JP2006199343A - Resealable packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag having a function that the bag can be unsealed by hands after a content is filled and hermetically sealed, the content can be easily taken out and the bag can be resealed. <P>SOLUTION: The resealable packaging bag has an upper seal part and side seal parts on both sides, an non-sealed part is formed at one corner of the upper seal part, and a notch and a perforation at a position close to the upper seal part. The non-sealed part is formed of two laminate materials consisting of a laminate body with an intermediate film layer and a sealant layer having a perforation on one side of a base material layer laminated on each other, a three-layer co-extrusion film layer with a polyolefin-based resin layer laminated on both sides of a pressure-sensitive adhesive resin layer is laminated on one side of a base material film layer, and a resealable laminate tape consisting of a laminate with a sealant layer laminated on the other side is held in a sandwich manner from both sides. The upper seal part and both side seal parts are formed of two laminate materials of the same configuration while the resealable laminate tape is held in a sandwich manner from both sides and sealed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packaging bag having a function of opening and repeatedly resealing contents such as food and non-food after packaging.

  After packaging contents such as food and non-food in various types of packaging bags, when using the contents, after opening the contents once and taking out the contents, if you want to continue to store the remaining contents, In many cases, it was repeatedly folded and resealed, or the tip was twisted with a rubber band and resealed, but it was very troublesome. As an example of a method for improving these troublesome points, an adhesive layer (14 ') on one side of a base material layer (11') made of a polyester film having tear linearity in one direction, and an adhesive resin made of an acrylic resin As shown in FIG. 6, a laminate material (10 ′) made of a laminate in which a layer (23 ′), an adhesive layer (15 ′) and a sealant layer (13 ′) made of polyethylene resin are laminated is used on the front side and the back side. A three-side seal type resealable packaging bag having an opening (32 ') on one side, an upper seal portion (33'), side seal portions (34 ', 35'), and a notch (37 ') ( 30 ') and the resealable packaging bag (30') is filled with the contents from the opening (32 ') and sealed. When using, the entire layer of the laminated material (10 ') on the front side and the sealant layer (13') and the adhesive layer (15 ') of the laminated material on the back side are combined from the notch (37'), The upper seal part (33 ') side part is peeled off in the width direction of the bag and torn, and the remaining back side laminated material (10') base material layer (11 '), adhesive layer (14') and adhesiveness There is a method in which the resin layer (23 ′) is folded back with the adhesive resin layer (23 ′) surface inside, and in this case, the area of the outermost adhesive resin layer (23 ′) is Due to its large size, there was a drawback that it was difficult for the contents to be taken out when the hand touched the adhesive resin layer (23 ') when taking out the contents.

  An object of the present invention is to provide a packaging bag which has a function of opening a content by hand after filling and sealing the content, allowing the content to be easily taken out, and resealing.

  The invention according to claim 1 of the present invention comprises two laminated materials, front and back, having an upper seal part on one side of the bag body part, an opening on the opposite side, and on both sides. A side seal portion having a side seal portion, having a mouth-like unsealed portion formed at a corner portion where the upper seal portion and one side seal portion intersect, and being close to the upper seal portion on the unsealed portion side A re-sealable packaging bag having a perforation extending in parallel with the upper seal portion from the front end of the cut to the end of the other side seal portion, the unsealed portion being front and back A two-layer laminate material with a resealable laminate tape sandwiched between both sides, and the upper seal portion and the side seal portions on both sides are re-laminated with two laminate materials on the front and back, respectively. Sandwich the sealing laminate tape from both sides, and A reclosure of the packaging bag, characterized in that it consists of one of a state in which Lumpur.

  The invention according to claim 2 of the present invention is the invention according to claim 1, wherein the laminated material is provided with perforation lines at a predetermined interval perpendicular to the flow direction of the film on one surface of the base material layer. An intermediate film layer and a sealant layer are sequentially laminated, and the resealable laminated tape is formed by laminating a polyolefin resin layer on one side of the base film layer and on both sides of the adhesive resin layer. A resealable packaging bag comprising a laminate in which a three-layer coextruded film layer is laminated and a sealant layer is laminated on the other surface.

  The resealable packaging bag of the present invention is made of a laminated material of two sheets, front and back, and has an upper seal part on one side of the bag body part, an opening part on the opposite side, and side parts on both sides. A side seal portion having a seal portion, having a mouth-like unsealed portion formed at a corner portion where the upper seal portion and one side seal portion intersect, and being close to the upper seal portion on the unsealed portion side. A re-sealable packaging bag having a notch at the end and having a perforation line extending in parallel with the upper seal portion from the front end of the notch to the end of the other side seal portion. It consists of two sheets of laminate material in which a resealable laminate tape is sandwiched from both sides, and the upper seal part and the side seal parts on both sides are resealed with two laminate materials on the front and back, respectively. Sandwich the adhesive laminate tape from both sides and seal An intermediate film layer and a sealant layer are sequentially laminated on the one surface of the base material layer in which the perforated lines are provided at a predetermined interval perpendicular to the film flow direction. The laminate is composed of a three-layer coextruded film layer in which the resealable laminated tape is formed by laminating a polyolefin-based resin layer on both sides of the adhesive resin layer on one side of the base film layer, It is made of a laminate with a sealant layer laminated on the surface, so when filling the contents from the opening of the resealable packaging bag, opening the sealed product and taking out the contents, a mouth-open unsealed From the part, peel all the layers of the laminated material on the front side and the polyolefin resin layer located on the front side of the resealable laminated tape together from the adhesive resin layer and peel them off in an oblique direction. Misi from the part By continuously peeling along the line of sight and opening, a laminated material having a reverse concave adhesive resin layer on the back side is obtained, and the laminated material is folded so that the reverse concave adhesive resin layer surface is on the inside. Thus, the reverse concave adhesive resin layer can be pressure-bonded to the base material layer surface of the laminated material on the front side and resealed. Therefore, it can be widely used in applications where the contents need to be resealed after being taken out once.

  The resealable packaging bag of this invention is demonstrated below along embodiment. FIG. 3 is a perspective view showing an embodiment of a laminated material used on the front side and the back side of the resealable packaging bag of the present invention, and the laminated material (10) is formed in the order of thickness in the base material layer (11), An adhesive layer (14), an intermediate film layer (12) comprising a linear perforation line (16) provided perpendicularly to the film flow direction at predetermined intervals, an adhesive layer (15), and a sealant layer (13) is laminated. In addition, the structure which laminated | stacked the printing layer between the base material layer (11) and the adhesive bond layer (14) may be sufficient.

  The said base material layer (11) consists of a single layer or a multilayer film, and as a film used, for example, a biaxially-stretched polypropylene film with a thickness of 20 to 30 μm, a biaxially stretched with a thickness of 15 to 25 μm Nylon film, biaxially stretched polyester film having a thickness of 6 to 12 μm, gas barrier obtained by laminating a vapor deposited thin film layer of inorganic oxide such as silicon oxide or aluminum oxide, and a gas barrier coating layer on a biaxially stretched polyester film having a thickness of 6 to 12 μm A film etc. can be used.

  The intermediate film layer (12) consists of a single layer film in which linear perforations (16) are continuously provided at a predetermined interval perpendicular to the flow direction, and is used as a single layer film. For example, a biaxially stretched polypropylene film having a thickness of 20 to 30 μm, a biaxially stretched nylon film having a thickness of 15 to 25 μm, and a biaxially stretched polyester film having a thickness of 6 to 12 μm can be used. The perforation line (16) is provided to facilitate opening of the resealable packaging bag (30) along the perforation line (16).

The sealant layer (13) is made of a polyolefin resin or polyolefin resin film. The type of resin to be used is not particularly limited as long as it can be easily torn. For example, polyethylene resin, polypropylene resin, ethylene / vinyl acetate copolymer resin, and the like are used. The lamination is performed by a known dry lamination method, melt extrusion lamination method, or sandwich lamination method. The thickness is appropriately selected, but about 30 to 60 μm is preferable in consideration of tearability.

A polyurethane adhesive is generally used for the adhesive layers (14, 15). Usually, a two-component type is used in which a main component having a hydroxyl group and a curing agent having an isocyanate group are mixed in two components. The lamination is performed by a known gravure coating method. The coating amount is preferably 1 to 5 g / m ² (dry state).

  FIG. 4 is a perspective view showing an embodiment of the resealable laminated tape used in the resealable packaging bag of the present invention. The resealable laminated tape (20) is provided on both sides of the adhesive resin layer (23). Three-layer coextrusion film layer (22) formed by laminating polyolefin resin layers (24, 25), adhesive layer (27), substrate film layer (21), adhesive layer (28), sealant layer (26 ) Are sequentially stacked. For example, the resealable laminated tape (20) is formed by removing the polyolefin resin layer (25) from the adhesive resin layer (23) and peeling off the adhesive resin layer (23) surface again. It can be resealed by crimping to the other surface.

  The base film layer (21) is usually a biaxially stretched polypropylene film having a thickness of 20 to 30 μm, a biaxially stretched nylon film having a thickness of 15 to 25 μm, or a biaxially stretched polyester film having a thickness of 6 to 12 μm. Is done.

  The resin used for the adhesive resin layer (23) is not particularly limited as long as it has adhesiveness, and examples thereof include acrylic resins. The thickness is preferably about 10 to 30 μm.

  For the polyolefin resin layers (24, 25), it is preferable to use the same type of resin as that used for the sealant layer (13), and the thickness is preferably about 15 to 30 μm.

  The sealant layer (26) is made of a polyolefin-based resin or a polyolefin-based resin film, and is preferably the same type of resin as the resin used for the sealant layer (13), and has a thickness of about 10 to 20 μm. Is preferred.

  The adhesive layers (27, 28) are the same as the adhesive layers (14, 15).

  FIG. 1: is a top view which shows one Embodiment of the resealable packaging bag of this invention, A resealable packaging bag (30) uses the said laminated material (10) and resealable laminated tape (20). The bag body is made, and has an opening (32) on one side of the bag body (31), an upper seal (33) on the opposite side, and side seals (34, 35) on both sides. And has a mouth-shaped unsealed portion (36) formed at a corner portion where the upper seal portion (33) and one side seal portion (34) cross each other, on the unsealed portion (36) side. A notch (37) is provided at the end of the side seal portion (34) adjacent to the upper seal portion (33), and the upper seal portion (33) extends from the tip of the notch (37) to the end of the other side seal portion (35). ) And a perforation line (16) extending in parallel.

2 (a) is a cross-sectional view taken along the line AA 'of FIG. 1, and the side seal portion (34) is formed by laminating a resealable laminated tape (20) having the same width as the side seal portion (34) from both sides. The material (10) is sandwiched between materials and sealed from above, and the unsealed part (36) is made of a resealable laminated tape (20) of the same shape with laminated material (10) from both sides. It is made of a sandwiched state, and there is a gap (40) between the resealable laminated tape (20) and the laminated material (10) on both sides, and (b) is shown in FIG. The side seal part (35) sandwiches a resealable laminated tape (20) having the same width as that of the side seal part (35) from both sides with a laminate material (10) in a sandwich shape. , Which is sealed from above, (c) in FIG. -C 'line sectional view, the upper seal portion (33) is sandwiched between two layers of resealable laminated tape (20) having the same width as the upper seal portion (33) with laminated material (10) from both sides, The upper seal part (33) is composed of two laminated materials (10), and has an opening (32) at the lower end. The intermediate film layer (12) of the laminated material (10) has a perforation line (16).

  The shape of the cut (37) is not particularly limited, and may be a straight cut.

  Fig.5 (a) and FIG.5 (b) are explanatory drawings which show one use example of the resealable packaging bag of this invention, and the contents (a content is not displayed on a figure) in a resealable packaging bag After sealing, the opening portion is sealed and the sealing portion (38) is provided, and the whole surface of the laminated material (10) on the front side is re-sealed by hand from the portion of the mouth-shaped unsealed portion (36). The polyolefin-based resin layer (25) located on the front side of the adhesive laminated tape (20) is peeled off from the adhesive resin layer (23) and peeled off with a tensile force (P) in an oblique direction. 37) is continuously peeled off along the perforation line (16) and opened to obtain a laminated material having a reverse concave adhesive resin layer (23) on the outermost surface on the back side. Fold it through the crease (41) so that the reverse concave adhesive resin layer (23) is on the inside. Returns the inverse concave adhesive resin layer (23) and resealed by crimping the base layer surface of the front side of the laminate material, used.

It is a top view which shows one Embodiment of the resealable packaging bag of this invention. 1A is a cross-sectional view taken along line AA ′ in FIG. 1, FIG. 1B is a cross-sectional view taken along line BB ′ in FIG. 1, and FIG. 1C is a cross-sectional view taken along line CC ′ in FIG. . It is a perspective view which shows one Embodiment of the laminated material used for the resealable packaging bag of this invention. It is a perspective view which shows one Embodiment of the resealable laminated tape used for the resealable packaging bag of this invention. (A)-(b) is explanatory drawing which shows one example of use of the resealable packaging bag of this invention. It is a perspective view which shows one Embodiment of the conventional resealable packaging bag.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,10 '... Laminating material 11, 11' ... Base material layer 12 ... Intermediate | middle film layer 13, 13 '... Sealant layer 14, 14', 15, 15 '... Adhesive layer 16 ... Perforation line 20 ... Resealable lamination Tape 21 ... Base film layer 22 ... Co-extruded film 23, 23 '... Adhesive resin layer 24, 25 ... Polyolefin resin layer 26 ... Sealant layer 27, 28 ... Adhesive layer 30, 30' ... Resealable packaging bag 31 ... Bag body portion 32, 32 '... Opening portion 33,33' ... Upper seal portion 34,34 ', 35,35' ... Side seal portion 36 ... Unsealed portion 37, 37 '... Incision 38 ... Seal portion 40 ... Gap 41 ... Crease P ... Pulling force

Claims (2)

  It consists of two laminated materials, front and back, and has an upper seal part on one side of the bag body part, an opening part on the opposite side, side seal parts on both sides, the upper seal part And a mouth-shaped unsealed portion at the corner portion where one side seal portion intersects, and has a notch at the end of the side seal portion adjacent to the upper seal portion on the unsealed portion side, It is a resealable packaging bag having a perforation line extending in parallel with the upper seal part from the front end to the end of the other side seal part, and the unsealable part is a resealable laminate of two laminated materials on the front and back The tape is sandwiched from both sides, and the upper seal part and the side seal parts on both sides are sandwiched between two sides of the front and back laminate materials. And made of sealed material Reclosure of the packaging bag according to claim.   The laminate material comprises a laminate in which an intermediate film layer comprising a perforated line at a predetermined interval perpendicular to the film flow direction and a sealant layer are sequentially laminated on one surface of the substrate layer, and the reseal Laminating tape has a three-layer coextrusion film layer made by laminating a polyolefin resin layer on both sides of an adhesive resin layer on one side of the base film layer, and a sealant layer on the other side The resealable packaging bag according to claim 1, comprising a body.

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