CN111532571A - Packaging bag - Google Patents

Packaging bag Download PDF

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Publication number
CN111532571A
CN111532571A CN202010370865.2A CN202010370865A CN111532571A CN 111532571 A CN111532571 A CN 111532571A CN 202010370865 A CN202010370865 A CN 202010370865A CN 111532571 A CN111532571 A CN 111532571A
Authority
CN
China
Prior art keywords
bag body
packaging bag
sodium alginate
aqueous solution
linking agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010370865.2A
Other languages
Chinese (zh)
Inventor
李松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Huisheng Industry And Trade Co ltd
Original Assignee
Xiamen Huisheng Industry And Trade Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Huisheng Industry And Trade Co ltd filed Critical Xiamen Huisheng Industry And Trade Co ltd
Priority to CN202010370865.2A priority Critical patent/CN111532571A/en
Publication of CN111532571A publication Critical patent/CN111532571A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/044—Water-setting substance, e.g. concrete, plaster
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Abstract

The invention discloses a packaging bag and relates to the field of packaging bags. The technical key points are as follows: the bag body comprises a non-woven fabric layer and pulp layers positioned on two sides of the non-woven fabric layer, wherein the pulp layers and the non-woven fabric layer are compounded together through an adhesive; the edible thin film is arranged on one side, away from the non-woven fabric layer, of the pulp layer, and is loaded on the pulp layer through the following steps: the method comprises the following steps: immersing the bag body into an aqueous solution containing a cross-linking agent and sodium alginate, wherein the weight percentage of the cross-linking agent to water is 3-5%, and the ratio of the sodium alginate to the water is (50-80) g/L; step two: immersing the bag body obtained in the step one into a calcium chloride aqueous solution with the concentration of 75-85%; step three: and (4) freeze-drying the bag body obtained in the step two to obtain the bag body loaded with the food-grade film, and the bag body has the advantages of improving the cleanliness of the packaging bag and preventing the food from being stained with toxic substances after contacting with the inner wall of the packaging bag.

Description

Packaging bag
Technical Field
The invention relates to the field of packaging bags, in particular to a packaging bag.
Background
The packaging bag is a simple bag, and the material for making the packaging bag is paper. Previous packages generally have an open top, but as the use of the packages is iteratively updated, the shapes of the packages have become more and more numerous, and packages have been derived, which are actually packages with closed top openings, often used for holding products (clothes, retail goods, etc.) or for storing food (for example pizza, bread, cakes, tea, snack foods in bulk, etc.); and gift can be placed when the gift is delivered.
The novel portable packing box disclosed by the utility model with the authorization notice number of CN201610235U comprises a box cover component, a box body component and a box bottom component, wherein the box cover component, the box body component and the box bottom component are formed by cutting and folding the whole piece of hard paper; the box bottom component comprises a front bottom plate extending downwards from the front panel, a rear bottom plate extending downwards from the rear panel, a left bottom plate extending downwards from the left side plate and a right bottom plate extending downwards from the right side plate.
The portable packing box similar to the portable packing box can be assembled by clamping or gluing the box bottom components in the prior art, however, when an article is placed in the portable bag, the gravity of the article directly acts on the box bottom, so the pressure on the box bottom is far larger than that on other parts, and when the article is not firmly glued or clamped, the bottom of the portable bag is easily exposed, so that the article in the portable bag falls. Therefore, a new packaging bag is invented.
For example, chinese patent application No. CN108081675B discloses a handbag and a method for manufacturing the same, which is characterized in that the overall structural strength of the bag body is improved by immersing the formed bag body in a surface treatment tank filled with a surface treatment liquid for surface treatment.
However, since the surface treatment liquid contains substances such as acrylic acid and ammonium persulfate, when the food is stored in the packaging bag similar to the packaging bag in the prior art, toxic substances such as acrylic acid and ammonium persulfate are adhered to the surface of the food after the food is directly contacted with the inner wall of the packaging bag, and the potential safety hazard of the food is greatly caused.
Therefore, a new solution is needed to solve the above problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the packaging bag which has the advantages of improving the cleanliness of the packaging bag and preventing toxic substances from being attached to the food after the food is contacted with the inner wall of the packaging bag.
In order to achieve the purpose, the invention provides the following technical scheme:
a packaging bag comprises a bag body, wherein the bag body comprises a non-woven fabric layer and pulp layers positioned on two sides of the non-woven fabric layer, and the pulp layers and the non-woven fabric layer are compounded together through an adhesive; the edible thin film is arranged on one side, away from the non-woven fabric layer, of the pulp layer, and is loaded on the pulp layer through the following steps:
the method comprises the following steps: immersing the bag body into an aqueous solution containing a cross-linking agent and sodium alginate, wherein the weight percentage of the cross-linking agent to water is 3-5%, and the ratio of the sodium alginate to the water is (50-80) g/L;
step two: immersing the bag body obtained in the step one into a calcium chloride aqueous solution with the concentration of 75-85%;
step three: and D, freeze-drying the bag body obtained in the step two to obtain the bag body loaded with the food-grade film.
By adopting the technical scheme, the paper pulp layer is made of paper pulp, the main material of the paper pulp is plant fiber, and the crosslinking agent can combine and crosslink carboxyl groups in the lignocellulose and the sodium alginate, so that the sodium alginate layer is formed on the surface of the paper pulp. Na on the G unit in the sodium alginate layer along with the step two+Will react with Ca2+Ion exchange reaction occurs to lead the G units to be stacked to form a cross-linked network structure, thus forming an irreversible stable hydrogel layer on the surface of the paper pulp layer, and the hydrogel layer is the edible-grade film.
Because the hydrogel layer that sodium alginate and calcium chloride reaction generated is nontoxic, and the hydrogel layer is in the outside, consequently can direct contact food after with hydrogel freeze-drying, can not be stained with the toxic substance after food and hydrogel contact, improve the security of the interior food of packaging bag.
More preferably, the interval between the first step and the second step is 10-15 min, and the bag body is placed in a ventilated position for draining operation within the interval.
By adopting the technical scheme, on the bag body after the operation of the first step, the sodium alginate layer is crosslinked on the paper pulp layer by the crosslinking agent, and the redundant crosslinking agent and the sodium alginate can drip in the draining process, so that the waste of the crosslinking agent and the sodium alginate can be reduced. Meanwhile, because the excessive cross-linking agent and the sodium alginate are easy to fall off from the pulp layer, the excessive cross-linking agent and the sodium alginate are unstable, and after the draining operation is stopped, the excessive cross-linking agent and the sodium alginate can be dripped, the reaction degree of the calcium chloride and the unstable sodium alginate in the step two is reduced, the falling of the hydrogel layer is avoided, and the stability of the hydrogel layer is improved. Finally, the draining operation can reduce the cross-linking agent amount on the surface of the sodium alginate layer, reduce the residual amount of the cross-linking agent on the surface of the sodium alginate layer, avoid direct contact of food with the residual cross-linking agent, and improve the safety of food in the packaging bag.
More preferably, carboxymethyl cellulose is added into the calcium chloride aqueous solution in the third step, and the ratio of the carboxymethyl cellulose to the water is 0.6-1.2 g/L.
By adopting the technical scheme, firstly, the carboxymethyl cellulose is a food additive, is non-toxic, and cannot cause the safety problem of food when added. Meanwhile, the carboxymethyl cellulose can improve the dispersibility of calcium chloride in water, so that the whole surface film treatment solution forms a uniform and stable system. Meanwhile, the carboxymethyl cellulose has good film forming property and whole film transfer property, so that the surface of the paper has good sealing property and oil resistance.
More preferably, in the first step, the temperature of the aqueous solution containing the cross-linking agent and the sodium alginate is 45-60 ℃.
Through adopting above-mentioned technical scheme, at this temperature, sodium alginate's molecule velocity of motion is very fast than the normal atmospheric temperature, can promote the formation on sodium alginate layer, and the temperature can not be too high simultaneously, guarantees sodium alginate's viscosity stability.
More preferably, the crosslinking agent in the first step is any one selected from genipin and epoxy crosslinking agents.
By adopting the technical scheme, the genipin and the epoxy cross-linking agent are both cross-linking agents with low toxicity, and the cross-linking agents are not exposed after being covered by the hydrogel, so that the safety of food can be further ensured.
More preferably, the aqueous solution containing the crosslinking agent and sodium alginate in the first step is stirred and broken up before the bag body is immersed in the aqueous solution in the first step.
Through adopting above-mentioned technical scheme, sodium alginate powder becomes wet when meeting water, because the hydration of sodium alginate microparticle makes its surface have viscidity, therefore the sodium alginate microparticle can be bonded together fast and form the block piece, and the block piece dissolves very slowly, therefore under the effect of stirring and breaking up, the block piece can disperse fast, accelerates the formation of sodium alginate layer.
More preferably, the stirring speed is 30-40 r/min, and the time is 5-10 min.
By adopting the technical scheme, the sodium alginate can be completely dissolved under the condition.
More preferably, the inner and outer walls of the bag are sprayed with clean water before the bag is immersed in an aqueous solution containing a crosslinking agent and sodium alginate.
Through adopting above-mentioned technical scheme, the bag body surface can be sprayed totally by the clear water, avoids the dirty dissolution of the surperficial bag body in the aqueous solution of step two with step three, avoids still being stained with after the bag body shaping dirty, improves the video security in the wrapping bag.
In summary, compared with the prior art, the invention has the following beneficial effects:
(1) the edible film is loaded on the surface of the bag body, so that the edible film is nontoxic, and the food in the packaging bag is not stained with toxic substances after being directly contacted with the edible film, so that the safety of the food in the packaging bag is improved;
(2) by carrying out draining operation on the bag body loaded with the sodium alginate layer, the waste of the cross-linking agent and the sodium alginate can be reduced; meanwhile, the hydrogel layer can be prevented from falling off by stopping the draining operation, so that the stability of the hydrogel layer is improved; meanwhile, the draining operation can also reduce the residual amount of the cross-linking agent on the surface of the sodium alginate layer, so that food is prevented from directly contacting with the residual cross-linking agent, and the safety of food in the packaging bag is improved;
(3) by adding the carboxymethyl cellulose, the carboxymethyl cellulose is nontoxic and can improve the dispersibility of calcium chloride in water, so that the whole surface film treatment solution forms a uniform and stable system, and the surface film treatment solution also has good film forming property and whole film transfer property, and can ensure that the surface of paper has good sealing property and oil resistance.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1: a packaging bag comprises a bag body, wherein the bag body comprises a non-woven fabric layer and paper pulp layers positioned on two sides of the non-woven fabric layer, the paper pulp layers are made of kraft paper pulp, and the non-woven fabric layer is made of polypropylene materials. The paper pulp layer and the non-woven fabric layer are compounded together through food-grade glue.
The side of the paper pulp layer, which is far away from the non-woven fabric layer, is compounded with an edible film, and the edible film is loaded on the paper pulp layer through the following steps:
the method comprises the following steps: and soaking the bag body into an aqueous solution containing a cross-linking agent and sodium alginate for 15 s. In the embodiment, the cross-linking agent is genipin, the weight percentage of the cross-linking agent to water is 3%, and the ratio of sodium alginate to water is 50 g/L;
step two: immersing the bag body obtained in the step one into a calcium chloride aqueous solution with the concentration of 75%, wherein the immersion time is 20 s;
step three: and (4) placing the bag body obtained in the step two into a freezing drying agent, and freezing and drying at the temperature of-40 ℃ to obtain the bag body loaded with the edible film.
Example 2: a packaging bag, which is different from the packaging bag in the embodiment 1 in that in the step one, the weight percentage of a cross-linking agent to water is 4 percent, and the ratio of sodium alginate to water is 65 g/L; in the second step, the bag body obtained in the first step is immersed in a calcium chloride aqueous solution with the concentration of 80% for 20 s.
Example 3: a packaging bag, which is different from the packaging bag in the embodiment 1 in that in the step one, the weight percentage of a cross-linking agent and water is 5 percent, and the ratio of sodium alginate to water is 80 g/L; in the second step, the bag obtained in the first step is immersed in a calcium chloride aqueous solution with the concentration of 85% for 20 s.
Example 4: a packaging bag is different from the packaging bag in the embodiment 1 in that the interval between the operation of the first step and the operation of the second step is 10-15 min, and the bag body is placed in a ventilated place for draining operation in the interval.
Example 5: a packaging bag, which is different from the embodiment 1 in that carboxymethyl cellulose is added into the calcium chloride aqueous solution in the third step, and the ratio of the carboxymethyl cellulose to water is 0.6 g/L.
Example 6: a packaging bag, which is different from example 5 in that the ratio of carboxymethyl cellulose to water is 0.9 g/L.
Example 7: a packaging bag which is different from example 5 in that the ratio of carboxymethyl cellulose to water is 1.2 g/L.
Example 8: a packaging bag is different from the packaging bag in the embodiment 1 in that in the step one, the temperature of the crosslinking agent and the sodium alginate aqueous solution is 45 ℃.
Example 9: a packaging bag, which is different from the packaging bag in the embodiment 8 in that, in the step one, the temperature of the crosslinking agent and the sodium alginate aqueous solution is 60 ℃.
Example 10: a packaging bag, which is different from the embodiment 1 in that the cross-linking agent in the step one is an epoxy cross-linking agent, in particular a GP-9203 waterborne epoxy cross-linking agent purchased from new materials ltd of shogaoley, zhejiang.
Example 11: a packaging bag is different from the packaging bag in example 1 in that before the bag body is immersed into the aqueous solution in the first step, the aqueous solution containing the cross-linking agent and the sodium alginate in the first step is stirred and broken up, the stirring speed is 30r/min, and the stirring time is 10 min.
Example 12: a packaging bag is different from the packaging bag in example 11 in that stirring and scattering speed is 40r/min and time is 6 min.
Example 13: a packaging bag, which is different from that of example 1 in that the inner and outer walls of the bag body are sprayed with clean water before the bag body is immersed in an aqueous solution containing a crosslinking agent and sodium alginate, the clean water being RO pure water.
Test samples: the packaging bags obtained in examples 1 to 13 were used as test samples 1 to 13.
The test method comprises the following steps: refer to GB 9685-2016 national food safety Standard food contact materials and standards for the use of additives for products.
And (3) test results: the test samples 1-13 all conform to GB 9685-2016 national food safety standard for food contact materials and additives for products.
Because the edible thin film is hydrogel generated by the reaction of sodium alginate and calcium chloride, the surface treatment of the bag body does not contain toxic substances such as acrylic acid, ammonium persulfate and the like.
The hydrogel layer is non-toxic, and the hydrogel layer is loaded on the outermost side of the bag body, so that the hydrogel layer can be directly contacted with food after being freeze-dried, toxic substances cannot be attached to the food after the food is contacted with the hydrogel layer, and the safety of the food in the packaging bag is improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (8)

1. A packaging bag is characterized by comprising a bag body, wherein the bag body comprises a non-woven fabric layer and pulp layers positioned on two sides of the non-woven fabric layer, and the pulp layers and the non-woven fabric layer are compounded together through an adhesive; the edible thin film is arranged on one side, away from the non-woven fabric layer, of the pulp layer, and is loaded on the pulp layer through the following steps:
the method comprises the following steps: immersing the bag body into an aqueous solution containing a cross-linking agent and sodium alginate, wherein the weight percentage of the cross-linking agent to water is 3-5%, and the ratio of the sodium alginate to the water is (50-80) g/L;
step two: immersing the bag body obtained in the step one into a calcium chloride aqueous solution with the concentration of 75-85%;
step three: and D, freeze-drying the bag body obtained in the step two to obtain the bag body loaded with the food-grade film.
2. The packaging bag as claimed in claim 1, wherein the interval between the first step and the second step is 10-15 min, and the bag body is placed in a ventilated place for draining operation.
3. The packaging bag according to claim 1, wherein carboxymethyl cellulose is added to the calcium chloride aqueous solution of the third step, and the ratio of carboxymethyl cellulose to water is 0.6-1.2 g/L.
4. The packaging bag according to claim 1, wherein the temperature of the aqueous solution containing the cross-linking agent and the sodium alginate in the first step is 45-60 ℃.
5. The packaging bag according to claim 1, wherein the cross-linking agent in the first step is any one selected from genipin and epoxy cross-linking agent.
6. The packaging bag according to claim 1, wherein the aqueous solution containing the crosslinking agent and sodium alginate in the first step is stirred and broken up before the bag body is immersed in the aqueous solution in the first step.
7. The packaging bag according to claim 5, wherein the stirring speed is 30 to 40r/min and the stirring time is 5 to 10 min.
8. The packaging bag according to claim 1, wherein in the first step, the inner and outer walls of the bag body are sprayed with clean water before the bag body is immersed in the aqueous solution containing the crosslinking agent and the sodium alginate.
CN202010370865.2A 2020-05-06 2020-05-06 Packaging bag Withdrawn CN111532571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010370865.2A CN111532571A (en) 2020-05-06 2020-05-06 Packaging bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010370865.2A CN111532571A (en) 2020-05-06 2020-05-06 Packaging bag

Publications (1)

Publication Number Publication Date
CN111532571A true CN111532571A (en) 2020-08-14

Family

ID=71967808

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010370865.2A Withdrawn CN111532571A (en) 2020-05-06 2020-05-06 Packaging bag

Country Status (1)

Country Link
CN (1) CN111532571A (en)

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