JPS6340737B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a holder, and more specifically, a holder for storing a self-supporting pouch, filling the contents, heat-sealing the opening, etc. Regarding the holder to be transported.

(Prior Art) A self-supporting pouch 1 (hereinafter referred to as a pouch) is usually made by heat-sealing both side edges of flexible body wall portions 1a facing each other to form side edge heat-sealed portions, as shown in FIG. 1a ₁ is formed, and the bottom part 1b (1b ₁ indicates the bent part) which is further folded in half is heat-sealed to the inner surface of the lower end of the trunk wall part 1a to form the bottom heat-sealed part 1c (bottom heat-sealed part 1c). The boundary _1c1 of the portion 1c is made in a reverse arched manner.

In the manufactured state, the pouch 1 has a flat shape with the body walls 1a in contact with each other and the body wall 1a and the bottom 1b. Bottom 1 as shown in
After expanding until the bent part 1b ₁ of b almost disappears and the bottom part 1b becomes almost curved, the contents are filled,
For example, according to the method proposed by the present inventors in Japanese Patent Application No. 56-138600, the opening 1d is closed using opposing grip belts and grip rolls, and the belt is stretched straight by pulling it in the width direction. Alternatively, the stretched opening 1d is heat-sealed using a die-roll sealer or the like. After that, if the contents are fresh drinks or the like and are filled hot, they are cooled with water in a cooling device.

In order to convey the pouch 1 through each of these processes, conventionally a gripper method has been adopted in which the pouch 1 is mainly gripped by the edges 1e on both sides near the mouth 1d. Because there is
It is unsuitable for high-speed operations (for example, filling and heat sealing more than 150 pieces per minute). To solve this problem, a method has recently been proposed in which the pouches are stored in a box-shaped holder and transported by a belt conveyor.

However, the conventional structure of the holder has the following problems and is not satisfactory.

(a) When the pouch is expanded and filled using the turret method, the introduction of the holder into the turret and its removal from the turret are usually carried out using a worm wheel 6 of the type described later. In order to engage the holders, it is necessary to leave some space between the front and rear holders. Therefore, when the holders accumulate in front of the worm wheel and come into contact with each other, as occurs especially when a turret is introduced, it becomes difficult for the worm wheel to transport the holders.

(b) It is difficult to store the pouch in the holder so that the center lines of the holder and the pouch in the traveling direction (the pouch is transported in the width direction, that is, in the direction in which the mouth portion 1d extends) are aligned, that is, it is difficult to center the pouch. be. If the center lines are misaligned, that is, if the centering is poor, the pouch will be inserted at an angle between the opposing grip belts during the mouth stretching process, resulting in wrinkles at the pouch mouth after stretching. Then, pores are generated in the wrinkled portion after heat sealing, and the sealing performance is likely to be impaired.

(c) When trying to take out the center ring described above, if the dimensions and shape of the holder are selected so that the inner peripheral surface of the holder makes surface contact with the body wall of the pouch after filling and sealing, pull up the pouch after sealing. It becomes difficult to remove it from the holder. This is because it is preferable to pull out the holder without holding the holder in terms of simplifying the apparatus and work.

(Problems to be Solved by the Invention) The present invention provides a holder for storing and transporting pouches that is excellent in transportability using a worm wheel, etc., pouch centering performance, and removal performance for filled and sealed pouches. With the goal.

(Means for Solving the Problems) The holder for storing and transporting a self-supporting pouch of the present invention is used to expand the self-supporting pouch, fill the contents, heat-seal the opening, etc. A holder for storing and transporting, the holder has a storage part and an outer frame part, and the upper surface of the side wall part of the storage part has a pair of trapezoidal parts facing each other so that the center is convex. Opposing bottom ends are connected to each other via a U-shaped portion, and a central portion is a portion of the side wall portion corresponding to the top side of the trapezoidal portion, and a side wall portion corresponding to the oblique side of the trapezoidal portion. The inner circumferential surface of the tapered part, which is the part, is hanging down, and the part of the side wall corresponding to the U-shaped part, which is the part of the side wall part that accommodates the side edge heat seal part of the pouch, in the longitudinal direction The inner circumferential surface of is formed into a tapered slope section with a narrow bottom, and the inner end surface of the portion of the side end corresponding to the tapered slope section is on the same plane as the inner circumferential surface of the tapered section. The center of the lower end of the inner peripheral surface of the tapered portion is in almost point contact with the bottom end of the body wall of the pouch filled with the contents, and the upper end of the tapered slope of the side wall is The shape of the tapered portion is formed such that the end portion on the tapered portion side substantially contacts the body wall portion of the pouch when the contents are filled and the inner surfaces of the mouth portions are in complete contact with each other. , the side wall portion of the outer frame portion has a hanging outer circumferential surface, and the upper surface thereof has a protruding portion formed by slightly protruding the tip of the side end portion at the center in the width direction of the surface perpendicular to the side end portion. corner circle 4 interrupted by
It is characterized in that it is formed in a square shape, and drain holes are formed at the bottoms of the storage section and the outer frame.

The state in which the inner surfaces of the mouth portions are in complete contact with each other means that the inner surfaces of the mouth portions are completely in contact with each other, with the upper end surfaces 1d ₁ of both body wall portions 1a of the pouch being completely in contact with each other without wrinkles, etc. refers to the state in which the object is in contact with the

(Function) The inner circumferential surface _{3a 2} in the longitudinal direction of the side end 3a of the storage section that accommodates the side edge heat-sealed portion 1a 1 of the pouch 1 is as follows:
It is formed on a tapered slope with a narrow bottom. Because of this sloped portion, the pouch 1 can be smoothly stored in the holder 2 by inserting the side edge heat-sealed portion _1a1 into the side end portion 3a. Also, the tapered slope portion 3
Since a ₂ is narrow at the bottom, the lower end of side edge 3a has a gap width
w ₁ ″ is narrow (preferably about 1 to 3 mm), so that the bottom end of the side edge heat-sealed portion 1a ₁ of the pouch is correctly positioned and inserted into this lower end, and the connection between the pouch 1 and the holder 2 is Centering and its retention are ensured.

The inner end surface _3a1 of the side end portion 3a is on the same plane as the inner circumferential surface of the tapered portion 3b, that is, on the extension surface of the inner circumferential surface and does not protrude inward, so that the body of the pouch after filling is There is no risk of the wall portion 1a being depressed and making it difficult to remove the pouch.

The central portions a, a', c, and c' of the lower end _3b1 of the inner circumferential surface of the tapered portion 3b are in almost point contact with the bottom end 1f of the body wall 1a of the pouch 1 filled with the contents. The shape of the taper portion 3b is determined as follows (sixth
(see figure), it is easy to remove the pouch 1 from the holder 2, unlike in the case of horizontal line contact or surface contact. The centering of the pouch is also ensured.

The end portion 3a ₂ ′ is filled with the contents and the mouth portion 1
The tapered part 3 is arranged so that the inner surfaces of the parts d and d are in almost contact with the body wall part 1a of the pouch in a state where they are in complete contact with each other.
Since the shape of b is determined (see Figure 7),
Also from this point of view, the centering of the pouch 1 and the holder 2 can be performed reliably.

Since the outer circumferential surface of the side wall portion 4a of the outer frame portion 4 has a square shape with rounded corners, the erect stability of the holder 2 is ensured. Further, since the protruding parts 3d protrude from the side wall part 4a of the outer frame part 4, the protruding parts 3d are brought into contact with each other so that the holders 2 are brought into contact with each other, and the teeth 6a of the worm wheel 6 are inserted using the gap 5. By engaging the curved portion 4a ₂ of the side wall portion 4a, the holder 2 can be easily transported.

Since draining holes 7 are formed at the bottoms of the storage section 3 and the outer frame section 4, draining can be easily performed.

(Example) The present invention will be described below with reference to drawings which are examples.

In FIGS. 3, 4, and 5, 2 is a holder, which is made up of a storage part 3 and an outer frame part 4, and is made by injection molding of thermoplastic plastic such as high-density polyethylene or polypropylene. It is formed.

The upper surface _3x1 of the side wall portion 3x of the storage portion 3 is such that the opposing bottom ends _3y1 of a pair of hollow trapezoidal portions 3y facing each other so that the center is convex are connected to each other via a U-shaped portion 3z. As a whole, it extends in a relatively long and narrow direction in the conveying direction (direction of arrow A).

The side wall portion 3x includes a central portion 3c which is a portion corresponding to the top side _3y2 of the trapezoidal portion 3y, a tapered portion 3b which is a portion corresponding to the oblique side _3y3 of the trapezoidal portion 3y, and a portion corresponding to the U-shaped portion 3z. The outer circumferential surface of the side wall portion 3x hangs down. The side edge heat seal 3a ₁ of the pouch and its vicinity are housed in the side end 3a.

The inner circumferential surfaces of the central portion 3c and the tapered portion 3b are drooping, but the inner circumferential surface _3a2 in the longitudinal direction (direction of arrow A) of the side end portions 3a is formed into a tapered slope portion with a narrow bottom. The inner end surface 3a ₁ of the side end portion corresponding to the tapered slope portion 3a ₂ is on the same plane as the inner circumferential surface of the tapered portion 3b.

As shown in FIG. 6, the lower end 3b ₁ of the inner circumferential surface of the tapered portion 3b and the lower end 3c ₁ of the inner circumferential surface of the central portion 3c are filled with the contents and are therefore sealed by heat sealing. The bottom end 1f of the pouch 1, a,
The shape of the storage section 3 is determined according to the size of the pouch 1, etc. so that there is almost point contact at points c, a', and c'. Due to the dimensions mentioned above and below,
The filled and sealed pouch 1 can be easily removed from the holder 2. In addition, the pouch 1, which is positioned by the above-mentioned point contact and the narrow lower end of the inner circumferential surface _3a2 of the side end 3a (w ₁ ''; Fig. 5) described later, is There is no risk of it shaking inside the storage section 3.

Furthermore, the width w ₂ of the central portion 3c is determined to be approximately equal to the maximum value of the bottom end 1f of the pouch after filling, and therefore the bottom end 1f is equal to the width of the storage portion 3 and b,
There is almost point contact at point b'.

As shown in FIG. 7, the inner peripheral surface 3a ₂ of the side end 3a
The end portion 3a' ₂ of the upper end on the tapered portion 3b side is filled with the contents, and the mouth portion 1d is completely filled (that is, without wrinkles etc.), and the upper end surface 1d ₁ ( (Fig. 1) in a sealed state (without heat sealing) so that the mouth part 1d
(the inner surfaces of the pouch 1 may be in contact with each other), the outer surfaces of the pouch 1 are in substantially contact (in this specification, "substantially in contact" refers to a case where the outer surfaces of the pouch 1 are very close to each other, and to the extent that the pouch 1 is not dented). The shape of the tapered portion 3b is determined so that the shape of the tapered portion 3b includes the case where there is light contact.

If the portion 1g of the pouch 1 that contacts the end 3a ₂ ' is depressed, the mouth _1d will remain open to some extent even after stretching, making it easy for wrinkles to occur during heat sealing. If the parts 1a are too far apart, the center will not come out during stretching, and both sides of the mouth part 1d will not be stretched evenly.
This is because wrinkles are more likely to occur after stretching.

Note that as shown in _FIG .
The lower portion 1g' of the pouch 1, which corresponds to the point g, is slightly recessed inward and away from the inner end surface _3a1 , as shown in FIG.

The inner circumferential surface _3a2 of the side end portion 3a extending in the conveyance direction is
As mentioned above, the interval width w ₁ is formed in a tapered slope portion that becomes narrower as it goes downward, and the interval width w ₁ ′ at the upper end of the inner circumferential surface 3a ₂ facilitates the insertion of the pouch 1. The spacing width w ₁ ″ at the lower end is made narrow to hold the side edge heat-sealed portion 1a 1 of the bottom end 1f of the pouch ₁ , and is preferably about 10 to 20 mm and about 1 ″, respectively. 3 mm.Therefore, the pouch 1 can be loaded smoothly, and its centering and holding can be ensured.

The outer frame portion 4 has a common bottom surface 2a with the storage portion 3 to ensure the erect stability of the holder 2. The outer circumferential surface and inner circumferential surface of the side wall section 4a of the outer frame section 4 are drooping, and the upper surface _4a1 is such that the center in the width direction of the surface orthogonal to the side wall section 3a is slightly protruding from the tip of the side wall section 3a. It has a rectangular shape with rounded corners having a curvature 4a ₂ interrupted by a protrusion 3d.

Therefore, as shown in FIG. 8, even if the holders 2 come into contact during transportation, a gap 5 is formed between each holder 2 due to the protrusion 3d, so the gap 5 of a worm wheel or the like is used. Each holder ₂ can be easily transported by the transport means by engaging, for example, the teeth 6a of the worm wheel 6 with the curved portion 4a2.

Further, a drainage hole 7 is formed at the bottom of the storage section 3 and the outer frame section 4. Therefore, water can be easily drained during the step of cooling the pouch 1 with water or washing the pouch 1 with water to remove dirt caused by adhering contents.

In order to reduce weight and save material costs, the outer frame portion 4 is hollow and has a lower height than the storage portion 3.

(Effects of the Invention) The holder for storing and transporting pouches of the present invention has the advantage of being excellent in transportability using a worm wheel, etc., in centering of the pouch, and in the ability to extract the filled and sealed pouch. In particular, due to the centering properties mentioned above, wrinkles do not easily form at the mouth during stretching or heat sealing, and therefore a heat-sealed part with excellent sealing performance and appearance without pores etc. can be formed at the mouth. It has the advantage of

Further, the holder of the present invention has the advantage that it has excellent erecting stability and drainage performance, and there is no risk of the pouch shaking during transportation.

[Brief explanation of drawings]

Fig. 1 is a front view of an example of a pouch applied to the present invention, Fig. 2 is a bottom view of the pouch shown in Fig. 1 after being expanded, and Fig. 3 is a perspective view of a holder that is an embodiment of the present invention. , Figure 4 is a plan view of the holder in Figure 3, Figure 5 is a plan view of the holder in Figure 3;
The figure is a longitudinal cross-sectional view taken along the - line in FIG. It is a top view which shows the example of conveyance of the pouch of a figure. 1... Self-supporting pouch, 1a... Trunk wall part, 1a ₁ ...
...Side edge heat seal part, 1d... Mouth part, 1f...
Bottom end, 2... Holder, 3... Storage section, 3a...
...Side end, 3a ₁ ...Inner end surface, 3a ₂ ...Inner peripheral surface, 3
a′ ₂ ... end, 3b ... taper part, 3c ... center, 3d ... protrusion, 3x ... side wall, 3x ₁ ...
Top surface, 3y... Bottom trapezoidal part, 3y ₁ ... Bottom end, 3
y ₂ ... top side, 3y ₃ ... hypotenuse, 3z ... U-shaped part,
4...Outer frame part, 4a...Side wall part, 4a ₁ ...Top surface,
7...Draining hole.

Claims (1)

[Claims] 1 In order to expand the self-supporting pouch, fill it with contents, heat seal the mouth, etc., store the pouch,
The holder is for transport, and the holder has a storage part and an outer frame part, and the upper surface of the side wall part of the storage part is formed by a pair of opposing trapezoidal parts facing each other so that the center thereof is convex. The bottom ends are connected through a U-shaped part, and the central part is the part of the side wall corresponding to the top side of the trapezoid part, and the part of the side wall part corresponding to the oblique side of the trapezoid part. The inner circumferential surface of the tapered part is drooping, and the inner peripheral surface of the side wall part corresponding to the U-shaped part in the longitudinal direction of the side end that accommodates the side edge heat-sealed part of the pouch is The peripheral surface is formed into a tapered slope portion with a narrow bottom, and the inner end surface of the portion of the side end corresponding to the tapered slope portion is on the same plane as the inner peripheral surface of the tapered portion, and the tapered portion such that the lower end of the inner peripheral surface of the pouch near the center is in almost point contact with the bottom end of the body wall of the pouch filled with the contents, and the taper of the upper end of the tapered slope of the side wall is The shape of the tapered part is formed such that the end on the side of the pouch substantially contacts the body wall part of the pouch when the pouch is filled with the contents and the inner surfaces of the mouth parts are in complete contact with each other. The side wall portion of the outer frame portion has a hanging outer peripheral surface, and the upper surface thereof is interrupted at the center in the width direction of a surface perpendicular to the side end portion by a protruding portion formed by a slightly protruding tip of the side end portion. A holder for storing and transporting a self-supporting pouch, which is formed into a rectangular shape with rounded corners, and has drainage holes formed at the bottom of the storage part and the outer frame part.