Pulp molded body
AssigneeKao Corporation
InventorsKenichi Otani, Yoshiaki Kumamoto
Life of this patent
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Abstract
A pulp molded article (1) of the present invention comprises a neck portion (2) and a thread (5) provided on the outer surface of the neck portion (2), and has an overrun torque of 1 N·m or higher between the neck portion and a threaded cap screwed on the neck portion (2).
Claims22
A pulp molded article comprising a neck portion and a thread provided on an outer surface of said neck portion, the neck portion including an outwardly curled upper edge, the neck portion being formed to withstand an overrun torque of 1 Nm or higher.
A pulp molded article, comprising:
- a neck portion including an outwardly curled edge;
- a body portion;
- and
- at least one thread is provided on a surface of the neck,
- wherein the outwardly curled edge is configured to withstand an overrun torque of at least 1 Nm.
A method of forming a pulp molded article, comprising:
- pouring a predetermined amount of pulp slurry into a cavity of a mold, the mold including a body portion and a neck portion having at least one thread form thereon;
- evacuating the cavity of excess fluid, thereby depositing a preform layer of pulp slurry on the cavity of the mold;
- dewatering the preform;
- curling an upper edge of the neck portion to form a lip;
- and
- drying the preform.
A pulp molded article, comprising:
- a neck portion;
- a body portion;
- and
- at least one thread is provided on a surface of the neck,
- wherein the neck is configured to withstand an overrun torque of at least 1 Nm, wherein the at least one thread satisfies at least two of the following equations:
- 1<S/W ≦1.5;
- 0<W ≦10t;
- 0<W<10 mm,
- wherein S is a width of the at least one thread, W is a height of the at least one thread, and t is a thickness of a wall of the neck portion.
A method of forming a pulp molded article, comprising:
- pouring a predetermined amount of pulp slurry into a cavity of a mold, the mold including a body portion and a neck portion having at least one thread form thereon;
- evacuating the cavity of excess fluid, thereby depositing a preform layer of pulp slurry on the cavity of the mold;
- dewatering the preform;
- and
- drying the preform,
- wherein the forming comprises forming at least one thread satisfying at least two of the following equations:
- 1<S/W ≦1.5;
- 0<W≦10t;
- 0<W<10 mm, and
- wherein S is a width of the at least one thread, W is a height of the at least one thread, and t is a thickness of a wall of the neck portion.
Dependencies are inferred from the claim text.