JP2008081196A - Composite container of paper and film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-standing composite container of a paper and a film, which houses a liquid content and has a spout portion, enables smooth and easy pouring of the content to another container while keeping a stable flow to the last without clogging caused by a bend of the spout portion, and is manufactured inexpensively. <P>SOLUTION: The composite container with the spout portion is constructed by combining a paper base material laminated sheet having a hot melt-adhesive resin layer laminated on the inner layer and a plastic film laminated sheet having a hot melt-adhesive resin layer laminated on the inner layer, and hot melt-bonding the peripheral edges, wherein the spout portion is formed by superposing the hot melt-adhesive resin layer surface of the paper base material laminated sheet composed of paperboard having a basis weight of 100 to 500 g/m<SP>2</SP>as the base paper material on the hot melt-adhesive resin layer surface of the plastic film laminated sheet face to face, and hot melt-bonding the peripheral edges. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a composite container of paper and film used for hermetically wrapping contents having fluidity such as liquid and powder, and more specifically, a spout having a self-supporting property and easy to pour the contents when opened. The present invention relates to a composite container of paper and film provided with a section.

  Conventionally, as a packaging container for storing liquid contents such as liquid detergents, kitchen detergents, softeners, and other liquid contents such as sauces, soy sauce, dressings, juices, etc. Widely used. On the other hand, in order to save resources and reduce the amount of waste due to the growing concern about environmental issues related to the increase in waste, the periphery of the sheet is thermally bonded using a plastic film laminated sheet, and liquid detergent and kitchen detergent. , A container for storing toiletries such as softeners, and provided with a spout portion protruding outward at the top of the container, and in use, the protruding spout portion is cut with scissors etc. For example, a self-supporting bag is widely used as a refill container with a spout that can be easily poured into a plastic bottle with a cap and refilled.

  Such a self-standing bag with a spout is required to be able to smoothly and easily pour the contents, and to pour out the remaining contents while maintaining a stable flow until the end. For example, a film Cylindrical projections are formed by deep drawing at the corners of the bag made of material, and a cylindrical plastic small tube is inserted into the projections to provide a spout, or two synthetic resin films A refilling liquid storage container in which a projecting spout portion is provided in a part of the periphery of the container, and a plastic pipe is embedded between two synthetic resin films constituting the extraction portion. (See, for example, Patent Documents 1 and 2).

  However, since a plastic molding member is used for the spout portion, a process for molding and mounting the member is required, which increases costs and sets up the film material so that inventory management is possible. There were problems such as taking time and effort.

  In addition, as a means for eliminating the above cost increase, a bag is disclosed that includes a reinforcing mechanism in which a spout is provided at a corner of a bag made of a synthetic resin film and a convex linear emboss is applied to the outside (for example, And Patent Document 3). However, although the bag disclosed in Patent Document 3 has no labor for inventory management due to the absence of the molding member and the cost of the member has been improved, it is necessary to perform embossing to form a reinforcing mechanism. There was a problem that a mold for processing was necessary and the cost was high.

To solve these problems, it consists of a bag-shaped body and a spout provided so as to protrude outwardly from the top of the body, and the body is a paperboard or a synthetic material with rigidity. One side wall forming sheet in which a thermal adhesive resin layer is laminated on one side of a base sheet made of a resin sheet, and the other side wall forming sheet having a thermal adhesive resin layer on one side, the thermal adhesive resin layer is on the inner side. The spout forming pieces are formed so as to be opposed to each other, and are formed by thermally bonding the peripheral portions facing each other, and the spout is formed so as to protrude outward at the upper part of each side wall forming sheet. A self-supporting packaging bag is disclosed that is formed by superimposing each other and thermally bonding these peripheral portions (see, for example, Patent Document 4). The technique disclosed in Patent Document 4 eliminates the need for a molding member and eliminates the need for embossing, thus eliminating the high cost and complexity of management, but the shape retention of the side wall forming sheet is not sufficient. In some cases, the spout has a bend, and the spout closes around the bend at the time of pouring, and the contents cannot be poured. Further, when the internal volume becomes a large volume of 1 l or more, there is a problem that the content of the side wall forming sheet cannot be supported by the rigidity of the side wall forming sheet, and the side wall forming sheet is deformed at the time of pouring and is difficult to pour out.
JP-A-5-132969 Japanese Patent Laid-Open No. 9-240692 JP 7-2260 A JP 11-310248 A

  Accordingly, the present invention has been made to solve the above-described problem, and is used when a content is poured into another container or the like in a paper / film composite container having a spout portion for storing the liquid content. It is to provide a self-supporting paper and film composite container that can be smoothly and easily poured out at a low cost while maintaining a stable flow until the end, without being bent and clogging at the outlet. .

In order to achieve the above object, the present invention according to claim 1 includes a paper base laminate sheet in which a heat adhesive resin layer is laminated at least on a paper base and an inner layer, and at least thermal adhesiveness on the inner layer. A composite container having a spout portion configured by combining a plastic film laminated sheet on which a resin layer is laminated and thermally bonding the periphery thereof, wherein the spout portion is a paperboard having a basis weight of 100 to 500 g / m ² . The heat-adhesive resin layer surface of the paper substrate laminate sheet used as the paper substrate and the heat-adhesive resin layer surface of the plastic film laminate sheet are overlapped with each other, and the periphery is thermally bonded. This is a composite container of paper and film.

  The present invention according to claim 2 is the composite container of paper and film according to claim 1, wherein the heat-adhesive resin layer surface of the paper base laminate sheet and the heat-adhesive resin layer surface of the plastic film laminate sheet are opposed to each other. And forming a pair of body forming sheets, and forming a bottom forming sheet made of a plastic film laminate having a heat adhesive resin layer on the inner layer at the lower end between the pair of body forming sheets. The outer surface of the pair of body forming sheets and the bottom forming sheet are thermally bonded to each other, and the spout portion is used for forming the pair of body parts. It is formed so that it may protrude outward from the upper part of the sheet.

  The invention according to claim 3 is the composite container of paper and film according to claim 1, wherein the body portion is formed by arranging the paper base laminate sheet and the plastic film laminate sheet in front and back, A composite container in which the heat-adhesive resin layer surfaces of the laminated sheet are opposed to each other and the periphery is thermally bonded, and the edge portions on both the upper and lower sides of the plastic film laminated sheet are extended and folded inward to vertically gusset And the spout part is formed so as to protrude outward from a part of the end of the composite container.

  According to a fourth aspect of the present invention, in the composite container of paper and film according to the first aspect, the body portion is formed with the heat-adhesive resin layer surfaces of the pair of paper base laminate sheets facing each other in the front and rear. The sheet for forming a gusset portion made of a plastic film laminated material having a heat-adhesive resin layer as an inner layer at the upper end and the lower end between the pair of paper base laminate sheets is folded in the center with the inner layer surface as the outer surface. And then thermally bonding the opposing peripheral portions of the pair of paper base laminate sheets and the gusset portion forming sheet, and upper portions of either of the pair of paper base laminate sheets forming the body portion Further, the spout part is formed so as to protrude outward.

In the composite container of paper and film of the present invention, the spout portion overlaps a paper base laminate sheet and a plastic film laminate sheet with a paper base having a basis weight of 100 to 500 g / m ² as a paper base. The paper base laminate sheet has a shape-retaining property, and the spout portion is formed by folding the paper base laminate sheet along the center line as the center line in the pouring direction of the spout portion. The liquid contents can be poured out, and the outlet portion is not bent and blocked, and the liquid can be poured out smoothly and easily while maintaining a stable flow until the end. Further, a molding member is not required, and embossing is not required, so that it can be manufactured at a low cost.

The composite container of paper and film according to claim 2, wherein a paper base laminate sheet having a paper base of 100 to 500 g / m ² as a paper base on one side and a plastic film laminate sheet on the other side are disposed opposite to each other. Since it is formed of a sheet for forming a bottom portion composed of a sheet for forming and a plastic film laminate, the paper base laminate sheet has rigidity and is easy to pour out without being deformed during pouring. In addition, since the other body forming sheet is provided with a plastic film laminated sheet, by providing transparency, it is easy to visually recognize the contents and can give the consumer a sense of security and self-sustainability. Yes, the display effect at the store is improved.

The composite container of paper and film according to claim 3 is configured so that a paper base laminate sheet and a plastic film laminate sheet having a paper base having a basis weight of 100 to 500 g / m ² as opposed to each other are opposed to each other. Because the edges on both sides are extended and folded inside to provide upper and lower gussets, and the periphery is thermally bonded, the upper and lower gussets expand and form a cylindrical container when filled with contents The capacity of the contents can be increased and the contents can become independent. Further, the paper base laminate sheet has rigidity and is easy to pour out without being deformed at the time of pouring. Furthermore, by imparting transparency to the plastic film laminated sheet of the body forming sheet, the contents can be easily viewed, giving the consumer a sense of security.

  The composite container of paper and film according to claim 4 is provided with a gusset portion by inserting a pair of paper base laminate sheets facing each other and inserting a gusset portion forming sheet made of a plastic film laminate at the upper and lower ends. Since the periphery is thermally bonded, when the contents are filled, the upper and lower gusset portions spread to form a can-shaped container, so that the contents can be increased in capacity and self-supporting. Further, the pair of paper base laminated sheets at the front and rear has rigidity, and the laminated sheet is not deformed at the time of pouring, and is easy to pour and easy to hold by hand.

The above-described present invention will be described below with reference to the drawings.
1 is a front view showing a first embodiment of a paper and film composite container according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a body forming sheet comprising a plastic film laminated sheet. 4 is a developed view showing a body forming sheet made of a paper base laminate sheet, FIG. 5 is a perspective view showing a use state of a composite container of paper and film, and FIG. 5 is a cross-sectional view taken along line BB of FIG. 5, FIG. 7 is a cross-sectional view taken along line CC of FIG. 5, FIG. 8 is a front view showing a second embodiment of the paper / film composite container according to the present invention, and FIG. 10 is a front view showing a third embodiment of the composite container of paper and film according to the present invention, FIG. 11 is a sectional view taken along the line EE of FIG. 10, and FIG. 12 is a third embodiment. The perspective view which shows the use condition of a form is shown.

  1st Embodiment of 1st Embodiment of the composite container of the paper and film concerning this invention is described using FIGS. As shown in FIGS. 1 and 2, the paper / film composite container 1 according to the present invention is, for example, for supplying a liquid detergent to a bottle containing the liquid detergent, and the liquid detergent L is accommodated therein. And a cylindrical spout portion 3 communicating with the inside of the trunk portion 2 formed so as to protrude outward from the upper portion of the trunk portion 2. The body part 2 and the spout part 3 are formed by laminating a heat-adhesive resin layer on at least an inner layer and a heat-adhesive resin layer surface of a paper base laminate sheet 4 in which a heat-adhesive resin layer is laminated at least on a paper base material and an inner layer. The plastic film laminated sheet 5 has a heat adhesive resin layer faced oppositely to form a pair of body part forming sheets 6, and a heat adhesive resin layer as an inner layer at the lower end between the pair of body part forming sheets 6. A bottom forming sheet 7 made of a plastic film laminate having the inner layer surface as an outer surface is inserted by being folded in the center, and the pair of body forming sheets 6 and the peripheral portion facing the bottom forming sheet 7 are thermally bonded. It is formed by doing. In the figure, the hatched portion represents the thermal bonding portion. FIG. 1 is a front view of the plastic film laminated sheet 5 on the front side.

  As shown in FIG. 3, the plastic film laminated sheet 5 and the bottom forming sheet 7 constituting the body forming sheet 6 on the front side are formed by a series of plastic film laminated sheets. This plastic film laminated sheet is formed by laminating a heat-adhesive resin layer on one side of a synthetic resin film made of OPP (stretched polypropylene), ONY (stretched nylon), PET (polyethylene terephthalate), or the like. As the thermal adhesive resin, PE (polyethylene) such as CPP (unstretched polypropylene), LDPE (low density polyethylene), LLDPE (linear low density polyethylene), or the like is used. In addition, a barrier layer such as aluminum foil, aluminum vapor deposition, or silica vapor deposition may be laminated between the synthetic resin film and the heat-adhesive resin layer, and may be selected according to the physical properties required for the contents.

  The plastic film laminated sheet 5 has a spout forming piece 5a formed on the upper part so as to protrude outward. In addition, on the surface (outer surface) opposite to the heat-adhesive resin layer in the plastic film laminated sheet 5, cosmetic printing such as a trade name and a design is applied. A pair of notches 7b and 7b are provided on both side edges of the bottom forming sheet 7 so as to be symmetric with respect to a fold line 7a provided at the center in the vertical direction of the bottom forming sheet 7. Yes.

Paper base laminated sheet 4 constituting the body portion forming sheet 6 on the back side, OPP on one surface of the paperboard having a basis weight of 100 to 500 g / m ² (oriented polypropylene), ONY (oriented nylon), PET (polyethylene terephthalate) It is formed by laminating a heat-adhesive resin layer on one side of a synthetic resin film made of or the like. CPP, PE, etc. are used for the heat-adhesive resin layer in the same manner as the body forming sheet 6. Moreover, it is good also as what laminated | stacked said barrier layer with the physical property requested | required of the content. As shown in FIG. 4, the paper base laminate sheet 4 has a spout forming piece 4 a formed on the upper part so as to protrude outward. Note that the spout forming piece 4a may be provided with a crease in the vertical direction at the center. Moreover, you may provide a pair of crease | fold in the up-down direction from the lower end part to the substantially center part of the up-down direction. The outer surface of the paperboard of the paper base laminate sheet 4 is subjected to decorative printing such as a usage method and a design.

  The paper base laminate sheet 4 and the plastic film laminate sheet 5 and the bottom forming sheet 7 have the thermoadhesive resin layer inside, and the base of the paper base laminate sheet 4 is the plastic film laminate sheet 5 and the bottom forming sheet 7. So as to coincide with the boundary line 8. Then, the bottom forming sheet 7 is folded inward along the boundary line 8 and is also folded outward along the folding line 7a (see FIG. 2). The paper base laminate sheet 4, the plastic film laminate sheet 5 and the bottom forming sheet 7 are used to form the bottom and trunk portions of the spout 3 at the upper end of the paper base laminate sheet 4 and the plastic film laminate sheet 5. The peripheral part of the sheet 6 except for the upper end with the left and right ends is thermally bonded to form a bag and filled with a liquid detergent, and then the paper base laminate 4 and the plastic film laminate 5 The upper end side is thermally bonded and the liquid detergent is sealed.

  Since the bottom forming sheet 7 has a heat-adhesive resin layer only on one side, the inner surfaces of the bottom forming sheet 7 when folded are not bonded to each other, but the bottom forming sheet 7 Since the notches 7b and 7b are provided on both side edges, both side ends of the lower ends of the paper base laminate 4 and the plastic film laminate sheet 5 are bonded to each other via the notches 7b and 7b. Further, as shown in FIG. 1, the paper base laminate sheet 4 and the plastic are provided in the left and right side end thermal bonding portions of the composite container 1 of paper and film from the end portion in the left and right direction to about half of the width of the side end thermal bonding portion. Cuts 9a, 9a penetrating the film laminate sheet 5 are provided at the top and bottom, and the angled paper base laminate sheet 4 and the plastic film laminate sheet 5 are penetrated on the inner side connecting the inner sides of the side edge thermal bonding portions of the cuts 9a, 9a. A perforation 9b is provided. It is preferable that the length between the cuts 9a and 9a is such that four fingers other than the thumb of one hand can enter. By providing the cuts 9a and perforations 9b in this way, the paper and film composite container 1 can be easily grasped with one hand and slipped down when the liquid detergent contained in the paper and film composite container 1 is supplied to the bottle. Can be prevented, and can be poured with peace of mind.

The paper base laminate sheet 4 constituting the body forming sheet 6 uses a paperboard having a basis weight of 100 to 500 g / m ² , so that the total weight of the composite container 1 of paper and film (paper base laminate) The paper base laminate sheet 4 constituting the composite container 1 of paper and film so that the weight occupied by the paperboard is 50% or more with respect to the sheet 4, the plastic film laminate sheet 5 and the bottom forming sheet 7), The laminated structure of the plastic film laminated sheet 5 and the bottom forming sheet 7 can be easily designed. As a result, the plastic film laminated sheet 5 is classified as a specific paper container of the Containers and Packaging Recycling Law. There is an effect that the commissioned unit price to the designated corporation is about half that of the plastic container and packaging unit.

Next, the usage method of the composite container 1 of the paper and film comprised as mentioned above is demonstrated. The composite container 1 of paper and film filled with contents can be made self-supporting as shown in FIG. 5 by flattening the bottom forming sheet 7 and is displayed stand-alone at a store in the store. A consumer who has purchased the composite container 1 of paper and film cuts and opens the tip of the spout 3 with scissors and folds the spout formation piece 4a in the center parallel to the spout direction. The liquid detergent L in the container can be poured out. The spout forming piece 4a has shape retention because the paperboards are laminated, and maintains a state of being folded in a mountain as shown in FIG. And the area | region enclosed by the notches 9a and 9a and the perforation 9b provided in the trunk | drum 2 is held with one hand from the paper base material laminated sheet 4 side, the bottle is held with the other hand, and the tip of the spout part 3 Part is inserted into the inlet of the bottle, and the body part 2 is lifted with one hand to inject the liquid detergent L into the bottle. Thus, since the paper base laminate sheet uses a paperboard having a basis weight of 100 to 500 g / m ² , it has rigidity and does not deform even with the weight of the liquid detergent L, and can be poured with one hand with confidence. .

  In the above embodiment, the plastic film laminated sheet 5 and the bottom forming sheet 7 constituting the body forming sheet 6 are formed of a series of sheets of the same material. However, the present invention is not limited thereto. The plastic film laminated sheet 5 and the bottom forming sheet 7 may be separated.

  Next, a second embodiment of the paper / film composite container according to the present invention will be described with reference to FIGS. As shown in FIGS. 8 and 9, the paper / film composite container 21 according to the present invention has a bag-like body portion 22 in which a liquid detergent L is accommodated and an upper portion of the body portion 22 facing outward. It consists of a cylindrical spout 23 that communicates with the interior of the barrel 22 formed so as to protrude. The body part 22 and the spout part 23 are formed by laminating a heat-adhesive resin layer on at least an inner layer and a heat-adhesive resin layer surface of a paper substrate laminate sheet 24 in which a heat-adhesive resin layer is laminated on at least a paper base material and an inner layer. The heat-adhesive resin layer surfaces of the plastic film laminated sheet 25 are arranged to face each other to form a pair of body forming sheets 26, and the upper and lower end edges of the plastic film laminated sheet 25 are extended and folded inward. Gusseted portions G and G are provided on the upper and lower sides, and the periphery is thermally bonded.

  Laminate materials used for the paper base laminate sheet 24 and the plastic film laminate sheet 25 constituting the body forming sheet 26 are the same as those in the first embodiment, and a description thereof will be omitted.

  In addition, since the plastic film lamination sheet 25 has a heat-adhesive resin layer only on one surface, the inner surfaces when the gusset portions G and G are bent do not adhere to each other. Therefore, notches g and g are provided on both side edges of the gusset portions G and G, and both end portions of the upper and lower ends of the paper base laminate sheet 24 and the plastic film laminate sheet 25 are mutually connected via the notches g and g. It is trying to adhere to. Although not shown, the paper base material is laminated to the left and right side end thermal bonding portions of the composite container 1 of paper and film from the left and right ends to about half the width of the side end thermal bonding portions, as in the first embodiment. Cuts that pass through the sheet 24 and the plastic film laminated sheet 25 are provided above and below, and the paper base laminated sheet 24 and the plastic film laminated sheet 25 are penetrated by a straight line or a curve connecting the inner sides of the thermal bonding portions at the side edges of the cut or a combination thereof. Perforations may be made.

  Thus, 2nd embodiment can be made into a larger volume than 1st embodiment by providing the gusset parts G and G up and down.

  Next, a third embodiment of the composite container of paper and film according to the present invention will be described with reference to FIGS. As shown in FIGS. 10 and 11, the paper / film composite container 31 according to the present invention protrudes outwardly from a body part 32 in which a liquid detergent L is accommodated and an upper part of the body part 32. It consists of a cylindrical spout part 33 communicating with the inside of the formed body part 32. The body portion 32 is a paper having a pair of paper base laminate sheets 34 and a spout forming piece 34 ′ a that is slightly longer in the vertical direction than the paper base laminate sheets 34 and protrudes outward at the upper end side. The bottom surface between the pair of paper substrate laminate sheets 34, 34 'is formed by making the heat-adhesive resin layer surface of the substrate laminate sheet 34' face each other and aligning the lower end sides of the paper substrate laminate sheets 34, 34 '. A sheet 41 for forming a gusset part made of a plastic film laminated material having a heat-adhesive resin layer as an inner layer is inserted into the center with the inner layer surface as an outer surface, and a heat-adhesive resin layer is formed as an inner layer at the upper end. A gusset portion forming sheet 42 having a slightly longer dimension in the gusset direction than the gusset portion forming sheet 41 with the inner layer surface as the outer surface and the gusset size being the same as the gusset size 43 at the lower end. The paper base laminate sheet 34 of the gusset portion forming sheet 42 is thermally bonded to the opposing peripheral portions of the pair of paper base laminate sheets 34, 34 ′ and the gusset portion forming sheets 41, 42. A spout forming piece 42a projecting outward is provided at the end opposite to the spout forming piece 34'a, and the spout 33 is formed by thermally bonding the periphery. Yes.

  The laminated material used for the paper base material laminated sheets 34 and 34 ′ constituting the trunk portion 32 and the laminated material used for the gusset forming sheets 41 and 42 are the paper base material laminated sheet 4 and the plastic of the first embodiment. The same laminated material as that used for the film laminated sheet 5 is used.

  Since the gusset portion forming sheets 41 and 42 have the heat-adhesive resin layer only on one side, the inner surfaces when the gusset portions 41G and 42G are bent do not adhere to each other. Therefore, notches g ′ and g ′ are provided on both side edges of the gusset portions 41G and 42G, and the left and right end portions of the upper and lower ends of the paper base material laminated sheets 34 and 34 ′ are notched through the notches g ′ and g ′. To adhere to each other.

  The composite container 31 of paper and film filled with contents as described above becomes a can-like three-dimensional object as shown in FIG. It will be displayed at the store. By using the paper base laminate sheets 34 and 34 'at the front and rear, the self-supporting property becomes more stable, the shape retention is increased, the convenience at the time of pouring is improved, and the gusset made of a plastic film laminate at the upper and lower ends. By providing the part forming sheets 41 and 42, a container capable of increasing the capacity is provided. Others are the same as in the first embodiment, and a description thereof will be omitted.

  Next, the present invention will be described in more detail with reference to the following examples.

Gravure printing is performed on the coated surface of a coated ball with a basis weight of 300 g / m ² using nitrified cotton / polyamide-based ink, and then the opposite surface of the printed surface is subjected to corona discharge treatment, and biaxially stretched to a thickness of 15 μm in advance. A urethane anchor coating agent is applied to the ON surface obtained by laminating the corona discharge treated surface of unstretched low-density polyethylene film (PEF) with a thickness of 80 μm with a dry lamination method (DL) via a nylon film (ON) and a urethane adhesive. While coating, a low-density polyethylene (PE) is hot melt extruded at a thickness of 15 μm with an extrusion laminator, sandwich lamination is performed, and a paper base laminate sheet having a constitution of coated balls 300 g / m ² / PE 15 μm / ON 15 μm / DL / PEF 80 μm Was made.

  Next, the corona discharge treatment surface of a 15 μm thick biaxially stretched nylon film is subjected to gravure printing using urethane ink, and the printed surface is subjected to corona discharge treatment of 80 μm thickness PEF via a urethane adhesive. By laminating, a plastic film laminated sheet having a configuration of ON 15 μm / DL / PEF 80 μm was produced.

  A composite of paper and film having a height of 200 mm, a width of 150 mm, a gusset dimension (folding width) of 30 mm, a spout height of 20 mm, and a spout width of 45 mm using the paper base laminate sheet and the plastic film laminate sheet. Container 1 was prepared and filled with 500 ml of a commercially available liquid detergent and sealed.

  Bag making using the paper base material laminated sheet and plastic film laminated sheet produced in Example 1, height 200 mm, width 150 mm, upper and lower gusset dimensions (folding width) 30 mm, spout portion height 10 mm, spout portion width 45 mm A composite container 21 of paper and film was prepared and filled with 800 ml of a commercially available liquid detergent and sealed.

  The paper base laminate sheet produced in Example 1 was made into a paper base laminate sheet 34, 34 ′, and a plastic film laminate sheet was used as the gusset part forming sheets 41, 42. Height 200mm, width 150mm, height 210mm of paper base laminate sheet 34 ', width 150mm, top and bottom gusset dimensions (folding width) 30mm, spout height of spout 33 provided on paper base laminate sheet 34' A paper / film composite container 31 having a thickness of 10 mm and a spout width of 45 mm was prepared, and 800 ml of a commercial liquid detergent was filled and sealed.

  When the leading ends of the paper and film composite containers 1, 21 and 31 of Examples 1 to 3 were cut from the spout part into the cut bottles with scissors, each composite container was bent at the spout part. It was able to be poured out smoothly and easily with one hand while maintaining a stable flow to the end without generating and blocking. Further, the ratio of the paper to the total weight of only the container in the paper / film composite container 1 of Example 1 is about 59 wt%, the paper / film composite container 21 of Example 2 is about 57%, The composite container 31 of paper and film is about 70%, and is classified as a paper packaging container by the Containers and Packaging Recycling Law.

It is a front view which shows 1st embodiment of the composite container of the paper and film concerning this invention. It is the sectional view on the AA line of FIG. It is an expanded view which shows the sheet | seat for trunk | drum formation which consists of a plastic film lamination sheet, and a bottom part formation sheet. It is an expanded view which shows the sheet | seat for trunk | drum formation which consists of a paper base material lamination sheet. It is a perspective view which shows the use condition of the composite container of paper and a film. FIG. 6 is a sectional view taken along line B-B in FIG. 5. It is CC sectional view taken on the line of FIG. It is a front view which shows 2nd embodiment of the composite container of the paper and film concerning this invention. It is the DD sectional view taken on the line of FIG. It is a front view which shows 3rd embodiment of the composite container of the paper and film concerning this invention. It is the EE sectional view taken on the line of FIG. It is a perspective view which shows the use condition of 3rd embodiment.

Explanation of symbols

1,21,31 Composite container of paper and film 2, 22, 32 Body 3, 23, 33 Outlet 4, 24, 34, 34 'Paper base laminate sheet 4a, 5a, 34'a, 42a Outlet Forming piece 5, 25 Plastic film laminated sheet 6, 26 Body forming sheet 7 Bottom forming sheet 7a Folding line 7b, g, g 'Notch 8 Boundary line 9a Cut 9b Perforation 23, 33 Thermal adhesive resin layer 41 42 Sheet for forming gusset part 43 Gusset dimension G, 41G, 42G Gusset part L Liquid detergent

Claims (4)

It is composed by combining at least the paper base material and the paper base material laminated sheet with the heat adhesive resin layer laminated on the inner layer and the plastic film laminated sheet with the heat adhesive resin layer laminated at least on the inner layer and thermally bonding the periphery. A heat-adhesive resin layer surface of the paper base laminate sheet, wherein the paper base is a paperboard having a basis weight of 100 to 500 g / m ² , A paper-film composite container, wherein the heat-adhesive resin layer surface of a plastic film laminated sheet is overlapped with each other, and the periphery is thermally bonded. The heat-adhesive resin layer surface of the paper base laminate sheet and the heat-adhesive resin layer surface of the plastic film laminate sheet are arranged to face each other to form a pair of body forming sheets, between the pair of body forming sheets. A bottom forming sheet made of a plastic film laminated material having a thermal adhesive resin layer as an inner layer at the lower end is inserted by being folded in the middle with the inner layer surface as an outer surface, and the pair of body forming sheets and the bottom forming The peripheral portion of the sheet for heat treatment is thermally bonded, and the spout portion is formed to protrude outwardly from the upper part of the pair of body forming sheets. A composite container of paper and film according to 1. The body part is a composite container formed by arranging the paper base laminate sheet and the plastic film laminate sheet on the front and back, the thermoadhesive resin layer surface of the laminate sheet is opposed, and the periphery is thermally bonded. The edge portions on both the upper and lower sides of the plastic film laminated sheet are extended and folded inward to provide gusset portions on the upper and lower sides, and the spout portion projects outwardly at a part of the composite container end portion. 2. The paper / film composite container according to claim 1, wherein the composite container is formed as described above. The body part is formed with the heat-adhesive resin layer surfaces of the pair of paper base laminate sheets facing each other in the front and back, and the heat-adhesive resin on the inner layer at the upper end and the lower end between the pair of paper base laminate sheets A gusset portion forming sheet made of a plastic film laminate having a layer is inserted with the inner layer face as an outer surface in a mountain fold, and a pair of the paper base material laminated sheet and the peripheral portion facing the pair of gusset portion forming sheets And the spout portion is formed so as to protrude outwardly at the upper part of one of the pair of paper base laminate sheets forming the body portion. The paper and film composite container according to claim 1.

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