摘要:
An apparatus for producing a polymer pellet is provided. The apparatus includes a conveying mechanism configured to convey a coated polymer, a supporting mechanism configured to support the coated polymer, a supporting plate having a deforming and cutting mechanism configured to deform and cut the coated polymer, a reciprocating mechanism configured to reciprocate the supporting plate upwardly and downwardly, and a collector configured to collect cut pellets. The reciprocating mechanism holds the supporting plate so that the deforming and cutting mechanism faces the coated polymer.
摘要:
A method and apparatus are provided for continuously producing a polymer pellet efficiently in which, in storing, transporting or feeding to a processing apparatus, the obtained pellets containing the adhesive polymer do not easily mutually adhere, and handling thereof is excellent. The method comprises a step of deforming at temperatures of about 30 to 150° C. under pressure an adhesive polymer coated with a thermoplastic polymer, and a step of cutting the deformed portion of the coated polymer.
摘要:
A process for a polyolefin-based resin composition, which comprises melt-kneading 100 parts by weight of a polyolefin-based resin and not less than 0.05 parts by weight and less than 2 parts by weight of polymer fine particles containing 0.10 to 90% by weight of a volatile component as an anti-blocking agent.
摘要:
A fine particle for modifying polyolefine is provide. The fine particle comprises (i) a core layer having a refractive index which differs from that of the polyolefine by 0.05 or less and (ii) a shell layer having a solubility parameter which differs from that of the polyolefine by 3 MPa½ or less, wherein the core layer is coated with the shell layer. The fine particle is excellent in affinity with polyolefine, and can modify polyolefine without accompanying damage on the transparency of the polyolefine.
摘要:
A polypropylene composition comprising 100 parts by weight of a crystalline propylene polymer having a molecular weight distribution (Mw/Mn) of less than 5.0 and from 0.0001 to 1.0 part by weight of a crystal nucleating agent, the composition having a crystallization temperature at least 1.5.degree. C. higher than the crystallization temperature of the crystalline propylene polymer.
摘要:
A polypropylene resin composition having a melt flow rate of 70 to 120 g/10 min (at 230° C., 2.16 kgf-load), a flexural modulus of 1300 to 4000 MPa and an IZOD impact strength of 30 to 100 kJ/m2, wherein the composition is obtained by adding a small amount of an organic peroxide to a mixture comprising 60 to 80% by weight of a specific propylene-ethylene block copolymer made up of a propylene homopolymer portion and a propylene-ethylene random copolymer portion, a rubber which is a copolymer of ethylene and at least one α-olefin having a melt flow rate of 2 to 10 g/10 min (at 190° C., 2.16 kgf-load), and inorganic filler (C), and kneading the combined ingredients at a temperature of 170 to 280° C.
摘要:
A process for producing an anti-blocking agent master batch, which comprises melt-kneading 100 parts by weight of a polyolefin-based resin and 2 to 100 parts by weight of polymer fine particles containing 0.10 to 20% by weight of a volatile component as an anti-blocking agent.
摘要:
A polyolefin resin composition comprising (a) 100 parts by weight of a polyolefin resin and (b) 0.05 to 1 part by weight of beads of a crosslinked polymer comprising (1) 5 to 99% by weight of a radically polymerizable monomer unit represented by the general formula (A): ##STR1## wherein R.sub.1 is hydrogen or a hydrocarbon group having 1 to 5 carbon atoms and R.sub.2 is a hydrocarbon group having 5 to 30 carbon atoms, (2) 0 to 94% by weight of a radically polymerizable monomer unit other than the monomer unit of the general formula (A), and (3) 1 to 20% by weight of a crosslinkable monomer unit, said crosslinked polymer beads having a critical surface tension of 40 dyne/cm or less.
摘要:
A polypropylene resin composition for oriented film excellent in transparency, slip property and blocking resistance which comprises the following components (a) and (b), and an oriented film obtained by orienting the composition at least in uniaxial direction:(a) 100 parts by weight of a crystalline polypropylene resin, and(b) 0.05 or more but less than 1 part by weight of crosslinked polymer beads which have a weight average particle diameter of 0.5-5 .mu.m, comprise 60-96% by weight of styrenic monomer units, 2-38% by weight of radical-polymerizable monomer units, the refractive index of the polymer of the radical-polymerizable monomer being 1.50 or less, and 2-50% by weight of crosslinkable monomer units, and give an average protuberance height of 60-600 nm on the surface of oriented film obtained by kneading the crosslinked polymer beads into the polypropylene resin followed by working up into oriented film.
摘要:
A method and apparatus are provided for continuously producing a polymer pellet efficiently in which, in storing, transporting or feeding to a processing apparatus, the obtained pellets containing the adhesive polymer do not easily mutually adhere, and handling thereof is excellent. The method comprises a step of deforming at temperatures of about 30 to 150° C. under pressure an adhesive polymer coated with a thermoplastic polymer, and a step of cutting the deformed portion of the coated polymer.