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US 2026/0116068 A1Published application
Flow channel member, liquid ejection head, and method for molding flow channel member
OwnerShimpei Yoshikawa, Yasuaki Kitayama +3inventors
InventorsSHIMPEI YOSHIKAWA, YASUAKI KITAYAMA, YUKUO YAMAGUCHI, RYO SATO, DAIKI YAMAMOTO
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Abstract
A technique for reducing product damage is provided. To this end, a joining resin has, in at least one of a first molded product and a second molded product, a penetration portion penetrating through the molded product in a lamination direction in which the molded products are laminated and an anchor portion having a larger cross-sectional area than the rest of the penetration portion.
Claims13
A flow channel member comprising:
- a first molded product;
- a second molded product configured to be laminated to the first molded product in a lamination direction;
- a resin configured to join the first molded product and the second molded product to each other;
- and
- a penetration portion of the resin, wherein
- the penetration portion penetrates at least one of the first molded product and the second molded product in the lamination direction, and
- the penetration portion includes a first region and a second region having a larger cross-sectional area than the first region, viewed in the lamination direction.
4 more elements
A method for molding a flow channel member, the method comprising:
- a first molding step of molding a first molded product;
- and
- a second molding step,
- wherein a second molded product is formed in a plurality of dies,
- wherein, in the second molding step:
- the plurality of dies are opened after the molding of the first molded product,
- at least one die of the plurality of dies is moved to a position in which the first molded product and the second molded product face each other in a lamination direction,
- the dies are closed, and
- a resin is poured into a space formed at a location where the first molded product and the second molded product abut against each other to join the first molded product and the second molded product to each other,
- wherein the space includes a penetration space penetrating through at least one of the first molded product and the second molded product in the lamination direction,
- wherein the penetration space includes a first region and a second region, and
- wherein the second region has a cross-sectional area larger than a cross-sectional area of the first region, viewed in the lamination direction.
9 more elements
Dependencies are inferred from the claim text.