Invention Grant
US5288353A Method for forming a polymeric plastic product having a hard
wear-resistant surface
失效
形成具有耐磨损表面的聚合物塑料制品的方法
- Patent Title: Method for forming a polymeric plastic product having a hard wear-resistant surface
- Patent Title (中): 形成具有耐磨损表面的聚合物塑料制品的方法
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Application No.: US822905Application Date: 1992-01-21
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Publication No.: US5288353APublication Date: 1994-02-22
- Inventor: Gopal S. Revankar
- Applicant: Gopal S. Revankar
- Applicant Address: IL Moline
- Assignee: Deere & Company
- Current Assignee: Deere & Company
- Current Assignee Address: IL Moline
- Main IPC: B29C43/18
- IPC: B29C43/18 ; B29C31/00 ; B29C43/34 ; B29C45/14 ; B29C69/00 ; B29C70/64 ; B29K23/00 ; B29K75/00 ; B29K105/16 ; B32B19/02
Abstract:
A method for impregnating a plastic product with a hard wear-resistant material surface layer comprises providing a support plate having a desired shape and further having an adhesive layer on at least a portion thereof; introducing a plurality of particles comprising a hard wear-resistant material onto the adhesive layer; curing the adhesive so as to anchor the particles onto the support plate; placing the support plate into a mold cavity; introducing a polymer material into the cavity; exposing the sheet and polymer material to conditions effective to provide a polymer product having a hard wear-resistant material surface layer therein; cooling the mold and removing the support sheet therefrom. In a preferred embodiment, a regular pattern of particles is provided by providing a mesh plate having a desired pattern of holes set for predetermined size of wear-resistant particles; spreading the particles onto the mesh plate so as to provide a particle in substantially all of the holes; and transferring the pattern of particles onto the adhesive layer so as to minimize contact with the adhesive. The polymer material employed in the present invention can be a polymer powder, a liquified polymer or a two part adhesive mixture which reacts to form a thermoset polymer product.
Public/Granted literature
- US5951528A Hypodermic needles Public/Granted day:1999-09-14
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