The existence of flash has brought many adverse effects on the production process and quality of rubber products.

1) Flash is generally not allowed in product design, and it must be trimmed from the perspective of quality requirements. Trimming burrs requires a lot of manpower and space, which adds a process invisibly and prolongs the production cycle. From the management point of view, the trimming of burrs increases the production cost.

2) The formation of burrs increases the consumption and production cost of rubber compound. At the same time, it is also a waste of resources and a potential pollution to the environment.

3) The formation of flash changed the sealing dimension of molded products and affected some properties of products (especially products with strict sealing requirements).

4) The trimming of raw edges, especially manual trimming, obviously seriously affects the appearance quality of products, thus reducing the commercial value of products. As the saying goes, "goods sell a piece of leather", which is the truth. The trimmed flash has different traces and residues, which directly affects the image of the enterprise in the eyes of customers and makes the enterprise lose its market competitiveness.

The negative effects of flash mentioned above should be understood from the perspectives of product quality, corporate image, social benefits and strategic requirements of enterprise development, whether it is a technical worker or a production organizer or operator. Therefore. We must put forward such a resounding slogan: "improve technology, improve technology, and move toward less flashing and no flashing."