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A self-heating body formed by compression molding and its preparation method

A compression molding and self-heating technology, which is applied in the direction of chemical instruments and methods, heating appliances for treatment, heat exchange materials, etc., can solve the problem of high production finished products, non-woven materials with strong air permeability and stability dependence, etc. problem, to achieve the effect of long heating time, miniaturization of product volume and reduction of manufacturing cost

Active Publication Date: 2021-12-07
TIANJIN FUQIN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For this reason, the embodiment of the present invention provides a compression-molded self-heating body and its preparation method to solve the problem of high finished product and high heating performance of the non-woven fabric caused by the self-heating material being wrapped with non-woven fabric in the prior art. The problem of strong dependence on the air permeability and stability of the material

Method used

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  • A self-heating body formed by compression molding and its preparation method
  • A self-heating body formed by compression molding and its preparation method

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preparation example Construction

[0037] According to the second aspect provided by the embodiments of the present invention, a method for preparing a compression molded self-heating body is provided, including the following steps:

[0038] Step 1: mixing of materials;

[0039] Step 2: molding;

[0040] Step 3: Pack and seal.

[0041] According to a specific embodiment provided by the present invention, the molding step includes the step of covering the heat-generating inner core material with the shell material, and the compression molding is primary compression molding or secondary compression molding. The application fields of the compression-molded self-heating body are different, and the gas permeability requirements of the casing 1 are different. According to the different requirements of gas permeability, the casing 1 can be molded once or twice.

Embodiment 1

[0051] The components of the heating inner core 2 consist of:

[0052] Iron powder 55%; Activated carbon powder 8%; Vermiculite 5%; Water absorbent resin 2%; Sodium chloride 4%; Water 26%;

[0053] The components of the shell 1 consist of:

[0054] Diatomaceous Earth 88%; Polyvinyl Alcohol 2%; Water 10%.

[0055] Concrete preparation process is as follows:

[0056] Step 1: Mix the materials of the heating inner core 2: mix the iron powder, activated carbon powder, vermiculite, water-absorbing resin, sodium chloride and water according to the general mixing process, and seal them in the barrel for later use.

[0057] Step 2: Mix the materials of the shell 1: add the polyvinyl alcohol into the water at 80°C under stirring, dissolve and mix evenly, add the diatomaceous earth under continuous stirring, mix evenly, and seal it in the material Reserved in the barrel.

[0058] Step 3: Molding the heating inner core 2: inject 6g-8g (the weight of the filler is adjusted according t...

Embodiment 2

[0063] The components of the heating inner core 2 consist of:

[0064] Iron powder 55%; Activated carbon powder 8%; Vermiculite 5%; Water absorbent resin 2%; Sodium chloride 4%; Water 26%;

[0065] The components of the shell 1 consist of:

[0066] Vermiculite 95%; Water 5%.

[0067] Step 1: Mix the materials of the heating inner core 2: mix the iron powder, activated carbon powder, vermiculite, water-absorbing resin, sodium chloride, and water according to the general mixing process, and seal them in the barrel for later use.

[0068] Step 2: Mix the materials of the shell 1: directly mix 20 mesh 95% vermiculite and 5% water evenly, and seal it in the barrel for later use.

[0069] Step 3: Sub-area blanking: spread 2g-4g (filler weight according to mold volume and inner core size) of the uniformly mixed shell 1 material on the bottom of the mold, and use 6g-8g (filler weight according to Mold volume adjustment) The homogeneously mixed material of the heating inner core 2 i...

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Abstract

The embodiment of the invention discloses a molded self-heating body and a preparation method thereof, belonging to the technical field of health care. The molded self-heating body provided by the invention includes an outer shell and a heating inner core, and the outer shell wraps the heating inner core , the shell is molded from inorganic mineral powder. The invention also provides a method for preparing the self-heating body by molding, which includes the steps of material mixing, molding and bag sealing, the preparation steps are reasonably designed, the preparation process is simple, and it is easy to realize. Compared with the existing technology, the present invention changes the original mixing, filling and packaging manufacturing methods and product structure, and directly coats a layer of inorganic mineral powder on the outer layer of the mixed heat-generating material, and through molding, The inorganic mineral powder molded shell is used to replace the micro-breathable composite non-woven packaging bag body, so as to achieve the improvement effect of self-heating product manufacturing cost reduction, product heating temperature self-control, and high energy density.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of health care, and in particular to a molded self-heating body and a preparation method thereof. Background technique [0002] At present, warm patch products on the market (big warm patch, foot patch, steam eye mask, shoulder and neck patch, waist and abdomen patch, etc.) Cloth packaging bags are produced in the form of cloth packaging bags. This manufacturing method is extremely dependent on the air permeability and stability of packaging materials produced by micro-breathable film manufacturers and non-woven composite manufacturers, and the cost of the packaging bags accounts for more than 50% of the total product cost. , it is urgent to develop a production method to replace the original method, and simultaneously reduce the cost ratio of the micro-ventilated inner packaging in the manufacturing process of this type of product and the dependence on micro-ventilated film manufac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/18B29C67/24A61F7/03
CPCA61F7/034A61F2007/0204A61F2007/0225A61F2007/038B29C67/243C09K5/18
Inventor 刘宇新
Owner TIANJIN FUQIN SCI & TECH
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