resin pellets

Abstract

The objective is to provide resin pellets that exhibit relatively good transportability from feeders. [Solution] The resin pellet according to the present invention is a resin pellet containing a polyolefin resin, wherein the degree of dispersion obtained by dividing the secondary load-average particle size by the load-average particle size is 1.004 or more and 1.017 or less.

Claims

1. Resin pellets containing polyolefin resin, A resin pellet having a dispersion degree of 1.004 or higher and 1.017 or lower, obtained by dividing the secondary load-average particle size by the load-average particle size.

2. The resin pellet according to claim 1, wherein the polyolefin resin comprises at least one selected from the group consisting of ethylene polymers and propylene polymers.

3. The polyolefin resin contains low-density polyethylene as the ethylene polymer. The density of the aforementioned low-density polyethylene is 900 kg / m³. ３ More than 930kg / m ３ The resin pellet according to claim 2, which is as follows:

4. The polyolefin resin includes, as the ethylene polymer, ethylene-vinyl acetate copolymer or ethylene-methyl methacrylate copolymer. The density of the ethylene-vinyl acetate copolymer or ethylene-methyl methacrylate copolymer is 920 kg / m³. ３ More than 950kg / m ３ The resin pellet according to claim 2, which is as follows:

5. The polyolefin resin includes a propylene homopolymer or a propylene-ethylene random copolymer as the propylene polymer. The density of the propylene homopolymer or propylene-ethylene random copolymer is 890 kg / m³. ３ More than 920kg / m ３ The resin pellet according to claim 2, which is as follows:

6. The resin pellet according to claim 1 or 2, wherein the load-average particle size of the resin pellet is 2.50 mm or more and 3.40 mm or less.

7. The resin pellet according to claim 1 or 2, wherein the dispersion degree of the resin pellet is 1.005 or more and 1.010 or less.

8. The resin pellet according to claim 1 or 2, wherein the proportion of the first fraction obtained by the sieving method is 50% by mass or more and 100% by mass or less.

9. The resin pellet according to claim 1 or 2, wherein the sum of the first and second fractions obtained by the sieving method is 80% by mass or more and 100% by mass or less.

10. The resin pellet according to claim 1 or 2, wherein the major axis obtained by approximating the resin pellet as an ellipse is 3.4 mm or more and 5.0 mm or less.

11. The resin pellet according to claim 1 or 2, wherein the ratio of the major axis to the minor axis (aspect ratio) obtained by approximating the resin pellet as an ellipse is 1.10 or more and 1.40 or less.

12. The resin pellet according to claim 1 or 2, wherein the average mass per 10 pellets is 0.11 g or more and 0.26 g or less.

13. The resin pellet according to claim 1 or 2, wherein the degree of dispersion is divided by the sum (mass%) of the first and second fractions obtained by the sieving method, and the resulting value multiplied by 100 is 1.004 or more and 1.120 or less.

Images