Preparation method of flexible granular ice bag

Abstract

The invention discloses a preparation method of a flexible granular ice bag, which comprises the following steps: a sheet preparation step: compounding an anti-freezing PE (polyethylene) film, an alumina-plated PET (polyethylene terephthalate) film and dry paper together to form an inner flexible sheet; in the forming step, the inner flexible sheet is made into a spherical inner cavity sphere, the inner cavity sphere is filled with liquid, the freezing temperature of the liquid is lower than zero DEG C, and the diameter of the inner cavity sphere is 0.5-1.5 cm; and bagging, specifically, an outer bag body is prepared from the outer flexible sheet, then the multiple inner cavity balls are arranged in the outer bag body, and then a bag opening of the outer bag body is closed. The ice bag prepared through the method has the following beneficial effects that the small frozen particles located in the ice bag can adaptively flow, it is ensured that all point positions of the inflammation swelling position can make full contact with the ice bag, and it is ensured that the cold compress effect is good.

Description

Technical Field

[0001] The present invention relates to the field of medical auxiliary supplies, and particularly to a method for preparing a flexible granular ice pack. Background Art

[0002] An ice pack is a commonly used cold compress product at present. Applying the ice pack to the inflamed and swollen area can reduce pain. However, the current ice pack is a solid block after freezing. Since this solid block cannot be adaptively distorted during use, if the inflamed and swollen area of the user (such as the ankle) is not a flat surface, the current ice pack cannot fully contact the inflamed and swollen area during cold compress, resulting in poor cold compress effect. Summary of the Invention

[0003] In view of the above problems, the present invention provides a method for preparing a flexible granular ice pack. The small frozen particles inside can flow adaptively, ensuring that all points of the inflamed and swollen area can be fully contacted with the ice pack, and ensuring good cold compress effect.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A method for preparing a flexible granular ice pack includes the following steps:

[0006] S1 (sheet preparation step): Composite an antifreeze PE film, an aluminum oxide-coated PET film, and a dry paper together to form an inner flexible sheet.

[0007] S2 (forming step): Form the inner flexible sheet into a spherical inner cavity sphere. The inner cavity sphere is filled with a liquid, and the freezing temperature of the liquid is lower than zero degree Celsius, and the diameter of the inner cavity sphere is 0.5 cm to 1.5 cm.

[0008] S3 (bagging step): Prepare an outer flexible sheet into an outer bag body, then place a plurality of inner cavity spheres into the outer bag body, and then seal the bag mouth of the outer bag body.

[0009] In this method for preparing a flexible granular ice pack, the inner flexible sheet is formed into a spherical inner cavity sphere, and the inner cavity sphere is filled with a liquid whose freezing temperature is lower than zero degree Celsius. In this way, when the whole ice pack is placed in the freezer of the refrigerator, the liquid in the inner cavity sphere will freeze to form a number of independent small frozen particles. These small frozen particles can flow inside the outer bag body. When the outer bag body is used for cold compress on the inflamed and swollen area of the user, the small frozen particles inside the outer bag body can flow adaptively, ensuring that all points of the inflamed and swollen area can be fully contacted with the ice pack, and ensuring good cold compress effect.

[0010] Moreover, in this kind of ice bag, the entire inner flexible sheet is composed of a freeze-resistant PE film, an aluminum oxide-coated PET film, and dry paper laminated together. The freeze-resistant PE film is used as the inner wall in contact with the liquid, while the dry paper is used as the outer wall. Since the aluminum oxide-coated PET film has good barrier properties, it can reduce the loss and spoilage of the liquid. The freeze-resistant PE film used as the innermost layer can ensure that the entire inner film sheet has good expansion adaptability, and the dry paper has a certain water absorption capacity and can adsorb the condensed water generated during the initial freezing process, thus preventing the individual inner cavity spheres from freezing together into a lump.

[0011] In summary, in the ice bag prepared by this method, the small frozen particles inside can flow adaptively, ensuring that all points at the inflamed and swollen area can come into full contact with the ice bag, ensuring good cold compress effect.

[0012] Optionally, the freeze-resistant PE film and the aluminum oxide-coated PET film are laminated together through an adhesive layer, and the adhesive layer is located between the freeze-resistant PE film and the aluminum oxide-coated PET film. The dry paper layer and the aluminum oxide-coated PET film are laminated together through a casting resin layer, and the casting resin layer is located between the dry paper layer and the aluminum oxide-coated PET film.

[0013] Specifically, the resin in the casting resin layer includes but is not limited to PE resin.

[0014] Optionally, the thickness of the freeze-resistant PE film is 50 microns, the thickness of the aluminum oxide-coated PET film is 15 microns, the thickness of the dry paper is 80 microns, the thickness of the adhesive layer is 2 microns, and the thickness of the casting resin layer is 15 microns.

[0015] Optionally, in the forming step, there are a first pressing roller and a second pressing roller. Both the first pressing roller and the second pressing roller are cylindrical. A number of semi-spherical grooves are provided on the outer walls of the first pressing roller and the second pressing roller. A number of heat-sealing pressing plates are provided on the first pressing roller, and a number of heat-sealing cutting knives are provided on the second pressing roller. When the first pressing roller and the second pressing roller rotate, two inner flexible sheets are hot-pressed together to form an open spherical cavity. After injecting liquid into the open spherical cavity, the first pressing roller and the second pressing roller further rotate, and the opening of the spherical cavity is closed and cut into independent inner cavity spheres.

[0016] Optionally, the heat-sealing pressing plates are distributed on both sides of the grooves, the heat-sealing cutting knives are distributed on both sides of the grooves, and the number of heat-sealing pressing plates is equal to the number of heat-sealing cutting knives.

[0017] Optionally, the volume of the inner cavity spheres accounts for 70% - 80% of the outer bag body.

[0018] Optionally, the outer flexible sheet includes an OPP film or a PE film.

[0019] The specific outer flexible sheet includes, but is not limited to, OPP film or PE film.

[0020] Optionally, the liquid includes a saturated salt solution or an alcohol solution.

[0021] The saturated salt solution and the alcohol solution have good fluidity and are more likely to undergo adaptive deformation. Therefore, a saturated salt solution or an alcohol solution is used to replace the liquid freezing resin in this ice bag.

[0022] Optionally, the diameters of the inner cavity spheres in the outer bag body are equal or unequal.

[0023] The beneficial effect of the present invention is that the small frozen particles located inside can undergo adaptive flow, ensuring that all points at the inflamed and swollen area can be in full contact with the ice bag, ensuring good cold compress effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is a schematic structural diagram of a flexible granular ice bag;

[0026] Figure 2 is a schematic structural diagram of the inner cavity sphere;

[0027] Figure 3 is a schematic diagram of the cooperation relationship between the first pressing roller and the second pressing roller;

[0028] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0029] Figure 5 is Figure 3 an enlarged schematic diagram of part B in

[0030] In the drawings, each reference numeral is: 101, inner flexible sheet; 102, waste 1, inner cavity sphere; 10, liquid; 11, anti-freeze PE film; 12, adhesive layer; 13, aluminum oxide-coated PET film; 14, extrusion coating resin layer; 15, dry paper; 2, outer bag body; 301, first pressing roller; 302, second pressing roller; 4, forming groove; 501, heat-sealing press plate; 502, heat-sealing cutter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention with reference to the drawings.

[0032] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways than those specifically described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0034] Example 1

[0035] A flexible granular ice pack, combined with an attachment Figure 1 And an attachment Figure 2 As shown in the figure, it includes an inner flexible sheet 101 and an outer flexible sheet; the inner flexible sheets are fitted together to form a flexible inner cavity sphere 1, and the cavity of the inner cavity sphere 1 is filled with a liquid 10. The diameter of the inner cavity sphere is 0.5 cm to 1.5 cm. The outer flexible sheets are fitted together to form a flexible outer bag 2. There are multiple inner cavity spheres, and all the inner cavity spheres 1 are filled in the outer bag 2. The inner flexible sheet includes an anti-freeze PE film 11, an aluminum oxide-coated PET film 13, and a dry paper 15. The anti-freeze PE film 11 and the dry paper 15 are respectively located on both sides of the aluminum oxide-coated PET film 13. The anti-freeze PE film 11 is located on the inner wall of the inner cavity sphere, and the dry paper 15 is located on the outer wall of the inner cavity sphere 1. The inner flexible sheet 101 includes an anti-freeze PE film 11, an aluminum oxide-coated PET film 13, and a dry paper 15. The anti-freeze PE film 11 and the dry paper 15 are respectively located on both sides of the aluminum oxide-coated PET film 13. The anti-freeze PE film 11 is located on the inner wall of the inner cavity sphere, and the dry paper 15 is located on the outer wall of the inner cavity sphere 1. An adhesive layer 12 is provided between the anti-freeze PE film 11 and the aluminum oxide-coated PET film 13, and the adhesive can specifically be a polyurethane adhesive. A coated resin layer 14 is provided between the aluminum oxide-coated PET film 13 and the dry paper 15. The volume of the inner cavity sphere in the outer bag is 70% - 80%.

[0036] The ice bag disclosed in this embodiment can not only be used as a cold compress material, but also as a cold source for long-distance cold chain packaging and transportation.

[0037] Example 2

[0038] A method for preparing the flexible granular ice bag as shown in Example 1, in combination with Attached Figure 2 , Attached Figure 3 , Attached Figure 4 and Attached Figure 5 as shown,

[0039] A method for preparing a flexible granular ice bag, comprising the following steps,

[0040] S1 (sheet production step), laminating the anti-freezing PE film 11, the aluminum oxide-coated PET film 13 and the dry paper 15 together to form an inner flexible sheet 101; wherein the anti-freezing PE film 11 and the aluminum oxide-coated PET film 13 are laminated together through an adhesive layer 12, and the adhesive layer 12 is located between the anti-freezing PE film 11 and the aluminum oxide-coated PET film 13, and the dry paper 15 layer and the aluminum oxide-coated PET film 13 are laminated together through a casting resin layer 14, and the casting resin layer 14 is located between the dry paper 15 layer and the aluminum oxide-coated PET film 13. The thickness of the anti-freezing PE film 11 is 50 microns, the thickness of the aluminum oxide-coated PET film 13 is 15 microns, the thickness of the dry paper 15 is 80 microns, the thickness of the adhesive layer 12 is 2 microns, and the thickness of the casting resin layer 14 is 15 microns. The resin in the specific casting resin layer 14 includes but is not limited to PE resin.

[0041] S2 (Forming Step): The inner flexible sheet 101 is formed into a spherical inner cavity sphere. The inner cavity sphere is filled with a liquid 10, and the freezing temperature of the liquid 10 is lower than zero degree Celsius, and the diameter of the inner cavity sphere is 0.5 cm to 1.5 cm. The forming step includes a first pressing roller 301 and a second pressing roller 302. Both the first pressing roller 301 and the second pressing roller 302 are cylindrical. In this step, the mutually fitting first pressing roller 301 and second pressing roller 302 are required. The two inner flexible sheets 101 are roll-pressed and formed by the first pressing roller 301 and the second pressing roller 302. A number of semi-spherical grooves are provided on the outer walls of the first pressing roller 301 and the second pressing roller 302. A number of heat-sealing pressing plates 501 are provided on the first pressing roller 301, and a number of heat-sealing cutting knives 502 are provided on the second pressing roller 302. When the first pressing roller 301 and the second pressing roller 302 rotate, the two inner flexible sheets 101 are heat-pressed together to form an open spherical cavity. The outer wall of the spherical cavity is closely attached to the groove walls on both sides. After injecting the liquid 10 into the open spherical cavity, the first pressing roller 301 and the second pressing roller 302 further rotate, and the opening of the spherical cavity is closed and cut into an independent inner cavity sphere, while the remaining inner flexible sheet 101 forms waste 102. The heat-sealing pressing plates 501 are distributed on both sides of the groove, and the heat-sealing cutting knives 502 are distributed on both sides of the groove. The number of the heat-sealing pressing plates 501 is equal to the number of the heat-sealing cutting knives 502. When the two inner flexible sheets are closely attached together and clamped between the heat-sealing cutting knives and the heat-sealing pressing plates,

[0042] S3 (Bagging Step): The outer flexible sheet is prepared into an outer bag body 2, and then a number of inner cavity spheres are placed in the outer bag body, and then the bag mouth of the outer bag body is closed.

[0043] In this method for preparing a flexible granular ice bag, the inner flexible sheet 101 is formed into a spherical inner cavity sphere, and the inner cavity sphere is filled with a liquid 10 whose freezing temperature is lower than zero degree Celsius. In this way, when the whole ice bag is placed in the freezer of a refrigerator, the liquid 10 in the inner cavity sphere will freeze to form a number of independent small frozen particles. These small frozen particles can flow in the outer bag body 2. When the outer bag body 2 is cold-compressed on the inflamed and swollen area of a user, the small frozen particles in the outer bag body 2 can flow adaptively, ensuring that each point on the inflamed and swollen area can be in full contact with the ice bag, and ensuring a good cold-compress effect.

[0044] Moreover, in this kind of ice bag, the entire inner flexible sheet 101 is composed of a freeze-resistant PE film 11, an aluminum oxide-coated PET film 13, and a dry paper 15. The freeze-resistant PE film 11 is used as the inner wall in contact with the liquid 10, and the dry paper 15 is used as the outer wall. Since the aluminum oxide-coated PET film 13 has good barrier properties, the loss and spoilage of the liquid 10 can be reduced. The freeze-resistant PE film 11 used as the innermost layer can ensure that the entire inner film sheet has good expansion adaptability, and the dry paper 15 has a certain water absorption capacity and can adsorb the condensed water generated during the initial freezing process, thus preventing the individual inner cavity spheres from freezing together into a lump.

[0045] The salt solution and the alcohol solution have good fluidity and are more likely to undergo adaptive deformation. Therefore, a saturated salt solution or an alcohol solution is used to replace the liquid freezing resin in this kind of ice bag.

[0046] As a variant implementation, the diameters of the individual inner cavity spheres in the outer bag body 2 are equal or unequal.

[0047] The above-described embodiments only represent some embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for preparing a flexible granular ice pack, characterized in that: The following steps are included: The sheeting step is to compound the antifreeze PE film, the aluminum oxide-coated PET film and the dry-laid paper together to form an inner flexible sheet; The forming step is to form the inner flexible sheet into a spherical inner cavity sphere, wherein the inner cavity sphere is filled with a liquid, and the freezing temperature of the liquid is below zero degrees, and the diameter of the inner cavity sphere is 0.5 cm to 1.5 cm; In the bagging step, the outer flexible sheet is prepared into an outer bag body, and then a plurality of inner cavity spheres are placed in the outer bag body, and then the bag opening of the outer bag body is closed.

2. A method for preparing a flexible granular ice pack according to claim 1, characterized in that: The antifreeze PE film and the aluminum oxide-coated PET film are compounded together through an adhesive layer, and the adhesive layer is located between the antifreeze PE film and the aluminum oxide-coated PET film. The dry paper layer and the aluminum oxide-coated PET film are compounded together through a coating resin layer, and the coating resin layer is located between the dry paper layer and the aluminum oxide-coated PET film.

3. A method for preparing a flexible granular ice pack according to claim 2, characterized in that: The thickness of the antifreeze PE film is 50 microns, the thickness of the aluminum oxide-coated PET film is 15 microns, the thickness of the dry-laid paper is 80 microns, the thickness of the adhesive layer is 2 microns, and the thickness of the coating resin layer is 15 microns.

4. The method for preparing a flexible granular ice pack according to claim 1, characterized in that: The forming step includes a first pressing roller and a second pressing roller, both of which are cylindrical, and the outer walls of the first pressing roller and the second pressing roller are provided with a plurality of semi-spherical grooves, the first pressing roller is provided with a plurality of heat-sealing pressing plates, and the second pressing roller is provided with a plurality of heat-sealing cutting knives. When the first pressing roller and the second pressing roller rotate, the two inner flexible sheets are hot-pressed together to form an open ball cavity. After liquid is injected into the open ball cavity, the first pressing roller and the second pressing roller are further rotated, and the opening of the ball cavity is closed and cut into an independent inner cavity sphere.

5. A method for preparing a flexible granular ice pack according to claim 4, characterized in that: The heat sealing pressing plates are distributed on both sides of the groove, the heat sealing cutting knives are distributed on both sides of the groove, and the number of the heat sealing pressing plates is equal to the number of the heat sealing cutting knives.

6. The method for preparing a flexible granular ice pack according to claim 1, characterized in that: The inner hollow sphere occupies 70% to 80% of the volume of the outer bag.

7. The method for preparing a flexible granular ice pack according to claim 1, characterized in that: The outer flexible sheet includes an OPP film or a PE film.

8. The method for preparing a flexible granular ice pack according to claim 1, characterized in that: The liquid includes a saturated salt solution or an alcohol solution.

9. The method for preparing a flexible granular ice pack according to claim 1, characterized in that: The diameters of the inner hollow spheres in the outer bag body are equal or unequal.

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