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Resin composition for cleaning of resin molding machines

A resin composition, resin molding technology, applied in the directions of organic cleaning compositions, detergent compositions, cleaning composition dyes, etc., can solve problems such as a large amount of resin, long time, etc., and achieve easy confirmation, shortening time, and shortening cleaning time. Effect

Inactive Publication Date: 2012-01-25
DAICEL POLYMER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the case where the above-mentioned cleaning agent remains, it is possible to inject the resin for the subsequent molding process and squeeze out the above-mentioned cleaning agent, but there are still problems that it is difficult to judge when the end is completed, and a large amount of resin and a long time are required to replace the next resin.

Method used

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  • Resin composition for cleaning of resin molding machines
  • Resin composition for cleaning of resin molding machines
  • Resin composition for cleaning of resin molding machines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Using an injection molding machine ("Mitsubishi Injection Molding Machine 265 / 100MSII" manufactured by Mitsubishi Heavy Industries, Ltd.), 1 kg of ABS resin was injected and molded at a molding temperature of 230°C. The composition of Example 1 (with tracer substance) shown in Table 1 was then injected.

[0039] Then, POM colored black (manufactured by Polyplastic Corporation, DURACON M90-44) was charged into the injection molding machine, and a test molded product (100 mm×100 mm×3 mm) was molded.

[0040] After the start of molding, the cleaning resin composition of Example 1 was visible to the naked eye in the first and second test molded articles, and the cleaning resin composition of Example 1 was not mixed in the third test molded article. When it is irradiated with UV light (wavelength 365nm) at this time, since a part of it emits light ( figure 1 ), it was confirmed that the resin composition for cleaning of Example 1 was mixed (that is, the resin composition fo...

Embodiment 2

[0043] The same test as in Example 1 was carried out using the composition of Example 2 shown in Table 1 (containing a tracer substance). As a result, no light emission was confirmed when the 15th test molded product was molded, so it was judged that the cleaning resin composition of Example 2 did not remain in the injection molding machine at this time.

[0044] Table 1

[0045]

[0046]The values ​​in Table 1 are expressed in kg.

[0047] AS resin: Cevian N080SF manufactured by Daicel Polymer Co., Ltd.

[0048] Polypropylene resin: Prime Polypro F-300SP manufactured by Prime Polymer Co., Ltd. (melt flow rate 3 g / 10 minutes (230° C. / 2.16 kg)

[0049] Fluorescent pigment: DAYGLO LFY (AR Brown company)

[0050] Optical brightener: Hostalux KS1 (manufactured by Clariant)

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Abstract

A resin molding machine is cleaned using a resin composition for cleaning of resin molding machines, said resin composition for cleaning of resin molding machines containing a thermoplastic resin and a fluorescent tracer substance. After cleaning the resin molding machine, which has been performed a molding process of a resin, using the resin composition for cleaning, the resin composition for cleaning remaining in the resin molding machine after the cleaning is extruded and removed therefrom by a molding resin used in the succeeding molding process. In the extrusion and removal step of the resin composition for cleaning, after a molded body is obtained from the molding resin used in the succeeding molding process, the presence or absence of a residue of the resin composition for cleaning can be determined by checking the presence or absence of fluorescence in the surface of the molded body.

Description

technical field [0001] The present invention relates to a resin composition for cleaning resin molding processing machines and a method of cleaning resin molding processing machines using the composition. Background technique [0002] Thermoplastic resins can be used in a wide range of injection molded products, extrusion molded products, and films. These plastic molded products tend to have more varieties and less output, and the frequency of variety replacement is increasing. Therefore, cleaning inside the molding machine is becoming more and more important in quality management when the variety is changed. In molding processing of thermoplastic resins, a method of cleaning a molding machine using a cleaning agent is known as a method of cleaning a molding machine when a type is changed. [0003] In the cleaning method using a cleaning agent, even if the original reagent can be completely discharged, there is still a problem that the cleaning agent remains. [0004] If t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/72C08K5/00C08L101/00C11D3/37C11D3/40
CPCC08K5/0041C11D3/37B29C33/722G01N21/6447G01N21/8803C11D3/42C08K5/0008C11D11/0041
Inventor 胁田直树
Owner DAICEL POLYMER LTD
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