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Polyolefin resin foam and manufacturing method thereof

A technology of polyolefin resin and manufacturing method, which is applied in the field of polyolefin resin foam and its manufacturing, can solve the problems such as difficult to show antistatic effect, pollution, and stickiness, and achieve good appearance, high independent cell rate, and apparent The effect of low density

Active Publication Date: 2005-09-21
JSP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the surfactant-type antistatic agent has the problem that the antistatic effect is difficult to show in an environment with low humidity
On the other hand, in an environment with high humidity, although the antistatic effect appears, due to the transfer of the antistatic agent that absorbs moisture to the packaged body, the surface of the packaged body becomes sticky, whitened, etc., causing the packaged body to be damaged. extent of surface contamination

Method used

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  • Polyolefin resin foam and manufacturing method thereof
  • Polyolefin resin foam and manufacturing method thereof
  • Polyolefin resin foam and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0200] As polyolefin resin, with respect to 100 weight parts of PE1 (low-density polyethylene), mix 2 weight parts of cell regulator masterbatch, with respect to 100 weight parts of low-density polyethylene, add polymer type antistatic agent P1 [Pelestat 300 ] 6.4 parts by weight, supplied from the raw material inlet of an extruder with an inner diameter of 90 mm, heated and kneaded, and turned into an adjusted resin melt at about 200° C. Mixed butane of 70% by weight of n-butane and 30% by weight of isobutane was pressurized into the above resin melt so as to be 25 parts by weight relative to 100 parts by weight of low-density polyethylene. The extruder of diameter 120mm that is connected to the downstream side of the extruder of above-mentioned diameter 90mm supplies resin melt again, and the foaming temperature of the polyolefin resin melt after regulating cooling is 110 ℃, and die head pressure is 7~10MPa ( G) to become a foamable polyolefin resin melt, and the foamable po...

Embodiment 2

[0202] A foamed sheet was obtained in the same manner as in Example 1, except that PE2 (low-density polyethylene) was used as the main raw material for the polyolefin resin, the compounding amount of mixed butane was adjusted to 27 parts by weight, and the foaming temperature was 108°C.

Embodiment 3

[0204] Except that the blending amount of the physical foaming agent was 23 parts by weight, 4.7 parts by weight of P1 [Pelestat 300] was added as a polymer antistatic agent, and the foaming temperature was adjusted to 111° C., the rest was the same as in Example 1 to obtain a foamed sheet.

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Abstract

The present invention provides a manufacturing method of a polyolefin resin foamed body which, when used as a packaging material, has least possibility of contaminating the surface of a contacting material, which excels in appearance and which shows antistatic characteristics uniform over the entire surface, and provides the polyolefin resin foamed body. The present invention comprises a specific mount of a polymer type antistatic agent whose apparent density may be 15 to 65 g / L, whose specific surface inherent resistance rate is 1 X 108 to 1 X 1013 (ohm), and whose average foamed body diameter meets a specific relationship.

Description

technical field [0001] The invention relates to a polyolefin resin foam with antistatic performance and a manufacturing method thereof, in particular to a polyolefin resin foam with excellent charging performance and low apparent density and a manufacturing method thereof. Background technique [0002] Conventional foams made of polyolefin resins are widely used as cushioning materials and packaging materials because they are rich in flexibility and cushioning properties, making it difficult to damage the packaged objects. In particular, polyethylene resin foams are widely used because they can be easily produced with high foaming and low cost. However, due to the bad properties of this foam, which is very easy to absorb dust due to static electricity, polyolefin resin foams with antistatic properties that use antistatic agents to improve conductivity are gradually being developed and applied. [0003] As means for imparting the above-mentioned antistatic performance, surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/12B29C47/00B29K23/00B29K105/04C08J9/00C08J9/04C08L23/00C08L23/06C08L23/12C08L101/00
CPCC08J9/18C08J9/12C08L23/06C08L23/12C08L2666/86C08J2323/06C08J2323/12B29C48/0012
Inventor 森田和彦岩崎聪
Owner JSP CORP
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