Abstract: The invention discloses a 5-layer co-extruded biaxial-oriented polypropylene synthetic paper which is a 5-layer laminated structure with thickness between 30–300 ?m comprising the uppermost layer (A) of paper sheet or resin, the second layer (B) of paper sheet or resin, the intermediate foamed layer (C), the forth layer (D) of paper sheet or resin and the bottom layer (E) of paper sheet or resin which is to improve the rigidity and stiffness covering power, strength between layers, glossiness of paper surface, paper thickness and the printability of the conventional synthetic paper.

Abstract: A process for fabricating biaxially oriented polypropylene to modify the properties of polypropylene through treatment of flame is disclosed. The surface tension and the planarity of the polypropylene films is improved after adjusting the composition of the polypropylene and treating the polypropylene films with flame. The polypropylene products through the treatment process have good lamination strength for water-based inks and good adherence with aluminum foils. The requirements of the process for fabricating the polypropylene is illustrated following: 1. The surface for future printing and electroplating is heated by flame. 2. The flame comes from the combustion of a liquid natural gas which contains more than 85% of methane. 3. The flame has following properties: (1) polrization voltage: 0.1-0.8 KV, optimal voltage: 0.2 KV. (2) The temperature of cooling cylinders : 20-50° C., optimal temperature 25° C. (3) The temperature of flame : 700-900° C., optimal temperature 760° C.

Abstract: This invention relates to a 3-layer co-extruded biaxial-oriented pearly synthetic paper label used for integrally molding with bottle in mold; more particularly, it relates to a manufacturing equipment and method of said 3-layer co-extruded biaxial-oriented pearly synthetic paper label.

Abstract: Recently, in terms of improving the yield and production rate of a biaxial-oriented polypropylene pearly synthetic paper, since the inorganic powder itself has an unsteady dispersion property while blended with polypropylene and while the extruder raises its production rate, which causes a shorter period of replacing the filter screen of the extruder; consequently, frequently replacing the filter screen deteriorates the efficiency of production, further obstructs the goal of increasing the yield from being achieved.

Abstract: Disclosed is a process for producing a three layers co-extrusion biaxially oriented polypropylene (hereinafter as BOPP) synthetic paper and transparent film for in-mold label. More particularly, the invention relates to a process for producing a three layers biaxially oriented PP synthetic paper by means of three layers co-extrusion wherein three different PP resin compositions are separately extruded by one primary and two secondary extruders first, and then are co-flowed by a same T-die to form a three layers coating sheet.

Abstract: Disclosed is an improvement of a process for producing a three layers co-extrusion biaxially polypropylene(BOPP) synthetic paper of thickness 25˜250 &mgr;m which is menufactured by using three single screw extruders By means of an improvement of a process for producing a three layers co-extrusion biaxially polypropylene(hereinafter as BOPP) synthetic paper of thickness 25˜250 &mgr;m. More particularly, the invention relates to a process for producing a three layers BOPP synthetic paper by means of three layers co-extrusion wherein two different PP resin compositions are separately extruded by one primary single screw extruder with venting device and two secondary single screw extruders with venting device first, and then are co-flowed by a same T-die to form a three layers coating sheet, and through cooling, biaxial orientation, corona treatment and winding to form a three layers co-extrusion synthetic paper of thickness 25˜250 &mgr;m.

Abstract: Disclosed is a process for producing a 3-layer co-extruded biaxially polypropylene (hereinafter as BOPP) synthetic paper of thickness 25-250 &mgr;m. More particularly, the invention relates to a process for producing a 3-layer biaxially-oriented PP synthetic paper by means of 3-layer co-extrusion wherein two different PP resin compositions are separately extruded by one primary and two secondary extruders first, and then are co-flowed by a same T-die to form a three layers coating sheet, and through cooling, biaxial orientation, corona treatment and winding to form a 3-layer co-extrusion synthetic paper of thickness 25-250 &mgr;m.

Abstract: This invention relates to a process for producing an invisible and writable biaxially oriented polypropylene (BOPP) raw processing film of thickness between 20 to 60 &mgr;m. More particularly, this invention relates to a process for producing a three-layers biaxially oriented PP synthetic raw processing film by means of three-layers co-extrusion, wherein two different PP resin compositions are separately extruded by one primary and two secondary extruders first, and then are co-flowed by a same T-die through cooling molding to form a three layers coating sheet, and through biaxial orientation, corona treatment and winding to form three layers co-extrusion synthetic film of thickness 20-60 &mgr;m. The three layers structure of said three layers co-extrusion synthetic film can be made in the form of invisible and writable layer/intermediate resin layer/backing adhesive resin layer, which can be used in industrial application and stationery application after winding finishing.

Abstract: A construction for the packaging of plastic separators having top, middle and bottom plates formed of single plastic moldings. Each of the plates have support plugs for positioning one or more yarn spools sandwiched between the top plate and the middle plate, the top plate and the bottom plate, or the middle plate and the bottom plate. Wrapping film (22) covers the yarn spools sandwiched between the plates. The top and bottom plates each include deep grooves (13, 20) with widths larger than that of the packaging rope. The packaging rope is arranged along the grooves tor secure the yarn spools between the plates. The bottom plate includes at least four corners with upper rims (23) and bottom rims (24). The upper rims (23) are more projected than the bottom rims (24). The rims are configured as fixing parts for the wrapping film (22) that extends from the top plate to the bottom plate.

Abstract: A compressible separator system for packaging yarn spools, having a top plate with face-down support plugs, a bottom plate having face-up support plugs and at least one middle plate having face-up and face-down support plugs. The plates made of single molding construction by plastic forming and the support plugs adapted to secure corresponding yarn spools. The support plugs including plug caps (84, 85) having respective the 1st and 3rd, or the 2nd and 4th are corner-wise symmetric such that in the absence of any other items such as the yarn spools or the tube cores between the plates, the plug caps between the top plate and the middle plate, between at least two said middle plates, between the middle plate and the bottom plate, or between the top plate and the bottom plate may be inserted into corresponding open quadrants of one another to form a rigidly stacked structure. The plug caps may be of different sizes.

Abstract: This invention disclose a process for producing a multi-layer biaxially oriented polypropylene synthetic paper of improved gloss and easy-drying printability by means of 3-layer co-extrusion wherein two different PP resin composites are separately extruded by one primary and two secondary extruders and then co-flowed by a same T-die to form a paper sheet having three layer coating material sheet, and through cooling, bi-axial orientation, surface-coating by prime coating and top coating, winding and calendering to be a synthetic paper depending on the required thickness.