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Indicating label

A labeling and indicating technology, used in film/sheet adhesives, instruments, transportation and packaging, etc. high cost and other issues

Inactive Publication Date: 2002-12-25
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, PET and Nylon have insufficient heat resistance, and polyimide is not only high in cost but also has high water absorption and water vapor permeability, which in some cases reduces the adhesiveness and adhesion of the film due to moisture penetration.
Conventional instruction labels using carrier substrates do not satisfy heat resistance and moisture resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0057] The preparation method of the propylene rubber is not particularly limited, and known methods such as those described in JP-A-59-113010, JP-A-62-64809, JP-A-160008, or WO 95 / 04764 can be used. It can be prepared by emulsion polymerization, suspension polymerization, solution polymerization or bulk polymerization in the presence of free radical initiators.

[0058] The vinyl aromatic hydrocarbon compound-conjugated diene compound block copolymer rubber having the above-mentioned functional group reactive with liquid crystal polyester includes, for example, by including (a) sequence mainly including vinyl aromatic hydrocarbon compound and (b) The sequence mainly includes the rubber obtained by epoxidizing the block copolymer of conjugated diene compound; or the rubber obtained by epoxidizing the hydrogenated product of the block copolymer.

[0059] Vinyl aromatic hydrocarbon compounds include, for example, styrene, vinyltoluene, divinylbenzene, α-methylstyrene, p-methylst...

Embodiment 1

[0142] Put 85% by weight of A-2 and 15% by weight of B-1 into the TEX-30 type twin-screw extruder manufactured by Japan Steel Works and carry out melt kneading to obtain a composition comprising continuous phase A-2 and dispersed phase B-1 material, wherein the cylindrical vessel was set at a temperature of 305° C. and a screw rotation speed of 250 rpm. The pellets of the composition exhibit optical anisotropy at a temperature and pressure of 280° C. or higher. This composition is referred to as S-1 in some cases.

[0143] Use a 60mmψ single screw extruder with a cylindrical steel mold to melt and knead S-1 at a cylindrical container set temperature of 350°C and a spiral rotation speed of 60rpm, and pass the molten resin through a nozzle with a diameter of 50mm and a distance of 1.0mm The cylindrical steel mold is extruded upward at the set temperature of the steel mold at 348°C, and the dried air is pressed into the hollow part of the obtained cylindrical film to expand the ...

Embodiment 2

[0148] Put 80% by weight of A-1 and 20% by weight of B-1 into the TEX-30 type twin-screw extruder manufactured by Steel Works, Japan and carry out melt kneading to obtain a composition comprising continuous phase A-2 and dispersed phase B-1 material, wherein the cylindrical vessel was set at a temperature of 350° C. and a screw rotation speed of 250 rpm. The composition pellets exhibit optical anisotropy at a temperature and pressure of 340° C. or higher. This composition is referred to as D-2 in some cases.

[0149] Using a 60mmψ single screw extruder with a cylindrical steel mold to melt and knead D-2 at a set temperature of 350°C and a spiral rotation speed of 60rpm, the molten resin is passed through a nozzle with a diameter of 50mm and a distance of 1.0mm. The cylindrical steel mold is extruded upward at the set temperature of the steel mold at 348°C, and the dried air is pressed into the hollow part of the obtained cylindrical film to expand the film, and then it is coo...

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Abstract

An indication label with excellent heat resistance and moisture resistance, comprising a carrier substrate, wherein the carrier substrate has a printable surface and an adhesive layer on the other surface of the printable surface, the carrier substrate is produced in a molten state A liquid crystal polymer that exhibits optical anisotropy under conditions, the label is suitable for use under high temperature and high humidity.

Description

technical field [0001] The present invention relates to an indicator label, in particular to an indicator label comprising a carrier substrate made of liquid crystal polymer. Background technique [0002] Recently, indicator labels comprising a carrier substrate having a printable surface and an adhesive or adhesive layer on the other surface of the printable surface require heat resistance and moisture resistance. For example, it is very necessary for the indicator label to have heat resistance and moisture resistance to detect the process of the flexible printed circuit board passing through the reflow oven with a temperature exceeding 250°C. The indicator label used in the high temperature and high humidity environment is suitable for water vapor treatment, and is used Boiling water treatment can be used to detect recycled product indicator labels, and construction indicator labels can be used in this application field. [0003] On the other hand, JP-A No. 2-146079 discl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F3/02C09J7/02G09F3/10
CPCC09J2203/334C09J2433/00C09J2463/00C09J2483/00C09J7/255Y10T428/31797G09F3/02
Inventor 山口登造熊田浩明
Owner SUMITOMO CHEM CO LTD
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