JP6457197B2 - Simple filter - Google Patents

Description

  The present invention relates to a simple filter such as disposable coffee.

A so-called disposable simple filter that is used once is widely used mainly as a filter for extracting regular coffee, and various types of filters are currently proposed and put into practical use.
This simple filter (hereinafter referred to as “filter”) has a basic structure of a filter bag, usually a non-woven fabric, a bag body made of plastic or paper filter, and the bag body. It is made from a support that is usually molded from cardboard that is attached to and supported by a container such as a coffee cup. For example, in a filter for coffee, a filter bag body is filled with a required amount of coffee powder (extracted substance) in advance, and the upper part of the bag body is cut off before use. In this state, the support is used to be hooked and fixed to the edge of a container such as a coffee cup. After setting in this manner, hot water is poured from the opening of the opened bag body to extract the coffee components inside the bag, and the extracted coffee liquid (extracted liquid) is received in the container while being filtered through the bag body. You can drink it as it is.

  When this filter is used as a coffee filter as described above, regular coffee can be easily obtained by pouring hot water, and the amount of coffee powder enclosed in the bag is determined in advance. The concentration of the liquid is determined to be substantially constant, and the coffee filter itself can be disposed of while leaving the coffee powder in the bag after use. It has come to be used.

  This filter is composed of a bag body and a support and is structurally simple. However, since it is disposable, further material saving is required. Among them, further improvements and proposals have been made in order to obtain a certain strength and to enable safe use and to obtain a stable and efficient extraction effect.

  Currently, one of the most simplified ones has been proposed a filter having a structure in which a support body is directly attached to the front and back surfaces of a filter bag body, and the bag body is supported on a cup container by the front and back support bodies. Widely put into practical use. Examples thereof include a filter described in Patent Document 1 described later and a filter described in Patent Document 2.

  The conventional filter described in Patent Documents 1 and 2 formed by directly fixing the support to the bag body is first opened by cutting off the upper end portion of the bag body, etc. Then, in preparation for setting the container, the front and rear support bodies are stretched in the front-rear direction to match the diameter of the container, and in this state, the locking piece provided on the support body is hooked on the edge of the container and set. It has become.

  This conventional type of filter has a support piece (holding member, support sheet) provided on the front and rear surfaces of the bag body, and a locking piece (holding locking piece) provided at the tip of the bag body. The bag body that was opened and placed in advance prior to the stretching operation was opened widely using the stretching, and was maintained. In a simple structure, the cup can be set, and in this state, hot water can be poured, and it can be used as it is.

  However, the conventional filter according to this proposal has a structure in which the support can be attached to the cup by stretching the support for use, so if the user extends the support, It is said that it will be possible to set it as it is, without expecting to open the bag body without opening the bag body, simply pulling the support strongly and saying that it will damage the support There was a problem.

  This filter needs not only to stretch the support but also to pre-open the bag body by pre-opening as a pre-treatment as described above, and it can only be brought into the set after opening. Nevertheless, there were many cases where this work was omitted and brought into the set.

  Especially, in the case of this filter, there is something that makes it intuitive that the bag body can be automatically opened if it is stretched from the structure of the support body in use, so this misunderstanding will limit the structure of the support body. There were times when it was stretched beyond force. For this reason, it means that the support made of cardboard or the like is torn off, that is, as a result, it is damaged and rendered unusable.

Of course, there is a filter that does not require an opening operation with the opening opened in advance, but at present, the type of filter that contains the extraction material such as coffee in advance is widely used. It is common to seal the opening of the bag body from the top to prevent the coffee powder from spilling out.
Therefore, in such a case, as a matter of course, the opening operation must be performed prior to the setting operation with respect to the cup. May be set to work. As a result, since the support body is pulled out without opening and expanding the bag body, an excessive force is applied to the support body beyond the limit of the material, resulting in a problem that it will break as a result. is there.

  Therefore, in view of the above-mentioned situation, the present applicant is able to open the opening of the sealed bag body at the same time as the support for setting the filter is stretched in order to solve the above problem. As a result, the opening of the bag body can be carried out without damaging the support body. He succeeded in developing a filter that made it possible. The filter described in Patent Document 3 is that.

Japanese Patent Application Laid-Open No. 2004-230143. Japanese Patent Application Laid-Open No. 2010-110335. JP2012-179265A.

  The filter described in Patent Document 3 includes locking pieces 10 and 10 that are hooked on the edge of the cup 4 with respect to the support bodies 3 and 3 that are fastened to the front and rear surface portions 2a and 2b of the bag body 2 made of a filter. The intermediate portions of the bridging pieces 8 and 8 in which the hanging pieces 9 and 9 connected thereto are bonded to the upper and lower ends 8a and 8b and the intermediate portions 8c and 8c are not bonded to the surface portions 2a and 2b. 8c and 8c are connected. Thus, when the front and rear locking pieces 10, 10 are pulled out, the suspension pieces 9, 9 are pulled out by the pulling out, and at the same time, the intermediate portions 8c, 8c of the bridging pieces 8, 8 connected thereto. The upper edge portion of the bridging piece is pulled by the upper end portions 8a, 8a of the bridging piece, and the opening portion 7 is forcibly opened by this tension. At the same time, the lower end portions 8b, 8b of the bridging pieces 8, 8 are pulled back and forth at the center portion of the body portion 18 of the bag body 2 to expand the interior of the bag and set it to a container such as a coffee cup 4 or the like. It is designed to be provided.

  Since the filter described in Patent Document 3 has a structure in which the opening of the bag body is peeled off in conjunction with pulling out the support, the support is stretched and the bag for setting. The opening of the main body can be opened at the same time, so that the work at the time of use can be performed quickly and, at the same time, the bag body is linked with the extension of the support body above all. Since the opening can be opened, there is no excessive pulling out of the support as in the conventional filter (filters described in Patent Documents 1 and 2). It can be solved beforehand.

However, one problem with the filter of Patent Document 3 is that the opening of the bag body is simultaneously opened in conjunction with the withdrawal of the support, and therefore the cover sealed inside the bag body is sometimes opened suddenly. The extract (coffee powder) may jump out of the opening.
In normal use, since the entire filter is simply formed, the support is carefully pulled out to perform the opening operation, but sometimes, for example, the joint that seals the opening does not peel smoothly. At this time, the elastic restoring force of the support body increases as it stretches, and when this joint continues to rise, the joint part peels off all at once and the opening part opens suddenly. The bottom of the main body jumped up and pushed out from the opening that opened the coffee powder.
At the same time, since the air suddenly enters the inside of the bag body with the sudden opening of the opening, the coffee powder is sprinkled by the intrusion of the air, and from the opened opening There was a problem that said it would blow out.

  This sudden opening of the opening is due to the opening of the filter using the pulling of the support, and the support is pulled to cause each piece to squeeze out from a flat folded state. At this time, each piece is warped and gradually accumulates an elastic repulsive force, so when it is pulled out strongly, it will be tense strongly, and when opening of the opening starts in this state, it will open at once, and the bottom of the bag will be It will cause a jump or a sudden air intrusion.

  This jumping out of the coffee powder does not disable the use of the filter, but it will not only contaminate the surroundings, but above all, a certain amount of coffee powder is enclosed to ensure a predetermined concentration. On the other hand, the jumping out of the coffee powder reduces its capacity, and as a result, lowers the coffee extraction concentration. Therefore, eliminating this spilling is strongly required to improve the reliability of the product to be provided.

  Accordingly, an object of the present invention is to provide a filter having a structure in which the opening portion of the bag body is peeled off and opened at the opening portion of the bag body by pulling out the support body in the front-rear direction. The purpose of this is to appropriately control the unsealing operation, thereby preventing the bottom of the bag body from jumping up and abrupt inflow of air into the bag so as to prevent the extraction of the extracted material such as coffee powder.

  As disclosed in Patent Documents 1 and 2, the filter having a structure in which the support body before and after fixing to the front and rear surface portions of the bag body in use is stretched in the front-rear direction and hooked to the edge of the cup is supported. When the body is stretched from a flat state, it is stretched while utilizing the elasticity of a material such as cardboard. For this reason, as described above, the restoring force accumulates on the support as it is stretched.

Among them, the filter according to Patent Document 3 uses the restoring force accumulated in the support body in combination with the stretching operation when opening the opening of the bag body, and the synthesis thereof. Thus, the joint of the opening is peeled off and opened. Therefore, this restoring force is always accumulated on the support when opened.
For this reason, when the joint is peeled off, it will be shocked by the release of the restoring force to a greater or lesser extent, and the extract will be exposed inside the bag body, but the joint has a large restoring force. If it peels off smoothly at the stage where it is not accumulated and the opening of the opening is promoted, the occurrence of an impact at the time of opening will be avoided, and the extraction of the extract will be prevented beforehand.

  The present applicant pays attention to this, and when opening the opening portion of the bag body, the joint portion that seals the opening portion is smoothly guided and the peeling from the position where the extraction of the extractable material can be most suppressed is induced. As a result, it was found that the opening could be stably opened, and the target development was successful.

  In order to achieve the above object, the present invention provides a simple filter having a structure in which an opening of a bag body is opened by pulling out the support body before and after being fixed to the front and back surfaces of the bag body, and stretching the support body. The joint that seals the opening is provided over almost the entire width along the width direction of the opening, and the strong joint that weakens the strength of the joint in the joint and the weak joint When the substrate is pulled by the support, the peeling starts from the fragile joint and proceeds to the strong joint, thereby opening the opening gradually from a part. The whole part was prevented from being opened at once, and the material to be extracted was prevented from popping out due to sudden opening.

  The present invention will be described in more detail. A filter bag main body provided with an opening serving as a pouring port between the upper edge portions of the front and rear side portions that can be folded into a contact surface, and affixed to the front and rear surface portions. A sheet support that supports the bag main body by fixing and hanging on the opening edge of the cup container, the bag main body is provided with an extended hook part that is folded inward on both sides of the front and rear surface parts, On the other hand, the front and back surface portions are fixed by adhering and fixing the upper end portion to the central portion of the upper edge portion of the front and rear surface portions facing the opening of the bag body and the lower end portion to the central portion of the body portion of the bag body. A bridge piece vertically disposed along the center of the bridge piece, a suspension piece extending upward from both side edges of the intermediate portion of the length of the bridge piece, and a free upper end of the suspension piece. And a latching locking piece extending downward in a folded manner along the outer edge of the Then, when not in use, the pieces constituting the support are aligned in a flat shape and are brought close to the front and rear surface portions of the bag body, while the latching locking piece is pulled away from the front and rear surface portions when in use. Pulling out in the direction, pulling out the hanging piece with this work, and at the same time, raise the middle part of the bridging piece connected to it, and by this operation, through the upper and lower ends of the bridging piece, the front and rear of the bag body The center portion of the upper edge portion of the surface portion and the central portion of the body portion are pulled out in the front-rear direction to open the opening portion of the bag body, and at the same time, the body portion of the bag body portion is expanded forward and backward In the simplified filter, the bag body is weakly bonded to a central portion where the upper end portion of the bridging piece is fixed between the upper edge portions of the front and rear surface portions along the opening width direction of the opening portion. To be part The left and right portions sandwiching the central portion are joined to each other in such a manner that the front and rear surface portions can be peeled apart with a strength difference in joining, and the opening is sealed by forming this joining portion. Thus, the present invention provides a simple filter for coffee or the like in which an extract is sealed inside the bag body.

  To summarize the present invention, in forming a joint along the upper edge of the front and rear surfaces facing the opening formed in the upper portion of the bag body, the joint is formed at the central portion of the upper edge. It is formed in a fragile joint that is easy to peel off, and a strong joint that is difficult to peel off at the left and right parts that deviate from this central part. Thus, a simple filter in which an extract is sealed inside the bag body by this joining is provided.

  In the present invention from the above configuration, when the bridging piece is pulled out by pulling out the support body, the upper end portion of the bridging piece is first pulled, and the upper end portion of the bag body is attached accordingly. The pulling force acts on the central portion of the upper edge portion of the front and rear surface portions. For this reason, the pulling force acts on the joint portion that is weakly joined at the central portion of the upper edge portion, and the weak joint state of this portion is utilized to easily peel off, and from here the opening portion Opening will begin.

  The peeling from the weak joint portion causes the opening width of the portion to expand back and forth by further pulling of the support, and further, this expansion is one end of the strong joint adjacent to the weak joint portion. It spreads to the part and starts to peel off the part, and finally reaches the entire part and finally peels off the entire joint part of the opening, thereby opening the opening.

At this time, since the pulling of the support is concentrated on the fragile joint directly through the upper end portion of the bridging piece, the entire joint is peeled off at once. This part is limited and limited, and in addition to this, since the part is in a state of being easily peeled off, the peeling easily proceeds, and an unsealing mark is made here.
In this way, after the cut is made, the pulling continues, and then the peeling progresses to the part to be firmly joined with the peeling of the fragile joint, and the part is peeled off to open the opening. The whole part will be opened.
That is, the opening operation here suppresses a sudden opening by gradually opening the opening step by step, and finally opens the entire opening.

  The opening that is opened in this way gradually opens in stages, and finally the whole is opened, so that when the support is pulled, it will not be opened all at once. As a result, there is no impact when opening, the bottom of the bag body is bounced up, or the extract is rolled up due to sudden air intake and the extract is scattered from the opening. It will be prevented beforehand.

  Further, the present invention is the above-described simple filter for coffee or the like, wherein the bag body is overlapped by folding the extended brim portion on the left and right side edge portions of the opening, and the overlapping portion is made strong. Provided is a simple filter for coffee or the like, characterized in that the opening is peelably joined and sealed with the center part avoiding the overlapping part as a weak joint part while being used as a joint part It is.

The present invention is to form an overlapped portion by folding an extended hook provided on the left and right side edge portions of the bag main body into the opening of the bag main body, and join the extended extended hook to the contact surface. Thus, a strong joint is formed here.
For example, when the front and back surface portions of the bag body are crushed from the front and back and bonded by overheat, and the bonding is performed using this pressure force, the overlapping portion of the extended hook portion is more than the center portion of the opening where the front and rear surface portions are joined together. Since the joint is strongly joined, the center portion of the opening automatically forms a weak joint. Therefore, if the extended collar part folded in the junction part is incorporated and joined, the junction part which gave the strength difference reliably can be formed.

  Further, the present invention is the above-described simple filter for coffee or the like, wherein the upper end portion of the bridging piece of the support is fixed to the upper end portion of the front and rear surface portions of the bag body along the upper edge portion of the bag body over substantially the entire width. A piece is extended and fixed to the upper edge integrally, and the upper fixing piece is provided so as to cover the opening portion of the bag body along the joint that can be peeled off. It is providing the simple filter of coffee etc. characterized by becoming.

  According to the present invention, an upper fixing piece extending from the upper end portion of the bridging piece is fixedly fixed over substantially the entire width along the upper edge portion of the front and rear surface portions of the bag body. As a result, the tensile force of the support acting on the upper end of the bridging piece is transmitted from the central part of the front and rear surface parts to which the upper end is attached to the left and right parts via the upper fixing piece. . As a result, the separation of the joint starting from the fragile joint reaches the left and right strong joints by pulling the upper fixing piece, and this part is peeled off. Will be opened.

  Further, the present invention is characterized in that in the simple filter such as coffee described above, the strong and weak joints sealing between the upper edge portions of the front and rear surface portions of the bag body are arranged in a straight line. It is to provide a simple filter such as coffee.

  According to the present invention, the joints for closing the opening of the bag body are arranged in a straight line, and the brittle joint is peeled off by receiving a pull-out of the cross-linked piece fixed to the center part of the front and rear surface parts. When the bonding is started, if a strong joint portion is provided in a line and adjacent to this, peeling is continued, and the entire joint portion is smoothly opened. For this reason, when shifting from a fragile joint to a strong joint during the opening operation, the drop can be reduced, and the impact at the time of opening, particularly at the progress of opening, can be kept small.

  The present invention also provides a simple filter for coffee or the like, wherein the strong and weak joints are discontinuously or continuously arranged along a straight line. There is.

  The present invention provides a joint that closes the opening, while the entire joint is provided along a straight line, while the strong and weak joints provided here are each provided in a discontinuous state, that is, in a jump, or continuously. It shows that there are cases where it is provided. Even in the case of discontinuity, it is possible to obtain a sufficient effect of sealing the opening, and since it is spliced at the time of opening, it can be opened smoothly with good overall peelability.

  Now, the bag body formed from the filter as a raw material can use a nonwoven fabric generally used in this kind of filter, a paper or plastic filter, etc. In addition to this, it is appropriately selected according to the substance to be extracted and considering the transmittance.

On the other hand, for the support, a sheet-like material having the required rigidity and elasticity, such as cardboard, is suitable, and in forming, in a state where the pieces are continuous by punching according to the shape of each piece. If formed, the production efficiency can be increased.
In addition, since this support has different shapes and configurations of the respective pieces, the forming method of the support and support sheet shown in each of the above-mentioned patent documents (imagined from the form disclosed in the drawings) The method of punching and cutting out from a single sheet is advantageous as in (b).

Now, in using the filter of the present invention, it begins with picking out the latching locking piece of the support with a finger.
By pulling out the latching locking piece, the upper end portion of the hanging piece connected thereto is drawn out, and further, the intermediate portion of the bridging piece connected to the lower end portion of the hanging piece is drawn out. And the middle part of a bridge | crosslinking piece makes the floating state by this drawer | drawing-out, and this will pull out the upper end part, and the upper edge part of the bag main body fixed to this will be pulled. For this reason, the opening part of a bag main body will receive this tension | pulling directly, and will be open | released compulsorily.

  When the opening of the opening is opened, when the bridge piece is pulled, the center portion of the upper edge portion of the front and back surfaces of the bag body to which the upper end portion is fastened is pulled in the front-rear direction. For this reason, first, the pulling force acts on the joint part of this part, that is, the fragile joint part, and this is easily peeled off, and partial opening is achieved here. Further, after the fragile joint is opened by further pulling the support, the pull spreads to the left and right strong joints to peel off the joint, thereby gradually widening the opening width. Finally, the opening is fully opened.

  In opening the opening, that is, in the opening operation, the pulling force by pulling out the bridging piece is applied to the central part of the front and rear surface parts via the upper end part, and the weak joint part is located here. The peeling of the bond is easily started. Then, by starting the peeling, the strong joint provided adjacent thereto starts peeling from one end facing the peeled portion, and the strong joint is peeled off. It will be completed.

  In addition, in this opening operation, opening by peeling of the weak joint part of the central part will induce peeling of the next strong joint part, and at the beginning, the start is made smooth by easy peeling, And with this peeling as an opportunity, the next strong joint is peeled and the peeling is advanced from one end thereof, thereby opening the whole, and a smooth opening operation with very little impact is realized. Become.

Next, after the front and rear supports are pulled out in this way and this opening operation is performed, the latch pieces of each support are hooked on the edge of the container when it becomes suitable for the caliber of the cup container to be used. This completes the setting of the filter of the present invention.
The filter can be used in a stable state by latching the locking piece. And after that, by pouring hot water into the opening part opened by the said drawer | drawing-out of the said support body, coffee liquid is extracted, this can be stored in a container and it can drink as it is.

  The filter of the present invention is configured as described above, and when the bag body is opened by pulling out the support body, the joint for sealing the opening can be smoothly opened without giving a strong impact. Thus, it is possible to prevent the material to be extracted that has been suddenly opened and scattered, which has been a problem in a filter in which the opening of the bag body has been opened by pulling the seed support, from occurring.

  Of course, the filter of the present invention opens the opening of the bag body by pulling out the support, and the pulling piece can be fitted to the caliber of the cup container by this pulling out. There is an advantage that it can be performed conveniently and quickly.

It is a front view of the simple filter which concerns on this invention. It is the front view shown in the state which isolate | separated the bag main body and the support body which has a fixed piece. It is a perspective view which shows the state which opened the support body in preparation for use, and opened the opening part of the bag main body with this drawer. FIG. 2 is an enlarged longitudinal sectional view for explaining an extended state when a support body having a cross section taken along line AA in FIG. 1 is pulled out. It is a perspective view explaining the use condition which latched the simple filter which concerns on this invention on the cup container. It is a front view explaining the fixing position of the upper and lower part in the fixing piece of the support body with respect to a bag main body, and the fastening position of a reinforcement piece. It is the enlarged plan view which expanded the part in order to show the junction part which seals the opening part of a bag main body. It is the enlarged plan view in the middle of opening which peeled the junction part of the opening part of the bag main body shown in FIG. 7, and pulled out the support body in the front-back direction. FIG. 9 is an enlarged plan view for explaining a state in which the joint portion for sealing the opening of the bag body shown in FIG.

The accompanying drawings show an embodiment in which the simplified filter according to the present invention is implemented as a coffee filter. Hereinafter, the present invention will be described based on an embodiment shown in the drawings, and its features will be clarified.
In the drawings, reference numeral 1 is a coffee simple filter according to the present invention, 2 is a bag body of the filter 1, and 3 and 3 are the edges of a coffee cup 4 that serves as a container when used. It is a support that is supported by hanging.

The bag body 2 is formed into a bag shape using a filter made of a non-woven fabric of synthetic resin. Here, the front and rear surface portions 2a and 2b are formed by folding a vertically long rectangular filter piece in the middle of the length. The left and right side edge portions of the front and rear surface portions 2a and 2b are bonded together in a contact surface shape, and the bonded edge portions are folded inward to extend the extended flange portion between the front and rear surface portions 2a and 2b. 5 and 5 are provided.
The bag body 2 is configured so that the bag body can be folded into a flat shape by using the flange portions 5 and 5 while being expandable, and the bag body 2 can be expanded on the front and rear surface portions 2a and 2b. An opening 7 is formed between the edges 6 and 6.

  Here, the filter forming the bag body 2 is a synthetic resin filter capable of heat sealing. Furthermore, this filter is made to adhere to one side (inner surface side) of the filter with strong adhesiveness and the other surface (outer surface side) to correspond to bonding using a bonding means such as high frequency. A filter having a two-layer structure with weak adhesive properties and different adhesive strengths is selected. The front and rear surface portions 2a and 2b have the above strong adhesive filter layer inside the bag body 2 and the weak adhesive property outside. The bag body 2 is formed so that the filter layer is directed.

  For the above filter, more specifically, a layer made of polypropylene is arranged on the strong adhesive filter layer on the inner surface side, and a layer made of polyester is arranged on the weak adhesive filter layer on the outer surface side. The two-layer structure with both layers integrated is used.

  Although not shown here, in this embodiment, the upper edge portions 6 and 6 of the front and rear surface portions 2a and 2b are folded back to each other to form a reinforced overlapping portion along the inner periphery of the opening 7. Thus, when forming the joint portion described later, the outer filter layers having low adhesiveness are joined so that they face each other, and the opening portion 7 is sealed so that it can be easily opened. Yes.

On the other hand, the support 3 is formed by cutting out a thick paperboard having a required rigidity and a thick paperboard.
Here, as shown in FIGS. 1 and 2, a substantially rectangular paperboard is cut out to form the entire support 3 at one time. In this, the support 3 is a front and back surface portion of the bag body 2. The horizontal width is made the same as the length of the upper edge portions 6 and 6, and the vertical length is adjusted to the horizontal width so as to fit within 2a and 2b.

And the said bridge | crosslinking piece 8 is set | placed vertically in the center part of the support body 3, and the suspension pieces 9 and 9 are extended upward from the right and left side edge part of the substantially center part 8c of this bridge | crosslinking piece 8, and also this suspension The latching locking pieces 10 and 10 are extended downward along the outer edge from the respective upper ends of the installation pieces 9 and 9.
For this reason, here, the hanging pieces 9, 9 and the locking pieces 10, 10 are arranged so as to be symmetric with respect to the bridging piece 8, and are integrally formed on a piece of cardboard, Further, the latching locking pieces 10 and 10 are connected at their lower ends with a connecting piece 11 so that the entire shape of the locking pieces is U-shaped.

On the other hand, upper fixing pieces 12, 12 are extended in the left-right direction at the upper end 8a of the bridge piece 8 at the central portion, and are fastened along the upper edge portions 6, 6 of the front and rear surfaces. Further, the lower fixing piece 13 is similarly extended in the horizontal direction at the lower end portion 8b and fixed to the center portion of the front and rear surface portions 2a, 2b, so that the bridging piece 8 is connected to the upper and lower fixing pieces 12, 13 are fixed to the front and rear surface portions 2a and 2b.
For this reason, the bridge | crosslinking piece 8 can float the intermediate part freely from the surface of the surface parts 2a and 2b by the said attachment.
Here, the reinforcing pieces 14 and 14 are extended along the side edges of the bag body 3 downward from the left and right ends of the upper fixing pieces 12 and 12, and the locking pieces 10 and 10 are laterally moved. It surrounds from.

In this way, the support 3 in which the pieces are integrally formed in the cardboard has the adhesion positions 15, 16 shown by hatching the surfaces of the front and rear surface portions 2a, 2b of the bag body 2 in FIG. (In addition, in order to clarify the position of hatching, it is overlaid on the support body 8 for the sake of convenience.)
The bonding position 15 extends over a range including the upper end portion 8a of the bridging piece 8, the left and right upper fixing pieces 12 and 12, and the left and right reinforcing pieces 14 and 14, and the other bonding position 16 is a lower portion. It corresponds to the fixed piece 13, and the supports 3 and 3 are bonded and attached to the surface portions 2a and 2b according to their bonding positions.

  Further, the attachment of the support 3 will be described in more detail. As shown in the drawing, the bridging pieces 8 and 8 have upper end portions 8a and 8a at the upper edge portion 6 with respect to the front and rear surface portions 2a and 2b of the bag body 2. , 6, and upper fixing pieces 12, 12 extending from the upper end portion are integrally fastened along the upper edge portions 6, 6, and the reinforcing pieces 14 extending from both ends thereof, 14 is fastened and attached along the side edges of the respective surface portions, whereby the entire support 3 is attached so as to cover the upper half portions of the respective surface portions 2a and 2b.

  In this way, the bag body 2 with the supports 3 and 3 attached to the front and rear surface portions 2a and 2b, respectively, is previously filled with a required amount of coffee powder (usually a powder amount of about 8 to 10 g), and the opening 7 is formed. It is sealed by bonding or the like.

  FIG. 1, FIG. 2 and FIG. 7 explain this sealed state. As shown in FIGS. 1 and 2, the sealing shown here applies high pressure to the surfaces of the bag body 2 so as to cross the upper edge portions 6 and 6 of the front and rear surface portions 2 a and 2 b. It is assumed that the wires are joined in a single line. As a result, a joint 17 is formed, and the opening 7 of the bag body 2 is closed.

The joint portion 17 will be described in more detail. As shown in the figure, the joint portion 17 is formed in a thin strip shape having a width in the vertical direction, and both left and right end portions thereof are hooked on the extended flange portions 5 and 5. Sealing is performed over substantially the entire width of the opening 7.
Then, as shown in the enlarged view of FIG. 7, the joining range that is in the joining portion 17 and corresponds to the central portion of the upper edge portion 6 is a fragile joining portion 17a in which the joining state is easily peeled, and the left and right joining sandwiching this The strong joints 17b and 17b that are difficult to peel off are formed into two parts having a difference in joint strength in the joint 17 arranged on this line.
Furthermore, in this embodiment, the strong joints 17b and 17b are formed on the portions that hang over the extended flanges 5 and 5, and a weak joint is formed at the central portion of the upper edge 6 that is off the flanges. The part 17a is positioned.

The formation of the joint portions 17a and 17b with a difference in strength of the joint portion 17 can be easily performed by using the high-frequency joining method as described above in the embodiment.
In the case of this joining method, a range of the central portion along the upper edge portion 6 and the range extending to the left and right extension flange portions 5 and 5 following the upper edge portion 6 are successively pressed and joined. Therefore, it is possible to easily realize bonding with a difference in bonding strength.
In this case, however, selection of the filter thickness, melting temperature, superheat temperature of the heater of the bonding machine, pressing force, pressing time, and the like is required, but these selections are easy for a normal engineer. In particular, in addition to the thin filter used in this type of filter, as described above, the flanges 5 and 5 in which the joined portions are quadrupled by folding and the double portion of the central portion are combined. This is because it is possible to automatically add a difference in bonding strength from the difference in thickness generated here if the portions are joined together and bonded at the same time.

The filter 1 of the present invention configured as described above encloses coffee powder (not shown) in the bag body 2 and then folds it flat and stores it in a film packaging container having excellent confidentiality such as aluminum foil, Will be stored.
And, in use, after taking out from the packaging container, the front and rear support pieces 3 and 3 are pulled out from the both sides 2a and 2b of the bag body 2 in a flat state by pulling out the latching locking pieces 10 and 10, The coffee cup 4 is extended to the place that matches the caliber.
Here, since the locking pieces 10, 10 are connected by the connecting piece 11, the connecting piece 11 is picked and the support is pulled out.

When the hooking and locking pieces 10 and 10 are pulled out by pulling out the support bodies 3 and 3, the upper ends of the hanging pieces 9 and 9 are raised accordingly, and when the whole is pulled out, Along with this, the bridging piece 8 connected to the lower end portion thereof is pulled out.
Since the bridging piece 8 connects the lower ends of the suspension pieces 9 and 9 to the left and right side edges that contact the intermediate portion 8c of the length, the intermediate portion 8c is first pulled out by the pulling, The part will be lifted. Then, the upper end portion 8a and the lower end portion 8b are pulled out following the lifting operation by the drawer.

  FIG. 4 shows the state at this time. In this way, when the upper end portion 8a of the bridging piece 8 is pulled out in conjunction with the pulling out of the hanging pieces 9, 9, the pulling force is directly applied to the upper edge portion 6 of the bag body 2 to which it is fastened. Accordingly, this force acts from the front and back of the opening 7, and acts on the peeling of the joint 8 to open the opening 7.

  When the opening 7 is opened, the bridging piece 8 has the upper end portion 8a fixed to the central portion of the upper edge portion 6 of the bag body 2, so that the bridging piece 8 is pulled out to the middle portion. The power concentrates and this part is pulled out first. As a result, a force acts on the fragile joint 17a provided in the intermediate portion, and the portion is peeled off.

FIG. 8 shows a state in which a part of the opening 7, more precisely, the central part thereof is opened by the peeling of the fragile joint 17 a.
Note that, as described above, the fragile joint portion 17a is easily peeled off with a small force, so that it is easily peeled off by receiving the concentrated tension of the bridging piece 8, and an opening is formed here.

As shown in the drawing, the opening of the opening extends over the entire fragile joint portion 17a, and the entire portion is opened.
Further, if the pulling on the bridging piece 8 continues, the peeling force concentrates and acts on one end of the strong joints 17b, 17b adjacent to the peeled joint 17a. As a result, this strong Peeling starts from one end of the joint portion 17b, and as a result, peeling progresses to the entire joint portion 17b, and the opening 7 is opened to the fully open state.

  FIG. 9 shows a state in which the strong joint 17b provided on the flanges 5 and 5 is peeled off, and the opening of the entire opening 7 is advanced to be completely opened.

  When opening the opening 7 by pulling out the support pieces 3 and 3, the support pieces 3 and 3 are pulled through the bridge pieces 8 and 8 through the bridging pieces 8 and 8, and the upper edge portions 6 and 6 of the front and rear surface portions 2 and 2b, particularly the central portion thereof. In the filter 1 according to the present invention, even if a small pulling force is applied, the force can be concentrated on the central portion. It can be used for peeling, and at the same time, by providing a fragile joint 17b in this part, it is possible to easily start peeling by the first small peeling, and this part can be opened. ing.

In the present invention, the strong joints 17b and 17b are provided after the weak joint 17a. Therefore, the strong joints 17b and 17b are opened by opening the weak joint 17a. It can be easily guided to open the box. As a result, the opening 7 can be opened easily and smoothly, and at the same time, since such opening is realized, the opening 7 is suddenly opened, that is, the entire opening 7 is opened all at once. Such opening can be prevented.
Therefore, it is possible to eliminate the jumping of the bottom portion of the bag body 2 caused by the sudden opening, the hoisting due to the rapid intrusion of the air, etc. It can be eliminated.

  By the way, the upper fixing pieces 12, 12 extending from the upper end portion 8 a of the bridging piece 8 and fastened along the upper edge portions 6, 6 are the first of the upper edge portion 6 when the bridging piece 8 is pulled out. When the pulling force is applied to the central part, it is provided to function as a guide for opening by causing it to act on the left and right ends, that is, in conjunction with the strong joints 17b and 17b. In addition to the function of reinforcement, it is also used.

  In addition to the auxiliary function, the upper fixing pieces 12 and 12 are fixedly put on the joining portion 17, and this applies the pulling force of the bridging piece 8 over the entire joining portion 17. It acts directly, and suppresses the loss of acting force.

Now, the filter 1 of the present invention pulls out the front and rear supports 3, 3, opens the joint 17 of the opening 7 from its central portion, and peels and opens sequentially over the left and right flanges 5, 5. As shown in FIG. 3, when the whole is opened, the support members 3 and 3 are further extended, and when the edge of the coffee cup 4 is reached, the locking pieces 10 and 10 are hooked and set. Will be completed.
FIG. 5 shows the set completion state, and hot water is poured from the opened opening 7.

  As described above, the filter 1 of the present invention peels off the opening 7 of the bag body 2 that encloses an extractable substance such as coffee powder by pulling out the support 3 and the joint 17 that seals it. Thus, when opening, the opening is gradually opened from the central portion of the joint portion to suppress abrupt opening, so that the extractables can be effectively prevented from popping out and scattering due to the sudden opening.

  By the way, about the junction part 17 of the opening part 7, although it was set as the strip | belt-shaped junction part which narrowed the vertical width in the said embodiment, this widened the junction area of the whole junction part, dropped adhesive force, and was required as a whole. The bonding area of the bonding portion 17 may be arbitrarily selected according to the bonding method to be selected.

In addition, the joint 17 is provided at a position close to the upper edge 6 of the front and rear surface portions 2a and 2b so as to easily receive the pulling force of the support pieces 3 and 3 at the time of opening. Therefore, opening is smooth and easy. And at this time, it is desirable that the joint is formed in a straight line and over substantially the entire width of the opening 7, but in a discontinuous state as long as the extractable substance does not leak out, that is, It may be formed in a broken line shape.
In this case, the joining portion having the broken line shape does not prevent the joining portion from being formed across the weak joining portion 17a and the strong joining portion 17b.

  As mentioned above, although the filter of the present invention was explained about the filter of coffee, this filter can be used as a filter for tea leaves such as black tea and green tea, as well as for tea, green tea, etc. Needless to say, these are the objects of the practice of the present invention.

DESCRIPTION OF SYMBOLS 1 Simple type filter which concerns on this invention 2 Bag main body 2a, 2b Surface part before and after forming a bag main body 3 Support body 4 Coffee cup used as a container 5 Expansion hook part provided in the side part of a bag main body 6 Front and rear of a bag main body Upper edge portion of surface portion 7 Opening portion of bag body 8 Cross-linked piece of support body 8a Upper end portion of cross-linked piece 8b Lower end portion of cross-linked piece 8c Intermediate portion of length of cross-linked piece 9 Suspension piece of support 10 Hook of support Stopping piece
DESCRIPTION OF SYMBOLS 11 Connection piece which connects the front-end | tip parts of latching latching piece 12 Upper fixed piece extended from the upper edge part of bridge | crosslinking piece right and left 13 Lower fixed piece provided in the lower end part of bridge | crosslinking piece 14 Reinforcement piece 15, 16 Bag main body Fastening range to fasten and fix the support piece to the front and back surface parts 17 Joint part sealing the opening 17a Weak joint part in the joint part 17b Strong joint part in the joint part 18 Bag body Trunk

Claims (2)

A bag body made of a filter that provides an opening serving as a pouring port between the upper edge portions of the front and rear surface portions that can be folded into a contact surface, and the opening edge of the cup container that is attached and fixed to the surface of the front and rear surface portions. A sheet support for supporting the bag main body by hooking to a portion, the bag main body having an extended hook portion that is folded inward on both sides of the front and rear surface portions, while the support is the bag main body The upper end portion of the front and rear surface portions facing the opening of the bag is fixed to the center portion of the upper and lower ends, and the lower end portion is fixed to the central portion of the trunk portion of the bag body, and vertically fixed along the center portion of the front and rear surface portions. A bridging piece to be arranged, a hanging piece extending upward from both side edges of the intermediate part of the length of the bridging piece, and folding back from the free upper end of the hanging piece along its outer edge And a latching locking piece extending downward in a shape, and when not in use The pieces constituting the holding body are arranged in a plane and are brought close to the front and rear surface portions of the bag body, while the latching locking pieces are pulled away from the front and rear surface portions in use in use. The suspension piece is pulled out with it, and at the same time, an intermediate portion of the bridge piece connected to the suspension piece is caused, and by this operation, the middle portion of the upper edge portion of the front and rear surfaces of the bag body through the upper and lower ends of the bridge piece In the simple filter such as coffee, the center portion of the bag body is pulled out in the front-rear pulling direction to open the opening of the bag main body, and at the same time the body of the bag main body is expanded forward and backward.
The bag body is a fragile joint part that is easily peeled off by the drawer at the center part where the upper end part of the bridging piece is fixed between the upper edge parts of the front and rear surface parts along the opening width direction of the opening part. In addition, the left and right side edges sandwiching the central part are joined so as to be a strong joined part that does not easily peel off with respect to the overlapped part by folding the extended flange part facing the side edge part. A simple filtration of coffee or the like in which the surface portions are joined to each other with a difference in strength, and the opening is sealed by this joining so as to enclose the extractable substance inside the bag body. vessel. In simplified filter coffee or the like according to claim 1, the Wataru Ru upper fixing piece to the substantially entire width along the upper edge of the front and rear faces of the bag body the upper end of the cross piece of the support to extend, and characterized in that on-site I along the joint and integrally fixed to the upper fixing piece over the weak joint and firm joining portion of the joining portion for sealing the opening Simple filter for coffee etc.

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