JPH11100012A - Crease-forming apparatus for packaging material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a beltlike crease in the lengthwise direction at an optional position in the breadthwise direction of a packaging material without allowing crumples to be produced by a method wherein a horizontal plate for controlling the width of creasing for the packaging material and a heat-sealing means in static pressure sticking type are provided so that they can be moved and held in the direction intersecting at a right angle in the direction wherein the packaging material is moved. SOLUTION: A horizontal plate 3 for controlling the width of creasing for a packaging material is provided, with a creasing holding plate 8 provided thereunder, at the upside of a base 2 of a crease forming part (1) for the packaging material so that the horizontal plate can be moved and held, together with the crease holding plate, in the direction intersecting at a right angle the direction wherein the packaging material is moved. Then, gaps for passage each in a width wider than the thickness of the packaging material are provided at positions between the underside of the horizontal plate 3 and the upside of the creasing holding plate 8, between the underside of the creasing holding plate 8 and the upside of a fixation base 5 and between the side 4a of a leg part 4 and the tip 4b of the creasing holding plate 8. Furthermore, a sealing part (2) in static pressure sticking type that is composed of a heating plate 14 positioned close to the crease forming part (1) in the direction wherein the packaging material moves and capable of going up and down for moving and holding a support arm 17 in the transverse direction and a support base 16 with a support plate 15 mounted thereon provided under the heating plate is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-like packaging container for food and other articles having a band-like bent portion formed in the longitudinal direction of a thin packaging material (hereinafter referred to as "packaging material") such as paper, sheet and film. In particular, the forming and bonding of the band-shaped bent portion can be set at an arbitrary position in the width direction of the material, and the bonding portion does not generate an adhesive wrinkle. It relates to a molding device.

[0002]

2. Description of the Related Art Conventionally, in a closed packaging bag or a closed packaging container for food and other various articles such as confectionery, in order to prevent the container from being ruptured due to expansion of internal gas or vapor, a pile parallel to the longitudinal direction of a thin material for packaging is used. A line and a band-shaped portion formed by bending with reference to two parallel valley lines outside the line, and the back surface of the rising portion between the mountain line and the valley line and the back surface of the band-shaped portion are thermally bonded. Packaging bags are known. (Japanese Utility Model Publication No. 02-35647)

[0003] Also, there has been proposed an apparatus for continuously forming the above-mentioned band-shaped bent portion of the packaging bag from a material roll paper. According to this, a base on which a packaging material slides and a packaging material sliding on the base are joined to a position corresponding to the center line in the width direction. A T-shaped or inverted L-shaped fixing base composed of a vertical plate and a horizontal plate,
A wrapping material bent portion consisting of a pair of bent plates attached parallel to the base plate and the horizontal plate of the fixed base and at a predetermined distance from the vertical plate of the fixed base, and behind the bent portion. It is composed of at least a heat roller for holding the bent ears and pressing and rotating while applying heat, and at least a pair of rollers for feeding the paper while holding the packaging material behind the bent portion. . This is an apparatus configured to pull the packaging material in the moving direction while the packaging material is positioned on the horizontal plate, between the horizontal plate and the bent plate, and between the bent plate and the substrate.

[0004]

A bag-shaped container having a band-shaped bend is required not only for measures against inflation and rupture but also in recent years in terms of additional functions such as diversification of consumer needs, upgrading, and stimulation of willingness to purchase. And the demand for designs that are diversified from uniform ones is increasing. In order to meet such a demand, it is not enough to use only the conventional band-shaped bending formed at the center in the width direction, and it is necessary to form the band-shaped bending at an arbitrary position in the width direction.

[0005] By the way, it is known that as the band-like bending position of this type of packaging material is deviated from the center in the width direction of the packaging material, wrinkles are likely to be generated in the packaging container in the subsequent heat-compression bonding step, resulting in an unsightly appearance. Have been.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and forms a band-shaped fold in a longitudinal direction at an arbitrary position in a width direction of a wrapping material. It is an object of the present invention to provide a bending forming apparatus having a characteristic in which wrinkles do not occur.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and (1) a base having a width wider than the packaging material for supporting the packaging material moving in one direction; A rising leg in which a horizontal plate that regulates the bending width of the packaging material is fixed on the base, a fixed base in which the lower part of the leg is integrally supported and fixed, and a direction in which the packaging material moves in a direction in which the packaging material moves. Means for moving and locking on the base in a direction orthogonal to the base, and a clamping plate bent between the lower surface of the horizontal plate and the upper surface of the base toward the side surface of the leg from the width direction of the packaging material. And between the plate surface of the bent holding plate and the lower surface of the horizontal plate and the upper surface of the base, and between the side surface of the leg and the tip of the bent holding plate, at least the thickness of the packaging material or more. A bending section in which the passing gap is held, and after the moving direction of the packaging material in the bending section An adhesive portion comprising a heat bonding means for the bent portion and a means for locking and fixing the heat bonding means in a direction orthogonal to the moving direction of the packaging material, and And a moving portion comprising means for forcibly moving while holding in a direction.

(2) In the apparatus for folding and forming a packaging material according to the above (1), the base of the fixing base is provided with a concave groove or a through row on the base provided in a direction orthogonal to a moving direction of the packaging material. It is characterized by comprising means for fitting into the hole and being movable and locked and fixed at an arbitrary position.

(3) In the apparatus for folding and forming a packaging material according to the above (1), the leg portion is fixed to one end of the horizontal plate in a direction orthogonal to the moving direction of the packaging material or a lower surface inside the end. It is characterized by becoming.

(4) In the apparatus for folding and forming a packaging material according to the above (1), the bent holding plate straddles in a direction higher than a surface of the horizontal plate and in a direction orthogonal to a moving direction of the packaging material. It is characterized in that it is connected to a means that fits into a groove or through-hole row on the provided arm and is movable and locked and fixed at an arbitrary position.

(5) In the apparatus for folding and forming a packaging material according to the above (1), the adhesive portion has a heating plate having elevating means immediately above the bending portion of the packaging material, and the heating plate is provided on a receiving plate. And a control unit for moving the heating plate and the packaging material apart from each other and relatively moving after that, the heating plate and the packaging material are separated from each other by heating and pressure bonding for a predetermined time.

[0012]

According to the packaging material bending apparatus of the invention (1), a rising leg in which a horizontal plate for regulating the bending width of the packaging material is fixed to the top, and a lower portion of the leg are integrally supported. There is a feature in that it has a fixed fixed base and a means for moving the fixed base on the base in a direction orthogonal to the moving direction of the packaging material and for locking and fixing the fixed base. A belt-like fold in the length direction can be formed at an appropriate position.
In the present invention, at least the thickness of the packaging material between the plate surface of the bent holding plate and the lower surface of the horizontal plate and the upper surface of the base, and between the side surface of the leg portion and the tip of the bent holding plate. The passing gap is held, and the packaging material is pinched in the width direction and forcedly moved, so that the ridge along the end of the horizontal plate and the valley along the tip of the bent holding plate in the conventional fold forming apparatus. The formed width shifting function works as it is.

[0013] In the apparatus for folding and forming a packaging material according to the invention (2), the base of the fixing base of the above (1) may be provided with a concave groove on the base provided in a direction perpendicular to the moving direction of the packaging material. Alternatively, it can be reliably positioned and fixed by means of fitting into the through-holes and being movable and locked and fixed at an arbitrary position.

According to the packaging material bending apparatus of the invention (3), the cross section fixed to one end in the direction perpendicular to the moving direction of the packaging material of the leg and the horizontal plate of the above (1) is inverted. L-shaped or a horizontal plate having a T-shaped cross section fixed to the lower surface inside the end portion, whereby the former has a band-like bending of one ear, and the latter has a band-like bending of both ears. Can be formed.

[0015] In the packaging material bending apparatus of the invention (4), the folding holding plate is laid on a level higher than a surface of the horizontal plate and in a direction perpendicular to the moving direction of the packaging material. Connected to a means for engaging and moving in a groove or through-hole array on the set arm and locking and fixing the horizontal plate at an arbitrary position, thereby bending the horizontal plate to a position corresponding to the moving position of the horizontal plate. The holding plate can be locked and fixed.

In the folding apparatus for a packaging material according to the invention (5), the bonding portion may include a heating plate having an elevating means immediately above the folding portion of the packaging material, and the heating plate may be provided on the receiving plate. As a result of having a control means for descending onto the bent portion surface and performing heat compression bonding for a certain period of time, and thereafter, the heating plate and the packaging material are separated and relatively moved, as in a conventional roll heat bonding method, Since it is not a dynamic joint, it is avoided from generating defects such as wrinkles and holes in the bonded portion caused by forcibly pulling and moving a thin packaging material in a heat-softened state or an insufficiently bonded state.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the contents of the present invention will be described based on embodiments. FIG. 1 is a plan view of the entire apparatus, and FIG. 2 is a vertical sectional view taken along the line aa ′ of FIG. In the figure, reference numeral 1 denotes a packaging material, which is a composite film (JIS Z1707 plastic film for food packaging) having a hot-melt adhesive laminated on the back surface. In this example, 1 is a continuous supply from the take-up roll 1a in a tensioned state via the rollers 2a, 2b, 2c, 2d, and 2e. However, the present invention is not limited to this. it can.

The apparatus of the present invention functionally comprises a bent part (1), an adhesive part (2), and a moving part (3). The bent part (1) is configured on a base 2 wider than the packaging material that supports the packaging material 1 that moves in the direction of the arrow by placing and sliding. FIG. 3 is a plan view of the bent part (1) with the packaging material 1 removed, and FIG. 4 is a longitudinal sectional view of the part. FIG. 5 is a longitudinal sectional view of another embodiment of the same part. Hereinafter, description will be made with reference to this. As shown in FIG.
Is formed at a position deviated from the center line CC ′ of the moving direction. A horizontal plate 3 for regulating the folding width of the packaging material and a folding pinch plate 8 below the horizontal plate 3 are provided on the base 2, and the horizontal plate 3 and the folding pinch plate 8 are individually arranged in the moving direction of the packaging material. It is movable in orthogonal directions and is supported by means for locking and fixing.

FIG. 4 shows an embodiment of the molded part (1) of the present invention, and FIG. 4- (a) is a longitudinal section in the moving direction of the packaging material 1 (ff 'in FIG. 4- (b)). FIG. 4- (b) is a vertical sectional view taken along the line ee ′ in FIG. 4- (a). The horizontal plate 3
A rising leg 4 fixed to the top, a fixed base 5 integrally supporting and fixing the lower part of the leg 4, and the fixed base 5 is moved on the base 2 in a direction perpendicular to the moving direction of the packaging material. The means for enabling, in this example, the through row holes 9 and the means for locking and fixing, in this example, are locked and fixed by the through bolt 6 and the nut 7 shown in FIGS. 4 (a) and 4 (b). A folding sandwiching plate 8 is mounted between the lower surface of the horizontal plate 3 and the upper surface of the fixing base 5 from the width direction of the packaging material 1 toward the side surface 4a of the leg portion 4. Between the upper and lower plate surfaces, the lower surface of the horizontal plate 3 and the upper surface of the fixed base 5, and the side surface 4a of the leg portion 4.
A gap that is at least equal to or greater than the thickness of the packaging material 1 is held between the tip end 4b of the bent holding plate and the tip end 4b.

A notch 8a is provided on the bent holding plate 8 on the side of the packaging material 1 on the entry side to facilitate the entry of the packaging material into the bent portion as in the conventional case. It is desirable that the notch 8a and the side corners of the holding plate 8 be moderate R portions to facilitate the entry of the packaging material 1. Bending plate 8
Is conveniently movable in a direction perpendicular to the direction of movement of the packaging material 1, but in this example, as shown in FIG. It is constituted by screwing means 10a which fits into the through row holes on the arm 10 and is movable and locked and fixed at an arbitrary position.

FIG. 5 shows another example of the structure for moving and locking the bent part (1). FIG. 5- (a) shows a vertical section in the moving direction of the packaging material (h-h in FIG. 5- (b)). h ′ arrow), and FIG.
It is a vertical section taken on line GG 'of FIG. The base 2 shown in FIG.
In the direction orthogonal to the moving direction of the packaging material 1 above, a V-shaped groove 12 in cross section is used, and in the moving direction of the packaging material 1 shown in FIG. This is a structural example in which a V-shaped cross-section piece 11 at the lower end is pressed against the bottom surface of the concave groove 12 and the position of the fixing table 5 is fixed by the sliding resistance.

As shown in FIG. 6, the bonding portion (2) is provided at a position corresponding to the moving direction of the horizontal plate 3 of the bent portion (1). FIG. 6A is a vertical cross section in the direction of movement of the packaging material (as viewed from the arrow JJ ′ in FIG. 6B), and FIG.
FIG. 6 is a cross-sectional view taken along the line ii ′ of FIG. It comprises a heating plate 14 and a support 16 on which a receiving plate 15 is placed below. The heating plate 14 is not of a conventional rotating roll, but of a static pressure bonding system capable of moving up and down. The heating plate 14
A support arm 17 provided in a direction perpendicular to the direction of movement of the packaging material 1 is connected to the movable leg 14a, and a set screw 18
Is locked and fixed at a predetermined position.

The supporting arm 17 is connected to an elevating column 19 which stands on an elevating mechanism (not shown). By this lowering, the heating plate 14 is moved to the receiving plate 15 as shown in FIG.
Then, it is lowered onto the surface of the folded portion 3a of the packaging material stopped on the surface of the substrate and adheres by pressure. Subsequently, as shown in FIG. 7A, after a lapse of a predetermined time, the heating plate 14 is raised and separated from the receiving plate 15, and the packaging material moves in the moving direction. The timing of the packaging material moving step and the stop pressure bonding are as illustrated in FIG. 7- (c). This completes the static crimping process,
No wrinkles, tears, etc. occur in the packaging material.

In the above-described embodiment, the heating plate 14 and the receiving plate 15 are fixed at one place, and only the lifting and lowering pressure bonding and the separation are performed, and the movement and the stop depend on the movement control means of the packaging material. However, the wrapping material is continuously moved, and the heating plate 14 and the receiving plate 15 move while maintaining the state where the wrapping material is crimped and held for a fixed moving distance of the wrapping material, and then return to the original position. This operation may be repeated. That is, it is possible to incorporate a general control means for moving the heating plate 14 and the packaging material apart and relatively moved.

The moving section (3) comprises means for pinching the packaging material 1 via the adhesive section (2) in the width direction and forcibly moving it, in this example, a pinch roll 12. The movement and stop of the packaging material at the bonding portion may be provided by a driving source for the pinch roll 12 in which the moving distance or the moving time is set as a control factor.

With the apparatus of the above embodiment, a composite roll film (JIS Z1707) having a hot-melt adhesive laminated on the back surface
As a result of applying a band-shaped bending molding having a center at the position of 80% deviation in the width direction of the packaging material using a plastic film for food packaging) as a material, there are no defects such as wrinkles and holes which can not be obtained by the conventional apparatus. A smooth band-like bent portion having a good appearance could be formed stably.

[0027]

As is clear from the above description, the apparatus for folding and forming a packaging material according to the present invention has a horizontal plate for regulating the bending width of the packaging material on a base wider than the packaging material. In a folding device having a rising leg fixed to the base, a fixed base integrally supporting and fixing the lower part of the leg, and a folding plate attached to the side of the leg, the fixed base is moved by the packaging material. A point which has means for moving and locking on the base in a direction perpendicular to the direction so that a band-shaped bent portion can be formed at a position deviated from the center in the width direction; It is characterized in that it consists of a static crimp between the heating plate and the receiving plate. For this reason, it is possible to form a band-like fold in the length direction at an arbitrary position in the width direction of the packaging material, and to realize a band-like fold without wrinkles or holes.

[0028] The present invention further comprises a moving means and a fixing means for disposing the bent holding plate, the heat-pressed plate and the like at a position corresponding to the above-mentioned bent-formed-part fixing stand, that is, a direction orthogonal to the moving direction of the packaging material. Can be. This is excellent in operability and contributes to productivity improvement.

[Brief description of the drawings]

FIG. 1 is a plan view of an entire apparatus to which the present invention is applied.

FIG. 2 is a vertical sectional view taken along the line a-a 'in FIG.

FIG. 3 is a plan view of a bent portion and an adhesive portion of the present invention.

FIG. 4- (a) is a longitudinal sectional view of a bent portion according to the present invention. (Viewed from arrow ff ′ in FIG. 4- (b))

FIG. 4- (b) is a vertical sectional view taken along the line ee ′ of FIG. 4- (a).

FIG. 5- (a) is a longitudinal sectional view of another bent portion of the present invention. (Viewed by arrows hh 'in FIG. 5B)

FIG. 5- (b) is a sectional view taken along the line gg ′ of FIG. 5- (a).

FIG. 6 (a) is a longitudinal sectional view of the bonding portion of the present invention.
(Viewed by arrows JJ ′ in FIG. 6- (b))

FIG. 6 (b) is a sectional view taken along the line ii ′ of FIG. 6 (a).

FIG. 7 (A) is an explanatory diagram of a state before bonding of a bonding portion according to the present invention.

FIG. 7- (B) is an explanatory diagram of a bonding state of a bonding portion of the present invention.

FIG. 7 (C) is an explanatory view of a step of moving the packaging material of the bonding portion according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging material 2 Base 3 Horizontal plate 3a Packaging material bending part 4 Leg part 4a Leg side surface 5 Fixing stand 8 Bending clamping plate 9 Depression groove or through row hole 10 Straddling arm 11 Vertical section V-shaped top 12 Vertical section V-shaped groove 14 Heat bonding plate 15 Receiving plate 17 Support arm 19 Elevating column

Claims (5)

[Claims] 1. A base having a width wider than the packaging material for supporting the packaging material moving in one direction, and a rising leg fixed on a top of the base with a horizontal plate for regulating a folding width of the packaging material. A fixing base integrally supporting and fixing the lower part of the leg, a means for moving and locking the fixing base on the base in a direction orthogonal to the moving direction of the packaging material, and a lower surface of the horizontal plate; A folding sandwiching plate is mounted between the upper surfaces of the bases in the width direction of the packaging material toward the side surfaces of the legs, and between the plate surface of the folding sandwiching plate, the lower surface of the horizontal plate, and the upper surface of the base. And a bent portion having a passage gap at least equal to or greater than the thickness of the packaging material between the side surface of the leg portion and the tip of the bent holding plate, and movement of the packaging material in the bent portion. The heat bonding means of the bent portion adjacent to the direction and the heat bonding means are orthogonal to the moving direction of the packaging material. Characterized in that it comprises an adhesive portion comprising means for moving and locking and fixing in the direction in which the packaging material is moved, and a moving portion comprising means for forcibly moving the packaging material in the width direction. Molding equipment. 2. A base of the fixing base is fitted to a concave groove or a through-hole on the base provided in a direction orthogonal to a moving direction of the packaging material, and is movable and locked at an arbitrary position. 2. The apparatus according to claim 1, wherein the apparatus comprises a unit. 3. The packaging material according to claim 1, wherein the leg is fixed to one end of the horizontal plate in a direction orthogonal to the moving direction of the packaging material or a lower surface inside the end. Bending equipment. 4. The bent holding plate fits into a groove or a through-hole on an arm provided at a higher level than the surface of the horizontal plate and in a direction orthogonal to the moving direction of the packaging material. 2. The folding apparatus according to claim 1, wherein the folding apparatus is connected to a means for moving and locking at an arbitrary position. 5. A heating plate having an elevating means immediately above a bent portion of the packaging material, wherein the adhesive portion is lowered on the bent portion surface on a receiving plate, and is heat-pressed for a predetermined time. And control means for subsequently moving the heating plate and the packaging material away from each other.
An apparatus for folding and forming a packaging material as described above.