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US 2026/0116019 A1Published application
Method and apparatus for thermoforming an article
AssigneeBerry Global, Inc.
InventorsJonathan EICKHOFF, Ryan DEWIG, Jeffrey A. MANN, Roy E. ACKERMAN, Dan EICHELBERGER, Holden W. BARNES, Zachary L. BAUGHMAN
Life of this patent
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Abstract
A method for thermoforming an article includes extruding a sheet of material, conditioning the sheet with a roller, thermoforming the sheet to provide a web, and cutting the web to provide the article.
Claims19
A method of providing at least one lid for a container, the method comprising
- providing a sheet comprising non-aromatic polymeric materials comprising polypropylene,
- rotary thermoforming the sheet onto a mold to provide an article-blank web, wherein the rotary thermoforming stage includes applying the sheet to a rotary thermoformer including a rotor mounted to rotate about a rotation axis of the rotary thermoformer and the mold which is coupled to the rotor for rotation therewith, and
- cutting the article-blank web to provide at least one lid, and
- wherein the at least one lid has a haze to clarity ratio between about 0.1 and about 1.5, wherein the haze is measured using ASTMD 1003 procedure B and the clarity is measured using ASTM D 1746.
1 more element
A method of providing at least one lid for a container, the method comprising
- extruding a sheet comprising polymeric material,
- rotary thermoforming the sheet onto a mold to provide an article-blank web, and
- cutting the article-blank web to provide the at least one lid,
- wherein the at least one lid has a clarity to lid thickness ratio between about 4000 to about 6500, wherein the clarity is measured using ASTM D 1746.
1 more element
A method of providing a plurality of articles, the method comprising
- providing a sheet comprising polymeric materials,
- rotary thermoforming the sheet onto a mold to provide an article-blank web,
- cutting the article-blank web to form a carrier web and a plurality of article preforms coupled with the carrier web after molding the sheet, and
- separating the plurality of article preforms from the carrier web to provide the article,
- wherein the plurality of articles have a thickness of about 0.012 inches or less and have a gram weight standard deviation of 0.110 grams or less.
2 more elements
Dependencies are inferred from the claim text.