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Elastomer composition, method for producing the same, and eraser using the same

A manufacturing method and elastic body technology, applied in office supplies, erasers, printing, etc., to achieve the effect of realizing cost, process simplification, and easy recycling

Inactive Publication Date: 2008-08-13
VIEWDLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current social system produces economic abundance and convenience, but on the other hand, environmental problems such as global warming and harmful substances have become serious due to the discharge of waste and carbon dioxide that exceed natural purification capabilities.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11

[0100] The natural rubber, softener, and filler of the materials shown in Table 2 were kneaded in advance with a pressure kneader, and a rubber crosslinking agent was added with a roller to obtain a rubber kneaded product. The resulting rubber mixture was cut into pellets about 5 mm square. Next, the twin screw extruder KZW-15 TW-60 (completely bite type in the same direction, screw diameter 15mm, L / D=60) manufactured by Technopol was used to combine the rubber compound pellets and the biomass plastic pellets in Table 2 The indicated mixing ratios were each supplied with a quantitative feeder, and kneaded at a screw rotation speed of 400 rpm. The barrel temperature is set to 120-190°C, and the kneading temperature is higher than the melting point (170°C) of the biomass plastic and higher than the rubber crosslinking temperature (180°C).

[0101] The obtained composition pellets were extruded into a square rod shape with a single-screw extruder (barrel temperature 90~110℃, die temp...

reference example 1～2

[0117] Reference example 1~2: Manufacture of elastic body erasing tool

[0118] Among the materials shown in Table 4, natural rubber, softener, and filler were kneaded in advance with a pressure kneader, and a rubber crosslinking agent was added with a roller to obtain a rubber kneaded product. The resulting rubber kneaded product was cut into pellets about 5 mm square. Next, the twin screw extruder KZW-15 TW-60 (completely bite type in the same direction, screw diameter 15mm, L / D=60) manufactured by Tekunopil was used to combine the rubber compound pellets and the biomass plastic pellets in Table 4 The mixing ratios shown were each supplied with a quantitative feeder, the screw rotation speed was set to 400 rpm, and the barrel temperature was set to 120 to 190°C for kneading, and the mixture was cut into 3 mm square pellets.

[0119] The obtained composition pellets were extruded into a square rod shape with a single screw extruder (cylinder temperature 100-120°C, die temperature...

reference example 3

[0123] Reference example 3: Manufacturing of vinyl chloride resin erasing tools

[0124] As shown in Table 5, the vinyl chloride resin, plasticizer, filler, and stabilizer were mixed and stirred to obtain a paste sol. After vacuum degassing the obtained paste sol, it was poured into a molding mold (inner size: 100×100×10mm) kept at 130°C, heated for 26 minutes, then cooled, taken out of the mold, and cut to produce vinyl chloride resin Elimination tool (size: 10×18×43mm).

[0125] The hardness and the erasure rate of the character erasing tool obtained by the evaluation were measured by the same method as in Examples 1-11. The results are shown in Table 5.

[0126] [table 5]

[0127] Reference example 3

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PUM

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Abstract

Disclosed is an elastomer composition which is characterized in that crosslinked natural rubber particles are dispersed like islands in a matrix of a biomass plastic. Also disclosed is an eraser using such an elastomer composition as a base material. The elastomer composition and the eraser do not depend on fossil resources, while being recyclable. Consequently, the elastomer composition and the eraser are environmental friendly and suited to the recycling-oriented society.

Description

Technical field [0001] The present invention relates to an elastomer composition, a manufacturing method thereof, and a character erasing tool (字消し) using the composition. More specifically, it relates to elasticity that does not depend on fossil resources, can be recycled, is beneficial to the environment, and adapts to a recycling-oriented society Body composition, its manufacturing method and erasing tool using the composition. Background technique [0002] In the past, industry and economy developed through the use of fossil resources such as oil and coal, and built a social system of mass production, mass consumption, and mass abandonment. Now, most of the living foundation depends on fossil resources that may be depleted. [0003] The current social system produces economic abundance and convenience, but on the other hand, environmental problems such as global warming and harmful substances have become serious due to the discharge of waste and carbon dioxide that exceed the...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L67/00C08L77/02C08L1/12C08L3/06C08L5/08C08L29/04C08K5/10C08K3/26C08L27/06B43L19/00
Inventor 森本和树西冈靖博
Owner VIEWDLE INC
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