KR20160120487A - Fireproof damping board and manufacturing method thereof - Google Patents
Fireproof damping board and manufacturing method thereof Download PDFInfo
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- KR20160120487A KR20160120487A KR1020150049584A KR20150049584A KR20160120487A KR 20160120487 A KR20160120487 A KR 20160120487A KR 1020150049584 A KR1020150049584 A KR 1020150049584A KR 20150049584 A KR20150049584 A KR 20150049584A KR 20160120487 A KR20160120487 A KR 20160120487A
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- flame retardant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/06—Making multilayered articles
-
- C08K3/0016—
-
- C08K3/0033—
-
- C08K3/0058—
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The present invention relates to a flame retardant packing buffer board composition and a method for producing the same. More particularly, the present invention relates to a flame retardant packing buffer board composition and a method for producing the same. A kneading step of kneading an oxidizing agent and an accelerator, an additive mixing step of mixing the kneaded material with the foaming agent and the cross-linking agent through the kneading step, a kneading step of kneading the mixture prepared through the additive mixing step, An extrusion molding step of extruding a mixture kneaded through the extrusion molding step to form a sheet, an aging step of aging the molded product produced through the extrusion molding step, and a step of laminating a plurality of aged molded articles through a heating step And is then produced through a compression foaming step.
The flame retardant packing buffer board manufactured through the above process is excellent in mechanical properties to safely protect the package, exhibits excellent flame retardancy, exhibits a sterilization and deodorizing effect by using a filler containing zeolite, A crosslinking agent is used and exhibits excellent merchantability.
Description
More particularly, the present invention relates to a flame retardant packing buffer board composition and a method for producing the same. More specifically, the present invention relates to a flame retardant packing buffer board composition and a method for producing the same. In addition, the present invention relates to a flame retardant packaging composition for a packaging board and a method for producing the composition.
In general, as the exports of automobiles and their parts are increasing, the development of appropriate packaging materials is also taking place. In recent years, various regulations have been enforced by enforcing environmental regulations of packaging materials and raw materials, such as environment friendliness, human health and recyclability, in various countries around the world. Therefore, the packaging material developed in the future is easy to recycle and has a stimulating odor, heavy metals, Formaldehyde, benzene, ethylbenzene, xylene, and styrene.
However, the conventional polyethylene (PE) automobile parts packaging material is produced by the continuous extrusion method, and the price is comparatively low, it is very light, and the processing is easy, but the hardness of the inside and the inside is not constant, As a buffering agent, there is a problem that since harmful components are highly detected in a human body by adhesive using an adhesive, it is not environmentally friendly due to difficulty in recycling, and physical properties such as heat resistance, restoring force and buffering power are deteriorated.
In order to solve the above problem, packing buffer for ethylene-vinyl acetate (EVA) material has been used recently. The packing buffer board for packaging of ethylene vinyl acetate is cut by press foaming process using a die of 30 to 60 mm It does not require the use of adhesives and has almost the same hardness as the inside and the inside. It has excellent restoring force and buffering power. However, it is required to mix a relatively large amount of filler for foaming and has a very high degree of crosslinking so that it is very difficult to recycle, There is a problem that a stimulating odor peculiar to the resin is emitted and a volatile harmful component is released in a large amount.
It is an object of the present invention to provide a zeolite-containing zeolite which is excellent in mechanical properties, safely protects a package, exhibits excellent flame retardancy, uses a zeolite-containing filler to exhibit an effect of sterilization and deodorization, And a method for producing the same.
An object of the present invention is achieved by providing a buffer board composition for a flame retardant packaging, characterized by comprising low density polyethylene, carbon black, a filler, a flame retardant, an oxidizing agent, a foaming agent, a crosslinking agent and an accelerator.
According to a preferred feature of the present invention, the flame retardant packing buffer board composition comprises 100 parts by weight of a low density polyethylene mixture, 13 to 15 parts by weight of a filler, 30 to 40 parts by weight of a flame retardant, 2 to 3 parts by weight of an oxidizing agent, 0.4 to 0.6 parts by weight of a crosslinking agent and 3 to 5 parts by weight of an accelerator.
According to a further preferred feature of the present invention, the filler is made by mixing zeolite and calcium carbonate in a weight ratio of 1: 1.
According to a further preferred feature of the present invention, the crosslinking agent is an inorganic peroxide crosslinking agent.
According to a further preferred feature of the present invention, the promoter is made of stearic acid.
It is another object of the present invention to provide a kneading method for kneading a low density polyethylene mixture, a filler, a flame retardant, an oxidizing agent and an accelerator, a kneading step for kneading the kneaded product through the kneading step, an additive mixing step for mixing the blowing agent and the cross- A kneading step of kneading the mixture produced through the kneading step, an extrusion molding step of extruding the kneaded mixture through the kneading step into a sheet shape, an aging step of aging the molded product produced through the extrusion molding step, And a compression foaming step of laminating a plurality of the molded articles aged through the compression molding and compressing them with a heated press machine.
According to a preferred feature of the present invention, the raw material kneading step comprises mixing 100 parts by weight of a low density polyethylene mixture, 13 to 15 parts by weight of a filler, 30 to 40 parts by weight of a flame retardant, 2 to 3 parts by weight of an oxidizing agent and 3 to 5 parts by weight of an accelerator .
According to a further preferred feature of the present invention, the raw material kneading step is performed at a temperature of 110 to 120 DEG C for 7 to 9 minutes.
According to a further preferred feature of the present invention, the additive mixing step comprises mixing 4 to 6 parts by weight of a foaming agent and 0.4 to 0.6 parts by weight of a cross-linking agent with respect to 100 parts by weight of low density polyethylene contained in the kneaded material through the raw material dough step do.
According to a further preferred feature of the present invention, the additive mixing step is performed at a temperature of 110 to 120 ° C for 1 to 3 minutes.
According to a further preferred feature of the present invention, the kneading step is performed at a speed of 15 to 25 rpm for 10 to 20 minutes by using a preheating mixing roll at a temperature of 110 to 120 ° C.
According to a further preferred feature of the present invention, the extrusion molding step comprises extruding the kneaded mixture through the kneading step to a thickness of 1 to 2 millimeters using an extruder preheated to a temperature of 110 to 130 ° C .
According to still another more preferred characteristic of the present invention, the aging step is carried out by introducing the shaped material produced through the extrusion molding step into a blowing-type drying apparatus and cooling to a temperature of 40 to 50 ° C.
According to an even more preferred feature of the present invention, the compression foaming step is a step of laminating a plurality of the aged molded articles through the aging step and heating at a temperature of 165 to 175 ° C to a pressure of 150 kg / cm 2 As shown in Fig.
The flame retardant packing buffer board composition and the method for producing the same according to the present invention are excellent in mechanical properties to safely protect the package, exhibit excellent flame retardancy, exhibit a sterilization and deodorizing effect by using a filler containing zeolite, A crosslinking agent which is not used is used to exhibit an excellent effect of providing a flame retardant packing buffer board exhibiting excellent merchantability.
1 is a flowchart showing a manufacturing method of a flame retardant packaging buffer board according to the present invention.
Hereinafter, preferred embodiments of the present invention and physical properties of the respective components will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, And this does not mean that the technical idea and scope of the present invention are limited.
The flame retardant packaging buffer board composition according to the present invention comprises 100 parts by weight of a low-density polyethylene mixture, 13 to 15 parts by weight of a low-density polyethylene mixture, 30 to 40 parts by weight of a flame retardant, 2 to 3 parts by weight of an oxidizing agent, 4 to 6 parts by weight of a blowing agent, 0.4 to 0.6 parts by weight of a crosslinking agent and 3 to 5 parts by weight of an accelerator.
The low-density polyethylene mixture is prepared by mixing 100 parts by weight of low-density polyethylene with 5 to 6 parts by weight of carbon black as a main material of the flame retardant packing buffer board composition according to the present invention. The low- Improves the mechanical properties of the cushioning composition for packaging, and imparts water resistance, chemical resistance and electrical insulation.
The filler is mixed with 13 to 15 parts by weight of zeolite and calcium carbonate. It is more preferable that zeolite and calcium carbonate are mixed in a weight ratio of 1: 1, and the mechanical strength of the flame retardant packing buffering board composition according to the present invention And it is an object of the present invention to provide an environmentally friendly flame retardant packing buffer composition for packaging comprising an environmentally friendly material and also to provide a buffer board having a low density.
If the content of the filler is less than 13 parts by weight, the above effect is insignificant. If the content of the filler exceeds 15 parts by weight, the water resistance, chemical resistance and electrical insulation of the buffer board deteriorate.
In addition, zeolite is contained in the filler to exhibit an antibacterial and deodorizing effect. If the content of zeolite contained in the filler is lower than that of calcium carbonate, the effect of lowering the density of the buffer board is lowered, and the antibacterial and deodorizing effect is lowered.
If the content of the flame retardant is less than 30 parts by weight, the flame retardant effect is insignificant. When the content of the flame retardant is less than 30 parts by weight, Exceeds 40 parts by weight, the weight of the buffer board may increase and the mechanical properties may deteriorate.
At this time, it is preferable that the flame retardant is composed of a halogen-free system, and examples thereof include triaryl phosphate, aromatic phosphate ester, 2-ethylhexyldiphenyl phosphate, triethylphosphate, cresylphenylphosphate, resolved diphenylphosphate, chlorethylphosphate, -Chloropropyl phosphate, tris-dichloropropyl phosphate, polyphosphate, magnesium hydroxide, aluminum hydroxide, zinc borate and zinc stannate.
When the content of the oxidizing agent is less than 2 parts by weight, the effect is insignificant. When the content of the oxidizing agent is less than 2 parts by weight, If the content of the oxidizing agent exceeds 3 parts by weight, the mechanical properties of the buffer board deteriorate.
At this time, it is preferable to use zinc oxide as the oxidizing agent.
When the content of the blowing agent is less than 4 parts by weight, bubbles are less likely to be generated and the amount of the buffering agent is reduced. The amount of the foaming agent is preferably 4 to 6 parts by weight, When the content of the blowing agent exceeds 6 U, bubbles are generated to a large extent and the impact absorbing power is improved but the mechanical strength is lowered.
At this time, since the foaming agent has many advantages in foaming such as non-toxic, high-temperature foaming property and high expansion ratio, it is preferable to use CELLCOM-AC series which is the most commonly used foaming agent for manufacturing plastics and rubber stones.
The crosslinking agent is contained in an amount of 0.4 to 0.6 parts by weight. The low-density polyethylene contained in the low-density polyethylene mixture as a main component of the flame-retardant packaging buffering composition is crosslinked to provide a buffer board having excellent mechanical properties.
When the content of the crosslinking agent is less than 0.4 parts by weight, the crosslinking degree of the low-density polyethylene is lowered and the effect of improving mechanical properties is insignificant. When the content of the crosslinking agent exceeds 0.6 parts by weight, the crosslinking effect is not greatly improved, .
At this time, it is preferable that the cross-linking agent is composed of an inorganic peroxide which does not release irritating odor or harmful component, and it is preferable to use a cross-linking agent exhibiting odorless property, and it is more preferable that the cross-linking agent is a cross-linking agent.
When the content of the accelerator is less than 3 parts by weight, the effect is insignificant. When the amount of the promoter is less than 3 parts by weight, Is more than 5 parts by weight, the dispersibility and workability of the flame retardant packaging buffering composition for packaging are improved but the mechanical strength is lowered.
At this time, the accelerator is preferably composed of stearic acid.
A method for manufacturing a flame retardant packaging buffer board according to the present invention includes a raw material dough step (S101) for kneading a low density polyethylene mixture, a filler, a flame retardant, an oxidizing agent and an accelerator, a kneading step (S101) (S103) mixing the mixture prepared through the additive mixing step (S103) (S105), and mixing the kneaded mixture through the kneading step (S105) to form a sheet A plurality of the aged molded products are laminated through the extrusion molding step (S107), an aging step (step S109) in which the molded product manufactured through the extrusion molding step (S107) is aged and a step (S109) And a compression foaming step (S111) of foaming.
The kneading step S101 is a step of kneading a low density polyethylene mixture, a filler, a flame retardant, an oxidizing agent and an accelerator, which comprises 100 parts by weight of low density polyethylene, 13 to 15 parts by weight of a filler, 30 to 40 parts by weight of a flame retardant, And 3 to 5 parts by weight of an accelerator are mixed in a kneader and kneaded at a temperature of 110 to 120 DEG C for 7 to 9 minutes.
At this time, the components, content and role of the low-density polyethylene mixture, the filler, the flame retardant, the oxidizing agent and the promoter are the same as those described in the flame retardant packaging buffer board composition, and a description thereof will be omitted.
The additive mixing step (S103) is a step of mixing the foaming agent and the crosslinking agent into the kneaded material through the raw material kneading step (S101). The low density polyethylene (100) contained in the kneaded material through the raw material kneading step (S101) 4 to 6 parts by weight of a blowing agent and 0.4 to 0.6 parts by weight of a crosslinking agent are mixed at a temperature of 110 to 120 DEG C for 1 to 3 minutes.
If the foaming agent is further added through the additive mixing step (S103), it is possible to prevent premature foaming of the flame retardant packing buffering board composition in the raw material doughing step (S101).
At this time, the description of the ingredients, the content and the role of the foaming agent and the crosslinking agent are the same as those described in the flame retardant packing buffering board composition, and a description thereof will be omitted.
The kneading step (S105) is a step of kneading the mixture prepared through the additive mixing step (S103), mixing the mixture prepared through the additive mixing step (S103) into a pre-heated mixing roll at a temperature of 110 to 120 ° C By kneading at a speed of 15 to 25 rpm for 10 to 20 minutes.
After the kneading step (S105), the foaming agent and the cross-linking agent, which are additionally mixed through the additive mixing step (S103), are evenly mixed into the kneaded material through the raw material kneading step (S101).
The extrusion molding step (S107) is a step of extruding the kneaded mixture through the kneading step (S105) and shaping the kneaded mixture into a sheet shape, and the kneaded mixture is preheated to a temperature of 110 to 130 캜 through the kneading step Extruder to a thickness of 1 to 2 millimeters.
If the thickness of the extrudate extruded through the extrusion molding step (S107) is less than 1 millimeter, the shape stability is excessively low. If the thickness of the extrudate exceeds 2 millimeters, the extrudate can be foamed early.
The aging step (S109) is a step of aging the molded product manufactured through the extrusion molding step (S107). The molded product manufactured through the extrusion molding step (S107) is put into a blowing type drying device and heated at a temperature of 40 to 50 ° C Lt; / RTI >
After the aging step (S109), the internal structure of the molded product produced through the extrusion molding step (S107) is stabilized.
The compression foaming step S111 is a step of laminating a plurality of the aged molded products through the aging step S109 and compressing them with a heated press machine and foaming the aged molded products through the aging step S109, Cm < 2 > for 30 to 40 minutes using a press machine heated to a temperature of 165 to 175 [deg.] C.
At this time, it is preferable to use a press machine in which the press machine is pressed from the lower part to the upper part, rather than from the upper part to the lower part, because the plasticizer pressed during the foaming of the molded product through the extrusion foaming step (S111) If the press machine is pushed from the upper part to the lower part, the weight of the press machine is excessively high as compared with the foaming force, which may be an obstacle to the foaming process.
When the foamed foamed product is cooled through the compression foaming step (S111) at room temperature for 20 to 24 hours, the flame retardant packing buffering board composition according to the present invention is provided. The flame retardant packing buffering board composition has a thickness of 30 to 60 mm .
Accordingly, the flame retardant packing buffering board composition and the method for producing the same according to the present invention are excellent in mechanical properties, safely protect the package, exhibit excellent flame retardancy, exhibit a sterilization and deodorizing effect by using a filler containing zeolite, Is used as a crosslinking agent for a flame retardant packaging.
S101; Raw dough step
S103; Additive mixing step
S105; Kneading step
S107; Extrusion step
S109; Aging stage
S111; Compression foaming step
Claims (14)
The flame retardant packaging buffer composition comprises 100 parts by weight of a low density polyethylene mixture, 13 to 15 parts by weight of a filler, 30 to 40 parts by weight of a flame retardant, 2 to 3 parts by weight of an oxidizing agent, 4 to 6 parts by weight of a blowing agent, 0.4 to 0.6 part by weight of a cross- 3 to 5 parts by weight.
Wherein the filler is a mixture of zeolite and calcium carbonate in a weight ratio of 1: 1.
Wherein the crosslinking agent is an inorganic peroxide crosslinking agent.
Wherein the accelerator is composed of stearic acid.
An additive mixing step of mixing the kneaded material kneaded through the raw material kneading step with a foaming agent and a cross-linking agent;
A kneading step of kneading the mixture prepared through the additive mixing step;
An extrusion molding step of extruding the kneaded mixture through the kneading step and shaping the kneaded mixture into a sheet shape;
An aging step of aging the molded product produced through the extrusion molding step; And
And a compression foaming step of laminating a plurality of the aged molded products through the aging step and compressing the compressed products by a heated press machine and foaming the foamed product.
Wherein the raw material doughing step is performed by mixing 100 parts by weight of low density polyethylene, 13 to 15 parts by weight of a filler, 30 to 40 parts by weight of a flame retardant, 2 to 3 parts by weight of an oxidizing agent and 3 to 5 parts by weight of an accelerator Gt;
Wherein the raw material kneading step is performed at a temperature of 110 to 120 DEG C for 7 to 9 minutes.
Wherein the additive mixing step comprises mixing 4 to 6 parts by weight of a blowing agent and 0.4 to 0.6 parts by weight of a cross-linking agent with respect to 100 parts by weight of low density polyethylene contained in the kneaded material through the raw material kneading step Way.
Wherein the additive mixing step is performed at a temperature of 110 to 120 DEG C for 1 to 3 minutes.
Wherein the kneading step is performed at a speed of 15 to 25 rpm for 10 to 20 minutes using a pre-heated mixing roll at a temperature of 110 to 120 ° C.
Wherein the extrusion molding step comprises extruding the kneaded mixture through the kneading step to a thickness of 1 to 2 mm using an extruder preheated at a temperature of 110 to 130 캜.
Wherein the aging step is carried out by introducing the molded product manufactured through the extrusion molding step into a blowing type drying apparatus and cooling the molded article at a temperature of 40 to 50 ° C.
Wherein the compression foaming step comprises laminating a plurality of the aged molded products through the aging step and compressing the mixture at a pressure of 150 kg / cm 2 for 30 to 40 minutes using a press machine heated to a temperature of 165 to 175 ° C A method for manufacturing a buffer board for flame retardant packaging.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150049584A KR20160120487A (en) | 2015-04-08 | 2015-04-08 | Fireproof damping board and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150049584A KR20160120487A (en) | 2015-04-08 | 2015-04-08 | Fireproof damping board and manufacturing method thereof |
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| KR20160120487A true KR20160120487A (en) | 2016-10-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233047A (en) * | 2018-08-09 | 2019-01-18 | 张剑 | A kind of ethylene closed cell cystosepiment |
| KR102149815B1 (en) * | 2019-11-21 | 2020-08-31 | (주)보현 | A manufacturing method of non-toxic foaming sheet and non-toxic foaming sheet manufacturing thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140116124A (en) | 2012-03-28 | 2014-10-01 | 니뽄 다바코 산교 가부시키가이샤 | Packaging sheet, cigarette package using said packaging sheet, and outer blank for said cigarette package |
| KR101471174B1 (en) | 2014-03-06 | 2014-12-11 | (주)페이퍼월드 | Packing sheet |
-
2015
- 2015-04-08 KR KR1020150049584A patent/KR20160120487A/en not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140116124A (en) | 2012-03-28 | 2014-10-01 | 니뽄 다바코 산교 가부시키가이샤 | Packaging sheet, cigarette package using said packaging sheet, and outer blank for said cigarette package |
| KR101471174B1 (en) | 2014-03-06 | 2014-12-11 | (주)페이퍼월드 | Packing sheet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233047A (en) * | 2018-08-09 | 2019-01-18 | 张剑 | A kind of ethylene closed cell cystosepiment |
| KR102149815B1 (en) * | 2019-11-21 | 2020-08-31 | (주)보현 | A manufacturing method of non-toxic foaming sheet and non-toxic foaming sheet manufacturing thereof |
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