子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Contact bodies and method and apparatus of making same | US09660955 | 2000-09-13 | US06544628B1 | 2003-04-08 | Richard J. Aull; Timothy E. Krell; Palle Rye |
| A contact body is disclosed, comprising at least two contact sheets having opposing surfaces and a projection extending outward from one surface of each contact sheet, wherein the projection defines a depression on the opposite surface of the contact sheet, a projection of one contact sheet being disposed within a depression of an adjacent contact sheet to form a projection-depression coupling, and the projection-depression coupling being deformed to form a positive lock. A method and apparatus of connecting contact sheets to form a contact body are also disclosed, that provide for deforming projection-depression couplings formed in two or more interlocking sheets to form positive locks by which assemblies of sheets are formed. The apparatus includes crimping devices that crimp projection-depression couplings located in the interior area of the interlocked sheets and projection-depression couplings located adjacent the side edges of the interlocked sheets, again to form positive locks by which assemblies of sheets are formed. | ||||||
| 62 | Method for continuous vacuum forming shaped polymeric articles | US09190038 | 1998-11-12 | US06319456B1 | 2001-11-20 | Thomas Gilbert; Kenneth D. Bosler; Edward C. Dell |
| This invention relates to methods and apparatus for manufacturing shaped polymeric articles by substantially continuous vacuum forming. The method includes providing a sheet of hot polymeric material which is disposed onto a rotating belt having a mold impression. Vacuum pressure is applied to the polymeric material through the belt so as to draw the hot polymeric material into intimate contact with the mold impression to form a patterned sheet portion and a remaining sheet portion. This method thereafter cools at least the patterned sheet portion below a heat deflection temperature of the polymeric material, forms the remaining sheet portion, and then cools the remaining sheet portion below the heat deflection temperature so that features other than the central pattern, such as nail and butt edges, can be mechanically worked into the polymeric sheet. | ||||||
| 63 | Advanced polymer/wood composite pellet process | US326480 | 1994-10-20 | US5695874A | 1997-12-09 | Michael J. Deaner; Giuseppe Puppin; Kurt E. Heikkila |
| A polyvinyl chloride and wood composite pellet by extrusion. The polyvinyl chloride and wood fiber are introduced into the extruder at a ratio of approximately 6:4 by weight, respectively. The polyvinyl chloride is melted and blended with the wood fiber so that the interstitial voids of the wood fiber are filled with polyvinyl chloride. After being extruded through a die, the molten material is cut into pellets having a bulk density of preferably between 0.7 to 0.8 gm/mm.sup.3. | ||||||
| 64 | Advanced polymer/wood composite pellet process | US17240 | 1993-02-12 | US5441801A | 1995-08-15 | Michael J. Deaner; Giuseppe Puppin; Kurt E. Heikkila |
| A process for making a polyvinyl chloride and wood composite pellet by extrusion. The polyvinyl chloride and wood fiber are introduced into the extruder at a ratio of approximately 6:4 by weight, respectively. The polyvinyl chloride is melted and blended with the wood fiber so that the interstitial voids of the wood fiber are filled with polyvinyl chloride. After being extruded through a die, the molten material is cut into pellets having a bulk density of preferably between 0.7 to 0.8 gm/mm.sup.3. | ||||||
| 65 | Apparatus for continuous vacuum forming of a hot plasticized material on a moving flat forming surface | US025519 | 1993-03-03 | US5314325A | 1994-05-24 | Kenneth Bosler |
| An apparatus for continuous vacuum forming of a hot plasticized material such as vinyl onto a moving flat forming surface defined between a first and second roller member which are continuously rotatable with a flexibly resilient belt and a woven flexible support belt extending therearound. The upper belt is of a flexibly rubber material and the lower belt is of an open woven metallic material to allow air to be drawn therethrough. These belts pass through a flat forming station positioned between two rollers against which vacuum forming is performed. A flexibly resilient pattern form is defined on the flexibly resilient belt including a plurality of vacuum apertures therein such that as the pattern form passes through the flat forming station a vacuum is applied through the woven support belt and to the apertures defined in the form to draw down the hot plasticized material onto the pattern form for continuous vacuum forming. The flexibility of the belts facilitates the vacuum forming operation and provides a flat surface against which the vacuum forming can be performed. | ||||||
| 66 | Retortable container | US627194 | 1990-12-13 | US5091231A | 1992-02-25 | Keith Parkinson |
| A retortable container has a wall of at least two co-formed laminas. This wall is highly impermeable to fluids selected from the group consisting of oxygen and aromatic vapors. The wall includes a first load-carrying lamina of a first plastic material. This load-carrying lamina has been formed without mechanical hysteresis in the melt phase by a thermal pressure forming apparatus to cause strengthening with orientation of the load-carrying lamina in at least one axis but without memory of its pre-melt phase shape. The wall also includes a second sealing lamina of a second plastic material. This second sealing lamina is coextensive with the first load-carrying lamina. Consequently, the container formed by the apparatus is retortable, i.e. it can withstand temperatures and pressures of a retort chamber without undergoing significant and permanent distortion. | ||||||
| 67 | Retortable container | US257206 | 1988-10-13 | US4997691A | 1991-03-05 | Keith Parkinson |
| A retortable container has a wall of at least two co-formed laminas. This wall is highly impermeable to fluids selected from the group consisting of oxygen and aromatic vapors. The wall includes a first load-carrying lamina of a first plastic material. This load-carrying lamina has been formed without mechanical hysteresis in the melt phase by a thermal pressure forming apparatus to cause strengthening with orientation of the load-carrying lamina in at least one axis but without memory of its pre-melt phase shape. The wall also includes a second sealing lamina of a second plastic material. This second sealing lamina is coextensive with the first load-carrying lamina. Consequently, the container formed by the apparatus is retortable, i.e. it can withstand temperatures and pressures of a retort chamber without undergoing significant and permanent distortion. | ||||||
| 68 | Heat-shrinkable laminate film and process to produce the same | US53404 | 1987-05-22 | US4892765A | 1990-01-09 | Nobuyuki Hisazumi; Keisuke Kahara; Yoshihiro Matsukura |
| The present invention discloses a heat-shrinkable laminate film which comprises a core layer of a copolymer of vinylidene chloride, two surface layers of a polyamide and an adhesive layer between core and surface layers and is excellent in a barrier property to gaseous oxygen, a barrier property of water vapor, an anti-creep property at a high temperature, an anti-pinhole property, a closely adhering property to meat, safety, an anti-curl property, an anti-creep property in warm water, an anti-delayed recovery property and an anti-peeling off property. | ||||||
| 69 | Modification of polymeric surface for improved adhesion via electron beam exposure | US36039 | 1987-04-08 | US4861408A | 1989-08-29 | Jeffry A. Kelber |
| Treating polymer surfaces, e.g., Teflon, particularly very thin surfaces, e.g., 50-10,000 .ANG. with low energy electron radiation, e.g., 100-1000 eV, in a high vacuum environment, e.g., less than 10.sup.-6 Torr, to enhance the ability of the surface to be adhered to a variety of substrates. | ||||||
| 70 | Films blown by the inflated bubble method of alloys of vinylidene chloride interpolymers and olefin polymers | US941482 | 1986-12-15 | US4780265A | 1988-10-25 | Nicole F. Whiteman; David P. Flores |
| Blends of a vinylidene chloride polymer, an olefin polymer, and a compatibilizer polymer are successfully fabricated into films using the well-known inflated bubble technique, by using blow-up rates in the range of about 1.5 to 5.0 and a drawn-down ratio upwards of 6, preferably upwards of 8, but not exceeding the critical draw-down ratio of 13. At a draw-down ratio exceeding 13, the physical properties of the polymer blend are seriously diminished. | ||||||
| 71 | Plastic vessel having oriented coating and process for preparation thereof | US496996 | 1983-05-23 | US4714580A | 1987-12-22 | Yoshitsugu Maruhashi; Isao Tanikawa; Sadao Hirata |
| Disclosed is a coated oriented plastic vessel formed by subjecting a parison, preform or sheet comprising a molecularly orientable thermoplastic resin substrate and a coating layer of a vinylidene chloride copolymer formed on at least one surface of said substrate to a draw-molding operation such as biaxial draw-blow-molding or draw-forming, wherein the coating layer of the vinylidene chloride copolymer has such a molecular orientation tht the sum of two-dimensional orientation coefficients (l+m) in the axial direction and circumferential direction is at least 0.03 as measured according to the polarized light fluorometry and the coating layer is not substantially peeled at the low-temperature burst test conducted at -5.degree. C. This coated oriented plastic vessel is prepared by a process comprising coating an aqueous latex of a vinylidene chloride copolymer on at least one surface of a parison, preform or sheet composed of a molecularly orientable thermoplastic resin, drying the coated latex to form a coated structure and subjecting the coated structure to a draw-molding operation such as biaxial draw-blow-molding or draw-forming at a temperature higher than the glass transition temperature of the vinylidene chloride copolymer but lower than the melting point of the vinylidene chloride copolymer, at which temperature draw-molding of said thermoplastic resin is possible, to thereby from the coated structure into a shape of a vessel while drawing the coating layer. | ||||||
| 72 | Reclamation of scrap vinylidene chloride polymer coated film | US751201 | 1985-07-02 | US4643861A | 1987-02-17 | Joseph F. Hager |
| Disclosed herein is a process for treating scrap thermoplastic film which has been treated with a saran coating. When the scrap film is cut into a convenient size, it is densified in the presence of a treatment medium which comprises a mixture of lime and an alkyl carboxylate and molded into pellet form. These pellets may then be employed in conventional extrusion and molding equipment without any degradation of the equipment which was normally seen when untreated saran-coated, scrap films were attempted to be molded or extruded. | ||||||
| 73 | Tubular film having sealing layer of propylene ethylene random copolymer | US449895 | 1982-12-15 | US4501780A | 1985-02-26 | Johnnie J. Walters; Philip T. Voso; Karl N. Caldwell |
| A heat sealing layer is provided for multiply tubular film preferably of the type having an inner shrink layer of an irradiatively cross-linked ethylene vinyl acetate copolymer, a core barrier layer of vinylidene chloride-vinyl chloride copolymer, and an outer abuse layer of an ethylene vinyl acetate copolymer, the sealing layer being melt bonded onto the shrink layer and being composed of a propylene ethylene random copolymer. Heat seals formed in making bags from the improved film demonstrate enhanced high temperature strength and grease resistance. An associated method for making the tubular film is also provided. | ||||||
| 74 | Method for making articles by radio frequency welding | US197789 | 1980-10-17 | US4338150A | 1982-07-06 | Brian Weeks |
| Surfaces of a blend of (1) unvulcanized chlorosulphonated polyethylene and/or chlorinated polyethylene, (2) a bituminous petroleum derivative of softening point in excess of 100.degree. C. and an asphaltene content in excess of 25% by weight and (3) a noninterfering anti-blocking agent are joined by radio frequency dielectric welding. | ||||||
| 75 | Method for preparing a film of vinylidene chloride polymer | US662660 | 1976-03-01 | US4112181A | 1978-09-05 | William G. Baird, Jr.; Stanley E. Holbrook; Jeremy A. Platt, deceased |
| A saran laminate film is produced by coextruding saran between outer plys of thermoplastic material. | ||||||
| 76 | Method for preparing a film of vinylidene chloride polymer | US460855 | 1974-04-15 | US4048428A | 1977-09-13 | William G. Baird, Jr.; Stanley E. Holbrook; Jeremy A. Platt |
| A film combination including two plies of thermoplastic polymer and therebetween a vinylidene chloride crystalline copolymer film which is substantially devoid of pinholes and scratches and has low oxygen permeability is prepared by coextruding the copolymer as a melt between melts of outer plies of thermoplastic polymer. The film combination may be biaxially oriented or substantially unoriented and may be irradiated with high energy electrons. The film combination can be used for many packaging applications. | ||||||
| 77 | Welded polymeric articles and process | US43667474 | 1974-01-25 | US3927233A | 1975-12-16 | NAIDOFF ROBERT J |
| Described herein are butt-welded polymeric articles and means of effecting joinder of crosslinked polymeric articles by means of such welds. The invention finds application in, e.g., forming large-diameter heat recoverable sleeves from cross-linked polymeric sheet for, e.g., corrosion-proofing pipe joints and the like. The weld is effected by heating under compression a thermoplastic insert containing a peroxide or other heatedactivated crosslinking agent.
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| 78 | Multiple-layered, weldable padded element | US47058674 | 1974-05-16 | US3889037A | 1975-06-10 | VAN DEN BERG HEINZ |
| A multiple-layered padded element weldable in a high-frequency field, for example for use in the automobile industry, includes a layer of PVC foam material provided between a cover layer of a thermoplastic synthetic resin film, and a dimensionally stable bottom layer. The bottom layer is optionally coated with an auxiliary polymeric welding agent and another layer is provided between the PVC foam layer and the dimensionally stable bottom layer. This other layer is joined to the layer of PVC foam material and comprises a welding wad of fibrous material wetted on its surface with a dispersion of a mixture of polyvinyl chloride and polyvinyl acetate.
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| 79 | Method for preparing of film of a vinylidene chloride polymer | US11469271 | 1971-02-11 | US3821182A | 1974-06-28 | BAIRD W; HOLBROOK S; PLATT J |
| A vinylidene chloride polymer film, a method of producing a direct laminate of vinylidene chloride and a non-saran thermoplastic polymer, preferably polyethylene, including procedures for orienting and irradiating the laminate and the method above wherein the outer polymer layers are stripped from the saran to provide a saran film.
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| 80 | Heat-shrinking package using foamed plastic sheet | US3734273D | 1970-09-14 | US3734273A | 1973-05-22 | WATANABE H |
| A packaged product of an article, which is liable to be marred on the surface or which is not allowed to form even a slight disorder on the surface, and a process for producing the said packaged product. The packaged product is obtained by use of a relatively soft foamed plastic, which can protect the surface of the packaged article more successfully than in the conventional heat shrinking packaging process using a film or in the conventional packaging process using a foamed plastic without heat-shrinking. The packaging process of the present invention has not only overcome the drawbacks of the said two processes but also provided unexpected effects.
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