CN107139555B - A kind of stratified material and its application for Food heat-insulating bag - Google Patents
A kind of stratified material and its application for Food heat-insulating bag Download PDFInfo
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- CN107139555B CN107139555B CN201710411156.2A CN201710411156A CN107139555B CN 107139555 B CN107139555 B CN 107139555B CN 201710411156 A CN201710411156 A CN 201710411156A CN 107139555 B CN107139555 B CN 107139555B
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- Prior art keywords
- stratified material
- insulating bag
- microns
- food heat
- film layer
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Classifications
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- 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
- B32B5/18—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 features of a layer of foamed material
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0278—Polyurethane
Landscapes
- Laminated Bodies (AREA)
- Packages (AREA)
- Wrappers (AREA)
Abstract
The present invention discloses a kind of stratified material for Food heat-insulating bag and its application, the stratified material successively includes: ultra-thin aluminum foil layer, longitudinal film layer, polyurethane foaming layer and the film layer that blocks water, longitudinal bubble is uniformly distributed in longitudinal film layer, it is lower than 3% through bubble ratio in bubble, polyurethane foaming layer is prepared using super soft polyurethane foam, obtains that a kind of heat insulation effect is excellent, material is durable, the stratified material of reusable Food heat-insulating bag in the regioselective composition group.
Description
Technical field
The present invention relates to stratified material fields, and in particular to for the stratified material field of Food heat-insulating bag, in particular to
With it is excellent keep the temperature, block water, the repeatedly used high-intensitive stratified material field for being used for Food heat-insulating bag.
Background technique
With the high speed development of internet industry, energetically support of the country to " internet+", industry is taken out in logistics, express delivery
It flourishes, and high speed development is presented.In this context, the dependence of more and more restaurants, snack bar to internet sales
Degree enhancing, but there is a factor to influence the quality taken out and the satisfaction of client, due to thermal loss during sending with charge free, meal
The decline of dish temperature is obvious, has seriously affected the taste and flavor of food.
After mostly using PP packing box to pack currently on the market, further increases and cover aluminium film insulated bag, reach the work of heat preservation
With, but its heat insulation effect is general, and due to using adhesive tape bonding in insulated bag packaging, surface layer film ruptures after dismounting, can not be again
It utilizes, virtually improves cost, also result in secondary pollution.
The above-mentioned most common insulated bag is exactly that aluminium foil surface directly carries out polymer foaming or further overlay film, although structure
Simply, cheap, but due to disadvantages mentioned above, the satisfaction that client uses is constrained, client proposes the performance of insulated bag
Higher use demand, high-quality insulated bag material have the huge market space, and in this context, inventor has carried out careful grind
Study carefully, obtain the solution of the present invention, concrete scheme is as follows.
Summary of the invention
Goal of the invention: Food heat-insulating bag is usually that stratified material with multi-layer structure is prepared, the present invention by pair
For the selection of the stratified material structure of Food heat-insulating bag, each layer composition and structure, obtained in the regioselective composition group
To a kind of heat insulation effect is excellent, material is durable, the stratified material of reusable Food heat-insulating bag.
In order to reach the technical effect, the present invention proposes following solution:
A kind of stratified material for Food heat-insulating bag, stratified material successively include: ultra-thin aluminum foil layer, longitudinal film layer,
Polyurethane foaming layer and the film layer that blocks water.
The mode of general heat loss is heat transfer and heat radiation, and the application just uses both comprehensive reductions of two ways
Heat leakage effect.The ultra-thin aluminum foil layer can effectively hinder hot spoke using a material with heat reflection effect
The cooling penetrated, plays insulation effect.The longitudinal direction film layer is effectively to reduce heat transfer to form an air buffer, this
It is highly important heat preserving mode, heat transfer is the important way of heat loss.Polyurethane foaming layer also has the effect of identical heat preservation
Fruit, the two utilize simultaneously, improve the effect of heat preservation, using effect is greatly improved.
The setting for the film layer that blocks water be in order to improve the water evaporation heat dissipation in food transport rainy days, meanwhile, setting blocks water film
After layer, the bulk strength of stratified material is significantly promoted, and in use, can not damage film after being fixed temporarily using adhesive tape etc.
It is smoothly removed in the case where layer material structures, the recycling property of film material is greatly improved.
Longitudinal film layer structure selection
It the use of longitudinal film layer is an important invention emphasis in the present invention, wherein being uniformly distributed in the longitudinal direction film layer
Longitudinal bubble is lower than 3% through bubble ratio in the bubble.Preferably shorter than 2.5%, 2%, 1.5%, 1%.Wherein run through gas
Bubble refer in longitudinal film surface in the form of open bore existing for bubble, ratio is that longitudinal film surface is accounted for perforated area
Ratio is calculated.
If through hole content is excessive, air barrier effect obviously has reduction, and heat insulation effect is very poor, reduces 2,000
More than score, this point attracts attention seldom in existing product, does not recognize the influence of foaming central hole structure.But due to preparation
The accessible effect of technique, it is difficult to reach absolutely not through hole, it is more lower better in practical operation.
Meanwhile longitudinal most preferred mode of film layer central hole structure is that film layer vertical direction size is greater than film layer tangent line or parallel
The size in direction, increases the practical hole density of unit area in this way, while hindering in heat loss, the ruler in vertical film layer direction
It is very little.The structure is originated from the slow traction in the vertical direction of the foaming process in preparation process, which does not have been reported that, and the skill
Art will not cause production cost expense obviously to increase.
The longitudinal direction thicknesses of layers is 100-350 microns, and preferred thickness is 200-300 microns, and most preferred thickness is 250 micro-
Rice.
Polyurethane foaming layer selection
Polyurethane foaming layer is equally with pore structure, and pore structure does not require significantly, most preferably and through hole
Structure is few.Meanwhile polyurethane plays a degree of adhesive effect, the bonding for improving longitudinal film layer between the film that blocks water
Power improves the intensity of stratified material.
The polyurethane foaming layer is prepared using super soft polyurethane foam, and wherein polyalcohol uses polyether polyols
Alcohol, molecular weight preferably 20000 or more, the isocyanates used use non-aromatic isocyanates.It is using super soft polyurethane
In order to improve the flexibility of stratified material, so improve stratified material during the packaging process with type, improve product use
Convenience, meanwhile, also improve the interlayer adhesion of stratified material using the technology, the damage in use be greatly lowered
Rate improves the rate of recycling.
For the polyurethane foaming layer with a thickness of 200-1000 microns, preferred thickness is 400-650 microns, and most preferred thickness is
500-550 microns.Thicknesses of layers does not obviously limit, and can be chosen at random according to actual operation requirements, the bigger guarantor of general thickness
Warm nature is better.Comprehensively consider heat insulating ability, using with type and cost, most preferably 500 microns.
The selection for the film layer that blocks water
The effect for the film layer that blocks water formerly illustrates, in order to balance intensity and water preventing ability.It can choose in actual use poly-
Ethylene glycol terephthalate, polypropylene terephthalate or polybutylene terephthalate (PBT).
In order to guarantee the flexibility of stratified material, guarantee that it, with type, most preferably polypropylene terephthalate, belongs to
In a kind of biological source polyester, there is certain biological decomposition performance after discarding.
The thicknesses of layers that blocks water is 50-150 microns, and preferred thickness is 50-100 microns, and most preferred thickness is 80 microns.
The thicknesses of layers that blocks water be not easy it is excessive, it is excessive influence film material with type, it is excessively thin not easy to be processed.
The selection of ultra-thin aluminum foil layer
The selection of ultra-thin aluminum foil layer uses commercial product substantially, does not limit explicitly.The ultra-thin aluminum foil thickness
Degree is 50-500 microns, and preferred thickness is 100-180 microns, and most preferred thickness is 150 microns.The preferred surface roughness of its structure
Product, roughness low-heat albedo is strong, reduce thermal radiation effect it is preferable.
Other structures selection
Stratified material for Food heat-insulating bag further includes enhancing film layer, and thickness is less than 500 microns.The structure is can
Not have to as far as possible when not using, use reduces interlayer adhesion to a certain degree, preferably the structure without containing enhancing film layer.
The present invention also proposes its application, the application for the stratified material of Food heat-insulating bag in Food heat-insulating bag.
Beneficial technical effect
The present invention in order to obtain it is a kind of with excellent heat insulation effect, material it is durable, it is reusable, with the beneficial layer of type
Shape material, the production particularly suitable for food pack.The excellent effect is derived from structure in product and material
Selection, emphasis are related to the selection of longitudinal film layer, polyurethane film, the structure of membrane waterproofing and specific thickness, and the structure is at this
Field does not report that also the selection without discovery specific structure and thickness resultant effect enlightens, and it is highly beneficial to belong to a kind of performance
Film material, be better than existing commercial product.
Specific embodiment
For the ease of the detailed connection technical solution of the present invention of technical staff, only introduce in an illustrative manner herein several
Kind embodiment, but not pairs of enough any restriction of technical protection scope of the example of the embodiment.It is any without departing substantially from structure of the present invention
The scheme of think of is in protection scope.
Embodiment 1
A kind of stratified material for Food heat-insulating bag, comprising: 150 μm of ultra-thin aluminum foil layer, longitudinal 250 μm of film layer (run through
Hole is about 1%), 500 μm of super soft polyurethane foaming layer and polypropylene terephthalate block water 80 μm of film layer.
Embodiment 2
Polypropylene terephthalate in embodiment 1 replaces with polyethylene terephthalate, other structures item
Part is the same as embodiment 1.
Embodiment 3
Longitudinal film layer that the through hole of 250 μ m-thicks is about 1% in embodiment 1 replaces with longitudinal film that through hole is about 2%
Layer, other structures condition is the same as embodiment 1.
Embodiment 4
Longitudinal film layer and ultra-thin polyurethane foam interlayer increase the enhancement layer of 250 μ m-thicks, other structures item in embodiment 1
Part is the same as embodiment 1.
Comparative example 1
150 μm of ultra-thin aluminum foil layers replace with 40 μm of thickness of ultra-thin aluminum foil layer in embodiment 1, and other structures condition is the same as implementation
Example 1.
Comparative example 2
150 μm of ultra-thin aluminum foil layers replace with 550 μm of thickness of ultra-thin aluminum foil layer in embodiment 1, and other structures condition is the same as real
Apply example 1.
Comparative example 3
Longitudinal film layer that the through hole of 250 μ m-thicks is about 1% in embodiment 1 replaces with the longitudinal direction that through hole is about 3.5%
Film layer, other structures condition is the same as embodiment 1.
Comparative example 4
It is about 1% that longitudinal film layer that the through hole of 250 μ m-thicks is about 1% in embodiment 1, which replaces with 80 μm of through holes of thickness,
Longitudinal film layer, other structures condition is the same as embodiment 1.
Comparative example 5
It is about 1% that longitudinal film layer that the through hole of 250 μ m-thicks is about 1% in embodiment 1, which replaces with 380 μm of through holes of thickness,
Longitudinal film layer, other structures condition is the same as embodiment 1.
Comparative example 6
Super soft polyurethane foaming layer replaces with non-super soft polyurethane foaming layer in embodiment 1, and other structures condition is the same as implementation
Example 1.
Comparative example 7
500 μm used in embodiment 1 of super soft polyurethane foaming layer replaces with 80 μm of super soft polyurethane foaming layer,
His structural condition is the same as embodiment 1.
Comparative example 8
500 μm used in embodiment 1 of super soft polyurethane foaming layer replaces with 800 μm of super soft polyurethane foaming layer,
Other structures condition is the same as embodiment 1.
Comparative example 9
Stratified material for Food heat-insulating bag include: 150 μm of ultra-thin aluminum foil layer, 750 μm of super soft polyurethane foaming layer and
Polypropylene terephthalate blocks water 80 μm of film layer.
Comparative example 10
Stratified material for Food heat-insulating bag includes: 150 μm of ultra-thin aluminum foil layer, (through hole is about for longitudinal 750 μm of film layer
1%) it blocks water 80 μm of film layer with polypropylene terephthalate.
Test method
(1) Determination of conductive coefficients of stratified material:
The test reference ASTM D5470-2012 of the sample of embodiment and comparative example is carried out.
(2) the anti-rubbing performance test of stratified material:
The test reference ASTM F392 of the sample of embodiment and comparative example is carried out, and rubs 45 times/min of rate, temporarily per minute
Surely it sees whether there are the removing of stratiform or breakage, record occurs removing or the damaged time.
(3) peel test method of stratified material
The sample of embodiment and comparative example is carried out using GB8808-88, and polyurethane foaming layer and water blocking layer are pressed from both sides respectively
It holds, test speed uses B method (200+/- 50mm/min).
Test result
The test result of embodiment 1-4 and comparative example 1-10 are referring to following table:
* it is retained as between enhancement layer and polyurethane foaming layer.
Based on the above embodiment with the comparison of comparative example and analysis, the specific practical solution that the discovery present invention selects all is
It is obtained by many experiments, wherein most mechanism are in the prior art without carrying out correlative study.The present invention finally realizes
Heat insulation effect is excellent, material is durable, the excellent results of the stratified material of reusable Food heat-insulating bag.
Claims (13)
1. a kind of stratified material for Food heat-insulating bag, it is characterised in that: stratified material successively includes: ultra-thin aluminum foil layer, is indulged
To film layer, polyurethane foaming layer and the film layer that blocks water；
It is uniformly distributed longitudinal bubble in the longitudinal direction film layer, runs through bubble ratio in the longitudinal direction bubble and is lower than 3%, ratio is
It is calculated with the ratio that perforated area accounts for longitudinal film surface, the mode of longitudinal film layer central hole structure is film layer vertical direction size
Greater than film layer tangent line or the size of parallel direction；
The polyurethane foaming layer is prepared using super soft polyurethane foam；
The ultra-thin aluminum foil layer is with a thickness of 100-180 microns, the rough surface of ultra-thin aluminum foil layer；
The film layer that blocks water is polypropylene terephthalate；
The polyurethane foaming layer is prepared using super soft polyurethane foam, and wherein polyalcohol uses polyether polyol,
20000 or more molecular weight, the isocyanates used use non-aromatic isocyanates.
2. being used for the stratified material of Food heat-insulating bag according to claim 1, it is characterised in that: the ultra-thin aluminum foil thickness degree
It is 150 microns.
3. -2 any stratified material for being used for Food heat-insulating bag according to claim 1, it is characterised in that: the longitudinal direction film layer
With a thickness of 100-350 microns.
4. according to claim 3 be used for Food heat-insulating bag stratified material, it is characterised in that: it is described longitudinal direction thicknesses of layers be
200-300 microns.
5. according to claim 3 be used for Food heat-insulating bag stratified material, it is characterised in that: it is described longitudinal direction thicknesses of layers be
250 microns.
6. -2 any stratified material for being used for Food heat-insulating bag according to claim 1, it is characterised in that: the polyurethane hair
Alveolar layer is with a thickness of 200-1000 microns.
7. being used for the stratified material of Food heat-insulating bag according to claim 6, it is characterised in that: the polyurethane foam thickness
Degree is 400-650 microns.
8. being used for the stratified material of Food heat-insulating bag according to claim 6, it is characterised in that: the polyurethane foam thickness
Degree is 500-550 microns.
9. -2 any stratified material for being used for Food heat-insulating bag according to claim 1, it is characterised in that: the film layer that blocks water
With a thickness of 50-150 microns.
10. being used for the stratified material of Food heat-insulating bag according to claim 9, it is characterised in that: the thicknesses of layers that blocks water
It is 50-100 microns.
11. being used for the stratified material of Food heat-insulating bag according to claim 9, it is characterised in that: the thicknesses of layers that blocks water
It is 80 microns.
12. -2 any stratified material for being used for Food heat-insulating bag according to claim 1, it is characterised in that: further include
Enhance film layer, thickness is less than 500 microns.
13. any stratified material for Food heat-insulating bag answering in Food heat-insulating bag manufacture in claim 1-12
With.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710411156.2A CN107139555B (en) | 2017-06-03 | 2017-06-03 | A kind of stratified material and its application for Food heat-insulating bag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710411156.2A CN107139555B (en) | 2017-06-03 | 2017-06-03 | A kind of stratified material and its application for Food heat-insulating bag |
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| CN107139555A CN107139555A (en) | 2017-09-08 |
| CN107139555B true CN107139555B (en) | 2019-07-16 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2863699Y (en) * | 2006-02-14 | 2007-01-31 | 钟卓文 | Thermal-insulation bag |
| WO2016168041A1 (en) * | 2015-04-15 | 2016-10-20 | Dow Global Technologies Llc | Thermally insulating foam with vertically elongated cells |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2892718Y (en) * | 2006-03-17 | 2007-04-25 | 新乡市登科电器有限责任公司 | Multifunction thermal insulation box |
| CN203392194U (en) * | 2013-08-14 | 2014-01-15 | 北京优冷冷链科技有限公司 | Heat-insulation sheet material and medical heat-insulation box |
| CN103407696A (en) * | 2013-08-14 | 2013-11-27 | 北京优冷冷链科技有限公司 | Insulation board, pharmaceutical insulation box and production method of pharmaceutical insulation box |
| CN203805424U (en) * | 2014-02-18 | 2014-09-03 | 天津基诚瑞和应用材料技术有限公司 | Multi-layer metal foil composited thermoplastic polyurethane resin insulation board |
| CN105479851A (en) * | 2015-11-27 | 2016-04-13 | 太仓清宇特种塑料有限公司 | Bacteriostatic thermal insulation composite material |
-
2017
- 2017-06-03 CN CN201710411156.2A patent/CN107139555B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2863699Y (en) * | 2006-02-14 | 2007-01-31 | 钟卓文 | Thermal-insulation bag |
| WO2016168041A1 (en) * | 2015-04-15 | 2016-10-20 | Dow Global Technologies Llc | Thermally insulating foam with vertically elongated cells |
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| CN107139555A (en) | 2017-09-08 |
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Denomination of invention: A layered material for food thermal insulation bag and its application Effective date of registration: 20211025 Granted publication date: 20190716 Pledgee: Bank of Weifang Co.,Ltd. Anqiu Xing'an road sub branch Pledgor: Zhongplatinum New Materials Co.,Ltd. Registration number: Y2021980011222 |
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Date of cancellation: 20221019 Granted publication date: 20190716 Pledgee: Bank of Weifang Co.,Ltd. Anqiu Xing'an road sub branch Pledgor: Zhongplatinum New Materials Co.,Ltd. Registration number: Y2021980011222 |