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Electroconductive composite plastics sheet

A composite plastic, conductive technology, used in rigid containers, electrical components, thin material processing, etc., can solve problems such as unavailability and difficulty in changing heat sealing conditions.

Inactive Publication Date: 2005-09-28
DAICEL POLYMER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the heat-sealing process of the cover sheet, it is difficult to change the heat-sealing conditions in each operation. Therefore, it is required that the peel strength of the cover sheet heat-sealed under the same conditions has sufficient reproducibility. Within the range of ±0.10N, those beyond the range of ±0.15N cannot be used for practical use

Method used

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  • Electroconductive composite plastics sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0088] Embodiment 1~5, comparative example 1~6

[0089] After melting and kneading the sheet base components with the composition (expressed in mass %) shown in Table 1 through a twin-screw extruder (PCM30 / 2-28.5-2V manufactured by Ikegai Co., Ltd.), extrude them into strands The extrudate was cut to obtain resin chips for sheet substrates.

[0090] Next, this resin chip was supplied to the φ50mm extruder of the multilayer extruder, and the resin composition (expressed in mass %) forming the conductive resin layer was supplied to the φ30mm extruder, and they were co-extruded, A composite conductive plastic sheet having conductive resin layers on both surfaces of the sheet base was obtained. The above-mentioned various tests were carried out on these sheets, and the results are shown in Table 1.

[0091] comparative example

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Abstract

The invention relates to an electroconductive composite plastics sheet preferable as a carrier tape for accommodating electronic parts. Specifically, it relates to an electroconductive composite plastics sheet comprising a thermoplastic resin-containing sheet substrate and an electroconductive resin layer formed on the surface of the sheet substrate, wherein the sheet substrate comprises a styrene-based resin, and the electroconductive resin layer is a layer consisting of an electroconductive resin composition comprising (A-1) styrene-based resin, (A-2) carbon black, and (A-3) one kind of copolymer, or a mixture consisting of a combination of two or more kinds of copolymers, obtained from ethylene and other monomers copolymerizable with ethylene, wherein the content of the other monomers copolymerizable with ethylene is 6 to 14 mass % on the average, and the ratio in thickness of the sheet substrate and electroconductive resin layer is in the range of 4 / 1 to 20 / 1, and the total thickness is in the range of 0.1 to 1.0 mm.

Description

technical field [0001] The present invention relates to a conductive composite plastic sheet and a conductive plastic container suitable as packaging materials for integrated circuits (ICs) or electronic components using ICs. Background technique [0002] ICs or electronic components using ICs may be damaged if exposed to static electricity, so conductive plastic sheets are used as packaging materials to impart antistatic effects. Known as packaging materials utilizing conductive plastic sheets are, for example, embossed pallets. [0003] The embossed support sheet is regulated in JIS C0806, and it is used for storing and transporting electronic components. Embossing processing to form recesses (grooves) for mounting parts, thereby manufacturing embossed holders. (For example, refer to FIG. 1 and FIG. 2 of JP-A-3-87097). [0004] Such an embossed carrier sheet accommodates the electronic components in the pocket, and then heat-seals the cover sheet from above, and is used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D73/02B29C70/88B32B27/30B65D1/00B65D65/40C08K3/04C08L25/08H05K9/00H05K13/00
CPCH05K13/0084Y10T428/1352B32B7/025B32B27/08B32B27/20B32B2439/00
Inventor 胁田直树
Owner DAICEL POLYMER LTD