CN1827206A - Hygroscopic mixture - Google Patents
Hygroscopic mixture Download PDFInfo
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- CN1827206A CN1827206A CN 200510090244 CN200510090244A CN1827206A CN 1827206 A CN1827206 A CN 1827206A CN 200510090244 CN200510090244 CN 200510090244 CN 200510090244 A CN200510090244 A CN 200510090244A CN 1827206 A CN1827206 A CN 1827206A
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- drier
- pack case
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- moisture
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Abstract
The invention discloses a hygroscopic mixture, comprising one or a plurality of desiccants combined with one or a plurality of absorbents; said hygroscopic mixture can be packed in unwoven packing, to provide a universe desiccants for goods in cargotainer.
Description
Technical field
The present invention relates to a kind of hygroscopic mixture, especially relate in the container that can fast Absorption be used for freight transportation because the super drier of the moisture that condensation produces.
Background technology
Usually can run into the problem that condensation and perspire are arranged on goods by ocean-going ship freight and product.This problem be used on the container of freight transportation and when goods general especially during transportation between the different areas with different climates in the world.The condensation meeting causes the serious breaking-up to goods, and if this problem sufficiently do not solved, the condensation meeting causes distributing the total losses of goods.
When freight transportation, there are a plurality of factors to cause condensation and perspire.According to physical basic theories, the ratio of the amount of the relative humidity of air (RH) steam that to be the amount of water in air steam can hold with air at a certain temperature.Another kind of mode relative humidity can be defined as representing that airborne water content is with respect to open ended in theory water content in to air under the fixed temperature.The relative humidity of representing with percentage (RH), be multiply by 100 then and calculates divided by the air capacity under the uniform temp by the amount of open ended steam in the air.For example 50%RH has represented to comprise in the air it to 50% of open ended steam under the fixed temperature.Therefore, that is to say, also just mean to have reached dew point, produce condensation in this if can obtain 100% relative humidity (RH) at a certain temperature.Dew point is that the part steam pressure becomes saturated temperature spot.
Frequent and variation sharp when freight transportation owing to multiple factor relative humidity RH grade meeting.In these factors some comprise: the time that the variation of the residing global zone of container or seal box, the variation of seasonal weather, local weather, variations in temperature, voyage continue, with the source that produces moisture and improve humidity be the degree of closeness of lake or coastal environments.Miniature portable case or seal box are owing to will be moved on automobile or the aircraft etc. in the house, so they be vulnerable to the influence that other causes the fast-changing factor of relative humidity RH from the indoor open air that is moved to.
Basically when freight transportation, to experience two kinds of different condensations.First is well-known cargo sweat.This phenomenon occurs in goods from the frigid zone or temperate zone when moving to the torrid zone, and the moisture in goods itself is evaporated from goods and is condensate on its packing.Second kind of condensation is called as container to be made soaked with sweat, this phenomenon be when container move on to from the torrid zone or temperate zone colder when regional in the container water in air steam be condensate in the inner surface of container.
When moisture of measure to need removing or relative humidity, must consider the goods of this employing desiccant product and method protection.This for example depends on: the sensitivity of commodity in the weather of term of voyage, navigation cycle, cargo type, container or material, internal container condition, goods and at the tray or the intrinsic moisture of packaging material of the base plate that is adopted and/or wooden or other form.
Usually, the relative quantity of the moisture/water in goods be this quality factor of goods and when loading container the relative humidity of surrounding air.Obviously, tropical air has higher relative humidity amount than temperate zone air.Therefore, the goods that is loaded in the container comprises moisture or moisture, has steam in the air in container simultaneously.
Occur in the normally the poorest situation of condensation in the packaging product itself.This situation provides the most tangible visualization to the effect of moisture damage.Packaging specialist is paid close attention to more often than not is that humidity level is remained on certain limiting value is below horizontal, is lower than the stable affected level that produces condensation and product or other element usually in fact.The effective dry agent can absorb steam the air in packing, relative humidity is reduced to the degree that condensation no longer produces or relative humidity never can go beyond the limit of relative humidity under the condition that described packing exposes.In transportation and storing process, moisture is by sending from the goods pad (woodwork, felt, foam, paper etc.) that is used to support or keep product; And/or send from product itself; And/or the mode that the protection barrier that sees through packing slowly permeates accumulates in the packing.In packing, drier works and absorbs moisture from each moisture source.Some plastics (for example nylon), foam, paper, woodwork, felt, cotton and polyester can both comprise moisture.Woodwork, cotton and paper can hold 14% or more moisture, and some foams can reach 10%.When drier carries out drying to its ambient air layer or nearby the temperature in the zone raises, be included in the interior moisture of these materials and be dispersed in the air.The amount of the drier that is adopted must be worth the moisture that sends from these moisture source.
Air under the hot weather can hold more steam than cold weather.If airborne evaporation capacity keeps constant when temperature improves, then relative humidity can reduce.On the contrary, if temperature reduces, then relative humidity can improve.
When goods (meaning that the steam in its inner air is constant relatively) in the container from the tropical climate area (torrid areas as Indonesia) when being carried to gentleness or cold weather area, generally can produce condensation problem.Variation of temperature can make the air in the container no longer can hold its inner steam.When reaching dew point (or 100% relative humidity RH), as seeing on inner wall of container when the destination is opened, steam becomes drop, is " perspire " and be moist because the condensation container is said to be.
Relative humidity raises to be easy to produce and corrodes (particularly for the material that is made of metal), mushroom and other microorganism (as agricultural product etc.) are provided breeding ground and produce other consequence in the container, and these consequences can reduce the quality of goods in the container usually.Disadvantageous condensation meeting makes goods as drop, and particularly the infringement of electronic product, furniture, machine etc. worsens more.
If the goods that loads in container comprises large quantity of moisture, this situation for example is that agricultural product, other article comprise woodwork/furniture, coffee, tealeaves, spices etc., and then the problems referred to above can become more complicated.For example, if the furniture of 5 tons of weights is arranged, then depend on the kind and the drying process of woodwork in container, furniture itself has the wet amount of 8-25% usually, roughly is equivalent to the water of 400-1250 litre.In transportation, some moisture will be evaporated in the interior air of container, and condensation problem is worsened more.Perhaps this situation also can produce on the contrary, if promptly the wet amount of surrounding air raises, airborne part moisture can be absorbed and impel the growth of mushroom by goods, thereby has reduced the quality of goods.
The process of such a kind of moisture equilibrium at dry side always takes place between the wet amount of the wet amount of air and material.If poor without any steam pressure between object and its surrounding air, then reached wet amount balance (moisture equilibrium at dry side).
Any goods with wet amount all has special problem when there is moisture absorption in it in fact.The wet amount of goods always with the relative humidity of surrounding air tend to balance until wet amount and on every side relative humidity reach balance, if promptly wet amount is very high, and the relative humidity RH in the container is very low, then can produce the evaporation (desorption) of moisture from goods.This phenomenon usually occurs in from gentleness or cold weather area and is transported on any goods of torrid areas, this moment goods and its packing to be observed be moist.If the wet amount of goods is low, the relative humidity RH height of container simultaneously will produce the water sorption of goods.This phenomenon usually occurs in from the torrid areas and is transported on any goods in gentleness/cold weather area, because the condensation on inner wall of container will cause goods mouldy and moist in gentleness/wet rising of measuring in cold weather area (adding the wet amount of higher goods).
The moisture equilibrium at dry side process continue to take place until reach moisture equilibrium at dry side between the relative humidity RH of the wet amount of goods and container always.In transportation, cause the influence of the infringement of above mentioned goods and deterioration therefore to be: (i) internal factor comprise the kind of goods and characteristic, goods original state, goods wet amount and (ii) external factor (transportation environment) comprise the situation of weather conditions in relative humidity in temperature, the container, the gas component in the container, microorganism, haul-cycle time, the shipping process, container and the humidity of base plate/tray of being adopted.
Except above-mentioned content, also should expect also having another one to continue the process that takes place, this process can be impelled the deterioration of cargo state.Process during preface that Here it is, this process is subjected to the influence in freight transportation cycle.
In view of the process and the complicated situation that in the freight transportation process, produce these variations, product, technology and method that huge effort is sought restriction, reduced or eliminated the problems referred to above have been made at internal container.Committed step is to control the relative humidity (RH) of air in the container that the moisture equilibrium at dry side process by variations in temperature and existence causes.
A kind of is to adopt the super desiccant product of describing in Indonesia patent No.ID0 000 374 (application number is S-20000184) in method well known in the art.A kind of desiccant product of describing in the document has and comprises for example compartment of CaCl2 thin slice of drier, and described drier is positioned at the top of the second empty compartment.In use, from surrounding air, absorb moisture, make steam infiltrate CaCl2 (solid-state) and drop onto in its following compartment that is stored in from last compartment with the form of salting liquid by the CaCl2 thin slice.Though this system is that effectively it also has problem when removing unwanted moisture, when container during by disturbance for example during the container unloading, the liquid in the following compartment can leak from compartment or overflow.
Summary of the invention
Therefore, the relative humidity (RH) that the objective of the invention is to control container is to prevent condensation and to obtain moisture equilibrium at dry side (wet amount balance) in the desirable container.Another object of the present invention is the transported/stored situation that obtains the best in the container, so that goods keeps higher quality.
Another object of the present invention provide a kind of can control container relative humidity (RH) and can be placed/be installed in any container at an easy rate or the cargo ship cargo hold in desiccant product.
The purpose of the present invention and its specific embodiment is to solve above definite requirement and the problem relevant with the super desiccant product of routine.
Desiccant product of the present invention has overcome the problem that liquid overflows by adopting the one or more drier that combine with one or more absorbents.This combined material particularly when being used for suitable packaging facilities the control to moisture very effective, and avoided the gathering of low-viscosity (mobile) liquid.
Therefore, according to the invention provides a kind of hygroscopic mixture, described mixture comprises the one or more drier that combine with one or more absorbents.
In a preferred embodiment, for example CaCl2 or saturated salt solution or acid solution of any material with wetting balance value of described drier or component.Preferably, described drier is a kind of material that produces product liquid when removing moisture from air.In most preferred embodiment, described drier is CaCl2, more preferably is the CaCl2 thin slice.
Described mixture has following characteristic, and when the product liquid of described drier was absorbed the agent absorption, described synthetic was the solid absorbent that liquid is inhaled into, or the liquid in a kind of and the drier forms the material of gel or high viscosity fluid.Described synthetic product is gluey.
Described absorbent can be any material that can absorption dehydration agent liquid product.Preferably, it is the material that liquid in a kind of and the drier forms gel or gluey product.But described material tapioca, other starchy material, cellulosic material or the similar natural materials that extracts from marine alga, it is also a kind of for example to be the synthetic of polyvinylpyrrolidone, polyvinyl alcohol or polyacrylamide.A kind of preferred material is the aleuronat polymer.
In a preferred embodiment, hygroscopic mixture of the present invention is sealed in the pack case, and described pack case is allowed moisture to enter pack case from the air that surrounds pack case but do not allow to discharge pack case and enter air or the material of external environment condition is made at any liquid of pack case inside by a kind of.In a preferred embodiment, the material that is used to make described pack case is the non-material of knitting, and in preferred embodiment, described material is the non-polyolefine material of knitting, and more preferably is polythene material, most preferably is high-density polyethylene material.A kind of suitable material is Tyvek .Tyvek is a kind of spunbond high-density polyethylene material, is similar to the paraffin paper with high whiteness and specific intensity, and this material be along with the variation of humidity can keep its size and dimension constant, and can be used to food and medicine packing.It can not make dust infiltrate in the container, prevents stain and drawing out of going mouldy, and can not reduce the absorptivity of its drier that holds.In another embodiment, one or more pack case with hygroscopic mixture are also sealed within spunbonded materials for example in the non-woven material, most preferably are a kind ofly to knit spunbond polypropylene material based on non-.We also can with the plastics of Tyvek material and other classification for example materials such as polypropylene, polyethylene, laminated plastic, nylon combine, thereby as long as they just can be used for packing can be sealed mutually the time.
Described hygroscopic mixture can be set in individual packaging shell or a plurality of pack case.The spunbond packing that described a plurality of pack case can be sealed in container for example in the packaging bag to be used as a kind of desiccant product.Selectively be that each pack case can be formed on together and for example pack as each raw material packet with the form of layered arrangement or with the form that pack case is listed as with backing plate.
Adopt individual layer or preferred double-deck non-pack case and the mixture of the present invention knitted to combine a kind of special effective dry agent product is provided.The CaCl of the comparable routine of this product
2Desiccant product more effective 300%.More moisture can be eliminated from environment and not have liquid to overflow or leak.
Desiccant product of the present invention more safely is used to some goods having under the form of packing.Because it can be with vertical hanging, horizontally suspend and horizontally disposed form is placed on the multiple position, therefore desiccant product of the present invention is more flexibly.
The product benefit of the present invention that is arranged in other article is: its steam in reducing any container also prevents that in fact aspect the condensation be very effective; Because it can be processed according to general waste material after use, therefore this product of the present invention is favourable to environmental protection; And described container can be recovered and not include harmful substances.Have the intrinsic product that increases technological problems owing to needn't return when handling, therefore above-mentioned disposable characteristics also are favourable.In addition, described product does not need the additional space that is used to install, and by the vertical hanging along the container shell curve, it can directly be installed on the outwards outstanding curved wall of container, and perhaps it can be placed on goods originally or on every side just on one's body.Therefore, to have packaged products be highly versatile as a kind of comprehensive, omnibearing absorbent in the present invention.Be improved by the versatility that adopts this product of multipurpose spin safe hook (Swivel Snap Hook).This is a kind of specially designed hook, has the multipurpose function, and it is called as spin safe hook (Swivel Snap Hook).
Described packing can be made into many sizes and capacity, and it depends on the designing requirement to final products.The product of 2 grams, 4 grams, 8 grams, 100 grams, 200 grams, 1 kilogram, 2 kilograms or other size can be provided at an easy rate.Our component of mixing depends on absorptivity, the absorbent that we adopt and some situations that we will face subsequently simultaneously.For example, if we adopt tapioca, we can adopt 1: 1 general proportion of composing (50% calcium chloride and 50% tapioca) so, improve or reduce the ratio of absorbent according to appropriate functional.
We also can combine these packings successively, make it as chain.For example, we can join together the packing of some 100 grams successively, constitute the about 1.5 kilograms finished product of gross weight.
Description of drawings
In order to understand the present invention better, and show how like products is implemented, shown in additional schematic diagram, various specific embodiments of the present invention are described now by example, wherein:
Fig. 1 represents to contain the different size of hygroscopic mixture of the present invention and the individual packaging shell of shape,
Fig. 2 represents that two the present invention that contain hygroscopic mixture of the present invention are together with each other as the pack case of small-sized backing plate,
Fig. 3 represents to contain six pack case that the present invention is together with each other of hygroscopic mixture of the present invention, and
Fig. 4 represents to contain the pack case that a series of the present invention of hygroscopic mixture of the present invention combine mutually successively.
Detailed description of the present invention
With reference to Fig. 1, pack case is any suitable shape or size.The size that is adopted is different according to design.And the shape that is adopted can comprise rectangle, square, triangle, circle, ellipse or the like.
With reference to Fig. 2, two pack case are combined, be pasted together with the combined liner plate as desiccant product abreast.Its true form also is can change with selectable as required.This product is suitable for being placed on the goods.
With reference to Fig. 3, six combined and mutual stickups of triangle pack case are to form the flat hexagon backing plate of desiccant product.This product is suitable for being placed on the goods.
With reference to Fig. 4, a plurality ofly be essentially foursquare pack case and linked together successively or continuously mutually, to form a rectangular band desiccant product.Hook at this band top can be replaced by safety door hook (innovative hook), and we claim that this safety door hook is a multipurpose spin safe hook.Product of the present invention is suitable for hanging along the wall body of container or the top board that passes container in this layout, perhaps be suitable for being arranged on the goods/down or around it.
Further describe the present invention by example with reference to following examples now.
Embodiment
The calcium chloride of 77%, 93% or other purity of thin slice, particle or powder type and the aleuronat mixed with polymers of adding absorbent.This mixture is used to the packing of the Tyvek material of sealing is filled.With the non-spunbond polypropylene material (Heigen PP non-woven material) of knitting described the packing done further protection then.
In order to illustrate to have proposed the above-mentioned description of this invention with illustrative purposes.Obviously, can recognize in this case, must be understood that to be in the scope of determining by following claim of the present invention by the reference accompanying drawing and to their change and the description made of variation.
Claims (12)
1. hygroscopic mixture, it comprises the one or more drier that combine with one or more absorbents.
2. mixture as claimed in claim 1 is characterized in that, the liquid in described absorbent energy absorption dehydration agent and the moisture.
3. mixture as claimed in claim 1 or 2 is characterized in that, described drier is a kind of material that produces product liquid when removing moisture from air.
4. mixture as claimed in claim 3 is characterized in that described drier is CaCl
2
5. any as described above described mixture of claim, it is characterized in that described absorbent is selected from following one or more materials: tapioca, starchy material, cellulosic material, the material that from marine alga, extracts, polyvinylpyrrolidone, polyvinyl alcohol, polyacrylamide or aleuronat polymer.
6. the drier of a band packing that comprises aforementioned any described mixture of claim and pack case, described pack case is allowed moisture to enter pack case from the air that surrounds pack case but is not allowed to discharge pack case and enter air or the material of external environment condition is made at any liquid of pack case inside by a kind of.
7. the drier of band as claimed in claim 6 packing is characterized in that, the described material that is used to make described pack case is the non-material of knitting.
8. the drier of band packing as claimed in claim 7 is characterized in that described non-woven material is a polyolefine material, more preferably is polythene material, most preferably is high-density polyethylene material.
9. as the drier of any described band packing of claim 6-8, it is characterized in that one or more pack case that comprise hygroscopic mixture further are sealed in the spunbonded materials.
10. the drier of band packing as claimed in claim 9 is characterized in that described material is the non-material of knitting, and more preferably is based on the non-polypropylene of knitting spunbonded materials.
11. the drier of the described band packing of any as described above claim is characterized in that the drier of described band packing is the backing plate form that pack case links to each other.
12. the drier as any described band packing of claim 1-10 is characterized in that described pack case is joined together successively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IDP00200400397 | 2004-08-10 | ||
| ID20040397 | 2004-08-10 |
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| CN1827206A true CN1827206A (en) | 2006-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510090244 Pending CN1827206A (en) | 2004-08-10 | 2005-08-10 | Hygroscopic mixture |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284270A (en) * | 2011-06-07 | 2011-12-21 | 王春录 | Preparation for purifying storage environment and regulating environmental humidity and preparation process thereof |
| CN103566910A (en) * | 2013-10-15 | 2014-02-12 | 昆山威胜干燥剂研发中心有限公司 | Drying agent |
| CN105506646A (en) * | 2015-12-25 | 2016-04-20 | 瓮福达州化工有限责任公司 | Gas-fired boiler maintenance method |
| CN113385152A (en) * | 2021-06-15 | 2021-09-14 | 上海孚分环保材料有限公司 | Gel desiccant particles and preparation method thereof |
-
2005
- 2005-08-10 CN CN 200510090244 patent/CN1827206A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284270A (en) * | 2011-06-07 | 2011-12-21 | 王春录 | Preparation for purifying storage environment and regulating environmental humidity and preparation process thereof |
| CN102284270B (en) * | 2011-06-07 | 2013-06-05 | 王春录 | Preparation process of formulation for purifying storage environment and regulating environmental humidity |
| CN103566910A (en) * | 2013-10-15 | 2014-02-12 | 昆山威胜干燥剂研发中心有限公司 | Drying agent |
| CN103566910B (en) * | 2013-10-15 | 2015-06-17 | 昆山威胜干燥剂研发中心有限公司 | Drying agent |
| CN105506646A (en) * | 2015-12-25 | 2016-04-20 | 瓮福达州化工有限责任公司 | Gas-fired boiler maintenance method |
| CN113385152A (en) * | 2021-06-15 | 2021-09-14 | 上海孚分环保材料有限公司 | Gel desiccant particles and preparation method thereof |
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