TH9599Y - Woven plastic bags or sacks have a plastic coating on the outside and a layer of plastic film on the inside. - Google Patents

Abstract

DC60 (05/06/57) This invention describes a woven plastic bag or sack with a plastic coating on the outside, layered with another layer of plastic film on the inside. This bag is then processed using a glue injection machine or a hot melt machine to create layers of plastic film and a rolled bag. Or, woven plastic bags with a plastic coating on the outside, bonded together by injection molding in strips and placed in sections. Rolls of plastic film such as CPP (Cast Polypropylene), OPP (Oriented Polypropylene), BOPP (Biaxially Oriented Polypropylene), LLDPE (Linear Low Density Polyethylene), and HDPE (High Density Polyethylene) are placed inside the container with the plastic coating on the outside. This is to prevent moisture from penetrating and damaging the packaged product, as well as to protect it from further damage. The dust generated during the packaging of cement, flour, and powder products, as well as the environmental damage caused by this woven plastic bag or sack, can be melted down and reused as plastic pellets in manufacturing. The woven plastic bag or sack with a plastic coating on the outside is then subjected to a hot melt adhesive injection molding process. This process bonds the plastic film layer and the outer woven plastic bag layer together by injecting the film in strips. The plastic film used is typically CPP (Cast Polypropylene) and/or OPP (Oriented Polypropylene). Polypropylene) and/or Biaxially Oriented Polypropylene [BOPP (BIAXIALLY ORIENTED POLYPROPYLENE)] and/or Alkyl DPE (Linear Low Density Polyethylene) [LLDPE (LINEAR LOW DENSITY POLYPROPYLENE)] are processed using an injection molding machine or a hot melt machine to bond the plastic film layer and the woven plastic roll layer with an outer plastic coating. The bonding is done by injecting the material in strips and placing them in sections. (Correction: June 5, 2014) The woven plastic bag or sack with an outer plastic coating is layered with another plastic film layer inside the bag, as described in this invention. This is a woven plastic bag or sack with an outer plastic coating, which is then subjected to an injection molding machine or a hot melt machine to bond the plastic film layer and the bag roll layer. Alternatively, woven plastic bags with a plastic coating are applied to the outside of the plastic bag. The coating is applied in strips, placed in sections. Rolls of plastic film such as CPP (Cast Polypropylene), OPP (Oriented Polypropylene), BOPP (Biaxially Oriented Polypropylene), LLDPE (Linear Low Density Polyethylene), and HDPE (High Density Polyethylene) are placed inside the container with the plastic coating on the outside. This prevents moisture from penetrating and damaging the packaged product, as well as protecting against dust generated during the packaging of products such as cement, flour, and powder. This occurs during packaging and also helps reduce environmental damage because these woven plastic bags or sacks can be melted down into plastic pellets and reused in manufacturing.

Claims (1)

1. Woven plastic containers with a plastic film coating on both the outside and inside. The film types used are CPP (Cast Polypropylene),/or OPP (Oriented Polypropylene),/or BOPP (Biaxially Oriented Polypropylene), and/or LLDPE (Linear Low Density Polyethylene). This is achieved through an injection molding machine or hot melt machine, which bonds the plastic film layer and the woven plastic roll with the outer plastic coating together by extruding the film in strips and placing them in sections. (Correction: June 5, 2014) 1. Woven plastic bags or sacks have a plastic coating on the outside and layers of plastic on the inside. They are made of PP (polypropylene) and PE (high-density polyethylene) plastics, available in clear or colored tapes. The plastic is processed using heat to create a film, then passed through a slitting machine to create strands. These strands are then stretched and heated to increase their strength. These strands are then wound onto a weaving machine. There are two types of weaving: the first type is the longitudinal tape, called the "sequential tape," and the second type is the transverse tape, running back and forth in a shuttle motion, creating a woven pattern. The woven tape is then rolled and coated with PP or low-density polyethylene (clear or colored as specified). This coating is layered inside the woven bag. Finally, the plastic is melted using an injection molding machine, where heat molten the plastic into a liquid form. This liquid flows through a nozzle, extruding the plastic or glue into strands. The process involves using compressed air to inject a layer of plastic film onto the outside of the bag. The woven sack and film rolls are bonded together using adhesive or heated plastic, in continuous lines along the length of the bag. The number of lines depends on the size of the bag. Both plastic layers then pass through a series of rollers to further compress them, resulting in a strong bond. A key characteristic of this process is that the plastic is less prone to tearing, making production and quality control easier.