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Method for producing a polyolefin structure

一种聚烯烃系、制造方法的技术，应用在聚烯烃系结构物的制造领域，能够解决飞散于大气中等问题，达到阻隔性能优异的效果

Active Publication Date: 2016-04-20
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many of the above applications use high-density polyethylene (hereinafter, sometimes referred to as "HDPE"). Although it has excellent mechanical strength, molding processability, and economical efficiency, there is a problem that items stored in the container are easily scattered into the atmosphere through the HDPE wall. Disadvantages in

Method used

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  • Method for producing a polyolefin structure
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  • Method for producing a polyolefin structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 101

[0239]A single-screw extruder equipped with a full-flight screw inserted with a diameter=50mm, L / D=25, length ratio of supply part / compression part / measurement part=33 / 33 / 33%, compression ratio=2.5, transfer A single-layer direct blow container molding machine, such as a cylinder mold with a parison adjuster (die head; the width of the narrowest part of the die hole: 1mm), a mold, a mold clamping machine, and a cooler, is molded as follows bottle. From the extruder hopper with the ratio of HDPE-1 / AD-1 / PA-1=80 / 10 / 10 (mass %), the mixed particles of dry mixing are dropped into the single-screw extruder, and the screw speed is set to 30 rpm, the parison was extruded from the cylinder die, and a bottle with a threaded plug with an inner volume of 400 ml and a thickness of 1 mm was formed by direct blow molding. At this time, the barrel temperature of the extruder was set to C1 / C2 / C3=180 / 190 / 230°C, the temperature of the adapter was set to 240°C, and the temperature of the die was...

Embodiment 102～109

[0242] Except that the types, compounding amounts, and respective set temperatures of the polyolefin (A), acid-modified polyolefin (B), and gas barrier resin (C) were changed as shown in Table 1, the procedure was carried out in the same manner as in Example 101. , for the molding of bottles with screw caps.

[0243] The toluene transmission rate measurement and the drop test were implemented about the obtained bottle. The results are shown in Table 1.

Embodiment 110

[0245] Except that the container and overflow produced in Example 101 were pulverized and dry-blended at the ratio of HDPE-1 / AD-1 / PA-1 / crushed product=48 / 6 / 6 / 40 (mass %), the same as Example 101 101 is similarly operated to form a bottle with a screw cap.

[0246] The toluene transmission rate measurement and the drop test were implemented about the obtained bottle. The results are shown in Table 1.

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Abstract

The method for producing a polyolefin structure of the invention produces a polyolefin structure under the following conditions from a mixed raw material of polyolefin (A), acid-modified polyolefin (B), and gas barrier resin (C) using a molding machine (10). The molding machine (10) is provided with a single-screw extruder (11), die head (12), and adapter (13) for sending the mixed raw material from the single-screw extruder (11) to the die head (12). Am+10 DEG C < / = T1 < / = Cm-10 DEG C (1) Cm-30 DEG C < / = T2 < / = Cm+30 DEG C (2) Cm-10 DEG C < / = T3 < / = Cm+50 DEG C (3) Cm-30 DEG C < / = T4 < / = Cm+30 DEG C (4) T1 is the cylinder temperature of the feed unit (21A) and the compression unit (21B), T2 is the cylinder temperature of the metering unit (21C), T3 is the temperature of the adapter (13), T4 is the temperature of the die head, Am is the melting point of component (A), and Cm is the melting point of component (C).

Description

technical field [0001] The present invention relates to a method for producing a polyolefin-based structure containing a gas barrier resin. Background technique [0002] Examples of containers for storing hydrocarbons and various chemicals, or tubes for transport include bottles for chemicals, fuel tanks for automobiles and small engines, fuel pipes, and the like. Most of the metals and glass that have been used as raw materials in the past are gradually replaced by plastics. Compared with metal and glass, plastic has the characteristics of light weight, no need for anti-rust treatment, less cracking, and high degree of freedom in shape. [0003] Many of the above applications use high-density polyethylene (hereinafter, sometimes referred to as "HDPE"). Although it has excellent mechanical strength, molding processability, and economical efficiency, there is a problem that items stored in the container are easily scattered into the atmosphere through the HDPE wall. shortco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/92B29C48/09B29C48/32B29C48/395B29C48/92
CPCB29C48/875B29C48/09B29C48/0017B29C48/32B29C48/92B29C2948/92704B29C48/08B29B17/0005B29K2023/00B29K2077/00B29K2023/065B29K2995/0067
Inventor 石井健太郎加藤智则三田寺淳河野宪治
Owner MITSUBISHI GAS CHEM CO INC
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