Glove silicone dipping is a complex process involving multiple steps and details. The following is a detailed introduction to glove silicone dipping:
1. Dipping purpose
The main purpose of glove silicone dipping is to enhance the wear resistance, puncture resistance, slip resistance, chemical corrosion resistance and other properties of gloves, so that they can better adapt to various complex working environments and protect workers' hands.
2. Dipping material
Silicone: As the main material of the dipping layer, silicone has the characteristics of high temperature resistance, oil resistance, acid and alkali resistance, chemical corrosion resistance, etc., and is very suitable for making gloves that require high protective performance.
Pretreatment liquid: Before dipping, the glove core usually needs to be pretreated. The vinyl-terminated polydimethylsiloxane, silane coupling agent, octamethylcyclotetrasiloxane and other ingredients contained in the pretreatment liquid help to form a thin film on the surface of the glove core and improve the dipping quality.
3. Dipping process steps
Glove core pretreatment: Spray the pretreatment liquid on the glove core, and then soak it in warm water to form a thin film on the surface of the glove core. This film can prevent the glue from penetrating into the glove core and improve the adhesion between the dipping layer and the glove core.
Preparation of silicone mixed rubber: Mix the raw materials such as silicone, curing agent, diluent (such as 2-methyl silicone oil) and color paste in a certain proportion to make a dipping material. The selection and proportion of the curing agent have an important influence on the performance of the dipping layer.
Dipping: Dip the pretreated glove core into the prepared silicone mixed rubber so that a layer of rubber is evenly attached to the surface of the glove core. The time and depth of dipping should be adjusted according to the specifications of the gloves and the performance of the rubber to ensure the thickness and quality of the dipping layer are uniform.
Drying and curing: Put the dipped gloves into a drying oven or other drying equipment for drying and curing. The drying temperature and time should be controlled according to the type and thickness of the rubber to ensure that the rubber can be completely cured to form a solid dipping layer.
Demolding and post-processing: When the dipping layer is completely cured, remove the gloves from the mold and perform post-processing such as trimming the edges, checking the quality, and packaging to ensure that the appearance and performance of the gloves meet the requirements.
4. Key control points of the dipping process
Rubber quality: strictly control the raw material quality, mixing ratio, viscosity, temperature and other parameters of the silicone mixed rubber to ensure the stable performance of the rubber.
Dipping time and depth: Too short dipping time or insufficient depth will lead to uneven thickness of the dipping layer, affecting the performance of the gloves; too long dipping time or too large depth will waste rubber and increase costs.
Drying temperature and time: Too high drying temperature or too long time may cause aging and cracking of the dipping layer; too low drying temperature or too short time will make the rubber unable to fully solidify, affecting the performance of the gloves.
5. Innovation and development
With the advancement of science and technology and the improvement of people's requirements for glove performance, the glove silicone dipping process is also constantly innovating and developing. For example, by improving the formula of the pretreatment liquid and the parameters of the dipping process, the adhesion between the dipping layer and the glove core and the dipping quality can be further improved. At the same time, dipping materials with special functions, such as antibacterial, antistatic, high temperature resistance, etc., can also be developed to meet the needs of gloves in different industries and fields.