WO2018074860A2 - Moisture absorbing bar and vacuum double-layer glass comprising same - Google Patents

Abstract

A moisture absorbing bar according to the present invention comprises a moisture absorbing agent prepared through raw material feeding, pulverization/classification, collection, dust collection, intermediate inspection, transfer, storage, automatic packaging, transportation, and packaging. The moisture absorbing agent comprises calcium oxide, polyethylene, low polymer wax, calcium stearate, zinc stearate, and a dispersing agent, and the blending percent of the calcium oxide is in the range of 50% to 60%.

Description

Hygroscopic bar and vacuum multilayer glass having the same

The present invention relates to a moisture absorbing bar and a vacuum laminated glass having the same, and in particular, a moisture absorbing bar capable of minimizing moisture that may occur between a plurality of glass forming the vacuum laminated glass in a state of being added to the vacuum laminated glass forming a building window. It relates to a vacuum multilayer glass having the same.

In general, windows that are constructed together when building a building have the highest heat loss of the building, and are inferior in thermal insulation effect.The soundproof effect from the outside is remarkably inferior, so the glass windows constructed these days are vacuum glass to enhance the insulation and sound insulation effect. Or many windows and windows using laminated glass are being constructed.

The vacuum glass is made of a plurality of plate glass, but between the two glass plates in which the internal space is maintained by a spacer installed on the rim to make a vacuum state, between the glass plates spaced by the gap between the one side of the insulating gas inside Insulation and sound insulation by injection is the mainstream.

When the house is heated in winter through the laminated glass as described above, the interior glass plate receives the heating heat of the house, and the outer glass plate generates a severe temperature deviation affected by the external sub-zero temperature. Since moisture is absorbed, condensation may occur inside the multilayer glass due to the moisture, and the glass may not be easily seen.

As a method for removing moisture that may occur on the multilayer glass, there may be a method of injecting a moisture absorbent.

Hygroscopic agent is calcium oxide (Calcium oxide) is the main component, it is an additive for rubber, plastic manufactured through a grinding, coating, weighing, packaging process.

The moisture absorbent literally acts to absorb or absorb moisture, and is used for the purpose of preventing the water from being heated to a temperature and changing to water vapor in the process of extruding and molding a rubber-plastic product. In English, Moisture absorbents may be appropriate but sometimes used as antifoaming agents.

Conventional absorbents are mainly used porous materials such as silica gel and chlorides such as calcium chloride or magnesium chloride, and silica gel is harmless to human body and has the advantage of regenerating the absorbent by adding heat to the absorbent even after death, but the price is high. At low humidity, there is a disadvantage that the range of use is limited because the amount of moisture absorption is not so large. In addition, chloride-based moisture absorbents such as calcium chloride have a strong deliquescent property, so the moisture absorption amount is very large, whereas the moisture absorbent is dissolved by the excessively absorbed moisture. There was a problem that excess moisture leaked to the outside.

Conventional literature on a vacuum laminating apparatus for manufacturing a glass is disclosed in Korean Patent Publication No. 10-1606857, which removes moisture and vacuums between a glass plate attached to two layers and improves heat insulation and sound insulation while condensing. The present invention relates to a method for manufacturing a vacuum multilayer glass which easily produces a vacuum laminated glass which is prevented from developing.

<Preceding technical literature>

<Patent Documents>

(Patent Document 1) Republic of Korea Patent No. 10-1606857

The present invention is to solve the above problems, a moisture absorption bar and a vacuum double layer having the same to minimize the moisture that can occur between a plurality of glass constituting the vacuum laminated glass in a state added in the vacuum laminated glass forming a building glass window The purpose is to provide glass.

In order to achieve the above object, in the absorbent bar having a moisture absorbent prepared through the raw material input, crushing / classification, collection, dust collection, intermediate inspection, transfer, storage, automatic packaging, transport and packaging process according to the present invention, It includes Calcium Oxide, Polyethylene, Low Polymer Wax, Calcium Stearate, Zinc Stearate and Dispersing Agent, and the compounding ratio of calcium oxide is in the range of 50% or more and less than 60% by weight.

The content of the polyethylene, low polymer wax, calcium stearate, zinc stearate and dispersing agent is 30 to 80%, 1 to 8%, 0.5 to 2%, 0.5 to 3%, 0.5 to 5% by weight.

The purity of the Calcium Oxide is 75 to 95%.

In the production of the moisture absorbent, the calcium oxide supplied from the hopper 3 is pulverized into powder through a classifier 6, and the coating liquid supply part 14 disposed on the side of the vibrating body 10 containing the pulverized calcium oxide. By feeding the fatty acid through the coating).

In the vacuum multilayer glass having the moisture absorbing bar, the moisture absorbent is inserted between a pair of spaced plate glass constituting the vacuum multilayer glass.

The moisture absorption bar according to the present invention as described above can minimize the moisture that may occur between the plurality of glass constituting the vacuum laminated glass in a state added in the vacuum laminated glass forming a building glass window.

1 is a process chart showing the manufacturing process of the moisture absorbent constituting the moisture absorbing bar according to the present invention.

Figure 2 is a block diagram showing a manufacturing process of the moisture absorption bar according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Prior to the description of the present invention, the following specific structures or functional descriptions are merely illustrated for the purpose of describing embodiments according to the inventive concept, and the embodiments according to the inventive concept may be implemented in various forms. It should not be construed as limited to the embodiments described herein.

In addition, embodiments in accordance with the concept of the present invention can be variously modified and have a variety of forms, specific embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a particular disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Hereinafter, with reference to Figure 1 will be described the manufacturing process of the moisture absorbent forming the moisture absorbing bar according to the present invention.

The manufacturing process of the absorbent is subject to raw material input, grinding / classification, collection, dust collection, intermediate inspection, transfer, storage, automatic packaging, transportation and packaging (loading).

In the raw material input process, a raw material bag 2 containing calcium oxide as a raw material is placed on the hopper 3 through the hoist crane 1. In this state, the raw material bag 2 is supplied with calcium oxide into the hopper 3.

The input of raw materials is received and manually inspected for the production of raw materials.

The compounding ratio of received raw materials is shown in Table 1 below. The unit is weight ratio.

In the present invention, the compounding ratio is based on the weight ratio unless otherwise specified.

Raw material name	Compounding cost
Calcium Oxide (Purity 75-95%)	40-70%
Polyethylene	20-55%
Low polymer wax	1-8%
Calcium Stearate	0.5-2%
Zinc StearateStabilizer, Dispersing Agent	0.5-3%
	0.5-5%

In view of the compounding ratio of calcium oxide in the incoming raw materials, the moisture absorbing power is significantly lowered in the case of more than 60% or less than 50%, so that the effect of water absorption in the multilayer glass tends to be lowered. It may be desirable to have a range of at least 50% and less than 60%.

Next, the pulverization / classification process supplies calcium oxide to the mill 5 via the feeder 4. The calcium oxide supplied to the mill 5 is pulverized into powder through the classifier 6.

The finely divided calcium oxide particles are collected through the pulverization / classification process. The collection is carried out through a process using a centrifugal force in the cyclone 9, and the calcium oxide fine particles separated and collected in the cyclone 9 are Calcium oxide fine particles or dusts which move to the vibrating body 10 through the downward direction and on the other hand that do not satisfy the reference particle size of the predetermined range among the calcium oxide fine particles are again passed through the dust collector 8 and the blower 7. Through the mill (5) and the classifier (6) it has a process of grinding again to the powder.

That is, among the calcium oxide fine particles collected by the cyclone 9, only the calcium oxide fine particles satisfying the range of the reference particle size of 30-50 mm are moved to the vibrator 10, and the calcium oxide fine particles not satisfying the standard particle size Will go through an interim inspection process that cycles again.

The vibrator 10 supplies the surfactant, oil, fatty acid, and the like through the coating liquid supply unit 14 disposed on the side thereof. That is, the coating is performed by spraying a fatty acid including sterinic acid on the calcium oxide fine particles introduced into the vibrating body 10.

The calcium oxide particles having the coating operation are transferred to the storage tank 12 through the disk conveyor (11). In the storage tank 12, the calcium oxide particles coated with fatty acids form a dough shape in a slightly moist state.

The contents stored in the storage tank 12 are transferred to the automatic packaging machine 16 through the transfer screw 13. The absorbent product packaged in the automatic packing machine 16 is subjected to a process of being loaded on the workbench via the conveyor belt 17 through an inspection process.

The present invention can absorb 30% or more of the weight of the absorbent through coating with calcium oxide (Calcium Oxide) with fatty acid, etc., and absorbs moisture and air contained in the rubber / plastic compound, and there is no bubble and uniform density. You can get the product. At this time, calcium oxide is converted into calcium hydroxide (Calcium Hydroxide) to act as a filler.

The moisture absorbed by the hygroscopic agent according to the present invention changes to calcium oxide in a reversible reaction at 500 ° C. or higher, and is present as calcium hydroxide in rubber or plastic without being re-released at a temperature in the range of 200-250 ° C., which is the vulcanization temperature of continuous extrusion. do.

The process of changing calcium oxide into calcium hydroxide is as follows.

CaO + H ₂ O → Ca (OH) ₂ + 15.1 Kcal / mol

The moisture absorbent according to the present invention also acts as a vulcanization aid because it is a metal oxide compound such as zinc oxide and magnesium oxide in the rubber compounding agent. For example, although magnesium oxide has been conventionally used as a vulcanization aid in synthetic rubber such as neoprene (CR), the effect is not different even if it is used as a hygroscopic agent according to the present invention.

 The moisture absorbent according to the present invention has an effect of preventing various side effects caused by hydrogen chloride by acting as a receptor for the free chlorine group during the processing process in the blending agent of a polymer having a chlorine group such as CR and PVC.

Meanwhile, the moisture absorbent according to the present invention is used as an additive for rubber / plastic for absorbing moisture.

In general, many rubber parts or plastic parts (packing, gasket, weather strip) are used in automobiles, trains, electric cars, ships, and aluminum chassis. These parts are manufactured by extrusion or injection operations. The compound before extrusion is contained in the moisture and air, and during the extrusion operation has a problem that a certain shape / shape / cross section is not made due to the influence of moisture. In the case where a proper amount of the moisture absorbent according to the present invention is added thereto, water and air can be completely removed to obtain a product having no bubble and a constant shape. The moisture absorbent according to the present invention also functions as an antifoaming agent. On the other hand, the use of the moisture absorbent according to the present invention on the extrudate facilitates shape control, improves extrudability, and improves quality such as surface improvement and vulcanizability. In addition, it has excellent effects such as cost-down and defect reduction. In addition, it can be used as an essential chemical for release extrusion products of rubber / plastic.

Hereinafter, a manufacturing process of the hygroscopic bar according to the present invention will be described with reference to FIG. 2.

The manufacturing apparatus of the moisture absorbing bar includes a raw material mixer, an extruder that performs an extrusion process for the material blended in the raw material mixer, a cooler that performs water-cooling cooling of the material passed through the extruder, and a constant size for the extrudate passed through the cooler. It includes a cutting machine for cutting according to the specifications of the package and a packaging machine for packaging the product through the cutter by weight.

The manufacturing process of the hygroscopic bar occurs through a series of processes such as raw material receipt, compounding in a raw material mixer, extrusion through an extruder, cooling, cutting, packaging, and inspection / unloading.

The cross-sectional shape of the manufactured moisture absorbing bar can adopt any one of a shape including a circle, a triangle, and a rectangle. On the other hand, as an example, a circular cross-section product having a diameter of 3 mm or a product having a diameter of 6 mm and 9 mm may be produced in a peanut shape.

First, the raw material input is received and manually inspected raw materials required for production of the product.

The mixing of the raw materials is carried out in a bag filter, specifically, the treatment capacity is 140 m 3 / min.

In the mixing of the raw materials, the raw materials and the like are mixed using a raw material mixer which is a mixing facility. For example, the raw material blender proceeds with a processing capacity of 50 HP × 1.

Extrusion extrudes the blended raw material using the extruder 2, for example, it runs with the capacity of 50HPx1 machine.

The extrusion temperature of the cylinders constituting the inside of the extruder is shown in Table 2 below.

1 room	2 rooms	3 rooms	4 rooms	5 rooms	Dice
160 ~ 180 ℃	170 ~ 190 ℃	160 ~ 180 ℃	110 ~ 130 ℃	140 ~ 160 ℃	150 ~ 170 ℃

On the other hand, the screw speed of the extruder is 1200 to 1600 RPM.

The cooling is performed by using a water bath of the semi-finished product extruded in the cooler at 15-30 ° C. The bath is run in a single bath of 0.9 m 3 volume.

Cutting is to cut the extrudate by a certain size using a cutting machine, a cutting facility. Cutting proceeds with a processing capacity of 3 HP × 1.

The packaging is packed by weight in the packaging machine as required.

In the inspection / shipment process, all quality inspections and finished products are delivered to customers.

Hereinafter, the moisture absorption bar according to the present invention and a conventional moisture absorbent will be described.

First, 20 g of the hygroscopic bar and the conventional granule type (zeolite or silica gel), which are stick type hygroscopic agents according to the present invention, are weighed up to 0.0001 g, respectively.

Place the water in the crucible in an airtight container.

Each weighing stick-type hygroscopic bar and granule type are placed in a closed container.

Leave the container closed for five days in a sunny day with a six-day test period.

Remove the sample and weigh to 0.0001g to calculate the absorbance.

The results of testing the water absorption are shown in Table 3 below.

	Hygroscopic bar	Granule
Weight (g)	20.0332	20.0812
Increased weight (g)	22.9711	20.3619
absorptivity(%)	14.7	1.4

Advantages of the hygroscopic bar according to the present invention are as follows.

It does not release water even if the internal temperature of the multilayer glass rises.

Conventional granule type (zeolite, etc.) releases moisture back into the air when it is 60C or more, but stick-type products cannot be released in the general gas phase because it releases water when it is 500C or more.

When argon gas is injected into the multilayer glass, it does not absorb gas.

Conventional granule type (zeolite, etc.) absorbs more than 30% of the injected gas by adsorbing the argon gas injected into the multilayer glass due to the porosity of the product, but lowers the main function of the argon gas.

In the stick type moisture absorption bar according to the present invention, the argon gas is an inert gas and thus does not react at all with the stick type product, so that the gas does not absorb or adsorb the gas to maintain the function of the argon gas.

The technical problem of the present invention is achieved by the technical configuration as described above, although described by the limited embodiments and drawings, but is not limited thereto and is extremely easy by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the technical spirit of the present invention and the claims to be described below.

Claims (4)

1. In the moisture absorbing bar having a moisture absorbent prepared by the raw material input, grinding / classification, collection, dust collection, intermediate inspection, transfer, storage, automatic packaging, transport and packaging process,

   The moisture absorbent,

   Calcium Oxide, Polyethylene, Low Polymer Wax, Calcium Stearate, Zinc Stearate and Dispersing Agent,

   Does not contain porous silica gel

   The blending ratio of the calcium oxide is 50% or more and less than 60% by weight,

   The content of the polyethylene, low polymer wax, calcium stearate, zinc stearate and dispersing agent are each by weight,

   30 ~ 47.5%, 1 ~ 8%, 0.5 ~ 2%, 0.5 ~ 3%, 0.5 ~ 5% phosphorus

   Moisture absorption bar is added between the glass forming the windows of the building.
2. The method of claim 1,

   Purity of the Calcium Oxide is 75 to 95%,

   Hygroscopic bar.
3. The method of claim 1,

   Preparation of the hygroscopic agent,

   The calcium oxide supplied from the hopper 3 is pulverized into a powder through a classifier 6, and the fatty acid is supplied through the coating liquid supply unit 14 disposed on the side of the vibrating body 10 containing the pulverized calcium oxide. Made by coating,

   Hygroscopic bar.
4. In the vacuum multilayer glass having a moisture absorption bar according to claim 1,

   Vacuum laminated glass in a state in which the moisture absorbent is inserted between the pair of spaced apart glass panes forming the vacuum laminated glass.

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