Abstract A method for producing a thermoplastic resin sheet or a flller-containing thermoplastic resin sheet by which method a difficulty-workable thermoplastic resin as well as an ordinary thermoplastic resin can be formed Into a sheet and various kinds of fillers can be compounded into the sheet. The method is characterized in that a thermoplastic resin or a composition of a thermoplastic resin and a filler is fed in powder or preformed sheet form between a pair of tensioned endless belts disposed parallel and travelling together around a set of rolls, the endless belts being heated by being brought into surface-to-surface contact with heating rolls while travelling along a path having at least one bend formed by the heating rolls, and the material is heated and compreseed between the endless beits and melted into an integral body at or above the matting point or softening point of the thermoplastic resin.
A method for producing a thermoplastic resin sheet or a filler-containing resin sheet which method is characterized in that a thermoplastic resin or a composition of a thermoplastic resin and a filler is fed in powder or preformed sheet form between a pair of tensioned endless belts disposed parallel and travelling together around a set of rolls, said endless belts being heated by being brought into surface-to-surface contact with heating rolls while travelling along a path having at least one bend formed by said heating rolls, and said material is heated and compressed between said endless belts and melted into an integral body at or above the melting point or softening point of said thermoplastic resin.
Claim 2
Independent Claim
116 words
A method for producing a thermoplastic resin sheet or a filler-containing resin sheet which method is characterized in that a thermoplastic resin or a composition of a thermoplastic resin and a filler is fed in powder or preformed sheet form between a pair of tensioned endless belts disposed parallel and travelling together around a set of rolls, said endless belts being heated by being brought into surface-to-surface contact with heating rolls while travelling along a path having at least one bend formed by said heating rolls, and said material is heated and compressed between said endless belts and melted into an integral body at or above the melting point or softening point of said thermoplastic resin.
Claim 3
Dependent Claim
37 words
The method for producing a thermoplastic resin sheet or a filler-containing resin sheet in Claim 1, wherein said endless belts are endless metal belts and said belts are tensioned under a tension of at least 3 kg/cm.
Claim 4
Dependent Claim
80 words
The method for producing a thermoplastic resin sheet or a filler-containing resin sheet according to Claim 1 or 2, wherein said thermoplastic resin is a member selected from the group consisting of polyethylene resin having an intrinsic viscosity of 8 or higher in a decalin solution at 135°C, fluorocarbon resin, polycarbonate resin, polyimide resin, polyamide-imide resin, polyether ether ketone resin, polyether sulfone resin, polysulfone resin, polyphenylene oxide resin, polyphenylene ether resin, polyphenylene sulfide resin, aromatic polyamide resin and polyester resin.
Claim 5
Independent Claim
48 words
The method for producing a thermoplastic resin sheet or a filler-containing resin sheet according to any of the Claims 1 to 3, wherein said filler is at least one member selected fran the group consisting of fibrous fillers, scaly fillers, flaky fillers, needle fillers and hollow particle fillers.
Claim 6
Independent Claim
45 words
The method for producing a thermoplastic resin sheet or a filler-containing resin sheet according to any of the Claims 1 to 4, wherein the compounding ratio of said filler is 5 to 1000 parts by weight to 100 parts by weight of said thermoplastic resin.
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