Pulp molded container and fabricating method thereof
AssigneeIntlpak Enterprises Corporation
InventorSu-Chu Chen Chuang
Life of this patent
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Abstract
A fabricating method of a pulp molded container includes providing a main material, performing a dispersing step, performing a pulping step, performing an additive adding step, and performing a heat compression molding step. The main material includes a long fiber pulp and a short fiber pulp. In the dispersing step, the main material is dispersed evenly in water to form an aqueous pulp solution. In the pulping step, the aqueous pulp solution is mechanically fibrillated to form a fibrillated pulp. In the additive adding step, an additive is added into the fibrillated pulp and mixed to form a paper pulp. In the heat compression molding step, the paper pulp is formed into the pulp molded container by heat compression molding.
Claims8
A fabricating method of a pulp molded container, comprising:
- providing a main material comprising a long fiber pulp and a short fiber pulp, wherein based on the main material being 100% by weight, the long fiber pulp is 1% by weight to 99% by weight, and a length of the long fiber pulp is longer than a length of the short fiber pulp;
- performing a dispersing step, wherein the main material is dispersed evenly in water to form an aqueous pulp solution;
- performing a pulping step, wherein the aqueous pulp solution is mechanically fibrillated to form a fibrillated pulp;
- performing an additive adding step, wherein an additive is added into the fibrillated pulp and mixed to form a paper pulp, the additive comprises a nanocellulose and/or a starch, and based on the main material 100% by weight, an added amount of the nanocellulose is 0.1% by weight to 30% by weight, and an added amount of the starch is 1% by weight to 50% by weight;
- and
- performing a heat compression molding step, wherein the paper pulp is formed into the pulp molded container by heat compression molding;
- wherein the fabricating method of the pulp molded container further comprises performing a pre-starch gelatinization step before the heat compression molding step, and the paper pulp is preheated at a temperature greater than 100° C. for more than 1 second to obtain a pre-starch gelatinized paper pulp;
- wherein in the heat compression molding step, the pre-starch gelatinized paper pulp is hot-pressed at a temperature above 100° C. for more than 10 seconds to perform a gelatinization reaction and shaping, so as to obtain the pulp molded container.
Dependencies are inferred from the claim text.