Coil and its preparation method

Abstract

The invention discloses a coiled material, and further provides a preparation method of the coiled material. The coiled material comprises a cylinder core and a material strip winding on the cylindercore in a multi-layer mode. The material strip comprises a bearing film in a long strip shape and a plurality of load objects which are arranged on the bearing film at intervals. In any two adjacent layers of the material strip winding on the cylinder core, the load objects on the bearing film are arranged correspondingly in the diameter direction of the cylinder core in an overlapped mode. The spacing between the load objects on the bearing film is designed to enable each load object (such as optical glue) is directly borne on at least one of the load objects in the adjacent layer of the bearing film which is relatively closer to the cylinder core (the outer layer) to avoid the extrusion deformation caused by the optical glue being staggered with the optical glue of an inner layer withoutcorresponding bearing capacity.

Description

technical field [0001] The invention relates to a coiled material and a preparation method thereof, which can effectively prevent the coiled material in the inner layer of the coiled material from being squeezed. Background technique [0002] Due to industrial automation and the demand for efficiency, the existing optical adhesive and film materials are gradually beginning to use the roll material method instead of the sheet material method to achieve high-efficiency machine automatic attachment. However, the roll material method requires a large number of tapes to be carried on each roll. After the film tape is rewound, the inner tape will be squeezed by the outer tape, and the inner layer will receive greater pressure. When the pressure reaches a certain level, The tape is likely to be damaged. [0003] The optical glue of an existing optical film roll material needs to be attached to the glass. Since the performance of the optical glue is relatively sensitive, it is not ...

AI Technical Summary

Problems solved by technology

[0003] The optical glue of an existing optical film roll needs to be attached to the glass. Since the performance of the optical glue is relatively sensitive, it is not allowed to have structural or appearance defects such as damage, wrinkles, and local deformation.

If the optical glue 33 is arranged on the carrier film 31 material strip at equal intervals d (such as Figure 1A As shown), due to the continuous winding of each layer of carrier film 31, the winding diameter continues to increase, and the optical glue 33 will be dislocated on the carrier film 31 (such as Figure 1B shown), which in turn causes the optical glue 33 to be partially deformed (such as Figure 1C shown)

Images