Patent Application
20110104971
1. Field of Invention
The invention relates to fibrous article manufacturing processes and more particularly to a fibrous article with fabric-like surface and process of manufacturing same with improved characteristics including simplified process, reduced weight, increased structural strength, and being aesthetic.
2. Description of Related Art
Plastic products are widely used in our daily life. Moreover, a plastic article having a visually attractive surface is always desired. Therefore, techniques of manufacturing a plastic article having an aesthetic surface have been developed.
A conventional process of manufacturing a plastic fibrous article having a smooth surface comprises coating an appropriate material on a half-finished article.
The above and other known techniques suffer from several disadvantages. For example, they are complicated and expensive. Thus, the need for improvement still exists.
It is therefore one object of the invention to provide a process of manufacturing a fibrous article having a fabric-like surface.
It is another object of the invention to provide a fibrous article having a fabric-like surface.
The above and other objects, features and advantages of the invention will become apparent from the following detailed description taken with the accompanying drawings.
Referring to
In step S10, a first thermoplastic resin layer 11 is formed on a bottom surface of fabric substrate 10 by submerging the fabric substrate 10 in a bath of first thermoplastic resin. Alternatively, the first thermoplastic resin layer 11 is formed by coating a first thermoplastic resin on the bottom surface of the fabric substrate 10 in other embodiments. Material of the fabric substrate 10 is selected from the group consisting of fabric, cloth, bamboo, wood, natural leather, and artificial leather. Material of the first thermoplastic resin layer 11 is selected from the group consisting of ABS (acrylonitrile butadiene styrene), PS (polystyrene), PC (polycarbonate), PE (polyethylene), AS (acrylonitrile styrene), PMMA (polymethyl methacrylate), PET (polyethylene terephthalate), PA (polyamide), PBT (polybothlene terephalate), PEEK (polyether ether ketone), and PEI (polyetherimide).
In step S15, the fabric substrate 10 and the first thermoplastic resin layer 11 are baked at a temperature of between about 60° C. and 80° C. until the first thermoplastic resin layer 11 becomes gel.
In step S20, a continuous fiber substrate 20 is conveyed by rollers to pass through a bath of second thermoplastic resin. The second thermoplastic resin permeates the continuous fiber substrate 20 and forms a second thermoplastic resin layer 21 on each of top and bottom surfaces of the continuous fiber substrate 20. Material of the continuous fiber substrate 20 is selected from the group consisting of carbon fiber, glass fiber, synthetic fiber, natural fiber, and asbestos. Material of the second thermoplastic resin layer 21 is selected from the group consisting of ABS, PS, PC, PE, AS, PMMA, PET, PA, PBT, PEEK, and PEI.
In step S25, the continuous fiber substrate 20 and the second thermoplastic resin layers 21 are baked at a temperature of between about 60° C. and 80° C. until the second thermoplastic resin layer 21 becomes gel.
Note that the steps S20 and S25 can be performed at the same time as the steps S10 and S15.
In step S30, the formed fabric substrate 10 and the first thermoplastic resin layer 11 are placed on the formed continuous fiber substrate 20 and the second thermoplastic resin layers 21.
In step S40, a hydraulic press machine is employed to press the fabric substrate 10 at a temperature of between about 25° C. and 150° C. until about 20% to 70% of the first thermoplastic resin in the first thermoplastic resin layer 11 permeates the fabric substrate 10 and about 20% to 70% of the second thermoplastic resin in the second thermoplastic resin layers 21 permeates the continuous fiber substrate 20 respectively. At the same time, the first thermoplastic resin layer 11 and the second thermoplastic resin layer 21 are further gelatinized. A continuous plate is produced (see
In step S50, the continuous plate is cut into a plurality of units of predetermined size.
In step S60, a mold is heated to a temperature of between about 120° C. and 180° C. and the units are heated to a temperature of between about 180° C. and 230° C. respectively. Thereafter, the units are pressed into the mold and cooled to a temperature of between about 50° C. and 70° C. As a result, an open container shaped half-finished article 50 having a cut is produced (as shown in
In step S70, burrs and sharp edges of the half-finished article 50 are eliminated, for example, by means of CNC (computer numerical control).
In step S80, a second mold is employed to cooperate with the mold and both molds are subject to injection molding by employing a third thermoplastic resin. Material of the third thermoplastic resin is selected from the group consisting of ABS, PS, PC, PE, AS, PMMA, PET, PA, PBT, PEEK, and PEI. Alternatively, the material of the third thermoplastic resin is selected from the group consisting of ABS, PS, PC, PE, AS, PMMA, PET, PA, PBT, PEEK, PEI, and an alloy resin formed by adding an additive (e.g., at least one of talc, carbon fiber, and glass fiber) to any of ABS, PS, PC, PE, AS, PMMA, PET, PA, PBT, PEEK, and PEI. As a result, a third thermoplastic resin layer 30 is formed on an inner surface of the four sides of a finished article 60.
The finished article 60 of the invention has the characteristics of increased structural strength and a surface similar to that of a fabric. Moreover, the finished article 60 has the advantage of being aesthetic so that it can be used as container, cover, or the like. In addition, the invention can be mass produced easily.
While the invention herein disclosed has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.
