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Plastic molded body

A plastic molding, concave and convex technology, applied in the direction of covering/exterior paint, other household appliances, transportation and packaging, which can solve the problem of reduced, reduced leakage and liquid rolling, unavoidable leakage and liquid rolling. problems such as falling properties, to achieve the effect of ensuring liquid rolling, ensuring liquid leakage, and stabilizing liquid leakage

Active Publication Date: 2017-08-29
TOYO SEIKAN GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, even this means has limitations in suppressing the decrease in leakage and liquid roll-off
That is, the entry of liquid into the secondary asperities cannot be completely prevented, and the liquid leakage and liquid roll-off properties obtained by the air pockets formed in the secondary asperities gradually decrease, so that the liquid gradually enters the primary asperities, with the result that it cannot be avoided Reduced leakage and liquid roll-off

Method used

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  • Plastic molded body
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0128] The following examples are provided to illustrate the excellent properties of the present invention.

[0129] (1) Substrate;

[0130] *Material: Low Density Polyethylene

[0131] Grade: LJ8041 (Japan Polyethylene Corporation)

[0132] *Dimensions: 58mm(length)×58mm(width)×3mm(thickness)

[0133] (2) impression;

[0134] ·Production method:

[0135] ·One-time concave-convex impression

[0136] A master was fabricated by photolithography to obtain a stamp with primary concavities and convexities etched by Ni electroforming.

[0137] ·A bump

[0138] φ s =0.2 (s=20μm, d=30μm, pitch=100μm)

[0139] ·Secondary concave-convex impression

[0140] A master mold produced by Cu electroforming was wet-etched to form a rough surface, so that a stamp having secondary unevenness engraved by Ni electroforming was obtained.

[0141] ·Secondary bump

[0142] Ra / RSm=264×10 -3

[0143] (Ra=933nm, RSm=3.5μm)

[0144] · Fractal impression with primary bump + secondary bump

...

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Abstract

This plastic molded body is characterized by having a surface comprising a non-fluororesin, and in that a rough surface is formed on such surface and that fluorine atoms are incorporated in the molecular chain of the non-fluororesin that forms the rough surface. This molded body maintains excellent liquid repellency for a long period of time and exhibits drainability and liquid drop-off properties that are similar to initial values even when the molded body repeatedly comes into contact with a liquid.

Description

technical field [0001] The present invention relates to a plastic molded article having a surface including a fluorine-free resin. Background technique [0002] Since plastics are generally easy to mold compared to glass and metal, and can be easily molded into various shapes, plastics are used for various purposes. Among these purposes, the packaging field of containers such as bottles and caps mounted on containers is a typical application field of plastics. [0003] By the way, when the above-mentioned container contains a liquid, there is always a problem of dripping, so that a device is required to prevent the liquid from dripping along the outer wall surface of the container mouth when it is necessary to pour out the liquid contained in the container from the mouth of the container. . [0004] Depending on the kind of liquid that comes into contact with the surface of the container, there is also the problem of liquid adhesion. For example, in a container for contai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00B65D25/34
CPCB29K2995/0093B29C59/022B29C59/14B65D23/02B65D47/0838B65D47/40C08J7/123C08J7/126B29C2059/023B65D23/06B29K2023/0633B29L2031/7158B65D25/34C08J7/00C08J2323/28
Inventor 岩崎力青谷正毅木村谕男
Owner TOYO SEIKAN GRP HLDG LTD
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