Filling container based on composite paper packaging

Abstract

A filling container based on composite paper packaging comprises a cylindrical paper tube and a mouth part, the connection position of the cylindrical paper tube is connected through heat sealing or PP strips, the cylindrical paper tube is made of a paper-based composite sheet, and the paper-based composite sheet comprises a paper-based layer and a heat sealing bonding layer arranged on the inner side of the paper-based layer. And the cylindrical paper tube and the mouth part are heated and welded to form sealing by means of the heat-seal bonding layer. Therefore, the sealing is firm, the high-barrier layer is used for preventing leakage and avoiding light, the barrier property is good, and the packaging bag can be widely used for packaging foods, sauces, daily chemical products and the like, so that the packaging bag has excellent performance in the aspects of technicality, practicability and economical efficiency.

Description

Technical Field

[0001] The utility model relates to a filling container based on composite paper packaging. Background Art

[0002] Market research and patent search show that flexible packaging refers to packaging containers such as daily chemical tubes or food tubes that can be squeezed out. Currently, plastic, PP, and PVC hoses are generally used, which are increasingly incompatible with the increasing environmental protection. Recyclable materials based on paper are increasingly valued by governments. The EU is more stringent in restricting plastics, and many plastic products have been banned. For this reason, we have developed a filling container based on composite paper packaging to reduce the use of plastics. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a filling container based on composite paper packaging, comprising a cylindrical paper tube and a mouth, wherein the cylindrical paper tube is heat-sealed or connected with a PP strip at the joint, wherein the cylindrical paper tube is made of a paper-based composite sheet material, wherein the paper-based composite sheet material comprises a paper base layer and a heat-sealing adhesive layer arranged on the inner side of the paper base layer, and the cylindrical paper tube and the mouth are heat-fused to form a seal by means of the heat-sealing adhesive layer.

[0004] In one or more embodiments of the present invention, the mouth is integrally formed of PE material; the heat-sealing adhesive layer is made of PE, ethylene copolymer or CPP material.

[0005] In one or more embodiments of the present invention, the outer side of the paper base layer is provided with any one of a printing layer, a printing cold foil layer and a printing laser cold transfer layer.

[0006] In one or more embodiments of the present invention, a high barrier layer is provided on the inner side of the paper base layer and between the paper base layer and the heat-sealing adhesive layer; the high barrier layer is aluminum foil or silicon oxide PET film or aluminum oxide PET film or aluminum oxide BOPP film or silicon oxide BOPP film or PVDC nylon film or a multi-layer co-extruded material layer.

[0007] In one or more embodiments of the present invention, the co-extruded material is a combination of PE, PA, EVOH and TIE; there is a bonding layer between the high barrier layer and the heat-sealing bonding layer, and the bonding layer is made of any one of PE, AE, EMAA, EAA, AC agent, and adhesive, and the adhesive is glue.

[0008] In one or more embodiments of the present invention, the thickness of the paper base layer is 0.05 to 0.25 mm.

[0009] In one or more embodiments of the present invention, the heat-sealing adhesive layer enables the hot-melt welding temperature of the cylindrical paper tube and the shoulder of the mouth to be between 200 and 300°C.

[0010] In one or more embodiments of the utility model, a printing layer or a printed cold stamping layer or a printed laser cold transfer layer or a metal film layer or an adhesive layer is provided on the outer side of the paper base layer, and an adhesive layer, an aluminum foil layer, an adhesive layer, a high barrier layer and a heat sealing layer are provided on the inner side; the adhesive layer is made of any one or any combination of PE, AE, EMAA, EAA, AC agent, and adhesive; the high barrier layer is any one of PET film, silicon oxide PET film, aluminum oxide PET film, PVDC coated PET film, BOPP film, aluminum oxide BOPP film, silicon oxide BOPP film, PVDC coated BOPP film, PA film, PVDC nylon film or a multi-layer co-extruded material layer.

[0011] In one or more embodiments of the present invention, the metal film layer is an aluminum foil layer, a laser film or an aluminized film; the thickness ratio of the paper base layer, the adhesive layer, the high barrier layer, the bonding material layer and the bonding layer is 50 to 300:1 to 20:5 to 20:1 to 20:20 to 60.

[0012] In one or more embodiments of the present invention, a printing layer or a printed cold foil or a printed laser cold transfer layer or a metal film layer or an adhesive layer is provided on the outer side of the paper base layer, and an adhesive layer, a high barrier layer and a heat sealing layer are provided on the inner side; the adhesive layer is made of any one or any combination of PE, AE, EMAA, EAA, AC agent and adhesive; the high barrier layer is any one of PET film, silicon oxide PET film, aluminum oxide PET film, PVDC coated PET film, BOPP film, aluminum oxide BOPP film, silicon oxide BOPP film, PVDC coated BOPP film, PA film, PVDC nylon film or a multi-layer co-extruded material layer.

[0013] Compared with the background technology, the utility model has the following effects: adopting the above technical scheme, the amount of plastic used is greatly reduced, energy-saving and environmental protection is achieved, the sealing is firm, leakage-proof and light-proof, and the barrier performance is good, and the utility model can be widely used in the packaging of food, sauces, daily chemical products, etc. Therefore, it has superior performance in terms of technology, practicality and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a filling container based on composite paper packaging in one embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the connection of the cylindrical paper tube in the filling container based on the composite paper packaging in one embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of a connection point of a cylindrical paper tube in a filling container based on composite paper packaging in another embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of a paper-based composite sheet in a filling container based on composite paper packaging in one embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of a paper-based composite sheet in a filling container based on composite paper packaging in another embodiment of the utility model;

[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of a paper-based composite sheet in a filling container based on composite paper packaging in another embodiment of the utility model;

[0020] Figure 7 This is a schematic diagram of the cross-sectional structure of a paper-based composite sheet in a filling container based on composite paper packaging in another embodiment of the utility model;

[0021] Figure 8 This is a schematic diagram of the cross-sectional structure of a paper-based composite sheet in a filling container based on composite paper packaging in another embodiment of the utility model;

[0022] Those skilled in the art can understand the shapes, structures and schemes obtained from the figures shown in the drawings. The various components of the drawings are not necessarily to scale, and the sizes of the various components and elements of the drawings can be enlarged or reduced to more clearly illustrate the implementation scheme of the utility model described in this article. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below. The embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0024] The orientation shown in the drawings cannot be understood as limiting the specific protection scope of the present invention, but is only provided for reference and understanding of the preferred embodiments. The product components shown in the drawings may be changed in position, increased in number, or simplified in structure.

[0025] The "connection" described in the specification and the mutual "connection" relationship of the components shown in the drawings can be understood as a fixed connection or a detachable connection or an integral connection; it can be a direct connection or a connection through an intermediate medium. Ordinary technicians in this field can understand the connection relationship according to the specific circumstances and can derive different implementation methods in an appropriate manner such as screwing, riveting, welding, clamping or embedding.

[0026] The directional words such as up, down, left, right, top, bottom, etc. described in the specification and the directions shown in the drawings, the components can be directly in contact or through other features between them; for example, above can be directly above or obliquely above, or it only means higher than other objects; other directions can also be understood by analogy. The following is a further description of the specific implementation methods of the utility model in conjunction with the drawings of the specification, so that the technical solution and beneficial effects of the utility model are clearer and more explicit.

[0027] The following references Figure 1-4 The specific embodiments shown are described, however, those skilled in the art will easily understand that the detailed description given herein with respect to these drawings is for illustrative purposes only and should not be understood as limiting. This embodiment provides a filling container based on composite paper packaging, including a cylindrical paper tube 1 and a mouth 2, the cylindrical paper tube 1 is heat-sealed at the joint 10 or connected with a PP strip 100, the cylindrical paper tube 1 is made of a paper-based composite sheet, the paper-based composite sheet includes a paper base 101 and a heat-sealing adhesive layer 102 arranged on the inner side of the paper base, and the cylindrical paper tube 1 and the mouth 2 are heat-fused to form a seal by means of the heat-sealing adhesive layer 102. In order to make the heat seal more reliable, the outer side of the mouth 2 has a reinforced fusion extension 21, and the surface of the reinforced fusion extension 21 is integrated with the heat-sealing adhesive layer 102; the heat-melting temperature of the heat-sealing adhesive layer 102 and the reinforced fusion extension 21 is between 200 and 300°C.

[0028] The mouth portion 2 can be integrally formed of PE material; the heat-sealing adhesive layer 102 can be made of PE, ethylene copolymer or CPP material, etc.

[0029] See also Figure 5 As shown, in different embodiments, the outer side of the paper base layer 101 is provided with any one of a printing layer 103, a printing cold foil layer 104 and a printing laser cold transfer layer 105, or any combination thereof.

[0030] See also Figure 6 As shown, in different embodiments, a high barrier layer 106 is provided inside the paper base layer 101 and between the paper base layer 101 and the heat-sealing adhesive layer 102; the high barrier layer 106 can be made of aluminum foil, silicon oxide PET film, aluminum oxide PET film, aluminum oxide BOPP film, silicon oxide BOPP film, PVDC nylon film, or a multi-layer co-extruded material layer. The co-extruded material can be any combination of PE, PA, EVOH, and TIE;

[0031] See also Figure 7As shown, in different embodiments, there is an adhesive layer 107 between the high barrier layer 106 and the heat-sealing adhesive layer 102, and the material of the adhesive layer 107 includes any one or any combination of PE, AE, EMAA, EAA, AC agent, and adhesive, and the adhesive is glue.

[0032] Figure 8 As shown, in different embodiments, the outer side of the paper base layer 101 is provided with a printing layer 103, a printed cold stamping layer 104 and a printed laser cold transfer layer 105 or a metal film layer 108 or an adhesive layer 107, and the inner side is provided with an adhesive layer 107, an aluminum foil layer 109, an adhesive layer 107, a high barrier layer 106 and a heat-sealing adhesive layer 102; the manufacturing material of the adhesive layer 107 includes any one or any combination of PE, AE, EMAA, EAA, AC agent, and adhesive; the high barrier layer is any one of PET film, silicon oxide PET film, aluminum oxide PET film, PVDC coated PET film, BOPP film, aluminum oxide BOPP film, silicon oxide BOPP film, PVDC coated BOPP film, PA film, PVDC nylon film or a multi-layer co-extruded material layer.

[0033] The metal film layer 108 is an aluminum foil layer, a laser film or an aluminum-plated film; the thickness ratio of the paper base layer, the adhesive layer, the high barrier layer, the bonding material layer and the bonding layer is 50 to 300: 1 to 20: 5 to 20: 1 to 20: 20 to 60. The thickness of the paper base layer is 0.05 to 0.3 mm.

[0034] In summary, in combination with all the figures, when used, due to the use of a composite material of a paper substrate, the use of plastic is greatly reduced, energy saving and environmental protection are achieved, and the heat-sealing adhesive layer 102 is used to heat and melt the outer wall of the mouth 2 to form a seal, so that the seal is firm, and the high barrier layer 106 is used to prevent leakage and light, and the barrier performance is good. It can be widely used in the packaging of food, sauces, daily chemical products, etc. Therefore, it has superior performance in terms of technology, practicality and economy.

[0035] For the purpose of illustration, the foregoing description uses specific nomenclature to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that specific details are not required in order to practice the embodiments. Those skilled in the art should understand that the present invention is not limited to the specific embodiments described above, and improvements and substitutions based on the present invention using known techniques in the art fall within the scope of protection of the present invention and should be defined by the claims.

Claims

1. A filling container based on composite paper packaging, characterized in that: It includes a cylindrical paper tube and a mouth, and the cylindrical paper tube is heat-sealed or connected with a PP strip at the joint. The cylindrical paper tube is made of a paper-based composite sheet, and the paper-based composite sheet includes a paper base layer and a heat-sealing adhesive layer arranged on the inner side of the paper base layer. With the help of the heat-sealing adhesive layer, the cylindrical paper tube and the mouth are heat-fused to form a seal.

2. The filling container based on composite paper packaging according to claim 1 is characterized in that: The mouth is made of PE material and is integrally formed; the heat-sealing adhesive layer is made of PE, ethylene copolymer or CPP material.

3. The filling container based on composite paper packaging according to claim 1 is characterized in that: The outer side of the paper base layer is provided with any one of a printing layer, a printing cold stamping layer and a printing laser cold transfer layer.

4. The filling container based on composite paper packaging according to claim 1 is characterized in that: A high barrier layer is provided on the inner side of the paper base layer and between the paper base layer and the heat-sealing adhesive layer; the high barrier layer is aluminum foil or silicon oxide PET film or aluminum oxide PET film or aluminum oxide BOPP film or silicon oxide BOPP film or PVDC nylon film or a multi-layer co-extruded material layer.

5. The filling container based on composite paper packaging according to claim 4 is characterized in that: There is an adhesive layer between the high barrier layer and the heat-sealing adhesive layer. The material of the adhesive layer includes any one of PE, AE, EMAA, EAA, AC agent, and adhesive. The adhesive is glue.

6. The filling container based on composite paper packaging according to claim 1 is characterized in that: The thickness of the paper base layer is 0.05 to 0.25 mm.

7. The filling container based on composite paper packaging according to any one of claims 1 to 6, characterized in that: The heat-sealing adhesive layer enables the hot-melt welding temperature of the cylindrical paper tube and the shoulder of the mouth to be between 200 and 300°C.

8. The filling container based on composite paper packaging according to claim 1 is characterized by: The outer side of the paper base layer is provided with a printing layer or a printed cold foil or a printed laser cold transfer layer or a metal film layer or an adhesive layer, and the inner side is provided with an adhesive layer, an aluminum foil layer, an adhesive layer, a high barrier layer and a heat sealing layer; the manufacturing material of the adhesive layer includes any one of PE, AE, EMAA, EAA, AC agent and adhesive; the high barrier layer is any one of PET film, silicon oxide PET film, aluminum oxide PET film, PVDC coated PET film, BOPP film, aluminum oxide BOPP film, silicon oxide BOPP film, PVDC coated BOPP film, PA film, PVDC nylon film or multi-layer co-extruded material layer.

9. The filling container based on composite paper packaging according to claim 8, characterized in that: The metal film layer is an aluminum foil layer, a laser film or an aluminum-plated film; the thickness ratio of the paper base layer, the adhesive layer, the high barrier layer, the bonding material layer and the bonding layer is 50 to 300:1 to 20:5 to 20:1 to 20:20 to 60.

10. The filling container based on composite paper packaging according to claim 9, characterized in that: The outer side of the paper base layer is provided with a printing layer or a printed cold foil or a printed laser cold transfer layer or a metal film layer or an adhesive layer, and the inner side is provided with an adhesive layer, a high barrier layer and a heat sealing layer; the manufacturing material of the adhesive layer includes any one of PE, AE, EMAA, EAA, AC agent and adhesive; the high barrier layer is any one of PET film, silicon oxide PET film, aluminum oxide PET film, PVDC coated PET film, BOPP film, aluminum oxide BOPP film, silicon oxide BOPP film, PVDC coated BOPP film, PA film, PVDC nylon film and multi-layer co-extruded material layer.

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