Dip mould machine working process for making pvc caps sleeves covers,made of pvc plastisol

Описание: Here is the working process of a dip mould machine for making PVC caps, sleeves, and covers from PVC plastisol:

0:10 Preheat Mold
0:35 Dip Plastisol
0:59 Heat for Curing
1:09 Water Cooling
1:20 Demould
1:35 Dip Release Agent
1:54 Next Cycle

1.Mould Preparation

The moulds, which are designed in the shape of the desired caps, sleeves, or covers, are cleaned and pre - heated to a specific temperature, usually between 350-400°C. This pre - heating is crucial as it helps the PVC plastisol to adhere properly and cure evenly.

2.Dip Coating

The pre - heated moulds are then immersed into a tank containing the PVC plastisol. The viscosity of the plastisol is carefully controlled to ensure proper coating. When the mould is dipped, the plastisol adheres to the surface of the mould. The dipping time is adjusted according to the thickness of the product required, typically ranging from a few seconds to a minute.

3.Gelation and Curing

After dipping, the moulds are removed from the plastisol tank and placed in an oven or a heating chamber. Here, the PVC plastisol undergoes gelation and curing. The temperature and time in the oven are precisely controlled. Generally, the curing temperature is around 180 - 220°C, and the curing time can be from 1 - 10 minutes, depending on the product thickness and the type of plastisol used.

4.Cooling and Demoulding

Once the curing is complete, the moulds are cooled, either by natural air cooling or by using a cooling system. After cooling, the PVC caps, sleeves, or covers are demoulded. The demoulding process may involve the use of mechanical devices or manual techniques to carefully remove the finished products from the moulds without damaging them.

5.Quality Inspection and Finishing

Machine and material supplier : pecoat.com

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