Abstract: A method for processing a film. The method impressing the whole surface or a selected surface of the film to form protuberant structures on the film by using a transfer and an impresser which has grain projections formed thereon, wherein the protuberant structures have a protuberant shape with an opening hole on the tip or without an opening hole on the tip.

Abstract: A process for manufacturing easily portable and multi-layered adhesive tape roll is described. The flat piece of easily portable and multi-layered adhesive tape is formed by compressing the adhesive tape roll having circular shape or other shapes. The adhesive tape roll is compressed and cohered during the compressing step. A stiff interfacial layer, for example, having adhesion by adhering two innermost adhesive surfaces, by providing a stronger adhesion material, by inserting a stiff and solid material, or a stiff and solid material coated with a strong adhesion material, is applied to the symmetry plane of the adhesive tape during the compressing step. The preferential material of the high adhesion material is a cyanoacrylate adhesive or an epoxy adhesive.

Abstract: A process for manufacturing a flat adhesive tape comprises: providing a stiff interfacial sheet having a flat and solid form; surrounding the stiff interfacial sheet with a plurality of adhesive layers so as to form a roll of the adhesive layers with the stiff interfacial sheet positioned on a symmetric plane of the roll; and compressing the roll to form the flat adhesive tape. The stiff interfacial sheet can have a length slightly longer than a half-length of an innermost circumference of the roll of the adhesive layers. A layer of high adhesion material containing uncured high cross-linking epoxy or uncured high cross-linking cyanoacrylate can be provided between the stiff interfacial sheet and the adhesive layers. After compressing the roll of the adhesive layers, the high adhesion material is cured to form the flat adhesive tape.