TWI743785B - Cup lid capable of being matingly engaged with cup - Google Patents

Abstract

A cup lid capable of being matingly engaged with a cup is integrally molded from paper-plastic material. The cup lid includes a C-shaped accommodation groove, two convex arcuate fringes formed on two edges of the C-shaped accommodation groove respectively, such that the C-shaped accommodation groove and the two convex arcuate fringes are engaged with an upper rim of the cup matingly, thus obtaining a tight fixing and closing effect.

Description

Paper-plastic molded cup lid that can completely fasten the cup body

The present invention is a paper-plastic molded cup lid that can completely fasten the cup body, and particularly refers to a cup lid that is formed into an integral shape by using paper-plastic molding technology. The inner side of the cup lid is provided with a C-shaped ring receiving groove, A convex arc wall is protruded at both ends of the C-shaped ring receiving groove, and the cup body can be completely fastened and sealed by the C-shaped ring receiving groove and the convex arc wall at both ends of the C-shaped ring receiving groove Edge, so as to achieve the effect of complete tightening and sealing.

With the rising awareness of environmental protection and the gathering of many intelligent research and development, paper-plastic products molded from pulp fiber materials or plant fiber materials have the advantage of being easy to recycle, remanufacturing and reusing, because they are quickly used by all walks of life. And accepted and adopted by the general public, a variety of paper-plastic products will gradually replace all kinds of plastic products in life, whether it is bowls, plates, cup lids, straws, packaging materials, shock absorbers and other paper-plastic products will gradually replace plastics Products, paper-plastic products, because the material changes from plastic to paper-plastic, in the process of paper-plastic molding, it is not as well-known in the industry as plastic products and easily molded into various shapes, so there are still many products that cannot be achieved during or after molding. The effect or function of plastic products, but the paper and plastic industry has just started, and there is still a lot of room for improvement and development. As one of the most common consumables in daily life, the requirements for the use of cup lids are particularly rigorous. In addition to food-grade materials and sanitary conditions, the cup lid as the container body requires better sealing and greater safety. sex.

Please refer to Figures 5 and 6, the current conventional paper-plastic cup lid 3 is far less tightly sealed than plastic cup lids due to the limitation of molding conditions and materials. Angled grooves, inwardly inclined sloping walls, or various different geometric methods are used as the locking portion 31 of the cup body 4. When the hoop 41 outside the cup body 4 is fastened, it is easy to cause the cup cover 3 because the size cannot be completely fitted. It is easy to fall off or cannot be completely sealed, which often causes the liquid in the cup body 4 to leak or overflow. The clamping part 31 of the conventional paper-plastic cup lid 3 usually only considers the fastening method without considering its strength. If the strength is considered, it cannot be achieved. The best fastening strength makes the conventional paper-plastic cup lid 3 easy to deform due to the influence of the outer hoop 41 of the cup body 4, and it is more likely to cause the conventional paper-plastic cup lid 3 to fall off due to external forces. Better sealing and safety.

The main purpose of the present invention is to provide a paper-plastic molded cup lid that can completely fasten the cup body, in particular to a cup lid that is formed into an integral shape by using paper-plastic molding technology, and the inside of the cup lid has a C The C-shaped ring receiving groove is provided with a convex arc wall at each end of the C-shaped ring receiving groove. The C-shaped ring receiving groove and the convex arc wall at both ends of the C-shaped ring receiving groove can be completely fastened and sealed Hold the upper edge of the cup body to achieve a complete tightening and sealing effect.

The secondary objective of the present invention is to provide a paper-plastic molded cup lid that can completely fasten the cup body. The convex arc wall at one end of the ring groove can abut the outer surface of the upper edge of the cup, while the convex arc wall at the other end of the C-shaped ring groove can abut the inner surface of the upper edge of the cup, so that The cup lid is simultaneously fastened to the outer and inner sides of the upper edge of the cup body to achieve a completely fastened and sealed state.

In order for the examiner to understand the specific structure of the present invention in more detail, please refer to the first to third figures. The present invention provides a paper-plastic molded cup lid 1 that can completely fasten the cup body 2 and uses pulp fiber material. Paper-plastic molding technology is used to form an integrally molded cup lid 1. The cup lid 1 is provided with a central closing surface 10, and an annular side wall 11 extends downward from the outer edge of the central closing surface 10, the annular side wall The end of 11 is expanded with a circular expansion wall 12 in the horizontal direction, and the circular expansion wall 12 is turned by a circular arc and extends to form a vertically downward circular lower side wall 13. The circular shape of the cup cover 1 The inner surface of the arc turning point between the expansion wall 12 and the annular lower side wall 13 is provided with a C-shaped ring receiving groove 14, and a convex arc wall is protruding at both ends of the C-shaped ring receiving groove 14. The first convex arc wall 15 and the second convex arc wall 16 are the first convex arc wall 15 protruding from one end of the C-shaped ring receiving groove 14 close to the annular side wall 11 on the inner surface of the annular expansion wall 12 , And the other end of the C-shaped ring receiving groove 14 is protrudingly provided with the aforementioned second convex arc wall 16 on the inner surface of the annular lower side wall 13. The first convex arc wall 15 and the second convex arc wall 16 of the head can completely fasten and seal the upper edge of the cup 2.

According to the view direction of the third figure and the three-dimensional space coordinates as an illustration, the central point C of the aforementioned C-shaped ring receiving groove 14 extends along the Z-axis direction to a vertical vertical line V, and the central point C of the C-shaped ring receiving groove 14 A horizontal line E extends in the X-axis direction. The first convex arc wall 15 is the vertex P at the outermost vertex, and the second convex arc wall 16 is vertex Q at the outermost vertex. The vertex of the first convex arc wall 15 The connecting line between P and the central point C of the C-shaped ring receiving groove 14 is the line L, and the connecting line between the vertex Q of the second convex arc wall 16 and the central point C of the C-shaped ring receiving groove 14 is the connecting line K, with C The central point C of the shaped ring receiving groove 14 is used as a reference. The angle θ formed by the line L and the line K is less than 180 degrees, forming an angular form to completely fasten the outer hoop ring 21 to the C-shaped ring receiving groove 14 Inside, so as to achieve the effect of complete tightening and sealing.

According to the view direction of the fourth figure and the three-dimensional space coordinates as an illustration, the central closed surface 10 of the aforementioned cup cover 1 is provided with a central axis U at the center, and extends in the X-axis direction on the outer surface of the highest vertex of the central closed surface 10 A horizontal line G is drawn. The longitudinal distance between the horizontal line G extending from the outer surface of the highest vertex of the central closed surface 10 and the outermost vertex P of the first convex arc wall 15 is the distance A, and the outer surface of the highest vertex of the central closed surface 10 extends from The longitudinal distance between the horizontal line G and the outermost apex Q of the second convex arc wall 16 is the distance B, which is smaller than the longitudinal distance B, and the central axis U of the central closed surface 10 and the outermost apex of the first convex arc wall 15 The horizontal distance of P is the distance M, and the horizontal distance between the central axis U of the central enclosed surface 10 and the outermost vertex Q of the second convex arc wall 16 is the distance N, which is smaller than the horizontal distance N.

When the cup cover 1 is placed on the cup body 2 from top to bottom, the ring-shaped lower side wall 13 and the second convex arc wall 16 of the cup cover 1 are in turn against the upper edge of the cup body 2 and set downward. According to the embodiment of the cup body 2 of the present invention as shown in the third figure, the upper edge of the cup body 2 is an outer hoop 21 formed by curling a thin sheet. When the outer hoop 21 of the cup body 2 is subjected to The second convex arc wall 16 of the cup cover 1 is slightly deformed when pressed, and the outer hoop ring 21 continues to follow the surface of the second convex arc wall 16 to the C-shaped ring receiving groove 14 on the inner side of the cup cover 1. At this time, the cup body 2 The outer hoop 21 is completely accommodated in the C-ring receiving groove 14 and is in close contact with it without gaps, and the first convex arc wall 15 of the cup cover 1 is in contact with the inner surface of the outer hoop 21 of the cup body 2. 22. The second convex arc wall 16 of the cup cover 1 is in contact with the outer side surface 23 of the outer hoop 21 of the cup body 2. After the C-shaped ring receiving groove 14 of the cup cover 1 is combined, the second convex arc wall 16 is located on the outer side 23 of the outer hoop 21 of the cup body 2 and has a reduced diameter toward the inner side and the outer side of the outer hoop 21 of the cup body 2 23. A first external force F1 is exerted on collision 23, and a second external force F2 is exerted on the first convex arc wall 15 located outside the cup 2 and the inner surface 22 of the hoop 21 when in collision, that is, the first convex arc wall 15 and the second The two convex arc walls 16 have a difference in distance, so that the first convex arc wall 15 and the second convex arc wall 16 can simultaneously exert a force on the inner surface 22 and the outer surface 23 of the outer hoop 21 of the cup body 2. Moreover, the structural design of the first convex arc wall 15 and the second convex arc wall 16 further enhances the strength of the cup cover 1 without being easily affected by external forces and deforms, thereby achieving the effect of complete fastening and sealing.

In summary, the present invention provides a paper-plastic molded cup lid 1 that can completely fasten the cup body 2. The inner surface of the arc turning point between the expansion wall 12 and the annular lower side wall 13 is provided with a C-shaped ring receiving groove 14. The inner surface of the wall 12 is convexly provided with a first convex arc wall 15, and the other end of the C-shaped ring receiving groove 14 is convexly provided with a second convex arc wall 16 on the inner surface of the ring-shaped lower side wall 13, by which the C-shaped ring receives The groove 14 and the first convex arc wall 15 and the second convex arc wall 16 at the two ends of the C-shaped ring receiving groove 14 can completely fasten and seal the upper edge of the cup 2 to achieve the effect of complete fastening and sealing .

1: Cup lid 10: Central closed surface 11: Annular side wall 12: Circular Amplification 13: Ring bottom wall 14: C-ring groove 15: The first convex arc wall 16: second convex arc wall 2: cup body 21: Outer hoop 22: inner side 23: Outer side 3: Cup lid 31: Card System Department 4: Cup body 41: Outer hoop C: central point V: vertical line E: horizontal line P: vertex Q: Vertex L: Connect K: Connect θ: Angle U: Central axis G: horizontal line A: distance B: distance M: distance N: distance F1: First external force F2: second external force

The first figure: is a cross-sectional view of the cup lid of the present invention. The second figure: is a schematic cross-sectional view of the combination of the cup cover and the cup body of the present invention. The third picture: is a partial enlarged view of the second picture. The fourth figure: is a half-sectional plan view of the first figure. Figure 5: Schematic diagram of common forms of conventional cup lids. Figure 6: Schematic diagram of common forms of conventional cup lids.

1: Cup lid

10: Central closed surface

11: Annular side wall

12: Circular Amplification

13: Ring bottom wall

14: C-ring groove

15: The first convex arc wall

16: second convex arc wall

Claims (3)

A paper plastic molded cup lid that can completely fasten the cup body. The cup lid is made of paper pulp fiber material to form an integrated cup lid with paper plastic molding technology. The upper edge of the cup body is formed by curling a thin sheet. A hoop, the cup lid is provided with a central closed surface, and an annular side wall extends downward from the outer edge of the central closed surface. The circular wall is then turned by a circular arc and extends to form a vertically downward circular lower wall. The inner side of the arc at the turning point between the circular wall and the circular lower wall of the cup cover has a C The type ring receiving groove is characterized in that a convex arc wall is protruded at both ends of the C-shaped ring receiving groove. One end of the C-shaped ring receiving groove on the side wall is convexly provided with the aforementioned first convex arc wall on the inner surface of the annular expansion wall, and the other end of the C-shaped ring receiving groove is convexly provided with the aforementioned second convex wall on the inner surface of the annular lower wall. Convex arc wall, the central point of the aforementioned C-shaped ring groove extends along the Z-axis direction and a vertical line, and the central point of the C-shaped ring groove extends a horizontal line along the X-axis direction, and the first convex arc wall is at the most The outer vertex is the vertex, the second convex arc wall is the vertex at the outermost vertex, the vertex of the first convex arc wall and the central point of the C-shaped ring groove are connected as a line, and the second convex arc wall The connecting line between the apex and the central point of the C-shaped ring groove is another connection line. Taking the central point of the C-shaped ring groove as the reference, the angle θ formed by the two connecting lines is less than 180 degrees, forming an angle form The outer hoop ring is completely fastened in the C-shaped ring receiving groove, and the C-shaped ring receiving groove and the first convex arc wall and the second convex arc wall at both ends of the C-shaped ring receiving groove can be completely fastened and combined. The upper edge of the cup body is sealed, that is, the cup cover can completely fasten the outer hoop of the cup body and achieve a sealing effect. The paper-plastic molded cup lid that can completely fasten the cup body as described in claim 1, wherein the central closed surface of the aforementioned cup lid is provided with a central axis at the center, and is located on the outer surface of the highest vertex of the central closed surface and is based on the X axis A horizontal line extends in the direction, the first convex arc wall is the vertex at the outermost vertex, the second convex arc wall is the vertex at the outermost vertex, and the central closed surface is the highest The longitudinal distance between the horizontal line extending from the outer surface of the vertex and the outermost vertex of the first convex arc wall is distance A, and the longitudinal distance between the horizontal line extending from the outer surface of the highest vertex of the central closed surface and the outermost vertex of the second convex arc wall is the distance B, the longitudinal distance A is less than the longitudinal distance B, and the horizontal distance between the central axis of the central closed surface and the outermost vertex of the first convex arc wall is the distance M, and the central axis of the central closed surface is the distance between the central axis of the central closed surface and the second convex arc wall. The horizontal distance of the outermost vertex is the distance N, and the horizontal distance M is less than the horizontal distance N. The paper-plastic molded cup lid that can completely fasten the cup body as described in claim 2, wherein when the cup lid is combined with the cup body, after the outer hoop ring of the cup body is combined with the C-shaped ring receiving groove of the cup lid, The aforementioned second convex arc wall is located on the outer surface of the cup body. The outer surface of the hoop ring is inwardly reduced in diameter and exerts a first external force on the outer surface of the hoop ring outside the cup body. The first convex arc wall is located on the cup body. When the inner surface of the outer hoop is in conflict, a second external force is applied, that is, there is a distance drop between the first convex arc wall and the second convex arc wall, so that the first convex arc wall and the second convex arc wall can be simultaneously Apply force to the inner and outer sides of the hoop outside the cup body.

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