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5240664 |
Method of manufacturing a door weather strip
The present invention is directed to a door weather strip in which the corner portions thereof are integrally formed with straight portions thereof. In order to obtain a predetermined sealing...
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5238623 |
Method for preparing microporous polyolefin shaped articles
A method for preparing a microporous polyolefin shaped article which includes the steps of (1) melt blending a polyolefin with an additive which is miscible with the polymer at the melt temperature...
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5234647 |
Method of manufacturing rubber sheet with rugged patterns formed on its one side surface portion
A method of manufacturing a rubber sheet with rugged patterns formed on one side surface portion includes the step of preparing an apparatus including a rotating roll having rugged patterns, a...
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5230851 |
Process of manufacturing a refastenable mechanical fastening system
A process for making a refastenable mechanical fastening system, made of free formed prongs joined to a substrate. The prongs taper and are nonperpendicularly oriented relative to the plane of the...
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5229055 |
Method and apparatus of producing hollow profiles from multilayer starting material
Hollow profile elements are formed by shaping a starting workpiece that consists of multiple layers of a material having a large width-to-thickness ratio, e.g., woven fabrics or laid materials. The...
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5223277 |
Apparatus for cutting an enveloped body
An improved apparatus for cutting an enveloped body, which consists of an assembly having at least three circumferentially disposed cutting members, each cutting member having at least two sliding...
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5219635 |
Sheathing web
There is described a sheathing web consisting essentially of a waterproof-coated spunbonded of filaments of organic fiber-forming material. The sheathing web has on at least one surface a structure...
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5215698 |
Extrusion tool and method of extrusion coating
An extrusion tool is provided for extruding a coating jacket onto a least one pre-coated conductor or conductor bundle. The extrusion tool comprises a frame, a first conical element, a second...
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5211901 |
Progressive moulding of composite materials
A method of progressively molding and curing/homogenising a composite material component assembly including a skin panel and a series of spaced structurally reinforcing members therefor. The method...
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5198161 |
Parison thickness control method
A parison thickness control system includes an extruder die and a mandrel which are movable relative to each other to change wall thickness of a parison extruded between the extruder die and the...
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5198245 |
Apparatus for the manufacture of extruded cakes
An apparatus for the production of extruded cakes of a paste-form material has an extrusion die nozzle which has combs having toothed profiles pivotally mounted in the lateral and upper portions of...
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5174939 |
Method of manufacturing a reinforced tire component
A method of manufacturing a reinforced component of a motor vehicle tire carcass, in particular a body ply (2) and/or tread ply (3), whereby an elongated reinforcing element (5) is fed onto a...
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5171500 |
Pipe manufacturing line
A production line for manufacturing corrugated pipe also has a calibrating basin for manufacturing smooth-walled pipe arranged between form paths of the corrugator when the paths have been...
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5167781 |
Continuous plastics molding process and apparatus
Continuous process and apparatus form products from thermoplastic materials between top and bottom mold carriages. A flexible silicone rubber mold adhered to a fiber belt continuously moves around...
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5164205 |
Apparatus for stamping monofilament for slider fastener coupling elements
An apparatus for stamping a monofilament to form shaped portions for slide fastener coupling elements, including: a stationary shaft having a mandrel extending from its one end; a pair of stamping...
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5162090 |
Method of molding tubular parts and apparatus for practicing the same
A method of and apparatus for molding a tubular part consisting of two lengthwise continuous portions of different cross-sectional shapes. The method involves extending or retracting a movable die...
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5156796 |
Forming hollow plastic product partially different in composition and its manufacturing apparatus
A composite parison generally cylindrical in shape and including two or more plastic materials different in characteristic is formed. Using this composite parison, a hollow plastic product of any...
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5154869 |
Cable conduit with ridged inner wall
An electrical conduit for wires or cables is formed by a tube extending along a longitudinal axis and having an inner wall formed with a plurality of longitudinally throughgoing ridges each formed...
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5147592 |
Process of and apparatus for preparing optical recording medium substrates
A process for preparing a substrate sheet for optical recording mediums includes the steps of extruding a molten resin to form a resin sheet and bringing the resin sheet into pressure between a...
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5139710 |
Shadow boundary process for the continuous radiant cure of composites
A method for the production of fiber reinforced palstic composites, in which a continuously moving array of fibers is impregnated with resin and fast cured as it passes through a shadow boundary...
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5132157 |
Stretched films of polyproplene
A stretched film of polypropylene which is excellent in transparency, substantially free of an antiblocking agent and at least uniaxially stretched and which is characterized in that it has...
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5116563 |
Process for producing a mechanical fastener
An improved process for forming a mechanical fastening prong and the prongs produced thereby. The prongs are produced by deposition of a heated, thermally sensitive material onto a substrate, which...
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5112546 |
Method of controlling thickness of thermoplastic extruded profile
A process is described for precisely controlling the thickness of a thermoplastic extruded profile by varying the output of a continuously operating extrusion die. The process employs an ancillary...
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5112547 |
Method of making an elongate article
Method of for continuously manufacturing a plurality of kinds of elongate articles with basically same and slightly different cross-sections, such as upper and side segments of automobile molding...
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5110660 |
Rubber spring element
In order to obtain a particularly soft spring characteristic the rubber spring element consisting of relatively hard material having good mechanical strength is traversed by cavities and hollow...
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5110529 |
Process for producing hollow moldings
A process for continuously producing an irregular shaped hollow molding includes the steps of extruding a molding material from a molding opening to form the first portion of the hollow molding,...
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5108682 |
Coextrusion apparatus and method using an elastic die for varying the outer profile of a tubular extrudate
Coextrusion apparatus for varying the outer profile of a generally tubular extrudate formed by inner and outer streams of elastomeric material by varying the annular end opening of an elastic die...
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5106567 |
Method for producing a heat set article of thermoformed polyethylene terephthalate
As an article of manufacture, an ovenable shaped article formed of polyethylene terephthalate having a degree of crystallinity of at least 20%, said crystallinity being substantially uniform over...
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5100607 |
Blow-molding methods to form containers having upper and lower sections of different thicknesses
A plastic container having base and sidewall portions is provided with corrugations as a unitary part of the sidewall portion. The sidewall portion is of a thickness that would not be capable of...
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5098634 |
Method of extension blow-molding container having upper and lower sections of different thickness
A container having upper and lower portions, the lower portion having self-supporting side walls and a bottom wall. The upper portion is flexible and non-self-supporting. Preferably, the upper and...
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5098626 |
Method for packing a measured quantity of thermosetting resin and operating a mold for encapsulating a component
Method for packing a measured quantity of thermosetting resin, intended for encapsulating a component such as an integrated circuit by introducing this quantity into a flexible plastics covering...
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5075060 |
Process for producing a substrate sheet for an optical recording medium
A process for producing an optical recording medium in a sheet form, including the steps of: melt-extruding a resin to form a resin sheet; and passing under pressure the resin sheet in a...
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5071604 |
Multi-layer parison forming apparatus and process
A multi-layer parison has a plurality of layers of main and auxiliary resins laminated with each other. An apparatus for forming the multi-layer parison includes a main resin extruding mechanism,...
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5069850 |
Coextrusion apparatus and method using a rigid die for varying the outer profile of a tubular extrudate
Coextrusion apparatus for varying the outer profile of a generally tubular extrudate formed by merging inner and outer streams of elastomeric material by varying the size of the annular outer...
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5066444 |
Process and apparatus for reducing color contamination in the process recycle of zippered thermoplastic bags
Disclosed are a process and apparatus for eliminating the problem of color contamination during product recycle in the manufacture of reclosable thermoplastic bags having zippers of a color...
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5062782 |
Coextrusion apparatus for varying the inner and/or outer profile of a tubular extrudate
Coextrusion apparatus for varying the inner profile of a generally tubular extrudate formed by a first stream of elastomeric material by an axially movable inner die ring which varies the size of...
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5059375 |
Apparatus and method for producing kink resistant tubing
Apparatus for producing flexible kink resistant tubing having one or more non-reinforced section(s) and one or more spirally-reinforced section(s). The apparatus includes a rotatable member having...
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5057259 |
Method and apparatus for injection molding continuous products
The method and apparatus for injection molding of continuous molded products employs a single endless flexible mold band having multiple injection ports revolving in registration with a rotating...
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5057267 |
Apparatus and method for forming hollow parisons of variable wall thickness
A parison forming device is disclosed for forming hollow polymer extrudes of variable wall thickness in either the circumferential or longitudinal directions, or in any combination thereof. The...
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5051081 |
Apparatus for producing spiral pipes with rib
A method for producing a spiral pipe with a rib includes continuously extruding a thermoplastic synthetic resin material in a molten state into a tubular form so as to have a diameter and a...
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5047195 |
Method of making a molded article
A method of molding articles including the steps of continuously moving a forming mold and a band-like molding member in a first and second endless path, respectively, engaging the respective mold...
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5028466 |
Extruder for continuously extruding a wall having a three-dimensional cellular structure, and a cellular wall provided thereby
An extruder in accordance with the invention comprises a die (1) having an opening (2) in the form of an uninterrupted section constituting a frieze of rectilinear or curved segments that meet one...
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5023029 |
Method and apparatus for producing pipe with annular ribs
The invention concerns apparatus for molding thermoplastic tubing having solid annular ribs. The apparatus is of the type where a tubular mold is defined by cooperatively interengaged mold block of...
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5022252 |
Extruding apparatus for extruding stepped products
An apparatus for extruding stepped extrusions, e.g. of aluminum or aluminium alloy, comprises a die holder carrying a major die, and a split minor die arranged for abutment with the downstream side...
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5022940 |
Process of making a drip irrigation conduit
A process and an installation for producing a drip irrigation conduit having discrete internally located emitter units bonded at axially spaced apart locations of an internal surface thereof,...
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5017321 |
Process for plastic tubing manufacture
The present invention is directed to the manufacture of plastic tubing exemplified by corrugated plastic tile and parts related thereto, in which molds for shaping an extrudable plastic material...
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5011642 |
Method of making extruded article
An extruded article is provided having a base element, and rib element attached to the base element along its entire length. The rib element is narrower at its attachment end than at its free end,...
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4988466 |
Method and an apparatus for the production of ribbed pipes
This invention relates to a method and an apparatus for the production of ribbed pipes. According to the method a plastic material is fed through an extruder into a pipe molding space (12) defined...
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4960375 |
Die for profile extrusion
A die for a profile extrusion for partly varying the profile of articles during a molding operation is provided. The die comprises a stationary die assembly and movable die assembly slidable on a...
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4952344 |
Method of and apparatus for making a fishing line
A fishing line, or just a leader, has a core (11) which is coated by plastic material as it is pulled through an extruder (3) and then a quench bath (4) by a variable speed drive device (9). Very...
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