FOAMED AND STRETCHED PLASTIC BOTTLE
First Claim
1. A foamed and stretched plastic bottle having a foamed region which is formed in a body portion and in which foamed cells are distributed,wherein said foamed region contains a portion (β
- ), and in the portion (β
), lengths of the foamed cells in an axial direction of the bottle are so gradationally distributed as to be the greatest as they are positioned on an inner surface side of the body portion and as to be the smallest as they are positioned on an outer surface side thereof.
1 Assignment
0 Petitions
Accused Products
Abstract
A foamed and stretched plastic bottle having, in the body portion thereof, a foamed region in which foamed cells are distributed, wherein, in at least a portion of the foamed region, the lengths of the foamed cells in the axial direction of the bottle are so distributed as to gradually decrease as the positions of the foamed cells shift from the outer surface side of the body portion toward the central portion thereof and then gradually increase as their positions shift from the central portion thereof toward the inner surface side thereof. The foamed and stretched plastic bottle of the invention exhibits excellent light-shielding property.
4 Citations
4 Claims
-
1. A foamed and stretched plastic bottle having a foamed region which is formed in a body portion and in which foamed cells are distributed,
wherein said foamed region contains a portion (β - ), and in the portion (β
), lengths of the foamed cells in an axial direction of the bottle are so gradationally distributed as to be the greatest as they are positioned on an inner surface side of the body portion and as to be the smallest as they are positioned on an outer surface side thereof. - View Dependent Claims (2, 3, 4)
- ), and in the portion (β
Specification