Patent classifications
B29C51/265
Formed thermoplastic article having smooth edges
The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling.
Formed Thermoplastic Article Having a Peelable Surface and Smooth Edges
The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling. A liner sheet may be attached to the feedstock sheet prior to, during, or after forming and can be peelable therefrom.
METHOD OF FORMING PATIENT-SPECIFIC IMPLANT
Methods and apparatus are provided for forming a patient-specific surgical implant based on mold system. The apparatus comprises a forming tool and a mold that may be generated using imaging and processing techniques and rapid prototyping methods. The mold apparatus includes at least two non-adjacent surface features for securing an implant forming material (such as a titanium mesh) during the forming process, enabling the implant forming material to be stretched beyond its elastic and thus permanently deformed with the correct patient-specific curvature. The implant may include one or more anatomic surface features for guidance and registration when transferring the implant to a patient.
METHOD FOR DOUBLE-SHEET THERMOFORMING OF A HOLLOW BODY AND RESULTING HOLLOW BODY
The use of sheets comprising at least one face consisting of a pseudo-amorphous composition based on polyaryl ether ketone(s) for a twin sheet thermoforming process. A twin sheet thermoforming process for manufacturing a hollow body. A hollow body comprising at least one internal surface consisting of a crystallized composition based on polyaryl ether ketone(s), obtainable by the process.
Tray-Shaped Article Having Smooth Edges and Amenable to Multiple Film Sealing Methods
The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling.
Ram-Based Methods for Forming Thermoplastic Article Having Smooth Edges
The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling.
FORMING STATION FOR A THERMOFORM PACKAGING MACHINE
A forming station for a thermoform packaging machine, wherein the forming station comprises a forming tool upper part and a forming tool lower part that are each configured for cooperating so as to thermoform a film positioned between the forming tool lower part and the forming tool upper part. The forming station includes a first change bar that is adapted to be releasably attached to a reception area of the forming tool lower part and the first change bar carries a plurality of punches or blades.
Formed Thermoplastic Article Having Smooth Edges
The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling.
METHOD FOR MANUFACTURING A CUSHION AND CUSHION
The invention relates to a method for producing a cushion for an orthopedic device, the cushion having a first component, which comprises a first film layer and a second film layer, and a second component that are joined with each other in such a way that there is at least one fluid-filled volume between the first component and the second component, the method comprising the following steps: inserting the first film layer, which has at least one opening, and the second film layer into a tool, which has an upper mold and a lower mold; applying a differential pressure to at least one of the film layers, so that the at least one film layer moves at least in sections towards the upper mold or the lower mold, thereby creating a distance between the two films; joining the two film layers along at least one connection line.
PROCESS AND APPARATUS FOR PRODUCING PACKETS
Provided is a process for thermoforming a gas and liquid permeable layer (10) of thermoplastic material having an average thickness of less than 1.0 mm, the process comprising the steps of bringing the layer of thermoplastic material, at a temperature below that required for thermoforming, into contact with a mould (16) at a temperature above that of a thermoforming temperature of the thermoplastic material; pressing the mould into contact with the layer of thermoplastic material, the contact between mould and thermoplastic material causing heat to transfer from the mould to the thermoplastic material and raising the temperature of the thermoplastic material to a thermoformable temperature; such pressing thereby causing thermoforming of the thermoplastic material to conform to the shape of the mould.