KR101808600B1 - Plastic sheet - Google Patents

Plastic sheet Download PDF

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Publication number
KR101808600B1
KR101808600B1 KR1020160023470A KR20160023470A KR101808600B1 KR 101808600 B1 KR101808600 B1 KR 101808600B1 KR 1020160023470 A KR1020160023470 A KR 1020160023470A KR 20160023470 A KR20160023470 A KR 20160023470A KR 101808600 B1 KR101808600 B1 KR 101808600B1
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KR
South Korea
Prior art keywords
sheet
disposed
thickness
plastic
polypropylene
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Application number
KR1020160023470A
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Korean (ko)
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KR20170100945A (en
Inventor
박종엽
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주식회사 케이.피
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Priority to KR1020160023470A priority Critical patent/KR101808600B1/en
Publication of KR20170100945A publication Critical patent/KR20170100945A/en
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    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/08—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 synthetic resin
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene

Abstract

A plastic sheet according to an embodiment includes: a first sheet; And a second sheet disposed on at least one of the one surface and the other surface of the first sheet; And a third sheet disposed between the first sheet and the second sheet, wherein the first sheet comprises a polypropylene, a polyethylene or a polypropylene-polyethylene polymer, (PETG), and the third sheet comprises polypropylene, polyethylene terephthalate glycol (PETG), or styrene butadiene copolymer.

Description

Plastic sheet {PLASTIC SHEET}

An embodiment relates to a plastic sheet.

In general, plastic sheets are widely used not only for food containers widely used in everyday life but also for construction materials, mechanical parts, electronic parts, lighting covers, sign boards, trays, pallets, automobile parts, .

On the other hand, the conventional plastic sheet is composed of a single layer or a laminate structure of two or more layers. In the case of a single-layer plastic sheet, the properties of the raw material are reflected as it is, There is a problem that can not be done.

Further, although the plastic sheet produced by the laminated structure of two or more layers can solve the disadvantages of the raw materials to some extent by complementary relationship between the layers, the flatness of the sheet is deteriorated due to the difference in physical properties between the layers, , There is a problem that a bank phenomenon occurs on the layer surface.

Particularly, when a receiving portion is formed on a plastic sheet and an electronic component such as a touch panel is received and moved in the receiving portion, an impact is applied to the plastic sheet, Or damage may occur.

Accordingly, a plastic sheet having a new structure capable of solving the above problems is required.

The embodiment attempts to provide a plastic sheet with improved reliability.

A plastic sheet according to an embodiment includes: a first sheet; And a second sheet disposed on at least one of the one surface and the other surface of the first sheet; And a third sheet disposed between the first sheet and the second sheet, wherein the first sheet comprises a polypropylene, a polyethylene or a polypropylene-polyethylene polymer, (PETG), and the third sheet comprises polypropylene, polyethylene terephthalate glycol (PETG), or styrene butadiene copolymer.

The plastic sheet according to an embodiment may include a first sheet, a second sheet and a third sheet.

Further, the third sheet is disposed between the first sheet and the second sheet, and is disposed in contact with the first sheet and the second sheet, thereby indirectly bonding the first sheet and the second sheet .

In detail, the first sheet including polypropylene, polyethylene or polypropylene-polyethylene polymer and the second sheet including polyethylene terephthalate glycol (PETG) are peeled off at the time of adhesion, . Thus, by disposing the third sheet including the polypropylene, the glycol-modified PET resin or the styrene butadiene polymer (Styrene Butadiene Copolymer) which is adhered to the first sheet and the second sheet, And the second sheet can be easily adhered to each other.

Therefore, the plastic sheet according to the embodiment can easily adhere the first sheet having improved impact resistance and the second sheet having improved wear resistance, so that the plastic sheet can have improved durability and wear resistance at the same time.

Therefore, the plastic sheet according to the embodiment can protect an object such as an electronic part that can be accommodated in the plastic sheet due to the durability of the first sheet. In addition, since the second sheet disposed on the first sheet has improved wear resistance, it is possible to prevent damage to the object accommodated in the plastic sheet due to dust in the first sheet.

Thus, when the plastic sheet is processed to accommodate various objects, it is possible to prevent breakage or damage of the object to be accommodated.

1 is a perspective view of a plastic sheet according to a first embodiment.
2 is a cross-sectional view taken along the line A-A 'in Fig.
3 is a perspective view of the plastic sheet according to the second embodiment.
4 is a cross-sectional view taken along the line B-B 'in Fig. 2; Fig.

In the description of the embodiments, each substrate, frame, sheet, layer or pattern, etc. is formed "on" or "under" or on both sides of each substrate, frame, sheet, The terms " on "and " under " all include being formed either" directly "or" indirectly " In addition, the upper or lower reference of each component is described with reference to the drawings. The size of each component in the drawings may be exaggerated for the sake of explanation and does not mean the size actually applied.

1 to 4, a plastic sheet 1000 according to an embodiment may include a first sheet 110, a second sheet 120, and a third sheet 130.

For example, the plastic sheet 1000 may include a plurality of sheets stacked and disposed in the order of a first sheet 110, a third sheet 130, and a second sheet 120.

In detail, the third sheet 130 may be disposed on the first sheet 110, and the second sheet 120 may be disposed on the third sheet 130.

Although the first sheet 110, the second sheet 120 and the third sheet 130 are shown separately for convenience of explanation in FIGS. 1 to 4, the first sheet 110, The two sheets 120 and the third sheet 130 may be integrally formed without being separated from each other.

That is, the first sheet 110, the second sheet 120, and the third sheet 130 may be integrally formed with an interface.

The first sheet 110 may include a first surface and a second surface opposite to the first surface. The second sheet 120 may be disposed on at least one of the one surface and the other surface of the first sheet 110.

For example, as shown in FIGS. 1 and 2, the second sheet 120 may be disposed on only one side of the first sheet 110 or only on the other side of the first sheet 110, As shown in FIGS. 3 and 4, may be disposed on one surface and the other surface of the first sheet 110, respectively.

The first sheet 110 may include a first surface and a second surface opposite to the first surface. In detail, the first sheet 110 may include one surface that is disposed in contact with the third sheet 130, and a surface opposite to the one surface.

The third sheet 130 may be disposed on at least one of the one surface and the other surface of the first sheet 110.

The third sheet 130 may be disposed on only one side of the first sheet 130 or only on the other side of the first sheet 110 or may be disposed on only one side of the first sheet 110, Lt; / RTI >

The second sheet 120 may be disposed only on the third sheet 130 disposed on one side of the first sheet 130 or on the third sheet 130 disposed on one side of the first sheet 130, (130) and a third sheet (130) disposed on the other side of the first sheet (130).

1 to 4 are views showing one embodiment of a plastic sheet according to an embodiment.

1 and 2 illustrate the first sheet 110, the third sheet 130 disposed on one side of the first sheet 110, and the third sheet 130 disposed on one side of the third sheet 130, And a second sheet (120).

3 and 4 illustrate the first sheet 110, the third sheet 130 disposed on one side and the other side of the first sheet 110, and the third sheet 130 disposed on one side of the first sheet 130 And a second sheet 120 disposed on a third sheet 130 disposed on the first sheet 130 and on a third sheet 130 disposed on the other side of the first sheet 130 .

The description of the first sheet 110, the second sheet 120 and the third sheet 130 described in the following description is made on the first sheet 110, the second sheet 120, And the positional relationship of the third sheet 130 without limitation.

The first sheet 110 may be a base sheet. In detail, at least one or more sheets may be laminated on the first sheet 110. The first sheet 110 may include a resin.

For example, the first sheet 110 may include polypropylene, polyethylene, or a polymer thereof, that is, a polypropylene-polyethylene polymer. For example, the first sheet 110 may include at least one of polypropylene, polyethylene, and polypropylene-polyethylene polymer.

The first sheet 110 may further include at least one material selected from the group consisting of styrene butadiene polymer and polyethylene terephthalate glycol.

That is, the first sheet 110 may include at least one material selected from the group consisting of polypropylene, polyethylene and polypropylene-polyethylene polymer, or may include at least one of polypropylene, polyethylene, and polypropylene-polyethylene At least one material of the polymer and at least one of styrene butadiene polymer or polyethylene terephthalate glycol.

Wherein the styrene butadiene polymer is a material in which styrene and butadiene are molecularly bonded, wherein the styrene is contained in an amount of about 70% by weight to 75% by weight based on the entire copolymer, the butadiene is present in an amount of about 25% To about 30% by weight.

The polyethylene terephthalate glycol may be included in the first sheet 110 to improve the strength of the plastic sheet.

Accordingly, the plastic sheet according to the embodiment including the first sheet 110 is excellent in impact resistance and mechanical properties, and can be processed easily.

The second sheet 120 may be disposed on the first sheet 110. In detail, the second sheet 120 may be disposed on one side and / or the other side of the first sheet 110.

The second sheet 120 may include a resin. For example, the second sheet 120 may include Polyethylene Terephthalate Glycol (PETG).

The polyethylene terephthalate glycol (PETG) may be a glycol-modified polyethylene terephthalate resin

The polyethylene terephthalate glycol (PETG) may have the following chemical formula.

[Chemical Formula]

Figure 112016019241446-pat00001

The polyethylene terephthalate glycol (PETG) is excellent in abrasion resistance and can be used as a protective layer of packaging containers for electronic parts such as mobile phones and tablet PCs.

The second sheet 120 may be disposed on the first sheet 110 to protect the first sheet 110 from an external impact or the like.

The third sheet 130 may be disposed on the first sheet 110. In detail, the third sheet 130 may be disposed on one surface and / or the other surface of the first sheet 110. For example, the third sheet 130 may be disposed between the first sheet 110 and the second sheet 120.

The third sheet 130 may be disposed in contact with the first sheet 110 and the second sheet 120. For example, the third sheet 130 may be disposed in direct contact with the first sheet 110 and the second sheet 120. That is, the lower surface of the third sheet 130 may be disposed in contact with the first sheet 110, and the upper surface of the third sheet 130 may be disposed in contact with the second sheet 120.

The third sheet 130 may include at least one of polypropylene, polyethylene, and polypropylene-polyethylene polymer.

In addition, the third sheet may further include polyethylene terephthalate glycol. The third sheet 130 may further include calcium carbonate (CaCo3) or a talc material. The calcium carbonate (CaCo3) or the talc may have a strength of the third sheet 130 Can be further added to improve < / RTI >

The third sheet 130 may be adhered to the first sheet 110 and the second sheet 120. For example, the third sheet 130 may be thermally fused with the first sheet 110 and the second sheet 120.

At this time, the third sheet 130 may serve as a crosslinking agent for bonding the first sheet 110 and the second sheet 120 together.

In detail, the first sheet 110 comprising polypropylene, polyethylene or a polypropylene-polyethylene polymer and the second sheet 120 comprising polyethylene terephthalate glycol (PETG) The difference may cause peeling at the bonding surface in the case of thermal fusion bonding, so that fusion bonding may not occur.

The third sheet 130 is fused to the first sheet 110 and the second sheet 120 and between the first sheet 110 and the second sheet 120, One surface of the third sheet 130 is bonded to the first sheet 110 and the other surface of the third sheet 130 is bonded to the second sheet 120, 110 and the second sheet 120 can be indirectly bonded to each other.

The first sheet 110, the second sheet 120, and the third sheet 130 may have different thicknesses.

For example, the third sheet 130 may have a thickness smaller than that of at least one of the first sheet 110 and the second sheet 120. In detail, the third sheet 130 may have a smaller thickness than the first sheet 110 and the second sheet 120.

In addition, the first sheet 110 and the second sheet 120 may have the same or different thicknesses.

The thickness T1 of the first sheet 110 may have a thickness of about 1% to about 95% of the total thickness of the plastic sheet. In detail, the thickness T1 of the first sheet 110 may have a thickness of about 1% to about 50% of the total thickness of the plastic sheet. In detail, the thickness T1 of the first sheet 110 may have a thickness of about 1% to about 40% of the thickness of the entire plastic sheet. More specifically, the thickness T1 of the first sheet 110, May have a thickness of about 10% to about 40% of the total thickness of the plastic sheet

In addition, the thickness T2 of the second sheet 120 may have a thickness of about 1% to about 90% of the entire thickness of the plastic sheet. In detail, the thickness T2 of the second sheet 120 may have a thickness of about 1% to about 50% of the thickness of the entire plastic sheet. More specifically, the thickness T2 of the second sheet 120, May have a thickness of about 10% to about 40% of the total thickness of the plastic sheet

In addition, the thickness T3 of the third sheet 130 may have a thickness of about 1% to about 90% of the entire thickness of the plastic sheet. In detail, the thickness T3 of the third sheet 130 may have a thickness of about 1% to about 50% of the total thickness of the plastic sheet. More specifically, the thickness T2 of the third sheet 130 may have a thickness of about 5% to about 15% of the total thickness of the plastic sheet.

The thickness range is a thickness range in which the first sheet 110, the second sheet 120, and the third sheet 130 exhibit all the characteristics thereof.

For example, when the thickness of the first sheet 110, the second sheet 120, and the third sheet 130 is out of the range, the characteristics of the first sheet 110, that is, The first sheet 120 and the second sheet 120 are not simultaneously exhibited in wear resistance but are exerted mainly on any one of them and can not have improved durability and abrasion resistance to effectively protect an object that can be accommodated in the plastic sheet I can not.

In addition, when the third sheet 130 is out of the thickness range, the first sheet 110 and the second sheet 120 may not be fused to each other and peeling may occur. The first sheet 110 or the second sheet 120 may be desorbed and reliability may be degraded.

Accordingly, in the plastic sheet according to the embodiment, the second sheet 120 is disposed on one surface and / or the other surface of the first sheet 110 to have both impact resistance and elastic force. That is, due to the durability of the first sheet 110, objects such as electronic parts that can be accommodated in the plastic sheet can be protected. Further, since the second sheet 120 disposed on one surface of the first sheet 110 has improved elasticity, it absorbs the shock that can be applied to the plastic sheet, It is possible to alleviate the external impact that may be applied to the object such as the object.

In detail, the first sheet including polypropylene, polyethylene or polypropylene-polyethylene polymer and the second sheet including polyethylene terephthalate glycol (PETG) are peeled off at the time of adhesion, . Accordingly, the first sheet and the second sheet can be easily adhered to each other by disposing the third sheet, which is adhered to the first sheet and the second sheet, between the first sheet and the second sheet.

Therefore, the plastic sheet according to the embodiment can easily adhere the first sheet having improved impact resistance and the second sheet having improved wear resistance, so that the plastic sheet can have improved durability and wear resistance at the same time.

Therefore, the plastic sheet according to the embodiment can protect an object such as an electronic part that can be accommodated in the plastic sheet due to the durability of the first sheet. In addition, since the second sheet disposed on the first sheet has improved wear resistance, it is possible to prevent damage to the object accommodated in the plastic sheet due to dust in the first sheet.

Thus, when the plastic sheet is processed to accommodate various objects, it is possible to prevent breakage or damage of the object to be accommodated.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (6)

A first sheet;
A second sheet disposed on at least one of the one surface and the other surface of the first sheet; And
And a third sheet disposed between the first sheet and the second sheet,
Wherein the first sheet comprises at least one material selected from the group consisting of polypropylene, polyethylene and polypropylene-polyethylene polymer; And at least one material selected from styrene butadiene polymer or polyethylene terephthalate glycol,
Wherein the second sheet comprises polyethylene terephthalate glycol (PETG)
Wherein the third sheet comprises at least one material selected from the group consisting of polypropylene, polyethylene and polypropylene-polyethylene polymers,
Wherein the styrene butadiene polymer comprises a styrene-butadiene copolymer in which styrene and butadiene are molecularly bonded, wherein the styrene is contained in an amount of 70% by weight to 75% by weight with respect to the entire copolymer, Is contained in an amount of 25% by weight to 30% by weight based on the entire copolymer,
Wherein the third sheet further comprises calcium carbonate (CaCO3) or talc,
The first sheet is disposed in direct contact with the lower surface of the third sheet,
The second sheet is disposed in direct contact with the upper surface of the third sheet,
The first sheet and the second sheet are thermally fused with the third sheet,
The first sheet has a thickness of 10% to 40% of the entire thickness of the plastic sheet,
The second sheet has a thickness of 10% to 40% of the total thickness of the plastic sheet,
Wherein the third sheet has a thickness of 5% to 15% of the total thickness of the plastic sheet. delete delete delete delete delete
KR1020160023470A 2016-02-26 2016-02-26 Plastic sheet KR101808600B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160023470A KR101808600B1 (en) 2016-02-26 2016-02-26 Plastic sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160023470A KR101808600B1 (en) 2016-02-26 2016-02-26 Plastic sheet

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KR20170100945A KR20170100945A (en) 2017-09-05
KR101808600B1 true KR101808600B1 (en) 2018-01-18

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102159185B1 (en) 2018-03-21 2020-09-23 김진규 Compositions including more than two kinds of PCTGs and PC
KR102077993B1 (en) 2018-07-11 2020-02-17 주식회사 케이.피 Light-weight sandwich structure comprising double foam sheet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009249006A (en) 2008-04-08 2009-10-29 Daiwa Can Co Ltd Multi-layer polyester resin container
KR101156607B1 (en) * 2009-07-01 2012-06-18 동일화학공업 주식회사 Heat Shrinkable Film and Process of Preparing Same
JP2014507315A (en) 2011-04-27 2014-03-27 エルジー・ハウシス・リミテッド Environmentally friendly deco sheet with excellent moldability and gloss
KR101590599B1 (en) 2014-11-11 2016-02-01 주식회사 성곡 Plastic sheet for tray

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009249006A (en) 2008-04-08 2009-10-29 Daiwa Can Co Ltd Multi-layer polyester resin container
KR101156607B1 (en) * 2009-07-01 2012-06-18 동일화학공업 주식회사 Heat Shrinkable Film and Process of Preparing Same
JP2014507315A (en) 2011-04-27 2014-03-27 エルジー・ハウシス・リミテッド Environmentally friendly deco sheet with excellent moldability and gloss
KR101590599B1 (en) 2014-11-11 2016-02-01 주식회사 성곡 Plastic sheet for tray

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