Abstract: A lid is provided for covering or sealing a cup by engaging a rim flange of the cup. The lid includes a top portion and an annular side plate which extends downwardly from periphery of the top portion. The plate is formed with a hole. An engagement plate is disposed on the side plate. A bottom edge of the engagement plate is connected to the plate. A top edge of the engagement plate stretches upwardly along the hole, so that the engagement plate is located in the hole. The plates are flexible. As such, the engagement plate can be pressed and bent inwardly when the lid covers a cup. The engagement plate would then engage with the rim flange of the cup so as to enhance engagement of the lid and the cup.

Abstract: A process for manufacturing a heat insulation container mainly includes preparing a coating material by mixing a binder and a thermo-expandable powder, coating such coating material on a surface of a container and then heating the container to foam the coated material after the container is shaped. The foamed coating material is therefore provides the container with heat insulation property. The thermo-expandable powder consists of a plurality of thermo-expandable microcapsules, each of which consists of a thermoplastic polymer shell and a solvent wrapped by the thermoplastic polymer shell. To obtain a smooth surface, the soften point of the binder is required to be lower than the boiling point of the solvent.

Abstract: A lid is provided for covering or sealing a cup by engaging a rim flange of the cup. The lid includes a top portion and an annular side plate which extends downwardly from periphery of the top portion. The plate is formed with a hole. An engagement plate is disposed on the side plate. A bottom edge of the engagement plate is connected to the plate. A top edge of the engagement plate stretches upwardly along the hole, so that the engagement plate is located in the hole. The plates are flexible. As such, the engagement plate can be pressed and bent inwardly when the lid covers a cup. The engagement plate would then engage with the rim flange of the cup so as to enhance engagement of the lid and the cup.

Abstract: A method for making heat-insulated paper containers and the products made by the same. The method includes steps of: (a) mixing and blending polyethylene terephthalate or polypropylene with an adhesive to form a polymer material; (b) heating and extruding the polymer material with an extruder machine to form a film and coating a surface of paper with the film; (c) cooling and laminating the paper with a laminating roller; (d) continuously coating another surface of the paper with a foam material; and then furling the paper after drying; and cutting the paper into a semi-product and then molding into a paper container; (e) heating the foam material with a heating device. The method can enhance the foam uniformity and the production rate, and decrease the defective rate.

Abstract: A container includes a paper-made container body, a waterproofing layer and a foaming layer. The container body has an outer surface and an inner surface. The waterproofing layer is coated on the inner surface in the manner of lamintaing. The waterproofing layer mainly consists of talcum powder, resin and calcium carbonate. The foaming layer is disposed on at least a part of the outer surface. The foaming layer consists of a binder and a thermo-expandable powder. The binder is selected from a group consisting of polyvinyl acetate resin, ethylene vinyl acetate resin, polyacrylic acid resin and a mixture thereof. The thermo-expandable powder consists of a plurality of thermo-expandable microcapsules, each of which consists of a thermoplastic polymer shell and a low-boiling-point solvent wrapped by the thermoplastic polymer shell.

Abstract: The method of forming a pigment layer and a foam layer on a substrate includes steps of material preparation, material coating, pigment coating and foaming. A coating material layer is coated on the substrate, and then a pigment layer is coated on the substrate before the coating material layer is foamed. Thus the pigment can be coated on the substrate more quickly, easily and more accurately.

Abstract: A process for coating a foamed coating material on a container or the like mainly includes preparing a coating material by heat blending or kneading a solid thermoplastic binder with a solid thermo-expandable powder consisting of a plurality of solid thermo-expandable microcapsules till the solid thermoplastic binder being gelatinized so that the thermo-expandable microcapsules being uniformly spread in the gelatinized thermoplastic binder, coating such coating material on a surface of a container and then heating the container to foam the coated material. The foamed coating material is therefore provides the container with heat insulation property.

Abstract: A process for manufacturing a heat insulation container mainly includes preparing a coating material by mixing a binder and a thermo-expandable powder, coating such coating material on a surface of a container and then heating the container to foam the coated material. The foamed coating material is therefore provides the container with heat insulation property. The thermo-expandable powder consists of a plurality of thermo-expandable microcapsules, each of which consists of a thermoplastic polymer shell and a low-boiling-point solvent wrapped by the thermoplastic polymer shell. To obtain a smooth surface, the soften point of the binder is required to be lower than the boiling point of the solvent.