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US 2004/0164448 A1Published application
Method of producing a polymer body by coalescence and the polymer body produced
OwnerKent Al Olsson, Jianguo Liinventors
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OwnerKent Al Olsson, Jianguo Liinventors
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A method of producing a polymer body by coalescence, wherein the method comprises the steps of a) filling a pre-compacting mould with polymer material in the form of powder, pellets, grains and the like, b) pre-compacting the material at least once and c) compressing the material in a compression mould by at least one stroke, where a striking unit emits enough kinetic energy to form the body when striking the material inserted in the compression mould, causing coalescence of the material. A method of producing a polymer body by coalescence, wherein the method comprises compressing material in the form of a solid polymer body in a compression mould by at least one stroke, where a striking unit emits enough energy to cause coalescence of the material in the body. Products obtained by the inventive methods.
A method of producing a polymer body by coalescence, characterised in that the method comprises the steps of
A method according to any of the preceding claims for producing a body of UHMWPE, characterised in that the material is pre-compacted with a pressure of at least about 0.25×108 N/m2, in air and at room temperature.
A method according to any of the preceding claims, characterised in that the method comprises pre-compacting the material at least twice.
A method of producing a polymer body by coalescence, characterised in that the method comprises compressing material in the form of a solid polymer body in a compression mould by at least one stroke, where a striking unit emits enough energy to cause coalescence of the material in the body.
A method according to any of the preceding claims, characterised in that the polymer is compressed to a relative density of at least 70%, preferably 75%.
A method according to any of the preceding claims, characterised in that the method comprises a step of post-compacting the material at least once after the compression step.
A method according to any of the preceding claims, characterised in that the polymer is chosen from the group comprising elastomers, thermoplastics, thermoplastic elastomers and thermosetting polymers.
A method according to any of the preceding claims, characterised in that the body produced is a medical implant, such as a skeletal or tooth prosthesis.
A method according to any of the preceding claims, characterised in that the method comprises a step of post-heating and/or sintering the body any time after the compression or the post-compacting.
A method according to any of the preceding claims, characterised in that the body produced is a green body.
A method of producing a body according to claim 27, characterised in that the method also comprises a further step of sintering the green body.
A method according to any of the preceding claims, characterised in that the material is a medically acceptable material.
A method according to any of the preceding claims, characterised in that the material comprises a lubricant and/or a sintering aid.
Dependencies are inferred from the claim text.