TH1524B - The process for preparing container closures with an inner layer - Google Patents

Abstract

The process for preparing the inner container cover consists of dispensing a lump of molten thermoplastic resin into the container cap, radiating the resin mass onto the appropriate part of the inner surface of the container. The denominator closes the container while keeping the molten resin mass intact, and then extrusions spread out during the cooling of this mass so that as an inner layer Container cover with high resistance inner layer breaking by stress and which is firmly attached to the lid over time One can be well prepared according to this process. Moreover, the sealing properties of these container closures are improved and the sealing force is improved. One is for opening the bottle that is closed by this container closure part is lowered.

Claims (9)

1. The process for manufacturing the cover of a container with an inner layer consisting of laying thermoplastic resins for making the inner layer. The molten resin in the closed frame, the molten resin extrusion by the It is maintained at high temperature to spread the resin on the inner surface of the casing, and then the diffused molten resin is printed. By a stamping machine that has been cooled to print resin as The shape of the secondary layer in the last 2. Process of claim 1, where the structure is closed. It is a metal frame with a primer coating for bonding. By heating the inner layer, at least on its inner surface. 3. Process of claim No. 1 where the resin of The thermoplastic is an olefin type resin and the enclosures are metal enclosures with a minimum layer of primer. One on the matte surface of the enclosure for bonding By the heat being made up of four Which contains polyethylene Oxidized or acid modified alifin resin Dispersed in film-forming resin 4. Process of claim No. 1 where the resin type Olyfins are low density polyethylene with a melting index of 0.1 to 20 g / 10 min. 5. Process of claim No. 4, where polyethylene The low-density type contains 3 to 40% ethylene / propylene copolymer or elastane by weight on a polyethylene basis. As a component for making modifications 6. Process of claim No. 1 where the resin fused The liquid is spread by a hammer with a surface temperature of Maintained at a temperature above the vicat softening point of the inner layer resin. 7. Process of claim No. 1 where the resin that Molten is radiated so that its area will be At least one-third of the last sub's projected area. 8. Process of claim No. 1 where the framework The cover is a wide mouth cap with a ring-like inner gripper and molten resin is fed on the inner gripper. In the form of one or more mass or continuous rings 9. The process for producing closures for containers with layers Secondary in which the composition of the resin is placed. Thermoplastic for making a molten substrate containing a casting agent. Inside the wide-mouth enclosures, the molten resin is extruded by a hammer treated at high temperatures. To spread the molten resin onto the inner surface Of the enclosures, then print the molten resin that radiates Then distributed by a cooled hammer To make it a secondary layer in which the segments along the line The circumference for the sealing is thicker than the middle of the It with lubricant distributed in the surface of the part along The circumference of more than 1 0. Process of claim No. 1 where resins request Thermoplastic contains 0.01 to 10% lubricant by weight (10 claims, 2 faces, 6 photos).