CN210708780U

CN210708780U - Cold insulation bag

Info

Publication number: CN210708780U
Application number: CN201921572655.0U
Authority: CN
Inventors: 郑静; 赵启军; 郑强; 杨建鹏
Original assignee: Hebei Hui Ya Mud Special Equipment Manufacturing Ltd By Share Ltd
Current assignee: Hebei Huiya New Material Group Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-06-09
Anticipated expiration: 2029-09-20

Abstract

The embodiment of the utility model discloses cold insulation bag belongs to cold insulation material technical field. The cold insulation bag comprises a bag body and a cold insulation body, wherein the bag body is provided with an accommodating space for placing the cold insulation body; the heat-insulating body is a porous structure body which is communicated with each other, and the pores are filled with refrigerant. The cold source of the cold insulation bag of the utility model is released uniformly and slowly, can maintain low temperature for a long time, has the characteristic of good cold insulation aging, and can greatly reduce the rotten rate; the frozen food is not bulged and has good shaping, namely the food cannot be stacked when placed in any direction; the cold chain conveying device can be repeatedly used, is energy-saving and environment-friendly, and greatly reduces the cold chain conveying cost.

Description

Cold insulation bag

Technical Field

The embodiment of the utility model provides a relate to cold insulation material technical field, concretely relates to cold insulation bag.

Background

The existing cold chain low-temperature distribution process adopts the following modes:

the refrigerating unit of the refrigerator car has high energy consumption and high pollution, and is suitable for long-distance distribution of large-batch low-temperature goods.

The refrigeration mode of dry ice is widely applied to distribution and preservation of biological products, food, aquatic products and the like with preservation temperature below 0 ℃, but the dry ice can generate carbon dioxide gas with 800 times of the volume of the dry ice in the use process, so that the potential safety hazard of explosion exists, and in addition, the purchase, storage and use of the dry ice are very inconvenient.

The low-temperature distribution mode of the phase-change cold storage material, which takes the cold storage material (ice bags or dry ice) as a cold source, utilizes the cold released by the cold storage material in the phase-change process to maintain the low temperature of the goods, is suitable for the low-temperature distribution of the goods in small batches, in small quantity and for many times, and has the advantages of energy conservation, environmental protection, safe and reliable use.

However, in the low-temperature distribution mode of the phase-change cold storage material, a water ice bag and other liquid or semi-liquid biological ice bags are generally used as cold storage materials, and the water ice bag has the following defects: the cooling speed is high, and the low temperature cannot be kept for a long time and a long distance; the molding is poor, and the cold source is not uniformly released; the ice will produce water stain when it is cooled, which is easy to make the goods wet and affect the quality. The biological cold release speed of other liquid or semi-liquid ice bags is slower, but the biological cold release speed is poor like that of a water quality ice bag, the ice bags can be stacked in different degrees when placed in different directions, the cold source is not uniformly released, the price is relatively higher, and the cost of cold chain transportation is greatly improved.

SUMMERY OF THE UTILITY MODEL

Therefore, an embodiment of the present invention provides a cold insulation bag to solve the problems that the existing cold insulation material has a fast cold release speed and poor shaping, and cannot keep low temperature for a long time and a long distance, and the cold source is not uniformly released.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

a cold insulation bag comprises a bag body and a cold insulation body, wherein the bag body is provided with an accommodating space for placing the cold insulation body; the heat-insulating body is a porous structure body which is communicated with each other, and the pores are filled with refrigerant.

Further, the refrigerant is a saline solution, an aqueous ethylene glycol solution, an aqueous glycerol solution or an aqueous ethanol solution.

Furthermore, the aperture of the heat-insulating body is 0.2-5 nm, and the aperture ratio is 96.5-98.5%.

Furthermore, the bag body is made of polyethylene, polypropylene, nylon or polyester, and the thickness of the bag body is 0.18-0.3 mm.

Further, the cold insulation body is in the shape of a cuboid, a cube or a cylinder.

Furthermore, a handle is arranged on the edge of the outer side of the bag body.

The embodiment of the utility model provides a have following advantage:

1. the cold source of the cold insulation bag of the utility model is released uniformly and slowly, can maintain low temperature for a long time, has the characteristic of good cold insulation aging, and can greatly reduce the rotten rate; the frozen food is not bulged and has good shaping, namely the food cannot be stacked when placed in any direction; the cold chain conveying device can be repeatedly used, is energy-saving and environment-friendly, and greatly reduces the cold chain conveying cost.

2. The utility model discloses a cold-keeping bag can be used to the long-distance refrigeration transportation industry of products such as aquatic products, fresh and alive article, processed food, chemical agent, biological product, electron, keeps low temperature in the transportation, prevents effectively that article are rotten.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural view of a heat insulating body of a heat insulating bag according to embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a cold insulation bag provided in embodiment 1 of the present invention;

in the figure:

1-a cold insulation body; 2-hole; 3-bag body; 4-a handle.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 and 2, the cold insulation bag includes a bag body 3 and a cold insulation body 1, the bag body 3 has a receiving space for placing the cold insulation body 1, the cold insulation body 1 is a porous structure such as a sponge porous structure, and the pores 2 are filled with a refrigerant.

The refrigerant is used as a phase-change cold storage material of the cold-keeping bag, absorbs and stores a large amount of cold at low temperature, and can release a large amount of cold at higher temperature, so that the low-temperature environment of the cold-keeping bag and the surrounding small range can be maintained for a long time. In a preferred embodiment, the refrigerant filled in the hole 2 is a saline solution, an aqueous glycol solution, an aqueous glycerin solution, or an aqueous ethanol solution.

The aperture range of the heat-insulating body 1 is 0.2-5 nm, and the aperture ratio is 96.5-98.5%. The material of the bag body 3 is polyethylene, polypropylene, nylon or polyester, the thickness of the bag body is 0.18-0.3 mm, and the cold insulation body 1 can be in different shapes as required, such as a cuboid, a cube or a cylinder.

The surface temperature of the frozen cold-keeping bag can reach lower temperature, so that the skin is prevented from being frostbitten in the use process, and the outer side edge of the bag body 3 is provided with a handle 4.

The cold insulation body is prepared by soaking the foam material for cold insulation in a refrigerant or injecting the refrigerant until the foam material for cold insulation is adsorbed to a saturated state, and preferably, each cubic meter of the foam material for cold insulation is prepared from the following raw materials by weight: 22-28 kg of phenolic resin, 0.4-0.8 kg of silicone oil, 0.11-0.66 kg of penetrating agent JFC, 0.11-0.66 kg of sodium dodecyl benzene sulfonate, 2.5-4 kg of foaming agent, 0.6-2 kg of toughening agent and 4.5-6 kg of curing agent.

The foaming agent is selected from one or two of n-pentane and n-hexane.

The toughening agent is one or two of kaolin and barium sulfate.

The curing agent is prepared from the following components in parts by weight: 9-10: 3-6: 8-12 parts of toluenesulfonic acid, water, phenolsulfonic acid and phosphoric acid.

The raw materials of the foam material for keeping cold per cubic meter also comprise 0.2-0.8 kg of pigment.

The manufacturing method of the foam material for cold insulation comprises the following steps:

1) mixing phenolic resin, silicone oil, a penetrating agent JFC, sodium dodecyl benzene sulfonate, a foaming agent, a toughening agent and a pigment (if any) at 26-28 ℃, and uniformly stirring to obtain a material A, wherein the temperature of a curing agent is controlled at 20-28 ℃;

2) the material A and the curing agent enter a foaming co-extrusion die through respective metering pumps, and the temperature of foaming reaction is controlled to be 40-45 ℃;

3) and opening the die to obtain a die, and performing decomposition cutting according to the required volume.

Further, the cold insulation body is packaged by a plastic bag to obtain the cold insulation bag.

Example 2

The foam material for cold insulation of the embodiment is prepared from the following raw materials in parts by weight per cubic meter: 26kg of phenolic resin, 0.5kg of silicone oil, 0.45kg of penetrating agent JFC, 0.11kg of sodium dodecyl benzene sulfonate, 3.2kg of n-pentane, 2kg of kaolin and 5.2kg of curing agent, wherein the weight ratio of the curing agent is 25: 10: 4: 10 toluene sulfonic acid, water, phenol sulfonic acid and phosphoric acid.

Example 3

The foam material for cold insulation of the embodiment is prepared from the following raw materials in parts by weight per cubic meter: 22kg of phenolic resin, 0.7kg of silicone oil, 0.11kg of penetrating agent JFC, 0.52kg of sodium dodecyl benzene sulfonate, 1.5kg of n-pentane, 1kg of n-hexane, 1.2kg of barium sulfate and 5.5kg of curing agent, wherein the weight ratio of the curing agent is 25: 9: 6: 8, water, phenolsulfonic acid and phosphoric acid.

Example 4

The foam material for cold insulation of the embodiment is prepared from the following raw materials in parts by weight per cubic meter: 24kg of phenolic resin, 0.65kg of silicone oil, 0.66kg of penetrating agent JFC, 0.28kg of sodium dodecyl benzene sulfonate, 3.6kg of n-pentane, 0.3kg of kaolin, 0.3kg of barium sulfate and 5.8kg of curing agent, wherein the weight ratio of the curing agent to the total weight of the curing agent is 25: 10: 4: 11 toluene sulfonic acid, water, phenol sulfonic acid and phosphoric acid.

Example 5

The foam material for cold insulation of the embodiment is prepared from the following raw materials in parts by weight per cubic meter: 28kg of phenolic resin, 0.4kg of silicone oil, 0.32kg of penetrating agent JFC, 0.66kg of sodium dodecyl benzene sulfonate, 2.8kg of n-hexane, 2kg of kaolin, 4.5kg of curing agent and 0.4kg of green pulp, wherein the weight ratio of the curing agent is 25: 9: 5: 12 toluene sulfonic acid, water, phenol sulfonic acid and phosphoric acid.

Example 6

The foam material for cold insulation of the embodiment is prepared from the following raw materials in parts by weight per cubic meter: 26kg of phenolic resin, 0.8kg of silicone oil, 0.56kg of penetrating agent JFC, 0.36kg of sodium dodecyl benzene sulfonate, 2kg of n-pentane, and ethylene glycol: 0.3kg, 2kg of normal hexane, 0.9kg of kaolin, 6kg of curing agent and 0.3kg of black slurry, wherein the weight ratio of the curing agent is 25: 10: 6: 12 toluene sulfonic acid, water, phenol sulfonic acid and phosphoric acid.

Test example 1

The foams for cold insulation obtained in examples 2 to 6 were tested for safety according to the following: RoHS directive 2011/65/correction directive (EU)2015/63 of EU appendix 2. The test results are as follows (report number: STD-20180719-102N):

cadmium (Cd), mercury (Hg), hexavalent chromium, monobromobiphenyl, dibromobiphenyl, tribromobiphenyl, tetrabromobiphenyl, pentabromobiphenyl, hexabromobiphenyl, heptabromobiphenyl, octabromobiphenyl, nonabromobiphenyl, decabromobiphenyl, polybromodiphenyl ether in total, monobromodiphenyl ether, dibromodiphenyl ether, tribromodiphenyl ether, tetrabromodiphenyl ether, pentabromodiphenyl ether, hexabromodiphenyl ether, heptabromodiphenyl ether, octabromodiphenyl ether, nonabromodiphenyl ether, decabromodiphenyl ether, none of which were detected.

The lead (Pb) content was 59.12 mg/kg. (the upper limit of the lead content is 0.1%)

The result shows that the foam material for cold insulation of the embodiment of the utility model is safe and nontoxic to human body.

Test example 2

Measurement of Water absorption Capacity: weighing 1g of foam material for cold insulation, putting the foam material into a l000mL beaker filled with tap water, standing the beaker at normal temperature for 24 hours, filtering the free water on the surface of the beaker by using a nylon cloth bag, and weighing the beaker. The calculation formula of the water absorption multiplying power is as follows: q ═ m₂-m₁)/m₁In the formula: q is the water absorption rate; m is₂The foam material for cold insulation has the mass after fully absorbing water; m is₁The foam material for cold insulation is the mass before water absorption.

Determination of Water Retention: 50g of foam material for cold insulation which absorbs water sufficiently is weighed, placed in a 100-mesh metal screen, excess water is filtered out, weighed, placed in a 100mL beaker and dried in a constant temperature oven at 36 ℃, and the mass of the foam material for cold insulation is measured every 1 h. The water retention rate calculation formula is: the water retention rate (mass of the foam for cold retention after drying for a certain period of time/mass of the foam for cold retention before drying) × 100%.

The foams for cold retention of examples 2 to 6 were tested for water absorption capacity and water retention, and the results are shown in Table 1.

TABLE 1

As can be seen from Table 1, the foams for cold insulation of examples 2 to 6 of the present invention have good water absorbability and high water retention.

Test example 3

Thermal stability test

The foams (50g) for cold retention obtained in examples 2 to 6 were each immersed in a 28% ethanol aqueous solution until the adsorption reached saturation, taken out, put into a refrigerator at-20 ℃ for freezing overnight, and then heated to 15 ℃ to repeat a cycle of cooling and heating 50 times, and the results showed that: the utility model discloses cold insulation material cooling and heating cycle in-process its freezing point's variation range is less (1.2-2 ℃) many times, satisfies cold-storage material requirement that can use repeatedly.

Test example 4

Test of cold insulation effect

The foams (21g) for cold retention obtained in examples 2 to 6 were each immersed in a 28% ethanol aqueous solution until the adsorption was saturated, taken out, and frozen overnight (length 23cm, width 13cm, thickness 2.8cm after freezing) in a refrigerator at-18 ℃.

(1) Indoor testing

The indoor temperature was 25 ℃, the product to be insulated (weight of fresh pork was 20.5kg) was placed in advance in a container (volume 48 × 28 × 48cm), the cold-keeping bag was placed in the container, the temperature in the container was monitored, and the duration of the temperature in the container not exceeding-5 ℃ was recorded.

(2) Outdoor testing

The indoor temperature was 36 ℃, the product to be insulated (weight of fresh pork was 20.5kg) was placed in advance in a container (volume 48 × 28 × 48cm), the cold-keeping bag was placed in the container, the temperature in the container was monitored, and the duration of the temperature in the container not exceeding-5 ℃ was recorded.

Meanwhile, as a control, 28% ethanol aqueous solution was placed in a refrigerator at-18 ℃ and frozen overnight to obtain a cold storage material of the same size (length 23cm, width 13cm, thickness 2.8 cm).

The above tests were carried out after the foams for cold insulation obtained in examples 2 to 6 were formed into corresponding cold insulation bags, and the results are shown in Table 2.

TABLE 2

As can be seen from Table 2, compare with the refrigerant of the same volume, the utility model discloses the cold insulation body of embodiment is after freezing, and the cold source release is even and slow, has more lasting cold insulation and the cold release effect.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A cold insulation bag is characterized by comprising a bag body (3) and a cold insulation body (1), wherein the bag body (3) is provided with an accommodating space for placing the cold insulation body (1); the heat-insulating body (1) is a porous structure body which is communicated with each other, and the holes (2) are filled with a refrigerant.

2. A cold-keeping bag according to claim 1, wherein the refrigerant is a saline solution, an aqueous glycol solution, an aqueous glycerol solution or an aqueous ethanol solution.

3. A cold-storage bag according to claim 1, wherein the cold-storage body (1) has a pore diameter of 0.2 to 5nm and an aperture ratio of 96.5 to 98.5%.

4. A cold-keeping bag according to claim 1, wherein the bag body (3) is made of polyethylene, polypropylene, nylon or polyester, and has a thickness of 0.18-0.3 mm.

5. A cold-keeping bag according to claim 1, wherein the cold-keeping body (1) has the shape of a cuboid, a cube or a cylinder.

6. A cold-keeping bag according to claim 1, wherein the bag body (3) is provided with handles (4) at its outer edges.