TWI395697B - Single-lobe filter bag for infusion products - Google Patents

Description

Single-lobed filter bag for soaking products Field of invention

The present invention relates to a single-lobed or single-chamber filter bag for soaking products such as tea, coffee, chamomile or the like.

Background of the invention

There are many different types of filter bags (or tea bags) available on the market today for soaking the above products in boiling water.

The range of filter bags currently available is extremely wide. This is due to the increasing use of consumers in the home and public places and the popularity of filter bags, which has caused an increasing demand, especially from product distribution. Business, they will ask to change the filter bag design, and can obtain filter bags with improved properties for product content, easy to exchange with liquid when soaking, storage life, and finally packaging.

There are two main designs currently in use for traditional single-valve bags (usually with tethers and labels), as well as the now widely available double-valve bags (also with tethers and labels, with or without individual covers) The sheet is characterized in that it has a large surface area which is in contact with the liquid, which enables the taste of the soaked product to be optimally released.

Over the years, these two designs have been made from different types of filter paper, including more advanced biodegradable products.

Similarly, the method of closing the bag and attaching the tether and label (in their existing design) will be changed according to the needs of the product; in some countries, the law requires: for example, The wires, labels and filter bags are provided with a metal filament, a glue, a heat-sealable "attachment stamp", a stitch formed by the thread itself, or a viscous patch or the like for closing and joining.

All of these can improve the quality of the filter bags, the method used to make them (filter bag making machine), and the end user satisfaction.

However, in response to its product improvement policy, applicants have noted that current filter bags, especially single-lobed bags, which are particularly relevant to the present invention, have some inherent reflections due to their shape, more specifically That is, because they have a single chamber, they tend to lack proper three-dimensional or volumetric properties. This has the following disadvantages: the product is more limited in the bag, that is, there is only a small space to stretch when soaking, which means that there will be poor quality soaking liquid and long soaking time; flattening The surface of the filter bag will be shaped incorrectly; these filter bags will be more difficult to package due to possible movement during positioning.

The flattening and movement of the filter bags may compromise or reduce the overall quality of the product being loaded. Also, please note that a slack (ie single) filter bag cannot be erected for display (when displayed and selected), unlike other types of filter bags, such as tetrahedral or pyramidal filter bags; however, they It will be more expensive than a single pocket.

Summary of invention

To this end, Applicants have created a single-lobed filter bag that overcomes the above-discussed shortcomings and that has a structure that provides a "harder" configuration in addition to the conventional features of a conventional single-lobed filter bag. It meets the market demand and at the same time improves the overall quality of the soaking liquid and the filter bag itself.

Accordingly, the present invention achieves this by providing a single-lobed filter bag, particularly a single-lobed filter bag for infusing a product, which includes the technical features described in one or more of the patent applications.

Simple illustration

The technical features of the present invention are clearly described in the scope of the final application, and the advantages thereof will be described in the following detailed description with reference to the accompanying drawings. The preferred embodiments are provided by way of example only and are not intended to limit the scope of the inventive concept; and wherein: Figures 1 through 4 respectively show a single filter bag for soaking products in accordance with the present invention. A perspective view, a front view, a side view, and a bottom view of an embodiment; Fig. 5 is a front view showing a modification of the filter bag of Figs. 1 to 4; and Figs. 6 to 10 respectively show a use according to the present invention. A perspective view, a front view, a right side view, a left side view, and a bottom view of a second embodiment of a single-lobed filter bag for infiltrating a product; and FIG. 11 is a perspective view showing a variation of one of the filter bags of FIGS. 6 to 10; Figure 16 shows a perspective view, a front view, a back view, a side view and a bottom view, respectively, of a third embodiment of a single-lobed filter bag for infusing a product according to the present invention; and Figures 17 to 20 are respectively shown A variation of the third embodiment of the single-lobe filter bag of Figures 12 to 16 a perspective view, a front view, a side view, and a bottom view of the section; Fig. 21 is a perspective view showing a variation of one of the filter bags of Figs. 12 to 16; and Figs. 22 to 26 respectively show a single flap of a fourth embodiment. A perspective view, a front view, a side view, a back view, and a top view of the filter bag; and FIGS. 27 to 31 are perspective views, a front view, a side view, and a back of a modification of the filter bag embodiment of FIGS. 22 to 26, respectively. View and top view.

Detailed description of the preferred embodiment

Referring to the drawings, particularly Figures 1, 6, 12 and 17, the single-lobed or single-chamber filter bag is used for soaking products such as tea, coffee, chamomile or the like.

The filter bag 1 as a whole mainly comprises a filter material of length 2, which forms a chamber 3 for accommodating an appropriate amount of the soaking product 4. The shape of the filter material of length 2 having a quadrilateral shape is defined by the following.

A first closed top end 5 is formed by a first joint portion S1 between the first ends of the lengths 2; a second closed bottom end 7; the two side edges 8, 9 are connected to the length 2 First and second ends 5 and 7.

In the filter bag 1, the two sides 8, 9 connecting the first and second end edges 5 and 7 are at least partially folded to form a fold toward the inner side of the chamber 3; The second bottom end 7 of the filter bag 1 is closed by a second joint S2 which is designed to form a stiff flat bottom surface 11 of the filter bag 1 to define a solid foundation with a triangular shape A cross section for supporting the filter bag 1.

Please refer to Figures 1 to 4 and Figures 12 to 21 in more detail. In the second embodiment of the filter bag 1, the second end 7 includes two second end edges 7a and 7b which are folded up and down each other and along the first The bottom end 7 is joined to directly define the support bottom surface 11.

In a second embodiment (see Figures 6 to 11), the second end 7 comprises two second end edges 7a, 7b which are folded over each other and at the bottom ends 8a, 8b and 9a of the two sides 8 and 9. And 9b are joined to obtain a continuous bottom surface 11 defining the base of the bottom support.

More specifically, in the first embodiment shown in FIGS. 1 to 4, the ends of the second end edges 7a and 7b which are closer to the sides 8 and 9 are partially folded toward the cavity. The interior of the chamber 3 is formed in an oblique shape and will be flattened against the corresponding region of the other end edge 7a or 7b, and the stiffened support substrate 11 is created at the second end 7.

In a third embodiment (see Figures 12 to 16), the second end edges 7a and 7b will form a central extension of the second bottom end 7. The two second end edges 7a and 7b are relatively folded and joined to each other, and a lug 12 is formed to protrude from the support bottom surface 11, which is elastically conformably folded on the bottom surface 11 to increase its stiffness.

Alternatively, the lug 12 can be folded and firmly joined to the support bottom surface 11 by a sealing portion S4 to form a large and stiff longitudinal region (see Figures 17 to 20).

In the second embodiment shown in Figures 6 to 10, the two ends of the two end edges 7a and 7b are folded toward the first end 5 and placed on the corresponding end of the other end edge 7a or 7b. And at the corresponding bottom ends 8a, 8b and 9a, 9b of the connecting sides 8 and 9 (formerly open) of the length 2, a beveled shape is formed.

The respective ends of the second end edges 7a and 7b are joined to each other by a sealing portion S2 at the corresponding bottom regions of the connecting sides 8 and 9; this causes a stiffened side region of the length 2, and The closed support bottom surface 11 of the filter bag 1 forms a wider support shoulder.

In this particular example, the sealing portion S2 is simultaneously formed on approximately the central region of each of the sides 8, 9 and is also used to engage the otherwise open sides to form a folded chamber. 3 inside configuration.

In addition to the above, the filter bag 1 can also be provided with a tether 13 on the length 2 by sealing one end of the bag body 2 of the length 2 and sealing the other end to a label 14 To engage, the label can be removed by the length 2 filter material, which is suitable for holding the filter bag 1 properly during soaking.

Regarding other manufacturing aspects of the filter bag 1, the filter material of length 2 may be made of filter paper or biodegradable material (for example, unrestricted corn starch) or a non-biodegradable plastic material (such as polyethylene). Composition.

The joint portion of the length 2 of the filter material may include a first and a second heat seal portion S1 and S2 which are made by heat sealing.

Alternatively, the two joints may comprise one of the first and second seals S1 and S2 caused by the use of a suitable glue.

In still another variation, the first and second ultrasonic sealing portions S1 and S2 may be included on the two joint portions of the length 2.

According to a possible variant applicable to all of the above three embodiments, the two corners 5a, 5b of the first tip 5 of the length 2 are symmetrically beveled at an angle a (see Figures 5, 11 and 21). .

The tubular length 2 has an initially open tubular shape and, at least in the first two embodiments described above, will have a central seam for closing the tubular system consisting of a third joint or seal S3.

Figures 22 to 26 and 27 to 31 show two alternative embodiments of the filter bag 1, the structural design of which is in accordance with the embodiment shown in Figures 12 to 16.

In this example, the length 2 of the filter material is provided with a tether 13 having a knot A1 joined to the length 2 itself at one end and joined to the tag 14 at the other end by a knot A2. This length 2 will be wrapped around and also around the elastically compliant lug 12 protruding from the support bottom surface 11.

The label 14 can also be removably attached to the filter material of length 2, for example by sealing.

To maintain the positioning of the label 14 over the length 2, the label 14 can be provided with a slit 14f at its top for insertion of the end P of the tether 13 tied to the length 2 of the filter material. The label is fixed against the length 2.

In both solutions, that is, whether supported by the tether 13 or attached to the length 2, the tag 14 is positioned at the top end 5 of the length 2 (where the closed joint S1 is provided) and partially The length 2 body is convex.

The main difference between the filter bags 1 shown in Figs. 27 to 31 is that the corners 5a, 5b of the first top end 5 of the length 2 are symmetrically beveled at an angle ?.

Accordingly, a filter bag made as described above can achieve the aforementioned purpose, because the connecting side and the bottom edge closing the length of the filter material impart a special shape to create a flat stiff base, which can provide: The chamber 3 not only has a fixed volume before use, but can properly and stably accommodate the product, and can make the filter bag stand on a support surface, but can also accommodate the product in the cavity when immersed. The interior moves and stretches optimally, so you can guarantee a perfect quality soaking solution and less soaking time.

The above described invention is particularly suitable for industrial use and can be modified in several ways without departing from the scope of the inventive concept. Moreover, all the details of the invention can be replaced by technical equivalents.

1. . . Filter bag

2. . . Filter material length

3. . . Chamber

4. . . Soaking product

5. . . First closed top

5a, 5b. . . Corner

7. . . Second closed bottom

7a, 7b. . . Second end edge

8,9. . . Side

11. . . Bottom

12. . . Lop

13. . . Line

14. . . label

14f. . . Gap

A1, A2. . . Knot

S1. . . First joint

S2. . . Second joint

S4, S4. . . Sealing part

P. . . Ends

1 to 4 respectively show a perspective view, a front view, a side view, a bottom view and the like of a first embodiment of a single-lobed filter bag for infusing a product according to the present invention; and FIG. 5 is a view of the first to fourth figures Front view of a variation of one of the filter bags; Figures 6 to 10 respectively show a perspective view, a front view, a right side view, a left side view and a bottom of a second embodiment of a single-lobed filter bag for infusing a product according to the present invention Figure 11 is a perspective view of a variation of one of the filter bags of Figures 6 to 10; and Figures 12 to 16 respectively show a third embodiment of a single-lobed filter bag for infusing products according to the present invention. A perspective view, a front view, a back view, a side view, a bottom view, and the like; and FIGS. 17 to 20 are respectively a perspective view, a front view, and a side view showing details of a modification of the third embodiment of the single-lobed filter bag of FIGS. 12 to 16. View, bottom view, etc.; Fig. 21 is a perspective view showing a variation of one of the filter bags of Figs. 12 to 16; and Figs. 22 to 26 are respectively a perspective view, a front view, and a front view of a single-lobe filter bag of a fourth embodiment. Side view, back view, top view, etc.; Figures 27 to 31 show one of the filter bag embodiments of Figures 22 to 26, respectively A perspective view, a front view, a side view, a back view, and a top view of a variation.

1. . . Filter bag

2. . . Filter material length

3. . . Chamber

5. . . First closed top

7. . . Second closed bottom

7a, 7b. . . Second end edge

8,9. . . Side

11. . . Bottom

13. . . Line

14. . . label

S1. . . First joint

S2. . . Second joint

Claims (16)

A single-lobed filter bag for a soaking product, the filter bag comprising a length of filter material, which can form a chamber containing a suitable amount of the soaking product; the length comprising at least: a first closed top end Formed by a first joint between the two first end edges of the length; a second closed bottom end; two side edges connecting the first end and the second end of the length; The two sides of the first and second ends are at least partially folded over each other to form a fold toward the inside of the chamber; wherein the second bottom end of the filter bag is designed to form the A second joint portion of the stiffened flat bottom surface of the filter bag is closed to define a solid foundation having a substantially triangular cross section for supporting the filter bag, the second end having a central portion defining the second bottom end Two second end edges of the extension portion; the second end edges are positioned facing each other and joined to form a lug, which is convexly and elastically conformed by the bottom support base, and can be folded The bottom is based on increasing its stiffness. A filter bag according to claim 1, wherein the yaw is folded and firmly joined to the bottom support base by a seal to form a larger stiffened longitudinal region. A single-lobed filter bag for an infusion product, the filter bag comprising a length of filter material that forms a chamber containing a suitable amount of the infusion product; the length comprising at least: a first closed top end formed by a first joint between the two first end edges of the length; a second closed bottom end; and two side edges connecting the first end of the length And the second end; the two side edges connecting the first and second ends are at least partially folded over each other to form a fold toward the inner side of the chamber; characterized by the second portion of the filter bag The bottom end is closed by a second joint designed to form a stiff flat bottom surface of the filter bag, the cymbal defining a solid base having a substantially triangular cross section for supporting the filter bag, the second end Having two second end edges, and the ends of the two second end edges that are closer to the sides are folded toward the inside of the chamber to form a beveled shape and are flattened at the other end On the corresponding area of the rim, the crucible causes the stiff support base at the second end. A single-lobed filter bag for an infusion product, the filter bag comprising a length of filter material, which can form a chamber containing an appropriate amount of the infusion product; the length comprising at least: a first closed top end, Forming a first joint between the two first end edges of the length; a second closed bottom end; two side edges connecting the first end and the second end of the length; The two sides of the first and second ends are at least partially folded over each other to form a fold toward the inside of the chamber; wherein the second bottom end of the filter bag is designed Forming the filter bag a second flat joint of a stiff flat bottom surface defining a solid foundation having a substantially triangular cross section for supporting the filter bag, the second end having two second end edges, and the second The ends of each of the second end edges are folded toward the first end, the first end being disposed on the respective end of the other end edge and at the respective bottom end of the connecting side of the length Forming a beveled shape; the opposite ends of the second end edges are joined to each other by a sealing portion and individual bottom ends of the connecting sides, thereby causing one of the lengths to be stiff The side region, and the closed bottom support base of the filter bag, forms a wider support shoulder. The filter bag of claim 1, characterized in that it comprises a line of wires on the length, one end of the line is sealed to the length itself, and the other end is sealed to a label, the label is Further, the filter material of the length is removably coupled. The filter bag of claim 1, wherein the length of the filter material is made of filter paper. A filter bag according to the first aspect of the invention is characterized in that the filter material of the length is made of a biodegradable material. The filter bag of claim 1 is characterized in that the filter material of the length is made of a non-biodegradable plastic material. A filter bag according to claim 1, wherein the joint portion of the length of the filter material is defined by a first seal portion and a second seal portion which are formed by heat sealing. The filter bag of claim 1 is characterized in that the length is The joint on the filter material is defined by a first seal and a second seal made of a glue. A filter bag according to claim 1, wherein the joint portion of the length of the filter material is defined by one of the first seal portion and the second seal portion which are manufactured by ultrasonic sealing. The filter bag of claim 1, wherein the corner of the first tip of the filter material of the length is symmetrically beveled according to an angle. The filter bag of claim 1, wherein the tubular length has an initially open tubular shape with a central joint defining a tubular body and a third seal. The filter bag of claim 1, characterized in that it comprises a tether on the length, the tether is joined to the length itself by a knot at one end and joined to the other by a knot at the other end. Label, and the line will wrap around the length. The filter bag of claim 1, characterized in that it comprises a tether on the length, the tether is joined to the length itself by a knot at one end and joined to the other by a knot at the other end. A label, which in turn is removably coupled to the length, and the line will wrap around the length. The filter bag of claim 13 is characterized in that the label has a slit at the top thereof, which is slidably attached to one end of the thread of the filter material of the length, so that the label Fixed to the length.