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A monitoring system based on etching of metals

A technology of metal and metal layer, applied in the direction of measuring device, test time/temperature history, thermometer giving average value/integral value, etc., can solve problems such as influence

Active Publication Date: 2011-05-25
JP LAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, the sensitivity of the ink decreases over time, especially in the presence of moisture, so that the initial and final
[0059] In most cases, consumers want to know whether a product is good, bad, acceptable, unacceptable, effective, ineffective, etc.
Some people don't know or can't fully understand good and bad

Method used

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  • A monitoring system based on etching of metals
  • A monitoring system based on etching of metals
  • A monitoring system based on etching of metals

Examples

Experimental program
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Effect test

Embodiment

[0471] The present invention relates to a pointing system that can be used in various pointing devices.

[0472] The indicator system of the present invention consists of a metal indicator layer and an activator layer, wherein the metal layer is a metal, a metal alloy, a semi-metal material or a semiconductor material. Said activator is an agent capable of irreversibly altering the layer of the indicator by etching or destroying it or altering the properties of the layer,

[0473] The indicator layer of the present invention comprises a metal that is or can be made conductive, reflective, highly opaque, self-adhesive and / or impermeable, it can be made non-visible, transparent, Translucent, non-conductive, or otherwise destroyed by contact with the activator.

[0474] Preferred indicator materials of the present invention include a metal such as an alkali metal, alkaline earth metal, transition metal, late transition metal, lanthanide and actinide metal or alloys thereof, or m...

example 1

[1148] Example 1: Existing Technology

[1149] Two-tape TTI device from Avery Dennison, Pasadena, CA, by applying an activator tape (containing PSA acid on a clear plastic film) to an indicator tape (containing resin pH stain on a white plastic film) to activate. Activated devices typically change from yellow -> light purple -> purple -> dark purple within one day at room temperature and one hour at 50 °C. The evolution / change of color is rapid at the beginning and slow at the end. Since the diffusion of the device is based there is no sudden color change.

example 2

[1150] Example 2: Effect of phosphoric acid and its concentration.

[1151] A piece of 100 micron metallized polyester film (with an aluminum layer of 125 angstrom thickness) was used to demonstrate the feasibility of the concept.

[1152] Write the letter "A" on the metal layer of the metallized film and write "1" behind the film placed on a piece of red paper, then pour 1 mL of 85% phosphoric acid over the "A". After about 4 minutes a small amount of gas bubbles (hydrogen gas) appeared on the aluminum layer. The red paper and "1" are invisible for 5 minutes. The aluminum layer was completely dissolved and the red paper became fully visible after 6 min. Therefore, the device has a very long induction period (about 80% of the system) for color change (silver to red), ie, 5 minutes is no red and red appears in about a minute. There are example 33 and Figure 44 As shown in , the time required to completely dissolve the metal layer increased from 6 minutes with 85% phosphori...

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Abstract

Compositions, devices and processes related to etching of a very thin layer or fine particles of a metal are disclosed for monitoring a variety of parameters, such as time, temperature, time-temperature, thawing, freezing, microwave, humidity, ionizing radiation, sterilization and chemicals. These devices have capabilities of producing a long and sharp induction pepod of an irreversible visual change The devices are composed of an indicator comppsing a very thin layer of a metal (e g, polyester film having an extremely thin, e g, about one hundred Angstroms layer of aluminum) and an activator, e g, a reactant, such as water, water vapor, an acid, a base, oxidizing agent or their precursors, which is capable of reacting with the said indicator. The indicator retains its opacity and metallic luster, e g, silvery white, mirror like finish of aluminum layer for a long time. The activator destroys the indicator layer including the naturally formed oxide layer.

Description

【Technical field】 [0001] The present invention relates to a metal thin layer or particle etching based system and method for monitoring time, time-temperature, humidity, thawing, radiation, chemical and biological agents and disinfection. The invention also relates to the formation of patterns, printing plates, electronic circuits and RFID devices. 【Background technique】 [0002] Introduction to existing technology [0003] A measure of the shelf life of a perishable product, usually expressed in terms of the remaining time beyond a regulatory limit for end use. The term "perishables" or "perishable products" here includes items such as fresh, refrigerated, frozen, vegetables, fruits, meat, fish, poultry, dairy products, pastries, fruit juices, pre-cooked foods, soft drinks and alcoholic beverages, etc. Perishable products, also non-food categories with measurable shelf life with shelf life ranging from a few hours to years Including pharmaceuticals, vaccines, serum, bloo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/00
CPCG01D3/10G01K3/04G01N31/229G01N31/224
Inventor G·帕特尔
Owner JP LAB INC
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