TWM570087U - Paper straw - Google Patents

Abstract

A paper straw is integrally bent from a piece of paper into a polygonal tubular shape, the paper comprising a base paper layer, and two layers of a coating layer respectively coated on opposite sides of the base paper layer, the paper straw comprising a A surrounding wall defining a suction channel, and a bonding wall extending from one side edge of the surrounding wall to the other side edge and abutting against the outer side surface of the surrounding wall. The paper straw is bent into a three-hexagonal tubular shape by the paper material, and the bonding wall is welded to the surrounding wall, so that the paper has the advantages of stiffness, safety and environmental protection.

Description

Paper straw

The present invention relates to a straw, and more particularly to a paper straw suitable for sucking fluid substances.

Traditional straws are made of plastic materials, but they are usually discarded as garbage after being used. They not only waste the earth's resources, but also are not environmentally friendly. Therefore, the restriction of plastic straws has become a worldwide trend, and various alternatives have been proposed. For example, paper straws, metal straws, glass straws, sugar cane straws, etc.

In the case of a conventional paper straw, the paper is spirally wound by a long piece of paper, and the overlapping portion at the edge is fixed by adhesive bonding, and the paper straw can achieve the purpose of reducing environmental pollution. However, it is not easy to manufacture, and the stiffness is not good. When it is immersed in a drink and used for sucking, it will become wet and soft to be used within 3 to 5 minutes, and the adhesive for adhesion will slowly dissolve and penetrate into the drink. In addition, it affects human health, so the design of paper straws in the past still needs to be improved.

Accordingly, it is an object of the present invention to provide a paper straw that overcomes at least the disadvantages of the prior art.

Therefore, the novel paper straw is integrally bent from a piece of paper into a polygonal tube, the paper material comprising a base paper layer, and two layers of coating layer respectively coated on opposite sides of the base paper layer, the paper The straw comprises a surrounding wall defining a suction channel and a bonding wall extending from one side edge of the surrounding wall to the other side edge and abutting against the outer side of the surrounding wall.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1, 2, and 3, a first embodiment of the present paper straw is integrally bent into a polygonal shape by a piece of paper 2 along a length direction 1. In the first embodiment, the paper straw is The equilateral quadrilateral tube body, that is, the square tube body, has a maximum lateral width of 5 to 18 mm. Of course, in other embodiments, the paper tube can also change shape, angle, size or length, for example Rectangular, trapezoidal, 鹞-shaped, etc., such as an equilateral quadrilateral tube, or a non-orthogonal quadrilateral tube such as a diamond or a rhombic.

In the first embodiment, the paper 2 for forming the paper straw has a three-layer structure, the paper 2 includes a base paper layer 21, and two layers are respectively coated on opposite sides of the base paper layer 21. Coating layer 22. The base paper layer 21 is a food grade paper material which is naturally safe and does not affect the environment. The base paper layer 21 has a basis weight of 80 to 285 grams per square meter (gsm). The material of each layer of the coating layer 22 is selected from the group consisting of polylactic acid (PLA), polyethylene (PE), polypropylene (PP) or a composition thereof, or other materials which can be naturally decomposed or environmentally safe, such as each layer. The base layer 22 has a basis weight of 16 to 38 grams per square meter (gsm). In the manufacturing, after the paper 2 is bent, the laminated coating layers 22 are heat-sealed and welded to each other, that is, can be fixedly formed.

Looking further at the structure of the paper straw, the paper straw comprises a surrounding wall 3 encircling a polygonal tubular shape, and a side wall extending from one side edge of the surrounding wall 3 to the other side edge and being welded to the surrounding wall 3 The bonding wall 4 on the outer side. The surrounding wall 3 includes two side wall portions 31 connected to each other and bent along the longitudinal direction 1 , and two opposite sides respectively bent along the length direction 1 and connected to the opposite side wall portions 31 and mutually Adjacent to the side wall portion 32 having an angle. The side wall portions 31 and the side wall portions 32 cooperate to define a suction passage 5 extending along the longitudinal direction 1. One of the side wall portions 32 and the joint wall 4 are connected to each other and integrally formed, and the other of the side wall portions 32 is provided for the joint wall 4 to be welded. The width of the bonding wall 4 stacked on the surrounding wall 3 is not particularly limited and may be smaller or larger than the width of the side wall portion 32, preferably equal to the width of the side wall portion 32.

Since the paper straw has a quadrangular tubular shape and has four edges 6 extending along the longitudinal direction 1 and parallel to each other, it has high stiffness, so when the paper straw is used, it can be directly extended downward into the cup and inserted into the sealing tube. Covering or piercing the sealing film (not shown), of course, is also suitable for obliquely using the corners of one of the edges of the edge 6, easily piercing the sealing film or inserting the cover, when immersed in the drink and used for sucking, still The hardness and shape are maintained, and the bonding wall 4 is bonded to the surrounding wall 3 by means of welding, and the arrangement of the coating layers 22 is provided, so that the base paper layer 21 can be prevented from being wetted and softened, and there is no The situation in which the glue is dissolved into the drink does not affect human health.

Referring to Figures 4, 5 and 6, respectively, a second embodiment, a third embodiment and a fourth embodiment of the novel paper straw, the configurations of the embodiments are substantially the same as the first embodiment, the difference The paper suction tube of the second embodiment is a triangular tube body, and the number of the side wall portions 31 is one. The paper straw of the third embodiment is a pentagonal tube body, and the number of the side wall portions 31 is three. The paper straw of the fourth embodiment is a hexagonal tube body, and the number of the side wall portions 31 is four. Of course, the paper straws of the embodiments may be equilateral polygonal tubes or unequal polygonal tubes.

In summary, the paper suction tube is bent into a three-hexagonal tubular shape by the paper material 2, and is combined by hot-pressure welding, so that the structure is not only stiff, but also does not dissolve adhesive or toxic substances during use. It does not affect human health, and its structure is simple and low-cost, so it can achieve the purpose of this new type.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧ Length direction

2‧‧‧paper

21‧‧‧ base paper layer

22‧‧‧Layer layer

3‧‧‧ Around the wall

31‧‧‧ Side wall

32‧‧‧Border wall

4‧‧‧Bound wall

5‧‧‧ suction channel

6‧‧‧Edge

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is an incomplete perspective view of a first embodiment of the present paper straw; Figure 2 is the first FIG. 3 is a schematic cross-sectional view showing a first embodiment of the present invention; FIG. 4 is a cross-sectional enlarged view of a second embodiment of the present paper straw; FIG. A cross-sectional enlarged view of a third embodiment of a paper straw; and Figure 6 is an enlarged cross-sectional view of a fourth embodiment of the present paper straw.

Claims (8)

A paper straw is integrally bent from a piece of paper into a polygonal tubular shape, the paper material comprising a base paper layer, and two layers of a coating layer respectively coated on opposite sides of the base paper layer, the base paper layer The basis weight is 80~285 g/m2, and the basis weight of each layer of the coating layer is 16~38 g/m2. The paper straw comprises a surrounding wall defining a suction channel, and a A side wall extending from one side of the surrounding wall to the other side edge and abutting against the bonding wall on the outer side of the surrounding wall. The paper straw according to claim 1, wherein the surrounding wall comprises at least one side wall portion, and two side wall portions respectively bent and connected to opposite sides of the at least one side wall portion and adjacent to each other at an angle One of the equilateral wall portions and the coupling wall are connected to each other and integrally formed, and the other of the equilateral wall portions is for the bonding wall to be welded. The paper straw of claim 1 or 2, wherein the paper straw is a three-hexagon tube. The paper straw of claim 3, wherein the paper straw is an equilateral polygonal tube. The paper straw of claim 3, wherein the paper straw is an unequal polygonal tube. The paper straw according to claim 1, wherein the paper straw has a maximum lateral width of 5 to 18 mm. The paper straw according to claim 1, wherein the base paper layer is a food grade paper material, and the material of each layer of the coating layer is selected from the group consisting of biodegradable or environmentally safe materials. The paper straw according to claim 1, wherein the base paper layer is a food grade paper material, and the material of each layer of the coating layer is selected from the group consisting of polylactic acid, polyethylene, polypropylene or a composition thereof.