of workers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of high density polyethylene resin special for abnormal-shape bottles
  • Preparation method of high density polyethylene resin special for abnormal-shape bottles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The compound antioxidant consists of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, tris(2,4-di-tert-butylphenyl) phosphite, thio Dilauryl dipropionate is prepared according to the ratio of 60 / 24 / 16 (mass percentage).

[0031] On the HDPE device, a special processing aid compounded by antioxidant, lubricant calcium stearate, fluoroelastomer and oxidized polyethylene wax according to 10 / 50 / 20 / 20 (mass percentage) is added to the base resin, The addition amount is 0.6% (mass percentage), and it is melted, extruded and granulated in an extruder to directly prepare high-density polyethylene special-shaped bottle resin.

[0032] The physical property analysis and test of the obtained special resin are shown in Table 1, and the post-processing results are shown in Table 2.

Embodiment 2

[0034] The composite antioxidant consists of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, pentaerythritol bisphosphite di(octadecanol) ester, dithiodipropionate Lauryl ester is prepared according to the ratio of 60 / 24 / 16 (mass percentage).

[0035] On the HDPE device, a special composite processing compounded by antioxidant, lubricant calcium stearate, fluoroelastomer and oxidized polyethylene wax according to the ratio of 10 / 50 / 20 / 20 (mass percentage) is added to the base resin Auxiliary, added in an amount of 0.6% (mass percentage), melted and extruded in an extruder to granulate, and directly prepared high-density polyethylene special-shaped bottle resin.

[0036] The physical property analysis and test of the obtained special resin are shown in Table 1, and the post-processing results are shown in Table 2.

Embodiment 3

[0038] The composite antioxidant is composed of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate n-octadecanoate, tris(2,4-di-tert-butylphenyl) phosphite, thio Dilauryl dipropionate is prepared according to the ratio of 60 / 24 / 16 (mass percentage).

[0039] On the HDPE device, a special composite processing compounded by antioxidant, lubricant calcium stearate, fluoroelastomer and oxidized polyethylene wax according to the ratio of 10 / 50 / 20 / 20 (mass percentage) is added to the base resin Auxiliary, added in an amount of 0.6% (mass percentage), melted and extruded in an extruder to granulate, and directly prepared high-density polyethylene special-shaped bottle resin.

[0040] The physical property analysis and test of the obtained special resin are shown in Table 1, and the post-processing results are shown in Table 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of high density polyethylene resin special for abnormal-shape bottles; in a granulation workshop section of a high density polyethylene device, 0.01-0.8% by mass percentage of a composite processing additive is added for direct preparation of the high density polyethylene resin special for the abnormal-shape bottles; the composite processing additive is prepared from the following substances: by mass, 10-20% of an antioxidant, 35-50% of a lubricant, 20-30% of a fluorine elastomer and 15-20% of oxidized polyethylene wax; the resin has the characteristics of moderate melt strength and wide molecular weight distribution, and the characteristics are necessary for a special material suitable for blowing the abnormal-shape bottles; the resin has excellent processing performances, and solves the problems that: during production of the abnormal-shape bottles by use of blend resin, the produced abnormal-shape bottles have unsmooth surfaces and uneven wall thickness, articles contained in the abnormal-shape bottles may produce peculiar smell, and the like.

Description

Technical field: [0001] The invention relates to a method for preparing a special-purpose resin for HDPE special-shaped bottles. The product is mainly used in the field of high-grade food and medicine packaging bottles with good blowing processing performance, high hygienic performance requirements and special appearance. Background technique: [0002] High-density polyethylene (HDPE) is widely used in the field of blow molding packaging because of its non-hygroscopicity and water vapor resistance. In recent years, it has been used to blow packaging products with special shapes - special-shaped bottles, and the amount of raw materials required has increased year by year. [0003] Due to the particularity of the shape of special-shaped bottles, the bottle-making raw materials are required to have good fluidity and melt strength to meet the formability and appearance requirements of special-shaped products. [0004] At present, the special-shaped bottles produced by the hollow...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/30C08K5/134C08K5/20C08K5/526C08K5/524C08K5/372C08K5/098
Inventor 王世华于波曹景良邹恩广王天江赵炳阳徐世杰吴林美姜进宪王熺王登飞邱丽萍赵成才张洪达陈雷安彦杰葛藤杰王文燕张德英张明强李波王涛宋磊李冬霞方宏王华张瑞韦德帅侯雅丽曹鸿郭桂悦李峰
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com