Plant-fiber molding cup cover with inner convex ring and manufacturing method
A technology of plant fiber and molded cups, applied in the direction of removable lid/cover, sustainable manufacturing/processing, bio-packaging, etc., can solve the problem of destroying the surface structure of the cup lid, wrinkling on the surface of the cup lid, and poor anti-loosening effect To achieve the effect of ensuring the sealing effect, convenient production and molding, and reducing production links
Pending Publication Date: 2020-01-03
EURASIA LIGHT IND EQUIP MFR +1
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Problems solved by technology
The cup lid structure described in these two patents can only be realized by secondary processing; but because the molded pulp molded cup lid has been formed and dried, the surface of the cup lid will be wrinkled or wrinkled by the second processing. Cracking, destroying the surface structure of the cup cover; what is more serious is that the "barb groove" or "groove" and "anti-loose inner convex strip" or "buckle" made by the secondary processing method are still There will be rebound, and the anti-loosening effect of this kind of pulp molded cup lid is not good in actual use
Method used
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[0029] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.
[0030] Such as figure 2 , Figure 2.1 , Figure 2.2 , Figure 2.3 As shown, in the cross-sectional figure of the plant fiber molded cup cover, from the edge of the cup cover to the center of the cup cover, the straight side 3 on the side of the cup cover, the arc-shaped groove 2, the annular transition surface 6, and the side containing the boss are sequentially connected smoothly. The cup lid boss 5 with straight sides 7, the annular transition surface 6 can be flat or curved or other, and the top surface of the cup lid boss can be made into various shapes (such as inclined planes, openings, etc.) ,Such as Figure 2.1-1 As shown, the boss 5 of the cup cover can also be on the same plane as the annular transition surface 6, and there is no straight edge 7 on the side of the boss at this time.
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The invention relates to a plant-fiber molding cup cover or box cover which is made by a plant fiber molding method and comprises paper pulp, and a cup cover or box cover made of a plant-fiber and starch mixed foaming material. The aim is to provide a novel plant-fiber molding cup cover structure, the cup cover structure can make close contact with the annular opening edge of a paper cup body without secondary processing to achieve sealing, and loosening and falling of the cup cover can be prevented. According to the technical scheme, the plant-fiber molding cup cover with an inner convex ringis provided, the cross-sectional shapes, from the edge to the center of the cup cover, of the cup cover sequentially are a cup-cover side straight flange, an arc groove, an annular transitional surface and a cup-cover boss which are smoothly connected, wherein the cup-cover boss includes a boss side straight flange and can be on the same plane with the annular transitional surface. The cup coveris characterized in that the outer side of the cup-cover side straight flange has no dents, the inner convex ring for clamping connection and cooperation with the annular opening edge of a paper cup is manufactured at a proper position of the inner side.
Description
technical field [0001] The invention relates to a plant fiber cup cover or box cover including pulp, and a cup cover or box cover of plant fiber and starch mixed foaming material made by plant fiber molding method; these cups made of plant fiber Covers and lids, especially for covering paper cups or cartons, need to be combined with paper cups or cartons. Disposable plant fiber molded cup lids or lid products (hereinafter collectively referred to as cup lids), which can be round, Square or various other shapes. Background technique [0002] The traditional cup lid adopts plastic blister or injection molding. Because the plastic cup lid is elastic, it is easy to fasten the mouth of the paper cup. However, the cup lid made of plastic will not degrade and cause white pollution to the environment. Therefore, it is necessary to use degradable plant fiber molded cup lids to replace plastic cup lids. The manufacturing process of plant fiber molded products is: the plant fibers ar...
Claims
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IPC IPC(8): B65D43/06A47G19/22
CPCB65D43/06A47G19/2205Y02W90/10
Inventor 郑天波郑卓
Owner EURASIA LIGHT IND EQUIP MFR