2results about How to "Stable flatness" patented technology

The last decades has seen enormous advance in the market for flooring for floor covering. It is known to install floor panels on a underlying floor in various ways. The present invention relates to an improved panel, such as a floor panel, in particular a decorative floor panel. The invention also relates to a covering, in particular a floor covering, comprising multiple interconnected panels according to the invention.

The present application relates to the technical fields of dry electrode film preparation, and discloses a dry electrode film roll pressing composite equipment, which comprises a pre-composite non-powered unwinding assembly, a hot pressing roller assembly with a hot pressing passing gap and two separator film unwinding assemblies; the pre-composite non-powered unwinding assembly comprises a current collector unwinding shaft, a pre-composite passing roller and two dry film unwinding shafts arranged in sequence along a second direction, a dry film passing gap is formed between the two dry film unwinding shafts, a tangent line of the outer diameter of the pre-composite passing roller and a midpoint of the dry film passing gap along the second direction are sequentially arranged along a first direction and projectively coincide, and the two separator film unwinding assemblies are sequentially arranged along the second direction. The dry electrode film roll pressing composite equipment avoids the dry film attached to the current collector due to the air flow disturbance or tension fluctuation of the protective separator film, at the same time, avoids the wrinkle of the separator film, effectively reduces the defect rate, and improves the roll pressing composite quality and the stability of the roll pressing composite operation.