Thermosensitive time indicating device

A time-indicating and heat-sensitive technology, which is applied in the direction of measuring devices, measuring heat, instruments, etc., can solve the problems that the seal cannot be too small to operate, the structure of the heat-sensitive time indicating device is complex, and it is unfavorable for the miniaturization of the heat-sensitive time indicating device

Inactive Publication Date: 2017-05-31
SHENZHEN NINE STARS PRINTING & PACKAGING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, a through hole is provided in the protective layer, and a peelable seal is provided, and it is necessary to ensure that the seal can completely seal the through hole, resulting in a relatively complicated structure

Method used

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Experimental program
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Embodiment 1

[0061] The structure of the thermal time indicating device of embodiment 1 is as follows figure 1 As shown, the base layer 110, the first substrate layer 120, the volatile function layer 130, the adsorption indicating layer 140, the second substrate layer 150, the comparison layer 160, the protective layer 170, the adhesive layer 180 and the release layer 185.

[0062] The material of the base layer 110 is PET, and the thickness is 0.18 mm. The material of the first substrate layer 120 is LDPE, and the thickness is 0.18 mm.

[0063] The volatile functional layer 130 is a phase change material. The phase change material is 2g of paraoleic acid.

[0064] The adsorption indicating layer 140 includes an adsorbent and an indicating composition adsorbed on the adsorbent. The material of the adsorbent is a polytetrafluoroethylene microporous membrane with a thickness of 0.15 mm, and the average pore diameter of the micropores of the adsorbent is 10 nm. The indicating composition includes ...

Embodiment 2

[0071] The structure of the thermal time indicating device of embodiment 2 is as follows figure 2 As shown, the base layer 210, the first substrate layer 220, the volatile function layer 230, the through holes 224, the liquid barrier layer 290, the adsorption indicating layer 240, the second substrate layer 250, the comparison layer 260, the protective layer 270, the glue Adhesive layer 280 and peeling layer 285.

[0072] The material of the base layer 210 is PET, and the thickness is 0.18 mm. The material of the first substrate layer 220 is LDPE, and the thickness is 0.18 mm.

[0073] The volatile functional layer 230 is a phase change material. The material of the adsorbent is 80g writing paper, and the phase change material is 10g elaidic acid.

[0074] The through hole 224 is provided at the center of the first substrate layer 220 and has a diameter of 0.5 mm.

[0075] The material of the liquid barrier layer 290 is a microporous polytetrafluoroethylene film with a thickness of...

Embodiment 3

[0083] The structure of the thermal time indicating device of embodiment 3 is as follows image 3 As shown, the base layer 310, the first substrate layer 320, the volatile functional layer 330, the through holes 324, the adsorption indicating layer 340, the second substrate layer 350, the comparison layer 360, the protective layer 370, the adhesive layer 380 and the peeling Layer 385.

[0084] Wherein, the material of the base layer 310 is PET, and the thickness is 0.18 mm. The material of the first substrate layer 320 is LDPE, and the thickness is 0.18 mm.

[0085] The volatile functional layer 330 includes an adsorbent and a phase change material adsorbed on the adsorbent. The material of the adsorbent is 80g writing paper, the thickness is 0.2mm, and the average pore diameter of the adsorbent is 1μm. The phase change material is 5 g of pelargonic acid.

[0086] The adsorption indicating layer 340 includes an adsorbent and an indicating composition adsorbed on the adsorbent. T...

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Abstract

The invention relates to a thermosensitive time indicating device. The thermosensitive time indicating device comprises a base layer, a first substrate layer which forms an accommodation body with the base layer, a volatile functional layer which is accommodated in the accommodation body and comprises a phase change material selected from at least one of oleic acid, elaidic acid, n-nonanoic acid, octanoic acid, glyceryl triacetate and lauric acid, an adsorption indicating layer which is formed on the surface of the first substrate layer and contains an indicator composition, and a second substrate layer which is formed on the surface of the adsorption indicating layer and has the advantages of transparency and airtightness. The indicator composition comprises at least one of a pH sensitive dye. The pH sensitive dye is selected from at least one of m-cresol violet, anthocyanins, thymolphidin, o-cresolphthalein, bromothymol blue, cresol red, cetyltrimethylammonium cation, neutral red, phenol red, rhodamine, sulfo rhodamine 101 and thymol blue. The thermosensitive time indicating device is simple in structure, and is advantageous for miniaturization.

Description

Technical field [0001] The invention relates to a heat-sensitive time indicating device. Background technique [0002] Food, beverages, blood, vaccines, meat and other perishable products need to be stored in a specific temperature environment. If the storage environment temperature exceeds the specified temperature, the items to be inspected will quickly deteriorate. Consumers use the above deteriorating items to be inspected. , Will cause damage to the human body, and even cause death in severe cases. Therefore, it is necessary to provide an indicating device that can continuously change color sensitive to temperature, so as to determine the accumulated heat of the product to be inspected by the degree of color change, and thereby determine whether the stored article to be inspected has failed. [0003] The existing heat-sensitive time indicating device includes a base layer, an indicator layer and a protective layer formed on the surface of the base layer. The indicator layer i...

Claims

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Application Information

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IPC IPC(8): G01K11/02G01K11/12
CPCG01K11/02G01K11/12
Inventor 刘永生郭欣刘文恒覃玲
Owner SHENZHEN NINE STARS PRINTING & PACKAGING GRP
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