Feature Highlights of Easy Operation Cap Lining Machine

Form shrinkage of Easy Operation Cap Lining Machine Forming shrinkage is mainly manifested in the following aspects:

(1) The shrinkage of the line size of the plastic part is due to thermal expansion and contraction, elastic recovery and plastic deformation when the plastic part is demolded, which causes the size of the plastic part to shrink after it is demoulded and cooled to room temperature. Therefore, it must be considered when designing the cavity. compensate.

(2) Easy Operation Cap Lining Machine Shrinkage Directionality When forming, the molecules are arranged according to the direction, so that the plastic parts are anisotropic, and the shrinkage is large and the strength is high along the material flow direction (that is, the parallel direction), and the direction perpendicular to the material flow (that is, perpendicular direction), the shrinkage is small and the strength is low. In addition, due to the uneven distribution of density and fillers in various parts of the plastic part during molding, the shrinkage is also uneven. The difference in shrinkage makes plastic parts prone to warping, deformation, and cracks, especially in extrusion and injection molding, where the directionality is more obvious.

(3) The processing characteristics of Easy Operation Cap Lining Machine have shrinkage rate. After the plastic part is taken out of the mold and cooled to room temperature, the size shrinkage occurs. This property is called shrinkage. Since shrinkage is not only thermal expansion and contraction of the resin itself, but also related to various forming factors, the shrinkage of plastic parts after forming should be called forming shrinkage. When post-shrinkage plastic parts are formed, due to the influence of forming pressure, shear stress, anisotropy, uneven density, uneven distribution of fillers, uneven mold temperature, uneven hardening, plastic deformation and other factors, a series of stresses are caused. The effect cannot be completely disappeared in the viscous flow state, so there is residual stress when the plastic part is formed under the stress state.