What is hydrogel ?

Broadly speaking, "hydrogel" is a generic term whose material properties are those that【water】 will 【condense】 into a "hygdrogel", so materials with this property can be called hydrogels.
Hydrogels Can Be Roughly Classified Into Three Types: Physical Hydrogels, Biological Hydrogels And Chemical Hydrogels.

Physical hydrogel

Natural materials blended in salt ions

Grass jelly



Biological hydrogel

Extracting natural materials from living organisms


jelley fig



Chemically remanufactured from chemical materials

Hot & cold pad

electrode pad

gel dolls

Storage of water and raw materials

The structural composition of hydrogels is ever-changing, and biological, chemical, physical and other methods have the opportunity to form hydrogels, but physical and biological hydrogels are weaker and less stable, while in chemical hydrogels The gel structure is much stronger, more stable and easy to store, so it is widely used. It is used in medical advice, health care, beauty, food, agriculture, etc.

In the LOGO of Home Tech Hydrogel World, the four colored balls in the LOGO are designed by the 3D three-dimensional net structure which can store a large amount of water and raw materials when the 【hydrogel】 is formed.

hydrogel characteristic

  1. Environmentally friendly materials
    After being discarded, hydrogel can be quickly decomposed by organisms without causing waste.
  2. Water swelling 1 to 1000 times
    The special structure of hydrogel has the function of absorbing a high volume of water, meaning that the volume of hydrogel will become larger after it has absorbed water, and the volume will become smaller after dehydration.
    Home tech hydrogel aromatic dolls use this characteristic of hydrogel, to manufacture a variety of sizes of dolls!
  3. Thermal conductivity and electrical conductivity
    hydrogel has good thermal conductivity and electrical conductivity, and is the perfect partner for enthalpy and electric enthalpy.
  4. High temperature and low temperature
    The hydrogel contained in Home Tech Hydrogel Aromatic Doll does not soften at high temperatures, does not burn, and does not freeze at low temperatures.

Hydrogel evolution


Gel refers to a condensed, viscous gelatinous substance. The history of gel is very long. It was mainly used as a coating and adhesive in the early days, and it was modified by natural materials.

Egyptians, Romans, and Chinese use a lot of natural materials such as gum arabic, resin, egg, glutinous rice, starch, soybean, animal glue or vegetable gum for public consumption or everyday use.


The structure of Hydrogel exhibits a network-like three-dimensional structure and is relatively stable. When water is absorbed, the carbon molecular structure has a large structure spacing and a large appearance. When dehydrated, the carbon molecular structure spacing becomes smaller, and the volume there of also becomes smaller.

Early gel products were used for dehydrating applications such as coatings and adhesives. The application of hydrogel products containing a large amount of water has recently been developed.


Scientists discovered electrophoresis and have since continued to improve electrophoresis support.


Scientists such as Davis used polypropylene guanamine gel as an electrophoresis support.

1970 ~ 80

Hydrogel products are used in large quantities for medical and biotech applications.

Most hydrogel products have good biocompatibility with skin contact. Home Tech and other industries in Taiwan have also invested in R&D and production.

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