The invention relates to a method of fabricating acetate eyeglass frame fronts with a frame curvature and consequent lens seats, which is customized to conform with the curvature of the lenses to be fitted into said seats which, according to the visual defect to be corrected, may have different, possibly asymmetric, curvatures.

The invention also relates to the frames with curved fronts obtained with the method.

Fabrication is carried out by electronically controlled milling operations from an acetate plate (1), having predetermined thickness (S), length (L) and height (H) values, on which additional elements (2, 3, 4, 5) made of the same material, possibly of different colors, are applied, which are attached at least proximate to the end sides of the length extent (L) of the plate at the lens seats. Such additional elements help to locally increase the thickness (S) of the plate to a value (S1) that accommodates the dimensions that the frame shall have as a result of the curvature of the front at the lens seats, relative to the middle region, once the milling operations have been completed.

The additional elements (2, 3, 4, and 5) are pre-cut and then stably fixed to the plate (1) by direct friction welding on the plate, without using chemicals or adhesives.

The invention relates to a method of fabricating acetate eyeglass frame fronts with a frame curvature and consequent lens seats, which is customized to conform with the curvature of the lenses to be fitted into said seats which, according to the visual defect to be corrected, may have different, possibly asymmetric, curvatures.

The invention also relates to the frames with curved fronts obtained with the method.

Fabrication is carried out by electronically controlled milling operations from an acetate plate (1), having predetermined thickness (S), length (L) and height (H) values, on which additional elements (2, 3, 4, 5) made of the same material, possibly of different colors, are applied, which are attached at least proximate to the end sides of the length extent (L) of the plate at the lens seats. Such additional elements help to locally increase the thickness (S) of the plate to a value (S1) that accommodates the dimensions that the frame shall have as a result of the curvature of the front at the lens seats, relative to the middle region, once the milling operations have been completed.

The additional elements (2, 3, 4, and 5) are pre-cut and then stably fixed to the plate (1) by direct friction welding on the plate, without using chemicals or adhesives.

A resin composition contains cellulose acylate (A), a polyester resin (B), at least one compound (C) selected from the group consisting of cardanol compounds and ester compounds having a molecular weight of about 250 or more and about 2000 less, and a water-absorbing compound (D).

Provided is a resin composition containing: a cellulose acetate in which the weight average polymerization degree is 120-330 and the degree of substitution of an acetyl group is 2.10-2.60; a (meth)acrylic polymer having a weight average molecular weight of 1000-30000; and a plasticizer.

Disclosed are a lyocell material for a cigarette filter and a method of preparing the same, wherein a crimped tow is manufactured using a lyocell multifilament including low-strength lyocell monofilaments, and thus the ultimately prepared lyocell material for a cigarette filter can exhibit low strength, thereby increasing processing efficiency during the manufacture of the cigarette filter.

A method for fabricating a multi-color cellulose acetate spectacle frame, which includes: baking a multi-color cellulose acetate sheet so that it is soften; pressing so as to enable the second, third, and fourth color layers of the multi-color cellulose acetate sheet to move a distance greater than the thickness of a surface color layer of the multi-color cellulose acetate sheet; grinding off or shaving off a surface layer of the excessively moved portion so that the color of a middle layer is highlighted; baking the multi-color cellulose acetate sheet again so that it is soften; pressing so that the color of the middle layer is highlighted to the surface of the spectacle frame. According to the method for fabricating the multi-color cellulose acetate spectacle frame, the working processes are saved, and the qualification rate of product is improved.

A system includes a film processing module, a processor, and memory. The processor and memory are in communication with the film processing module. The processor is configured to dynamically coordinate movement of the film processing module relative to a moving web of film and to perform a function on the web of film with the film processing module.

A system includes a film processing module, a processor, and memory. The processor and memory are in communication with the film processing module. The processor is configured to dynamically coordinate movement of the film processing module relative to a moving web of film and to perform a function on the web of film with the film processing module.

Various embodiments relate to plastic-metal junctions and methods of making the same via laser-assisted joining. The present invention provides a method of forming a junction between a metal form and a solid plastic. The method can include laser treating a surface of a metal form to generate a feature (e.g., a plurality of at least one of pores and grooves) in the surface of the metal, wherein the laser has an angle of incidence with the surface of the metal of other than 0 degrees. The method can include contacting the metal surface including the feature with a flowable resin composition. The method can include curing the flowable resin composition to form the solid plastic, to provide the junction between the metal form and the solid plastic.

Various embodiments relate to plastic-metal junctions and methods of making the same via laser-assisted joining. The present invention provides a method of forming a junction between a metal form and a solid plastic. The method can include laser treating a surface of a metal form to generate a feature (e.g., a plurality of at least one of pores and grooves) in the surface of the metal, wherein the laser has an angle of incidence with the surface of the metal of other than 0 degrees. The method can include contacting the metal surface including the feature with a flowable resin composition. The method can include curing the flowable resin composition to form the solid plastic, to provide the junction between the metal form and the solid plastic.