摘要:
A face shield comprising a contoured visor with three-dimensional structures with varying angles along multiple axes for improved protection and user comfort, an adjustable attachment member for easy user adjustment, and head contact area with improved ventilation. Methods of producing optically clear three-dimensional plastic structures with varying angles along multiple axes and tools for said method.
摘要:
Apparatus and methods of forming selected portions of integral sheets of material are disclosed. Unformed portions of the sheets may remain undistorted during the forming process, allowing them to contain text, art work, or other desired information without material risk of the information being degraded or becoming unintelligible during the forming process. This result may be accomplished, moreover, with less trim than usually occurs in conventional forming processes.
摘要:
The present invention generally relates to systems and methods for generating, processing, handling and forming plastic materials into an end product such as, but not limited to, consumables and packaging. The plastic materials are made into preforms or preform sheets, which in turn may be selectively masked to expose desired regions of the same for a saturation process, a heating process, or both. In addition, the various processes may be sufficiently controlled to obtain a desired micro-structure, and in turn obtain desired mechanical, structural, and aesthetic properties in the end product. By way of example, an embodiment of the present invention results in consumable, plastic cups that are lighter weight and more structurally robust less than conventional plastic cups. Further to one or more embodiments of the present invention, various systems for material handling may be utilized to efficiently, timely and cost effectively produce the preforms.
摘要:
Apparatus and methods of forming selected portions of integral sheets of material are disclosed. Unformed portions of the sheets may remain undistorted during the forming process, allowing them to contain text, art work, or other desired information without material risk of the information being degraded or becoming unintelligible during the forming process. This result may be accomplished, moreover, with less trim than usually occurs in conventional forming processes.
摘要:
A polarizing lens is constituted in succession by a mechanical support layer made of polycarbonate, the intermediate layer made of polyvinyl alcohol, and an outer layer made of cellulose triacetate. The invention also provides a method of fabricating such a lens.
摘要:
A full face mask (1) for a PAPR (Powered Air Purifying Respirator) to be used in health hazardous environments, having an air inlet (7, 8) and an air outlet (16), manufactured in one piece from a transparent plastic in a one step vacuum forming process with a single curved field of vision (4) exempt from distorsions and comprising a compartment (5) inside a forehead area of the full face mask for accommodating a blower unit (2).
摘要:
There is provided a method for manufacturing a decorated molding having projections and depressions in a decorated surface, the method including, while a heat-shrinkable resin sheet is supported, a step (1) of creating a difference in thickness between an area A and an area B adjacent to each other in the same plane of the resin sheet through irradiation with infrared rays so that the area A and the area B have surface temperatures different from each other and the surface temperature of at least the area A is a surface temperature that is higher than or equal to a temperature T of an inflection point of orientation returning strength of the resin sheet and a step (2) of attaching the resin sheet to an adherend by vacuum forming to achieve integration. In a method for simultaneously performing vacuum forming and decoration, a decorated molding having projections and depressions in a decorated surface can be obtained with high reproducibility without requiring a physical method such as embossing.
摘要:
Apparatus and methods of forming selected portions of integral sheets of material are disclosed. Unformed portions of the sheets may remain undistorted during the forming process, allowing them to contain text, art work, or other desired information without material risk of the information being degraded or becoming unintelligible during the forming process. This result may be accomplished, moreover, with less trim than usually occurs in conventional forming processes.
摘要:
Food packaging 31 is disclosed which can be in the form of a sealable tray (30) having a plastics film liner (51). The liner is applied under differential air pressure, for example positive pressure and/or a vacuum, and following heating of the film. The resultant tacking film sticks to the tray (30), only sufficiently to hold together in use. After use the tray and film can be split readily. The film is heated and domed away from the tray prior to applying the air pressure, to stretch it and assist in its application into the tray (30).